CN203245393U - Hydraulic chuck overturning device - Google Patents

Abstract

The utility model discloses a hydraulic chunk overturning device. The hydraulic chunk overturning device is characterized in that a supporting connecting piece, a hydraulic chunk, a chunk overturning device body and a chunk locking device are included, the hydraulic chunk is arranged in the supporting connecting piece through the chunk overturning device body, and the chunk locking device is arranged in the position of a rotating shaft of the overturning device body. Through the special arrangement of an inside oil way, compared with an existing chunk, the two clamped ends of a workpiece can be machined, through overturning the chunk, as long as one-time assembly is realized, and the whole overturning and clamping process is completely controlled by hydraulic pressure, so that the centering clamping motion precision of the workpiece and chunk overturning precision can be ensured.

Description

A hydraulic flip chuck device

technical field

The utility model relates to a chuck device, in particular to a hydraulic flip chuck device.

Background technique

The CNC lathes produced in my country are all general-purpose processing equipment. Since the design of the machine tool does not professionally consider the characteristics of the pipe coupling thread processing, it is mainly reflected in the need for two clamping during the thread processing at both ends of the coupling, resulting in general-purpose equipment. Low efficiency and unstable product quality occur during the processing of pipe coupling threads, resulting in waste of energy and processing costs; and the improvement of comprehensive reliability depends on the functional characteristics of machine tool components and the operation of high-precision, high-rigidity components The close combination of medium and high control precision software to achieve long-term stability of product quality during processing.

With the gradual development of hydraulic technology, the movement accuracy and controllability of hydraulic control components relative to the original mechanical structural components have been significantly improved. Through the combination of hydraulic principles and mechanical structures, and the design of reasonable hydraulic oil circuits, The hydraulic control drive of the whole device is realized, and the movement accuracy and bearing capacity of the chuck device are greatly improved.

Contents of the invention

The technical problem to be solved by the utility model is to provide a hydraulic flip chuck device that is fully controlled by hydraulic pressure and can complete high-precision flip and precise centering clamping.

In order to achieve the above purpose, it is realized through the following technical solutions:

A hydraulic flipping chuck device, comprising: a support connector, a hydraulic chuck, a chuck flipping device and a chuck locking device;

The supporting connector includes: the supporting body and the connecting flange, which are positioned and assembled through the short cylindrical positioning holes processed on the bottom of the supporting body and the upper end surface of the connecting flange respectively, and are fastened around the bolts;

The support body connection consists of a support body and a connecting flange. The two parts are positioned and assembled through the short cylindrical positioning holes, and are fastened with 12 M12 bolts to form an assembly, and are assembled with the main shaft to realize the rotation and torque transmission of the main shaft;

The connecting flange is processed with multiple independent oil hole channels, and these oil hole channels are connected with each oil pipeline of the support body one by one, forming the hydraulic circuit of the flip chuck, the locking device, and the actuators in the flip device; The formation of these hydraulic circuits mainly depends on the power control formed by the oil circuit connection between the oil circuit block and the oil circuit distributor through the oil pipe. A position signal sensing component and a position transmission component are also installed in the accessory.

An oil circuit block is fixed at the lower end of the support connector, and the oil circuit block is connected to the oil circuit of the oil circuit distributor on the machine tool through the oil pipe;

The support body is a high-precision casting, which is finished after forming. There are four chip removal cavities symmetrically distributed in the center of the support body; The lower end of the gland is fixed with the annular oil passage gland Ⅰ, that is, the annular gland, the annular oil passage gland Ⅰ and the outer wall of the support form a sealed cavity; the closed space of the support body is composed of the support body itself and the four arcs of the annular gland. Formed cover plate protects electrical and hydraulic components. The front end of the support body is finished with 4 positioning holes for assembling the chuck, and its position requirements are very high. They are the installation holes for the turning device in the direction of 180°; the installation holes for the locking device in the direction of ±90°;

There are 4 positioning holes on the axial upper end of the support body for installing the hydraulic chuck, and the positions of the 4 positioning holes are distributed in 4 equal parts of the support body; the chuck turning device is fixed in a pair of symmetrically distributed positioning holes; the chuck The locking device is fixed in another pair of symmetrically distributed positioning holes;

The hydraulic chuck is a circular, middle-hole columnar structure, and the mechanical structure includes: flip chuck, annular oil gland II fixed on the flip chuck, annular oil gland III, mechanical synchronization mechanism, and 6 circumferentially distributed A plunger hydraulic cylinder, hydraulic oil circuit and valve group assembly and a chuck lubrication assembly matched with 6 plunger hydraulic cylinders; there are grooves for placing 6 plunger hydraulic cylinders in the flip chuck; mechanical The synchronous mechanism is set inside the plunger hydraulic cylinder; the annular oil passage gland II and the annular oil passage gland III are respectively fixed on the two ends of the turning chuck; the turning chuck is processed with a transverse shaft hole; Installed in the shaft hole of the flip chuck, and the chuck flip device is linked with the flip chuck; the chuck locking mechanism is set at the lower end of the shaft hole of the flip chuck;

The hydraulic chuck is a circular ring and a middle-hole columnar structure, and its mechanical structure includes: flip chuck, annular oil circuit gland, annular oil circuit gland, mechanical synchronization mechanism, 6 plunger hydraulic cylinders, hydraulic oil circuit Channel design and valve group assembly, chuck lubrication.

Structural features: As the main component of the hydraulic chuck, the flip chuck plays the role of precision transmission in assembly positioning. In terms of processing design, it satisfies the assembly and cooperation of all other structures of the hydraulic chuck. The annular oil gland is fixed on one side of the flip chuck with bolts in the form of an end cover; two annular grooves are designed in the annular oil gland, and under the oil sealing effect of the sealing component, two oil grooves are formed with the flip chuck. The channel supports the hydraulic reversing circuit of 6 plunger hydraulic cylinders. Similarly, the annular oil gland is fixed in the annular groove on the other side of the flip chuck with bolts in the form of an end cover; there are two annular grooves designed in the annular oil gland, and under the oil sealing effect of the sealing component, it is connected with the flip chuck. The disc forms an oil channel and an air channel. 6 plunger hydraulic cylinders are evenly distributed on the 360° of the chuck to form a symmetrical clamping on the coupling. For the formation of the oil passages of the rodless cavity and the rod cavity of each hydraulic cylinder, an oil hole channel is designed on the flip chuck. Three of the plunger hydraulic cylinders are linked with the mechanical synchronization mechanism at an angle of 120°, which has the function of synchronous centering clamping under low pressure conditions; the other three plunger hydraulic cylinders are in the floating clamping state, Its clamping center is not restricted, and it starts to move when the hydraulic pressure is greater than 8 kg;

The mechanical synchronization mechanism is designed according to the mechanics of the liquid pressure below 8 kg, which ensures that the three plunger hydraulic cylinders are driven by low pressure, and the synchronization ring is connected with the three plungers through the synchronization pin to control the movement speed of the three plungers. Consistency, and then realize the function of 3-jaw centering clamping.

Chuck overturning device includes: hydraulic rotating shaft mechanism, hydraulic control circuit of chuck action element, air circuit and overturning mechanism;

The hydraulic rotary shaft mechanism includes: hydraulic rotary shaft and rotary shaft support body; the hydraulic rotary shaft is positioned on the support body through the positioning hole at the front end of the rotary shaft support body through bolt fastening; the flip chuck sleeve is placed on the hydraulic rotary shaft, and the chuck is turned over There is an oil circuit positioning sleeve for fixing the hydraulic rotating shaft; the other end of the hydraulic rotating shaft is assembled into the oil circuit positioning sleeve of the flip chuck, and the axial and radial positioning with the flip chuck is completed through the thrust bearing; the flip chuck The disc is machined with an axial positioning hole; the hydraulic control circuit and the air circuit form the chuck pressure circuit and the air circuit with the oil distributor at the end of the headstock and the oil pipe in the inner hole of the spindle;

The hydraulic control circuit and the air circuit form the flip chuck pressure circuit and the air circuit with the oil circuit distributor at the end of the headstock and the oil pipe in the inner hole of the main shaft.

The overturn mechanism includes: overturn gear shaft, cylindrical thrust bearing and bearing gland; overturn gear shaft and overturn chuck axis positioning hole are in transition fit, and are positioned in the direction of chuck axis by pressure block and fastening bolt to realize rigid connection; overturn The upper part of the gear end of the gear shaft is equipped with the inner ring of the cylindrical thrust bearing, and the outer ring of the cylindrical thrust bearing is embedded in the positioning hole of the bearing gland. The bearing gland and the outer ring of the bearing are assembled into the positioning hole I of the support body. The bearing The outer circle of the gland is fixed with bolts in the axial direction;

The chuck locking device includes: a locking positioning hydraulic cylinder, a chuck locking seat, a hydraulic circuit and a position feedback mechanism.

The locking and positioning hydraulic cylinder is a double-piston rod hydraulic cylinder, and the hydraulic cylinder is composed of a cylinder body, a two-way piston, a cylinder cover and a sealing assembly. The cylinder body is positioned in the axis positioning hole of the support body through the positioning pins, and fixed with bolts to become a fixed body for the relative displacement of the two-way piston. The cylinder head of the hydraulic cylinder is fixed on the end face of the cylinder body with bolts through the positioning of the positioning pins. The precise positioning of the positioning pins in the cylinder body and the cylinder head is to meet the installation of the hydraulic pipeline and the position feedback mechanism. The dust cover is fastened on the outermost end of the cylinder body with bolts, which plays a role in protecting the hydraulic components. The locking and positioning hydraulic cylinder is symmetrically designed and located on the 180° plane of the support body;

The chuck locking seat is composed of a positioning cylinder head and a locking seat. The outer circle of the locking seat and the inner circle of the positioning cylinder head are assembled in one piece through a strong interference fit. The components are positioned through the cylindrical hole to realize The central positioning of the locking hole on the thickness of the chuck and the 180° axis positioning on the outer circle of the chuck are ensured.

The support body is a casting with high processing precision, and there are 4 support parts for oil circuit assembly and flip assembly processed between the front and rear end faces, and 4 casting open spaces for chip removal;

The utility model adopts the above-mentioned technical scheme to realize the clamping of the chuck, the flipping of the chuck and the positioning of the chuck, and the complete hydraulic control of the above-mentioned actions is realized by being equipped with a reasonable mechanism and an oil circuit, which not only improves the positioning accuracy of the chuck, And the carrying capacity of the overall mechanism of the chuck is improved; since the chuck realizes the flipping action through hydraulic control, in the process of workpiece processing, only one-time assembly is required, and the two ends of the workpiece clamping can be processed through the flipping action. Moreover, the hydraulically controlled turning has a very good turning precision control, which ensures the machining accuracy of the workpiece after turning over; this has good applicability for machining workpieces that require high precision and high strength.

The above description is only an overview of the technical solutions of the present utility model. In order to better understand the technical means of the present utility model, it can be implemented according to the contents of the description, and in order to make the above-mentioned and other purposes, features and advantages of the present utility model better It is obvious and easy to understand. The preferred embodiments are specifically cited below, together with the accompanying drawings, and detailed descriptions are as follows.

Description of drawings

The utility model has 13 drawings in total, in which:

Fig. 1 is a schematic top view structure diagram of the supporting connector of the present invention.

Fig. 2 is a schematic diagram of the cross-sectional structure of the supporting connector A-A of the present invention.

Fig. 3 is a schematic diagram of the cross-sectional structure of the supporting connector B-B of the present invention.

Fig. 4 is an enlarged schematic diagram of a top view section structure of the hydraulic chuck of the present invention.

Fig. 5 is an enlarged schematic diagram of a side view sectional structure of the hydraulic chuck of the present invention.

Fig. 6 is an enlarged schematic diagram of the assembly cross-sectional structure of the hydraulic check valve of the hydraulic chuck of the present invention.

Fig. 7 is an enlarged schematic diagram of the section structure of the hydraulic chuck accumulator of the present invention.

Fig. 8 is an enlarged schematic diagram of the sectional structure of the lubricating oil passage of the hydraulic chuck of the present invention.

Fig. 9 is an enlarged schematic diagram of a side view cross-sectional structure of the chuck turning device of the present invention.

Fig. 10 is an enlarged schematic diagram of the cross-sectional structure of the locking part of the chuck turning device of the present invention.

Fig. 11 is an enlarged schematic diagram of the oil circuit distribution structure of the chuck turning device of the present invention.

Fig. 12 is an enlarged schematic diagram of a side view sectional structure of the chuck locking device of the present invention.

Fig. 13 is an enlarged schematic diagram of the A-A section structure of the chuck locking device of the present invention.

Detailed ways

A hydraulic flipping chuck device as shown in Fig. 1, Fig. 2 and Fig. 3, comprising: a support connector, a hydraulic chuck, a chuck turning device and a chuck locking device;

The supporting connector includes: a supporting body 1.3 and a connecting flange 2.3, which are positioned and assembled through the short cylindrical positioning holes 27.3 processed on the bottom of the supporting body 1.3 and the upper end surface of the connecting flange 2.3 respectively, and tightened by bolts;

The connecting flange 2.3 is not only a connecting piece, but also a plurality of independent oil hole passages are processed on the connecting flange 2.3. These oil hole passages are connected with the oil pipes of the support body 1.3 one by one, forming a turning chuck, locking The hydraulic circuit of each actuator in the device and the turning device;

An oil circuit block 29.3 is fixed at the lower end of the support connector, and the oil circuit block 29.3 is connected to the oil circuit of the oil circuit distributor on the machine tool through the oil pipe;

The support body 1.3 is a high-precision casting, which is finished after forming. There are four chip removal cavities symmetrically distributed in the center of the support body 1.3; The annular gland 12.3; the lower end of the annular gland 12.3 is fixed with the annular oil passage gland I3.3, that is, the annular gland 12.3, the annular oil passage gland I3.3 and the outer wall of the support body 1.3 form a sealed cavity;

The upper axial end of the support body 1.3 is processed with 4 positioning holes for installing hydraulic chucks, and the positions of the 4 positioning holes are distributed in 4 equal parts of the support body 1.3; the chuck turning device is fixed at a pair of symmetrically distributed positioning holes; The chuck locking device is fixed at another pair of symmetrically distributed positioning holes;

The support body connection and accessories are composed of a support body 1.3 and a connecting flange 2.3. The two parts are positioned and assembled through the short cylindrical positioning hole 27.3, and are fastened as an assembly with 12 M12 bolts, and assembled with the main shaft to realize the rotation and torque of the main shaft. transfer.

The connecting flange is not only a connecting piece, but also has multiple independent oil hole passages in the design of the connecting flange, as shown in (28.3, 29.3). , 5.3) and so on one-to-one corresponding connection constitutes the hydraulic circuit of each actuator in the overturning chuck, locking device and overturning device. The formation of these hydraulic circuits mainly depends on the power control formed by the oil circuit connection of the oil circuit block 29.3 through the oil pipe and the oil circuit distributor. Position signal sensing components (21.3, 9.3) and position transmission components (18.3, 6.3) are also installed in the accessories.

The supporting body 1.3 is a casting with high casting precision, and it is finished after molding. (23.3, 24.3, 25.3, 26.3) in the figure are open spaces for casting, which are channels for removing iron filings. The enclosed space of the support body 1.3 is composed of the support body 1.3 itself, the annular gland and four annular glands 12.3, which protect the electrical and hydraulic components. The front end of the support body 1.3 is finished with 4 positioning holes for assembling chucks, which require high positioning accuracy, which are the installation holes for the turning device in the direction of 180° and the installation holes for the locking device in the direction of ±90°.

The hydraulic chuck shown in Fig. 4 to Fig. 8 is a circular ring and a middle-hole columnar structure. The mechanical structure includes: flip chuck 53.1, ring oil gland II3. Road gland III 10.2, mechanical synchronous mechanism, 6 plunger hydraulic cylinders distributed around the circumference, hydraulic oil circuit and valve group 28.2 assembly and chuck lubrication assembly 34.2 matched with 6 plunger hydraulic cylinders; turn over the chuck 53.1 is provided with grooves for placing 6 plunger hydraulic cylinders; the mechanical synchronization mechanism is arranged inside the plunger hydraulic cylinders; the annular oil passage gland II 3.2 and the annular oil passage gland III 10.2 are respectively fixed on the flip The two ends of the chuck 53.1; the turning chuck 53.1 is processed with a transverse shaft hole; the chuck turning device is installed in the shaft hole of the turning chuck 53.1 through the turning shaft 3.1, and the chuck turning device is linked with the turning chuck 53.1; The disk locking mechanism is set at the lower end of the shaft hole of the flip chuck 53.1;

The hydraulic chuck shown in Fig. 4 to Fig. 8 is a circular ring and a middle-hole columnar structure, including: flip chuck 53.1, annular oil passage gland II 3.2, annular oil passage gland III 10.2, and mechanical synchronization mechanism (4.2, 5.2, 8.2) Design of 6 plunger hydraulic cylinders T, F, channels A and B of hydraulic oil circuit, assembly of valve group 28.2, chuck lubrication 34.2.

Structural features: the flip chuck 53.1, as the main component of the hydraulic chuck, plays the role of precision transmission in assembly positioning. In terms of processing design, it satisfies the assembly and cooperation of all other structures of the hydraulic chuck. The annular oil passage gland II 3.2 is fixed on one side of the flip chuck 53.1 with bolts 2.2 in the form of an end cover; two annular grooves are designed in the annular oil passage gland II 3.2, under the oil sealing effect of the sealing assembly 14.2 , forming two oil passages A and B with the flip chuck 53.1, supporting the hydraulic reversing circuits of six plunger hydraulic cylinders T and F. Similarly, the annular oil passage gland III 10.2 is fixed in the annular groove on the other side of the flip chuck 53.1 with bolts 11.2 in the form of an end cover; two annular grooves are designed in the annular oil passage gland III 10.2, and the seal assembly 16.2 Under the oil sealing effect, an oil channel A and an air channel Q are formed with the flip chuck 53.1. Six plunger hydraulic cylinders T and F are evenly distributed on the 360° of the flip chuck 53.1, forming symmetrical clamping on the collar. For the formation of the oil passages of the rodless chamber (A5, A18) and the rod chamber (B5, B9) in Figure 9 of each hydraulic cylinder, oil hole passages (A3, B2, B6, A16) are designed on the flip chuck 53.1 ). Among them, 3 hydraulic plungers (T1, T2, T3) are linked with the mechanical synchronous mechanism (4.2, 5.2, 8.2) at an angle of 120°, and have the function of synchronous centering and clamping under low pressure conditions; the other 3 A hydraulic plunger (F1, F2, F3) is in a floating clamping state, and its clamping center is not restricted, and it starts to move when the hydraulic pressure is greater than 8 kg.

The mechanical synchronous mechanism (4.2, 5.2, 8.2) is mechanically designed according to the liquid pressure below 8 kg, which ensures that the synchronous ring 4.2 passes through the synchronous pin 5.2 and the 3 columns while the low pressure pushes the three plungers T1, T2, T3 to move. The plugs T1, T2, and T3 are connected to control the consistency of the movement speed of the three plungers T1, T2, and T3, thereby realizing the function of 3-jaw centering clamping.

12.2, 3 F cylinders 7.2 Outer circular moving piston 38.2 The upper end of the rectangular opening is in the direction of the upper plane, parallel to the annular oil circuit gland II 3.2 and loaded into the 6 of the flip chuck 53.1 39.2 in a positioning hole, the rectangular opening at the upper end of the moving piston 38.2 realizes that the piston moving parts of the 6 hydraulic cylinders T, F communicate with the synchronous ring 4.2 and install the annular groove R3. The assembly holes 37.2 that restrict their movement are processed on the circumference of the six plungers. When they are assembled, they are positioned on a vertical rectangular plane and in the rectangular square holes. The sleeve assembly is to prevent the 6 plungers from rotating on the circumference during the linear motion; the cylindrical ends of the 3 synchronizing pins 5.2 are movably fitted into the hollows of the guide sleeves 8.2 of the 3 T cylinders, and the rectangular ends are movably fitted into the synchronous Ring 4.2 in a rectangular groove. The other 3 F cylinders do not have this assembly and are floating cylinders. Two cylinder heads (1.2, 6.2) with locking seats are installed in the center of the outer circle of the vertical flip chuck 53.1, and four cylinder heads 26.2 are installed on the outer circles of the chucks of the other four cylinder bodies to form a 6 hydraulic cylinder structures, sealing components include 33.2 and 34.2, etc., and the cylinder head is fastened with bolt 27.2.

The actions of hydraulic oil channel, low-pressure centering and high-pressure floating clamping are completed:

Piston-type hydraulic cylinders (T1, T2, T3) low-pressure centered synchronous oil passage oil inlet channel: the annular chamber A0 composed of the oil passage positioning sleeve 8.1 and the flip chuck 53.1: C8 in Figure 9 → the oil in the flip chuck 53.1 In the hole diagram 9, C9 → A1 → when the hydraulic pressure is less than 8 kg, the oil hole D2 of the flip chuck 53.1 → the annular channel D3 formed by the assembly of the cylinder body 12.2 and the flip chuck 53.1 → the plunger hydraulic cylinder (T1, T2, T3 )’s rodless chamber D4 → the pressure liquid pushes the three plungers to move toward the center of the overturn chuck 53.1 to clamp the collar, and at the same time drives the synchronization ring 4.2 to rotate through the three synchronization pins 5.2, and the rotation of the synchronization ring 4.2 forcibly restricts The three plungers move at the same speed to complete the low-pressure centering clamping process; the high-pressure clamping of the three plungers (T1, T2, T3) can be completed when the pressure of the three D4 chambers rises to the required high pressure. The oil return of the rod chamber B5 of the three hydraulic cylinders (T1, T2, T3): B5 oil → oil hole B4 of the cylinder body 12.2 → the annular chamber B3 composed of the cylinder body 12.2 and the flip chuck 53.1 → the flip chuck 53.1 oil Hole B2 → circular oil groove formed by annular oil passage gland II 3.2 and overturn chuck 53.1 B1 → oil hole in overturn chuck 53.2 → A9 in Fig. 9 → annular cavity formed by oil passage positioning sleeve 8.1 and overturn chuck 53.1 B0: A8 oil return in Figure 9.

When the pistons of the three hydraulic cylinders (T1, T2, T3) are opened, the pressure oil and oil return of the two oil circuits are completed through reversing. B0 cavity is pressure oil → B1 → B2 → B3 → three rod chambers B4, under the action of pressure oil, the three pistons retreat and open; the oil return of the three rodless chambers D4 → D3 → D2 → A1 → A0 returns Oil.

Piston hydraulic cylinder (F1, F2, F3) floating high-pressure clamping oil channel: when the system pressure is greater than 8 kg → A1 → turn over chuck 53.1 oil hole F5 → valve body 28.2 oil hole F6 → F7 → F8 → F9 → F10 and F17 → 11.2 chamber and 16.2 chamber (Note: under the push of pressure oil and spring 19.2, steel ball 20.2 bears against check valve body 21.2, making the oil passage between F16 and F7 blocked.) → the pressure oil in F11 chamber pushes Valve core 22.2 and spring 23.2 open the valve port → F12 chamber → valve body oil hole F13 → overturn chuck 53.1 oil hole F14 → annular oil circuit gland Ⅲ 10.2 and overturn chuck 53.1 assembled to form an annular oil groove F15 → overturn chuck 53.1 Oil hole 18.2 → oil groove F19 composed of cylinder body 7.2 and flip chuck 53.1 → enter the rodless chamber F20 of three hydraulic cylinders (F1, F2, F3), and under the action of high pressure oil, the three pistons move toward the center of the chuck Move and hold the workpiece. The oil return of the rod chamber B9 of the three hydraulic cylinders (F1, F2, F3): B9 oil → oil hole B8 of the cylinder body 7.2 → the annular chamber B7 composed of the cylinder body 7.2 and the flip chuck 53.1 → the flip chuck 53.1 oil Hole B6 → circular oil groove formed by annular oil passage gland II 3.2 and overturn chuck 53.1 B2 → oil hole in overturn chuck 53.1 C9 in Fig. 9 → annular cavity formed by oil passage positioning sleeve 8.1 and overturn chuck 53.1 B0: A8 oil return in Figure 9.

When the pistons of the three hydraulic cylinders (F1, F2, F3) are opened, the pressure oil and return oil of the two oil circuits are converted by reversing: B0 chamber is pressure oil → B2 → B6 → B7 → B8 → three rod chambers B9 → Under the action of pressure oil, the three pistons retreat and open; the oil return of the three rodless chambers F20→F19→F18→F15→F14→F13→F12 chamber→F8→F7 chamber→under the action of oil return backup pressure, Push the steel ball 20.2 to compress the spring 19.2 away from the one-way valve body 21.2 to form a passage → F16 → F17 → F5 → A1 → A0 to return oil.

As an important component of the hydraulic system, the accumulator is to meet the pressure compensation of the actuator when the pressure is lost. This statement states that the clamping of the piston in the chuck is an important process to meet the machining accuracy. In order to compensate the pressure loss of the pressure oil during the clamping process, two accumulators (31.2, 35.2) are designed at the symmetrical positions of the chuck. The structural characteristics of this accumulator are: the guide end cover 13.2 is installed in the positioning hole of the inner ring of the flip chuck 53.1, the annular gland 15.2 is installed in the positioning hole of the outer ring of the flip chuck 53.1, and the moving piston 38.2 is compressed by 8 sets of disc springs 17.2 The thrust generated by the deformation is supported in the inner holes of the annular gland 15.2 and the guide end cover 13.2. When 6 sets of pistons (T1, T2, T3, F1, F2, F3) clamp the coupling, A1 channel is pressure oil, A1 pressure oil→turn over chuck 53.1 oil hole X22→X24→ring gland 15.2 oil hole X23 →The cavity 25.2 formed by the assembly of the annular gland 15.2 and the moving piston 38.2. Under the action of high-pressure oil, the moving piston 38.2 moves toward the center of the chuck and compresses the disc spring. The storage of high-pressure oil begins until the pressure generated by the high-pressure oil is equal to the thrust generated by the deformation of the disc spring. The moving piston 38.2 stops moving and the X25 cavity is filled. A certain volume of high-pressure oil is injected; when there is oil leakage in the D oil circuit and the F oil circuit, the high-pressure oil in the X25 chamber performs pressure compensation through the X channel and the A channel to maintain the clamping force of the coupling during processing stability.

The structure of the chuck lubrication 34.2 mainly includes the rotating contact of the synchronous ring 4.2 flipping the chuck 53.1, and the movement of the internal components of the 6 cylinders (T1, T2, T3, F1, F2, F3). When the 6 pistons are clamped from In the process of opening, B1 channel is pressure oil: B1 oil → overturn chuck 53.1 oil hole R2 → overturn the sealing chamber R7 of lubricating valve 36.2 in chuck 53.1 → through lubricating valve 36.2 each time the pressure oil acts, the lubricating valve 36.2 Generate one or two drops of oil → turn over the oil tank R5 of the chuck 53.1 → turn over the oil circuit R4 of the chuck 53.1 → in the ring seal groove R3 where the synchronization ring 4.2 is assembled in the turn over chuck 53.1 → as the oil continues to increase, The annular sealing groove R3 is filled with oil to lubricate the relative movement between the synchronous ring 4.2 and the flip chuck 53.1 → After the annular sealing groove R3 is filled with oil, due to the movement of the pistons of the six hydraulic cylinders T and F and the synchronous ring 4 Install the annular groove R3 through the rectangular opening 38.2 together with → the oil enters the relative movement part R6 of the 6 hydraulic cylinders T and F, this statement indicates the integrity of the chuck lubrication.

The chuck turning device shown in Fig. 9, Fig. 10 and Fig. 11 includes: a hydraulic rotating shaft mechanism, a hydraulic control circuit of the action element of the chuck, an air circuit and a turning mechanism;

The hydraulic rotating shaft mechanism includes: a hydraulic rotating shaft 3.1 and a rotating shaft support body 51.1; the hydraulic rotating shaft 3.1 is positioned on the supporting body 51.1 through the positioning hole at the front end of the rotating shaft supporting body 51.1 and fastened by bolts; the turning chuck 53.1 is set on the hydraulic rotating shaft 3.1, and the overturning chuck 53.1 is provided with an oil circuit positioning sleeve 8.1 for fixing the hydraulic rotating shaft 3.1; the other end of the hydraulic rotating shaft 3.1 is assembled into the oil circuit positioning sleeve 8.1 of the overturning chuck 53.1, and is connected with the The axial and radial positioning of the overturn chuck 53.1; the overturn chuck 53.1 is processed with an axial positioning hole 25.1; the hydraulic control circuit and the air circuit form the chuck pressure with the oil distributor at the end of the headstock and the oil pipe in the inner hole of the main shaft circuit, and gas path;

The hydraulic control circuit and the air circuit form the chuck pressure circuit and the air circuit with the oil distributor at the end of the headstock and the oil pipe in the inner hole of the main shaft;

The overturn mechanism includes: overturn gear shaft 11.1, cylindrical thrust bearing 16.1 and bearing gland 15.1; overturn gear shaft 11.1 and overturn chuck 53.1 axis positioning hole 25.1 are a transitional fit, and are positioned on the overturn chuck by pressure block 9.1 and fastening bolt 10.1 The axial direction of the disk 53.1 realizes rigid connection; the upper part of the gear end of the gear shaft 11.1 is turned over, and the inner ring of the cylindrical thrust bearing 16.1 is installed, and the outer ring of the cylindrical thrust bearing 16.1 is embedded in the positioning hole 54.1 of the bearing gland 15.1, and the bearing pressure The cover 15.1 and the outer ring of the bearing are assembled into the positioning hole I 55.1 of the flip support body 51.1, and the outer circle of the bearing gland 15.1 is fixed with bolts in the axial direction;

The components of the chuck turning device shown in Figure 9, Figure 10 and Figure 11 include: hydraulic rotary shaft mechanism (3.1, 6.1, 7.1), hydraulic control circuit A, C and air circuit B of the chuck action element, turning mechanism ( 11.1, 28.1, 32.1) Chuck turning hydraulic circuit D, E, turning mechanism lubricating oil circuit F, chuck turning position feedback mechanism.

The turning shaft 3.1 in the hydraulic rotating shaft mechanism (3.1, 6.1, 7.1) is called a hydraulic rotating shaft because the turning chuck 53.1 uses hydraulic oil to form a circuit through the oil hole channel inside the turning shaft 3.1. The turning shaft 3.1 passes through the positioning hole 5.1 at the front end of the turning support body 51.1, and is fastened and positioned on the turning support body 51.1 with bolts 4.1; The thrust bearing 6.1 completes the axial and radial positioning with the overturn chuck 53.1, and the adjustment nut 7.1 on the outer ring of the thrust bearing 6.1 realizes the gap adjustment of the thrust bearing 6.1 through thread rotation, and at the same time realizes the adjustment between the center of the overturn chuck 53.1 and the center of the main shaft. Ensure the positioning of the chuck in the support body and the overturning of the relative support body. After adjusting the positioning, lock it with the locking mechanism 54.1.

The hydraulic control circuit (A, C) and the air circuit B form the chuck pressure circuit and the air circuit with the oil circuit distributor at the end of the headstock and the oil pipe in the inner hole of the main shaft. At the same time, three hole-type passages (A1, B1, C1) are arranged in parallel in different layers of the connecting flange 2.3.

The hydraulic circuit is composed of channel A and channel C, which completes the clamping and opening action of the clamping piston of the chuck. The path of channel A is: connect A1 in flange 2.3 → turn over the channel in oil block Ⅰ1.1 → connect oil pipe channel A2 → turn over the channel in oil block II 2.1 → connect oil pipe channel A3 → enter the turning axis Passage A4 in 3.1→Channel A5 in the turning shaft 3.1→Enter the annular cavity A6 formed by the turning shaft 3.1 and the oil passage positioning sleeve 8.1→Through the oil hole A7 of the oil passage positioning sleeve 8.1→Enter the oil passage positioning sleeve 8.1 and Turn over the annular cavity A8 formed by the chuck 53.1. The path of channel C is: connect C1 in flange 2.3 → turn over the channel in oil block Ⅰ1.1 → connect oil pipe channel C2 → turn over the channel in oil block II 2.1 → connect oil pipe channel C3 → enter the turning axis Channel C4 in 3.1→Channel C5 in the turning shaft 3.1→Enter the annular cavity C6 formed by the turning shaft 3.1 and the oil passage positioning sleeve 8.1→Through the oil hole C7 of the oil passage positioning sleeve 8.1→Enter the oil passage positioning sleeve 8.1 and Turn over the annular cavity C8 formed by the chuck 53.1. The above two oil circuits meet the hydraulic principle requirements of the chuck actuator, and the O-ring design is used for the seal of the connection.

The design of the compressed air channel is exactly the same as that of the hydraulic channel: it consists of B1→B2→B3→B4→B5→B6→B7→B8, which realizes the delivery of compressed air to the turning chuck 53.1.

The overturning mechanism is designed as a symmetrical design of the hydraulic rotating shaft mechanism on the 180° axis. The overturning gear shaft 11.1 is the core component, which not only realizes another positioning support point between the overturning chuck 53.1 and the overturning support body 51.1, but also through the overturning gear shaft 11.1 The cooperation and movement of the upper gear and the hydraulic rack complete the two-sided flip of the flip chuck at 53.1180°. Its structural characteristics are as follows:

The overturn gear shaft 11.1 and the overturn chuck 53.1 axis positioning hole 25.1 are a transitional fit, and the pressure block 9.1 and the fastening bolt 10.1 are positioned in the overturn chuck 53.1 axis direction to realize rigid connection. The upper part of the gear end of the flip gear shaft 11.1 is installed with the inner ring of the cylindrical thrust bearing 16.1, and the outer ring of the cylindrical thrust bearing 16.1 is embedded in the positioning hole 54.1 of the bearing gland 15.1, and the bearing gland 15.1 is assembled into the flip support together with the bearing outer ring The positioning hole 55.1 of the body 51.1 and the outer circle of the bearing gland 15.1 are fixed with bolts in the axial direction, and the adjustment pad realizes the clearance adjustment of the cylindrical thrust bearing 16.1, and simultaneously realizes the adjustment of the center of the turning chuck 53.1 and the center of the main shaft. Ensure the positioning of the chuck in the support body and the overturning of the relative inversion support body 51.1.

The overturning action of the overturning chuck 53.1 depends on the cooperation and movement of the shaft end gear of the overturning gear shaft 11.1 and a pair of hydraulic racks (28.1, 32.1), and its movement power is realized by the pressure oil in the hydraulic cylinder structure. . The hydraulic racks (28.1, 32.1) are piston-type hydraulic racks, which are equivalent to the piston rods of the hydraulic cylinders. The piston ends of the hydraulic racks (28.1, 32.1) are installed in the hydraulic cylinder body 26.1, and there is an annular cylinder cover on the upper part of the rod cavity ( 27.1, 33.1) become the positioning connectors between the entire hydraulic cylinder block 26.1 and the positioning holes (55.1, 56.1) of the support body, and the ring-shaped cylinder head (27.1, 33.1) realizes the function of buffering and decelerating during the movement of the piston; the lower part of the rodless cavity is formed by The buffer positioning ring (25.1, 34.1) is composed of the cylinder head 35.1, and the buffer positioning ring (25.1, 34.1) plays the role of cylinder head positioning and hydraulic rack buffer deceleration. The hydraulic complete set is fastened on the overturn support body 51.1 by 4 bolts 23.1, and the sealing assembly (42.1, 43.1) is the oil sealing assembly of the hydraulic cylinder. The cylindrical part of the cylinder rod front end of the piston hydraulic rack (28.1, 32.1) is designed as a rack structure, and the cylindrical part is embedded in the annular thin-walled wear-resistant sleeve (29.1, 30.1), and the annular thin-walled wear-resistant sleeve (29.1, 30.1) is positioned on the flip support Among the two high-precision positioning holes (36.1, 57.1) in 51.1, the higher-precision hole processing is to meet the matching accuracy of the gear and rack during movement. The assembly positions of the two hydraulic racks 28.1 and 32.1 are shown in the figure 9. Assemble as shown in Figure 10 and Figure 11. The cover plate 14.1 is fixed with 4 bolts, which plays a sealing role for the cavity of the rack and pinion.

Composition of the hydraulic oil circuit and the characteristics of the flipping process of the flip chuck 53.1: the hydraulic oil circuit is composed of the D channel and the E channel, the pressure oil and the return oil are converted through the D and E channels, and the hydraulic racks 28.1 and 32.1 are realized. The reciprocating motion in the cylinder body 26.1, and in the meshing process of the gear and the rack, complete the positive and negative 180 ° turnover of the flip chuck 53.1. The details are as follows:

The hydraulic control circuits D and E form the chuck turning pressure circuit together with the oil distributor at the end of the headstock and the oil pipe in the inner hole of the main shaft. At the same time, two hole-type channels D1 and E1 are arranged in parallel in different layers of the connecting flange 2.3.

The composition of the D channel: connecting D1 in the flange 2.3 → the oil block 58.1 and the hydraulic cylinder cover 35.1 connecting channel D2 → respectively entering the channel D5 in the hydraulic cylinder cover 35.1 and the channel D3 in the cylinder body 26.1, in the cylinder cover Channel D5 of 35.1 → channel D6 of 35.1 in the cylinder head → rodless cavity D7 of the right hydraulic rack hydraulic cylinder; channel D3 in the cylinder body 26.1 → channel D4 in the turning support body 51.1 → annular cylinder head 27.1 and turning support Body 51.1 positioning hole cooperates to form the annular groove D8 → through the annular cylinder head 27.1 through hole D9 → the rod chamber D10 of the hydraulic rack hydraulic cylinder on the left side. The connection of the D channel forms the back-and-forth oil channel of the rodless chamber D7 of the right hydraulic rack hydraulic cylinder and the rod chamber D10 of the left hydraulic rack hydraulic cylinder.

The composition of the E channel: connecting E1 in the flange 2.3 → oil block 58.1 → oil block 58.1 and the hydraulic cylinder cover 35.1 to connect channel E2 → enter the channel E3 in the hydraulic cylinder cover 35.1 and the channel E4 in the cylinder body 26.1 respectively , Channel E3 of 35.1 in the cylinder head → channel E6 of 35.1 in the cylinder head → rodless cavity E7 of the left hydraulic rack hydraulic cylinder; channel E4 in the cylinder body 26.1 → channel E5 in the flip support body 51.1 → ring cylinder The annular groove E8 formed by the cooperation of the cover 33.1 and the positioning hole of the overturning support body 51.1 → passes through the through hole E9 of the annular cylinder cover 33.1 → the rod chamber E10 of the right side hydraulic rack hydraulic cylinder. The connection of the E channel forms the back-and-forth oil channel of the rodless chamber E7 of the left hydraulic rack hydraulic cylinder and the rod chamber E10 of the right hydraulic rack hydraulic cylinder.

When the D channel is pressure oil, the D7 chamber and the D10 chamber are continuously filled with pressure oil, pushing the hydraulic rack 32.1 upward, pushing the hydraulic rack 28.1 downward, and the E7 and E10 oil returns to the oil through the E channel. And during the movement, the chuck is rotated 180° counterclockwise; when the E channel is pressure oil, the E7 cavity and the E10 cavity are continuously filled with pressure oil, pushing the hydraulic rack 28.1 upward, pushing the hydraulic rack 32.1 downward, D7 and D10 The oil returns to the oil through the D channel, and the chuck rotates 180°clockwise during the meshing and movement of the rack and pinion.

Coarse positioning during chuck turning motion mainly includes positioning hook plate 46.1, buffer block 44.1, disc spring 48.1. The positioning hook plate 46.1 is fastened on the flip chuck 53.1 with bolts through the positioning hole, the buffer block 44.1 and the disc spring 48.1 are assembled in the positioning hole of the support body, and fastened with the bolt 47.1, and the number of disc springs 48.1 is 7 pairs . During the overturning process of the overturning chuck 53.1, the positioning hook plate 46.1 contacts the buffer stopper 44.1. Due to the hydraulic driving force, the positioning hook plate 46.1 presses the buffer stopper 44.1 to compress the disc spring. When the hydraulic driving force and the disc spring are pressed When the elastic force generated by the compression is equal, the rough positioning of the chuck is completed. There are two sets of this assembly on the flipping support body 51.1 and the flipping chuck 53.1 to meet the flipping requirements of the front and back sides of the chuck.

The lubrication of the overturn gear shaft 11.1 rack (28.1, 32.1) and the cylindrical thrust bearing 16.1 is driven by hydraulic oil, and the oil is replenished regularly through the new lubrication valve 52.1 to achieve the purpose of continuous lubrication, especially in the design. The lubricating part channel makes it unique in design: when the oil tank A8 is pressure oil → enters the through hole F2 in the flip chuck 53.1 → enters the lubricating valve 52.1 → each time the pressure oil acts, one or two drops of oil enter F3 Through hole → into the annular groove 59.1 of the flip chuck 53.1 → through the through holes F4 and F5 → to reach the cavity F6 where the rack and pinion (11.1, 28.1, 32.1) mesh and the cylindrical thrust bearing 16.1 rotates, completing the lubricating oil supply.

The chuck flip position feedback mechanism is to confirm whether the chuck is flipped, whether it is flipped in place, etc., to ensure the correct and safe position during processing. Including two sets of 180° flip A, B surface position signals and a set of positive and negative 90° rotation process signals. Principle and process: The positioning sleeves (24.1, 37.1) in the position signals of the A and B surfaces are assembled on the center line of the hydraulic rack (28.1, 32.1), and positioned on the cylinder head 35.1 through the shaft retaining ring (61.1, 63.1) In the two positioning holes, the turning guide rods (39.1, 41.1) and springs (22.1, 38.1) pass through the guide nuts (60.1, 64.1), and are installed into the positioning sleeves (24.1, 37.1), and ensure that the turning guide rods (39.1, 41.1) Movement on the outside of the positioning sleeve (24.1, 37.1). The cam sleeve 17.1 in the positive and negative 90° rotation signal is installed on the gear end of the gear shaft 11.1, and relies on the assembly of the cylindrical thrust bearing 16.1 to realize axial positioning, and the cylindrical positioning pin 65.1 ensures circumferential positioning. Under the pressure of guide nut 66.1, spring 19.1 pushes guide rod group 18.1 to keep against the outer ring of cam sleeve 17.1. Spring 19.1, guide nut 66.1 and part of guide rod group 18.1 are installed in the center of cylinder head 35.1. Guide rod group 18.1 All the other parts are packed into the holes in the cylinder body 26.1 and the overturn support body 51.1, and three guide rods in the guide rod group 18.1 are on a cylinder center line. When the overturning chuck 53.1 drives the cam sleeve 17.1 to rotate at plus or minus 180°, through the conversion of low point → high point → low point, coupled with the action of spring force, the guide rod group 18.1 is urged to move away from → close to → away from the signal The induction switch 20.1 realizes position judgment. The signal induction switch 20.1 is installed on the support 62.1, and the holding position is adjustable.

The chuck locking device shown in Figures 12 and 13 includes: a locking positioning hydraulic cylinder, a chuck locking seat, a hydraulic circuit and a position feedback mechanism.

The locking and positioning hydraulic cylinder is a double-piston rod hydraulic cylinder, and the hydraulic cylinder is composed of a cylinder body 14, a bidirectional piston 15, a cylinder cover 11 and a sealing assembly 29. The cylinder body 14 is positioned in the axis positioning hole 30 of the support body 1.3 through a positioning pin, and is fixed with bolts to become a fixed body for the relative displacement of the two-way piston 15 . The cylinder head 11 of the hydraulic cylinder is fixed on the end face of the cylinder body 14 with bolts through the positioning of the positioning pin 12. The precise positioning of the positioning pins in the cylinder body 14 and the cylinder head 11 is to meet the installation of the hydraulic pipeline and the position feedback mechanism. The dust cover 9 is fastened on the outermost end of the cylinder block with bolts 13, which plays a protective role for the hydraulic components. The locking and positioning hydraulic cylinder is symmetrically designed and located on the 1.3180° plane of the support body;

The chuck locking seat is composed of a positioning cylinder head 22 and a locking seat 16. The outer circle of the locking seat 16 and the inner circle of the positioning cylinder head 22 are assembled in one piece through strong interference fit, and its components pass through the cylindrical hole 33, the center positioning of the locking hole 32 on the thickness of the chuck 31 and the axis positioning of 180° on the outer circle of the chuck 31 are realized.

The hydraulic circuit consists of two oil circuits: oil circuit 1, oil circuit U in connecting flange 2 → oil pipeline 26 → oil hole 25 in connecting fixed block 5 → plug-in oil pipe 24 → oil hole 20 in cylinder block 14 →Enter the lower cavity 27 of the hydraulic cylinder; oil passage 2, connect the oil passage L in the flange 2.3→oil pipe 26→connect the oil hole 25 in the fixed block 5→plug-in oil pipe 24→the oil hole 19 in the cylinder body 14→ Enter the upper cavity 23 of the hydraulic cylinder. When oil circuit 1 is pressure oil, oil circuit 2 is low-pressure oil return. At this time, the two-way piston 15 moves away from the support body 1.3 under the push of pressure oil, so that the locking contact is completely disengaged; when oil circuit 1 is low-pressure Oil return, when the oil circuit 2 is pressure oil, at this time, the two-way piston 15 moves towards the support body 1.3 under the push of the pressure oil, and the locking contact becomes two rigid connections for the precise positioning of the chuck.

The position feedback mechanism is composed of a push disk 10, a moving rod 7, a spring 6, a sensor 3 and a sensor bracket 4. Promote disc 10 to be fastened on the non-locking end of bidirectional piston 15 with screw, and move accordingly. The other parts are positioned by means of supports. When the two-way piston 15 moves to the locking direction, the inclined plane 8 that pushes the disc 10 constantly pushes the moving rod 7 to move backward, the spring is compressed, the end of the moving rod 7 approaches the sensor 3, and the sensor 3 sends a position signal. Conversely, when the two-way piston 15 moves in the opposite direction of locking, the slope 8 of the disc 10 is constantly moving away from the moving rod 7, and the moving rod 7 is constantly moving away from the sensor 3 under the action of the spring force, so as to meet the requirements of the electrical principle.

The supporting body 1.3 is a casting with high processing precision, and between the front and rear end faces, there are 4 supporting parts for oil circuit assembly and flip assembly, and 4 casting open spaces for chip removal.

The utility model adopting the above-mentioned technical scheme realizes a series of actions such as clamping and turning of the hydraulic chuck through the full hydraulic control method, and the hydraulic chuck has high action accuracy and high bearing capacity, and can process high-standard components and It applies.

And has the following obvious advantages:

1. The overturning chuck has a ring-column structure, and six stepped through holes are designed in the 360° overturning chuck body to realize the assembly of six plunger-type hydraulic cylinders (T, F), so that the hydraulic chuck is in the ring The body has the function of clamping the cylindrical workpiece (coupling).

2. Hydraulic passages (A, B) formed by the design of annular oil passage gland II, annular oil passage gland III) and the assembly of the overturn chuck, and various oil hole passages (B, D, B) designed inside the overturn chuck F), which jointly constitute the piston clamping and piston opening actions of six hydraulic cylinders (T, F), forming a hydraulic oil circuit for controlling reversing.

3. The mechanical synchronous mechanism is in accordance with the design idea of no mechanical deformation under low pressure (less than 8 kg), and cleverly combines the hydraulic principle of single sequence valve to realize the low pressure driving of three pistons (T1, T2, T3) to move to the center of the chuck , The mechanical synchronization mechanism implements the clamping process of mechanically controlled constant-speed synchronous movement, and the chuck completes the function of three-jaw low-pressure centering clamping of the workpiece. With the pressure exceeding 8 kg, 6 pistons (T, F) jointly clamp the coupling under high pressure.

4. According to the requirements of the accumulator in the hydraulic design principle, and in order to meet the pressure loss of the hydraulic cylinder (T, F) in the flip chuck during the clamping process due to various reasons, two piston-type energy accumulators are specially designed. device, providing pressure compensation for the clamped state.

5. In the lubrication design, the application of the lubrication valve in the hydraulic system is boldly used; combined with the overall design of the chuck, the communication structure is cleverly used to realize the dynamic coordination lubrication of the moving parts of the chuck.

6. The hydraulic oil groove and oil hole channel are designed and processed in the turning shaft, and the A and C oil circuits formed during the assembly process meet the oil circuit control of the hydraulic actuator during the rotation of the hydraulic chuck.

7. The turning shaft is used as a support point of the turning chuck on the supporting body, and the turning gear shaft is used as another supporting point of the turning chuck on the supporting body. During the bearing assembly process, the turning chuck is realized at 0 The technical conditions for positioning adjustment on the axis of °-180° and rotation around the axis of 0°-180°.

8. Through the rack piston hydraulic cylinder design and the D, E oil circuit design in the turning mechanism, the hydraulic power for the rack and rack bidirectional relative movement is provided.

9. The positioning of the wear-resistant sleeve on the support body in the turning mechanism provides a spatial reference for the movement guidance of a pair of hydraulic racks, and at the same time provides a technical guarantee for the meshing accuracy of the racks and pinions.

10. During the meshing process of the pinion at the front end of the flip gear shaft and the hydraulic rack, through the reciprocating relative movement of the hydraulic rack, the hydraulic chuck can be flipped on both sides of the support body by plus or minus 180°. And through position signal control to ensure the safe operation of the equipment.

11. The design of the cylinder body, bidirectional piston, cylinder head and sealing components in the hydraulic cylinder assembly realizes the application of the hydraulic cylinder principle in the locking and positioning process of the hydraulic chuck through the oil circuit control.

12. The two-way piston in the hydraulic cylinder protrudes in the positive and negative 90° direction of the turning axis of the support body, and is combined with the compression of the column and hole of the locking seat in the chuck transition piece to realize the chuck on the turning plane. The other two positioning support points.

The above are only preferred embodiments of the present utility model, and do not limit the utility model in any form. Although the utility model has been disclosed as above with preferred embodiments, it is not intended to limit the utility model. Any Those who are familiar with this profession can use the technical content disclosed in the appeal to make some changes or modify them into equivalent embodiments without departing from the technical solution of the utility model without departing from the technical solution of the utility model. Any simple modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the utility model still belong to the scope of the technical solution of the utility model.

Claims (4)

1. A hydraulic flipping chuck device, characterized in that: it includes a support connector, a hydraulic chuck, a chuck flipping device and a chuck locking device; The supporting connector includes: a supporting body (1.3) and a connecting flange (2.3), which are positioned and assembled through short cylindrical positioning holes (27.3) processed on the bottom of the supporting body (1.3) and the upper end surface of the connecting flange (2.3), And tightened by the bolt circumference; The connecting flange (2.3) is processed with a plurality of independent oil hole passages, and the oil hole passages are connected with the oil pipelines of the support body (1.3) one by one, forming a turning chuck, a locking device, a turning The hydraulic circuit of each actuator in the device; An oil circuit block (29.3) is fixed at the lower end of the supporting connector, and the oil circuit block (29.3) is connected to the oil circuit of the oil circuit distributor on the machine tool through the oil pipe; The support body (1.3) is provided with four chip removal cavities symmetrically distributed to the center of the support body (1.3); the outer wall of the support body (1.3) is processed with convex edges, and the support body (1.3) is convex Four annular glands (12.3) are fixed along the side wall; the lower end of the annular gland (12.3) is fixed with the annular oil passage gland I (3.3), namely the annular gland (12.3), the annular oil passage gland I ( 3.3) Form a sealed cavity with the outer wall of the support body (1.3); The axial upper end of the support body (1.3) is processed with 4 positioning holes for installing the hydraulic chuck, and the positions of the 4 positioning holes are distributed in 4 equal parts of the support body (1.3); the chuck turning device is fixed in a pair of symmetrically distributed positioning holes; the chuck locking device is fixed in another pair of symmetrically distributed positioning holes; The hydraulic chuck is a circular ring with a center-hole columnar structure, and its mechanical structure includes: an overturn chuck (53.1), an annular oil passage gland II (3.2) fixed on the overturn chuck (53.1), an annular oil passage pressure Cover III (10.2), mechanical synchronous mechanism, 6 plunger hydraulic cylinders distributed around the circumference, hydraulic oil circuit and valve group assembly and chuck lubrication assembly (34.2) matched with 6 plunger hydraulic cylinders; The chuck (53.1) is provided with grooves for placing 6 plunger hydraulic cylinders; the mechanical synchronization mechanism is arranged inside the plunger hydraulic cylinders; The annular oil passage gland II (3.2) and the annular oil passage gland III (10.2) are respectively fixed on both ends of the flip chuck (53.1); The turning chuck (53.1) is processed with a transverse shaft hole; the chuck turning device is installed in the shaft hole of the turning chuck (53.1) through the hydraulic rotating shaft (3.1), and the chuck turning device and the turning chuck The discs (53.1) are linked; the chuck locking mechanism is arranged on the axial side of the shaft hole of the flip chuck (53.1). 2. A hydraulic flipping chuck device according to claim 1, characterized in that: said chuck flipping device comprises: a hydraulic rotating shaft mechanism, a hydraulic control circuit of a chuck operating element, an air circuit, and a flipping mechanism; The hydraulic rotating shaft mechanism includes: a hydraulic rotating shaft (3.1) and a rotating shaft support body (51.1); the hydraulic rotating shaft (3.1) is positioned on the support body through the positioning hole at the front end of the rotating shaft support body (51.1) and fastened by bolts (51.1); the overturn chuck (53.1) is set on the hydraulic rotating shaft (3.1), and the overturning chuck (53.1) is provided with an oil circuit positioning sleeve (8.1) for fixing the hydraulic rotating shaft (3.1); the The other end of the hydraulic rotating shaft (3.1) is assembled into the oil circuit positioning sleeve (8.1) of the flip chuck (53.1), and the axial and radial positioning with the flip chuck (53.1) is completed through the thrust bearing; The flip chuck (53.1) is machined with an axial positioning hole (25.1); the hydraulic control circuit and air circuit form the chuck pressure circuit and air circuit with the oil circuit distributor at the end of the headstock and the oil pipe in the inner hole of the spindle; The turning mechanism includes: turning gear shaft (11.1), cylindrical thrust bearing (16.1) and bearing gland (15.1); The overturning gear shaft (11.1) is a transition fit with the axis positioning hole (25.1) of the overturning chuck (53.1), and is positioned in the axial direction of the overturning chuck (53.1) by the pressure block (9.1) and fastening bolts to realize a rigid connection ;The upper part of the gear end of the turning gear shaft (11.1) is installed with the inner ring of the cylindrical thrust bearing (16.1), and the outer ring of the cylindrical thrust bearing (16.1) is embedded in the positioning hole (54.1) of the bearing gland (15.1) , the bearing gland (15.1) and the bearing outer ring are assembled into the positioning hole I (55.1) of the support body (51.1), and the outer circle of the bearing gland (15.1) is fixed with bolts in the axial direction. 3. A hydraulic flip chuck device according to claim 1, characterized in that: the chuck locking device comprises: a locking positioning hydraulic cylinder, a chuck locking seat, a hydraulic circuit and a position feedback mechanism; The locking and positioning hydraulic cylinder is a double-piston rod hydraulic cylinder, and the hydraulic cylinder is composed of a cylinder body (14), a two-way piston (15), a cylinder head (11) and a sealing assembly (29); the cylinder body (14) passes through The positioning pin is positioned in the axis positioning hole (30) of the support body (1.3) and fixed with bolts to form a fixed body for the relative displacement of the two-way piston (15); the hydraulic cylinder head (11) is positioned by the positioning pin (12) , fastened to the end face of the cylinder body (14) with bolts, the precise positioning of the positioning pins in the cylinder body (14) and the cylinder head (11) is to meet the installation of the hydraulic pipeline and the position feedback mechanism; the dust cover (9) is bolted (13) Fastened to the outermost end of the cylinder body (14); the locking and positioning hydraulic cylinder is symmetrically designed and located on the 180° plane of the support body (1.3); The chuck locking seat is composed of a positioning cylinder head (22) and a locking seat (16). The outer circle of the locking seat (16) and the inner circle of the positioning cylinder head (22) are assembled through interference fit. The assembly is positioned through the cylindrical hole (33), that is, the center positioning of the locking hole (32) on the thickness of the chuck (31) and the axis positioning of 180° on the outer circle of the chuck (31). 4. A hydraulic flip chuck device according to claim 1, characterized in that: the support body (1.3) is a casting with high machining accuracy, and there is a machined part between the front and rear end faces for installing oil 4 support sections for road assembly and flip assembly, and 4 cast open spaces for chip evacuation.

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