CN210632955U - Front Rotary Chuck - Google Patents
Front Rotary Chuck Download PDFInfo
- Publication number
- CN210632955U CN210632955U CN201921169361.3U CN201921169361U CN210632955U CN 210632955 U CN210632955 U CN 210632955U CN 201921169361 U CN201921169361 U CN 201921169361U CN 210632955 U CN210632955 U CN 210632955U
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- Prior art keywords
- oil
- ring
- ring seat
- chuck body
- grooves
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Abstract
本实用新型公开了一种前置式回转夹头，其包含：一环座、一夹头本体、一连动单元以及一后盖，该夹头本体利用油压方式控制该连动单元滑移作动，进而连动该滑动环座达到各该夹爪滑块的夹持、放松，且该夹头本体实际运转时，该第一油孔的掣动油压力持续输入，同时将活塞环与后盖间的掣动油排出，使活塞环得以确实往后盖方向位移达到夹持状态，大幅提升结构的夹持力道，以及确保夹头本体运转时的夹持稳定度，而且运转时还能同时通过掣动油滞留于该环座的第一、二输油槽而达到润滑、降温的效果，有效降低夹头本体运转过程中有过热变形的疑虑，更能支持于高转速的加工作业，进而提升加工效率及使用时限。
The utility model discloses a front-mounted rotary chuck, which comprises: a ring seat, a chuck body, a linkage unit and a rear cover. The chuck body uses an oil pressure method to control the sliding movement of the linkage unit, thereby linking the sliding ring seat to achieve the clamping and loosening of each clamping claw slider. When the chuck body is actually operating, the braking oil pressure of the first oil hole is continuously input, and the braking oil between the piston ring and the rear cover is discharged, so that the piston ring can be displaced toward the rear cover to achieve a clamping state, greatly improving the clamping force of the structure, and ensuring the clamping stability of the chuck body when it is operating. Moreover, during operation, the braking oil can be retained in the first and second oil delivery grooves of the ring seat to achieve the effects of lubrication and cooling, effectively reducing the doubts of overheating and deformation during the operation of the chuck body, and can better support high-speed processing operations, thereby improving processing efficiency and service life.
Description
Technical Field
The present invention relates to a chuck structure, and more particularly to a front rotary chuck.
Background
The chuck is a tool necessary for clamping and fixing work in processing of a common lathe machine tool and the like, the chuck is used for clamping a workpiece in processing and is used for processing operation along with rotation of the workpiece, in recent years, a pipeline with air pressure arranged inside is generally arranged for ensuring stable safety and rapid operation control of a processing locking tool, and an internal clamping jaw block is driven to shift and clamp the workpiece, but the air pressure chuck structure supplies pressure when the chuck stops rotating, the pressure is not applied to the clamping state only through a pressure maintaining structure during operation, and then the air-tight pressure maintaining is achieved through an internal O-shaped ring, so when the chuck body rotates along with the workpiece clamping and processing, the pressure loss condition of leakage can be caused by aging and fatigue of the O-shaped ring, or the pressure maintaining effect is influenced by the assembly precision of the O-shaped ring, the clamping stability can be continuously reduced due to the operation time, and the workpiece is unstable in clamping, risks exist in the operation process, the light person affects the processing quality, the precision is reduced, the serious person is more likely to generate work piece flying out and have industrial safety accidental injury, the danger is extremely high, and the safety is lacked.
In view of this, the inventor has made the manufacturing development and design experience of the related products for many years, and has finally obtained the utility model with practical applicability after designing and evaluating with care.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned disappearance that prior art exists, the utility model provides a forward formula gyration chuck.
The above structure includes: the annular seat is provided with a ring convex part at the center of the inner diameter, both sides of the ring convex part are provided with cambered surface grooves, the end surface of the ring convex part is provided with at least three caulking grooves in a ring mode, a first oil conveying groove and a second oil conveying groove are arranged between the three caulking grooves, the caulking grooves are provided with an oil seal, the outer diameter of the annular seat corresponds to the first oil conveying groove and the second oil conveying groove respectively and is provided with a first oil hole and a second oil hole respectively, the two cambered surface grooves are slidably and respectively provided with a plurality of balls, the annular seat is assembled into the chuck body from one end, the rear cover is assembled at the other end and is matched and linked with the chuck body, and the chuck body and the rear cover are in sliding contact with the balls of the two cambered surface grooves; the center of the chuck body is provided with a cavity in a penetrating way, the front section of the cavity is provided with a sliding ring seat, the periphery of the sliding ring seat is provided with a plurality of inclined cone guide grooves, the front end of the chuck body is provided with a plurality of sliding grooves from outside to inside corresponding to the inclined cone guide grooves of the sliding ring seat, the end surface of the chuck body is provided with a plurality of through outlets corresponding to the sliding grooves, each sliding groove is provided with a clamping jaw sliding block in a sliding way, the inner side of each clamping jaw sliding block is provided with a guide block which is in guiding linkage with each inclined cone guide groove, the middle section of the cavity is provided with an inner thread section, an oil inlet chamber is formed towards the rear section for combining the linkage unit and the sliding ring seat, the outer diameter of the chuck body is provided with a plurality of first oil guide holes and second oil guide holes corresponding to the first and second oil guide grooves of the ring seat, each first oil guide hole is communicated with the inner thread section of the inner diameter of the cavity and forms a plurality of first guide grooves, each second oil guide hole is communicated to the tail end of the chuck body to form a plurality of second guide grooves; the linkage unit comprises a linkage sleeve, a limiting ring and a piston ring, wherein a connecting disc is formed at the front end of the linkage sleeve, the connecting disc is locked and combined with the sliding ring seat, a combined part with a thread section is formed at the tail end of the linkage sleeve, the linkage sleeve is slidably sleeved with the limiting ring, an external thread section is arranged on the outer diameter of the limiting ring and is locked and fixed on the internal thread section of the cavity, a combined screw hole is arranged at the center of the piston ring and is matched and locked with the combined part of the linkage sleeve, and a plurality of O-shaped rings are sleeved on the outer diameter of the piston ring and slide along the inner wall of the oil inlet chamber; the rear cover is provided with an inner shaft part and an outer embedded part with the diameter of a circle larger than that of the inner shaft part, the inner shaft part is embedded into the linkage sleeve to form positioning, the outer embedded part is embedded into an oil inlet chamber port of the chuck body, so that the oil inlet chamber is limited between the limiting ring and the rear cover, and the inner side of the rear cover is provided with a plurality of Contraband-shaped guide flow channels for communicating the oil inlet chamber and a plurality of second guide grooves at the tail end of the chuck body.
Preferably, the outer diameter of the ring seat is provided with at least one oil injection hole for each of the two cambered grooves, and the oil injection holes are locked and fixed by an oil blocking screw respectively.
Preferably, the front end of the chuck body forms an outer step portion, the outer step portion is annularly provided with a concave arc groove facing the surface of the ring seat, and the concave arc groove is matched with the arc groove at one end of the ring seat to accommodate the balls.
Preferably, the surface of the rear cover is further provided with a clamping step part with a diameter larger than that of the external embedding part, the clamping step part is sleeved and fixed with a lubricating ring body, and the lubricating ring body is in sliding contact with a plurality of balls at the other end of the ring seat.
Preferably, a plurality of corresponding screw holes are arranged between the tail end of the chuck body and the rear cover and are screwed and combined by a plurality of bolts.
Preferably, the end surface of the connecting disc at the front end of the linking sleeve is provided with a plurality of positioning grooves corresponding to the inclined cone guide grooves of the sliding ring seat for limiting the clamping jaw sliding blocks.
The utility model discloses the efficiency of contrast prior art: (I), the utility model discloses a chuck body utilizes this interlock unit of oil pressure mode control to slide and actuate, and then this sliding ring seat of interlock reaches the centre gripping of each this clamping jaw slider, relax, and this chuck body during actual operation, the brake oil pressure of this first oilhole lasts the input, simultaneously with the discharge of brake oil between piston ring and back lid, make the piston ring can really reach clamping state toward the displacement of back lid direction, promote the clamping-force way of structure by a wide margin, and guarantee the centre gripping stability when chuck body operates, and can also be detained in first simultaneously through brake oil during operation, two oil conveying grooves and reach the effect of lubrication, the cooling, effectively reduce chuck body in-process have the worry of overheated deformation, more can support in high rotational speed's processing operation, and then promote machining efficiency and time limit of use.
When the chuck body is used for clamping and releasing a workpiece, the oil path between the chuck body and the ring seat is balanced by utilizing pressure relief backflow of one inlet and one outlet, the doubt that the pressure of one side is too large and the side is deformed is greatly reduced, and the service life of the structure is prolonged.
Drawings
Fig. 1 is a perspective view of the present invention;
fig. 2 is an exploded view of the present invention;
FIG. 3 is a partially exploded view of the chuck body and the linking unit of the present invention;
fig. 4 is a combined cross-sectional view of the present invention;
FIG. 5 is a schematic view of the releasing state and the injecting state of the brake oil when the clamping operation is desired;
FIG. 6 is a schematic view of the clamping state and the injecting state of the brake oil when the workpiece is to be released.
Symbolic illustration in the drawings:
10, a ring seat;
11 a ring protrusion;
111 caulking groove;
112 a first oil transfer groove;
113 a second oil transfer tank;
114 oil seal;
12 cambered surface grooves;
121 balls;
122 oil holes;
123 oil blocking screw;
13 a first oil hole;
14 a second oil hole;
20 a chuck body;
21 an outer step portion;
211 a concave arc groove;
212 a chute;
213 through the outlet;
22 a socket joint part;
221 a first oil guide hole;
222 a second oil guide hole;
223 a first guide groove;
224 a second guide slot;
23 chambers;
231 an internal thread section;
232 into an oil chamber;
24 sliding ring seats;
241 oblique cone guide grooves;
25 jaw sliders;
251 a guide block;
30 a linkage unit;
31 linking the sleeve;
311 a splice tray;
312 a positioning groove;
313 a combining part;
32 a stop collar;
321 an external threaded section;
33 a piston ring;
331 a combination screw hole;
40 a rear cover;
41 an inner shaft portion;
42 an external embedding part;
43 card step part;
431 lubricating the ring body;
44 a guide flow channel;
45 bolts.
Detailed Description
The purpose, characteristics and function of the present invention will be described in detail with reference to the accompanying drawings.
First, referring to fig. 1, 2 and 3, a front-mounted rotary chuck includes: a ring seat 10, a chuck body 20, a linkage unit 30 and a rear cover 40, wherein the center of the inner diameter of the ring seat 10 is provided with a ring protrusion 11, both sides of the ring protrusion 11 are provided with an arc groove 12, the end surface of the ring protrusion 11 is provided with at least three caulking grooves 111, a first oil delivery groove 112 and a second oil delivery groove 113 are arranged between the three caulking grooves 111, the caulking grooves 111 are provided with an oil seal 114, the outer diameter of the ring seat 10 is respectively provided with a first oil hole 13 and a second oil hole 14 corresponding to the first and second oil delivery grooves 112, 113, the two arc grooves 12 are respectively assembled with a plurality of balls 121 in a sliding manner, the outer diameter of the ring seat 10 is respectively provided with at least one oil injection hole 122 corresponding to the two arc grooves 12 and is respectively locked and fixed by an oil blocking screw 123, the ring seat 10 is assembled into the chuck body 20 from one end, and the rear cover 40 is assembled to be matched with the chuck body 20 at the other end, the chuck body 20 and the rear cover 40 are in sliding contact with the balls 121 of the two cambered grooves 12; the front section of the chuck body 20 forms an outer step portion 21, the rear section forms a engaging portion 22, the outer step portion 21 is annularly provided with a concave arc groove 211 facing the surface of the ring seat 10, and is matched with the arc groove 12 at one end of the ring seat 10 to accommodate the balls 121, the axial center of the chuck body 20 is provided with a cavity 23 in a penetrating manner, the front section of the cavity 23 is provided with a sliding ring seat 24, the periphery of the sliding ring seat 24 is provided with a plurality of tapered guide slots 241, the outer step portion 21 at the front end of the chuck body 20 is provided with a plurality of sliding slots 212 from outside to inside corresponding to the tapered guide slots 241 of the sliding ring seat 24, and is further provided with a plurality of penetrating ports 213 corresponding to the sliding slots 212 on the end surface of the outer step portion 21, each sliding slot 212 is slidably provided with a clamping jaw slider 25, and the inner side of each clamping jaw slider 25 is provided with a guide block 251 and each tapered guide slot 241, and the cavity 23 is provided with an inner thread section 231, an oil inlet chamber 232 is formed at the rear section for installing the linkage unit 30 to be combined and linked with the sliding ring seat 24, a plurality of first oil guide holes 221 and second oil guide holes 222 are formed at the outer diameter of the sleeve joint part 22 of the chuck body 20 corresponding to the positions of the first and second oil transmission grooves 112 and 113 of the ring seat 10, each first oil guide hole 221 is communicated with an inner thread section 231 of the inner diameter of the cavity 23 and the oil inlet chamber 232 to form a plurality of first guide grooves 223, and each second oil guide hole 222 is communicated with the tail end of the sleeve joint part 22 of the chuck body 20 to form a plurality of second guide grooves 224; the linkage unit 30 includes a linkage sleeve 31, a spacing ring 32 and a piston ring 33, the front end of the linkage sleeve 31 forms a connection disc 311, and the connection disc 311 is locked and combined with the sliding ring seat 24, and the end surface of the connection disc 311 is provided with a plurality of positioning grooves 312 corresponding to each inclined cone guide slot 241 of the sliding ring seat 24 for blocking and limiting each clamping jaw sliding block 25, the tail end of the linkage sleeve 31 forms a combined part 313 with a thread section, the spacing ring 32 is slidably sleeved with the linkage sleeve 31, the outer diameter of the spacing ring 32 is provided with an outer thread section 321 and is locked and fixed on the inner thread section 231 of the cavity 23, the center of the piston ring 33 is provided with a combined screw hole 331 matched and fixed on the combined part 313 of the linkage sleeve 31, and the outer diameter of the piston ring 33 is sleeved with a plurality of O-rings and slides along the inner wall of the oil inlet chamber 232; the rear cover 40 has an inner shaft portion 41, an outer embedding portion 42 with a diameter larger than that of the inner shaft portion 41, and a step portion 43 with a diameter larger than that of the outer embedding portion 42, the inner shaft portion 41 is embedded into the linking sleeve 31 to form a positioning, the outer embedding portion 42 is embedded into the port of the oil inlet chamber 232 of the chuck body 20, the step portion 43 is sleeved with and fixed with a lubricating ring body 431, and the lubricating ring body 431 is in sliding contact with the balls 121 at the other end of the ring seat 10, so that the oil inlet chamber 232 is located between the limiting ring 32 and the rear cover 40, and a plurality of Contraband-shaped guide flow passages 44 are arranged inside the rear cover 40 to conduct the oil inlet chamber 232 and a plurality of second guide grooves 224 at the end of the chuck body 20.
Referring to fig. 1, 2, 3 and 4, the chuck body 20 is assembled into a jaw sliding block 25 by a plurality of sliding grooves 212, and the front ends of the jaw sliding blocks 25 protrude from the through holes 213, the chamber 23 of the chuck body 20 is assembled with the sliding ring seat 24 slidably, and the sliding ring seat 24 is engaged and linked with the guide blocks 251 of the jaw sliding blocks 25 by the inclined cone guide grooves 241 around the sliding ring seat 24, so as to guide the opening and closing operations of the jaw sliding blocks 25 to control the clamping operation or release the clamping operation by the sliding operation of the sliding ring seat 24 in the chamber 23, the connecting disc 311 at the front end of the connecting sleeve 31 of the connecting unit 30 is locked and fixed with the sliding ring seat 24 by bolts, the limiting ring 32 is sleeved outside the connecting sleeve 31, and is locked on the internal thread section 231 of the chamber 23 by the external thread section 321 at the periphery to serve as a displacement path for limiting the sliding ring seat 24, the piston ring 33 is locked in the combination portion 313 of the linking sleeve 31 by the combination screw hole 331, and further the piston ring 33 is limited in the oil inlet chamber 232, the ring seat 10 sequentially embeds a plurality of oil seals 114 in the embedding grooves 111, the ring seat 10 is sleeved in the sleeving portion 22 of the chuck body 20, and one end of the ring seat 10 faces the outer step portion 21 of the chuck body 20, a plurality of balls 121 are arranged between the arc groove 12 and the concave arc groove 211, so that the ring seat 10 and the chuck body 20 achieve sliding contact through the balls 121, and simultaneously the first and second oil delivery grooves 112, 113 of the annular protrusion 11 are respectively communicated with the first and second oil guide holes 221, 222 of the sleeving portion 22, finally the oil chamber rear cover 40 is installed at the other side of the ring seat 10, and the inner shaft portion 41 and the outer embedding portion 42 are respectively nested in the sleeve 31 and the end portion of the oil inlet 232, and the sliding range of the piston ring 33 is limited by the limit ring 32 and the rear cover 40, the step 43 of the rear cover 40 is further sleeved with a lubricating ring 431 in sliding contact with the balls 121 in the arc groove 12 at the other end of the ring seat 10, and a plurality of corresponding screw holes are formed between the end of the chuck body 20 and the rear cover 40 and are screwed and combined by a plurality of bolts 45, so that the rear cover 40 and the chuck body 20 form synchronous rotation, and by means of the above structure, a front rotary chuck is completed.
Referring to fig. 5 and 6 sequentially, the ring seat 10 is connected to a braking oil pipe at the outer diameter corresponding to the first and second oil holes 13, 14 of the first and second oil feed grooves 112, 113, respectively, before the chuck body 20 is used, the braking oil is filled into the oil inlet chamber 232 through the second oil hole 14, and the braking oil is interposed between the rear cover 40 and the piston ring 33, so that the piston ring 33 is pushed and abuts against the retainer ring 32, and the sliding ring seat 24 is linked to control the jaw sliding blocks 25 to form an outward-expanding state for placing a workpiece for clamping operation, thereby, when the chuck body 20 is to clamp the workpiece, the braking oil is pressurized and input through the braking oil pipe of the first oil hole 13, and flows into the chuck body 20 through the first oil feed groove 112 into the first oil guide hole 221 at the outer diameter of the sleeve part 22, and is injected into the oil inlet chamber 232 between the retainer ring 32 and the piston ring 33 along the first guide groove 223, the piston ring 33 is further pushed to slide and displace toward the rear cover 40, and at the same time, the sliding ring seat 24 is driven to slide and move along the cavity 23, so that the guide blocks 251 of the jaw sliders 25 slide and retract along the tapered guide grooves 241 due to the displacement of the sliding ring seat 24, thereby achieving the purpose that the jaw sliders 25 concentrate toward the center and clamp the workpiece, and the brake oil originally between the rear cover 40 and the piston ring 33 is extruded toward the rear cover 40 due to the movement of the piston ring 33, and is further guided into the second guide groove 224 of the chuck body 20 through the guide flow channel 44 of the rear cover 40, and finally is accommodated between the second oil guide hole 222 and the second oil delivery groove 113 of the ring seat 10, and the brake oil can form a pressure maintaining effect in the second oil delivery groove 113 through the non-pressurized oil supply state of the brake oil pipe of the second oil hole 14.
Furthermore, after the workpiece is clamped, the chuck body 20 can be controlled to rotate to achieve the cutting operation of the workpiece, wherein the ring seat 10 is limited and fixed, and the plurality of balls 121 in the arc grooves 12 on the two sides are in sliding contact with the chuck body 20 and the rear cover 40, so that the chuck body 20 has smooth and stable rotation operation, and the ring seat 10 is also kept with brake oil in the first and second oil transmission grooves 112, 113 of the ring protrusion 11, so as to provide the lubricating and oil cooling effects of the rotating state of the chuck body 20, so that the chuck body 20 can support the processing operation at high rotation speed, prevent the possibility of overheating deformation in the operation process of the chuck body 20, and improve the processing efficiency and the use time limit.
On the contrary, when the chuck body 20 intends to loosen the workpiece, as shown in fig. 6 and 5, the chuck body is pressurized and input with the braking oil through the braking oil pipe of the second oil hole 14, and flows into the second oil guide hole 222 of the chuck body at the outer diameter of the sleeve portion 22 through the second oil transmission groove 113, and enters the guide flow passage 44 of the rear cover 40 along the second guide groove 224, and finally fills the oil inlet chamber 232 of the cavity 23, so that the braking oil is filled from the rear cover 40 and pushes the piston ring 33 to slide and displace toward the retainer ring 32, and at the same time, the sliding ring seat 24 is driven to slide and move along the cavity 23, so that the guide block 251 of each jaw sliding block 25 expands and displaces along each inclined cone guide groove 241 due to the reset of the sliding ring seat 24, thereby achieving the purpose of loosening the workpiece by the jaw sliding block 25, and the braking oil originally between the piston ring 33 and the retainer ring 32 will be extruded toward the retainer ring 32 due to the movement of the piston ring 33, and then flows out through the first guide groove 223 and the first oil guide hole 221, and is accommodated between the first oil transmission grooves 112 of the ring seat 10, and the braking oil can form a pressure maintaining effect in the first oil transmission grooves 112 through the non-pressurized oil supplying state of the braking oil pipe of the first oil hole 13.
With the structure of the above embodiment, the following advantages can be obtained: the utility model discloses a chuck body 10 utilizes this interlock unit 30 of oil pressure mode control to slide and actuate, and then this slip ring seat 24 of interlock reaches the centre gripping of each this clamping jaw slider 25, relax, and when this chuck body 10 actually operates, the continuous input of this first oilhole 13's braking oil pressure, simultaneously with the discharge of the braking oil between piston ring 33 and back lid 40, make piston ring 33 can really reach the clamping state toward the displacement of back lid 40 direction, promote the clamping-force way of structure by a wide margin, and guarantee the centre gripping stability when chuck body 20 operates, and can also be detained in first, two oil delivery grooves 112, 113 through the braking oil simultaneously during operation and reach the effect of lubrication, the cooling, effectively reduce chuck body 20 and have the worry of overheat deformation in the operation, more can support the processing operation in high rotational speed, and then promote machining efficiency and service life.
Secondly, when the chuck body 20 is used for clamping and loosening a workpiece, the oil path between the chuck body 20 and the ring seat 10 is balanced by utilizing the pressure relief backflow of one inlet and one outlet, the doubt that the single side is too high in pressure and deformed is greatly reduced, and the service life of the structure is prolonged.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited by the above description; all the equivalent changes and modifications made according to the claims of the present invention should still fall within the scope covered by the present invention.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169361.3U CN210632955U (en) | 2019-07-24 | 2019-07-24 | Front Rotary Chuck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921169361.3U CN210632955U (en) | 2019-07-24 | 2019-07-24 | Front Rotary Chuck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210632955U true CN210632955U (en) | 2020-05-29 |
Family
ID=70790990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921169361.3U Expired - Fee Related CN210632955U (en) | 2019-07-24 | 2019-07-24 | Front Rotary Chuck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210632955U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2019244664A1 (en) * | 2018-06-19 | 2021-06-24 | 株式会社北川鉄工所 | Chuck with pull-in function |
-
2019
- 2019-07-24 CN CN201921169361.3U patent/CN210632955U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPWO2019244664A1 (en) * | 2018-06-19 | 2021-06-24 | 株式会社北川鉄工所 | Chuck with pull-in function |
| JP7288441B2 (en) | 2018-06-19 | 2023-06-07 | 株式会社北川鉄工所 | Chuck with pull-in function |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200529 |