CN111842941A - Butt joint sealing piece for automatic feeding system and numerically controlled lathe and application of butt joint sealing piece - Google Patents

Abstract

The present invention relates to the field of seals, and in particular to a seal for docking an automatic feeding system with a numerically controlled lathe and its application. Before the semi-finished product of the present invention is clamped, the inner support clamp is pre-punched into the inner circle of one end of the semi-finished product. This has two advantages: one is that the deformation of the semi-finished product in a free state can be corrected; the other is that the inner circle of the semi-finished product is supported by something, and the semi-finished product will not collapse inward when clamped from the outside; the plane of the outer clamp is turned out by the machine tool, and is basically completely perpendicular to the axis centerline, and the two ends of the inner support clamp are basically completely parallel, and the two ends of the semi-finished product are turned flat, and the inner support clamp has a correction effect on it; when the tightening device clamps the semi-finished product in the tightening state, the plane of the semi-finished product is close to the inner support clamp, and the inner support clamp is close to the outer clamp. At this time, the inner end face of the semi-finished product is basically perpendicular to the axis centerline, and the two ends of the semi-finished product are turned flat, so the purpose of correction can be achieved.

Description

An automatic feeding system and a CNC lathe docking seal and its application

technical field

The invention relates to the field of seals, in particular to an automatic feeding system and a numerical control lathe butt joint seal and its application.

Background technique

At present, the connection between the automatic feeding system and the CNC lathe in the seal industry has the problems of difficulty in clamping, adjustment and connection. The specific issues to be resolved are as follows:

1. Difficulty in clamping: PTFE is a commonly used material for seals, which is not very hard and is easy to deform when encountering external forces. Due to the high price of this material, the semi-finished products used to produce finished products are generally made of tubes, and the internal and external machining allowances are generally not much. If the wall thickness of the required seal products is not too thick, its The semi-finished product will be made very thin. In the seal industry, there are generally requirements for concentricity of the seal ring. We generally use the method of turning all the inner and outer circles in one clamping. Combined with the efficiency requirements in production, we pack the semi-finished products. When the clamp is a lathe, it is generally only allowed to clamp a very short point (usually 6-8mm) of the material head. The three status quo of soft, thin and short make the semi-finished product easy to deform and difficult to clamp when clamping on the chuck.

2. Difficult to calibrate: When the automatic feeding system is not used, it must be calibrated after manual clamping before processing. Since the machining allowance of semi-finished products is generally not much left, it must be calibrated more accurately when calibrating. The semi-finished PTFE pipe material is made of powder by pressing and sintering process. Affected by the performance of PTFE, the semi-finished product may have uneven end faces or a small amount of non-perpendicular to the outer circle, and the inner and outer circles themselves are not round or irregular. The phenomenon. And this kind of uneven, non-vertical, non-circular and irregular semi-finished products further increase the difficulty of calibration. When the automatic feeding system is not used, manual correction should be regarded as a normal action, but after using the automatic feeding system, it is completely impossible to manually correct it.

3. Difficulty in docking: If automation is used instead of manual labor, many of the original manual operation parts must be abandoned. Then, after the material is loaded on the feeding system, the machine tool should be able to be automatically clamped, the feeding claw should be able to be automatically corrected after the feeding claw is removed, and then it should be able to automatically start up. In addition, after a semi-finished product is processed, it must be able to be removed. The last material head, and then the next material, so the feeding system and the machine tool need to be perfectly connected.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides a sealing member for docking between a dynamic feeding system and a numerical control lathe.

In order to achieve the above purpose, the technical solution adopted in the present invention is: an automatic feeding system and a CNC lathe butt joint seal, including an outer clamp and an inner support clamp, the right side of the inner support clamp is provided with a protruding step, the convex The outer diameter of the step is in an interference fit with the inner diameter of the corresponding semi-finished product, the right side of the outer fixture is provided with a groove, and the side of the groove is provided with a claw, the claw is clamped with the corresponding outer diameter of the semi-finished product, the The left end of the inner support clamp is located in the groove of the outer clamp, and the diameter of the groove matches the outer diameter of the left side of the inner support clamp.

Further, the center of the outer clamp and the inner support clamp are respectively provided with an outer support hole and an inner support hole coaxial with the semi-finished product, and the diameter of the outer support hole is larger than that of the inner support hole.

Further, the outer clamp is also provided with mounting holes corresponding to the automatic chuck.

Wherein, there are three installation holes, and they are evenly spaced on the outer clamp.

Wherein, the interference between the outer diameter of the protruding step and the inner diameter of the semi-finished product is 0.0-0.3 mm.

It also provides an application of the above-mentioned automatic feeding system and the numerical control lathe butt joint seal, and the application method is as follows:

S1, pre-car plane at both ends of the semi-finished product to ensure the verticality of the plane behind the car and the inner and outer circles;

S2, drive the inner support fixture into the inner circle of one end of the semi-finished product in advance, and install the outer fixture on the chuck;

S3, install a jacking device on the lathe, after starting the automatic feeding system for clamping, use the jacking device to hold the other end of the semi-finished product;

S4, loosen the jaws of the outer clamp, so that the end plane of the semi-finished product with the inner support clamp is flat with the top of the groove of the outer clamp;

S5, make the jaws clamp the semi-finished product in the top-tight state. At this time, the semi-finished product plane is close to the inner support fixture, and the inner support fixture is close to the outer clamp, and the inner end face of the semi-finished product is perpendicular to the axis line.

Wherein, the jacking device includes a connecting seat, a cylinder and a top plate, the connecting seat is installed on the lathe, one end of the cylinder is fixed with the connecting seat, the top plate is connected with the driving shaft of the cylinder, and the center of the top plate is provided with a Tighten the slot of the semi-finished product.

Wherein, the axis lines of the cylinder drive shaft and the top plate slot are on the same horizontal line as the axis line of the semi-finished product.

The beneficial effects of the present invention are:

1. Before clamping the semi-finished product, insert the inner support fixture into the inner circle at one end of the semi-finished product. This has two advantages: one is to correct the deformation of the semi-finished product in a free state; When clamped outside, the semi-finished product will not collapse inside;

2. The outer fixture is tailored for each specification of semi-finished product, and the groove diameter is just matched to the outer diameter of the semi-finished product with the inner support fixture installed and is a full circle. The installation holes are equally divided into three positions and installed on the automatic chuck , This kind of external fixture can achieve uniform and stable effect with better strength after clamping the material;

3. The plane of the outer fixture is turned out with the machine tool, which is basically perpendicular to the axis line, the two ends of the inner support fixture are basically completely parallel, the two ends of the semi-finished product are flat, and the inner support fixture has a correcting effect on it;

4. When the clamping device clamps the semi-finished product in the top-tight state, the semi-finished product plane is close to the inner support fixture, and the inner support fixture is close to the outer clamp. At this time, the inner end face of the semi-finished product is basically perpendicular to the axis line, plus the semi-finished product. Both ends are flat, and the purpose of calibration can be achieved.

Description of drawings

FIG. 1 is an exploded view of the structure of this embodiment.

FIG. 2 is an assembly schematic diagram of this embodiment.

FIG. 3 is a schematic view of the structure of the jig except in this embodiment.

FIG. 4 is a schematic structural diagram of the jacking device in this embodiment.

Description of reference numerals: 1. Outer clamp; 11. Groove; 12. Claw; 13. Outer support hole; 14. Mounting hole; 2. Inner support clamp; 21. Protruding step; 22. Inner support hole; 3 .Semi-finished product; 4. Clamping device; 41. Connecting seat; 42. Cylinder; 421. Drive shaft; 43. Top plate; 431. Slot.

Detailed ways

The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. The present application can be implemented in many different forms, and is not limited to the implementation described in this embodiment. The following specific embodiments are provided for the purpose of facilitating a clearer and more thorough understanding of the disclosure of the present application, wherein words indicating orientation, such as up, down, left and right, are only for the positions of the illustrated structures in the corresponding drawings.

1-3, the present invention relates to an automatic feeding system and a CNC lathe docking seal, including an outer clamp 1 and an inner support clamp 2, the inner support clamp 2 is provided with a protruding step 21 on the right side, The outer diameter of the protruding step 21 is in an interference fit with the inner diameter of the corresponding semi-finished product. The right side of the outer fixture 1 is provided with a groove 11, and the side of the groove 11 is provided with a claw 12. The outer diameter of the semi-finished product 3 is clamped, the left end of the inner support clamp 2 is located in the groove 11 of the outer clamp 1, and the diameter of the groove 11 matches the outer diameter of the left side of the inner support clamp 2.

In this embodiment, the center of the outer clamp 1 and the inner support clamp 2 are respectively provided with an outer support hole 13 and an inner support hole 22 coaxial with the semi-finished product 3 . The diameter of the outer support hole 13 is larger than the inner support hole 22 , The outer clamp 1 is also provided with a mounting hole 14 corresponding to the automatic chuck; wherein, the outer clamp 1 can wrap the outer circle of the entire semi-finished product 3 and can be mounted on the jaw 12 with the jaw 12 being loosened and clamped. In addition, three mounting holes 14 are provided on the outer fixture 1 at even intervals. The outer fixture 1 is tailored for each specification of the semi-finished product 3, and the diameter of the groove 11 in the claw 12 is just matched to the installation. The outer diameter of the semi-finished product 3 of the inner support fixture 2 is a full circle, which can be evenly divided into three parts. The mounting holes 14 are arranged and installed on the automatic chuck. strength effect.

In this embodiment, the inner support fixture 2 is used to support the semi-finished product 3 inside, and the outside is wrapped with an outer fixture 1 to solve the problem of difficult clamping; wherein, the outer diameter of the protruding step 21 of the inner support fixture 2 is the same as the semi-finished product 3 inner diameter. The interference is 0.1-0.3mm.

The present embodiment adopts the application method of the above-mentioned automatic feeding system and the numerical control lathe butt joint seal as follows:

S1, pre-car planes at both ends of the semi-finished product 3 to ensure that the plane behind the car has a good verticality with the inner and outer circles;

S2, drive the inner support fixture 2 into the inner circle of one end of the semi-finished product 3 in advance, and install the outer fixture 1 on the chuck;

S3, install a jacking device 4 on the lathe, after starting the automatic feeding system for clamping, use the jacking device 4 to hold the other end of the semi-finished product 3;

S4, loosen the jaws 12 of the outer fixture 1, so that the end plane of the semi-finished product 3 provided with the inner support fixture 2 is flush with the top of the groove 11 of the outer fixture 1;

S5, make the clamping jaw 12 clamp the semi-finished product 3 in a tight state. At this time, the semi-finished product 3 is flat against the inner support fixture 2, and the inner support fixture 2 is close to the outer fixture 1. The inner end face of the semi-finished product 3 is perpendicular to the axis line.

In this embodiment, please refer to FIG. 4 , the pressing device 4 includes a connecting seat 41 , a cylinder 42 and a top plate 43 , the connecting seat 41 is installed on the lathe, and one end of the cylinder 42 is fixed to the connecting seat 41 , the top plate 43 is connected with the drive shaft 421 of the cylinder 42 , and the center of the top plate 43 is provided with a slot 431 for pressing the semi-finished product 3 .

Among them, before the semi-finished product 3 is clamped, the inner support fixture 2 is pre-inserted into the inner circle of one end of the semi-finished product 3, which has two advantages: one is to correct the deformation of the semi-finished product 3 in a free state; There is something to hold it up, and the semi-finished product 3 will not collapse inside when it is clamped outside.

The present embodiment adopts the method of turning the flat surfaces at both ends of the semi-finished product 3, and then loosening the top plane of the clamping jaw 12 after clamping and then clamping it to solve the problem of difficult calibration. The plane of the outer fixture 1 is turned out with the machine tool, which is basically perpendicular to the axis line, the two ends of the inner support fixture 2 are basically completely parallel, and the two ends of the semi-finished product 3 are turned flat, and the inner support fixture 2 is corrected for it. Function; when the clamping device 4 clamps the semi-finished product 3 in the top-tight state, the semi-finished product 3 is flat against the inner support fixture 2, and the inner support fixture 2 is close to the outer fixture 1. At this time, the inner end face of the semi-finished product 3 is basically perpendicular to the shaft. After the center line, and the two ends of the semi-finished product 3 are flat, the purpose of calibration can be achieved.

It should be further explained that, in this embodiment, macro programs are used to solve the problem of difficult docking, such as: numerical control programs

G65 H01 P#503 Q6.0

G65 H02 P#504 Q#503 R0.8 (The length required for single-piece processing, the example shown is 6.8)

G65 H01 P#505 Q10 (Number of cycles)

G65 H01 P#506 Q30

G65 H04 P#508 Q#504 R#505 (The total length of the whole semi-finished product 3 is processed, the case shows 68)

G50 with macro program application

end face of starting material

T0100

G0 X#506 Z5

N10 G65 H03P#505 Q#505 R1

G50 X#506 Z5 (Workpiece origin coordinates)

.

.

.

T0100

G0X#506

Z5

G0 W-#504

G65 H83 P1 Q#505R0

G0 W#508 (return to workpiece starting point, end face)

G50 X#506 Z5 (workpiece origin reset, re-establish)

G0 W40

G28 U0 W0 (return to machine coordinate zero point)

M31 communicates with the manipulator to execute the manipulator. After the manipulator completes feeding, the machine tool is started to achieve a non-stop cycle mode.

M30

It should be further noted that the automatic feeding system of the present invention adopts a control system that is more common in the field, and adopts a preset program to realize control. Unless otherwise specified and limited, the terms "connection", "fixing" and "installation" Such terms should be understood in a broad sense, and those of ordinary skill in the art can understand the specific meanings of the above terms in the present application according to specific circumstances.

The above embodiments are only to describe the preferred embodiments of the present invention, and do not limit the scope of the present invention. On the premise of not departing from the design spirit of the present invention, various modifications and variations of the technical solutions of the present invention made by ordinary engineers and technicians in the art Improvements should all fall within the protection scope determined by the claims of the present invention.

Claims (8)

1. An automatic feeding system and a CNC lathe docking seal, characterized in that: comprise an outer clamp and an inner support clamp, the right side of the inner support clamp is provided with a protruding step, and the outer diameter of the protruding step is corresponding to the The inner diameter of the semi-finished product is an interference fit, the right side of the outer clamp is provided with a groove, and the side of the groove is provided with a claw, the claw is clamped with the corresponding outer diameter of the semi-finished product, and the left end of the inner support clamp is located on the outer clamp. inside the groove, and the diameter of the groove matches the outer diameter of the left side of the inner support clamp. 2. An automatic feeding system and a CNC lathe docking seal according to claim 1, wherein the outer clamp and the center of the inner support clamp are respectively provided with an outer support hole and an inner support coaxial with the semi-finished product. The diameter of the outer support hole is larger than that of the inner support hole. 3 . The sealing member for docking between an automatic feeding system and a CNC lathe according to claim 1 , wherein the outer clamp is further provided with mounting holes corresponding to the automatic chuck. 4 . 4. The sealing member for docking between an automatic feeding system and a numerically controlled lathe according to claim 3, characterized in that: the mounting holes are provided with three, and are arranged on the outer fixture at even intervals. 5. An automatic feeding system and a CNC lathe docking seal according to claim 1, wherein the interference between the outer diameter of the protruding step and the inner diameter of the semi-finished product is 0.0-0.3 mm. 6. a kind of application of adopting the automatic feeding system of claim 1 and the numerical control lathe docking seal, it is characterized in that: its application method is as follows: S1, pre-car plane at both ends of the semi-finished product to ensure the verticality of the plane behind the car and the inner and outer circles; S2, drive the inner support fixture into the inner circle of one end of the semi-finished product in advance, and install the outer fixture on the chuck; S3, install a jacking device on the lathe, after starting the automatic feeding system for clamping, use the jacking device to hold the other end of the semi-finished product; S4, loosen the jaws of the outer clamp, so that the end plane of the semi-finished product with the inner support clamp is flat with the top of the groove of the outer clamp; S5, make the jaws clamp the semi-finished product in the top-tight state. At this time, the semi-finished product plane is close to the inner support fixture, and the inner support fixture is close to the outer clamp, and the inner end face of the semi-finished product is perpendicular to the axis line. 7. The application of an automatic feeding system and a CNC lathe docking seal according to claim 6, wherein the jacking device comprises a connecting seat, a cylinder and a top plate, and the connecting seat is installed on the lathe, One end of the cylinder is fixed with the connecting seat, the top plate is connected with the driving shaft of the cylinder, and the center of the top plate is provided with a slot for pressing the semi-finished product. 8 . The application of an automatic feeding system and a CNC lathe docking seal according to claim 7 , wherein the axis lines of the cylinder drive shaft and the top plate slot are on the same horizontal line as the semi-finished product axis line. 9 . superior.

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