An automated feeding system, a sealing element for docking with a numerically controlled lathe, and its application

Abstract

The present invention relates to the field of seals, especially an automated feeding system, a seal for docking with a numerical control lathe, and its application. Before clamping the semi-finished product of the present invention, the inner support fixture is pre-driven into the inner circle at one end of the semi-finished product. There are two advantages in doing so: one is that the deformation of the semi-finished product in the free state can be corrected; the other is that there is something to support the inner circle of the semi-finished product, so that the semi-finished product will not collapse inward when the outside is clamped; the plane of the outer fixture is machined by the machine tool and is basically completely perpendicular to the axis. The two ends of the inner support fixture are basically completely parallel. The two ends of the semi-finished product are machined flat, and the inner support fixture has a correction effect on it; when the tightening device clamps the semi-finished product in the tightened state, the plane of the semi-finished product is in close contact with the inner support fixture, and the inner support fixture is in close contact with the outer fixture. At this time, the inner end face of the semi-finished product is basically perpendicular to the axis. Coupled with the fact that the two ends of the semi-finished product are machined flat, the purpose of correction can be achieved.

Description

Technical Field

[0001] The present invention relates to the field of seals, and particularly to an automated feeding system and a seal for docking with a numerically controlled lathe and its application. Background Art

[0002] At present, there are problems of difficult clamping, difficult alignment, and difficult docking in the docking of an automated feeding system and a numerically controlled lathe in the seal industry. The specific problems to be solved are as follows:

[0003] 1. Difficult clamping: Polytetrafluoroethylene is a commonly used seal material. This material is not very hard and is relatively easy to deform when subjected to external forces. Since this material is relatively expensive, the semi-finished products used for producing finished products are generally made into pipe materials during production, and the machining allowances for both the inside and outside are generally not left much. If the wall thickness of the required seal finished product is not too thick, its semi-finished product will be made very thin. In the seal industry, for sealing rings, there are generally requirements for concentricity. We generally use the method of turning all the inner and outer circles at various places in one clamping. Considering the efficiency requirements in production, when clamping the semi-finished product on the lathe, generally only a very short part of the material head can be clamped (generally 6 - 8 mm). These three situations of soft, thin, and short lead to easy deformation and difficult stable clamping of the semi-finished product on the chuck.

[0004] 2. Difficult alignment: Before the automated feeding system is used, manual feeding must be corrected before processing. Since the machining allowance of the semi-finished product is generally not left much, it must be corrected relatively accurately during alignment. The semi-finished product of polytetrafluoroethylene pipe material is made by pressing and sintering powder. Affected by the performance of polytetrafluoroethylene itself, the semi-finished product may have uneven end faces at both ends or a small non-perpendicularity with the outer circle, as well as non-round or irregular inner and outer circles. And such uneven, non-perpendicular, non-round, and irregular semi-finished products further increase the difficulty of alignment. Before the automated feeding system is used, manual alignment should be a normal operation, but after the automated feeding system is adopted, it is completely impossible to manually correct anymore.

[0005] 3. Difficult docking: When automation replaces manual labor, many original manual operation parts need to be abandoned. Then, after the feeding system feeds the material, the machine tool should be able to automatically clamp, be able to automatically align after the feeding claw moves away, and then be able to automatically start up. In addition, after a semi-finished product is processed, the final material head should be able to be taken away, and then the next material should be loaded. This requires the perfect connection between the feeding system and the machine tool. Summary of the Invention

[0006] To solve the above problems, the present invention provides a seal for docking an automated feeding system and a numerically controlled lathe.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: an automated loading system is connected to a CNC lathe to dock the seal, including an outer clamp and an inner support clamp, a protruding step is provided on the right side of the inner support clamp, the outer diameter of the protruding step is interference fit with the inner diameter of the corresponding semi-finished product, a groove is provided on the right side of the outer clamp, and a claw is provided on the side of the groove, the claw is clamped with the outer diameter of the corresponding semi-finished product, the left end of the inner support clamp is located in the groove of the outer clamp, and the groove diameter matches the outer diameter of the left side of the inner support clamp.

[0008] Furthermore, the centers 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.

[0009] Furthermore, the outer clamp is also provided with a mounting hole corresponding to the automatic chuck.

[0010] There are three mounting holes, which are evenly spaced apart on the outer fixture.

[0011] 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.

[0012] Also provided is an application of the above-mentioned automatic feeding system and a seal for docking with a CNC lathe, and the application method is as follows:

[0013] S1, pre-machine the plane at both ends of the semi-finished product to ensure the perpendicularity of the plane after machining to the inner and outer circles;

[0014] S2, pre-drive the inner support fixture into the inner circle of one end of the semi-finished product, and install the outer fixture on the chuck;

[0015] S3, install a clamping device on the lathe, start the automatic loading system to clamp, and use the clamping device to hold the other end of the semi-finished product;

[0016] S4, loosen the outer clamp claws so that the end surface of the semi-finished product provided with the inner support clamp is flush with the outer clamp groove;

[0017] S5, the clamping claws clamp the semi-finished product in a tightened 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 fixture, and the inner end face of the semi-finished product is perpendicular to the axis.

[0018] Among them, the tightening 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 to the connecting seat, the top plate is connected to the driving shaft of the cylinder, and a groove for tightening the semi-finished product is provided in the center of the top plate.

[0019] The axis center lines of the cylinder drive shaft and the top plate slot are on the same horizontal line as the axis center line of the semi-finished product.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. Before clamping the semi-finished product, the internal support fixture is pre-inserted into the inner circle at one end of the semi-finished product. This has two advantages: one is that it can correct the deformation of the semi-finished product in the free state; the other is that there is something to support the inner circle of the semi-finished product, so that the semi-finished product will not collapse inward when clamping the outside;

[0022] 2. The external fixture is customized for each specification of the semi-finished product. The diameter of its groove is just matched to the outer diameter of the semi-finished product with the internal support fixture installed and is a complete circle. The mounting holes are evenly divided into three positions and installed on the automatic chuck. After clamping the material with this external fixture, it can achieve the effects of uniform stability and good strength;

[0023] 3. The plane of the external fixture is machined by the machine tool and is basically completely perpendicular to the axis line. The two ends of the internal support fixture are basically completely parallel. The two ends of the semi-finished product are machined flat, and the internal support fixture has a correction effect on it;

[0024] 4. When the tightening device clamps the semi-finished product in the tightened state, the plane of the semi-finished product is close to the internal support fixture, and the internal support fixture is close to the external fixture. At this time, the inner end face of the semi-finished product is basically perpendicular to the axis line. Coupled with the fact that the two ends of the semi-finished product are machined flat, the purpose of correction can be achieved. Description of the Drawings[[ID=1,5]]

[0025] Figure 1 is the structural explosion diagram of this embodiment.

[0026] Figure 2 is the assembly schematic diagram of this embodiment.

[0027] Figure 3 is the structural schematic diagram of the external fixture of this embodiment.

[0028] Figure 4 is the structural schematic diagram of the jacking device of this embodiment.

[0029] Explanation of the reference numerals in the drawings: 1. External fixture; 11. Groove; 12. Claw; 13. External support hole; 14. Mounting hole; 2. Internal support fixture; 21. Convex step; 22. Internal support hole; 3. Semi-finished product; 4. Tightening device; 41. Connecting seat; 42. Cylinder; 421. Driving shaft; 43. Top plate; 431. Slot. Detailed Embodiment

[0030] The present invention will be further described in detail below in conjunction with the drawings through specific embodiments. The present application can be implemented in many different forms and is not limited to the embodiments described herein. The purpose of providing the following specific embodiments is to facilitate a clearer and more thorough understanding of the disclosed content of the present application. The words indicating directions such as up, down, left, and right are only for the positions of the shown structures in the corresponding drawings.

[0031] See also Figures 1-3 As shown, the present invention relates to an automatic feeding system and a sealing member for docking with a CNC lathe, comprising an outer clamp 1 and an inner support clamp 2, wherein a protruding step 21 is provided on the right side of the inner support clamp 2, and the outer diameter of the protruding step 21 is interference fit with the inner diameter of the corresponding semi-finished product, a groove 11 is provided on the right side of the outer clamp 1, and a claw 12 is provided on the side of the groove 11, and the claw 12 is clamped with the outer diameter of the corresponding semi-finished product 3, and 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.

[0032] In this embodiment, the centers 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 that of the inner support hole 22. The outer clamp 1 is also provided with a mounting hole 14 corresponding to the automatic chuck. The outer clamp 1 can wrap around the entire outer circle of the semi-finished product 3 and can be mounted on the clamping claw 12 so that the clamping claw 12 can be loosened and clamped. In addition, there are three mounting holes 14, which are evenly spaced on the outer clamp 1. The outer clamp 1 is tailored to each specification of the semi-finished product 3. The diameter of the inner groove 11 of the clamping claw 12 is just matched to the outer diameter of the semi-finished product 3 with the inner support clamp 2 installed and is a full circle. It can be evenly divided into three parts to set the mounting holes 14 and installed on the automatic chuck. This type of outer clamp 1 can achieve uniform stability and good strength after clamping the material.

[0033] This embodiment solves the problem of difficult clamping by using an inner support fixture 2 to support the inside of the semi-finished product 3 and wrapping the outside with an outer fixture 1; wherein, the interference between the outer diameter of the protruding step 21 of the inner support fixture 2 and the inner diameter of the semi-finished product 3 is 0.1-0.3mm.

[0034] In this embodiment, the application method of the automatic feeding system and the sealing member connected to the CNC lathe is as follows:

[0035] S1, pre-machine the two ends of the semi-finished product 3 to ensure that the plane after machining has good verticality with the inner and outer circles;

[0036] S2, pre-drive the inner support fixture 2 into the inner circle of one end of the semi-finished product 3, and install the outer fixture 1 on the chuck;

[0037] S3, install a clamping device 4 on the lathe, start the automatic loading system to clamp, and use the clamping device 4 to hold the other end of the semi-finished product 3;

[0038] S4, loosen the claw 12 of the outer clamp 1 so that the end surface of the semi-finished product 3 provided with the inner support clamp 2 is flush with the groove 11 of the outer clamp 1;

[0039] S5 causes the jaws 12 to clamp the semi-finished product 3 in the tightened state. At this time, the plane of the semi-finished product 3 is in close contact with the internal support fixture 2, and the internal support fixture 2 is in close contact with the external fixture 1. The inner end face of the semi-finished product 3 is perpendicular to the axis line.

[0040] In this embodiment, please refer to Figure 4 As shown, the tightening device 4 includes a connecting seat 41, a cylinder 42, and a top plate 43. The connecting seat 41 is installed on the lathe. One end of the cylinder 42 is fixed to the connecting seat 41. The top plate 43 is connected to the driving shaft 421 of the cylinder 42. A slot 431 for tightening the semi-finished product 3 is provided at the center of the top plate 43.

[0041] Among them, before clamping the semi-finished product 3, the internal support fixture 2 is pre-inserted into the inner circle at one end of the semi-finished product 3. There are two advantages to doing this: one is to correct the deformation of the semi-finished product 3 in the free state; the other is that there is something to support the inner circle of the semi-finished product 3, so that the semi-finished product 3 will not collapse inward when clamping the outside.

[0042] In this embodiment, the method of turning the planes at both ends of the semi-finished product 3, loosening the jaws 12 to top the plane and then clamping again after clamping is adopted to solve the problem of difficult correction. The plane of the external fixture 1 is turned out by the machine tool and is basically completely perpendicular to the axis line. The two ends of the internal support fixture 2 are basically completely parallel. The two ends of the semi-finished product 3 are turned flat, and the internal support fixture 2 has a correction effect on it. When the tightening device 4 clamps the semi-finished product 3 in the tightened state, the plane of the semi-finished product 3 is in close contact with the internal support fixture 2, and the internal support fixture 2 is in close contact with the external fixture 1. At this time, the inner end face of the semi-finished product 3 is basically perpendicular to the axis line. Coupled with the fact that the two ends of the semi-finished product 3 are turned flat, the purpose of correction can be achieved.

[0043] It should be further noted that this embodiment uses a macro program to solve the problem of difficult docking. For example: numerical control program

[0044] G65 H01 P#503 Q6.0

[0045] G65 H02 P#504 Q#503 R0.8 (the length required for single-piece processing, shown as 6.8 in the case)

[0046] G65 H01 P#505 Q10 (number of cycles)

[0047] G65 H01 P#506 Q30

[0048] G65 H04 P#508 Q#504 R#505 (total length of processing the whole semi-finished product 3, shown as 68 in the case)

[0049] Application of G50 in conjunction with the macro program

[0050] Starting material end face

[0051] T0100

[0052] G0 X#506 Z5

[0053] N10 G65 H03 P#505 Q#505 R1

[0054] G50 X#506 Z5(Workpiece origin coordinates) . . .

[0058] T0100

[0059] G0X#506

[0060] Z5

[0061] G0 W-#504

[0062] G65 H83 P1 Q#505R0

[0063] G0 W#508(Return to the starting point of the workpiece, end face)

[0064] G50 X#506 Z5(Reset the workpiece origin and re - establish)

[0065] G0 W40

[0066] G28 U0 W0(Return to the zero point of the machine tool coordinates)

[0067] M31 communicates with the manipulator to execute the manipulator. After the manipulator completes the feeding, the machine tool is started to achieve a non - stop cyclic mode

[0068] M30

[0069] It should be further noted that the automated loading system of the present invention adopts a control system that is relatively common in the art and uses a preset program to achieve control. Unless otherwise clearly specified and limited, terms such as "connection", "fixation", "installation" should be understood in a broad sense. For those of ordinary skill in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances

[0070] The above - mentioned embodiments are only descriptions of the preferred embodiments of the present invention and do not limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations and improvements made by ordinary engineering and technical personnel in the art to the technical solutions of the present invention should fall within the protection scope determined by the claims of the present invention

Claims

1. An automated feeding system and a sealing member for docking with a numerically controlled lathe, characterized in that: It includes an outer fixture and an inner support fixture. A convex step is provided on the right side of the inner support fixture, and the outer diameter of the convex step is in interference fit with the inner diameter of the corresponding semi-finished product. A groove is provided on the right side of the outer fixture, and a claw is provided on the side of the groove. The claw is clamped with the outer diameter of the corresponding semi-finished product. The left end of the inner support fixture is located in the groove of the outer fixture, and the diameter of the groove matches the outer diameter of the left side of the inner support fixture; An outer support hole and an inner support hole coaxial with the semi-finished product are respectively provided in the centers of the outer fixture and the inner support fixture, and the diameter of the outer support hole is larger than that of the inner support hole; The outer fixture is also provided with a mounting hole corresponding to the automatic chuck.

2. The docking seal for an automated loading system and a CNC lathe according to claim 1, characterized in that: There are 3 mounting holes, and they are evenly spaced on the outer fixture.

3. An automated feeding system and a docking seal for a numerically controlled lathe according to claim 1, characterized in that: The interference amount between the outer diameter of the convex step and the inner diameter of the semi-finished product is 0.0 - 0.3 mm.

4. Application of the automated loading system of claim 1 in butt-joint seals of CNC lathes, characterized in that: Its application method is as follows: S1. Pre-turn the planes at both ends of the semi-finished product to ensure the perpendicularity of the turned plane to the inner and outer circles; S2. Pre-drive the inner support fixture into the inner circle at one end of the semi-finished product, and install the outer fixture on the chuck; S3. Install a tightening device on the lathe. After starting the automatic loading system for clamping, use the tightening device to press against the other end of the semi-finished product; S4. Loosen the claws of the outer fixture so that the plane at the end of the semi-finished product with the inner support fixture is flush with the groove of the outer fixture; S5. Make the claws clamp the semi-finished product in the tightened state. At this time, the plane of the semi-finished product is in close contact with the inner support fixture, and the inner support fixture is in close contact with the outer fixture. The inner end face of the semi-finished product is perpendicular to the axis.

5. The application of an automated loading system and a numerical control lathe docking seal according to claim 4, characterized in that: The tightening 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 to the connecting seat. The top plate is connected to the driving shaft of the cylinder. A slot for pressing against the semi-finished product is provided in the center of the top plate.

6. The application of an automated loading system and a sealing member for docking with a numerically controlled lathe according to claim 5, characterized in that: The axis of the driving shaft of the cylinder and the axis of the slot of the top plate are on the same horizontal line as the axis of the semi-finished product.

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