A jig and process for improving machining accuracy

Abstract

The application discloses a jig for improving machining precision and a process, and relates to the technical field of jigs, which comprises a base and a pipe, a limiting seat is fixedly installed on the base, a disc is rotatably installed on the limiting seat, an extrusion ring is slidably installed on the disc along the axial direction of the disc, a sliding block is slidably installed on the disc along the radial direction of the disc, and a sliding plate is fixedly installed on the sliding block. When the punching is finished, the servo motor and the drill bit are driven away from the pipe by the electric push rod, the friction plate on the motor will be attached to the friction wheel, the friction plate will drive the friction wheel to rotate at this time, the rotation of the friction wheel will drive the driving disc to rotate, the driving disc will drive the disc to rotate at this time, the pipe on the disc will rotate to adjust the angle at this time, so that the next time the drill bit punches, the rotation of the pipe can be automatically adjusted according to the movement of the drill bit, and independent control is not needed.

Description

Technical Field

[0001] This invention relates to the field of jig technology, and specifically to a jig and process for improving machining accuracy. Background Technology

[0002] A jig is a broad category of tools used in woodworking, metalworking, fitter work, machinery, electrical control, and other handicrafts. It is mainly used as a tool to assist in controlling position or movement. When processing various graphite tubes, metal tubes, etc., it is usually necessary to drill holes on their surface. Using a jig can improve the drilling accuracy.

[0003] Existing fixtures typically use simple three-jaw chucks to hold the pipes. During drilling, the pipe is usually placed in the three-jaw chuck and held in place. Then, a worker or a machine drills the hole. The rotation of the pipe requires a motor or other drive mechanism to rotate the three-jaw chuck. After drilling, the three-jaw chuck needs to be released and the pipe removed. The drilling equipment also needs to be moved away before a new pipe is fed in. In this process, pipe replacement needs to be done manually, and the rotation of the three-jaw chuck needs to be manually or mechanically controlled. The drilling tool also needs to be controlled independently, resulting in many independently controlled steps in the drilling process. Summary of the Invention

[0004] The purpose of this invention is to provide a fixture and process for improving machining accuracy, so as to overcome the above-mentioned shortcomings in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a fixture for improving machining accuracy, comprising a base and a tube, wherein a limiting seat is fixedly installed on the base, a disc is rotatably installed on the limiting seat, an extrusion ring is slidably installed on the disc along its axial direction, a slider is slidably installed on the disc along its radial direction, a slide plate is fixedly installed on the slider, and a clamping bar is fixedly installed at one end of the slide plate near the center of the extrusion ring; an electric push rod is fixedly installed on the base, a servo motor is fixedly installed at the output end of the electric push rod, and a drill bit is fixedly installed at the output end of the servo motor; a friction plate is fixedly installed at the bottom end of the servo motor, a friction wheel is rotatably installed inside the base, and an active disc is fixedly installed at the end of the friction wheel away from the servo motor, the active disc being in contact with the disc;

[0006] When the drill bit drills holes around the pipe, the disk rotates with each retraction of the drill bit, causing the pipe to shift position to facilitate drilling at the next location.

[0007] As preferred, the disc is provided with a clamping slot, a T-shaped insertion rod is slidingly installed on the limiting seat, a chamfer is arranged at one end of the insertion rod close to the disc, and a spring is fixedly installed between the short arm end of the insertion rod and the limiting seat.

[0008] As preferred, the inner wall of the base is fixedly installed with a limiting frame, and the friction wheel is rotatably installed in the limiting frame.

[0009] As preferred, the inner wall of the base is vertically slidingly installed with a sliding frame, the bottom end of the sliding frame is fixedly installed with a connecting rod, a rotating shaft is rotatably installed in the base, a rotating frame is fixedly installed on the rotating shaft, a push rod is fixedly installed on the rotating frame, a convex plate is fixedly installed at the bottom end of the rotating frame, a connecting frame is fixedly installed at the end of the connecting rod away from the sliding frame, and a round rod is fixedly installed on the connecting frame.

[0010] As preferred, the sliding block is provided with a first inclined edge, and the extrusion ring is provided with a second inclined edge at one end close to the sliding block.

[0011] As preferred, the disc is provided with a sliding groove, and the sliding block is slidingly installed in the sliding groove, a first return spring is fixedly installed between the sliding block and the inner wall of the sliding groove.

[0012] A second return spring is fixedly installed between the extrusion ring and the disc.

[0013] As preferred, the inner part of the sliding plate is rotatably installed with a long strip and a rotating wheel, the long strip penetrates the clamp rod, and a baffle is fixedly installed at the end of the long strip away from the disc.

[0014] A belt is transmissionally installed between the rotating wheel and the long strip, and a long plate is fixedly installed on the disc.

[0015] As preferred, the bottom end of the base is obliquely arranged, and an extension rod is fixedly installed at the end of the sliding plate away from the clamp rod.

[0016] As preferred, a variable-diameter rod is fixedly installed on the clamp rod, and the variable-diameter rod is conical, and the large end of the variable-diameter rod is fixedly connected with the clamp rod.

[0017] A machining process of a jig for improving machining precision, further comprising the following steps:

[0018] S1, placing a plurality of pipe materials on the extension rod;

[0019] S2, starting the electric push rod and the servo motor, so that the electric push rod drives the servo motor to move up and down, and at the same time, the electric push rod drives the drill bit to move to perform the punching operation;

[0020] S3, the drill bit punches the pipe material, and after each time the drill bit exits, the disc drives the pipe material to rotate adaptively;

[0021] S4, after the hole is punched, the servo motor moves a deeper distance downward to release the clamping of the pipe by the clamping rods.

[0022] In the above technical solution, the jig and process for improving machining precision are provided, and have the following beneficial effects: when the pipe needs to be punched, the pipe is placed in the three clamping rods, at which time the clamping rods clamp the pipe, then when the pipe is punched, the electric push rod is started, at which time the electric push rod drives the servo motor and the drill bit to punch the pipe, until the punching is completed, at which time the servo motor and the drill bit are driven away from the pipe by the electric push rod, as the motor drops, the friction plate on the motor will be attached to the friction wheel, at which time the friction plate will drive the friction wheel to rotate, as the friction wheel rotates, the driving disc will be driven to rotate, at which time the driving disc will drive the disc to rotate, at which time the pipe on the disc will rotate to adjust the angle to facilitate the next punching of the drill bit, at which time the rotation of the pipe can be automatically adjusted according to the movement of the drill bit, without independent control. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below, and obviously, the drawings described below are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0024] Figure 1 The three-dimensional structure schematic diagram provided for the embodiments of the present application;

[0025] Figure 2 The rear side structure schematic diagram of the Figure 1 provided for the embodiments of the present application;

[0026] Figure 3 The part structure schematic diagram of the rotating frame provided for the embodiments of the present application;

[0027] Figure 4 The part structure schematic diagram of the disc provided for the embodiments of the present application;

[0028] Figure 5 The rear side structure schematic diagram of the Figure 4 provided for the embodiments of the present application;

[0029] Figure 6 The part structure schematic diagram of the Figure 5 provided for the embodiments of the present application;

[0030] Figure 7 The structure schematic diagram of A of the Figure 3 provided for the embodiments of the present application;

[0031] Figure 8The structure schematic diagram of B in the Figure 4 The structure schematic diagram of B in the

[0032] Figure 9 The structure schematic diagram of B in the

[0033] Figure 10 The structure schematic diagram of B in the

[0034] Explanation of reference signs:

[0035] 1, base; 2, pipe; 31, limiting seat; 32, disc; 321, clamping groove; 33, extrusion ring; 34, sliding block; 35, sliding plate; 36, clamping rod; 361, variable diameter rod; 37, extension rod; 41, servo motor; 42, drill bit; 43, electric push rod; 44, friction plate; 45, limiting frame; 46, friction wheel; 47, driving disc; 48, insertion rod; 51, sliding frame; 52, connecting rod; 53, connecting frame; 54, rotating shaft; 55, rotating frame; 56, push rod; 57, round rod; 58, convex plate; 61, long strip; 62, baffle; 63, belt; 64, rotating wheel; 65, long plate. DETAILED DESCRIPTION

[0036] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0037] Please refer to Figures 1-10 A jig and process for improving machining precision, comprising a base 1 and a pipe 2, the base 1 is fixedly installed with a limiting seat 31, the limiting seat 31 is rotatably installed with a disc 32, the disc 32 is slidably installed with an extrusion ring 33 along the axial direction thereof, the disc 32 is slidably installed with a sliding block 34 along the radial direction thereof, the sliding block 34 is fixedly installed with a sliding plate 35, and the sliding plate 35 is fixedly installed with a clamping rod 36 at one end close to the center of the extrusion ring 33; the base 1 is fixedly installed with an electric push rod 43, the output end of the electric push rod 43 is fixedly installed with a servo motor 41, and the output end of the servo motor 41 is fixedly installed with a drill bit 42; the bottom end of the servo motor 41 is fixedly installed with a friction plate 44, the inside of the base 1 is rotatably installed with a friction wheel 46, one end of the friction wheel 46 away from the servo motor 41 is fixedly installed with a driving disc 47, and the driving disc 47 is in close contact with the disc 32;

[0038] When the drill bit 42 punches holes on the circumferential surface of the pipe 2, the disc 32 is rotated with each retreat of the drill bit 42 to displace the pipe 2 to facilitate punching holes at the next position;

[0039] The pipe 2 is placed inside three clamping rods 36, which clamp the pipe 2. Then, when drilling, the electric push rod 43 is activated. The electric push rod 43 drives the servo motor 41 and the drill bit 42 to approach the pipe 2 for drilling until the drilling is completed. Then, the electric push rod 43 drives the servo motor 41 and the drill bit 42 away from the pipe 2. As the motor descends, the friction plate 44 on it will come into contact with the friction wheel 46. At this time, the friction plate 44 will drive the friction wheel 46 to rotate. As the friction wheel 46 rotates, it will drive the drive disc 47 to rotate. The drive disc 47 will then drive the disc 32 to rotate. The pipe 2 on the disc 32 will rotate accordingly to adjust its angle, so as to facilitate the next drilling by the drill bit 42.

[0040] In another embodiment of the present invention: a slot 321 is provided on the disc 32, and a T-shaped insert rod 48 is slidably installed on the limiting seat 31. The end of the insert rod 48 near the disc 32 is chamfered, and a spring is fixedly installed between the short arm end of the insert rod 48 and the limiting seat 31.

[0041] When the active disk 47 drives the disk 32 to rotate, refer to Figure 3 At this time, the disc 32 will rotate counterclockwise. When the disc 32 rotates counterclockwise, the corner of the slot 321 on the disc 32 will contact the chamfer of the insertion rod 48. At this time, the insertion rod 48 will move outward. At this time, the rotation of the disc 32 is unrestricted. As the disc 32 continues to rotate until it reaches a specified angle, the insertion rod 48 will be inserted into the slot 321 under the pull of the spring. Then, the electric push rod 43 pushes the servo motor 41 to rise. While the servo motor 41 rises and drives the friction plate 44 to rise, the friction plate 44 will drive the friction wheel 46 and the active disc 47 to rotate. However, since the insertion rod 48 is inserted into the slot 321 and the end face of the insertion rod 48 abuts against the slot 321, the insertion rod 48 will restrict the clockwise rotation of the disc 32. This ensures that the position of the pipe 2 stops more accurately after rotation, thereby improving the drilling accuracy.

[0042] In another embodiment of the present invention: a limiting frame 45 is fixedly installed on the inner wall of the base 1, and a friction wheel 46 is rotatably installed inside the limiting frame 45;

[0043] The friction wheel 46 is limited by the limiting frame 45 to facilitate its rotation. The friction wheel 46 and the drive disc 47 are coaxially arranged, and the size of the friction wheel 46 is smaller than that of the drive disc 47. Thus, when the friction plate 44 drives the friction wheel 46 to rotate, the drive disc 47 drives the disc 32 to rotate at a larger angle. During the production process, the limiting frame 45 is fixedly installed on the base 1 with screws, and the drive disc 47 is also fixedly installed on the friction wheel 46 with through-hole screws. Both are detachable connections. When the angle of drilling on the circumference of the pipe 2 needs to be changed, a drive disc 47 of different diameter can be replaced on the friction wheel 46. At the same time, the height of the limiting frame 45 can be adjusted according to the different diameters of the drive disc 47 to adapt to different production requirements.

[0044] In another embodiment of the present invention: a sliding frame 51 is vertically slidably installed on the inner wall of the base 1, a connecting rod 52 is fixedly installed at the bottom end of the sliding frame 51, a rotating shaft 54 ​​is rotatably installed inside the base 1, a rotating frame 55 is fixedly installed on the rotating shaft 54, a push rod 56 is fixedly installed on the rotating frame 55, a protruding plate 58 is fixedly installed at the bottom end of the rotating frame 55, a connecting frame 53 is fixedly installed at the end of the connecting rod 52 away from the sliding frame 51, and a round rod 57 is fixedly installed on the connecting frame 53;

[0045] The round rod 57 is positioned above the convex plate 58. After the drilling of the pipe 2 is completed, the electric push rod 43 can drive the servo motor 41 to continue to descend. At this time, the friction plate 44 will continue to descend until the friction plate 44 descends and drives the sliding frame 51 to descend. When the sliding frame 51 descends, it will drive the connecting rod 52 to descend. At this time, the connecting rod 52 will drive the round rod 57 to move down through the connecting frame 53. At this time, the round rod 57 will press down the convex plate 58 to make the rotating frame 55 rotate by the rotating shaft 54. As the rotating frame 55 rotates, the push rod 56 on it will push the extrusion ring 33 to move. At this time, the extrusion ring 33 will approach the disc 32, thereby driving each slider 34 to move so that each clamping bar 36 opens.

[0046] In another embodiment of the present invention: a first inclined edge is provided on the slider 34, and a second inclined edge is provided on the end of the extrusion ring 33 near the slider 34;

[0047] When the extrusion ring 33 is pushed by the push rod 56 and moves toward the disk 32, the second inclined edge on the extrusion ring 33 will extrude the first inclined edge on the slider 34. At this time, the slider 34 will be extruded and move away from the center of the disk 32.

[0048] In another embodiment of the present invention: a groove is provided on the disc 32, and the slider 34 is slidably installed in the groove, and a first return spring is fixedly installed between the slider 34 and the inner wall of the groove;

[0049] A second return spring is fixedly installed between the compression ring 33 and the disc 32;

[0050] Wherein, when the push rod 56 no longer pushes the extrusion ring 33, the slider 34 and the extrusion ring 33 can be reset by the first reset spring and the second reset spring, and the reset process of the extrusion ring 33 is the process of driving the clamp rod 36 to clamp the pipe 2.

[0051] In another embodiment of the application: the inside of the sliding plate 35 is rotatably installed with a long strip 61 and a rotating wheel 64, and the long strip 61 penetrates the clamp rod 36, and the end of the long strip 61 away from the disc 32 is fixedly installed with a baffle 62;

[0052] The rotating wheel 64 and the long strip 61 are transmissionally installed with a belt 63, and the disc 32 is fixedly installed with a long plate 65;

[0053] Wherein, the rotating wheel 64 and the long plate 65 are in close contact, and when the extrusion ring 33 approaches the disc 32, the slider 34 will drive the sliding plate 35 to move away from the center of the disc 32, and when the sliding plate 35 moves, it will drive the rotating wheel 64 to move, and at this time, the rotating wheel 64 will rotate through the long plate 65, and at this time, the rotating wheel 64 will drive the long strip 61 to rotate through the belt 63, so that the baffle 62 rotates, and at this time, the clamp rod 36 also moves away from the pipe 2, and the baffle 62 also moves away, which facilitates the falling of the pipe 2, and when the subsequent pipe 2 slides into the clamp rod 36, at this time, the clamp rod 36 approaches each other, and as the clamp rod 36 approaches, the baffle 62 also rotates to reset, and at this time, the baffle 62 will prevent the subsequent pipe 2 from sliding out, and control the position of the subsequent pipe 2 to stop, so as to improve the accuracy of subsequent punching;

[0054] Wherein, the three clamp rods 36 are arranged in a circular array, the two bottommost clamp rods 36 are kept in the same horizontal plane, and when the three clamp rods 36 move away from each other, the distance between the two bottommost clamp rods 36 will not be greater than the diameter of the pipe 2, so that the pipe 2 can slide on the two bottommost clamp rods 36 without falling off.

[0055] In another embodiment of the application: the bottom end of the base 1 is inclinedly arranged, and the end of the sliding plate 35 away from the clamp rod 36 is fixedly installed with an extension rod 37;

[0056] Wherein, a pipe can also be arranged, the outlet end of the pipe is connected with the extension rod 37, the pipe can be placed with the pipe 2, and the pipe is inclinedly arranged, so that the pipe 2 in the pipe can slide onto the extension rod 37;

[0057] Wherein, when the base 1 is placed, the clamp rod 36 and the horizontal line have a certain inclination, so that the pipe 2 on the extension rod 37 can move towards the clamp rod 36, and the pipe 2 on the clamp rod 36 can also slide downward.

[0058] In another embodiment of the present application: the clamping rod 36 is fixedly connected with a variable-diameter rod 361, and the variable-diameter rod 361 is conical, and the large end of the variable-diameter rod 361 is fixedly connected with the clamping rod 36;

[0059] When the three clamping rods 36 are away from the pipe 2, the pipe 2 will no longer be clamped, at this time, the pipe 2 can slide downward on the clamping rod 36 until the pipe 2 moves to the position of the variable-diameter rod 361, at this time, the small end of the variable-diameter rod 361 directly becomes small, the pipe 2 will again be inclined downward along the variable-diameter rod 361 and slide off until it is completely dropped, and the pipe 2 on the extension rod 37 will move towards the clamping rod 36, and after the processed pipe 2 is dropped, the electric push rod 43 will also push the servo motor 41 to rise so as to reset the extrusion ring 33, at this time, the clamping rods 36 will also be close to each other to slowly clamp the subsequent entering pipe 2, and before clamping, the sliding of the pipe 2 on the clamping rod 36 will stop until the pipe 2 is in close contact with the baffle 62, so that the position of the pipe 2 is fixed after being clamped;

[0060] The extrusion ring 33 is provided with a groove, and the size of the groove is matched with the size of the sliding plate 35, so that the sliding plate 35 is flush with the outer surface of the extrusion ring 33, so that when the disc 32 drives the sliding plate 35 to rotate, the push rod 56 will not abut against the sliding plate 35.

[0061] A machining process of a jig for improving machining precision: further comprising the following steps:

[0062] S1, placing a plurality of pipes 2 on the extension rod 37;

[0063] S2, starting the electric push rod 43 and the servo motor 41, so that the electric push rod 43 drives the servo motor 41 to move up and down, and the electric push rod 43 drives the drill bit 42 to move to perform the punching operation;

[0064] S3, the drill bit 42 performs punching machining on the pipe 2, and after each time the drill bit 42 exits, the disc 32 drives the pipe 2 to rotate adaptively;

[0065] S4, after the punching is completed, the servo motor 41 moves downward by a deeper distance to release the clamping of the pipe 2 by the clamping rod 36.

[0066] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is self-evident that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above figures and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present application.

Claims

1. A jig for improving machining accuracy, comprising a base (1) and a pipe (2), characterized in that, The base (1) is fixedly installed with a limiting seat (31), the limiting seat (31) is rotatably installed with a disc (32), the disc (32) is slidably installed with an extrusion ring (33) along the axial direction, the disc (32) is slidably installed with a sliding block (34) along the radial direction, the sliding block (34) is fixedly installed with a sliding plate (35), and the sliding plate (35) is fixedly installed with a clamping rod (36) at one end close to the center of the extrusion ring (33); The base (1) is fixedly installed with an electric push rod (43), the output end of the electric push rod (43) is fixedly installed with a servo motor (41), and the output end of the servo motor (41) is fixedly installed with a drill bit (42); The bottom end of the servo motor (41) is fixedly installed with a friction plate (44), the inside of the base (1) is rotatably installed with a friction wheel (46), one end of the friction wheel (46) away from the servo motor (41) is fixedly installed with a driving disc (47), and the driving disc (47) is attached to the disc (32); When the drill bit (42) punches the pipe (2) on the surface, the disc (32) is rotated with each retreat of the drill bit (42) to displace the pipe (2) to facilitate punching the next position; The disc (32) is provided with a clamping groove (321), the limiting seat (31) is slidably installed with a T-shaped insertion rod (48), one end of the insertion rod (48) close to the disc (32) is provided with a chamfer, and the short arm end of the insertion rod (48) and the limiting seat (31) are fixedly installed with a spring; The inner wall of the base (1) is fixedly installed with a limiting frame (45), and the friction wheel (46) is rotatably installed in the limiting frame (45); The inner wall of the base (1) is vertically slidably installed with a sliding frame (51), the bottom end of the sliding frame (51) is fixedly installed with a connecting rod (52), the inside of the base (1) is rotatably installed with a rotating shaft (54), the rotating shaft (54) is fixedly installed with a rotating frame (55), the rotating frame (55) is fixedly installed with a push rod (56), the bottom end of the rotating frame (55) is fixedly installed with a convex plate (58), one end of the connecting rod (52) away from the sliding frame (51) is fixedly installed with a connecting frame (53), and the connecting frame (53) is fixedly installed with a round rod (57); The sliding block (34) is provided with a first bevel, and one end of the extrusion ring (33) close to the sliding block (34) is provided with a second bevel; The disc (32) is provided with a sliding groove, and the sliding block (34) is slidably installed in the sliding groove, and the sliding block (34) and the inner wall of the sliding groove are fixedly installed with a first reset spring; The extrusion ring (33) and the disc (32) are fixedly installed with a second reset spring; The inside of the sliding plate (35) is rotatably installed with a long strip (61) and a rotating wheel (64), and the long strip (61) penetrates through the clamping rod (36), and one end of the long strip (61) away from the disc (32) is fixedly installed with a baffle (62); The transmission between the runner (64) and the long strip (61) is installed with a belt (63), and the disc (32) is fixedly installed with a long plate (65).

2. The jig for improving machining accuracy according to claim 1, wherein The bottom end of the base (1) is obliquely arranged, and the sliding plate (35) is fixedly installed with an extension rod (37) away from one end of the clamping rod (36).

3. The jig of claim 1, wherein The clamping rod (36) is fixedly installed with a variable-diameter rod (361), which is conical, and the large end of the variable-diameter rod (361) is fixedly connected with the clamping rod (36).

4. The machining process of claim 1, wherein, Further comprising the following steps: S1, placing a plurality of pipe materials (2) on the extension rod (37); S2, starting the electric push rod (43) and the servo motor (41), so that the electric push rod (43) drives the servo motor (41) to move up and down, and at the same time the electric push rod (43) drives the drill bit (42) to move to perform the punching operation; S3, the drill bit (42) punches the pipe material (2), and after each time the drill bit (42) exits, the disc (32) drives the pipe material (2) to rotate adaptively; S4, after the punching is completed, the servo motor (41) moves downward by a deeper distance to release the clamping of the pipe material (2) by the clamping rod (36).

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