Self-adjusting CNC jig

Abstract

The utility model discloses a self-adjusting CNC jig which comprises a CNC machining base, a first sliding groove is formed in the CNC machining base, a two-way screw and a sliding rod are rotationally connected in the first sliding groove, a servo motor is fixedly connected to the left side of the CNC machining base, the output end of the servo motor is fixedly connected with the two-way screw, and the output end of the two-way screw is fixedly connected with the sliding rod. The two ends of the two-way screw and the two ends of the sliding rod are in threaded connection with supporting blocks, the upper ends of the supporting blocks on the two sides are fixedly connected with clamp bodies, and the clamp bodies on the two sides are oppositely arranged. By means of the structure, the servo motor drives the two-way screw to rotate, the clamp bodies on the two sides get close to each other, meanwhile, a part extrudes the needle rod, under the action of the spring, the needle rod abuts against the part, self-adjustment is achieved, hydraulic oil is made to apply pressure to the metal flexible lining through the oil way and the through hole through the oil pump, and the metal flexible lining is fixed. And the clamping force is large, the applicability is good, and the operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of CNC machining jigs, in particular to a self-adjusting CNC jig. Background Art

[0002] CNC, or computer numerical control machine tool, is an automated machine tool equipped with a program control system. It is mainly used for large-scale processing of parts. It is generally composed of a main machine, CNC device, drive device, auxiliary device, programming and other ancillary equipment. The CNC device is the core of CNC. In CNC processing, fixtures are needed to facilitate the processing of workpieces.

[0003] The existing CNC fixed fixture can only correspond to one type of component and has poor adaptability. When the model is changed, the previous fixture will be scrapped, resulting in a waste of resources. At the same time, precise adjustment is required before use, wasting a lot of resources and time. Therefore, a self-adjusting CNC fixture is proposed. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a self-adjusting CNC fixture, which solves the problems of poor adaptability and inconvenient adjustment.

[0005] The utility model also provides the above-mentioned self-adjusting CNC fixture, including a CNC processing base, a first slide groove is provided in the CNC processing base, a bidirectional screw and a slide rod are rotatably connected in the first slide groove, a servo motor is fixedly connected to the left side of the CNC processing base, the output end of the servo motor is fixedly connected to the bidirectional screw, both ends of the bidirectional screw and the slide rod are threadedly connected to support blocks, the upper ends of the support blocks on both sides are fixedly connected to the clamp body, and the clamp bodies on both sides are arranged relatively; the two sides of the clamp body are connected to the fixing plates by bolts, a second slide groove is provided in the clamp body, and a locking mechanism is provided in the second slide groove Mechanism, the locking mechanism is composed of a metal flexible bushing and a sealing ring, the sealing ring is located at both ends of the metal flexible bushing, a needle rod is slidably connected in the metal flexible bushing, a slider is fixedly connected to the rear end of the needle rod, and a spring is fixedly connected to the rear end of the slider; the needle rod has three rows and six columns, and corresponds to the second slide groove respectively, an oil circuit is arranged between the needle rods in each row, a through hole is arranged on the oil circuit, and is communicated with the locking mechanism in the second slide groove; the oil circuits on the upper and lower sides are communicated with each other, one end of the upper oil circuit is connected to the oil pump through an oil pipe, and the other end is fixedly connected to a pressure gauge, one end of the lower oil circuit is sealed, and the other end is threadedly connected to a regulating valve.

[0006] According to the self-adjusting CNC fixture, a rubber sealing ring is fixedly connected to the position where the needle rod slides on the inner fixing plate of the fixture body.

[0007] According to the self-adjusting CNC fixture, the needle bar output end is fixedly connected with a rubber pad.

[0008] According to the self-adjusting CNC jig, a retractable pleated plate is fixedly connected between the support blocks on both sides.

[0009] According to the self-adjusting CNC fixture, the slider is disc-shaped, and a wear-resistant ring is fixedly connected to the outer periphery.

[0010] The utility model has the following beneficial effects:

[0011] In the utility model, a servo motor drives a bidirectional screw to rotate, so that the clamp bodies on both sides are close to each other, and at the same time, the parts squeeze the needle bar. Under the action of the spring, the needle bar is pressed against the parts to achieve self-adjustment, and then the oil pump allows hydraulic oil to pass through the oil path and the through hole to apply pressure to the metal flexible bushing and fix it, thereby fixing the parts to be processed. The utility model has large clamping force, good applicability and simple operation.

[0012] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments;

[0014] Figure 1 This is a structural diagram of a self-adjusting CNC fixture of the utility model;

[0015] Figure 2 This is the internal structure diagram of the CNC machining base of a self-adjusting CNC fixture of the utility model;

[0016] Figure 3 This is a cross-sectional view of the fixture body of a self-adjusting CNC fixture of the utility model;

[0017] Figure 4 for Figure 2 A magnified view of the structure at center A;

[0018] Figure 5 The utility model is a diagram of the oil circuit structure of a self-adjusting CNC fixture.

[0019] Legend:

[0020] 1. CNC machined base; 2. fixture body; 21. second slide groove; 22. metal flexible bushing; 23. sealing ring; 24. needle rod; 25. slider; 26. spring; 27. rubber sealing ring; 28. rubber pad; 3. support block; 4. first slide groove; 5. bidirectional screw; 6. slide rod; 7. servo motor; 8. retractable pleated plate; 9. oil circuit; 91. through hole; 10. fixed plate; 11. pressure gauge; 12. regulating valve. DETAILED DESCRIPTION

[0021] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0022] Reference Figure 1-5 The utility model embodiment is a self-adjusting CNC fixture, which includes a CNC processing base 1, a first slide groove 4 is arranged in the CNC processing base 1, a bidirectional screw rod 5 and a slide rod 6 are rotatably connected in the first slide groove 4, and the slide rod 6 has a guiding function. A servo motor 7 is fixedly connected to the left side of the CNC processing base 1, and the output end of the servo motor 7 is fixedly connected to the bidirectional screw rod 5. Both ends of the bidirectional screw rod 5 and the slide rod 6 are threadedly connected to support blocks 3, and the upper ends of the support blocks 3 on both sides are fixedly connected to the clamp body 2. The clamp bodies 2 on both sides are relatively arranged, and a retractable pleated plate 8 is fixedly connected between the support blocks 3 on both sides. The retractable pleated plate 8 is used to collect fallen debris to prevent it from entering the first slide groove 4;

[0023] The two sides of the clamp body 2 are connected with a fixing plate 10 by bolts, a second slide groove 21 is provided in the clamp body 2, and a locking mechanism is provided in the second slide groove 21. The locking mechanism is composed of a metal flexible bushing 22 and a sealing ring 23. The sealing ring 23 is located at both ends of the metal flexible bushing 22, and the sealing ring 23 is fixedly connected in the second slide groove 21. Under the action of the sealing ring 23, the two ends of the metal flexible bushing 22 are sealed, and a needle rod 24 is slidably connected in the metal flexible bushing 22. A rubber sealing ring 27 is fixedly connected at the position where the needle rod 24 slides on the inner side fixing plate 10 of the clamp body 2, and the rubber sealing ring 27 can prevent dust and water from entering the second slide groove 21. A rubber pad 28 is fixedly connected to the output end of the needle rod 24, and the rubber pad 28 is used to protect parts. A slider 25 is fixedly connected to the rear end of the needle rod 24. The slider 25 is disc-shaped and fixedly connected to the outer periphery with a wear-resistant ring. A spring 26 is fixedly connected to the rear end of the slider 25, and the spring 26 is a reset spring.

[0024] There are three rows and six columns of needle rods 24, each needle rod 24 corresponds to a second slide groove 21, an oil circuit 9 is provided between each row of needle rods 24, a through hole 91 is provided on the oil circuit 9, and it is interconnected with the locking mechanism in the second slide groove 21, and the upper and lower oil circuits 9 are interconnected. One end of the upper oil circuit 9 is connected to the oil pump through an oil pipe, and the other end is fixedly connected to a pressure gauge 11. When in use, the hydraulic oil is applied to the metal flexible bushing 22 through the oil circuit 9 and the through hole 91 through the oil pump to apply pressure and fix it. One end of the lower oil circuit 9 is sealed, and the other end is threadedly connected to a regulating valve 12, and the pressure can be adjusted by the regulating valve 12.

[0025] Working principle: When in use, first place the parts to be processed between the two side clamp bodies 2, and then start the servo motor 7. The servo motor 7 drives the bidirectional screw 5 to rotate, so that the two side clamp bodies 2 are close to each other. At the same time, the parts squeeze the needle rod 24. At this time, start the oil pump to make the hydraulic oil pass through the oil path 9 and the through hole 91 to apply pressure to the metal flexible bushing 22 and fix it, thereby fixing the parts to be processed. The pressure is controllable, the clamping force is large, the applicability is good, and the operation is simple.

[0026] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A self-adjusting CNC fixture, characterized in that: include: A CNC machining base (1) is provided with a first slide groove (4) in the CNC machining base (1), a bidirectional screw rod (5) and a slide rod (6) are rotatably connected in the first slide groove (4), a servo motor (7) is fixedly connected to the left side of the CNC machining base (1), the output end of the servo motor (7) is fixedly connected to the bidirectional screw rod (5), both ends of the bidirectional screw rod (5) and the slide rod (6) are threadedly connected to support blocks (3), the upper ends of the support blocks (3) on both sides are fixedly connected to a clamp body (2), and the clamp bodies (2) on both sides are arranged oppositely; the two sides of the clamp body (2) are connected with a fixing plate (10) by bolts, a second slide groove (21) is provided in the clamp body (2), a locking mechanism is provided in the second slide groove (21), and the locking mechanism is composed of a metal flexible bushing (22) and The invention relates to a metal flexible bushing (22) and a plurality of metal flexible bushings (22). The metal flexible bushing (22) is slidably connected with a needle rod (24), the rear end of the needle rod (24) is fixedly connected with a slider (25), and the rear end of the slider (25) is fixedly connected with a spring (26); the needle rod (24) has three rows and six columns, and corresponds to the second slide groove (21) respectively; an oil circuit (9) is provided between the needle rods (24) in each row; the oil circuit (9) is provided with a through hole (91) and is interconnected with the locking mechanism in the second slide groove (21); the oil circuits (9) on the upper and lower sides are interconnected; one end of the upper oil circuit (9) is connected to the oil pump through an oil pipe, and the other end is fixedly connected with a pressure gauge (11); one end of the lower oil circuit (9) is sealed, and the other end is threadedly connected with a regulating valve (12).

2. A self-adjusting CNC fixture according to claim 1, characterized in that: A rubber sealing ring (27) is fixedly connected to the inner fixing plate (10) of the clamp body (2) at a position where the needle rod (24) slides.

3. A self-adjusting CNC fixture according to claim 2, characterized in that: The output end of the needle rod (24) is fixedly connected with a rubber pad (28).

4. A self-adjusting CNC fixture according to claim 3, characterized in that: A retractable pleated plate (8) is fixedly connected between the support blocks (3) on both sides.

5. A self-adjusting CNC fixture according to claim 4, characterized in that: The sliding block (25) is in the shape of a disc, and a wear-resistant ring is fixedly connected to the outer circumference.

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