Automatic positioning clamp for numerical control machining

Abstract

The utility model relates to an automatic positioning technology, and discloses a numerical control machining automatic positioning clamp which comprises a connecting ring, a hollow column is fixedly connected to the side wall of the connecting ring, a fixing plate is fixedly connected to the outer wall of the connecting ring, and a driving assembly is arranged on the inner wall of the fixing plate. And the driving assembly comprises a motor, the outer wall of the motor is fixedly connected to the interior of the fixing plate, the output end of the motor is fixedly connected with a first gear, the inner wall of the hollow column is rotationally connected with a second gear, the second gear is meshed with the first gear, and the side wall of the second gear is fixedly connected with a face gear. According to the automatic clamping and positioning device, the motor drives the first gear to rotate, drives the second gear to rotate, drives the face gear to rotate, and gathers the clamping jaws together, so that the effect of automatic clamping and positioning is achieved, and the problems that an operator needs to frequently carry out manual clamping and adjustment, the labor intensity is high, and fatigue is likely to be caused are solved; and the working efficiency of the numerical control machining automatic positioning clamp is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to automatic positioning technical field especially relates to numerical control processing automatic positioning fixture. BACKGROUND

[0002] Numerical control processing is a kind of manufacturing technology using computer digital control technology to carry out accurate control to machine tool, can realize high-precision, high-efficiency automatic processing, is suitable for milling, turning, drilling and various processing modes.In numerical control processing, automatic positioning fixture is the important auxiliary equipment, mainly used to solve the deficiency of traditional manual fixture in efficiency, accuracy and flexibility.

[0003] The existing numerical control processing fixture usually adopts manual or semi-automatic clamping mode, and its structure mainly includes clamping jaw, screw rod, handle or hydraulic drive device.The manual fixture realizes the movement of clamping jaw by rotating handle or pulling screw rod, to clamp or release workpiece.The semi-automatic fixture drives clamping jaw by hydraulic or pneumatic pressure, but still needs manual intervention for initial positioning and adjustment.These fixtures can meet the basic clamping demand, but there are obvious deficiencies in operation convenience, positioning accuracy and automation degree.

[0004] However, there is a significant problem in the prior art: the operator needs to frequently carry out manual clamping and adjustment, which is high in labor intensity and easy to cause fatigue.Manual operation is not only low in efficiency, but also easy to cause unstable positioning accuracy due to experience or state difference of the operator, which affects processing quality.In addition, in high-strength and long-time production environment, frequent manual operation increases the physical burden of the operator, causing health problems or human errors, and therefore the numerical control processing automatic positioning fixture is proposed to solve the above problems. UTILITY MODEL CONTENT

[0005] In order to make up for the above deficiencies, the utility model provides numerical control processing automatic positioning fixture, aims at improving the problem that the operator needs to frequently carry out manual clamping and adjustment in prior art, which is high in labor intensity and easy to cause fatigue.

[0006] In order to realize the above purpose, the utility model adopts the following technical scheme:

[0007] Numerical control processing automatic positioning fixture, including connecting ring, the hollow column is fixedly connected in the connecting ring side wall, the fixed plate is fixedly connected on the connecting ring outer wall, the driving assembly is arranged on the fixed plate inner wall;

[0008] The driving assembly includes motor, the motor output end is fixedly connected with the first gear, the hollow column inner wall is rotatably connected with the second gear, the second gear is engaged with the first gear, the face gear is fixedly connected on the second gear side wall, the clamping assembly is arranged in the hollow column.

[0009] As a further description of the above technical solutions:

[0010] The clamping assembly comprises a clamping jaw, a side wall of the clamping jaw is slidingly connected in the hollow column, a tooth is fixedly connected to the side wall of the clamping jaw, and the tooth is engaged with the face gear.

[0011] As a further description of the above technical solutions:

[0012] A stopper is fixedly connected to the outer wall of the clamping jaw, a rubber pad is fixedly connected to the bottom of the stopper, and the bottom of the rubber pad is arranged in the clamping jaw.

[0013] As a further description of the above technical solutions:

[0014] A wedge-shaped block is arranged on the inner wall of the clamping jaw, and a nut is rotatably connected to the inner wall of the wedge-shaped block.

[0015] As a further description of the above technical solutions:

[0016] The outer wall of the nut is threadedly connected in the clamping jaw, and the outer wall of the nut is provided with a spring.

[0017] As a further description of the above technical solutions:

[0018] One end of the spring is fixedly connected to the inner wall of the wedge-shaped block, and the other end of the spring is fixedly connected to the clamping jaw.

[0019] As a further description of the above technical solutions:

[0020] The inner wall of the clamping jaw is fixedly connected with a ladder face column, and the side wall of the ladder face column is arranged on the side wall of the wedge-shaped block.

[0021] The utility model has the advantages of the following:

[0022] In the utility model, the first gear is driven to rotate by the motor, the second gear is driven to rotate, the face gear is driven to rotate, and the clamping jaw is gathered, so that the automatic clamping and positioning effect is achieved.

[0023] In the utility model, the wedge-shaped block of the outer wall is driven to move by rotating the nut, and then is pressed against the side wall of the ladder face column during the movement of the wedge-shaped block, so that the wedge-shaped block moves in position, the effect of adding a small clamping block is achieved, the universality of the clamp is limited by the inability to add a small clamp, and the problem that the clamp is difficult to adapt to workpieces of different shapes, sizes or complexities is solved, and the diversity of the automatic positioning clamp for numerical control machining is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The utility model provides a three-dimensional schematic view of automatic positioning fixture of numerical control processing that is provided by the utility model;

[0025] Figure 2 The utility model provides a hollow column explosion structure schematic view of automatic positioning fixture of numerical control processing that is provided by the utility model;

[0026] Figure 3 The utility model provides a hollow column section structure schematic view of automatic positioning fixture of numerical control processing that is provided by the utility model.

[0027] Legend:

[0028] 1, connecting ring, 2, hollow column, 3, clamping jaw, 4, motor, 5, first gear, 6, second gear, 7, gear tooth, 8, face gear, 9, fixed plate, 10, stopper, 11, rubber pad, 12, ladder face column, 13, wedge block, 14, nut, 15, spring. Specific implementation

[0029] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the protection scope of the utility model.

[0030] With reference to Figure 1 and Figure 2 An embodiment provided by the utility model: automatic positioning fixture of numerical control processing, including connecting ring 1, connecting ring 1 material adopts high-strength alloy steel, it is with higher rigidity and wear resistance, can bear larger clamping force and torque, ensure the stability of fixture in high-speed processing, connecting ring 1 side wall is fixedly connected with hollow column 2, hollow column 2 material adopts light weight aluminum alloy, it is light weight aluminum alloy can guarantee the stability of structure, can reduce the weight of overall fixture again, be convenient for installation and operation, connecting ring 1 outer wall is fixedly connected with fixed plate 9, and fixed plate 9 inner wall is provided with drive assembly;

[0031] The driving assembly comprises a motor 4 fixedly connected to the inner portion of the fixed plate 9, a first gear 5 fixedly connected to the output end of the motor 4, a second gear 6 rotatably connected to the inner wall of the hollow column 2, the second gear 6 being engaged with the first gear 5, the first gear 5 and the second gear 6 being made of carburizing steel, having high hardness and wear resistance, and being able to withstand high load and frequent engagement in transmission, a face gear 8 fixedly connected to the side wall of the second gear 6, and a clamping assembly arranged in the inner portion of the hollow column 2, the clamping assembly comprising a clamping jaw 3 made of tool steel, having high hardness and wear resistance, and being able to withstand frequent clamping and loosening operations, prolonging the service life, the clamping jaw 3 being slidably connected to the inner portion of the hollow column 2, the side wall of the clamping jaw 3 being fixedly connected with a tooth 7, the tooth 7 being engaged with the face gear 8.

[0032] Referring to Figure 1 and Figure 3 The outer wall of the clamping jaw 3 is fixedly connected with a stop block 10, the bottom of the stop block 10 is fixedly connected with a rubber pad 11, the rubber pad 11 is arranged in the inner portion of the clamping jaw 3, the inner wall of the clamping jaw 3 is provided with a wedge block 13 made of tool steel, having high hardness and wear resistance, and being able to withstand clamping force and ensure long-term stability of the wedge block 13, the inner wall of the wedge block 13 is rotatably connected with a nut 14, the outer wall of the nut 14 is threadedly connected in the inner portion of the clamping jaw 3, the outer wall of the nut 14 is provided with a spring 15 made of high-carbon steel, having good elasticity and fatigue strength, being able to adapt to frequent compression and release, and providing a stable thrust force to the wedge block 13, one end of the spring 15 is fixedly connected to the inner wall of the wedge block 13, the other end of the spring 15 is fixedly connected to the inner portion of the clamping jaw 3, the inner wall of the clamping jaw 3 is fixedly connected with a ladder face column 12 made of tool steel, having high hardness and wear resistance, and being able to withstand friction of the wedge block 13, the side wall of the ladder face column 12 is arranged on the side wall of the wedge block 13.

[0033] Working principle: when the numerical control machining automatic positioning clamp is used, firstly, the motor 4 drives the first gear 5 to rotate, then the second gear 6 engaged with the first gear 5 is driven to rotate when the first gear 5 rotates, and the second gear 6 performs circular motion at the center point of the hollow column 2, next, the face gear 8 on the side wall is driven to rotate when the second gear 6 is stressed, so that the face gear 8 rotates in the inner portion of the hollow column 2, then the tooth 7 engaged with the side wall is driven to move in the inner portion of the hollow column 2 when the face gear 8 rotates, next, the clamping jaw 3 on the side wall is driven to move together when the tooth 7 is stressed, in summary, the second gear 6 is driven to rotate by the rotation of the first gear 5, and the tooth 7 is driven to gather, achieving the effect of automatic clamping and positioning.

[0034] Then when adding some special clamps, first put one side of the clamp inside the clamping jaw 3, then turn the nut 14, the nut 14 is forced to rotate, the outer wall of the nut 14 is rotated inside the clamping jaw 3, then the spring 15 on the outer wall is driven to shrink when the nut 14 is forced, and the spring 15 is set to give the wedge block 13 a pushing force when the nut 14 is screwed out, the wedge block 13 is automatically pushed out, then the side wall of the wedge block 13 is abutted against the side wall of the ladder column 12 when it is forced, and the gap exists between the nut 14 and the wedge block 13, and the nut 14 and the wedge block 13 are connected through the key groove, so that the wedge block 13 can be driven to move when the nut 14 rotates, and the wedge block 13 pushes the side wall of the clamp, achieving the effect of adding small clamps.

[0035] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the foregoing embodiments of the present application are described in detail, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement, within the spirit and principles of the present application, any modification, equivalent replacement, improvement, etc., should be included in the scope of protection of the present application.

Claims

1. A numerically controlled machining automatic positioning fixture comprising a connecting ring (1), characterized in that: The connecting ring (1) side wall is fixedly connected with a hollow column (2), the connecting ring (1) outer wall is fixedly connected with a fixed plate (9), the fixed plate (9) inner wall is provided with a driving assembly; The driving assembly includes a motor (4), the motor (4) outer wall is fixedly connected in the fixed plate (9) inside, the motor (4) output is fixedly connected with a first gear (5), the hollow column (2) inner wall is rotatably connected with a second gear (6), the second gear (6) is engaged with the first gear (5), the second gear (6) side wall is fixedly connected with a face gear (8), the hollow column (2) inside is provided with a clamping assembly.

2. The numerically controlled machining automatic positioning fixture according to claim 1, characterized in that: The clamping assembly includes a jaw (3), the jaw (3) side wall is slidably connected in the hollow column (2) inside, the jaw (3) side wall is fixedly connected with a tooth (7), the tooth (7) is engaged with the face gear (8).

3. The numerically controlled machining automatic positioning fixture according to claim 2, characterized in that: The jaw (3) outer wall is fixedly connected with a stop block (10), the stop block (10) bottom is fixedly connected with a rubber pad (11), the rubber pad (11) bottom is arranged in the jaw (3) inside.

4. The numerically controlled machining automatic positioning fixture according to claim 3, characterized in that: The jaw (3) inner wall is provided with a wedge block (13), the wedge block (13) inner wall is rotatably connected with a nut (14).

5. The numerically controlled machining automatic positioning fixture according to claim 4, characterized in that: The nut (14) outer wall is threadedly connected in the jaw (3) inside, the nut (14) outer wall is provided with a spring (15).

6. The numerically controlled machining automatic positioning fixture according to claim 5, characterized in that: One end of the spring (15) is fixedly connected to the inner wall of the wedge block (13), and the other end of the spring (15) is fixedly connected to the inside of the jaw (3).

7. The numerically controlled machining automatic positioning fixture according to claim 6, characterized in that: The jaw (3) inner wall is fixedly connected with a ladder face column (12), and the ladder face column (12) side wall is arranged on the side wall of the wedge block (13).

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