Screw machining clamp

Abstract

The utility model discloses a screw rod machining clamp. The screw rod machining clamp comprises a movable base and two clamping assemblies symmetrically arranged on the movable base. The clamping assembly comprises a fixed clamping part and a movable clamping part located above the fixed clamping part, the fixed clamping part and the movable clamping part are each of an arc-shaped structure, an arc opening of the fixed clamping part is opposite to an arc opening of the movable clamping part, and a limiting plate is arranged on one side of the fixed clamping part; the movable clamping part is connected with a lifting driving piece, and the lifting driving piece is installed on the translation driving piece. According to the scheme, during clamping, a screw only needs to be placed on the two fixed clamping parts, then the movable clamping parts are driven by the translation driving part and the lifting driving part to move to the position above the screw for clamping, compared with clamping structures such as a three-jaw chuck, the end of the screw does not need to be inserted into a clamping area, placement is easier, labor is saved, and the clamping efficiency is improved. And moreover, the end part of the screw cannot be damaged in the insertion process, and the clamp is suitable for clamping and fixing the screw with larger mass and longer length during drilling.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of screw processing, more specifically, to a screw processing fixture. BACKGROUND

[0002] Screw processing refers to the processing of shape, size and surface quality of a screw through a mechanical processing method to make it meet the required technical requirements. Screws are widely used in many industries, including automobiles, machinery, aerospace, etc., so the processing requirements for screws are very high. The processing includes turning, milling and other steps, and some screws also need to be drilled in specific use cases. In the drilling process, the two ends of the screw are clamped by a fixture to prevent the screw from shifting during drilling, especially when processing long screws. Using a fixture can prevent hole position deviation caused by vibration or instability.

[0003] In the drilling process, a three-jaw chuck structure is currently used to fix the screw, but this fixing step requires manual insertion of the screw end into the chuck. For heavy or long screws, this insertion step is very laborious, and when the chuck is connected, it is easy to cause damage to the end of the screw. SUMMARY

[0004] The utility model aims at providing a screw processing fixture to solve the technical problems in the background art.

[0005] The utility model technical scheme provides a screw processing fixture, which comprises a movable base, two clamping assemblies symmetrically arranged on the movable base,

[0006] The clamping assembly comprises a fixed clamping part and a movable clamping part located above the fixed clamping part. Both the fixed clamping part and the movable clamping part are arc-shaped structures. The arc-shaped opening of the fixed clamping part is opposite to that of the movable clamping part. A limiting plate is arranged on one side of the fixed clamping part. A lifting driving element is connected to the movable clamping part. The lifting driving element is installed on a translation driving element. When placing the screw, the translation driving element drives the movable clamping part to move out of position with the fixed clamping part.

[0007] In a preferred embodiment, a translation seat is arranged on the translation driving element. Two spaced-apart translation plates are connected to the translation seat. Guide rods are arranged on the translation plates. Guide blocks are arranged on both sides of the movable clamping part and are in sliding connection with the guide rods. The width between the two translation plates is greater than the width of the fixed clamping part.

[0008] In a preferred embodiment, a support is also installed on the translation plate. The lifting driving element is installed on the support, and the output end of the lifting driving element is connected to the top of the movable clamping part.

[0009] In a preferred embodiment, the fixed clamping part and the moving clamping part are provided with arc-shaped anti-skid plates, and the surfaces of the arc-shaped anti-skid plates are rough.

[0010] In a preferred embodiment, the arc-shaped anti-skid plates in the fixed clamping part and the moving clamping part are detachably provided, and the sizes of the arc-shaped anti-skid plates are not unique.

[0011] In a preferred embodiment, the arc-shaped anti-skid plates are provided with mounting blocks outside, and the mounting blocks are provided with mounting grooves corresponding to the fixed clamping parts and the moving clamping parts.

[0012] In a preferred embodiment, the mounting blocks and the mounting grooves are magnetically fixed.

[0013] In a preferred embodiment, the moving base comprises a base body, an electric bidirectional screw rod mounted on the base body, and two limiting seats connected with the electric bidirectional screw rod, and the two clamping assemblies are respectively mounted on the two limiting seats.

[0014] The beneficial effects of the technical scheme of the utility model are as follows:

[0015] In the clamping, the screw rod is only placed on the two fixed clamping parts, and then the moving clamping part is driven to move above the screw rod by the translation driving part and the lifting driving part, and then clamping is performed, compared with the clamping structure of the three-jaw chuck, the end of the screw rod does not need to be inserted into the clamping area, the placement is simpler and more labor-saving, and the end of the screw rod will not be damaged due to the insertion process, and the utility model is suitable for clamping and fixing of a screw rod with large mass and long length during drilling. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 FIG. 1 is a schematic diagram of the overall structure of the utility model,

[0017] Fig. 2 FIG. 2 is a schematic diagram of the overall structure of the clamping assembly of the utility model,

[0018] Fig. 3 FIG. 3 is a schematic diagram of the overall structure of the clamping assembly of the utility model from another perspective.

[0019] Mark 1 moving base, 11 base body, 12 electric bidirectional screw rod, 2 clamping assembly, 21 fixed clamping part, 22 moving clamping part, 23 translation driving part, 24 translation seat, 25 translation plate, 26 lifting driving part, 27 guide rod, 28 guide block, 29 support, 3 arc-shaped anti-skid plate, 4 mounting block, 5 mounting groove. DETAILED DESCRIPTION

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical applications of the present invention, and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for a particular purpose.

[0021] like Figs. 1-3 As shown, this utility model provides a screw processing fixture, including a movable base 1 and two clamping assemblies 2 symmetrically arranged on the movable base 1. Each clamping assembly 2 includes a fixed clamping part 21 and a movable clamping part 22 located above the fixed clamping part 21. Both the fixed clamping part 21 and the movable clamping part 22 are arc-shaped structures, with the arc openings of the fixed clamping part 21 and the movable clamping part 22 facing each other. A limit plate is provided on one side of the fixed clamping part 21, and a lifting drive component 26 is connected to the movable clamping part 22. The lifting drive component 26 is mounted on a translation drive component 23.

[0022] In the above scheme, two clamping components 2 respectively clamp and fix both ends of the screw. During clamping, the fixed clamping part 21 is in a fixed position, and the movable clamping part 22 above it can move horizontally and vertically under the drive of the translation drive 23 and the lifting drive 26 to cooperate with the fixed clamping to clamp the end of the screw. In this scheme, the distance between the two clamping components 2 is first adjusted by the movable base 1 to match the screw of the corresponding length. Then the screw is placed on the fixed clamping part 21, and the distance between the two clamping components 2 is adjusted again so that the limiting plate on the fixed clamping part 21 contacts the end of the screw. Then the movable clamping part 22 is driven to move closer to the fixed clamping part 21 to clamp the screw.

[0023] The movable seat includes a base body 11, a motorized bidirectional lead screw 12 mounted on the base body 11, and two limiting seats connected to the motorized bidirectional lead screw 12. The two clamping assemblies 2 are respectively mounted on the two limiting seats. When the motorized bidirectional lead screw 12 is activated, it drives the two clamping assemblies 2 to move in a direction that moves closer to or further away from each other.

[0024] The translation driving part 23 drives the moving clamping part 22 to move to be out of position with the fixed clamping part 21 when the screw is placed, which avoids the moving clamping part 22 from blocking when the screw is placed in the fixed clamping part 21, and plays a role of giving way. After the placement, the moving clamping part 22 is driven by the translation driving part 23 to move to the fixed clamping part 21, to be aligned vertically, and then the moving clamping part 22 is driven by the lifting driving part 26 to be lowered to be clamped on the screw. The scheme only needs to place the screw on the two fixed clamping parts 21, and then drive the moving clamping part 22 to move above the screw by the translation driving part 23 and the lifting driving part 26 to clamp, compared with the clamping structure of the three-jaw chuck, the screw end does not need to be inserted into the clamping area, the placement is more simple and labor-saving, and the screw end will not be damaged due to the insertion process, which is suitable for the clamping and fixing of the screw with large mass and long length when drilling.

[0025] The translation driving part 23 is provided with a translation seat 24, two interval arranged translation plates 25 are connected on the translation seat 24, a guide rod 27 is arranged on the translation plate 25, and guide blocks 28 are arranged on both sides of the moving clamping part 22 and are in sliding connection with the guide rod 27. A support 29 is also installed on the translation plate 25, the lifting driving part 26 is installed on the support 29, and the output end of the lifting driving part 26 is connected with the top of the moving clamping part 22.

[0026] The translation driving part 23 adopts a structure of motor, screw rod and guide rail to realize the horizontal movement of the translation seat 24, and indirectly realize the horizontal movement of the moving clamping part 22. The width between the two translation plates 25 is greater than the width of the fixed clamping part 21, which realizes the giving way to the fixed clamping part 21 during the movement. The lifting driving part 26 adopts a cylinder structure to drive the moving clamping part 22 to be lowered to clamp the screw after the translation is completed. The guide rod 27 and the guide block 28 cooperate to ensure the stable lifting of the moving clamping part 22.

[0027] Arc-shaped anti-skid plates 3 are arranged in the fixed clamping part 21 and the moving clamping part 22. The surface of the arc-shaped anti-skid plate 3 is rough, which can increase the friction between the screw and the arc-shaped anti-skid plate 3 after being fixed, to avoid the screw from slipping and moving during the machining process. The arc-shaped anti-skid plates 3 in the fixed clamping part 21 and the moving clamping part 22 are detachably arranged, and the size of the arc-shaped anti-skid plate 3 is not unique. Different thicknesses of the arc-shaped anti-skid plate 3 can be replaced to adapt to the fixing of the screws with different diameters of the end part.

[0028] The arc-shaped anti-skid plate 3 is externally provided with mounting blocks 4, a plurality of mounting grooves 5 are correspondingly arranged in the fixed clamping portions 21 and the movable clamping portions 22 which are arranged at intervals along the external arc surface of the arc-shaped anti-skid plate 3. The mounting blocks 4 are magnetically fixed with the mounting grooves 5, a magnet block is arranged on the mounting block 4, the fixed clamping portions 21 and the movable clamping portions 22 are both made of magnetic metal material, the mounting block 4 can be fixed after being inserted into the mounting groove 5, the mounting blocks 4 are dispersedly arranged outside the arc-shaped anti-skid plate 3, the fixing is more firm, and the above fixing mode is convenient for replacing the arc-shaped anti-skid plate 3.

[0029] Obviously, the embodiments described are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art and related fields without creative work should belong to the protection scope of the present application. The structures, devices and operation methods not specifically described and explained in the present application, if not specially stated and limited, are implemented according to the conventional means in the art.

Claims

1. A screw machining jig, characterised in that: The mobile base, two clamping assemblies symmetrically arranged on the mobile base; The clamping assembly comprises a fixed clamping part and a movable clamping part above the fixed clamping part, both of which are arc-shaped structures, and the arc-shaped opening of the fixed clamping part is opposite to that of the movable clamping part, and a limiting plate is arranged on one side of the fixed clamping part; a lifting driving element is connected to the movable clamping part, and the lifting driving element is installed on a translation driving element, and the translation driving element drives the movable clamping part to move out of position with the fixed clamping part when placing the screw rod.

2. A screw machining jig according to claim 1, wherein: A translation seat is arranged on the translation driving element, two spaced translation plates are connected to the translation seat, a guide rod is arranged on the translation plate, and guide blocks are arranged on both sides of the movable clamping part and are in sliding connection with the guide rod, and the width between the two translation plates is greater than the width of the fixed clamping part.

3. A screw machining jig according to claim 2, wherein: A support is also installed on the translation plate, the lifting driving element is installed on the support, and the output end of the lifting driving element is connected to the top of the movable clamping part.

4. A screw machining jig according to claim 1, wherein: Arc-shaped anti-skid plates are arranged in the fixed clamping part and the movable clamping part, and the surface of the arc-shaped anti-skid plate is rough.

5. A screw machining jig according to claim 4, wherein: The arc-shaped anti-skid plates in the fixed clamping part and the movable clamping part are detachably arranged, and the size of the arc-shaped anti-skid plate is not unique.

6. A screw machining jig according to claim 5, wherein: An installation block is arranged outside the arc-shaped anti-skid plate, and a plurality of installation grooves corresponding to the installation block are arranged in the fixed clamping part and the movable clamping part.

7. A screw machining jig according to claim 6, wherein: The installation block and the installation groove are magnetically fixed.

8. A screw machining jig according to claim 1, wherein: The mobile seat comprises a base body, an electric bidirectional screw rod installed on the base body, and two limiting seats connected to the electric bidirectional screw rod, and the two clamping assemblies are respectively installed on the two limiting seats.

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