A machining positioning fixture

Abstract

The utility model discloses a kind of machining positioning fixtures, including two oppositely arranged bases a, one base a is installed with rotating workbench, another base a is installed with rotating support, rotating workbench is connected with rotating support between tray, two groups of clamp assemblies are installed on tray, the bottom of tray is installed with two cylinders, clamp assembly and tray are connected fixed by quick-change disc, cylinder drives quick-change disc action to realize locking or loosening, clamp assembly includes base b, two oppositely arranged jaws are slidably connected on base b, through screw rod is screwed between two jaws, screw rod rotation drives two jaws to move towards or away from each other. When using, the fixture is installed on the workbench of machine tool, clamp assembly and tray are designed to be separable, and clamping and loosening are controlled by cylinder, workpiece is gripped by robot during processing, clamp assembly and its workpiece, which is beneficial to improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of tooling and fixture technology, specifically a machining positioning fixture. Background Technology

[0002] A fixture is a device used in mechanical manufacturing to fix a workpiece in the correct position for machining or inspection. It is also called a clamp. Broadly speaking, any device used to quickly, conveniently, and safely install a workpiece at any stage of the manufacturing process can be called a fixture. Machining such as... Figure 1 When dealing with box-shaped workpieces as shown, due to their small size, they are generally fixed on the machine tool's worktable using vises. Since they are produced in batches, each processing operation requires clamping and unclamping the workpiece at the machine tool, which affects processing efficiency. Utility Model Content

[0003] The purpose of this utility model is to provide a machining positioning fixture to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a machining positioning fixture, comprising two opposing bases a, one of which has a rotary worktable mounted on it, and the other base a has a rotary support mounted on it. A support plate connects the rotary worktable and the rotary support. Two sets of clamping assemblies are mounted on the support plate. Two cylinders are mounted on the bottom of the support plate. The clamping assemblies are connected and fixed to the support plate via a quick-change disc. The cylinders drive the quick-change disc to lock or release. Each clamping assembly includes a base b, on which two opposing jaws are slidably connected. A through-hole screw is screwed between the two jaws. The screw has two opposite threads. Rotation of the screw drives the two jaws to move towards or away from each other.

[0005] Preferably, the end of the lead screw is provided with a hexagonal groove for inserting a wrench or handle for rotation.

[0006] Preferably, the jaws are L-shaped and have integrally formed sliders symmetrically arranged on both sides of the lower part, and the inner side of the base b is provided with a sliding groove, into which the sliders are fitted and inserted.

[0007] Preferably, the base b has multiple circular grooves symmetrically arranged on its left and right sides, which are used for positioning when the robot arm grips it.

[0008] Compared with the prior art, the beneficial effects of this utility model are: when in use, the fixture is installed on the worktable of the machine tool, the clamping assembly and the pallet are designed to be separable, and the clamping and releasing are controlled by a cylinder. During the processing, the robot grabs and transfers the clamping assembly and the workpiece on it, which helps to improve processing efficiency. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the three-dimensional structure of the workpiece;

[0010] Figure 2 This is a schematic diagram of the structure of this utility model;

[0011] Figure 3 This is a three-dimensional structural diagram of the clamp assembly;

[0012] Figure 4 This is a schematic diagram illustrating the application of this utility model on a machine tool.

[0013] In the diagram: 1. Base a; 2. Rotary worktable; 3. Pallet; 4. Cylinder; 5. Clamp assembly; 51. Base b; 52. Jaw; 53. Slide groove; 54. Slider; 55. Groove; 56. Lead screw. Detailed Implementation

[0014] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0015] Please see Figure 2-4 This utility model provides a technical solution: a machining positioning fixture, including two opposing bases a1. A rotary worktable 2 is mounted on one base a1, and a rotary support is mounted on the other base a1. A support plate 3 is connected between the rotary worktable 2 and the rotary support. The rotary worktable 2 drives the support plate 3 to rotate to adjust the pitch angle. Two sets of clamping assemblies 5 are mounted on the support plate 3. Two cylinders 4 are mounted on the bottom of the support plate 3. The clamping assemblies 5 and the support plate 3 are connected and fixed by a quick-change disc (a mature existing product, commonly used in the end effector of robot arms). The cylinders 4 drive the quick-change disc to lock or release. The clamping assembly 5 includes a base b51. Multiple circular grooves 55 are symmetrically arranged on the left and right sides of the base b51. The jaws 52 are L-shaped and have integrally formed sliders 54 symmetrically arranged on both sides of the lower part. A sliding groove 53 is provided on the inner side of the base b51, and the sliders 54 are fitted into the sliding groove 53.

[0016] The groove 55 is used for positioning during robotic gripping. Two opposing jaws 52 are slidably connected to the base b51. A through-type lead screw 56 is screwed between the two jaws 52. The lead screw 56 has two opposite threads. Rotation of the lead screw 56 drives the two jaws 52 to move towards or away from each other. The end of the lead screw 56 has a hexagonal groove for inserting a wrench or handle for rotation. When the lead screw 56 drives the two jaws 52 closer together, the workpiece is clamped.

[0017] Working principle: During use, this fixture is installed on the machine tool's worktable. The clamping assembly 5 and the pallet 3 are detachable, and the clamping and releasing are controlled by a cylinder 4. During processing, a robot grips the clamping assembly 5 and the workpiece on it, ensuring high processing continuity. The robot is positioned at the front of the machine tool, with finished product racks and blank racks placed on either side of the robot.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machining positioning fixture, comprising two opposing bases a (1), wherein a rotary table (2) is mounted on one of the bases a (1), and a rotary support is mounted on the other base a (1), characterized in that: A tray (3) is connected between the rotary worktable (2) and the rotary support. Two sets of clamp assemblies (5) are installed on the tray (3). Two cylinders (4) are installed at the bottom of the tray (3). The clamp assembly (5) and the tray (3) are connected and fixed by a quick-change disc. The cylinder (4) drives the quick-change disc to lock or release. The clamp assembly (5) includes a base b (51). Two opposing jaws (52) are slidably connected on the base b (51). A through screw (56) is screwed between the two jaws (52). The screw (56) has two opposite threads. The rotation of the screw (56) drives the two jaws (52) to move towards or away from each other.

2. The machining positioning fixture according to claim 1, characterized in that: The end of the lead screw (56) is provided with a hexagonal groove, which is used to insert a wrench or handle for rotation.

3. A machining positioning fixture according to claim 1, characterized in that: The jaws (52) are L-shaped and have integrally formed sliders (54) symmetrically arranged on both sides of the lower part. The inner side of the base b (51) is provided with a groove (53), and the sliders (54) are adapted to fit into the grooves (53).

4. A machining positioning fixture according to claim 1, characterized in that: The base b (51) has multiple circular grooves (55) symmetrically arranged on the left and right sides. The grooves (55) are used for positioning when the robot arm grips the object.

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