CN104191273B - A kind of workpiece quickly positions the frock clamp of handling - Google Patents

Abstract

A tooling fixture for fast positioning and loading of workpieces, the fixture includes a clamp body base, a self-centering bench vise, keys, a fixture seat, a workpiece, a wrench, a scale, a scale head, a screw A, a spring, a ball, a screw B, and a scale seat. The bottom of the clamp body base is provided with a notch, which is positioned with the turntable table of the machine tool through the notch, and fixed with the turntable table by bolts; the self-centering bench vice fits with the end surface of the clamp body base through a pair of key grooves and keys Positioning; one end of the screw rod is connected with a wrench; the scale base is fixed on one side of the self-centering bench vise through screw B, and balls, springs and screws A are installed inside the scale head in sequence from the inside to the outside, and the scale head can pass through the lower end The square hole and the scale are inserted together, and the workpiece is clamped on the self-centering bench vise. The center of rotation of the workpiece is a fixed coordinate in the coordinate system of the machine tool; different gyration radii of the workpiece can be determined; the device ensures the machining efficiency and precision of the workpiece.

Description

A tooling fixture for fast positioning and loading and unloading of workpieces

technical field

The invention relates to a fixture for fast positioning and loading and unloading of workpieces, and belongs to the field of mechanical design and manufacture of numerically controlled woodworking machine tools.

Background technique

For the processing of mass-produced workpieces, if the CNC woodworking machine tool is not equipped with an automatic edge finder, each workpiece can only be re-set by hand through the handwheel. Therefore, there are the following defects in batch processing: 1) the size error of the blank is relatively large; 2) a tool setting must be performed for each workpiece to be processed; 3) different workpieces are clamped, and it is difficult to grasp the clamping position. The above defects have affected the processing efficiency of mass production of CNC machine tools.

The fixtures on the existing woodworking machine tools have simple structure, single function and great adjustment difficulty. Low efficiency, time-consuming and laborious.

Contents of the invention

In view of the above-mentioned defects in the prior art, the technical problem to be solved by the present invention is to provide a tooling fixture for a numerically controlled machine tool that can improve processing efficiency. In order to solve the above technical problems, the present invention provides a tooling fixture for fast positioning and loading of workpieces. The CNC woodworking machine tool includes a bed, a column installed on the guide rail of the bed and a turntable, and a spindle sliding plate is installed on the column of the machine tool. With five degrees of freedom processing capability.

The purpose of the present invention is to provide a tooling fixture for fast positioning and loading and unloading of workpieces, which includes clamp body base, self-centering bench vise, key, fixture seat, workpiece, wrench, scale, scale head, screw A, spring, Ball, screw B, scale base.

The bottom of the clamp body base is provided with a notch and is positioned with the turntable table of the machine tool through the notch, and is fixed with the turntable table by bolts; the self-centering bench vise is matched with the end surface of the clamp body base through a pair of key grooves and keys position.

There is a pair of fixture seats on the self-centering bench vise, the fixture seats are T-shaped structures, and the fixture seats are matched with the screw rod in the middle of the self-centering bench vise through thread fit; one end of the screw rod is connected with a wrench, The clamping or unloading of the workpiece by the fixture seat can be realized by turning the wrench.

The scale base is fixed on one side of the self-centering bench vise through screw B. The scale can be inserted into the protruding end of the scale base through the square hole at the end. The inside of the scale head is installed with balls, springs and screws A sequentially from the inside to the outside. The scale head can be inserted into the scale through the square hole at the lower end, and the workpiece is clamped on the self-centering vise.

The spring is preloaded by tightening the screw A in the scale head, so that the ball can snap into the designated groove on the upper surface of the scale, so as to achieve the purpose of positioning on the scale. ;

The scale is processed with grooves of equidistant size for the positioning of the scale head, which can achieve the purpose of determining different gyration radii of the workpiece.

The distance between the processing groove on the scale and the middle surface of the self-centering bench vise is customized according to the processing requirements.

Self-centering vises are used to clamp workpieces.

The ruler can be quickly installed and disassembled on the ruler head;

The clamp body base adopts weldment, which can reduce the mass of moving parts.

Compared with the prior art, the present invention has the following beneficial effects.

1. The workpiece rotation center is a fixed coordinate in the machine tool coordinate system

2. It can determine the different gyration radii of the workpiece

3. The device ensures the processing efficiency and precision of the workpiece.

4. The fixture is beneficial to mass production of products, has strong practicability, saves manpower, and contributes to the construction of my country's machinery industry.

Description of drawings

Figure 1 is an assembly diagram of the fixture.

Figure 2 is an exploded view of the fixture assembly.

Figure 3.1 is a working principle diagram of the positioning scale.

Figure 3.2 is a perspective view of the positioning scale.

In the figure: 1. Clamp body base, 2. Self-centering bench vise, 3. Key, 4. Fixture seat, 5. Workpiece, 6. Wrench, 7. Scale, 8. Scale head, 9. Screw A, 10, spring, 11, ball, 12, screw B, 13, scale seat.

detailed description

As shown in Figure 1-3.2, a tooling fixture for fast positioning and loading and unloading of workpieces, the fixture includes a clamp body base 1, a self-centering bench vise 2, a key 3, a fixture seat 4, a workpiece 5, a wrench 6, and a ruler 7 , Scale head 8, screw A9, spring 10, ball 11, screw B12, scale seat 13.

The bottom of the clamp body base 1 is provided with a notch and is positioned with the machine tool turntable table through the notch, and is fixed with the turntable table by bolts; the self-centering bench vise 2 cooperates with the clamp body base through a pair of key grooves and keys 3 The end face of seat 1 is positioned.

The self-centering bench vise 2 is provided with a pair of clamp seats 4, and the fixture seat 4 is a T-shaped structure, and the fixture seat 4 cooperates with the screw rod in the middle of the self-centering bench vice 2 through thread fit; One end is connected with the wrench 6, and the clamping or unloading of the workpiece 5 by the fixture seat 4 can be realized by turning the wrench 6.

The scale base 13 is fixed on one side of the self-centering bench vise 2 through the screw B12. The scale 7 can be inserted into the protruding end of the scale base 13 through the square hole at the end. The inside of the scale head 8 is sequentially installed with balls 11 from the inside to the outside. , spring 10 and screw A9, the scale head 8 can be inserted through the square hole at the lower end to cooperate with the scale 7, and the workpiece 5 is clamped on the self-centering bench vise 2.

The spring is preloaded by tightening the screw A9 in the scale head 8, so that the ball 10 can be snapped into the designated groove on the upper surface of the scale 7, so as to achieve the purpose of positioning on the scale 7.

Grooves with equidistant dimensions are processed on the scale 7 for positioning the scale head 8 and can achieve the purpose of determining different gyration radii of the workpiece 5 .

The distance between the processing groove on the scale 7 and the middle surface of the self-centering bench vise 2 is customized according to the processing requirements.

The self-centering vise 2 is used to clamp the workpiece 5 .

The scale 7 can be quickly installed and disassembled on the scale head 8 . ;

The clamp body base 1 adopts welding parts, which can reduce the quality of moving parts.

Adjust the scale head 8 to the specified position of the scale 7, this specified position represents a specified extension length of the workpiece, the scale 7 is installed on the scale base 13, the workpiece 5 is placed on the table top of the self-centering bench vise 2, and Put one end of the workpiece 5 against the ruler head 8, use the wrench 6 to clamp the workpiece 5, remove the wrench 6, remove the scale 7, complete the installation of the workpiece, and run the CNC program to start processing the workpiece.

Claims (3)

1. A tooling fixture for fast positioning and loading and unloading of workpieces, characterized in that: the fixture includes a clamp body base (1), a self-centering bench vise (2), a key (3), a fixture seat (4), a workpiece ( 5), wrench (6), scale (7), scale head (8), screw A (9), spring (10), ball (11), screw B (12), scale base (13); The bottom of the clamp body base (1) is provided with a spigot and is positioned with the turntable table of the machine tool through the spigot, and is fixed with the turntable table by bolts; the self-centering bench vise (2) passes through a pair of key grooves and keys (3 ) to coordinate with the end face positioning of the clamp body base (1), A pair of fixture seats (4) are provided on the self-centering bench vise (2). The screw rod is matched with the screw rod; one end of the screw rod is connected with the wrench (6), and the clamping or unloading of the workpiece (5) by the clamp seat (4) can be realized by turning the wrench (6); The scale base (13) is fixed on one side of the self-centering bench vise (2) through the screw B (12). The scale (7) can be inserted into the protruding end of the scale base (13) through the square hole at the end. The scale head (8) Balls (11), springs (10) and screws A (9) are installed in sequence from the inside to the outside. The scale head (8) can be inserted into the scale (7) through the square hole at the lower end. The workpiece (5) Clamped on the self-centering bench vise (2); Tighten the screw A (9) in the scale head (8) to preload the spring, so that the ball (11) can be snapped into the designated groove on the upper surface of the scale (7), so as to achieve the purpose of positioning on the scale (7) . 2. A tooling fixture for fast positioning and loading and unloading of workpieces according to claim 1, characterized in that: the scale (7) is processed with grooves of equidistant size for the positioning of the scale head (8), which can achieve the determination of the workpiece (5) The purpose of different gyration radii; The distance between the groove processed on the scale (7) and the middle surface of the self-centering bench vise (2) is customized according to the processing requirements; The self-centering bench vise (2) is used to clamp the workpiece (5); The clamp body base (1) adopts a weldment, which can reduce the quality of the moving parts. 3. A kind of tooling fixture for fast positioning and loading and unloading of workpieces according to claim 1, characterized in that: adjust the scale head (8) to a specified position of the scale (7), and this specified position represents a specified extension length of the workpiece, Install the scale (7) on the scale base (13), place the workpiece (5) on the table of the self-centering vise (2), and put one end of the workpiece (5) against the scale head (8), use The wrench (6) clamps the workpiece (5), takes off the wrench (6), removes the scale (7), completes the installation of the workpiece, and runs the numerical control program to start processing the workpiece.