CN203993192U - A kind of jig of circumferential registration - Google Patents

Abstract

The utility model relates to a machine tool fixture for circumferential positioning, which comprises a T-shaped block, an upper column, a lower column, a positioning plate, a positioning pin, bolts and nuts; the T-shaped block can be arranged in a T-shaped slot of a workbench; Axial through holes are provided in the middle of the upper column and the lower column, and the upper column and the lower column are screwed together; the small end of the positioning plate is provided with a positioning hole, and the large end is provided with an adjustment through hole, placed on The upper end face of the column; the bolts pass through the adjustment through hole of the positioning plate, the axial through hole in the middle of the upper column, and the axial through hole in the middle of the lower column in turn, and the lower end of the bolt is threaded with the T-shaped block. The upper end of the positioning pin is locked by a nut; the lower end of the positioning pin is closely matched with the positioning hole at the small end of the positioning plate; the circumferential positioning machine tool fixture of the utility model has a simple and practical structure, is convenient to manufacture, and is easy to operate.

Description

A Circumferential Positioning Machine Fixture

technical field

The utility model relates to a machine tool fixture, in particular to a machine tool fixture with simple structure, convenient manufacture and easy operation for circumferential positioning.

Background technique

A chuck is a mechanical device used to clamp a workpiece on a machine tool. A machine tool accessory that clamps and positions workpieces by using the radial movement of movable jaws evenly distributed on the chuck body. Chucks are usually installed on lathes, milling machines, machining centers, cylindrical grinders, and internal grinders. Chucks generally consist of three parts: chuck body, movable jaws, and jaw driving mechanism. When a wrench is used to rotate through the square hole, the claw driving mechanism drives the movable claw to displace radially at the same time, realizing automatic centering and clamping, and is widely used for clamping disc-shaped workpieces.

When the chuck is used for clamping, only the center positioning of the workpiece is made. When the front and back of the processed disc-shaped workpiece need to be processed, and the structure of the front and back of the workpiece has angular position requirements, the circumferential direction positioning is also required to ensure that the workpiece The machining accuracy meets the requirements of the parts drawings. In general, processing companies use the processed through holes on the front of the workpiece (or increase the process through holes) as the positioning holes on the back of the workpiece to make special fixtures for the parts, which is not only time-consuming and expensive, but also expensive. Or small batches, the cost is too high to accept.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a machine tool fixture with simple structure, convenient manufacture and easy operation for circumferential positioning.

In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: a machine tool fixture for circumferential positioning, including a T-shaped block, an upper column, a lower column, a positioning plate, a positioning pin, a bolt and a nut; the T-shaped block can be set In the T-shaped slot of the workbench; the middle of the upper column and the lower column is provided with an axial through hole, and the upper column and the lower column are threaded; the small end of the positioning plate is provided with a positioning hole, and the large The end is provided with an adjustment through hole, which is placed on the upper end surface of the upper column; the bolts pass through the adjustment through hole of the positioning plate, the axial through hole in the middle of the upper column, and the axial through hole in the middle of the lower column in turn. The lower end of the bolt It is threadedly connected with the T-shaped block, and the upper end of the bolt is locked by a nut; the lower end of the positioning pin is closely matched with the positioning hole at the small end of the positioning plate.

Preferably, the upper column and the lower column are connected by coarse threads.

Preferably, the adjustment through hole is a through bar-shaped groove.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art:

The circumferential positioning machine tool fixture of the utility model scheme, according to the clamping position of the workpiece, rotate the upper column to adjust the height of the positioning plate, and use the strip groove to adjust the protruding position of the small end of the positioning plate, so that the positioning hole at the small end of the positioning plate is aligned with the workpiece. After locating the through holes concentrically, insert the matching locating pin, loosen the jaws and turn over the workpiece, at this time, use the locating pin to position and clamp, which can improve the work efficiency and the machining accuracy of the workpiece. Its design structure is simple and practical, and it is convenient to manufacture, and easy to operate.

Description of drawings

Below in conjunction with accompanying drawing, technical scheme of the utility model is further described:

Accompanying drawing 1 is the perspective view of the machine tool fixture of circumferential positioning described in the utility model;

Accompanying drawing 2 is the exploded diagram of the machine tool fixture of circumferential positioning described in the utility model;

Accompanying drawing 3 is the three-dimensional view of an embodiment of the machine tool fixture of circumferential positioning described in the utility model;

Among them: 1. Workbench; 2. Chuck; 3. Workpiece; 4. Machine fixture; 5. T-shaped block; 6. Lower column; 7. Upper column; 8. Nut; 9. Bolt; 10. Positioning plate; 11. Locating pin.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is described in further detail.

As shown in Figure 1-3, the machine tool fixture 4 of circumferential positioning described in the utility model comprises T block 5, upper column 7, lower column 6, positioning plate 10, positioning pin 11, bolt 9 and nut 8; The T-shaped block 5 can be set in the T-shaped groove of the workbench 1; the middle of the upper column 7 and the lower column 6 is provided with an axial through hole, and the upper column 7 and the lower column 6 are connected by coarse threads, To facilitate the adjustment of the height of the positioning plate 10; the small end of the positioning plate 10 is provided with a positioning hole, and the large end is provided with an adjustment through hole, which is placed on the upper end surface of the upper column 7; the bolt 9 runs through the adjustment of the positioning plate 10 in turn. Through hole, the axial through hole in the middle of the upper column 7, the axial through hole in the middle of the lower column 6, the lower end of the bolt 9 is threaded with the T-shaped block 5, and the upper end of the bolt 9 is locked by the nut 8; The lower end of the positioning pin 11 is closely matched with the positioning hole at the small end of the positioning plate 10; in the positioning hole.

As shown in Figure 3, when a kind of circumferentially positioned machine tool fixture 4 described in the utility model is used, a chuck 2 is arranged on the workbench 1; the workpiece 3 is installed on the jaws of the chuck 2; The front of the workpiece 3; the front of the workpiece 3 is provided with a positioning through hole; the machine tool fixture 4 is installed, and according to the position height of the workpiece 3 clamping, the upper column 7 is rotated to adjust the height of the positioning plate 10, and the positioning of the small end of the positioning plate 10 The hole is concentric with the positioning through hole on the front of the workpiece 3, insert the positioning pin 11, insert the bolt 9, and lock the nut 8; then loosen the claws, remove the workpiece 3, turn it over and face down, insert the positioning through hole of the workpiece 3 into the positioning pin 11. After clamping the workpiece 3, the reverse side of the workpiece 3 can be processed.

Due to the application of the above-mentioned technical solution, the utility model has the following advantages compared with the prior art:

The circumferential positioning machine tool fixture of the utility model scheme, according to the clamping position of the workpiece, rotate the upper column to adjust the height of the positioning plate, and use the strip groove to adjust the protruding position of the small end of the positioning plate, so that the positioning hole at the small end of the positioning plate is aligned with the workpiece. After locating the through holes concentrically, insert the matching locating pin, loosen the jaws and turn over the workpiece, at this time, use the locating pin to position and clamp, which can improve the work efficiency and the machining accuracy of the workpiece. Its design structure is simple and practical, and it is convenient to manufacture, and easy to operate.

The above are only specific application examples of the utility model, and do not constitute any limitation to the protection scope of the utility model. All technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the utility model.

Claims (3)

1. A machine tool fixture for circumferential positioning, characterized in that: it comprises a T-block, an upper column, a lower column, a positioning plate, a positioning pin, a bolt and a nut; the T-block can be arranged in the T-groove of the workbench ; The middle of the upper column and the lower column is provided with an axial through hole, and the upper column and the lower column are threaded; the small end of the positioning plate is provided with a positioning hole, and the large end is provided with an adjustment through hole. on the upper end surface of the upper column; the bolts pass through the adjustment through hole of the positioning plate, the axial through hole in the middle of the upper column, and the axial through hole in the middle of the lower column in turn, and the lower end of the bolt is threaded with the T-shaped block. The upper end of the bolt is locked by a nut; the lower end of the positioning pin is tightly matched with the positioning hole at the small end of the positioning plate. 2. The machine tool fixture for circumferential positioning according to claim 1, characterized in that: the upper column and the lower column are connected by coarse threads. 3. The circumferential positioning machine tool fixture according to claim 1 or 2, characterized in that: the adjustment through hole is a through bar-shaped groove.