Workpiece hollow clamping device for machine tool

Abstract

The hollow workpiece clamping device for the machine tool comprises a base and a coping assembly connected to one side of the base, a sliding groove is formed in the end face, close to the coping assembly, of the base, a movable top claw is connected into the sliding groove in a sliding mode, one end of the movable top claw is connected with an oil cylinder connected to the base, and the other end of the movable top claw is connected with an oil cylinder. The telescopic end of the oil cylinder penetrates through the sliding groove and then is connected with the movable top claw. The coping assembly comprises a mounting seat connected with the base, a pressing plate is connected to the top of the mounting seat, a machining hole is formed in the center of the pressing plate, four pressing nails are arranged on the outer side of the end, close to the movable top claw, of the machining hole, and the pressing nails are connected to the pressing plate. According to the utility model, the oil cylinder is used for pushing the movable jacking claw to jack a workpiece on the four pressing nails, and the periphery and the central position of the workpiece are exposed, so that direct processing is facilitated, the workpiece does not need to be dismounted and mounted in different directions, the time is greatly saved, the working efficiency is improved, the positions of the pressing nails can be changed along with the size of the workpiece, and the working efficiency is improved. The operation is very convenient.

Description

Technical Field

[0001] The utility model relates to the field of workpiece clamping mechanisms, in particular to a hollow workpiece clamping device for machine tools. Background Art

[0002] Machine tools refer to machines used to manufacture machines, also known as machine tools or machine tools, and are usually referred to as machine tools. They are generally divided into metal cutting machine tools, forging machine tools, and woodworking machine tools. There are many ways to process mechanical parts in modern machinery manufacturing: in addition to cutting, there are also casting, forging, welding, stamping, extrusion, etc. However, all parts with high precision requirements and fine surface roughness requirements generally need to be processed on machine tools by cutting methods.

[0003] When a machine tool processes a product, it needs to clamp the workpiece to be processed by a fixture. However, the existing clamping mechanisms can only clamp the periphery to process the center of the workpiece, or clamp the two sides to process the outer wall of the workpiece. If the center and periphery of the workpiece need to be processed, the clamping mechanism needs to be replaced or the workpiece needs to be removed and changed, which wastes time, has low processing efficiency, and is very inconvenient. Utility Model Content

[0004] The utility model aims to provide a hollow clamping device for machine tool workpieces to solve the above problems.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] The utility model discloses a hollow clamping device for a machine tool workpiece, comprising a base and a pressure top assembly connected to one side of the base, a slide groove is provided on an end surface of the base close to the pressure top assembly, a movable top claw is slidably connected in the slide groove, an end of the movable top claw away from the pressure top assembly is connected to a cylinder, the cylinder is fixed to the bottom of the base, and the telescopic end of the cylinder passes through the slide groove and is connected to the movable top claw; the pressure top assembly comprises a mounting seat connected to the base, a vertically arranged pressure plate is connected to the top of the mounting seat, a machining hole is opened at the center of the pressure plate, four pressure nails are provided on the outer side of one end of the machining hole close to the movable top claw, and the pressure nails are connected to the pressure plate.

[0007] Furthermore, the base is connected to the pressing plate via a connecting plate.

[0008] Furthermore, a slide rail is provided in the slide groove, a slide hole is provided on the outer wall of the movable top claw, and the movable top claw is slidably connected to the slide rail through the slide hole.

[0009] Furthermore, the pressing plate is provided with four strip-shaped holes, and the angle between two adjacent strip-shaped holes is 90°, and the pressing pins are installed in the strip-shaped holes.

[0010] Furthermore, anti-slip rubber pads are provided on the end surfaces of the movable top claw and the pressing nail close to the workpiece.

[0011] Compared with the prior art, the beneficial technical effects of the utility model are:

[0012] The utility model utilizes an oil cylinder to push a movable top claw to push a workpiece onto four pressing pins, exposing the periphery and center position of the workpiece, which is convenient for direct processing and does not require the workpiece to be disassembled and re-positioned for reinstallation, greatly saving time and improving work efficiency. Moreover, the position of the pressing pins can be changed according to the size of the workpiece, which is very convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 This is a cross-sectional view of the hollow clamping device for machine tools of the utility model;

[0015] Figure 2 It is a side view of the hollow clamping device for workpieces used in machine tools of the utility model;

[0016] Explanation of the reference numerals in the accompanying drawings: 1. base; 2. slide groove; 3. movable top claw; 4. oil cylinder; 5. mounting seat; 6. pressure plate; 7. processing hole; 8. pressure pin; 9. connecting plate; 10. slide rail; 11. slide hole; 12. strip hole. DETAILED DESCRIPTION

[0017] like Figure 1-2 As shown, a hollow clamping device for a machine tool workpiece includes a base 1 and a top pressing assembly connected to one side of the base 1.

[0018] A slide groove 2 is provided on one end surface of the base 1 close to the top pressing assembly, and a movable top claw 3 is slidably connected in the slide groove 2. A slide rail 10 is provided in the slide groove 2, and a slide hole 11 is opened on the outer wall of the movable top claw 3. The movable top claw 3 is slidably connected to the slide rail 10 through the slide hole 11.

[0019] The end of the movable top claw 3 away from the pressure top assembly is connected to the cylinder 4, and the cylinder 4 is fixed at the bottom of the base 1. The telescopic end of the cylinder 4 passes through the slide groove 2 and is connected to the movable top claw 3; the pressure top assembly includes a mounting seat 5 connected to the base 1, and a vertically arranged pressing plate 6 is connected to the top of the mounting seat 5. A processing hole 7 is opened at the center position of the pressing plate 6, and four pressing nails 8 are arranged on the outer side of the end of the processing hole 7 close to the movable top claw 3. Four strip holes 12 are opened on the pressing plate 6, and the angle between two adjacent strip holes 12 is 90°, and the pressing nail 8 is installed in the strip hole 12.

[0020] The base 1 is connected to the pressing plate 6 via a connecting plate 9 .

[0021] The movable top claw 3 and the pressing nail 8 are both provided with anti-skid rubber pads on their end surfaces close to the workpiece.

[0022] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A hollow clamping device for a machine tool workpiece, characterized in that: The invention comprises a base (1) and a top pressing assembly connected to one side of the base (1); a slide groove (2) is provided on an end surface of the base (1) close to the top pressing assembly; a movable top claw (3) is slidably connected in the slide groove (2); an end of the movable top claw (3) away from the top pressing assembly is connected to an oil cylinder (4); the oil cylinder (4) is fixed to the bottom of the base (1); a telescopic end of the oil cylinder (4) passes through the slide groove (2) and is connected to the movable top claw (3); the top pressing assembly comprises a mounting seat (5) connected to the base (1); a vertically arranged pressing plate (6) is connected to the top of the mounting seat (5); a processing hole (7) is opened at the center of the pressing plate (6); four pressing nails (8) are provided on the outer side of the end of the processing hole (7) close to the movable top claw (3); the pressing nails (8) are connected to the pressing plate (6).

2. The hollow clamping device for machine tool workpieces according to claim 1, characterized in that: The base (1) is connected to the pressing plate (6) via a connecting plate (9).

3. The hollow clamping device for machine tool workpieces according to claim 1, characterized in that: A slide rail (10) is arranged in the slide groove (2), a slide hole (11) is opened on the outer wall of the movable top claw (3), and the movable top claw (3) is slidably connected to the slide rail (10) through the slide hole (11).

4. The hollow clamping device for machine tool workpieces according to claim 1, characterized in that: The pressing plate (6) is provided with four strip-shaped holes (12), and the angle between two adjacent strip-shaped holes (12) is 90°. The pressing pins (8) are installed in the strip-shaped holes (12).

5. The hollow clamping device for machine tool workpieces according to claim 1, characterized in that: The movable top claw (3) and the pressing nail (8) are both provided with anti-slip rubber pads on their end surfaces close to the workpiece.

Images