CN205184370U - Machine tool machining anchor clamps of pole class work piece - Google Patents

Abstract

The utility model relates to a machine tool processing fixture for a round rod workpiece, which comprises a cylindrical body, a connecting column extending from one end of the body, a positioning hole on the body, and a threaded hole connected with the positioning hole; the connecting column There is an exhaust hole in the interior that communicates with the positioning hole, and there is an escape groove on the inner wall of the positioning hole; bolts are connected in the threaded hole. In the machine tool processing fixture for round rod workpieces of the utility model, the connecting column is used to connect with the three-jaw chuck of the machine tool, the parts to be processed are placed in the positioning hole, and the axial reference plane and radial reference plane of the positioning hole are used for fixing , Fix the part to be processed in the positioning hole through the threaded hole on the side and the bolt for locking. The arrangement of vent holes and avoidance grooves facilitates the disassembly of the product. The setting of the positioning hole can help the precise positioning of the parts to be processed.

Description

Machine Tool Fixtures for Round Bar Workpieces

technical field

The utility model relates to tooling for workpiece processing, in particular to a processing fixture for round rod workpieces.

Background technique

When processing the end face of round bar parts, the clamping method determines the quality and efficiency of processing. It is difficult to find the center of the workpiece with the general method, and the repetitive positioning accuracy of the clamping is relatively low. It is difficult to ensure the product concentricity and product hole position. Requirements, and low efficiency, not suitable for mass production.

Utility model content

The purpose of this utility model is to overcome the deficiencies of the prior art, and provide a machine tool processing fixture for high-precision positioning workpieces of round rods, which can effectively improve the repeated positioning accuracy of round rod workpieces in the process of machine tool processing, and has the advantages of simple structure, easy installation Clip convenient features.

In order to achieve the purpose of the above-mentioned utility model, a machine tool processing fixture for round rod workpieces is provided, which includes a cylindrical body, a connecting column extending from one end of the body, a positioning hole on the body, and a screw thread passing through the positioning hole There is a vent hole in the connecting column that communicates with the positioning hole, and there is an avoidance groove on the inner wall of the positioning hole; bolts are connected in the threaded hole.

Preferably, the inner end surface of the positioning hole is the axial reference plane of the processed part, and the inner peripheral surface of the positioning hole is the radial reference plane of the processed part.

Preferably, the axis of the threaded hole is perpendicular to the axis of the positioning hole.

Preferably, the threaded hole runs through the relief groove.

Preferably, the section of the escape groove is arc-shaped.

Preferably, there are two threaded holes on the same side on the body.

In the machine tool processing fixture for round rod workpieces of the utility model, the connecting column is used to connect with the three-jaw chuck of the machine tool, the parts to be processed are placed in the positioning hole, and the axial reference plane and radial reference plane of the positioning hole are used for fixing , Fix the part to be processed in the positioning hole through the threaded hole on the side and the bolt for locking. The arrangement of vent holes and avoidance grooves facilitates the disassembly of the product. The setting of the positioning holes can help the precise positioning of the parts to be processed.

The beneficial effects of the utility model are: (1) the repeated installation and positioning of the workpiece is accurate, and the production efficiency is improved; (2) the structure is simple, the manufacturing cost is low, and the use is convenient.

Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the machine tool processing fixture of the utility model round rod class workpiece;

Fig. 2 is the front view of the machine tool processing fixture of the utility model round bar workpiece;

in:

1-connecting column 2-exhaust hole 3-body

4-positioning hole 5-threaded hole 6-avoidance groove

7-Bolt

detailed description

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

According to Fig. 1 and Fig. 2, a kind of machine tool processing fixture for round rod workpieces includes a cylindrical body 3, one end of which is extended from a connecting column 1, and positioning holes 4 are arranged on said body 3, and A double threaded hole 5 passing through the positioning hole 4 , the axis of the threaded hole 5 is perpendicular to the axial direction of the positioning hole 4 . There is an exhaust hole 2 in the connecting column 1 that communicates with the positioning hole 4, and there is an arc-shaped avoidance groove 6 on the inner wall of the positioning hole 4; a fastening bolt 7 is connected in the threaded hole 5. The inner end surface of the positioning hole 4 is the axial reference plane of the machined part, and the inner peripheral surface of the positioning hole 4 is the radial reference plane of the machined part. The threaded hole 5 runs through the escape groove.

The main body 3 has side fixing double threaded holes 5 and locking bolts 7. The said main body 3 includes connecting columns 1 connected in sequence from left to right, side double threaded holes 5, arc-shaped hollow grooves 6 and high-precision The positioning hole 4 is used to fix the workpiece to be processed in the positioning hole of the body through the locking bolt 7 . The diameter of the high-precision positioning hole 4 is adapted to the outer diameter of the workpiece to be processed. The depth of the high-precision positioning hole 4 is slightly lower than the length of the workpiece to be processed. The bottom surface of the high-precision positioning hole 4 is an axial positioning surface, which is in close contact with one end surface of the workpiece to be processed. The inner peripheral surface of the high-precision positioning hole 4 is a radial positioning surface, which is in close contact with the peripheral surface of the workpiece to be processed. There is an exhaust hole 2 at the bottom of the high-precision positioning hole, and an arc-shaped avoidance groove 6 is arranged on the side, which is beneficial to the loading and unloading of the product.

During processing, the connecting column 1 is connected with the three-jaw chuck of the machine tool, and the workpiece to be processed is locked in the high-precision positioning hole 4 through the side double threaded hole 5 and the locking bolt 7. At the same time, the bottom surface of the high-precision positioning hole 4 is The axial positioning surface is in close contact with one end surface of the workpiece to be processed, and the inner peripheral surface of the high-precision positioning hole 4 is a radial positioning surface, which is in close contact with the peripheral surface of the workpiece to be processed, and then the end surface is processed.

The preferred embodiments of the utility model creation have been specifically described above, but the utility model creation is not limited to the described embodiments, and those skilled in the art can also make Various equivalent modifications or replacements are included within the scope defined by the claims of the present application.

Claims (6)

1. A machine tool processing fixture for a round bar workpiece, comprising a cylindrical body, one end of the body extends a connecting column, and it is characterized in that, a positioning hole is arranged on the described body, and a threaded hole connected with the positioning hole is also provided; There is an exhaust hole in the connecting column that communicates with the positioning hole, and there is an escape groove on the inner wall of the positioning hole; bolts are connected in the threaded hole. 2. The machine tool processing fixture for round bar workpieces according to claim 1, wherein the inner end surface of the positioning hole is the axial reference plane of the machined part, and the inner peripheral surface of the positioning hole is the diameter of the machined part. to the base plane. 3 . The machining fixture for a round bar workpiece according to claim 1 , wherein the axis of the threaded hole is perpendicular to the axial direction of the positioning hole. 4 . 4 . The machining fixture for machine tools of round bar workpieces according to claim 3 , wherein the threaded holes pass through the evacuation grooves. 5 . 5 . The machine tool processing fixture for round bar workpieces according to claim 4 , characterized in that, the section of the avoidance groove is arc-shaped. 5 . 6. The machining fixture for round bar workpieces according to any one of claims 1 to 5, characterized in that there are two threaded holes on the same side on the body.