A kind of cutter head and cutter for machining ball thread

Abstract

The invention discloses a cutter bit for machining ball threads. The cutter bit comprises a body. The body comprises at least one cutting edge (1). The cutting edge (1) comprises a tool nose (2) and two side knife edges (3). The two side knife edges (3) are in bilateral symmetry about a connecting line of the sharp point of the cutting edge (2) and the center point of the body,. The two side knifeedges (3) are provided with cutting protrusions (3.1) correspondingly. The cutting protrusions (3.1) are in an arc shape. The invention further discloses a cutter. The cutter is characterized in thatthe cutter comprises a cutter fixing section (7) and a cutter bit fixing section (8); the cutter fixing section (7) and the cutter bit fixing section (8) are integrally connected; and the cutter bitfixing section (8) is detachably connected to the cutter bit for machining the ball threads. Through the cutter bit for machining the ball threads and the cutter, the production efficiency can be improved, the requirements of ball screw material selection is lowered, the machining loads of grinding are reduced, and the cutter bit is easy to replace.

Description

technical field [0001] The invention relates to the field of processing tools, in particular to a cutter head and cutter for processing ball threads. Background technique [0002] Ball threads generally appear on ball screws. Traditional ball threads are generally produced in two ways. One is the more commonly used cold rolling forming technology. The ball threads of the ball screw are directly formed by cold rolling, and then The two ends of the ball screw are turned or milled by means of heat treatment, such as the patent of publication number CN101224540A. There are many steps in the forming process of a ball screw, and there are strict requirements for the material selection of the ball screw. The different positions of the ball screw are processed by different processes, so that the production cycle of the ball screw is long; another way is to use the lathe to perform the turning process first, and then the grinding process, but the structure of the cutter head of the l...

AI Technical Summary

Problems solved by technology

[0002] Ball threads generally appear on ball screws. Traditional ball threads are generally produced in two ways. One is the more commonly used cold rolling forming technology. The ball threads of the ball screw are directly formed by cold rolling, and then The two ends of the ball screw are turned or milled by means of heat treatment, such as the patent of publication number CN101224540A. There are many steps in the forming process of a ball screw, and there are strict requirements for the material selection of the ball screw. The different positions of the ball screw are processed by different processes, so that the production cycle of the ball screw is long; another way is to use the lathe to perform the turning process first, and then the grinding process, but the structure of the cutter head of the lathe has always been to process the ball screw. One of the difficulties in threading is to ensure the accuracy of ball thread processing, that is, the stability of the tool during turning, and secondly, to ensure the damage of the cutter head during turning, so that the ball threads produced during the turning process will not form differences. Therefore, in the selection of the turning tool head of the ball thread, the welded head is used, and then the head is processed accordingly. In order to ensure the uniformity of the product, the tool should be maintained in time after wear and tear. However, it is often difficult to carry out the production and processing of the same type of ball screw after maintenance, and the cutting tool needs to be replaced, which makes the replacement frequency of the cutting tool very high. Grinding process is performed in large quantities, and the grinding process takes longer. Together with turning process, the production cost of the ball screw is very high, which is not conducive to the mass production of the ball screw.

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