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Method and apparatus for working a screw rotor, end mill for working , and method of manufacturing a screw compressor

一种加工方法、端铣刀的技术，应用在加工装置,端铣刀领域，能够解决易产生误差、生产、不能螺旋转子等问题，达到提高精度、加工简单的效果

Active Publication Date: 2009-09-02
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the method described in the above-mentioned Patent Document 1, shaving is performed with a tool of a special shape in the finish machining of the side surfaces of the tooth grooves in the machining of the screw rotors, so it is necessary to manufacture the special shape to match the shape of the product. tool
In addition, because of the special shape, errors are likely to occur when setting the coordinates of the cutting edge position of the tool, and corrections and jig adjustments by temporary processing are required.
In addition, since it is a shaving process in which the material to be cut and the tool move synchronously, the relative speed between the material to be cut and the tool becomes the cutting speed, and there is a problem that high speed cannot be expected and machining efficiency cannot be improved.
[0008] In addition, in the processing method like Patent Document 2, special equipment is required, and there is a problem that the production of the screw rotor cannot be performed due to the stoppage of the processing of the processing device.

Method used

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  • Method and apparatus for working a screw rotor, end mill for working , and method of manufacturing a screw compressor
  • Method and apparatus for working a screw rotor, end mill for working , and method of manufacturing a screw compressor
  • Method and apparatus for working a screw rotor, end mill for working , and method of manufacturing a screw compressor

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Experimental program
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Effect test

Embodiment approach 1

[0062] First, according to figure 1 , first explain the compression principle of the single screw compressor. In the single screw compressor, a screw rotor 1 having a plurality of slots 2 and gate rotors 3a, 3b having a plurality of teeth 4 are arranged symmetrically to each other at right angles to the axis. exist figure 1 The case where the helical rotor 1 has six tooth slots 2 and the gate rotors 3 a , 3 b have eleven teeth 4 is illustrated in . A case (not shown) is covered on the outer periphery of the screw rotor 1, and a closed space is formed on the inner diameter of the case by the tooth slots 2 of the screw rotor 1 and the teeth 4 of the gate rotors 3a, 3b. At a certain position of the helical rotor 1, the refrigerant gas is sucked into the cog 2, and the cog 2 is closed by the door rotors 3a, 3b that rotate with the rotation of the helical rotor 1, thereby sealing the refrigerant gas.

[0063] Furthermore, when the screw rotor 1 rotates, the volume of the tooth s...

Embodiment approach 2

[0086] In Embodiment 1, the case where the fourth end mill 27 is used in the tooth groove side surface finishing step is described, and in Embodiment 2, the sixth end mill 50 having a smaller diameter than the first end mill 25 is used as the tool use. The first step is to use the first end mill 25 as a tool to make a certain slit in the depth direction of the helical groove to the desired depth. The second end mill with a smaller diameter than the first end mill is used as a tool. The second step of rough machining the side surface of the spiral tooth groove, and the third step of processing the bottom surface of the spiral tooth groove by using the third end mill having an R shape at the front end as a tool are the same as in the first embodiment. , to avoid repetition, the description is omitted.

[0087] The case where the sixth end mill 50 is used is shown in Figure 21 , Figure 22 middle. Figure 21 is a diagram illustrating the lead and tool position in finishing, ...

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Abstract

A method of improving working of grooves of a screw rotor, in particular, working of grooves side in working efficiency, a working apparatus, a working tool, and a method of manufacturing a screw compressor are provided. A method of controlling rotation of a work and turning of a tool at a time to form a screw tooth space based on a five-axis NC machine, and a special end mill having a cutting edge of a short length and a neck portion provided between the cutting edge and a shank portion to be made thin is used to perform working in grooves side finish working process.

Description

technical field [0001] The present invention relates to a processing method and a processing device for a screw rotor incorporated in a screw compressor, and more particularly, to a processing method and a processing device for a screw rotor capable of high-precision and high-efficiency processing of tooth grooves, and an end mill used therefor Knife and screw compressor manufacturing method. Background technique [0002] Conventionally, it is known that the cogging of the screw rotor incorporated in the single screw compressor is to set the material to be cut on the first rotation axis, and set the tool on the second rotation axis perpendicular to the first rotation axis. On the other hand, these two shafts are rotated synchronously, and furthermore, while the processing is progressing, the radius of rotation of the tool set on the second rotating shaft is increased by a small amount, thereby forming the shape of the tooth groove of the screw rotor (such as , refer to Pate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23F15/08B23F21/12B23C3/34B23P15/00
CPCB23F15/00B23F15/08Y10T29/1194Y10T29/49476Y10T29/49469Y10T74/19953Y10T409/303808Y10T29/49245
Inventor 中筋智明宫本优作松本泰典川上铁治
Owner MITSUBISHI ELECTRIC CORP
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