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Tooth profile finishing method of large modulus hard tooth surface rack

A technology with hard tooth surface and large modulus, which is applied in the field of tooth shape finishing, can solve the problems of not meeting the requirements of batch processing, taking a long time on the machine tool for processing, and low processing efficiency, so as to save the disassembly time and improve the processing efficiency. , the effect of improving production efficiency

Active Publication Date: 2015-09-23
CHINA ERZHONG GRP DEYANG HEAVY IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When the grinding feed rate is slightly large or the cooling liquid is not sufficiently cooled, it is very easy to cause grinding burns
At the same time, the grinding process needs to be equipped with a special grinding machine tool or device. The processing takes a long time on the machine tool, and the processing efficiency is low, which cannot meet the processing requirements of batch parts.

Method used

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  • Tooth profile finishing method of large modulus hard tooth surface rack
  • Tooth profile finishing method of large modulus hard tooth surface rack
  • Tooth profile finishing method of large modulus hard tooth surface rack

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0034] The tooth shape finishing method of the large modulus hardened tooth surface rack is installed on the worktable of the machine tool after surface quenching, and the left tooth slope 701 and the right tooth slope 702 are milled by the track method with the face milling cutter 4; Then the arc surface 801 of the left tooth bottom and the arc surface 802 of the right tooth bottom are milled by the forming method through the ball end milling cutter 1; On the one hand, the above method can effectively improve the processing efficiency, and on the other hand, it can ensure that the surface roughness meets the corresponding requirements. The above-mentioned ball-end milling cutter 1 is preferably a clip-type ball-end milling cutter of Hitachi Japan’s high-strength and high-hardness powerful milling machine, and the model of the cutter body is AB...

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Abstract

The invention discloses method for finish machining of tooth profile of a large-modulus hard-tooth-face rack. The method is high in production efficiency and suitable for batch part production. The method comprises the steps of installing the rack subjected to surface hardening on a working table of a machine tool; firstly using face milling cutter to perform milling to a left tooth oblique plane and a right tooth oblique plane by means of a track method; using a ball end mill to perform milling to the left tooth bottom circular-arc surface and the right tooth bottom circular-arc surface by means of a forming method; using the ball end mill to perform milling to the tooth bottom face by means of the track method. In addition, cutter structures, cutter and machine tool selection, cutter using modes and cutter installing modes are further optimized. Compared with the prior art, the machining efficiency is remarkably improved, and the tooth face roughness meets the requirement.

Description

technical field [0001] The invention relates to a tooth profile finishing method, in particular to a tooth profile finishing method of large modulus hard tooth surface racks in batches. Background technique [0002] The rack is one of the important basic transmission parts in the gear transmission, and its load capacity and service life are an important symbol of the manufacturing technology level of the rack. For large-modulus racks in existing mining equipment and metallurgical equipment such as forging and rolling, the tooth profile accuracy often adopts the national standard (GB1009-88) 8-9 medium-precision grade, and the tooth surface hardness often adopts HB≤350. Medium hardness, tooth surface roughness Ra requirement 3.2 ~ 1.6μm. The milling technology of this kind of large modulus medium hard tooth surface rack is very mature. [0003] In recent years, with the continuous improvement of manufacturing technology, large-scale large-modulus hard-toothed racks have gra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23F19/00B23C5/02B23C5/16
Inventor 刘毅付建平张英军王永成
Owner CHINA ERZHONG GRP DEYANG HEAVY IND
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