Manufacturing method of big-modulus cast steel large gear ring

A manufacturing method and technology for a large ring gear, which are applied in the field of machining, can solve the problems of large processing volume of blanks and tooth profiles, difficulty in controlling the deformation of the large ring gear, and high manufacturing costs, so as to improve the processing efficiency of the tooth profile, reduce the manufacturing cost, Manufacture method convenient and feasible effect

Active Publication Date: 2019-01-25
甘肃酒钢集团西部重工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the manufacture of large-module cast steel girth gears, there are problems such as large amount of rough and tooth profile processing, difficulty in controlling the deformation of the girth gear, and low processing efficiency, resulting in high manufacturing costs

Method used

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  • Manufacturing method of big-modulus cast steel large gear ring
  • Manufacturing method of big-modulus cast steel large gear ring
  • Manufacturing method of big-modulus cast steel large gear ring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of modulus of the present invention is 40mm, and the manufacturing method of the cast steel girth gear that diameter is 5440mm, specifically comprises the following steps:

[0035] Step 1: Use the CAPP system to compile the blank manufacturing process, and through the conventional "modeling→smelting→pouring→cleaning→checking the blank→heat treatment" process to produce a qualified semi-gear blank with casting reinforcement; in order to compensate for the shrinkage of the casting, To prevent shrinkage cavities and porosity defects in castings, set 6 common risers with a size of 450×540×700mm during molding;

[0036] Step 2: Machining the joint surface and the joint hole of the large gear ring on the floor boring machine, the joint surface is left 50mm, the joint hole is left 30mm, and the large gear ring is closed by the reaming hole bolt;

[0037] Step 3: Align the center of the large ring gear and the rotary table on the floor boring machine, use a disc milling ...

Embodiment 2

[0050] A kind of modulus of the present invention is 32mm, and the manufacturing method of the cast steel girth gear that diameter is 4736mm, specifically comprises the following steps:

[0051] Step 1: Use the CAPP system to compile the blank manufacturing process, and produce qualified casting blanks through the conventional "modeling → smelting → pouring → cleaning → inspection blank → heat treatment" process to produce qualified casting semi-gear blanks with casting bars ;In order to compensate the shrinkage of the casting and prevent the casting from shrinkage cavity and shrinkage defects, 6 common risers with a size of 300×450×500mm are set up during molding;

[0052] Step 2: Machining the joint surface and the joint hole of the large gear ring on the floor boring machine, the joint surface is left 40mm, the joint hole is 14mm, and the large gear ring is closed by the reaming hole bolt;

[0053] Step 3: The operation is the same as that in Example 1, and the amount of th...

Embodiment 3

[0063] A kind of modulus of the present invention is 22mm, and the manufacturing method of the cast steel girth gear of 4620mm in diameter specifically comprises the following steps:

[0064] Step 1: Use the CAPP system to compile the blank manufacturing process, and through the conventional "modeling→smelting→pouring→cleaning→checking the blank→heat treatment" process to produce a qualified semi-gear blank with casting reinforcement; in order to compensate for the shrinkage of the casting, To prevent shrinkage cavities and porosity defects in castings, set 5 thermal insulation and heating risers with a size of 450×540×650mm during molding;

[0065] Step 2: Machining the joint surface and the joint hole of the large gear ring on the floor boring machine, the joint surface is left to be 30mm, the joint hole is left to be 20mm, and the large gear ring is closed by the reaming hole bolt;

[0066] Step 3: The operation is the same as that in Example 1, and the amount of the outer ...

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Abstract

The invention discloses a manufacturing method of a big-modulus cast steel large gear ring, and belongs to the technical field of machining. By the method, the problem of large machining amount of a blank and teeth during manufacturing of an existing large gear ring is solved by improving a cast blank and tooth machining process, and by an operation of retaining a tie bar after the large gear ringis manufactured, deformation of the large gear ring during long-time storage, transportation and hoisting is prevented. The manufacturing method is convenient and feasible, by practice verification,on the premise of guaranteeing quality and precision of the large gear ring, the machining efficiency is greatly improved, and the manufacturing cost is reduced. The tooth machining efficiency is improved by 2 times or above, and the manufacturing cost of the large gear ring is reduced by 20% or so. When the large gear ring manufactured by the method of the invention is used for key equipment suchas a ball-miller, a mixing machine and a drying kiln, the equipment runs stably and smoothly, and gear transmission faults are never caused.

Description

technical field [0001] The invention belongs to the technical field of mechanical processing, and in particular relates to a method for manufacturing a large-module cast steel ring gear. Background technique [0002] In recent years, the competition in the machinery manufacturing industry has become more and more fierce. Reducing manufacturing costs and improving processing efficiency will become the core for enterprises to strengthen their competitive advantages. [0003] Gear ring transmission is widely used in cement, metallurgy and other industries. The large ring gear is the main force-bearing transmission part of rotary kiln, mixer, granulator, ball mill and other equipment. The modulus of the large ring gear is ≥20mm, the diameter is generally between 3-6m, and the material is generally ZG200-400, ZG230-450, ZG270-500, ZG310-570 or ZG340-640. In the manufacture of large-modulus cast steel girth gears, there are problems such as a large amount of blank and tooth profi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 程宝军王玉成张燕强寇建昌刘建彪张宏瑞赵金鹏
Owner 甘肃酒钢集团西部重工股份有限公司
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