Production process for engine flywheel

A production process and engine technology, applied in the field of the production process of the engine flywheel, can solve the problems of high production costs, complex process routes, and large energy consumption, saving labor and energy, good workshop environment, and high material utilization. Effect

Inactive Publication Date: 2015-06-10
WUHU DONGGUANG DAHUA MACHINERY MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The forging process adopted in this way has complex process routes, extremely low production efficiency, and high energy consumption; the flywheel disc needs to use a large number of precision equipment such as CNC centers, machining centers, and digital milling machines for machining products, and the process is cumbersome and the processing costs are high. The production cost of the product has remained high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A production process for an engine flywheel, comprising the following steps:

[0023] 1) Production of flexible discs, blank turning processing, and lathing out of the flexible discs. The flexible discs are punched with mounting holes and riveting holes, and the mounting holes and riveting holes are rounded to remove surface burrs;

[0024] 2) Production of ring gears;

[0025] 3) Process the teeth on the outer side of the ring gear by the hobbing machine, the speed of the hobbing machine is 80r / min, and the processing time is 5min;

[0026] 4) Assemble the flexible disk and the ring gear by hot pressing, heat the ring gear at 280°C for 30 minutes, take it out, heat press it onto the flexible disk by the press machine, cool it naturally, and carry out the assembly and pinning process;

[0027] 5) Inspection process. The inspection process includes dynamic balance inspection and routine inspection. The dynamic balance inspection ensures the balance of the entire flywhee...

Embodiment 2

[0031] The different process steps from Example 1 are that the speed of the gear hobbing machine is 0 r / min, and the processing time is 3 minutes; the ring gear is heated at 250° C. for 45 minutes.

Embodiment 3

[0033] The different process steps from Example 1 are that the speed of the gear hobbing machine is 85r / min, and the processing time is 4min; the ring gear is heated at 265°C for 37min.

[0034] Since the flywheel disc is produced by stamping technology, the process is simpler and more reshaped, and the precision of the parts can be fully guaranteed. A lot of labor and energy are saved, and the production cost of the product is greatly reduced. The butt welding process is adopted to produce the ring gear blank, the blank production efficiency is high, and the workshop environment is good. Low material consumption and high material utilization. 45# cold-drawn round steel is selected, with high dimensional accuracy, and the machining allowance is only 1mm to ensure the accuracy of the parts. In addition, because the signal teeth are half-open teeth, the teeth can be punched first and then formed in the process, which can effectively improve the production efficiency and the pr...

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PUM

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Abstract

The invention discloses a production process for an engine flywheel. The production process is characterized by comprising the following steps: (1) producing a flexible disc; (2) producing a gear ring; (3) machining a mesh gear on an outer side of the gear ring through a gear hobbing machine; (4) hotly pressing and assembling the flexible disc and the gear ring; (5) checking; (6) cleaning; (7) finally checking. Therefore, the quality of a flywheel assembly is greatly improved, production steps are reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the field of flywheel manufacturing, in particular to a production process of an engine flywheel. Background technique [0002] The flywheel is the key starting part of the automobile engine. It is generally a thick disc. Its weight and balance performance seriously affect the performance of the engine. Therefore, it has certain weight requirements and certain dynamic balance requirements. With the improvement of automobile engine performance requirements, the requirements for flywheel dynamic balance also increase accordingly. [0003] The traditional flywheel assembly consists of a flywheel disc, a flywheel ring gear, and a triangular support plate. The flywheel ring gear is shrunk onto the flywheel disc to form a flywheel tray assembly. The flywheel disc has rectangular teeth for transmitting speed signals. The flywheel disc Connected with the engine crankshaft, the torque is transmitted to the triangular support pad, and t...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/14
Inventor 谷生金
Owner WUHU DONGGUANG DAHUA MACHINERY MFG
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