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Power output shaft of tractor and machining method of shaft

A technology of power output shaft and processing method, which is applied in the field of mechanical equipment, can solve the problems of increased operation cost, long replacement cycle, high cost of power output shaft, etc., and achieve the effects of cost reduction, improvement of utilization efficiency, and reduction of repair cycle

Pending Publication Date: 2017-06-20
HEILONGJIANG AGRI MACHINERY REPAIR INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The cost of the PTO shaft of the American Case 210 tractor is high. At present, the cost of replacing the PTO shaft of the American Case 210 tractor is very high, which increases the operating cost, and the replacement cycle is long, which affects the normal use of the tractor.

Method used

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  • Power output shaft of tractor and machining method of shaft
  • Power output shaft of tractor and machining method of shaft
  • Power output shaft of tractor and machining method of shaft

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: The shaft body 1 after rough turning is subjected to overall quenching and tempering treatment, the quenching heating time is 1.5h, the quenching temperature is 850°C, and then the oil is cooled to 230°C, and then high-temperature tempering treatment is performed, and the high-temperature tempering temperature is 560°C ℃, the high-temperature tempering time is 2.5-3 hours, after high-temperature tempering, carry out normal-temperature oil cooling to room temperature, so that the surface hardness of the shaft body reaches HBS270-280;

[0023] ③Finish turning process, except for the dense tooth spline part 1-1 of the head of the shaft body 1, the rest are all processed and formed;

[0024] ④ Part of the dense tooth spline 1-1 at the head of the shaft body 1 is treated with high-frequency 80kw partial annealing, the processing frequency is 10000Hz, the heating time is 9-11min, the heating temperature is 600-800°C, and the annealing temperature is 600-800°C , the...

Embodiment 2

[0025] Example 2: The head part of the shaft body 1, the dense tooth spline 1-1, is treated with high-frequency 80kw local annealing, the processing frequency is 10000Hz, the heating time is 10min, the heating temperature is 700°C, the annealing temperature is 700°C, and the annealing time is 700°C. It is 10min, then extruded with the molding die;

[0026] ⑤ After the machining of the shaft body 1 is completed, the whole body is quenched. The quenching heating time is 1-2 hours, and the quenching temperature is 800-900 ° C. Then, it is cooled to room temperature with normal temperature oil, so that the surface hardness of the shaft body 1 reaches HRC50-54;

Embodiment 3

[0027] Example 3: After the shaft body 1 is machined, it is quenched as a whole. The quenching heating time is 1.5 hours, and the quenching temperature is 850°C. Then, it is cooled to room temperature with normal temperature oil, so that the surface hardness of the shaft body 1 reaches HRC50-54;

[0028] ⑥ Shaft body 1 is subjected to artificial 48h aging treatment at a temperature of 150-250°C to remove surface stress.

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Abstract

The invention provides a power output shaft of a tractor and a machining method of the shaft, and belongs to the technical field of mechanical devices. The invention provides a low-cost power output shaft of the tractor and the machining method of the shaft. The power output shaft comprises a shaft body. The shaft body is made of 42CrMo structural alloy steel. The machining method of the power output shaft of the tractor includes the following steps that overall quenching and tempering are conducted on the roughly-turned shaft body 1, the quenching heating time ranges from 1 h to 2 h, the quenching temperature ranges from 800 DEG C to 900 DEG C, then, oil cooling is conducted till the temperature ranges from 220 DEG C to 240 DEG C, then, high-temperature tempering is conducted, the high-temperature tempering temperature ranges from 500 DEG C to 600 DEG C, the high-temperature tempering time ranges from 2.5 h to 3 h, normal-temperature oil cooling is conducted after high-temperature tempering till the temperature is lowered to the room temperature, and the surface hardness of the shaft body 1 can reach HBS270 to HBS280; and fourthly, 80 kw local annealing treatment is adopted for a dense-tooth spline part on the head portion of the shaft body, the processing frequency is 10000 Hz, the heating time ranges from 9 min to 11 min, the heating temperature ranges from 600 DEG C to 800 DEG C, the annealing time ranges from 600 DEG C to 800 DEG C, the annealing time ranges from 9 min to 11 min, and then extrusion forming is conducted through a formed mold. The power output shaft and the machining method are low in cost.

Description

technical field [0001] The invention belongs to the technical field of mechanical equipment, in particular to a tractor power output shaft. Background technique [0002] The power output shaft of the tractor is an important component of the tractor's work. It is an important transmission part for the tractor to transmit power to the agricultural implements. The power output shaft of the tractor is also a working vulnerable part. [0003] The PTO shaft of the American Case 210 tractor is expensive. At present, the cost of replacing the PTO shaft of the American Case 210 tractor is very high, which increases the operating cost, and the replacement cycle is long, which affects the normal use of the tractor. Contents of the invention [0004] Aiming at the above-mentioned problems in the prior art, the present invention provides a low-cost tractor power output shaft and a processing method for the shaft. [0005] The technical solution adopted by the present invention is: the...

Claims

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Application Information

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IPC IPC(8): F16C3/02B60K25/00C21D9/28C21D1/18C21D1/26
CPCF16C3/02C21D1/18C21D1/26C21D9/28B60K25/00F16C2223/10F16C2220/62F16C2204/46F16C2204/44F16C2326/06
Inventor 傅东兴王军邹德臣张金龙于友年崔佳鹏刘伟
Owner HEILONGJIANG AGRI MACHINERY REPAIR INST
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