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A component with a new shaft-hole connection method and its preparation method

A connection method and a new type of technology, applied in the direction of bearing components, shafts, shafts and bearings, etc., can solve the problems of high processing cost, abrasive tools and precision limitations, lack of flexibility, etc., to achieve simple processing, ensure strength, and improve connection strength Effect

Active Publication Date: 2020-01-07
济宁勤昌工贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Another example is the Chinese patent (application number 201410596566.5), which is called the structure of the center sleeve of the motorcycle clutch. This method adopts a die-casting process to make an internal spline sleeve integrated with the center sleeve body. The internal spline sleeve is made of alloy steel. High cost, limited by grinding tools and precision, lack of flexibility

Method used

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  • A component with a new shaft-hole connection method and its preparation method
  • A component with a new shaft-hole connection method and its preparation method
  • A component with a new shaft-hole connection method and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, with reference to Figure 2-6 , a component of a new shaft-hole connection method described in this specific embodiment includes a flat shaft 1 welded on the input shaft 3 of the hydraulic gear pump and a flat shaft sleeve 2 welded on the output shaft 4 of the power take-off, the Welding grooves are provided at the docking position of the flat shaft sleeve 2 and the output shaft 4 , and the flat shaft 1 is fixed in the flat shaft sleeve 2 by shrink fitting or pressing.

[0043] The end surface of the input shaft 3 is provided with a groove 5 for inserting the flat shaft 1 to improve the shearing resistance.

[0044] The depth of the groove 5 is 15mm.

[0045] The flat shaft 1 is heated to 80°C for shrink fitting, and the flat shaft sleeve 2 is heated to 130°C for shrink fitting.

[0046] The included angle of the welding groove is 70 degrees, so as to facilitate the welding of both.

[0047] The flat shaft 1 is a flat shaft with tangent planes 6 on both...

Embodiment 2

[0050] Example 2, the preparation method of a component with a new shaft-hole connection method described in this specific implementation mode includes the following steps:

[0051] 1) Cutting: select a round bar, cut a material with a length of 55±2mm from the round bar, and a diameter of 60mm;

[0052] 2) Rough turning: Use ordinary lathe to turn the outer circle, end face and punch positioning holes. The rough turning is carried out twice. When rough turning the outer circle, the rough turning allowance is 0.5mm, the cutting speed is 140m / min, and the feed rate is 0.20mm / r;

[0053] 3) Drilling: use a radial drilling machine, drill a middle hole at the center, and the diameter of the middle hole is 5mm;

[0054] 4) Quenching and tempering treatment: quenching treatment first, and then high-temperature tempering treatment in the temperature range of 620°C to enhance the strength, plasticity and toughness of the component, and the hardness is HRC55;

[0055] 5) Finish turni...

Embodiment 3

[0064] Example 3, the preparation method of a component with a new shaft-hole connection method described in this specific implementation mode includes the following steps:

[0065] 1) Blanking: select a round bar, cut a material with a length of 60±2mm from the round bar, and a diameter of 56mm;

[0066] 2) Rough turning: use ordinary lathe to turn the outer circle, end face and punch positioning holes. The rough turning is carried out twice. When rough turning the outer circle, the rough turning allowance is 0.6mm, the cutting speed is 160m / min, and the feed rate is 0.18mm / r;

[0067] 3) Drilling: use a radial drilling machine, drill a middle hole at the center, and the diameter of the middle hole is 5mm;

[0068] 4) Quenching and tempering treatment: quenching treatment first, and then high-temperature tempering treatment in the temperature range of 600°C to enhance the strength, plasticity and toughness of the component, and the hardness is HRC56;

[0069] 5) Finish turn...

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Abstract

The invention relates to a component of a novel shaft hole connection mode. The component comprises a flat shaft welded to an input shaft of a hydraulic gear pump, and a flat shaft sleeve welded to an output shaft of a power take-off device. A welding groove is formed in the butt-joint position of the flat shaft sleeve and the output shaft. The flat shaft is fixed in the flat shaft sleeve in a hot charging or pressing-in mode. The invention further provides a manufacturing method of the component of the novel shaft hole connection mode. The component of the novel shaft hole connection mode and the manufacturing method of the component have the beneficial effects that 1, the flat shaft sleeve and the flat shaft are matched as a whole, the number of stress faces is only two, the match precision can be guaranteed easily, transferred loads can be divided to the flat shaft and the flat shaft sleeve, and the connection strength can be guaranteed only by guaranteeing the strength of the flat shaft and the flat shaft sleeve; 2, the reliability of shaft hole connection can be completely improved, and the reliability is greatly improved; and 3, the thickness of a nickel plating layer of the matching face of the flat shaft is controlled strictly, the form and position accuracy of assembly is guaranteed, alloy welding rods are welded through groove brazing, and the strength of welded positions is guaranteed.

Description

technical field [0001] The invention relates to a component with a new shaft-hole connection mode and a preparation method thereof, in particular to a component with a new shaft-hole connection mode suitable for a tractor-mounted crane power transmission system and a preparation method thereof. Background technique [0002] Spline is a common matching application of shaft-hole connection in mechanical applications. It is used for power transmission and is widely used in industrial and civil fields such as transportation, machinery manufacturing, and engineering machinery. [0003] Tractor truck-mounted crane is an important engineering equipment in civil engineering construction. Due to the large horsepower of the tractor, and the large and frequent load changes during the working process, and there are many applications in the power transmission system, the shaft-hole connection often occurs after a period of work. Splines and spline holes are worn and broken, resulting in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/00F16C3/02F16C33/04
CPCB23P15/00F16C3/02F16C33/04
Inventor 李志伟王成常爱伟葛建伟
Owner 济宁勤昌工贸有限公司