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Grinding process for inner ring of knuckle bearing

A joint bearing and inner ring technology, which is applied in the direction of manufacturing tools, metal processing equipment, casting molding equipment, etc., can solve problems such as large gaps, loss of lubrication ability of liners, and seizure of related mechanisms, so as to achieve short processing cycle and improved Working conditions and the effect of improving processing efficiency

Pending Publication Date: 2022-07-08
江苏博涛智能热工股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fabric liner self-lubricating joint bearings have the following failure modes: wear and bearing fracture, wear makes the gap between the inner and outer rings too large, the liner loses its normal lubrication ability, and in severe cases, it will cause the relevant mechanisms to occlude and jam

Method used

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  • Grinding process for inner ring of knuckle bearing
  • Grinding process for inner ring of knuckle bearing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In this embodiment, the grinding process of the inner ring of the spherical plain bearing with the characteristics of metal bearing and self-lubricating characteristics is as follows:

[0043] (1) Model making: the molding material is selected from polystyrene foam board or expandable polystyrene resin beads, and the density is 10g / dm 3 ; Drill a hole 0.2mm smaller than the diameter of the graphite rod on the lost foam model, and install a graphite rod 2mm longer than the wall thickness of the pattern;

[0044] (2) After the graphite rod is installed, the special lost foam coating for copper alloy is painted, the thickness of the coating is controlled at 0.5mm, and the drying room is dried at below 50°C;

[0045] (3) Connect the model after drying with EPS foam runner;

[0046] (4) Put the assembled model in the lost foam sand box, and evenly add dry sand to vibrate and tighten; cover the upper part of the sand box with plastic cloth to seal, vacuumize negative pressur...

Embodiment 2

[0050] In this embodiment, the grinding process of the inner ring of the spherical plain bearing with the characteristics of metal bearing and self-lubricating characteristics is as follows:

[0051] (1) Model making: the molding material selects polystyrene foam board or expandable polystyrene resin beads, the density is 18 g / dm 3 ; Drill a hole 0.2mm smaller than the diameter of the graphite rod on the lost foam model, and install a graphite rod 1.5mm longer than the wall thickness of the pattern;

[0052] (2) After the graphite rod is installed, the special lost foam coating for copper alloy is painted, the thickness of the coating is controlled at 0.8mm, and the drying room is dried at below 50°C;

[0053] (3) Connect the model after drying with EPS foam runner;

[0054] (4) Put the assembled model in the lost foam sand box, add dry sand evenly to vibrate and tighten; cover the upper part of the sand box with plastic cloth to seal, vacuumize negative pressure, and pour in...

Embodiment 3

[0058] In this embodiment, the grinding process of the inner ring of the spherical plain bearing with the characteristics of metal bearing and self-lubricating characteristics is as follows:

[0059](1) Model making: select polystyrene foam board or expandable polystyrene resin beads as the molding material, the density is 22 g / dm 3 ; Drill a hole 0.2mm smaller than the diameter of the graphite rod on the lost foam model, and install a graphite rod 1mm longer than the wall thickness of the pattern;

[0060] (2) After the graphite rod is installed, the special lost foam coating for copper alloy is painted, and the thickness of the coating is controlled at 1.0mm, and the drying room is dried at below 50°C;

[0061] (3) Connect the model after drying with EPS foam runner;

[0062] (4) Put the assembled model in the lost foam sand box, add dry sand evenly to vibrate and tighten; cover the upper part of the sand box with plastic cloth to seal, vacuumize negative pressure, and pour...

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Abstract

The invention discloses a grinding process for an inner ring of a knuckle bearing, which comprises the following steps of: manufacturing an evanescent mode model, drilling a hole of which the diameter is smaller than that of a graphite rod on the evanescent mode model, and loading the graphite rod of which the wall thickness is larger than that of the evanescent mode model; after the graphite rod is installed, a special evanescent mode coating for the copper alloy is brushed and dried in a drying room; the dried model is connected through an EPS foam plastic pouring gate; placing the assembled model in an evanescent mode sand box, uniformly adding dry sand, carrying out micro-vibration compaction, covering the upper part of the sand box with plastic cloth for sealing, carrying out vacuum pumping and negative pressure, and pouring high-temperature alloy liquid; the negative pressure is released after the pressure is maintained for a set time; and after the pouring gate is cut off, the needed graphite bearing is obtained through machining. According to the method, the technological process is simplified, the machining period is short, joint bearing inner ring grinding and lapping machining are completely fused, final machining is achieved, and the machining efficiency and machining precision of the joint bearing are improved.

Description

technical field [0001] The invention belongs to the technical field of mechanical bearing casting, and particularly relates to a grinding process for an inner ring of a joint bearing. Background technique [0002] The bearing industry is the basic industry of the manufacturing industry, a key component in the equipment manufacturing industry, and an indispensable "joint" for the construction of the national economy. The performance, quality and reliability of mechanical equipment depend on the performance of bearings. [0003] Spherical plain bearing, also known as spherical plain bearing, its structure consists of an outer ring with a spherical surface and an inner ring with an outer spherical surface. Self-lubricating spherical plain bearing is a special form of spherical plain bearing that does not need to be supplemented with lubricants. It is characterized by simple structure, small volume, large bearing capacity, small friction coefficient, impact resistance, corrosio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22C9/04B22C7/02B22C9/22B22D27/15B22D31/00
CPCB22C9/04B22C7/02B22C9/22B22D27/15B22D31/00
Inventor 包建东
Owner 江苏博涛智能热工股份有限公司
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