Clamping device for laser cladding of engine connecting rod and connecting rod repairing method

A technology of engine connecting rod and laser cladding, which is applied in the coating, metal material coating process, etc., can solve the problems that it is difficult to control the surface roughness and dimensional accuracy of the coating, and does not meet the environmental impact assessment occupational hazard assessment, etc., to improve Effects of restoration efficiency and quality, improvement of restoration efficiency, and simplification of secondary processing

Pending Publication Date: 2022-05-27
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] It has been verified by practice that the brush plating repair technology has a good repair effect on the defect of the big head hole of the connecting rod, but it is difficult to control the roughness and dimensional accuracy of the coating surface by brush plating. The most important thing is that the brush plating solution contains acids, Heavy metal nickel and other substances do not meet the requirements of environmental impact assessment and occupational disease hazard assessment. This repair method has been banned by the Ministry of Environmental Protection

Method used

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  • Clamping device for laser cladding of engine connecting rod and connecting rod repairing method
  • Clamping device for laser cladding of engine connecting rod and connecting rod repairing method
  • Clamping device for laser cladding of engine connecting rod and connecting rod repairing method

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Experimental program
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Effect test

Embodiment 1

[0055] as Figure 1 、 Figure 2 and Figure 5 Commonly shown, a clamping device for engine connecting rod laser cladding repair, including: turntable 1 and multiple circumferentially distributed fixtures mounted on the turntable 2;

[0056] The turntable 1 is fixed with a ring of gear 11, the ring of gear 11 meshes with the drive gear 3, the drive gear 3 is driven by a motor device, and the motor device is a motor or a motor driven reducer;

[0057] Fixture 2 includes a T-bracket 21, a positioning shaft 22, a fixed support block 23 and a plug-in support block 24, a T-type bracket 21 is inverted fixed to the turntable 1, a fixed support block 23 and a positioning axis 22 is fixed to the T-bracket 21, the fixed support block 23 is located obliquely above the positioning axis 22, the fixed support block 23 is provided with a positioning pin group, when the clamping link cover 5, the insertion support block 24 is mounted on the T-type bracket.

[0058] The positioning pin group includes ...

Embodiment 2

[0062] An engine linkage laser cladding repair method, characterized in that it comprises the following steps:

[0063] S1. Collect the connecting rod to be repaired in batches, measure the inner diameter of each connecting rod head hole from four directions and record it, and compare the maximum deviation diameter. The angle between the two adjacent directions is 45°, and the diameter of the large head hole can also be measured from six or eight directions.

[0064] S2, boring and milling of the deformation layer of the large head hole, boring and milling volume is greater than the maximum deviation diameter, in order to completely remove the amount of deformation.

[0065] S3. Clean the processing surface with anhydrous alcohol, remove impurities such as oxides and oil stains, and remove the oil and sediment left in the oil channel thoroughly.

[0066] S4: Fill the connecting rod tile groove holes with sand clay and press the shape with a spatula to clean up the excess clay. San...

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Abstract

The invention discloses a clamping device for laser cladding of an engine connecting rod and a connecting rod repairing method. The clamping device comprises a rotating disc and a plurality of clamps which are uniformly distributed and mounted on the rotating disc in the circumferential direction; a gear ring is fixedly arranged on the turntable and is meshed with a driving gear, and the driving gear is driven by a motor device; the clamp comprises a T-shaped support, a positioning shaft, a fixed supporting block and an insertion supporting block, the T-shaped support is inversely fixed to the rotary disc, the fixed supporting block and the positioning shaft are fixed to the T-shaped support, the fixed supporting block is located above the positioning shaft, the fixed supporting block is provided with a positioning pin set, and when the connecting rod cover is clamped, the insertion supporting block is inserted into the T-shaped support. According to the deformation and out-of-round phenomena of the connecting rod big end hole, a laser cladding method is adopted for repairing, and the problems that the strength of a size reduction repairing method is weakened, and environmental pollution is caused by an electric brush plating material adding method are solved.

Description

Technical field [0001] The present invention relates to the field of engine linkage repair technology, in particular, to a kind of engine connecting rod laser cladding clamping device and linkage repair method. Background [0002] Engine is the heart of the car, is one of the core components of automobile remanufacturing, connecting rod is one of the key components of the engine, the single value is higher, there is remanufacturing value, because the connecting rod in the working process by compression, stretching and other alternating load action, under the action of this alternating stress, the connecting rod head hole is prone to deformation and loss of rounding phenomenon, increasing the standard coordination gap with the crankshaft, will aggravate the deformation of the hole and also affect the smoothness and reliability of motion transmission. [0003] At present, the following methods are generally used to repair the connecting rod head hole: [0004] Reduced size repair m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C23C24/10C22C38/02C22C38/04C22C38/44C22C38/54
CPCC23C24/103C22C38/54C22C38/04C22C38/44C22C38/02Y02P70/10
Inventor 李松五李燕乐王开安李成陈维余李方义
Owner WEICHAI POWER CO LTD
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