Bearing bush finely-bored inside diameter skiving process
A technology of fine boring and inner diameter, applied in the direction of manufacturing tools, boring/drilling, metal processing equipment, etc., can solve the problems of strong specificity, not suitable for small and medium batches, and difficult promotion
Inactive Publication Date: 2013-06-05
宁波市汽车轴瓦厂
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Problems solved by technology
A single type of bearing bush is very suitable for large batches, but the investment in special machine tools is large, the technical requirements for combined tools are high, the price is expensive, and the specificity is strong. It is not suitable for small and medium batches, and the production of multi-model bearing bushes is difficult to promote.
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Embodiment 1
[0017] Such as figure 1 As shown, the engine bearing bush is made of the steel back 4 and the wear-resistant alloy double alloy material of the inner surface 5 through precision machining. According to the design requirements of high engine speed and friction resistance, the wall thickness of the upper end of the two sides of the inner diameter surface of the bearing bush must be The thinning is 0.03-0.05mm, and the thinning length is 8-12mm. According to the technical requirements of the bearing bush, the wall thickness H is at the upper thinning part The boring must be completed at the same time, otherwise the quality of the thinned part will be unqualified, and irregular corrugated curves will inevitably appear. For this reason, our company designed and transformed the special machine tool for the inner diameter of the fine boring bearing bush, changed the spindle box of the machine tool from the horizontal state to the boring bar upturned by 1.3 to 1.5 degrees, and change...
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The invention relates to a bearing bush finely-bored inside diameter skiving process. A bearing bush of an engine is formed by precision-machining of a double wear-resistant alloy material of the steel back (4) and the inside surface (5); a boring tool shank (1) of a spindle of a machine tool is tilted at 1.3 to 1.5 DEG; a first cutter (2) and a second cutter (3) are fixed on the boring tool shank (1) in turn from the left to the right; the second cutter (3) can cut the wall of an inside surface (5) to a thickness H; and the first cutter (2) cuts the wall of the inside surface to a thickness H which is between 0.03 and 0.05 millimeters. The double-diaphragm vacuum pump is applied in a vehicle for the first time, the air pumping and exhaust motion principle of the pump is unique, the diaphragms are driven by an eccentric driving shaft, the diaphragms are integrated to form a check valve, the service life is long, and the shock absorption effect is desirable.
Description
technical field [0001] The invention belongs to the field of fine boring technology, and in particular relates to a fine boring inner diameter thinning technology of a bearing bush. Background technique [0002] Boring is mainly a machine tool that uses a boring tool to bore an existing prefabricated hole in a workpiece. Generally, the rotation of the boring tool is the main motion, and the movement of the boring tool or workpiece is the feed motion. It is mainly used to process high-precision holes or complete the finishing of multiple holes at one time. In addition, it can also process other processing surfaces related to hole finishing. Drilling, milling, and cutting can also be performed with different tools and accessories. Its machining accuracy and surface quality are higher than those of drilling machines. The boring machine is the main equipment for processing large box parts. Thread and processing outer circle and end face, etc. [0003] The engine bearing bush...
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IPC IPC(8): B23B41/00
Inventor 朱跃贺立峰
Owner 宁波市汽车轴瓦厂