Machining and Positioning Method of Camshaft Hole
A camshaft hole and positioning method technology, which is applied to positioning devices, metal processing equipment, metal processing machinery parts, etc., can solve the problems of large machining allowance, low assembly accuracy of camshaft holes, and increased processing costs, etc., and achieve Reduce processing costs, avoid misalignment without finishing allowance, improve assembly accuracy and quality stability
Active Publication Date: 2017-02-01
GUANGXI YUCHAI MASCH CO LTD
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Problems solved by technology
[0003] At present, in the machining of the camshaft hole of the same type of diesel engine, the camshaft frame and the cylinder head are processed by stud positioning, and the stud positioning is easy to produce a gap, resulting in misalignment of the camshaft semicircle holes on the cylinder head and camshaft frame , the machining allowance is large, and the machining cost is increased, or after the camshaft hole is machined according to the above method, the assembly accuracy of the camshaft hole will not be high when the camshaft frame and the cylinder head are reassembled, and misalignment problems will easily occur. Moreover, using Stud positioning, will increase the variety of similar parts
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[0022] The specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiments.
[0023] Unless expressly stated otherwise, throughout the specification and claims, the term "comprise" or variations thereof such as "includes" or "includes" and the like will be understood to include the stated elements or constituents, and not Other elements or other components are not excluded.
[0024] Such as figure 1 As shown, according to the machining and positioning method of the camshaft hole according to the specific embodiment of the present invention, the camshaft hole is composed of the cylinder head and the camshaft frame, and the machining and positioning method includes the following steps:
[0025] Step 101, put the stud 3 into the mounting screw hole of the cylinder head 1 and tighten it (see ima...
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The invention discloses a method for processing and positioning a cam shaft hole. The method comprises the following steps: (1) studs are mounted in mounting screw holes of a cylinder cover and are tightened; (2) a cam shaft framework is mounted on the cylinder cover in a way of aligning with the studs, and a rubber hammer is used for tapping the cam shaft framework, so that the bonding surface of the cam shaft framework is attached to the bonding surface of a cam shaft of the cylinder cover; (3) an auxiliary positioning element is provided according to a gap between a stud through hole of the cam shaft framework and the studs, the auxiliary positioning element is a positioning drum, the inner diameter of the positioning drum is matched with the outer diameter of each stud, the wall thickness of the positioning drum is matched with the gap, and the auxiliary positioning element is arranged in the studs near the two ends of the cylinder cover in a sleeving manner and is stuffed into the gap to position the cam shaft framework; (4) a nut is screwed in the stud located in the middle of the cylinder cover and is tightened; (5) the auxiliary positioning element is taken out, and the other nuts are screwed in the studs located at the two ends of the cylinder cover and are tightened. Through the adoption of the method, the assembly accuracy of the cam shaft hole can be improved, and the processing cost is reduced.
Description
technical field [0001] The invention relates to the field of machining, in particular to a machining and positioning method for a camshaft hole. Background technique [0002] The camshaft hole of a general diesel engine is composed of the cylinder head and the camshaft frame. The general processing technology is as follows: first, the semicircular hole of the camshaft is rough-bored on the cylinder head and the camshaft frame, and then the camshaft frame needs to be installed on the cylinder. Carry out semi-fine boring and fine boring of camshaft holes on the cover, and finally process other structures such as fuel injector mounting holes on the camshaft frame. [0003] At present, in the machining of the camshaft hole of the same type of diesel engine, the camshaft frame and the cylinder head are processed by stud positioning, and the stud positioning is easy to produce a gap, resulting in misalignment of the camshaft semicircle holes on the cylinder head and camshaft frame...
Claims
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IPC IPC(8): B23Q3/18
CPCB23B35/00B23Q3/18
Inventor 罗刚
Owner GUANGXI YUCHAI MASCH CO LTD