Design OF XIALI Automobile Camshaft Processing Technological AND Quality Control

Since the 21st century, the motor car engine manufacturing industry has carried on a series of changes in the product, the fabrication technology, the cutting tool, production management aspect, has more difference with past engine Manufacturing firm, the market competition is intense. We should establish tallies with the Chinese national condition and the factory actual sparepart processing production line, formulates the appropriate processing craft, and selects the reliable economical the equipment. It has the very big practical significance to reduces the product cost, the quality assurance, enhances the competitive power.Cam shaft's as the key component in motor car engine timing mechanism, it actuates the engine entire match system and other appendices, makes it turnover massive fuel gases fastly, accurately; its performance and quality immediate influence engine complete machine performance. This article has conducted the deep research in view of the XIALI automobile TJ376Q cam shaft's processing characteristic, links to the factory reality, in establishing collection sophistication and efficient unified cam shaft production line's process, from the earlier period plan to TJ376Q camshaft's processing craft, equipment, examination, quality control aspects and so on . In this paper, it mainly has solved the following problems according to the product request, formulating the reasonable cam shaft production line metre, the plane layout and the craft route:1. Design of production line: According to the scene plan, the production line chooses the U arrangement, not only the guarantee physical distribution is unobstructed, the area is small; Moreover reduces the worker to take a walk the time, does to person of many machine operations, reduced the production line to operate worker's quantity.2. Technological design: The TJ376Q engine cam shaft follows"the datum to be unified"the principle, uses two apex holes to take the localization datum, it has avoided the work piece position error in the multiple attire clamps which causes because of the localization datum's transformation, simultaneously takes the subsequent handling the localization datum; Research rational design processing craft, guarantee processing quality.3. Technological process division: Because cam shaft's working accuracy is high, the entire technological process is divisied three stages: Rough machining, semi-finishing, precision work. In cam shaft's processing, what the most important and difficult is the cam shape surface processing. The peach shape abrasive machining is the critical process which the cam shaft machine adds.4. Equipment designation: Having multianalysised cam shaft's processing characteristic and the processing difficulty, having chosen the optimization processing equipment, pays great attention the domestic and foreign dependable quality, creditworthiness good equipment Manufacturer on the equipment shaping. Especially in cam shaft's essential spot processing, primordial consideration sophisticated equipment.5. The cam silhouette theoretical calculation and provides the processing controlled variable: Using the envelope curve theory, has established with the numerical control non-profile method, when permanent line speed grinding cam needs mathematical models and so on grinding wheel center coordinate, carry on the computation and the inferential reasoning to cam contour's processing principle, and calculates the corresponding grinding wheel center coordinate and the equipment spindle speed disposition, provides the controlled variable for the production processing.6. Lift of cam examination method and metrical data appraisal: Proposed about the lift of cam survey new method: Metrical data locating and data appraisal. In what the TJ376Q cam shaft lift examination uses is the symmetrical sensitivity point law, because the symmetrical sensitivity point's method characteristic is the processing speed is quick, the accuracy can also satisfy certain request, uses this assessment method another reason is in the production quality control, at present the TJ376Q cam shaft production line's rough grinding grinder's profile service, is depending on the symmetrical sensitivity point law determination peach point. Also uses the symmetrical sensitivity point law definite peach point in the examination, may cause the survey and the profile service is the survey and the processing quality feedback with the identical datum, to guarantee that cam shaft's processing quality provides the basis. And causes it to apply in the TJ376Q cam shaft's survey, has guaranteed the product quality.7. Production line quality question improvement and online quality control: The high grade engine product is guaranteed depending on the high grade spare part, but the high grade spare part is guarantees by the advanced process technology and the perfect examination method. Has established the complete quality control system on the TJ376Q cam shaft production line; The quality question which appears regarding the production line, the author from the human, machine, the material, France, surrounds five aspects to obtain, the analysis reason, proposes and implements the solution; The introduction statistical process control theory, - misses the control chart extremely on the production line using the average value, causes the entire production process to be at the control state, has avoided defective works output.Because the earlier period plan and the earlier period preparation are fuller, and has the correct theory instruction, the TJ376Q cam shaft entire production line plane layout is reasonable, the equipment utilization rate is high, productivity is stable. At the same time, in the production has adopted the advanced quality control method, therefore the TJ376Q cam shaft production line entered the stable productive phase now, has realized the efficiency and the advanced unification, has achieved the anticipated goal.The author has unified the theoretical knowledge in the actual production to summarize the present paper, Therefore, in the paper knowledge and the conclusion have the very important reference value to cam shaft's actual production.