CN102941450B - Method for processing shaft parts with phase angles - Google Patents

Abstract

The invention discloses a method for processing shaft parts with phase angles. The method comprises the following steps of: processing a part to a shaft formed by a plurality of shaft sections, wherein if a finished product comprises a molded surface with a phase angle, the outer contour of the shaft section with the molded surface is greater than the outer contour of the molded surface in the finished product; milling a technical flat on one shaft section of the shaft part; clamping the shaft part by referencing on the bottom surface of the technical flat; determining an angle between the molded surface with the phase angle, an oil hole or a pin hole and the bottom surface of the technical flat according to the finished product, then rotating a corresponding angle by referencing on the bottom surface of the technical flat, and respectively processing the molded surface with the phase angle, the oil hole or the pin hole; and lathing the technical flat. Through the addition of the technical flat, the molded surface with the phase angle, the oil hole or the pin hole can be processed by referencing on a same plane during processing, so that the processing difficulty of products is reduced, the processing cycle is shortened, the production cost is reduced and the product quality is improved.

Description

With the Machining of Shaft-type Parts method at phase angle

Technical field

The present invention relates to the processing method with the axial workpiece at phase angle such as camshaft, bent axle.

Background technology

On the part such as camshaft, bent axle, inevitably with profile, the oilhole and pin-and-hole etc. at phase angle, at present, when processing this type of axial workpiece with phase angle, for solving profile, oilhole and pin-and-hole phase angle error machining benchmark and detection reference problem, all adopt first preprocessing pin-and-hole, then roughing profile and oilhole, the process program of the profile of fine finishining pin-and-hole, then fine finishining again and oilhole.The method must pin hole processing several times, and repeat processing, correct error is large, on product final mass, particularly the impact that causes of heat treatment quench-hardened case uniformity is comparatively large, and pin-and-hole after heat treatment processing difficulties, cause processing cost to increase, product quality is not high, has influence on the final utilization life-span of product.

Summary of the invention

Order of the present invention is to provide a kind of Machining of Shaft-type Parts method at band phase angle reducing Product processing difficulty, shorten the process-cycle, reduce production cost, improve the quality of products.

For this reason, the technical solution adopted in the present invention is: a kind of Machining of Shaft-type Parts method with phase angle, comprises the steps:

(1) part is processed into the axle be made up of multiple shaft part, if finished product comprises the profile at band phase angle, the shaft part outline at this profile place is greater than the mesoprosopic outline of finished product;

(2) on one of them shaft part of axial workpiece, miller skill is flat, the flat breach for being arranged on shaft part one end of described technique, and the flat sidewalls orthogonal of technique is in axis of workpiece, and the flat bottom surface of technique is plane;

(3) with the flat bottom surface of technique for positioning datum carries out clamping;

(4) determine the angle of the bottom surface of being with the profile at phase angle or oilhole or pin-and-hole and technique flat according to finished product, then with the flat bottom surface of technique for benchmark rotates corresponding angle, respectively to being with the profile at phase angle or oilhole or pin-and-hole to process;

(5) turner skill is flat.

The present invention increases auxiliary process benchmark in the Machining of Shaft-type Parts process at band phase angle---and technique is flat, man-hour is being added to the band profile at phase angle or oilhole or pin-and-hole, all with technique flat for benchmark carry out the rotation of respective angles after process, technique is flat remain to the profile at all band phase angles or oilhole or pin-and-hole machine after again car fall.Finally, then to be with the pin-and-hole at phase angle for machining benchmark and detection reference, fine finishining is carried out to the profile in part, to be with the pin-and-hole at phase angle to assemble for reference for assembling.

As preferably, in step (2), flat being arranged on of described technique is positioned on the shaft part of termination.

The invention has the beneficial effects as follows:

(1) flat by setting up technique, make the profile at band phase angle or oilhole or pin-and-hole be all that benchmark is processed with the same face adding man-hour, phase angle error is more easy to control, and Product processing difficulty reduces;

(2) on the flat cylindrical being arranged on a shaft part of technique, heat treatment is without distortion, directly even up with table of beating during centering, centering is easy, centering precision is high, improve product profile allowance for finish uniformity, improve the uniformity of product profile heat treatment depth of hardening zone, improve product quality;

(3) the flat handling ease of technique, can carry out with sequence with the profile roughing at band phase angle, during removal, engine lathe can be processed, and processing cost is extremely low.

In a word, the present invention make the axis products such as camshaft, bent axle process become easier, more save, more efficient.

Accompanying drawing explanation

Fig. 1 is the camshaft being with technique flat.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the B-B sectional view of Fig. 1.

Fig. 4 is the C-C sectional view of Fig. 1.

Fig. 5 is the D direction view of Fig. 1.

Detailed description of the invention

Below in conjunction with drawings and Examples, the invention will be further described:

With the Machining of Shaft-type Parts method at phase angle, comprise the steps:

(1) part is processed into the axle be made up of multiple shaft part, if finished product comprises the profile at band phase angle, the shaft part outline at this profile place is greater than the mesoprosopic outline of finished product, reserves certain allowance.

(2) as shown in Figure 1, miller skill flat 1 on one of them shaft part of axial workpiece, described technique flat 1 is for being arranged on the breach of shaft part one end, and the sidewall 1a of technique flat 1 is perpendicular to axis of workpiece, and the bottom surface 1b of technique flat 1 is plane; The cross section of technique flat 1 is that the face surrounded by arc and the straight line being connected arc two ends is formed, and arc is one section of the external arc on the flat 1 place shaft part of technique.

(3) with the bottom surface of technique flat 1 for positioning datum carries out clamping; Technique flat 1 is the technique auxiliary base set up, and is the positioning datum in process.

(4) composition graphs 1---shown in Fig. 5, finished product camshaft from left to right set gradually by the profile 2 at six band phase angles, be respectively the 6th cylinder exhaust cam, 6th cylinder admission cam, the 6th cylinder fuel cam, the 5th cylinder exhaust cam, the 5th cylinder admission cam, the 5th cylinder fuel cam; This cam is also provided with the oilhole 3 at two band phase angles and the pin-and-hole 4 at a band phase angle.Determine the angle of the bottom surface of being with the profile at phase angle or oilhole or pin-and-hole and technique flat according to finished product, then with the bottom surface of technique flat 1 for benchmark rotates corresponding angle, respectively to being with the profile 2 at phase angle or oilhole 3 or pin-and-hole 4 to process.

(5) turner skill is flat, and machine tool can complete, handling ease.

Be preferably, in step (2), described technique flat 1 is arranged on and is positioned on the shaft part of termination.

Claims (2)

1. the Machining of Shaft-type Parts method with phase angle, is characterized in that: comprise the steps:

(1) part is processed into the axle be made up of multiple shaft part, if finished product comprises the profile at band phase angle, the shaft part outline at this profile place is greater than the mesoprosopic outline of finished product;

(2) on one of them shaft part of axial workpiece, miller skill is flat, the flat breach for being arranged on shaft part one end of described technique, and the flat sidewalls orthogonal of technique is in axis of workpiece, and the flat bottom surface of technique is plane;

(3) with the flat bottom surface of technique for positioning datum carries out clamping;

(4) determine the angle of the bottom surface of being with the profile at phase angle or oilhole or pin-and-hole and technique flat according to finished product, then with the flat bottom surface of technique for benchmark rotates corresponding angle, respectively to being with the profile at phase angle or oilhole or pin-and-hole to process;

(5) turner skill is flat.

2. according to the Machining of Shaft-type Parts method at band phase angle according to claim 1, it is characterized in that: in step (2), flat being arranged on of described technique is positioned on the shaft part of termination.