CN103753135A - Machining method for shaft part - Google Patents

Abstract

The invention discloses a machining method for a shaft part. The method includes the steps that the part is machined into a shaft formed by a plurality of shaft sections. If a finished product comprises a profile with a phase angle, the outer contour of a shaft section where the profile is arranged is larger than that of profile in the finished product; a process flat is machined on one shaft section of the shaft part; the bottom surface of the process flat is used as a locating standard to conduct clamping; according to the finished product, an included angle formed between the profile with the phase angle or an oil hole or a pin hole and the bottom face of the process flat is determined, the bottom face of the process flat is used as a standard to rotate the process flat for a corresponding angle to machine the profile with the phase angle or the oil hole or the pin hole; the process flat is machined through a lathe. By adding the process flat, the profile with the phase angle or the oil hole or the pin hole is machined with the same face as the standard, product machining difficulty is reduced, machining period is shortened, production cost is reduced, and product quality is improved.

Description

A kind of Machining of Shaft-type Parts method

Technical field

The present invention relates to the processing method of the axial workpieces such as camshaft, bent axle.

Background technology

On the parts such as camshaft, bent axle, inevitably there will be profile, oilhole and pin-and-hole etc. with phase angle, at present, when this type of axial workpiece with phase angle of processing, 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 is pin hole processing several times, repeats processing, and correct error is large, larger on the impact that particularly heat treatment quench-hardened case uniformity causes of product final mass, and after heat treatment processing difficulties of pin-and-hole, cause processing cost to increase, product quality is not high, has influence on the final service life of product.

Summary of the invention

Order of the present invention is to provide a kind of Machining of Shaft-type Parts method that reduces product difficulty of processing, shortens the process-cycle, reduces production costs, improves 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, comprises the steps:

(1) part is processed into the axle consisting of multiple shaft parts, if finished product comprises the profile with 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, processing technology is flat, and described technique is flat for being arranged on the breach of shaft part end, and the flat sidewall of technique is perpendicular to axis of workpiece, and the flat bottom surface of technique is plane,

(3) take the flat bottom surface of technique as positioning datum, carry out clamping;

(4) according to finished product, determine the angle of the flat bottom surface of profile with phase angle or oilhole or pin-and-hole and technique, then take the flat bottom surface of technique as benchmark rotates corresponding angle, respectively the profile with phase angle or oilhole or pin-and-hole are processed;

(5) lathe processing technology is flat.

It is flat that the present invention increases auxiliary process benchmark-technique in the Machining of Shaft-type Parts process with phase angle, at the profile to phase angle or oilhole or pin-and-hole, add man-hour, all so that technique is flat, after benchmark carries out the rotation of respective angles, process, technique is flat remain to all profiles with phase angle or oilhole or pin-and-hole and machine after again car fall.Finally, then take the pin-and-hole with phase angle as machining benchmark with detection reference, the profile in part is carried out to fine finishining, at the pin-and-hole take with phase angle, assemble as reference for assembling.

As preferably, in step (2), described technique is flat to be arranged on the shaft part that is positioned at termination.

The invention has the beneficial effects as follows:

(1) flat by setting up technique, profile with phase angle or oilhole or pin-and-hole are all processed as benchmark take the same face adding man-hour, phase angle error is more easy to control, and product difficulty of processing reduces; (2) on the flat cylindrical that is arranged on a shaft part of technique, heat treatment is without distortion, during centering, directly with the table of beating, even up, centering is easy, centering precision is high, improve product profile allowance for finish uniformity, improved the uniformity of product profile heat treatment depth of hardening zone, improved product quality; (3) the flat handling ease of technique, can carry out with order with the profile roughing with phase angle, and during removal, engine lathe is can processing cost extremely low.In a word, the present invention makes the axis products processing such as camshaft, bent axle become easier, more saving, more efficient.

Accompanying drawing explanation

Fig. 1 is the camshaft flat with technique.

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

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

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

Fig. 5 is that the D of Fig. 1 is to view.

The specific embodiment

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

A kind of Machining of Shaft-type Parts method, comprises the steps:

(1) part is processed into the axle consisting of multiple shaft parts, if finished product comprises the profile with 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, on one of them shaft part of axial workpiece, processing technology is flat 1, and 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 to consist of with the face that the straight line that is connected arc two ends surrounds arc, and arc is a section of external arc on the flat 1 place shaft part of technique.

(3) take the bottom surface of technique flat 1 as positioning datum carries out clamping; The technique auxiliary base of technique flat 1 for setting up is the positioning datum in process.

(4) in conjunction with shown in Fig. 1-Fig. 5, on finished product camshaft, from left to right set gradually the profile 2 with phase angle by six, be respectively the 6th cylinder exhaust cam, the 6th cylinder admission cam, the 6th cylinder fuel cam, the 5th cylinder exhaust cam, the 5th cylinder admission cam, the 5th cylinder fuel cam; On this cam, be also provided with two oilhole 3 and pin-and-holes 4 with phase angle with phase angle.According to finished product, determine the angle of the flat bottom surface of profile with phase angle or oilhole or pin-and-hole and technique, then take the bottom surface of technique flat 1 as benchmark rotates corresponding angle, respectively the profile 2 with phase angle or oilhole 3 or pin-and-hole 4 are processed.

(5) lathe processing technology is flat, and machine tool can complete, handling ease.

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

Claims (2)

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

(1) part is processed into the axle consisting of multiple shaft parts, if finished product comprises the profile with 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, processing technology is flat, and described technique is flat for being arranged on the breach of shaft part one end, and the flat sidewall of technique is perpendicular to axis of workpiece, and the flat bottom surface of technique is plane;

(3) take the flat bottom surface of technique as positioning datum, carry out clamping;

(4) according to finished product, determine the angle of the flat bottom surface of profile with phase angle or oilhole or pin-and-hole and technique, then take the flat bottom surface of technique as benchmark rotates corresponding angle, respectively the profile with phase angle or oilhole or pin-and-hole are processed;

(5) lathe processing technology is flat.

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

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