CN2936554Y - Fixtures for machining oblique shafts - Google Patents

Abstract

The utility model discloses an assembly clamp for oblique crankshaft machining, belonging to a special assembly clamp, which overcomes the problems of the prior oblique crankshaft that the latter has inclined structure on a machining shaft end, such as high machining cost, fussy machining method and other problems. In the utility model assembly clamp, a straight shaft and an inclined part are integrated, and the straight shaft is a steplike straight shaft; the inclined part is provided with a step hole, and the included angle of the step hole center line and the straight shaft main axis is the same as the tilt angle of the oblique shaft part on the oblique crankshaft to be machined; the step hole aperture is the same as the diameter of the last two excircles of the straight shaft part on the oblique crankshaft to be machined. The utility model has the advantages that with the simple structure, the utility model is easy to make, when the utility model is used on a common lathe, machining task can be performed by clamping once, according to the changing requirement of the inclined structure angle in the workpieces to be machined; the angle of the clamp can be changed correspondingly, forming seriation of assembly design and facilitating assembly management.

Description

Fixtures for machining oblique shafts

technical field

The utility model belongs to a special tooling fixture, in particular to a tooling fixture for oblique bending shaft processing.

Background technique

The oblique shaft for hydraulic plunger pumps is composed of a straight shaft and an oblique shaft of the warped part of the shaft end, and the oblique shaft of the warped part of the shaft end is oblique to the straight shaft; Most of them are carried out by CNC machining centers and special machines, and the processing of the straight axis and inclined axis is carried out by clamping in stages. Due to the influence of processing and manufacturing prices, special tooling and clamping are rarely used in the processing of such axes. The processing cost of this oblique bending shaft is high, and the processing method is loaded down with trivial details.

Contents of the invention

The utility model provides a tooling fixture for processing obliquely bent shafts, which overcomes the problems of high processing cost and cumbersome processing methods in the existing processing of such obliquely bent shafts, and ensures accurate processing quality with simple and easy special tooling fixtures.

The tooling fixture for oblique bending shaft processing of the utility model has a straight axis and an inclined part as a whole. The inclination angle of the oblique shaft part processed by it is the same; the diameter of the stepped hole is sequentially the same as the diameter of the last two outer circles of the straight shaft part of the processed oblique shaft.

When the utility model is used to process the oblique shaft, the diameter of the stepped hole of the fixture is the same as the diameter of the last two outer circles of the straight shaft part of the processed oblique shaft, and the oblique shaft can be smoothly clamped on the fixture, ensuring that the fixture is straight. The main axis of the shaft coincides with the axis of the oblique shaft at the outer end of the oblique shaft processed by it, and the center line of the stepped hole coincides with the axis of the straight shaft part of the oblique shaft processed by it. The included angle of the main axis of the shaft is the inclination angle of the oblique shaft at the outer warping end of the oblique shaft, and the inclination is guaranteed by this. When processing the straight part of the oblique shaft, make the centerline of the stepped hole of the jig be in the horizontal direction; when processing the oblique part of the oblique shaft, make the main axis of the jig be in the horizontal direction.

The utility model has a simple structure and is easy to manufacture. The application of the tooling fixture of the utility model does not require a numerical control machining center or special equipment. It only needs to adjust the machining axis by turning the fixture on an ordinary lathe, and the machining can be completed after one clamping. Task. According to the changing requirements of the angle of the inclined structure in the workpiece to be processed, the included angle of the fixture can be changed accordingly to form a serialization of tooling design and facilitate the management of tooling to adapt to the processing of inclined shafts with different inclined structures.

Description of drawings

Fig. 1 is a structural diagram of a processed oblique shaft for a plunger pump.

Fig. 2 is a schematic diagram of an embodiment of the utility model.

Fig. 3 is a use state diagram of the embodiment of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.

In Fig. 1, one of the oblique shafts for plunger pumps to be processed is given, wherein the oblique shaft part 1 at the left end of the oblique shaft, the straight shaft part 2 of the oblique shaft, and the oblique shaft part of the oblique shaft The part and the straight axis part are oblique. The difficulty of its processing lies in the determination of the inclination angle of the oblique axis at the left end during the processing.

Fig. 2 has shown the structural shape of the clamp embodiment of the present utility model, and when manufacturing this clamp, it is processed into three sections of step cylinders earlier, and its right end step part forms step shape straight axis 6; Cut out an inclined plane at , which becomes the inclined part. The angle between the normal line of the inclined plane and the axis of the straight axis is the same as the inclined angle of the oblique axis at the left end of the oblique axis in Figure 1, and then the large cylinder at the inclined part is perpendicular to the inclined plane at the left end of the inclined part. Mill out the right-angle boss 5, and finally, according to the size of the processed oblique shaft, drill a stepped hole 4 with a corresponding diameter on the right-angle boss along the vertical direction.

In the implementation state shown in Figure 3, the oblique shaft is installed in the stepped hole 4 of the fixture. At this time, the straight shaft part 2 of the oblique shaft is processed so that the centerline of the stepped hole of the fixture is in a horizontal position, so that the oblique shaft The inclination of left end oblique shaft part 1 guarantees naturally.

Claims (1)

1. The tooling fixture for oblique bending shaft processing is characterized in that the straight axis and the inclined part are integrated, the direct axis is a stepped straight axis, the inclined part has a stepped hole, and the angle between the center line of the stepped hole and the main axis of the straight axis The inclination angle is the same as that of the oblique shaft portion of the oblique shaft processed by it; the diameter of the stepped hole is sequentially the same as the diameter of the last two outer circles of the straight shaft portion of the oblique shaft processed by it.

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