CN205270952U - Machining anchor clamps of reduction case - Google Patents

Abstract

The utility model discloses a machining anchor clamps of reduction case, including the anchor clamps body that has perpendicular riser, be provided with on the specific perpendicular riser of clamp and insert machined part and fixed area shoulder mandrel, press from both sides specific perpendicular riser top and be fixed with the bushing plate, the bushing plate is the cell type structure, and a plurality of drillings have been offered in the contact of terminal surface and machined part under the bushing plate on the bushing plate, are provided with a nail that supports and fix a position the machined part on the anchor clamps body. The utility model discloses having the area shoulder mandrel of tape spool shoulder, leaning on the tip to press from both sides tight the double -layereds friction -tight power transmission cutting moment that produces, limited five degrees of freedom of machined part, the branch maybe X, the rotation of the removal of Y, Z orientation and X, Z orientation, is pressing from both sides specific base with one nail restriction one degree of freedom, the rotation of Y orientation promptly, and six degrees of freedom quilts of this machined part are limited totally, have guaranteed to process the accurate of hole.

Description

A mechanical processing fixture for a reducer box

【Technical field】

The utility model belongs to the field of reducer casings, in particular to a machining fixture for the reducer casing.

【Background technique】

There are many holes on the box of the reducer. During the processing of these holes, different fixtures are used to position and fix the box of the reducer. Every time a hole is machined, the workpiece needs to be re-clamped and the fixture replaced. Not only is the operation troublesome, The processing efficiency is low, and at the same time, the position accuracy requirements of each hole after processing cannot be well guaranteed.

【Content of utility model】

The purpose of this utility model is to overcome the above disadvantages and provide a machining fixture for the reducer box. The fixture is easy to disassemble and can repeatedly process the same part. It is an economical and easy-to-operate fixture.

In order to achieve the above object, the utility model includes a clamp body with a vertical vertical plate, the vertical vertical plate of the clamp body is provided with a shoulder mandrel that can be inserted into the workpiece and fixed, and the top of the vertical vertical plate of the clamp body is fixed with a drilling template. The drilling template has a groove structure, the lower end surface of the drilling template is in contact with the workpiece, a number of drilling holes are opened on the drilling template, and supporting nails for supporting and positioning the workpiece are arranged on the clamp body.

A bushing is arranged in the borehole, and a replaceable drill sleeve is arranged in the bushing.

A drill sleeve screw is arranged in the bore hole.

The vertical vertical plate of the clamp body and the drilling template are positioned through positioning pins.

The drilling template is fixed on the top of the vertical vertical plate of the clamp body by slotted countersunk screws.

One end of the shouldered mandrel fixes the workpiece on the shouldered mandrel through the first hex nut and the first spring washer.

The other end of the shouldered mandrel is fixed on the vertical vertical plate of the clamp body through the second hex nut and the second spring washer.

Compared with the prior art, the utility model has a shouldered mandrel with a shaft shoulder, and the cutting torque is transmitted by the clamping friction force generated by the end clamping, which limits the five degrees of freedom of the workpiece, which are X, Y , the movement in the Z direction and the rotation in the X and Z directions. A support nail is used on the base of the clamp body to restrict one degree of freedom, that is, the rotation in the Y direction. The six degrees of freedom of the workpiece are completely restricted to ensure the accuracy of the processing hole. Accurate, the jig has low manufacturing cost, easy maintenance, easy processing of jig parts, and low operation difficulty. During maintenance, the jig body and the drill template can be repaired independently, which can save processing and maintenance costs. It is easy to assemble and disassemble.

Further, the utility model can replace different drill sleeves to meet different hole diameter requirements.

【Description of drawings】

Fig. 1 is a structural sectional view of the utility model;

Fig. 2 is a structural top view of the utility model;

Among them, 1. Support nail; 2. First hex nut; 3. Shoulder mandrel; 4. Work piece; 5. Drill sleeve; 6. Bushing; 7. Drill sleeve screw; 8. Drill template; 9. Locating pin; 10, slotted countersunk head screw; 11, spring washer; 12, clip body.

【detailed description】

Below in conjunction with accompanying drawing, the utility model is further described.

Referring to Fig. 1 and Fig. 2, the utility model includes a clamp body 12 with a vertical vertical plate. The top of the plate is fixed with a drilling template 8, which is in a groove structure, and the lower end surface of the drilling template 8 is in contact with the workpiece 4, and a number of drilling holes are provided on the drilling template 8, and the clamp body 12 is provided with a support for positioning the workpiece 4 The support nail 1 is provided with a bushing 6 in the drill hole, a replaceable drill sleeve 5 is provided in the bush, a drill sleeve screw 7 is provided in the drill hole, the vertical vertical plate of the clamp body 12 and the drill template 8 pass through the positioning pin 9 For positioning, the drilling template 8 is fixed on the top of the vertical vertical plate of the clamp body 12 by the slotted countersunk head screw 10, and one end of the shoulder mandrel 3 fixes the workpiece 4 on the belt by the first hex nut 2 and the first spring washer. On the shoulder mandrel 3 , the other end of the shoulder mandrel 3 is fixed on the vertical vertical plate of the clamp body 12 through the second hex nut and the second spring washer 11 .

This fixture adopts the positioning method of "a shoulder mandrel plus a supporting nail", which limits the 6 degrees of freedom of the workpiece and ensures the accuracy of the machining hole of the fixture.

Example:

The diameter of the positioning hole in the workpiece 4 is 52mm, and the through hole is 152mm away from the bottom surface. The length of the lower end surface of the workpiece 4 is 154mm, and the axial distance from the Φ15mm hole is 20mm. It can be seen from Fig. 1 that on the drill template, the corresponding positions of the drilled holes and each counterbore.

The using method of the clamp of the present utility model comprises the following steps:

1) The clamp body 1 is placed on a plane (vertical drilling machine), the support nail 1 is fixed on the base of the clamp body 12, and the second spring washer that contacts the right end of the shoulder mandrel 3 with the vertical vertical plate of the clamp body 12 11 and the second hexagonal nut are tightened, and then the workpiece 4 is placed on the shouldered mandrel 3, and the shouldered mandrel 3 of φ52mm is used to coordinate with the workpiece 4 for positioning. After the workpiece 4 is placed, use the hexagonal nut 2 and The spring washer clamps the workpiece 4, the drill template 8 is connected to the clamp body 12 through the positioning pin 9 and the slotted countersunk screw 10, the drill sleeve screw 7 is arranged on the frame of the drill template 8, the bushing 6 and the drill sleeve 5 Cover the counterbore corresponding to the workpiece 4 on the drilling template 8;

2) Simultaneously drill 4 counterbores with a diameter of 8mm;

3) Disassemble the drilling template 8, and take out the processed parts;

4) Repeat the above process to process the same kind of parts.

Claims (7)

1. A machining fixture for a reducer casing, characterized in that: it includes a clamp body (12) with a vertical vertical plate, and the vertical vertical plate of the clamp body (12) is provided with a workpiece (4) that can be inserted and fixed The shouldered mandrel (3), the top of the vertical vertical plate of the clamp body (12) is fixed with a drilling template (8), the drilling template (8) is a groove structure, the lower end surface of the drilling template (8) and the workpiece (4) contact, the drilling template (8) is provided with a number of drilling holes, and the clamp body (12) is provided with supporting nails (1) for supporting and positioning the workpiece (4). 2. A machining fixture for a reducer case according to claim 1, characterized in that: a bushing (6) is arranged in the borehole, and a replaceable drill sleeve (5) is arranged in the bushing . 3 . The machining fixture for the reducer case according to claim 1 , characterized in that: drill sleeve screws ( 7 ) are arranged in the drilled holes. 4 . 4 . The machining fixture for a reducer case according to claim 1 , characterized in that: the vertical vertical plate of the fixture body ( 12 ) and the drilling template ( 8 ) are positioned through positioning pins ( 9 ). 5. A machining fixture for a reducer case according to claim 1, characterized in that: the drilling template (8) is fixed on the vertical vertical of the fixture body (12) by a slotted countersunk screw (10). board top. 6. The machining fixture of a reducer case according to claim 1, characterized in that: one end of the shouldered mandrel (3) is connected by the first hex nut (2) and the first spring washer The workpiece (4) is fixed on the shouldered mandrel (3). 7. A machining fixture for a reducer case according to claim 6, characterized in that: the other end of the shouldered mandrel (3) passes through the second hex nut and the second spring washer (11) The shoulder mandrel (3) is fixed on the vertical vertical plate of the clamp body (12).