CN202367463U

CN202367463U - Fixture for machining symmetrical key slots at motor shaft ends

Info

Publication number: CN202367463U
Application number: CN2011204509830U
Authority: CN
Inventors: 堵伟峰
Original assignee: SEC Electric Machinery Co Ltd
Current assignee: SEC Electric Machinery Co Ltd
Priority date: 2011-11-15
Filing date: 2011-11-15
Publication date: 2012-08-08
Anticipated expiration: 2021-11-15

Abstract

The utility model discloses a fixture for machining symmetrical key slots at motor shaft ends. The fixture comprises V-shaped iron arranged below a shaft in a cushion mode, and a centering plate; the parallelism between the upper plane and the lower plane of the centering plate is less than or equal to 0.03mm, and the centering plate is fixed on screw holes on the end face of the shaft; and during operation, the centering plate is locked on the screw holes through bolts, tool setting is performed through the upper and lower planes of the centering plate, the jump of the two planes is controlled to be less than or equal to 0.03mm, and the bolts are locked for groove milling. On the premise of not changing the product structure, the centering plate is fixed on the end face of the shaft, and an angle between two symmetrical key slots of the motor shaft is indirectly detected by a method of dialing the upper plane of the centering plate by using a dial indicator, so that the centering accuracy and machining efficiency are improved, the operation is convenient, the accuracy is high and the generality is high.

Description

Motor shaft extension symmetry keyway clamp for machining

Technical field

The utility model relates to a part processing technique field, especially motor shaft extension symmetry keyway clamp for machining.

Background technology

In order to increase the transmission moment of torsion, part motor shaft extension place need adopt the symmetric double keyway, adds man-hour if two keyway symmetries are overproof, then can cause the both sides keyway can not be simultaneously stressed, thereby influence the transmission effect of moment of torsion, therefore needs the assurance machining accuracy.When motor shaft was heavier, it was uneconomic using special purpose machine tool to process symmetrical keyway, and on common boring and milling machine, adds man-hour; If carry out centering with a manufactured side switch groove; Because width of keyway is less, centering length is too short, causes the centering precision low; The symmetry requirement be can't satisfy, thereby machining accuracy and part quality influenced.

The utility model content

The applicant is to above-mentioned existing large-sized motor shaft extension symmetry keyway processing difficulties; The not high shortcoming of precision; A kind of motor shaft extension rational in infrastructure symmetry keyway clamp for machining is provided, thus convenient, correct assurance the symmetry requirement of keyway, and improved working (machining) efficiency.

The technical scheme that the utility model adopted is following:

A kind of motor shaft extension symmetry keyway clamp for machining comprises the V shape iron of pad in the axle bottom, also comprises the centering plate, and the last plane of said centering plate and the depth of parallelism≤0.03mm between the lower plane are fixed on through securing member on the screw of axial end.

The beneficial effect of the utility model is following:

The utility model is under the prerequisite that does not change product structure; Through the centering plate is fixed on the axial end, with the dial gauge method that table is played on the plane on the centering plate, the angle between the indirect detection motor shaft two symmetrical keyways; Thereby centering precision and processing work efficiency have been improved; Easy to operate, precision is high, highly versatile.

Description of drawings

Fig. 1 adds the clamping sketch map in man-hour for a side switch groove of the utility model.

Fig. 2 adds the clamping sketch map in man-hour for the opposite side keyway of the utility model.

The specific embodiment

Below in conjunction with accompanying drawing, the specific embodiment of the utility model is described.

Referring to Fig. 1, Fig. 2, the utility model comprises the V shape iron 9 of pad in the axle bottom, also comprises centering plate 4, and the last plane of centering plate 4 and the depth of parallelism≤0.03mm between the lower plane are fixed on through securing member on the screw 2 of axle 1 end face.

The concrete processing step that utilizes the utility model to process is following:

Step 1: after axle 1 Vehicle Processing is accomplished, on boring and milling machine, process earlier axial end screw 2;

Step 2: utilize bolt 3 to be locked at centering plate 4 on the axial end screw 2 of shaft end, flat surface grinding is passed through with lower plane 8 in the last plane 5 of centering plate 4, guarantees the depth of parallelism≤0.03mm on two planes up and down;

Step 3: by conventional clamping method with axle 1 clamping on common boring and milling machine, promptly at axle 1 two ends downside pad V shape iron 9, upside compresses with pressing plate, during clamping, approximate horizontal is answered on the last plane 5 of centering plate 4;

Step 4: dress dial gauge 6 on boring bar 7, on plane 5 on the centering plate 4, play table, beat and answer≤0.03mm; Overproof if beat, then utilize the gap between bolt 3 and the screw 2, the angle between adjustment centering plate 4 and the axle 1; Making beats reaches requirement, and clamping screw 3 then;

Step 5: by conventional presetting cutter method, find out axle 1 position of center line, mill out a side switch groove 10;

Step 6: with axle 1 together with centering plate 4 around shaft centre line Rotate 180 °, on the lower plane 8 of postrotational centering plate 4, play table with dial gauge 6, and the method through the fine setting rotating shaft, make to beat≤0.03mm;

Step 7: five same procedure mill out the symmetrical keyway 11 of opposite side set by step.

Claims

1. motor shaft extension symmetry keyway clamp for machining; Comprise the V shape iron (9) of pad in axle (1) bottom; It is characterized in that: also comprise centering plate (4); The last plane (5) of said centering plate (4) and the depth of parallelism≤0.03mm between the lower plane (8) are fixed on through securing member on the screw (2) of axle (1) end face.