CN2146317Y

CN2146317Y - Hand-operated perforator

Info

Publication number: CN2146317Y
Application number: CN 92215930
Authority: CN
Inventors: 俞耀勇; 姜汉荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-07-31
Filing date: 1992-07-31
Publication date: 1993-11-17
Anticipated expiration: 2002-07-31

Abstract

The utility model provides an improved borer. The periphery of the peripheral cutting edge of an upper mould is distributed to a cosine curve whose length is in a symmetry along an axial cord, and the periphery is inclined to inner circle direction to form an upper mould cutting edge by intersecting with the inner cavity of the upper mould. The inner hole of the upper mould is a thread hole which is matched with the thread of a rotary shaft. The hole of the front end of a lower mould is corresponding and matched to the outer circle of the upper mould. The back end of the lower mould is provided with an inner hole, and a shaft extends out from the inner hole. The shaft is provided with a thrust bearing. The front end of the bearing is supported on the back end face of the lower mould, and the back end of the bearing is supported on the hexagon head convex shoulder of the shaft. A wrench turns the hexagon head of the rotary shaft, a thread pair pulls the upper mould tightly, and the cutting edge of the upper mould cuts into a sheet to complete boring.

Description

Hand-operated perforator

The utility model relates to a kind of improved card punch, particularly a kind of hand-made formula card punch.

Existing drilling tool has boring, adopts the punching of drilling machine or electric hand drill, needs the unsuitable on-the-spot water power worker operation of power supply, hand-made formula boring, and especially larger aperture boring, labour intensity is big, and the smear metal meeting influences the cleaning of equipment.Lathe is adopted in existing punching, and above-mentioned same defective is arranged.Adopt hand-made punching, can cause the workpiece moderate finite deformation, and under a lot of field condition, hand-made punching can't realize.

The purpose of this utility model provides a kind of hand-made formula drilling tool that is applicable to water power worker execute-in-place, and is easy to operate, drilling quality height.

The purpose of this utility model is achieved in that hand-made formula card punch is made up of upper and lower mould, the cutting edge of patrix cylindrical week the edge axis to the length cosine curve that is symmetry distribute, periphery inwardly circular direction tilts, intersect the cutting edge that constitutes patrix with last mold cavity, the endoporus of patrix is a screwed hole, this hole and front end are the screw thread combo of the turning cylinder of turret head for the screw thread rear end, the counterdie front end has a hole to cooperate with the patrix cylindrical to realize punching functions, there is a cavity at the counterdie middle part, be used for collecting the plate that downcut the punching back, there is an endoporus counterdie rear end, turning cylinder hole thus stretches out, adorn a thrust ball bearing on the axle, the front end of bearing is bearing on the counterdie rear end face, the bearing rear end is bearing on the turret head convex shoulder of axle, during use, on the plate of need punching, bore an aperture, small aperture should be slightly larger than the rotary shaft end major diameter of thread, the turning cylinder end of thread passes through from aperture, screw on patrix, after patrix compresses the plate that needs processing, rotate the turret head of turning cylinder with spanner, turning cylinder is strained patrix by screw thread pair, and the cutting edge contact sheet material of the periphery of patrix is rotated further turning cylinder, the cutting edge of patrix cosine curve shape is gone into sheet material in the effect incision of the axial force that screw thread pair produces, otch is ascending, with the plate complete resection, finishes punching functions at last.

The utility model as long as beat an aperture on the sheet material of equipment, just can be got required hole with hand easily when water power worker execute-in-place, this card punch is simple in structure, and operation is not only laborsaving but also convenient, and drilling is an extrusion process, plate can be because of punching distortion, drilling quality height.

Concrete structure of the present utility model is described in further detail by following examples and accompanying drawing thereof:

Fig. 1 is a kind of concrete structure longitudinal section of the utility model.

Fig. 2 is the cutaway view of part 1 among Fig. 1.

Fig. 3 is that the A of Fig. 2 is to view.

Fig. 4 is the cosine curve distribution map of part 1 cutting edge among Fig. 1.

With reference to Fig. 1, patrix 1, sheet material 2, counterdie 3, thrust ball bearing 4, the turning cylinder 5 that need punch.Hand-made formula card punch is made up of patrix 1, counterdie 3, thrust ball bearing 4 and turning cylinder 5, patrix 1 usefulness tool steel is made through heat treatment, with reference to Fig. 2 and Fig. 3, the cutting edge of patrix 1 cylindrical week the edge axis to the length cosine curve that is symmetry distribute, periphery inwardly circular direction tilts, the inclination angle is 30 °, intersect with patrix 1 inner chamber, constitute the cutting edge of patrix 1, this curve distribution is a contact when making cutting edge begin to contact with sheet material, enlarges punching otch scope with the step then, have best punching effect, the endoporus of patrix 1 inner chamber front end is a screwed hole.The front end of turning cylinder 5 is a screw thread, and interlude is a cylinder shaft body, and the rear end is a turret head, and the front end screw thread of axle 5 cooperates with the screwed hole of patrix 1.Counterdie 3 front ends have a hole, cooperate with the cylindrical of patrix 1, and its fit clearance 0.8-1.0 millimeter, there is a cavity at counterdie 3 middle parts, and cavity diameter is greater than the aperture of punching, and there is an endoporus counterdie 3 rear ends, and the aperture is less than the front cavity diameter, and axle 5 hole thus stretches out.Adorn a thrust ball bearing 4 on the axle 5, the front end of bearing 4 is bearing on counterdie 3 rear end faces, and the rear end of bearing 4 is bearing on the turret head convex shoulder of axle 5.When card punch was deposited, bearing 4 was installed in earlier on the axle 5, was inserted in counterdie 3 subsequently and screwed in patrix 1.During work, on sheet material to be processed 2, bore a hole earlier, the aperture should be slightly less than the major diameter of thread of axle 5, unload patrix 1, with axle 5 and counterdie 3, bearing 4 together, the thread segment of order axle 5 passes boring, screws in patrix 1 subsequently, makes patrix 1 and counterdie 3 push down sheet material 2, begin to punch and need to use the turret head of spanner turning cylinder 5, the cutting edge of patrix 1 is gone into sheet material in the responsive to axial force incision that screw thread pair produces, because patrix 1 cutting edge periphery is cosine distribution, the cutting condition of cutting edge incision is in optimum state, bearing 4 guarantees that the opposing end surface friction of counterdie 3 and axle 5 is minimum, thereby improve the effect of punching and improve the quality of punching, the plate of excision is deposited in the middle cavities that drops on counterdie 3.After punching finishes, take off patrix 1, pull out card punch and finish punch operation one time.

Claims

1, a hand-made formula card punch of forming by patrix 1 and counterdie 3, it is characterized in that the length of all edges of the cutting edge axis of patrix 1 cylindrical is the cosine curve distribution of symmetry, periphery inwardly circular direction tilts, intersect the cutting edge that constitutes patrix 1 with patrix 1 inner chamber, the endoporus of patrix 1 is a screwed hole, this hole and front end are the screw thread combo of the turning cylinder 5 of turret head for the screw thread rear end, counterdie 3 front ends have the cylindrical corresponding matching of a hole and patrix 1, there is a cavity at counterdie 3 middle parts, cavity diameter is greater than the aperture of punching, there is an endoporus counterdie 3 rear ends, axle 5 hole thus stretches out, adorn a thrust ball bearing 4 on the axle 5, the front end of bearing 4 is bearing on counterdie 3 rear end faces, and the rear end of bearing 4 is bearing on the turret head convex shoulder of axle 5.

2, card punch according to claim 1, the fit clearance that it is characterized in that counterdie 3 endoporus and patrix 1 cylindrical is 0.8 to 1.0 millimeter.

3,, it is characterized in that the inclination angle that the inside circular direction of patrix 1 periphery tilts is 30 ° according to claim 1,2 described card punch.