CN103480723A

CN103480723A - Hole punching device for side surface of terminal box

Info

Publication number: CN103480723A
Application number: CN201310463511.2A
Authority: CN
Inventors: 孙冬生; 范久卫
Original assignee: DALIAN YILIAN METAL FORMING Co Ltd
Current assignee: DALIAN YILIAN METAL FORMING Co Ltd
Priority date: 2013-09-30
Filing date: 2013-09-30
Publication date: 2014-01-01

Abstract

A hole punching device for the side surface of a terminal box comprises an upper die plate, a male die fixing plate, a screw I, a die shank, a hole punching male die, a guide column, a stripper plate, a female die, a female die cushion, a screw II, a screw III, a lower die plate and rubber. The male die fixing plate is fixed below the upper die plate through the screw I, the die shank is installed above the upper die plate, and the lower portion of the upper die plate is connected with the hole punching male die and the guide column. The hole punching male die sequentially penetrates through the male die fixing plate, the rubber and the stripper plate from top to bottom. The guide column is matched with the stripper plate and a guide hole in the female die coaxially in a sliding mode. The female die cushion is respectively connected with the female die and the lower die plate through the screw III and the screw II. The hole punching device can be used for punching a round hole in the side surface of the terminal box, the punched hole is smooth and burr-free, and damage to a machined work-piece is avoided.

Description

A kind of terminal box side surface punching die

Technical field

The present invention relates to a kind of mechanical workpieces production, relate in particular to a kind of terminal box side surface punching die.

Background technology

The terminal box that our factory is produced, the flitch after blanking, stretching, trimming and upper surface punching, flange hole technology processing, need to carry out punching processing to its side surface, in the original technology of our factory, the accurate positioning deficiency, go out hole smooth not, burr is more obvious, and the impaired possibility of processing work is larger; Punching for a long time, also can cause the punch cutting edge to be worn, when the degree of wear is larger, also can make the workpiece of producing produce burr, surface flatness reduces, for guaranteeing product quality, the punch cutting edge needs plain grinding to put the first edge on a knife or a pair of scissors, and punch cutting edge plain grinding puts the first edge on a knife or a pair of scissors, strengthened workman's working strength, lose the production time, reduced operating efficiency, increased entreprise cost.

Summary of the invention

The problems referred to above that exist for solving prior art, the present invention adopts following technical scheme:

A kind of terminal box side surface punching die, comprise cope match-plate pattern, punch retainer, screw I, die shank, piercing punch, guide pillar, stripper, die, die supporter, screw II, screw III, lower bolster, rubber;

Punch retainer is fixed on the below of cope match-plate pattern by the screw I, die shank is equipped with in the top of described cope match-plate pattern, and the below of described cope match-plate pattern also is connected with guide pillar with piercing punch;

Described piercing punch is from top to bottom successively through punch retainer, rubber and stripper, guide hole on described guide pillar and described stripper and die coaxially is slidably matched, and die supporter is connected with lower bolster with described die respectively with the screw II by the screw III.

The die steel material of described a kind of terminal box side surface punching die is selected microalloy Cr12MoV mould steel, the Technology for Heating Processing of mould steel is: after hot rolling, be heated to 1050 ?1150 ℃ carry out solution treatment, being as cold as soon 600 ℃ proceeds in 400-700 ℃ of stove and makes it isothermal transformation, be heated to 900-950 ℃ of oil quenching after machined, finally 150-200 ℃ of tempering.

Each individual components that forms described a kind of terminal box side surface punching die adopts Digit Control Machine Tool processing.

The invention has the beneficial effects as follows: the material selection microalloy Cr12MoV mould steel of punch and die, guaranteed die hardness, mould steel adopts above-mentioned Technology for Heating Processing, has reduced carbon emission, and quenching degree can be enhanced about more than once; The independent workpiece of Digit Control Machine Tool processing mold, improved the precision of independent workpiece; Be provided with four groups of secondary guide pillars, improved the stability in monolateral gap; Independent workpiece high accuracy processing and overall construction design optimization, reasonability and the stability in the monolateral gap of the present invention have been improved, the gap of punch and die is remained between 0.01-0.02mm, adopt above technical scheme, can go out the circular hole of terminal box side surface, and it is smooth to go out hole, without burr, to processing work without damage; Stable structure designs, and has extended the service time of a cutting edge plain grinding, has reduced the plain grinding frequency of punch cutting edge, has improved production efficiency and the production precision of terminal box.

The accompanying drawing explanation

The present invention has accompanying drawing 2 width:

Fig. 1 is front view of the present invention;

Fig. 2 is the top view of lower bolster.

In figure: 6011, cope match-plate pattern, 6021, punch retainer, 6031, the screw I, 6041, die shank, 6051, piercing punch, 6061, guide pillar, 6071, stripper, 6081, die, 6091, die supporter, 6032, screw II, 6033, the screw III, 6101, lower bolster, 6111, rubber.

The specific embodiment

Below in conjunction with specific embodiment, the present invention is further described:

A kind of terminal box side surface punching die, comprise cope match-plate pattern 6011, punch retainer 6021, screw I 6031, die shank 6041, piercing punch 6051, guide pillar 6061, stripper 6071, die 6081, die supporter 6091, screw II 6032, screw III 6033, lower bolster 6101, rubber 6111;

Punch retainer 6021 is fixed on the below of cope match-plate pattern 6011 by screw I 6031, die shank 6041 is equipped with in the top of described cope match-plate pattern 6011, and the below of described cope match-plate pattern 6011 also is connected with guide pillar 6061 with piercing punch 6051;

Described piercing punch 6051 is from top to bottom successively through punch retainer 6021, rubber 6111 and stripper 6071, described guide pillar 6061 coaxially is slidably matched with the guide hole on described stripper 6071 and die 6081, and die supporter 6091 is connected with lower bolster 6101 with described die 6081 respectively with screw II 6032 by screw III 6033.

Terminal box side surface punching processing process is as follows:

1, terminal box side surface punching die is fixed on forcing press;

2, by the terminal box after blanking, trimming, stretching, upper surface punching, flange hole technology processing, be placed in die 6081;

3, start forcing press, it is descending that die shank 6041 drives cope match-plate pattern 6011, and servo-actuated the coming downwards to groove of piercing punch 6051 offsets, and piercing punch 6051 continues to press down, and goes out the circular open of same piercing punch 6051 lower surface similar shapes at the terminal box side surface;

4, after punching finishes, forcing press resets, and cope match-plate pattern 6011 is up, and under the elastic force effect of rubber 6111, stripper 6071 separates piercing punch 6051 with die 6081.

Claims

1. a terminal box side surface punching die, is characterized in that: comprise cope match-plate pattern (6011), punch retainer (6021), screw I (6031), die shank (6041), piercing punch (6051), guide pillar (6061), stripper (6071), die (6081), die supporter (6091), screw II (6032), screw III (6033), lower bolster (6101), rubber (6111);

Punch retainer (6021) is fixed on the below of cope match-plate pattern (6011) by screw I (6031), die shank (6041) is equipped with in the top of described cope match-plate pattern (6011), and the below of described cope match-plate pattern (6011) also is connected with guide pillar (6061) with piercing punch (6051);

Described piercing punch (6051) is from top to bottom successively through punch retainer (6021), rubber (6111) and stripper (6071), described guide pillar (6061) coaxially is slidably matched with the guide hole on described stripper (6071) and die (6081), and die supporter (6091) is connected with lower bolster (6101) with described die (6081) respectively with screw II (6032) by screw III (6033).

2. a kind of terminal box side surface punching die according to claim 1, it is characterized in that: die steel material is selected microalloy Cr12MoV mould steel, the Technology for Heating Processing of mould steel is: be heated to 1050-1150 ℃ after hot rolling and carry out solution treatment, being as cold as soon 600 ℃ proceeds in 400-700 ℃ of stove and makes it isothermal transformation, be heated to 900-950 ℃ of oil quenching after machined, finally 150-200 ℃ of tempering.