CN103599985A

CN103599985A - Bar chamfering and punching device during bolt processing

Info

Publication number: CN103599985A
Application number: CN201310564526.8A
Authority: CN
Inventors: 唐海龙
Original assignee: GUILIN FUDA QUANZHOU HIGH STRENGTH BOLT CO Ltd
Current assignee: Faldan state Beijing Great Automotive Components Company Limited
Priority date: 2013-11-14
Filing date: 2013-11-14
Publication date: 2014-02-26
Anticipated expiration: 2033-11-14
Also published as: CN103599985B

Abstract

A bar chamfering and punching device during bolt processing comprises a punching machine. A lower template is mounted on a workbench of the punching machine, a lower die seat is placed on the lower template, and a chamfering die is mounted on the lower die seat; the chamfering die is arranged for a punch punching a hole for moving vertically, and the lower die seat is used for an ejector rod with the punch on the upper portion punching a hole for moving vertically; the hole central line of the chamfering die, the central line of the punch, the central line of the ejector rod, the hole central line of the lower die seat are coincided; the lower portion of the ejector rod penetrates a through hole of a material ejecting plate and positions the material ejecting plate on the vertical height, and springs are arranged below the material ejecting plate capable of sliding vertically along screws; the lower portions of the screws are fixed with a skid plate, the upper portions of the screws penetrate the through holes of the lower template,and nuts are screwed below the lower template. According to the device, two procedures of chamfering and punching in the prior are are combined as one procedure, chamfering and punching are completed through the punching machine by one time, producing efficiency is improved greatly, producing quality is improved obviously, and rejection rate is reduced greatly.

Description

The device of bar chamfering punching in bolt process

Technical field

The present invention relates to machining, the specifically processing of bolt, the more specifically device of bar chamfering punching in bolt process.

Background technology

Bar chamfering and boring are two steps in bolt process.The production technology of bolt processing is: blanking → chamfering → boring → punch forming → modified → numerical control finish turning.Chamfering is can put smoothly mould into for operation punch forming below, and boring is in order to obtain the fabrication hole of subsequent handling numerical control finish turning, is convenient to tailstock movable thimble and withstands processing.

Present chamfering is to operate on lathe, about 6000 left and right of output of everyone per tour, and boring is to complete on bench drill, bench drill is holed the output of everyone per tour 4000 left and right, and boring axiality is poor, and follow-up numerical control finish turning operation is had to larger impact, easily produces waste product.Drill bit is very expensive in addition, and reconditioning is also difficult to, and makes production cost higher.Therefore, chamfering and the bottleneck of having holed into production.

Summary of the invention

In order to solve bar chamfering and this difficult problem of boring in prior art, the invention provides the device of bar chamfering punching in a kind of bolt process.

In bolt process of the present invention, the device of bar chamfering punching, comprises forcing press, and its lower bolster is placed on the workbench of forcing press, and die shoe is placed on lower bolster, and chamfering mould is placed on die shoe;

Chamfering mould is provided for the up and down hole of pierce punch, and die shoe is provided for push rod together with the up and down hole of the pierce punch on push rod top;

The centerline hole of chamfering mould, the center line of pierce punch, the center line of push rod and the centerline hole of die shoe overlap;

Push rod bottom is passed the through hole of die pad and in vertical height, is positioned die pad, under the die pad that can slide up and down along screw rod, spring is set;

Screw rod bottom is fixed wtih skid plate, and the through hole of lower bolster is through screw rod top, and nut is threaded onto on lower bolster.

Device of the present invention, is merged into by the chamfering in prior art and boring two procedures that a present procedure---chamfering punching once completes on forcing press.

Bar is placed in chamfering mould, when press ram moves downward, die shank can be bar toward pressing down, bar enters chamfering mould chamfering band just just can realize chamfering punching with pierce punch punching press, the size of chamfering can be by chamfering mould chamfering band and the high control of press ram envelope, slide block declines, and bar presses down pierce punch, and push rod below also can drive ejection block Compress Spring, final push rod bottom contacts and stops with skid plate below, and pierce punch is just gone out fabrication hole below bar.When slide block rises, spring reset, ejects chamfering band bar, just can easily take out bar.

The nut that the punching degree of depth can be threaded onto on lower bolster by adjusting is controlled.Here, be actually the distance that regulates lower bolster and skid plate.To on nut, revolve, because lower bolster is placed on the workbench of forcing press, so lower bolster actual be motionless, skid plate moves down, the distance of lower bolster and skid plate strengthens.Like this, when press ram presses down, the stroke that final push rod bottom contacts with skid plate is below just elongated, and the pierce punch above push rod just shoals to the punching of bar.If contrary to nut backspin, finally the punching of bar is just deepened.

For fixing chamfering mould better, guarantee the quality of chamfering and punching, chamfering mould is fixed on die shoe by die cap and bolt.

In the present invention, die shoe is placed on lower bolster actively.Dismantle so more easily die shoe and chamfering mould.

For resilience die pad spring after press pressure relief, be positioned on skid plate, both can be set on screw rod, also can be set on the push rod bottom through die pad through hole, can also all arrange at screw rod and push rod bottom.From stability, at screw rod and push rod bottom, the best is all set, be set on screw rod and take second place, the push rod bottom being set on through die pad through hole is worst.

From the convenient disassembly of device, consider, also, for the ease of regulating pierce punch height, skid plate is fixed on screw rod bottom by nut.Such consideration, actually, regulates pierce punch height just to have two schemes: the one, and foregoing adjusting is threaded onto the nut on lower bolster, and the second is exactly to regulate the fixedly nut of skid plate.

Device of the present invention is simple and practical, convenient adjusting, chamfer mould can be purchased outside, die life can reach millions of times, drift can be manufactured voluntarily, then high-frequency quenching just can, can Reusability, cost is lower, because mould is all open type, not contact relatively, therefore safer, quality is also obviously good, because bar and drift are all placed in mould, the centerline hole of chamfering mould, the center line of pierce punch, the center line of push rod and the centerline hole of die shoe are again four coincidences, so punching axiality can guarantee.

Experiment showed, and use this device, production efficiency improves greatly, and output per manshift is 8000 left and right, is 2 times of prior art.And product quality obviously improves, percent defective reduces greatly.

Accompanying drawing explanation

Fig. 1 is the device schematic diagram of bar chamfering punching in bolt process of the present invention.

The specific embodiment

See Fig. 1.

Lower bolster 11 is placed on the workbench of forcing press (not drawing in figure), and die shoe 8 is placed on lower bolster 11, and chamfering mould 4 is placed on die shoe 8;

Chamfering mould 4 is provided for the up and down hole of pierce punch 6, and die shoe 8 is provided for push rod 13 together with the up and down hole of pierce punch 6 on push rod 13 tops;

The centerline hole of the center line of the center line of the centerline hole of chamfering mould 4, pierce punch 6, push rod 13 and die shoe 8 overlaps;

Push rod 13 bottoms are passed the through hole of die pad 12 and in vertical height, are positioned die pad 12, and the die pad that can slide up and down along screw rod 9 arranges spring 14 12 times;

Screw rod 9 bottoms are fixed wtih skid plate 15, and the through hole of lower bolster 11 is through screw rod 9 tops, and nut 10 is threaded onto on lower bolster 11.

Chamfering mould 4 is fixed on die shoe 8 by die cap 5 and bolt 7.

Die shoe 8 is placed on lower bolster 11 actively.

Spring 14 is set on screw rod 9.

Skid plate 15 is fixed on screw rod 9 bottoms by nut (there is no mark in figure).

Utilize the device of bar chamfering punching in bolt process of the present invention, the operation of carrying out the punching of bar chamfering is: blanking → chamfering punching → punch forming → modified → numerical control finish turning, thus original two procedures is merged into a present procedure.Chamfering punching is carried out on forcing press, and bar 3 is placed in chamfering mould 4, has pierce punch 6 below.Lower bolster 11 is placed on the workbench of forcing press, and when press ram 1 moves downward, die shank 2 can be bar 3 toward pressing down, and bar 3 enters the chamfering band of chamfering mould 4, thereby completes chamfering.The size of chamfering can be by mould and the high control of press ram 1 envelope.

Press ram 1 declines, and bar 3 presses down pierce punch 6, and push rod 13 below also can press down die pad 12, and Compress Spring 14, and final push rod bottom 13 contacts with skid plate 15 below.At this moment pierce punch 6, push rod 13, die pad 12 all can not decline again, so just form and make a concerted effort with the press ram 1 declining, pierce punch 6 is just gone out fabrication hole in the bottom of bar.

Press ram 1 rises afterwards, and spring 14 resets, and die pad 12, push rod 13, pierce punch 6 is made progress and is pushed up, thereby bar 3 is ejected to the chamfering band of chamfering mould 4, so just can easily take out bar 3.

Claims

1. the device of bar chamfering punching in bolt process, comprises forcing press, it is characterized in that: lower bolster is placed on the workbench of forcing press, and die shoe is placed on lower bolster, and chamfering mould is placed on die shoe;

2. according to the device of claim 1, it is characterized in that: chamfering mould is fixed on die shoe by die cap and bolt.

3. according to the device of claim 1, it is characterized in that: die shoe is placed on lower bolster actively.

4. according to the device of claim 1, it is characterized in that: spring is set on screw rod, and/or be set on the push rod bottom through die pad through hole, be positioned on skid plate.

5. according to the device of claim 1, it is characterized in that: skid plate is fixed on screw rod bottom by nut.