CN107442656B

CN107442656B - Forming die of automobile brake disc cover plate

Info

Publication number: CN107442656B
Application number: CN201710723630.5A
Authority: CN
Inventors: 曹萍清
Original assignee: Shanghai Aolin Car Fittings Co Ltd
Current assignee: Shanghai Aolin Car Fittings Co Ltd
Priority date: 2017-08-22
Filing date: 2017-08-22
Publication date: 2023-08-01
Anticipated expiration: 2037-08-22
Also published as: CN107442656A

Abstract

The invention relates to a forming die of an automobile brake disc cover plate, which comprises an upper die assembly and a lower die assembly, wherein a blanking punch, a forming punch, a trimming punch, a primary flanging punch, a secondary flanging punch and a punching punch are sequentially arranged in the upper die assembly along the material conveying direction, a female die matched with each punch of the upper die assembly is arranged in the lower die assembly, and an outer guide pillar for conveying a metal plate to be processed is arranged in the lower die assembly. Compared with the prior art, the 6 working procedures can be completed by adopting one die, so that the required staff is less, the production efficiency is improved, and the cost is greatly reduced; the production mode of slow wire feeding is adopted, and the processing precision can be greatly improved by arranging the inner guide post and the positioning pin, so that the product size is stable, and burrs are reduced; meanwhile, SKH51 is adopted as a processing cutter, so that the service life of the die is prolonged.

Description

Forming die of automobile brake disc cover plate

Technical Field

The invention relates to the technical field of dies, in particular to a forming die for an automobile brake disc cover plate.

Background

The automobile brake disc cover plate, commonly called a fender, is a plate structure arranged behind an outer frame of a wheel, and most of the use in China is mainly plastic fenders at present. However, since plastic products are not broken by the spilled stones, bricks and other unidentified objects of vehicles running on the road surface at high speed and are not broken by severe weather such as severe cold and heat, the quality of mud guards is not satisfied by the current domestic automobile manufacturers. The foreign mud guard often adopts the metal mud guard, but because manufacturing cost is high, domestic manufacturers introduce few to adopt, so how to reduce the manufacturing cost of the metal mud guard has great significance to improve company competitiveness.

At present, the production of the metal automobile brake disc cover plate comprises six working procedures, namely blanking, forming, trimming, primary flanging, secondary flanging and punching, wherein the process needs 6 personal operations, the productivity of 8 hours is 2500PCS, and the productivity is low.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the forming die for the automobile brake disc cover plate, which has high production capacity and low cost.

The aim of the invention can be achieved by the following technical scheme: the utility model provides a forming die of car brake disc apron, this mould includes mould subassembly and lower mould subassembly, set gradually blanking drift, shaping drift, deburring drift, primary flanging drift, secondary flanging drift and punching punch along the material transporting direction in the mould subassembly, be equipped with in the lower mould subassembly with each drift assorted die of last mould subassembly, be equipped with the outer guide pillar that is used for transporting the sheet metal that waits to process in the lower mould subassembly, during processing, go up mould subassembly and lower mould subassembly compound die, carry out blanking, shaping, deburring, primary flanging, secondary flanging and punching a hole to the sheet metal respectively, then go up mould subassembly and lower mould subassembly and separate, outer guide pillar will wait to process sheet metal backward and remove a station, make former blanking processed sheet metal remove to shaping processing's station, former shaping processed sheet metal removes to deburring processing's station, and so on. By adopting the die, 6 working procedures can be completed by only one die, namely, 1 person is required to operate every day, the 8-hour productivity is 10000PCS, and the production efficiency is greatly improved.

The outer guide posts are vertically arranged on two long side edges of the lower die assembly, the top ends of the outer guide posts are provided with rollers, and the rollers are in contact connection with the side edges of the metal plates to be processed.

And a plurality of positioning pins are arranged on each station in the lower membrane assembly.

The lower die assembly comprises a lower die plate, a lower backing plate and a lower die holder which are sequentially arranged from top to bottom, and the female die assembly is respectively arranged on the lower die plate.

The upper die assembly comprises an upper die seat, an upper base plate, an upper fixed plate, a baffle plate and a stripper plate which are sequentially arranged from top to bottom, and the blanking punch, the forming punch, the trimming punch, the primary flanging punch, the secondary flanging punch and the punching punch are arranged at the bottom of the stripper plate.

The bottom of the stripper plate is provided with a nitrogen spring. In order to prevent the metal plate to be processed from rising together with the upper die unit after die assembly, a nitrogen spring is arranged to enable the metal plate to be processed to be separated from the upper die unit, the stripping force is uniform, and the phenomena of no stripping and clamping of materials are seldom caused.

The bottom of the stripper plate is provided with an inner guide pillar for controlling the descending direction of the upper die assembly. Through interior guide pillar and the locating pin of setting in lower membrane module, can improve positioning accuracy greatly, improve product quality.

The blanking punch, the forming punch, the trimming punch, the primary flanging punch, the secondary flanging punch and the punching punch adopt cutters made of SKH 51. SKH-51 is tungsten-containing high-speed tool steel and is characterized in that: 1. high wear resistance; 2. high compressive strength; 3. high surface hardness after hardening; 4. excellent overall hardenability; 5. good surface treatment processability; 6. excellent tempering softening resistance, thereby ensuring that the knife edges of the lower die insert block and the like are not easy to break. The upper die holder and the lower die holder are both made of cast iron, so that the rigidity of the die is ensured, and the die is not damaged.

The die adopts a processing mode of slow wire feeding, the processing precision is greatly improved, the product size is stable, and burrs are reduced by adopting the processing mode.

Compared with the prior art, the invention has the following beneficial effects:

(1) The 6 working procedures can be completed by adopting one die, so that the required staff is less, the production efficiency is improved, and the cost is greatly reduced;

(2) The production mode of slow wire feeding is adopted, and the processing precision can be greatly improved by arranging the inner guide post and the positioning pin, so that the product size is stable, and burrs are reduced;

(3) The SKH51 is used as a processing cutter, so that the service life of the die is prolonged;

(4) The nitrogen spring is arranged in the upper die assembly, so that the metal plate to be processed is separated from the upper die unit, the stripping force is uniform, and the phenomena of no stripping and clamping of the material rarely occur.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the upper die assembly of the present invention;

FIG. 3 is a schematic view of the structure of the lower membrane module of the present invention.

Wherein 1 is an upper die assembly, 11 is an upper die base, 12 is an upper base plate, 13 is an upper fixed plate, 14 is a baffle plate, 15 is a stripper plate, 151 is a blanking punch, 152 is a forming punch, 153 is a trimming punch, 154 is a primary flanging punch, 155 is a secondary flanging punch, 156 is a punching punch, 157 is a nitrogen spring, 158 is an inner guide post, 2 is a lower die assembly, 21 is a lower die plate, 211 is an outer guide post, 212 is a locating pin, 22 is a lower base plate, and 23 is a lower die base.

Detailed Description

The following describes in detail the examples of the present invention, which are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of protection of the present invention is not limited to the following examples.

Example 1

The forming die of the automobile brake disc cover plate has a structure as shown in fig. 1, and comprises an upper die assembly 1 and a lower die assembly 2, wherein the lower die assembly 2 comprises a lower die plate 21, a lower base plate 22 and a lower die holder 23 which are sequentially arranged from top to bottom, the die assemblies are respectively arranged on the lower die plate 21, and the upper die assembly 1 comprises an upper die holder 11, an upper base plate 12, an upper fixing plate 13, a stop plate 14 and a stripper plate 15 which are sequentially arranged from top to bottom.

The stripper plate in the upper die assembly 1 is provided with a blanking punch 151, a forming punch 152, a trimming punch 153, a primary flanging punch 154, a secondary flanging punch 155 and a punching punch 156 in this order along the material conveying direction, and the bottom of the stripper plate 15 is provided with a nitrogen spring 157. In order to prevent the metal plate to be processed from rising together with the upper die unit after die assembly, a nitrogen spring 157 is arranged to enable the metal plate to be processed to be separated from the upper die unit, the stripping force is uniform, and the phenomena of no stripping and clamping are seldom caused; meanwhile, an inner guide pillar 158 for controlling the descending direction of the upper die assembly 1 is arranged at the bottom of the stripper plate 15. By the inner guide post 158 and the positioning pin 212 provided in the lower membrane module, positioning accuracy can be greatly improved, and product quality can be improved, as shown in fig. 2.

The lower die assembly 2 is internally provided with female dies matched with the punches of the upper die assembly 1, the lower die assembly 2 is internally provided with an outer guide pillar 211 for transporting the metal plate to be processed, the outer guide pillar 211 is vertically arranged on two long side edges of the lower die assembly 2, the top end of the outer guide pillar 211 is provided with a roller, and the roller is in contact connection with the side edge of the metal plate to be processed. A plurality of locating pins 212 are provided at each station in the lower membrane module, as shown in fig. 3.

During processing, the upper die assembly 1 and the lower die assembly 2 are assembled to respectively carry out blanking, forming, trimming, primary flanging, secondary flanging and punching on the plate, then the upper die assembly 1 and the lower die assembly 2 are separated, the outer guide post 211 moves the metal plate to be processed backwards by one station, the plate subjected to the original blanking processing is moved to the forming processing station, the plate subjected to the original forming processing is moved to the trimming processing station, and the like. By adopting the die, 6 working procedures can be completed by only one die, namely, 1 person is required to operate every day, the 8-hour productivity is 10000PCS, and the production efficiency is greatly improved.

The blanking punch 151, the forming punch 152, the trimming punch 153, the primary flanging punch 154, the secondary flanging punch 155, and the punching punch 156 use a cutter made of SKH 51. SKH-51 is tungsten-containing high-speed tool steel and is characterized in that: 1. high wear resistance; 2. high compressive strength; 3. high surface hardness after hardening; 4. excellent overall hardenability; 5. good surface treatment processability; 6. excellent tempering softening resistance, thereby ensuring that the knife edges of the lower die insert block and the like are not easy to break. The upper die holder and the lower die holder are both made of cast iron, so that the rigidity of the die is ensured, and the die is not damaged.

Claims

1. The forming die for the automobile brake disc cover plate comprises an upper die assembly and a lower die assembly, and is characterized in that a blanking punch, a forming punch, a trimming punch, a primary flanging punch, a secondary flanging punch and a punching punch are sequentially arranged in the upper die assembly along the material conveying direction, a female die matched with each punch of the upper die assembly is arranged in the lower die assembly, an outer guide post for conveying a metal plate to be processed is arranged in the lower die assembly, the upper die assembly and the lower die assembly are assembled during processing, blanking, forming, trimming, primary flanging, secondary flanging and punching are respectively carried out on the plate, then the upper die assembly and the lower die assembly are separated, the outer guide post moves the metal plate to be processed backwards by one station, the plate to be processed by the original blanking is moved to a forming processing station, the plate to be processed by the original forming processing is moved to a trimming processing station, and the like;

the outer guide posts are vertically arranged on two long side edges of the lower die assembly, the top ends of the outer guide posts are provided with rollers, and the rollers are in contact connection with the side edges of the metal plate to be processed;

2. The mold for forming the cover plate of the automobile brake disc according to claim 1, wherein a plurality of positioning pins are arranged on each station in the lower mold assembly.

3. The molding die of an automobile brake disc cover plate according to claim 1 or 2, wherein the lower die assembly comprises a lower die plate, a lower backing plate and a lower die holder which are sequentially arranged from top to bottom, and the female die is arranged on the lower die plate.

4. The mold for forming the cover plate of the automobile brake disc according to claim 1, wherein the bottom of the stripper plate is provided with a nitrogen spring.

5. The forming die for the automobile brake disc cover plate according to claim 1, wherein the stripper plate is provided with an inner guide post at the bottom for controlling the descending direction of the upper die assembly.

6. The forming die for the automobile brake disc cover plate according to claim 1, wherein the blanking punch, the forming punch, the trimming punch, the primary flanging punch, the secondary flanging punch and the punching punch are made of cutters made of SKH 51.

7. The forming die for the automobile brake disc cover plate according to claim 1, wherein the die adopts a slow wire-moving processing mode.