CN203292410U - Forging die for inductive tooth - Google Patents

Forging die for inductive tooth Download PDF

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Publication number
CN203292410U
CN203292410U CN2012207241857U CN201220724185U CN203292410U CN 203292410 U CN203292410 U CN 203292410U CN 2012207241857 U CN2012207241857 U CN 2012207241857U CN 201220724185 U CN201220724185 U CN 201220724185U CN 203292410 U CN203292410 U CN 203292410U
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China
Prior art keywords
tooth
forging
die
inducing
roll
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Expired - Lifetime
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CN2012207241857U
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Chinese (zh)
Inventor
毕泗元
李宏伟
张宝东
陈利华
刘勇涛
王长顺
王思涛
刘彬
邬晓颖
任雁
杜德恒
王雪莲
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Beijing North Vehicle Group Corp
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Beijing North Vehicle Group Corp
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Priority to CN2012207241857U priority Critical patent/CN203292410U/en
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Abstract

The utility model belongs to the technical field of forging and relates to a forging die for an inductive tooth. By the forging die for the inductive tooth, a circular hole center can be easily found during the manufacturing process of the inductive tooth, so that the inductive tooth material utilization and work efficiency are improved. The forging die for the inductive tooth comprises an upper die and a lower die. A cavity formed by the upper die and the lower die comprises a finish forging V notch and a rolling V notch. Except for a flash gutter, other structures of the cavity are the same. A symmetric axis of the rolling V notch is a connecting line between two centers of circles of two half circle of the inductive tooth; and the finish forging V notch is transversly symmetrical with a connecting line between two centers of circles of the inductive tooth as an axis. By the use of the forging die for inductive tooth, two parts can be machined with one forging piece during the inductive tooth forging forming process, thereby reducing larger labor intensity and low material utilization; and by the use of the forging die for inductive tooth, the circular hole center can be easily found in the manufacturing method of the inductive tooth, so that the inductive tooth material utilization and work efficiency are improved and requirement for massive production is met.

Description

A kind of tooth forging die of inducing
Technical field
The invention belongs to technical field of forging, be specifically related to a kind of tooth forging die of inducing.
Background technology
Induce teeth material to belong to High Strength Wear-Resistance Material, hardness high (HB401~460), induce 166, the every chassis of tooth, produces radix very large.Be mainly used in 502,534,502 change, the model vehicle such as 89B, in addition, also have a large amount of spare parts, the Multiple Type vehicles such as WZ326, WZ327, WZ8611, WZ8613, DP5004 also need with inducing tooth, annual output is more than 200,000.Adopt at present a forging to go out a part.
Because the distance of center circle of the small semicircle of inducing tooth φ 26 is 1mm from the vertical range of inducing the tooth lower edge, if only by inducing odontoid design forging, the hole of the small semicircle of the φ 26 on the boss that height of inducing tooth is 23mm is difficult to processing.Expand the height dimension 23mm of boss to 38mm when carrying out the forging drawing design, the method stock utilization is low, and workman's labour intensity is large and production efficiency is low.
Summary of the invention
The technical problem that the present invention solves is to propose a kind of tooth forging die of inducing, be used for inducing the tooth forging and molding to realize that a forging process goes out two parts, solve the problem that labor strength is large, stock utilization is low, the solution machine in the tooth manufacture method of inducing adds the problem that is difficult to find accurately center of circular hole, improved and induced teeth material utilization rate and production efficiency, met the needs of batch production.
Technical scheme of the present invention is: a kind of tooth forging die of inducing, comprise upper die and lower die, the die cavity of upper die and lower die, comprise finishing cavity, roll-down type groove, the patrix finishing cavity does not comprise flash gutters, the finishing cavity of counterdie comprises flash gutters, and it is identical with the structure of the finishing cavity of patrix, roll-down type groove respectively that counterdie is removed finishing cavity outside flash gutters, roll-down type groove; Described roll-down type groove is take the circle center line connecting position of inducing two semicircles of tooth hot forging as symmetry axis, up and down is symmetrical, be roll-down type geosynclinal convex platform top edge position be the height dimension of inducing a boss of tooth forging to the size of symmetry axis, the roll-down type groove of symmetry the material folding mouth is set bottom, the sectional area at the symmetry axis place of roll-down type groove is the boss bottom area of inducing tooth; Described finishing cavity is that to induce two circle center line connecting positions of tooth hot forging be that axle is laterally zygomorphic, and the boss top edge is the height dimension of inducing a boss of tooth forging to the height of symmetry axis.
Especially, the height dimension of inducing a boss of tooth hot forging is 23mm and recruitment sum, and recruitment is that 23mm multiply by thermal coefficient of expansion.
Beneficial effect of the present invention:
1) the tooth mould of inducing of the present invention, make and induce tooth to go out a part by an original forging in the process of forging and molding, changes a forging into and go out two parts, and the machine that solved adds a difficult problem, greatly reduces workman's labour intensity.Forging workman and machined workman production efficiency all improves greatly;
2) the present invention, utilized roll-down type groove and the finishing cavity structure of inducing the tooth mould, realized inducing the tooth forging and molding to adopt a cover forging die, completed two processes of roll extrusion and finish-forging, improved productivity ratio.
3) the tooth mould of inducing of the present invention, make and induce tooth to adopt a forging to go out two parts in the process of forging and molding, reduced machine-finish allowance, improves material and the rate of utilization of work hour, reduces production costs.
Description of drawings
The present invention has 5 width accompanying drawings.
Fig. 1 a, 1b are structural representation of inducing the tooth forging die of the present invention;
The structural representation of inducing tooth that Fig. 2 a, 2b, 2c need to make;
Fig. 3 a, 3b produce induces forging schematic diagram in the tooth process;
Hot forging schematic diagram in Fig. 4 a, 4b the present invention;
Fig. 5 schematic diagram of inducing the roll-down type groove of tooth forging die of the present invention;
Wherein: 1-patrix, 2-roll-down type groove, 3-finishing cavity, 4-counterdie
The specific embodiment
Below in conjunction with accompanying drawing, the tooth mould of inducing of the present invention is described in detail.
Induce the design process of tooth forging die:
A kind of tooth forging die of inducing of the present invention, comprise upper die and lower die, the die cavity of upper die and lower die, comprise finishing cavity, roll-down type groove, the patrix finishing cavity does not comprise flash gutters, the finishing cavity of counterdie comprises flash gutters, and it is identical with the structure of the finishing cavity of patrix, roll-down type groove respectively that counterdie is removed finishing cavity outside flash gutters, roll-down type groove.
Induce the design principle of tooth Duan Mo to be:
According to the structure of inducing tooth as shown in Figure 2, due to lower edge apart from the small semicircle distance of center circle from being 1mm, if only when inducing odontoid design forging structure, the hole of small semicircle is difficult to processing, therefore, the straight line that when design forging structure, part is linked to be along two centers of circle carries out symmetry as axle, forms forging, as shown in Figure 3.Because forging (figure) is to design by two part symmetries, forging of machining process goes out two parts, form symmetrical structure and be convenient to the metal flow of forging process when forging, for the forming requirements reduction in blocking stage, be more convenient for operating, improved simultaneously the utilization rate of material.
Carry out the thermal expansion theory analysis according to forging drawing by material again, calculate the hot forging size, design the hot forging structure, take forging drawing material 42CrMo as example, carry out heating expansion computation, the size number of forging (figure) on duty take 1.015 (be forging size numerical value recruitment as the size number of forging on duty with thermal coefficient of expansion) calculate hot forging (figure) size, form hot forging structure (figure), according to hot forging physical dimension formation forging die structure and size.
Obtain hot forging structure and size according to Fig. 3 according to the material heat expansion rate as shown in Figure 4.
Induce roll-down type groove and the finishing cavity of tooth Duan Mo to have following structure:
Existing roll-down type groove is that lower end arranges the material folding mouth, the position of inducing the tooth boss corresponding with material folding mouth coupling part, its height expands 38mm to by the height of inducing the tooth boss (being illustrated in figure 2 as front view from top to bottom), add recruitment, recruitment is that the size number of forging is on duty with thermal coefficient of expansion, and the sectional area of roll-down type groove bottom is boss bottom (bottom) area of inducing tooth, (routine 38.6mm).
The roll-down type groove of tooth Duan Mo of inducing of the present invention improves existing roll-down type groove, roll-down type groove of the present invention is identical with the above part-structure in boss top edge position of the roll-down type groove of original structure, the following part in boss top edge position is the height dimension of a boss to the size of symmetry axis, the roll-down type groove is take the circle center line connecting position of inducing two semicircles of tooth hot forging as symmetry axis, (left and right of paper as shown in Figure 3) symmetry up and down, arrange the material folding mouth bottom at the roll-down type groove of symmetry; The sectional area at the symmetry axis place of roll-down type groove is boss bottom (bottom) area of inducing tooth.
Existing finishing cavity structure is to expand the height of boss (being illustrated in figure 2 as front view from top to bottom) to 38mm, adds recruitment, and recruitment is that the size number of forging is on duty with thermal coefficient of expansion, (routine 38.6mm).
The finishing cavity of tooth Duan Mo of inducing of the present invention improves existing finishing cavity, finishing cavity of the present invention be take former finishing cavity induce two circle center line connecting positions of tooth hot forging as axle laterally zygomorphic, one side of symmetry axis and the structural similarity of former finishing cavity, that is to say, one side of symmetry axis, the above structure of boss top edge is identical with existing forging type groove structure, the boss top edge is 23mm and recruitment sum to the height of symmetry axis, and recruitment is that 23mm multiply by thermal coefficient of expansion; The height of whole boss is 46mm and recruitment sum, and recruitment is that 46mm multiply by thermal coefficient of expansion, (routine 46.7mm).
The flash gutters of finishing cavity is identical with the flash gutters locations of structures of existing finishing cavity.
Induce the forging process of tooth to be, the round bar of heating is put into the roll-down type groove of inducing the tooth forging die carry out roll extrusion, make blank be full of the roll-down type groove, then blank is put into the finishing cavity of inducing the tooth forging die, unnecessary metal pours in flash gutters.
Induce the machining process of tooth to be: first to make a call to two centre bores on the axis of the blank that above-mentioned steps obtains, the diameter of centre bore is identical with the diameter of the semicircle of inducing tooth, the distance of center circle of the distance in two centre bore centers of circle and two semicircles of inducing tooth is from identical, take axis as benchmark, the processing capacity the during cutting of both sides, axis is 1mm.
Guarantee the product design dimensional requirement, make a call to simultaneously a hole and namely can produce two parts, increased substantially production efficiency.The method i.e. solution machine adds a difficult problem, reduces waste of material, enhances productivity again simultaneously due to the more rational flowing forming that is more conducive to metal of the symmetrical metal charge distribution of forging.

Claims (2)

1. induce the tooth forging die for one kind, comprise upper die and lower die, it is characterized in that, the die cavity of upper die and lower die, comprise finishing cavity, roll-down type groove, the patrix finishing cavity does not comprise flash gutters, and the finishing cavity of counterdie comprises flash gutters, and it is identical with the structure of the finishing cavity of patrix, roll-down type groove respectively that counterdie is removed finishing cavity outside flash gutters, roll-down type groove; Described roll-down type groove is take the circle center line connecting position of inducing two semicircles of tooth hot forging as symmetry axis, up and down is symmetrical, be roll-down type geosynclinal convex platform top edge position be the height dimension of inducing a boss of tooth forging to the size of symmetry axis, the roll-down type groove of symmetry the material folding mouth is set bottom, the sectional area at the symmetry axis place of roll-down type groove is the boss bottom area of inducing tooth; Described finishing cavity is that to induce two circle center line connecting positions of tooth hot forging be that axle is laterally zygomorphic, and the boss top edge is the height dimension of inducing a boss of tooth forging to the height of symmetry axis.
2. a kind of tooth forging die of inducing according to claim 1, is characterized in that, the height dimension of inducing a boss of tooth hot forging is 23mm and recruitment sum, and recruitment is that 23mm multiply by thermal coefficient of expansion.
CN2012207241857U 2012-12-26 2012-12-26 Forging die for inductive tooth Expired - Lifetime CN203292410U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012207241857U CN203292410U (en) 2012-12-26 2012-12-26 Forging die for inductive tooth

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012207241857U CN203292410U (en) 2012-12-26 2012-12-26 Forging die for inductive tooth

Publications (1)

Publication Number Publication Date
CN203292410U true CN203292410U (en) 2013-11-20

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103832494A (en) * 2014-03-25 2014-06-04 北京北方车辆集团有限公司 Track induction device of track-laying vehicle
CN105414895A (en) * 2015-12-08 2016-03-23 哈尔滨东安发动机(集团)有限公司 Machining method of flange plate taper sleeve

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103832494A (en) * 2014-03-25 2014-06-04 北京北方车辆集团有限公司 Track induction device of track-laying vehicle
CN105414895A (en) * 2015-12-08 2016-03-23 哈尔滨东安发动机(集团)有限公司 Machining method of flange plate taper sleeve
CN105414895B (en) * 2015-12-08 2020-04-24 哈尔滨东安发动机(集团)有限公司 Machining method of flange taper sleeve

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Granted publication date: 20131120

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