CN104785699A - Helical gear forming female mold beneficial to automatic demolding - Google Patents

Helical gear forming female mold beneficial to automatic demolding Download PDF

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Publication number
CN104785699A
CN104785699A CN201510173827.7A CN201510173827A CN104785699A CN 104785699 A CN104785699 A CN 104785699A CN 201510173827 A CN201510173827 A CN 201510173827A CN 104785699 A CN104785699 A CN 104785699A
Authority
CN
China
Prior art keywords
ring
helical gear
female mold
cavity
plane
Prior art date
Application number
CN201510173827.7A
Other languages
Chinese (zh)
Inventor
龚冬梅
许锋
石文超
吴泽
史家森
钱房房
程生
Original Assignee
皖西学院
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 皖西学院 filed Critical 皖西学院
Priority to CN201510173827.7A priority Critical patent/CN104785699A/en
Publication of CN104785699A publication Critical patent/CN104785699A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/02Dies or mountings therefor
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21JFORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
    • B21J13/00Details of machines for forging, pressing, or hammering
    • B21J13/08Accessories for handling work or tools
    • B21J13/14Ejecting devices

Abstract

The invention relates to a helical gear forming female mold beneficial to automatic demolding. The helical gear forming female mold comprises an inner ring and an outer ring connected with the inner ring in a sleeving mode. The inner ring is of a circular truncated cone structure formed by combining four corresponding sections, an inner cavity of the inner ring constitutes a helical gear forming tooth cavity, the outer side wall of the inner ring is an inclined plane intilted from top to bottom, the taper angle of the inclined plane ranges from 8 degrees to 12 degrees, grooves are inlaid in the middles of two side walls of each section, a compression spring is pressed in the space between the adjacent grooves of adjacent sections, the outer ring is provided with a circular truncated cone sleeving cavity matched with the inner ring, and the inner ring is pressed into the sleeving cavity of the outer ring. The female mold is simple in structure, convenient to operate, beneficial to automatic demolding and high in demolding efficiency.

Description

A kind of helical gear female die for forming being convenient to automatic demoulding
Technical field
The present invention relates to Mould Machining manufacturing technology field, specifically relate to a kind of helical gear female die for forming being convenient to automatic demoulding.
Background technology
Cylindric spiral gear Plastic Forming is a kind of helical gear manufacturing process being better than traditional machining, and the helical gear after Plastic Forming has that metal streamline is complete, gear anti-fatigue life is strong, stock utilization advantages of higher.But cylindric spiral gear is because its profile of tooth is with helical angle, and adopt the extrusion method inconvenience demoulding, force to eject, all can cause very big damage to gear and mould, release problems has become the maximum bottleneck of cylindric spiral gear Plastic Forming.Therefore, how to design a kind of device that can meet Plastic Forming cylindric spiral gear automatic demoulding and become a current important research topic.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of helical gear female die for forming being convenient to automatic demoulding.
For solving the problems of the technologies described above, the invention provides following technical scheme: a kind of helical gear female die for forming being convenient to automatic demoulding, the outer ring comprising inner ring and socket-connect with inner ring, described inner ring is the truncated cone-shaped structure combined by four corresponding lobe blocks, the inner chamber of described inner ring forms helical gear shaping tooth cavity, described inner ring lateral wall is intilted inclined plane from top to bottom, this inclined plane cone angle is 8-12 °, described lobe block both sides sidewall middle position is all embedded with groove, and between the adjacent grooves of adjacent petals block, press-in has a Compress Spring; Described outer ring is provided with the truncated cone-shaped mantle cavity matched with inner ring, and described inner ring is pressed in the mantle cavity of outer ring.
As preferred to one of the present invention, the inclined plane cone angle of described inner ring lateral wall is 10 °.
The beneficial effect that the present invention compared with prior art has is: die provided by the invention, after helical gear is shaped, its outer ring realizes the disengaging with inner ring under external force, inner ring realizes the separated from one another of four lobe blocks under the effect of four Compress Spring restoring forces, thus finally realize helical gear automatic demoulding object, structure is simple, and easy to operate, demoulding efficiency is high.
Accompanying drawing explanation
Fig. 1 is cavity die structure schematic diagram of the present invention;
Fig. 2 is outer ring structure schematic diagram of the present invention;
Fig. 3 is inner ring structure schematic diagram of the present invention;
Fig. 4 is the front view of inner ring lobe block of the present invention;
Fig. 5 is the top view of inner ring lobe block of the present invention.
Number in the figure is: 1-inner ring, 11-lobe block, 111-groove, 12-inclined plane, 2-outer ring, 21-mantle cavity, 3-Compress Spring.
Detailed description of the invention
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Known referring to figs. 1 through Fig. 5, a kind of helical gear female die for forming being convenient to automatic demoulding, the outer ring 2 comprising inner ring 1 and socket-connect with inner ring 1, described inner ring 1 is the truncated cone-shaped structure combined by four corresponding lobe blocks 11, the inner chamber of described inner ring 1 forms helical gear shaping tooth cavity, described inner ring 1 lateral wall is intilted inclined plane 12 from top to bottom, this inclined plane 12 cone angle is 8-12 °, optional 8 °, 10 °, 12 °, 10 ° are selected in the present embodiment, described lobe block 11 both sides sidewall middle position is all embedded with groove 111, between the adjacent grooves 111 of adjacent petals block 11, press-in has a Compress Spring 3, described outer ring 2 is provided with the truncated cone-shaped mantle cavity 21 matched with inner ring 1, and described inner ring 1 is pressed in the mantle cavity 21 of outer ring 2.
Die provided by the invention, after helical gear is shaped, its outer ring 2 realizes the disengaging with inner ring 1 under external force, inner ring 1 realizes the separated from one another of four lobe blocks 11 under the effect of four Compress Spring 3 restoring forces, thus finally realize helical gear automatic demoulding object, structure is simple, and easy to operate, demoulding efficiency is high.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (2)

1. be convenient to the helical gear female die for forming of automatic demoulding for one kind, it is characterized in that: the outer ring comprising inner ring and socket-connect with inner ring, described inner ring is the truncated cone-shaped structure combined by four corresponding lobe blocks, the inner chamber of described inner ring forms helical gear shaping tooth cavity, described inner ring lateral wall is intilted inclined plane from top to bottom, this inclined plane cone angle is 8-12 °, and described lobe block both sides sidewall middle position is all embedded with groove, and between the adjacent grooves of adjacent petals block, press-in has a Compress Spring; Described outer ring is provided with the truncated cone-shaped mantle cavity matched with inner ring, and described inner ring is pressed in the mantle cavity of outer ring.
2. a kind of helical gear female die for forming being convenient to automatic demoulding according to claim 1, is characterized in that: the inclined plane cone angle of described inner ring lateral wall is 10 °.
CN201510173827.7A 2015-04-10 2015-04-10 Helical gear forming female mold beneficial to automatic demolding CN104785699A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510173827.7A CN104785699A (en) 2015-04-10 2015-04-10 Helical gear forming female mold beneficial to automatic demolding

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510173827.7A CN104785699A (en) 2015-04-10 2015-04-10 Helical gear forming female mold beneficial to automatic demolding

Publications (1)

Publication Number Publication Date
CN104785699A true CN104785699A (en) 2015-07-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510173827.7A CN104785699A (en) 2015-04-10 2015-04-10 Helical gear forming female mold beneficial to automatic demolding

Country Status (1)

Country Link
CN (1) CN104785699A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06142816A (en) * 1992-10-28 1994-05-24 Aisin Seiki Co Ltd Method and device for taking out formed article with helical gear from forging machine
DE69311644T2 (en) * 1992-07-14 1998-01-15 O Oka Forge Co Ltd Device and method for forging a helical gear
CN2623438Y (en) * 2003-06-28 2004-07-07 遵义群建塑胶制品有限公司 Plastic helical gear mould
CN1911627A (en) * 2005-08-11 2007-02-14 株式会社理光 Forming die device for bevel wheel and product formed thereby
CN101428326A (en) * 2008-12-08 2009-05-13 江苏太平洋精密锻造有限公司 Automotive reverse gear intermediate gear tooth form final finishing and back taper forming mould
CN101879536A (en) * 2010-07-02 2010-11-10 洛阳理工学院 Method for forming helical gear by radial cold extrusion and die thereof
CN102248109A (en) * 2011-06-15 2011-11-23 浙江振华紧固件有限公司 Cold heading forming die
CN204620979U (en) * 2015-04-10 2015-09-09 皖西学院 A kind of helical gear female die for forming being convenient to automatic demoulding

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69311644T2 (en) * 1992-07-14 1998-01-15 O Oka Forge Co Ltd Device and method for forging a helical gear
JPH06142816A (en) * 1992-10-28 1994-05-24 Aisin Seiki Co Ltd Method and device for taking out formed article with helical gear from forging machine
CN2623438Y (en) * 2003-06-28 2004-07-07 遵义群建塑胶制品有限公司 Plastic helical gear mould
CN1911627A (en) * 2005-08-11 2007-02-14 株式会社理光 Forming die device for bevel wheel and product formed thereby
CN101428326A (en) * 2008-12-08 2009-05-13 江苏太平洋精密锻造有限公司 Automotive reverse gear intermediate gear tooth form final finishing and back taper forming mould
CN101879536A (en) * 2010-07-02 2010-11-10 洛阳理工学院 Method for forming helical gear by radial cold extrusion and die thereof
CN102248109A (en) * 2011-06-15 2011-11-23 浙江振华紧固件有限公司 Cold heading forming die
CN204620979U (en) * 2015-04-10 2015-09-09 皖西学院 A kind of helical gear female die for forming being convenient to automatic demoulding

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EXSB Decision made by sipo to initiate substantive examination
SE01 Entry into force of request for substantive examination
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Application publication date: 20150722