CN204182916U - Powder metallurgical gear shaping mould - Google Patents

Powder metallurgical gear shaping mould Download PDF

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Publication number
CN204182916U
CN204182916U CN201420637287.4U CN201420637287U CN204182916U CN 204182916 U CN204182916 U CN 204182916U CN 201420637287 U CN201420637287 U CN 201420637287U CN 204182916 U CN204182916 U CN 204182916U
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CN
China
Prior art keywords
gear
punching
former
upper punch
annular groove
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
CN201420637287.4U
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Chinese (zh)
Inventor
连雄兵
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHONGQING SAIZHIYUAN GEAR MANUFACTURING Co Ltd
Original Assignee
CHONGQING SAIZHIYUAN GEAR MANUFACTURING Co Ltd
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Filing date
Publication date
Application filed by CHONGQING SAIZHIYUAN GEAR MANUFACTURING Co Ltd filed Critical CHONGQING SAIZHIYUAN GEAR MANUFACTURING Co Ltd
Priority to CN201420637287.4U priority Critical patent/CN204182916U/en
Application granted granted Critical
Publication of CN204182916U publication Critical patent/CN204182916U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a kind of powder metallurgical gear shaping mould, comprise shaping former, upper punch and undershoot, the lower surface of upper punch is provided with the annular protrusion coordinated with gear face annular groove; Undershoot comprises lower outside punching, Xia Zhongchong and Xia Sanchong, described lower outside punching, Xia Zhongchong and lower three centers rushed are equipped with central through hole, in lower, punching is sleeved in described lower outside punching, lower three punchings are sleeved in described lower middle punching, be provided with internal spline in the central through holes of lower three punchings, and lower three rush inner sleeve and are equiped with the forming core rod coordinated with internal spline; In lower, the external diameter of punching equals the large footpath of gear face annular groove, and the external diameter of lower three punchings equals the path of gear face annular groove, and the top of the central through hole of lower middle punching is provided with the flared section coordinated with the madial wall of gear face annular groove; The endoporus of shaping former is provided with internal gear, and on the outer wall of upper punch and lower outside punching, correspondence is provided with external gear, and the upper end of internal gear is the flared that tip diameter increases gradually along direction from the bottom up.

Description

Powder metallurgical gear shaping mould
Technical field
The utility model, in powder metallurgy casting technology field, is specifically related to a kind of shaping mould of powder metallurgical gear.
Background technology
Powder metallurgical gear is the powdered metal parts generally used in various automobile engine, by once-forming and finishing process, does not need other aftertreatment technologys, can reach dimension precision requirement completely, especially profile accuracy.Therefore, with compared with Conventional machining methods manufacture, all greatly reduce on material drops into and manufactures, it is the typical products embodying powder metallurgy feature.
As shown in Figure 1, be a kind of structural representation of roller gear, in the central through hole of this roller gear, be provided with spline, and the both ends of the surface complex structure of this roller gear, existing mould can not meet the forming requirements of this type gear well.And in punch forming process, upper punch and lower punch mechanism move gear compressing relative to shaping female mold, but can not discharge fast due to the air in forming cavity, cause the Forming Quality of gear poor.After mould is shaping, also there are some defects in gear, as surface irregularity, structure precision is not high, needs by Shape correction, to reach the dimensional requirement of design.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of powder metallurgical gear shaping mould, and this powder metallurgical gear mould can meet the shaping requirement of the gear with end face structure complexity.
For achieving the above object, the utility model provides following technical scheme:
A kind of powder metallurgical gear shaping mould, comprise shaping former, upper punch and undershoot, the lower surface of described upper punch is provided with the annular protrusion coordinated with gear face annular groove; Described undershoot comprises lower outside punching, Xia Zhongchong and Xia Sanchong, described lower outside punching, Xia Zhongchong and lower three centers rushed are equipped with central through hole, described lower middle punching is sleeved in described lower outside punching, described lower three punchings are sleeved in described lower middle punching, be provided with internal spline in the central through holes of described lower three punchings, and described lower three rush inner sleeve and are equiped with the forming core rod coordinated with described internal spline; The external diameter of described lower middle punching equals the large footpath of gear face annular groove, and the external diameter of described lower three punchings equals the path of gear face annular groove, and the top of the central through hole of described lower middle punching is provided with the flared section coordinated with the madial wall of gear face annular groove; The endoporus of described shaping former is provided with internal gear, and on the outer wall of described upper punch and lower outside punching, correspondence is provided with external gear, and the upper end being arranged on the internal gear on described shaping former endoporus is the flared that tip diameter increases gradually along direction from the bottom up.
Further, described upper punch and lower in rush to and correspondingly with gear profiled holes be provided with through hole.
Further, the external gear being arranged on described lower outside punching comprises superposed profiled section and is positioned at the section of cooling down of bottom, described in the large footpath of the section of cooling down be less than the large footpath of described profiled section.
Further, described shaping former comprises former cover and former core, and described former core retainer plate is contained in described former cover, and described internal gear is arranged in the endoporus of former core.
Further, described former puts and is provided with annular and is laid with guide rod hole for installing guide rod.
Further, be provided with location structure between described forming core rod and upper punch, described location structure comprises and is arranged on locating hole on described upper punch lower surface and is arranged on the positioning convex that forming core rod upper surface coordinates with described locating hole.
The beneficial effects of the utility model are:
Powder metallurgical gear shaping mould of the present utility model, by undershoot split is set to lower outside punching, Xia Zhongchong and Xia Sanchong, and the external diameter of lower middle punching is set to the large footpath equaling gear face annular groove, the external diameter of lower three punchings is set to the path equaling gear face annular groove, and the flared section coordinated with the madial wall of gear face annular groove is set on the top of the central through hole of Xia Zhongchong, by controlling lower outside punching during punching press, the stroke of Xia Zhongchong and lower three punchings, the shaping to gear lower surface can be realized, by arranging the annular protrusion that gear face annular groove coordinates on upper punch lower surface, the shaping to gear upper surface can be realized, by arranging forming core rod in Xia Sanchong, utilize the external splines of forming core rod, shaping can be carried out to gear center hole internal spline, by being arranged on internal gear on shaping former endoporus and being arranged on upper punch and the lower outside external gear rushed on periphery wall, the Shape correction to gear tooth can be realized, and by the upper end of internal gear is set to flared, gear can be facilitated to enter in shaping former.
Accompanying drawing explanation
In order to make the purpose of this utility model, technical scheme and beneficial effect clearly, the utility model provides following accompanying drawing to be described:
Fig. 1 is a kind of structural representation of roller gear;
Fig. 2 is the structural representation of the utility model powder metallurgical gear shaping mould embodiment.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, and to make those skilled in the art better can understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
As shown in Figure 2, be the structural representation of the utility model powder metallurgical gear shaping mould embodiment.The powder metallurgical gear mould of the present embodiment, comprises shaping former 1, upper punch 2 and undershoot 3, and the lower surface of upper punch 2 is provided with the annular protrusion 21 coordinated with gear 4 end face ring connected in star 41; Undershoot 3 comprises lower outside punching 31, lower middle punching 32 and lower three punchings 33, the center of lower outside punching 31, lower middle punching 32 and lower three punchings 33 is equipped with central through hole, in lower, punching 32 is sleeved in lower outside punching 31, lower three punchings 33 are sleeved in lower middle punching 32, be provided with internal spline 34 in the central through hole of lower three punchings 33, and lower three punching 33 inner sleeves are equiped with the forming core rod 35 coordinated with internal spline 34.Location structure is provided with between the forming core rod 35 of the present embodiment and upper punch 2, location structure comprises and is arranged on locating hole on upper punch 2 lower surface 22 and is arranged on the positioning convex 36 that forming core rod 25 upper surface coordinates with locating hole 22, the exactitude position between undershoot 3 and upper punch 2 can be realized, ensure gear forming.
In lower, the external diameter of punching 32 equals the large footpath of gear 4 end face ring connected in star 41, the external diameter of lower three punchings 33 equals the path of gear 4 end face ring connected in star 41, and the top of the central through hole of lower middle punching 32 is provided with the flared section 37 coordinated with the madial wall of gear face annular groove 41, for the madial wall of forming gear 4 end face ring connected in star 41, in like manner, the outer wall top of lower middle punching 32 is provided with the chamfering coordinated with gear 4 end face ring connected in star 41 lateral wall.The endoporus of shaping former 1 is provided with internal gear 11, and on the outer wall of upper punch 2 and lower outside punching 31, correspondence is provided with external gear, and the upper end being arranged on the internal gear 11 on shaping former 1 endoporus is the flared that tip diameter increases gradually along direction from the bottom up.The shaping former 1 of the present embodiment comprises former cover 12 and former core 13, and former core 13 is sleeved in former cover 12, and internal gear 11 is arranged in the endoporus of former core 13.Former cover 13 is provided with annular and is laid with guide rod hole 14 for installing guide rod.
Further, correspondingly with gear profiled holes 42 in upper punch 1 and lower middle punching 32 be provided with through hole, during punch forming, core bar be set in through hole, can profiled holes once on compressing gear 4.
Further, the external gear being arranged on lower outside punching 31 comprises superposed profiled section 38 and is positioned at the section of cooling down 39 of bottom, and the large footpath of the section of cooling down 39 is less than the large footpath of profiled section 38, and the air in forming cavity is discharged fast, improves the Forming Quality of gear 4.
The powder metallurgical gear shaping mould of the present embodiment, by undershoot split is set to lower outside punching, Xia Zhongchong and Xia Sanchong, and the external diameter of lower middle punching is set to the large footpath equaling gear face annular groove, the external diameter of lower three punchings is set to the path equaling gear face annular groove, and the flared section coordinated with the madial wall of gear face annular groove is set on the top of the central through hole of Xia Zhongchong, by controlling lower outside punching during punching press, the stroke of Xia Zhongchong and lower three punchings, the shaping to gear lower surface can be realized, by arranging the annular protrusion that gear face annular groove coordinates on upper punch lower surface, the shaping to gear upper surface can be realized, by arranging forming core rod in Xia Sanchong, utilize the external splines of forming core rod, shaping can be carried out to gear center hole internal spline, by being arranged on internal gear on shaping former endoporus and being arranged on upper punch and the lower outside external gear rushed on periphery wall, the Shape correction to gear tooth can be realized, and by the upper end of internal gear is set to flared, gear can be facilitated to enter in shaping former.
The above embodiment is only for absolutely proving the preferred embodiment that the utility model is lifted, and protection domain of the present utility model is not limited thereto.The equivalent alternative or conversion that those skilled in the art do on the utility model basis, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.

Claims (6)

1. a powder metallurgical gear shaping mould, is characterized in that: comprise shaping former, upper punch and undershoot, and the lower surface of described upper punch is provided with the annular protrusion coordinated with gear face annular groove; Described undershoot comprises lower outside punching, Xia Zhongchong and Xia Sanchong, described lower outside punching, Xia Zhongchong and lower three centers rushed are equipped with central through hole, described lower middle punching is sleeved in described lower outside punching, described lower three punchings are sleeved in described lower middle punching, be provided with internal spline in the central through holes of described lower three punchings, and described lower three rush inner sleeve and are equiped with the forming core rod coordinated with described internal spline; The external diameter of described lower middle punching equals the large footpath of gear face annular groove, and the external diameter of described lower three punchings equals the path of gear face annular groove, and the top of the central through hole of described lower middle punching is provided with the flared section coordinated with the madial wall of gear face annular groove; The endoporus of described shaping former is provided with internal gear, and on the outer wall of described upper punch and lower outside punching, correspondence is provided with external gear, and the upper end being arranged on the internal gear on described shaping former endoporus is the flared that tip diameter increases gradually along direction from the bottom up.
2. powder metallurgical gear shaping mould according to claim 1, is characterized in that: described upper punch and lower in rush to and correspondingly with gear profiled holes be provided with through hole.
3. powder metallurgical gear shaping mould according to claim 1, is characterized in that: the external gear being arranged on described lower outside punching comprises superposed profiled section and is positioned at the section of cooling down of bottom, described in the large footpath of the section of cooling down be less than the large footpath of described profiled section.
4. powder metallurgical gear shaping mould according to claim 1, is characterized in that: described shaping former comprises former cover and former core, and described former core retainer plate is contained in described former cover, and described internal gear is arranged in the endoporus of former core.
5. powder metallurgical gear shaping mould according to claim 4, is characterized in that: described former puts and is provided with annular and is laid with guide rod hole for installing guide rod.
6. powder metallurgical gear shaping mould according to claim 1, it is characterized in that: be provided with location structure between described forming core rod and upper punch, described location structure comprises and is arranged on locating hole on described upper punch lower surface and is arranged on the positioning convex that forming core rod upper surface coordinates with described locating hole.
CN201420637287.4U 2014-10-30 2014-10-30 Powder metallurgical gear shaping mould Expired - Fee Related CN204182916U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420637287.4U CN204182916U (en) 2014-10-30 2014-10-30 Powder metallurgical gear shaping mould

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420637287.4U CN204182916U (en) 2014-10-30 2014-10-30 Powder metallurgical gear shaping mould

Publications (1)

Publication Number Publication Date
CN204182916U true CN204182916U (en) 2015-03-04

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201420637287.4U Expired - Fee Related CN204182916U (en) 2014-10-30 2014-10-30 Powder metallurgical gear shaping mould

Country Status (1)

Country Link
CN (1) CN204182916U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105234405A (en) * 2015-10-14 2016-01-13 东睦新材料集团股份有限公司 Preparation method for iron-based powder metallurgy part with compact surface

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105234405A (en) * 2015-10-14 2016-01-13 东睦新材料集团股份有限公司 Preparation method for iron-based powder metallurgy part with compact surface
CN105234405B (en) * 2015-10-14 2017-09-12 东睦新材料集团股份有限公司 A kind of preparation method of the iron-based powder metallurgy parts with densified surface

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20150304

Termination date: 20151030

EXPY Termination of patent right or utility model