CN202517042U - Gear hub compacting mould for automobile synchronizer in powder metallurgy - Google Patents
Gear hub compacting mould for automobile synchronizer in powder metallurgy Download PDFInfo
- Publication number
- CN202517042U CN202517042U CN2012201136293U CN201220113629U CN202517042U CN 202517042 U CN202517042 U CN 202517042U CN 2012201136293 U CN2012201136293 U CN 2012201136293U CN 201220113629 U CN201220113629 U CN 201220113629U CN 202517042 U CN202517042 U CN 202517042U
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- mould
- tooth
- gear hub
- hub
- keyway
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Abstract
The utility model provides a gear hub compacting mould for an automobile synchronizer in powder metallurgy. An outer tooth mould of a gear hub is arranged on a female mould; key slots are arranged on the outer tooth mould; and a tooth crest is arranged on the outer tooth mould between the key slots. According to the gear hub compacting mould provided by the utility model, the shape and structure of the key slots are changed, and meanwhile the tooth shapes and positions of outer teeth are also changed, so that the precision of the outer teeth and the key slots of final products is ensured. The gear hub compacting mould is suitable for serving as a gear hub punching mould for the automobile synchronizer.
Description
Technical field
The utility model belongs to the processing mold of automobile gearbox internal tooth hub, specifically powder metallurgy automobile synchromesh gear hub compacting tool set.
Background technology
Synchromesh gear hub is the vitals in the automobile gearbox.Its overall precision and performance are directly determining the security and the stability of gearbox.The general steel synchromesh gear hub of using.In recent years progressively change into powder metallurgy toothed hub, process is simplified, and improve precision and serviceability.Powder compaction device is key factor, the especially hubbing of the decision tooth hub precision tooth hub finished product accuracy of directly determining.
General tooth hub compacting tool set designs by hubbing, plug, upward outwash, Shang Erchong, Shang Sanchong, following outwash, following two punch, following three dash and form.Hubbing is directly to make the hubbing profile of tooth according to routine compacting, sintering variable quantity; Do not increase external tooth deflection correction at tooth hub key groove place to the keyway place; Even keyway place external splines low precision; Also just thicken to replenish, cause keyway place external tooth transverse tooth thickness to increase, influence overall precision at external splines monodentate flank.
Summary of the invention:
Produce the low shortcoming of product precision in order to overcome existing tooth hub processing mold, the utility model provides powder metallurgy automobile synchromesh gear hub compacting tool set.This mould solves the technical problem of punching out tooth hub machining accuracy through the change of the outer toothing of keyway.
The scheme that the utility model technical solution problem is adopted is: former is provided with tooth hub external tooth mould, and the external tooth mould is provided with keyway, on the external tooth mould between the keyway, is provided with tooth top.
Good effect because the utility model has changed keyway external tooth shape and structure, therefore can guarantee tooth hub punching out Mould Machining precision.Suit to use as automobile synchronizer tooth hub compacting tool set.
Description of drawings
Fig. 1 is tooth hub structure figure
Fig. 2 is the hubbing structure chart
Among the figure, 1. tooth hub, 2. internal tooth, 3. keyway, 4. external tooth, 5. former, 6. tooth top, 7. keyway mould, 8. external tooth mould.
The specific embodiment
Tooth hub compacting tool set is dashed and is formed by hubbing, plug, last outwash, Shang Erchong, Shang Sanchong, following outwash, following two punch, following three.
According to shown in Figure 1, the tooth hub structure is: the outer rim at tooth hub 1 is provided with keyway 3 and external tooth 4, is provided with internal tooth 2 in tooth hub inboard.
According to shown in Figure 2, former 5 is provided with tooth hub external tooth mould 8, and the external tooth mould is provided with keyway mould 7, on the external tooth mould between the keyway mould, is provided with tooth top 6.
The use of the utility model:
This tooth hub is to transfer metallic sintered products to by steel part, selects for use the D39 material as alternative materials.Tooth hub external diameter is bigger, and the keyway opening is bigger simultaneously, the inside little contraction of keyway.When this mould designs at former, be starting point, press Fig. 2 target direction of arrow, do incremental rate curve with the actual measurement variable quantity, to keyway mould side with the center tooth top bit of hubbing I/3 tooth; Earlier make figure, press incremental rate curve alteration of form monodentate profile of tooth position again by normal profile of tooth; It is wide to increase key, taste sintering in order to benefit after, sintered blank integral body is dwindled simultaneously; The keyway place also dwindles relatively, and the problem that causes tooth hub overall precision to descend improves tooth hub external tooth precision; The keyway size reaches drawing requirement, and product quality is guaranteed, and accuracy of detection is at 9 grades in gear inspection center.Outwash is gone up in the part that matches simultaneously compacting, outwash, Shang Erchong, following two punch adjust accordingly down.
The machining accuracy of the utility model tooth hub diel can raising tooth hub device, thus crudy guaranteed, improve tooth hub serviceability.
Claims (1)
1. powder metallurgy automobile synchromesh gear hub compacting tool set, it is characterized in that: former (5) is provided with tooth hub external tooth mould (8), and the external tooth mould is provided with keyway mould (7), on the external tooth mould between the keyway mould, is provided with tooth top (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201136293U CN202517042U (en) | 2012-03-23 | 2012-03-23 | Gear hub compacting mould for automobile synchronizer in powder metallurgy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201136293U CN202517042U (en) | 2012-03-23 | 2012-03-23 | Gear hub compacting mould for automobile synchronizer in powder metallurgy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202517042U true CN202517042U (en) | 2012-11-07 |
Family
ID=47100010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201136293U Expired - Fee Related CN202517042U (en) | 2012-03-23 | 2012-03-23 | Gear hub compacting mould for automobile synchronizer in powder metallurgy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202517042U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117548678A (en) * | 2024-01-12 | 2024-02-13 | 烟台东一粉末冶金制造有限公司 | Powder metallurgy production line and production process for synchronizer gear sleeve |
-
2012
- 2012-03-23 CN CN2012201136293U patent/CN202517042U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117548678A (en) * | 2024-01-12 | 2024-02-13 | 烟台东一粉末冶金制造有限公司 | Powder metallurgy production line and production process for synchronizer gear sleeve |
| CN117548678B (en) * | 2024-01-12 | 2024-03-08 | 烟台东一粉末冶金制造有限公司 | Powder metallurgy production line and production process for synchronizer gear sleeve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20121107 Termination date: 20180323 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |