CN202824207U - Gear portion reforming of straight gear and bevel gear of blind hole and internal spline cold extruding die - Google Patents
Gear portion reforming of straight gear and bevel gear of blind hole and internal spline cold extruding die Download PDFInfo
- Publication number
- CN202824207U CN202824207U CN 201220472439 CN201220472439U CN202824207U CN 202824207 U CN202824207 U CN 202824207U CN 201220472439 CN201220472439 CN 201220472439 CN 201220472439 U CN201220472439 U CN 201220472439U CN 202824207 U CN202824207 U CN 202824207U
- Authority
- CN
- China
- Prior art keywords
- die
- workpiece
- internal spline
- gear
- patrix
- 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.)
- Withdrawn - After Issue
Links
Images
Landscapes
- Forging (AREA)
Abstract
The utility model discloses gear portion reforming of a straight gear and a bevel gear of a blind hole and an internal spline cold extruding die. The gear portion reforming of the straight gear and the bevel gear of the blind hole and the internal spline cold extruding die comprise an upper formwork, an elastic pressing rod, a protruding die, an upper die, a lower die and a workbench. The lower die is located on and connected with the workbench. A gear-shaped concave die cavity used for a locating basis for a workpiece is arranged in the middle of a top face of the lower die. The upper die is located above the lower die. A circular hole die cavity in the middle of the upper die is in clearance fit with a tube sleeve of the workpiece. The upper formwork is connected with the upper die through the elastic pressing rod to form an elastic pressing head structure. The upper die moving down with the upper formwork is matched with the static lower die to reform the gear portion of the workpiece. A bottom face of the upper formwork is downward and perpendicularly connected with a cylinder-shaped protruding die in the middle portion. The bottom section of the die is the protruding die of an outer spline inserted into the circular die cavity of the upper die so that the inner spline cold extruding die with a rigid structure is formed. According to the gear portion reforming of the straight gear and the bevel gear of the blind hole and the internal spline cold extruding die, cold extruding of an internal spline is achieved based on the foundation of the gear portion reforming. Due to uniformity of the locating basis and a workpiece design basis, location is precise, quality is stable and production efficiency is high.
Description
Technical field
The utility model relates to a kind of metal cold extrusion die, and specifically, the utility model relates to the section's shaping of a kind of blind hole straight bevel gear tooth and internal spline cold extruding die.
Background technology
Straight bevel gear is positioned at the output of automobile differential, and the straight bevel gear axis hole of traditional structure is through hole, and the internal spline of making in the axis hole adopts Broaching Technology can efficiently obtain precision cutting shaping processing.But, the internal spline of straight bevel gear cooperates with supporting splined shaft and belongs to a kind of matched in clearance, lubricating oil easily overflows from the fit clearance trace in the differential mechanism running, and long-term oil spilling must reduce the running quality of differential mechanism, also causes the local pollution of the environment and waste problem.For the fault of construction of traditional straight bevel gear, one's own profession had generally adopted a kind of straight bevel gear of blind hole structure to substitute already, and this structure is shutoff lubricating oil overflow channel thoroughly, guaranteed that differential mechanism is in stable lubricated environment for a long time.But the straight bevel gear of blind hole structure also significantly increases manufacture difficulty, and particularly internal spline shaping difficulty strengthens.Generally adopt two step forming manufacturings for the blind hole straight bevel gear manufacture method industry, namely tooth section and internal spline are processed respectively.Although this special shaping processing method simple process is easily realized High-efficient Production.But internal spline is different from tooth section machining benchmark in the process, has position error, causes the product axiality not high, directly affects the differential mechanism transmission accuracy, increases rotational noise.
The utility model content
The utility model is processed respectively tooth section and internal spline mainly for prior art, causes the not high problem of product axiality, proposes a kind of simple in structure, the section's shaping of blind hole straight bevel gear tooth and internal spline cold extruding die that positioning datum is consistent with design basis.
The utility model is achieved through the following technical solutions technical goal.
The section's shaping of blind hole straight bevel gear tooth and internal spline cold extruding die, it comprises cope match-plate pattern, elastic pressure bar, punch, upper die and lower die and workbench.Described counterdie is located by connecting on the table plane, and the counterdie end face is provided with the profile of tooth matrix cavity between two parties as workpiece tooth section positioning datum.Described patrix is positioned on the counterdie, and both coaxial fits, patrix are provided with between two parties circular vertical core die cavity and cooperate with the intersegmental crack of workpiece pipe box up.Its improvements are: connect and compose the compensating squeeze head structure by elastic pressure bar between described cope match-plate pattern and the patrix, cooperate with static counterdie with the descending patrix of cope match-plate pattern and do first the shaping of workpiece tooth section.Described cope match-plate pattern bottom surface is vertical connecting cylinder shape punch placed in the middle down, and end section is that the punch of external splines mould inserts in the circular vertical core die cavity of patrix, consists of the internal spline cold extruding die of rigid structure.
Patrix cooperates with counterdie when being in workpiece tooth section shaping position in the said structure, the punch bottom is positioned at workpiece internal splined hole original position to be processed, be obstructed because patrix is descending, cope match-plate pattern overcomes the elastic pressure bar elastic force and promotes the descending formation of punch to workpiece pipe box place internal spline cold-extrusion shaping.
The utility model compared with prior art has following good effect:
1, make the compensating squeeze head of tooth section shaping and make the conjuncted order of internal spline cold extruding die and exert pressure, simple in structure, make easily;
2, with the tooth section location cold extrusion internal spline of shaping, positioning datum is consistent with design basis, and Workpiece Machining Accuracy is high;
3, once loading and unloading, order is finished the shaping of tooth section and cold extrusion internal spline, and processing cost is low, production efficiency is high.
Description of drawings
Fig. 1 is the utility model structural profile schematic diagram, shows among the figure that descending patrix cooperates with static counterdie to do the shaping of workpiece tooth section, and the punch bottom is positioned at workpiece pipe box internal spline original position to be processed.
Fig. 2 is that basic upper male mould at Fig. 1 is with the descending cold extrusion internal spline schematic diagram of doing of cope match-plate pattern.
Fig. 3 is the structural representation after the workpiece processing.
Fig. 4 is that workpiece is in blank stage schematic diagram among Fig. 1.
The specific embodiment
The utility model is described in further detail with reference to the accompanying drawings for the below.
The section's shaping of blind hole straight bevel gear tooth and internal spline cold extruding die illustrated in figures 1 and 2, it is a kind of combination die, comprises cope match-plate pattern 1, elastic pressure bar 2, punch 3, patrix 4, counterdie 5 and workbench 6 in the structure.Described counterdie 5 is located by connecting on workbench 6 planes, and counterdie 5 end faces are provided with the profile of tooth matrix cavity between two parties as workpiece 7 tooth section sizing dies, also are the positioning datums of workpiece 7, and workpiece 7 blanks as shown in Figure 4.Described patrix 4 is positioned on the counterdie 5, and both coaxial fits, patrix 4 are provided with between two parties circular vertical core die cavity and cooperate with the intersegmental crack of workpiece 7 pipe box up.The utility model connects and composes the compensating squeeze head structure by elastic pressure bar 2 between cope match-plate pattern 1 and patrix 4, cope match-plate pattern 1 drives up and down rectilinear motion by supporting forcing press, cooperates with static counterdie 5 with the descending patrix 4 of cope match-plate pattern 1 as shown in Figure 1 and does first the shaping of workpiece 7 tooth sections.Described cope match-plate pattern 1 bottom surface is vertical connecting cylinder shape punch 3 placed in the middle down, and end section is that the punch 3 of external splines mould inserts in the circular vertical core die cavity of patrix 4, consists of the as shown in Figure 2 internal spline cold extruding die of rigid structure.
During the utility model practical application, in counterdie 5, at first obtain shaping in the tooth section of workpiece 7 under the exerting pressure of patrix 4.This moment, punch 3 bottoms were positioned at workpiece 7 pipe box internal splines original position to be processed as shown in Figure 2, and patrix 4 continues to keep the elastic compression state by elastic pressure bar 2 with counterdie 5 after the shaping, and namely the locating clip clamping of workpieces 7.When patrix 4 descending being obstructed, forcing press promotes the active force of cope match-plate pattern 1 by the punch 3 descending workpiece 7 pipe box internal spline cold-extrusion shapings that remake.Processing is all sequentially finished in workpiece 7 tooth section shapings and internal spline cold extrusion in the utility model under same positioning datum condition, and production efficiency is high, steady quality.Because positioning datum is consistent with the design basis of workpiece 7 in the utility model, does not have position error, is conducive to improve the axiality of tooth section and internal spline.
Claims (2)
1. blind hole straight bevel gear tooth section's shaping and internal spline cold extruding die, it comprises cope match-plate pattern (1), elastic pressure bar (2), punch (3), patrix (4), counterdie (5) and workbench (6); Described counterdie (5) is located by connecting on workbench (6) plane, and counterdie (5) end face is provided with the profile of tooth matrix cavity between two parties as workpiece (7) tooth section positioning datum; Described patrix (4) is positioned on the counterdie (5), and both coaxial fits, patrix (4) are provided with between two parties circular vertical core die cavity and cooperate with the intersegmental crack of workpiece (7) pipe box up; It is characterized in that: connect and compose the compensating squeeze head structure by elastic pressure bar (2) between described cope match-plate pattern (1) and the patrix (4), cooperate with static counterdie (5) with the descending patrix (4) of cope match-plate pattern (1) and do first the shaping of workpiece (7) tooth section; Described cope match-plate pattern (1) bottom surface is vertical connecting cylinder shape punch (3) placed in the middle down, and end section is that the punch (3) of external splines mould inserts in the circular vertical core die cavity of patrix (4), consists of the internal spline cold extruding die of rigid structure.
2. blind hole straight bevel gear tooth according to claim 1 section's shaping and internal spline cold extruding die, it is characterized in that: described patrix (4) cooperates with counterdie (5) when being in workpiece (7) tooth section shaping position, punch (3) bottom is positioned at workpiece (7) internal splined hole original position to be processed, because of descending being obstructed of patrix (4), cope match-plate pattern (1) overcomes elastic pressure bar (2) elastic force and promotes the descending formation of punch (3) to workpiece (7) pipe box place internal spline cold-extrusion shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472439 CN202824207U (en) | 2012-09-17 | 2012-09-17 | Gear portion reforming of straight gear and bevel gear of blind hole and internal spline cold extruding die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220472439 CN202824207U (en) | 2012-09-17 | 2012-09-17 | Gear portion reforming of straight gear and bevel gear of blind hole and internal spline cold extruding die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202824207U true CN202824207U (en) | 2013-03-27 |
Family
ID=47936003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220472439 Withdrawn - After Issue CN202824207U (en) | 2012-09-17 | 2012-09-17 | Gear portion reforming of straight gear and bevel gear of blind hole and internal spline cold extruding die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202824207U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847807A (en) * | 2012-09-17 | 2013-01-02 | 江苏太平洋精锻科技股份有限公司 | Blind-hole straight bevel gear tooth reshaping and internal spline cold extruding die |
| CN103341737A (en) * | 2013-07-12 | 2013-10-09 | 盐城工学院 | Machining method for improving coaxiality of special-shaped cavity and internal spline of start guide cylinder |
| CN111266430A (en) * | 2018-12-04 | 2020-06-12 | 无锡市华机机械制造有限公司 | Method for forming rotating shaft for pneumatic actuator |
-
2012
- 2012-09-17 CN CN 201220472439 patent/CN202824207U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847807A (en) * | 2012-09-17 | 2013-01-02 | 江苏太平洋精锻科技股份有限公司 | Blind-hole straight bevel gear tooth reshaping and internal spline cold extruding die |
| CN102847807B (en) * | 2012-09-17 | 2015-02-18 | 江苏太平洋精锻科技股份有限公司 | Blind-hole straight bevel gear tooth reshaping and internal spline cold extruding die |
| CN103341737A (en) * | 2013-07-12 | 2013-10-09 | 盐城工学院 | Machining method for improving coaxiality of special-shaped cavity and internal spline of start guide cylinder |
| CN103341737B (en) * | 2013-07-12 | 2015-08-05 | 盐城工学院 | A kind of processing method improving the special-shaped chamber of starting guide cylinder and internal spline coaxiality |
| CN111266430A (en) * | 2018-12-04 | 2020-06-12 | 无锡市华机机械制造有限公司 | Method for forming rotating shaft for pneumatic actuator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101332489B (en) | Cold-forging precise forming technique of gear sleeve | |
| CN201338050Y (en) | Orifice chamfering or rounding die | |
| CN202824207U (en) | Gear portion reforming of straight gear and bevel gear of blind hole and internal spline cold extruding die | |
| CN103056179A (en) | Warm extrusion forming method for straight toothed spur gear | |
| CN204108206U (en) | Is furnished with the closed-type cold-extruding mould of counterpressure forming structure | |
| CN102847807B (en) | Blind-hole straight bevel gear tooth reshaping and internal spline cold extruding die | |
| CN201350464Y (en) | Liner bushing manufacturing device and liner bushing | |
| CN103658213A (en) | Novel extrusion method for efficiently machining straight spur gear | |
| CN102527913A (en) | Precision plastic forming method for tooth direction drum repair of straight spur gear | |
| CN203599261U (en) | Blind hole internal spline cold-extrusion die | |
| CN203791554U (en) | Machining device for spur gear | |
| CN104275427A (en) | Manufacturing method of multi-station die for multi-step shafts | |
| CN2362606Y (en) | Composite mould for one-step cold-extrusion formation of multi-section spline shouldered shaft | |
| CN202224579U (en) | A straight tooth cylindrical gear forming die with tooth end bypass flow cavities | |
| CN102814350B (en) | Sawtooth-shaped hole cold-extruding device and male die and female die thereof | |
| CN103480787A (en) | Hot forging forming die for synchronous gear rings | |
| CN216065376U (en) | Closed forging die of abnormal shape flange forging | |
| CN210254051U (en) | Forming die for bevel gear shaft with large height-diameter ratio | |
| CN1868633A (en) | Shaping method of straight teeth cylindrical gear wheel | |
| CN210907720U (en) | Aluminum alloy automobile control arm bending die | |
| CN210358822U (en) | Device for extruding nodular cast iron piston ring blank into ellipse after casting of right cylinder | |
| CN203764671U (en) | Semi-closed axial extrusion die for spline shaft | |
| CN216175411U (en) | Cold extrusion die capable of meeting size of high-precision internal spline of input shaft | |
| CN103691753A (en) | Cold extrusion mold for blind hole inner spline | |
| CN210146703U (en) | Bending forming device of aluminium alloy of low rejection rate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130327 Effective date of abandoning: 20150218 |
|
| RGAV | Abandon patent right to avoid regrant |