CN106734553A - A kind of punch forming frock in helical teeth hole - Google Patents
A kind of punch forming frock in helical teeth hole Download PDFInfo
- Publication number
- CN106734553A CN106734553A CN201611229990.1A CN201611229990A CN106734553A CN 106734553 A CN106734553 A CN 106734553A CN 201611229990 A CN201611229990 A CN 201611229990A CN 106734553 A CN106734553 A CN 106734553A
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- CN
- China
- Prior art keywords
- groove
- diameter
- workpiece
- helical teeth
- less
- 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.)
- Granted
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D28/00—Shaping by press-cutting; Perforating
- B21D28/24—Perforating, i.e. punching holes
- B21D28/34—Perforating tools; Die holders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/02—Die constructions enabling assembly of the die parts in different ways
Abstract
The invention discloses a kind of punch forming frock in helical teeth hole, including fixed sleeve part, the pierce punch and workpiece to be processed of end belt wheel odontoid, workpiece end surface is provided with preset holes, the end of pierce punch is front and rear isodiametric class column structure, notch is provided with fixed sleeve part, it is provided with what is run through by notch center in fixed sleeve part, for the passage that pierce punch passes through, notch includes truncated cone-shaped structure, the first groove for overlapping up and down, second groove, external diameter of the basal diameter of the second groove more than workpiece one end, the top surface diameter of the second groove is less than the external diameter of workpiece one end and equal to the basal diameter of the first groove, the top surface diameter of the first groove is less than basal diameter, angle between the inclined-plane and radial direction of the first groove is more than the angle between the inclined-plane and radial direction of the second groove.Enable accesses the helical teeth hole of footpath suitable for reading, lower relative aperture elementary errors.
Description
Technical field
The present invention relates to a kind of punch forming frock, more particularly, to a kind of punch forming frock in helical teeth hole.
Background technology
Punch forming helical teeth hole is now carried out to workpiece, as shown in figure 1, the gear teeth are provided with the side wall first of helical teeth hole, and
The gear teeth upper end bore in helical teeth hole is slightly larger than lower end bore.But in reality processing engineering, even if directly being beaten using diameter is constant
Hole tool, punching press is carried out along radial direction to workpiece.If the helical teeth hole upper end bore that processing is obtained meets the standard of processing request
Value, then lower end bore is then less than standard value；If lower end bore meets the standard value of processing request, then upper end bore is then more than mark
Quasi- value.Difference between the upper end bore and lower end bore in the helical teeth hole of the workpiece for finally obtaining is still excessive.
In this case, cannot obtain meeting the helical teeth of processing request by way of changing punching tooling
Hole.Now regarding to the issue above, a kind of punch forming frock in helical teeth hole is set, enable access footpath suitable for reading, lower relative aperture elementary errors,
Meet the helical teeth hole of processing request.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of punch forming frock in helical teeth hole, and enable accesses suitable for reading
Footpath, the helical teeth hole of lower relative aperture elementary errors.
The present invention solve the technical scheme that is used of above-mentioned technical problem for：A kind of punch forming frock in helical teeth hole, bag
The pierce punch and workpiece to be processed of fixed sleeve part, end belt wheel odontoid are included, described workpiece end surface is provided with
Preset holes, the end of described pierce punch is front and rear isodiametric class column structure, and groove is provided with described fixed sleeve part
Mouthful, passage being run through by notch center, passing through for pierce punch is provided with described fixed sleeve part, described notch includes
Truncated cone-shaped structure, the first groove for overlapping up and down, the second groove, the basal diameter of the second described groove are more than workpiece one end
External diameter, the top surface diameter of the second described groove is less than the external diameter of workpiece one end and equal to the basal diameter of the first groove, described
The top surface diameter of the first groove be less than basal diameter, the inclined-plane of described the first groove and radially between angle be more than second
Angle between the inclined-plane and radial direction of groove.
Further preferred scheme of the invention：The internal diameter of pierce punch of the bore of described preset holes less than described in, institute
The bottom surface of the preset holes stated is provided with counterbore of the bore less than preset holes.Preset holes are set so that pierce punch is subject to after pushing
Resistance it is smaller, can smoothly to the side wall punch forming of preset holes.Counterbore, the meeting during punch forming of the invention are set
There is unnecessary particle, particle drops into counterbore, and the shaping in helical teeth hole is not influenceed.And during punch forming, pierce punch
End can enter counterbore, the shaping in helical teeth hole is not influenceed.
Further preferred scheme of the invention：The second described groove top surface diameter and 1/2nd of basal diameter sum
External diameter of the value less than workpiece one end.External diameter of the bottom surface of the second groove more than workpiece one end, it is ensured that workpiece can enter from the beginning
Enter the second groove.And simultaneously, the bore after entering along the second groove will be gradually reduced, collected so as to the end to workpiece is played
Effect.So that the bore in the helical teeth hole after shaping meets process requirements.
Further preferred scheme of the invention：The depth of described notch is less than end of the pierce punch with tooth profiles
Length.The depth of notch is the length for wrapping workpiece end, in actual application, and need not will need processing
Part is all wrapped up, but its end is wrapped up in selection.
Further preferred scheme of the invention：The end bottom surface of described pierce punch is provided with sharp portion and transition part,
Described sharp portion is located at the bottom surface middle part of transition part, and point to the side wall arc-shaped transition of transition part, and described crosses transition
The diameter in portion is less than pierce punch one end diameter and both chamfered transitions.Set transition part during punch forming, transition part
It is capable of the preset holes of the entrance workpiece of slight drag first, is easy to be positioned in punching course.
Compared with prior art, the advantage of the invention is that before the punch forming of helical teeth hole is carried out to workpiece to be processed,
Fixed sleeve part is pushed and is enclosed within workpiece surface outward.The external diameter of former workpiece surface is consistent, after external member to be fixed is pushed, work end
The side wall in portion is extruded so that the side wall of workpiece end inwardly compresses and outer surface is mutually fitted with the notch arrangement in fixed sleeve part
Should.First using workpiece end first by less second groove of gradient, outer surface of workpiece is by along the oblique of the second groove
Inward-facing propulsion.The first groove is entered back into, the gradient of the first groove will be greater than the gradient of the second groove, play and last determine
Position effect.Setting fixed sleeve part of the invention so that the endoporus of workpiece diminishes, so that the dimension in the helical teeth hole that processing is obtained
Meet process requirements.And in practical application, in addition it is also necessary to note, the gradient of the second groove can not be excessive, it is impossible to needed more than processing
The upper bore in the helical teeth hole asked, lower relative aperture elementary errors.
Brief description of the drawings
Fig. 1 is undressed preceding structural representation；
Fig. 2 is the structural representation in process；
Fig. 3 is the partial structural diagram at notch.
Specific embodiment
Below in conjunction with the accompanying drawings, the present invention is described in detail.
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the present invention, not
For limiting the present invention.
As shown in Figure 1 to Figure 3：A kind of punch forming frock in helical teeth hole, including fixed sleeve part 1, end belt wheel odontoid
Pierce punch 2 and workpiece 3 to be processed, the end surface of workpiece 3 is provided with preset holes 4, and the end of pierce punch 2 is front and rear
Isodiametric class column structure, is provided with notch 5 in fixed sleeve part 1, be provided with fixed sleeve part 1 it is being run through by the center of notch 5,
For the passage that pierce punch 2 passes through, the first groove 6, the second groove 7, second that notch 5 includes truncated cone-shaped structure, overlaps up and down
The basal diameter of groove 7 is more than the external diameter of the one end of workpiece 3, and the top surface diameter of the second groove 7 is less than the external diameter of the one end of workpiece 3 and waits
In the basal diameter of the first groove 6, the top surface diameter of the first groove 6 is less than basal diameter, inclined-plane and the radial direction of the first groove 6
Between angle more than the second groove 7 inclined-plane and radially between angle.
Less than the internal diameter of pierce punch 2, the bottom surface of preset holes 4 is provided with bore less than preset holes 4 to the bore of preset holes 4
Counterbore.The top surface diameter of second groove 7 is less than the external diameter of the one end of workpiece 3 with 1/2nd values of basal diameter sum.Second groove 7
Top surface notch 5 depth less than pierce punch 2 with tooth profiles end length.
The end bottom surface of pierce punch 2 is provided with sharp portion 8 and transition part 9, and sharp portion 8 is located in the bottom surface of transition part 9
Portion, and point is to the side wall arc-shaped transition of transition part 9, cross the diameter of transition part 9 less than one end diameter of pierce punch 2 and both
Chamfered transition.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (5)
1. a kind of punch forming frock in helical teeth hole, it is characterised in that the punched hole punching including fixed sleeve part, end belt wheel odontoid
Head and workpiece to be processed, described workpiece end surface are provided with preset holes, and the end of described pierce punch is front and rear
Isodiametric class column structure, is provided with notch in described fixed sleeve part, be provided with by notch in described fixed sleeve part
Passage that the heart runs through, passing through for pierce punch, described notch includes truncated cone-shaped structure, the first groove for overlapping up and down, the
Two grooves, the basal diameter of the second described groove is more than the external diameter of workpiece one end, and the top surface diameter of the second described groove is small
In workpiece one end external diameter and equal to the basal diameter of the first groove, the top surface diameter of the first described groove is straight less than bottom surface
Footpath, the inclined-plane of described the first groove and radially between angle more than the second groove inclined-plane and radially between angle.
2. a kind of punch forming frock in helical teeth hole according to claim 1, it is characterised in that the mouth of described preset holes
Less than the internal diameter of described pierce punch, the bottom surface of described preset holes is provided with counterbore of the bore less than preset holes in footpath.
3. a kind of punch forming frock in helical teeth hole according to claim 1, it is characterised in that the second described groove top
Face diameter is less than the external diameter of workpiece one end with 1/2nd values of basal diameter sum.
4. a kind of punch forming frock in helical teeth hole according to claim 1, it is characterised in that the depth of described notch
Less than the length of end of the pierce punch with tooth profiles.
5. the punch forming frock in a kind of helical teeth hole according to claim 1, it is characterised in that described pierce punch
End bottom surface is provided with sharp portion and transition part, and described sharp portion is located at the bottom surface middle part of transition part, and point is to transition
The side wall arc-shaped transition in portion, the described diameter for crossing transition part is less than pierce punch one end diameter and both chamfered transitions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611229990.1A CN106734553B (en) | 2016-12-27 | 2016-12-27 | A kind of punch forming tooling in helical teeth hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611229990.1A CN106734553B (en) | 2016-12-27 | 2016-12-27 | A kind of punch forming tooling in helical teeth hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106734553A true CN106734553A (en) | 2017-05-31 |
| CN106734553B CN106734553B (en) | 2018-07-20 |
Family
ID=58922894
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611229990.1A Active CN106734553B (en) | 2016-12-27 | 2016-12-27 | A kind of punch forming tooling in helical teeth hole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106734553B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10296691A (en) * | 1997-04-30 | 1998-11-10 | Exedy Corp | Plate hole forming method, plate and punch |
| JP2003305521A (en) * | 2002-04-12 | 2003-10-28 | Toyota Auto Body Co Ltd | Press forming device |
| CN2635238Y (en) * | 2003-07-10 | 2004-08-25 | 白新刚 | Gear wheel blank reaming forging die |
| CN202715706U (en) * | 2012-04-27 | 2013-02-06 | 成都飞机工业（集团）有限责任公司 | Adjustable forming tool for kidney-shaped hole |
| CN206325999U (en) * | 2016-12-27 | 2017-07-14 | 山中合金（宁波）有限公司 | A kind of punch forming frock in helical teeth hole |
-
2016
- 2016-12-27 CN CN201611229990.1A patent/CN106734553B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10296691A (en) * | 1997-04-30 | 1998-11-10 | Exedy Corp | Plate hole forming method, plate and punch |
| JP2003305521A (en) * | 2002-04-12 | 2003-10-28 | Toyota Auto Body Co Ltd | Press forming device |
| CN2635238Y (en) * | 2003-07-10 | 2004-08-25 | 白新刚 | Gear wheel blank reaming forging die |
| CN202715706U (en) * | 2012-04-27 | 2013-02-06 | 成都飞机工业（集团）有限责任公司 | Adjustable forming tool for kidney-shaped hole |
| CN206325999U (en) * | 2016-12-27 | 2017-07-14 | 山中合金（宁波）有限公司 | A kind of punch forming frock in helical teeth hole |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106734553B (en) | 2018-07-20 |
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