CN209465777U - The broaching tool of processing involute spline holes - Google Patents
The broaching tool of processing involute spline holes Download PDFInfo
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- CN209465777U CN209465777U CN201920124666.6U CN201920124666U CN209465777U CN 209465777 U CN209465777 U CN 209465777U CN 201920124666 U CN201920124666 U CN 201920124666U CN 209465777 U CN209465777 U CN 209465777U
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Abstract
The utility model discloses a kind of broaching tool of processing involute spline holes, including preceding road broaching tool and rear road broaching tool, for preceding road broaching tool for pulling out scallop on workpiece, rear road broaching tool carries out pulling eye to by scallop again；Guidance part (50) are equipped on preceding road broaching tool and rear road broaching tool, it is the first trapezoidal drawing tooth (1) that multiple sections are equipped on guidance part (50), it is additionally provided on road broaching tool afterwards refine portion (60), refine portion (60) are equipped with second that multiple sections are involute profile and draw tooth (2).Have the advantages that passing rate of processing is high with the utility model workpieces processing.
Description
Technical field
The utility model belongs to the splined hole manufacture field of plunger pump.More particularly to a kind of drawing of processing involute spline holes
Knife.
Background technique
Involute spline is one kind of spline, for transmitting torque.Involute spline is larger for load, and centering precision is wanted
Ask the connection between higher and larger-size different workpieces.It is set in the hole (abbreviation splined hole) matched with involute spline
There are multiple teeth, there is radial force when loaded on tooth, so being heat-treated to improve the hardness of teeth.Splined hole adds
Work is first to use involute spline broach rough scallop out on workpiece, is then heat-treated to workpiece, then uses involute
To scallop, pulling eye obtains splined hole to spline broach again, and the purpose of pulling eye is that eliminate workpiece produces during heat treatment again
Raw deformation, it is ensured that the size of spline pore size is accurate.However, it is special for some materials and have High Accuracy Parameter requirement
Workpiece for, the rotor being such as used in plunger pump, material 40CrNiMoA, it is desirable that be heat-treated to 33-38HRC, spline
The parameter request in hole is very strict, is processed by the processing method of existing splined hole, and blank hole can occur in bulk heat treatmet
Very irregular deformation is difficult to ensure to obtain qualified splined hole pulling eye again, and the passing rate of processing of splined hole is not
Higher than 10%, passing rate of processing is low.Therefore, that there are passing rate of processing is low for the splined hole of existing involute spline broach processing
Disadvantage.
Utility model content
The purpose of the utility model is to provide a kind of broaching tools of processing involute spline holes.The utility model processing
Splined hole has the advantages that passing rate of processing is high.
The technical solution of the utility model includes: the broaching tool of processing involute spline holes, including preceding road broaching tool and rear road broaching tool, it is preceding
For road broaching tool for pulling out scallop on workpiece, rear road broaching tool carries out pulling eye to by scallop again；Preceding road broaching tool and rear road are drawn
Guidance part is equipped on knife, it is the first trapezoidal drawing tooth that multiple sections are equipped on guidance part, is additionally provided with refine on rear road broaching tool
Portion, refine portion are equipped with second that multiple sections are involute profile and draw tooth.The preceding road broaching tool for workpiece heat treatment it
Before, the rear road broaching tool is used for after heat treatment of workpieces.
In the broaching tool of aforementioned processing involute spline holes, the guidance part includes one group of first gear ring being gradually increased, and one
The side of the first gear ring of group is equipped with one group of multiple second gear ring, and multiple first are equipped on each second gear ring and draws tooth；The essence
The portion of repairing includes one group of third gear ring being gradually increased, and the side of one group of third gear ring is equipped with one group of the 4th gear ring, each 4th tooth
It is equipped with multiple second on circle and draws tooth.
In the broaching tool of aforementioned processing involute spline holes, the quantity of first gear ring is 20-35, second gear ring
Quantity be 2-6, the quantity of the third gear ring is 30-50, and the quantity of the 4th gear ring is 2-6.
In the broaching tool of aforementioned processing involute spline holes, the quantity of first gear ring is 27, second gear ring
Quantity is 4, and the quantity of the third gear ring is 41, and the quantity of the 4th gear ring is 4.
In the broaching tool of aforementioned processing involute spline holes, described first draws the transverse tooth thickness B of tooth less than the width of splined hole tooth socket
S, 0.2mm≤S-B≤0.3mm.
In the broaching tool of aforementioned processing involute spline holes, the tip diameter D of second gear ring4Less than splined hole tooth root
Circular diameter D1, D1-D4=0.5mm.
Compared with prior art, the utility model is that splined hole is processed with two broaching tools, and preceding road broaching tool is used in workpiece
Before heat treatment, by limiting the concrete shape of each gear ring on preceding road broaching tool, the scallop of special cross-section shape is obtained, is reserved
Machining allowance appropriate enables irregular deformation after heat treatment of workpieces to be completely eliminated by rear road broaching tool；Road broaching tool is used in afterwards
After the heat treatment of workpiece, on rear road broaching tool have gear ring identical with preceding road broach tooth profile, in pulling eye from guiding function, also have
Have for the gear ring to scallop refine, after the processing of Jing Houdao broaching tool, qualified splined hole can be obtained, the processing of splined hole is qualified
Rate is close to 100%.The utility model is cooperated by many kinds of parameters of two broaching tools being used cooperatively and limit on two broaching tools,
So that the passing rate of processing of splined hole is higher.Therefore, the splined hole of the utility model processing has the advantages that passing rate of processing is high.
Detailed description of the invention
The front view of the road Tu1Shi Qian broaching tool.
Fig. 2 is the sectional view of the second gear ring.
The front view of the road Tu3Shi Hou broaching tool.
Fig. 4 is the splined hole section that the requirement of rotor is processed.
The label in accompanying drawing is: 1- first draws tooth, 2- second draws tooth, 89- chip space, D1Splined hole root circle, D2Spline
Hole outside circle, D3Splined hole reference circle, the width of S- splined hole tooth socket, B- first draw the transverse tooth thickness of tooth, D4The tooth top of-the second gear ring
Circle, D5The reference circle of-the second gear ring, D6The root circle of-the second gear ring, 50- guidance part, the first gear ring of 51-, the second tooth of 52-
Circle, 60- refine portion, 61- third gear ring, the 4th gear ring of 62-.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples, but is not intended as to the utility model
The foundation of limitation.
Embodiment.To the rotor machining involute spline holes in plunger pump, rotor material is 40CrNiMoA, it is desirable that at heat
Reason to 33-38HRC, splined hole as shown in figure 4, splined hole require parameter it is as follows, splined hole root diameterSplined hole tip diameterSplined hole reference diameter D3=34mm, spline
Width S=1.69mm of hole tooth socket, the width of splined hole tooth socket refer to arc length length of the splined hole tooth socket on its reference circle.
The broaching tool of processing involute spline holes.Including preceding road broaching tool and rear road broaching tool, preceding road broaching tool is used in step a,
Scallop is pulled out on workpiece, rear road broaching tool for carrying out pulling eye for scallop in step c again；Preceding road broaching tool and rear road broaching tool
On be equipped with guidance part 50, it is trapezoidal first to draw tooth 1 that multiple sections are equipped on guidance part 50, is additionally provided with essence on rear road broaching tool
Portion 60 is repaired, refine portion 60 is equipped with second that multiple sections are involute profile and draws tooth 2.
The guidance part 50 includes one group of first gear ring 51 being gradually increased, and the side of one group of first gear ring 51 is equipped with one group
Multiple second gear rings 52 are equipped with multiple first on each second gear ring 52 and draw teeth 1；The refine portion 60 includes one group and gradually increases
Big third gear ring 61, the side of one group of third gear ring 61 are equipped with one group of the 4th gear ring 62, are equipped on each 4th gear ring 62
Multiple second draw tooth 2.The axial distribution of one group of first gear ring 51, is gradually increased along axial direction, and maximum first gear ring 51 is close to second
The side of gear ring 52, the section of the section of maximum first gear ring 51 less than the second gear ring 52.Axial point of one group of third gear ring 61
Cloth is gradually increased along axial direction, and the section of the smallest third gear ring 61 is greater than the section of the second gear ring 52, maximum third gear ring 61
Section less than the section of the 4th gear ring 62, the section of the 4th gear ring 62 is identical as needing to process the obtained section of splined hole.
Chip space 89 is equipped between adjacent gear ring.
The quantity of first gear ring is 20,27 or 35, and the quantity of second gear ring is 2,4 or 6, the third
The quantity of gear ring is 30,41 or 50, and the quantity of the 4th gear ring is 2,4 or 6.
Described first draws the transverse tooth thickness B of tooth 1 to be less than the width S of splined hole tooth socket, and S-B=0.29mm, described first draws tooth 1
Transverse tooth thickness refers to transverse tooth thickness of the first drawing tooth 1 where it on reference circle.
The tip diameter D of second gear ring 524Less than splined hole root diameter D1, D1-D4=0.5mm.
The tip diameter D of second gear ring4=35.03mm, the reference diameter D5=34mm of the second gear ring, second
The root circle D6=32.2mm of gear ring.
Described first draws the section of tooth 1 for isosceles trapezoid, and the angle of first drawing 1 two flank of tooth of tooth is 65 ° 8 ', and first draws tooth
1 transverse tooth thickness B=1.4mm.
The use of preceding road broaching tool: using before rotor heat treatment, and sequence when preceding road broaching tool passes through rotor is that preceding road is drawn
Multiple first gear rings 51 of knife are ascending successively to initially pass through rotor, and then all second gear rings 52 of preceding road broaching tool pass through rotor,
Obtain scallop.The scallop that preceding road broaching tool obtains after reduces the machining allowance of rear road broaching tool, convenient for providing processing essence
Degree, while the deformation for also enabling scallop generate during heat treatment is all eliminated by rear road broaching tool.
The use of road broaching tool afterwards: using after rotor heat treatment, and preceding road broaching tool is across rotor, rear road broaching tool it is multiple
First gear ring 51 is ascending successively to initially pass through scallop, and then, all second gear rings 52 of rear road broaching tool pass through scallop, so
Afterwards, multiple third gear rings 61 of rear road broaching tool are ascending successively initially passes through scallop, finally, all 4th teeth of rear road broaching tool
Circle 62 passes through scallop, completes processing.4th gear ring 62 is used for the refine of final step, improves the precision of splined hole.
Have the advantages that passing rate of processing is high with the utility model workpieces processing.
Claims (6)
1. the broaching tool of processing involute spline holes, it is characterised in that: including preceding road broaching tool and rear road broaching tool, preceding road broaching tool is used for
Scallop is pulled out on workpiece, rear road broaching tool carries out pulling eye to by scallop again；It is equipped with and leads on preceding road broaching tool and rear road broaching tool
Draw portion (50), it is the first trapezoidal drawing tooth (1) that multiple sections are equipped on guidance part (50), is additionally provided with refine portion on rear road broaching tool
(60), refine portion (60) are equipped with the second drawing tooth (2) that multiple sections are involute profile.
2. the broaching tool of processing involute spline holes according to claim 1, it is characterised in that: the guidance part (50) includes
The side of one group of first gear ring (51) being gradually increased, one group of first gear ring (51) is equipped with one group of multiple second gear ring (52), often
It is equipped with multiple first on a second gear ring (52) and draws tooth (1)；The refine portion (60) includes one group of third tooth being gradually increased
It encloses (61), the side of one group of third gear ring (61) is equipped with one group of the 4th gear ring (62), is equipped on each 4th gear ring (62) more
A second draws tooth (2).
3. the broaching tool of processing involute spline holes according to claim 2, it is characterised in that: first gear ring (51)
Quantity is 20-35, and the quantity of second gear ring (52) is 2-6, and the quantity of the third gear ring (61) is 30-50,
The quantity of 4th gear ring (62) is 2-6.
4. the broaching tool of processing involute spline holes according to claim 3, it is characterised in that: first gear ring (51)
Quantity is 27, and the quantity of second gear ring (52) is 4, and the quantity of the third gear ring (61) is 41, the described 4th
The quantity of gear ring (62) is 4.
5. the broaching tool of processing involute spline holes according to claim 1, it is characterised in that: described first draws tooth (1)
Transverse tooth thickness B is less than the width S of splined hole tooth socket, 0.2mm≤S-B≤0.3mm.
6. the broaching tool of processing involute spline holes according to claim 2, it is characterised in that: second gear ring (52)
Tip diameter D4Less than splined hole root diameter D1, D1-D4=0.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920124666.6U CN209465777U (en) | 2019-01-24 | 2019-01-24 | The broaching tool of processing involute spline holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920124666.6U CN209465777U (en) | 2019-01-24 | 2019-01-24 | The broaching tool of processing involute spline holes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209465777U true CN209465777U (en) | 2019-10-08 |
Family
ID=68093638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920124666.6U Active CN209465777U (en) | 2019-01-24 | 2019-01-24 | The broaching tool of processing involute spline holes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209465777U (en) |
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2019
- 2019-01-24 CN CN201920124666.6U patent/CN209465777U/en active Active
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