CN204248091U - A kind of assembled spline broach - Google Patents
A kind of assembled spline broach Download PDFInfo
- Publication number
- CN204248091U CN204248091U CN201420708072.7U CN201420708072U CN204248091U CN 204248091 U CN204248091 U CN 204248091U CN 201420708072 U CN201420708072 U CN 201420708072U CN 204248091 U CN204248091 U CN 204248091U
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- broaching tool
- spline
- calibration ring
- tooth
- teeth
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Abstract
The utility model discloses a kind of assembled spline broach, comprise broaching tool cutter hub, between the pull end of broaching tool cutter hub and targeting part and rear handle and targeting part, be disposed with round tooth, chamfered teeth and spline tooth; The spline finishing teeth rear portion of spline tooth is equiped with the calibration ring as broaching tool finish draw tooth, calibration ring is provided be made up of some groups of splines and circular hole, for smoothing broaching surface stage teeth.The utility model assembles calibration ring on existing broaching tool cutter hub, calibration ring is installed on the spline finishing teeth rear portion of spline tooth, it can be used as the finish draw tooth of broaching tool, the stage teeth that finishing teeth is made up of some groups of splines and circular hole, for further smoothing broaching surface; Install the broaching tool after finishing teeth additional to significantly improve service life, often broaching tool on average can be processed 6000, unit price processing cost reduces 55.6%; Part fineness brings up to Ra1.6 ~ Ra3.2 by Ra3.2 ~ Ra6.3; The sharpening frequency reduces, and is extended for class Three's tool changing sharpening by original one class of tool changing sharpening.
Description
Technical field
The utility model relates to a kind of assembled spline broach.
Background technology
At present, involute spline broach all adopts overall structure and is made up of same material, and when system stability, this monoblock type broaching tool life-span has reached its best effects.Current ring flange broaching tool is not durable, and the way generally taked is exactly that the overall new material that adopts designs broaching tool, causes broaching tool cost to be more than 2 times of M2 material cost like this.Ring flange draws involute spline operation Problems existing: the broaching tool life-span is low, and namely broaching tool sharpening occurs that unthreaded hole is tight for 2 ~ 3 times, and often broaching tool is processed average more than 2500 parts and just scrap, cutter consumption is serious.Adopt common high speed steel M2 and new material assembling to use, both improve the wearability of broaching tool, the material cost of broaching tool can not be made again significantly to improve.
Utility model content
The purpose of this utility model is the shortcoming overcoming above-mentioned prior art, provides a kind of assembled spline broach, adopts the involute spline broach made of two kinds of different materials, compares the monoblock type broaching tool life-span and significantly improves and reduce cost simultaneously.
For achieving the above object, the technical solution adopted in the utility model is:
A kind of assembled spline broach, comprises broaching tool cutter hub, is disposed with round tooth, chamfered teeth and spline tooth between the pull end of broaching tool cutter hub and targeting part and rear handle and targeting part; The spline finishing teeth rear portion of spline tooth is equiped with the calibration ring as broaching tool finish draw tooth.
Described calibration ring carries out circumferential registration by key and broaching tool cutter hub, and carries out axial location by nut.
Described calibration ring carries out axial location by two nuts of its end.
Described calibration ring is provided be made up of some groups of splines and circular hole, for smoothing broaching surface stage teeth.
The length of described calibration ring is 40 ~ 50mm, external diameter 0.005mm less of broaching tool cutter hub maximum outside diameter.
The material of described calibration ring adopts wear-resisting M35 or M42.
Compared with prior art, the utility model has following beneficial effect:
The utility model assembles calibration ring on existing broaching tool cutter hub, calibration ring is installed on the spline finishing teeth rear portion of spline tooth, it can be used as the finish draw tooth of broaching tool, the stage teeth that finishing teeth is made up of some groups of splines and circular hole, for further smoothing broaching surface; Install the broaching tool after finishing teeth additional to significantly improve service life, often broaching tool on average can be processed 6000, unit price processing cost reduces 55.6%; Part fineness brings up to Ra1.6 ~ Ra3.2 by Ra3.2 ~ Ra6.3; The sharpening frequency reduces, and is extended for class Three's tool changing sharpening by original one class of tool changing sharpening.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Wherein: 1 is broaching tool cutter hub; 2 is calibration ring; 3 is key; 4 is nut; 5 is pull end and targeting part; 6 is round tooth; 7 is chamfered teeth; 8 is spline tooth; 9 is rear handle and targeting part.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail:
See Fig. 1, the utility model comprises broaching tool cutter hub 1, is disposed with round tooth 6, chamfered teeth 7 and spline tooth 8 between the pull end of broaching tool cutter hub 1 and targeting part 5 and rear handle and targeting part 9; The spline finishing teeth rear portion of spline tooth 8 is equiped with the calibration ring 2 as broaching tool finish draw tooth, calibration ring 2 is provided be made up of some groups of splines and circular hole, for smoothing broaching surface stage teeth.The material of calibration ring 2 adopts wear-resisting M35 or M42.Calibration ring 2 carries out circumferential registration by key 3 and broaching tool cutter hub 1, and carries out axial location by two nuts 4 of its end.The length of calibration ring 2 is 40 ~ 50mm, external diameter 0.005mm less of broaching tool cutter hub 1 maximum outside diameter.
Principle of the present utility model:
Current ring flange draws involute spline operation Problems existing: the broaching tool life-span is low, and namely broaching tool sharpening occurs that unthreaded hole is tight for 2 ~ 3 times, and often broaching tool is processed average more than 2500 parts and just scrap, cutter consumption is serious.The purpose of this utility model is to find the broaching tool material being applicable to this part, and this broaching tool material existing wearability must have economy again.
The analysis of causes: ring flange material is 45# steel, endoporus modulation hardness reaches HRC25 ~ 30, and cutter material is general high-speed tool steel, hardness HRC64.5 ~ 65.5, thus causes tool wear not to be durable soon, as shown in the table.
Improvement project:
1, on the basis of common spline broach, calibration ring is increased, further smoothing broaching surface;
2, the excircle dimension of common broaching tool increases progressively, and adopts the external diameter of the calibration ring of new material less than broaching tool maximum outside diameter by 0.005.Such design can play the effect storing broaching tool precision, extends the service life of broaching tool.
Concrete, the utility model, at the ring of broaching tool spline finishing teeth rear portion assembling 40 ~ 50mm length, is processed as the stage teeth of several groups of splines and circular hole, as the finish draw tooth of broaching tool; Cutter entirety adopts general high speed steel material W6MoCr4V2 (M2), and calibration ring adopts better M35 or M42 of wearability; In manufacture sharpening Technology for Heating Processing, adopt numerical control broaching tool to grind and make, segmented heat treatment, manufacture sharpening and select suitable emery wheel.
The utility model comprises cutter hub, calibration ring, key and nut.Cutter hub is identical with the structure of common broaching tool, and material is common high speed steel material M2, and calibration ring adopts new material.Carry out circumferential registration by key between calibration ring and cutter hub, carry out axial location by two nuts.When manufacturing broaching tool, after first cutter hub and calibration ring being assembled together, then moulding and reconditioning are carried out to whole cutter.The utility model mainly adopts a kind of new construction broaching tool of new and old material, breaches the conventional inertia thinking of technical staff, in line with cost-saving, improves the innovative design of the machining accuracy of workpiece.
Above content is only and technological thought of the present utility model is described; protection domain of the present utility model can not be limited with this; every technological thought according to the utility model proposes, any change that technical scheme basis is done, within the protection domain all falling into the utility model claims.
Claims (6)
1. an assembled spline broach, it is characterized in that: comprise broaching tool cutter hub (1), between the pull end of broaching tool cutter hub (1) and targeting part (5) and rear handle and targeting part (9), be disposed with round tooth (6), chamfered teeth (7) and spline tooth (8); The spline finishing teeth rear portion of spline tooth (8) is equiped with the calibration ring (2) as broaching tool finish draw tooth.
2. assembled spline broach according to claim 1, is characterized in that: described calibration ring (2) carries out circumferential registration by key (3) and broaching tool cutter hub (1), and carries out axial location by nut (4).
3. assembled spline broach according to claim 2, is characterized in that: described calibration ring (2) carries out axial location by two nuts of its end.
4. assembled spline broach according to claim 1, is characterized in that: described calibration ring (2) is provided be made up of some groups of splines and circular hole, for smoothing broaching surface stage teeth.
5. the assembled spline broach according to claim 1 or 2 or 3 or 4, is characterized in that: the length of described calibration ring (2) is 40 ~ 50mm, external diameter 0.005mm less of broaching tool cutter hub (1) maximum outside diameter.
6. the assembled spline broach according to claim 1 or 2 or 3 or 4, is characterized in that: the material of described calibration ring (2) adopts wear-resisting M35 or M42.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708072.7U CN204248091U (en) | 2014-11-21 | 2014-11-21 | A kind of assembled spline broach |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420708072.7U CN204248091U (en) | 2014-11-21 | 2014-11-21 | A kind of assembled spline broach |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204248091U true CN204248091U (en) | 2015-04-08 |
Family
ID=52952446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420708072.7U Active CN204248091U (en) | 2014-11-21 | 2014-11-21 | A kind of assembled spline broach |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204248091U (en) |
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2014
- 2014-11-21 CN CN201420708072.7U patent/CN204248091U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |