CN209139861U - A kind of turning clamp of thin-walled ring parts - Google Patents
A kind of turning clamp of thin-walled ring parts Download PDFInfo
- Publication number
- CN209139861U CN209139861U CN201821549768.4U CN201821549768U CN209139861U CN 209139861 U CN209139861 U CN 209139861U CN 201821549768 U CN201821549768 U CN 201821549768U CN 209139861 U CN209139861 U CN 209139861U
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- CN
- China
- Prior art keywords
- thin
- supporting surface
- ring parts
- walled ring
- turning clamp
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Abstract
The utility model discloses a kind of turning clamp of thin-walled ring parts, infinite approach but do not contacted by the identical fan-deck card claw type of multiple structures at a cirque structure, when multiple sector claws work；Fan-shaped claw is the boss structure with positioning surface, and boss is equipped with inner hole supporting surface and outer circle supporting surface；The inner hole supporting surface on outer circle supporting surface circumferentially be equipped with a plurality of parallel hangnail tilted down, it is opposite with part penetration of a cutting tool Impact direction；Slope inwardly angled with axis is equipped in the junction of supporting surface and positioning surface.The utility model is designed by the hardness Design and hangnail that improve fan-shaped claw to be quantified to adjust to realize to clamping power, guarantee that part is not deformed because clamping power is too big in process, there is not part slippage because clamping power is too small again, it realizes the Deformation control in thin-walled ring parts turning process, ensure that part processing precision.The utility model manufactures simple, setting for machine simplicity, and technological parameter is perfect.
Description
Technical field
The utility model belongs to the clamping field of thin-walled ring parts, and in particular to a kind of turning folder of thin-walled ring parts
Tool.
Background technique
Planet row gear ring belongs to the kernel component of military vehicle comprehensive actuator, such part needs in process
Turning process is carried out, more special part needs to carry out no less than 4 times turning (thick, smart car), mostly uses clamping outer circle
Or the clamping form of support inner hole.Since such part has the characteristics that diameter big (φ 400mm), wall thickness are small (minimum 7mm), because
In clamping process, components will appear some deformations for this, and after removing clamping power after the completion of turning, recoverable force is generated permanent
Deformation causes irrecoverable adverse effect to the processing of subsequent teeth portion.Early period processing using CW630 lathe using fan pawl clamping or
End face be pressed to carry out turnery processing, although can effective Improving The Quality of Products, since process is by operator's experience
Influence bigger, therefore reliability of technology is very low, and stable product quality is poor.
Utility model content
The purpose of the utility model is to provide a kind of turning clamps of thin-walled ring parts, solve the processing of thin-walled ring parts
Because deforming final the problem of influencing product quality.
A kind of the technical solution of the utility model are as follows: turning clamp of thin-walled ring parts, it is characterised in that: by multiple knots
The identical fan-deck card claw type of structure infinite approach but is not contacted at a cirque structure, when multiple sector claws work；Fan-deck card
Pawl is the boss structure with positioning surface 3, and boss is equipped with inner hole supporting surface I and outer circle supporting surface II；The inner hole supporting surface I
With on outer circle supporting surface II circumferentially be equipped with a plurality of parallel hangnail tilted down, it is opposite with part penetration of a cutting tool Impact direction；?
The junction of supporting surface and positioning surface 3 is equipped with slope inwardly angled with axis.
The utility model has the advantages that the utility model is realized by improving hardness Design and the hangnail design of fan-shaped claw to clamping power
Quantify adjust, guarantee that part is not deformed because clamping power is too big in process, and do not occur zero because clamping power is too small
Part slips, and realizes the Deformation control in thin-walled ring parts turning process, ensure that part processing precision.The utility model production
It is simple to manufacture, setting for machine is easy, and technological parameter is perfect.
Detailed description of the invention
Fig. 1 is the claw section schematic diagram of the utility model；
Fig. 2 is the A-A cross-sectional view of Fig. 1；
Fig. 3 is the partial enlarged view of Fig. 2.
Specific embodiment
To keep the purpose of this utility model, content and advantage clearer, specific embodiment of the present utility model is made
It is described in further detail.
The utility model provides a kind of turning clamp of thin-walled ring parts, by the identical fan-deck card claw type of three structures
It infinite approach but is not contacted at a cirque structure, when three fan-shaped claws work；
Outer bowlder is clamped, the diameter of bore of cirque structure is greater than part outside diameter 1-2mm, when clamping inner hole, annulus
The outside diameter of shape structure is less than inner bore of part 1-2mm；Fan-shaped claw hardness must control between 30 >=HRC >=35, different
In traditional hard pawl (HRC >=58) and soft pawl (HRC≤23)；
Fan-shaped claw is the boss structure with positioning surface 3, and the boss is equipped with inner hole supporting surface I and outer circle supporting surface
Ⅱ；The inner hole supporting surface I on outer circle supporting surface II circumferentially be equipped with a plurality of parallel hangnail tilted down, eaten with part
Knife Impact direction is on the contrary, the hangnail may be designed in spiral shape；
Height III of the supporting surface bottom of fan-shaped claw away from positioning surface is 3/4ths of boss height IV, along fan-shaped claw
Axial certain altitude is equipped with hangnail, prevents part from slipping.
It is equipped with axis in the junction of supporting surface and positioning surface 3 into 20 ° of slope, is convenient for positioning and withdrawing.
In use, numerically-controlled machine tool uses fan-shaped claw instead by part processing request turning inner hole or outer circle, according to the ruler of part
Very little adjustment machine tool jaw clamping force.
By gear ring part be packed into lathe clamp, by roughing cutting parameter (left-handed/100 turns of cutting-in 1.5mm/ cutting speed/
Amount of feeding 2mm) and finishing cutting parameter (left-handed/200 turns/amount of feeding 1mm of cutting-in 0.5mm/ cutting speed) processed.
It is as shown in table 1 clamping power with part shape change in size relation table:
Table 1:
| Material category | Material hardness | Excircle dimension | Wall thickness (mm) | Stiffness coefficient | Clamping power (Kg.f) |
| 20Cr2Ni4A | HB220 | 500 | 30 | 12~18 | 40 |
| 20Cr2Ni4A | HB220 | 400 | 16 | 12~18 | 25 |
| 20Cr2Ni4A | HB220 | 300 | 10 | 12~18 | 14 |
| 20Cr2Ni4A | HB220 | 300 | 12 | 12~18 | 9 |
| 20Cr2Ni4A | HB280 | 350 | 10 | 14~20 | 7 |
| 20Cr2Ni4A | HRC30 | 500 | 20 | 14~20 | 18 |
| 20Cr2Ni4A | HRC32 | 400 | 15 | 16~22 | 22 |
| 20Cr2Ni4A | HRC32 | 350 | 10 | 16~22 | 6 |
| 20Cr2Ni4A | HRC32 | 320 | 7 | 16~22 | 5 |
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without deviating from the technical principle of the utility model, several improvement and deformations can also be made, these change
It also should be regarded as the protection scope of the utility model into deformation.
Claims (8)
1. a kind of turning clamp of thin-walled ring parts, it is characterised in that: by the identical fan-deck card claw type of multiple structures at one
Cirque structure, whens multiple sector claws work, but do not contact infinite approach；Fan-shaped claw is the boss knot with positioning surface (3)
Structure, boss are equipped with inner hole supporting surface I and outer circle supporting surface II；On the inner hole supporting surface I and outer circle supporting surface II circumferentially
It is opposite with part penetration of a cutting tool Impact direction equipped with a plurality of parallel hangnail tilted down；In the handover of supporting surface and positioning surface (3)
Place is equipped with slope inwardly angled with axis.
2. a kind of turning clamp of thin-walled ring parts according to claim 1, it is characterised in that: the outer bowlder of clamping, circle
The diameter of bore of ring structure is greater than part outside diameter 1-2mm.
3. a kind of turning clamp of thin-walled ring parts according to claim 1, it is characterised in that: when clamping inner hole, circle
The outside diameter of ring structure is less than inner bore of part 1-2mm.
4. a kind of turning clamp of thin-walled ring parts according to claim 1, it is characterised in that: fan-shaped claw hardness control
System is between 30 >=HRC >=35.
5. a kind of turning clamp of thin-walled ring parts according to claim 1, it is characterised in that: the hangnail is designed as
Spiral shape.
6. a kind of turning clamp of thin-walled ring parts according to claim 1, it is characterised in that: supporting surface and positioning surface
(3) junction is equipped with axis into 20 ° of slope.
7. a kind of turning clamp of thin-walled ring parts according to claim 1, it is characterised in that: the support of fan-shaped claw
Height of the face bottom away from positioning surface is 3/4ths of boss height.
8. a kind of turning clamp of thin-walled ring parts according to claim 1-7, it is characterised in that: along sector
Claw axial direction certain altitude is equipped with hangnail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821549768.4U CN209139861U (en) | 2018-09-21 | 2018-09-21 | A kind of turning clamp of thin-walled ring parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821549768.4U CN209139861U (en) | 2018-09-21 | 2018-09-21 | A kind of turning clamp of thin-walled ring parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209139861U true CN209139861U (en) | 2019-07-23 |
Family
ID=67267924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821549768.4U Active CN209139861U (en) | 2018-09-21 | 2018-09-21 | A kind of turning clamp of thin-walled ring parts |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209139861U (en) |
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2018
- 2018-09-21 CN CN201821549768.4U patent/CN209139861U/en active Active
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