CN204603482U - Internal-expansion type external toothing gear-shaping clamp - Google Patents

Internal-expansion type external toothing gear-shaping clamp Download PDF

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Publication number
CN204603482U
CN204603482U CN201520182755.8U CN201520182755U CN204603482U CN 204603482 U CN204603482 U CN 204603482U CN 201520182755 U CN201520182755 U CN 201520182755U CN 204603482 U CN204603482 U CN 204603482U
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China
Prior art keywords
pin
workpiece
pull bar
pedestal
radial
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Active
Application number
CN201520182755.8U
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Chinese (zh)
Inventor
焦继松
张立平
赵红军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jiangsu Pacific Precision Forging Co Ltd
Jiangsu Pacific Ocean Gear Transmission Co Ltd
Original Assignee
Jiangsu Pacific Precision Forging Co Ltd
Jiangsu Pacific Ocean Gear Transmission Co Ltd
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Application filed by Jiangsu Pacific Precision Forging Co Ltd, Jiangsu Pacific Ocean Gear Transmission Co Ltd filed Critical Jiangsu Pacific Precision Forging Co Ltd
Priority to CN201520182755.8U priority Critical patent/CN204603482U/en
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Publication of CN204603482U publication Critical patent/CN204603482U/en
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Abstract

The utility model discloses a kind of internal-expansion type external toothing gear-shaping clamp, it is made up of jointly pedestal, pull bar, screw rod, open washer, pin and spring.Described base stand location is arranged on supporting slotting machine workbench, pull rod shaft is in insertion pedestal endoporus, pull bar upper end is provided with outer-hexagonal and settles the annular groove of open washer, pull bar upper end is provided with the screw rod for axial adjustment between two parties, at the same circumferentially uniform radial direction through hole of the corresponding workpiece inner wall of pull bar, the pin that in every radial direction through hole, an equipped interradicular space coordinates.Screw rod bottom forms radial displacement adjustable structure with pin inner cooperation.The utility model supports workpiece inner wall by uniform pin on the one hand, adds in process the rigidity enhancing workpiece in slotting, reduces cutting deformation.The fit clearance of workpiece and pedestal divided equally by the pin stretched out by radial equivalent on the other hand, is conducive to like this improving positioning precision.

Description

Internal-expansion type external toothing gear-shaping clamp
Technical field
The utility model relates to a kind of machining fixture, and specifically, the utility model relates to a kind of mandrel class fixture for shaping, and this fixture is used for external toothing radial location gear shaping.
Background technology
External toothing is the basic component of synchronized in automobile gearbox, and this kind of thin wall cylinder-shaped external toothing is directly used in transmitting torque.The accuracies of form and position such as external toothing circularity and circular runout are comparatively large on transmission quality impact, and in manufacture process, Gear Shaping is critical process, and the principal element affecting Gear Shaping quality is the location structure of matched clamp.Now, the industry generally adopts expansion core class or optical axis class fixture as external toothing location slotting fixture, and the clamp structure of prior art is relatively simple, installs easily, can effective location.Because expansion core axle or optical axis and external toothing inner hole are matched in clearance, add in gear shaping process and there is radial load between cutter and workpiece, radial load facilitates the location fit error of workpiece and fixture, must affect Gear Shaping quality.Although expansion core axle can eliminate the radial fit gap with workpiece by elastic deformation, thin-walled external toothing is because of self rigidity deficiency, very sensitive to the radial load applied, when historical facts or anecdotes border uses, expansion core axle cannot abundant swelling workpiece, and workpiece can not get reliably locating affecting gear shaping efficiency and gear shaping quality.
Utility model content
The utility model, mainly for the deficiencies in the prior art, proposes a kind of location structure simple, and it is convenient to install, and locates reliable internal-expansion type external toothing gear-shaping clamp.This fixture workpiece spindle to the basis of radial location on make axial compression.Guarantee that workpiece makes Gear Shaping after elimination radial clearance.
The utility model is achieved through the following technical solutions technical goal.
Internal-expansion type external toothing gear-shaping clamp, it is made up of jointly pedestal, pull bar, screw rod, open washer, pin and spring.Described pedestal is the setting element of built-in axially extending bore, and bottom shoulder coordinates with supporting slotting machine table positions, and shoulder endoporus upward and workpiece small end outer wall matched in clearance, this shoulder outer diameter is less than workpiece root circle.Described pull bar upper end is provided with outer-hexagonal and the annular groove with open washer matched in clearance, and pull bar from top to bottom runs through pedestal axially extending bore, exposes the external thread section of pull bar for connecting external draw-gear from base bottom.Its improvements are: described pull bar upper end is provided with the screw rod for axial adjustment between two parties, at same circumferentially uniform 3 ~ 6 radial direction through hole of the corresponding workpiece inner wall of pull bar, the pin that in every radial direction through hole, an equipped interradicular space coordinates, pin is provided with spring between the inner, axially adjustable screw rod bottom coordinates with pin the inner, forms pin radial displacement adjustable structure.
In said structure, described pin length is equal, and one end is outwardly semicircle head, and one end is inwardly provided with 40 0~ 50 0chamfering.Pedestal shoulder external diameter upward and open washer external diameter 2 ~ 4mm less of the root circle of workpiece.Screw flight is fine thread, is convenient to fine radial displacement.Spring is compression spring, is convenient to pin return.
The utility model compared with prior art, has following good effect:
1, simple, easy to manufacture, the flexible adjustment of pin radial displacement structure;
2, the fit clearance of workpiece and pedestal divided equally by the pin that radial equivalent is stretched out, and is conducive to improving positioning precision;
3, uniform pin radial support workpiece inner wall, plays the effect strengthening workpiece rigidity, is conducive to reducing cutting deformation.
Accompanying drawing explanation
Fig. 1 is the utility model structural profile schematic diagram.
Fig. 2 is the structure enlarged diagram that screw rod coordinates with pin.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Embodiment shown in Fig. 1 is the internal-expansion type external toothing gear-shaping clamp for synchronized external toothing processing in sedan gear-box, and it is made up of jointly pedestal 1, pull bar 2, screw rod 3, open washer 4, pin 5 and spring 6.Described pedestal 1 is a kind of setting element of built-in axially extending bore, it coordinates with supporting slotting machine table positions with bottom shoulder, shoulder endoporus upward and workpiece 7 smaller diameter end outer wall matched in clearance, for the ease of Gear Shaping, this shoulder outer diameter is equal to the external diameter of open washer 4.For convenience of quick dispatch, the external diameter of pedestal 1 shoulder external diameter upward and open washer 4 is all little than the root circle of workpiece 7, all little 3mm of the present embodiment.Described pull bar 2 is the compressing members transmitting power, and it is similar to bolt, and upper end is provided with outer-hexagonal and settles the annular groove of open washer 4.The perpendicular pull bar 2 put from top to bottom runs through pedestal 1 axially extending bore, forms the positioning compression structure coaxial with pedestal 1.This structure treats that workpiece 7 is placed in pedestal 1 shoulder hole upward, then is inserted from the side in the annular groove of pull bar 2 by open washer 4.The perpendicular pull bar 2 put exposes a joint external thread section from pedestal 1 bottom, and external thread section herein, for connecting external draw-gear, makes pull bar 2 with external draw-gear knee-action.External draw-gear in the present embodiment is cylinder, the linkage pull rod 2 when the descent of piston of cylinder, and the open washer 4 dynamic with pull bar 2 is exerted pressure workpiece 7.Otherwise the piston stroking upward of cylinder, then the pull bar 2 linked raises and loosens and clamps workpiece 7, and workpiece 7 is a kind of external toothings, belongs to typical thin-wall part, and its structural rigidity is poor, not responsive to radial Z-TEK.In order to improve the rigidity of workpiece 7 when shaping, and eliminate workpiece 7 with pedestal 1 towards upper shoulder inner hole gap on the impact of gear shaping quality, the utility model is on the basis of above-mentioned positioning compression structure, pin displacement adjustable structure has as shown in Figure 2 been set up again on pull bar 2, concrete structure is the screw rod 3 that pull bar 2 upper end is provided with between two parties for axial adjustment, at same circumferentially uniform 4 radial direction through hole of pull bar 2 corresponding workpiece 7 inwall, the pin 5 that in every radial direction through hole, an equipped interradicular space coordinates, screw rod 3 bottom coordinates pin 5 inner.Pin 5 used is isometric, and pin 5 one end is outwardly semicircle head, and one end is inwardly provided with 45 0chamfering, is provided with spring 6 between pin 5, this spring 6 is compression spring.Turn screw rod 3 can regulate the radial position of pin 5, rotary screw 3 makes pin 5 stretch out the inwall of workpiece pressing 7 to the right, supporting role strengthening workpiece 7 positioning and rigid on pedestal 1 on the one hand of pin 5, it is on the other hand the fit clearance that pin 5 that radial equivalent is stretched out has divided equally workpiece 7 and pedestal 1, its result is conducive to improving positioning precision, the negative effect of effective minimizing radial load, is conducive to the gear shaping quality improving workpiece 7.Left-handed screw 3 cancels the constraint of pin 5 pairs of workpiece 7, is convenient to workpiece 7 and loads and unloads.In the utility model, the radial displacement of pin 5 is very little, and in order to improve fine setting quality, the screw rod 3 in the present embodiment adopts the fine thread of M10 × 1.

Claims (5)

1. an internal-expansion type external toothing gear-shaping clamp, it is made up of jointly pedestal (1), pull bar (2), screw rod (3), open washer (4), pin (5) and spring (6); The setting element that described pedestal (1) is built-in axially extending bore, bottom shoulder coordinates with supporting slotting machine table positions, shoulder endoporus upward and workpiece (7) smaller diameter end outer wall matched in clearance, and this shoulder outer diameter is less than workpiece (7) root circle; Described pull bar (2) upper end is provided with outer-hexagonal and settles the annular groove of open washer (4), and pull bar (2) from top to bottom runs through pedestal (1) axially extending bore, exposes the external thread section of pull bar (2) for connecting external draw-gear from pedestal (1) bottom; It is characterized in that: described pull bar (2) upper end is provided with the screw rod (3) for axial adjustment between two parties, at same circumferentially uniform 3 ~ 6 radial direction through hole of pull bar (2) corresponding workpiece (7) inwall, the pin (5) that in every radial direction through hole, an equipped interradicular space coordinates, spring (6) is provided with between pin (5) the inner, axially adjustable screw rod (3) bottom coordinates with pin (5) the inner, forms pin (5) radial displacement adjustable structure.
2. internal-expansion type external toothing gear-shaping clamp according to claim 1, it is characterized in that: described pin (5) length is equal, one end is outwardly semicircle head, and one end is inwardly provided with 40 0~ 50 0chamfering.
3. internal-expansion type external toothing gear-shaping clamp according to claim 1, is characterized in that: described pedestal (1) shoulder external diameter upward and open washer (4) external diameter 2 ~ 4mm less of the root circle of workpiece (7).
4. internal-expansion type external toothing gear-shaping clamp according to claim 1, is characterized in that: the screw thread of described screw rod (3) is fine thread.
5. internal-expansion type external toothing gear-shaping clamp according to claim 1, is characterized in that: described spring (6) is compression spring.
CN201520182755.8U 2015-03-30 2015-03-30 Internal-expansion type external toothing gear-shaping clamp Active CN204603482U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520182755.8U CN204603482U (en) 2015-03-30 2015-03-30 Internal-expansion type external toothing gear-shaping clamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520182755.8U CN204603482U (en) 2015-03-30 2015-03-30 Internal-expansion type external toothing gear-shaping clamp

Publications (1)

Publication Number Publication Date
CN204603482U true CN204603482U (en) 2015-09-02

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Application Number Title Priority Date Filing Date
CN201520182755.8U Active CN204603482U (en) 2015-03-30 2015-03-30 Internal-expansion type external toothing gear-shaping clamp

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CN (1) CN204603482U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104801785A (en) * 2015-03-30 2015-07-29 江苏太平洋齿轮传动有限公司 Radial positioning type external gear ring gear shaping clamp
CN105665844A (en) * 2016-03-29 2016-06-15 苏州市合叶精密机械有限公司 Fixture tool for gear shaping processing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104801785A (en) * 2015-03-30 2015-07-29 江苏太平洋齿轮传动有限公司 Radial positioning type external gear ring gear shaping clamp
CN105665844A (en) * 2016-03-29 2016-06-15 苏州市合叶精密机械有限公司 Fixture tool for gear shaping processing

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