CN210475756U - Gear clamp adopting coaxial positioning auxiliary clamping mode - Google Patents

Gear clamp adopting coaxial positioning auxiliary clamping mode Download PDF

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Publication number
CN210475756U
CN210475756U CN201921292147.7U CN201921292147U CN210475756U CN 210475756 U CN210475756 U CN 210475756U CN 201921292147 U CN201921292147 U CN 201921292147U CN 210475756 U CN210475756 U CN 210475756U
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CN
China
Prior art keywords
positioning
gear
clamp body
clamping
bevel gear
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Active
Application number
CN201921292147.7U
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Chinese (zh)
Inventor
刘浩
毕青善
蒋浩
李国宝
时谦
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.)
Anhui Tianrui Precision Auto Parts Co ltd
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Anhui Tianrui Precision Auto Parts Co ltd
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Application filed by Anhui Tianrui Precision Auto Parts Co ltd filed Critical Anhui Tianrui Precision Auto Parts Co ltd
Priority to CN201921292147.7U priority Critical patent/CN210475756U/en
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Publication of CN210475756U publication Critical patent/CN210475756U/en
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Abstract

The utility model provides an adopt gear clamp of coaxial positioning auxiliary clamping mode, including the installation axle, the location chuck, the clamping piece, install the axle vertical installation on the lathe, location chuck coaxial arrangement is in installation off-axial portion and the location chuck is used for treating the gear to carry out coaxial positioning and supplementary centre gripping, the clamping piece is used for treating the gear to press from both sides tightly it after the machined part location centre gripping at the location chuck, the location chuck includes the anchor clamps body, the dish gear, the bevel gear shaft, the location jack catch, anchor clamps body coaxial fixed mounting is in installation off-axial portion, the clamping piece includes the centre gripping bolt, the centre gripping dish, the coaxial fixed mounting of centre gripping dish is in the outside of anchor clamps body and the centre gripping dish is located location jack catch below, install and the centre gripping bolt is located location jack catch top with the.

Description

Gear clamp adopting coaxial positioning auxiliary clamping mode
Technical Field
The invention relates to the field of gear machining, in particular to a gear clamp.
Background
At present, when teeth are machined, the adopted clamps are all fixed by common clamps, the fixing mode is a multi-point fixing mode, therefore, when the gears are fixed, sometimes the end faces of the gears are damaged due to overlarge fixing force of a certain point, in particular, when the gears with thinner thickness are clamped, defective products are likely to occur, besides, in the prior art, the upper end of the gear clamp is generally extended outwards, so that the size of the clamp can adapt to the size of the gears to be machined, the equipment can be fully utilized, and the cost can be saved, but the problem exists in the method, because the size of the clamp is larger than the size of a rotary worktable in the gear machining equipment, the edge of the clamp generates an overturning moment, the machining precision of the gears is not high, and the machining efficiency of the gears is reduced, therefore, the utility model provides a gear clamp which not only can be suitable for clamping the gears with different inner diameters to be machined, the condition that cracks appear on the inner ring and the outer ring of the gear to-be-machined part can be effectively avoided.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a gear clamp which can be suitable for gears to be machined with different inner diameters, so that the gears with different inner diameters are machined without replacing a machine tool, and the application range is wider.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows.
The gear clamp adopting the coaxial positioning auxiliary clamping mode comprises an installation shaft, a positioning chuck and a clamping piece, wherein the installation shaft is vertically installed on a machine tool, the positioning chuck is coaxially installed outside the installation shaft and is used for coaxially positioning and assisting clamping a gear workpiece to be machined, and the clamping piece is used for clamping the gear workpiece to be machined after the positioning chuck positions and clamps the gear workpiece to be machined;
the positioning chuck comprises a clamp body, a disc gear, a bevel gear shaft and a positioning claw, wherein the clamp body is of an annular cylinder structure provided with an inner cavity, and is coaxially and fixedly arranged outside the mounting shaft;
the disc gear is coaxially and movably arranged outside the inner ring wall of the fixture body and can rotate around the axial direction of the disc gear, and the disc gear is movably arranged outside the inner ring wall of the fixture body through a bearing;
the outer circular surface of the clamp body is provided with an avoidance hole communicated with the inner cavity of the clamp body, the bevel gear shaft is coaxially and movably arranged in the avoidance hole and can axially rotate around the bevel gear shaft, one end of the bevel gear shaft is positioned in the avoidance hole and is provided with a regular hexagonal bolt groove in a matching way, the other end of the bevel gear shaft is positioned in the clamp body, the bevel gear is coaxially and fixedly arranged outside the bevel gear shaft and is meshed with the disc gear, and the bevel gear rotates and can pull the disc gear to rotate;
the outer part of the clamp body is also provided with a guide hole communicated with the inner cavity of the clamp body, the end face of the disc gear, which is far away from the tooth surface of the disc gear, is provided with a plane thread, one end of the positioning claw is provided with a linkage protrusion, the linkage protrusion is positioned in the plane thread, the other end of the positioning claw penetrates through the guide hole and is positioned outside the clamp body, the end is a positioning end, the positioning claw and the guide hole form sliding guide fit, the disc gear rotates and can drive the positioning claw to move away from or close to the axle center of the clamp body through the cooperation of the linkage protrusion and the plane thread, three groups of the positioning claws are arranged in an array along the circumferential direction of the clamp body, and the three;
the clamping piece comprises a clamping bolt and a clamping disc, the clamping disc is coaxially and fixedly installed outside the clamp body and is located below the positioning clamping jaw, the clamping bolt is installed between the outer circular surface of the clamp body in a threaded connection mode, and the clamping bolt is located above the positioning clamping jaw.
As a further improvement of the present solution.
The positioning end of the positioning claw is provided with arc contact blocks in an arc block structure, three groups of arc contact blocks are correspondingly arranged, and the three groups of arc contact blocks jointly form a complete circular ring structure coaxially arranged with the clamp body.
As a further improvement of the present solution.
The bevel gear shafts/bevel gears are arranged in three groups along the circumferential direction of the clamp body in an array mode, and the avoidance holes formed in the outer circular surface of the clamp body are correspondingly arranged in three groups.
Compared with the prior art, the positioning chuck has the advantages that the positioning chuck can be suitable for gears to be machined with different inner diameters, a machine tool does not need to be replaced when the gears with different inner diameters are machined, the application range is wider, meanwhile, the positioning chuck can enable the coaxial precision between the gears to be machined and the installation shaft to be better, even if the position deviation between the gears to be machined and the machine tool is smaller, the positioning chuck can assist the clamping piece to clamp the gears, and in addition, the arc-shaped contact block arranged at the positioning end of the positioning clamping jaw can effectively avoid the occurrence of cracks on the inner ring/outer ring of the gears to be machined.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following embodiments will be provided
The drawings that need to be used are briefly introduced, it being clear that the drawings in the following description are only some embodiments of the invention, and that further drawings can be derived from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural diagram of the positioning chuck of the present invention.
Fig. 3 is a schematic view of the internal structure of the positioning chuck of the present invention.
Fig. 4 is a schematic view of the internal structure of the positioning chuck of the present invention.
Labeled as:
10. installing a shaft;
20. positioning the chuck; 21. a clamp body; 22. a disc gear; 23. a bevel gear; 24. positioning the clamping jaw; 25. an arc-shaped contact block;
30. clamping the bolt;
40. and clamping the disc.
Detailed Description
The technical scheme in the embodiment of the invention will be clear and complete by combining the attached drawings in the embodiment of the invention
In the description, it is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the gear clamp adopting the coaxial positioning auxiliary clamping manner includes an installation shaft 10, a positioning chuck 20, and a clamping element, wherein the installation shaft 10 is vertically installed on a machine tool, the positioning chuck 20 is coaxially installed outside the installation shaft 10, the positioning chuck 20 is used for coaxially positioning and auxiliary clamping a gear workpiece, and the clamping element is used for clamping the gear workpiece after the positioning chuck 20 positions and clamps the gear workpiece.
As shown in fig. 2-4, the positioning chuck 20 includes a clamp body 21, a disc gear 22, a bevel gear 23, a bevel gear shaft, and a positioning claw 24, the clamp body 21 is a circular cylindrical structure provided with an inner cavity, and the clamp body 21 is coaxially and fixedly mounted outside the mounting shaft 10; the way that the mounting shaft 10 is vertically mounted on the machine tool and the clamp body 21 is coaxially and fixedly mounted outside the mounting shaft 10 is the prior art, and detailed description thereof is omitted here.
As shown in fig. 2-4, the disk gear 22 is coaxially and movably mounted outside the inner annular wall of the clamp body 21 and can rotate around itself axially, and specifically, the disk gear 22 is movably mounted outside the inner annular wall of the clamp body 21 through a bearing.
The outer disc of the fixture body 21 is provided with an avoidance hole communicated with an inner cavity of the fixture body, the bevel gear shaft is coaxially and movably mounted in the avoidance hole and can axially rotate around the bevel gear shaft, one end of the bevel gear shaft is located in the avoidance hole, a regular hexagonal bolt groove is formed in the end of the bevel gear shaft in a matched mode, the other end of the bevel gear shaft is located in the fixture body 21, the bevel gear 23 is coaxially and fixedly mounted outside the bevel gear shaft, the bevel gear 23 is meshed with the disc gear 22, and the bevel gear 23 rotates and can pull the disc gear 22 to rotate.
The outer portion of the clamp body 21 is further provided with a guide hole communicated with an inner cavity of the clamp body, a planar thread is arranged on the end face of the disc gear 22, which is far away from the tooth surface of the disc gear, a linkage protrusion is arranged at one end of the positioning claw 24, the linkage protrusion is located in the planar thread, the other end of the positioning claw penetrates through the guide hole and is located outside the clamp body 21, the positioning claw 24 and the guide hole form sliding guide fit, the disc gear 22 rotates, and the positioning claw 24 can be driven to move away from or close to the axis of the clamp body 21 through the cooperation of the linkage protrusion and the planar thread, preferably, three groups of the positioning claws 24 are arranged in an array along the circumferential direction of the clamp body 21, and three groups of the guide holes are correspondingly arranged.
As shown in fig. 1-2, the clamping member includes a clamping bolt 30, a clamping disk 40, the clamping disk 40 is coaxially and fixedly mounted on the outside of the clamp body 21, the clamping disk 40 is located below the positioning jaws 24, the clamping bolt 30 is mounted in a threaded connection with the outer circumferential surface of the clamp body 21, and the clamping bolt 30 is located above the positioning jaws 24.
When the gear is actually clamped, a worker places a gear to-be-machined piece outside the clamp body 21 and horizontally places the gear on the clamping disc 40 under the action of gravity, then the worker stretches a wrench and other existing tools into a bolt groove arranged on the bevel gear shaft, the bevel gear shaft is rotated through the wrench and finally the disc gear 22 is rotated, the disc gear 22 rotates and can drive the positioning clamping jaw 24 to move away from the axis of the clamp body 21 through the matching of the linkage protrusion and the plane thread, so that the positioning end of the positioning clamping jaw 24 is in contact with the inner ring of the gear to-be-machined piece and is positioned and abutted, and then the worker can clamp the gear to-be-machined piece by screwing the clamping bolt 30; the significance of the positioning chuck 20 lies in that the positioning chuck 20 is applicable to treat the machined part in the gears of different internal diameters, so that the machine tool does not need to be replaced when the gears of different internal diameters are machined, the application range is wider, meanwhile, the positioning chuck 20 can enable the gears to treat the machined part and the coaxial precision between the installation shaft 10 to be better, and even if the gear treats that the position deviation between the machined part and the machine tool is smaller, in addition, the positioning chuck 20 can also assist the clamping part to clamp the gear.
Preferably, the positioning jaw 24 is used for achieving the purpose of positioning and clamping by abutting against the inner ring of the gear to-be-machined part, and meanwhile, the gear to-be-machined part is thin, so that cracks may occur on the inner ring and the outer ring of the gear to-be-machined part, in order to solve the problem, the positioning end of the positioning jaw 24 is provided with arc contact blocks 25 in an arc block structure, the arc contact blocks 25 are correspondingly provided with three groups, and the three groups of arc contact blocks 25 jointly form a complete circular ring structure coaxially arranged with the clamp body 21; the three groups of arc-shaped contact blocks 25 are in contact with the inner ring of the gear to-be-machined part, so that the acting force between the three groups of arc-shaped contact blocks and the inner ring of the gear to-be-machined part is uniformly distributed, and the condition that cracks appear on the inner ring and the outer ring of the gear to-be-machined part can be effectively avoided.
Preferably, when the gear to be machined is subjected to a gear hobbing process, the machine tool pulls the gear to be machined to slowly rotate through the mounting shaft 10, so that the positions of the avoidance holes formed in the outer circular surface of the clamp body 21 are changed, that is, when a worker positions and abuts against the gear to be machined in the next gear machining process, force is not conveniently applied to the bevel gear shaft, in order to solve the problem, three groups of bevel gear shafts/bevel gears 23 are arranged in an array along the circumferential direction of the clamp body 21, and three groups of avoidance holes formed in the outer circular surface of the clamp body 21 are correspondingly arranged; when the worker positions and tightly abuts the gear to-be-machined piece in the next gear machining process, because the bevel gear shaft/bevel gear 23/avoiding hole is provided with three groups, one group of bevel gear shaft/bevel gear 23/avoiding hole is always positioned at a position where the worker can conveniently apply force.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (4)

1. The gear clamp adopting the coaxial positioning auxiliary clamping mode is characterized by comprising an installation shaft, a positioning chuck and a clamping piece, wherein the installation shaft is vertically installed on a machine tool;
the positioning chuck comprises a clamp body, a disc gear, a bevel gear shaft and a positioning claw, wherein the clamp body is of an annular cylinder structure provided with an inner cavity, and is coaxially and fixedly arranged outside the mounting shaft;
the disc gear is coaxially and movably arranged outside the inner ring wall of the fixture body and can rotate around the axial direction of the disc gear, and the disc gear is movably arranged outside the inner ring wall of the fixture body through a bearing;
the outer circular surface of the clamp body is provided with an avoidance hole communicated with the inner cavity of the clamp body, the bevel gear shaft is coaxially and movably arranged in the avoidance hole and can axially rotate around the bevel gear shaft, one end of the bevel gear shaft is positioned in the avoidance hole and is provided with a regular hexagonal bolt groove in a matching way, the other end of the bevel gear shaft is positioned in the clamp body, the bevel gear is coaxially and fixedly arranged outside the bevel gear shaft and is meshed with the disc gear, and the bevel gear rotates and can pull the disc gear to rotate;
the outer portion of the clamp body is further provided with a guide hole which is connected and communicated with an inner cavity of the clamp body, a plane thread is arranged on the end face of the disc gear, which deviates from the tooth surface of the disc gear, a linkage protrusion is arranged at one end of the positioning clamping jaw, the linkage protrusion is located in the plane thread, the other end of the positioning clamping jaw penetrates through the guide hole and is located at the outer portion of the clamp body, the positioning clamping jaw is a positioning end, a sliding guide fit is formed between the positioning clamping jaw and the guide hole, the disc gear rotates and can drive the positioning clamping jaw to move away from or close to the axle center of the clamp body through the cooperation of the linkage protrusion and the plane thread, three groups of the positioning clamping jaws are arranged.
2. The gear clamp adopting the coaxial positioning auxiliary clamping manner as claimed in claim 1, wherein the clamping member comprises a clamping bolt and a clamping disk, the clamping disk is coaxially and fixedly arranged outside the clamp body and is positioned below the positioning claw, the clamping bolt is arranged in a threaded manner with an outer circular surface of the clamp body and is positioned above the positioning claw.
3. The gear clamp adopting the coaxial positioning auxiliary clamping manner according to claim 2, wherein the positioning end of the positioning claw is provided with three groups of arc-shaped contact blocks in an arc-block structure, and the three groups of arc-shaped contact blocks together form a complete circular ring structure coaxially arranged with the clamp body.
4. The gear clamp adopting the coaxial positioning auxiliary clamping manner as claimed in claim 2 or 3, wherein the bevel gear shafts/bevel gears are arranged in three groups in an array along the circumferential direction of the clamp body, and the avoidance holes arranged on the outer circumferential surface of the clamp body are correspondingly arranged in three groups.
CN201921292147.7U 2019-08-12 2019-08-12 Gear clamp adopting coaxial positioning auxiliary clamping mode Active CN210475756U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921292147.7U CN210475756U (en) 2019-08-12 2019-08-12 Gear clamp adopting coaxial positioning auxiliary clamping mode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921292147.7U CN210475756U (en) 2019-08-12 2019-08-12 Gear clamp adopting coaxial positioning auxiliary clamping mode

Publications (1)

Publication Number Publication Date
CN210475756U true CN210475756U (en) 2020-05-08

Family

ID=70536099

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201921292147.7U Active CN210475756U (en) 2019-08-12 2019-08-12 Gear clamp adopting coaxial positioning auxiliary clamping mode

Country Status (1)

Country Link
CN (1) CN210475756U (en)

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