CN110303361B - Universal turning clamp for rear axle gear shaft parts - Google Patents

Universal turning clamp for rear axle gear shaft parts Download PDF

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Publication number
CN110303361B
CN110303361B CN201910582622.2A CN201910582622A CN110303361B CN 110303361 B CN110303361 B CN 110303361B CN 201910582622 A CN201910582622 A CN 201910582622A CN 110303361 B CN110303361 B CN 110303361B
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China
Prior art keywords
spring
sliding block
expansion sleeve
clamp
block
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CN201910582622.2A
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CN110303361A (en
Inventor
刘井泽
周仁杰
袁博
王乐
王健夫
张明玮
杨永修
张兴野
仉天玺
郑文涛
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FAW Group Corp
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FAW Group Corp
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/12Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q2703/00Work clamping
    • B23Q2703/02Work clamping means
    • B23Q2703/10Devices for clamping workpieces of a particular form or made from a particular material

Abstract

The invention belongs to the technical field of mechanical manufacturing, and relates to a universal turning clamp for rear axle gear shaft parts. The clamping device comprises a base, a spring sliding block, a spring baffle, a clamp body, an expansion sleeve, a left tip, a right tip, a dovetail sliding block and a clamping block; the base is provided with a blind hole, the spring and the spring sliding block are placed in the blind hole, the spring baffle plate is fixedly connected with the base through a locking bolt, and the clamp body is fixedly connected with the spring baffle plate through the locking bolt; the expansion sleeve is placed in the clamp body and is connected with the external thread on the spring sliding block through the internal thread of the left center, so that the expansion sleeve is fixed on the spring sliding block, and the expansion sleeve and the left center can move along with the spring sliding block; the dovetail sliding block is fixed on the expansion sleeve, and the clamping block is fixed on the dovetail sliding block; the right centre is fixed on the tailstock of the machine tool. The height of the clamp block can be adjusted according to the diameter of the face cone of the machined driving bevel gear part, the angle of the clamp block is adjusted according to the angle of the face cone, and the clamp block is high in universality and high in working efficiency.

Description

Universal turning clamp for rear axle gear shaft parts
Technical Field
The invention belongs to the technical field of mechanical manufacturing, and relates to a universal turning clamp for rear axle gear shaft parts.
Background
In the process of machining a driving bevel gear part in a rear axle gear, turning is generally used to ensure the precision of the shaft part.
At present, in the turning process of a driving bevel gear, the following three clamping modes are commonly used:
(1) one-clamp one-top clamping: firstly, one end of a part is clamped by a three-jaw self-centering chuck, and turning is carried out after the other end of the part is tightly propped by a tailstock center of a machine tool, so that the clamping mode is low in efficiency, and the part is easy to deform in the clamping process, so that the positioning precision is reduced;
(2) clamping two centers: two centers are used for tightly supporting parts, and the chicken heart clamp is used for assisting in clamping, so that turning processing is carried out. The clamping mode has extremely low efficiency and unreliable clamping, and the cutter is easy to damage due to pause during reversing turning.
(3) Clamping by adding end face drive to two centers: in the process of turning the gear blank, two centers are used for tightly supporting the part and an end face drive auxiliary drive is added for turning. The clamping mode is suitable for small-batch processing.
At present, no universal clamp for machining rear axle gear shaft parts exists in patent documents.
Disclosure of Invention
There are three problems with current end face drive arrangements:
1) the end face driving auxiliary clamping is usually a special auxiliary support and is only suitable for turning one part;
2) the end face driving auxiliary clamp cannot achieve the effect of friction driving on parts with hardness higher than that of the end face driving;
3) the end face driving auxiliary clamping easily damages the end face of the part and influences the shape and position accuracy such as flatness.
The invention overcomes the problems in the prior art and provides a universal turning clamp for rear axle gear shaft parts.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme, which is described by combining the accompanying drawings as follows:
a universal turning clamp for rear axle gear shaft parts comprises a base 1, a spring 2, a spring sliding block 3, a spring baffle 4, a clamp body 5, an expansion sleeve 6, a left tip 7, a right tip 10, a dovetail sliding block 8 and a clamping block 11;
the base 1 is provided with a blind hole, the spring 2 and the spring sliding block 3 are placed in the blind hole, and the spring baffle 4 is fixedly connected with the base 1 through a locking bolt to limit the moving stroke of the spring 2 and the spring sliding block 3 in the base 1;
the clamp body 5 is fixedly connected with the spring baffle 4 through a locking bolt;
the expansion sleeve 6 is placed in the clamp body 5 and is connected with the external thread on the spring sliding block 3 through the internal thread of the left top center 7, so that the expansion sleeve 6 is fixed on the spring sliding block 3, and the expansion sleeve 6 and the left top center 7 can move along with the spring sliding block 3;
the dovetail sliding block 8 is fixed on the expansion sleeve 6, and the clamping block 11 is fixed on the dovetail sliding block 8;
the right centre 10 is fixed on the tailstock of the machine tool.
In the technical scheme, the dovetail slide blocks 8 are divided into a first dovetail slide block, a second dovetail slide block and a third dovetail slide block which are uniformly distributed and fixed on the expansion sleeve 6.
In the technical scheme, the clamping block 11 is a nylon block.
In the technical scheme, the base 1 is arranged on a main shaft head and is fixed by a locking bolt through taper fit of a taper hole and the main shaft head.
Compared with the prior art, the invention has the beneficial effects that:
1. the clamp can be adjusted in height according to the size of the face cone diameter of the machined driving bevel gear part, and the angle of the clamping block is adjusted according to the face cone angle, so that the universality of the clamp is improved;
2. the clamp can be arranged on a numerically controlled lathe and a general lathe for use, so that the universality of the equipment is improved.
3. The clamp tightly pushes the workpiece through the tailstock center to drive the left center to move backwards, drive the expansion sleeve to move backwards, and drive the clamping block to clamp the workpiece. The tailstock center is withdrawn, the left center is pushed to move forwards through the spring, the expansion sleeve is driven to move forwards to drive the clamping block to open, the workpiece is unloaded, and the working efficiency is greatly improved.
4. The clamp is clamped by soft materials, so that a workpiece cannot be damaged, and the surface quality of parts is protected.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is an exploded view of a universal turning fixture for rear axle gear shaft parts according to the present invention;
FIG. 2 is an axial cross-sectional view of the universal turning fixture for rear axle gear shaft parts according to the present invention;
FIG. 3 is a schematic view of a dovetail slide of the present invention;
wherein, 1 includes the base, 2 springs, 3 spring block, 4 spring baffle, 5 anchor clamps bodies, 6 cover that rises, 7 left centres, 9 parts by processing, 10 right centres, 8 forked tail sliders, 11 clamp tight blocks.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
as shown in figures 1-3, the invention provides a universal turning clamp for rear axle shaft parts, which comprises a base 1, a spring 2, a spring sliding block 3, a spring baffle 4, a clamp body 5, an expansion sleeve 6, a left tip 7, a right tip 10, a dovetail sliding block 8 and a clamping block 11. The method is characterized in that: the base 1 is arranged on the main shaft head and is fixed by a locking bolt through taper fit of a taper hole and the main shaft head. Be equipped with the blind hole in the base 1, during spring 2 placed the hole with spring slider 3, spring baffle 4 was connected fixedly through locking bolt and base 1, restriction spring 2 and spring slider 3 the removal stroke in base 1. The clamp body 5 is fixedly connected with the spring baffle 4 through a locking bolt. The expansion sleeve 6 is placed in the clamp body 5 and is connected with the external thread on the spring slide block 3 through the internal thread of the left tip 7, so that the expansion sleeve 6 is fixed on the spring slide block 3, and the expansion sleeve 6 and the left tip 7 can move along with the spring slide block 3. The dovetail slide block 8 is divided into a first dovetail slide block, a second dovetail slide block and a third dovetail slide block which are connected and fixed on the expansion sleeve 6 through two locking bolts. The clamping block 11 is made of soft materials, and the soft materials are nylon blocks. Is fixed to the dovetail slide 8 by bolting. The right centre 10 is fixed on the tailstock of the machine tool.
As shown in figure 2, when the device is used, firstly, the base 1 is connected with the main shaft and the connection precision reaches 0.01mm, the spring 2 is placed in the hole of the base 1, the spring sliding block 3 is matched with the inner hole of the base 1, the coaxial precision of the spring sliding block 3 reaches 0.01mm, and the spring sliding block 3 has a stroke of about 10mm in the base 1 after the spring baffle 4 is connected with the base 1. Connecting the clamp body 5 to the spring baffle 4, aligning the coaxiality of the inner hole of the clamp body 5 to be 0.02mm, placing the expansion sleeve into the clamp body 5, and fixing the expansion sleeve 6 between the spring slide block 3 and the left tip 7 by connecting the inner thread of the left tip 7 with the outer thread of the spring slide block 3. And aligning the coaxiality of the left center 7 to be 0.02 mm. Fix dovetail slide 8 to the cover 6 that rises, through work piece face awl diameter size, the angle size, 8 positions of adjustment dovetail slide make press from both sides tight piece 11 and open the diameter and be greater than about 2mm of face awl diameter, through locking bolt fixed dovetail slide 8 and press from both sides tight piece 11 position. During operation, will be processed the part and arrange in between top 7 in a left side and the top 10 in the right side, top 10 removal in the right side will be processed the part top tightly, promote top 7 in a left side and drive 3 compression spring 2 backward movements of spring block, drive simultaneously and rise cover 6 backward movement in the anchor clamps body 5, anchor clamps body 5 hole tapering compression rise cover 6 makes dovetail slide 8 drive and presss from both sides tight piece 11 backward movement, press from both sides tightly by 9 conical surfaces of processing part, when surface clamp force is greater than top 10 thrust in the right side, top 7 in a left side will no longer backward movement, and simultaneously, the tight power in top, the clamp force, it makes the part fix in anchor clamps to reach balance. Because the clamping block 11 is made of soft materials, the friction force is increased, and the jumping precision of clamping the two centers cannot be damaged. After the turning is finished, the right center retracts, the spring 2 pushes the spring slide block 3 to push the expansion sleeve 6 to move forwards, the expansion sleeve 6 is separated from the constraint of the inner hole taper of the clamp body 5 and is opened, and the workpiece is dismounted to finish the processing.

Claims (3)

1. The utility model provides a turning anchor clamps of axle class part behind general type, its characterized in that: the clamp comprises a base (1), a spring (2), a spring sliding block (3), a spring baffle (4), a clamp body (5), an expansion sleeve (6), a left tip (7), a right tip (10), a dovetail sliding block (8) and a clamping block (11);
the base (1) is provided with a blind hole, the spring (2) and the spring sliding block (3) are placed in the blind hole, and the spring baffle (4) is fixedly connected with the base (1) through a locking bolt to limit the moving stroke of the spring (2) and the spring sliding block (3) in the base (1);
the clamp body (5) is fixedly connected with the spring baffle (4) through a locking bolt;
the expansion sleeve (6) is placed in the clamp body (5), and is connected with the external thread on the spring sliding block (3) through the internal thread of the left center (7), so that the expansion sleeve (6) is fixed on the spring sliding block (3), and the expansion sleeve (6) and the left center (7) can move along with the spring sliding block (3);
the dovetail sliding block (8) is fixed on the expansion sleeve (6), and the clamping block (11) is fixed on the dovetail sliding block (8);
the right centre (10) is fixed on the tailstock of the machine tool;
the dovetail sliding blocks (8) are divided into first dovetail sliding blocks, second dovetail sliding blocks and third dovetail sliding blocks, and the dovetail sliding blocks are uniformly distributed and fixed on the expansion sleeve (6).
2. The universal turning clamp for rear axle gear shaft parts according to claim 1, wherein the universal turning clamp comprises:
the clamping block (11) is a nylon block.
3. The universal turning clamp for rear axle gear shaft parts according to claim 1, wherein the universal turning clamp comprises:
the base (1) is arranged on the spindle head and is fixed by a locking bolt through taper fit of a taper hole and the spindle head.
CN201910582622.2A 2019-07-01 2019-07-01 Universal turning clamp for rear axle gear shaft parts Active CN110303361B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910582622.2A CN110303361B (en) 2019-07-01 2019-07-01 Universal turning clamp for rear axle gear shaft parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910582622.2A CN110303361B (en) 2019-07-01 2019-07-01 Universal turning clamp for rear axle gear shaft parts

Publications (2)

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CN110303361A CN110303361A (en) 2019-10-08
CN110303361B true CN110303361B (en) 2021-06-11

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Application Number Title Priority Date Filing Date
CN201910582622.2A Active CN110303361B (en) 2019-07-01 2019-07-01 Universal turning clamp for rear axle gear shaft parts

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202539973U (en) * 2012-03-31 2012-11-21 重庆市旺成科技股份有限公司 Novel assembly clamp for automatically clamping workpiece
CN203380441U (en) * 2013-07-01 2014-01-08 温岭市明华齿轮有限公司 Shaft type gear clamp
CN105500069A (en) * 2016-02-25 2016-04-20 云南国土资源职业学院 Clamping device for bar machining

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202539973U (en) * 2012-03-31 2012-11-21 重庆市旺成科技股份有限公司 Novel assembly clamp for automatically clamping workpiece
CN203380441U (en) * 2013-07-01 2014-01-08 温岭市明华齿轮有限公司 Shaft type gear clamp
CN105500069A (en) * 2016-02-25 2016-04-20 云南国土资源职业学院 Clamping device for bar machining

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