Clamp for gear machining

Abstract

The utility model belongs to the technical field of gear machining, and particularly relates to a clamp for gear machining, which comprises a base, a driving lead screw is rotationally clamped on the base, the driving lead screw is in threaded connection with a lifting block, a stepped sliding groove for slidably installing two sliding blocks is formed on the inner side of the base, and the two sliding blocks are oppositely arranged on the left side and the right side of the lifting block. The lifting block is composed of a trapezoid block and T-shaped blocks formed on the two sides of the trapezoid block, clamping grooves connected with the T-shaped blocks in a sliding mode are formed in the sliding block, a cross-shaped positioning key is installed on the top face of the sliding block, a clamping piece is installed on the outer side of the cross-shaped positioning key in a clamped mode, the clamping piece is connected with the sliding block through a bolt, and the clamping piece is composed of a bottom plate and a V-shaped clamping block. The driving lead screw rotates to drive the lifting block to move, then the two symmetrically-arranged sliding blocks are driven to move at the same speed in the opposite directions, and the clamping piece is driven to move to achieve self-centering clamping of the gear. The clamping piece can be quickly assembled and disassembled on the sliding block, and the cross-shaped positioning key can effectively improve the positioning accuracy of the clamping piece.

Description

Technical Field

[0001] This utility model belongs to the field of gear processing technology, and specifically relates to a fixture for gear processing. Background Technology

[0002] In the advanced fields of precision machinery manufacturing and transmission system design, gear manufacturing and processing technology has reached a high level of maturity. Gear end-face grinding, as a crucial step in the gear manufacturing process, plays a decisive role in ensuring gear precision, surface finish, and overall performance. With the rapid development of the manufacturing industry, the types, specifications, and materials of gears are becoming increasingly diverse, placing ever higher demands on gear end-face grinding fixtures.

[0003] In current technology, three-jaw self-centering chucks are commonly used to clamp gear workpieces. However, with prolonged use, the chuck and jaws of the three-jaw chuck will wear, leading to a decrease in accuracy. When the chuck accuracy decreases while the workpiece requires high accuracy, additional alignment operations may be necessary. The adjustment and maintenance of three-jaw chucks require specific professional knowledge and experience, increasing the processing difficulty and time. Utility Model Content

[0004] To address the above problems, the purpose of this utility model is to provide a fixture for gear processing, which solves the problem that traditional three-jaw self-centering fixtures cannot quickly adjust and maintain the fixture or align the workpiece after the jaws wear.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fixture for gear processing, comprising a base, a drive screw rotatably mounted on the base, a lifting block threadedly connected to the drive screw, a stepped groove for sliding the sliding block formed on the inner side of the base, two sliding blocks arranged opposite each other on the two sides of the lifting block, each lifting block consisting of a trapezoidal block and T-shaped blocks formed on both sides of the trapezoidal block, a locking groove for slidingly connecting the T-shaped block formed on the sliding block, a cross-shaped locating key mounted on the top surface of the sliding block, a clamping member mounted on the outer side of the cross-shaped locating key, the clamping member being bolted to the sliding block, the clamping member consisting of a base plate and a V-shaped clamping block, and a cover plate bolted to the base vertically above the lifting block.

[0006] The beneficial effects of this utility model are as follows: the rotation of the drive screw can drive the lifting block to move, which in turn drives two symmetrically arranged sliding blocks to move in opposite directions at the same speed, thereby driving the clamping component to move and realize the self-centering clamping of the gear; the clamping component can be quickly loaded and unloaded on the sliding block, and the cross positioning key can effectively improve the positioning accuracy of the clamping component.

[0007] To ensure the stability of the drive screw when mounted on the base;

[0008] As a further improvement of the above technical solution: the drive screw is formed with a light rod, the light rod is rotationally clamped on the base, and the bottom end of the drive screw is provided with a rotating handle.

[0009] The improved beneficial effect is that the drive screw can be installed on the base by cold mounting, and the operator holds the rotating handle to stably rotate the drive screw as a whole.

[0010] In order to drive the sliding block to move left and right stably by the lifting of the lifting block;

[0011] As a further improvement of the above technical solution: the trapezoidal block is an isosceles trapezoidal block structure, the sliding block is a right trapezoidal block structure, the T-shaped block is a T-shaped block structure, and the clamping groove is a T-shaped groove structure.

[0012] The improved beneficial effect is that as the lifting block rises and falls, the inclined surface structure in the lifting block pushes the sliding block, so that the sliding block stably slides horizontally under the limiting of the stepped sliding groove.

[0013] In order to effectively prevent the polishing debris from entering the inside of the base;

[0014] As a further improvement of the above technical solution: the cover plate is a channel steel structure, and the bottom plate is slidingly inserted between the two flanges of the cover plate.

[0015] The improved beneficial effect is that the bottom plate can be slidingly inserted on the inside of the cover plate, and cooperates with the cover plate to block the gap formed between the two sliding blocks and the base, so as to prevent the polishing debris above from entering and causing wear of the device.

[0016] In order to effectively improve the smoothness of the device in use;

[0017] As a further improvement of the above technical solution: the side surface of the sliding block is provided with an oil groove, and the side surface of the base is inclined from top to bottom and provided with a stepped sliding groove communicating with the oil groove.

[0018] The improved beneficial effect is that the operator can inject lubricating oil into the oil groove through the stepped sliding groove, so that the oil body infiltrates the contact surface between the base and the sliding block, thereby reducing the friction between the base and the sliding block and improving the durability of the device.

[0019] In order to effectively ensure the stability of the clamping piece installed on the sliding block;

[0020] As a further improvement of the above technical solution: a plurality of stepped holes are formed in the clamping piece, and the clamping piece is threadedly connected to the sliding block by means of a countersunk head bolt.

[0021] The improved beneficial effect is that the plurality of bolts can stably connect the clamping piece with the sliding block, and ensure the stability of the clamping piece clamping the gear.

[0022] The parts not involved in the device are the same as or can be realized by the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a sectional view of the utility model;

[0024] Figure 2 It is a structural schematic view of the utility model;

[0025] Figure 3 It is a sectional view of the base in the utility model;

[0026] Figure 4 It is a structural schematic view of the sliding block in the utility model;

[0027] Figure 5 It is a structural schematic view of the lifting block and the driving piece in the utility model;

[0028] In the drawing: 1, base; 11, stepped sliding groove; 12, oil injection hole; 2, sliding block; 21, cross positioning key; 22, oil groove; 23, clamping groove; 3, lifting block; 31, trapezoidal block; 32, T-shaped block; 4, driving lead screw; 41, polished rod; 42, handle; 5, clamping piece; 51, bottom plate; 52, V-shaped clamping block; 6, cover plate. DETAILED DESCRIPTION

[0029] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0030] Example 1:

[0031] As Figure 1-5 shown: a fixture for gear machining, comprising a base 1, a driving screw 4 is rotatably clamped on the base 1, a lifting block 3 is threadedly connected with the driving screw 4, a stepped sliding groove 11 is formed on the inner side of the base 1 and sliding blocks 2 are slidingly installed, the number of the sliding blocks 2 is two and they are oppositely arranged on the two sides of the lifting block 3, the lifting block 3 is composed of a trapezoidal block 31 and T-shaped blocks 32 formed on the two sides of the trapezoidal block 31, a clamping groove 23 is formed on the sliding block 2 and slidingly connects the T-shaped block 32, a cross positioning key 21 is installed on the top surface of the sliding block 2, a clamping piece 5 is clamped on the outer side of the cross positioning key 21, the clamping piece 5 is connected with the sliding block 2 through bolts, the clamping piece 5 is composed of a bottom plate 51 and a V-shaped clamping block 52, a cover plate 6 is connected with the base 1 vertically above the lifting block 3 through bolts, the driving screw 4 is rotatable to drive the lifting block 3 to move, in turn, to drive the two symmetrically arranged sliding blocks 2 to move at the same speed and in opposite directions, to drive the clamping piece 5 to move and realize self-centering clamping of the gear; the clamping piece 5 can be quickly assembled and disassembled on the sliding block 2, the cross positioning key 21 can effectively improve the positioning accuracy of the clamping piece 5, a light rod 41 is formed on the driving screw 4, the light rod 41 is rotatably clamped on the base 1, a handle 42 is installed on the bottom end of the driving screw 4, the driving screw 4 can be installed on the base 1 through cold mounting, the operator holds the handle 42 to stably rotate the driving screw 4 as a whole, the trapezoidal block 31 is an isosceles trapezoidal block structure, the sliding block 2 is a right trapezoidal block structure, the T-shaped block 32 is a T-shaped block structure, the clamping groove 23 is a T-shaped groove structure, with the lifting of the lifting block 3, the inclined surface structure in the lifting block 3 pushes the sliding block 2 to stably horizontally slide under the limitation of the stepped sliding groove 11, the cover plate 6 is a channel steel type structure, the bottom plate 51 is slidingly inserted between the two flanges of the cover plate 6, the bottom plate 51 can be slidingly inserted on the inner side of the cover plate 6, cooperates with the cover plate 6 to jointly shield the gap formed between the two sliding blocks 2 and the base 1, avoids the polishing debris above from entering to cause abrasion of the device, oil grooves 22 are formed on the side surfaces of the sliding blocks 2, the side surfaces of the base 1 are inclined from top to bottom and are throughly provided with stepped sliding grooves 11 which communicate with the oil grooves 22, the operator can inject lubricating oil into the oil grooves 22 through the stepped sliding grooves 11, in turn, to make the oil body infiltrate the contact surface between the base 1 and the sliding blocks 2, thereby reducing the friction between the base 1 and the sliding blocks 2 and improving the durability of the device, a plurality of stepped holes are formed on the clamping piece 5, the clamping piece 5 is threadedly connected with the sliding block 2 through countersunk head bolts, the plurality of bolts can stably connect the clamping piece 5 with the sliding block 2, to ensure the stability of the clamping piece 5 clamping the gear.

[0032] The working principle of the technical scheme is as follows: the gear workpiece is placed on the cover plate 6, then the handle 42 is rotated to drive the light rod 41 to rotate, so that the screw pair movement between the lifting block 3 and the light rod 41 is generated, the lifting block 3 is driven to move downwards, when the lifting block 3 moves downwards, the T-shaped block 32 is slidably clamped in the clamping groove 23, the inclined surface of the trapezoidal block 31 is slidably attached to the inclined surface of the sliding block 2, the two sliding blocks 2 are driven to move towards each other, and then the V-shaped clamping block 52 in the clamping piece 5 installed at the top end of the sliding block 2 is clamped on the curved side surface of the gear; when it is necessary to replace the worn clamping piece 5, the bolt connecting the clamping piece 5 and the sliding block 2 is unscrewed, then the new clamping piece 5 is quickly positioned on the clamping piece 5 through the cross positioning key 21, and the bolt is used for fastening.

[0033] It should be noted that in this document, the terms "comprise", "comprising", or any other variant thereof are intended to cover non-exclusive inclusions, such that processes, methods, articles, or devices that comprise a list of elements do not only include those elements, but also other elements not explicitly listed, or other elements inherent to such processes, methods, articles, or devices.

[0034] The principles and implementation modes of the present application are described by using specific examples in this document, and the above example is only used to help understand the method of the present application and its core idea. The above description is only the preferred embodiment of the present application. It should be noted that due to the limitation of language expression, there are infinite specific structures objectively, and for ordinary skilled persons in the technical field, some improvements, decorations or changes can be made without departing from the principles of the present application, or the above technical features can be combined in a proper way; these improvements, decorations, changes or combinations, or the direct application of the inventive concept and technical scheme to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A jig for machining a gear, characterized by: The utility model provides a lifting device, including base (1), drive screw rod (4) are rotatably clamped on base (1), drive screw rod (4) are screw connected with lifting block (3), the inside of base (1) is shaped with the ladder slide groove (11) of sliding block (2) installation, the number of sliding block (2) is two and left and right opposite setting lifting block (3) two sides, lifting block (3) is composed of trapezoidal block (31) and the T block (32) of shaping in trapezoidal block (31) both sides, the clamping groove (23) of sliding connection T block (32) is shaped in sliding block (2), the top surface of sliding block (2) is installed with cross locating key (21), the outside of cross locating key (21) is clamped with clamping piece (5), clamping piece (5) is connected sliding block (2) through bolt, clamping piece (5) is composed of bottom plate (51) and V type clamping block (52), the vertical top surface of lifting block (3) is connected with cover plate (6) through bolt on base (1).

2. The jig for machining a gear according to claim 1, characterized by: The utility model discloses a drive screw rod (4) is shaped with light pole (41), light pole (41) rotatable clamping is in base (1), and the bottom of drive screw rod (4) is installed with handle (42).

3. The fixture for machining a gear according to claim 1, wherein: The trapezoidal block (31) is isosceles trapezoidal block structure, the sliding block (2) is right angle trapezoidal block structure, the T block (32) is T block structure, and the clamping groove (23) is T groove structure.

4. The fixture for machining a gear according to claim 1, wherein: The cover plate (6) is channel steel type structure, and the bottom plate (51) is slidably inserted between the two flanges of the cover plate (6).

5. The fixture for machining a gear according to claim 1, wherein: The side surface of the sliding block (2) is provided with an oil groove (22), and the side surface of the base (1) is inclined from top to bottom and is provided with a ladder slide groove (11) in communication with the oil groove (22).

6. The fixture for machining a gear according to claim 1, wherein: A plurality of ladder holes are formed in the clamping piece (5), and the clamping piece (5) is threadedly connected with the sliding block (2) through a countersunk bolt.

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