Fixture for roller skin machining

Abstract

The utility model discloses a clamp for roller skin machining, and relates to the field of machining tools. The device comprises an outer barrel, barrel plugs are arranged on the two sides of the outer barrel in a sealed mode, linear channels are evenly formed in the wall of the outer barrel in the circumferential direction and communicate with the outer barrel, pistons are coaxially arranged on the two sides in the outer barrel, and the pistons move in a reciprocating mode relative to the outer barrel through driving pieces; supporting pads are evenly arranged on the peripheral side of the outer cylinder and are correspondingly matched with the linear channels in number and position, supporting arms are rotationally hinged to the two ends of each supporting pad, and the supporting arms penetrate through the linear channels and are rotationally hinged to the piston. The lifting device has the advantages that after the outer barrel is inserted into the roller skin, the hinged supporting pads are scattered along the outer barrel so as to be synchronously supported on the inner wall of the roller skin, after the outer barrel is coaxially connected to the roller skin, the outer barrel is lifted to a machine tool, the outer barrel can be conveniently clamped and fixed, operation is easy and convenient, and use is flexible and efficient.

Description

Technical Field

[0001] The utility model belongs to a processing tool, relates to a clamp for machining, and specifically relates to a clamp for roller skin machining. Background Art

[0002] The roller skin is a kind of axle mechanical element. When processing the roller skin, its surface needs to be polished or cut. Its outer surface needs to be processed to the appropriate size and made smooth. When using a machine tool to machine its outer surface, it is necessary to use the clamp on the machine tool to clamp and fix the roller skin. When processing small-sized roller skins, the machine tool is simple to clamp it with a three-jaw chuck. However, as the size of the roller skin increases, the difficulty of adjusting the clamping and fixing of the roller skin by the three-jaw chuck increases, which reduces the operating efficiency and easily causes loose clamping. And when processing and fixing the roller skin, it is necessary to ensure the concentricity of the clamping at both ends of the roller skin to avoid jumping when driving the roller skin to rotate and ensure the stability of the roller skin processing. Utility Model Content

[0003] In order to solve the technical problem of inconvenient roller skin clamping and fixing operation, the utility model provides a roller skin processing clamp. After the outer cylinder is inserted into the roller skin, the hinged support pad is diverged along the outer cylinder to synchronously support the inner wall of the roller skin. After it is coaxially connected to the roller skin, the outer cylinder is hoisted to the machine tool to facilitate clamping and fixing. The operation is simple, flexible and efficient.

[0004] The technical solution adopted by the utility model is: to provide a clamp for roller skin processing, including an outer cylinder, both sides of the outer cylinder are sealed with cylinder plugs, the outer cylinder wall is evenly provided with straight channels along the circumferential direction, the straight channels are connected to the outer cylinder, pistons are coaxially provided on both sides of the outer cylinder, and the pistons are relatively reciprocated along the outer cylinder with the help of a driving member; support pads are evenly provided on the circumferential side of the outer cylinder, the number and position of the support pads correspond to the straight channels, and support arms are rotatably hinged at both ends of the support pads, the support arms pass through the straight channels, and are rotatably hinged with the pistons.

[0005] When one end of the outer cylinder passes through the roller skin, the piston is located on both sides of the outer cylinder and pulls the support pad close to the outer cylinder through the support arm to shrink its volume, so that the outer cylinder passes through the roller skin, and then drives the piston to move relatively along the inner wall of the outer cylinder, and pushes the support arm to rotate along the piston to support the support pad to diverge outward, thereby abutting against the inner wall of the roller skin, and as the piston continues to approach, the supporting force of the support pad on the roller skin is increased, thereby improving the firmness of the connection between the outer cylinder and the roller skin through the support arm and the support pad, and after the connection is completed, it is transferred to the machine tool for processing, and the chuck on the machine tool clamps the outer cylinder or the cylinder plug, making the operation simple, efficient and flexible.

[0006] To further optimize the technical solution, the driving member includes a bidirectional screw rod coaxially arranged in the outer cylinder, the two ends of the bidirectional screw rod respectively pass through the barrel plug and are detachably installed with knobs, and the bidirectional screw rod is rotatably installed with the barrel plug with the help of a connecting member; both parts of the outer wall of the bidirectional screw rod are threadedly connected with nuts, and the nuts are respectively coaxially fixed with the piston.

[0007] The knob turns the bidirectional lead screw to rotate along the barrel plug, so that it meshes with the nut and drives the piston to move relatively along the inner wall of the outer barrel. The support arm on the piston passes through the linear channel on the outer barrel to limit the rotation of the piston, making the meshing of the bidirectional lead screw and the nut and driving the piston to move along the linear path in the outer barrel smooth and simple.

[0008] To further optimize the technical solution, the connecting piece includes a mounting hole coaxially arranged on the barrel plug, bearings are installed in the mounting holes, and the bidirectional screw rods are connected to the bearing sleeves; retaining rings are provided on both sides of the bearings, the retaining rings are clamped with the mounting holes, and respectively abut against the end faces on both sides of the bearings.

[0009] The bidirectional screw is installed through bearings and barrel plugs. The bearings make the rotation of the bidirectional screw effortless and reduce its wear. The barrel plug is assembled with the bearing by opening a mounting hole. The retaining ring in the mounting hole constrains the position of the bearing to prevent the bearing from swinging during use, thereby increasing smoothness and safety of use.

[0010] To further optimize the technical solution, the tube plug includes an operating part abutting against the end of the outer tube and a connecting part sealingly plugged into the inner wall of the outer tube, the mounting hole coaxially penetrates the operating part and the connecting part of the tube plug, and anti-slip grooves are provided on the operating part of the tube plug, and the connecting part of the tube plug is fixedly connected to the outer tube by means of a positioning piece.

[0011] The operating part of the barrel plug is provided with anti-slip grooves to facilitate pushing it into the outer barrel and rotating to adjust its position, and the operating part abuts against the end of the outer barrel to avoid excessive insertion of the barrel plug. The connecting part of the barrel plug seals the outer barrel to enhance the protective performance, and the connecting part remembers the positioning piece and is fixedly connected to the outer barrel to avoid interference with the use of the bidirectional screw rod and ensure performance.

[0012] To further optimize the technical solution, the positioning member includes a through hole formed on the side wall of the outer tube and a threaded groove formed on the tube plug connecting portion, a positioning screw is threadedly connected to the through hole, and the positioning screw is threadedly connected to the threaded groove.

[0013] After the connecting part of the plug is plugged into the outer tube, the plug is rotated so that the thread groove on the connecting part coincides with the through hole on the outer tube, and then the screw is threadedly connected with the through hole and the threaded rod to lock and fix the plug. The operation is simple and the use is firm and reliable.

[0014] To further optimize the technical solution, the knob includes sleeves inserted at both ends of the bidirectional screw rod, the sleeves are in contact with the wall of the plug, and the outer walls of the sleeves are fixedly mounted with lifting rings, and connecting rods are inserted in the lifting rings.

[0015] The bidirectional screw rod can be hoisted through the lifting ring, and after the roller skin is clamped and supported, it can be easily transferred. It is easy to use, and after the connecting rod is inserted into the lifting ring, the bidirectional screw rod can be rotated, which is flexible to use.

[0016] To further optimize the technical solution, both side walls of the connecting rod are fixedly sleeved with handles, and two mounting rings are provided between the handles, and the mounting rings are both threadedly connected to the connecting rod.

[0017] The handle makes it more comfortable for the connecting rod to rotate the bidirectional lead screw. After the mounting ring is threadedly connected to the connecting rod and abutted and clamped on the lifting ring, it prevents the connecting rod from moving at will and causing risks in use, thereby improving safety in use. The mounting ring can support the connecting rod on the lifting ring so that one end is longer than the other end, which is flexible to use by rotating the bidirectional lead screw with a lever.

[0018] To further optimize the technical solution, the piston side wall is evenly provided with notches along the circumferential direction, and the support arms are rotatably hinged to the notches.

[0019] The piston is rotatably hinged to the support arm through a channel thereon, and has a simple structure and is stable in use.

[0020] To further optimize the technical solution, an arc-shaped contact surface is provided on the side of the support pad opposite to the support arm.

[0021] The arc-shaped contact surface of the support pad reduces the wear on the roller skin.

[0022] The beneficial effects of the utility model are:

[0023] 1. When the outer cylinder passes through the roller skin, the piston is located on both sides of the outer cylinder to pull the support arms to make the support pads close together and close to the outer cylinder, thereby shrinking the volume of the device, so that the outer cylinder passes through the roller skin smoothly and easily. At the same time, the bidirectional screw drives the piston to move by engaging with the nut. The engagement of the bidirectional screw and the nut has a self-locking effect, which prevents the piston from moving at will and the support pads from opening at will, and is reliable to use;

[0024] 2. Rotate the bidirectional screw rod to mesh with the nut to drive the piston to move along the outer cylinder. The support arm on the piston passes through the linear channel on the outer cylinder to limit the rotation of the piston, so that the bidirectional screw rod drives the piston to move back and forth smoothly along the outer cylinder. As the pistons approach each other, the support arm is pushed to rotate, so that the support pads are synchronously divergent and contact the inner wall of the roller skin, and the contact pressure with the roller skin is gradually increased, so that the outer cylinder is stably and firmly supported. The coaxial divergence of the support pads makes the outer cylinder and the roller skin coaxially distributed, so that the machine tool can fix the roller skin through the outer cylinder, and the operation is labor-saving and simple.

[0025] 3. When rotating the bidirectional screw rod, the connecting rod passes through the lifting ring and is clamped and fixed by the mounting ring to prevent the connecting rod from moving along the lifting ring, making the connecting rod safe to rotate the bidirectional screw rod. The position of the connecting rod on the lifting ring can be adjusted, and the bidirectional screw rod can be rotated by lever, making the rotation more labor-saving. The handles at both ends of the connecting rod improve the comfort of rotation.

[0026] 4. The plugs on both sides of the outer cylinder support the bidirectional screw, and the bearings assembled with the plugs make the rotation of the bidirectional screw more labor-saving and smooth. The retaining rings on both sides of the bearings prevent the bearings from shaking during use, thereby improving the safety and stability of use. At the same time, the plugs are fixed to the outer cylinder by screws to avoid interfering with the rotation of the bidirectional screw and ensure reliability of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of the structure of the roller skin processing fixture of this embodiment;

[0028] Figure 2 This is a schematic diagram of the structure of the roller skin processing fixture of this embodiment;

[0029] Figure 3 Schematic diagram of the cross-sectional structure of the outer cylinder of this embodiment;

[0030] Figure 4 This is a schematic diagram of the structure of the support pad of this embodiment being assembled with the piston through the support arm;

[0031] Figure 5 It is a schematic diagram of the structure of the bidirectional screw rod, the piston and the barrel plug assembled in this embodiment;

[0032] Figure 6 This is a schematic diagram of the use structure of the connecting rod and the mounting ring of this embodiment;

[0033] Figure 7 Schematic diagram of the disassembled structure of the outer tube and the tube plug of this embodiment.

[0034] In the figure, 1, outer cylinder; 101, linear channel; 102, through hole; 103, positioning screw; 2, barrel plug; 201, mounting hole; 202, bearing; 203, retaining ring; 204, operating part; 205, connecting part; 2051, threaded groove; 3, piston; 301, notch; 4, support pad; 401, support arm; 402, contact surface; 5, two-way screw rod; 501, knob; 5011, sleeve; 5012, lifting ring; 5013, connecting rod; 5014, handle; 5015, mounting ring; 502, nut. DETAILED DESCRIPTION

[0035] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0036] Please see attached Figure 1 , Attachment Figure 3 , Attachment Figure 5 , Attachment Figure 7 A roller skin processing fixture comprises an outer cylinder 1, both sides of the outer cylinder 1 are sealed with barrel plugs 2, both sides of the outer cylinder 1 are coaxially provided with pistons 3, the pistons 3 are relatively reciprocated along the outer cylinder 1 with the help of a driving member, the driving member comprises a bidirectional screw rod 5 coaxially arranged in the outer cylinder 1, both ends of the bidirectional screw rod 5 respectively pass through the barrel plug 2, and are rotatably installed with the barrel plug 2 with the help of a connecting member, the connecting member comprises a mounting hole 201 coaxially arranged on the barrel plug 2, the mounting hole 201 is sleeved with a bearing 202, both ends of the bidirectional screw rod 5 are sleeved with the bearing 202, the bearing 202 makes the rotation of the bidirectional screw rod 5 effortless, and retaining rings 203 are respectively arranged on both sides of the bearing 202, the retaining rings 203 are clamped with the mounting hole 201, and respectively abut against the end faces on both sides of the bearing 202, the retaining rings 203 prevent the bearing 202 from swinging during operation, and improve the stability and safety of the use of the bearing 202;

[0037] Please see attached Figure 3 , Attachment Figure 5 , Attachment Figure 7 The plug 2 includes an operating portion 204 abutting against the end of the outer tube 1 and a connecting portion 205 sealingly plugged with the inner wall of the outer tube 1. The mounting hole 201 of the assembled bearing 202 coaxially penetrates the operating portion 204 and the connecting portion 205 of the plug 2. The operating portion 204 of the plug 2 is provided with anti-slip grooves, which is convenient for rotating the plug 2 and saves effort. The connecting portion 205 of the plug 2 is fixedly connected to the outer tube 1 by means of a positioning member. The positioning member includes a through hole 102 provided on the side wall of the outer tube 1 and a threaded groove 2051 provided on the connecting portion 205 of the plug 2. The through hole 102 is internally threadedly connected with a positioning screw 103, and after the through hole 102 and the threaded groove 2051 overlap, the positioning screw 103 is threadedly connected with the threaded groove 2051, so as to constrain the position of the plug 2 and avoid interfering with the rotation of the bidirectional screw rod 5, which is reliable to use.

[0038] Please see attached Figure 3-5 And attached Figure 7 , both parts of the outer wall of the bidirectional screw rod 5 are threadedly connected with a nut 502, and the nut 502 is respectively coaxially fixed with the piston 3. The side wall of the outer cylinder 1 is evenly provided with a linear channel 101 along the circumferential direction, and the linear channel 101 is connected to the outer cylinder 1, and the outer cylinder 1 is evenly provided with a support pad 4 on the circumferential side, and the position and number of the support pad 4 correspond to the linear channel 101. Both ends of the support pad 4 are rotatably hinged with a support arm 401, and the support arm 401 passes through the linear channel 101 and is rotatably hinged with the piston 3. Notches 301 are evenly provided on the side wall of the piston 3 along the circumferential direction, and the support arm 401 is rotatably hinged with the notch 301. The movement of the support arm 401 and the linear channel 101 is set to constrain the piston 3. When the screw rod rotates, it engages with the nut 502 to drive the piston 3 to reciprocate linearly along the outer cylinder 1;

[0039] Please see attached Figure 2 , Attachment Figure 3 , Attachment Figure 5 , Attachment Figure 6 The two ends of the two-way screw rod 5 passing through the barrel plug 2 are detachably equipped with knobs 501. The knob 501 includes a sleeve 5011 plugged into the two ends of the two-way screw rod 5. The sleeve 5011 abuts against the wall of the barrel plug 2. Splines are provided at both ends of the two-way screw rod 5, or a polygonal connecting block is provided. After the sleeve 5011 is plugged into the two-way screw rod 5, the sleeve 5011 is limited to rotate. The outer wall of the sleeve 5011 is fixedly installed with a lifting ring 5012. The lifting ring 5012 is convenient for lifting the outer cylinder 1 and the supporting roller skin, and is flexible to use. A connecting rod 5013 is plugged into the lifting ring 5012. The connecting rod 5013 saves effort in rotating the two-way screw rod 5. The two side walls of the connecting rod 5013 are fixedly sleeved with a handle 5014 The handle 5014 makes the rotation of the connecting rod 5013 comfortable, and two mounting rings 5015 are arranged between the handles 5014. The mounting rings 5015 are threadedly connected with the connecting rod 5013. The connecting rod 5013 is a structure that is thick in the middle and thin on both sides. After the handle 5014 is mounted on both ends of the connecting rod 5013, it is prevented from protruding from the side wall of the connecting rod 5013, and does not interfere with the installation of the mounting rings 5015. The two connecting rings clamp the lifting ring 5012 to prevent the connecting rod 5013 from moving randomly on the lifting ring 5012, so that the connecting rod 5013 can rotate the two-way screw rod 5 safely, and it is convenient to adjust the position of the connecting rod 5013 on the lifting ring 5012. The two-way screw rod 5 is rotated by a lever, which is flexible to use.

[0040] The working principle of the roller skin processing fixture is as follows: when the outer cylinder 1 passes through the roller skin, the pistons 3 are respectively located at the two ends of the outer cylinder 1, so that the support arms 401 pull the support pads 4 close to the outer cylinder 1, so that the support pads 4 are gathered and their volume is shrunk, so that the outer cylinder 1 smoothly passes through the roller skin, and then the connecting rod 5013 is taken to pass through the ring 5012 of the two-way screw rod 5, and the mounting ring 5015 is connected to abut against the ring 5012 to constrain the position of the connecting rod 5013, and then the two-way screw rod 5 is rotated with the help of the connecting rod 5013 to engage with the nut 502 to drive the piston 3 to move along the inner wall of the outer cylinder 1. Since the support arms 401 on the piston 3 pass through the linear channel 101 on the outer cylinder 1, the movable The rotation of the plug 3 ensures the smooth movement of the piston 3 driven by the meshing of the bidirectional screw rod 5 and the screw nut 502. When the piston 3 moves relatively along the inner wall of the outer cylinder 1, the support arm 401 is pushed to rotate along the piston 3, so that the support pad 4 is dispersed, the interval with the outer cylinder 1 is gradually enlarged, and gradually abuts against the inner wall of the roller skin, because the support arm 401 pushes the support pad 4 to diverge synchronously, so that the support pad 4 is synchronously in contact with the inner wall of the roller skin, so as to support the coaxial arrangement of the outer cylinder 1 and the roller skin, and the outer wall of the support pad 4 is provided with an arc-shaped contact surface 402, which increases the contact surface 402 area with the roller skin and reduces contact wear. As the bidirectional screw rod 5 adjusts the interval of the piston 3 closer, the abutment of the support pad 4 with the roller skin is more firm, and the use is reliable;

[0041] After the outer cylinder 1 is positioned in the roller skin by the support arm 401 and the support pad 4, the roller skin is hoisted by the lifting ring 5012 on the bidirectional screw 5. When the roller skin is processed by a machine tool, the chuck on the machine tool clamps and fixes the outer cylinder 1 or the barrel plugs 2 at both ends of the outer cylinder 1. The diameter of the barrel plugs 2 is much smaller than the diameter of the roller skin, which makes the operation simple, improves the flexibility of use and ensures the efficiency of use.

Claims

1. A roller skin processing fixture, characterized in that: The invention comprises an outer cylinder (1), both sides of the outer cylinder (1) are sealed with cylinder plugs (2), the wall of the outer cylinder (1) is evenly provided with linear channels (101) along the circumferential direction, the linear channels (101) are connected to the outer cylinder (1), pistons (3) are coaxially provided on both sides of the inner wall of the outer cylinder (1), and the pistons (3) are reciprocated along the outer cylinder (1) with the aid of a driving member; support pads (4) are evenly provided on the circumferential side of the outer cylinder (1), the number and position of the support pads (4) correspond to those of the linear channels (101), and both ends of the support pads (4) are rotatably hinged with support arms (401), the support arms (401) pass through the linear channels (101) and are rotatably hinged with the pistons (3).

2. A roller skin processing fixture according to claim 1, characterized in that: The driving member comprises a bidirectional screw rod (5) coaxially arranged in the outer cylinder (1), the two ends of the bidirectional screw rod (5) respectively pass through the cylinder plug (2) and are detachably mounted with knobs (501), and the bidirectional screw rod (5) is rotatably mounted with the cylinder plug (2) by means of a connecting member; the two outer walls of the bidirectional screw rod (5) are both threadedly connected with nuts (502), and the nuts (502) are respectively coaxially fixedly mounted with the piston (3).

3. A roller skin processing fixture according to claim 2, characterized in that: The connecting member comprises a mounting hole (201) coaxially arranged on the barrel plug (2), a bearing (202) being sleeved in each mounting hole (201), and the bidirectional screw rod (5) being sleeved with the bearing (202); retaining rings (203) are respectively arranged on both sides of the bearing (202), the retaining rings (203) are clamped with the mounting hole (201), and respectively abut against the end faces on both sides of the bearing (202).

4. A roller skin processing fixture according to claim 3, characterized in that: The barrel plug (2) comprises an operating portion (204) abutting against the end of the outer barrel (1) and a connecting portion (205) sealingly plugged with the inner wall of the outer barrel (1); the mounting hole (201) coaxially penetrates the operating portion (204) and the connecting portion (205) of the barrel plug (2); the operating portion (204) of the barrel plug (2) is provided with anti-slip grooves; and the connecting portion (205) of the barrel plug (2) is fixedly connected to the outer barrel (1) by means of a positioning member.

5. A roller skin processing fixture according to claim 4, characterized in that: The positioning member comprises a through hole (102) formed on the side wall of the outer tube (1) and a threaded groove (2051) formed on the connecting portion (205) of the tube plug (2); a positioning screw (103) is threadedly connected to the through hole (102), and the positioning screw (103) is threadedly connected to the threaded groove (2051).

6. A roller skin processing fixture according to claim 2, characterized in that: The knob (501) comprises sleeves (5011) inserted at both ends of the bidirectional screw rod (5), the sleeves (5011) are in contact with the wall of the barrel plug (2), and the outer wall of the sleeve (5011) is fixedly mounted with a lifting ring (5012), and a connecting rod (5013) is inserted in the lifting ring (5012).

7. A roller skin processing fixture according to claim 6, characterized in that: The two side walls of the connecting rod (5013) are both fixedly sleeved with a handle (5014), and two mounting rings (5015) are arranged between the handles (5014), and the mounting rings (5015) are both threadedly connected to the connecting rod (5013).

8. The roller skin processing fixture according to claim 1, characterized in that: The side wall of the piston (3) is evenly provided with notches (301) along the circumferential direction, and the support arms (401) are rotatably hinged to the notches (301).

9. The roller skin processing fixture according to claim 1, characterized in that: An arc-shaped contact surface (402) is provided on the side of the support pad (4) opposite to the support arm (401).

Images