Rust removal rotary clamp for thin-wall circular ring workpiece

Abstract

The utility model discloses a thin-wall circular ring workpiece derusting rotary clamp, which comprises a base and two groups of retainers, the two groups of retainers are transversely and symmetrically arranged on the top side of the base, a pressure-bearing roller and a movable roller which are distributed in parallel are rotatably arranged on the inner sides of the retainers, the movable roller is arranged above the pressure-bearing roller, and the movable roller is arranged above the pressure-bearing roller. A motor for driving the movable roller to rotate is fixed on the outer side of the retainer; a sliding groove longitudinally penetrates through the middle of the retainer. The clamping device has the advantages that the two sets of rotatable retainers are arranged to support the pressure-bearing roller and the movable roller, the inclination angle of the retainers is adjusted through the two sets of connecting rods, it is ensured that the axis connecting line of the pressure-bearing roller and the movable roller can be kept perpendicular to the tangent line of the outer circumference of an annular workpiece, clamping and positioning of workpieces of different sizes can be achieved, and the clamping precision is improved. And the problem of workpiece clamping deformation is solved, the product quality is improved, and use is more convenient.

Description

Technical Field

[0001] The utility model relates to the field of machining, in particular to a rust-removing rotating clamp for a thin-walled circular ring workpiece. Background Art

[0002] Thin-walled annular workpieces have thin outer circumferential walls and high dimensional accuracy requirements. When clamped using traditional axially positioned claw chucks during processing, the parts are easily deformed under the action of the radial clamping force, especially during the rust removal and polishing of the inner and outer walls. Due to the large size and thin walls of the annular workpiece, the workpiece is prone to high temperature, which causes thermal deformation under the support of the fixture that is tightened outward or clamped inward, resulting in roundness error and affecting the processing quality of the annular workpiece. Utility Model Content

[0003] The purpose of the utility model is to provide a rust removal rotating clamp for thin-walled circular ring workpieces in order to solve the above-mentioned problems. By setting two sets of rotatable retaining frames to support pressure rollers and movable rollers, it is possible to achieve clamping and positioning of workpieces of different sizes, solve the problem of deformation of circular ring workpieces during clamping, and improve product quality. See the following description for details.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides a rust-removing rotating fixture for thin-walled circular ring workpieces, comprising a base and two sets of retaining frames, the two sets of retaining frames are symmetrically arranged on the top side of the base, a pressure roller and a movable roller are rotatably arranged inside the retaining frames in parallel, the movable roller is arranged above the pressure roller, and a motor driving the movable roller to rotate is fixed outside the retaining frames;

[0006] A slide groove is longitudinally penetrated through the middle of the retaining frame, and a slider is slidably arranged inside the slide groove along its length direction to support the rotation of the movable roller. A slide rod passing through the retaining frame is fixed on the top side of the slider, and the slide rod is loosely matched with the retaining frame, and a spring is sleeved on the outside of the slide rod inside the slide groove to keep the movable roller pressed against the pressure roller.

[0007] The rust removal rotating clamp for thin-walled circular workpieces mentioned above is used. When in use, the handle is pulled upward to drive the slide bar and the slider to move upward, and the movable roller is supported to move upward by the slider to separate the pressure roller, and the annular workpiece is placed between the movable roller and the pressure roller, and the slider is pushed by the spring to press the movable roller to the inner wall of the annular workpiece, and the annular workpiece is supported and pressed by the movable roller and the pressure roller, and then the knob is rotated to drive the screw to rotate, and the external threads at both ends of the screw are used to drive the two sets of guide blocks to slide in the opposite direction, and the connecting rod is supported by the guide block to push the retaining frame to rotate, and the retaining frame is supported to rotate by the rotating seat, thereby changing the position of the pressure roller and the movable roller, ensuring that the axis connection line of the pressure roller and the movable roller can be in the same straight line position with the axis of the annular workpiece, so as to ensure The movable roller and the pressure roller can clamp the inner and outer sides of the annular workpiece; the pressure roller is driven by a motor to support the annular workpiece to rotate, so that the grinding tool is placed on the inner and outer sides of the annular workpiece for alignment and grinding and rust removal. The rotating joint of the outer shaft tube of the movable roller is pre-connected to the external exhaust and dust removal pipeline, and the rotation of the annular workpiece drives the movable roller to rotate. The pressure plate on the outer circumference side of the movable roller contacts the inner wall of the annular workpiece and is squeezed, so that the compression spring is compressed through the pressure plate, and at the same time, the support rod supports the sealing plate to move toward the inner side of the movable roller to realize the corresponding opening action of the exhaust hole, so as to ensure that the exhaust hole on the side where the movable roller rotates to contact the annular workpiece is automatically opened, and the exhaust hole on the side away from the annular workpiece is automatically closed by the sealing plate, so as to ensure the exhaust and dust removal effect close to the annular workpiece.

[0008] Preferably, a handle is fixed to the top of the slide rod, and limiting rings extending to the outside of the end of the movable roller are coaxially fixed to both ends of the pressure roller.

[0009] Preferably, the movable roller is a hollow cylinder, the front end of the movable roller is connected to a shaft tube passing through the slider, a bearing supporting the shaft tube to rotate is arranged in the middle of the slider, and a rotary joint is fixed to the outer end of the shaft tube.

[0010] Preferably, a plurality of groove-shaped receiving grooves are arranged around the outer circumference of the movable roller, a plurality of exhaust holes penetrating the side wall of the movable roller are arranged inside the receiving groove along its length direction, and positioning holes are penetrated through the bottom of the receiving groove on both sides outside the exhaust holes.

[0011] Preferably, a plurality of sealing plates are arranged inside the movable roller corresponding to the exhaust holes, two support rods passing through the positioning holes are fixed on the outside of the sealing plates, the support rods are gap-matched with the positioning holes, and a pressure plate extending out of the accommodating groove is fixed on the outer end of the support rod, and a compression spring is sleeved on the outside of the support rod to keep the sealing plate tightly against the exhaust hole.

[0012] Preferably, the retaining frame is an L-shaped bent plate structure, two groups of rotating seats are laterally arranged on the top side of the base, and a rotating ear that rotatably cooperates with the rotating seat is fixed to the bottom side of the retaining frame. Mounting holes are vertically penetrated at the four corners of the base, and a laterally extending guide groove is vertically penetrated in the middle of the base.

[0013] Preferably, a screw rod is passed through the middle of the base transversely, and two groups of connecting rods supporting the retaining frame are arranged on the top side of the base. The bottom end of the connecting rod is hinged with a guide block that slides transversely and cooperates with the guide groove.

[0014] Preferably, two groups of external threads with opposite rotation directions are provided at both ends of the screw rod inside the guide groove, the screw rod passes through the two groups of guide blocks in sequence, and the screw rod is respectively matched with the two groups of guide block threads through the two groups of external threads, and knobs are fixed at both ends of the screw rod.

[0015] The beneficial effect is that: the utility model provides two groups of rotatable retainers to support the pressure roller and the movable roller, and uses two groups of connecting rods to adjust the inclination angle of the retainer, so as to ensure that the axis connecting line of the pressure roller and the movable roller can be perpendicular to the outer circumference tangent of the annular workpiece, so as to realize the clamping and positioning of workpieces of different sizes, solve the problem of workpiece clamping deformation, and improve product quality;

[0016] In addition, multiple groups of compressible and retractable pressure plates are arranged on the outer circumference of the movable roller. The pressure plates are used to push the sealing plates to release the closed state of the exhaust holes. This can ensure that the outer circumference of the movable roller that contacts the inner wall of the workpiece automatically opens the corresponding exhaust holes, thereby automatically extracting the dust generated during the rust removal and grinding process, making it more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 It is the main structural diagram of the utility model;

[0019] Figure 2 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 3 It is a schematic diagram of the structural disassembly of the utility model;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of the cage of the utility model;

[0022] Figure 5This is a schematic diagram of the structure disassembly of the movable roller of the utility model;

[0023] Figure 6 It is a top view structural diagram of the utility model;

[0024] Figure 7 It is a structural schematic diagram of the utility model in use state.

[0025] The following are the descriptions of the reference numerals:

[0026] 1. Base; 101. Rotating seat; 102. Mounting hole; 103. Guide groove; 2. Cage; 201. Slide groove; 202. Slide rod; 203. Slider; 204. Spring; 205. Handle; 206. Adjustment ear; 207. Rotating ear; 3. Pressure roller; 301. Limiting ring; 4. Movable roller; 401. Shaft tube; 402. Rotating joint; 403. Receiving groove; 404. Exhaust hole; 405. Positioning hole; 406. Closing plate; 407. Support rod; 408. Pressure plate; 409. Compression spring; 5. Motor; 6. Connecting rod; 601. Guide block; 7. Screw; 701. External thread; 702. Knob; 8. Annular workpiece. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0028] See also Figure 1-Figure 7 As shown, the utility model provides a rust removal rotating fixture for thin-walled circular workpieces, comprising a base 1 and two sets of retainers 2, the two sets of retainers 2 are symmetrically arranged on the top side of the base 1, and the inner side of the retainers 2 is rotatably provided with parallel pressure rollers 3 and movable rollers 4, the movable rollers 4 are arranged above the pressure rollers 3, the pressure rollers 3 and the movable rollers 4 cooperate to form a rotating fixture supporting an annular workpiece 8, and the outer side of the retainers 2 is fixed with a motor 5 for driving the movable rollers 4 to rotate;

[0029] A slide groove 201 is longitudinally penetrated through the middle of the retaining frame 2, and a slider 203 is slidably arranged inside the slide groove 201 along its length direction to support the rotation of the movable roller 4. A slide rod 202 that passes through the retaining frame 2 is fixed on the top side of the slider 203. The slide rod 202 is clearance-matched with the retaining frame 2, and the slide rod 202 on the inner side of the slide groove 201 is sleeved on the outside with a spring 204 that keeps the movable roller 4 pressed against the pressure roller 3, ensuring that the pressure roller 3 and the movable roller 4 can keep the annular workpiece 8 clamped and pressed tightly.

[0030] As an optional implementation, a handle 205 is fixed to the top of the slide bar 202, and both ends of the pressure roller 3 are coaxially fixed with a limit ring 301 extending to the outside of the end of the movable roller 4. The movable roller 4 is a hollow cylinder, and the front end of the movable roller 4 is connected to a shaft tube 401 passing through the slider 203. The middle of the slider 203 is provided with a bearing supporting the rotation of the shaft tube 401. A rotary joint 402 is fixed to the outer end of the shaft tube 401, so that the rotary joint 402 can be connected to an external exhaust dust removal pipeline, so that the smoke generated during the grinding of the circular workpiece can be extracted and removed by the movable roller 4, thereby improving the air pollution problem during the grinding process;

[0031] A plurality of groove-shaped receiving grooves 403 are arranged around the outer circumference of the movable roller 4, and a plurality of exhaust holes 404 are arranged inside the receiving grooves 403 along the length direction thereof, and penetrate the side wall of the movable roller 4. Positioning holes 405 are penetrated through the bottom of the receiving grooves 403 on both sides outside the exhaust holes 404, and a plurality of sealing plates 406 are arranged inside the movable roller 4 corresponding to the exhaust holes 404. Two support rods 407 passing through the positioning holes 405 are fixed on the outside of the sealing plates 406, and the support rods 407 are connected to the positioning holes 405. 5 clearance fit, and a pressing plate 408 extending out of the receiving groove 403 is fixed to the outer end of the support rod 407, and a compression spring 409 is sleeved on the outer side of the support rod 407 to keep the sealing plate 406 against the closed exhaust hole 404. When the movable roller 4 rotates until the pressing plate 408 contacts the inner wall of the circular workpiece, the pressing plate 408 can be pushed into the receiving groove 403 through the circular workpiece, and then the sealing plate 406 is pushed away from the exhaust hole 404, so that the exhaust hole 404 at the corresponding position is opened to realize exhaust and dust removal;

[0032] The holder 2 is an L-shaped bent plate structure, two sets of rotating seats 101 are transversely arranged on the top side of the base 1, and a rotating ear 207 that rotates and cooperates with the rotating seat 101 is fixed on the bottom side of the holder 2. The four corners of the base 1 are vertically penetrated by mounting holes 102, and the middle of the base 1 is vertically penetrated by a guide groove 103 extending transversely;

[0033] A screw rod 7 is passed through the middle of the base 1 transversely, and the screw rod 7 is rotatably matched with the base 1 through a bearing. Two groups of connecting rods 6 supporting the retaining frame 2 are arranged on the top side of the base 1. The bottom end of the connecting rod 6 is hinged with a guide block 601 that slides transversely and matches the guide groove 103. Two groups of external threads 701 with opposite rotation directions are arranged at both ends of the screw rod 7 inside the guide groove 103. The screw rod 7 passes through the two groups of guide blocks 601 in sequence, and the screw rod 7 is threadedly matched with the two groups of guide blocks 601 through the two groups of external threads 701, so that the two groups of guide blocks 601 can be driven to slide in the opposite direction by rotating the screw rod 7, thereby realizing the support and adjustment of the angular position of the retaining frame 2 by the two groups of connecting rods 6. Knobs 702 are fixed at both ends of the screw rod 7.

[0034] With the above structure, when in use, the handle 205 is pulled upward to drive the slide bar 202 and the slider 203 to move upward, and the slider 203 is used to support the movable roller 4 to move upward to separate the pressure roller 3, and the annular workpiece 8 is placed between the movable roller 4 and the pressure roller 3, and the slider 203 is pushed by the spring 204 to press the movable roller 4 to the inner wall of the annular workpiece 8, and the annular workpiece 8 is supported and pressed by the movable roller 4 and the pressure roller 3, and then the knob 702 is rotated to drive the screw 7 to rotate, and the external threads 701 at both ends of the screw 7 are used to drive the two groups of guide blocks 601 to slide in the opposite direction, and the guide blocks 601 are used to support the connecting rod 6 to push the retaining frame 2 to rotate, and the rotating seat 101 is used to support the retaining frame 2 to rotate, thereby changing the position of the pressure roller 3 and the movable roller 4, ensuring that the axis connecting line of the pressure roller 3 and the movable roller 4 can be in the same straight line position with the axis of the annular workpiece 8, so as to ensure that the movable roller 4 and The pressure roller 3 can clamp the inner and outer sides of the annular workpiece 8; the pressure roller 3 is driven by the motor 5 to support the annular workpiece 8 to rotate, so that the grinding tool is placed on the inner and outer sides of the annular workpiece 8 for alignment and grinding and rust removal. The rotary joint 402 of the outer shaft tube 401 of the movable roller 4 is pre-connected to the external exhaust dust removal pipeline, and the annular workpiece 8 is rotated to drive the movable roller 4 to rotate. The pressure plate 408 on the outer circumferential side of the movable roller 4 contacts the inner wall of the annular workpiece 8 and is squeezed, so that the compression spring 409 is compressed by the pressure plate 408, and at the same time, the support rod 407 supports the sealing plate 406 to move toward the inner side of the movable roller 4 to realize the corresponding opening action of the exhaust hole 404, so as to ensure that the exhaust hole 404 on the side of the movable roller 4 that contacts the annular workpiece 8 is automatically opened, and the exhaust hole 404 on the side that rotates away from the annular workpiece 8 is automatically closed by the sealing plate 406, so as to ensure the exhaust dust removal effect close to the annular workpiece 8.

[0035] By arranging two groups of rotatable retainers 2 to support the pressure roller 3 and the movable roller 4, and using two groups of connecting rods 6 to adjust the inclination angle of the retainer 2, it is ensured that the axis connecting line of the pressure roller 3 and the movable roller 4 can be kept perpendicular to the outer circumferential tangent of the annular workpiece 8, so as to realize the clamping and positioning of workpieces of different sizes, solve the problem of workpiece clamping deformation, and improve product quality;

[0036] In addition, a plurality of compressible and retractable pressure plates 408 are arranged on the outer circumference of the movable roller 4. The pressure plates 408 are used to push the sealing plates 406 to release the closed state of the exhaust holes 404. This can ensure that the outer circumference of the movable roller 4 that contacts the inner wall of the workpiece automatically opens the corresponding exhaust holes 404, thereby automatically extracting the dust generated during the rust removal and grinding process, making it more convenient to use.

[0037] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A rust-removing rotary fixture for thin-walled circular workpieces, characterized in that: It comprises a base (1) and two groups of retaining frames (2), the two groups of retaining frames (2) being laterally symmetrically arranged on the top side of the base (1), the inner side of the retaining frames (2) being rotatably provided with pressure rollers (3) and movable rollers (4) distributed in parallel, the movable rollers (4) being arranged above the pressure rollers (3), and the outer side of the retaining frames (2) being fixed with motors (5) for driving the movable rollers (4) to rotate; A slide groove (201) is longitudinally penetrated through the middle of the retaining frame (2), and a slider (203) is slidably arranged inside the slide groove (201) along its length direction to support the rotation of the movable roller (4). A slide rod (202) passing through the retaining frame (2) is fixed on the top side of the slider (203), and the slide rod (202) is clearance-matched with the retaining frame (2), and a spring (204) is sleeved on the outside of the slide rod (202) inside the slide groove (201) to keep the movable roller (4) pressed against the pressure roller (3).

2. A rust removal rotary fixture for thin-walled circular workpieces according to claim 1, characterized in that: A handle (205) is fixed to the top of the slide bar (202), and limiting rings (301) extending to the outside of the end of the movable roller (4) are coaxially fixed to both ends of the pressure roller (3).

3. A rust removal rotary fixture for thin-walled circular workpieces according to claim 2, characterized in that: The movable roller (4) is a hollow cylinder. The front end of the movable roller (4) is connected to a shaft tube (401) passing through the slider (203). A bearing supporting the rotation of the shaft tube (401) is arranged in the middle of the slider (203). A rotary joint (402) is fixed to the outer end of the shaft tube (401).

4. A rust-removing rotary fixture for thin-walled circular workpieces according to claim 3, characterized in that: The outer circumference of the movable roller (4) is surrounded by a plurality of groove-shaped receiving grooves (403), and the interior of the receiving groove (403) is provided with a plurality of exhaust holes (404) penetrating the side wall of the movable roller (4) along its length direction, and the bottom of the receiving groove (403) on both sides outside the exhaust holes (404) is penetrated by positioning holes (405).

5. A rust-removing rotary fixture for thin-walled circular workpieces according to claim 4, characterized in that: A plurality of sealing plates (406) are arranged inside the movable roller (4) corresponding to the exhaust hole (404), and two support rods (407) passing through the positioning hole (405) are fixed on the outside of the sealing plate (406), and the support rods (407) are loosely matched with the positioning hole (405), and a pressure plate (408) extending out of the accommodating groove (403) is fixed to the outer end of the support rod (407), and a compression spring (409) is sleeved on the outside of the support rod (407) to keep the sealing plate (406) pressed against the exhaust hole (404) to close it.

6. The rust removal rotary fixture for thin-walled circular workpiece according to claim 1, characterized in that: The retaining frame (2) is an L-shaped bent plate structure, two groups of rotating seats (101) are transversely arranged on the top side of the base (1), and rotating ears (207) that rotate to match the rotating seats (101) are fixed on the bottom side of the retaining frame (2), and mounting holes (102) are vertically penetrated at the four corners of the base (1), and a guide groove (103) extending transversely is vertically penetrated in the middle of the base (1).

7. A rust-removing rotary fixture for thin-walled circular workpieces according to claim 6, characterized in that: A screw rod (7) is passed through the middle of the base (1) transversely, and two groups of connecting rods (6) supporting the retaining frame (2) are arranged on the top side of the base (1). The bottom end of the connecting rod (6) is hinged with a guide block (601) that slides transversely and cooperates with the guide groove (103).

8. The rust removal rotary fixture for thin-walled circular workpiece according to claim 7, characterized in that: Two groups of external threads (701) with opposite rotation directions are arranged at both ends of the screw rod (7) inside the guide groove (103); the screw rod (7) passes through the two groups of guide blocks (601) in sequence, and the screw rod (7) is respectively threadably matched with the two groups of guide blocks (601) through the two groups of external threads (701); knobs (702) are fixed at both ends of the screw rod (7).

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