A ring-shaped workpiece clamp

Abstract

This utility model relates to a ring-shaped workpiece fixture, comprising a worktable, a clamping member for holding the inner wall of the workpiece, a clamping member for pressing the workpiece firmly onto the worktable, a moving device for synchronously moving the clamping member, and a check member to prevent the clamping member from loosening during processing. A first groove is formed on the worktable; several grooves are arranged in a circumferential array; the clamping member slides along the first groove, and the number of grooves corresponds to the number of clamping members; the clamping member is disposed on the clamping member; the moving device is disposed at the bottom of the worktable; the working end of the moving device is connected to the clamping member; the check member is disposed at the bottom of the worktable, and its working end is connected to the moving device. This design solves the problem that the processing steps of the workpiece also change with the processing method. When processing ring-shaped workpieces, clamping is required, but existing fixtures are not convenient for clamping and fixing ring-shaped workpieces of different sizes.

Description

Technical Field

[0001] This utility model relates to the field of fixtures, and in particular to a ring-shaped workpiece fixture. Background Technology

[0002] In existing technologies, a workpiece refers to the object being machined during the machining process. It can be a single part or a combination of several parts fixed together. There are various machining methods for workpieces, including turning, milling, planing, grinding, casting, forging, etc. The machining steps also vary depending on the machining method. When machining a ring-shaped workpiece, it needs to be clamped; however, existing fixtures are not convenient for clamping and fixing ring-shaped workpieces of different sizes. Therefore, we propose a milling fixture for machining ring-shaped workpieces. Utility Model Content

[0003] This application provides a ring-shaped workpiece fixture, which solves the problem that the processing steps of the workpiece in the prior art also change with the processing method. When processing a ring-shaped workpiece, it is necessary to clamp it, but existing fixtures are not convenient for clamping and fixing ring-shaped workpieces of different sizes.

[0004] The technical solutions adopted in the embodiments of this application are as follows.

[0005] A ring-shaped workpiece fixture includes a worktable, a clamping member for holding the inner wall of a workpiece, a clamping member for pressing the workpiece against the worktable, a moving device for synchronously moving the clamping member, and a check member for preventing the clamping member from loosening during processing. The worktable has a first groove; several grooves are arranged in a circumferential array; the clamping member slides along the first groove, and the number of grooves corresponds to the number of clamping members; the clamping member is disposed on the clamping member; the moving device is disposed at the bottom of the worktable; the working end of the moving device is connected to the clamping member; the check member is disposed at the bottom of the worktable, and its working end is connected to the moving device.

[0006] As a further improvement to the above technical solution: a guide rod is provided in the first groove; the guide rod passes through the clamping member.

[0007] As a further improvement to the above technical solution: the clamping member includes a pressure block, a first rod guiding the pressure block, an elastic member that ensures the pressure block always presses against the workpiece, and a fixing member that fixes the position of the pressure block; the clamping member has a second groove; the first rod is disposed in the second groove; the pressure block slides in the second groove and the first rod passes through the pressure block; the elastic member is sleeved on the first rod and one end of the elastic member is fixed on the second groove, and the other end of the elastic member is fixed on the pressure block; a third groove is formed on the side wall of the second groove; the fixing member is located in the third groove and the fixing member is threaded through the pressure block.

[0008] As a further improvement to the above technical solution: the pressure block is provided with an inclined surface; the inclined surface faces the lower outer side of the worktable; when the workpiece contacts the inclined surface, the elastic element is stretched until the inclined surface abuts against the top of the workpiece, at which time the position of the fixing element is fixed so that the pressure block always presses against the surface of the workpiece.

[0009] As a further improvement to the above technical solution: the moving device includes a rotating rod, a sliding block sliding on the rotating rod, and a second rod that drives the clamping member to move; the rotating rod rotates at the middle of the worktable; the sliding block is threadedly connected to the rotating rod; one end of the second rod is hinged to the sliding block, and the other end of the second rod is hinged to the clamping member; when the rotating rod rotates, the sliding block does not rotate and moves up and down, and the second rod pushes the clamping member to move.

[0010] As a further improvement to the above technical solution: the anti-reverse component is a worm gear and a worm; the anti-reverse component is driven by a motor and the working end of the anti-reverse component is located on the rotating rod.

[0011] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0012] 1. Due to the use of a rotating rod to drive the sliding block to move up and down, the second rod with hinges pushes the clamping parts of the circumferential array to extend and retract radially along the first groove in a synchronous manner, applying force evenly to the inner wall of the workpiece, thereby achieving rapid positioning and clamping of ring-shaped workpieces of different diameters. The guide rod in the first slot constrains the movement trajectory of the clamping components, ensuring concentric movement of multiple clamping points and avoiding machining deviations caused by eccentric clamping. The inclined surface of the pressure block cooperates with the elastic element, automatically stretching the elastic element to fit the surface when the workpiece is pressed down, and then locking it with the threaded fastener, balancing rapid pre-tightening and high rigidity fixing, adapting to workpieces of different thicknesses. The worm gear mechanism of the anti-reverse component drives the rotating rod through a motor, utilizing its reverse self-locking characteristic to completely prevent clamping back during machining vibration, ensuring clamping stability. The rotating rod can be driven at a single point to synchronously adjust all clamping components, simplifying the operation process and reducing the time spent on multi-point adjustments. The inclined guide and elastic self-adaptation of the clamping component allow the workpiece to be automatically centered after being placed vertically, and can be quickly released with the unlocking fastener, improving material change efficiency. The circumferential array of clamping components disperses machining stress, reduces single-point load, and extends fixture life. The clamping and clamping components adopt a split structure, and worn parts can be replaced independently, reducing downtime maintenance costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the ring-shaped workpiece fixture in this utility model.

[0014] Figure 2 This is a schematic diagram of the ring-shaped workpiece fixture in this utility model.

[0015] Figure 3 for Figure 1 A magnified view of part A in the image.

[0016] In the diagram: 1. Workbench; 11. First groove; 12. Guide rod; 2. Clamping component; 21. Second groove; 22. Third groove; 3. Pressing component; 31. Pressing block; 311. Inclined surface; 32. First rod; 33. Elastic component; 34. Fixing component; 4. Moving device; 41. Rotating rod; 42. Sliding block; 43. Second rod; 5. Anti-reverse component. Detailed Implementation

[0017] This application provides a ring-shaped workpiece fixture, which solves the problem that the processing steps of the workpiece in the prior art also change with the processing method. When processing a ring-shaped workpiece, it is necessary to clamp it, but existing fixtures are not convenient for clamping and fixing ring-shaped workpieces of different sizes.

[0018] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows:

[0019] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0020] A ring-shaped workpiece fixture includes a worktable 1, a clamping member 2 for clamping the inner wall of the workpiece, a clamping member 3 for pressing the workpiece onto the worktable 1, a moving device 4 for synchronously moving the clamping member 2, and a stop member 5 for preventing the clamping member 2 from loosening during processing. The worktable 1 has a first groove 11. Several clamping members are arranged in a circular array in the first groove 11. The clamping members 2 slide along the first groove 11, and the number of clamping members 2 corresponds to the number of first grooves 11. The clamping member 3 is disposed on the clamping member 2. The moving device 4 is disposed at the bottom of the worktable 1. The working end of the moving device 4 is connected to the clamping member 2. The stop member 5 is disposed at the bottom of the worktable 1, and the working end of the stop member 5 is connected to the moving device 4.

[0021] A guide rod 12 is provided in the first groove 11; the guide rod 12 passes through the clamping member 2.

[0022] The clamping component 3 includes a pressure block 31, a first rod 32 guiding the pressure block 31, an elastic element 33 that keeps the pressure block 31 pressing the workpiece, and a fixing element 34 that fixes the position of the pressure block 31; the clamping component 2 has a second groove 21; the first rod 32 is disposed in the second groove 21; the pressure block 31 slides in the second groove 21 and the first rod 32 passes through the pressure block 31; the elastic element 33 is sleeved on the first rod 32 and one end of the elastic element 33 is fixed on the second groove 21, and the other end of the elastic element 33 is fixed on the pressure block 31; a third groove 22 is provided on the side wall of the second groove 21; the fixing element 34 is located in the third groove 22 and the fixing element 34 is threaded through the pressure block 31.

[0023] The pressure block 31 has an inclined surface 311; the inclined surface 311 faces the lower outer side of the worktable 1; when the workpiece contacts the inclined surface 311, the elastic element 33 is stretched until the inclined surface 311 abuts against the top of the workpiece, at which time the position of the fixing element 34 is fixed so that the pressure block 31 always presses the surface of the workpiece.

[0024] The moving device 4 includes a rotating rod 41, a sliding block 42 sliding on the rotating rod 41, and a second rod 43 that drives the clamping member 2 to move. The rotating rod 41 rotates at the middle of the worktable 1. The sliding block 42 is threadedly connected to the rotating rod 41. One end of the second rod 43 is hinged to the sliding block 42, and the other end of the second rod 43 is hinged to the clamping member 2. When the rotating rod 41 rotates, the sliding block 42 does not rotate and moves up and down, and the second rod 43 pushes the clamping member 2 to move.

[0025] The anti-reverse component 5 is a worm gear and a worm; the anti-reverse component 5 is driven by a motor and the working end of the anti-reverse component 5 is set on the rotating rod 41.

[0026] Because the rotating rod 41 drives the sliding block 42 to move up and down, the second rod 43, which is hinged, pushes the circumferential array of clamping members 2 to synchronously extend and retract radially along the first groove 11, applying force evenly to the inner wall of the workpiece, thus achieving rapid positioning and clamping of annular workpieces of different diameters. The guide rod 12 in the first groove 11 constrains the movement trajectory of the clamping member 2, ensuring concentric movement of multiple clamping points and avoiding machining deviations caused by eccentric clamping; the inclined surface 311 of the pressure block 31 cooperates with the elastic member 33, automatically stretching the elastic member 33 to fit the surface when the workpiece is pressed down, and then locking it with the thread of the fixing member 34, taking into account both rapid pre-tightening and high rigidity fixing, and adapting to workpieces of different thicknesses; the worm gear mechanism of the anti-reverse member 5 drives the rotating rod 41 through the motor, and utilizes its reverse self-locking characteristic to completely prevent clamping back during machining vibration. This ensures clamping stability; the rotating rod 41 can synchronously adjust all clamping parts 2 with a single point drive, simplifying the operation process and reducing the time spent on multi-point adjustments; the inclined surface 311 of the clamping part 3 guides and elastically adapts, allowing the workpiece to be automatically centered after being placed vertically, and can be quickly released with the unlocking and fixing part 34, improving material change efficiency; the circumferential array of clamping parts 2 disperses processing stress, reduces single-point load, and extends the life of the fixture; the clamping parts 2 and the clamping part 3 adopt a split structure, and worn parts can be replaced independently, reducing downtime maintenance costs.

[0027] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0028] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. An annular workpiece clamp characterized by, The device includes a worktable (1), a clamping member (2) for clamping the inner wall of the workpiece, a pressing member (3) for pressing the workpiece onto the worktable (1), a moving device (4) for synchronously moving the clamping member (2), and a stop member (5) for preventing the clamping member (2) from loosening during processing. The worktable (1) has a first groove (11). The first groove (11) is arranged in a circular array with several of them. The clamping member (2) slides along the first groove (11) and the number of the first groove (11) corresponds to the number of the clamping member (2). The pressing member (3) is disposed on the clamping member (2). The moving device (4) is disposed at the bottom of the worktable (1). The working end of the moving device (4) is connected to the clamping member (2). The stop member (5) is disposed at the bottom of the worktable (1) and the working end of the stop member (5) is connected to the moving device (4).

2. The annular workpiece clamp of claim 1, wherein, A guide rod (12) is provided in the first groove (11); the guide rod (12) passes through the clamping member (2).

3. The annular workpiece clamp of claim 1, wherein, The clamping member (3) includes a pressure block (31), a first rod (32) guiding the pressure block (31), an elastic member (33) that makes the pressure block (31) always press against the workpiece, and a fixing member (34) fixing the position of the pressure block (31); the clamping member (2) has a second groove (21); the first rod (32) is disposed in the second groove (21); the pressure block (31) slides in the second groove (21) and the first rod (32) passes through the pressure block (31); the elastic member (33) is sleeved on the first rod (32) and one end of the elastic member (33) is fixed on the second groove (21), and the other end of the elastic member (33) is fixed on the pressure block (31); a third groove (22) is provided on the side wall of the second groove (21); the fixing member (34) is located in the third groove (22) and the fixing member (34) is threaded through the pressure block (31).

4. The ring-shaped workpiece clamp as described in claim 3, characterized in that, The pressure block (31) has an inclined surface (311); the inclined surface (311) faces the outside and below of the worktable (1); the workpiece contacts the inclined surface (311) so that the elastic element (33) is stretched until the inclined surface (311) abuts against the top of the workpiece, at which time the position of the fixing element (34) is fixed so that the pressure block (31) always presses the surface of the workpiece.

5. The annular workpiece clamp as described in claim 1, characterized in that, The moving device (4) includes a rotating rod (41), a sliding block (42) sliding on the rotating rod (41), and a second rod (43) that drives the clamping member (2) to move; the rotating rod (41) rotates at the middle of the worktable (1); the sliding block (42) is threadedly connected to the rotating rod (41); one end of the second rod (43) is hinged to the sliding block (42), and the other end of the second rod (43) is hinged to the clamping member (2); when the rotating rod (41) rotates, the sliding block (42) does not rotate and moves up and down, and the second rod (43) pushes the clamping member (2) to move.

6. The annular workpiece clamp as described in claim 5, characterized in that, The anti-reverse component (5) is a worm gear and a worm; the anti-reverse component (5) is driven by a motor and the working end of the anti-reverse component (5) is located on the rotating rod (41).

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