A fixture for segmentally processing long strip-shaped workpieces

Abstract

The utility model discloses a kind of for long strip-shaped workpiece segmented processing fixture, including fixed base, fixed base is equipped with rotating device, rotating device is equipped with feed inlet, clamping assembly is installed in the movable end of rotating device, the passage for workpiece to enter is formed in clamping assembly, and the passage corresponds with feed inlet, clamping assembly fixes four sides of workpiece processing position, and reserve empty position, can reduce workpiece vibration and the situation of deviation in processing process, can reach high-precision processing, secondly, while providing enough clamping force, the stress direction is optimized, the workpiece deformation caused by clamping is reduced, after completing one side processing, workpiece is rotated a certain angle by rotating device driving clamping assembly synchronous rotation, then further processing, so on and so forth can complete the four side processing of workpiece, without taking out workpiece and changing position and re-entering fixture, can be completed once higher in processing efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of machining auxiliary fixture technology, specifically a fixture for segmented machining of long strip workpieces. Background Technology

[0002] In precision manufacturing of fields such as liquid-cooled servers, machining long, strip-shaped workpieces (e.g., made of SUS304L material, approximately 2061*60*35mm) such as water-cooling manifolds presents a significant challenge. These workpieces require high positional accuracy (typically ≤0.45mm). Existing technologies typically employ specialized equipment such as the VDM255 profile cutting machine for machining, which incurs high investment costs, requires a large footprint, and has limited versatility.

[0003] Traditional fixtures often suffer from problems such as unstable clamping, poor feeding and positioning accuracy, and deviations in form and position tolerances due to stress release and conflict between clamping force and material deformation direction during machining. Especially in the finishing stage, the 0.3-0.4mm deformation of the workpiece itself causes the workpiece to spring back after the fixture is released, resulting in the machining accuracy failing to meet requirements.

[0004] In addition, since processing requirements usually require processing multiple sides of the workpiece, but current processing equipment can only process one or two sides, it means that to complete a complete processing cycle, the workpiece needs to be repeatedly removed and clamped, which is inefficient. Utility Model Content

[0005] The purpose of this invention is to provide a fixture for segmented processing of long strip workpieces, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: A fixture for segmented processing of long strip workpieces includes a fixed base, on which a rotating device is mounted. The rotating device has a feed port, and a clamping assembly is mounted at the movable end of the rotating device. The clamping assembly forms a channel for the workpiece to enter, and the channel corresponds to the feed port. The clamping assembly fixes the four sides of the workpiece processing position and reserves clearance space.

[0007] In a further technical solution, the clamping assembly includes a support plate, the support plate has several holes along the channel, a number of fixing blocks are provided at intervals on one side of the surface of the support plate, and a side push cylinder is provided on the other side corresponding to the position of the fixing blocks. The output end of the side push cylinder is provided with a first pressure block. It also includes several upper pressing cylinders installed on the support plate. The cylinder body of the upper pressing cylinder is provided with a connecting member. The connecting member is rotatably connected to a swing arm. One end of the swing arm is connected to the output end of the upper pressing cylinder, and the other end is provided with a second pressing block.

[0008] A further technical solution is that the support plate is provided with pipes and has several interfaces formed on its surface, which are respectively connected to the side push cylinder and the upper clamping cylinder.

[0009] In a further technical solution, the support plate is provided with several pads at the positions corresponding to the channels.

[0010] A further technical solution is that the support plate is provided with several directional rollers on the left and right sides of the corresponding channel.

[0011] In a further technical solution, the rotating device includes an active rotating component and a driven rotating component. The output end of the active rotating component is connected to a first bridge plate, which is connected to one end of a support plate. The movable end of the driven rotating component is equipped with a second bridge plate, which is connected to the other end of a support plate. The driven rotating component is provided with a discharge port.

[0012] In a further technical solution, the movable ends of both the active rotating component and the driven rotating component extend to the other end of the feed inlet and the discharge outlet, respectively, and a positioning component is provided at the outer end. The two positioning components are respectively connected to the movable ends of the active rotating component and the driven rotating component.

[0013] In a further technical solution, the positioning component includes a fixing frame, the fixing frame having a through opening, the upper end of the opening having a limiting plate, the limiting plate having a stepped limiting groove, and the lower end of the opening being rotatably connected to a guide roller, the guide roller having a soft material on it.

[0014] The beneficial effects of this utility model are: This invention reduces workpiece vibration and misalignment during processing, achieving high-precision machining. Furthermore, while providing sufficient clamping force, it optimizes the force direction, reducing workpiece deformation caused by clamping. After machining one side, the rotating device drives the clamping assembly to rotate synchronously, causing the workpiece to rotate at a certain angle, typically 90°, so that one side faces upwards. Further machining is then performed, and so on, to complete machining of all four sides of the workpiece. There is no need to remove the workpiece, change its position, and reinsert it into the fixture, allowing for a more efficient, one-time machining process.

[0015] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description

[0016] Figure 1 : A three-dimensional structural diagram of this utility model.

[0017] Figure 2 : A structural diagram of the clamp in the rotating state of this utility model.

[0018] Figure 3: Structural diagram of the clamping assembly of this utility model.

[0019] Figure 4 : Structural diagram of the positioning component of this utility model.

[0020] Reference numerals: 1-Fixed base, 2-Rotating device, 21-Active rotating component, 22-Driven rotating component, 23-First bridge plate, 24-Second bridge plate, 25-Outlet, 26-Inlet, 3-Clamping component, 31-Support plate, 32-Slot hole, 33-Fixed block, 341-Side push cylinder, 342-First pressure block, 351-Upper clamping cylinder, 352-Connector, 353-Swing arm, 354-Second pressure block, 36-Padded block, 37-Directional roller, 4-Positioning component, 41-Fixed frame, 42-Opening, 43-Limiting plate, 44-Limiting groove, 45-Guide roller, 5-Workpiece. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please refer to Figure 1-4 ; The processing fixture described in this utility model is suitable for processing long and narrow workpieces 5, making its processing accuracy higher and its efficiency more efficient. It is usually used in conjunction with a machine tool. Specifically, it includes a fixed base 1 on which a rotating device 2 is installed. The rotating device 2 has a feed port 26. A clamping assembly 3 is installed at the movable end of the rotating device 2. The clamping assembly 3 forms a channel for the workpiece 5 to enter, and the channel corresponds to the feed port 26. It should be noted that the feed port 26 is relatively large. Preferably, the feed port 26 is circular, and the channel corresponds to the center of the feed port 26. The clamping assembly 3 fixes the four sides of the workpiece 5 at the processing position and reserves clearance space. Specifically, the four sides refer to the top, bottom, left, and right. The workpiece 5 may be cylindrical or prismatic, but all four sides are fixed.

[0023] During loading, the long strip workpiece 5 is fed into the channel through the feed port 26 of the rotating device 2. The workpiece 5 is then fixed on all four sides by the clamping assembly 3. The clamping assembly 3 forms several fixed points on the surface of the workpiece 5, and the clearance position is located between each fixed point. The clearance position is the processing position. Of course, not all clearance positions need to be processed. They can be processed at a certain position or an adjacent position, etc. During the processing, the vibration and deviation of the workpiece 5 can be reduced, and high-precision processing can be achieved. Secondly, while providing sufficient clamping force, the force direction is optimized, and the deformation of the workpiece 5 caused by clamping is reduced.

[0024] After one side of the workpiece is processed, the rotating device 2 drives the clamping assembly 3 to rotate synchronously, causing the workpiece 5 to rotate at a certain angle, generally 90°, so that one side faces upwards. Then, further processing is carried out. This process is repeated to complete the processing of all four sides of the workpiece 5. There is no need to remove the workpiece 5, change its position, and put it back into the fixture. The processing can be completed in one go, which is more efficient. Since the workpiece 5 is relatively long, after a part of the processing is completed, the clamping assembly 3 releases the workpiece 5, and then the feed bar of the machine tool pushes the workpiece 5 into the fixture a certain distance, so that the processed part is pushed out of the fixture, while the part to be processed enters the fixture. Then, the clamping assembly 3 fixes the workpiece 5 and processes it again.

[0025] One embodiment of the clamping assembly 3 of this utility model includes a support plate 31. The support plate 31 has a plurality of holes 32 along the channel. A plurality of fixed blocks 33 are provided at intervals on one side of the surface of the support plate 31. A side push cylinder 341 is provided on the other side corresponding to the position of the fixed blocks 33. The channel does not have a particularly obvious structure and is mainly formed between the fixed blocks 33 and the side push cylinder 341. Of course, a limiting groove can also be provided on the surface of the support plate 31, and the fixed blocks 33 are located in the limiting groove. The output end of the side push cylinder 341 is provided with a first pressure block 342. It also includes an upper pressing cylinder 351 installed on the support plate 31. A connecting member 352 is provided on the cylinder body of the upper pressing cylinder 351. A swing arm 353 is rotatably connected to the connecting member 352. One end of the swing arm 353 is connected to the output end of the upper pressing cylinder 351, and the other end is provided with a second pressure block 354. First, workpiece 5 enters the support plate 31 through the feed port 26 and is located between the side push cylinder 341 and the fixing block 33. At this time, workpiece 5 is not yet positioned and may tilt. Then, several side push cylinders 341 extend to make several pressure blocks move closer to the fixing block 33 at the same time, pushing workpiece 5 to the side for alignment. Finally, several first pressure blocks 342 and the fixing parts clamp and fix the side of workpiece 5. Preferably, the first pressure blocks 342 are made of soft rubber to avoid damaging workpiece 5. Then, several upper pressing cylinders 351 extend at the same time to make the swing arm 353 rotate. Then, a second pressure block 354 is provided at the other end to apply pressure to the upper surface of workpiece 5. Finally, the second pressure block 354 cooperates with the support plate 31 to clamp and fix workpiece 5. The positions of several fixed blocks 33, several side push cylinders 341, and several upper clamping cylinders 351 are specially arranged, with the empty positions between them being clearance positions, as well as the slot 32 positions of the support plate 31. The equipment can process the workpiece 5 in these empty positions without interference or obstruction. When working, the spindle of the machine tool clamps the feed bar and intermittently pushes the workpiece 5 to feed. Through the innovative feeding scheme of "spindle clamping feed bar" combined with the X-axis movement of the machine tool, high-precision segmented feeding and positioning of ultra-long workpiece 5 on four axes is achieved. In addition, the composite clamping method of "side push cylinder 341 + upper clamping cylinder" provides sufficient clamping force while optimizing the force direction and reducing the deformation of workpiece 5 caused by clamping.

[0026] Preferably, the machine tool spindle clamps the feed bar and precisely inserts its front end into the pre-machined positioning hole on the workpiece 5. Then, by controlling the movement of the X-axis of the machine tool, precise segmented feeding at different machining stations is achieved.

[0027] The fixture has a compact structure and can be used on general-purpose vertical machining centers such as V-13, which effectively reduces equipment costs and floor space, and improves equipment versatility. It is particularly suitable for roughing operations of long, easily deformable workpieces 5 such as water-cooled manifolds, and the machining accuracy meets the requirements. It can replace some of the processing functions of special profile machines. Preferably, the support plate 31 is provided with several pads 36 at the position corresponding to the channel to lift the workpiece 5.

[0028] Furthermore, since the support plate 31 needs to rotate 360°, and the side push cylinders 341 and the upper clamping cylinder 351 can be pneumatic cylinders or hydraulic cylinders, it is necessary to connect pipelines. Rotation will cause the pipelines to become tangled and may block the processing position. Therefore, an internal method is adopted. The support plate 31 is equipped with pipelines and has several interfaces formed on its surface, which are respectively connected to the side push cylinders 341 and the upper clamping cylinder 351.

[0029] Furthermore, the support plate 31 is provided with several directional rollers 37 on the left and right sides of the corresponding channel to assist in pushing the workpiece 5 and reduce friction, while also playing a limiting role. At least two sets of directional rollers 37 are set at both ends of the support plate 31 to provide auxiliary clamping and support for both ends of the workpiece 5.

[0030] One embodiment of the rotating device 2 of this utility model specifically includes an active rotating component 21 and a driven rotating component 22. The active rotating component 21 is a combination of a four-axis indexing plate and a motor, which drives the four-axis indexing plate to rotate. The driven rotating component 22 is a four-axis tailstock. Both the four-axis indexing plate and the four-axis tailstock have through holes with a diameter of 140mm, allowing long strip-shaped workpieces 5 to pass through, thus enabling the processing of extra-long workpieces 5. These openings 42 are respectively formed as a feed port 26 and a discharge port 25. The output end of the active rotating component 21 is connected to a first bridge plate 23, which is connected to one end of a support plate 31. The movable end of the driven rotating component 22 is equipped with a second bridge plate 24, which is connected to the other end of the support plate 31. The motor drives the four-axis indexing plate to rotate, and the first bridge plate 23, the support plate 31, and the second bridge plate 24 act as a bridge to link the four-axis tailstock, thereby causing them to rotate synchronously.

[0031] Furthermore, the movable ends of both the active rotating component 21 and the driven rotating component 22 extend to the other end of the feed port 26 and the discharge port 25. Based on the structure of the four-axis indexing plate and the four-axis tailstock, the movable ends extend to both ends of the body. The two positioning components 4 are connected to the movable ends of the active rotating component 21 and the driven rotating component 22 respectively. That is, the positioning component 4 is connected to the end away from the support plate 31. The positioning component 4 will also rotate synchronously. The positioning component 4 plays the role of limiting the position from the beginning of feeding to avoid left and right deviation.

[0032] Furthermore, the positioning component 4 includes a fixing frame 41, which has a through opening 42 corresponding to the feed port 26 or the discharge port 25. The upper end of the opening 42 is provided with a limiting plate 43, and the limiting plate 43 has a stepped limiting groove 44. The lower end of the opening 42 is rotatably connected to a guide roller 45, which is provided with a soft material. The workpiece 5 is prismatic. The distance from the surface of the guide roller 45 to the limiting groove 44 is slightly less than the height of the clamping block. During feeding, the soft material is used to compress and deform the workpiece, so that the upper surface of the workpiece 5 abuts against the bottom of the limiting groove 44, thereby achieving directional pushing. Of course, the upper surface of the workpiece 5 will rub against the limiting plate 43 during feeding, but it will not affect the shape of the workpiece 5. In addition, in the clamping component 3, the step of fixing the workpiece 5 to the side is designed so that the position of the workpiece 5 after it is fixed to the side is not on the same straight line as the positioning position. Therefore, the side of the fixing block 33 should be close to the side of the workpiece 5 in the initial design to reduce its deformation amplitude.

[0033] Based on all the above embodiments, actual verification shows that when the fixture is used for rough machining of SUS304L water-cooled manifold empty pipe, the positional accuracy can be controlled within 0.3mm, which meets the process requirements, and the machining cycle is comparable to that of special equipment, realizing efficient and high-quality machining on general vertical machining.

[0034] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0035] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fixture for segmentally processing a long strip-shaped workpiece (5), characterized by: Includes a fixed base (1), on which a rotating device (2) is installed. The rotating device (2) has a feed port (26). A clamping assembly (3) is installed at the movable end of the rotating device (2). A channel for the workpiece (5) to enter is formed in the clamping assembly (3), and the channel corresponds to the feed port (26). The clamping assembly (3) fixes the four sides of the workpiece (5) at the processing position and reserves clearance space.

2. A fixture for segmenting a long strip-shaped workpiece (5) according to claim 1, characterized in that: The clamping assembly (3) includes a support plate (31), the support plate (31) has a plurality of holes (32) along the channel, a plurality of fixing blocks (33) are provided at intervals on one side of the surface of the support plate (31), and a side push cylinder (341) is provided on the other side corresponding to the position of the fixing block (33). The output end of the side push cylinder (341) is provided with a first pressure block (342). It also includes several upper pressing cylinders (351) installed on the support plate (31). The cylinder body of the upper pressing cylinder (351) is provided with a connecting piece (352). The connecting piece (352) is rotatably connected to a swing arm (353). One end of the swing arm (353) is connected to the output end of the upper pressing cylinder (351), and the other end is provided with a second pressing block (354).

3. A jig for segmented machining of a long strip workpiece (5) according to claim 2, characterized in that: The support plate (31) is provided with pipes and has several interfaces on its surface, which are respectively connected to the side push cylinder (341) and the upper pressing cylinder (351).

4. A fixture for segmented machining of a long strip workpiece (5) according to claim 2, characterized in that: The support plate (31) is provided with several pads (36) at the positions corresponding to the channels.

5. A fixture according to claim 2, characterized in that: The support plate (31) is provided with several directional rollers (37) on the left and right sides of the corresponding channel.

6. A fixture for segmenting a long, thin workpiece (5) according to claim 1, characterized in that: The rotating device (2) includes an active rotating component (21) and a driven rotating component (22). The output end of the active rotating component (21) is connected to a first bridge plate (23), which is connected to one end of the support plate (31). The movable end of the driven rotating component (22) is equipped with a second bridge plate (24), which is connected to the other end of the support plate (31). The driven rotating component (22) is provided with a discharge port (25).

7. A fixture for segmenting a long strip-shaped workpiece (5) according to claim 6, characterized in that: The active rotating component (21) and the driven rotating component (22) have their movable ends extended to the other end of the feed inlet (26) and the discharge outlet (25), respectively. Positioning components (4) are provided at the outer ends, and the two positioning components (4) are respectively connected to the movable ends of the active rotating component (21) and the driven rotating component (22).

8. A fixture for segmented machining of a long strip workpiece (5) according to claim 7, characterized in that: The positioning component (4) includes a fixing frame (41), the fixing frame (41) is provided with a through opening (42), the upper end of the opening (42) is provided with a limiting plate (43), the limiting plate (43) is provided with a stepped limiting groove (44), the lower end of the opening (42) is rotatably connected with a guide roller (45), and the guide roller (45) is provided with a soft material.

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