Ring-shaped piece radial cutting-off clamp
By designing a radial cutting fixture for annular parts that includes a base, turntable, pressure plate and flexible pad, the problem of unstable clamping of annular workpieces during radial cutting was solved, achieving high-precision cutting and low-cost production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-07
- Publication Date
- 2026-04-10
AI Technical Summary
In the prior art, the radial cutting of annular workpieces is prone to positional instability due to unstable clamping, resulting in changes in the cutting path, inconsistent cutting surface shape, low yield, and high production cost.
The fixture design includes a base, turntable, pressure plate and flexible pad. Through the cooperation of the limiting shaft and limiting ring, combined with the elastic deformation of the flexible pad, it can stably clamp the ring-shaped workpiece. And through the precise positioning of the reference groove and cutting groove, it can ensure the accuracy of the wire saw cutting path.
It improves the clamping stability and cutting accuracy of ring-shaped workpieces, reduces production costs, and increases product qualification rate.
Smart Images
Figure CN224101973U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to mechanical processing technical field especially relates to a ring piece radial cut-off clamp. BACKGROUND
[0002] In the field of aerospace, the demand for precision parts is increasing. During the radial cutting process of a ring piece, as shown in the drawings, the clamp is first needed to clamp and fix the ring workpiece, and then the wire saw is used for radial cutting. Figure 1
[0003] Figure 1 The process of the ring workpiece needs to be cut into three pieces along the radial direction, and the inner diameter edge is rounded, that is, the wire saw does not move linearly along the radial direction of the ring workpiece. The upper and lower end surfaces of the ring workpiece are inclined surfaces, and the surface quality requirement is high. If the axial clamping force is applied to the inclined surfaces of the upper and lower ends of the ring workpiece, the contact area between the clamping plate and the two end surfaces of the ring workpiece is small, the axial force is decomposed into radial force, and the part is easy to lose stability, resulting in a slight change in position.
[0004] The existing cutting clamping method usually uses a rigid three-jaw clamp to clamp the side wall of the ring workpiece. The three jaws of the three-jaw clamp are evenly distributed along the circumference of the ring workpiece. When the ring workpiece is cut into one piece along the radial direction, the connection state of the whole ring workpiece changes suddenly, causing the change of the force, the positioning point of the rigid three-jaw clamp deviates from the original clamping force, the broken piece loses stability, the clamping position of the three-jaw clamp changes slightly, the cutting path changes, and finally the shape of the cutting surface is inconsistent with the required shape, resulting in low yield and high production cost. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing a ring piece radial cut-off clamp, which is convenient and fast to clamp the ring workpiece, and stable and reliable in clamping the ring workpiece. The clamp has high cutting precision and low production cost.
[0006] The above-mentioned purpose of the utility model is realized by the following technical scheme:
[0007] A ring radial cutting clamp, comprising a base, a rotating disc, a pressing plate and a flexible pad, the rotating disc comprises a base disc, a limiting shaft, a limiting ring and a rotating shaft arranged coaxially, the limiting shaft and the limiting ring are fixedly connected to the upper surface of the base disc, the rotating shaft is fixedly connected to the lower surface of the base disc, the limiting shaft is matched with the inner diameter of the workpiece to be cut, the inner diameter of the limiting ring is matched with the outer diameter of the workpiece to be cut, the base disc, the limiting shaft and the limiting ring form an annular accommodating cavity, the base is provided with a shaft hole matched with the rotating shaft, and the rotating disc is provided with a cutting groove for accommodating the wire saw in the radial direction of the limiting shaft; the flexible pad comprises a lower pad and an upper pad, the lower pad is arranged in the accommodating cavity, the lower end of the workpiece to be cut is embedded in the accommodating cavity, the upper pad is arranged on the upper end of the workpiece to be cut, the pressing plate is arranged above the upper pad and is screwed with the limiting shaft through a fastening screw, the pressing plate and the flexible pad are provided with a guide groove corresponding to the cutting groove in the radial direction of the limiting shaft, and the base is provided with a reference groove corresponding to the corresponding cutting groove and guide groove.
[0008] The ring radial cutting clamp, wherein the rotating mechanism comprises a shaft hole arranged on the base, the bottom surface of the base disc is provided with a rotating shaft matched with the shaft hole, the rotating shaft is arranged coaxially with the base disc, and the rotating shaft is rotatably connected in the shaft hole.
[0009] The ring radial cutting clamp, wherein the upper pad and the lower pad are annular, the lower surface of the lower pad is pasted with the base disc in the accommodating cavity, and the upper surface of the upper pad is pasted with the lower surface of the pressing plate.
[0010] The ring radial cutting clamp, wherein the cutting groove is uniformly distributed with multiple cutting grooves in the radial direction of the limiting shaft, and the inner side end of the cutting groove extends to the inside of the limiting shaft.
[0011] The ring radial cutting clamp, wherein the extension line of the center line of the reference groove passes through the center of the shaft hole, and the inner side end of the reference groove is vertically projected to coincide with the inner side end of the cutting groove.
[0012] The ring radial cutting clamp, wherein the inner side end of the guide groove on the pressing plate is vertically projected to coincide with the inner side end of the cutting groove.
[0013] The ring radial cutting clamp, wherein the cutting groove is 3.
[0014] The ring radial cutting clamp, wherein the base is provided with a fixing hole, and a countersunk screw is arranged in the fixing hole and screwed with the workbench.
[0015] The ring radial cutting clamp, wherein the height of the limiting shaft is less than the height of the workpiece to be cut.
[0016] The radial cutting clamp for the ring-shaped workpiece, wherein the base is provided with positioning holes, the base disc is provided with insertion holes in the circumferential direction, the number of the insertion holes is same as that of the cutting grooves, the positioning holes correspond to the insertion holes when the reference grooves correspond to the cutting grooves, and the limiting pin rods are embedded in the corresponding positioning holes and insertion holes.
[0017] The radial cutting clamp for the ring-shaped workpiece, wherein the base is provided with positioning holes, the base disc is provided with insertion holes in the circumferential direction, the number of the insertion holes is same as that of the cutting grooves, the positioning holes correspond to the insertion holes when the reference grooves correspond to the cutting grooves, and the limiting pin rods are embedded in the corresponding positioning holes and insertion holes.
[0018] Therefore, the radial cutting clamp for the ring-shaped workpiece has the advantages of convenient and fast clamping of the ring-shaped workpiece, stable and reliable clamping of the ring-shaped workpiece, high cutting precision, high cutting efficiency and improved product qualification rate.
[0019] The radial cutting clamp for the ring-shaped workpiece, wherein the base is provided with positioning holes, the base disc is provided with insertion holes in the circumferential direction, the number of the insertion holes is same as that of the cutting grooves, the positioning holes correspond to the insertion holes when the reference grooves correspond to the cutting grooves, and the limiting pin rods are embedded in the corresponding positioning holes and insertion holes. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 is a top view of cutting a ring-shaped workpiece into three pieces along the radial direction in the prior art;
[0021] Figure 2 is a structural schematic view of the utility model;
[0022] Figure 3 is an exploded structural schematic view of the utility model;
[0023] Figure 4 is a structural schematic view of the turntable of the utility model.
[0024] Fig. 1 is a base; 11 is a reference groove; 12 is a shaft hole; 13 is a fixed hole; 14 is a positioning hole; 2 is a turntable; 21 is a base disc; 211 is a rotating shaft; 212 is an insertion hole; 22 is a limiting shaft; 23 is a limiting ring; 24 is a cutting groove; 3 is a pressing plate; 4 is a flexible pad; 41 is a lower pad; 42 is an upper pad; 5 is a containing cavity; 6 is a guide groove; 7 is a limiting pin rod; 8 is a fastening screw; 9 is a workpiece to be cut. DETAILED DESCRIPTION
[0025] The following will be described in detail in combination with the accompanying drawings. Figures 2-4 The utility model will be further described in detail.
[0026] Figure 1 is a top view of cutting a ring-shaped workpiece into three pieces along the radial direction in the prior art.
[0027] As Figures 2-4As shown, a radial cutting clamp of a ring member includes a base 1, a rotating disc 2, a pressing plate 3 and a flexible pad 4. The base 1 is rectangular or circular. The rotating disc 2 includes a base plate 21, a limiting shaft 22, a limiting ring 23 and a rotating shaft 211. The limiting shaft 22 and the limiting ring 23 are fixedly connected to the upper surface of the base plate 21. The rotating shaft 211 is fixedly connected to the lower surface of the base plate 21. The limiting shaft 22 is adapted to the inner diameter of a workpiece 9 to be cut. The inner diameter of the limiting ring 23 is adapted to the outer diameter of the workpiece 9 to be cut. An annular accommodating cavity 5 is formed between the base plate 21, the limiting shaft 22 and the limiting ring 23. The base 1 is provided with a shaft hole 12 adapted to the rotating shaft 211. The rotating disc 2 is rotatably connected to the base 1 through the cooperation of the rotating shaft 211 and the shaft hole 12. The rotating disc 2 is provided with a cutting groove 24 for accommodating a wire saw in the radial direction of the limiting shaft 22. The flexible pad 4 includes a lower pad 41 and an upper pad 42. The lower pad 41 is arranged in the accommodating cavity 5. The lower end of the workpiece 9 to be cut is embedded in the accommodating cavity 5. The upper pad 42 is arranged at the upper end of the workpiece 9 to be cut. The pressing plate 3 is arranged above the upper pad 42 and is screwed with the limiting shaft 22 through a fastening screw 8. The pressing plate 3 and the flexible pad 4 are provided with a guide groove 6 corresponding to the cutting groove 24 in the radial direction of the limiting shaft 22. The base 1 is provided with a reference groove 11 corresponding to the cutting groove 24 and the guide groove 6.
[0028] The workpiece 9 to be cut is positioned by the limiting shaft 22 and the limiting ring. The pressing plate 3 is provided with a through hole. A fastening screw 8 is screwed with the limiting shaft 22 in the through hole. The axis of the workpiece 9 to be cut is pressed and fastened by the pressing plate 3. The workpiece 9 to be cut is fixed in an axial soft clamping manner. The flexible pad 4 is arranged at the upper and lower ends of the workpiece 9 to be cut. The elastic deformation characteristics of the flexible pad 4 ensure the instability of the workpiece 9 to be cut caused by stress deformation during cutting. The accuracy of the radial cutting of the workpiece 9 to be cut is ensured.
[0029] As shown in Figure 3 , 4 , the rotating mechanism of the embodiment includes a shaft hole 12 arranged on the base 1. The bottom surface of the base plate 21 is provided with a rotating shaft 211 adapted to the shaft hole 12. The rotating shaft 211 is coaxially arranged with the base plate 21 and is rotatably connected in the shaft hole 12. The rotating disc 2 can be rotated 360° on the base 1 by the rotating mechanism. The reference groove 11 is aligned with the corresponding cutting groove 24 and guide groove 6. It is ensured that the wire saw can pass through the reference groove 11, the cutting groove 24 and the guide groove 6 located in the same plane to perform radial cutting on the workpiece 9 to be cut.
[0030] As shown in Figure 3As shown, in order to simplify the installation of the clamp and improve cutting efficiency, in an embodiment, the upper pad 42 and the lower pad 41 are annular, the upper pad 42 and the lower pad 41 are respectively provided with guide grooves 6 in the radial direction, the lower surface of the lower pad 41 is pasted with the bottom disc 21 in the accommodating cavity 5, and the upper surface of the upper pad 42 is pasted with the lower surface of the pressing plate 3. The guide grooves 6 on the upper pad 42 and the lower pad 41 correspond to the guide grooves 6 on the pressing plate 3 one by one.
[0031] By providing the upper pad 42 and the lower pad 41 at the upper and lower ends of the workpiece 9 to be cut, the upper pad 42 and the lower pad 41 are made of flexible materials such as rubber or silicone rubber material. When the workpiece 9 to be cut loses stability due to split cutting, the flexible pad 4 offsets the external force change of the workpiece 9 to be cut through elastic micro-deformation, so as to ensure that the workpiece 9 to be cut is still in a relatively stable state. The micro-deformation of the rubber or silicone rubber material can be in the nanometer level, which is sufficient to meet the requirements of the micron-level precision of the part size precision.
[0032] The use of the flexible pad 4 can also reduce the risk of injury to the workpiece 9 to be cut. The flexible pad 4 can be used repeatedly for a long time and is convenient to replace.
[0033] The elastic deformation of the flexible pad 4 is compensated into the instability displacement of the workpiece 9 to be cut, so as to ensure that the workpiece 9 to be cut cut along the radial direction still maintains a stress mode similar to the original clamping and fixing, thereby ensuring the stability of the part. When the wire saw cuts the workpiece 9 to be cut in the radial direction, the radial cutting path can be curved, broken line, etc. according to the production needs. The clamping mode of the clamp to the workpiece 9 to be cut ensures the radial cutting precision of the small and precise annular part.
[0034] As shown in the figure, Figure 3 The cutting grooves 24 are uniformly distributed in multiple along the radial direction of the limiting shaft 22, and the inner side end of the cutting groove 24 extends into the limiting shaft 22. The extension of the cutting groove 24 into the limiting shaft 22 can leave space for the cutting of the wire saw, so as to ensure that the wire saw can smoothly cut the workpiece 9 to be cut in the radial direction. The cutting groove 24 of the embodiment is 3, and different numbers of cutting grooves 24 can be provided on the turntable 2 according to different needs of the workpiece 9 to be cut.
[0035] The extension line of the center line of the reference groove 11 of the embodiment passes through the center of the shaft hole 12, and the inner side end of the reference groove 11 is vertically projected and coincides with the inner side end of the cutting groove 24. In this way, it is ensured that the reference groove 11 can be located in the same vertical plane with the cutting groove 24 when the turntable 2 rotates on the base 1, and it is also ensured that the wire saw can avoid interference with the base 1 when cutting the workpiece 9 to be cut.
[0036] The inner side end of the guide groove 6 on the pressing plate 3 is also vertically projected and coincides with the inner side end of the cutting groove 24, so as to avoid interference between the wire saw and the pressing plate 3 when cutting the workpiece 9 to be cut.
[0037] In order to fix the base 1 and ensure the cutting accuracy of the workpiece 9, the base 1 is provided with fixing holes 13. In this embodiment, two fixing holes 13 are provided, and countersunk screws that are screwed into the fixing holes 13 are provided.
[0038] The height of the limiting shaft 22 is less than the height of the workpiece 9 to be cut, so that the pressure plate 3 can apply force to the workpiece 9 to be cut in the axial direction when connected to the limiting shaft 22.
[0039] like Figure 3 As shown, the base 1 is provided with a positioning hole 14, and the chassis 21 is provided with an insertion hole 212 along the circumference. The number of insertion holes 212 is the same as the number of cutting grooves 24. When the reference groove 11 corresponds to the corresponding cutting groove 24, the positioning hole 14 corresponds to the corresponding insertion hole 212, and the positioning hole 14 and the corresponding insertion hole 212 are embedded with a limit pin 7.
[0040] By rotating the turntable 2, the reference groove 11 on the base 1 corresponds to the corresponding cutting groove 24. At the same time, the cutting groove 24 also corresponds to the corresponding guide groove 6 on the flexible pad 4 and the pressure plate 3. At this time, the positioning hole 14 corresponds to the corresponding insertion hole 212. The limiting pin 7 is embedded in the positioning hole 14 and the corresponding insertion hole 212, so that the turntable 2 can be placed on the base 1 to rotate, ensuring the cutting accuracy of the workpiece 9 to be cut.
[0041] The working process of this novel radial cutting fixture for annular components is as follows:
[0042] First, fix the base 1 to the wire saw workbench using countersunk screws passing through the fixing hole 13. Insert the rotating shaft 211 of the turntable 2 into the shaft hole 12 of the base 1. Rotate the turntable 2 onto the base 1 and align the cutting groove 24 with the reference groove 11. At this point, the positioning hole 14 on the base 1 corresponds to the corresponding insertion hole 212 on the chassis 21. Insert the limiting pin 7 into the positioning hole 14 and the insertion hole 212. Attach the lower pad 41 to the chassis 21 inside the receiving cavity 5, and attach the upper pad 42 to the bottom surface of the pressure plate 3. Place the workpiece 9 to be cut onto the limiting shaft 22, ensuring that the lower end of the workpiece 9 is embedded in the receiving cavity 5 and abuts against the lower pad 41. The pressure plate 3 is placed on the upper end of the workpiece 9 to be cut, and the upper pad 42 abuts against the upper end of the workpiece 9 to be cut. The pressure plate 3 and the limiting shaft 22 are pressed together by the fastening screw 8 to press the workpiece 9 to be cut. The wire saw passes through the reference groove 11, the corresponding cutting groove 24 and the corresponding guide groove 6 to complete one radial cut of the workpiece 9 to be cut. The limiting pin 7 is removed, the turntable 2 is rotated and another corresponding cutting groove 24 and guide groove 6 are aligned with the reference groove 11. At this time, the positioning hole 14 is aligned with the corresponding insertion hole 212. The limiting pin 7 is inserted into the positioning hole 14 and the corresponding insertion hole 212. The above operation is repeated until the radial cut of the remaining workpiece 9 to be cut is completed.
[0043] The embodiments of the present embodiment are the preferred embodiments of the present utility model, not limited to the protection scope of the present utility model, so: all equivalent changes made according to the structure, shape and principle of the present utility model should be covered in the protection scope of the present utility model.
Claims
1. A ring radial cutting fixture, characterized by, The utility model relates to a cutting device for cutting workpiece, which comprises a base, a rotating disc, a pressing plate and a flexible pad, the rotating disc comprises a base plate, a limiting shaft, a limiting ring and a rotating shaft arranged coaxially, the limiting shaft and the limiting ring are fixedly connected to the upper surface of the base plate, the rotating shaft is fixedly connected to the lower surface of the base plate, the limiting shaft is matched with the inner diameter of the workpiece to be cut, the inner diameter of the limiting ring is matched with the outer diameter of the workpiece to be cut, a ring-shaped accommodating cavity is formed between the base plate and the limiting shaft and the limiting ring, the base is provided with a shaft hole matched with the rotating shaft, and the rotating disc is provided with a cutting groove along the radial direction of the limiting shaft for accommodating the wire saw.
2. The ring radial cut clamp of claim 1, wherein, The upper pad and the lower pad are both annular, the lower surface of the lower pad is pasted to the base plate in the accommodating cavity, and the upper surface of the upper pad is pasted to the lower surface of the pressing plate.
3. The ring radial cut clamp of claim 1 wherein, The cutting grooves are uniformly distributed along the radial direction of the limiting shaft, and the inner side end of the cutting groove extends to the limiting shaft.
4. The ring radial cut clamp of claim 3, wherein, The extension line of the center line of the reference groove passes through the center of the shaft hole, and the inner side end of the reference groove is vertically projected to coincide with the inner side end of the cutting groove.
5. The ring radial cut clamp of claim 3 wherein, The inner side end of the upper guide groove of the pressing plate is vertically projected to coincide with the inner side end of the cutting groove.
6. The ring radial cut clamp of claim 3 wherein, The cutting groove is 3.
7. The ring radial cut clamp of claim 1 wherein, The base is provided with a fixing hole, and a countersunk screw is arranged in the fixing hole and screwed with the workbench.
8. The ring radial cut clamp of claim 1 wherein, The height of the limiting shaft is less than the height of the workpiece to be cut.
9. The ring radial cut clamp of claim 1 wherein, The base is provided with a positioning hole, the base plate is provided with an insertion hole along the circumferential direction, the number of the insertion hole is the same as that of the cutting groove, when the reference groove corresponds to the corresponding cutting groove, the positioning hole corresponds to the corresponding insertion hole, and a limiting pin is arranged in the positioning hole and the corresponding insertion hole.
10. The ring radial cut clamp of claim 1 wherein, The base is rectangular or circular.