Grinding clamp and grinding mechanism
By designing the machining opening and clearance groove structure of the positioning and clamping components on the grinding fixture, the workpiece can be ground on both sides in one clamping, which solves the position deviation problem caused by repeated clamping and improves grinding accuracy and efficiency.
Patent Information
- Application Number
- CN202423321238.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2026-01-27
- Estimated Expiration
- 2034-12-31
AI Technical Summary
In the prior art, repeated clamping of the workpiece causes positional deviation of the part of the workpiece to be ground, resulting in inconsistent grinding depth and reducing the accuracy of the ground workpiece.
Design a grinding fixture, including a positioning component and a clamping component. By opening a machining port and a clearance groove on the positioning component and the clamping component respectively, the end of the workpiece to be ground extends out, and the grinding wheel grinds both sides of the cutting edge of the workpiece through the clearance groove, so as to complete the grinding of both sides in one clamping and avoid positional deviation.
It improves the precision and consistency of grinding workpieces, reduces the chance of over-grinding of coatings, ensures consistent cutting edge depth and angle, and improves grinding efficiency.
Smart Images
Figure CN223834267U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of grinding fixing mechanisms, specifically to a grinding fixture and grinding mechanism. Background Technology
[0002] Currently, when grinding the cutting edges of workpieces such as cutting tools, a jig is typically used to hold and fix the workpiece, ensuring the part to be ground is in contact with the grinding wheel. After one side of the cutting edge is ground, the workpiece is removed and re-clamped into the jig, and then the other side of the cutting edge is ground. However, repeatedly clamping the workpiece can cause deviations in its clamping position, resulting in misalignment of the part to be ground. Consequently, after the cutting edge is ground, there is a significant difference in the grinding depth on both sides, leading to lower precision in the grinding process. Utility Model Content
[0003] In view of the above, it is necessary to propose a grinding fixture and grinding mechanism to improve the accuracy of grinding workpieces.
[0004] This application provides a grinding fixture, including a positioning component and a clamping component. The clamping component is detachably mounted on the positioning component, and a positioning space is provided between the positioning component and the clamping component. The positioning space is used to position a workpiece. The positioning component has a first clearance groove and a first machining port. The first clearance groove is located on the side of the positioning component opposite to the clamping component, and the first machining port penetrates the positioning component and communicates with the first clearance groove. The clamping component has a second clearance groove and a second machining port. The second clearance groove is located on the side of the clamping component opposite to the positioning component, and the second machining port penetrates the clamping component and communicates with the second clearance groove. The second machining port is opposite to the first machining port. The first machining port and the second machining port are used to communicate with the positioning space, and the first machining port and the second machining port are also used to allow the end of the workpiece to be ground to extend out.
[0005] In some embodiments, the first clearance groove has a first bottom wall, the second clearance groove has a second bottom wall, the first bottom wall and the second bottom wall each have a first end and a second end, the first processing port is disposed corresponding to the first end of the first bottom wall, the first bottom wall is disposed inclined downward from the corresponding second end toward the corresponding first end, the second processing port is disposed corresponding to the first end of the second bottom wall, and the second bottom wall is disposed inclined downward from the corresponding second end toward the corresponding first end.
[0006] In some embodiments, the positioning component has a first positioning groove on one side facing the clamping component, and the clamping component has a second positioning groove on one side facing the positioning component. The second positioning groove is disposed opposite to the first positioning groove, and the first positioning groove and the second positioning groove together enclose at least a portion of the positioning space.
[0007] In some embodiments, the portion of the positioning component near the first processing port includes a first wear-resistant portion, the first processing port penetrating the first wear-resistant portion, and the portion of the clamping component near the second processing port includes a second wear-resistant portion, the second processing port penetrating the second wear-resistant portion.
[0008] In some embodiments, the positioning component includes a positioning member and a support member, the clamping component is detachably covered by the positioning member, the support member is disposed on the side of the positioning member facing the clamping component, and the positioning member is the first wear-resistant part; the first clearance groove includes two connected parts, a part of the first clearance groove is formed on the side of the positioning member away from the clamping component, the other part of the first clearance groove is formed on the support member, and the first processing port penetrates the portion between the side of the support member facing the clamping component and the bottom wall of the first clearance groove.
[0009] In some embodiments, the positioning member has an installation groove on the side facing the clamping assembly; the positioning assembly further includes a stop member, a clamping member, and an elastic member. The stop member is disposed in the installation groove and extends out of the positioning member on the side facing the clamping assembly. The clamping member is slidably disposed in the installation groove and can move relative to the stop member. The elastic member is disposed in the installation groove, and its two ends are respectively connected to the inner wall of the installation groove and the side of the clamping member away from the stop member. The elastic member is used to drive the clamping member to press the workpiece against the stop member.
[0010] In some embodiments, the clamping assembly includes a clamping member and a guide member. The clamping member is detachably covered by the positioning member, and the guide member is disposed on the side of the clamping member facing the positioning member. The guide member is disposed opposite to the support member and is the second wear-resistant part. The second clearance groove includes two connected parts. One part of the second clearance groove is formed on the side of the clamping member away from the positioning member, and the other part of the second clearance groove is formed on the guide member. The second processing port penetrates the portion between the side of the guide member facing the positioning assembly and the bottom wall of the second clearance groove.
[0011] In some embodiments, the support member has a first limiting groove on the side facing the guide member, and the guide member has a second limiting groove on the side facing the support member. The second limiting groove and the first limiting groove are disposed opposite to each other, and the first limiting groove and the second limiting groove are respectively used to cooperate with the structural limiting mechanism on both sides of the end to be ground.
[0012] In some embodiments, the positioning component has a limiting portion on the side facing the clamping component, and the clamping component has a limiting mating portion on the side facing the positioning component. The limiting mating portion and the limiting portion are inserted into each other to position the clamping component relative to the positioning component.
[0013] In some embodiments, the grinding fixture further includes a locking member that passes through the clamping assembly and is connected to the positioning assembly, or the locking member passes through the positioning assembly and is connected to the clamping assembly.
[0014] In some embodiments, the positioning component includes a first cutting face located at the first machining port, the first cutting face being disposed around the first machining port, and the clamping component includes a second cutting face located at the second machining port, the second cutting face being disposed around the second machining port. The shapes of the first cutting face and the second cutting face are both arc-shaped to conform to the shape of the workpiece's grinding edge.
[0015] In some embodiments, both the first clearance groove and the second clearance groove are used to allow the grinding wheel to pass through, so that the grinding wheel grinds the cutting edge of the workpiece.
[0016] The grinding fixture of this embodiment features a clamping component detachably mounted on a positioning component, with a positioning space between the clamping and positioning components for easy workpiece clamping. By providing a first and a second machining opening on the positioning and clamping components respectively for the workpiece's grinding end to extend out, and by providing a first and a second clearance groove on the positioning and clamping components respectively for the grinding wheel to pass through and grind both sides of the workpiece's cutting edge, this grinding fixture only requires one clamping and positioning of the workpiece to grind both sides of the cutting edge. This avoids repeated clamping that could cause positional deviations in the workpiece's grinding portion. After the workpiece's cutting edge is ground, the difference in grinding depth between the two sides is small, the cutting edge depth meets the tolerance median, and the cutting edge profile exhibits good consistency and high symmetry, thereby improving the precision of the workpiece grinding. In addition, the positioning and clamping components shield the parts of the workpiece that do not need to be ground. The first and second relief grooves allow the grinding wheel to grind the cutting edge to be ground along the extension direction of the first and second relief grooves. The first and second processing ports allow the grinding wheel to grind the part of the end to be ground that is exposed at the first and second processing ports. This reduces the probability of the coating at the cutting edge of the cutting edge being over-ground, ensuring the consistency of the angle and contour of the cutting edge after grinding, and further improving the accuracy of grinding the workpiece.
[0017] This application also provides a grinding mechanism, including a base, a clamping assembly, and a grinding fixture as described above. The grinding fixture is movably inserted into the base, and the clamping assembly is disposed on the base and located on one side of the grinding fixture. The clamping assembly is used to clamp the grinding fixture onto the base.
[0018] The grinding mechanism of this application improves the precision of grinding workpieces by setting grinding fixtures. By setting the grinding fixtures to be movably inserted into the base and setting the clamping components to press the grinding fixtures to the base, it is easy to quickly change the grinding fixtures. Furthermore, when the grinding wheel is grinding the edge to be ground on the workpiece, another set of grinding fixtures can be used to clamp and position another workpiece outside the machine, reducing the waiting time for changing workpieces and improving the efficiency of grinding workpieces.
[0019] In some embodiments, the base has a fixing groove extending in a vertical direction, and the grinding fixture is movably inserted into the fixing groove; the clamping assembly includes a clamping drive and a pressure head, the clamping drive is disposed on the base and located on one side of the fixing groove, the pressure head is drivenly connected to the clamping drive, the pressure head extends into the fixing groove, and the clamping drive is used to drive the pressure head to clamp the grinding fixture into the fixing groove. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural diagram of the grinding fixture provided in the embodiments of this application.
[0021] Figure 2 for Figure 1 A three-dimensional structural diagram of the grinding fixture from another angle.
[0022] Figure 3 for Figure 1 The diagram shows a three-dimensional structure of the workpiece to which the grinding fixture is adapted.
[0023] Figure 4 for Figure 1 The diagram shows the exploded structure of the grinding fixture.
[0024] Figure 5 for Figure 1 An exploded view of the positioning components in the grinding fixture shown.
[0025] Figure 6 for Figure 1 A three-dimensional structural diagram of the clamping components in the grinding fixture shown.
[0026] Figure 7 This is a three-dimensional structural diagram of the grinding mechanism provided in the embodiments of this application.
[0027] Figure 8 To and Figure 7 The diagram shows the grinding path of the grinding wheel adapted to the grinding mechanism when grinding the workpiece.
[0028] Explanation of main component symbols
[0029] Grinding mechanism 1000, grinding fixture 100, positioning assembly 10, first clearance groove 101, first bottom wall 1011, first end 1011a, second end 1011b, first machining port 102, first cutting edge 103, positioning element 11, first assembly groove 111, mounting groove 112, limiting part 113, first threaded hole 114, support element 12, first positioning groove 121, positioning protrusion 1211, first limiting groove 122, first wear-resistant part 13, blocking element 14, clamping element 15, elastic element 16, clamping assembly 20, second clearance groove 201, second bottom wall 2011, second machining port 202. Second cutting edge 203, clamping member 21, second assembly groove 211, limiting mating part 212, clearance groove 213, second threaded hole 214, guide member 22, second positioning groove 221, second limiting groove 222, second wear-resistant part 23, positioning space 30, locking member 40, workpiece 500, end to be ground 510, first detection surface 5101, second detection surface 5102, third detection surface 5103, cutting edge to be ground 520, cutting edge 5201, limiting protrusion 530, insertion hole 540, base 600, fixing groove 610, clamping assembly 700, clamping drive member 710, pressure head 720, grinding wheel 800. Detailed Implementation
[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.
[0031] In the description of this application, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings and are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, it should be noted that "a plurality of" means two or more, unless otherwise explicitly and specifically defined.
[0032] In the description of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows communication between components; it can be a direct connection or an indirect connection through an intermediate medium; it can be the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. The following will describe some embodiments of this application in detail with reference to the accompanying drawings.
[0033] Please see Figure 1 , Figure 2 and Figure 3 This application provides a grinding fixture 100 for clamping a workpiece 500 to be ground. The workpiece 500 can be a medical cutting tool, a machining tool, etc., and the grinding process on the workpiece 500 can be polishing, sharpening, etc. For ease of understanding, this application uses the workpiece 500 as a medical stapler cutting blade, and the grinding process on the workpiece 500 is described as sharpening the edge 520 to be ground. Obviously, this is not a limitation of this application.
[0034] Please see Figure 1 , Figure 2 and Figure 3 In this embodiment, the grinding fixture 100 includes a positioning component 10 and a clamping component 20. The clamping component 20 is detachably mounted on the positioning component 10, and a positioning space 30 is provided between the positioning component 10 and the clamping component 20. The positioning space 30 is used to position the workpiece 500.
[0035] The positioning component 10 has a first clearance groove 101 and a first processing opening 102. The first clearance groove 101 is located on the side of the positioning component 10 opposite to the clamping component 20. The first processing opening 102 penetrates the positioning component 10 and communicates with the first clearance groove 101. The clamping component 20 has a second clearance groove 201 and a second processing opening 202. The second clearance groove 201 is located on the side of the clamping component 20 opposite to the positioning component 10. The second processing opening 202 penetrates the clamping component 20 and communicates with the second clearance groove 201. The second processing opening 202 and the first processing opening 102 are arranged opposite to each other. It can be understood that "opposite to each other" means that at least part of the edge of the second processing opening 202 and the edge of the first processing opening 102 coincide in the projection of the positioning component 10 and the clamping component 20 in the stacking direction. The first processing port 102 and the second processing port 202 are used to communicate with the positioning space 30. The first processing port 102 and the second processing port 202 are also used to allow the grinding end 510 of the workpiece 500 to extend out.
[0036] In one application scenario (such as) Figure 8 As shown, when grinding workpiece 500, workpiece 500 is first positioned in positioning space 30, and the end 510 to be ground of workpiece 500 extends out of the first machining port 102 and the second machining port 202. Then, grinding wheel 800 moves through the first clearance groove 101 and the second clearance groove 201 to the first machining port 102 and the second machining port 202 respectively to grind both sides of the cutting edge 5201 of the cutting edge 520 to be ground of workpiece 500.
[0037] Since the positioning component 10 and the clamping component 20 are respectively provided with a first processing port 102 and a second processing port 202 for the end 510 of the workpiece 500 to be ground to extend out, and the positioning component 10 and the clamping component 20 are respectively provided with a first clearance groove 101 and a second clearance groove 201 for the grinding wheel 800 to grind both sides of the cutting edge 5201 of the workpiece 500, the grinding fixture 100 of this embodiment only needs to clamp and position the workpiece 500 once to grind both sides of the cutting edge 5201 of the workpiece 500. This avoids repeated clamping and causes a deviation in the position of the part of the workpiece 500 to be ground. After the grinding of the cutting edge 5201 of the workpiece 500 is completed, the difference in grinding depth between the two sides of the cutting edge 5201 is small, the depth of the cutting edge 5201 meets the tolerance median value, and the contour of the cutting edge 5201 has good consistency and high symmetry, thereby improving the accuracy of grinding the workpiece 500.
[0038] In addition, the positioning component 10 and the clamping component 20 shield the parts of the workpiece 500 that do not need to be ground. The first clearance groove 101 and the second clearance groove 201 are provided so that the grinding wheel 800 can grind the cutting edge 520 to be ground along the extension direction of the first clearance groove 101 and the second clearance groove 201. The first processing port 102 and the second processing port 202 are provided so that the grinding wheel 800 can grind the part of the end 510 to be ground that is exposed in the first processing port 102 and the second processing port 202. This reduces the probability of the coating (not shown) at the cutting edge 5201 of the cutting edge 520 to be ground being over-ground, ensuring the angular consistency of the cutting edge 5201 of the cutting edge 520 after grinding, and further improving the accuracy of grinding the workpiece 500. The grinding fixture 100 can be widely used in the manufacturing process of cutting blades for medical abdominal anastomosis devices. By introducing this grinding fixture 100 and using it in conjunction with precision CNC tool grinding equipment, off-machine clamping can be achieved, providing efficient interchangeable clamping of the cutting blade, high repeatability and positioning accuracy, thereby ensuring a high degree of consistency in the shape and position accuracy of the product's cutting edge, as well as the stability of the contour quality in mass production.
[0039] In this embodiment, the coating at the cutting edge 5201 of the workpiece 500 is a Teflon coating, which improves biocompatibility and reduces friction and adhesion. In other embodiments, the coating at the cutting edge 5201 of the workpiece 500 may be made of other materials, and this application does not specifically limit this. Ensuring protection of the Teflon coating on the product surface, this solution is applicable to the positioning and clamping of all abdominal cutting knife sharpening processes.
[0040] In this embodiment, both the first clearance groove 101 and the second clearance groove 201 are used to allow the grinding wheel 800 to pass through, so that the grinding wheel 800 grinds the cutting edge 520 of the workpiece 500. Since the first clearance groove 101 and the second clearance groove 201 guide the grinding wheel 800 when grinding the cutting edge 520, the angle consistency of the cutting edge 5201 of the cutting edge 520 of the workpiece 500 after grinding is improved, and the coating at the cutting edge 5201 can be avoided from being over-grinded, thereby improving the accuracy of grinding the workpiece 500.
[0041] In this embodiment, the first clearance groove 101 and the second clearance groove 201 are symmetrically arranged relative to the positioning space 30. This results in greater consistency in the angle at which the grinding wheel 800 grinds the workpiece 500's cutting edge 520 through the first clearance groove 101 and the second clearance groove 201, thus increasing the symmetry of both sides of the cutting edge 5201. Furthermore, it facilitates the grinding equipment (not shown) that drives the grinding wheel 800 to smoothly pass through the first clearance groove 101 and the second clearance groove 201 under the control of a simple control program.
[0042] In this embodiment, the difference between the width of the first clearance groove 101 and the width of the second clearance groove 201 and the width of the grinding wheel 800 is greater than or equal to 1 mm. In this way, interference between the grinding wheel 800 and the first clearance groove 101 and the second clearance groove 201 can be avoided when the grinding wheel 800 passes through the first clearance groove 101 and the second clearance groove 201.
[0043] Please refer to the reference again. Figure 1 , Figure 2 and Figure 3 In this embodiment, the first clearance groove 101 has a first bottom wall 1011, and the second clearance groove 201 has a second bottom wall 2011. Both the first bottom wall 1011 and the second bottom wall 2011 have opposing first ends 1011a and second ends 1011b. The first processing port 102 is provided corresponding to the first end 1011a of the first bottom wall 1011, and the first bottom wall 1011 is inclined downwards from its corresponding second end 1011b toward its corresponding first end 1011a. The second processing port 202 is provided corresponding to the first end 1011a of the second bottom wall 2011, and the second bottom wall 2011 is inclined downwards from its corresponding second end 1011b toward its corresponding first end 1011a.
[0044] When the grinding wheel 800 passes through the first clearance groove 101 to grind the cutting edge 5201 of the workpiece 500's cutting edge 520, the grinding wheel 800 enters from the second end 1011b of the first clearance groove 101 and grinds the cutting edge 5201 of the cutting edge 520 at the first processing port 102. When the grinding wheel 800 passes through the second clearance groove 201 to grind the cutting edge 5201 of the workpiece 500's cutting edge 520, the grinding wheel 800 enters from the second end 1011b of the second clearance groove 201 and grinds the cutting edge 5201 of the cutting edge 520 at the second processing port 202.
[0045] By setting the first bottom wall 1011 of the first relief groove 101 and the second bottom wall 2011 of the second relief groove 201 to be inclined, and setting the first processing port 102 to correspond to the first end 1011a of the first bottom wall 1011 and the second processing port 202 to correspond to the first end 1011a of the second bottom wall 2011, after the first bottom wall 1011 and the second bottom wall 2011 guide the grinding wheel 800, the angle of the grinding wheel 800 when grinding the cutting edge 5201 of the grinding blade 520 is less different from the inclination angle of the first bottom wall 1011 and the second bottom wall 2011, thereby improving the consistency of the angle of the cutting edge 5201 of the grinding blade 520 of the workpiece 500 after grinding, and thus improving the accuracy of grinding the workpiece 500.
[0046] In this embodiment, the tilt angle of the first bottom wall 1011 and the second bottom wall 2011 is smaller than the tilt angle of the cutting edge 5201 of the tool. The difference between the tilt angle of the first bottom wall 1011 and the second bottom wall 2011 and the tilt angle of the cutting edge 5201 of the tool is less than 2 degrees, thereby avoiding interference between the grinding wheel 800 and the first bottom wall 1011 and the second bottom wall 2011 when the grinding wheel 800 grinds the cutting edge 5201 of the tool.
[0047] Please refer to the following: Figure 4 , Figure 5 and Figure 6 In this embodiment, the positioning component 10 has a first positioning groove 121 on the side facing the clamping component 20, and the clamping component 20 has a second positioning groove 221 on the side facing the positioning component 10. The second positioning groove 221 is disposed opposite to the first positioning groove 121, and the first positioning groove 121 and the second positioning groove 221 together enclose at least a portion of the positioning space 30. Thus, when the clamping component 20 presses down on the positioning component 10, the first positioning groove 121 and the second positioning groove 221 abut against the periphery of the workpiece 500 to position the workpiece 500, thereby improving the accuracy of positioning the workpiece 500.
[0048] In this embodiment, the positioning space 30 also includes a gap (not shown) located between the clamping component 20 and the positioning component 10, which communicates with the first positioning groove 121 and the second positioning groove 221. In some other embodiments, the positioning space 30 may also be formed solely by the first positioning groove 121 and the second positioning groove 221, and this application does not specifically limit this aspect.
[0049] In this embodiment, there can be multiple positioning spaces 30, and correspondingly, there are also multiple first positioning slots 121 and multiple second positioning slots 221, with each of the multiple first positioning slots 121 and multiple second positioning slots 221 corresponding one-to-one. Thus, the grinding fixture 100 can simultaneously clamp and position multiple workpieces 500, thereby facilitating the simultaneous grinding of the grinding edges 520 of multiple workpieces 500 by multiple grinding wheels 800, and improving the efficiency of grinding the workpieces 500.
[0050] In this embodiment, the bottom of the first positioning groove 121 is also provided with a positioning protrusion 1211, which is used to insert the positioning workpiece 500.
[0051] For example, the workpiece 500 is provided with an insertion hole 540. When the workpiece 500 is positioned in the first positioning groove 121 and the second positioning groove 221, the positioning protrusion 1211 is inserted into the insertion hole 540 to position the workpiece 500.
[0052] Thus, by setting the positioning protrusion 1211 to be inserted into the positioning workpiece 500, the accuracy of positioning workpiece 500 by the positioning part 11 is improved.
[0053] Please refer to the reference again. Figure 4 , Figure 5 and Figure 6 In this embodiment, the portion of the positioning component 10 near the first processing port 102 includes a first wear-resistant portion 13, through which the first processing port 102 passes. The portion of the clamping component 20 near the second processing port 202 includes a second wear-resistant portion 23, through which the second processing port 202 passes.
[0054] Since the grinding wheel 800 grinds the workpiece 500's grinding edge 520 at high frequency, it also grinds the positioning component 10 and the clamping component 20. By setting the first wear-resistant part 13 and the second wear-resistant part 23, it is easier to withstand the high-frequency grinding of the grinding wheel 800, thereby improving the service life of the positioning component 10 and the clamping component 20.
[0055] In this embodiment, the first wear-resistant part 13 and the second wear-resistant part 23 are made of ceramic material. In other embodiments, the first wear-resistant part 13 and the second wear-resistant part 23 may also be made of other wear-resistant materials. This application does not specifically limit this.
[0056] Please refer to the reference again. Figure 4 and Figure 5 In this embodiment, the positioning component 10 includes a positioning element 11 and a support element 12. The clamping component 20 is detachably mounted on the positioning element 11, and the support element 12 is located on the side of the positioning element 11 facing the clamping component 20. The positioning element 11 is a first wear-resistant part 13. The first clearance groove 101 includes two connected parts. One part of the first clearance groove 101 is formed on the side of the positioning element 11 away from the clamping component 20, and the other part of the first clearance groove 101 is formed on the support element 12. The first processing port 102 penetrates the portion between the side of the support element 12 facing the clamping component 20 and the bottom wall of the first clearance groove 101.
[0057] By setting the positioning component 10 to include a positioning element 11 and a support element 12, with the support element 12 being the first wear-resistant part 13, it is convenient to replace the support element 12 when it is damaged. By setting the two parts of the first clearance groove 101 on the positioning element 11 and the support element 12 respectively, it is convenient to process the first clearance groove 101. In addition, since the part of the first clearance groove 101 located on the support element 12 is close to the first processing port 102, the dwell time of the grinding wheel 800 when grinding the grinding edge 520 of the workpiece 500 is relatively long. Therefore, the contact time between the grinding wheel 800 and the part of the first clearance groove 101 located on the support element 12 is relatively long. By setting a part of the first clearance groove 101 on the support element 12, it is beneficial to improve the service life of the first clearance groove 101.
[0058] Please refer to the reference again. Figure 4 and Figure 5 In this embodiment, the positioning member 11 has a first assembly groove 111 on the side facing the clamping assembly 20. The first assembly groove 111 is located at the end of the positioning member 11, and the support member 12 is installed in the first assembly groove 111.
[0059] In this embodiment, the first positioning groove 121 is formed on the side of the support member 12 facing the clamping assembly 20. In some other embodiments, the first positioning groove 121 may also be formed on the side of the positioning member 11 facing the support assembly; this application does not specifically limit this.
[0060] In this embodiment, the positioning member 11 is provided with a mounting groove 112 on the side facing the clamping assembly 20, and the mounting groove 112 is located in the middle of the positioning member 11. The positioning assembly 10 also includes a stop member 14, a clamping member 15, and an elastic member 16. The stop member 14 is disposed in the mounting groove 112 and extends out of the positioning member 11 on the side facing the clamping assembly 20. The clamping member 15 is slidably disposed in the mounting groove 112 and can move relative to the stop member 14. The elastic member 16 can be a spring. The elastic member 16 is disposed in the mounting groove 112, and both ends of the elastic member 16 are respectively connected to the inner wall of the mounting groove 112 and the side of the clamping member 15 away from the stop member 14. The elastic member 16 is used to drive the clamping member 15 to press the workpiece 500 against the stop member 14.
[0061] When the workpiece 500 is placed on the positioning assembly 10, the clamping member 15 is first moved away from the blocking member 14. Then, the workpiece 500 is placed between the clamping member 15 and the blocking member 14, and the workpiece 500 is positioned in the first positioning groove 121. After that, the clamping member 15 is released, and the elastic member 16 drives the clamping member 15 to press the workpiece 500 against the blocking member 14. In this way, the positioning assembly 10 can also clamp and position the workpiece 500, thereby improving the accuracy of positioning the workpiece 500.
[0062] Please refer to the following: Figure 4 and Figure 6 In this embodiment, the clamping assembly 20 includes a clamping member 21 and a guide member 22. The clamping member 21 is detachably mounted on the positioning member 11, and the guide member 22 is located on the side of the clamping member 21 facing the positioning member 11. The guide member 22 is disposed opposite to the support member 12, and the guide member 22 is the second wear-resistant part 23. The second clearance groove 201 includes two connected parts. One part of the second clearance groove 201 is formed on the side of the clamping member 21 away from the positioning member 11, and the other part of the second clearance groove 201 is formed on the guide member 22. The second processing port 202 penetrates the portion between the side of the guide member 22 facing the positioning assembly 10 and the bottom wall of the second clearance groove 201.
[0063] By configuring the clamping assembly 20 to include a clamping member 21 and a guide member 22, with the guide member 22 being the second wear-resistant part 23, it is convenient to replace the guide member 22 when it is damaged. By setting the two parts of the second relief groove 201 on the clamping member 21 and the guide member 22 respectively, it is convenient to process the second relief groove 201. In addition, since the part of the second relief groove 201 located on the guide member 22 is close to the second processing port 202, the dwell time of the grinding wheel 800 when grinding the cutting edge 520 of the workpiece 500 is relatively long. Therefore, the contact time between the grinding wheel 800 and the part of the second relief groove 201 located on the guide member 22 is relatively long. By setting a part of the second relief groove 201 on the guide member 22, it is beneficial to improve the service life of the second relief groove 201.
[0064] Please refer to the reference again. Figure 4 and Figure 6 In this embodiment, the clamping member 21 has a second assembly groove 211 on the side facing the positioning component 10. The second assembly groove 211 is located at the end of the clamping member 21 and is arranged opposite to the first assembly groove 111. The guide member 22 is installed in the second assembly groove 211.
[0065] In this embodiment, the second positioning groove 221 is formed on the side of the guide member 22 facing the positioning component 10. In some other embodiments, the second positioning groove 221 may also be formed on the side of the clamping member 21 facing the positioning component 10, and this application embodiment does not specifically limit this.
[0066] In this embodiment, the clamping member 21 is provided with a relief groove 213 on the side facing the positioning component 10. The relief groove 213 is disposed opposite to the blocking member 14 and is used to avoid the blocking member 14 and the pressing member 15.
[0067] In this embodiment, a first limiting groove 122 is provided on the side of the support member 12 facing the guide member 22, and a second limiting groove 222 is provided on the side of the guide member 22 facing the support member 12. The second limiting groove 222 and the first limiting groove 122 are arranged opposite to each other. The first limiting groove 122 and the second limiting groove 222 are respectively used to cooperate with the structural limiting on both sides of the end to be ground 510.
[0068] For example, such as Figure 3 As shown, both sides of the end 510 to be ground of the workpiece 500 have limiting protrusions 530. When the grinding fixture 100 clamps the workpiece 500, the first limiting groove 122 and the second limiting groove 222 respectively cooperate with the limiting protrusions 530 on both sides of the end 510 to be ground to restrict the movement of the end 510 to be ground.
[0069] Thus, by setting the first limiting groove 122 and the second limiting groove 222 to cooperate with the structural limiting parts on both sides of the end to be ground 510, the accuracy of the alignment between the grinding edge 520 and the first processing port 102 and the second processing port 202 is improved, thereby improving the precision of grinding the workpiece 500.
[0070] In this embodiment, the first limiting groove 122 and the second limiting groove 222 can be appropriately separated from the limiting protrusions 530 on both sides of the grinding end 510 of the workpiece 500, but the clearance distance is less than or equal to 0.05mm, thereby ensuring the positioning accuracy of the first limiting groove 122 and the second limiting groove 222.
[0071] In this embodiment, there can be multiple limiting protrusions 530 on both sides of the grinding end 510 of the workpiece 500, and correspondingly, there are also multiple first limiting grooves 122 and second limiting grooves 222.
[0072] In other embodiments, the positioning component 10 and the clamping component 20 are not limited to the limiting fit structure of the workpiece 500 end 510 to be ground, except for the first limiting groove 122 and the second limiting groove 222. The specific fit structure can be changed according to the structure of the workpiece 500 end 510 to be ground. This application embodiment does not make specific limitations in this regard.
[0073] Please refer to the reference again. Figure 4 and Figure 6 In this embodiment, the positioning component 10 has a limiting part 113 on the side facing the clamping component 20, and the clamping component 20 has a limiting mating part 212 on the side facing the positioning component 10. The limiting mating part 212 and the limiting part 113 are inserted and mated to position the clamping component 20 relative to the positioning component 10.
[0074] For example, the limiting part 113 is a positioning pin inserted into the side of the positioning member 11 facing the clamping component 20, and the limiting mating part 212 is a positioning hole opened on the clamping member 21. The positioning pin and the positioning hole are engaged to position the clamping component 20 relative to the positioning component 10.
[0075] Thus, by providing a limiting part 113 and a limiting mating part 212 on the positioning component 10 and the clamping component 20 respectively, the position of the clamping component 20 relative to the positioning component 10 is positioned, thereby improving the accuracy of the clamping component 20 pressing on the positioning component 10.
[0076] In some other embodiments, the limiting part 113 may also be a positioning hole, and correspondingly, the limiting mating part 212 may be a positioning pin. This application embodiment does not specifically limit this.
[0077] Please refer to the reference again. Figure 4 and Figure 6 In this embodiment, the positioning component 10 includes a first cutting surface 103 located at the first processing port 102, and the first cutting surface 103 is disposed around the first processing port 102. The clamping component 20 includes a second cutting surface 203 located at the second processing port 202, and the second cutting surface 203 is disposed around the second processing port 202. The shapes of the first cutting surface 103 and the second cutting surface 203 are both arc-shaped to conform to the shape of the grinding edge 520 of the workpiece 500. By setting the first cutting surface 103 and the second cutting surface 203, when the grinding wheel 800 grinds the grinding edge 520 of the workpiece 500, it grinds the grinding edge 520 according to the shapes of the first cutting surface 103 and the second cutting surface 203, thereby improving the symmetry and shape consistency of the grinding edge 520 after grinding, avoiding over-grinding, and thus improving the accuracy of grinding the workpiece 500.
[0078] In this embodiment, when the grinding fixture 100 clamps and positions the workpiece 500, the distance between the outer periphery of the grinding edge 520 of the workpiece 500 and the first cutting surface 103 ranges from 0.2mm to 0.4mm, and the distance between the outer periphery of the grinding edge 520 of the workpiece 500 and the second cutting surface 203 also ranges from 0.2mm to 0.4mm, with a preferred value of 0.3mm within these ranges. Thus, when the grinding wheel 800 grinds the grinding edge 520 of the workpiece 500, the coating near the cutting edge 5201 of the grinding edge 520 is effectively protected, over-grinding is avoided, and burr generation is reduced, thereby improving the precision of grinding the workpiece 500.
[0079] Please refer to the reference again. Figure 3 In this embodiment, the grinding fixture 100 also includes a locking member 40, which passes through the clamping assembly 20 and is connected to the positioning assembly 10.
[0080] For example, the positioning member 11 has a first threaded hole 114, the clamping member 21 has a second threaded hole 214, and the locking member 40 can be a bolt. The locking member 40 passes through the second threaded hole 214 and the first threaded hole 114 to lock the clamping assembly 20 and the positioning assembly 10.
[0081] By setting the locking element 40 to lock the clamping component 20 and the positioning component 10, the firmness and stability of the grinding fixture 100 in clamping and positioning the workpiece 500 are improved.
[0082] In some other embodiments, the locking member 40 may also be inserted through the positioning component 10 and connected to the clamping component 20, which can also lock the clamping component 20 and the positioning component 10. This application does not specifically limit this embodiment.
[0083] Please refer to the reference again. Figure 3 In this embodiment, the end 510 of the workpiece 500 to be ground has a first detection surface 5101, a second detection surface 5102, and a third detection surface 5103. The first detection surface 5101 is the end face of the end 510 to be ground, the second detection surface 5102 is the side surface near the limiting protrusion 530 of the first processing port 102 or the second processing port 202, and the third detection surface 5103 is the side surface of the end 510 to be ground that abuts against the first bottom wall 1011 or the second bottom wall 2011. When the grinding equipment drives the grinding wheel 800 to grind the cutting edge 520 of the workpiece 500, the grinding equipment can use a probe (not shown) to detect the first detection surface 5101, the second detection surface 5102, and the third detection surface 5103 of the workpiece 500, thereby obtaining the processing coordinates and performing corresponding compensation according to the processing coordinates, thereby improving the accuracy of grinding the workpiece 500.
[0084] In summary, the grinding fixture 100 of this application embodiment is detachably covered by the positioning component 10 by setting the clamping component 20, and there is a positioning space 30 for positioning the workpiece 500 between the clamping component 20 and the positioning component 10, which facilitates clamping and positioning the workpiece 500. By providing a first processing port 102 and a second processing port 202 on the positioning component 10 and the clamping component 20 respectively for the end 510 of the workpiece 500 to be ground to extend out, and by providing a first clearance groove 101 and a second clearance groove 201 on the positioning component 10 and the clamping component 20 respectively for the grinding wheel 800 to grind both sides of the cutting edge 5201 of the workpiece 500, the grinding fixture 100 of this embodiment only needs to clamp and position the workpiece 500 once to grind both sides of the cutting edge 5201 of the workpiece 500. This avoids repeated clamping that could cause a positional deviation in the part of the workpiece 500 to be ground. After the grinding of the cutting edge 5201 of the workpiece 500 is completed, the difference in grinding depth between the two sides of the cutting edge 5201 is small, the depth of the cutting edge 5201 meets the tolerance median value, and the contour of the cutting edge 5201 has good consistency and high symmetry, thereby improving the accuracy of grinding the workpiece 500. In addition, the positioning component 10 and the clamping component 20 shield the parts of the workpiece 500 that do not need to be ground. The first relief groove 101 and the second relief groove 201 are provided so that the grinding wheel 800 can perform grinding on the cutting edge 520 to be ground along the extension direction of the first relief groove 101 and the second relief groove 201. The first processing port 102 and the second processing port 202 are provided so that the grinding wheel 800 can perform grinding on the part of the end 510 to be ground that is exposed in the first processing port 102 and the second processing port 202. This reduces the probability of the coating at the cutting edge 5201 of the cutting edge 520 being over-ground, ensuring the angular consistency and contour consistency of the cutting edge 5201 of the cutting edge 520 after grinding, and further improving the accuracy of grinding the workpiece 500.
[0085] Please refer to the following: Figure 7 and Figure 8 This application also provides a grinding mechanism 1000, applied to a grinding machine (not shown). The grinding mechanism 1000 includes a base 600, a clamping assembly 700, and a grinding fixture 100 as described above. The grinding fixture 100 is movably inserted into the base 600, and the clamping assembly 700 is disposed on the base 600 and located on one side of the grinding fixture 100. The clamping assembly 700 is used to clamp the grinding fixture 100 to the base 600.
[0086] Exemplarily, the grinding equipment includes a motion platform (not shown), a dressing motor (not shown), a dressing wheel (not shown), a grinding spindle (not shown), a grinding wheel 800, and a probe (not shown). A base 600 is mounted on the motion platform and moves under its drive. The grinding wheel 800 can be a grinding wheel, and is mounted on the grinding spindle. The grinding spindle drives the grinding wheel 800 to grind the cutting edge 520 of the workpiece 500, which is clamped in the grinding fixture 100. The probe is mounted on the grinding spindle, and the grinding spindle drives the probe to detect the first detection surface 5101, the second detection surface 5102, and the third detection surface 5103 of the workpiece 500, thereby obtaining the machining coordinates and performing corresponding compensation based on the machining coordinates. The dressing motor is located on the motion platform. The dressing wheel is connected to the dressing motor drive. The dressing motor drives the dressing wheel to automatically dress the grinding wheel 800 to improve the grinding efficiency and quality of the grinding wheel 800.
[0087] The grinding mechanism 1000 of this application improves the accuracy of grinding the workpiece 500 by setting a grinding fixture 100. By setting the grinding fixture 100 to be movably inserted into the base 600 and setting a clamping assembly 700 to clamp the grinding fixture 100 to the base 600, it is easy to quickly change the grinding fixture 100. Furthermore, when the grinding wheel 800 is grinding the cutting edge 520 of the workpiece 500, another set of grinding fixtures 100 can be used to clamp and position another workpiece 500 outside the machine, reducing the waiting time for changing the workpiece 500 and improving the efficiency of grinding the workpiece 500.
[0088] Please refer to the reference again. Figure 7 and Figure 8 In this embodiment, the base 600 has a fixing groove 610 extending vertically, and the grinding jig 100 is movably inserted into the fixing groove 610. The clamping assembly 700 includes a clamping drive 710 and a clamping head 720. The clamping drive 710 is disposed on the base 600 and located on one side of the fixing groove 610. The clamping drive 710 can be a telescopic cylinder. The clamping head 720 is drivenly connected to the clamping drive 710 and extends into the fixing groove 610. The clamping drive 710 drives the clamping head 720 to clamp the grinding jig 100 into the fixing groove 610. This improves the convenience of replacing the grinding jig 100 and the convenience of clamping the grinding jig 100 onto the base 600. In addition, by inserting the grinding fixture 100 vertically into the fixing groove 610, the abrasive particles and dust generated by grinding the workpiece 500 can be easily washed away by the grinding oil (not shown), reducing the chance of abrasive particles and dust damaging the outer surface of the workpiece 500.
[0089] In this embodiment, the base 600 may have multiple fixing slots 610, which are spaced apart. The clamping components 700 may also be multiple, each corresponding to one of the fixing slots 610. This facilitates the simultaneous fixing of multiple grinding fixtures 100 holding workpieces 500, thereby improving the efficiency of grinding the workpieces 500.
[0090] In this embodiment, when there are multiple fixing slots 610, a sufficient safety distance needs to be reserved between every two adjacent fixing slots 610 to facilitate the passage of the grinding wheel 800.
[0091] When the grinding wheel 800 grinds the grinding edges 520 of multiple workpieces 500, the grinding spindle first moves the grinding wheel 800 directly above the corresponding grinding fixture 100. Then, at a preset tilt angle, the grinding wheel 800 passes through the first clearance groove 101 to grind one side of the grinding edge 520. Afterward, it returns to the position directly above the corresponding grinding fixture 100 and, at the same tilt angle, passes through the second clearance groove 201 to grind the other side of the grinding edge 520. Once both sides of the grinding edge 520 of one workpiece 500 are processed, the grinding spindle moves the grinding wheel 800 directly above another grinding fixture 100, and the above processing steps are repeated until all the grinding edges 520 of all workpieces 500 are processed. Two grinding fixtures 100 can be mounted on the machine at a time, allowing for the simultaneous grinding of four products. Meanwhile, during the grinding process, two other grinding fixtures 100 can be prepared externally and the forming grinding wheel can be positioned for grinding.
[0092] It will be apparent to those skilled in the art that this application is not limited to the details of the exemplary embodiments described above, and that this application can be implemented in other specific forms without departing from the spirit or essential characteristics of this application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of this application is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be embraced within this application.
[0093] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this application without departing from the spirit and scope of the technical solutions of this application.
Claims
1. A grinding fixture, characterized in that, The device includes a positioning component and a clamping component. The clamping component is detachably mounted on the positioning component. A positioning space exists between the positioning component and the clamping component for positioning a workpiece. The positioning component has a first clearance groove and a first machining port. The first clearance groove is located on the side of the positioning component opposite to the clamping component. The first machining port penetrates the positioning component and communicates with the first clearance groove. The clamping component has a second clearance groove and a second machining port. The second clearance groove is located on the side of the clamping component opposite to the positioning component. The second machining port penetrates the clamping component and communicates with the second clearance groove. The second machining port is opposite to the first machining port. The first machining port and the second machining port communicate with the positioning space and also allow the end of the workpiece to be ground to extend out.
2. The grinding fixture as described in claim 1, characterized in that, The first clearance groove has a first bottom wall, and the second clearance groove has a second bottom wall. Both the first bottom wall and the second bottom wall have a first end and a second end. The first processing port is provided corresponding to the first end of the first bottom wall, and the first bottom wall is inclined downward from the corresponding second end toward the corresponding first end. The second processing port is provided corresponding to the first end of the second bottom wall, and the second bottom wall is inclined downward from the corresponding second end toward the corresponding first end.
3. The grinding fixture as described in claim 1, characterized in that, The positioning component has a first positioning groove on one side facing the clamping component, and the clamping component has a second positioning groove on one side facing the positioning component. The second positioning groove is arranged opposite to the first positioning groove, and the first positioning groove and the second positioning groove together enclose at least part of the positioning space.
4. The grinding fixture as described in claim 1, characterized in that, The portion of the positioning component near the first processing port includes a first wear-resistant portion, through which the first processing port passes. The portion of the clamping component near the second processing port includes a second wear-resistant portion, through which the second processing port passes.
5. The grinding fixture as described in claim 4, characterized in that, The positioning component includes a positioning element and a support element. The clamping component is detachably covered by the positioning element. The support element is located on the side of the positioning element facing the clamping component. The positioning element is the first wear-resistant part. The first clearance groove includes two connected parts. One part of the first clearance groove is opened on the side of the positioning element away from the clamping component. The other part of the first clearance groove is opened on the support element. The first processing port penetrates the part between the side of the support element facing the clamping component and the bottom wall of the first clearance groove.
6. The grinding fixture as described in claim 5, characterized in that, The positioning member also has an installation groove on the side facing the clamping assembly; the positioning assembly further includes a stop member, a clamping member, and an elastic member. The stop member is disposed in the installation groove and extends out of the positioning member on the side facing the clamping assembly. The clamping member is slidably disposed in the installation groove and can move relative to the stop member. The elastic member is disposed in the installation groove, and its two ends are respectively connected to the inner wall of the installation groove and the side of the clamping member away from the stop member. The elastic member is used to drive the clamping member to press the workpiece against the stop member.
7. The grinding fixture as described in claim 5, characterized in that, The clamping assembly includes a clamping member and a guide member. The clamping member is detachably covered by the positioning member. The guide member is located on the side of the clamping member facing the positioning member and is disposed opposite to the support member. The guide member is the second wear-resistant part. The second clearance groove includes two connected parts. One part of the second clearance groove is opened on the side of the clamping member away from the positioning member, and the other part of the second clearance groove is opened on the guide member. The second processing port penetrates the part between the side of the guide member facing the positioning assembly and the bottom wall of the second clearance groove.
8. The grinding fixture as described in claim 7, characterized in that, The support member has a first limiting groove on the side facing the guide member, and the guide member has a second limiting groove on the side facing the support member. The second limiting groove and the first limiting groove are arranged opposite to each other. The first limiting groove and the second limiting groove are respectively used to cooperate with the structural limiting of the two sides of the end to be ground.
9. The grinding fixture as described in any one of claims 1 to 8, characterized in that, The positioning component has a limiting portion on the side facing the clamping component, and the clamping component has a limiting engagement portion on the side facing the positioning component. The limiting engagement portion and the limiting portion are inserted into each other to position the clamping component relative to the positioning component.
10. The grinding fixture according to any one of claims 1 to 8, characterized in that, The grinding fixture further includes a locking element, which passes through the clamping assembly and is connected to the positioning assembly; or... The locking member passes through the positioning assembly and is connected to the clamping assembly.
11. The grinding fixture according to any one of claims 1 to 8, characterized in that, The positioning component includes a first cutting surface located at the first machining port, the first cutting surface being disposed around the first machining port; the clamping component includes a second cutting surface located at the second machining port, the second cutting surface being disposed around the second machining port; the shapes of the first cutting surface and the second cutting surface are both arc-shaped to conform to the shape of the workpiece's grinding edge.
12. The grinding fixture according to any one of claims 1 to 8, characterized in that, Both the first and second clearance grooves are used to allow the grinding wheel to pass through, so that the grinding wheel can grind the cutting edge of the workpiece.
13. A grinding mechanism, characterized in that, The invention includes a base, a clamping assembly, and a grinding jig as described in any one of claims 1 to 12, wherein the grinding jig is movably inserted into the base, the clamping assembly is disposed on the base and located on one side of the grinding jig, and the clamping assembly is used to clamp the grinding jig onto the base.
14. The grinding mechanism as described in claim 13, characterized in that, The base has a fixed groove extending vertically, and the grinding fixture is movably inserted into the fixed groove; the clamping assembly includes a clamping drive and a pressure head, the clamping drive is disposed on the base and located on one side of the fixed groove, the pressure head is drivenly connected to the clamping drive, the pressure head extends into the fixed groove, and the clamping drive is used to drive the pressure head to clamp the grinding fixture into the fixed groove.