Diamond grinding wheel with high strength and high toughness composite structure
The diamond grinding wheel with a high-strength and high-toughness composite structure solves the problems of insufficient connection reliability and brittle chipping of the abrasive layer, and realizes stable connection and high-precision machining of the grinding wheel under high load.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- GUANGDONG TIANYI SUPERHARD MATERIAL CO LTD
- Filing Date
- 2026-03-02
- Publication Date
- 2026-06-05
AI Technical Summary
Existing diamond grinding wheels have insufficient connection reliability, the material is brittle and prone to chipping, and the wear of the abrasive layer leads to eccentric vibration, affecting machining accuracy and equipment safety.
It adopts a high-strength and high-toughness composite structure, which tightly fits the abrasive layer and the substrate through the connecting mechanism, the buffer mechanism absorbs the impact force, and the compensation mechanism adjusts the eccentric movement in real time, thereby enhancing the connection strength, toughness and stability of the grinding wheel.
It improves the connection strength and safety of the grinding wheel under high load, extends the service life of the abrasive layer, reduces the equipment burden, and ensures high precision and stability in processing.
Smart Images
Figure CN122142913A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of abrasive technology, and particularly relates to a diamond grinding wheel with a high-strength and high-toughness composite structure. Background Technology
[0002] Diamond grinding wheels are a type of superhard material product made of diamond abrasive grains mixed with a binder and bonded to a metal matrix through processes such as hot pressing, sintering, or electroplating. As a core tool for precision grinding and cutting, they are widely used in the processing of hard and brittle materials such as cemented carbide, semiconductor silicon wafers, special ceramics, and aerospace alloys. With the development of modern manufacturing towards high speed and high precision, grinding wheels not only need to have extremely high hardness to ensure cutting efficiency, but also must maintain the stability of the physical structure and impact resistance between the matrix and the abrasive layer under high-speed rotation conditions of tens of thousands of revolutions per minute.
[0003] Existing diamond grinding wheels rely heavily on chemical bonding of the abrasive layer to the substrate. During continuous high-intensity grinding, the interface temperature rises rapidly, causing the bonding agent to soften. This creates a safety hazard as the abrasive layer may detach and fly off under centrifugal force. Since the diamond composite layer is a brittle material, the rigid connection structure of existing diamond grinding wheels lacks the ability to absorb impact kinetic energy. When processing workpieces with uneven hardness or complex shapes, high-frequency vibrations directly act on the abrasive layer, easily causing local micro-cracks to form and rapidly expand, leading to chipping or overall fracture. During use, the abrasive layer experiences localized asymmetrical wear, causing the grinding wheel's center of gravity to deviate from the axis and generate vibration. This eccentric vibration not only affects the grinding precision of the workpiece but also accelerates the damage to the machine tool spindle bearings. Summary of the Invention
[0004] The purpose of this invention is to solve the problems of insufficient connection reliability of existing diamond grinding wheels, brittleness and easy chipping of existing diamond grinding wheel materials, and eccentric vibration caused by the loss of the moving abrasive layer in existing diamond grinding wheels, and to propose a diamond grinding wheel with a high-strength and high-toughness composite structure.
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] A high-strength, high-toughness composite diamond grinding wheel includes a base body with multiple receiving holes on its outer wall around its axis, multiple operating grooves on its side wall around its axis, and multiple abrasive layers around its axis on the outside of the base body. A connecting mechanism includes multiple contact blocks arranged around the axis of the receiving holes, which connect the base body and the abrasive layers by tightly fitting the outer wall of the contact blocks to the inner wall of the outer wall of the abrasive layer tube. A buffering mechanism includes multiple fixed seats arranged around the axis of the base body at the edges of the side walls of the base body. Sliding seats are provided at corresponding positions on both sides of the abrasive layer's side walls, absorbing impact forces through sliding relative to the fixed seats. A compensation mechanism includes a compensation ring located at the center of the base body, which self-compensates for the eccentric movement tendency caused by the wear of the abrasive layers through expansion and contraction.
[0007] As a further description of the above technical solution:
[0008] The connecting mechanism also includes a connecting seat, with multiple connecting seats respectively disposed in corresponding receiving grooves and limiting grooves. Multiple limiting grooves are formed around the axis of the connecting seat on the outer wall of the connecting seat, and the outer wall of the contact block is slidably connected to the inner wall of the limiting groove.
[0009] As a further description of the above technical solution:
[0010] The connecting mechanism also includes a movable column, which is located inside the connecting seat, and connecting rods. Multiple connecting rods are arranged around the axis of the movable column at the top of the movable column, with one end of each connecting rod contacting the top of the contact block.
[0011] As a further description of the above technical solution:
[0012] The connecting mechanism also includes a threaded post, the top end of which is connected to the bottom end of a movable post, the bottom end of which passes through the inner wall of the receiving hole, and a knob, one side of which is connected to the bottom end of the threaded post.
[0013] As a further description of the above technical solution:
[0014] The connecting mechanism further includes support blocks, with multiple support blocks arranged around the axis of the connecting seat in grooves opened on one side of the connecting seat, and a first spring arranged in a groove on one side of the connecting seat, with the two ends of the first spring connected to the bottom of the support block and the inner wall of the groove at corresponding positions.
[0015] As a further description of the above technical solution:
[0016] The buffer mechanism also includes a sliding groove, which is formed on one side of the outer wall of the fixed seat, and the inner wall of the sliding groove is slidably connected to the outer wall of the sliding seat; a travel groove, which is formed on one side of the outer wall of the sliding seat; and a fixing rod, which passes through the travel groove and has one end embedded in the sliding groove.
[0017] As a further description of the above technical solution:
[0018] The buffer mechanism further includes a floating groove, which is formed on the inner wall of the sliding groove; a floating block, which is disposed in the floating groove and whose top end is embedded in the outer wall of one side of the sliding seat; and a second spring, which is disposed in the floating groove and whose one end is connected to the corresponding position of the outer wall of one side of the floating block and the inner wall of the floating block.
[0019] As a further description of the above technical solution:
[0020] The compensation mechanism also includes a mounting base, which is embedded in the center of the base. The compensation ring is sleeved on the outside of the mounting base. Multiple energy-absorbing grooves are formed around the axis of the compensation ring on the inner wall of the compensation ring.
[0021] As a further description of the above technical solution:
[0022] The compensation mechanism also includes a central shaft, one end of which is connected to the outer wall of one side of the mounting base, and a bushing, which is fitted onto the outside of the central shaft.
[0023] As a further description of the above technical solution:
[0024] The compensation mechanism also includes a linkage sleeve, which is fitted onto one end of the bushing, and multiple moving blocks, which are equidistantly arranged inside the linkage sleeve around its axis.
[0025] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:
[0026] 1. In this invention, by setting a connecting mechanism, the contact block generates radial tension force when it contacts the inner wall of the abrasive layer tube, thereby rigidly locking the abrasive layer tube to the substrate. This does not rely on chemical bonding, preventing the abrasive layer from detaching from the substrate due to heat accumulation, and improving the connection strength and safety of the grinding wheel under high load.
[0027] 2. In this invention, by setting up a buffer mechanism, the relative displacement between the sliding seat and the fixed seat, combined with the damping compression of the second spring, converts the rigid impact force during grinding into elastic energy and dissipates it rapidly, thereby enhancing the impact resistance and toughness of the grinding wheel, extending the service life of the abrasive layer, and reducing costs.
[0028] 3. In this invention, by setting up a compensation mechanism, the energy-absorbing groove in the compensation ring generates local micro-collapse, which, together with the displacement adjustment of the moving block in the linkage sleeve, provides real-time force relief compensation for eccentric vibration, effectively reducing the burden on the main shaft of the equipment, ensuring that the grinding wheel can maintain high precision during practical use, and improving the stability of processing. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the main structure of a diamond grinding wheel with a high-strength and high-toughness composite structure proposed in this invention.
[0030] Figure 2 This is a schematic diagram showing the disassembled structure of a diamond grinding wheel with a high-strength and high-toughness composite structure proposed in this invention.
[0031] Figure 3 This is a schematic diagram of the connection mechanism of a high-strength, high-toughness composite diamond grinding wheel proposed in this invention.
[0032] Figure 4 This is a half-sectional schematic diagram of the connection mechanism of a diamond grinding wheel with a high-strength and high-toughness composite structure proposed in this invention.
[0033] Figure 5 For the present invention Figure 4 A magnified structural diagram of part A in the middle;
[0034] Figure 6 This is a schematic diagram of the buffer mechanism structure of a diamond grinding wheel with a high-strength and high-toughness composite structure proposed in this invention;
[0035] Figure 7 This is a half-sectional schematic diagram of the buffer mechanism of a diamond grinding wheel with a high-strength and high-toughness composite structure proposed in this invention.
[0036] Figure 8 This is a half-sectional schematic diagram of the compensation mechanism of a high-strength, high-toughness composite diamond grinding wheel proposed in this invention.
[0037] Legend: 1. Matrix; 2. Accommodating hole; 3. Abrasive layer; 4. Connecting mechanism; 401. Connecting seat; 402. Limiting groove; 403. Moving column; 404. Threaded column; 405. Knob; 406. Connecting rod; 407. Contact block; 408. Support block; 409. First spring; 5. Operating groove; 6. Buffer mechanism; 601. Fixed seat; 602. Sliding groove; 603. Floating groove; 604. Floating block; 605. Second spring; 606. Sliding seat; 607. Stroke groove; 608. Fixed rod; 7. Compensation mechanism; 701. Mounting seat; 702. Central shaft; 703. Compensation ring; 704. Energy absorption groove; 705. Linkage sleeve; 706. Bushing; 707. Moving block. Detailed Implementation
[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0039] Please see Figures 1-8 This invention provides a technical solution: a high-strength, high-toughness composite diamond grinding wheel, comprising a base 1, with multiple receiving holes 2 formed around its axis on the outer wall of the base 1, multiple operating grooves 5 formed around its axis on the side wall of the base 1, and multiple abrasive layers 3 formed around its axis on the outside of the base 1, a connecting mechanism 4, comprising multiple contact blocks 407 arranged around the axis of the receiving holes 2, the base 1 and the abrasive layers 3 being connected by the outer wall of the contact blocks 407 being tightly fitted to the inner wall of the outer tube of the abrasive layers 3, a buffer mechanism 6, comprising multiple fixed seats 601 arranged around the axis of the base 1 at the edge of the side wall of the base 1, and sliding seats 606 arranged at corresponding positions on both sides of the abrasive layers 3 at the edges of the side walls, the sliding seats 606 absorbing the impact force by sliding relative to the fixed seats 601, and a compensation mechanism 7, comprising a compensation ring 703 arranged at the axis of the base 1, the compensation ring 703 self-compensating for the eccentric movement tendency caused by the wear of the abrasive layers 3 by the extension and contraction of the compensation ring 703.
[0040] The connecting mechanism 4 also includes a connecting seat 401, with multiple connecting seats 401 respectively disposed in corresponding receiving grooves and limiting grooves 402. Multiple limiting grooves 402 are formed around the axis of the connecting seat 401 on the outer wall of the connecting seat 401, and the outer wall of the contact block 407 is slidably connected to the inner wall of the limiting groove 402.
[0041] The connecting mechanism 4 also includes a movable column 403, which is located inside the connecting seat 401, and a connecting rod 406. Multiple connecting rods 406 are arranged around the axis of the movable column 403 at the top of the movable column 403, and one end of the connecting rod 406 contacts the top of the contact block 407.
[0042] The connecting mechanism 4 also includes a threaded post 404, the top end of which is connected to the bottom end of the movable post 403, the bottom end of which is inserted through the inner wall of the receiving hole 2, and a knob 405, one side of which is connected to the bottom end of the threaded post 404.
[0043] The connecting mechanism 4 also includes a support block 408. Multiple support blocks 408 are respectively arranged in a groove opened on one side of the connecting seat 401 around the axis of the connecting seat 401. A first spring 409 is arranged in a groove opened on one side of the connecting seat 401, and the two ends of the first spring 409 are respectively connected to the bottom of the support block 408 and the inner wall of the groove at corresponding positions.
[0044] Specifically: the connecting rod 406 has an L-shaped cross-section. The shorter end of the L-shaped connecting rod 406 is always in contact with the top of the contact block 407. The top of the support block 408 is always in contact with the bottom of the contact block 407. One side of the contact block 407 slides in the limiting groove 402 through the block body. The external thread on the outer wall of the threaded column 404 meshes with the internal thread on the inner wall of the receiving hole 2. In the initial unconnected state, the knob 405 is located near the inner wall of the operating groove 5. The abrasive layer 3 has a tube on the side near the base 1. The tube is inserted into the receiving hole 2. Rotating the knob 405 moves the threaded tube away from the inner wall of the operating groove 5. The threaded tube drives the moving column 403 to move away from the abrasive layer 3. The moving column 403 drives the three connecting rods 406 to move synchronously. The shorter end of the L-shaped connecting rod 406 pushes the contact block 407 downward along the direction of the sliding groove. The bottom of the contact block 407 presses down on the support block 408. The first spring 4 When the 09 is compressed, because the limiting groove 402 is opened along the inclined surface of the connecting seat 401, when the three contact blocks 407 move down synchronously, the diameter of the circle formed by the three contact blocks 407 increases. As the contact blocks 407 move, the outer wall of the contact block 407 adheres to and gradually presses against the inner wall of the abrasive layer 3 tube, so that the abrasive layer 3 and the substrate 1 are connected. This prevents the heat accumulation during the high-intensity operation of the grinding wheel from softening the binder and causing connection failure. It also prevents the abrasive layer 3 from breaking off after connection failure, thus improving the stability of the connection. When the abrasive layer 3 needs to be replaced, the knob 405 is rotated in the opposite direction, and the first spring 409 is released. The first spring 409 pushes the support block 408 through its own elastic force. The support block 408 pushes the contact block 407 upward. The contact block 407 moves upward along the direction of the limiting groove 402, and the diameter of the circle formed by the three contact blocks 407 decreases. The outer wall of the contact block 407 separates from the inner wall of the abrasive layer 3 tube, thus releasing the connection to the abrasive layer 3.
[0045] Please see Figures 6-7 The buffer mechanism 6 also includes a sliding groove 602, which is formed on one side of the outer wall of the fixed seat 601. The inner wall of the sliding groove 602 is slidably connected to the outer wall of the sliding seat 606. A stroke groove 607 is formed on one side of the outer wall of the sliding seat 606. A fixing rod 608 passes through the stroke groove 607, and one end of the fixing rod 608 is embedded in the sliding groove 602.
[0046] The buffer mechanism 6 also includes a floating groove 603, which is formed on the inner wall of the sliding groove 602; a floating block 604, which is disposed in the floating groove 603, with the top end of the floating block 604 embedded in the outer wall of one side of the sliding seat 606; and a second spring 605, which is disposed in the floating groove 603, with one end of the second spring 605 connected to the corresponding positions of the outer wall of one side of the floating block 604 and the inner wall of the floating block 604.
[0047] Specifically, the fixed seat 601 is installed on the side wall of the base 1, and the sliding seat 606 is connected to the corresponding position of the side wall of the abrasive layer 3. When the grinding wheel is working, high-frequency vibration will be generated at the connection between the abrasive layer 3 and the base 1. The vibration pushes the sliding seat 606 to move along the direction of the sliding groove 602. The top of the fixed rod 608 moves from one end of the stroke groove 607 to the other end. The sliding seat 606 drives the floating block 604 to move along the direction of the floating groove 603. The second spring is compressed, and the second spring 605 pushes the floating block 604 in the opposite direction through its own elastic force, so that the sliding seat 606 moves in the opposite direction, thereby offsetting the displacement of the sliding seat 606 caused by the vibration of the abrasive layer 3, absorbing the impact force generated by the vibration, preventing the abrasive layer 3 from brittle fracture due to continuous vibration impact, and improving the toughness of the abrasive layer 3.
[0048] Please see Figure 8 The compensation mechanism 7 also includes a mounting base 701, which is embedded in the center of the base 1. The compensation ring 703 is sleeved on the outside of the mounting base 701. Multiple energy absorption grooves 704 are formed around the axis of the compensation ring 703 on the inner wall of the compensation ring 703.
[0049] The compensation mechanism 7 also includes a central shaft 702, one end of which is connected to the outer wall of one side of the mounting base 701, and a bushing 706, which is fitted onto the outside of the central shaft 702.
[0050] The compensation mechanism 7 also includes a linkage sleeve 705, which is fitted onto one end of the bushing 706, and multiple moving blocks 707, which are equidistantly arranged inside the linkage sleeve 705 around its axis.
[0051] Specifically: The drive shaft of the external device is inserted into the mounting base 701, which is fixedly connected to the base 1. The external device drives the grinding wheel to rotate as a whole through the mounting base 701. During use, the abrasive layer 3 will experience uneven wear, causing the center of gravity to shift and vibrate. When eccentric vibration occurs, the inner wall of the compensation ring 703 is squeezed, the energy absorption groove 704 collapses and absorbs the impact force of the eccentric vibration. The collapsed part of the energy absorption groove 704 pushes outward the bushing 706 and causes the bushing 706 to tilt up relative to the linkage sleeve 705, squeezing the moving block 707. The cross-sectional shape of the moving block 707 is circular. The moving block 707 moves within the linkage sleeve 705 to relieve the pressure and compensate for the compression.
[0052] Working principle: When in use, the operator first aligns the tube on one side of the abrasive layer 3 with the receiving hole 2 and inserts it. After the tube is fully inserted, the operator rotates the knob 405 to connect the abrasive layer 3 with the base 1. After the connection is completed, the operator places the buffer mechanism 6 at the junction of the abrasive layer and the base, and connects the sliding seat 606 and the fixed seat 601 to the corresponding positions of the side wall of the abrasive layer 3 and the side wall of the base 1, respectively. After the connection is completed, the operator connects the entire grinding wheel to the drive shaft of the external equipment and starts the external equipment for grinding.
[0053] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A diamond grinding wheel with a high-strength and high-toughness composite structure, comprising a matrix (1), characterized in that, The outer wall of the substrate (1) is provided with a plurality of receiving holes (2) around its axis, the side wall of the substrate (1) is provided with a plurality of operating grooves (5) around its axis, and the outer side of the substrate (1) is provided with a plurality of abrasive layers (3) around its axis. The connecting mechanism (4) includes multiple contact blocks (407) arranged around the axis of the receiving hole (2), and the substrate (1) and the abrasive layer (3) are connected by the outer wall of the contact block (407) being tightly attached to the inner wall of the outer wall tube of the abrasive layer (3); The buffer mechanism (6) includes multiple fixed seats (601) arranged around the axis of the substrate (1) at the edge of the side wall of the substrate (1). Sliding seats (606) are provided at the corresponding positions of the side wall edges of the abrasive layer (3) and the fixed seats (601). The sliding seats (606) absorb the impact force by sliding relative to the fixed seats (601). The compensation mechanism (7) includes a compensation ring (703) located at the center of the substrate (1), which compensates for the eccentric movement tendency caused by the wear of the abrasive layer (3) by the extension and retraction of the compensation ring (703).
2. The diamond grinding wheel with a high-strength and high-toughness composite structure according to claim 1, characterized in that, The connecting mechanism (4) further includes: Connecting seat (401), and multiple connecting seats (401) are respectively disposed in receiving grooves at corresponding positions; The limiting groove (402) is formed around the axis of the connecting seat (401) on the outer wall of the connecting seat (401), and the outer wall of the contact block (407) is slidably connected to the inner wall of the limiting groove (402).
3. The diamond grinding wheel with a high-strength and high-toughness composite structure according to claim 2, characterized in that, The connecting mechanism (4) further includes: A movable column (403) is disposed inside the connecting seat (401); A connecting rod (406) is provided at the top of the moving column (403) around the axis of the moving column (403), and one end of the connecting rod (406) is in contact with the top of the contact block (407).
4. The diamond grinding wheel with a high-strength and high-toughness composite structure according to claim 3, characterized in that, The connecting mechanism (4) further includes: A threaded column (404) is provided, the top end of which is connected to the bottom end of a movable column (403), and the bottom end of the threaded column (404) is inserted through the inner wall of the receiving hole (2). A knob (405) is connected to the bottom end of a threaded post (404) on one side of its outer wall.
5. A diamond grinding wheel with a high-strength and high-toughness composite structure according to claim 4, characterized in that, The connecting mechanism (4) further includes: Support blocks (408), a plurality of the support blocks (408) are respectively disposed in the grooves opened on one side of the connecting seat (401) around the axis of the connecting seat (401); The first spring (409) is located in a groove on one side of the connecting seat (401), and the two ends of the first spring (409) are respectively connected to the bottom of the support block (408) and the inner wall of the groove.
6. The diamond grinding wheel with a high-strength and high-toughness composite structure according to claim 1, characterized in that, The buffer mechanism (6) further includes: A sliding groove (602) is formed on one side of the outer wall of the fixed seat (601), and the inner wall of the sliding groove (602) is slidably connected to the outer wall of the sliding seat (606). The stroke groove (607) is formed on the outer wall of one side of the sliding seat (606); A fixing rod (608) is inserted into a travel groove (607), and one end of the fixing rod (608) is embedded in a sliding groove (602).
7. A diamond grinding wheel with a high-strength and high-toughness composite structure according to claim 6, characterized in that, The buffer mechanism (6) further includes: A floating groove (603) is formed on the inner wall of the sliding groove (602); A floating block (604) is disposed in a floating groove (603), and the top of the floating block (604) is embedded in the outer wall of one side of the sliding seat (606); The second spring (605) is located in the floating groove (603), and one end of the second spring (605) is connected to the corresponding position of the outer wall of the floating block (604) and the inner wall of the floating block (604).
8. The diamond grinding wheel with a high-strength and high-toughness composite structure according to claim 1, characterized in that, The compensation mechanism (7) also includes: Mounting base (701), the mounting base (701) is embedded in the axis of the base (1), and the compensation ring (703) is sleeved on the outside of the mounting base (701); Energy-absorbing grooves (704), a plurality of said energy-absorbing grooves (704) are formed on the inner wall of the compensation ring (703) around the axis of the compensation ring (703).
9. A diamond grinding wheel with a high-strength and high-toughness composite structure according to claim 8, characterized in that, The compensation mechanism (7) also includes: A central shaft (702), one end of which is connected to the outer wall of one side of the mounting base (701); Bushing (706), which is fitted onto the outside of the central shaft (702).
10. A diamond grinding wheel with a high-strength and high-toughness composite structure according to claim 8, characterized in that, The compensation mechanism (7) also includes: Linkage sleeve (705), wherein the linkage sleeve (705) is sleeved on one end of bushing (706); Motion blocks (707), a plurality of motion blocks (707) are equidistantly arranged inside the linkage sleeve (705) around the axis of the linkage sleeve (705).