An integral sintered grinding disc mold

Abstract

The invention discloses an integrally sintered grinding disc mold, and relates to the technical field of diamond engraving saw blade processing equipment. The invention comprises two side baffles (1), two front baffles (2), a partition group (3), a lower pressure head (4), an upper pressure head (5), and two core rods (6). The two side baffles (1) are arranged relative to each other to form a receiving chamber (7) for receiving a grinding disc substrate. The two front baffles (2) are fixed on both sides of the side baffles (1). The two core rods (6) are arranged on the central axis of the receiving chamber (7). The lower pressure head (4), the partition group (3) and the upper pressure head (5) are arranged in sequence from bottom to top inside the receiving chamber (7). The invention improves the yield rate and product quality of the integrally sintered grinding disc production, ensures the dimensional accuracy of the grinding disc, and reduces energy consumption.

Description

Technical Field

[0001] The invention relates to the technical field of diamond engraving saw blade processing equipment, and more specifically to an integrally sintered grinding disc mould. Background Art

[0002] Diamond cutting blades are mainly composed of two parts: the base and the blade. The base is the main supporting part of the bonded blade, while the blade is the cutting part during use. The blade will be consumed continuously during use, while the base will not. The blade can cut because it contains diamond. Diamond is the hardest substance at present. It rubs and cuts the object to be processed in the blade. The diamond particles are wrapped in metal inside the blade. Diamond grinding discs are widely used for grinding concrete or stone surfaces. Common grinding discs are made by sintering the blade on the grinding disc, grinding the welding surface, and then welding the blade to the surface of the base using high-frequency welding. During the welding process, the high-frequency induction coil needs to be made according to the shape of the grinding disc, which is more troublesome. If the coil is not made well, it will directly affect the welding strength of the blade. Summary of the invention

[0003] The purpose of the present invention is to provide an integral sintered grinding disc mold to solve the problem that the high-frequency induction coil in the welding process of the prior art needs to be made according to the shape of the grinding disc, which is relatively troublesome. If the coil is not made well, the welding strength of the cutter head will be directly affected.

[0004] In order to achieve the above-mentioned purpose, the present invention specifically adopts the following technical solutions:

[0005] An integral sintered grinding wheel mold comprises two side baffles, two front baffles, a partition group, a lower pressure head, an upper pressure head, and two core rods. The two side baffles are arranged relative to each other to form a accommodating chamber for accommodating a grinding wheel substrate. The two front baffles are fixed on both sides of the side baffles. The two core rods are arranged on the central axis of the accommodating chamber. The lower pressure head, the partition group and the upper pressure head are arranged in sequence inside the accommodating chamber from bottom to top.

[0006] Preferably, the partition plate group includes 10 partition plates, which are evenly distributed in the accommodating chamber in a radial pattern with the central axis of the accommodating chamber as the center, and both ends of the partition plates are arc-shaped, and the arcs at both ends are concentric arcs of R39 and R15.

[0007] Preferably, a semi-cylindrical groove is provided at the center of the side baffle, and the diameter of the semi-cylindrical groove is ф78.

[0008] Preferably, the upper pressure head comprises 10 sector-shaped blocks with the same appearance, the cross-sectional angle of the sector-shaped blocks is 36°, and the two arc-shaped edges of the sector-shaped blocks are concentric arcs of R15 and R39.

[0009] Preferably, the side baffle, the front baffle, the partition assembly, the lower pressure head, the upper pressure head, and the two core rods are all made of high-strength graphite that has been processed through three-impregnation and four-baking processes.

[0010] The beneficial effects of the present invention are as follows:

[0011] 1. The common grinding disc is to sinter the blade on the grinding disc, grind the welding surface, and then weld the blade to the surface of the substrate by high-frequency welding. During the welding process, the high-frequency induction coil needs to be made according to the shape of the grinding disc, which is troublesome. If the coil is not made well, it will directly affect the welding strength of the blade. To solve this problem, this device uses a special sintering mold for the integral sintered grinding disc. This design uses cold pressing of the blade and directly puts it in the hot pressing mold together with the substrate for sintering. The small partition between the blades on the mold is determined by milling grooves on the substrate, and the small partition is directly inserted into the groove on the substrate. In addition, several countersunk holes are drilled on the collective to increase the bonding force between the blade and the substrate and improve the bonding strength. After sintering, the blade is easy to be combined with the substrate. This saves the welding sheet and flux consumed by welding, reduces the process, saves costs, and avoids the impact of high-frequency welding. At the same time, this device can assist the cold-pressed grinding disc in high-pressure sintering, ensuring that it maintains a stable shape during the high-pressure sintering process, preventing it from cracking and deforming due to high pressure, and improving the yield rate of the overall sintered grinding disc. At the same time, high-pressure sintering can also greatly shorten the firing time, and a single sintering only takes 10 minutes, effectively saving energy. When the device is working, the two side baffles are installed facing each other and placed on the lower pressure head, and then the two front baffles are clamped on both sides of the side baffles, and the first integral sintered grinding disc is placed in the accommodating chamber with the grinding disc head facing upward. After fixing, the first core rod is inserted into the central axis of the integral sintered grinding disc, and the partition group is installed. Then, the grinding disc head of the second integral sintered grinding disc is installed upward on the partition group, and the second core rod and the upper pressure head are placed in sequence. After the entire mold is installed, all surfaces of the integral sintered grinding disc can be protected, and finally it is placed in the vacuum hot pressing sintering machine for sintering, and during the sintering process, the integral sintered grinding disc is provided with all-round shaping support to prevent it from cracking due to high pressure and the like, thereby improving the production yield of the integral sintered grinding disc, product size accuracy and product quality, and reducing energy consumption.

[0012] 2. Since the integral sintered grinding disc blades are radially installed on the grinding disc blade body, the upper surface and the grinding disc blade body are uneven. When the mold is fixed, if an ordinary clip mold is used, the mold cannot be in close contact with the grinding disc blade due to the gap in the middle. During high-pressure sintering, the grinding disc blade in the middle of the gap is still prone to sintering cracks and deformation. To address this problem, the device further designs the partition group into 10 separate partition blocks. The shape of the partition block is consistent with the shape of the gap between the grinding disc blades, and can be completely embedded in the gap, thereby supporting the grinding disc blade in the gap, ensuring its stability during high-pressure sintering, and improving the yield of the integral sintered grinding disc.

[0013] 3. The integral sintered grinding disc is a complete disc, and before high-pressure sintering, it needs to be surrounded and fixed as a whole. If a traditional cylindrical mold is used, it is not convenient to take it out during the process, especially after sintering, the temperature is high, and the integral mold cannot take out the integral sintered grinding disc in time, which is not convenient for the subsequent cooling treatment and affects the processing progress. To solve this problem, the device designs the side baffle into two relatively arranged components, and uses the semi-cylindrical groove in the middle to form a complete fixed space, which is more convenient and quick to take and put, and improves the production efficiency of the integral sintered grinding disc.

[0014] 4. Since the integral sintered grinding disc and the grinding disc cutter heads are radially installed on the grinding disc base at intervals, the upper surface and the grinding disc base present an undulating shape. When the mold is fixed, if an ordinary clip mold is used for fixing, the mold cannot be in close contact with the grinding disc cutter head due to the gap in the middle. During high-pressure sintering, the grinding disc cutter head in the middle of the gap is still prone to sintering cracks and deformation. To address this problem, the device further designs the upper pressure head into 10 split fan-shaped blocks. The shape of the fan-shaped blocks is consistent with the shape of the grinding disc cutter head, which can completely match the grinding disc cutter head, thereby supporting the grinding disc cutter head, ensuring its stability during high-pressure sintering, ensuring the product size accuracy, and improving the yield rate of the integral sintered grinding disc.

[0015] 5. Due to the high temperature and high pressure sintering, the thermal conductivity coefficient of ordinary metal molds is large, and they absorb a lot of heat themselves. It is quite energy-consuming and inconvenient to operate during the later heat dissipation. To solve this problem, this device uses 3-immersion 4-baking high-strength graphite to process all the materials of the mold. It can ensure the strength of the mold while reducing the heat conduction of the mold itself, improving energy utilization and facilitating later processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a plan view of the device;

[0017] Figure 2 is the AA cross-sectional view of the device;

[0018] Figure 3 is a plan view of the side baffle;

[0019] Figure 4 It is the elevation view of the side baffle;

[0020] Figure 5 It is the plan view of the partition block;

[0021] Figure 6 is a plan view of the upper pressure head;

[0022] Figure 7 This is a schematic diagram of the installation position of the upper pressure head;

[0023] Figure numerals: 1-side baffle, 2-front baffle, 3-partition plate group, 4-lower pressure head, 5-upper pressure head, 6-core rod, 7-accommodating chamber, 8-partition plate, 9-semi-cylindrical groove, 10-fan-shaped block. DETAILED DESCRIPTION

[0024] In order for those skilled in the art to better understand the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and the following embodiments.

[0025] Example 1

[0026] As shown in the figure, this embodiment provides an integral sintered grinding wheel mold, including two side baffles 1, two front baffles 2, a partition group 3, a lower pressure head 4, an upper pressure head 5, and two core rods 6. The two side baffles 1 are relatively arranged to form a accommodating chamber 7 for accommodating a grinding wheel substrate, the two front baffles 2 are fixed on both sides of the side baffles 1, the two core rods 6 are arranged on the central axis of the accommodating chamber 7, and the lower pressure head 4, the partition group 3 and the upper pressure head 5 are arranged in sequence inside the accommodating chamber 7 from bottom to top.

[0027] The working principle of this embodiment is as follows: the common grinding disc is to sinter the blade head on the grinding disc, grind the welding surface, and then weld the blade head to the surface of the substrate by high-frequency welding. During the welding process, the high-frequency induction coil needs to be made according to the shape of the grinding disc, which is relatively troublesome. If the coil is not made well, it will directly affect the welding strength of the blade head. In view of this problem, this device adopts a sintering mold specially used for integral sintering grinding discs. This design adopts cold pressing of the blade head and then directly places it in a hot pressing mold together with the substrate for sintering. The small partition between the blade heads on the mold is determined by milling grooves on the substrate, and the small partition is directly inserted into the grooves on the substrate. In addition, several countersunk holes are drilled on the collective body to increase the bonding force between the blade head and the substrate and improve the bonding strength. After sintering, the blade head is easy to be combined with the substrate. This saves the welding sheet and flux consumed by welding, reduces the process, saves costs, and avoids the impact of high-frequency welding. At the same time, this device can assist the cold-pressed grinding disc in high-pressure sintering, ensuring that it maintains a stable shape during the high-pressure sintering process, preventing it from cracking and deforming due to high pressure, and improving the yield rate of the overall sintered grinding disc. At the same time, high-pressure sintering can also greatly shorten the firing time, and a single sintering only takes 10 minutes, effectively saving energy. When the device is working, the two side baffles 1 are installed facing each other and placed on the lower pressure head 4, and then the two front baffles 2 are clamped on both sides of the side baffles 1, and the first integral sintered grinding disc is placed into the accommodating chamber 7 with the grinding disc head facing upward. After fixing, the first core rod is inserted into the central axis of the integral sintered grinding disc, and the partition group 3 is installed. Then, the grinding disc head of the second integral sintered grinding disc is installed upward on the partition group 3, and the second core rod and the upper pressure head 5 are placed in sequence. After the entire mold is installed, all surfaces of the integral sintered grinding disc can be protected, and finally it is placed in the vacuum hot pressing sintering machine for sintering, and during the sintering process, the integral sintered grinding disc is provided with all-round shaping support to prevent it from cracking due to high pressure and the like, thereby improving the yield rate and product quality of the integral sintered grinding disc production, ensuring the product size accuracy, and reducing energy consumption.

[0028] Example 2

[0029] This embodiment is optimized as follows on the basis of Embodiment 1: As shown in the figure, this embodiment provides an integral sintered grinding wheel mold, including two side baffles 1, two front baffles 2, a partition group 3, a lower pressure head 4, an upper pressure head 5, and two core rods 6. The two side baffles 1 are relatively arranged to form a accommodating chamber 7 for accommodating the grinding wheel substrate, the two front baffles 2 are fixed on both sides of the side baffles 1, the two core rods 6 are arranged on the central axis of the accommodating chamber 7, and the lower pressure head 4, the partition group 3 and the upper pressure head 5 are arranged in sequence inside the accommodating chamber 7 from bottom to top.

[0030] The partition plate group 3 includes 10 partition plates 8, which are radially distributed in the accommodating chamber 7 with the central axis of the accommodating chamber 7 as the center. The two ends of the partition plates 8 are arc-shaped, and the arcs at the two ends are concentric arcs of R39 and R15.

[0031] The working principle of this embodiment is as follows: since the integrally sintered grinding disc and grinding disc cutter heads are radially installed on the grinding disc cutter body at intervals, the upper surface thereof and the grinding disc cutter body present an undulating shape. When the mold is fixed, if an ordinary clip mold is used for fixing, the mold cannot be in close contact with the grinding disc cutter heads due to the gap in the middle. During high-pressure sintering, the grinding disc cutter heads in the middle of the gap are still prone to sintering cracks and deformation.

[0032] Example 3

[0033] This embodiment is optimized as follows on the basis of Embodiment 1: As shown in the figure, this embodiment provides an integral sintered grinding wheel mold, including two side baffles 1, two front baffles 2, a partition group 3, a lower pressure head 4, an upper pressure head 5, and two core rods 6. The two side baffles 1 are relatively arranged to form a accommodating chamber 7 for accommodating the grinding wheel substrate, the two front baffles 2 are fixed on both sides of the side baffles 1, the two core rods 6 are arranged on the central axis of the accommodating chamber 7, and the lower pressure head 4, the partition group 3 and the upper pressure head 5 are arranged in sequence inside the accommodating chamber 7 from bottom to top.

[0034] A semi-cylindrical groove 9 is arranged at the center of the side baffle 1, and the diameter of the semi-cylindrical groove 9 is ф78.

[0035] The working principle of this embodiment is as follows: the integral sintered grinding disc is a complete disc, and before high-pressure sintering, it needs to be surrounded and fixed as a whole. If a traditional cylindrical mold is used, it is not very convenient during the process of taking and placing, especially after sintering, the temperature is high, and the integral mold cannot take out the integral sintered grinding disc in time, which is not convenient for the subsequent cooling treatment and affects the processing progress. In view of this problem, the device designs the side baffle 1 into two relatively arranged components, and uses the semi-cylindrical groove 9 in the middle to form a complete fixed space, which is more convenient and quick when taking and placing, and improves the production efficiency of the integral sintered grinding disc.

[0036] Example 4

[0037] This embodiment is optimized as follows on the basis of Embodiment 1: As shown in the figure, this embodiment provides an integral sintered grinding wheel mold, including two side baffles 1, two front baffles 2, a partition group 3, a lower pressure head 4, an upper pressure head 5, and two core rods 6. The two side baffles 1 are relatively arranged to form a accommodating chamber 7 for accommodating the grinding wheel substrate, the two front baffles 2 are fixed on both sides of the side baffles 1, the two core rods 6 are arranged on the central axis of the accommodating chamber 7, and the lower pressure head 4, the partition group 3 and the upper pressure head 5 are arranged in sequence inside the accommodating chamber 7 from bottom to top.

[0038] The upper pressure head 5 includes 10 sector-shaped blocks 10 with the same appearance. The cross-sectional angle of the sector-shaped block 10 is 36°, and the two arc sides of the sector-shaped block 10 are concentric arcs of R15 and R39.

[0039] The working principle of this embodiment is as follows: since the integrally sintered grinding disc and grinding disc cutter heads are radially installed on the grinding disc cutter body at intervals, the upper surface thereof and the grinding disc cutter body present an undulating shape. When the mold is fixed, if an ordinary clip mold is used for fixing, the mold cannot be in close contact with the grinding disc cutter heads due to the gap in the middle. During high-pressure sintering, the grinding disc cutter heads in the middle of the gap are still prone to sintering cracks and deformation.

[0040] Example 5

[0041] This embodiment is optimized as follows on the basis of Embodiment 1 or 2: As shown in the figure, this embodiment provides an integral sintered grinding wheel mold, including two side baffles 1, two front baffles 2, a partition group 3, a lower pressure head 4, an upper pressure head 5, and two core rods 6. The two side baffles 1 are relatively arranged to form a accommodating chamber 7 for accommodating the grinding wheel substrate, the two front baffles 2 are fixed on both sides of the side baffles 1, the two core rods 6 are arranged on the central axis of the accommodating chamber 7, and the lower pressure head 4, the partition group 3 and the upper pressure head 5 are arranged in sequence inside the accommodating chamber 7 from bottom to top.

[0042] The side baffle 1, the front baffle 2, the partition assembly 3, the lower pressure head 4, the upper pressure head 5, and the two core rods 6 are all made of high-strength graphite that has been processed through three-impregnation and four-baking processes.

[0043] The working principle of this embodiment is as follows: due to high temperature and high pressure sintering, ordinary metal molds have a large thermal conductivity coefficient and absorb a large amount of heat themselves, which is quite energy-consuming and inconvenient to operate during the subsequent heat dissipation. To address this problem, this device uses high-strength graphite processed by 3-immersion and 4-baking for all materials of the mold, which can ensure the strength of the mold while reducing the heat conduction of the mold itself, improving energy utilization and facilitating subsequent processing.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the specification of the present invention should also be included in the protection scope of the present invention.

Claims

1. An integral sintered grinding disc mold, characterized in that: The invention comprises two side baffles (1), two front baffles (2), a baffle group (3), a lower pressure head (4), an upper pressure head (5), and two core rods (6); the two side baffles (1) are arranged opposite to each other to form a receiving chamber (7) for receiving a grinding disc base; the two front baffles (2) are fixed on both sides of the side baffles (1); the two core rods (6) are arranged on the central axis of the receiving chamber (7); the lower pressure head (4), the baffle group (3) and the upper pressure head (5) are arranged in sequence from bottom to top inside the receiving chamber (7); The partition plate group (3) comprises 10 partition plates (8), the partition plates (8) being radially distributed in the accommodating chamber (7) with the central axis of the accommodating chamber (7) as the center, the two ends of the partition plates (8) being arc-shaped, and the arc-shaped ends of the partition plates (8) being concentric arcs of R39 and R15; The upper pressure head (5) comprises 10 fan-shaped blocks (10) of the same appearance, the cross-sectional angle of the fan-shaped blocks (10) is 36°, and the two arc-shaped edges of the fan-shaped blocks (10) are concentric arcs of R15 and R39; When the device is working, the two side baffles (1) are installed facing each other and placed on the upper pressure head (5), and then the two front baffles (2) are clamped on both sides of the side baffles (1). The first integral sintered grinding disc is placed with the grinding disc head facing upward into the accommodating chamber (7). After being fixed, the first core rod is inserted into the central axis of the integral sintered grinding disc, and the partition plate group (3) is installed. Then, the second integral sintered grinding disc is installed with the grinding disc head facing upward onto the partition plate group (3), and the second core rod and the lower pressure head (4) are placed in sequence. After the entire mold is installed, it is placed in a vacuum hot pressing sintering machine for sintering.

2. The integral sintered grinding disc mold according to claim 1, characterized in that: A semi-cylindrical groove (9) is provided at the center of the side baffle (1), and the diameter of the semi-cylindrical groove (9) is ф78.

3. The integrally sintered grinding disc mold according to claim 1, characterized in that: The side baffle (1), the front baffle (2), the partition plate group (3), the lower pressure head (4), the upper pressure head (5), and the two core rods (6) are all made of high-strength graphite that has been processed through three-impregnation and four-baking processes.

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