A mold and a process method for manufacturing a circumferentially thin-sheet-tooth assembled resin grinding wheel

Abstract

The present invention relates to a mold and a process method for manufacturing a circumferential thin-sheet tooth-joined resin grinding wheel, belonging to the field of grinding processing. It includes: a bottom frame, an outer frame, a top frame, a plurality of lower pressing heads, a plurality of upper pressing heads, a plurality of partition plates, a plurality of spacer bars, a plurality of working layers and a plurality of non-working layers; the bottom frame and the top frame are correspondingly arranged at the bottom end and the top end of the outer frame respectively, a plurality of the partition plates are respectively connected to a plurality of the spacer bars, and the partition plates and the spacer bars divide the space formed by the bottom frame, the outer frame and the top frame into a plurality of chambers. A plurality of the lower pressing heads are correspondingly arranged at the bottom ends of the plurality of chambers, and a plurality of the upper pressing heads are correspondingly arranged at the top ends of the plurality of chambers. The working layers and the non-working layers are both arranged between the lower pressing heads and the upper pressing heads. The resin grinding wheel manufactured by the present invention using axial and lateral mold removal has a large number of tooth slices, and the circumferential groove width of the assembled grinding wheel is small, optimizing the manufacturing process of the tooth slices of the joined grinding wheel.

Description

Technical Field

[0001] The present invention relates to the field of grinding machining, and particularly relates to a mold and a process method for manufacturing a circumferentially thin-sheet-tooth assembled resin grinding wheel. Background Art

[0002] In the prior art, resin grinding wheels with an end face as the grinding surface generally adopt two types: a continuous integral ring and a segmented ring. The segmented ring is further subdivided into a radially through water groove type, an inner water groove, an outer chip removal groove, or a composite manner of the above. For the continuous integral ring grinding wheel, the chip removal and cooling capacity is poor, and the phenomenon of burning is likely to occur during the grinding process, especially not suitable for grinding machining with high speed, fine abrasive, and large grinding area (i.e., the instantaneous grinding contact area between the grinding tool and the workpiece). For the segmented grinding wheel, although the through water groove is beneficial to chip removal, the utilization rate of cooling water is extremely low, and in the overall manufacturing process of the through water groove, the inner water groove, and the outer chip removal groove, it is difficult to manufacture a grinding wheel with a large number and a small circumferential groove width due to the limitation of the strength of the mold material.

[0003] In the prior art, grinding wheels with a small diameter are usually integrally manufactured, and sintered with the mold during manufacturing. The volume occupancy of the grinding wheel in the mold is large, and the production efficiency is low; while for grinding wheels with a large diameter, generally, racks with a long circumferential length are manufactured, and then multiple racks are spliced end to end to form a grinding ring. Due to the large circumferential length, the chip removal and cooling capacities of this method are both poor. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: to provide a mold and a process method for manufacturing a circumferentially thin-sheet-tooth assembled resin grinding wheel, which optimize the manufacturing process of the assembled resin grinding wheel.

[0005] The technical solution for the present invention to solve the above technical problem is as follows: A mold for manufacturing a circumferentially thin-sheet-tooth assembled resin grinding wheel, comprising: a bottom frame, an outer frame, a top frame, a plurality of lower pressing heads, a plurality of upper pressing heads, a plurality of partition plates, a plurality of partition strips, a plurality of working layers, and a plurality of non-working layers; the bottom frame and the top frame are correspondingly arranged at the bottom end and the top end of the outer frame respectively, a plurality of the partition plates are respectively connected to a plurality of the partition strips, and the partition plates and the partition strips divide the space formed by the bottom frame, the outer frame, and the top frame into a plurality of chambers. A plurality of the lower pressing heads are correspondingly arranged at the bottom ends of the plurality of chambers, a plurality of the upper pressing heads are correspondingly arranged at the top ends of the plurality of chambers, a plurality of the working layers are correspondingly arranged below a plurality of the non-working layers, and both the working layers and the non-working layers are arranged between the lower pressing heads and the upper pressing heads. The partition plates and the partition strips are respectively connected to the bottom frame, the outer frame, and the top frame; the partition plates are provided with a plurality of working layer partition plates, a plurality of non-working layer partition plates, a plurality of lower partition plates, and a plurality of concave-convex structures. The working layer partition plates, the non-working layer partition plates, and the lower partition plates are all strip-shaped plate structures, and the concave-convex structures are arranged on the working layer partition plates and the non-working layer partition plates.

[0006] The beneficial effects of the present invention are as follows: Compared with the molds for manufacturing split grinding wheels in the prior art, on the one hand, the resin grinding wheel teeth manufactured by the mold in the technical solution of the present invention not only have a large number, effectively improving the effective utilization rate of the mold and the processing efficiency of the teeth, but also the width of the concave-convex structure on the side wall of a single tooth is narrow. When multiple teeth are densely assembled to form a grinding wheel, the width of the groove for cooling or chip removal in the circumferential direction of the grinding wheel will be very narrow, which is more conducive to achieving the effects of rapid chip removal and dense point internal cooling of the grinding wheel; on the other hand, when the mold in the technical solution of the present invention is disassembled, it can be disassembled not only in the vertical direction of the mold, but also in the horizontal direction. This disassembly method is conducive to manufacturing functional concave-convex structures such as supporting bumps on the side wall of the resin teeth, creatively optimizing the tooth manufacturing process, not only improving the effective utilization rate of the mold, but also ensuring the integrity of the concave-convex structure on the teeth, and at the same time ensuring the water passing and chip removal spaces between teeth.

[0007] On the basis of the above technical solution, the present invention can be further improved as follows.

[0008] Further, the bottom frame and the top frame are annular plate-like structures with dimensions adapted to the outer frame. The bottom surface and the top surface of the outer frame are respectively in contact with the top surface of the bottom frame and the bottom surface of the top frame. The non-working layer partition is in contact with the inner wall of the top frame, and the lower partition is in contact with the inner wall of the bottom frame.

[0009] Further, the outer frame is a tubular structure. A plurality of groups of partition mounting holes are symmetrically arranged on the front and rear side walls of the outer frame. The partition mounting holes are through holes, and a plurality of the working layer partitions are respectively adapted to and connected with the plurality of groups of partition mounting holes.

[0010] The beneficial effects of adopting the above further solution are as follows: The cooperation of the bottom frame, the top frame and the outer frame with the partitions and the partition strips can divide the entire mold into a very large number of chambers, which is convenient for increasing the number of resin teeth manufactured, and thus is conducive to improving the effective utilization rate of the mold during the production of resin teeth and the processing efficiency of resin teeth.

[0011] Further, the non-working layer partitions and the lower partitions are respectively arranged at the upper end and the lower end of the working layer partitions. A plurality of the working layer partitions, a plurality of the non-working layer partitions and a plurality of the lower partitions are coaxially arranged in the horizontal direction, and are coaxially arranged in the vertical direction in a one-to-one correspondence. The top surface of the working layer partition and the bottom surface of the non-working layer partition are in a serrated shape that is adapted to each other, and the bottom surface of the working layer partition is in contact with the top surface of the lower partition.

[0012] The beneficial effects of adopting the above-mentioned further scheme are: splitting the partition into working layer partition, non-working layer partition and lower partition, on the one hand, can design concave-convex structures with different functions according to actual needs, which not only increases the number of resin teeth manufactured by the mold, but also makes the groove width of the grinding wheel composed of multiple teeth narrower in the circumferential direction, which is beneficial to the cooling and chip removal of the grinding wheel; on the other hand, it is beneficial to remove the working layer partition and the non-working layer partition in sequence along the direction perpendicular to the side of the grinding wheel teeth when demolding, thereby ensuring the integrity of the functional concave-convex structure on the side of the grinding wheel teeth and avoiding damage to the grinding wheel teeth when demolding.

[0013] Furthermore, the partition is also provided with a plurality of partition bar installation grooves, which are strip-shaped groove structures. The plurality of partition bar installation grooves are symmetrically arranged on the left and right side walls of the plurality of working layer partitions, the plurality of non-working layer partitions and the plurality of lower partitions, respectively. The plurality of partition bar installation grooves on the working layer partitions, the plurality of partition bar installation grooves on the non-working layer partitions and the plurality of partition bar installation grooves on the lower partitions are all coaxially arranged in the horizontal direction, and correspond one to one and are coaxially arranged in the vertical direction.

[0014] The beneficial effect of adopting the above further scheme is that the arrangement of the partition bar installation groove, the working layer partition plate, the non-working layer partition plate and the lower partition plate is conducive to ensuring that the cavity for making the resin tooth piece is flat in the three-dimensional direction, avoiding defects in the sintered resin tooth piece due to the mold itself, and thus being unable to be assembled into a finished grinding wheel.

[0015] Furthermore, the plurality of concave-convex structures are arranged one by one on the side wall between two adjacent partition bar installation grooves of the working layer partition and the non-working layer partition, the side wall between the partition bar installation groove at the front end of the working layer partition and the non-working layer partition and the inner wall of the outer frame, and the side wall between the partition bar installation groove at the rear end of the working layer partition and the non-working layer partition and the inner wall of the outer frame.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the concave-convex structure is conducive to prefabricating the required functional structure of the working layer and non-working layer of the grinding wheel tooth plate, making the functional structure on the side wall of the working layer and non-working layer of the sintered resin tooth plate narrower, thereby making the circumferential groove width of the assembled annular grinding wheel narrower, which is more conducive to improving the cooling and chip removal effects and enhancing the grinding wheel support strength and other functions.

[0017] Furthermore, the partition bar is a block structure adapted to be connected to the partition bar mounting groove, and the leftmost and rightmost partition bars are respectively in contact with the inner wall of the bottom frame, the inner wall of the outer frame and the inner wall of the top frame.

[0018] The beneficial effects of adopting the above further solution are as follows: The partition strips are conducive to cooperating with the partition plates to divide the space formed by the bottom frame, the outer frame and the top frame into multiple chambers, thereby increasing the number of resin tooth slices produced.

[0019] Furthermore, both the lower pressing head and the upper pressing head are in a block structure, and both the lower pressing head and the upper pressing head are arranged in a plurality of chambers formed by the partition plates, the partition strips, the bottom frame, the outer frame and the top frame in a vertically movable manner.

[0020] The beneficial effects of adopting the above further solution are as follows: The upper pressing head and the lower pressing head are conducive to applying pressure to the working layer and the non-working layer, pressing the working layer powder and the non-working layer powder tightly in the vertical direction, and facilitating subsequent high-temperature sintering.

[0021] The present invention also provides a process method for manufacturing a circumferentially thin-sheet tooth-joined resin grinding wheel, including the following steps:

[0022] S1: Install a plurality of partition strips on a plurality of lower partition plates respectively, so that the inner wall of the bottom frame is connected to the partition strips and the lower partition plates;

[0023] S2: Arrange a plurality of lower pressing heads in a one-to-one correspondence in a plurality of chambers formed by the bottom frame, the partition strips and the lower partition plates;

[0024] S3: Install a plurality of working layer partition plates on a plurality of lower partition plates respectively, install a plurality of partition strips on a plurality of working layer partition plates respectively, install the outer frame on the bottom frame, so that the partition strips and the working layer partition plates are connected to the inner wall of the outer frame;

[0025] S4: Uniformly put the working layer powder on top of the lower pressing heads, and uniformly put the non-working layer powder on the working layer powder;

[0026] S5: Install a plurality of partition strips on a plurality of non-working layer partition plates respectively, adaptively connect the bottom ends of the non-working layer partition plates to the top ends of the working layer partition plates, install the top frame on the outer frame, so that the partition strips and the non-working layer partition plates are connected to the inner wall of the top frame;

[0027] S6: Arrange a plurality of upper pressing heads in a one-to-one correspondence in a plurality of chambers formed by the top frame, the partition strips and the non-working layer partition plates;

[0028] S7: Apply an upward force to the lower pressing heads and a downward force to the upper pressing heads simultaneously, so that the working layer powder and the non-working layer powder are pressed tightly;

[0029] S8: Perform high-temperature sintering on the mold, and after the mold is cooled, remove the mold to obtain a plurality of tooth slices containing a working layer and a non-working layer and having structures on the side walls of the working layer and the non-working layer that are adapted to the concave-convex structures;

[0030] S9: Connect the non-working layers of a plurality of tooth slices to the grinding wheel base body, so that the working layers of the plurality of tooth slices are connected to each other to form an annular structure.

[0031] The beneficial effects of the present invention are as follows: realizing the functions of rapid chip removal and intensive internal cooling of the grinding tool; facilitating the realization of some functional structures on the circumferential tooth surface that cannot be achieved due to interference in the overall mold manufacturing; enabling grinding wheels with a large number and a small circumferential width of water grooves or chip removal grooves; improving the sintering efficiency and reducing the sintering cost; simple and reliable feeding; facilitating the automated assembly of grinding rings and large-scale production of grinding wheels, reducing the processing cost of grinding wheels; improving the adaptability of the grinding wheel to high-speed grinding; improving the adaptability of the grinding wheel to finer abrasive grinding; improving the adaptability of the grinding wheel to heavy grinding; significantly improving the performance of the grinding wheel; applicable to the manufacturing of ceramic bond grinding wheels; suitable for composite structures formed by the splicing of resin tooth chips, metal tooth chips, and ceramic tooth chips, where the metal tooth chips can enhance the strength of the grinding ring and improve the wear resistance. Description of the Drawings

[0032] Figure 1 Schematic diagram of the overall mold structure provided by an embodiment of the present invention;

[0033] Figure 2 is Figure 1 Top view of the structure shown;

[0034] Figure 3 is Figure 2 Cross-sectional view taken along the section line A-A of the structure shown;

[0035] Figure 4 is Figure 2 Cross-sectional view taken along the section line B-B of the structure shown when both the upper press head and the lower press head are tightened;

[0036] Figure 5 is Figure 2 Cross-sectional view taken along the section line B-B of the structure shown when neither the upper press head nor the lower press head is tightened;

[0037] Figure 6 Schematic diagram of the outer frame structure provided by an embodiment of the present invention;

[0038] Figure 7 Schematic diagram of the partition structure provided by an embodiment of the present invention;

[0039] Figure 8 is Figure 7 Front view of the structure shown;

[0040] Figure 9 is Figure 8 Partial enlarged view of the V region of the structure shown;

[0041] Figure 10 Schematic diagram of the connection between the partition and the partition bar provided by an embodiment of the present invention;

[0042] Figure 11 Schematic diagram of the connection between the lower partition board and the working layer partition board provided by an embodiment of the present invention;

[0043] Figure 12 Schematic diagram of the connection between the bottom frame, the top frame, the partition board and the partition strip provided by an embodiment of the present invention;

[0044] Figure 13 is Figure 12 side view of the structure shown;

[0045] Figure 14 is Figure 13 partial enlarged view of the X area in the structure shown;

[0046] Figure 15 Schematic diagram of the connection between the tooth piece and the grinding wheel base provided by an embodiment of the present invention;

[0047] Figure 16 is Figure 15 partial enlarged view of the T area in the structure shown.

[0048] Among them, Figure 1 the double-headed arrow indicates the installation orientation of each component.

[0049] In the drawings, the list of components represented by each reference numeral is as follows:

[0050] 1. Bottom frame; 2. Outer frame; 3. Top frame; 4. Lower pressure head; 5. Upper pressure head; 6. Partition board; 7. Partition strip; 8. Working layer; 9. Non-working layer; 21. Partition board installation hole; 61. Working layer partition board; 62. Non-working layer partition board; 63. Lower partition board; 64. Partition strip installation groove; 65. Concave-convex structure. Detailed implementation manners

[0051] The principles and features of the present invention will be described below. The examples given are only used to explain the present invention and are not intended to limit the scope of the present invention.

[0052] As Figures 1 to 5As shown in the figure, a mold for manufacturing a circumferential thin-sheet tooth-joined resin grinding wheel includes: a bottom frame 1, an outer frame 2, a top frame 3, a plurality of lower pressing heads 4, a plurality of upper pressing heads 5, a plurality of partition plates 6, a plurality of partition bars 7, a plurality of working layers 8, and a plurality of non-working layers 9; the bottom frame 1 and the top frame 3 are correspondingly arranged at the bottom end and the top end of the outer frame 2 respectively, a plurality of the partition plates 6 are respectively connected to a plurality of the partition bars 7, and the partition plates 6 and the partition bars 7 divide the space formed by the bottom frame 1, the outer frame 2, and the top frame 3 into a plurality of chambers. A plurality of the lower pressing heads 4 are correspondingly arranged at the bottom ends of the plurality of chambers, a plurality of the upper pressing heads 5 are correspondingly arranged at the top ends of the plurality of chambers, a plurality of the working layers 8 are correspondingly arranged below a plurality of the non-working layers 9, and both the working layers 8 and the non-working layers 9 are arranged between the lower pressing heads 4 and the upper pressing heads 5. The partition plates 6 and the partition bars 7 are respectively connected to the bottom frame 1, the outer frame 2, and the top frame 3; the partition plates 6 are provided with a plurality of working layer partition plates 61, a plurality of non-working layer partition plates 62, a plurality of lower partition plates 63, and a plurality of concave-convex structures 65. The working layer partition plates 61, the non-working layer partition plates 62, and the lower partition plates 63 are all strip-shaped plate structures, and the concave-convex structures 65 are arranged on the working layer partition plates 61 and the non-working layer partition plates 62.

[0053] Among them, it should be understood that: the "circumferential thin sheet teeth" in the title of the present invention means that when a plurality of resin tooth sheets are joined to form an annular grinding wheel, compared with the joined grinding wheel in the prior art, the single resin tooth sheet on the annular grinding wheel of the present invention is thinner, and the width of the circumferential groove for cooling or chip removal on the grinding wheel formed by the concave-convex structures on the side wall of the resin tooth sheet is narrower.

[0054] The beneficial effects of the present invention are as follows: Compared with the molds for manufacturing joined grinding wheels in the prior art, on the one hand, the resin tooth sheets manufactured by the mold in the technical solution of the present invention not only have a large number, effectively improving the effective utilization rate of the mold and the processing efficiency of the tooth sheets, but also the width of the concave-convex structures on the side wall of a single tooth sheet is narrow. When a plurality of tooth sheets are densely joined to form a grinding wheel, the width of the groove for cooling or chip removal in the circumferential direction of the grinding wheel will be very narrow, which is more conducive to realizing the effects of rapid chip removal and dense point internal cooling of the grinding wheel; on the other hand, when the mold in the technical solution of the present invention is disassembled, it can be disassembled not only in the vertical direction of the mold, but also in the horizontal direction. This disassembly method is conducive to manufacturing concave-convex structures on the side wall of the resin tooth sheet, creatively optimizing the tooth sheet manufacturing process, not only improving the effective utilization rate of the mold, but also ensuring the integrity of the concave-convex structures on the tooth sheet.

[0055] Preferably, as Figures 1 to 5As shown, the bottom frame 1 and the top frame 3 are annular plate-like structures with dimensions adapted to the outer frame 2. The bottom surface and the top surface of the outer frame 2 are in abutment with the top surface of the bottom frame 1 and the bottom surface of the top frame 3 respectively. The non-working layer partition 62 is in abutment with the inner wall of the top frame 3, and the lower partition 63 is in abutment with the inner wall of the bottom frame 1.

[0056] Preferably, as Figures 1 to 6 shown, the outer frame 2 is a tubular structure. On the front and rear side walls of the outer frame 2, multiple groups of partition mounting holes 21 are symmetrically arranged. The partition mounting holes 21 are through holes, and multiple working layer partitions 61 are respectively and adaptively connected to multiple groups of the partition mounting holes 21.

[0057] Among them, it should be understood that: in the preferred embodiment of the present invention, the bottom frame 1 and the top frame 3 are both regular quadrilateral annular plate-like structures, the outer frame 2 is a regular quadrilateral tubular structure, and the cross-sections of the bottom frame 1, the outer frame 2 and the top frame 3 are all regular quadrilaterals with adapted dimensions, which is beneficial to maximizing the effective utilization rate of the mold.

[0058] The beneficial effect of adopting the above preferred scheme is that the bottom frame, the top frame and the outer frame cooperate with the partitions and partition strips to divide the entire mold into a very large number of chambers, which is convenient for increasing the manufacturing quantity of resin tooth chips, and thus is beneficial to improving the effective utilization rate of the mold and the processing efficiency of resin tooth chips during the production of resin tooth chips.

[0059] Preferably, as Figures 12 to 14 shown, the non-working layer partitions 62 and the lower partitions 63 are respectively arranged at the upper and lower ends of the working layer partitions 61. Multiple working layer partitions 61, multiple non-working layer partitions 62 and multiple lower partitions 63 are coaxially arranged in the horizontal direction, and are correspondingly and coaxially arranged in the vertical direction. The top surface of the working layer partition 61 and the bottom surface of the non-working layer partition 62 are in a serrated shape that is mutually adapted and connected, and the bottom surface of the working layer partition 61 is in abutment with the top surface of the lower partition 63.

[0060] Among them, it should be understood that: in the technical solution of the present invention, after adding the working layer powder material, the added non-working layer powder material is substantially a molten material during the sintering process. The mutually adapted serrated structures provided on the top surface of the working layer partition 61 and the bottom surface of the non-working layer partition 62 are beneficial to truncating the molten non-working layer 9, so that the materials of multiple non-working layers 9 are respectively located above multiple working layers 8.

[0061] The beneficial effects of adopting the above preferred solution are as follows: splitting the partition plate into a working layer partition plate, a non-working layer partition plate, and a lower partition plate can, on the one hand, design concave-convex structures with different functions according to actual needs, which not only increases the number of resin tooth slices manufactured by the mold, but also narrows the groove width in the circumferential direction of the grinding wheel composed of multiple tooth slices, facilitating the cooling and chip removal of the grinding wheel; on the other hand, it is beneficial to sequentially remove the working layer partition plate and the non-working layer partition plate in the direction perpendicular to the side surface of the grinding wheel tooth slice during mold removal, ensuring the integrity of the functional concave-convex structure on the side surface of the grinding wheel tooth slice and reducing the breakage rate of the grinding wheel tooth slice during mold removal.

[0062] Preferably, as Figures 7 to 9 shown, the partition plate 6 is further provided with a plurality of spacer installation grooves 64, the spacer installation grooves 64 are in the shape of strip-shaped grooves, and a plurality of the spacer installation grooves 64 are symmetrically arranged on the left and right side walls of a plurality of the working layer partition plates 61, a plurality of the non-working layer partition plates 62, and a plurality of the lower partition plates 63 respectively. The plurality of the spacer installation grooves 64 on the working layer partition plate 61, the plurality of the spacer installation grooves 64 on the non-working layer partition plate 62, and the plurality of the spacer installation grooves 64 on the lower partition plate 63 are coaxially arranged in the horizontal direction and are coaxially arranged in one-to-one correspondence in the vertical direction.

[0063] The beneficial effects of adopting the above preferred solution are as follows: the cooperation of the spacer installation grooves with the working layer partition plate, the non-working layer partition plate, and the lower partition plate is beneficial to ensuring that the chambers for manufacturing resin tooth slices are flush in three-dimensional directions, avoiding defects in the sintered resin tooth slices caused by the mold itself, and thus preventing them from being assembled into a finished grinding wheel.

[0064] Preferably, as Figures 7 to 9 shown, a plurality of the concave-convex structures 65 are arranged in one-to-one correspondence on the side walls between two adjacent spacer installation grooves 64 of the working layer partition plate 61 and the non-working layer partition plate 62, on the side walls between the frontmost spacer installation groove 64 of the working layer partition plate 61 and the non-working layer partition plate 62 and the inner wall of the outer frame 2, and on the side walls between the rearmost spacer installation groove 64 of the working layer partition plate 61 and the non-working layer partition plate 62 and the inner wall of the outer frame 2.

[0065] Among them, it is necessary to understand that: the concave-convex structure 65 has no fixed shape, and the structure to be set is determined according to the function that the grinding wheel needs to optimize. Common settings include point support structures between teeth, structures that prevent cooling water from being excessively concentrated at the outer diameter under the action of centrifugal force, structures that promote the flow of cooling water to the end face, structures that take into account the water distribution of the radial inner ring, the middle ring, and the outer ring, etc. In the actual grinding process, since the working layer 8 of the resin tooth piece generally requires good drainage, chip removal, high strength, high deformation resistance and other functions, the concave-convex structure 65 on the working layer partition 61 will be correspondingly configured to make the working layer 8 on the resin tooth piece have grooves for cooling and chip removal and a convex structure with strength support. Similarly, the concave-convex structure 65 on the non-working layer partition 62 will also be correspondingly configured to make the non-working layer 9 on the resin tooth piece have functions such as consolidation or anti-flying.

[0066] The beneficial effect of adopting the above-mentioned preferred scheme is that the concave-convex structure is conducive to prefabricating the required functional structure of the working layer and non-working layer of the resin tooth plate, making the functional structure on the side wall of the working layer and non-working layer of the sintered resin tooth plate narrower, thereby making the circumferential groove width of the assembled annular grinding wheel narrower, which is more conducive to improving the cooling and chip removal effects and enhancing the supporting strength of the grinding wheel.

[0067] Preferably, Figure 10 and Figure 11 As shown, the partition bar 7 is a block structure adapted to be connected to the partition bar mounting groove 64, and the leftmost and rightmost partition bars 7 are respectively in contact with the inner wall of the bottom frame 1, the inner wall of the outer frame 2 and the inner wall of the top frame 3.

[0068] The beneficial effect of adopting the above preferred solution is that the partition strip is conducive to cooperating with the partition plate to separate the space formed by the bottom frame, the outer frame and the top frame into multiple chambers, thereby increasing the number of resin teeth produced.

[0069] Preferably, Figure 4 and Figure 5 As shown, the lower pressure head 4 and the upper pressure head 5 are both block structures, and the lower pressure head 4 and the upper pressure head 5 can be movably arranged up and down in a plurality of chambers formed by the partition 6 and the partition bar 7 and the bottom frame 1, the outer frame 2 and the top frame 3.

[0070] The beneficial effect of adopting the above preferred solution is that the upper pressure head and the lower pressure head are conducive to applying pressure to the working layer and the non-working layer, so that the working layer powder and the non-working layer powder are compacted in the vertical direction, which is convenient for subsequent high-temperature sintering.

[0071] Preferably, Figure 15 and Figure 16 As shown, the present invention also provides a process for manufacturing a circumferential thin-slice tooth split resin grinding wheel, comprising the following steps:

[0072] S1: Install multiple spacers 7 onto multiple lower partition plates 63 respectively, so that the inner wall of the bottom frame 1 is connected to the spacers 7 and the lower partition plates 63.

[0073] S2: Arrange multiple lower pressing heads 4 one by one in the multiple chambers formed by the bottom frame 1, the spacers 7, and the lower partition plates 63.

[0074] S3: Install multiple working layer partition plates 61 one by one onto multiple lower partition plates 63, install multiple spacers 7 onto multiple working layer partition plates 61 respectively, and install the outer frame 2 onto the bottom frame 1, so that the spacers 7 and the working layer partition plates 61 are connected to the inner wall of the outer frame 2.

[0075] S4: Uniformly put the working layer powder material above the lower pressing heads 4, and uniformly put the non - working layer powder material above the working layer powder material.

[0076] S5: Install multiple spacers 7 onto multiple non - working layer partition plates 62 respectively, adaptively connect the bottom ends of the non - working layer partition plates 62 to the top ends of the working layer partition plates 61, and install the top frame 3 onto the outer frame 2, so that the spacers 7 and the non - working layer partition plates 62 are connected to the inner wall of the top frame 3.

[0077] S6: Arrange multiple upper pressing heads 5 one by one in the multiple chambers formed by the top frame 3, the spacers 7, and the non - working layer partition plates 62.

[0078] S7: Apply an upward force to the lower pressing heads 4 and a downward force to the upper pressing heads 5 simultaneously, so that the working layer powder material and the non - working layer powder material are pressed tightly.

[0079] S8: Perform high - temperature sintering on the mold. After the mold cools down, remove the mold to obtain multiple tooth pieces with a working layer 8 and a non - working layer 9, and on the side walls of the working layer 8 and the non - working layer 9, there are structures adapted to the concave - convex structure 65.

[0080] S9: Connect the non - working layer 9 of multiple tooth pieces to the grinding wheel base body, and connect the working layers 8 of multiple tooth pieces to form an annular structure.

[0081] The following further explains a process method for manufacturing a circumferential thin - sheet tooth - assembled resin grinding wheel:

[0082] In step S3, installing multiple working layer partition plates 61 one by one onto multiple lower partition plates 63 means: making the bottom surface of the working layer partition plate 61 abut against the top surface of the lower partition plate 63; installing the outer frame 2 onto the bottom frame 1 means: making the bottom surface of the outer frame 2 abut against the top surface of the bottom frame 1.

[0083] In step S4, the working layer powder material and the non - working layer powder material can be powders of materials such as resin, metal, or ceramic. The specific material can be selected according to actual needs.

[0084] In step S5, installing the top frame 3 onto the outer frame 2 means that the bottom surface of the top frame 3 abuts against the top surface of the outer frame 2.

[0085] In steps S2 to S6, since the lower partition 63, the working layer partition 61, and the non-working layer partition 62 are coaxially arranged in the vertical direction, and the strip installation grooves 64 on the lower partition 63, the strip installation grooves 64 on the working layer partition 61, and the strip installation grooves 64 on the non-working layer partition 62 are coaxially arranged in the vertical direction, the multiple chambers formed by the bottom frame 1, the strips 7, and the lower partition 63 in step 2 and the multiple chambers formed by the top frame 3, the strips 7, and the non-working layer partition 62 in step 6 correspond one by one and are the same chamber as the multiple chambers formed by the outer frame 2, the strips 7, and the working layer partition 61.

[0086] In step S7, when the working layer powder and the non-working layer powder are compacted under the upper and lower pressures, they will enter the prefabricated concave-convex structures 65 on the working layer partition 61 and the non-working layer partition 62.

[0087] In step S8, axial demolding and lateral demolding are required during demolding, that is: the top frame 3, the outer frame 2, and the bottom frame 1 are removed in the vertical direction, and the working layer partition 61, the non-working layer partition 62, the lower partition 63, and the strips 7 are removed in the horizontal direction. The above demolding method is beneficial to manufacturing concave-convex structures on the side walls of the resin tooth slices, creatively optimizing the tooth slice manufacturing process, not only improving the effective utilization rate of the mold, but also ensuring the integrity of the concave-convex structures on the tooth slices.

[0088] In step S9, the outer circle of the annular grinding ring formed by multiple resin tooth slices is closed, and the annular grinding wheel also needs to be shaped, edge-opened, and subjected to finished product inspection before being put into use. At the same time, the materials of the tooth slices of the annular grinding wheel can be not completely the same. For example, resin tooth slices, metal tooth slices, and ceramic tooth slices can be used to form the annular grinding ring by mutual splicing.

[0089] The beneficial effects of the present invention are: realizing the functional effects of rapid chip removal and intensive internal cooling of the grinding tool; facilitating the realization of some functional structures on the circumferential tooth surface that cannot be realized due to interference in the overall mold manufacturing; enabling the grinding wheel with a large number of structures and a small circumferential width of the water tank or chip removal groove; improving the sintering efficiency and reducing the sintering cost; simple and reliable feeding; facilitating the automatic assembly of the grinding ring and the large-scale production of the grinding wheel, reducing the processing cost of the grinding wheel; improving the adaptability of the grinding wheel to high-speed grinding; improving the adaptability of the grinding wheel to finer abrasive grinding; improving the adaptability of the grinding wheel to powerful grinding; greatly improving the performance of the grinding wheel; being applicable to the manufacturing of ceramic-bonded grinding wheels; suitable for the composite structure of mutual splicing of resin tooth slices, metal tooth slices, and ceramic tooth slices, where the metal tooth slices can play a role in enhancing the strength of the grinding ring and improving the wear resistance.

[0090] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0091] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0092] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the internal communication of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0093] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0094] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0095] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A mold for manufacturing a circumferential thin-sheet tooth-joined resin grinding wheel, characterized in that, Including: a bottom frame (1), an outer frame (2), a top frame (3), a plurality of lower pressing heads (4), a plurality of upper pressing heads (5), a plurality of partition plates (6), a plurality of partition bars (7), a plurality of working layers (8) and a plurality of non-working layers (9); The bottom frame (1) and the top frame (3) are correspondingly arranged at the bottom end and the top end of the outer frame (2). A plurality of the partition plates (6) are respectively connected to a plurality of the partition bars (7). The partition plates (6) and the partition bars (7) divide the space formed by the bottom frame (1), the outer frame (2) and the top frame (3) into a plurality of chambers. A plurality of the lower pressing heads (4) are correspondingly arranged at the bottom ends of the plurality of chambers. A plurality of the upper pressing heads (5) are correspondingly arranged at the top ends of the plurality of chambers. A plurality of the working layers (8) are correspondingly arranged below a plurality of the non-working layers (9). Both the working layer (8) and the non-working layer (9) are arranged between the lower pressing head (4) and the upper pressing head (5). The partition plates (6) and the partition bars (7) are respectively connected to the bottom frame (1), the outer frame (2) and the top frame (3); The partition plate (6) is provided with a plurality of working layer partition plates (61), a plurality of non-working layer partition plates (62), a plurality of lower partition plates (63) and a plurality of concave-convex structures (65). The working layer partition plates (61), the non-working layer partition plates (62) and the lower partition plates (63) are all strip-shaped plate structures. The concave-convex structures (65) are arranged on the working layer partition plates (61) and the non-working layer partition plates (62).

2. The mold for manufacturing a circumferential thin-sheet tooth-engaged resin grinding wheel according to claim 1, characterized in that, The bottom frame (1) and the top frame (3) are annular plate structures with sizes adapted to the outer frame (2). The bottom surface and the top surface of the outer frame (2) are correspondingly abutted against the top surface of the bottom frame (1) and the bottom surface of the top frame (3). The non-working layer partition plate (62) abuts against the inner wall of the top frame (3). The lower partition plate (63) abuts against the inner wall of the bottom frame (1).

3. The mold for manufacturing a circumferential thin-sheet tooth-joined resin grinding wheel according to claim 1, characterized in that, The outer frame (2) is a tubular structure. A plurality of groups of partition plate mounting holes (21) are symmetrically arranged on the front and rear side walls of the outer frame (2). The partition plate mounting holes (21) are through holes. A plurality of the working layer partition plates (61) are correspondingly and adaptively connected to the plurality of groups of partition plate mounting holes (21).

4. The mold for manufacturing a circumferential thin-sheet tooth-joined resin grinding wheel according to claim 1, wherein The non-working layer partition plates (62) and the lower partition plates (63) are correspondingly arranged at the upper end and the lower end of the working layer partition plates (61). A plurality of the working layer partition plates (61), a plurality of the non-working layer partition plates (62) and a plurality of the lower partition plates (63) are coaxially arranged in the horizontal direction, and are correspondingly and coaxially arranged in the vertical direction. The top surface of the working layer partition plate (61) and the bottom surface of the non-working layer partition plate (62) are in a serrated shape that is adaptively connected to each other. The bottom surface of the working layer partition plate (61) abuts against the top surface of the lower partition plate (63).

5. The mold for manufacturing a circumferential thin-sheet tooth-joined resin grinding wheel according to claim 1, wherein The partition plate (6) is further provided with a plurality of partition strip mounting grooves (64). The partition strip mounting grooves (64) are in the shape of strip-shaped grooves. The plurality of partition strip mounting grooves (64) are symmetrically arranged on the left and right side walls of the plurality of working layer partition plates (61), the plurality of non-working layer partition plates (62), and the plurality of lower partition plates (63) respectively. The plurality of partition strip mounting grooves (64) on the working layer partition plates (61), the plurality of partition strip mounting grooves (64) on the non-working layer partition plates (62), and the plurality of partition strip mounting grooves (64) on the lower partition plates (63) are coaxially arranged in the horizontal direction and are coaxially arranged in one-to-one correspondence in the vertical direction.

6. The mold for manufacturing a circumferential thin-sheet tooth-engaged resin grinding wheel according to claim 5, characterized in that, The plurality of concave-convex structures (65) are correspondingly arranged on the side walls between two adjacent partition strip mounting grooves (64) of the working layer partition plate (61) and the non-working layer partition plate (62), the side walls between the frontmost partition strip mounting groove (64) of the working layer partition plate (61) and the non-working layer partition plate (62) and the inner wall of the outer frame (2), and the side walls between the rearmost partition strip mounting groove (64) of the working layer partition plate (61) and the non-working layer partition plate (62) and the inner wall of the outer frame (2).

7. The mold for manufacturing a circumferential thin-sheet tooth-engaged resin grinding wheel according to claim 5, characterized in that, The partition strip (7) is a block-shaped structure adapted to be connected to the partition strip mounting groove (64). The leftmost and rightmost partition strips (7) are respectively in contact with the inner walls of the bottom frame (1), the outer frame (2), and the top frame (3).

8. The mold for manufacturing a circumferential thin-sheet tooth-engaged resin grinding wheel according to claim 1, wherein The lower pressing head (4) and the upper pressing head (5) are both block-shaped structures. The lower pressing head (4) and the upper pressing head (5) are both arranged to be movable up and down in a plurality of chambers formed by the partition plate (6), the partition strip (7), the bottom frame (1), the outer frame (2), and the top frame (3).

9. A process for manufacturing a circumferentially thin-sheet-tooth assembled resin grinding wheel, characterized in that, Based on the mold for manufacturing a circumferential thin-sheet tooth-joined resin grinding wheel according to any one of the above claims 1 to 8, the process method for manufacturing a circumferential thin-sheet tooth-joined resin grinding wheel includes the following steps: S1: Install a plurality of partition strips (7) onto a plurality of lower partition plates (63) respectively, so that the inner wall of the bottom frame (1) is connected to the partition strips (7) and the lower partition plates (63). S2: Arrange a plurality of lower pressing heads (4) in one-to-one correspondence in a plurality of chambers formed by the bottom frame (1), the partition strips (7), and the lower partition plates (63). S3: Install a plurality of working layer partition plates (61) onto a plurality of lower partition plates (63) in one-to-one correspondence, install a plurality of partition strips (7) onto a plurality of working layer partition plates (61) respectively, and install the outer frame (2) onto the bottom frame (1), so that the partition strips (7) and the working layer partition plates (61) are connected to the inner wall of the outer frame (2). S4: Uniformly put the working layer powder material above the lower pressing head (4), and uniformly put the non-working layer powder material on the working layer powder material. S5: Install a plurality of partition strips (7) onto a plurality of non-working layer partition plates (62) respectively, adaptively connect the bottom ends of the non-working layer partition plates (62) to the top ends of the working layer partition plates (61), and install the top frame (3) onto the outer frame (2), so that the partition strips (7) and the non-working layer partition plates (62) are connected to the inner wall of the top frame (3). S6: Correspondingly arrange multiple upper pressing heads (5) in multiple chambers formed by the top frame (3), the partition bars (7), and the non-working layer partition plates (62); S7: While applying an upward force to the lower pressing head (4), apply a downward force to the upper pressing heads (5) to compact the working layer powder and the non-working layer powder; S8: Perform high-temperature sintering on the mold. After the mold cools down, remove the mold to obtain multiple toothed plates with a working layer (8) and a non-working layer (9), and structures on the side walls of the working layer (8) and the non-working layer (9) that are adapted to the concave-convex structure (65); S9: Connect the non-working layers (9) of multiple toothed plates to the grinding wheel base body, and connect the working layers (8) of multiple toothed plates to form an annular structure.

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