Anti-rotation tool

Abstract

The utility model discloses a purpose lies in the annular working layer of the structure grinding tool of prior art is easy to separate from the base body, produces the circumferential relative displacement, influences the normal progress of grinding work, causes the low grinding efficiency, the poor grinding quality, has the hidden danger of deficiency, provides a kind of anti-rotation grinding tool, this anti-rotation grinding tool includes the working layer of grinding material and the base body for supporting working layer, working layer is set on base body, base body at least has annular portion, constitutes annular base body, working layer at least has annular portion, constitutes annular working layer, base body and working layer between through annular base body and annular working layer are connected, at least one axial through hole as anti-rotation groove is set on the outer circumferential surface of annular base body, adopts the anti-rotation grinding tool of utility model structure, can prevent annular working layer and base body outer circumferential between generating the same direction relative movement, annular working layer and base body are not easy to slip and fall off in the grinding process.

Description

Technical Field

[0001] This utility model belongs to the field of grinding tool technology, and specifically relates to anti-rotation grinding tools. Background Technology

[0002] Annular diamond drill bits with a ring-shaped grinding layer are commonly used for drilling glass and require high strength and impact resistance. The quality of the drill bit plays a crucial role in the drilling operation. Existing annular grinding layer drill bits have a base structure consisting of a matrix and a grinding layer. The grinding layer is annular, and the matrix includes a columnar mounting shank and a cup-shaped support. The support and mounting shank are coaxially fixed as a single unit. The cup-shaped bottom of the support is coaxially fixed to the mounting shank, and the grinding layer is located at the top of the support and coaxially fixed to it. Water supply channels are provided on the mounting shank and support to supply grinding fluid to the drill bit. Currently, the support and grinding layer can be fixedly connected by sintering or welding. When using sintering, the grinding layer is prone to detachment from the support, causing circumferential relative movement between the grinding layer and the matrix, commonly known as slippage. In some cases, the annular grinding layer may even detach from the matrix, posing a safety hazard and affecting the grinding force, resulting in poor grinding quality and low grinding efficiency.

[0003] In addition, superhard diamond grinding tools for edge grinding, commonly used for grinding the edges of ceramics and glass, have a basic structure consisting of a ring-shaped substrate and a ring-shaped grinding layer. The ring-shaped grinding layer is placed outside the ring-shaped substrate, and the two are fixedly connected by sintering. Grinding grooves can be provided on the working layer, or they can be omitted. This type of grinding tool with this structure also suffers from the technical problem of the working layer easily detaching from the substrate. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing grinding tools, such as the annular working layer easily detaching from the substrate, causing circumferential relative displacement, affecting the normal operation of grinding, resulting in low grinding efficiency, poor grinding quality, and safety hazards, by providing an anti-rotation grinding tool.

[0005] The technical solution to the technical problem solved by this utility model is as follows: An anti-rotation abrasive tool includes a working layer as a grinding material and a substrate for supporting the working layer. The working layer is disposed on the substrate, and the substrate has at least an annular portion to form an annular substrate. The working layer also has at least an annular portion to form an annular working layer. The substrate and the working layer are connected by the annular substrate and the annular working layer. At least one axial through hole as an anti-rotation groove is provided on the outer circumferential surface of the annular substrate. The inner circumferential surface of the annular working layer has axial protrusions of a size, shape, and number adapted to the axial through hole. The axial protrusions are located inside the axial through hole. The working layer is a powder layer, and the substrate is a molding material. The working layer and the powder layer are fixedly connected by sintering, thereby fixing the axial through hole and the axial protrusions by sintering. An annular groove is provided circumferentially at one end of the outer circumference of the annular substrate opposite to the end of the an axial through hole. An annular protrusion is provided circumferentially at one end of the inner circumferential surface of the annular working layer opposite to the end of the an axial protrusion. The annular protrusion is located in and fills the annular groove. The annular protrusion is fixedly connected to the substrate by sintering. Axial protrusions are part of the working layer, and annular protrusions are part of the working layer; The abrasive tool is a drill bit, and also includes an annular main working layer. The end faces of the main working layer and the annular working layer are integrally sintered together. The inner diameter of the main working layer is smaller than the inner diameter of the annular working layer, and their outer diameters are equal. It also includes a cup-shaped base. The end of the cup-shaped base is integrally connected to the annular base. The outer diameter of the cup-shaped base is larger than the outer diameter of the annular base, and the inner diameter of the cup-shaped base is equal to the inner diameter of the annular base. The inner diameter of the cup-shaped matrix is ​​greater than or equal to the inner diameter of the main working layer, and / or the outer diameter of the cup-shaped matrix is ​​less than or equal to the outer diameter of the annular working layer; The axial through hole is one of a semi-circular hole, a multi-semi-circular hole, or a few semi-circular holes; The bottom diameter of the annular groove is equal to the outer diameter of the axial through hole; The abrasive is an end-face abrasive and also includes a disc-shaped main working layer. The main working layer and the annular working layer are integrally sintered and connected end-to-end. The inner diameter of the main working layer is smaller than the inner diameter of the annular working layer, and their outer diameters are equal. The abrasive tool is an edge grinding tool, the working layer is an annular working layer, the working layer is an annular base, and the width of the annular working layer and the annular base are equal; Grinding grooves are provided on the outer circumferential surface of the annular working layer. The grinding grooves are one of trapezoidal grooves, figure-eight grooves, U-shaped grooves, and V-shaped grooves.

[0006] The advantages and beneficial effects of this utility model are as follows: The anti-rotation grinding tool with this utility model has an anti-rotation groove on the outer circumference of the annular base, and a working layer is provided in the anti-rotation groove. The working layer located in the anti-rotation groove is equivalent to a positioning pin located in the anti-rotation groove. Together with the anti-rotation groove, they form a structure in which the working layer and the base interlock, which increases the bonding strength between the annular working layer and the annular base. Therefore, it can prevent the annular working layer and the outer circumference of the base from moving in the same direction. During the grinding process, the annular working layer and the base are not easy to slip or fall off. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the structure of the anti-rotation grinding tool after sintering of the annular substrate and the working layer according to an embodiment of the present invention; Figure 2 for Figure 1 A top view diagram; Figure 3 This is a schematic diagram of the structure of the anti-rotation grinding tool after sintering the annular substrate and the working layer according to another embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of the anti-rotation grinding tool after sintering the annular substrate and the working layer according to another embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of the anti-rotation grinding tool after sintering the annular substrate and the working layer, according to another embodiment of this utility model.

[0008] Explanation of reference numerals in the attached figures 1-Handle-shaped substrate; 2-Main working layer; 4-Anti-rotation groove; 5-Cup-shaped substrate; 6-Annular substrate; 7-Annular groove; 8-Annular working layer. Detailed Implementation

[0009] The present invention will be further described in detail below through specific embodiments. The following embodiments are only descriptive and not limiting, and should not be used to limit the protection scope of the present invention.

[0010] like Figure 1-5 As shown, the anti-rotation abrasive of this utility model includes a substrate and a working layer. Before sintering, the substrate is a molding material, and the working layer is a powder layer. The working layer and the substrate are fixedly connected by sintering to obtain the abrasive. The substrate has at least an annular portion, and the working layer has at least an annular portion. The annular portion of the working layer is fixed to the entire outer circumference or part of the outer circumference of the annular portion of the substrate by a wrapping connection. Depending on the purpose of the abrasive, it may include drill bits, end-face abrasives, and edge abrasives. For ease of description, the annular portion of the substrate is referred to as the annular substrate 6, and the annular portion of the working layer is referred to as the annular working layer 8.

[0011] Multiple axial through holes are provided along the axial direction of the annular substrate on the outer circumference of one end, serving as anti-rotation grooves 4. Multiple outwardly protruding ridges on the annular working layer serve as anti-rotation pins, which fill the anti-rotation grooves. The annular working layer and the annular substrate are sintered together to form a single unit, thus the anti-rotation pins and anti-rotation grooves are sintered together to form a single unit. The shape, position, and size of the anti-rotation pins are adapted to the anti-rotation grooves and fill them completely. The anti-rotation pins and anti-rotation grooves constitute the anti-rotation structure. The structure of this utility model has a working layer in the axial through hole, which is also the anti-rotation groove. The working layer in the anti-rotation groove is equivalent to an axial pin between the working layer and the annular base, so that the working layer and the annular base form an interlocking structure in the circumferential direction, which restricts the relative movement of the working layer and the base in the circumferential direction. Therefore, the working layer and the annular base can be firmly connected, preventing the working layer from moving relative to the annular base in the circumferential direction, thus preventing the phenomenon that the working layer and the workpiece cannot be ground normally.

[0012] Furthermore, on the annular substrate, on the outer circumference opposite to the anti-rotation groove, a circumferentially extending annular groove 7 is provided. The annular groove is preferably connected to the axial through hole. On the inner circumferential surface of the annular working layer, at the end opposite to the axial protrusion, an annular ridge is provided circumferentially. The shape, position, size, and number of the annular ridge are adapted to the shape, position, size, and number of the annular groove. The annular ridge is located within and fills the annular groove. The annular groove and the annular ridge, acting as tensile grooves, constitute a tensile structure. Both the axial ridge and the annular ridge are part of the working layer and are integral with it. The annular ridge on the inner circumferential surface of the annular working layer and the annular groove on the annular substrate form an interlocking structure in the axial direction, axially restricting the movement of the working layer in the axial direction. With the above structure, the working layer in the tensile groove and the annular groove are interlocked, which can prevent the working layer from axially separating from the substrate. The working layer in the anti-rotation groove acts as a pin, preventing the working layer from rotating with the workpiece and thus preventing grinding. The two work together to limit the axial movement and circumferential displacement of the working layer relative to the substrate, making the grinding operation of the grinding wheel stable and eliminating safety hazards.

[0013] Preferably, the outer diameter of the bottom of the annular groove of the substrate is equal to the outer diameter of its axial through hole. That is, there is no axial through hole in the annular groove. This structure facilitates the machining of the anti-rotation groove and the axial through hole, improving work efficiency. Preferably, there are two or more axial through holes, evenly distributed along the circumference of the convex ring, matching its number and position. There are at least two axial convex ridges, evenly distributed along the inner circumference of the large inner diameter end of the annular working layer.

[0014] like Figure 1 and Figure 2As shown, when the abrasive is a drill bit, the working layer 2 is generally annular, and the base is generally cup-shaped, comprising a cup-shaped base 5 and an annular base 6. One end of the annular base 6 is integrally fixedly connected to the open end of the cup-shaped base. The outer diameter of the annular base 6 is smaller than the outer diameter of the cup-shaped base, while the inner diameters are equal, and the two are coaxially arranged. A handle-shaped base 1 is located at the bottom of the cup-shaped base 5. The annular base, cup-shaped base, and handle-shaped base are coaxially arranged. The working layer includes an annular working layer 8 and a similarly annular main working layer 2. The annular working layer 8 is located at one end of the main working layer 2. The inner diameter of the annular working layer is larger than the inner diameter of the main working layer, while the outer diameters are the same, and they are coaxially arranged. The annular working layer is located on the outer circumferential surface of the annular base. The end face of the annular working layer 8 is fixedly connected to the end face of the cup-shaped base by sintering, and the two are coaxially arranged.

[0015] like Figure 3 and Figure 4 As shown, when the abrasive is a face abrasive, its main working layer has a disc structure, forming a disc-shaped working layer. Alternatively, its main working layer can be annular, forming an annular working layer. Countersunk holes are provided on the end face of the disc-shaped or annular working layer that connects to the substrate to form an annular working layer. The connection structure between the substrate of the face abrasive and the disc-shaped working layer is the same as that of a drill bit.

[0016] like Figure 5 As shown, when the grinding wheel is an edge grinding wheel, also known as a grinding edge grinding wheel, the working layer is an annular working layer, and the substrate is an annular substrate. The width of the working layer is the same as or less than the width of the substrate. The annular working layer is located on the outer circumferential surface of the annular substrate. The axial through-holes, i.e., the anti-rotation grooves, constituting the anti-rotation structure, are located on the outer surface of the annular substrate. The axial protrusions are located on the inner circumferential surface of the annular working layer. The annular grooves, constituting the tensile structure, are located on the outer surface of the annular substrate, and the annular protrusions are located on the inner circumferential surface of the annular working layer. Grinding grooves can be provided circumferentially on the outer circumferential surface of the annular working layer. The cross-section of the grinding grooves can be one of trapezoidal, V-shaped, U-shaped, or V-shaped grooves.

[0017] Of course, the structure of this abrasive tool is not only suitable for abrasive tools with superhard abrasives such as diamond, but also for abrasive tools with ordinary abrasives, such as diamond.

Claims

1. An anti-rotation abrasive tool, comprising a working layer as a grinding material and a substrate for supporting the working layer, wherein the working layer is disposed on the substrate, characterized in that: The substrate has at least an annular portion, forming an annular substrate. The working layer has at least an annular portion, forming an annular working layer. The substrate and the working layer are connected by the annular substrate and the annular working layer. At least one axial through hole as an anti-rotation groove is provided on the outer circumferential surface of the annular substrate. The inner circumferential surface of the annular working layer has axial protrusions of a size, shape, and number that are adapted to the axial through hole. The axial protrusions are located inside the axial through hole. The working layer is a powder layer, and the substrate is a molding material. The working layer and the powder layer are fixedly connected by sintering, thereby fixing the axial through hole and the axial protrusions by sintering.

2. The anti-rotation abrasive tool as described in claim 1, characterized in that, An annular groove is provided circumferentially at one end of the outer circumference of the annular substrate opposite to the end where the axial through hole is provided. An annular protrusion is provided circumferentially at one end of the inner circumferential surface of the annular working layer opposite to the end where the axial protrusion is provided. The annular protrusion is located in and fills the annular groove. The annular protrusion is fixedly connected to the substrate by sintering.

3. The anti-rotation abrasive as described in claim 2, characterized in that, The axial ridge is part of the working layer, and the annular ridge is part of the working layer.

4. An anti-rotation abrasive as described in claim 1 or 2, characterized in that, The abrasive tool is a drill bit, and also includes an annular main working layer. The end faces of the main working layer and the annular working layer are integrally sintered together. The inner diameter of the main working layer is smaller than the inner diameter of the annular working layer, and their outer diameters are equal. It also includes a cup-shaped substrate. The end of the cup-shaped substrate is integrally connected to the annular substrate. The outer diameter of the cup-shaped substrate is larger than the outer diameter of the annular substrate, and the inner diameter of the cup-shaped substrate is equal to the inner diameter of the annular substrate.

5. The anti-rotation abrasive tool as described in claim 4, characterized in that, The inner diameter of the cup-shaped matrix is ​​greater than or equal to the inner diameter of the main working layer, and / or the outer diameter of the cup-shaped matrix is ​​less than or equal to the outer diameter of the annular working layer.

6. The anti-rotation abrasive tool as described in claim 1, characterized in that, The axial through hole is one of a semi-circular hole, a multi-semi-circular hole, or a few semi-circular holes.

7. The anti-rotation abrasive tool as described in claim 2, characterized in that, The bottom diameter of the annular groove is equal to the outer diameter of the axial through hole.

8. The anti-rotation abrasive tool as described in claim 1, characterized in that, The abrasive is an end-face abrasive and also includes a disc-shaped main working layer. The main working layer and the annular working layer are integrally sintered and connected end-to-end. The inner diameter of the main working layer is smaller than the inner diameter of the annular working layer, and their outer diameters are equal.

9. The anti-rotation abrasive tool as described in claim 1, characterized in that, The grinding tool is an edge grinding tool, the working layer is an annular working layer, the working layer is an annular substrate, and the width of the annular working layer and the annular substrate are equal.

10. The anti-rotation abrasive tool as described in claim 9, characterized in that, Grinding grooves are provided on the outer circumferential surface of the annular working layer. The grinding grooves are one of trapezoidal grooves, figure-eight grooves, U-shaped grooves, and V-shaped grooves.

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