Combined CBN grinding wheel

Abstract

The utility model discloses a combined type CBN (cubic boron nitride) grinding wheel, which relates to the technical field of CBN grinding wheels and comprises a grinding wheel central shaft, a mounting hole is formed in the center of the upper surface of the grinding wheel central shaft, and three trapezoidal connecting plates are uniformly and fixedly mounted on the outer surface of the grinding wheel central shaft. The ends, away from the center shaft of the grinding wheel, of the three trapezoidal connecting plates are provided with base body layers, the base body layers are combined base bodies, the combined base bodies comprise the inner side base body and the outer side base body, the outer side of the outer side base body layer is provided with a grinding material layer, and three pull rings move to drive three moving rods to move. And then the three moving rods drive the three clamping rods to be separated from the interiors of the three clamping grooves, the three T-shaped plates slide out of the interiors of the three T-shaped grooves, then disassembly is completed, operation is easy, clamping is firm, CBN grinding wheel belts with different widths can be replaced conveniently so that the surfaces of parts with different widths can be ground, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of CBN grinding wheels, in particular to a combined CBN grinding wheel. Background Art

[0002] CBN grinding wheel is a superhard material coated abrasive product developed and launched with CBN as abrasive and a new manufacturing process. The difference between CBN grinding wheel and ordinary abrasive grinding wheel is that it has the softness of ordinary abrasive coated abrasives and makes full use of the high hardness of CBN. Compared with ordinary coated abrasives, CBN grinding wheel not only has the characteristics of high grinding efficiency, high durability, low grinding temperature, good surface quality, high cost performance, but also has the advantages of less dust, low noise and good working environment during use.

[0003] At present, the structure of CBN grinding wheels usually uses tempered steel as the grinding wheel base, and then pastes a CBN abrasive layer on the outer circle of the steel base. It is heavy and mostly an integrated structure, which means that it can only grind the surface of parts within a certain width range. When the surface width of the part to be grinded is smaller than the width of the grinding wheel abrasive layer, the existing CBN grinding wheel cannot meet the grinding requirements, and the part needs to be taken to a suitable grinding wheel grinding area for grinding, resulting in low practicality. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a combined CBN grinding wheel, which can solve the problem that when the surface width of the part to be ground is smaller than the width of the abrasive layer of the grinding wheel, the existing CBN grinding wheel cannot meet the grinding requirements and the part needs to be taken to a suitable grinding wheel grinding area for grinding, resulting in low practicality.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined CBN grinding wheel, comprising a grinding wheel center axis, a mounting hole is opened at the center position of the upper surface of the grinding wheel center axis, three trapezoidal connecting plates are evenly and fixedly installed on the outer surface of the grinding wheel center axis, and a base layer is arranged at one end of the three trapezoidal connecting plates away from the grinding wheel center axis, and the base layer is a combined base, and the combined base includes an inner base and an outer base, and an abrasive layer is arranged on the outside of the outer base layer.

[0008] Preferably, the inner base includes a fixing ring made of steel, which is fixedly mounted on one end of the three trapezoidal connecting plates away from the central axis of the grinding wheel, and T-shaped grooves are provided on the outer surface of the fixing ring at positions corresponding to the three trapezoidal connecting plates.

[0009] Preferably, the outer base includes a moving ring, which is arranged on the outside of the fixed ring. The moving ring is made of carbon fiber material, and T-shaped plates are fixedly installed on the inner surface of the moving ring corresponding to the positions of the three T-shaped slots. The three T-shaped plates are respectively slidably connected to the inside of the three T-shaped slots.

[0010] Preferably, the three T-shaped plates are provided with snap-fit ​​grooves on their opposite surfaces;

[0011] Among them, circular grooves are opened at positions corresponding to the three clamping grooves inside the three T-shaped grooves, springs are fixedly installed at the bottom ends of the three circular grooves, and clamping rods are fixedly installed on the ends away from each other of the three springs.

[0012] Preferably, the three clamping rods are slidably connected to the inside of the three circular grooves respectively, the three clamping rods all extend out of the inside of the circular grooves, and the ends of the three clamping rods away from the inside of the circular grooves are all arranged with inclined surfaces.

[0013] Preferably, moving rods are inserted and slidably installed at the positions of the three clamping rods on the inner surface of the fixed ring, and the far-away ends of the three moving rods are respectively fixedly connected to the opposite ends of the three clamping rods, and the opposite ends of the three moving rods extend out of the inner surface of the fixed ring, and pull rings are fixedly installed on the opposite ends of the three moving rods.

[0014] Preferably, the abrasive layer comprises a CBN grinding wheel belt, and the inner surface of the CBN grinding wheel belt is coated with super glue;

[0015] Among them, a grinding wheel belt groove is opened on the outer surface of the moving ring, the grinding wheel belt groove is adapted to the CBN grinding wheel belt, the CBN grinding wheel belt is fixed inside the grinding wheel belt groove by strong glue, and the thickness of the CBN grinding wheel belt is greater than the internal depth of the grinding wheel belt groove.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the beneficial effects of the utility model are:

[0018] (1) The combined CBN grinding wheel is inserted into the three T-shaped plates by aligning the three T-shaped plates with the inside of the three T-shaped grooves, so that the three T-shaped plates slide into the inside of the three T-shaped grooves respectively, and the three T-shaped plates push the three clamping rods into the inside of the three circular grooves, thereby causing the three springs to contract. When the three clamping grooves on the three T-shaped plates move downward to the positions of the three clamping rods, the three springs extend to bounce the three clamping rods into the inside of the three clamping grooves, thereby clamping the moving rings on the outer surfaces of the T-shaped grooves. When it is necessary to replace the moving rings of different widths, the three pull rings are pulled, and the movement of the three pull rings drives the three moving rods to move, thereby causing the three moving rods to drive the three clamping rods to disengage from the inside of the three clamping grooves, so that the three T-shaped plates slide out of the inside of the three T-shaped grooves, thereby completing the disassembly. The operation is simple and the clamping is firm, which is convenient for replacing CBN grinding wheel belts of different widths to grind the surfaces of parts of different widths, thereby improving the practicality of the device.

[0019] (2) The combined CBN grinding wheel reduces the overall weight of the grinding wheel while ensuring the strength of the grinding wheel by setting three trapezoidal connecting plates. Since the density of carbon fiber is 1.44 g / cm3 and the density of steel is 7.85 g / cm3, the use of a carbon fiber matrix in the moving ring further reduces the mass of the CBN grinding wheel. Due to the reduced weight, when the grinding speed of the grinding wheel is increased, the motor power overload is avoided, thereby improving the grinding reliability and the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0021] Figure 1 This is a schematic diagram of the structure of a combined CBN grinding wheel of the utility model;

[0022] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0023] Figure 3 for Figure 2 The enlarged schematic diagram at A in the middle;

[0024] Figure 4 This is a schematic diagram of the structure of the mobile ring of the utility model.

[0025] Figure numerals: 1. grinding wheel center axis; 2. mounting hole; 3. trapezoidal connecting plate; 4. fixed ring; 5. T-slot; 6. moving ring; 7. T-plate; 8. snap-in groove; 9. circular groove; 10. spring; 11. snap-in rod; 12. moving rod; 13. pull ring; 14. CBN grinding wheel belt; 15. grinding wheel belt groove. DETAILED DESCRIPTION

[0026] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0027] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0028] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0029] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0030] See also Figure 1-4 The utility model provides a technical solution: a combined CBN grinding wheel, including a grinding wheel center axis 1, a mounting hole 2 is opened at the center position of the upper surface of the grinding wheel center axis 1, three trapezoidal connecting plates 3 are evenly fixedly installed on the outer surface of the grinding wheel center axis 1, and the three trapezoidal connecting plates 3 are all provided with a base layer at one end away from the grinding wheel center axis 1. The base layer is a combined base, and the combined base includes an inner base and an outer base, and an abrasive layer is provided on the outer side of the outer base layer.

[0031] Furthermore, the inner base includes a fixing ring 4, which is made of steel and is fixedly mounted on one end of the three trapezoidal connecting plates 3 away from the grinding wheel center axis 1, and T-shaped grooves 5 are provided on the outer surface of the fixing ring 4 at positions corresponding to the three trapezoidal connecting plates 3.

[0032] Furthermore, the outer base includes a moving ring 6, which is sleeved on the outer side of the fixed ring 4. The moving ring 6 is made of carbon fiber, and T-shaped plates 7 are fixedly installed on the inner surface of the moving ring 6 corresponding to the positions of the three T-shaped slots 5. The three T-shaped plates 7 are respectively slidably connected to the inside of the three T-shaped slots 5. By setting three trapezoidal connecting plates 3, the overall weight of the grinding wheel is reduced while ensuring the strength of the grinding wheel. Since the density of carbon fiber is 1.44g / cm3 and the density of steel is 7.85g / cm3, the moving ring 6 adopts a carbon fiber matrix to further reduce the mass of the CBN grinding wheel. Due to the weight reduction, when the grinding speed of the grinding wheel is increased, the motor power overload is avoided, thereby improving the grinding reliability and the practicality of the device.

[0033] Furthermore, the three T-shaped plates 7 are provided with engaging grooves 8 on their opposite surfaces;

[0034] Circular grooves 9 are provided inside the three T-shaped grooves 5 at positions corresponding to the three clamping grooves 8 , springs 10 are fixedly installed at the bottom ends of the three circular grooves 9 , and clamping rods 11 are fixedly installed at the ends away from each other of the three springs 10 .

[0035] Furthermore, the three clamping rods 11 are slidably connected to the inside of the three circular grooves 9 respectively, and the three clamping rods 11 extend out of the inside of the circular groove 9, and the ends of the three clamping rods 11 away from the inside of the circular groove 9 are all arranged with inclined surfaces.

[0036] Furthermore, moving rods 12 are inserted and slidably installed at the positions of the three clamping rods 11 on the inner surface of the fixing ring 4, and the ends of the three moving rods 12 that are far away from each other are fixedly connected to the opposite ends of the three clamping rods 11 respectively. The opposite ends of the three moving rods 12 extend out of the inner surface of the fixing ring 4, and pull rings 13 are fixedly installed on the opposite ends of the three moving rods 12. By aligning the three T-shaped plates 7 with the inside of the three T-shaped grooves 5 and inserting them, the three T-shaped plates 7 slide into the inside of the three T-shaped grooves 5 respectively, and the three T-shaped plates 7 push the three clamping rods 11 into the inside of the three circular grooves 9, thereby causing the three springs 10 to contract. When the slot 8 moves downward to the position of the three clamping rods 11, the three springs 10 stretch to bounce the three clamping rods 11 into the three clamping slots 8, thereby clamping the moving ring 6 to the outer surface of the T-slot 5. When the moving ring 6 of different widths needs to be replaced, the three pull rings 13 are pulled, and the movement of the three pull rings 13 drives the three moving rods 12 to move, thereby making the three moving rods 12 drive the three clamping rods 11 to disengage from the three clamping slots 8, so that the three T-shaped plates 7 slide out of the three T-slots 5, thereby completing the disassembly. The operation is simple and the clamping is firm, which is convenient for replacing CBN grinding wheel belts 14 of different widths to grind the surfaces of parts of different widths, thereby improving the practicability of the device.

[0037] Further, the abrasive layer includes a CBN grinding wheel belt 14, and the inner surface of the CBN grinding wheel belt 14 is coated with super glue;

[0038] Among them, a grinding wheel belt groove 15 is opened on the outer surface of the moving ring 6, and the grinding wheel belt groove 15 is adapted to the CBN grinding wheel belt 14. The CBN grinding wheel belt 14 is fixed inside the grinding wheel belt groove 15 by strong glue, and the thickness of the CBN grinding wheel belt 14 is greater than the internal depth of the grinding wheel belt groove 15.

[0039] Working principle: By setting three trapezoidal connecting plates 3, the overall weight of the grinding wheel is reduced while ensuring the strength of the grinding wheel. Since the density of carbon fiber is 1.44g / cm3 and the density of steel is 7.85g / cm3, the moving ring 6 adopts a carbon fiber matrix to further reduce the mass of the CBN grinding wheel. Due to the reduced weight, when the grinding speed of the grinding wheel is increased, the motor power overload is avoided, and the reliability of grinding and the practicality of the device are improved. By aligning the three T-shaped plates 7 with the inside of the three T-shaped slots 5 and inserting them, the three T-shaped plates 7 slide into the inside of the three T-shaped slots 5 respectively, and the three T-shaped plates 7 push the three clamping rods 11 into the inside of the three circular slots 9, so that the three springs 10 are contracted. When the three engaging grooves 8 on the three T-shaped plates 7 move downward to the positions of the three engaging rods 11, the three springs 10 extend to bounce the three engaging rods 11 into the three engaging grooves 8, thereby engaging the moving ring 6 to the outer surface of the T-shaped groove 5. When the moving ring 6 of different widths needs to be replaced, the three pull rings 13 are pulled, and the three pull rings 13 move to drive the three moving rods 12 to move, thereby making the three moving rods 12 drive the three engaging rods 11 to disengage from the three engaging grooves 8, making the three T-shaped plates 7 slide out of the three T-shaped grooves 5, thereby completing the disassembly. The operation is simple and the engaging is firm, which is convenient for replacing the CBN grinding wheel belts 14 of different widths to grind the surfaces of parts of different widths, thereby improving the practicability of the device.

[0040] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A combined CBN grinding wheel, comprising a grinding wheel center axis (1), characterized in that: A mounting hole (2) is provided at the center position of the upper surface of the grinding wheel center axis (1); three trapezoidal connecting plates (3) are evenly and fixedly installed on the outer surface of the grinding wheel center axis (1); and a base layer is provided at one end of the three trapezoidal connecting plates (3) away from the grinding wheel center axis (1), and the base layer is a combined base; Wherein, the combined substrate comprises an inner substrate and an outer substrate, and an abrasive layer is arranged outside the outer substrate layer.

2. A combined CBN grinding wheel according to claim 1, characterized in that: The inner base comprises a fixing ring (4) made of steel. The fixing ring (4) is fixedly mounted on one end of the three trapezoidal connecting plates (3) away from the grinding wheel center axis (1), and T-shaped grooves (5) are provided on the outer surface of the fixing ring (4) at positions corresponding to the three trapezoidal connecting plates (3).

3. A combined CBN grinding wheel according to claim 1, characterized in that: The outer base body comprises a moving ring (6), the moving ring (6) is sleeved on the outer side of the fixed ring (4), the moving ring (6) is made of carbon fiber material, and T-shaped plates (7) are fixedly installed at positions corresponding to the three T-shaped grooves (5) on the inner surface of the moving ring (6), and the three T-shaped plates (7) are respectively slidably connected to the inside of the three T-shaped grooves (5).

4. A combined CBN grinding wheel according to claim 3, characterized in that: The three T-shaped plates (7) are provided with engaging grooves (8) on their opposite surfaces; Circular grooves (9) are provided inside the three T-shaped grooves (5) at positions corresponding to the three clamping grooves (8), springs (10) are fixedly installed at the bottom ends of the three circular grooves (9), and clamping rods (11) are fixedly installed at the ends away from each other of the three springs (10).

5. A combined CBN grinding wheel according to claim 4, characterized in that: The three clamping rods (11) are respectively slidably connected to the inside of the three circular grooves (9); the three clamping rods (11) all extend out of the inside of the circular groove (9); and the ends of the three clamping rods (11) away from the inside of the circular groove (9) are all arranged with inclined surfaces.

6. A combined CBN grinding wheel according to claim 3, characterized in that: The inner surface of the fixed ring (4) is slidably mounted with movable rods (12) at positions corresponding to the three clamping rods (11); the ends of the three movable rods (12) that are far away from each other are fixedly connected to the opposite ends of the three clamping rods (11); the opposite ends of the three movable rods (12) extend out of the inner surface of the fixed ring (4); and pull rings (13) are fixedly mounted on the opposite ends of the three movable rods (12).

7. The combined CBN grinding wheel according to claim 1, characterized in that: The abrasive layer comprises a CBN grinding wheel belt (14), and the inner surface of the CBN grinding wheel belt (14) is coated with a strong glue; A grinding wheel belt groove (15) is provided on the outer surface of the moving ring (6), the grinding wheel belt groove (15) is matched with the CBN grinding wheel belt (14), the CBN grinding wheel belt (14) is fixedly installed inside the grinding wheel belt groove (15) by strong adhesive bonding, and the thickness of the CBN grinding wheel belt (14) is greater than the inner depth of the grinding wheel belt groove (15).

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