Grinding wheel device

Abstract

The utility model discloses a grinding wheel grinding device, which belongs to the mechanical precision machining grinding tool technology. In the existing precision machining, multiple clamping is labor-consuming and time-consuming, and it is difficult to take into account both surface quality and grinding efficiency when completing grinding at one time. The utility model uses at least two grinding wheels coaxially configured to grind the workpiece together, and each grinding wheel has a grinding characteristic different from that of another grinding wheel. During grinding, at least two grinding wheels with different grinding characteristics grind the workpiece at the same time, such as performing rough grinding and fine grinding at the same time. The workpiece is clamped at one time, and different grinding processes are completed at one time as the workpiece moves relative to the grinding wheel in the axial feed. Both efficiency and surface quality are taken into account during grinding.

Description

Technical Field

[0001] The utility model belongs to the mechanical precision machining grinding tool technology, in particular to a grinding wheel grinding device. Background Art

[0002] Precision machining requires precision grinding. When multiple clamping is required, such as when rough grinding and fine grinding are performed separately, the repeated positioning and clamping of the grinding surface is labor-intensive and time-consuming.

[0003] When grinding is completed in one go, if the focus is on grinding efficiency, it will be difficult to ensure the grinding surface quality; if the focus is on grinding surface quality, the grinding efficiency will be lost.

[0004] A grinding process that can achieve one-time positioning and take both efficiency and surface quality into consideration during grinding is currently scarce. The grinding wheel grinding device of the present invention is an indispensable tool for this process. Utility Model Content

[0005] The technical problem to be solved and the technical task proposed by the utility model are to overcome the defects of the existing grinding process that multiple clamping is labor-consuming and time-consuming, and it is difficult to take into account both the surface quality and the grinding efficiency when completing the grinding in one time, and to provide a grinding wheel grinding device suitable for one-time positioning, which takes into account both the efficiency and the surface quality of the grinding process.

[0006] To achieve the above-mentioned purpose, the grinding wheel grinding device of the utility model comprises at least two grinding wheels, wherein the at least two grinding wheels are coaxially arranged for grinding a workpiece together, and at least one of the grinding wheels has grinding characteristics different from the other grinding wheel, wherein the grinding characteristics include grinding efficiency and grinding accuracy.

[0007] Accordingly, during the grinding process, at least two grinding wheels with different grinding characteristics are fed axially during operation to grind the workpiece at the same time, such as performing rough grinding and fine grinding at the same time, the workpiece is clamped at one time, and different grinding processes are completed at one time. Grinding takes into account both efficiency and surface quality.

[0008] Preferably, the at least two grinding wheels are arranged in the order of decreasing grinding efficiency and increasing grinding accuracy along the axial direction. During grinding, as the workpiece moves relative to the grinding wheel in the axial direction, rough grinding and fine grinding can be performed sequentially, taking into account both grinding efficiency and grinding accuracy.

[0009] Preferably, the different grinding characteristics are reflected in at least one of the material of the abrasive, the particle size of the abrasive, the bonding agent of the grinding wheel, the hardness of the grinding wheel, and the porosity of the grinding wheel. Accordingly, according to different grinding processing requirements, grinding wheels with different grinding characteristics are selected to achieve higher grinding quality and grinding efficiency.

[0010] Preferably, at least one grinding wheel has a grinding surface with a notch to accommodate chips and cool the surface.

[0011] In one embodiment, each grinding wheel has consistent grinding characteristics.

[0012] In another embodiment, at least one grinding wheel has an annular wheel body, the annular wheel body has an outer annular surface and an inner annular surface, the annular wheel body includes a base portion and a difference portion that are made as one body, the base portion and the difference portion extend together to the outer annular surface and / or the inner annular surface so that the outer annular surface and / or the inner annular surface both include grinding surfaces with different grinding characteristics, and the grinding surfaces with different grinding characteristics include a base grinding surface formed by the base portion and a difference grinding surface formed by the difference portion. This solution allows the same grinding wheel to simultaneously perform grinding processes with different functions, such as rough grinding and fine grinding, by giving the outer annular surface and / or the inner annular surface grinding surfaces with different grinding characteristics.

[0013] Preferably, the difference parts include at least two kinds of difference grinding surfaces corresponding to the different grinding characteristics of the difference parts are formed on the outer annular surface or / and the inner annular surface, thereby achieving more precise grinding processing.

[0014] Preferably, the base grinding surface and the differential grinding surface are evenly spaced on the circumference of the outer annular surface or / and the inner annular surface. During the grinding process, the base grinding surface and the differential grinding surface always work in a complementary manner, rather than tending to one type of grinding, to ensure grinding efficiency and quality.

[0015] Preferably, the outer annular surface and / or the inner annular surface is a continuous annular surface, so that grinding surfaces with different grinding characteristics can continuously grind the workpiece surface during the grinding process.

[0016] Preferably, the base part is continuously distributed, and the difference part is dispersed relative to the base part. Accordingly, the base part is used as a basis to form a support for the difference part, thereby ensuring the strength and rigidity of the entire annular wheel body and resisting deformation of the annular wheel body.

[0017] The utility model arranges at least two grinding wheels coaxially for grinding the workpiece together, at least one of the grinding wheels has a grinding characteristic different from that of the other grinding wheel, and during the grinding process, at least two grinding wheels with different grinding characteristics grind the workpiece at the same time, such as performing rough grinding and fine grinding at the same time, the workpiece is clamped at one time, and different grinding processes are completed at one time. Both efficiency and surface quality are taken into consideration during grinding.

[0018] At least one grinding wheel of the utility model has an outer annular surface and an inner annular surface and is embodied as an annular grinding wheel. The annular wheel body includes a base part and a differential part which are made into one body. The base part and the differential part extend together to the outer annular surface and / or the inner annular surface so that the outer annular surface and / or the inner annular surface both include grinding surfaces with different grinding characteristics. The grinding surfaces with different grinding characteristics include a base grinding surface formed by the base part and a differential grinding surface formed by the differential part. During grinding, different grinding processes can be simultaneously realized by the same grinding wheel, and different grinding processes can be completed at one time. It is suitable for one-time positioning, and a grinding process that takes into account both efficiency and surface quality during grinding.

[0019] The utility model provides a notch on the grinding surface of at least one grinding wheel to play the role of chip storage and cooling, thereby ensuring the performance of the grinding wheel and the grinding quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the grinding wheel grinding device of Example 1 of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a grinding wheel grinding device according to Embodiment 2 of the present utility model;

[0022] Figure 3 It is a schematic diagram of the axial orthographic projection of an annular grinding wheel of the utility model;

[0023] Figure 4 for Figure 3 A schematic cross-sectional view of the annular grinding wheel shown;

[0024] Figure 5 It is a cross-sectional schematic diagram of the second annular grinding wheel of the utility model;

[0025] Figure 6 It is a cross-sectional schematic diagram of the third annular grinding wheel of the utility model;

[0026] Figure 7 It is a schematic diagram of the axial orthographic projection of the fourth annular grinding wheel of the utility model;

[0027] Figure 8 for Figure 7 A schematic cross-sectional view of the annular grinding wheel shown;

[0028] Fig. 9 It is a cross-sectional schematic diagram of the fifth annular grinding wheel of the utility model;

[0029] Fig.10 It is a cross-sectional schematic diagram of a sixth annular grinding wheel of the utility model;

[0030] Fig.11 It is a schematic diagram of the axial orthographic projection of the seventh annular grinding wheel of the utility model;

[0031] Fig.12 for Fig.11 A schematic cross-sectional view of the annular grinding wheel shown;

[0032] Fig.13 This is a schematic diagram of the appearance of an eighth annular grinding wheel of the utility model;

[0033] Fig.14 It is a schematic diagram of the appearance of the ninth annular grinding wheel of the utility model;

[0034] Fig.15 It is a schematic diagram of an axial orthographic projection of a tenth annular grinding wheel of the utility model;

[0035] Fig.16 for Fig.15 AA section view;

[0036] Description of the numbers in the figure:

[0037] S0 pressure plate, S1 first grinding wheel, S2 second grinding wheel;

[0038] 100 is an outer ring surface, 101 is an axial section profile of the outer ring surface;

[0039] 200 inner ring surface, 101 outer ring surface axial section profile;

[0040] 300 Ring wheel body:

[0041] 310 base part, 311 base grinding surface,

[0042] 320 difference part, 321 difference grinding surface,

[0043] 322 first difference portion, 323 first difference grinding surface,

[0044] 324 second difference portion, 325 second difference grinding surface,

[0045] 330 gap. DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0047] The terms "including" and "having" and any variations thereof in the specification and claims of the present utility model are intended to cover non-exclusive inclusions. For example, a method or product comprising a series of technical features is not necessarily limited to those technical features clearly listed, but may also include other technical features that are not clearly listed and can be included in the method or product.

[0048] In the description of the present utility model, it is necessary to understand that the technical features defined by the terms "first", "second" and the like with sequential concepts are only for the purpose of clearly describing the defined technical features so that the defined technical features can be clearly distinguished from other technical features, but do not represent such naming in actual implementation, and therefore cannot be understood as a limitation of the present utility model.

[0049] The present invention is described in detail below in conjunction with specific embodiments and drawings.

[0050] Example 1

[0051] like Figure 1 As shown, the grinding wheel grinding device includes a first grinding wheel S1 and a second grinding wheel S2. The first grinding wheel S1 and the second grinding wheel S2 are coaxially configured to grind the workpiece together. In order to ensure reliable and firm assembly, the coaxial pressure plate S0 is used to axially press the grinding wheel. The first grinding wheel and the second grinding wheel have different grinding characteristics, and the grinding characteristics include grinding efficiency and grinding accuracy. Moreover, when the first grinding wheel and the second grinding wheel grind the workpiece together, according to the movement of the workpiece and the grinding wheel, high-efficiency, low-precision rough grinding can be performed first, and then low-efficiency, high-precision fine grinding can be performed, such as the first grinding wheel performs high-efficiency, low-precision rough grinding, and the second grinding wheel performs low-efficiency, high-precision fine grinding. Accordingly, when more grinding wheels are coaxially configured, they are configured in the order of decreasing grinding efficiency and increasing grinding accuracy along the axial direction.

[0052] Each grinding wheel has consistent grinding characteristics. Different grinding wheels have different grinding characteristics, which are reflected in at least one of the different grain sizes, components and porosity of the abrasives.

[0053] Example 2

[0054] like Figure 2 As shown, compared with Example 1, the difference between this embodiment and Example 1 is that the grinding surfaces of the first grinding wheel and the second grinding wheel are provided with notches 330. The rest of the structure of this embodiment is the same as that of Example 1 and will not be described in detail.

[0055] The coaxially arranged grinding wheels in the above-mentioned embodiments can be replaced by any grinding wheel of the following structures.

[0056] Grinding wheel 1

[0057] like Figure 3-4As shown, the grinding wheel has an outer annular surface 100 and an inner annular surface 200. The annular means that the axial projection of the inner and outer edges of the grinding wheel grinding device has a continuous or discontinuous arc. When the arc is continuous, it forms a complete circle, and when the arc is discontinuous, it is located on the same circle. Accordingly, the outer annular surface 100 and the inner annular surface 200 define a ring wheel body 300.

[0058] The grinding wheel, the annular wheel body 300 includes a base part 310 and a difference part 320 which are made into one body, wherein the base part 310 and the difference part 320 both contain abrasives, pore agents and binders and are sintered into one body. The difference between the base part 310 and the difference part 320 in any one of the abrasives, pore agents and binders can make the base part and the difference part have differences in grinding characteristics. Accordingly, the base part 310 and the difference part 320 extend together to the outer annular surface 100 so that the outer annular surface 100 includes grinding surfaces with different grinding characteristics, and these grinding surfaces with different grinding characteristics include a base grinding surface 311 formed by the base part 310 and a difference grinding surface 321 formed by the difference part 320.

[0059] Moreover, the base grinding surface 311 and the difference grinding surface 321 are evenly spaced on the circumference of the outer annular surface 100. Their arc lengths are substantially equal. The outer annular surface 100 is a continuous annular surface. The base portion 310 is continuously distributed and connected to form a complete area, and the difference portion 320 is dispersed relative to the base portion 310 along the outer annular surface 100 of the grinding wheel grinding device.

[0060] The grinding wheel has grinding surfaces with different grinding characteristics which can be used for one of rough grinding, semi-fine grinding and fine grinding respectively, thereby realizing two types of grinding with one grinding wheel.

[0061] In this embodiment, the axial cross-section (a cross-section obtained by cutting a plane passing through the axis) of the outer annular surface 100 has an arc shape, and the axial cross-section of the inner annular surface 200 has a straight line shape.

[0062] Grinding wheel 2

[0063] like Figure 5 As shown, the grinding wheel Figure 3-4 The difference between the grinding wheel 1 shown in FIG. 1 and FIG. 1 is that a gap 330 is provided between adjacent grinding surfaces of the outer annular surface 100 with different grinding characteristics. The rest of the structure of the grinding wheel is similar to that of FIG. Figure 3-4 The grinding wheels 1 shown are the same and will not be described in detail.

[0064] Grinding wheel 3

[0065] like Figure 6 As shown, the grinding wheel Figure 3-4The difference compared with the grinding wheel 1 shown is that the difference portion 320 includes a first difference portion 322 and a second difference portion 324, and a first difference grinding surface 323 corresponding to the first difference portion 322 and a second difference grinding surface 325 corresponding to the second difference portion 324 are formed on the outer annular surface 100. The first difference portion 322 and the second difference portion 324 differ in any one of the abrasive, the pore agent and the binder, so that the first difference portion and the second difference portion have differences in grinding characteristics. In addition, a gap 330 is provided between adjacent grinding surfaces of different grinding characteristics on the outer annular surface 100. The rest of the structure of the grinding wheel is the same as that of the embodiment of the present invention. Figure 3-4 The grinding wheels 1 shown are the same and will not be described in detail.

[0066] The grinding surfaces of the grinding wheel with different grinding characteristics can be used for one of rough grinding, semi-fine grinding and fine grinding respectively, so that three types of grinding can be achieved with one grinding wheel.

[0067] Grinding wheel 4

[0068] like Figure 7-8 As shown, the grinding wheel Figure 3-4 The difference between the grinding wheel 1 shown in FIG. 1 and FIG. 1 is that the difference portion 320 of the grinding wheel is dispersed along the inner annular surface of the grinding wheel grinding device relative to the base portion 310. The rest of the structure of the grinding wheel is the same as that of FIG. Figure 3-4 The grinding wheels 1 shown are the same and will not be described in detail.

[0069] In this embodiment, the axial cross-sectional profile of the outer annular surface 100 is a straight line, and the axial cross-sectional profile of the inner annular surface 200 is an arc.

[0070] Grinding wheel 5

[0071] like Fig. 9 As shown, the grinding wheel Figure 5 The difference between the grinding wheel 2 shown in FIG. 2 is that the difference portion 320 of the grinding wheel is dispersed along the inner annular surface of the grinding wheel grinding device relative to the base portion 310. The rest of the structure of the grinding wheel is the same as that of FIG. Figure 5 The grinding wheel 2 shown is the same and will not be described in detail.

[0072] In this embodiment, the axial cross-sectional profile of the outer annular surface 100 is a straight line, and the axial cross-sectional profile of the inner annular surface 200 is an arc.

[0073] Grinding wheel 6

[0074] like Fig.10 As shown, the grinding wheel Figure 6 The difference between the grinding wheel 3 shown in FIG. 1 and FIG. 2 is that the difference portion 320 of the grinding wheel is dispersed along the inner annular surface of the grinding wheel grinding device relative to the base portion 310. The rest of the structure of the grinding wheel is the same as that of FIG. Figure 6 The grinding wheels 3 shown are the same and will not be described in detail.

[0075] In this embodiment, the axial cross-sectional profile of the outer annular surface 100 is a straight line, and the axial cross-sectional profile of the inner annular surface 200 is an arc.

[0076] Example 7

[0077] like Figure 11-12 As shown, the grinding wheel Figure 3-4 The difference between the grinding wheel 1 shown in FIG. 1 is that the difference portion 320 of the grinding wheel is also distributed along the inner annular surface of the grinding wheel grinding device relative to the base portion 310. The rest of the structure of the grinding wheel is the same as that of FIG. Figure 3-4 The grinding wheels 1 shown are the same and will not be described in detail.

[0078] In this embodiment, the axial cross-sectional profile of the outer annular surface 100 is an arc, and the axial cross-sectional profile of the inner annular surface 200 is an arc.

[0079] The aforementioned grinding wheels can grind the workpiece surface using the inner ring surface or the outer ring surface according to the needs.

[0080] In addition to the axial cross-sectional profile of the outer annular surface 100 and the axial cross-sectional profile of the inner annular surface 200 specifically shown in the above embodiments, the axial cross-sectional profile of the outer annular surface 100 is any one of a straight line, an arc, a triangle, a trapezoid, a hyperbola, an ellipse, etc., and the axial cross-sectional profile of the inner annular surface 200 is any one of a straight line, an arc, a triangle, a trapezoid, a hyperbola, an ellipse, etc. Fig.13 In the eighth type of annular grinding wheel shown in FIG. 1 , the axial cross-sectional profile of the outer annular surface 100 is a straight line, and the axial cross-sectional profile of the inner annular surface 200 is an arc; Fig.14 As shown in the ninth type of annular grinding wheel, the axial section profile of the outer annular surface 100 is a straight line, and the axial section profile of the inner annular surface 200 is a triangle; Figure 15-16 In the tenth type of annular grinding wheel, the axial section profile 101 of the outer annular surface 100 is a straight line, and the axial section profile 201 of the inner annular surface 200 is an arc. To avoid redundancy, examples are not given one by one.

[0081] Taking precision screw grinding as an example, rough grinding and fine grinding are often required. If the same grinding wheel is used for grinding, and a grinding wheel with strong cutting function is selected, the ground product will have lower quality dimensional accuracy and surface accuracy; if a grinding wheel with high surface quality is selected, the grinding efficiency will be too slow. If the rough grinding and fine grinding are performed twice (using different grinding wheels), it is difficult to repeat the positioning of the two grindings.

[0082] The grinding wheel grinding device of the utility model adopts the grinding wheel of any of the aforementioned structures, and also only needs to be positioned and clamped once, and both efficiency and surface quality of the workpiece are taken into consideration during grinding.

[0083] High-speed grinding is the development direction of high-efficiency grinding and precision grinding. When the outer ring surface of the grinding wheel is used for industrial grinding, it is in a free state and lacks necessary support. It is easy to deform and be damaged by external forces. Therefore, due to the strength of the grinding wheel, the safe linear speed of the grinding wheel during grinding is maintained within 60m / s.

[0084] However, since it is easy to increase the spindle speed of the grinder, another advantage of the utility model is that the inner annular surface of the annular grinding wheel can be used to grind the workpiece at high speed. At this time, the outer diameter of the grinding wheel is tightened, so that the grinding wheel rotates at high speed along with the spindle of the grinder. When the inner annular surface of the grinding wheel contacts the surface of the workpiece for grinding, the external force of the entire grinding wheel is improved. Therefore, under the same strength, the same grinding wheel can easily overcome the strength limit of the grinding wheel, making the grinding wheel speed greater than 60m / s, achieving high-speed grinding, improving efficiency and quality.

Claims

1. A grinding wheel grinding device, characterized by: The invention comprises at least two grinding wheels, which are coaxially arranged for grinding a workpiece together, and at least one of the grinding wheels has different grinding characteristics from the other grinding wheel, wherein the grinding characteristics include grinding efficiency and grinding accuracy.

2. The grinding wheel grinding device according to claim 1, characterized in that: The at least two grinding wheels are arranged in the axial direction in the order of decreasing grinding efficiency and increasing grinding accuracy.

3. The grinding wheel grinding device according to claim 1 or 2, characterized in that: The different grinding characteristics are reflected in at least one of the material of the abrasive, the particle size of the abrasive, the bonding agent of the grinding wheel, the hardness of the grinding wheel, and the size and amount of the porosity of the grinding wheel.

4. The grinding wheel grinding device according to claim 1 or 2, characterized in that: At least one grinding wheel has a grinding surface provided with a notch (330).

5. The grinding wheel grinding device according to claim 1 or 2, characterized in that: Each grinding wheel has consistent grinding characteristics.

6. The grinding wheel grinding device according to claim 1 or 2, characterized in that: At least one grinding wheel has an annular wheel body (300), the annular wheel body (300) having an outer annular surface (100) and an inner annular surface (200), the annular wheel body comprising a base portion (310) and a differential portion (320) formed as one body, the base portion (310) and the differential portion (320) extending together to the outer annular surface (100) and / or the inner annular surface (200) so that the outer annular surface and / or the inner annular surface both comprise grinding surfaces with different grinding characteristics, the grinding surfaces with different grinding characteristics comprising a base grinding surface (311) formed by the base portion (310) and a differential grinding surface (321) formed by the differential portion (320).

7. The grinding wheel grinding device according to claim 6, characterized in that: The difference portion (320) includes at least two types and forms difference grinding surfaces corresponding to different grinding characteristics of each difference portion on the outer annular surface (100) or / and the inner annular surface (200).

8. The grinding wheel grinding device according to claim 6, characterized in that: The base grinding surface (311) and the differential grinding surface (321) are evenly spaced and distributed on the circumference of the outer annular surface (100) or / and the inner annular surface (200).

9. The grinding wheel grinding device according to claim 6, characterized in that: The outer annular surface (100) and / or the inner annular surface (200) are continuous annular surfaces.

10. The grinding wheel grinding device according to claim 6, characterized in that: The base part (310) is distributed continuously, and the difference part (320) is distributed dispersedly relative to the base part.

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