Adjustment device for adjusting the center height of grinding spindle and ultra-precision grinding device

Abstract

The present invention relates to the technical field of machine tool accessories, and provides an adjustment device and an ultra-precision grinding device for adjusting the center height of a grinding spindle, wherein the adjustment device for adjusting the center height of the grinding spindle comprises a base, a clamping seat, an adjustment block, and an adjustment rod, wherein the clamping seat is slidably connected to the base, and the sliding direction is perpendicular to the base's reference plane; the adjustment block is arranged between the clamping seat and the base, and the adjustment block can slide relative to the base, and the surfaces facing the adjustment block and the clamping seat are inclined planes inclined relative to the reference plane, and the distance between one end and the reference plane at both ends along the sliding direction of the adjustment block is greater than or less than the distance between the other end and the reference plane; the axis of the adjustment rod is parallel to the sliding direction of the adjustment block, the first end of the adjustment rod is rotatably connected to the base, and the adjustment rod is threadedly connected to the adjustment block. Such an arrangement solves the problems of low adjustment accuracy and cumbersome operation in the prior art when adjusting the center height of the grinding spindle.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tool accessories, in particular to an adjusting device for adjusting the center height of a grinding spindle and an ultra-precision grinding device. Background Art

[0002] At present, ultra-precision machining technology plays a vital role in the fields of national defense industry, aerospace, microelectronics industry, etc. As the materials of components in various fields tend to be harder and brittle, the shapes tend to be more complex, and the sizes tend to be smaller and thinner, higher requirements are also placed on surface roughness and surface accuracy. Ultra-precision grinding, which is usually the last step in the process chain, can not only improve machining efficiency, but also obtain ultra-smooth part surfaces. In ultra-precision grinding, for workpieces of different sizes and blank allowances, ensuring that the center of rotation of the grinding wheel and the center of the workpiece are at the same height is a necessary condition to ensure the quality of the machined surface. The grinding wheel is set on the grinding spindle and the center of rotation of the grinding wheel coincides with the axis of the grinding spindle. Therefore, higher requirements are placed on the adjustment accuracy of the height of the grinding spindle center.

[0003] In the prior art, when adjusting the center height of the grinding spindle, the grinding device generally adopts the method of adding a pad or gasket under the spindle seat. However, when adding the pad or gasket, it is necessary to repeatedly try pads or gaskets of different thicknesses. During the trial process, the spindle seat needs to be repeatedly disassembled, which is cumbersome and time-consuming, and has low adjustment efficiency.

[0004] Therefore, how to solve the problem of complicated operation in adjusting the center height of the grinding spindle in the prior art has become an important technical problem to be solved by those skilled in the art. Summary of the Invention

[0005] The present invention provides an adjusting device for adjusting the center height of a grinding spindle and an ultra-precision grinding device, which are used to solve the defects of low adjustment accuracy and complicated operation in the prior art when adjusting the center height of a grinding spindle.

[0006] The present invention provides an adjusting device for adjusting the center height of a grinding spindle, comprising:

[0007] a base having a reference surface;

[0008] A clamping seat for clamping the grinding spindle, the clamping seat being arranged on the reference plane, the clamping seat being slidably connected to the base, and the sliding direction being perpendicular to the reference plane;

[0009] an adjusting block disposed between the clamping seat and the base, and capable of sliding relative to the base, with a sliding direction parallel to the reference plane; a surface of the adjusting block facing the clamping seat and a surface of the clamping seat facing the adjusting block being inclined planes arranged obliquely relative to the reference plane; and at two ends of the inclined plane along the sliding direction of the adjusting block, a distance between one end and the reference plane is greater or less than a distance between the other end and the reference plane;

[0010] The adjusting rod has an axis parallel to the sliding direction of the adjusting block, a first end of the adjusting rod is rotatably connected to the base, and the adjusting rod is threadedly connected to the adjusting block.

[0011] According to the adjusting device for adjusting the center height of a grinding spindle provided by the present invention, the inclination angle of the inclined plane relative to the reference plane is 1° to 7°.

[0012] According to the present invention, an adjusting device for adjusting the center height of a grinding spindle further includes:

[0013] A baffle is provided on a side of the clamping seat facing the working end of the grinding spindle, and the baffle is connected to the clamping seat. The baffle can block the gap between the clamping seat, the adjustment block and the base.

[0014] According to the present invention, an adjusting device for adjusting the center height of a grinding spindle further includes:

[0015] An elastic member is provided between the adjusting block and the base, and the elastic member is configured to enable the adjusting block to have a tendency to approach the first end of the adjusting rod.

[0016] According to an adjusting device for adjusting the center height of a grinding spindle provided by the present invention, the clamping seat comprises:

[0017] a chuck having a clamping space for the grinding spindle to pass through, the chuck having positioning portions on both sides, the surfaces of the positioning portions facing the base being parallel to the reference plane, and the center line of the clamping space being located on the surfaces of the positioning portions facing the base;

[0018] The support seat is slidably connected to the base, and a storage space is provided on the side of the support seat away from the base. The jacket extends into the storage space, and the surface of the positioning portion facing the base overlaps the support seat. The positioning portion is fixedly connected to the support seat, and there is a gap between the outer surface of the jacket and the side wall of the storage space.

[0019] According to the adjusting device for adjusting the center height of a grinding spindle provided by the present invention, the gap between the outer surface of the jacket and the side wall of the accommodating space is 1 mm to 3 mm.

[0020] According to an adjustment device for adjusting the center height of a grinding spindle provided by the present invention, a cooling channel is provided inside the support seat, and a liquid inlet and a liquid outlet are provided on the support seat. The liquid inlet is connected to one end of the cooling channel, and the liquid outlet is connected to the other end of the cooling channel.

[0021] According to an adjusting device for adjusting the center height of a grinding spindle provided by the present invention, the liquid inlet and the liquid outlet are arranged on a side wall of the support seat away from the accommodating space, and the cooling channel includes:

[0022] a first channel extending in a direction parallel to a sliding direction of the adjusting block relative to the base, wherein a first end of the first channel is connected to the liquid inlet, and a second end of the first channel passes through the support seat;

[0023] a second channel extending in a direction perpendicular to the extending direction of the first channel, wherein a first end of the second channel is connected to the liquid outlet, a second end of the second channel passes through the support seat, and the first channel is connected to the second channel;

[0024] a first blocking member, fixedly disposed at the second end of the first channel;

[0025] The second blocking member is fixedly disposed at the second end of the second channel.

[0026] According to an adjusting device for adjusting the center height of a grinding spindle provided by the present invention, a guide structure is provided between the adjusting block and the base, and the guide structure is configured to guide the sliding of the adjusting block relative to the base.

[0027] The present invention also provides an ultra-precision grinding device, comprising the above-mentioned adjusting device for adjusting the center height of the grinding spindle.

[0028] The present invention provides an adjustment device for adjusting the center height of a grinding spindle, comprising a base, a clamping seat, an adjustment block, and an adjustment rod. The base is used to connect to the horizontal displacement platform of the grinding device. The side of the base away from the horizontal displacement platform is a reference plane. The clamping seat is used to clamp the grinding spindle. The clamping seat is set on the reference plane of the base and is slidably connected to the base, with the sliding direction of the clamping seat relative to the base being perpendicular to the reference plane. When the base and the horizontal displacement platform are installed in the grinding device, the reference plane is set in the horizontal direction, and the sliding direction of the clamping seat relative to the base is set in the vertical direction. By sliding the clamping seat relative to the base, the height of the clamping seat can be adjusted, thereby adjusting the center height of the grinding spindle. The adjustment block is set between the clamping seat and the base, and the adjustment block can slide relative to the base. The sliding direction of the adjustment block relative to the base is parallel to the reference plane. The surface of the adjustment block facing the clamping seat and the surface of the clamping seat facing the adjustment block are inclined planes arranged with respect to the reference plane. At either end of the inclined plane along the sliding direction of the adjustment block, the distance between one end and the reference plane is greater or less than the distance between the other end and the reference plane. The axis of the adjustment rod is parallel to the sliding direction of the adjustment block, the first end of the adjustment rod is rotatably connected to the base, and the adjustment rod is threadedly connected to the adjustment block. By screwing the adjustment rod to rotate the adjustment rod relative to the base, the adjustment block can be driven to slide relative to the base along the reference plane. Since the clamping seat can only slide relative to the base in a direction perpendicular to the reference plane, when the adjustment block slides relative to the base, the interaction between the adjustment block and the clamping seat causes the clamping seat to slide in a direction away from the base, thereby increasing the height of the clamping seat. When the adjustment block slides relative to the base in the opposite direction, the clamping seat slides in a direction close to the base under the action of its own weight and the weight of the grinding spindle, thereby decreasing the height of the clamping seat. With this arrangement, the center height of the grinding spindle can be adjusted by adjusting the height of the clamping seat. During the adjustment process, the adjustment operation can be completed by simply screwing the adjusting rod without disassembling the clamping seat. The operation is simple and convenient, and the adjustment efficiency is high, which solves the problem of cumbersome operation in adjusting the center height of the grinding spindle in the prior art.

[0029] Furthermore, the ultra-precision grinding device provided by the present invention also has the various advantages described above because it is provided with the adjustment device for adjusting the center height of the grinding spindle as described above. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 11 is a schematic structural diagram of the adjusting device for adjusting the center height of the grinding spindle provided by the present invention at a first viewing angle;

[0032] Figure 2 2 is a schematic structural diagram of the adjusting device for adjusting the center height of the grinding spindle provided by the present invention at a second viewing angle;

[0033] Figure 3 is a cross-sectional view of an adjusting device for adjusting the center height of a grinding spindle provided by the present invention;

[0034] Figure 4 is a schematic diagram of the inclined plane provided by the present invention;

[0035] Figure 5 It is a structural schematic diagram of the base provided by the present invention;

[0036] Figure 6 It is a structural schematic diagram of the support base provided by the present invention;

[0037] Figure 7 is a cross-sectional view of the support base provided by the present invention;

[0038] Figure 8 It is a schematic structural diagram of the jacket provided by the present invention.

[0039] Reference numerals:

[0040] 1. Base; 2. Reference plane; 3. Adjustment block; 4. Inclined plane; 5. Adjustment rod; 6. Baffle; 7. Elastic member; 8. Jacket; 9. Positioning part; 10. Support seat; 11. Accommodation space; 12. Liquid inlet; 13. Liquid outlet; 14. First channel; 15. Second channel; 16. First blocking member; 17. Second blocking member; 18. Horizontal displacement platform; 19. Side plate; 20. Limit pin; 21. Limit groove; 22. Slide groove. DETAILED DESCRIPTION

[0041] To make the objectives, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0042] The following combination Figures 1 to 8 The adjusting device for adjusting the center height of a grinding spindle according to the present invention is described.

[0043] like Figures 1 to 8As shown, the adjusting device for adjusting the center height of the grinding spindle provided by the embodiment of the present invention includes a base 1, a clamping seat, an adjusting block 3 and an adjusting rod 5.

[0044] Specifically, base 1 is connected to the grinding device's horizontal displacement platform 18, which is used to adjust the position of base 1 within the horizontal plane. The surface of base 1 facing away from horizontal displacement platform 18 serves as reference surface 2. Specifically, mounting holes can be provided on base 1, and bolts can be used to connect base 1 to horizontal displacement platform 18.

[0045] The clamping seat is used to clamp the grinding spindle. The clamping seat is set on the reference surface 2 of the base 1 and is slidably connected to the base 1. The sliding direction of the clamping seat relative to the base 1 is perpendicular to the reference surface 2.

[0046] Specifically, a pair of side plates 19 can be provided on the base 1, the pair of side plates 19 being respectively located on both sides of the clamping seat, the lower ends of the side plates 19 being fixedly connected to the base 1, a limiting pin 20 being provided on the side plate 19, a limiting groove 21 being provided on the side of the clamping seat facing the side plate 19, the extending direction of the limiting groove 21 being perpendicular to the reference plane 2, the limiting pin 20 extending into the limiting groove 21 and being able to slide back and forth relative to the limiting groove 21. Through the cooperation between the limiting pin 20 and the limiting groove 21, the sliding connection between the clamping seat and the base 1 is realized, and the sliding guide of the clamping seat relative to the base 1 can be provided.

[0047] To ensure that the clamping seat can slide smoothly relative to the base 1, a certain gap can be set between the clamping seat and the side plate 19. For example, the gap between the side of the clamping seat and the side plate 19 can be set to 0.5 mm to reduce the friction between the clamping seat and the side plate 19.

[0048] When the base 1 and the horizontal displacement platform 18 are installed on the grinding device, the reference surface 2 is set in the horizontal direction, and the sliding direction of the clamping seat relative to the base 1 is set in the vertical direction. By sliding the clamping seat relative to the base 1, the height of the clamping seat can be adjusted, and then the center height of the grinding spindle can be adjusted.

[0049] The adjusting block 3 is disposed between the clamping seat and the base 1 . The adjusting block 3 can slide relative to the base 1 , and the sliding direction of the adjusting block 3 relative to the base 1 is parallel to the reference plane 2 .

[0050] The surface of the adjusting block 3 facing the clamping seat and the surface of the clamping seat facing the adjusting block 3 are inclined planes 4 arranged obliquely relative to the reference plane 2. The adjusting block 3 contacts the surface of the clamping seat to ensure the stability of the clamping seat and reduce the wear on the adjusting block 3 and the clamping seat during the adjustment process. At both ends of the inclined plane 4 along the sliding direction of the adjusting block 3, the distance between one end and the reference plane 2 is greater or less than the distance between the other end and the reference plane, that is, the distances between different positions on the inclined plane 4 along the sliding direction of the adjusting block 3 and the base surface are different, and gradually change from one end to the other. When the adjusting block 3 slides relative to the base 1, the clamping seat can slide in a direction perpendicular to the reference plane.

[0051] The axis of the adjusting rod 5 is parallel to the sliding direction of the adjusting block 3. The first end of the adjusting rod 5 is rotatably connected to the base 1, and the adjusting rod 5 is threadedly connected to the adjusting block 3. By screwing the adjusting rod 5 to rotate the adjusting rod 5 relative to the base 1, the adjusting block 3 can be driven to slide relative to the base 1 along the reference plane 2. Since the clamping seat can only slide relative to the base 1 in a direction perpendicular to the reference plane 2, when the adjusting block 3 slides relative to the base 1, the interaction between the adjusting block 3 and the clamping seat causes the clamping seat to slide in a direction away from the base 1, thereby increasing the height of the clamping seat. When the adjusting block 3 slides relative to the base 1 in the opposite direction, the clamping seat slides in a direction closer to the base 1 under the action of its own weight and the weight of the grinding spindle, thereby decreasing the height of the clamping seat.

[0052] That is, by rotating the adjusting rod 5 at a certain angle, the adjusting block 3 can be fine-moved along the axis of the grinding spindle, and the inclination angle of the inclined plane 4 can be converted into fine adjustment of the center height of the grinding spindle.

[0053] With such a setting, the center height of the grinding spindle can be adjusted by adjusting the height of the clamping seat. During the adjustment process, it is only necessary to screw the adjusting rod 5 to complete the adjustment operation without disassembling the clamping seat, which simplifies the adjustment process, is simple and convenient to operate, and has high adjustment efficiency, solving the problem of cumbersome operation when adjusting the center height of the grinding spindle in the prior art.

[0054] In this embodiment, the surface of the adjustment block 3 facing the clamping seat and the surface of the clamping seat facing the adjustment block 3 are arranged as mutually parallel inclined planes 4, and the inclination angle of the inclined plane 4 relative to the reference plane 2 is set within a range of 1° to 7°. The smaller the inclination angle of the inclined plane 4 relative to the reference plane 2, the smaller the distance the clamping seat slides relative to the base 1 when the adjustment block 3 slides the same distance relative to the base 1, that is, the smaller the height change of the clamping seat, and the higher the adjustment accuracy of the center height of the grinding spindle. By setting the inclination angle of the inclined plane 4 relative to the reference plane 2 to be as small as possible, the adjustment accuracy of the center height of the grinding spindle can be ensured as much as possible.

[0055] For the threaded connection between the adjusting rod 5 and the adjusting block 3, an external thread can be provided on the adjusting rod 5, and a threaded hole can be provided on the adjusting block 3, and the threaded hole is adapted to the external thread on the adjusting rod 5. When the adjusting block 3 needs to slide the same distance relative to the base 1, the smaller the pitch of the external thread on the adjusting rod 5, the larger the rotation angle of the adjusting rod 5 needs to be.

[0056] In this embodiment, the angle of inclination of the inclined plane 4 relative to the reference plane 2 is set to 1°, and the pitch of the external thread on the adjusting rod 5 is set to 0.8 mm. At this point, with each rotation of the adjusting rod 5, the clamping seat slides up and down 14 microns relative to the base 1, and accordingly, the center height of the grinding spindle changes by 14 microns.

[0057] Every time the adjusting rod 5 rotates 1°, the center height of the grinding spindle changes by 0.039 microns, which has a high adjustment accuracy.

[0058] In other words, by controlling the adjustment angle of the adjustment rod 5 to less than 25.7°, the adjustment amount of the grinding spindle center height can be controlled to less than 1 micron, enabling adjustments of 1 micron or less. When the adjustment amount of the grinding spindle center height is 1 micron, the required rotation angle of the adjustment rod 5 is 25.7°, which is not too small and is relatively easy to control during the rotation process.

[0059] Although some existing grinding devices use a precision manual displacement platform to adjust the center height of the grinding spindle, this is limited by the accuracy of the micrometer, making it difficult to achieve adjustments of 1 micron or less. In this embodiment, by controlling the adjustment angle of the adjustment rod 5 to below 25.7°, the center height of the grinding spindle can be adjusted to below 1 micron, achieving high adjustment accuracy, easy control of the adjustment process, and convenient operation.

[0060] Specifically, when the inclination angle of the inclined plane 4 relative to the reference plane 2 is 1°, in order to ensure that the adjusting rod 5 can make the clamping seat have a sliding amount of 1 micron to 5 microns when rotating 90 degrees, the pitch of the adjusting rod 5 needs to be controlled within the range of 0.23 mm to 1.15 mm.

[0061] In this embodiment of the present invention, the adjustment device for adjusting the center height of the grinding spindle further includes a baffle 6, which is disposed on the side of the clamping base facing the working end of the grinding spindle and is connected to the clamping base. The working end of the grinding spindle is the end of the grinding spindle that is connected to the grinding wheel, and the baffle 6 and the grinding wheel are located on the same side of the clamping base.

[0062] During the operation of the grinding wheel, a large amount of grinding chips will be generated. The baffle 6 is set on the side of the clamping seat facing the grinding wheel. The baffle 6 is used to block the gap between the clamping seat, the adjusting block 3 and the base 1. This can effectively prevent the grinding chips and grinding fluid from entering the above-mentioned gap, and avoid wear on the clamping seat, the adjusting block 3 and the base 1.

[0063] Reference Figure 2 and Figure 4 The upper end of the baffle 6 is connected to the clamping seat, and the lower end of the baffle 6 extends below the reference plane 2 of the base 1. The size of the baffle 6 needs to ensure that when the clamping seat is adjusted to the highest position, the lower end of the baffle 6 is still below the reference plane 2 of the base 1.

[0064] In this embodiment, the adjusting device for adjusting the center height of the grinding spindle also includes an elastic member 7, which is arranged between the adjusting block 3 and the base 1, and is used to make the adjusting block 3 tend to approach the first end of the adjusting rod 5. When the adjusting block 3 slides in a direction away from the first end of the adjusting rod 5, it can prevent the adjusting block 3 from being disconnected from the adjusting rod 5.

[0065] Specifically, a compression spring can be selected as the elastic member 7, the axis of the compression spring is parallel to the sliding direction of the adjustment block 3, the first end of the compression spring is connected to the adjustment block 3, and the second end is relatively fixed to the base 1. Specifically, the second end of the compression spring can be connected to the baffle 6.

[0066] Two compression springs are arranged in parallel, and the axes of the two compression springs are parallel.

[0067] In this embodiment, the clamping base includes a jacket 8 and a support base 10. The jacket 8 has a clamping space for the grinding spindle to pass through. The support base 10 is slidably connected to the base 1. A receiving space 11 is provided on the side of the support base 10 away from the base 1, into which the jacket 8 can extend.

[0068] Positioning portions 9 are formed integrally with the jacket 8 on either side. The surface of the positioning portions 9 facing the base 1 is parallel to the reference plane 2. The jacket 8 extends into the receiving space 11 of the support base 10, with the surface of the positioning portions 9 facing the base 1 overlapping the support base 10. The positioning portions 9 are then fixedly connected to the support base 10.

[0069] The center line of the clamping space is located on the surface of the positioning part 9 facing the base 1. When the base 1 and the horizontal displacement platform 18 are installed in the grinding device, and the grinding spindle is installed in the clamping space of the sleeve 8, the center line of the grinding spindle is flush with the lower surface of the positioning part 9, that is, the center line of the grinding spindle is flush with the upper end surface of the support seat 10.

[0070] During operation of the grinding device, the temperature of the grinding spindle fluctuates, and the temperature of the jacket 8 also fluctuates due to these fluctuations. This temperature change in the jacket 8 also alters its dimensions. Aligning the centerline of the clamping space with the lower surface of the positioning portion 9 prevents the temperature fluctuations of the jacket 8 from affecting the center height of the grinding spindle. This, in turn, reduces the impact of the adjustment mechanism used to adjust the center height of the grinding spindle during operation.

[0071] It should be noted that the jacket 8 and the support seat 10 may also be made of a material whose external dimensions are less affected by temperature changes, so as to further reduce the impact of temperature changes.

[0072] Furthermore, the size of the accommodating space 11 is larger than the external size of the jacket 8. After the jacket 8 is installed on the support seat 10, there is a gap between the outer surface of the jacket 8 and the side wall of the accommodating space 11, which can reduce the heat transfer between the jacket 8 and the support seat 10, reduce the temperature change of the support seat 10, and reduce the change in the external size of the support seat 10, thereby further reducing the impact on the center height of the grinding spindle.

[0073] In addition, the gap between the outer surface of the jacket 8 and the side wall of the accommodating space 11 can also leave a margin for deformation of the jacket 8 .

[0074] In this embodiment, the gap between the outer surface of the jacket 8 and the side wall of the accommodating space 11 is controlled within a range of 1 mm to 3 mm. Specifically, the gap between the outer surface of the jacket 8 and the side wall of the accommodating cavity is 1 mm.

[0075] The inclination angle of the inclined plane 4 in this embodiment is small, and the sleeve 8 and the grinding spindle can partially extend into the interior of the support seat 10, which is beneficial to reducing the overall height of the adjustment device for adjusting the center height of the grinding spindle, and is more suitable for highly integrated ultra-precision grinding devices.

[0076] In a further embodiment, a cooling channel is provided within the support base 10. A liquid inlet 12 and a liquid outlet 13 are provided on the support base 10. The liquid inlet 12 communicates with one end of the cooling channel, and the liquid outlet 13 communicates with the other end of the cooling channel. The cooling channel is connected to a coolant supply device via the liquid inlet 12 and the liquid outlet 13, allowing the coolant to circulate within the support base 10. Heat exchange between the coolant and the support base 10 can reduce the temperature of the support base 10, further minimizing temperature variations in the support base 10 and changes in the external dimensions of the support base 10, thereby further minimizing the impact on the center height of the grinding spindle.

[0077] In this embodiment, the liquid inlet 12 and the liquid outlet 13 are arranged on the side wall of the support base 10 away from the accommodating space 11 , and the cooling channel includes a first channel 14 , a second channel 15 , a first blocking member 16 and a second blocking member 17 .

[0078] The extension direction of the first channel 14 is parallel to the sliding direction of the adjustment block 3 relative to the base 1. The first end of the first channel 14 is connected to the liquid inlet 12. The second end of the first channel 14 passes through the support seat 10. The first blocking member 16 is fixedly arranged at the second end of the first channel 14 to block the second end of the first channel 14.

[0079] The extension direction of the second channel 15 is perpendicular to the extension direction of the first channel 14. The first end of the second channel 15 is connected to the liquid outlet 13. The second end of the second channel 15 passes through the support seat 10. The second blocking member 17 is fixedly set at the second end of the second channel 15 to block the second end of the second channel 15.

[0080] The first channel 14 is connected to the second channel 15. The coolant enters the first channel 14 through the liquid inlet 12, flows through the second channel 15, and is discharged from the liquid outlet 13. During the coolant circulation inside the support base 10, heat exchange can be performed with the support base 10.

[0081] The first channel 14 and the second channel 15 are blind holes, and can be processed outside the support base 10 , which is convenient and has low processing difficulty.

[0082] Specifically, the first blocking member 16 and the second blocking member 17 may be, but are not limited to, screw plugs or copper plugs.

[0083] In this embodiment, a guide structure is provided between the adjusting block 3 and the base 1 for guiding the sliding of the adjusting block 3 relative to the base 1 .

[0084] Specifically, the guide structure includes a slide groove 22 and a slider. The slide groove 22 is provided on the base 1, and its length is parallel to the sliding direction of the adjustment block 3 relative to the base 1. The slider is embedded in the slide groove 22 and can slide back and forth within the slide groove 22. The slider is provided on the adjustment block 3, and when the adjustment block 3 slides relative to the base 1, the interaction between the slider and the slide groove 22 can guide the sliding of the adjustment block 3.

[0085] On the other hand, an embodiment of the present invention further provides an ultra-precision grinding device, comprising the adjusting device for adjusting the center height of the grinding spindle provided in any of the above-mentioned embodiments. The adjusting device for adjusting the center height of the grinding spindle provided in the above-mentioned embodiments has the advantages of conveniently adjusting the center height of the grinding spindle and high adjustment efficiency. Therefore, the ultra-precision grinding device in this embodiment has the advantages of conveniently adjusting the center height of the grinding spindle and high adjustment efficiency. The derivation process of the beneficial effects of the ultra-precision grinding device in the embodiment of the present invention is generally similar to the derivation process of the beneficial effects of the adjusting device for adjusting the center height of the grinding spindle described above, and therefore will not be repeated here.

[0086] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An adjusting device for adjusting the center height of a grinding spindle, characterized in that: include: a base having a reference surface; 4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The bosses comprise a through-hole, a screw bolt, and a nut. The adjusting block is arranged between the clamping seat and the base, and the adjusting block can slide relative to the base, and the sliding direction is parallel to the reference plane, the surface of the adjusting block facing the clamping seat and the surface of the clamping seat facing the adjusting block are inclined planes arranged obliquely relative to the reference plane, and the distance between one end and the reference plane at two ends along the sliding direction of the adjusting block is greater than or smaller than the distance between the other end and the reference plane, a cooling channel is provided inside the support seat, and a liquid inlet and a liquid outlet are provided on the support seat, the liquid inlet is connected with one end of the cooling channel, and the liquid outlet is connected with the other end of the cooling channel, and the cooling channel is connected to a cooling liquid supply device through the liquid inlet and the liquid outlet, so that the cooling liquid circulates inside the support seat, and the cooling liquid and the support seat perform heat exchange; The adjusting rod has an axis parallel to the sliding direction of the adjusting block, a first end of the adjusting rod is rotatably connected to the base, and the adjusting rod is threadedly connected to the adjusting block.

2. The adjusting device for adjusting the center height of the grinding spindle according to claim 1, characterized in that: The inclination angle of the inclined plane relative to the reference plane is 1° to 7°.

3. The adjusting device for adjusting the center height of the grinding spindle according to claim 1, characterized in that: Also includes: A baffle is provided on a side of the clamping seat facing the working end of the grinding spindle, and the baffle is connected to the clamping seat. The baffle can block the gap between the clamping seat, the adjustment block and the base.

4. The adjusting device for adjusting the center height of a grinding spindle according to any one of claims 1 to 3, characterized in that: Also includes: An elastic member is provided between the adjusting block and the base, and the elastic member is configured to enable the adjusting block to have a tendency to approach the first end of the adjusting rod.

5. The adjusting device for adjusting the center height of the grinding spindle according to claim 1, characterized in that: A gap between the outer surface of the jacket and the side wall of the accommodating space is 1 mm to 3 mm.

6. The adjusting device for adjusting the center height of a grinding spindle according to claim 1, characterized in that: The liquid inlet and the liquid outlet are arranged on a side wall of the support base away from the accommodating space, and the cooling channel includes: a first channel extending in a direction parallel to a sliding direction of the adjusting block relative to the base, wherein a first end of the first channel is connected to the liquid inlet, and a second end of the first channel passes through the support seat; a second channel extending in a direction perpendicular to the extending direction of the first channel, wherein a first end of the second channel is connected to the liquid outlet, a second end of the second channel passes through the support seat, and the first channel is connected to the second channel; a first blocking member, fixedly disposed at the second end of the first channel; The second blocking member is fixedly disposed at the second end of the second channel.

7. The adjusting device for adjusting the center height of a grinding spindle according to claim 1, characterized in that: A guide structure is provided between the adjusting block and the base, and the guide structure is provided to guide the sliding of the adjusting block relative to the base.

8. An ultra-precision grinding device, characterized in that: The invention comprises an adjusting device for adjusting the center height of a grinding spindle according to any one of claims 1 to 7.

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