A fast-adjustable sinusoidal magnetic table and standard spacer

Abstract

The utility model provides a quickly adjustable sinusoidal magnetic table and a standard pad, comprising: a base, the upper end of which forms a flat adjustment surface; a rotating table, the top of which forms a working surface, and one side of its bottom is pivotally connected to the adjustment surface through a rotating shaft; a pair of angle fixing members, which are arranged on both sides of the rotating table and the base; a contact shaft, which is arranged on the side of the bottom of the rotating table opposite to the rotating shaft and is distributed parallel to the rotating shaft, and is used to overlap with the standard pad to limit the rotating table to form a rotation angle corresponding to the sine value marked on the standard pad; wherein the contact shaft includes a clamping area. The utility model transforms the contact shaft that contacts the standard pad into a clamping fixing structure that can elastically clamp both sides of the standard pad, thereby enabling the standard pad and the contact shaft to be quickly positioned and clamped, thereby ensuring the stability and accuracy of the standard pad during the adjustment process of the sinusoidal magnetic table, and effectively avoiding the error caused by the displacement of the pad in the traditional way.

Description

Technical Field

[0001] The utility model relates to the technical field of sine tables, in particular to a quickly adjustable sine magnetic table and a standard cushion block. Background Art

[0002] In the field of mold parts manufacturing, bevel processing is a key technology, especially when facing small workpieces or thin plate materials. Traditionally, bevel processing relies on special tools such as magnetic sine bars, magnetic sine tables, and grinding wheel bevel dressers. The use process of these tools usually involves placing the workpiece on a measuring table, and then achieving the desired angle of inclination by accurately placing a high-precision gauge block on one side under the measuring table. Finally, the workpiece is fixed with a fixture to complete the subsequent grinding process.

[0003] However, the above operation has significant limitations. First, the traditional measurement method is highly dependent on the combined use of a series of precision standard pads, which not only increases the complexity of the operation, but also may introduce additional human errors. Second, in order to meet the processing requirements of different angles, the operator must manually calculate and adjust the height of the pad. This process often involves the splicing of multiple standard pads, which greatly reduces the adjustment efficiency and overall processing speed.

[0004] Therefore, there is still room for improvement in the flexibility, convenience and processing efficiency of existing technologies. Innovative solutions are urgently needed to overcome the above challenges and achieve more efficient and precise slope processing.

[0005] In view of this, the inventor specially designed a quickly adjustable sinusoidal magnetic table and a standard pad, and this case was thus created. Utility Model Content

[0006] In order to solve the above problems, one of the technical solutions of the utility model is as follows:

[0007] A rapidly adjustable sinusoidal magnetic table, comprising:

[0008] A base, the upper end of which forms a flat adjustment surface;

[0009] A rotating table, the top of which forms a working surface, and one side of the bottom of which is pivotally connected to the adjustment surface via a rotating shaft;

[0010] A pair of angle fixing members, provided on both sides of the rotating platform and the base, for positioning the rotating angle of the rotating platform relative to the base;

[0011] A contact axis is arranged on the side of the bottom of the rotating table opposite to the rotating axis and is distributed parallel to the rotating axis, and is used to overlap with the standard pad to limit the rotating table to form a rotation angle corresponding to the sine value marked on the standard pad;

[0012] Wherein, the contact shaft comprises a clamping area which can elastically clamp both sides of the standard cushion block.

[0013] Preferably, the contact shaft includes a fixed sleeve fixed to the bottom of the rotating table, an adjusting shaft fixed to the inner side of the fixed sleeve and passing through one end, and a clamping sleeve slidably mounted on the other end of the adjusting shaft. The interior of the adjusting shaft is hollow and is provided with an elastic member for driving the clamping sleeve to move toward the fixed sleeve. The clamping area is formed between the clamping sleeve and the fixed sleeve.

[0014] Preferably, the fixing sleeve comprises an internally hollow sleeve body and a sealing cover embedded in one end of the sleeve body, the inner side of the sealing cover is provided with a connecting end extending along its axial direction, the connecting end penetrates into the adjusting shaft and is threadedly connected to the inner wall of the adjusting shaft.

[0015] Preferably, the elastic member is a return spring, and two ends of the return spring are respectively fixed to the connecting end and the clamping sleeve.

[0016] Preferably, a first arc-shaped chamfer is provided along the edge of a side where the clamping sleeve and the fixing sleeve are close to each other.

[0017] Preferably, it also includes a pair of limit members, the two limit members are detachably connected to the adjustment surface and a limit area opposite to the two side walls of the standard pad is formed between the two limit members, the limit area is opposite to the clamping area, and the highest position of the limit member is lower than the lowest contact surface of the standard pad and the contact shaft.

[0018] Preferably, a positioning portion is protruded from the bottom of the limiting member, a positioning groove opposite to the positioning portion is provided on the upper end of the adjusting surface, and a magnetic block that can be magnetically matched with the positioning portion is provided at the bottom of the positioning groove.

[0019] Preferably, the two limiting members are located away from one side of the rotation axis and symmetrically form a second arc chamfer on both sides of the opening of the limiting area.

[0020] The second technical solution of the utility model is as follows:

[0021] A standard pad applied to a sinusoidal magnetic table comprises a pad body, wherein the upper end surface of the pad body forms a plurality of continuously distributed and successively increasing sinusoidal contact surfaces, wherein when the pad body is placed on the upper end of a base of the sinusoidal magnetic table and the sinusoidal contact surfaces are kept in contact with a contact axis, the working surface on the top of the rotating table forms an inclination angle corresponding to the lifting height of the sinusoidal contact surfaces.

[0022] Preferably, the cushion block bodies are provided with at least three types, and each cushion block body is provided with five sinusoidal contact surfaces, and the sinusoidal contact surfaces on the cushion block bodies can lift the turntable at inclination angles of 1-5°, 6-10° and 11-15°.

[0023] The beneficial effects of the utility model are as follows:

[0024] The utility model transforms the contact shaft that contacts the standard pad into a clamping fixing structure that can elastically clamp the two sides of the standard pad, thereby enabling rapid positioning and clamping of the standard pad and the contact shaft, ensuring the stability and accuracy of the standard pad during the adjustment of the sinusoidal magnetic table, and effectively avoiding errors caused by pad displacement in traditional methods.

[0025] Specifically, the clamping area design of the contact shaft, combined with the function of elastic parts (such as return springs), can automatically adapt to and fit tightly to both sides of the standard pad. Even if it is subjected to external forces during processing, the pad can maintain a stable state, significantly improving processing accuracy and adjustment efficiency.

[0026] In addition, the coordination of the fixing sleeve, adjusting shaft, elastic part and clamping sleeve of the contact shaft in the utility model allows the user to quickly adjust the position of the clamping sleeve according to actual needs, leaving the clamping area to quickly adapt to and clamp different standard pads, greatly improving the convenience of using standard pads.

[0027] In particular, the introduction of the limiter and its cooperation with the positioning part and the magnetic block provide additional positioning support, ensuring the precise alignment of the standard pad during the processing process. At the same time, the magnetic matching design facilitates quick installation and disassembly, and the limiter can be removed when no adjustment is required to avoid affecting the normal contact between the contact shaft and the adjustment surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention.

[0029] in:

[0030] Figure 1 It is a schematic diagram of the overall structure of the first embodiment of the utility model;

[0031] Figure 2 It is a side view of the first embodiment of the utility model;

[0032] Figure 3 It is a front view of the first embodiment of the utility model;

[0033] Figure 4 It is a partial structural cross-sectional view of the first embodiment of the utility model;

[0034] Figure 5 It is a schematic cross-sectional structural diagram of the contact shaft in the first embodiment of the utility model;

[0035] Figure 6 yes Figure 4 A schematic diagram of the local enlarged structure of the middle A area;

[0036] Figure 7 It is a partial structural schematic diagram highlighting the limiter and the standard cushion block in the first embodiment of the utility model;

[0037] Figure 8 It is a schematic diagram of multiple groups of standard pads in the second embodiment of the utility model.

[0038] Description of labels:

[0039] 10. Base; 11. Adjustment surface; 12. Positioning groove; 13. Magnetic block; 20. Rotating table; 21. Working surface; 30. Rotating axis; 40. Angle fixing member; 41. Adjustment through groove; 42. First locking bolt; 43. Second locking bolt; 50. Contact axis; 51. Clamping area; 52. Fixing sleeve; 521. Sleeve body; 522. Cover; 523. Connecting end; 524. Snap-fit ​​hole; 525. Step portion; 526. Limiting edge; 527. Mounting groove; 528. Hook portion; 53. Adjustment axis; 54. Clamping sleeve; 55. Elastic member; 56. First arc chamfer; 60. Limiting member; 61. Positioning portion; 62. Second arc chamfer; 70. Standard pad; 71. Pad body; 72. Sine contact surface; 73. Angle mark. DETAILED DESCRIPTION

[0040] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0041] Embodiment 1

[0042] See also Figures 1 to 7 , is a fast adjustable sinusoidal magnetic table as the best embodiment of the utility model,

[0043] First, it includes a base 10, which is in a rectangular block shape as a whole, and a flat adjustment surface 11 is formed on its upper end, and the bottom can be placed flatly on a corresponding flat placement surface to serve as a stable foundation for the entire sine magnetic table;

[0044] The rotating platform 20 is also included, which is in a rectangular block shape similar to the base 10, with a flat working surface 21 formed on the top, and one side of the bottom is pivotally connected to the adjustment surface 11 through a rotating shaft 30. In this embodiment, the bottom of the rotating platform 20 also forms a flat surface, and the rotating shaft 30 is arranged between the rotating platform 20 and the base 10 as the rotation center of the rotating platform 20, so that the rotating platform 20 can form a rotation angle based on the base 10 around the rotating shaft 30;

[0045] A pair of angle fixing members 40 are in the form of long strips and are bent in an arc shape. They are symmetrically mounted on both sides of the rotating table 20 and the base 10, and are used to position the rotation angle of the rotating table 20 relative to the base 10. Specifically, in this embodiment, one end of the angle fixing member 40 forms a mounting hole (not shown in the figure), and the other end thereof penetrates through an adjustment slot 41 extending along its arc surface. The lower end of the angle fixing member 40 is locked and fixed to the side wall of the base 10 through the mounting hole and a first locking bolt 42 and is located below the rotating shaft 30. The other end of the angle fixing member 40 is locked and fixed to the side wall of the rotating table 20 through a second locking bolt 43 that passes through the adjustment slot 41. The second locking bolt 43 is located on the side wall of the rotating table 20. The connection point of the wall is fixed. When the first locking bolt 42 and the second locking bolt 43 are loosened, the angle fixing member 40 can rotate around the mounting hole, the rotating platform 20 can rotate around the rotating axis 30, and the position of the second locking bolt 43 in the adjusting slot 41 changes accordingly with the rotation of the rotating platform 20. If the angle of the rotating platform 20 needs to be fixed, it is only necessary to tighten the first locking bolt 42 and the second locking bolt 43 accordingly. At this time, the second locking bolt 43 presses and fixes the upper end of the angle fixing member 40 to the corresponding position of the rotating platform 20, and the first locking bolt 42 presses and fixes the lower end of the angle fixing member 40 to the base 10, so that the rotating platform 20 maintains the corresponding tilt angle, and the tilt angle of the rotating platform 20 is fixed.

[0046] It also includes a contact axis 50, which is disposed on a side of the bottom of the rotating platform 20 opposite to the rotating axis 30 and is distributed parallel to the rotating axis 30, and is used to overlap with the standard cushion block 70 to limit the rotating platform 20 to form a rotation angle corresponding to the sine value marked by the standard cushion block 70;

[0047] The contact shaft 50 includes a clamping area 51 that can elastically clamp both sides of the standard pad 70 .

[0048] In the utility model, the outermost diameter of the contact shaft 50 is the same as that of the rotating shaft 30, so that when the standard cushion block 70 is not placed, the contact shaft 50 is on the adjustment surface 11. At this time, the contact shaft 50 and the rotating shaft 30 jointly support the rotating table 20, and its upper end surface remains in the same horizontal state as the base 10. By adding the standard cushion block 70 between the lower end of the contact shaft 50 and the adjustment surface 11 and raising the lowest position of the contact shaft 50, the inclination angle of the rotating table 20 can be adjusted.

[0049] Specifically, Figure 3 , 4As shown in Figure 5, the contact shaft 50 includes a fixed sleeve 52 fixed to the bottom of the rotating table 20, an adjusting shaft 53 fixed to the inner side of the fixed sleeve 52 and protruding at one end, and a clamping sleeve 54 slidably sleeved on the other end of the adjusting shaft 53. In this embodiment, the fixed sleeve 52 and the clamping sleeve 54 are cylindrical sleeves, the adjusting shaft 53 is a hollow column, and an elastic member 55 for driving the clamping sleeve 54 to move toward the fixed sleeve 52 is provided in the adjusting shaft 53, and a clamping area 51 is formed between the clamping sleeve 54 and the fixed sleeve 52.

[0050] Furthermore, the fixing sleeve 52 includes an internally hollow sleeve body 521 and a cover 522 embedded in one end of the sleeve body 521. The inner side of the cover 522 is provided with a connecting end 523 extending along its axial direction. The connecting end 523 penetrates into the adjusting shaft 53 and is threadedly connected to the inner wall of the adjusting shaft 53. In this embodiment, the end of the fixing sleeve 52 forms a snap-fitting hole 524 corresponding to the inner wall of the adjusting shaft 53, the snap-fitting hole 524 forms an annular step portion 525, and the edge of the cover 522 forms a limiting edge 526 adapted to the step portion 525.

[0051] Furthermore, the elastic member 55 is a return spring, and the two ends of the return spring are respectively fixed to the connecting end 523 and the clamping sleeve 54. In this embodiment, a mounting groove 527 is formed inside the connecting end 523, and hook portions 528 are provided in the mounting groove 527 and at the inner bottom of the clamping sleeve 54 along the axial direction. The two ends of the return spring are respectively hooked and connected to the two hook portions 528. Therefore, under normal conditions, under the pull of the return spring, the clamping sleeve 54, which can slide along the adjusting shaft 53, is pulled toward the direction close to the fixed sleeve 52. When it is necessary to limit the position of the standard cushion block 70, it is only necessary to pull the clamping sleeve 54 in the reverse direction, and then release the clamping sleeve 54 after the standard cushion block 70 is placed in the clamping area 51 between the clamping sleeve 54 and the fixed sleeve 52, so that the clamping sleeve 54 and the fixed sleeve 52 can elastically clamp the standard cushion block 70. At this time, the actual contact surface of the standard cushion block 70 is the outer peripheral surface of the adjusting shaft 53. Therefore, when calculating the actual height of the standard cushion block 70, the outer diameter difference between the adjusting shaft 53 and the fixed sleeve 52 and the clamping sleeve 54 still needs to be calculated.

[0052] Preferably, Figure 4 , 5 As shown, a first arc chamfer 56 is provided along the edge of the clamping sleeve 54 and the fixing sleeve 52 on one side where the clamping sleeve 54 and the fixing sleeve 52 are close to each other. The first arc chamfer 56 provided on the edge of the clamping sleeve 54 and the fixing sleeve 52 can prevent the standard pad 70 from being damaged by sharp edges when it is placed in the clamping area 51, and can provide a certain guiding effect, so that the marked pad can be more conveniently inserted into the clamping area 51, thereby further enhancing the protection and guiding effect of the standard pad 70.

[0053] Preferably, Figure 1 , 4As shown in , 6 and 7, it also includes a pair of limit members 60, the two limit members 60 are detachably connected to the adjustment surface 11, and a limit area (marked in the figure) opposite to the two side walls of the standard cushion block 70 is formed between the two limit members 60, the limit area is opposite to the clamping area 51, and the highest position of the limit member 60 is lower than the lowest contact surface of the standard cushion block 70 and the contact shaft 50.

[0054] Preferably, a positioning portion 61 is protruded from the bottom of the limiting member 60, a positioning groove 12 opposite to the positioning portion 61 is provided at the upper end of the adjusting surface 11, and a magnetic block 13 that can magnetically cooperate with the positioning portion 61 is provided at the bottom of the positioning groove 12. In this embodiment, the positioning portion 61 and the limiting member 60 are an integrated structure as a whole, and are made of an alloy material that can be attracted by a magnet. The magnetic block 13 is a strong magnet, so that the limiting member 60 can be stably magnetically attracted to the positioning groove 12 during the installation process, so that a limiting area is stably formed between the two limiting members 60, which is convenient for the insertion and limiting of the standard pad 70.

[0055] Preferably, Figure 7 As shown, the two limiting members 60 are away from one side of the rotating shaft 30 and are symmetrically located on both sides of the opening of the limiting area to form a second arc chamfer 62. The second arc chamfer 62 can prevent the standard pad 70 from being damaged by sharp edges when placed in the limiting area, and can provide a certain guiding effect, so that the marked pad can be more conveniently inserted into the limiting area, thereby further enhancing the protection and guiding effect of the standard pad 70.

[0056] Embodiment 2:

[0057] A standard spacer 70 for a sine magnetic table, such as Figure 8 As shown, it includes a pad block body 71, and the upper end surface of the pad block body 71 forms a plurality of continuously distributed and successively increasing sinusoidal contact surfaces 72. The sinusoidal contact surfaces 72 enable the pad block body 71 to be placed on the upper end of the base 10 of the sinusoidal magnetic table and keep the sinusoidal contact surfaces 72 in contact with the contact shaft 50, so that the working surface 21 on the top of the rotating table 20 forms an inclination angle corresponding to the lifting height of the sinusoidal contact surfaces 72.

[0058] In order to achieve standard angle adjustment, the standard pad 70 is designed to a specific height. When the standard pad 70 is inserted, the ratio of the increased lifting height of the turntable 20 and the fixed distance between the contact axis 50 and the rotating axis 30 is the sine value sinα of its inclination angle α. The required design height of the standard pad 70 can be inferred through the sine value sinα corresponding to the standard angle, and the corresponding pad design heights of 1°, 2°, 3°, ..., N° (N is a positive integer) can be calculated. After the calculation is completed, angle marks 73 of corresponding angles are set on the side walls of the pad body 71 relative to the positions of the sinusoidal contact surfaces 72 of each different angle for the convenience of users.

[0059] Preferably, in this embodiment, the pad block main body 71 is designed into three types, and each type of pad block main body 71 is provided with five sinusoidal contact surfaces 72. The inclination angles of the turntable 20 that can be lifted by the sinusoidal contact surfaces 72 on the three groups of pad block main bodies 71 correspond to 1-5°, 6-10° and 11-15°, respectively, and the degrees are all positive integers.

[0060] In order to adapt to the lowest adjustment angle and the pad height H1 corresponding to 1°, the height of the limiter 60 on the adjustment surface 11 is designed to be 1 / 2H1 to avoid affecting the normal contact process between the contact shaft 50 and the sinusoidal contact surface 72 .

[0061] The beneficial effects of the utility model are as follows:

[0062] The utility model transforms the contact shaft 50 that contacts the standard pad 70 into a clamping fixing structure that can elastically clamp the two sides of the standard pad 70, thereby enabling rapid positioning and clamping of the standard pad 70 and the contact shaft 50, ensuring the stability and accuracy of the standard pad 70 during the adjustment of the sinusoidal magnetic table, and effectively avoiding the errors caused by the displacement of the pad in the traditional way.

[0063] Specifically, the design of the clamping area 51 of the contact shaft 50, combined with the function of the elastic member 55 (such as a return spring), can automatically adapt to and fit tightly to both sides of the standard pad 70. Even if it is subjected to external forces during the processing, the pad can maintain a stable state, thereby significantly improving the processing accuracy and adjustment efficiency.

[0064] In addition, the cooperation of the fixing sleeve 52, the adjusting shaft 53, the elastic member 55 and the clamping sleeve 54 of the contact shaft 50 in the utility model allows the user to quickly adjust the position of the clamping sleeve 54 according to actual needs, leaving the clamping area 51 free to quickly adapt to and clamp different standard pads 70, thereby greatly improving the convenience of using the standard pads 70.

[0065] In particular, the introduction of the limit member 60 and its cooperation with the positioning portion 61 and the magnetic block 13 provide additional positioning support, ensuring the precise alignment of the standard pad 70 during the processing process. At the same time, the magnetic matching design facilitates quick installation and disassembly. The limit member 60 can be removed when no adjustment is required to avoid affecting the normal contact between the contact shaft 50 and the adjustment surface 11.

[0066] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A rapidly adjustable sinusoidal magnetic table, characterized in that: include: A base (10) having an upper end formed with a flat adjustment surface (11); A rotating table (20), the top of which forms a working surface (21), and one side of the bottom of which is pivotally connected to the adjustment surface (11) via a rotating shaft (30); A pair of angle fixing members (40) are arranged on both sides of the rotating platform (20) and the base (10) and are used to locate the rotation angle of the rotating platform (20) relative to the base (10); A contact axis (50) is arranged on a side of the bottom of the rotating platform (20) opposite to the rotating axis (30) and is distributed parallel to the rotating axis (30) and is used to overlap with the standard pad (70) to limit the rotating platform (20) to form a rotation angle corresponding to the sine value marked by the standard pad (70); Wherein, the contact shaft (50) comprises a clamping area (51) capable of elastically clamping two sides of a standard cushion block (70).

2. A rapidly adjustable sinusoidal magnetic table according to claim 1, characterized in that: The contact shaft (50) comprises a fixed sleeve (52) fixed to the bottom of the rotating table (20), an adjusting shaft (53) fixed to the inner side of the fixing sleeve (52) and having one end protruding therefrom, and a clamping sleeve (54) slidably sleeved on the other end of the adjusting shaft (53); the adjusting shaft (53) is hollow inside and is provided with an elastic member (55) for driving the clamping sleeve (54) to move toward the fixing sleeve (52); the clamping area (51) is formed between the clamping sleeve (54) and the fixing sleeve (52).

3. The rapidly adjustable sinusoidal magnetic table according to claim 2, characterized in that: The fixing sleeve (52) comprises a sleeve body (521) with a hollow interior and a cover (522) embedded in one end of the sleeve body (521); a connecting end (523) protruding and extending along its axial direction is provided on the inner side of the cover (522); the connecting end (523) penetrates into the adjusting shaft (53) and is threadedly connected to the inner wall of the adjusting shaft (53).

4. The rapidly adjustable sinusoidal magnetic table according to claim 3, characterized in that: The elastic member (55) is a return spring, and two ends of the return spring are respectively fixed to the connecting end (523) and the clamping sleeve (54).

5. The rapidly adjustable sinusoidal magnetic table according to claim 2, characterized in that: A first arc-shaped chamfer (56) is provided along the edge of the side where the clamping sleeve (54) and the fixing sleeve (52) are close to each other.

6. The rapidly adjustable sinusoidal magnetic table according to claim 1, characterized in that: It also includes a pair of limiting members (60), the two limiting members (60) are detachably connected to the adjustment surface (11), and a limiting area opposite to the two side walls of the standard cushion block (70) is formed between the two limiting members (60), the limiting area is opposite to the clamping area (51), and the highest position of the limiting member (60) is lower than the lowest contact surface of the standard cushion block (70) and the contact shaft (50).

7. The rapidly adjustable sinusoidal magnetic table according to claim 6, characterized in that: A positioning portion (61) is protruding from the bottom of the limiting member (60), a positioning groove (12) opposite to the positioning portion (61) is provided at the upper end of the adjusting surface (11), and a magnetic block (13) that can be magnetically matched with the positioning portion (61) is provided at the bottom of the positioning groove (12).

8. The rapidly adjustable sinusoidal magnetic table according to claim 6, characterized in that: The two limiting members (60) are located on one side away from the rotating shaft (30) and are symmetrically located on both sides of the opening of the limiting area to form a second arc-shaped chamfer (62).

9. A standard spacer (70) used for the sinusoidal magnetic table according to claim 1, characterized in that: The invention comprises a pad block body (71), wherein the upper end surface of the pad block body (71) forms a plurality of sinusoidal contact surfaces (72) which are continuously distributed and increase in height in sequence, and wherein the sinusoidal contact surfaces (72) enable the working surface (21) on the top of the rotating table (20) to form an inclination angle corresponding to the height of the sinusoidal contact surfaces (72) when the pad block body (71) is placed on the upper end of the base (10) of the sinusoidal magnetic table and the sinusoidal contact surfaces (72) are kept in contact with the contact shaft (50).

10. The standard spacer (70) according to claim 9, characterized in that: The cushion block body (71) is provided with at least three types, and each cushion block body (71) is provided with five sinusoidal contact surfaces (72). The sinusoidal contact surfaces (72) on the cushion block body (71) can lift the rotating platform (20) at an inclination angle of 1-5°, 6-10° and 11-15°.

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