Upper grinding device for double-sided grinding machine

Abstract

The utility model provides an upper grinding device for a double-sided grinding machine, and relates to the technical field of grinding devices. The embodiment of the utility model provides an upper grinding device for a double-sided grinding machine. The upper grinding device comprises an upper grinding disc; the mounting disc is arranged above the upper grinding disc and is connected with the upper grinding disc; the first telescopic cylinder is arranged above the mounting disc, and a telescopic shaft of the first telescopic cylinder is provided with a pressure sensor; wherein the pressure sensor is connected with the mounting disc through a mounting rod, the pressure sensor is used for acquiring extrusion force data information of the mounting rod, a rotatable deep groove ball bearing is arranged on the mounting disc, one end of the mounting rod is connected with the pressure sensor, and the other end of the mounting rod is connected with the deep groove ball bearing, so that the mounting disc and the mounting rod can rotate relatively.

Description

Technical Field

[0001] The utility model relates to the technical field of grinding devices, in particular to an upper grinding device for a double-sided grinding machine. Background Art

[0002] Double-sided grinding machines are mainly used for double-sided grinding of crystals or other parts with two parallel sides, especially for the processing of thin and brittle materials. They are suitable for the surface grinding and polishing of various materials of mechanical seal rings, ceramic sheets, cylinder piston rings, oil pump blade bearing end faces, and metal materials such as silicon, germanium, quartz crystals, graphite, sapphire, optical crystals, glass, hard alloys, stainless steel, and powder metallurgy.

[0003] For double-sided grinding machines, prior art such as Chinese patent application with application number CN202321645107.2 discloses a double-sided grinding device for abrasive grinding, comprising a base, a bracket fixed on the base, a hydraulic cylinder with an output shaft vertically downward fixed on the bracket, a grinding device arranged on the base, the grinding device comprising an upper grinding disc assembly and a lower grinding disc assembly, the upper grinding disc assembly comprising an upper disc and an upper grinding disc, the upper grinding disc is embedded in the lower surface of the upper disc through a first clamping block and a slot structure, the upper surface of the upper disc is fixedly connected to the output shaft of the hydraulic cylinder, the lower grinding disc assembly comprises a lower disc and a lower grinding disc, the lower grinding disc is embedded in the upper surface of the lower disc through a second clamping block and a slot structure, the lower disc is fixed on the base, a circular rack is fixed at the edge of the lower disc, a first gear is rotatably installed at the center of the lower disc, a plurality of second gears are placed on the lower disc and between the circular rack and the first gear, the second gear is meshed with the circular rack and the first gear, and a plurality of notches for placing workpieces are provided on the second gear.

[0004] However, there is no controllable pressure measuring mechanism on the grinder when processing the product, so the workpiece may have the following defects: the pressure of the upper grinding disc is the weight of the upper grinding disc plus the pressure of the cylinder. The pressure adjustment of the upper grinding disc requires shutting down the machine first. As the upper grinding disc is used for a longer time, its own weight will decrease, causing the grinding speed to drop and the efficiency to decrease, which will cause the product workpiece to be broken and have a high defect rate. Utility Model Content

[0005] A technical problem to be solved by the utility model is that the pressure adjustment of the grinding device on the existing grinding machine is inconvenient, and the pressure size data of the grinding device cannot be obtained in time, so that it cannot be adjusted in time.

[0006] In order to solve the above technical problems, an embodiment of the utility model provides an upper grinding device for a double-sided grinder, comprising: an upper grinding disc; a mounting disc, arranged above the upper grinding disc and connected to the upper grinding disc; and a first telescopic cylinder, arranged above the mounting disc, a pressure sensor being arranged on the telescopic shaft of the first telescopic cylinder; wherein the pressure sensor and the mounting disc are connected to each other via a mounting rod, the pressure sensor being used to obtain extrusion pressure data information of the mounting rod, a rotatable deep groove ball bearing being arranged on the mounting disc, one end of the mounting rod being connected to the pressure sensor, and the other end being connected to the deep groove ball bearing, so that the mounting disc and the mounting rod can rotate relative to each other.

[0007] In some embodiments, a sensor mounting seat is provided on the telescopic shaft of the first telescopic cylinder, the sensor mounting seat has a mounting cavity, and the pressure sensor is detachably arranged in the mounting cavity. By providing the mounting seat, it is convenient to fix the pressure sensor so that the extrusion force of the mounting rod can be obtained more stably.

[0008] In some embodiments, a positioning seat is provided on the outer wall of the sensor mounting seat, a cover plate is provided on the outer wall of the telescopic shaft of the first telescopic cylinder, and the cover plate and the positioning seat are connected to each other by screws. By adding the positioning seat and the cover plate, the stability of the pressure sensor installed on the first telescopic cylinder is improved.

[0009] In some embodiments, the pressure sensor is threadedly connected to the mounting rod, so as to facilitate quick installation and removal of the mounting rod.

[0010] In some embodiments, the mounting plate is provided with a through hole, the deep groove ball bearing is provided in the through hole, the upper and lower ends of the through hole are provided with a pressure plate and a flange seat respectively, the lower end of the mounting rod passes through the pressure plate and cooperates with the deep groove ball bearing, and the flange seat and the mounting plate are connected to each other by bolts. By providing the pressure plate and the flange seat, the deep groove ball axis can be easily installed and fixed.

[0011] In some embodiments, a joint bearing is further arranged in the deep groove ball bearing, and the lower end of the mounting rod is connected to the joint bearing. By arranging the joint bearing, a larger load can be borne, thereby improving the structural safety of the upper grinding device.

[0012] In some embodiments, a bearing plate is further provided at the upper end of the upper grinding disc, the upper grinding disc is detachably connected to the bearing plate, the bearing plate is threadedly connected to the mounting plate via a suspension rod, and the outer diameter of the bearing plate is smaller than the outer diameter of the upper grinding disc. By providing the bearing plate, the upper grinding disc is arranged on the bearing plate, which facilitates the replacement of upper grinding discs of different models.

[0013] In some embodiments, the carrier plate and the upper grinding plate have coaxial through-holes, and the carrier plate is provided with a rotating clutch located outside the through-hole, and the rotating clutch has a plurality of grooves distributed in an annular shape. By providing the rotating clutch, it is convenient to install the upper grinding plate on the lower grinding plate, so that the upper grinding plate and the lower grinding plate rotate as a whole following the lower grinding plate, so as to grind the upper and lower surfaces of the component to be ground.

[0014] In some embodiments, a second telescopic cylinder is further included, the telescopic shaft of the second telescopic cylinder is connected to the first telescopic cylinder, and the second telescopic cylinder is used to connect to the gantry to provide suspension support for the upper grinding disc. By setting two telescopic cylinders, the second telescopic cylinder is used for large-amplitude movement, and the first telescopic cylinder is used for small-amplitude movement, so that the lifting and lowering movement of the upper grinding disc is more stable, reducing the risk of fragmentation.

[0015] In some embodiments, the first telescopic cylinder and the second telescopic cylinder are one of an oil cylinder and a pneumatic cylinder.

[0016] Through the above technical solution, the utility model provides a double-sided grinding machine with a grinding device, which has at least the following beneficial effects:

[0017] By arranging a pressure sensor on the first telescopic cylinder, the pressure sensor is connected to the upper grinding disc through a mounting rod, and the pressure of the upper grinding disc during the grinding process can be obtained through the pressure sensor, and then the pressure of the upper grinding disc relative to the component to be ground can be adjusted in real time by lifting and lowering the first telescopic cylinder, that is, the first telescopic cylinder and the pressure sensor are used to maintain the pressure of the upper grinding disc, thereby avoiding large pressure fluctuations on the upper grinding disc and unstable grinding force, thereby improving the grinding effect of the upper grinding disc; the mounting rod is connected to the mounting disc through a deep groove ball bearing, that is, the pressure sensor will not rotate with the upper grinding disc when it rotates for grinding, and the mounting rod can be lifted and lowered under any working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the upper grinding device disclosed in the embodiment of the utility model;

[0020] Figure 2 yes Figure 1 Schematic diagram of the main structure;

[0021] Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of;

[0022] Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at the middle mounting plate.

[0023] Description of reference numerals:

[0024] 10. First telescopic cylinder; 11. Second telescopic cylinder; 20. Upper grinding disc; 21. Carrying disc; 30. Mounting disc; 31. Suspension rod; 40. Positioning seat; 41. Cover plate; 50. Pressure sensor; 51. Sensor mounting seat; 60. Mounting rod; 70. Deep groove ball bearing; 71. Spherical plain bearing; 72. Flange seat; 73. Pressure plate; 80. Rotating clutch.

[0025] 10-first telescopic cylinder, 11-second telescopic cylinder, 20-upper grinding disc, 21-carrying disc, 30-mounting disc, 31-suspender rod, 40-positioning seat, 41-cover plate, 50-pressure sensor, 51-sensor mounting seat, 60-mounting rod, 70-deep groove ball bearing, 71-spherical bearing, 72-flange seat, 73-pressure plate, 80-rotating clutch DETAILED DESCRIPTION

[0026] The following is a further detailed description of the implementation of the utility model in conjunction with the accompanying drawings and examples. The detailed description of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the utility model, but cannot be used to limit the scope of the utility model. The utility model can be implemented in many different forms, not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0027] The utility model provides these embodiments to make the utility model thorough and complete, and to fully express the scope of the utility model to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​described in these embodiments should be interpreted as merely exemplary, rather than as limiting.

[0028] It should be noted that, in the description of the present invention, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0029] In addition, the words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0030] It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0031] All terms used in the present invention have the same meanings as those understood by ordinary technicians in the field to which the present invention belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined herein.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0033] Figure 1 It is a three-dimensional structural schematic diagram of the upper grinding device disclosed in the embodiment of the utility model; Figure 2 yes Figure 1 Schematic diagram of the main structure; Figure 3 yes Figure 2 A schematic diagram of the cross-sectional structure of; Figure 4 yes Figure 3 Schematic diagram of the enlarged structure at the middle mounting plate.

[0034] The embodiment of the utility model provides an upper grinding device for a double-sided grinder, comprising an upper grinding disc 20, a mounting disc 30 and a first telescopic cylinder 10. The mounting disc 30 is arranged above the upper grinding disc 20 and connected to the upper grinding disc 20. The first telescopic cylinder 10 is arranged above the mounting disc 30, and a pressure sensor 50 is arranged on the telescopic shaft of the first telescopic cylinder 10; wherein the pressure sensor 50 and the mounting disc 30 are connected to each other through a mounting rod 60, and the pressure sensor 50 is used to obtain the extrusion pressure data information of the mounting rod 60, and a rotatable deep groove ball bearing 70 is arranged on the mounting disc 30, and one end of the mounting rod 60 is connected to the pressure sensor 50, and the other end is connected to the deep groove ball bearing 70, so that the mounting disc 30 and the mounting rod 60 can rotate relative to each other.

[0035] By arranging a pressure sensor 50 on the first telescopic cylinder 10, the pressure sensor 50 is connected to the upper grinding disc 20 via the mounting rod 60, and the pressure of the upper grinding disc 20 during the grinding process can be obtained through the pressure sensor 50, and then the pressure of the upper grinding disc 20 relative to the component to be ground can be adjusted in real time by lifting and lowering the first telescopic cylinder, that is, the first telescopic cylinder 10 and the pressure sensor 50 are used to maintain the pressure of the upper grinding disc 20, thereby avoiding large pressure fluctuations of the upper grinding disc 20 and unstable grinding force, thereby improving the grinding effect of the upper grinding disc 20; the mounting rod 60 is connected to the mounting plate 30 via a deep groove ball bearing 70, that is, when the upper grinding disc 20 rotates for grinding, the pressure sensor 50 will not rotate with it, and the mounting rod 60 can be lifted and lowered under any working conditions.

[0036] Specifically, during the use of the upper grinding device applied for, the upper grinding disc 20 will be used in conjunction with the lower grinding disc (not shown in the figure), and the lower grinding disc is provided with a power structure for driving the lower grinding disc to rotate, and the middle upper end of the lower grinding disc is provided with a connecting structure for connecting the upper grinding disc 20, and the outer wall of the connecting structure is provided with a plurality of protrusions distributed in an annular shape, and the connecting structure is connected to the rotating clutch 80 of the upper grinding disc 20, and the groove of the rotating clutch 80 extends in the vertical direction, and the groove cooperates with the protrusion, so that the upper grinding disc 20 and the lower grinding disc can rotate synchronously, so as to grind the component to be ground located between the upper grinding disc 20 and the lower grinding disc, and the component to be ground is fixed by other clamping structures. The first telescopic cylinder 10 can be connected to the gantry (not shown in the figure), and plays a role of suspension support for the upper grinding disc 20, and the gantry is located above the lower grinding disc, and the gantry can also be other structures such as beams. The pressure sensor 50 can be an MPX5700 series piezoresistive transducer. Deep groove ball bearing 70 is a bearing with deep grooves. The ball rolls in the grooves to achieve relative movement between the inner and outer rings. This bearing is particularly suitable for high speed or even extremely high speed operation. Deep groove ball bearing 70 mainly bears radial loads, but when the radial clearance of the bearing increases, it also has a certain ability to bear radial and axial combined loads.

[0037] In some embodiments, a sensor mounting seat 51 is provided on the telescopic shaft of the first telescopic cylinder 10. The sensor mounting seat 51 has a mounting cavity, and the pressure sensor 50 is detachably disposed in the mounting cavity. By providing the mounting seat, it is convenient to fix the pressure sensor 50 so that the squeezing force of the mounting rod 60 can be obtained more stably.

[0038] Specifically, the pressure sensor 50 may be threadedly connected to the sensor mounting seat 51 .

[0039] In some embodiments, a positioning seat 40 is provided on the outer wall of the sensor mounting seat 51, and a cover plate 41 is provided on the outer wall of the telescopic shaft of the first telescopic cylinder 10, and the cover plate 41 and the positioning seat 40 are connected to each other by screws. By adding the positioning seat 40 and the cover plate 41, the stability of the pressure sensor 50 installed on the first telescopic cylinder 10 is improved.

[0040] Specifically, the sensor mounting seat 51 is directly connected to the first telescopic cylinder 10 on the one hand, and can also be indirectly connected to the telescopic shaft of the first telescopic cylinder 10 through the positioning seat 40 and the cover plate 41 on the other hand, so as to further improve the structural stability of the sensor mounting seat 51.

[0041] In some embodiments, the pressure sensor 50 is threadedly connected to the mounting rod 60, so that the mounting rod 60 can be installed and removed quickly and easily.

[0042] Specifically, one end of the mounting rod 60 is connected to the mounting plate 30, and the other end is connected to the pressure sensor 50. The mounting plate 30 is connected to the upper grinding plate 20, that is, the mounting plate 30 and the upper grinding plate 20 are as a whole, and their pressure is transmitted to the pressure sensor 50 through the mounting rod 60. The grinding pressure of the upper grinding plate 20 can be obtained through the pressure sensor 50.

[0043] In some embodiments, the mounting plate 30 is provided with a through hole, the deep groove ball bearing 70 is provided in the through hole, the upper and lower ends of the through hole are provided with a pressing plate 73 and a flange seat 72 respectively, the lower end of the mounting rod 60 passes through the pressing plate 73 and then cooperates with the deep groove ball bearing 70, and the flange seat 72 and the mounting plate 30 are connected to each other by bolts. By providing the pressing plate 73 and the flange seat 72, it is convenient to install and fix the deep groove ball axis.

[0044] Specifically, the pressure plate 73 and the flange seat 72 are used to install the deep groove ball bearing 70 .

[0045] In some embodiments, a joint bearing 71 is further provided in the deep groove ball bearing 70, and the lower end of the mounting rod 60 is connected to the joint bearing 71. By providing the joint bearing 71, a larger load can be supported, thereby improving the structural safety of the upper grinding device.

[0046] Specifically, the spherical bearing 71 is a sliding bearing of a special structure, which is mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface, and can withstand a large load. The structure of the spherical bearing 71 is simpler than that of the rolling bearing. Its sliding contact surface is an inner spherical surface and an outer spherical surface, and it can rotate and swing at any angle during movement. The spherical sliding contact area of ​​the spherical bearing 71 is large, and the inclination angle is large, so it has a large load capacity and impact resistance.

[0047] In some embodiments, a bearing plate 21 is further provided at the upper end of the upper grinding disc 20, the upper grinding disc 20 is detachably connected to the bearing plate 21, the bearing plate 21 is threadedly connected to the mounting plate 30 via a suspension rod 31, and the outer diameter of the bearing plate 21 is smaller than the outer diameter of the upper grinding disc 20. By providing the bearing plate 21, the upper grinding disc 20 is arranged on the bearing plate 21, so that different types of upper grinding discs 20 can be easily replaced.

[0048] Specifically, the supporting plate 21 and the upper grinding plate 20 may be connected by 16 bolts.

[0049] In some embodiments, the carrier plate 21 and the upper grinding plate 20 have coaxial through holes, and the carrier plate 21 is provided with a rotating clutch 80 located outside the through hole, and the rotating clutch 80 has a plurality of grooves distributed in an annular shape. By providing the rotating clutch 80, it is convenient to install the upper grinding plate 20 on the lower grinding plate, so that the upper grinding plate 20 and the lower grinding plate rotate as a whole following the lower grinding plate, so as to grind the upper and lower surfaces of the component to be ground.

[0050] Specifically, all the grooves are evenly spaced on the peripheral wall of the rotating clutch 80, and the extending direction of the grooves is the vertical direction, so that the rotating clutch 80 can be connected and separated with the connecting structure of the lower grinding disc by the lifting and lowering movement of the first telescopic cylinder 10.

[0051] In some embodiments, a second telescopic cylinder 11 is further included, the telescopic shaft of the second telescopic cylinder 11 is connected to the first telescopic cylinder 10, and the second telescopic cylinder 11 is used to connect to the gantry to provide a suspension support force for the upper grinding disc 20. By setting two telescopic cylinders, the second telescopic cylinder 11 is used for large-amplitude movement, and the first telescopic cylinder 10 is used for small-amplitude movement, so that the lifting and lowering movement of the upper grinding disc 20 is more stable, reducing the risk of fragmentation.

[0052] Specifically, by arranging two telescopic cylinders, the purpose of fast rising and falling transmission is achieved, and the transmission is accurate and stable.

[0053] In some embodiments, the first telescopic cylinder 10 and the second telescopic cylinder 11 are oil cylinders or air cylinders.

[0054] So far, various embodiments of the present invention have been described in detail. In order to avoid obscuring the concept of the present invention, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0055] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present invention. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A grinding device for a double-sided grinding machine, characterized in that: include: Upper grinding disc (20); A mounting plate (30) is disposed above the upper grinding plate (20) and connected to the upper grinding plate (20); and A first telescopic cylinder (10) is arranged above the mounting plate (30), and a pressure sensor (50) is arranged on the telescopic shaft of the first telescopic cylinder (10); The pressure sensor (50) and the mounting plate (30) are connected to each other via a mounting rod (60); the pressure sensor (50) is used to obtain extrusion pressure data information of the mounting rod (60); a rotatable deep groove ball bearing (70) is provided on the mounting plate (30); one end of the mounting rod (60) is connected to the pressure sensor (50) and the other end is connected to the deep groove ball bearing (70), so that the mounting plate (30) and the mounting rod (60) can rotate relative to each other.

2. The upper grinding device for a double-sided grinding machine according to claim 1, characterized in that: A sensor mounting seat (51) is arranged on the telescopic shaft of the first telescopic cylinder (10), the sensor mounting seat (51) having a mounting cavity, and the pressure sensor (50) is detachably arranged in the mounting cavity.

3. The upper grinding device for a double-sided grinding machine according to claim 2, characterized in that: The outer wall of the sensor mounting seat (51) is provided with a positioning seat (40), the outer wall of the telescopic shaft of the first telescopic cylinder (10) is sleeved with a cover plate (41), and the cover plate (41) and the positioning seat (40) are connected to each other by screws.

4. The upper grinding device for a double-sided grinding machine according to claim 2, characterized in that: The pressure sensor (50) is threadedly connected to the mounting rod (60).

5. The upper grinding device for a double-sided grinding machine according to claim 1, characterized in that: The mounting plate (30) is provided with a through hole, the deep groove ball bearing (70) is arranged in the through hole, and the upper and lower ends of the through hole are respectively provided with a pressure plate (73) and a flange seat (72), the lower end of the mounting rod (60) passes through the pressure plate (73) and cooperates with the deep groove ball bearing (70), and the flange seat (72) and the mounting plate (30) are connected to each other by bolts.

6. The upper grinding device for a double-sided grinding machine according to claim 1, characterized in that: A joint bearing (71) is also arranged inside the deep groove ball bearing (70), and the lower end of the mounting rod (60) is connected to the joint bearing (71).

7. The upper grinding device for a double-sided grinding machine according to claim 1, characterized in that: A bearing plate (21) is also provided at the upper end of the upper grinding disc (20), the upper grinding disc (20) and the bearing plate (21) are detachably connected, the bearing plate (21) and the mounting plate (30) are threadedly connected via a suspension rod (31), and the outer diameter of the bearing plate (21) is smaller than the outer diameter of the upper grinding disc (20).

8. The upper grinding device for a double-sided grinding machine according to claim 7, characterized in that: The carrier plate (21) and the upper grinding plate (20) have coaxial through holes, and the carrier plate (21) is provided with a rotating clutch (80) located outside the through hole, and the rotating clutch (80) has a plurality of grooves distributed in an annular shape.

9. The upper grinding device for a double-sided grinding machine according to claim 1, characterized in that: It also comprises a second telescopic cylinder (11), the telescopic shaft of the second telescopic cylinder (11) is connected to the first telescopic cylinder (10), and the second telescopic cylinder (11) is used to be connected to the gantry to provide a suspension support force for the upper grinding disc (20).

10. The upper grinding device for a double-sided grinding machine according to claim 9, characterized in that: The first telescopic cylinder (10) and the second telescopic cylinder (11) are either oil cylinders or air cylinders.

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