A high-efficiency flat grinding machine and flat grinding method

Abstract

In the technical field of polishing equipment of the present application, an efficient flat grinder and a flat grinding method are provided, including: a machine table, on which a polishing disc is provided, the rotating axis of the polishing disc extends in a vertical direction, and the upper surface of the polishing disc is a polishing surface for polishing; at least one workpiece fixing assembly, which includes at least one workpiece fixture, the workpiece fixture is a rotatable fixture, and the workpiece fixing assembly is used to adjust the relative position and angle between the workpiece to be polished and the polishing disc, so that the polishing surface fits with the polished surface of the workpiece; the workpiece fixture has a polishing state in which the polishing surface fits with the polished surface of the workpiece, and an exit state in which the polishing surface is separated from the polished surface of the workpiece. The rotating axis angle of the workpiece fixture is adjusted by the workpiece fixing assembly, so that the workpiece to be polished can be passively rotated under the rotation of the polishing disc, and the workpiece is eccentrically polished by the polishing surface of the polishing disc. The circular annular and elliptical annular outer surfaces of the workpiece can obtain a uniform polishing effect.

Description

Technical Field

[0001] The present application relates to the technical field of polishing equipment, and in particular to a high-efficiency flat grinding machine and a flat grinding method. Background Art

[0002] Workpiece polishing is a surface treatment process that aims to improve the surface quality and appearance of the workpiece. It removes scratches, oxide layers, rust and other defects on the surface of the workpiece to make the surface smoother and flatter, achieving a mirror effect. It enhances the beauty of the workpiece and gives it a better visual effect.

[0003] Nowadays, the polishing brush device used for polishing usually uses tools such as polishing wheels and sandpaper, and cooperates with polishing liquid to repeatedly rub against the surface of the workpiece under a certain pressure to remove the microscopic unevenness of the surface. The polishing of the circular and elliptical outer surfaces of some workpieces is a common polishing requirement in this field. Traditional polishing equipment is usually inefficient in processing such circular and elliptical outer surfaces, and it will lead to poor polishing effects, causing irregular defects such as grooves on the circular and elliptical surfaces of the workpiece. The use of machine tools to polish the circular and elliptical outer surfaces of workpieces will greatly increase costs.

[0004] Therefore, the above-mentioned technical defects need to be changed urgently. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide an efficient flat grinding machine and a flat grinding method, aiming to improve the polishing efficiency and yield rate of the annular outer surface of the workpiece and reduce the polishing cost of the annular outer surface of the workpiece.

[0006] A technical solution adopted by the present application to solve the technical problem is as follows: In the first aspect, a highly efficient flat grinder comprises:

[0007] A machine platform, on which a polishing disc is arranged, the rotating axis of the polishing disc extends in a vertical direction, and the upper surface of the polishing disc is a polishing surface for polishing;

[0008] and at least one workpiece fixing assembly, the workpiece fixing assembly comprising at least one workpiece clamp, the workpiece clamp is used to clamp the workpiece to be polished, the workpiece clamp is a rotatable clamp, and the workpiece fixing assembly is used to adjust the relative position and angle between the workpiece to be polished and the polishing disc so that the polishing surface fits the polished surface of the workpiece;

[0009] The workpiece clamp has a polishing state in which the polishing surface is in contact with the polished surface of the workpiece, and a withdrawal state in which the polishing surface is separated from the polished surface of the workpiece.

[0010] This embodiment is further configured such that a plurality of workpiece fixing assemblies are arranged on the machine platform, the plurality of workpiece fixing assemblies are evenly arranged around the outer circumference of the polishing disc, and the workpiece fixing assemblies include a plurality of workpiece clamps.

[0011] This embodiment is further configured that the workpiece fixing assembly includes:

[0012] A first fixed base, the first fixed base is arranged on the machine platform;

[0013] An extension rod, which is arranged on the first fixed base and extends toward the polishing disc;

[0014] and at least one second fixed base, the second fixed base being movably connected to the extension rod, and the workpiece fixture being fixed to the second fixed base;

[0015] The second fixed base is used to switch the workpiece fixture to a polishing state or an exit state.

[0016] This embodiment is further configured such that the extension rod extends in a horizontal direction.

[0017] This embodiment is further configured such that a plurality of second fixed bases are movably connected to the extension rod, the plurality of second fixed bases are arranged on the extension rod, and the second fixed bases are movably connected to the extension rod with the extension rod as a rotation axis.

[0018] This embodiment is further configured such that the installation angle of the first fixed base is adjustable, and the rotation axis of the first fixed base extends in the vertical direction; the first fixed base can also be used to adjust the horizontal height of the extension rod.

[0019] This embodiment is further configured that the workpiece fixture includes:

[0020] A sleeve, which is arranged on a second fixed base;

[0021] A rotating central axis, which is movably connected in the sleeve;

[0022] and an expansion chuck, which is movably connected to one end of the rotating central shaft and is used to fix the workpiece to be polished;

[0023] Among them, an adjusting rod is passed through the rotating central axis, one end of which is connected to the expansion chuck. The adjusting rod is used to adjust the expansion or contraction of the expansion chuck. The other end of the adjusting rod is provided with a knob, which is used to rotate the adjusting rod.

[0024] This embodiment is further configured such that the weight of the expansion chuck is greater than the weight of the knob, and one end of the expansion chuck hangs downward in a natural state.

[0025] The present embodiment is further configured such that a polishing liquid delivery component is also provided on the machine platform, the polishing liquid delivery component is used to deliver polishing liquid to the polishing disc, and the polishing liquid delivery component includes a filtering device, and the filtering device is used to filter impurities in the polishing liquid.

[0026] The second aspect of the present application provides a flat grinding method of a high-efficiency flat grinding machine based on any one of the first aspects, and the flat grinding method comprises the following steps:

[0027] Fix the workpiece to be polished on the workpiece fixture, and let the expansion chuck sag under its own weight so that the polishing surface of the polishing disc fits with the polished surface of the workpiece;

[0028] The workpiece fixture is used to adjust the rotation axis angle of the workpiece fixture through the workpiece fixing assembly, so that the workpiece to be polished can be passively rotated under the rotation of the polishing disc, and the circular and elliptical ring-shaped outer surfaces of the workpiece are eccentrically polished through the polishing surface;

[0029] Make sure that the circular and elliptical outer surfaces of the workpiece are polished, swing the sleeve through the second fixed base to move the polished workpiece away from the polishing disk, remove the workpiece on the workpiece fixture by rotating the knob, and replace it with a new workpiece to be polished.

[0030] Compared with the prior art, the present application provides an efficient flat grinder. The present invention can adjust the rotation axis angle of the workpiece fixture through the workpiece fixing assembly, so that the workpiece to be polished can realize passive rotation under the rotation of the polishing disc, and the circular annular and elliptical annular outer surfaces of the workpiece are eccentrically polished by the polishing surface of the polishing disc. The circular annular and elliptical annular outer surfaces of the workpiece can obtain a uniform polishing effect. The polishing efficiency and yield rate of the circular annular outer surface of the workpiece are effectively improved, and the polishing cost of the circular annular outer surface of the workpiece is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in 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 creative work.

[0032] Figure 1 Schematic diagram of the overall structure of an efficient flat grinder provided in this embodiment;

[0033] Figure 2 is another overall structural schematic diagram of an efficient flat grinder provided in this embodiment;

[0034] Figure 3 is a top view of an efficient flat grinder provided in this embodiment;

[0035] Figure 4 is a schematic structural diagram of a workpiece fixing assembly of an efficient flat grinder provided in this embodiment;

[0036] Figure 5 is another structural schematic diagram of a workpiece fixing assembly of an efficient flat grinder provided in this embodiment;

[0037] Figure 6 is an exploded schematic diagram of a workpiece chuck of an efficient flat grinder provided in this embodiment;

[0038] Figure 7 It is a cross-sectional view of a workpiece chuck of an efficient flat grinder provided in this embodiment.

[0039] In the figure: 1. machine table; 11. polishing disc; 111. polishing surface; 2. workpiece fixing assembly; 21. first fixed base; 22. extension rod; 23. second fixed base; 24. workpiece clamp; 241. sleeve; 242. rotating center axis; 2421. adjusting rotary rod; 2422. knob; 243. expansion chuck; 3. polishing liquid delivery assembly; 31. filtering device; 4. workpiece. DETAILED DESCRIPTION

[0040] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0041] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, "multiple" means two or more.

[0042] In the description of this application, it should be noted that, 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In addition, the technical features involved in the different embodiments of the present invention described above can be combined with each other as long as they do not conflict with each other.

[0044] The present invention provides Figure 1 , Figure 2 , Figure 3 As shown, an efficient flat grinder is used for grinding and polishing the surface of a workpiece 4, especially for grinding and polishing the annular and elliptical outer surfaces of the workpiece 4, removing scratches, oxide layers, rust and other defects on the surface of the workpiece 4, making the surface smoother and flatter, and achieving a mirror effect. Enhance the aesthetics of the workpiece 4 and give it a better visual effect. Its main structure includes: a machine table 1 and at least one workpiece fixing assembly 2, the machine table 1 is provided with a polishing disc 11, the rotating axis of the polishing disc 11 extends in the vertical direction, and the upper surface of the polishing disc 11 is a polishing surface 111 for polishing the workpiece 4; the workpiece fixing assembly 2 includes at least one workpiece fixture 24, the workpiece fixture 24 is used to clamp the workpiece 4 to be polished, and the workpiece fixture 24 is a rotatable fixture, that is, the workpiece fixture 24 can rotate under the action of an external force, thereby driving the workpiece 4 to rotate. During the rotation of the workpiece 4, the annular and elliptical outer surfaces of the workpiece 4 are ground and polished. The annular and elliptical outer surfaces of the workpiece 4 can be evenly polished. The workpiece fixing assembly 2 is used to adjust the relative position and angle between the workpiece 4 to be polished and the polishing disc 11, so that the polishing surface 111 fits with the polished surface 111 of the workpiece 4. The workpiece fixture 24 has a polishing state in which the polishing surface 111 fits with the polished surface 111 of the workpiece 4, and an exit state in which the polishing surface 111 is separated from the polished surface 111 of the workpiece 4. In the polishing state, the angle and position of the rotating axis of the workpiece fixture 24 need to be adjusted to meet the requirement that the workpiece 4 to be polished can realize passive rotation under the rotation of the polishing disc 11, and then the circular and elliptical ring-shaped outer surfaces of the workpiece 4 are eccentrically polished through the polishing surface 111.

[0045] It should be noted that polishing of the annular and elliptical outer surfaces of some workpieces 4 is a common polishing requirement in the art. Conventional polishing equipment is usually inefficient in processing such annular and elliptical outer surfaces, and leads to poor polishing effects, resulting in irregular defects such as grooves on the annular and elliptical surfaces of the workpiece 4. Using a machine tool to polish the annular and elliptical outer surfaces of the workpiece 4 will greatly increase the cost.

[0046] The present invention can adjust the rotation axis angle of the workpiece fixture 24 through the workpiece fixing component 2, so that the workpiece 4 to be polished can realize passive rotation under the rotation of the polishing disk 11. In the polishing state, the workpiece 4 to be polished on the workpiece fixture 24 can realize passive rotation under the drive of the polishing disk 11, so that the workpiece 4 to be polished and the polishing wheel rotate synchronously, and then the circular annular and elliptical annular outer surfaces of the workpiece 4 are eccentrically polished through the polishing surface 111. The circular annular and elliptical annular outer surfaces of the workpiece 4 can obtain a uniform polishing effect. The polishing efficiency and yield rate of the circular annular outer surface of the workpiece 4 are effectively improved, and the polishing cost of the circular annular outer surface of the workpiece 4 is reduced.

[0047] Further, such as Figure 1 , Figure 3 , Figure 4 As shown, a plurality of workpiece fixing assemblies 2 are disposed on the machine platform 1 . The plurality of workpiece fixing assemblies 2 are evenly disposed around the outer circumference of the polishing disc 11 . The workpiece fixing assemblies 2 include a plurality of workpiece fixtures 24 .

[0048] It is understandable that a plurality of workpiece fixing assemblies 2 are evenly arranged around the outer circumference of the polishing disc 11, and each workpiece fixing assembly 2 includes a plurality of workpiece clamps 24. A plurality of workpieces 4 to be polished can be polished at the same time, effectively improving the efficiency of grinding and polishing the workpieces 4. Moreover, each workpiece clamp 24 is independently and movably connected to the extension rod 22. Therefore, when one of the workpieces 4 is finished grinding and polishing, the corresponding workpiece clamp 24 can be operated independently, the workpiece clamp 24 can be switched from the polishing state to the exit state, the polished workpiece 4 on the workpiece clamp 24 can be removed, and then a new workpiece 4 to be polished can be installed.

[0049] Further, such as Figure 4 , Figure 5 As shown, the workpiece fixing assembly 2 includes: a first fixing base 21, an extension rod 22 and at least one second fixing base 23, the first fixing base 21 is arranged on the machine table 1; the extension rod 22 is arranged on the first fixing base 21, and the extension rod 22 extends toward the polishing disc 11; the second fixing base 23 is movably connected to the extension rod 22, and the workpiece clamp 24 is fixed on the second fixing base 23;

[0050] The second fixed base 23 is used to switch the workpiece fixture 24 between a polishing state and a withdrawal state.

[0051] It should be noted that extending the extension rod 22 toward the polishing disk 11 allows the workpiece fixtures 24 arranged on the extension rod 22 to be arranged roughly along the radius of the polishing disk 11, so that multiple workpiece fixtures 24 arranged on the same extension rod 22 can be polished more evenly.

[0052] Further, such as Figure 1 , Figure 2 , Figure 3 As shown, the extension rod 22 extends in the horizontal direction. The rotation axis of the polishing disc 11 extends in the vertical direction, that is, the polishing disc 11 is arranged horizontally. The polishing surface 111 on the disc in this embodiment is also arranged horizontally. Therefore, the extension rod 22 extends in the horizontal direction, so that the contact surface between the multiple workpiece fixtures 24 arranged on the extension rod 22 and the polishing disc 11 can be consistent. The multiple workpiece fixtures 24 arranged on the extension rod 22 can all obtain the same polishing effect. Avoid polishing errors on the workpiece 4.

[0053] Further, such as Figure 1 , Figure 3 As shown, a plurality of second fixed bases 23 are movably connected to the extension rod 22, and the plurality of second fixed bases 23 are arranged on the extension rod 22, and the second fixed bases 23 are movably connected to the extension rod 22 with the extension rod 22 as a rotation axis. The second fixed base 23 is used to connect the workpiece fixture 24, so that a plurality of second fixed bases 23 are arranged on the extension rod 22, so that a plurality of workpiece fixtures 24 can be arranged on the extension rod 22.

[0054] Further, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the installation angle of the first fixed base 21 is adjustable, and the rotation axis of the first fixed base 21 extends in the vertical direction; the first fixed base 21 can also be used to adjust the horizontal height of the extension rod 22.

[0055] That is, the first fixed base 21 can adjust the installation angle in the horizontal direction, and then adjust the direction of the extension rod 22 in the horizontal direction. In addition, the first fixed base 21 can also adjust the horizontal height of the extension rod 22. Through the above adjustment. The technical effect of adjusting the relative position and angle between the workpiece 4 to be polished and the polishing disk 11 can be achieved, so that the polishing surface 111 fits with the polished surface 111 of the workpiece 4. Then, the angle and position of the rotating axis of the workpiece fixture 24 can be adjusted to the optimal grinding and polishing position, so that the workpiece 4 to be polished can achieve passive rotation under the rotation of the polishing disk 11, and then the circular and elliptical ring-shaped outer surfaces of the workpiece 4 are eccentrically polished through the polishing surface 111.

[0056] Further, such as Figure 6 , Figure 7 As shown, the workpiece fixture 24 includes: a sleeve 241, a rotating central axis 242 and an expansion chuck 243, the sleeve 241 is arranged on the second fixed base 23; the rotating central axis 242 is movably connected in the sleeve 241; the expansion chuck 243 is movably connected to one end of the rotating central axis 242, and the expansion chuck 243 is used to fix the workpiece 4 to be polished;

[0057] Among them, an adjusting rod 2421 is passed through the rotating central axis 242, one end of the adjusting rod 2421 is connected to the expansion chuck 243, the adjusting rod 2421 is used to adjust the expansion or contraction of the expansion chuck 243, and the other end of the adjusting rod 2421 is provided with a knob 2422, which is used to rotate the adjusting rod 2421.

[0058] It can be understood that the rotating central axis 242 is movably connected in the sleeve 241, that is, the rotating central axis 242 is the rotating axis of the workpiece fixture 24, and the rotating central axis 242 can rotate in the sleeve 241, thereby driving the workpiece 4 to be polished to rotate. In addition, one end of the adjusting rotary rod 2421 is connected to the expansion chuck 243, and the end of the adjusting rotary rod 2421 connected to the expansion chuck 243 is provided with a thread. When the adjusting rotary rod 2421 rotates, the effect of screwing in and out of the expansion chuck 243 can be achieved through the thread. An abutting tilting platform is provided on the expansion chuck 243 or on the end of the adjusting rotary rod 2421 connected to the expansion chuck 243. The expansion chuck 243 can be squeezed to shrink or expand by abutting the tilting platform. In some embodiments, when the expansion chuck 243 expands, it can expand from the inside of the workpiece 4 to fix the workpiece 4.

[0059] Furthermore, the weight of the expansion chuck 243 is greater than the weight of the knob 2422, and one end of the expansion chuck 243 hangs down in a natural state. It can be understood that the weight of the expansion chuck 243 is greater than the weight of the knob 2422, which can make the end of the workpiece fixture 24 close to the expansion chuck 243 hang down in a natural state. Then, the workpiece 4 is brought into contact with the polishing surface 111 of the polishing disk 11 to achieve the technical effect of grinding and polishing the workpiece 4.

[0060] Further, such as Figure 2 , Figure 3 As shown, a polishing liquid delivery assembly 3 is also provided on the machine 1, and the polishing liquid delivery assembly 3 is used to deliver polishing liquid to the polishing disc 11. The polishing liquid delivery assembly 3 includes a filtering device 31, and the filtering device 31 is used to filter impurities in the polishing liquid.

[0061] It is understandable that adding polishing liquid can make the grinding and polishing effect better. The filter device 31 is arranged in the polishing liquid conveying assembly 3 to filter out impurities in the polishing liquid, so that the polishing liquid can be purified, recycled and reused.

[0062] In some embodiments, the polishing liquid delivery assembly 3 includes: a liquid storage tank, a collecting pipe and a liquid outlet pipe, the liquid storage tank is arranged on the machine 1; the two ends of the collecting pipe are respectively connected to the polishing liquid collecting tank and the liquid storage tank under the polishing disk 11; one end of the liquid outlet pipe is connected to the liquid storage tank, and the other end is arranged at the upper end of the polishing disk 11, and a water pump is arranged on the liquid outlet pipe, and the water pump is used to pump the polishing liquid onto the polishing surface 111.

[0063] The second aspect of the present application provides a flat grinding method of a high-efficiency flat grinding machine based on any one of the first aspects, and the flat grinding method comprises the following steps:

[0064] Step 1: fix the workpiece 4 to be polished on the workpiece fixture 24, and make the polishing surface 111 of the polishing plate 11 fit with the polished surface 111 of the workpiece 4 by the expansion chuck 243 drooping under its own weight;

[0065] Step 2: adjust the rotation axis angle of the workpiece fixture 24 through the workpiece fixing assembly 2, so that the workpiece 4 to be polished can be passively rotated under the rotation of the polishing disc 11, and the circular and elliptical ring-shaped outer surfaces of the workpiece 4 are eccentrically polished through the polishing surface 111;

[0066] Step three, make sure that the circular and elliptical outer surfaces of the workpiece 4 are polished, swing the sleeve 241 through the second fixed base 23 to move the polished workpiece 4 away from the polishing disk 11, remove the workpiece 4 on the workpiece fixture 24 by rotating the knob 2422, and replace it with a new workpiece 4 to be polished.

[0067] In summary, the present application provides an efficient flat grinding machine and a flat grinding method. The present invention can adjust the rotation axis angle of the workpiece fixture 24 through the workpiece fixing component 2, so that the workpiece 4 to be polished can be passively rotated under the rotation of the polishing disk 11, and the circular annular and elliptical annular outer surfaces of the workpiece 4 are eccentrically polished through the polishing surface 111 of the polishing disk 11. The circular annular and elliptical annular outer surfaces of the workpiece 4 can obtain a uniform polishing effect. The polishing efficiency and yield rate of the circular annular outer surface of the workpiece 4 are effectively improved, and the polishing cost of the circular annular outer surface of the workpiece 4 is reduced.

[0068] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An efficient flat grinder, characterized in that: include: A machine platform, on which a polishing disc is arranged, the rotating axis of the polishing disc extends in a vertical direction, and the upper surface of the polishing disc is a polishing surface for polishing; and at least one workpiece fixing assembly, the workpiece fixing assembly comprising at least one workpiece clamp, the workpiece clamp being used to clamp the workpiece to be polished, the workpiece clamp being a rotatable clamp, and the workpiece fixing assembly being used to adjust the relative position and angle between the workpiece to be polished and the polishing disc so that the polishing surface fits the polished surface of the workpiece; The workpiece fixture has a polishing state in which the polishing surface is in contact with the polished surface of the workpiece, and an exit state in which the polishing surface is separated from the polished surface of the workpiece, and the workpiece fixing assembly includes: A first fixed base, the first fixed base is arranged on the machine platform; An extension rod, the extension rod is arranged on the first fixed base, and the extension rod extends toward the polishing plate; and at least one second fixed base, the second fixed base being movably connected to the extension rod, and the workpiece fixture being fixed on the second fixed base; Wherein, the second fixed base is used to switch the polishing state or the exit state of the workpiece fixture; The workpiece fixture comprises: a sleeve, wherein the sleeve is disposed on the second fixed base; A rotating central axis, the rotating central axis being movably connected in the sleeve; and an expansion chuck, the expansion chuck being movably connected to one end of the rotating central shaft, the expansion chuck being used to fix the workpiece to be polished; Among them, an adjusting rod is passed through the rotating central axis, one end of the adjusting rod is connected to the expansion chuck, the adjusting rod is used to adjust the expansion or contraction of the expansion chuck, and the other end of the adjusting rod is provided with a knob, and the knob is used to rotate the adjusting rod.

2. An efficient flat grinder according to claim 1, characterized in that: A plurality of the workpiece fixing assemblies are arranged on the machine platform, and the plurality of the workpiece fixing assemblies are evenly arranged around the outer circumference of the polishing disc, and the workpiece fixing assemblies include a plurality of workpiece fixtures.

3. A high-efficiency flat grinder according to claim 1, characterized in that: The extension rod extends in a horizontal direction.

4. The high-efficiency flat grinder according to claim 1, characterized in that: A plurality of the second fixed bases are movably connected to the extension rod, the plurality of the second fixed bases are arranged on the extension rod, and the second fixed bases are movably connected to the extension rod with the extension rod as a rotation axis.

5. The high-efficiency flat grinder according to claim 1, characterized in that: The installation angle of the first fixed base is adjustable, and the rotation axis of the first fixed base extends in the vertical direction; the first fixed base can also be used to adjust the horizontal height of the extension rod.

6. The high-efficiency flat grinder according to claim 1, characterized in that: The weight of the expansion chuck is greater than the weight of the knob, and one end of the expansion chuck hangs downward in a natural state.

7. An efficient flat grinder according to claim 6, characterized in that: The machine platform is also provided with a polishing liquid delivery component, which is used to deliver polishing liquid to the polishing disc. The polishing liquid delivery component includes a filtering device, which is used to filter impurities in the polishing liquid.

8. A flat grinding method based on an efficient flat grinding machine according to any one of claims 1 to 7, characterized in that: The flat grinding method comprises the following steps: Fix the workpiece to be polished on the workpiece fixture, and let the expansion chuck sag under its own weight so that the polishing surface of the polishing disc fits with the polished surface of the workpiece; The workpiece fixture is adjusted with a rotating shaft angle through a workpiece fixing assembly, so that the workpiece to be polished can be passively rotated under the rotation of the polishing disc, and the circular and elliptical ring-shaped outer surfaces of the workpiece are subjected to eccentric polishing through the polishing surface; Make sure that the circular and elliptical outer surfaces of the workpiece are polished, swing the sleeve through the second fixed base to move the polished workpiece away from the polishing disk, remove the workpiece on the workpiece fixture by rotating the knob, and replace it with a new workpiece to be polished.

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