Automatic positioning structure and dry type smoothing machine using same

Abstract

The utility model relates to the technical field of smoothing machine equipment, and discloses an automatic positioning structure and a dry type smoothing machine using the same, the automatic positioning structure comprises a control unit, a first driver, a second driver, a first rotating piece, a plurality of second rotating pieces, a first sensor and a second sensor, the first rotating piece is provided with a plurality of first sensing points, and the second rotating piece is provided with a plurality of second sensing points; the second rotating piece is provided with a plurality of second induction points. According to the technical scheme, the small barrels needing to be operated and stopped can be selected according to the preset numbers, the multiple small barrels are sequentially positioned one by one through program control, each small barrel has the combined positioning information of the exclusive first induction point and the exclusive second induction point, the multiple small barrels are distinguished, manual operation is further simplified, and the production efficiency is improved. The problems that a small barrel of a traditional dry type smoothing machine cannot be automatically and accurately positioned, and the small barrel cannot be selected and automatically and accurately rotated to a designated position are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a light machine equipment technical field especially, relates to a kind of automatic positioning structure and dry light machine using it. BACKGROUND

[0002] In traditional dry light machine, large bucket structure revolves around main rotation axis, and small bucket in large bucket structure revolves around vice rotation axis in large bucket structure, and multiple small buckets are used to increase overall efficiency.

[0003] Wherein the positioning of large bucket structure and small bucket relies on manual operation, and operator needs to control motor to park large bucket structure in required position first, then manually rotates small bucket, to position small bucket to the position that is convenient to open, and cannot be accurately positioned control.

[0004] With the improvement of production automation and efficiency requirement, traditional manual positioning method cannot meet the demand of modern production line to high efficiency, accurate operation. Therefore, an automatic and accurate positioning barrel technical scheme is needed. UTILITY MODEL CONTENT

[0005] In view of the above-mentioned defects, the utility model aims at providing an automatic positioning structure and dry light machine using it, which can automatically and accurately position the barrel, simplify the production process and improve the production efficiency.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] An automatic positioning structure includes a control unit, a first driver, a second driver, a first rotating member, a plurality of second rotating members, a first inductor and a second inductor;

[0008] The control unit is electrically connected to the first driver, the second driver, the first inductor and the second inductor;

[0009] The first driver is used to drive the first rotating member to rotate around its own axis, and the second driver is used to drive the second rotating member to rotate around its own axis;

[0010] The first rotating member is provided with a plurality of first sensing points, which rotate with the first rotating member, and the distance between the plurality of first sensing points and the rotating axis is not equal;

[0011] The second rotating member is rotatably connected to the first rotating member, and the second rotating member rotates with the first rotating member, and the second rotating member can rotate around its own axis;

[0012] The second rotating member is provided with a plurality of second sensing points, the second sensing points rotate with the second rotating member, and the plurality of second sensing points on the same second rotating member are not equal in distance from the rotation axis of the second rotating member.

[0013] The first sensor is used for sensing whether the first sensing point is located at a specified position, and the second sensor is used for sensing whether the second sensing point is located at a specified position.

[0014] Preferably, the axes of the first rotating member and the second rotating member are arranged in parallel to each other, and the axes of the plurality of second rotating members are equal in distance from the axis of the first rotating member.

[0015] Preferably, the first sensing point is arranged on the connecting line of the projection of the axis of the first rotating member and the axis of the second rotating member on the rotation plane.

[0016] Preferably, the second rotating member is a positioning disc, one end of the second rotating shaft is connected to the second driver, the other end of the second rotating shaft is connected to the positioning disc, and the positioning disc is arranged in parallel to the second rotating shaft.

[0017] Preferably, the second rotating member is a positioning disc, one end of the second rotating shaft is connected to the second driver, the other end of the second rotating shaft is connected to the positioning disc, and the positioning disc is arranged in parallel to the second rotating shaft.

[0018] The positioning disc is provided with a mounting circular hole matched with the outer diameter of the second rotating shaft, the positioning disc is provided with an elastic gap along the diameter direction of the mounting circular hole, one end of the elastic gap is provided with a circular hollow part, and the other end of the elastic gap is provided with a through hole; the positioning disc is mounted on the second rotating shaft through the mounting circular hole, and is clamped and locked on the second rotating shaft by compressing the elastic gap through a fixing member.

[0019] Preferably, the first sensor and the second sensor are both distance sensors, the first sensing point and the second sensing point are convex points, the detection direction of the first sensor is perpendicular to the rotation plane of the first rotating member, when the first sensing point moves to the detection position of the first sensor, the first sensor detects that the distance becomes smaller, and the detection direction of the second sensor is perpendicular to the rotation plane of the second rotating member, when the second sensing point moves to the detection position of the second sensor, the second sensor detects that the distance becomes smaller.

[0020] Preferably, the first inductors are arranged radially along the radius of rotation of the first rotating member, and the sensing positions of the first inductors correspond to the distances from the axis of the first rotating member.

[0021] The second inductors are arranged radially along the radius of rotation of the second rotating member, and the sensing positions of the second inductors correspond to the distances from the axis of the second rotating member.

[0022] Preferably, the first rotating member is connected to the first driver through a first rotating shaft, the first driver drives the first rotating shaft to rotate the first rotating member around the first rotating shaft, and the second rotating members are distributed equidistantly along the circumference of the first rotating member.

[0023] The automatic positioning dry polishing machine comprises a first motor, a second motor, a fixed support and the automatic positioning structure, the fixed support is used for being fixedly installed with an external fixing mechanism, the first rotating member is rotatably connected to the fixed support, the first rotating member is provided with a plurality of barrel structures, the axes of the barrel structures are parallel to each other, the barrel structures are distributed equidistantly around the first rotating shaft, the barrel structures are driven to rotate by the first rotating shaft, the first rotating shaft is provided with the first rotating member, the barrel structure comprises a plurality of small barrels, the small barrels are distributed equidistantly around the second rotating shaft, and the small barrels are driven to rotate by the second rotating shaft, the second rotating shaft is provided with the second rotating member, the second rotating shaft and the first rotating shaft are parallel to each other, a control unit is electrically connected to the first motor and the second motor, the first motor is used for driving the first rotating member to rotate, and the second motor is used for driving the second rotating shaft to drive the barrel structure and the second rotating member to rotate in a planetary rotation mode.

[0024] The technical scheme provided by the automatic positioning dry polishing machine can have the following beneficial effects:

[0025] 1. Through the cooperation of the first inductor and the first sensing point, the large barrel structure is first accurately positioned, and then through the cooperation of the second inductor and the second sensing point, the small barrel is accurately positioned, and through the identification of the first inductor and the second inductor whether the sensing point is in the specified position, the stop position of the sensing point is accurately positioned, and it is ensured that each small barrel can be accurately stopped at the specified position. Through the combination of the first sensing point and the second sensing point with different distances, each small barrel is one-to-one corresponding, the small barrel that needs to be stopped can be selected by preset number, and through program control, multiple small barrels can be positioned in sequence, each small barrel has its own combination positioning information of the first sensing point and the second sensing point, the differentiation of multiple small barrels is realized, manual operation is further simplified, and production efficiency is improved. The problems that the small barrel of the traditional dry polishing machine cannot be automatically and accurately positioned and cannot be selected and automatically and accurately rotated to the specified position are solved.

[0026] 2. The first sensing point is directly corresponding to the position of the large barrel structure, and the first sensing point can be directly machined on the turntable according to the sensing position of the first inductor, so that the problem of deviation of the first sensing point machining and positioning due to the large size of the turntable and affecting the positioning accuracy is avoided.

[0027] 3. The second rotating shaft is increased, the second rotating shaft drives the whole large barrel structure and the first rotating part to rotate, the stability of the whole structure is increased, the deformation is avoided, and the positioning is affected.

[0028] 4. The positioning disc is clamped on the second rotating shaft through the increase of the elastic gap and the circular hollow part. By adopting this structure, the position of the positioning disc can be conveniently installed and adjusted, so that the relative position between the second sensing point and the small barrel matches the detection position of the second inductor.

[0029] 5. The first inductor and the second inductor are numbered, the position of the small barrel of the large barrel structure is determined by detecting the trigger state of the first inductor and the second inductor with different numbers, and the control unit only needs to be connected with the fixedly installed first inductor and second inductor, so that the problem that the control unit cannot be directly connected with the rotating large barrel structure and small barrel and cannot accurately control the large barrel structure and small barrel to move to the specified position is solved. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 It is a schematic view of the automatic positioning structure of an embodiment of the utility model.

[0031] Figure 2 It is a schematic view of the automatic positioning structure of an embodiment of the utility model.

[0032] Figure 3 It is a schematic view of the automatic positioning structure of an embodiment of the utility model. Figure 2 It is an enlarged view of A in the middle.

[0033] Figure 4 It is a perspective view of the dry type light machine for one embodiment of the utility model.

[0034] Wherein: First rotating part 11, second rotating part 12, first inductor 21, second inductor 22, first induction point 31, second induction point 32, positioning disc 4, installation round hole 41, elastic slit 42, circular hollow part 43, threaded hole 44, large bucket structure 5, small bucket 6, first motor 71, fixed support 72. DETAILED DESCRIPTION

[0035] The embodiments of the utility model are described in detail below, the examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary, only for explaining the utility model, and cannot be understood as limiting the utility model.

[0036] In the description of the utility model, it is understood that the terms "longitudinal", "transverse"

[0037] The orientation or positional relationship indicated by "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as limiting the utility model. In addition, the features limited by "first", "second" can be explicitly or implicitly include one or more features, which are used to distinguish the description of the features, and there is no order or difference.

[0038] In the description of the utility model, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0039] In the description of the utility model, it should be explained that, unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or indirectly connected through an intermediate medium, it can be the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0040] The embodiments of the utility model are described below in conjunction with the drawings.

[0041] An automatic positioning structure comprises a control unit, a first driver, a second driver, a first rotating member 11, a plurality of second rotating members 12, a first sensor 21 and a second sensor 22;

[0042] The control unit is electrically connected to the first driver, the second driver, the first sensor 21 and the second sensor 22;

[0043] The first driver is used to drive the first rotating member 11 to rotate around its own axis, and the second driver is used to drive the second rotating member 12 to rotate around its own axis;

[0044] The first rotating member 11 is provided with a plurality of first sensing points 31, which rotate with the first rotating member 11, and the distances from the first sensing points 31 to the rotating axis of the first rotating member 11 are not equal;

[0045] The second rotating member 12 is rotatably connected to the first rotating member 11, rotates with the first rotating member 11, and can rotate around its own axis;

[0046] The second rotating member 12 is provided with a plurality of second sensing points 32, which rotate with the second rotating member 12, and the distances from the second sensing points 32 on the same second rotating member 12 to the rotating axis of the second rotating member 12 are not equal;

[0047] The first sensor 21 is used to sense whether the first sensing points 31 are located at specified positions, and the second sensor 22 is used to sense whether the second sensing points 32 are located at specified positions.

[0048] As Figure 1 , Figure 2 and Figure 3As shown, in specific embodiments, the dry polishing machine is provided with two rotating discs arranged in parallel, the large barrel structure 5 is rotatably arranged between the two rotating discs, the small barrel 6 is rotatably arranged in the large barrel structure 5 following the large barrel structure 5, the first rotating member 11 is one of the rotating discs, the second rotating member 12 is one of the side faces of the large barrel structure 5 parallel to the rotating plane, the positions of the first sensing points 31 correspond to the positions of the large barrel structure 5 one by one, the positions of the second sensing points 32 correspond to the positions of the small barrel 6 one by one, the first sensor 21 and the second sensor 22 are fixed on the external support, and the control unit is pre-provided with the distance values of the first sensing points 31 and the second sensing points 32 corresponding to different small barrels 6 and the rotating shafts thereof. When positioning the small barrel 6, the number of the small barrel 6 to be positioned is manually input to the control unit, the control unit extracts the distance values of the first sensing points 31 and the second sensing points 32 corresponding to the pre-provided number and the rotating shafts thereof, the control unit controls the first driver to drive the rotating disc to rotate, when the first sensing point 31 corresponding to the large barrel structure 5 where the small barrel 6 is located rotates to the sensing position where the distance value of the first sensing point 31 matches the first sensor 21, the first driver stops rotating the rotating disc; then the second driver drives the large barrel structure 5 to rotate, when the second sensing point 32 corresponding to the small barrel 6 rotates to the sensing position where the distance value of the second sensing point 32 matches the second sensor 22, the second driver stops rotating the large barrel structure 5, and the accurate positioning of the small barrel 6 is completed.

[0049] With this structure, through the cooperation of the first sensor 21 and the first sensing point 31, the large barrel structure 5 is first accurately positioned, and then through the cooperation of the second sensor 22 and the second sensing point 32, the small barrel 6 is accurately positioned. Through the identification of the first sensor and the second sensor whether the sensing point is in the specified position, the stop position of the accurately positioned sensing point is determined, and it is ensured that each small barrel 6 can be accurately stopped at the specified position. Through the combination of the first sensing points 31 and the second sensing points 32 with different distances, each small barrel 6 is one-to-one corresponding, the small barrel 6 to be operated and stopped can be selected through the pre-provided number, and through program control, multiple small barrels 6 can be positioned in sequence. Each small barrel 6 has its own exclusive combination positioning information of the first sensing point and the second sensing point, the differentiation of multiple small barrels 6 is realized, the manual operation is further simplified, and the production efficiency is improved. The problem that the small barrel 6 of the traditional dry polishing machine cannot be accurately positioned automatically and cannot be selected and accurately rotated to the specified position automatically is solved.

[0050] Preferably, the shafts of the first rotating member 11 and the second rotating member 12 are arranged in parallel to each other, and the shafts of the second rotating members 12 are all equal in distance to the shaft of the first rotating member 11.

[0051] With the structure, the trajectories of the first rotating member 11 and the second rotating member 12 are stable, and the first sensing point 31 and the second sensing point 32 are easy to be positioned.

[0052] Preferably, the first sensing point 31 is arranged on a line connecting the projections of the shaft centers of the first rotating member 11 and the second rotating member 12 on the rotation plane.

[0053] In a specific embodiment, the first rotating member 11 is a rotating disc on the side of the dry tumbling machine, the second rotating member 12 is connected to the large barrel structure 5 of the dry tumbling machine, and the first inductor 21 is fixed to the fixed support 72 of the dry tumbling machine. With the structure, the first sensing point 31 is directly corresponding to the position of the large barrel structure 5, and the first sensing point 31 can be directly machined on the rotating disc according to the sensing position of the first inductor 21, so that the machining and positioning deviation of the first sensing point 31 due to the large size of the rotating disc is avoided, and the positioning accuracy is affected.

[0054] Preferably, the second rotating shaft is further arranged, the second rotating shaft is connected to the second rotating member 12 and the second driver, and the second driver drives the second rotating shaft to rotate the second rotating member 12 around the second rotating shaft.

[0055] With the second rotating shaft, the second rotating shaft drives the first rotating member 11 and the large barrel structure 5 thereon to rotate as a whole, the stability of the whole structure is improved, the deformation is avoided, and the positioning is affected.

[0056] Preferably, the second rotating member 12 is the positioning disc 4, one end of the second rotating shaft is connected to the second driver, the other end of the second rotating shaft is connected to the positioning disc 4, and the positioning disc 4 is arranged in parallel to the second rotating shaft.

[0057] The positioning disc 4 is provided with a mounting circular hole 41 matched with the outer diameter of the second rotating shaft, the positioning disc 4 is provided with an elastic gap 42 along the diameter direction of the mounting circular hole 41, one end of the elastic gap 42 is provided with a circular hollow part 43, and the other end of the elastic gap 42 is provided with a through hole; the positioning disc 4 is mounted on the second rotating shaft through the mounting circular hole 41, and is clamped and locked on the second rotating shaft by compressing the elastic gap 42 through the fixing member.

[0058] As shown in Figure 3 With the increase of the elastic gap 42 and the circular hollow part 43, the positioning disc 4 is clamped on the second rotating shaft. With the structure, the positioning disc 4 is convenient to install and adjust the position, so that the relative position between the second sensing point 32 and the small barrel 6 is matched with the detection position of the second inductor 22.

[0059] In specific embodiments, the positioning disc is made of aluminum alloy, and the positioning disc 4 is provided with threaded holes 44 perpendicular to the length direction of the elastic gap 42, and the elastic gap 42 is compressed by the matched bolts to lock the positioning disc 4.

[0060] Preferably, the first sensor 21 and the second sensor 22 are both distance sensors, the first sensing point 31 and the second sensing point 32 are convex points, the detection direction of the first sensor 21 is perpendicular to the rotation plane of the first rotating member 11, when the first sensing point 31 moves to the detection position of the first sensor 21, the first sensor 21 detects that the distance becomes smaller, and the detection direction of the second sensor 22 is perpendicular to the rotation plane of the second rotating member 12, when the second sensing point 32 moves to the detection position of the second sensor 22, the second sensor 22 detects that the distance becomes smaller.

[0061] In specific embodiments, the first sensor 21 and the second sensor 22 are distance setting type photoelectric sensors, when the photoelectric sensor detects that the measured distance is smaller than the preset distance, the first sensor 21 or the second sensor 22 judges that the first sensing point 31 or the first sensing point 31 is located at the specified position.

[0062] Preferably, the first sensor 21 is radially spaced apart along the radius of the first rotating member 11, the distance between the sensing position of the plurality of first sensors 21 and the axis of the first rotating member 11 corresponds to the distance between the plurality of first sensing points 31 and the axis of the first rotating member 11 one by one.

[0063] The second sensor 22 is radially spaced apart along the radius of the second rotating member 12, the distance between the sensing position of the plurality of second sensors 22 and the axis of the second rotating member 12 corresponds to the distance between the plurality of second sensing points 32 and the axis of the second rotating member 12 one by one.

[0064] By numbering the plurality of first sensors 21 and the plurality of second sensors 22, the positions of the large bucket structure 5 and the small bucket 6 are determined by detecting the triggering state of the first sensor 21 and the second sensor 22 with different numbers, and the control unit only needs to be connected to the fixedly installed first sensor 21 and the second sensor 22, solving the problem that the control unit is difficult to directly connect to the rotating large bucket structure 5 and the small bucket 6, and cannot accurately control the large bucket structure 5 and the small bucket 6 to move to the specified position.

[0065] Preferably, it further includes a first rotating shaft, the first rotating shaft is connected to the first rotating member 11 and the first driver, the first driver drives the first rotating shaft to drive the first rotating member 11 to rotate around the first rotating shaft, and the plurality of second rotating members 12 are distributed equidistantly along the circumference of the first rotating member 11.

[0066] In a specific embodiment, the first rotating component 11 is the turntable of the dry sizing machine, and the second rotating component 12 is the large barrel structure 5 of the sizing machine. The turntable and the large barrel structure 5 on it are rotated as a whole by the first rotating shaft. The large barrel structure 5 is distributed at equal intervals along the circumference of the turntable to ensure the balance and stability of the overall rotating structure.

[0067] An automatically positioned dry quenching machine includes a first motor 71, a second motor, a fixed bracket 72, and the aforementioned automatic positioning structure. The fixed bracket 72 is used for fixed installation with an external fixing mechanism. A first rotating member 11 is rotatably connected to the fixed bracket 72. The first rotating member 11 is equipped with a plurality of large barrel structures 5. The axes of the plurality of large barrel structures 5 are parallel to each other and are evenly spaced around a first rotating shaft. The plurality of large barrel structures 5 are driven to rotate by the first rotating shaft. The first rotating shaft is equipped with the first rotating member 11. Each large barrel structure 5 includes a plurality of small barrels 6. The plurality of small barrels 6 are spaced around a second rotating shaft and are driven to rotate by the second rotating shaft. The second rotating shaft is equipped with a second rotating member 12. The second rotating shaft and the first rotating shaft are parallel to each other. The control unit is electrically connected to the first motor 71 and the second motor. The first motor 71 is used to drive the first rotating member 11 to rotate, and the second motor is used to drive the second rotating shaft to drive the large barrel structures 5 and the second rotating member 12 to perform planetary rotation.

[0068] like Figure 4 As shown in the specific embodiment, the dry polishing machine is equipped with several large barrel structures 5 and several small barrels 6. The small barrels 6 are arranged in groups inside the large barrel structures 5. The second rotating component 12 is located on one side of the large barrel structure 5. The large barrel structure 5 is located on the first rotating component 11. The first motor 71 drives the large barrel structures 5 to rotate with the first rotating component 11. The second motor drives the large barrel structures 5, small barrels 6, and the second rotating component 12 to rotate together in a planetary manner. The interior of the small barrel 6 is used to hold the workpiece and polishing abrasive, realizing dry polishing. When it is necessary to operate any small barrel 6, the operator can move the specified small barrel 6 to the specified position through the control unit in the automatic positioning structure, so as to open the specified small barrel 6 to check the polishing status of the workpiece inside.

[0069] Other configurations and operations according to the embodiments of this utility model are known to those skilled in the art and will not be described in detail here.

[0070] In the description of the present specification, the description referring to the terms "embodiment", "example", and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0071] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. An automatic positioning structure, characterized by: The control unit, the first driver, the second driver, the first rotating member, the second rotating members, the first sensor and the second sensor; The control unit is electrically connected with the first driver, the second driver, the first sensor and the second sensor; The first driver is used to drive the first rotating member to rotate around its own axis, and the second driver is used to drive the second rotating member to rotate around its own axis; The first rotating member is provided with a plurality of first sensing points, the first sensing points rotate with the first rotating member, and the distances from the first sensing points to the rotating axis of the first rotating member are all unequal; The second rotating member is rotatably connected with the first rotating member, rotates with the first rotating member, and can rotate around its own axis; The second rotating member is provided with a plurality of second sensing points, the second sensing points rotate with the second rotating member, and the distances from the second sensing points on the same second rotating member to the rotating axis of the second rotating member are all unequal; The first sensor is used to sense whether the first sensing points are located at specified positions, and the second sensor is used to sense whether the second sensing points are located at specified positions.

2. An automatic positioning structure according to claim 1, characterized in that: The axes of the first rotating member and the second rotating members are arranged in parallel to each other, and the distances from the axes of the second rotating members to the axis of the first rotating member are all equal.

3. An automatic positioning structure according to claim 2, characterized in that: The first sensing points are arranged on the connecting line of the projections of the axes of the first rotating member and the second rotating member on the rotating plane.

4. An automatic positioning structure according to claim 1, characterized in that: A second rotating shaft is further arranged, the second rotating shaft is connected with the second rotating member and the second driver, and the second driver drives the second rotating shaft to rotate the second rotating member around the second rotating shaft.

5. An automatic positioning structure according to claim 4, characterized in that: The second rotating member is a positioning disc, one end of the second rotating shaft is connected with the second driver, the other end of the second rotating shaft is connected with the positioning disc, and the positioning disc is arranged in parallel to the second rotating shaft. The positioning disc is provided with a mounting circular hole matched with the outer diameter of the second rotating shaft, the positioning disc is provided with an elastic gap along the diameter direction of the mounting circular hole, one end of the elastic gap is provided with a circular hollow part, and the other end of the elastic gap is provided with a through hole; the positioning disc is mounted on the second rotating shaft through the mounting circular hole, and is clamped and locked on the second rotating shaft by compressing the elastic gap through a fixing member.

6. An automatic positioning structure according to claim 1, characterized in that: The first sensor and the second sensor are distance sensors, the first sensing points and the second sensing points are convex points, the detection direction of the first sensor is perpendicular to the rotating plane of the first rotating member, when the first sensing points move to the detection position of the first sensor, the first sensor detects that the distance becomes smaller, and the detection direction of the second sensor is perpendicular to the rotating plane of the second rotating member, when the second sensing points move to the detection position of the second sensor, the second sensor detects that the distance becomes smaller.

7. An automatic positioning structure according to claim 6, characterized in that: The first inductors are radially spaced along the radius of rotation of the first rotating member, and the inductive positions of the first inductors correspond to the distances from the axis of the first rotating member. The second inductors are radially spaced along the radius of rotation of the second rotating member, and the inductive positions of the second inductors correspond to the distances from the axis of the second rotating member.

8. An automatic positioning structure according to claim 1, characterized in that: The first rotating member is connected to the first driving device through a first rotating shaft, and the first driving device drives the first rotating shaft to rotate the first rotating member around the first rotating shaft.

9. An automatically positioning dry polishing machine characterized by: The first rotating member is rotatably connected to the fixed support, and the first rotating member is provided with a plurality of barrel structures, the axes of the barrel structures are parallel to each other, and the barrel structures are equally spaced around the first rotating shaft, the barrel structures are driven to rotate by the first rotating shaft, the first rotating shaft is provided with the first rotating member, the barrel structure comprises a plurality of small barrels, the small barrels are equally spaced around the second rotating shaft, and the small barrels are driven to rotate by the second rotating shaft, the second rotating shaft is provided with the second rotating member, the second rotating shaft is parallel to the first rotating shaft, the control unit is electrically connected to the first motor and the second motor, the first motor is used to drive the first rotating member to rotate, and the second motor is used to drive the second rotating shaft to drive the barrel structure and the second rotating member to rotate in a planetary manner.

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