A polishing device for mechanical manufacturing design

Abstract

The application relates to the technical field of polishing equipment, in particular to a polishing device for mechanical manufacturing design, which comprises a base, a polishing mechanism arranged on the base and used for polishing parts, two first adjusting mechanisms symmetrically arranged on the two sides of the base, and the cooperation of the first adjusting mechanism, a second adjusting mechanism and a third adjusting mechanism is designed, and the three mechanisms are cooperatively matched, so that the polishing mechanism can be flexibly moved to a target position in a three-dimensional space; through the cooperation of a mounting seat, an adjusting shaft, a mounting shaft and an adjusting seat, the working posture and the polishing angle of the polishing mechanism can be flexibly and multi-angle adjusted according to the structural features of various irregular to-be-polished surface types of the part planes, inclined planes and curved surfaces, the polishing head can be conveniently attached to the to-be-polished surface of the part for attached polishing, processing defects such as local incomplete polishing, out-of-position edge polishing and uneven polishing allowance of curved surfaces are avoided, and the polishing precision of the special-shaped part and the surface processing consistency are greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of grinding equipment technology, and specifically relates to a grinding device for mechanical manufacturing design. Background Technology

[0002] In the mechanical manufacturing design and processing process, grinding of parts is often an essential finishing work, and grinding requires the use of grinding devices. Chinese patent application number CN202020851352.9, patent title: A grinding device for manufacturing mechanical parts, includes a base, grinding wheels, a cleaning device, and a dust collection device. A control panel is electrically connected to the center end of the base. Support legs and rollers are fixedly connected to the four corners of the base bottom, and the rollers are equipped with wheel brakes. A retractable rod is connected to one side of the roller and fixedly connected to the bottom of the base. Fixed frames are symmetrically arranged at both ends of the top of the base. A crossbar is fixedly connected to the inner side of the top of the fixed frames. A first drive motor is opened at the bottom of each fixed frame and fixedly connected inside the base. A first ball screw is rotatably connected to the top of the first drive motor and is located inside the fixed frame. First sliders are symmetrically slidably connected to the outer sides of the first ball screws. U-shaped frames are fixedly connected inside the two first sliders. This device has a simple and reasonable structure, a novel design, and high grinding efficiency for mechanical parts. However, in the above solution, the angle of the grinding wheel is fixed. When grinding irregularly shaped parts, the surface of these parts has irregular shapes such as bevels and curves. The fixed grinding wheel cannot easily conform to these irregular shapes, easily leading to defects such as localized missed grinding, inadequate grinding of edges and corners, and uneven grinding allowance on curved surfaces. Therefore, overcoming these technical problems and defects is a key issue that needs to be addressed. Summary of the Invention

[0003] This invention provides a grinding device for mechanical manufacturing design, which can adjust the grinding angle so that the grinding head fits the irregular surface of irregular parts for grinding.

[0004] To achieve the above-mentioned objectives, the technical solution of this invention is as follows: a grinding device for mechanical manufacturing design, comprising a base; a grinding mechanism disposed on the base for grinding parts; two first adjustment mechanisms symmetrically installed on both sides of the base for lateral adjustment of the grinding mechanism; a second adjustment mechanism installed between the two first adjustment mechanisms for longitudinal adjustment of the grinding mechanism; a third adjustment mechanism installed on the second adjustment mechanism for adjusting the height of the grinding mechanism; a mounting seat installed on the third adjustment mechanism; an adjustment shaft rotatably connected to the mounting seat; a drive assembly for driving the adjustment shaft to rotate installed on the mounting seat; a mounting shaft fixedly connected to the adjustment shaft; an adjustment seat rotatably mounted on the mounting shaft; the adjustment seat fixedly connected to the grinding mechanism; a limit gear fixedly connected to the adjustment seat; and a limit assembly for limiting the limit gear fixedly mounted on the mounting shaft.

[0005] In the above-mentioned grinding device for mechanical manufacturing design, the first adjustment mechanism, the second adjustment mechanism and the third adjustment mechanism have the same structure. The first adjustment mechanism includes a lead screw that is rotatably mounted on a base in a transverse direction. An adjustment motor that can drive the lead screw to rotate is fixedly mounted on the base. A sliding seat is threadedly connected to the lead screw. The sliding seat is fixedly connected to the second adjustment mechanism. A limiting rod that can limit the sliding seat is fixedly mounted on the base.

[0006] In the aforementioned grinding device for mechanical manufacturing design, the grinding mechanism includes a grinding motor and a grinding head. The grinding motor is fixedly mounted on an adjusting seat, and the output shaft of the grinding motor is fixedly mounted with a grinding head capable of grinding parts.

[0007] In the aforementioned grinding device for mechanical manufacturing design, the drive assembly includes a drive frame fixedly connected to a mounting base and a worm gear rotatably mounted on the drive frame. A handwheel is fixedly mounted on the worm gear, and a worm wheel meshing with the worm gear is fixedly mounted on the adjusting shaft.

[0008] In the aforementioned grinding device for mechanical manufacturing design, the limiting component includes a limiting frame, a T-shaped threaded rod, a straight toothed plate, and a round rod. The limiting frame is fixedly connected to the mounting shaft. The T-shaped threaded rod is threadedly connected to the middle of the limiting frame through a threaded hole. A straight toothed plate that meshes with a limiting gear is rotatably mounted on the T-shaped threaded rod. Round rods are fixedly connected to the symmetrical sides of the straight toothed plate. The end of the round rod away from the straight toothed plate passes through the limiting frame and extends to the outside of the limiting frame.

[0009] In the aforementioned grinding device for mechanical manufacturing design, a mounting cylinder is fixedly connected to the middle of the straight tooth plate, and the T-shaped end of the T-shaped threaded rod is rotatably connected inside the mounting cylinder. A retaining ring is fixedly connected inside the mounting cylinder to prevent the T-shaped end of the T-shaped threaded rod from slipping out.

[0010] In the aforementioned grinding device for mechanical manufacturing design, the limiting frame is threadedly connected to a limiting screw through a threaded hole, and one of the round rods has a limiting hole into which the limiting screw can be inserted.

[0011] In the aforementioned grinding device for mechanical manufacturing design, rotating shafts are symmetrically mounted on both sides of the base. Electric push rods are fixedly connected to the ends of the two rotating shafts that are close to each other. A clamping plate is fixedly connected to the extended end of each electric push rod. A driven gear is fixedly mounted on one of the rotating shafts. A drive motor is fixedly mounted on the base. The output shaft of the drive motor is fixedly connected to a driving gear that meshes with the driven gear.

[0012] Compared with the prior art, the grinding device for mechanical manufacturing design of the present invention has the following beneficial effects: 1. A grinding device for mechanical manufacturing design according to the present invention, through the coordinated design of a first adjustment mechanism, a second adjustment mechanism and a third adjustment mechanism, the three work together to enable the grinding mechanism to move flexibly to the target position in three-dimensional space. Furthermore, through the coordinated design of the mounting base, the adjustment shaft, the mounting shaft and the adjustment base, the working posture and grinding angle of the grinding mechanism can be flexibly and at multiple angles adjusted according to the structural characteristics of various irregular surfaces to be ground, such as planes, inclined surfaces, and curved surfaces of the parts. This facilitates the grinding head to fit the surface to be ground of the parts for close-fitting grinding, avoiding processing defects such as local missed grinding, inadequate grinding of edges and corners, and uneven grinding allowance of curved surfaces. This significantly improves the grinding accuracy and surface finish consistency of irregular parts, and significantly improves the grinding quality of parts and the yield of finished products.

[0013] 2. A grinding device for mechanical manufacturing design according to the present invention, wherein the drive component adopts a worm gear transmission form, the worm gear has a self-locking characteristic, which can lock the adjusting shaft after rotating to any position, and can prevent the adjusting shaft from rotating unexpectedly due to external factors such as grinding cutting vibration, external force contact, etc.; through the cooperative design of the limiting gear and the limiting component, the adjusting seat can be limited and fixed, effectively avoiding the adjusting seat from rotating arbitrarily due to external factors such as grinding cutting vibration, external force contact, etc. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of a grinding device for mechanical manufacturing design according to the present invention; Figure 2 This is a side view of a grinding device for mechanical manufacturing design according to the present invention; Figure 3 This is a partial structural diagram of the angle adjustment mechanism of a grinding device for mechanical manufacturing design according to the present invention; Figure 4 This is a partial side view of the angle adjustment mechanism of a grinding device for mechanical manufacturing design according to the present invention. Figure 5 This is a schematic diagram of the rear structure of the grinding mechanism angle adjustment part of a grinding device for mechanical manufacturing design according to the present invention; Figure 6 This is a schematic diagram of the structure of a limiting component of a grinding device for mechanical manufacturing design according to the present invention.

[0015] In the diagram: 1. Base; 2. First adjusting mechanism; 201. Lead screw; 202. Adjusting motor; 203. Sliding seat; 204. Limiting rod; 3. Second adjusting mechanism; 4. Third adjusting mechanism; 5. Mounting seat; 501. Adjusting shaft; 502. Mounting shaft; 6. Drive assembly; 601. Drive frame; 602. Worm gear; 603. Worm; 604. Handwheel; 7. Adjusting seat; 701. Limiting gear; 8. Limiting assembly; 801. Limiting frame; 802. T-shaped threaded rod; 803. Straight tooth plate; 804. Round rod; 805. Mounting cylinder; 806. Retaining ring; 807. Limiting screw; 9. Grinding mechanism; 901. Grinding motor; 902. Grinding head; 10. Rotating shaft; 1001. Driven gear; 11. Electric push rod; 1101. Clamping plate; 12. Drive motor; 1201. Driving gear. Detailed Implementation

[0016] The grinding device for mechanical manufacturing design according to the present invention will be described in more detail below with reference to the accompanying drawings and specific embodiments.

[0017] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0018] This embodiment discloses a grinding device for mechanical manufacturing design. Through the coordinated design of the first adjustment mechanism 2, the second adjustment mechanism 3, and the third adjustment mechanism 4, the grinding mechanism 9 can be flexibly moved to the target position in three-dimensional space. Furthermore, through the coordinated design of the mounting base 5, the adjustment shaft 501, the mounting shaft 502, and the adjustment base 7, the working posture and grinding angle of the grinding mechanism 9 can be flexibly and at multiple angles adjusted according to the structural characteristics of various irregular surfaces to be ground, such as planes, inclined surfaces, and curved surfaces of the parts. This facilitates the grinding head 902 to fit the surface to be ground of the parts for close-fitting grinding, avoiding processing defects such as local missed grinding, inadequate grinding of edges and corners, and uneven grinding allowance of curved surfaces. This significantly improves the grinding accuracy and surface finish consistency of irregular parts, and significantly improves the grinding quality and finished product yield of parts.

[0019] Reference Figures 1-6 It mainly includes a base 1; a grinding mechanism 9, which is set on the base 1 and used to grind parts; two first adjustment mechanisms 2, which are symmetrically installed on both sides of the base 1 and used to adjust the grinding mechanism 9 laterally; a second adjustment mechanism 3 is installed between the two first adjustment mechanisms 2 and used to adjust the grinding mechanism 9 longitudinally; a third adjustment mechanism 4 is installed on the second adjustment mechanism 3 and used to adjust the height of the grinding mechanism 9; a mounting seat 5, which is installed on the third adjustment mechanism 4; an adjustment shaft 501 is rotatably connected to the mounting seat 5; a drive assembly 6 that can drive the adjustment shaft 501 to rotate is installed on the mounting seat 5; a mounting shaft 502 is fixedly connected to the adjustment shaft 501; an adjustment seat 7 is rotatably installed on the mounting shaft 502; the adjustment seat 7 is fixedly connected to the grinding mechanism 9; a limit gear 701 is fixedly connected to the adjustment seat 7; and a limit assembly 8 that can limit the limit gear 701 is fixedly installed on the mounting shaft 502. The drive assembly 6 adopts a worm gear 602 and worm 603 transmission form. The worm gear 602 and worm 603 have self-locking characteristics, which can lock the adjusting shaft 501 after it rotates to any position, thus preventing the adjusting shaft 501 from rotating unexpectedly due to external factors such as grinding and cutting vibration or external force contact. Through the cooperative design of the limiting gear 701 and the limiting assembly 8, the adjusting seat 7 can be limited and fixed, effectively preventing the adjusting seat 7 from rotating arbitrarily due to external factors such as grinding and cutting vibration or external force contact.

[0020] In this embodiment, refer to Figure 1 and Figure 2The first adjustment mechanism 2, the second adjustment mechanism 3 and the third adjustment mechanism 4 have the same structure. The first adjustment mechanism 2 includes a lead screw 201 that is rotatably mounted on the base 1 in a transverse direction. An adjustment motor 202 that can drive the lead screw 201 to rotate is fixedly mounted on the base 1. A sliding seat 203 is threadedly connected to the lead screw 201. The sliding seat 203 is fixedly connected to the second adjustment mechanism 3. A limiting rod 204 that can limit the sliding seat 203 is fixedly mounted on the base 1. In practical use, the control motor 202 drives the lead screw 201 to rotate, and the lead screw 201 drives the sliding seat 203 to rotate. However, under the limit of the limit rod 204, the sliding seat 203 moves horizontally.

[0021] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The grinding mechanism 9 includes a grinding motor 901 and a grinding head 902. The grinding motor 901 is fixedly mounted on the adjusting seat 7, and the grinding head 902, which can grind parts, is fixedly mounted on the output shaft of the grinding motor 901. In actual use, the grinding motor 901 is controlled to drive the grinding head 902 to rotate, thereby performing grinding operations on the parts.

[0022] In this embodiment, refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 The drive assembly 6 includes a drive frame 601 fixedly connected to the mounting base 5 and a worm gear 603 rotatably mounted on the drive frame 601. A handwheel 604 is fixedly mounted on the worm gear 603, and a worm wheel 602 meshing with the worm gear 603 is fixedly mounted on the adjusting shaft 501. In actual use, the worm gear 603 is rotated by the handwheel 604, and the worm gear 603 meshes with the worm wheel 602, causing the worm wheel 602 to rotate, which in turn drives the adjusting shaft 501 to rotate. At the same time, the worm wheel 602 and the worm gear 603 have a self-locking characteristic, which allows the adjusting shaft 501 to be locked after rotating to any position, preventing the adjusting shaft 501 from rotating unexpectedly due to external factors such as grinding and cutting vibration or external force contact.

[0023] In this embodiment, refer to Figures 1-6The limiting component 8 includes a limiting frame 801, a T-shaped threaded rod 802, a straight toothed plate 803, and a round rod 804. The limiting frame 801 is fixedly connected to the mounting shaft 502. The T-shaped threaded rod 802 is threadedly connected to the middle of the limiting frame 801 through a threaded hole. The straight toothed plate 803, which meshes with the limiting gear 701, is rotatably mounted on the T-shaped threaded rod 802. The round rod 804 is fixedly connected to the symmetrical sides of the straight toothed plate 803. One end of the round rod 804 away from the straight toothed plate 803 passes through the limiting frame 801 and extends to the outside of the limiting frame 801. The middle of the straight toothed plate 803 is fixedly connected to the mounting cylinder 805. The T-shaped end of the T-shaped threaded rod 802 is rotatably connected inside the mounting cylinder 805. A retaining ring 806 is fixedly connected inside the mounting cylinder 805 to prevent the T-shaped end of the T-shaped threaded rod 802 from slipping out. In practical use, rotating the T-shaped threaded rod 802 causes the T-shaped threaded rod 802 to press against the straight tooth plate 803, thereby causing the straight tooth plate 803 to move and mesh with the limiting gear 701, limiting the limiting gear 701, thereby limiting and fixing the adjusting seat 7 and preventing the adjusting seat 7 from rotating at will. When it is necessary to adjust the angle of the adjusting seat 7, rotate the T-shaped threaded rod 802 in the opposite direction. The T-shaped threaded rod 802 presses against the retaining ring 806 inside the mounting cylinder 805, thereby driving the straight tooth plate 803 to move in the opposite direction until the straight tooth plate 803 is no longer engaged with the limit gear 701. At this time, the adjusting seat 7 can be rotated and adjusted as needed.

[0024] In this embodiment, refer to Figures 1-6 The limiting frame 801 is threadedly connected to a limiting screw 807 via a threaded hole. One of the round rods 804 has a limiting hole into which the limiting screw 807 can be inserted (it should be noted that when the limiting gear 701 is engaged with the spur plate 803, the limiting hole on the round rod 804 is just inserted into the limiting screw 807). In actual use, the limiting screw 807 is rotated to move out of the limiting hole, and the spur plate 803 can be moved as needed. When the spur plate 803 is engaged with the limiting gear 701, the limiting screw 807 is rotated in the opposite direction to insert into the limiting hole, thereby limiting the round rod 804 and preventing the spur plate 803 from moving arbitrarily.

[0025] In this embodiment, refer to Figure 1 and Figure 2The base 1 has symmetrical rotating shafts 10 mounted on both sides. The ends of the two rotating shafts 10 that are close to each other are fixedly connected to electric push rods 11. The extended end of each electric push rod 11 is fixedly connected to a clamping plate 1101. A driven gear 1001 is fixedly mounted on one of the rotating shafts 10. A drive motor 12 is fixedly mounted on the base 1. The output shaft of the drive motor 12 is fixedly connected to a drive gear 1201 that meshes with the driven gear 1001.

[0026] In practical use, the part to be polished is placed between two clamping plates 1101. The electric push rod 11 is controlled, which drives the clamping plates 1101 to move, thereby clamping the part between the two clamping plates 1101. During the clamping process, when different positions of the part need to be polished, the drive motor 12 is controlled, which drives the drive gear 1201 to rotate. The drive gear 1201 meshes with the driven gear 1001, causing the driven gear 1001 to rotate. The driven gear 1001 drives the rotating shaft 10 to rotate.

[0027] The working principle of a grinding device for mechanical manufacturing design according to the present invention is as follows: In the mechanical manufacturing design process, when it is necessary to grind the parts, the parts are placed between two clamping plates 1101, and the electric push rod 11 is controlled so that the two clamping plates 1101 clamp the parts. After clamping is completed, start the adjustment motor 202 of the first adjustment mechanism 2. The adjustment motor 202 drives the lead screw 201 to rotate, and the lead screw 201 drives the sliding seat 203 to rotate. However, under the limit of the limit rod 204, the sliding seat 203 moves horizontally. Repeat the above steps to adjust the second adjustment mechanism 3 so that the grinding head 902 moves to the appropriate position. Then, the worm 603 is rotated via handwheel 604, causing it to mesh with the worm wheel 602, which in turn rotates the adjusting shaft 501. Once the shaft reaches the desired position, the limiting screw 807 is turned until it moves out of the limiting hole. At this point, the T-thread rod 802 is rotated, causing it to move the spur gear 803 until it no longer meshes with the limiting gear 701. Then, the adjusting seat 7 is rotated as needed until it reaches the desired position. After reaching the appropriate position, the T-shaped threaded rod 802 is rotated in the reverse direction, causing the T-shaped threaded rod 802 to drive the straight tooth plate 803 to move until the straight tooth plate 803 meshes with the limit gear 701, thereby preventing the limit gear 701 from rotating and thus preventing the adjusting seat 7 from rotating. When the adjustment is rotated to the appropriate position, the grinding motor 901 is controlled, and the grinding motor 901 drives the grinding head 902 to rotate. During the rotation, the third adjusting mechanism 4 is controlled to adjust the height of the grinding head 902, thereby performing the grinding operation on the parts.

[0028] It should be noted that, in actual implementation, the structure depicted in the accompanying drawings is not a fixed or unchanging embodiment. The components of the embodiments of the invention described and shown in these drawings can typically be arranged and designed in various different configurations. Furthermore, the accompanying drawings and abstract drawings are merely illustrative and do not represent the specific structure or actual quantity in a concrete implementation.

[0029] Unless otherwise defined, the technical or scientific terms used herein should be understood in their ordinary sense as would be understood by one of ordinary skill in the art to which this invention pertains. The use of terms such as "a" or "an" in this specification and claims does not necessarily indicate a limitation of quantity. Terms such as "comprising" or "including" mean that the element or component preceding the word encompasses the element or component listed following the word and its equivalents, without excluding other elements or components. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0030] The exemplary embodiments of the present invention have been described in detail above with reference to preferred embodiments. However, those skilled in the art will understand that various modifications and alterations can be made to the above specific embodiments without departing from the concept of the present invention, and various combinations can be made to the various technical features and structures proposed in the present invention without exceeding the protection scope of the present invention.

Claims

1. A grinding device for mechanical manufacturing design, characterized in that, include: Base; A grinding mechanism, mounted on the base, is used to grind the parts; Two first adjustment mechanisms are symmetrically installed on both sides of the base for lateral adjustment of the grinding mechanism. A second adjustment mechanism is installed between the two first adjustment mechanisms for longitudinal adjustment of the grinding mechanism. A third adjustment mechanism is installed on the second adjustment mechanism for adjusting the height of the grinding mechanism. A mounting base is installed on the third adjustment mechanism. An adjustment shaft is rotatably connected to the mounting base. A drive assembly capable of driving the adjustment shaft to rotate is installed on the mounting base. A mounting shaft is fixedly connected to the adjustment shaft. An adjustment base is rotatably installed on the mounting shaft. The adjustment base is fixedly connected to the grinding mechanism. A limiting gear is fixedly mounted on the adjusting seat, and a limiting component that can limit the limiting gear is fixedly mounted on the mounting shaft.

2. The grinding device for mechanical manufacturing design according to claim 1, characterized in that: The first, second, and third adjustment mechanisms have the same structure. The first adjustment mechanism includes a lead screw that is rotatably mounted on a base in a transverse direction. An adjustment motor that can drive the lead screw to rotate is fixedly mounted on the base. A sliding seat is threaded onto the lead screw. The sliding seat is fixedly connected to the second adjustment mechanism. A limiting rod that can limit the sliding seat is fixedly mounted on the base.

3. The grinding device for mechanical manufacturing design according to claim 1, characterized in that: The grinding mechanism includes a grinding motor and a grinding head. The grinding motor is fixedly mounted on an adjusting base, and the output shaft of the grinding motor is fixedly mounted with a grinding head that can grind parts.

4. The grinding device for mechanical manufacturing design according to claim 1, characterized in that: The drive assembly includes a drive frame fixedly connected to the mounting base and a worm gear rotatably mounted on the drive frame. A handwheel is fixedly mounted on the worm gear, and a worm wheel meshing with the worm gear is fixedly mounted on the adjusting shaft.

5. A grinding device for mechanical manufacturing design according to claim 1, characterized in that: The limiting assembly includes a limiting frame, a T-shaped threaded rod, a straight toothed plate, and a round rod. The limiting frame is fixedly connected to the mounting shaft. The T-shaped threaded rod is threadedly connected to the middle of the limiting frame through a threaded hole. A straight toothed plate that meshes with the limiting gear is rotatably mounted on the T-shaped threaded rod. Round rods are fixedly connected to the symmetrical sides of the straight toothed plate. The end of the round rod away from the straight toothed plate passes through the limiting frame and extends to the outside of the limiting frame.

6. The grinding device for mechanical manufacturing design according to claim 5, characterized in that: A mounting cylinder is fixedly connected to the middle of the straight tooth plate, and the T-shaped end of the T-shaped threaded rod is rotatably connected inside the mounting cylinder. A retaining ring is fixedly connected inside the mounting cylinder to prevent the T-shaped end of the T-shaped threaded rod from slipping out.

7. A grinding device for mechanical manufacturing design according to claim 5, characterized in that: The limiting frame is threadedly connected to a limiting screw through a threaded hole, and one of the round rods has a limiting hole into which the limiting screw can be inserted.

8. A grinding device for mechanical manufacturing design according to claim 1, characterized in that: The base has symmetrical rotating shafts mounted on both sides. Each of the two rotating shafts is fixedly connected to an electric push rod at one end that is close to the other. Each electric push rod is fixedly connected to a clamping plate at its extended end. A driven gear is fixedly mounted on one of the rotating shafts. A drive motor is fixedly mounted on the base. The output shaft of the drive motor is fixedly connected to a driving gear that meshes with the driven gear.

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