Double-sided grinding machine

Abstract

The utility model relates to the technical field of grinding machines, and discloses a double-face grinding machine which comprises a rack, a lower grinding disc and an upper grinding disc. A groove is formed in the top surface of the rack, a lower rotating shaft penetrates through and is rotationally mounted at the bottom of the groove, and the lower grinding disc is mounted at the top of the lower rotating shaft; an electric push rod is installed at the top of the rack, the movable end of the electric push rod is connected with a supporting plate, one end of the supporting plate penetrates through and rotationally provided with an upper rotating shaft, and the upper grinding disc is installed at the bottom of the upper rotating shaft. A transmission shaft penetrates through and is rotationally mounted on one side of the electric push rod on the top surface of the rack, a motor for driving the transmission shaft to rotate is mounted in the rack, and the transmission shaft is in transmission connection with the lower rotating shaft and the upper rotating shaft through a lower planetary gear set and an upper planetary gear set respectively. The number of parts such as a motor and a speed reducer is reduced through a single driving system, the manufacturing cost is reduced by about 40%, the device is suitable for small and medium-sized enterprises with limited budget, strict synchronization of rotating speeds of upper and lower discs is ensured through mechanical linkage, and motion deviation caused by electrical delay is avoided.

Description

Technical Field

[0001] This utility model relates to the field of grinding machine technology, specifically a double-sided grinding machine. Background Technology

[0002] A grinding machine is a grinding machine that uses abrasive-coated or embedded grinding tools to grind the surface of a workpiece. The main types of grinding machines include disc grinding machines, spindle grinding machines, and various special-purpose grinding machines. Among disc grinding machines, the double-disc grinding machine is the most common. In a double-disc grinding machine, multiple workpieces are simultaneously placed in a carrier disc located between the upper and lower grinding discs. The carrier disc and the workpieces are driven by an eccentric or planetary mechanism to move in a parallel plane.

[0003] Most existing double-sided grinding machines use dual motors to drive the upper and lower grinding discs separately. However, dual motors require independent frequency converters, encoders and transmission systems, which increases the equipment purchase cost by 30% to 50%. In addition, the synchronization of the upper and lower disc speeds is poor, which increases the difficulty of debugging the control system. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the above-mentioned technical defects and provide a double-sided grinding machine.

[0005] To solve the above problems, the technical solution of this utility model is: a double-sided grinding machine, including a frame, on which a lower grinding disc and an upper grinding disc are mounted;

[0006] The top surface of the frame has a groove, and a lower rotating shaft is rotatably mounted through the bottom of the groove. The lower grinding disc is mounted on the top of the lower rotating shaft via a lower mounting base. An electric push rod is mounted on one side of the groove on the top of the frame. The movable end of the electric push rod is connected to a support plate. One end of the support plate is rotatably mounted through the lower rotating shaft above it. The upper grinding disc is mounted on the bottom of the upper rotating shaft via an upper mounting base.

[0007] A drive shaft is rotatably mounted through one side of the electric push rod on the top surface of the frame. A motor for driving the drive shaft is installed inside the frame. The drive shaft is connected to the lower rotating shaft and the upper rotating shaft through the lower planetary gear set and the upper planetary gear set, respectively. An upper gear box and a lower gear box are respectively provided on the outer side of the lower planetary gear set and the upper planetary gear set.

[0008] Furthermore, a support ring is installed at the top of the groove, and the support ring has several through holes.

[0009] Furthermore, a positioning seat is provided at the bottom of the groove, and the lower mounting seat is rotatably mounted on the top of the positioning seat.

[0010] Furthermore, a protective cover is installed on the bottom of the support plate outside the upper grinding disc.

[0011] Furthermore, a limiting post is fixedly connected to the top of the frame, penetrating the support plate, and a limiting cylinder sleeved on the outside of the limiting post is fixedly connected to the top of the support plate.

[0012] Furthermore, the lower planetary gear set and the upper planetary gear set have the same transmission ratio, and the number of gears differs by one.

[0013] Furthermore, a sleeve is slidably fitted on the upper part of the drive shaft, and two limiting blocks are symmetrically fixed to the inner side of the sleeve. Two sliding grooves that are adapted to the limiting blocks are symmetrically opened on the upper side of the drive shaft. The sleeve is rotatably mounted on the inner bottom surface of the upper gearbox, and the gear at one end of the upper planetary gear set is fixedly mounted on the outer side of the sleeve, the gear at the other end is fixedly mounted on the outer side of the upper rotating shaft, and the gear in the middle is rotatably mounted on the inner bottom surface of the upper gearbox through the upper positioning column.

[0014] Furthermore, the gear at one end of the lower planetary gear set is fixedly mounted on the outside of the transmission shaft, the gear at the other end is fixedly mounted on the outside of the lower rotating shaft, and the gear in the middle is rotatably mounted on the bottom surface of the lower gearbox via the lower positioning column.

[0015] The advantages of this invention compared to existing technologies are as follows: This invention reduces the number of components such as motors and reducers through a single drive system, thereby reducing manufacturing costs by about 40%, making it suitable for small and medium-sized enterprises with limited budgets. Through mechanical linkage, it ensures that the speeds of the upper and lower plates are strictly synchronized, avoiding motion deviations caused by electrical delays. Attached Figure Description

[0016] Figure 1 This is a three-dimensional representation of the present invention. Figure 1 .

[0017] Figure 2 This is a three-dimensional representation of the present invention. Figure 2 .

[0018] Figure 3 This is a cross-sectional view of the present invention.

[0019] Figure 4 This is a utility model Figure 3 A magnified view of a portion of the image.

[0020] As shown in the figure: 1. Frame; 2. Lower grinding disc; 3. Upper grinding disc; 4. Lower rotating shaft; 5. Lower mounting base; 6. Electric actuator; 7. Support plate; 8. Upper rotating shaft; 9. Upper mounting base; 10. Drive shaft; 11. Motor; 12. Lower gearbox; 13. Upper gearbox; 14. Support ring; 15. Positioning seat; 16. Protective cover; 17. Limiting post; 18. Limiting cylinder; 19. Sleeve; 20. Limiting block. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 4 As shown, a double-sided grinding machine includes a frame 1, on which a lower grinding disc 2 and an upper grinding disc 3 are mounted. A groove is formed on the top surface of the frame 1, through which a lower rotating shaft 4 is rotatably mounted. The lower grinding disc 2 is mounted on top of the lower rotating shaft 4 via a lower mounting seat 5. An electric push rod 6 is mounted on one side of the groove on the top of the frame 1. The movable end of the electric push rod 6 is connected to a support plate 7. One end of the support plate 7 passes through the lower rotating shaft 4 and is rotatably mounted on an upper rotating shaft 8. The upper grinding disc 3 is mounted on the bottom of the upper rotating shaft 8 via an upper mounting seat 9. A support ring 14 is mounted at the top of the groove, with several through holes. A positioning seat 15 is provided at the bottom of the groove, and the lower mounting seat 5 is rotatably mounted on top of the positioning seat 15. A protective cover 16 is mounted on the bottom of the support plate 7 outside the upper grinding disc 3.

[0023] The height of the support plate 7 can be adjusted by extending and retracting the electric actuator 6, thereby adjusting the distance between the upper grinding disc 3 and the lower grinding disc 2.

[0024] A drive shaft 10 is rotatably mounted through one side of the electric push rod 6 on the top surface of the frame 1. A motor 11 for driving the drive shaft 10 is installed inside the frame 1. The drive shaft 10 is connected to the lower rotating shaft 4 and the upper rotating shaft 8 respectively through a lower planetary gear set and an upper planetary gear set. A lower gearbox 12 and an upper gearbox 13 are respectively provided on the outer side of the lower planetary gear set and the upper planetary gear set. The transmission ratios of the lower planetary gear set and the upper planetary gear set are the same, and the number of gears differs by one.

[0025] A sleeve 19 is slidably sleeved on the upper part of the drive shaft 10. Two limiting blocks 20 are symmetrically fixed to the inner side of the sleeve 19. Two sliding grooves that are adapted to the limiting blocks 20 are symmetrically opened on the upper side of the drive shaft 10. The sleeve 19 is rotatably installed on the inner bottom of the upper gearbox 13. One end of the upper planetary gear set is fixedly installed on the outside of the sleeve 19, and the other end of the gear is fixedly installed on the outside of the upper rotating shaft 8. The middle gear is rotatably installed on the inner bottom surface of the upper gearbox 13 through the upper positioning post. One end of the lower planetary gear set is fixedly installed on the outside of the drive shaft, and the other end of the gear is fixedly installed on the outside of the lower rotating shaft 4. The middle gear is rotatably installed on the inner bottom surface of the lower gearbox 12 through the lower positioning post.

[0026] When the electric actuator 6 extends or retracts, the support plate 7 drives the upper gearbox 13 to move. Since the sleeve 19 is rotatably mounted on the inner bottom surface of the upper gearbox 13 and slidably sleeved on the outside of the transmission shaft 10, and the gear at one end of the upper planetary gear set is fixedly mounted on the outside of the sleeve 19, the upper gearbox 13 can drive the upper planetary gear set inside it to move without affecting the transmission to the upper rotating shaft 8.

[0027] The top of the frame 1 is fixedly connected to a limiting post 17 that penetrates the support plate 7, and the top of the support plate 7 is fixedly connected to a limiting cylinder 18 that is sleeved on the outside of the limiting post 17.

[0028] In practical use, this device is connected to a PLC controller. When the material tray moves the workpiece to the top of the lower grinding disc 2, the electric push rod 6 retracts, causing the upper grinding disc 3 to move downwards. The motor 11 is then activated, driving the transmission shaft 10 to rotate. The transmission shaft 10 then drives the lower rotating shaft 4 and the upper rotating shaft 8 to rotate, thereby achieving the rotation of the lower grinding disc 2 and the upper grinding disc 3, completing the grinding of the workpiece's upper and lower surfaces. Because the number of gears in the lower planetary gear set and the upper planetary gear set differs by one, the lower grinding disc 2 and the upper grinding disc 3 can rotate in opposite directions. Synchronous driving of the lower grinding disc 2 and the upper grinding disc 3 can be achieved with a single motor 11. Driving the lower grinding disc 2 and the upper grinding disc 3 with the same transmission ratio using the upper and lower planetary gear sets reduces the number of components such as motors and reducers, lowering manufacturing costs by approximately 40%. This is suitable for small and medium-sized enterprises with limited budgets. Mechanical linkage ensures strict synchronization of the upper and lower disc speeds (error ≤ ±2 rpm), avoiding motion deviations caused by electrical delays.

[0029] The parts not disclosed in this utility model are all prior art, and their specific structures and working principles will not be described in detail.

[0030] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A double-sided grinding machine, comprising a frame (1), a lower grinding disc (2) and an upper grinding disc (3) are installed on the frame (1), characterized in that: a groove is formed on the top surface of the frame (1), a lower rotating shaft (4) is rotatably installed at the bottom of the groove, and the lower grinding disc (2) is installed on the top of the lower rotating shaft (4) through a lower mounting seat (5); an electric push rod (6) is installed on one side of the top of the frame (1) at the groove, a support plate (7) is connected to the movable end of the electric push rod (6), an upper rotating shaft (8) is rotatably installed at the upper side of the lower rotating shaft (4) at one end of the support plate (7), and the upper grinding disc (3) is installed on the bottom of the upper rotating shaft (8) through an upper mounting seat (9); a transmission shaft (10) is rotatably installed on the top surface of the frame (1) at one side of the electric push rod (6), a motor (11) is installed inside the frame (1) to drive the transmission shaft (10) to rotate, the transmission shaft (10) is connected to the lower rotating shaft (4) and the upper rotating shaft (8) through a lower planetary gear set and an upper planetary gear set respectively, and a lower gear box (12) and an upper gear box (13) are arranged on the outer sides of the lower planetary gear set and the upper planetary gear set respectively.

2. The double-sided polishing machine of claim 1, wherein: A support ring (14) is installed on the top of the groove, and a plurality of through holes are formed in the support ring (14).

3. The double-sided polishing machine of claim 1, wherein: A positioning seat (15) is arranged at the bottom of the groove, and the lower mounting seat (5) is rotatably installed on the top of the positioning seat (15).

4. The double-sided polishing machine of claim 1, wherein: A protective cover (16) is installed on the bottom of the support plate (7) at the outer side of the upper grinding disc (3).

5. The double-sided polishing machine of claim 1, wherein: A limiting column (17) is fixedly connected to the top of the frame (1) and penetrates the support plate (7), and a limiting cylinder (18) is fixedly connected to the top of the support plate (7) and surrounds the outer side of the limiting column (17).

6. The double-sided polishing machine of claim 1, wherein: The transmission ratios of the lower planetary gear set and the upper planetary gear set are the same, and the number of gears is different by one.

7. The double-sided polishing machine of claim 1, wherein: A sleeve (19) is slidably installed on the upper part of the transmission shaft (10), two limiting blocks (20) are symmetrically fixedly connected to the inner side of the sleeve (19), two sliding grooves that are adapted to the limiting blocks (20) are symmetrically formed on the upper part of the side surface of the transmission shaft (10), the sleeve (19) is rotatably installed on the inner bottom surface of the upper gear box (13), and the gears at one end of the upper planetary gear set are fixedly installed on the outer side of the sleeve (19).

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