Double-disc numerical control grinding machine
By designing a dual-grinding-wheel CNC grinding machine, the problem of multiple clamping operations required by existing grinding machines is solved. This enables simultaneous grinding of the inner and outer walls of cylindrical parts, improving processing efficiency and accuracy, and simplifying the debugging process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINGBO HERLIOS ELECTRICAL & MECHANICAL EQUIP CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-24
AI Technical Summary
Existing grinding machines require multiple clamping operations when grinding the inner and outer walls of cylindrical parts, resulting in low processing efficiency and potential cumulative errors due to inconsistent positioning datums, affecting key accuracy indicators such as coaxiality and roundness of the parts.
A dual-grinding-wheel CNC grinding machine was designed. The first grinding mechanism and the second grinding mechanism grind the inner and outer walls of cylindrical parts simultaneously. The position adjustment is achieved through structures such as sliding grooves, sliding columns, electric push rods and limit rings to adapt to cylindrical parts of different sizes. The debugging process is simplified by combining bearings and indicator blocks.
This technology enables simultaneous grinding of the inner and outer walls of cylindrical parts, reducing operational steps, improving processing efficiency, ensuring accuracy, and simplifying the debugging process.
Smart Images
Figure CN224544007U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of grinding machine technology, specifically relating to a dual-grinding-wheel CNC grinding machine. Background Technology
[0002] Grinding machines are key pieces of equipment in the machinery manufacturing industry used for high-precision grinding of workpiece surfaces. They achieve cutting processing of the workpiece surface through the high-speed rotation of the grinding wheel (such as a grinding wheel or grinding disc) and the relative motion with the workpiece, thereby obtaining the required dimensional accuracy, shape accuracy, and surface roughness. Grinding machines are widely used in industries such as aerospace, automotive manufacturing, precision instruments, and bearing processing. They can be used to process various surfaces, including planes, cylindrical surfaces, conical surfaces, and internal and external threads, and are essential processing equipment for ensuring the performance and reliability of mechanical parts.
[0003] In actual production, grinding the inner and outer walls of cylindrical parts (such as bearing sleeves, hydraulic cylinder barrels, and precision pipe fittings) is a common machining requirement. However, existing grinding machines have certain limitations when processing such parts: most grinding machines use a single grinding wheel structure, and can only complete one grinding operation, either the inner or outer wall, in a single operation. During the machining process, the part must first be clamped and its inner wall ground, then disassembled and re-clamped before grinding the outer wall. Multiple clamping not only increases the number of operation steps and auxiliary time, significantly reducing machining efficiency, but may also lead to cumulative errors due to inconsistent positioning datums in each clamping, affecting key accuracy indicators such as coaxiality and roundness of the part. Utility Model Content
[0004] The purpose of this utility model is to provide a dual-grinding-wheel CNC grinding machine, which solves the technical problems of existing grinding machines that use a single grinding wheel structure, which require multiple clamping of cylindrical parts when grinding the inner and outer walls of cylindrical parts, resulting in low grinding efficiency. Furthermore, the inconsistent positioning references for each clamping may cause cumulative errors, affecting the coaxiality, roundness and other key accuracy indicators of the parts.
[0005] The specific technical solution adopted by this utility model is as follows:
[0006] A dual-grinding-wheel CNC grinding machine includes a support table, a housing on the upper surface of the support table, a groove at the bottom of the housing, a sliding column slidably connected to the inner wall of the groove, a first electric push rod fixedly connected to the upper surface of the sliding column and the left side of the housing, a circular hole on the right side of the housing, a drive mechanism fixedly connected to the inner wall of the circular hole and the inner wall of the housing, a first rectangular tube fixedly connected to the upper surface of the support table, a second rectangular tube slidably connected to the inner wall of the first rectangular tube, and a second electric push rod fixedly connected to the bottom of the second rectangular tube and the inner wall of the first rectangular tube. A push rod is provided. A first grinding mechanism is fixedly connected to the inner wall of the second rectangular tube. A first rectangular hole is provided on both the front and rear sides of the first rectangular tube. A second rectangular hole is provided on both the front and rear sides of the second rectangular tube. A square column is slidably connected to the inner wall of the first rectangular hole and the inner wall of the second rectangular hole. A second grinding mechanism is fixedly connected to the bottom of the square column. A third electric push rod is fixedly connected to the upper surface of the second grinding mechanism and the inner wall of the second rectangular tube. A limit ring is fitted on both the front and rear sides of the first rectangular tube. The inner wall of the limit ring is fixedly connected to the surface of the square column.
[0007] The present invention is further configured such that the driving mechanism includes a first motor base, a first drive motor, a first rotating shaft, a first bearing, and a four-jaw chuck. The surface of the first motor base is fixedly connected to the inner wall of the housing, the upper surface of the first motor base is fixedly connected to the bottom of the first drive motor, the output end of the first drive motor is fixedly connected to the left end of the first rotating shaft, the right end of the first rotating shaft is fixedly connected to the left side of the four-jaw chuck, the inner ring of the first bearing is fixedly connected to the surface of the first rotating shaft, and the outer ring of the first bearing is fixedly connected to the inner wall of the circular hole.
[0008] The present invention is further configured such that the first grinding mechanism includes a second motor base, a second drive motor, a second rotating shaft, a first mounting base, and a first grinding disc. The bottom of the second motor base is fixedly connected to the inner wall of the second rectangular tube, the upper surface of the second motor base is fixedly connected to the bottom of the second drive motor, the output end of the second drive motor is fixedly connected to the right end of the second rotating shaft, the left end of the second rotating shaft is fixedly connected to the right side of the first mounting base, and the left side of the first mounting base is fixedly connected to the right side of the first grinding disc.
[0009] The present invention is further configured such that the second grinding mechanism includes a third motor base, a third drive motor, a third rotating shaft, a second mounting base, and a second grinding disc. The bottom of the square column and the telescopic end of the third electric push rod are both fixedly connected to the upper surface of the third motor base. The bottom of the third motor base is fixedly connected to the upper surface of the third drive motor. The output end of the third drive motor is fixedly connected to the right end of the third rotating shaft. The left end of the third rotating shaft is fixedly connected to the right side of the second mounting base. The left side of the second mounting base is fixedly connected to the right side of the second grinding disc.
[0010] The present invention is further configured such that a second bearing is fixedly connected to the surface of the second rotating shaft, a first rectangular plate is fixedly connected to the surface of the second bearing, a first indicator block is fixedly connected to the right side of the first rectangular plate, the back of the first indicator block is in contact with the front of the first rectangular tube, a scale is fixedly connected to the front of the first rectangular tube, and the first indicator block is located to the left of the scale.
[0011] The present invention is further configured such that a third bearing is fixedly connected to the surface of the third rotating shaft, a second rectangular plate is fixedly connected to the surface of the third bearing, a second indicator block is fixedly connected to the right side of the second rectangular plate, and the back of the second indicator block is in contact with the front of the first rectangular tube.
[0012] The technical effects achieved by this utility model are as follows:
[0013] This utility model's dual-grinding-wheel CNC grinding machine, by setting up a first grinding mechanism and a second grinding mechanism, enables the grinding machine to simultaneously grind the inner and outer walls of cylindrical parts. This eliminates the need for multiple clamping operations, reducing operational steps and improving processing efficiency. Furthermore, through the coordination of the first rectangular cylinder, the second rectangular cylinder, the second electric push rod, the first rectangular hole, the second rectangular hole, the square column, the third electric push rod, and the limiting ring, the positions of the first and second grinding mechanisms can be flexibly adjusted according to the different sizes of cylindrical parts, giving the grinding machine the ability to grind and process cylindrical parts of various specifications.
[0014] The dual-grinding wheel CNC grinding machine of this utility model, through the coordinated cooperation of the second bearing, the first rectangular plate, the first indicator block, the scale, the third bearing, the second rectangular plate and the second indicator block, allows the operator to directly determine whether the first grinding mechanism and the second grinding mechanism have reached the designated position. In this way, when judging whether the first grinding mechanism and the second grinding mechanism have reached the position after movement, there is no need to use additional measuring tools, thus simplifying the debugging process of the grinding machine. Attached Figure Description
[0015] Figure 1 This is a front view of the structure of this utility model;
[0016] Figure 2 yes Figure 1 Enlarged view of point A in the middle;
[0017] Figure 3 This is a top view of the structure of this utility model;
[0018] Figure 4 yes Figure 3 Sectional view at point BB;
[0019] Figure 5 yes Figure 4 Enlarged view at point C;
[0020] Figure 6 This is a right view of the box body in this utility model;
[0021] Figure 7 This is a front view of the drive mechanism in this utility model;
[0022] Figure 8 This is a front view of the first rectangular tube in this utility model;
[0023] Figure 9 This is a front view of the second rectangular tube in this utility model;
[0024] Figure 10 This is a right view of the first rectangular tube in this utility model;
[0025] Figure 11 This is a front view of the first grinding mechanism in this utility model;
[0026] Figure 12 This is a front view of the second grinding mechanism in this utility model.
[0027] The attached diagram lists the components represented by each number as follows:
[0028] 1. Support platform; 2. Housing; 3. Slide groove; 4. Sliding column; 5. First electric push rod; 6. Circular hole; 7. Drive mechanism; 71. First motor base; 72. First drive motor; 73. First rotating shaft; 74. First bearing; 75. Four-jaw chuck; 8. First rectangular cylinder; 9. Second rectangular cylinder; 10. Second electric push rod; 11. First grinding mechanism; 111. Second motor base; 112. Second drive motor; 113. Second rotating shaft; 114. First mounting base; 115. 12. First grinding disc; 13. First rectangular hole; 14. Second rectangular hole; 15. Square column; 16. Second grinding mechanism; 17. Third motor base; 18. Third drive motor; 19. Third rotating shaft; 10. Second mounting base; 11. Second grinding disc; 12. Third electric push rod; 13. Limiting ring; 14. Second bearing; 15. First rectangular plate; 26. First indicator block; 27. Scale; 28. Third bearing; 29. Second rectangular plate; 20. Second indicator block. Detailed Implementation
[0029] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.
[0030] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.
[0031] like Figures 1 to 12 As shown, a dual-grinding-wheel CNC grinding machine includes a support table 1, a housing 2 on the upper surface of the support table 1, a sliding groove 3 at the bottom of the housing 2, a sliding column 4 slidably connected to the inner wall of the sliding groove 3, a first electric push rod 5 fixedly connected to the upper surface of the sliding column 4 and the left side of the housing 2, a circular hole 6 on the right side of the housing 2, a drive mechanism 7 fixedly connected to the inner wall of the circular hole 6 and the inner wall of the housing 2, a first rectangular tube 8 fixedly connected to the upper surface of the support table 1, a second rectangular tube 9 slidably connected to the inner wall of the first rectangular tube 8, and a second electric push rod 10 fixedly connected to the bottom of the second rectangular tube 9 and the inner wall of the first rectangular tube 8. The inner wall of the second rectangular tube 9 is fixedly connected to the first grinding mechanism 11. The front and rear sides of the first rectangular tube 8 are provided with first rectangular holes 12. The front and rear sides of the second rectangular tube 9 are provided with second rectangular holes 13. The inner walls of the first rectangular holes 12 and the inner walls of the second rectangular holes 13 are slidably connected to square columns 14. The bottom of the square columns 14 is fixedly connected to the second grinding mechanism 15. The upper surface of the second grinding mechanism 15 and the inner wall of the second rectangular tube 9 are fixedly connected to the third electric push rod 16. The front and rear sides of the first rectangular tube 8 are fitted with limit rings 17. The inner wall of the limit rings 17 is fixedly connected to the surface of the square columns 14.
[0032] The drive mechanism 7 includes a first motor base 71, a first drive motor 72, a first rotating shaft 73, a first bearing 74, and a four-jaw chuck 75. The surface of the first motor base 71 is fixedly connected to the inner wall of the housing 2. The upper surface of the first motor base 71 is fixedly connected to the bottom of the first drive motor 72. The output end of the first drive motor 72 is fixedly connected to the left end of the first rotating shaft 73. The right end of the first rotating shaft 73 is fixedly connected to the left side of the four-jaw chuck 75. The inner ring of the first bearing 74 is fixedly connected to the surface of the first rotating shaft 73. The outer ring of the first bearing 74 is fixedly connected to the inner wall of the circular hole 6.
[0033] The first grinding mechanism 11 includes a second motor base 111, a second drive motor 112, a second rotating shaft 113, a first mounting base 114, and a first grinding disc 115. The bottom of the second motor base 111 is fixedly connected to the inner wall of the second rectangular tube 9, the upper surface of the second motor base 111 is fixedly connected to the bottom of the second drive motor 112, the output end of the second drive motor 112 is fixedly connected to the right end of the second rotating shaft 113, the left end of the second rotating shaft 113 is fixedly connected to the right side of the first mounting base 114, and the left side of the first mounting base 114 is fixedly connected to the right side of the first grinding disc 115.
[0034] The second grinding mechanism 15 includes a third motor base 151, a third drive motor 152, a third rotating shaft 153, a second mounting base 154, and a second grinding disc 155. The bottom of the square column 14 and the telescopic end of the third electric push rod 16 are fixedly connected to the upper surface of the third motor base 151. The bottom of the third motor base 151 is fixedly connected to the upper surface of the third drive motor 152. The output end of the third drive motor 152 is fixedly connected to the right end of the third rotating shaft 153. The left end of the third rotating shaft 153 is fixedly connected to the right side of the second mounting base 154. The left side of the second mounting base 154 is fixedly connected to the right side of the second grinding disc 155.
[0035] It should be noted that the cooperation of the slide groove 3 and the slide column 4 allows the box body 2 to move only left and right. The first electric push rod 5 controls the left and right movement of the box body 2. The four-jaw chuck 75 can connect the cylindrical part to the first rotating shaft 73 and enable the first drive motor 72 to drive the cylindrical part to rotate.
[0036] The second rectangular cylinder 9 can only move up or down within the first rectangular cylinder 8 through the cooperation of the first rectangular hole 12, the second rectangular hole 13, the square post 14, and the limiting ring 17. The second rectangular cylinder 9 can move up or down through the cooperation of the first rectangular hole 12, the square post 14, and the limiting ring 17. The second grinding mechanism 15 can only move up or down through the cooperation of the first rectangular hole 12, the square post 14, and the limiting ring 17. The second grinding mechanism 15 can be controlled by the third electric push rod 16. By changing the positions of the first grinding mechanism 11 and the second grinding mechanism 15, the grinding machine can grind cylindrical parts of different sizes.
[0037] When the second drive motor 112 drives the first grinding disc 115 to rotate, the inner wall of the cylindrical part can be ground through the first grinding disc 115. When the third drive motor 152 drives the second grinding disc 155 to rotate, the surface of the cylindrical part can be ground through the second grinding disc 155.
[0038] like Figures 1 to 10As shown, a second bearing 18 is fixedly connected to the surface of the second rotating shaft 113, a first rectangular plate 19 is fixedly connected to the surface of the second bearing 18, a first indicator block 20 is fixedly connected to the right side of the first rectangular plate 19, the back of the first indicator block 20 is in contact with the front of the first rectangular tube 8, a scale 21 is fixedly connected to the front of the first rectangular tube 8, and the first indicator block 20 is located to the left of the scale 21.
[0039] A third bearing 22 is fixedly connected to the surface of the third rotating shaft 153. A second rectangular plate 23 is fixedly connected to the surface of the third bearing 22. A second indicator block 24 is fixedly connected to the right side of the second rectangular plate 23. The back of the second indicator block 24 is in contact with the front of the first rectangular tube 8.
[0040] It should be noted that through the coordinated operation of the second bearing 18, the first rectangular plate 19, the first indicator block 20, the scale 21, the third bearing 22, the second rectangular plate 23, and the second indicator block 24, the operator can directly determine whether the first grinding mechanism 11 and the second grinding mechanism 15 have reached the designated position. In this way, when determining whether the first grinding mechanism 11 and the second grinding mechanism 15 have reached their positions after movement, there is no need to use additional measuring tools, thereby simplifying the debugging process of the grinding machine.
[0041] The working principle of this utility model is as follows: First, the cylindrical part to be ground is fixed on the four-jaw chuck 75. Then, the positions of the first grinding mechanism 11 and the second grinding mechanism 15 are adjusted according to the size of the cylindrical part. When adjusting the position, the first grinding mechanism 11 and the second grinding mechanism 15 can be moved up or down by the second electric push rod 10, and the second grinding mechanism 15 can be moved up or down by the third electric push rod 16.
[0042] After the first grinding mechanism 11 and the second grinding mechanism 15 are both adjusted to the appropriate positions, the first grinding disc 115 is driven to rotate by the second drive motor 112, and the second grinding disc 155 is driven to rotate by the third drive motor 152. Then, the cylindrical part is driven to rotate by the first drive motor 72, and the cylindrical part is moved to the right by the first electric push rod 5.
[0043] When the inner wall of the cylindrical part comes into contact with the rotating first grinding disc 115, the inner wall of the cylindrical part can be ground by the first grinding disc 115. When the surface of the cylindrical part comes into contact with the rotating second grinding disc 155, the surface of the cylindrical part can be ground by the second grinding disc 155.
[0044] After the inner and outer walls of the cylindrical part are polished, the first electric push rod 5 is used to return the housing 2 to the initial position, and the first drive motor 72, the second drive motor 112 and the third drive motor 152 are turned off. After the cylindrical part stops rotating, the cylindrical part is removed from the four-jaw chuck 75.
[0045] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.
Claims
1. A dual-grinding-wheel CNC grinding machine, characterized in that: The system includes a support platform (1), a box (2) on its upper surface, a groove (3) at the bottom of the box (2), a sliding column (4) slidably connected to the inner wall of the groove (3), a first electric push rod (5) fixedly connected to the upper surface of the sliding column (4) and the left side of the box (2), a circular hole (6) on the right side of the box (2), a drive mechanism (7) fixedly connected to the inner wall of the circular hole (6) and the inner wall of the box (2), a first rectangular tube (8) fixedly connected to the upper surface of the support platform (1), a second rectangular tube (9) slidably connected to the inner wall of the first rectangular tube (8), and a second electric push rod (10) fixedly connected to the bottom of the second rectangular tube (9) and the inner wall of the first rectangular tube (8). The inner wall of the second rectangular tube (9) is fixedly connected to the first grinding mechanism (11). The first rectangular tube (8) has a first rectangular hole (12) on both the front and rear sides. The second rectangular tube (9) has a second rectangular hole (13) on both the front and rear sides. The inner wall of the first rectangular hole (12) and the inner wall of the second rectangular hole (13) are slidably connected to a square column (14). The bottom of the square column (14) is fixedly connected to the second grinding mechanism (15). The upper surface of the second grinding mechanism (15) and the inner wall of the second rectangular tube (9) are fixedly connected to the third electric push rod (16). The front and rear sides of the first rectangular tube (8) are fitted with a limit ring (17). The inner wall of the limit ring (17) is fixedly connected to the surface of the square column (14).
2. The dual-grinding-wheel CNC grinding machine according to claim 1, characterized in that: The drive mechanism (7) includes a first motor base (71), a first drive motor (72), a first rotating shaft (73), a first bearing (74), and a four-jaw chuck (75). The surface of the first motor base (71) is fixedly connected to the inner wall of the housing (2). The upper surface of the first motor base (71) is fixedly connected to the bottom of the first drive motor (72). The output end of the first drive motor (72) is fixedly connected to the left end of the first rotating shaft (73). The right end of the first rotating shaft (73) is fixedly connected to the left side of the four-jaw chuck (75). The inner ring of the first bearing (74) is fixedly connected to the surface of the first rotating shaft (73). The outer ring of the first bearing (74) is fixedly connected to the inner wall of the circular hole (6).
3. The dual-grinding-wheel CNC grinding machine according to claim 1, characterized in that: The first grinding mechanism (11) includes a second motor base (111), a second drive motor (112), a second rotating shaft (113), a first mounting base (114), and a first grinding disc (115). The bottom of the second motor base (111) is fixedly connected to the inner wall of the second rectangular tube (9). The upper surface of the second motor base (111) is fixedly connected to the bottom of the second drive motor (112). The output end of the second drive motor (112) is fixedly connected to the right end of the second rotating shaft (113). The left end of the second rotating shaft (113) is fixedly connected to the right side of the first mounting base (114). The left side of the first mounting base (114) is fixedly connected to the right side of the first grinding disc (115).
4. The dual-grinding-wheel CNC grinding machine according to claim 1, characterized in that: The second grinding mechanism (15) includes a third motor base (151), a third drive motor (152), a third rotating shaft (153), a second mounting base (154), and a second grinding disc (155). The bottom of the square column (14) and the telescopic end of the third electric push rod (16) are fixedly connected to the upper surface of the third motor base (151). The bottom of the third motor base (151) is fixedly connected to the upper surface of the third drive motor (152). The output end of the third drive motor (152) is fixedly connected to the right end of the third rotating shaft (153). The left end of the third rotating shaft (153) is fixedly connected to the right side of the second mounting base (154). The left side of the second mounting base (154) is fixedly connected to the right side of the second grinding disc (155).
5. The dual-grinding-wheel CNC grinding machine according to claim 3, characterized in that: A second bearing (18) is fixedly connected to the surface of the second rotating shaft (113). A first rectangular plate (19) is fixedly connected to the surface of the second bearing (18). A first indicator block (20) is fixedly connected to the right side of the first rectangular plate (19). The back of the first indicator block (20) is in contact with the front of the first rectangular tube (8). A scale (21) is fixedly connected to the front of the first rectangular tube (8). The first indicator block (20) is located to the left of the scale (21).
6. The dual-grinding-wheel CNC grinding machine according to claim 4, characterized in that: A third bearing (22) is fixedly connected to the surface of the third rotating shaft (153), and a second rectangular plate (23) is fixedly connected to the surface of the third bearing (22). A second indicator block (24) is fixedly connected to the right side of the second rectangular plate (23), and the back of the second indicator block (24) is in contact with the front of the first rectangular tube (8).