High-speed brushless mechanical part deep hole inner wall grinding machine
By using an electric slide and a reciprocating screw to drive the grinding wheel, combined with a wall scraping assembly and a support assembly, the problems of difficult removal of impurities and poor rigidity on the inner wall of deep holes are solved, thus achieving high-quality grinding of the inner wall of deep holes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 福建艾特精密机械有限公司
- Filing Date
- 2026-03-25
- Publication Date
- 2026-05-12
AI Technical Summary
Existing deep hole grinding equipment makes it difficult to remove impurities when processing hollow stator shafts, resulting in scratches on the hole wall and precision defects. At the same time, the grinding rod has poor rigidity, resulting in uneven grinding of the inner wall of the deep hole.
An electric slide table drives the grinding wheel to rotate, which, combined with a reciprocating screw and a scraping assembly, scrapes away impurities through a film. A support assembly is used to increase the rigidity of the grinding rod and prevent vibration.
It effectively removes impurities, improves the quality and precision of grinding the inner wall of deep holes, ensures uniform grinding effect, and enhances the rigidity and vibration resistance of the grinding rod.
Smart Images
Figure CN122008016A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of deep hole grinding equipment technology, and in particular to a high-speed brushless mechanical parts deep hole inner wall grinding machine. Background Technology
[0002] In the field of high-speed brushless machinery, the hollow stator shaft is a core component, and the grinding quality of its deep hole inner wall directly affects the overall machine's operating accuracy and service life. Existing deep hole grinding equipment generally suffers from two major problems when machining hollow stator shafts. Firstly, impurities generated during grinding easily remain inside the deep hole. Due to the narrow space and enclosed structure of the deep hole, these impurities are difficult to remove smoothly. These residual impurities can further scratch the hole wall during grinding, damaging the inner wall's smoothness, and may even detach during subsequent use, affecting the transmission stability and safety of the high-speed brushless machinery. Secondly, grinding operations require a relatively long grinding rod to extend into the deep hole. Due to the length-to-diameter ratio, there are significant differences in rigidity and stress state between the front and rear ends of the grinding rod. The rear end, closer to the clamping end, has high rigidity and low vibration, resulting in stable grinding force and high material removal rate. The front end, farther from the clamping end, has weak rigidity and is prone to vibration and bending deformation, leading to insufficient grinding pressure and unstable trajectory. This results in uneven grinding of the deep hole inner wall, causing precision defects such as taper and vibration marks. Summary of the Invention
[0003] The main objective of this invention is to provide a high-speed brushless mechanical parts deep hole inner wall grinding machine, which can effectively solve the problems in the background art.
[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:
[0005] A high-speed brushless deep hole inner wall grinding machine for mechanical parts includes a worktable. An electric slide is fixedly mounted on the upper surface of the worktable. A clamp is fixedly mounted on one side of the upper surface of the electric slide, and a stator shaft is clamped inside the clamp. A motor is mounted on the other side of the upper surface of the electric slide. A reciprocating assembly is mounted on one side of the motor, and a wall scraping assembly is mounted on the reciprocating assembly. A support assembly is mounted on one side of the wall scraping assembly. A grinding wheel is mounted at one end of the reciprocating assembly. The reciprocating assembly includes components fixedly mounted on the motor. A grinding rod is located at one end of a rotating shaft. A reciprocating lead screw is fixedly mounted on the grinding rod. A tube rod is mounted on the outside of the grinding rod and the reciprocating lead screw. Four sets of movable ports are opened on the outside of the tube rod. Fixed rings are fixedly mounted at both ends of the movable ports on the outside of the tube rod. Four sets of switching strips are fixedly mounted at one end of the fixed ring. A movable ring is mounted on the outside of the reciprocating lead screw. Connecting seats are fixedly mounted on the outside of the movable ring at the positions corresponding to the four sets of movable ports. A movable shaft is movably mounted inside the upper side of the movable ring. A guide member is fixedly mounted at the lower end of the movable shaft.
[0006] Preferably, the scraping assembly includes four sets of round shafts rotatably disposed inside four sets of connecting seats. A fixing plate is fixedly disposed on the upper side of the round shaft. A connecting frame is sleeved on the outer side of the fixing plate. A film is fixedly disposed on the connecting frame. A square groove is opened on the inner side of the fixing plate. A spring is inserted into the inner side of the film. Round grooves are opened on both sides of the connecting seats corresponding to the two ends of the round shaft. A positioning groove is opened on the lower side of both sets of round grooves. A positioning piece is movably disposed inside the round shaft within the two sets of round grooves. A driving block is fixedly disposed on the upper side of both sets of positioning pieces. A fixing piece is fixedly disposed at both ends of the positioning piece. A return spring is fixedly disposed between the two sets of fixing pieces and the round shaft. A fixing strip is fixedly disposed at both ends of the positioning piece on the outer side of the round shaft.
[0007] Preferably, the support assembly includes a connecting ring fixedly disposed on the outside of the grinding rod at one end of the reciprocating lead screw. Three sets of fixing blocks are fixedly disposed on the outside of the connecting ring. A connecting shaft is movably disposed at the connection point between the three sets of fixing blocks and the connecting ring. A support foot is fixedly disposed on the outside of the three sets of connecting shafts. A counterweight sleeve is fixedly disposed at one end of each of the three sets of support feet. A wheel axle is rotatably disposed on the inner side of each of the three sets of counterweight sleeves. Two sets of fixing ears are fixedly disposed on each of the three sets of fixing blocks and the three sets of support feet. A double hook spring is hung between the fixing ears on the fixing blocks and the corresponding fixing ears on the support feet.
[0008] Preferably, the center of the stator shaft corresponds to the position of the grinding wheel, the motor is mounted on the movable part of the electric slide, the grinding rod passes through the inside of the tube and is fixedly connected to the grinding wheel, the tube is fixedly mounted on the motor housing, each set of the switching strips has two strips, one end of the switching strip is set as an arc surface, and the upper and lower two sets and the left and right two sets of the four sets of switching strips are slightly shorter.
[0009] Preferably, the movable ring moves inside the tube rod, the connecting seat slides inside the movable opening, and the guide is inserted into the groove of the reciprocating lead screw.
[0010] Preferably, the two sides of the circular shaft are located in the circular grooves on both sides, the fixing plate and the connecting frame are fixed together by nuts, and the upper and lower two groups and the left and right two groups of the four sets of films are staggered.
[0011] Preferably, the spring is fixedly connected to the inner side of the connecting seat, the positioning piece passes through the inside of the circular shaft in the circular groove to a set of positioning grooves, the two ends of the driving block are arc-shaped surfaces, and the driving block and the fixed strip correspond to the position of the switching strip.
[0012] Preferably, the connecting ring is located at one end of the grinding wheel, the support foot is arc-shaped, and the counterweight sleeve is open at the position corresponding to the wheel axle.
[0013] Compared with the prior art, the present invention has the following beneficial effects:
[0014] 1. The stator shaft is placed on the fixture for clamping and fixing. Then, the grinding wheel is rotated by the motor, and the electric slide table drives the motor to approach the stator shaft for grinding. When the motor is working, the grinding wheel is rotated by the grinding rod and the reciprocating screw. The rotating reciprocating screw drives the inserted guide to move. The movable ring connected to the outside of the guide through the movable shaft is set in the four movable holes by four sets of connecting seats, thereby driving the movable ring to move laterally and reciprocally. In conjunction with the motor driving the grinding wheel to move deeper into the stator shaft hole, the four sets of film on the outside are driven to reciprocate and scrape. In addition, the switching strip on the fixed ring can drive the four sets of film to rotate and switch. The lengths of the upper and lower sets of switching strips are different from those of the upper and lower sets of film, so that there is a certain time difference in rotation between the upper and lower sets of film and the lower sets of film, avoiding mutual interference.
[0015] 2. When the four sets of films are driven to move towards the motor side by the four sets of connecting seats, the films scrape against the hole wall to remove impurities generated during grinding, reducing the contact between the grinding wheel and the impurities after grinding, thus improving the grinding effect. When they move to the edge of the reciprocating screw, the drive block hits the switching bar on the motor side. The inclined surface of the switching bar first lifts the drive block up to a partial position, and the positioning plate leaves the inserted positioning slot. The fixing plate stretches the return spring and then pushes the fixing bar and the round shaft to rotate, causing the positioning plate, the upper connecting frame, and the films to rotate. This causes the four sets of films to rotate and reduce the radius of their unfolded circles. The positioning plate inserts into another positioning slot, positioning the four sets of films that have rotated. Then, driven by the reciprocating screw, they move towards the stator shaft. The rotated four sets of films avoid entering the hole and contacting the hole wall, pushing the impurities after grinding inward. By loosening the nuts that fix the fixing plate and the connecting frame, the size of the unfolded four sets of films can be adjusted to adapt to different hole widths.
[0016] 3. During the grinding process, the grinding rod drives the connecting ring to rotate, and the three sets of support feet connected to the outside of the connecting ring are thrown apart under the action of centrifugal force. At the same time, the double hook spring is stretched by the fixed ear, and the three sets of wheel axles contact the hole wall. The three sets of wheel axles satisfy the rollers that contact the inner wall, forming a stable support point for the grinding rod inside the deep hole. This effectively improves the rigidity and vibration resistance of the grinding rod and suppresses tail swing during high-speed rotation, thereby significantly improving the grinding quality of deep holes. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of a high-speed brushless mechanical parts deep hole inner wall grinding machine according to the present invention;
[0018] Figure 2 This is a schematic diagram of the grinding component structure of a high-speed brushless mechanical parts deep hole inner wall grinding machine according to the present invention;
[0019] Figure 3This is a schematic diagram of the inner structure of the tube rod of a high-speed brushless mechanical parts deep hole inner wall grinding machine according to the present invention;
[0020] Figure 4 This invention relates to a high-speed brushless mechanical parts deep hole inner wall grinding machine. Figure 3 Enlarged structural diagram of section A in the middle;
[0021] Figure 5 This is a schematic diagram of a partial cross-sectional view of the moving ring of a high-speed brushless mechanical component deep hole inner wall grinding machine according to the present invention;
[0022] Figure 6 This is a partial structural diagram of the reciprocating assembly and the wall scraping assembly of a high-speed brushless mechanical parts deep hole inner wall grinding machine according to the present invention.
[0023] Figure 7 This invention relates to a high-speed brushless mechanical parts deep hole inner wall grinding machine. Figure 6 Enlarged structural diagram of section B in the middle;
[0024] Figure 8 This is a schematic diagram of the support component structure of a high-speed brushless mechanical parts deep hole inner wall grinding machine according to the present invention.
[0025] In the diagram: 1. Worktable; 2. Electric slide; 3. Fixture; 4. Stator shaft; 5. Motor; 6. Reciprocating assembly; 61. Grinding rod; 62. Reciprocating lead screw; 63. Tube rod; 64. Movable port; 65. Fixed ring; 66. Switching bar; 67. Movable ring; 68. Connecting seat; 69. Movable shaft; 610. Guide component; 7. Scraping assembly; 71. Round shaft; 72. Fixed plate; 73. Connecting frame; 74. 75. Film; 76. Square groove; 77. Spring piece; 78. Round groove; 79. Positioning groove; 70. Positioning piece; 710. Drive block; 711. Fixing piece; 712. Return spring; 713. Fixing strip; 84. Support assembly; 85. Connecting ring; 86. Fixing block; 87. Connecting shaft; 88. Support foot; 89. Counterweight sleeve; 80. Wheel axle; 810. Fixing ear; 82. Double hook spring; 9. Grinding wheel. Detailed Implementation
[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0027] 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 as a relative relationship of orientation or position, and 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, and therefore should not be construed as a limitation of this invention.
[0028] Please see Figures 1-8 One embodiment of the present invention provides a high-speed brushless mechanical parts deep hole inner wall grinding machine, including a worktable 1, an electric slide 2 fixedly mounted on the upper end of the worktable 1, a clamp 3 fixedly mounted on one side of the upper side of the electric slide 2, a stator shaft 4 clamped inside the clamp 3, a motor 5 mounted on the other side of the upper side of the electric slide 2, a reciprocating assembly 6 mounted on one side of the motor 5, a wall scraping assembly 7 mounted on the reciprocating assembly 6, a support assembly 8 mounted on one side of the wall scraping assembly 7, a grinding wheel 9 mounted at one end of the reciprocating assembly 6, and the reciprocating assembly 6 including a grinding wheel 9 fixedly mounted on one end of the rotating shaft of the motor 5. A grinding rod 61 is provided, and a reciprocating lead screw 62 is fixedly installed on the grinding rod 61. A tube rod 63 is provided on the outside of the grinding rod 61 and the reciprocating lead screw 62. Four sets of movable ports 64 are opened on the outside of the tube rod 63. A fixing ring 65 is fixedly installed at both ends of the movable ports 64 on the outside of the tube rod 63. Four sets of switching strips 66 are fixedly installed at one end of the fixing ring 65. A movable ring 67 is provided on the outside of the reciprocating lead screw 62. A connecting seat 68 is fixedly installed on the outside of the movable ring 67 corresponding to the four sets of movable ports 64. A movable shaft 69 is movably installed inside the upper side of the movable ring 67. A guide member 610 is fixedly installed at the lower end of the movable shaft 69.
[0029] The center of the stator shaft 4 corresponds to the position of the grinding wheel 9. The motor 5 is mounted on the moving part of the electric slide table 2. The grinding rod 61 passes through the inside of the tube rod 63 and is fixedly connected to the grinding wheel 9. The tube rod 63 is fixedly set on the housing of the motor 5. There are two switching bars 66 in each set. One end of the switching bar 66 is set as an arc surface. Among the four sets of switching bars 66, the upper and lower two sets and the left and right two sets are slightly shorter. The movable ring 67 moves inside the tube rod 63. The connecting seat 68 slides inside the movable opening 64. The guide 610 is inserted into the groove of the reciprocating lead screw 62.
[0030] The stator shaft 4 is placed on the clamp 3 for clamping and fixing. Then, the grinding wheel 9 is rotated by the motor 5, and the electric slide 2 drives the motor 5 to approach the stator shaft 4 for grinding. When the motor 5 is working, the grinding wheel 9 is rotated by the grinding rod 61 and the reciprocating screw 62. The rotating reciprocating screw 62 drives the inserted guide 610 to move. The movable ring 67 connected to the outside of the guide 610 through the movable shaft 69 is set in the four movable openings 64 by four sets of connecting seats 68, thereby driving the movable ring 67 to move laterally and reciprocally. In conjunction with the motor 5 driving the grinding wheel 9 to move gradually deeper into the hole of the stator shaft 4, the four sets of film 74 set on the outside are driven to reciprocate and scrape. In addition, the switching strip 66 on the fixed ring 65 can drive the four sets of film 74 to rotate and switch. The lengths of the upper and lower sets of switching strips 66 are different from those of the upper and lower sets of film 74, so that there is a certain time difference in rotation between the upper and lower sets of film 74 and the lower sets of film 74, avoiding mutual interference.
[0031] The wall scraping assembly 7 includes four sets of round shafts 71 rotatably disposed inside four sets of connecting seats 68. A fixing plate 72 is fixedly disposed on the upper side of the round shaft 71. A connecting frame 73 is sleeved on the outer side of the fixing plate 72. A film 74 is fixedly disposed on the connecting frame 73. A square groove 75 is opened on the inner side of the fixing plate 72. A spring 76 is inserted into the inner side of the film 74. Round grooves 77 are opened on both sides of the connecting seat 68 corresponding to both ends of the round shaft 71. A positioning groove 78 is opened on the lower side of both sets of round grooves 77. A positioning piece 79 is movably disposed inside the round shaft 71 inside the two sets of round grooves 77. A driving block 710 is fixedly disposed on the upper side of both sets of positioning pieces 79. A fixing piece 711 is fixedly disposed at both ends of the positioning piece 79. A return spring 712 is fixedly disposed between the two sets of fixing pieces 711 and the round shaft 71. A fixing strip 713 is fixedly disposed at both ends of the positioning piece 79 on the outer side of the round shaft 71.
[0032] The two sides of the circular shaft 71 are located in the circular grooves 77 on both sides. The fixing plate 72 and the connecting frame 73 are fixed together by nuts. The upper and lower two sets of the four sets of film 74 are staggered with the left and right sets. The spring piece 76 is fixedly connected to the inside of the connecting seat 68. The positioning piece 79 passes through the inside of the circular shaft 71 in the circular groove 77 to a positioning groove 78. The two ends of the drive block 710 are arc surfaces. The drive block 710 and the fixing strip 713 correspond to the position of the switching strip 66.
[0033] When the four sets of connecting seats 68 drive the four sets of film 74 to move towards the motor 5, the film 74 adheres to the hole wall and scrapes away the impurities generated during polishing, reducing the contact between the polishing wheel 9 and the impurities after polishing, thus improving the polishing effect. When it moves to the edge of the reciprocating screw 62, the drive block 710 hits the switching bar 66 on the side of the motor 5. The inclined surface of the switching bar 66 first pushes the drive block 710 up to a partial position, the positioning plate 79 leaves the inserted positioning groove 78, the fixing plate 711 stretches the return spring 712, and then pushes the fixing bar 713 and the round shaft. Rotation 71 causes the positioning plate 79, the upper connecting frame 73, and the film 74 to rotate, thereby reducing the radius of the four sets of film 74 after they are unfolded. The positioning plate 79 is inserted into another set of positioning grooves 78. The four sets of film 74, after being positioned and rotated, move towards the stator shaft 4 driven by the reciprocating screw 62. The four sets of film 74, after being rotated, avoid entering the hole and contacting the hole wall, and push the impurities after grinding inward. By loosening the nuts that fix the fixing plate 72 and the connecting frame 73, the size of the unfolded four sets of film 74 can be adjusted to adapt to different hole widths.
[0034] The support assembly 8 includes a connecting ring 81 fixedly disposed on the outside of the grinding rod 61 at one end of the reciprocating lead screw 62. Three sets of fixing blocks 82 are fixedly disposed on the outside of the connecting ring 81. A connecting shaft 83 is movably disposed at the connection between the three sets of fixing blocks 82 and the connecting ring 81. Support feet 84 are fixedly disposed on the outside of the three sets of connecting shafts 83. A counterweight sleeve 85 is fixedly disposed at one end of the three sets of support feet 84. A wheel axle 86 is rotatably disposed on the inside of the three sets of counterweight sleeves 85. Two sets of fixing ears 87 are fixedly disposed on the three sets of fixing blocks 82 and the three sets of support feet 84. A double hook spring 88 is hung between the fixing ears 87 on the fixing blocks 82 and the support feet 84.
[0035] The connecting ring 81 is located at one end of the grinding wheel 9, the support foot 84 is arc-shaped, and the counterweight sleeve 85 is open at the position corresponding to the wheel axle 86.
[0036] During the grinding process, the grinding rod 61 drives the connecting ring 81 to rotate, and the three sets of support feet 84 connected to the outside of the connecting ring 81 are thrown apart under the action of centrifugal force. At the same time, the fixed ear 87 stretches the double hook spring 88, and the three sets of wheel axles 86 contact the hole wall. The three sets of wheel axles 86 satisfy the rollers that contact the inner wall, forming a stable support point for the grinding rod 61 inside the deep hole. This effectively improves the rigidity and vibration resistance of the grinding rod 61 and suppresses tailing during high-speed rotation, thereby significantly improving the grinding quality of deep holes.
[0037] Working principle: In use, the stator shaft 4 is placed on the clamp 3 for clamping and fixing. Then, the motor 5 drives the grinding wheel 9 to rotate, and the electric slide 2 drives the motor 5 to move closer to the stator shaft 4 for grinding. When the motor 5 is working, the grinding wheel 9 is driven to rotate by the grinding rod 61 and the reciprocating screw 62. The rotating reciprocating screw 62 drives the inserted guide member 610 to move. The movable ring 67 connected to the outside of the guide member 610 through the movable shaft 69 is set in the four movable openings 64 by four sets of connecting seats 68, thereby driving the movable ring 67 to perform left and right lateral reciprocating motion. This, together with the motor 5 driving the grinding wheel 9 to gradually move deeper into the hole of the stator shaft 4, drives the motor 5 to move the grinding wheel 9 deeper into the hole of the stator shaft 4. The four sets of film sheets 74 on the outer side are driven to reciprocate and scrape. Additionally, the switching strips 66 on the fixing ring 65 can drive the four sets of film sheets 74 to rotate and switch. The upper and lower sets of switching strips 66 have different lengths than the left and right sets, creating a certain time difference in rotation between the left and right sets of film sheets 74 and the upper and lower sets, preventing mutual interference. When the four sets of film sheets 74 are driven to move towards the motor 5 via the four connecting seats 68, the film sheets 74 scrape against the hole wall, removing impurities generated during grinding and reducing contact between the grinding wheel 9 and the ground impurities, thus improving the grinding effect. The drive block 710 impacts the motor when the film sheets 74 reach the edge of the reciprocating screw 62. The switching bar 66 on one side first lifts the drive block 710 to a partial position, and the positioning piece 79 leaves the inserted positioning groove 78. The fixing piece 711 stretches the return spring 712, and then pushes the fixing bar 713 and the round shaft 71 to rotate, which drives the positioning piece 79, the upper connecting frame 73, and the film 74 to rotate, thereby causing the four sets of film 74 to rotate and reduce the radius of the circle after unfolding. The positioning piece 79 inserts into another set of positioning grooves 78, positioning the four sets of film 74 after rotation. Then, driven by the reciprocating screw 62, they move towards the stator shaft 4. The four sets of film 74 after rotation avoid entering the hole and contacting the hole wall, and remove the impurities after grinding. The material pushes inward, and by loosening the nuts that fix the fixed plate 72 and the connecting frame 73, the size of the four sets of film 74 can be adjusted to adapt to different hole widths; secondly, during the grinding process, the grinding rod 61 drives the connecting ring 81 to rotate, and the three sets of support feet 84 connected to the outside of the connecting ring 81 are thrown apart under the action of centrifugal force. At the same time, the fixed ear 87 stretches the double hook spring 88, and the three sets of wheel axles 86 contact the hole wall. The three sets of wheel axles 86 satisfy the rollers that contact the inner wall, forming a stable support point for the grinding rod 61 inside the deep hole, effectively improving the rigidity and vibration resistance of the grinding rod 61 and suppressing the tail swing during high-speed rotation, thereby significantly improving the grinding quality of deep holes.
[0038] The mechanical and electrical connection methods and control of the worktable 1, electric slide 2, clamp 3, stator shaft 4, motor 5, film 74, and grinding wheel 9 in this invention are common knowledge in the field. Their working principles are well-known technologies, and the appropriate model is selected according to actual use, so they will not be explained in detail.
[0039] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A high-speed brushless mechanical parts deep hole inner wall grinding machine, comprising a worktable (1), characterized in that: An electric slide (2) is fixedly installed on the upper end of the worktable (1). A clamp (3) is fixedly installed on one side of the upper side of the electric slide (2). The clamp (3) holds the stator shaft (4) inside. A motor (5) is installed on the other side of the upper side of the electric slide (2). A reciprocating assembly (6) is installed on one side of the motor (5). A wall scraping assembly (7) is installed on the reciprocating assembly (6). A support assembly (8) is installed on one side of the wall scraping assembly (7) on the reciprocating assembly (6). A grinding wheel (9) is installed at one end of the reciprocating assembly (6). The reciprocating assembly (6) includes a grinding rod (61) fixedly installed at one end of the rotating shaft of the motor (5). A grinding wheel (9) is fixedly installed on the grinding rod (61). There is a reciprocating lead screw (62), and a tube rod (63) is provided on the outside of the grinding rod (61) and the reciprocating lead screw (62). Four sets of movable ports (64) are opened on the outside of the tube rod (63). Fixed rings (65) are fixedly provided at both ends of the movable ports (64) on the outside of the tube rod (63). Four sets of switching strips (66) are fixedly provided at one end of the fixed ring (65). A movable ring (67) is provided on the outside of the reciprocating lead screw (62). A connecting seat (68) is fixedly provided on the outside of the movable ring (67) corresponding to the four sets of movable ports (64). A movable shaft (69) is movably provided inside the upper side of the movable ring (67). A guide (610) is fixedly provided at the lower end of the movable shaft (69).
2. The high-speed brushless mechanical parts deep hole inner wall grinding machine according to claim 1, characterized in that: The scraping assembly (7) includes four sets of round shafts (71) rotatably disposed inside four sets of connecting seats (68). A fixing plate (72) is fixedly disposed on the upper side of the round shafts (71). A connecting frame (73) is sleeved on the outer side of the fixing plate (72). A film (74) is fixedly disposed on the connecting frame (73). A square groove (75) is opened on the inner side of the fixing plate (72). A spring (76) is inserted into the inner side of the film (74). Round grooves (77) are opened on both sides of the connecting seat (68) corresponding to both ends of the round shafts (71). The two sets of round shafts... A positioning groove (78) is provided on the lower side of the groove (77). A positioning piece (79) is movably arranged inside the two sets of circular grooves (77) of the circular shaft (71). A driving block (710) is fixedly arranged on the upper side of the two sets of positioning pieces (79). A fixing piece (711) is fixedly arranged at both ends of the positioning piece (79). A return spring (712) is fixedly arranged between the two sets of fixing pieces (711) and the circular shaft (71). A fixing strip (713) is fixedly arranged at both ends of the positioning piece (79) on the outer side of the circular shaft (71).
3. A high-speed brushless mechanical parts deep hole inner wall grinding machine according to claim 2, characterized in that: The support assembly (8) includes a connecting ring (81) fixedly disposed on the outside of the grinding rod (61) at one end of the reciprocating lead screw (62). Three sets of fixing blocks (82) are fixedly disposed on the outside of the connecting ring (81). A connecting shaft (83) is movably disposed at the connection between the three sets of fixing blocks (82) and the connecting ring (81). A support foot (84) is fixedly disposed on the outside of the three sets of connecting shafts (83). A counterweight sleeve (85) is fixedly disposed at one end of the three sets of support feet (84). A wheel axle (86) is rotatably disposed on the inside of the three sets of counterweight sleeves (85). Two sets of fixing ears (87) are fixedly disposed on the three sets of fixing blocks (82) and the three sets of support feet (84). A double hook spring (88) is hung between the fixing ears (87) on the fixing blocks (82) and the corresponding fixing ears (87) on the support feet (84).
4. The high-speed brushless mechanical parts deep hole inner wall grinding machine according to claim 1, characterized in that: The center of the stator shaft (4) corresponds to the position of the grinding wheel (9). The motor (5) is installed on the moving part of the electric slide (2). The grinding rod (61) passes through the inside of the tube rod (63) and is fixedly connected to the grinding wheel (9). The tube rod (63) is fixedly set on the outer shell of the motor (5). There are two switching bars (66) in each group. One end of the switching bar (66) is set as an arc surface. Among the four groups of switching bars (66), the upper and lower two groups and the left and right two groups are slightly shorter.
5. A high-speed brushless mechanical parts deep hole inner wall grinding machine according to claim 1, characterized in that: The movable ring (67) moves inside the tube rod (63), the connecting seat (68) slides inside the movable port (64), and the guide (610) is inserted into the groove of the reciprocating screw (62).
6. A high-speed brushless mechanical parts deep hole inner wall grinding machine according to claim 2, characterized in that: The two sides of the circular shaft (71) are located in the circular grooves (77) on both sides respectively. The fixing plate (72) and the connecting frame (73) are fixed together by nuts. The upper and lower two groups and the left and right two groups of the four sets of films (74) are staggered.
7. A high-speed brushless mechanical parts deep hole inner wall grinding machine according to claim 2, characterized in that: The spring piece (76) is fixedly connected inside the connecting seat (68). The positioning piece (79) passes through the inside of the round shaft (71) in the round groove (77) to a set of positioning grooves (78). The two ends of the driving block (710) are arc-shaped surfaces. The driving block (710) and the fixing strip (713) correspond to the position of the switching strip (66).
8. A high-speed brushless mechanical parts deep hole inner wall grinding machine according to claim 3, characterized in that: The connecting ring (81) is located at one end of the grinding wheel (9), the support foot (84) is arc-shaped, and the counterweight sleeve (85) is open at the position corresponding to the wheel axle (86).