A distributed pressure-bearing CNC servo drive device

Abstract

This utility model relates to the field of servo drive technology, and in particular to a distributed pressure-bearing CNC servo drive device, including a reducer. A housing is fixedly connected to the top of the reducer, and fixing devices are fixedly connected to both sides of the housing. A fixing sleeve is placed inside the housing. A bearing is fixedly connected to the upper outer side of the reducer, and a distributed pressure-bearing device is movably connected between the bearing and the fixing sleeve. This utility model, by incorporating a distributed pressure-bearing device, helps ensure stable rotation of the output shaft. When the output shaft is subjected to external force, the rubber sleeve moves relative to the fixing sleeve. Due to the large resistance between the rubber sleeve and the fixing sleeve, the output shaft is prevented from deforming under the action of the resistance and the pressure spring. Furthermore, the multiple distributed pressure-bearing devices can withstand forces from all directions and simultaneously distribute the force on the output shaft, ensuring the stability of the output shaft during rotation, thereby guaranteeing the reliability, efficiency, and performance stability of product processing.

Description

Technical Field

[0001] This utility model relates to the field of servo drive technology, and in particular to a distributed pressure-bearing CNC servo drive device. Background Technology

[0002] In CNC machine tool machining, servo motors are often required to provide driving power. A servo motor is a rotary actuator or linear actuator that allows for precise control of angular velocity or linear position, speed and acceleration.

[0003] When existing CNC servo drive devices are in use, their output shafts generally do not have a support structure. When the output shaft is affected by external forces, it is easy for the output shaft to deform, which can lead to instability when the output shaft rotates, thus affecting the machining accuracy. Utility Model Content

[0004] In view of this, the present invention provides a distributed pressure-bearing CNC servo drive device, the main technical problem to be solved is: the output shaft is prone to deformation due to external force, which leads to instability when the output shaft rotates.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a distributed pressure-bearing CNC servo drive device, comprising a reducer, a housing fixedly connected to the top of the reducer, fixing devices fixedly connected to both sides of the housing, a fixing sleeve placed inside the housing, a bearing fixedly connected to the upper outer side of the reducer, a distributed pressure-bearing device movably connected between the bearing and the fixing sleeve, the distributed pressure-bearing device comprising a fixing cylinder movably connected to the outside of the fixing sleeve and a connecting column movably connected to the outside of the bearing, the fixing cylinder having a cylinder hole inside, the connecting column having a column hole inside, a moving block fixedly connected to one end of the connecting column near the fixing cylinder, a rubber sleeve fixedly connected to the outside of the moving block, a pressure-bearing spring fixedly connected between the fixing cylinder and the moving block, and the connecting column and the rubber sleeve both movably connected to the fixing cylinder.

[0006] By adopting the above technical solution, when the output shaft is deformed by external force, it will drive the connecting column, which in turn will cause the moving block to move the rubber sleeve inside the fixed cylinder. The rubber sleeve fits against the inner wall of the fixed cylinder, making the resistance of the rubber sleeve relative to the fixed cylinder greater. Under the action of resistance, the output shaft will not easily deform. Furthermore, under the action of the pressure spring, the output shaft will be further prevented from deforming, and the output shaft will always be kept in the center position. Moreover, the setting of multiple distributed pressure bearing devices can withstand the force in all directions and can simultaneously distribute the force on the output shaft, ensuring the stability of the output shaft during rotation.

[0007] As a further description of the above technical solution: the reducer includes a housing, the top of which is provided with a threaded groove, a servo motor is fixedly connected to the lower part of the housing, an input shaft is fixedly connected to the output end of the servo motor, a first gear is fixedly connected to the outer side of the input shaft, a rotating shaft is movably connected to the middle of the housing, an output shaft is movably connected to the left side of the housing, a fourth gear is fixedly connected to the outer side of the output shaft, a second gear is fixedly connected to the outer side of the rotating shaft, a third gear is fixedly connected between the second gears, the first gear meshes with the second gear, and the third gear meshes with the fourth gear.

[0008] By adopting the above technical solution, the input shaft is driven to rotate by starting the servo motor. The rotation of the first gear causes the second and third gears to rotate, which in turn drives the shaft to rotate and causes the fourth gear to rotate, thereby driving the output shaft to rotate. The rotation of the output shaft then drives other components to process the workpiece.

[0009] As a further description of the above technical solution: the fixing device includes an outer cylinder fixedly connected to both sides of the outer shell, a limiting block movably connected inside the outer cylinder, an insert post fixedly connected inside the limiting block, and a fixing spring fixedly connected between the outer cylinder and the limiting block.

[0010] By adopting the above technical solution, the insert post is pulled to both sides, allowing it to retract into the outer cylinder, thereby allowing the fixing sleeve to be inserted into the housing. After insertion, the slot is aligned with the insert post. By releasing the insert post, the insert post can be inserted into the slot under the action of the fixing spring, thereby fixing the fixing sleeve.

[0011] As a further description of the above technical solution: the outer casing includes a housing placed on top of the casing, a sealing cover placed on top of the housing, a sleeve fixedly connected to the lower part of the sealing cover, bolts threadedly connecting the housing and the casing and the sleeve fixed to the lower part of the sealing cover, and through holes provided inside the housing and the sealing cover.

[0012] By adopting the above technical solution, the lower part of the sealing cover is fixedly connected with a sleeve, the top of the housing is provided with a slot for inserting the sleeve, and the upper part of the outer side of the housing and the inside of the sleeve are provided with screw holes for bolts to pass through. The sleeve can be fixed by screwing in the bolts, thereby fixing the sealing cover.

[0013] As a further description of the above technical solution: the bearing includes an inner ring fixedly connected to the outside of the output shaft, an outer ring placed outside the inner ring, a ball movably connected between the inner ring and the outer ring, a connecting block fixedly connected to the outside of the outer ring, and a fixed shaft fixedly connected between the connecting blocks.

[0014] By adopting the above technical solution, the inner and outer rings can rotate stably under the action of the balls, which ensures that the output shaft can rotate stably, and the fixed shaft is used to connect the rotation of the column.

[0015] As a further description of the above technical solution: the fixing sleeve includes a sleeve body placed inside the housing, and slots are provided on both sides of the sleeve body, and a connecting shaft is fixedly connected to the inner side of the sleeve body.

[0016] By adopting the above technical solution, the connecting shaft is used to fix the rotation of the cylinder.

[0017] By employing the above technical solution, the distributed pressure-bearing CNC servo drive device of this utility model has at least the following beneficial effects:

[0018] Compared with existing technologies, this distributed pressure-bearing CNC servo drive device, by incorporating distributed pressure-bearing devices, helps ensure the stable rotation of the output shaft. When the output shaft is deformed by external force, it drives the connecting column, which in turn causes the moving block to move the rubber sleeve inside the fixed cylinder. The rubber sleeve fits snugly against the inner wall of the fixed cylinder, increasing the resistance when the rubber sleeve moves relative to the fixed cylinder. This resistance prevents the output shaft from easily deforming, and the pressure spring further prevents deformation, ensuring that the output shaft remains in the center position. Furthermore, the multiple distributed pressure-bearing devices can withstand forces from all directions and simultaneously distribute the force on the output shaft, ensuring the stability of the output shaft during rotation. This, in turn, guarantees the reliability, efficiency, and performance stability of the product processing. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural diagram of a distributed pressure-bearing CNC servo drive device proposed in this utility model;

[0020] Figure 2 This is a schematic diagram of the overall structure of a distributed pressure-bearing CNC servo drive device proposed in this utility model;

[0021] Figure 3 This is a schematic cross-sectional view of the reducer structure of a distributed pressure-bearing CNC servo drive device proposed in this utility model;

[0022] Figure 4 This is a cross-sectional structural diagram of the distributed pressure bearing device of the distributed pressure bearing type CNC servo drive device proposed in this utility model;

[0023] Figure 5 This is a schematic diagram of the fixing device and the outer shell of a distributed pressure-bearing CNC servo drive device proposed in this utility model;

[0024] Figure 6This is a schematic diagram of the bearing cross-sectional structure of a distributed pressure-bearing CNC servo drive device proposed in this utility model;

[0025] Figure 7 This is a schematic diagram of the overall structure of the fixed sleeve of a distributed pressure-bearing CNC servo drive device proposed in this utility model.

[0026] Legend:

[0027] 1. Reducer; 101. Housing; 102. Threaded groove; 103. Output shaft; 104. Input shaft; 105. Rotating shaft; 106. First gear; 107. Third gear; 108. Second gear; 109. Servo motor; 110. Fourth gear; 2. Distributing pressure device; 201. Fixed cylinder; 202. Cylinder hole; 203. Pressure spring; 204. Moving block; 205. Rubber sleeve; 206. Connecting column; 207. Column 3. Fixing device; 301. Outer cylinder; 302. Limiting block; 303. Insert post; 304. Fixing spring; 4. Outer shell; 401. Housing; 402. Bolt; 403. Insert sleeve; 404. Through hole; 405. Sealing cover; 5. Bearing; 501. Inner ring; 502. Ball; 503. Outer ring; 504. Connecting block; 505. Fixing shaft; 6. Fixing sleeve; 601. Sleeve body; 602. Slot; 603. Connecting shaft. Detailed Implementation

[0028] Reference Figure 1-7This utility model provides a distributed pressure-bearing CNC servo drive device, including a reducer 1. A housing 4 is fixedly connected to the top of the reducer 1, and fixing devices 3 are fixedly connected to both sides of the housing 4. A fixing sleeve 6 is placed inside the housing 4. A bearing 5 is fixedly connected to the upper outer side of the reducer 1. A distributed pressure-bearing device 2 is movably connected between the bearing 5 and the fixing sleeve 6. The distributed pressure-bearing device 2 includes a fixing cylinder 201 movably connected to the outside of the fixing sleeve 6 and a connecting column 206 movably connected to the outside of the bearing 5. The fixing cylinder 201 has a cylinder hole 202 inside, which allows the fixing cylinder 201 to rotate outside the connecting shaft 603. The connecting column 206 has a column hole 207 inside, which allows the connecting column 206 to rotate outside the fixing shaft 505. A moving block 204 is fixedly connected to one end of the connecting column 206 near the fixing cylinder 201, and a rubber sleeve 205 is fixedly connected to the outside of the moving block 204. 5. A pressure spring 203 is fixedly connected between the fixed cylinder 201 and the moving block 204. The connecting column 206 and the rubber sleeve 205 are movably connected to the fixed cylinder 201. When the output shaft 103 is deformed by external force, it will drive the connecting column 206, which in turn will cause the moving block 204 to drive the rubber sleeve 205 to move inside the fixed cylinder 201. The rubber sleeve 205 fits against the inner wall of the fixed cylinder 201, making the resistance of the rubber sleeve 205 relative to the fixed cylinder 201 greater. Under the action of resistance, the output shaft 103 will not easily deform. Under the action of the pressure spring 203, the output shaft 103 is further prevented from deforming, and the output shaft 103 can always be kept in the center position. The arrangement of multiple distributed pressure bearing devices 2 can withstand the force in all directions and can simultaneously distribute the force on the output shaft 103, ensuring the stability of the output shaft 103 when rotating.

[0029] Furthermore, the reducer 1 includes a housing 101. A threaded groove 102 is provided on the top of the housing 101 for screwing in bolts 402 to fix the housing 401 to the housing 101. A servo motor 109 is fixedly connected to the lower part of the housing 101. An input shaft 104 is fixedly connected to the output end of the servo motor 109. A first gear 106 is fixedly connected to the outer side of the input shaft 104. A rotating shaft 105 is movably connected to the middle of the interior of the housing 101. An output shaft 103 is movably connected to the left side of the interior of the housing 101. A fourth gear 110 is fixedly connected to the outer side of the output shaft 103. A second gear 108 is fixedly connected to the outer side of the rotating shaft 105. A third gear 107 is fixedly connected between the first gear 106 and the second gear 108, and the third gear 107 and the fourth gear 110. By starting the servo motor 109, the input shaft 104 can drive the first gear 106 to rotate. The rotation of the first gear 106 causes the second gear 108 and the third gear 107 to rotate, which in turn drives the rotating shaft 105 to rotate and causes the fourth gear 110 to rotate, thereby driving the output shaft 103 to rotate. The rotation of the output shaft 103 drives other components to process the workpiece. Under the action of multiple gears, the speed of the output shaft 103 is reduced and the torque is increased, which can drive equipment with a larger load.

[0030] Furthermore, the fixing device 3 includes an outer cylinder 301 fixedly connected to both sides of the outer shell 4. A limiting block 302 is movably connected inside the outer cylinder 301. An insert post 303 is fixedly connected inside the limiting block 302. The limiting block 302 and the insert post 303 can move inside the outer cylinder 301. A fixing spring 304 is fixedly connected between the outer cylinder 301 and the limiting block 302. By pulling the insert post 303 to both sides, the insert post 303 can be retracted into the outer cylinder 301, thereby allowing the fixing sleeve 6 to be inserted into the shell 401. After insertion, the slot 602 is aligned with the insert post 303. After releasing the insert post 303, the insert post 303 can be inserted into the slot 602 under the action of the fixing spring 304, thereby fixing the fixing sleeve 6.

[0031] Furthermore, the outer casing 4 includes a housing 401 placed on top of the housing 101. A sealing cover 405 is placed on top of the housing 401. A sleeve 403 is fixedly connected to the lower part of the sealing cover 405. The top of the housing 401 is provided with a slot for inserting the sleeve 403. The upper outer side of the housing 401 and the inside of the sleeve 403 are provided with screw holes for bolts 402 to pass through. The sleeve 403 can be fixed by screwing in the bolts 402, thereby fixing the sealing cover 405. Bolts 402 are threadedly connected between the housing 401 and the housing 101 and between the housing 401 and the sleeve 403 fixed to the lower part of the sealing cover 405. The inside of the housing 401 and the sealing cover 405 is provided with through holes 404 for the passage and rotation of the output shaft 103.

[0032] Furthermore, the bearing 5 includes an inner ring 501 fixedly connected to the outside of the output shaft 103, an outer ring 503 placed outside the inner ring 501, and a ball bearing 502 movably connected between the inner ring 501 and the outer ring 503. The inner ring 501 and the outer ring 503 can rotate stably under the action of the ball bearing 502 to ensure that the output shaft 103 can rotate stably. A connecting block 504 is fixedly connected to the outside of the outer ring 503, and a fixed shaft 505 is fixedly connected between the connecting blocks 504. The fixed shaft 505 is used to connect the rotation of the column 206.

[0033] Furthermore, the fixing sleeve 6 includes a sleeve body 601 placed inside the housing 401. Slots 602 are provided on both sides of the sleeve body 601. The slots 602 are used for the insertion of the insert post 303. A connecting shaft 603 is fixedly connected to the inner side of the sleeve body 601. The connecting shaft 603 is used for the rotation of the fixing cylinder 201.

[0034] Working principle: During use, starting the servo motor 109 causes the input shaft 104 to drive the first gear 106 to rotate. The rotation of the first gear 106 causes the second gear 108 and the third gear 107 to rotate, simultaneously driving the rotating shaft 105 to rotate and causing the fourth gear 110 to rotate, which in turn drives the output shaft 103 to rotate. The rotation of the output shaft 103 drives other components to process the workpiece. When the output shaft 103 is subjected to external force and deforms, it can drive the connecting column 206, which in turn causes the moving block 204 to drive the rubber sleeve 205 to move in a fixed position. The rubber sleeve 205 moves inside the fixed cylinder 201 and fits against the inner wall of the fixed cylinder 201, making the resistance of the rubber sleeve 205 greater when it moves relative to the fixed cylinder 201. Under the action of resistance, the output shaft 103 will not easily deform. Furthermore, under the action of the pressure spring 203, the output shaft 103 is further prevented from deforming, and the output shaft 103 is kept in the center position. The arrangement of multiple distributed pressure bearing devices 2 can withstand the force in all directions and can simultaneously distribute the force on the output shaft 103, ensuring the stability of the output shaft 103 when rotating.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A distributed pressure-bearing type CNC servo drive device, comprising a reducer (1), characterized in that: The top of the reducer (1) is fixedly connected to a housing (4), and both sides of the housing (4) are fixedly connected to fixing devices (3). A fixing sleeve (6) is placed inside the housing (4). A bearing (5) is fixedly connected to the upper outside of the reducer (1). A pressure-bearing device (2) is movably connected between the bearing (5) and the fixing sleeve (6). The pressure-bearing device (2) includes a fixing cylinder (201) movably connected to the outside of the fixing sleeve (6) and a connecting column (206) movably connected to the outside of the bearing (5). The fixed cylinder (201) has a cylinder hole (202) inside, and the connecting column (206) has a column hole (207) inside. A movable block (204) is fixedly connected to one end of the connecting column (206) near the fixed cylinder (201). A rubber sleeve (205) is fixedly connected to the outside of the movable block (204). A pressure spring (203) is fixedly connected between the fixed cylinder (201) and the movable block (204). The connecting column (206) and the rubber sleeve (205) are both movably connected to the fixed cylinder (201).

2. The distributed pressure-bearing type CNC servo drive device according to claim 1, characterized in that: The reducer (1) includes a housing (101), the top of the housing (101) is provided with a screw groove (102), the lower part of the housing (101) is fixedly connected to a servo motor (109), the output end of the servo motor (109) is fixedly connected to an input shaft (104), the outer side of the input shaft (104) is fixedly connected to a first gear (106), the middle of the inside of the housing (101) is movably connected to a rotating shaft (105), the left side of the inside of the housing (101) is movably connected to an output shaft (103), the outer side of the output shaft (103) is fixedly connected to a fourth gear (110), the outer side of the rotating shaft (105) is fixedly connected to a second gear (108), the second gear (108) is fixedly connected to a third gear (107), the first gear (106) meshes with the second gear (108), and the third gear (107) meshes with the fourth gear (110).

3. The distributed pressure-bearing type CNC servo drive device according to claim 1, characterized in that: The fixing device (3) includes an outer cylinder (301) fixedly connected to both sides of the outer shell (4), a limiting block (302) movably connected inside the outer cylinder (301), a plug (303) fixedly connected inside the limiting block (302), and a fixing spring (304) fixedly connected between the outer cylinder (301) and the limiting block (302).

4. The distributed pressure-bearing type CNC servo drive device according to claim 1, characterized in that: The outer casing (4) includes a housing (401) placed on top of the housing (101), a sealing cover (405) placed on top of the housing (401), a sleeve (403) fixedly connected to the lower part of the sealing cover (405), bolts (402) are threadedly connected between the housing (401) and the housing (101) and between the housing (401) and the sleeve (403) fixed to the lower part of the sealing cover (405), and through holes (404) are provided inside the housing (401) and the sealing cover (405).

5. The distributed pressure-bearing type CNC servo drive device according to claim 1, characterized in that: The bearing (5) includes an inner ring (501) fixedly connected to the outside of the output shaft (103), an outer ring (503) placed outside the inner ring (501), a ball (502) movably connected between the inner ring (501) and the outer ring (503), a connecting block (504) fixedly connected to the outside of the outer ring (503), and a fixed shaft (505) fixedly connected between the connecting blocks (504).

6. The distributed pressure-bearing type CNC servo drive device according to claim 1, characterized in that: The fixing sleeve (6) includes a sleeve body (601) placed inside the housing (401), and slots (602) are provided on both sides of the sleeve body (601). A connecting shaft (603) is fixedly connected to the inner side of the sleeve body (601).

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