CN218657800U - High-precision rotatable vertical machining center machining unit - Google Patents
High-precision rotatable vertical machining center machining unit Download PDFInfo
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- CN218657800U CN218657800U CN202222834439.7U CN202222834439U CN218657800U CN 218657800 U CN218657800 U CN 218657800U CN 202222834439 U CN202222834439 U CN 202222834439U CN 218657800 U CN218657800 U CN 218657800U
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Abstract
The utility model relates to a high-precision rotatable vertical machining center machining unit, a machine tool sliding saddle is connected with a sliding seat through a rotating shaft, a spindle box which slides up and down is arranged in the machine tool sliding saddle, and a spindle motor on the front surface of the spindle box drives a spindle in the spindle box to rotate; the rear end of the main spindle box is provided with a servo motor, a servo motor base is connected with a machine tool sliding saddle, and a power part of the servo motor is connected with the main spindle box; an arc-shaped rack is arranged on the rear end face of the machine tool sliding saddle, and the central axis of the arc-shaped rack is superposed with the axis of the rotating shaft; the sliding seat is provided with a swing motor, an output shaft of the swing motor is connected with an anti-backlash gear mechanism, and a gear in the anti-backlash gear mechanism is meshed with the arc-shaped rack. The machining unit adopts an arc-shaped rack and anti-backlash gear structure, so that the rotation action of the main shaft is realized, and the transmission precision of the machining unit is improved through the anti-backlash gear structure.
Description
Technical Field
The invention relates to a high-precision rotatable vertical machining center machining unit, and belongs to the technical field of machine tool accessories.
Background
At present, a rotatable vertical machining center machining unit is basically characterized in that a gear rack mechanism directly acts on a sliding seat component to drive a sliding saddle portion to rotate, and a reciprocating gear rack mechanism is easy to generate an inter-tooth gap when moving for a long time, namely the inter-tooth gap is easy to exist in the whole gear mechanism during working, and the machining precision of a machine tool is influenced.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-precision rotatable vertical machining center machining unit, which adopts an arc-shaped rack and anti-backlash gear structure, realizes the rotation action of a main shaft, and improves the transmission precision of the machining unit through the anti-backlash gear structure.
In order to solve the above problems, the specific technical scheme of the invention is as follows: a high-precision rotatable vertical machining center machining unit is characterized in that a machine tool sliding saddle is connected with a sliding seat through a rotating shaft, a spindle box which slides up and down is arranged in the machine tool sliding saddle, and a spindle motor on the front surface of the spindle box drives a spindle in the spindle box to rotate; the rear end of the main spindle box is provided with a servo motor, a servo motor base is connected with a machine tool sliding saddle, and a power part of the servo motor is connected with the main spindle box; an arc-shaped rack is arranged on the rear end face of the machine tool saddle, and the central axis of the arc-shaped rack is superposed with the axis of the rotating shaft; the sliding seat is provided with a swing motor, an output shaft of the swing motor is connected with an anti-backlash gear mechanism, and a gear in the anti-backlash gear mechanism is meshed with the arc-shaped rack.
An output shaft of the swing motor is connected with an anti-backlash gear connecting disc through a flange plate, the center of the anti-backlash gear connecting disc is coaxially connected with a central shaft, an internal gear is arranged on the end face close to the anti-backlash gear connecting disc, the internal gear and the central shaft are coaxially and integrally processed, and the anti-backlash gear connecting disc is connected with the end face of the internal gear through screws; an outer gear is coaxially arranged on the outer end face of the inner gear, and a central hole of the outer gear is matched with the central shaft; the end face of the outer gear is provided with a plurality of through holes which are distributed circumferentially, the axial jacking screws penetrate through the through holes and are in threaded connection with threaded holes corresponding to the end face of the inner gear, and the diameters of the through holes are larger than the outer diameters of the axial jacking screws; the end part of the gear of the external gear is provided with a coaxial cylinder, the cylinder is provided with an eccentric countersunk head threaded hole, the end part of the central shaft is provided with an eccentric groove, a disc spring is arranged in the groove, the central axis of the eccentric countersunk head threaded hole is consistent with the axis of the eccentric groove, and the bottom of the adjusting screw is tightly propped against the disc spring after being in threaded connection with the eccentric countersunk head threaded hole.
The cylinder be equipped with radial countersunk head screw hole, radial countersunk head screw hole internal thread connection radial top tight screw, the bottom surface top tight in the outer circumference of center pin of radial top tight screw.
The motor base is arranged outside the swing motor, the motor base is connected with the felt gear through a rotating shaft, and the felt gear is in tangential contact with the inner gear and the outer gear.
The bottom of the arc-shaped rack is provided with a pressing plate fixedly connected with a machine tool saddle; a steel guide rail is arranged on the sliding seat, and the steel guide rail corresponds to the position of the pressing plate; the pressure plate is connected with the gib through a bolt, and the surfaces of the two sides of the gib are respectively contacted with the surfaces of the steel guide rail and the pressure plate.
The pressing plate is movably connected with an adjusting screw, the outer end part of the adjusting screw is connected with a locking nut, and the inner end surface of the adjusting screw penetrates through the pressing plate and is tightly propped against the surface of the panel.
The pressure plate in be equipped with hydraulic braking system, its structure is: a plurality of inner holes are formed in the pressure plate, a brake piston is hermetically arranged in each inner hole, and the outer end face of each brake piston is in contact with the inlaid strip; an oil injection pipeline is arranged on the pressure plate, and branch pipelines on the oil injection pipeline are respectively communicated with the inner hole.
The application discloses rotatable vertical machining center of high accuracy processing unit adopts above-mentioned structure to have following advantage:
1. the arc gear and the anti-backlash gear mechanism are matched, so that the rotation action of the main shaft is realized;
2. the anti-backlash gear mechanism adopts a staggered internal gear and external gear structure, and ensures that no gap is meshed with the arc-shaped rack, so that the transmission precision is improved;
3. the inlaid strip is arranged between the relative positions of the machine tool saddle and the sliding seat, so that the stable operation is ensured, and the wear resistance is high;
4. a hydraulic braking system is arranged in the pressure plate, when the pressure plate rotates in place, braking can be achieved in real time, and rotation precision is guaranteed.
Drawings
Fig. 1 is a perspective view of a high-precision rotatable vertical machining center machining unit.
Fig. 2 is a connection structure diagram of the anti-backlash gear mechanism.
Fig. 3 isbase:Sub>A sectional viewbase:Sub>A-base:Sub>A of fig. 2.
Fig. 4 is a sectional view B-B of fig. 2.
Fig. 5 is a schematic view of the connection of the pressure plates.
Fig. 6 is a cross-sectional view C-C of fig. 5.
Fig. 7 is a schematic diagram of a hydraulic braking system in a pressure plate.
Detailed Description
As shown in fig. 1 to 3, a high-precision rotatable vertical machining center machining unit has the following structure: a machine tool sliding saddle 2 is connected with the sliding seat 1 through a rotating shaft 5, a spindle box 3 which slides up and down is arranged in the machine tool sliding saddle 2, and a spindle motor 6 on the front surface of the spindle box 3 drives a spindle in the spindle box 3 to rotate; a servo motor 7 is arranged at the rear end of the main spindle box 3, the base of the servo motor 7 is connected with the machine tool sliding saddle 2, and the power part of the servo motor 7 is connected with the main spindle box 3; an arc-shaped rack 9 is arranged on the rear end face of the machine tool saddle 2, and the central axis of the arc-shaped rack 9 is superposed with the axis of the rotating shaft 5; the sliding seat 1 is provided with a swing motor 4, an output shaft of the swing motor 4 is connected with an anti-backlash gear mechanism 10, and a gear in the anti-backlash gear mechanism 10 is meshed with the arc-shaped rack 9. The servo motor 7 drives the spindle box 3 to move up and down in the machine tool sliding saddle 2; the machine tool sliding saddle 2 rotates by taking the rotating shaft 5 as a center through the swing motor 4 and the anti-backlash gear mechanism, so that the spindle motor drives the spindle to rotate for a certain angle to machine parts.
As shown in fig. 4, an output shaft of a swing motor 4 is connected with an anti-backlash gear connecting disc 4-2 through a flange plate 4-1, the center of the anti-backlash gear connecting disc 4-2 is coaxially connected with a central shaft 4-4, an internal gear 4-3 is arranged on the end surface close to the anti-backlash gear connecting disc 4-2, the internal gear 4-3 and the central shaft 4-4 are coaxially and integrally processed, and the anti-backlash gear connecting disc 4-2 is in screw connection with the end surface of the internal gear 4-3; an outer gear 4-5 is coaxially arranged on the outer end face of the inner gear 4-3, and a central hole of the outer gear 4-5 is matched with the central shaft 4-4; a plurality of through holes which are distributed circumferentially are arranged on the end face of the outer gear 4-5, the axial jacking screw 4-6 penetrates through the through holes and is in threaded connection with a threaded hole corresponding to the end face of the inner gear 4-3, and the diameter of each through hole is larger than the outer diameter of the corresponding axial jacking screw 4-6; coaxial cylinders 4-7 are arranged at the end parts of the outer gears 4-5, eccentric countersunk head threaded holes are formed in the cylinders 4-7, eccentric grooves are formed in the end parts of the central shafts 4-4, disc springs 4-8 are arranged in the grooves, the central axis of each eccentric countersunk head threaded hole is consistent with the axis of each eccentric groove, and the bottom of each adjusting screw 4-9 is tightly propped against the corresponding disc spring 4-8 after being in threaded connection with the eccentric countersunk head threaded hole. In order to ensure no clearance in meshing transmission with the arc-shaped rack 9, the outer gear 4-5 generates micro deflection in the process of compressing the disc spring 4-8 by the adjusting screw 4-9, so that the inner gear 4-3 and the outer gear 4-5 generate a relative angle, and the arc-shaped rack 9 is in clearance-free fit, and the adjusting process adopts the eccentric action of the disc spring 4-8, so that the adjusting amount is controllable, and flexible adjustment is realized.
The cylinder 4-7 is provided with a radial countersunk head threaded hole, the radial countersunk head threaded hole is connected with a radial jacking screw 4-10 in a threaded manner, and the bottom surface of the radial jacking screw 4-10 is tightly jacked on the outer circumference of the central shaft 4-4.
The motor base 4-11 is arranged outside the swing motor 4, the motor base 4-11 is connected with the felt gear 4-12 through a rotating shaft, and the felt gear 4-12 is in tangential contact with the inner gear 4-3 and the outer gear 4-5. The felt gears 4-5 are provided with lubricating oil to ensure the lubrication of the gear rack mechanism and reduce the abrasion of the gear rack mechanism, so that the gear rack mechanism is ensured to stably work in motion, and the error caused by the inter-tooth gap is avoided, thereby influencing the processing precision of the workpiece.
As shown in fig. 5 and 6, a pressing plate 6-1 fixedly connected with a machine tool saddle 2 is arranged at the bottom of the arc-shaped rack 9; a steel guide rail 6-5 is arranged on the sliding seat 1, and the position of the steel guide rail 6-5 corresponds to that of the pressing plate 6-1; the pressure plate 6-1 is connected with the gib 6-4 through the bolt 6-6, and the two side surfaces of the gib 6-4 are respectively contacted with the steel guide rail 6-5 and the surface of the pressure plate 6-1. The pressing plate 6-1 is movably connected with an adjusting screw 6-3, the outer end part of the adjusting screw 6-3 is connected with a locking nut 6-2, and the inner end surface penetrates through the pressing plate 6-1 and is tightly propped against the surface of the inlaid strip 6-4. The fitting degree of the panel and the steel guide rail is adjusted by the adjusting screws 6-3 arranged on the pressing plate 6-1, after the sliding saddle 2 rotates for a certain time, a gap is easily generated between the panel and the steel guide rail, the precision is affected, the gap between the panel and the steel guide rail can be adjusted without being disassembled to a certain degree by adjusting the adjusting screws 6-3 of the panel pressing structure, the stability, the failure rate and the like of a B shaft of the machine tool are guaranteed, the machine tool error can be greatly reduced, and the requirement of a user for convenient maintenance can be met.
As shown in fig. 7, a hydraulic braking system is arranged in the pressure plate, and the structure of the hydraulic braking system is as follows: a plurality of inner holes are formed in the pressure plate 6-1, a brake piston 5-2 is arranged in each inner hole in a sealing mode, and the outer end face of each brake piston 5-2 is in contact with the inlaid strip 6-4; an oil injection pipeline 5-1 is arranged on the pressure plate 6-1, and branch pipelines on the oil injection pipeline 5-1 are respectively communicated with the inner hole. When oil pressure is applied to the oil injection pipeline 5-1, the brake piston 5-2 moves towards the gib direction to push the gib 6-4 to move towards the steel guide rail 6-5 direction, and the brake function is achieved due to the fact that the contact surface pressure is increased.
The gear clearance adjusting method of the high-precision rotatable vertical machining center machining unit is characterized by comprising the following steps of:
1) Firstly, a central shaft 4-4 and an anti-backlash gear connecting disc 4-2 are coaxially combined through bolts, and an internal gear 4-3 and the central shaft 4-4 are of an integral structure;
2) Connecting the anti-backlash gear connecting disc 4-2 with the flange 4-1 through bolts distributed circumferentially;
3) The external gear 4-5 is coaxially matched on the central shaft 4-4, and the external gear 4-5 and the internal gear 4-3 are preliminarily connected by adopting an axial jacking screw 4-6;
4) The combined external gear 4-5 and internal gear 4-3 are matched with an arc-shaped rack 9 together, the side face of the gear of the internal gear 4-3 is contacted with the side face of the arc-shaped rack 9 in one direction, an adjusting screw 4-9 is rotated, the external gear 4-5 slightly rotates under the eccentric driving of a disc spring 4-8 and is contacted with the side face of the arc-shaped rack 9 in the other direction, and then the position is locked by a radial tightening screw 4-10;
5) After the positions of the outer gears 4-5 are determined, the axial jacking screws 4-6 are tightened one by one, so that the outer gears 4-5 and the inner gears 4-3 are ensured not to move relatively, and the anti-backlash adjustment work is completed.
Claims (7)
1. The utility model provides a rotatable vertical machining center of high accuracy processing unit which characterized in that: the machine tool sliding saddle (2) is connected with the sliding seat (1) through a rotating shaft (5), a spindle box (3) which slides up and down is arranged in the machine tool sliding saddle (2), and a spindle motor (6) on the front surface of the spindle box (3) drives a spindle in the spindle box (3) to rotate; the rear end of the main shaft box (3) is provided with a servo motor (7), the base of the servo motor (7) is connected with a machine tool sliding saddle (2), and the power part of the servo motor (7) is connected with the main shaft box (3); an arc-shaped rack (9) is arranged on the rear end face of the machine tool saddle (2), and the central axis of the arc-shaped rack (9) is superposed with the axis of the rotating shaft (5); a swing motor (4) is arranged on the sliding seat (1), an output shaft of the swing motor (4) is connected with an anti-backlash gear mechanism (10), and a gear in the anti-backlash gear mechanism (10) is meshed with the arc-shaped rack (9).
2. The high precision rotatable vertical machining center processing unit of claim 1, further comprising: an output shaft of the swing motor (4) is connected with an anti-backlash gear connecting disc (4-2) through a flange plate (4-1), the center of the anti-backlash gear connecting disc (4-2) is coaxially connected with a central shaft (4-4), an internal gear (4-3) is arranged on the end face close to the anti-backlash gear connecting disc (4-2), the internal gear (4-3) and the central shaft (4-4) are coaxially and integrally processed, and the anti-backlash gear connecting disc (4-2) is in screw connection with the end face of the internal gear (4-3); an outer gear (4-5) is coaxially arranged on the outer end face of the inner gear (4-3), and a central hole of the outer gear (4-5) is matched with the central shaft (4-4); a plurality of through holes which are distributed circumferentially are arranged on the end face of the outer gear (4-5), the axial jacking screw (4-6) penetrates through the through holes and is in threaded connection with a threaded hole corresponding to the end face of the inner gear (4-3), and the diameter of each through hole is larger than the outer diameter of the axial jacking screw (4-6); coaxial cylinders (4-7) are arranged at the end parts of the gears of the outer gears (4-5), eccentric countersunk head threaded holes are formed in the cylinders (4-7), eccentric grooves are formed in the end parts of the central shafts (4-4), disc springs (4-8) are arranged in the grooves, the central axis of each eccentric countersunk head threaded hole is consistent with the axis of each eccentric groove, and the bottom of each adjusting screw (4-9) is tightly propped against the disc springs (4-8) after being in threaded connection with the eccentric countersunk head threaded holes.
3. The high accuracy rotatable vertical machining center processing unit of claim 2, wherein: the cylinder (4-7) is provided with a radial countersunk head threaded hole, the radial countersunk head threaded hole is connected with a radial jacking screw (4-10) in a threaded manner, and the bottom surface of the radial jacking screw (4-10) is tightly jacked on the outer circumference of the central shaft (4-4).
4. The high accuracy rotatable vertical machining center processing unit of claim 2, wherein: the motor base (4-11) is arranged outside the swing motor (4), the motor base (4-11) is connected with the felt gear (4-12) through a rotating shaft, and the felt gear (4-12) is in tangential contact with the inner gear (4-3) and the outer gear (4-5).
5. The high precision rotatable vertical machining center processing unit of claim 1, further comprising: the bottom of the arc-shaped rack (9) is provided with a pressing plate (6-1) fixedly connected with a machine tool saddle (2); a steel guide rail (6-5) is arranged on the sliding seat (1), and the position of the steel guide rail (6-5) corresponds to that of the pressing plate (6-1); the pressing plate (6-1) is connected with the gib (6-4) through the bolt (6-6), and the surfaces of the two sides of the gib (6-4) are respectively contacted with the steel guide rail (6-5) and the surface of the pressing plate (6-1).
6. The high accuracy rotatable vertical machining center processing unit of claim 5, wherein: the pressing plate (6-1) is movably connected with an adjusting screw (6-3), the outer end part of the adjusting screw (6-3) is connected with a locking nut (6-2), and the inner end surface penetrates through the pressing plate (6-1) and is tightly propped against the surface of the inlaid strip (6-4).
7. The high accuracy rotatable vertical machining center processing unit of claim 5, wherein: the pressure plate in be equipped with hydraulic braking system, its structure is: a plurality of inner holes are formed in the pressure plate (6-1), a brake piston (5-2) is arranged in each inner hole in a sealing mode, and the outer end face of each brake piston (5-2) is in contact with the inlaid strip (6-4); an oil injection pipeline (5-1) is arranged on the pressure plate (6-1), and branch pipelines on the oil injection pipeline (5-1) are respectively communicated with the inner hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222834439.7U CN218657800U (en) | 2022-10-27 | 2022-10-27 | High-precision rotatable vertical machining center machining unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222834439.7U CN218657800U (en) | 2022-10-27 | 2022-10-27 | High-precision rotatable vertical machining center machining unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218657800U true CN218657800U (en) | 2023-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222834439.7U Active CN218657800U (en) | 2022-10-27 | 2022-10-27 | High-precision rotatable vertical machining center machining unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218657800U (en) |
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2022
- 2022-10-27 CN CN202222834439.7U patent/CN218657800U/en active Active
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