CN203556966U - Full numerical control gear milling machine for spiral bevel gear - Google Patents

Abstract

The utility model relates to a full numerical control gear milling machine for a spiral bevel gear. The full numerical control gear milling machine comprises a lathe bed, a column, a toolbox, a workpiece box, a rotary table transmission device, an electrical system, a pneumatic system, a hydraulic system and a cooling system, and is characterized in that a tool main shaft torque motor rotor is connected with a tool main shaft, and a tool main shaft damping mechanism is mounted on the tool main shaft; one end of a workpiece main shaft is directly fastened with a worpiece main shaft torque motor rotor; a workpiece main shaft clamping mechanism is arranged at the other end in a toolbox body, and a workpiece main shaft damping mechanism is mounted on the workpiece main shaft; and the rotary table transmission device comprises a worm gear bottom sleeve and worm and gear pair, a rotary table swing rod mechanism, a rotary table clamping oil cylinder and a support seat. The gear milling machine has the advantages as follows: a torque motor is used as power for directly driving the tool main shaft and the workpiece main shaft, so that the transmission precision and the processing efficiency can be improved greatly, adjustment is facilitated, and the rigidity is good; and adjustment of a root angle of a workpiece box and large rotation of feeding and blanking are realized by the aid of worm and gear pair transmission, finish machining of a pinion matched with a gear wheel in forming method and gear machining of cycloidal teeth are realized by the aid of the rotary table swing rod mechanism.

Description

Full CNC spiral bevel gear milling machine

technical field

The utility model belongs to the technical field of bevel gear processing machine tools, in particular to a full numerical control spiral bevel gear milling machine.

Background technique

The design of the spiral bevel gear of the automobile drive axle mainly adopts two tooth systems: tapered teeth and cycloidal teeth. Tapered gear is a traditional main processing method, which has been widely used at home and abroad for a long time. In recent years, the design calculation and processing adjustment of cycloidal gears have been greatly simplified, and the adjustment of the contact area is also simpler and faster, and the bearing capacity of cycloidal gears is also higher. In the automobile industry at home and abroad, cycloidal gears are more and more widely used. Therefore, machine tools that can process both tapered and cycloidal teeth are becoming more and more popular.

Due to the principle of processing cycloidal teeth, it is required to increase the roll ratio of the tool and the workpiece on the basis of the original principle of processing shrinkage teeth, and the roll ratio is required to be accurate, while the traditional bevel gear milling machine workpiece box generally uses gear pairs or worm gear pairs Such transmission structure will not only make the structure of the machine tool complex and prolong the assembly cycle, but also easily generate transmission gap errors during the operation of the machine tool, which directly affects the machining accuracy and efficiency of the gear, and there is also the danger of knife hitting, causing great Loss.

For the full CNC (cross axis) gear milling machine, according to the principle of gear processing, when finishing the pinion gear paired with the large gear of the forming method and processing the cycloid gear, the workpiece box box is required to drive the tooling fixed on it. It swings together with the workpiece, and requires precise movement without backlash during rotation. The existing gear processing machine tools also use torque motors to directly drive the turntable to rotate. This structure may cause low-speed crawling due to unreasonable selection of the motor, resulting in vibration marks on the tooth surface of the processed gear, which will not only affect the machining accuracy of the gear and Tooth surface smoothness, but also because the workpiece and the tool are out of sync during hobbing, there is a danger of knife hitting, resulting in greater losses.

The tool spindle of the traditional gear milling machine is driven by a cradle, that is, the cutting tool (cutterhead) is fastened to the spindle of the cradle, and the cutterhead is installed in a certain position by means of the rotation of the eccentric drum of the cradle. This will not only lose transmission accuracy and transmission efficiency, but also limit the movement speed of the tool spindle. Due to the limitation of the tool spindle structure of the above-mentioned gear milling machine, at present, only the intermittent indexing method can be used to process spiral shrinking bevel gears and hypoid gears, but the continuous indexing method cannot be used to process cycloidal contour bevel gears and hypoid gears gear. Although the second-generation tool spindle structure using gear transmission has appeared in the past year, due to the influence of the machining accuracy of the gear itself, transmission errors are prone to occur, which in turn affects the machining accuracy of the bevel gear.

Utility model content

In order to solve the technical problems existing in the known technology, the utility model provides a reasonable structural design, using a torque motor as the power to directly drive the tool spindle and the workpiece spindle, which can greatly improve the transmission accuracy and processing efficiency, and is easy to adjust, has good rigidity and can Fully CNC spiral bevel gear milling machine that realizes various processing methods.

The technical scheme that the utility model takes for solving the technical problem existing in the known technology is:

Full CNC spiral bevel gear milling machine, including bed 100, column 200, tool box 300, workpiece box 400, turntable transmission device 500, electrical system, pneumatic system, hydraulic system and cooling system, the bed 100 is equipped with two For the linear guide rails that are horizontal and perpendicular to each other, a pair of linear guide rails 201 that are perpendicular to the bed guide rail and parallel to each other are fixed on the column, and the column and the turntable transmission device are respectively arranged on the bed linear guide rail. Hanging on the linear guide rail 201 on one side outside the column, the tool box includes the tool spindle box and the tool spindle arranged in the tool spindle box, the workpiece box 400 is arranged on the turntable transmission device 500, and the workpiece box includes The workpiece box body and the workpiece spindle are equipped with automatic moving mechanisms between the column and the bed, between the turntable transmission device and the bed, and between the column and the tool box, and a chip removal device is installed on one corner of the bed. It is characterized by:

The cutter spindle housing 311 is fixed with a cutter spindle torque motor stator 302 and a cutter spindle torque motor rotor 303, the cutter spindle torque motor rotor is connected to the cutter spindle 314 through a taper sleeve 301 and a key, and one end of the cutter spindle is connected to the cutter spindle through a sleeve 329 and the lock nut are equipped with a first encoder 320, and a tool spindle damping mechanism that can generate a reverse force is installed at the center of the tool spindle;

The workpiece spindle 401 is supported and fixed on the workpiece box body by the first bearing 402 and the first nut 403 of the workpiece box, and a workpiece spindle torque motor stator 415 is fixed in one end of the workpiece box box body 404, and one end of the workpiece spindle is directly connected to the The workpiece spindle motor torque rotor 407 is fastened; the other end of the workpiece box body is provided with a workpiece spindle clamping mechanism to prevent the workpiece spindle from rotating, and the workpiece spindle damping mechanism that can generate a reverse force is installed at the center of the workpiece spindle. A grating ruler 410 is fixedly installed at the end of the workpiece spindle through a transition plate 411;

The turntable transmission device 500 includes a feed slide plate 501 and a turntable base 510, and also includes a worm gear bottom sleeve 512 and a worm gear pair for driving the turntable to rotate, a turntable pendulum mechanism that can realize pinion and cycloid gear finishing, and The second clamping oil cylinder 547 of the turntable clamped on the base of the turntable, the workpiece box body 404 and the bottom sleeve of the worm gear, the first clamping oil cylinder 504 of the turntable used for clamping the base of the turntable and the feed slide plate, and the support seat 530; The bottom cover 512 is radially positioned by a set of turntable transmission bearings 511, and the end surface is supported on the turntable base 510, and can rotate around the cylinder on the sliding feed plate. The worm gear bottom cover is fixed with a worm wheel 509; the turntable base passes through A group of turntable transmission bearings 511 with the worm wheel bottom sleeve are radially positioned, and the first flange 502 of the turntable is fixed at the lower end of the turntable base and supported on the top surface of the feed slide; the turntable pendulum mechanism is adjusted through the box body 545 and The pad is fixed on the top surface of the feed slide; the support seat 530 is fixed on the turntable base 510; the worm 520 of the worm gear pair is fixed on the turntable through cup-shaped sleeves, bearings, nuts and flanges. on the base 510.

The utility model can also adopt the following technical solutions:

The tool spindle damping mechanism includes a tool spindle first gear 307 mounted on the tool spindle, a tool spindle second gear 322 mounted on the first transmission shaft 317 and meshed with the tool spindle first gear, and a tool spindle second gear 322 arranged on the tool spindle box. The tool box hydraulic motor 316 on one side of the body, the first transmission shaft is supported and installed in the tool box hydraulic motor seat 318 through a bearing, and the tool box hydraulic motor is connected with the first transmission shaft through a flat key.

A water tank is opened on the outer casing of the tool spindle torque motor stator, and a cooling water inlet joint 324 and a cooling water outlet joint 323 are provided to provide cooling water circulation for the torque motor cooling.

The workpiece spindle clamping mechanism includes a workpiece spindle clamping oil cylinder 417, a locking disc 418, a first flange 416 of the workpiece box and a second flange 420 of the workpiece box, and the workpiece spindle clamping oil cylinder is fixed by fasteners. Installed in the workpiece box body 404, the piston 421 of the workpiece spindle clamping cylinder is fastened to the second flange of the workpiece box, and the end of the workpiece spindle 401 is fixed with a locking disc and the first flange of the workpiece box .

The disc spring sheet 419 is housed in the workpiece spindle clamping oil cylinder 417 .

The workpiece spindle damping mechanism includes a workpiece spindle first damping gear 406 installed on the workpiece spindle, a workpiece spindle second damping gear 427 installed on the rotating shaft 424 through a key and meshed with the workpiece spindle first damping gear, and a workpiece box. The workpiece case hydraulic motor 423 on one side outside the casing is installed on the second support 422 of the workpiece case by bearing support, and the workpiece case hydraulic motor is connected with the rotating shaft by a flat key.

The swing bar mechanism of the turntable includes a box body 545, a second transmission shaft 533 of the turntable, a third transmission shaft 537 of the turntable, a first bearing sleeve 532 of the turntable, a second bearing sleeve 536 of the turntable, a ball screw 529, a screw nut 552, and a motor support 542 and the second servo motor 550 of the turntable, the second transmission shaft 533 of the turntable is supported on the support seat 530 through the bearing and the first bearing sleeve 532 of the turntable, and the third transmission shaft 537 of the turntable is supported by the bearing and the second bearing sleeve 536 of the turntable Supported on the box body 545; the ball screw 529 is supported and fixed on the third turntable through the second cup-shaped sleeve 538 of the turntable, the fourth spacer 534 of the turntable, the fifth spacer 540 of the turntable and the fourth flange 544 of the turntable. On the transmission shaft 537; the screw nut is fixed on the second transmission shaft 533 of the turntable, and the third transmission shaft 537 of the turntable is also fixedly equipped with a motor bracket 542 and a second servo motor 550 of the turntable, and the second servo motor of the turntable It is coaxially connected with the ball screw through the second coupling 541 of the turntable.

An encoder 515 for feeding back the rotary position and speed of the workpiece box is installed between the worm gear bottom sleeve 512 and the feed slide plate 501 .

The advantages and positive effects of the utility model are: because the utility model adopts the above-mentioned technical scheme, the torque motor is used to directly connect the tool spindle, and the torque motor directly drives the tool spindle to rotate, which not only avoids the transmission accuracy and transmission efficiency caused by the cradle transmission The loss of the tool spindle is improved, and the problem of the gear transmission structure affecting the machining accuracy, prone to transmission errors and high noise is solved. In addition, the hydraulic motor is used to provide a reverse force to the tool spindle through gear transmission to play a damping role, thereby making the tool spindle transmission more stable and reliable, and improving machining accuracy. The CNC spiral bevel gear milling machine adopts the tool spindle mechanism to perform high-speed and precise cutting on the spiral bevel gear, improve the machining accuracy and smoothness of the tooth surface, and then improve the transmission accuracy and transmission stability of the spiral bevel gear.

By adopting the transmission mode of the workpiece box with the torque motor directly driving the workpiece spindle, the transmission structure of the workpiece spindle can be simplified, the error caused by the transmission gap of the gear pair and worm gear pair can be eliminated, and the stepless speed regulation can be realized, and the bevel gear can be improved. The processing accuracy and processing efficiency can meet the user's processing needs for two types of gears: tapered gears and cycloidal gears. The application of the spindle clamping mechanism can also use the forming method to process the large gear to improve the rigidity and machining accuracy of the machine tool. The damping mechanism enables the hydraulic motor to apply damping force to the gear fixed on the workpiece main shaft by driving the gear fixed coaxially with it. In addition, it can also solve the problem that the rotation and indexing of the workpiece spindle of the mechanical spiral bevel gear milling machine can only be transmitted through the main motor through a long transmission chain, and the transmission accuracy efficiency is low due to the need to replace the hanging wheel set for different workpieces. , Operation cumbersome technical problems. The parts of the machine tool are reduced, not only the structure is simple, the processing and assembly of the machine tool are convenient, but also the processing cost can be reduced.

The adjustment of the cone angle of the workpiece and the large rotation of the loading and unloading are realized by the worm gear and worm pair transmission, and the fine machining of the small gear paired with the large gear of the forming method and the machining of the cycloid gear are realized through the turntable pendulum mechanism. A servo motor with a small torque can obtain a large thrust through the ball screw drive. The turntable transmission device can not only rotate and separate the workpiece box required for the rough and finish machining of the workpiece, reduce unnecessary wear and reduce the precision of finishing machining, but also has reliable structural design, good rigidity, high precision, no low-speed crawling, stable movement, and avoids being processed The gear tooth surface has vibration lines, which will not only improve the machining accuracy and tooth surface finish of the gear, but also greatly reduce the cost, improve work efficiency, and facilitate user operation.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic structural view of the tool case of the present utility model;

Fig. 3 is a structural schematic diagram of the utility model workpiece box;

Fig. 4 is A-A sectional view of Fig. 3;

Fig. 5 is a structural schematic diagram of the turntable transmission device of the present utility model;

Fig. 6 is the B-B sectional view of Fig. 5;

Fig. 7 is a 90-degree cross-sectional view of C-C in Fig. 6 rotated clockwise;

Fig. 8 is a cross-sectional view of D-D of Fig. 5 rotated 90 degrees counterclockwise;

Fig. 9 is an enlarged view of part I of Fig. 6 . .

In the figure: 100, bed; 200, column;

300, tool box; 301, taper sleeve; 302, tool spindle torque motor stator; 303, tool spindle torque motor rotor; 304, first lock nut; 305, first oil retaining plate; 306, first rotary oil seal; 307 , the first gear of the tool spindle; 308, the second rotary oil seal; 309, the second oil retainer; 310, the rear bearing; 311, the tool spindle box; 312, the front bearing; 313, the front cover; 314, the tool spindle; 315 , the second lock nut; 316, the tool box hydraulic motor; 317, the first transmission shaft; 318, the tool box hydraulic motor seat; 319, the first bearing; 320, the first encoder; 321, the tool box flange; 322, the second gear of the tool spindle; 323, the cooling water outlet joint; 324, the cooling water inlet joint; 325, the sealing cover; 326, the elastic retaining ring; 327, the box back cover; 328, the second lock nut; ;

400, the workpiece box; 401, the workpiece spindle; 402, the first bearing of the workpiece box; 403, the first nut; 404, the workpiece box box; 405, the first screw; 406, the first damping gear of the workpiece spindle; 407, the workpiece spindle Torque motor rotor; 408, the first bracket of the workpiece box; 409, the reading head; 410, the grating ruler; 411, the transition plate; 412, the second bearing of the workpiece box; 413, the key; 414, the rear cover; 415, the workpiece spindle torque motor Stator; 416, the first flange of the workpiece box; 417, the clamping cylinder of the workpiece box, 418, the locking plate; 419, the butterfly spring piece; 420, the second flange of the workpiece box; 421, the clamping cylinder of the workpiece box Piston; 422, the second bracket of the workpiece box; 423, the hydraulic motor of the workpiece box; 424, the rotating shaft; 425, the first spacer of the workpiece box; 426, the first adjustment pad of the workpiece box; 427, the second damping gear of the workpiece spindle; 428, Washer; 429, the second adjusting pad of the workpiece box; 430, the second spacer of the workpiece box; 431, the third adjusting pad of the workpiece box; 432, the third flange of the workpiece box; 433, the fourth adjusting pad of the workpiece box;

500, turntable transmission device; 501, feed slide plate; 502, first flange plate of turntable; 503, fastening screw; 504, first clamping oil cylinder of turntable; 505, piston of first clamping oil cylinder of turntable; 506, spring; 507, the second flange of the turntable; 509, the worm gear; 510, the base of the turntable; 511, the transmission bearing of the turntable; 512, the bottom sleeve of the worm wheel; 513, the first transmission shaft of the turntable; The first spacer; 517, the second spacer of the turntable; 518, the first adjustment pad of the turntable; 519, the second adjustment pad of the turntable; 520, the worm; 521, the third flange of the turntable; 522, the third adjustment pad of the turntable; 523, the first cup-shaped sleeve of the turntable; 524, the transition plate; 525, the first coupling of the turntable; 526, the first servo motor of the turntable; 527, the fourth adjustment pad of the turntable; 528, the third spacer of the turntable; 529, the ball Lead screw; 530, bearing seat; 531, the fifth adjusting pad of the turntable; 532, the first bearing sleeve of the turntable; 533, the second transmission shaft of the turntable; 534, the fourth spacer of the turntable; 535, the sixth adjusting pad of the turntable; 536, The second bearing sleeve of the turntable; 537, the third transmission shaft of the turntable; 538, the second cup-shaped sleeve of the turntable; 539, the seventh adjusting pad of the turntable; 540, the fifth spacer sleeve of the turntable; 541, the second coupling of the turntable; 542, Motor bracket; 543, eighth adjusting pad of turntable; 544, fourth flange of turntable; 545, box body; 546, pressure plate; 547, second clamping oil cylinder of turntable; 548, piston of second clamping oil cylinder of turntable; 549, T-shaped screw; 550, the second servo motor of the turntable; 551, the adjusting nut; 552, the screw nut; 553, the lock nut.

Detailed ways

In order to further understand the utility model content, characteristics and effects of the present utility model, the following examples are given hereby, and detailed descriptions are as follows in conjunction with the accompanying drawings:

Please refer to Figures 1-9, full CNC spiral bevel gear milling machine, including bed 100, column 200, tool box 300, workpiece box 400, turntable drive 500, electrical system, pneumatic system, hydraulic system and cooling system. Two pairs of horizontal and mutually perpendicular linear guide rails are arranged on the bed 100, a pair of linear guide rails 201 perpendicular to the bed guide rails and parallel to each other are fixed on the column, and the column and the turntable transmission device are respectively arranged on the bed on the linear guide. The tool box 300 is hung on the linear guide rail 201 on the outer side of the column, and the tool box includes a tool spindle box and a tool spindle arranged in the tool spindle box. The workpiece box 400 is arranged on the turntable transmission device 500, and the workpiece box includes a workpiece box body and a workpiece spindle. An automatic moving mechanism is also set between the column and the bed, between the turntable transmission device and the bed, and between the column and the tool box, and a chip removal device is provided at a corner of the bed.

Please refer to FIG. 2 , the tool box 300 includes: a tool spindle box 311 and a tool spindle 314 disposed in the tool spindle box. A tool spindle torque motor stator 302 and a tool spindle torque motor rotor 303 are fixed in the tool spindle housing, and the tool spindle torque motor rotor 303 is fixed on the taper sleeve 301 located in the spindle housing and connected to the tool spindle through a flat key . The tool spindle is supported and fixed in the tool spindle casing 311 and the casing back cover 327 by the front bearing 312, the rear bearing 310 and the auxiliary bearing. Cover 325. One end of the tool spindle is sealed by the front end cover 313, the other end of the tool spindle is equipped with a first encoder 320 through a sleeve 329 and a third lock nut 328, and a counter force can be installed in the center of the tool spindle. Damping mechanism.

In this embodiment, the damping mechanism includes a tool spindle first gear 307 mounted on the tool spindle, a tool spindle second gear 322 mounted on the first transmission shaft 317 and meshing with the tool spindle first gear, and a tool spindle second gear 322 arranged on the The tool box hydraulic motor 316 on the outer side of the tool spindle box body, the first transmission shaft is supported and installed in the tool box hydraulic motor seat 318 through a bearing, and the tool box hydraulic motor is connected with the first transmission shaft through a flat key. The tool main shaft first gear 317 is fixed on the tool main shaft 314 through the second lock nut 315, and the first transmission shaft 317 is supported and installed in the tool box hydraulic motor seat 318 through a pair of front bearings 319 and a rear bearing 319 , the front end of the first transmission shaft is fixed by the tool box flange 321 , and the rear end of the first transmission shaft is fixed by the second locking nut 315 . Described tool box hydraulic motor 316 is fixed on the tool box hydraulic motor seat 318, and described hydraulic motor shaft is connected with first transmission shaft 317 by flat key, can pass tool box hydraulic motor 318, the first transmission shaft 317, tool main shaft like this The transmission of the second gear 322 and the first gear 307 of the tool spindle plays a role of damping the reverse force of the tool spindle 314 .

The first oil deflector 305, the second oil deflector 309, the first rotary oil seal 306 and the second rotary oil seal 308 are installed on the box body 311. The first oil deflector 305, the second oil deflector 309, the first The rotary oil seal 306 and the second rotary oil seal 308 form an oil pool in the middle of the box body 311 to lubricate the first gear 307 and the second gear 322 .

The other end of the tool spindle 314 is equipped with an encoder 320 through a sleeve 329 and a second locking nut 328, and a full closed-loop control is realized through the encoder.

In this embodiment, a water tank is provided on the outer casing of the stator of the torque motor, and a cooling water inlet joint 324 and a cooling water outlet joint 323 are provided for the torque motor to provide cooling water circulation. The water outlet joint 323 is for the cooling of the torque motor.

Please refer to Fig. 3 and Fig. 4, the workpiece spindle is supported and fixed on the workpiece box body 404 through the first bearing 402 of the workpiece box (at the front and rear) and the first nut 403, and the first nut 403, the workpiece spindle first The damping gear 406 locks the inner ring of the first bearing, and the outer ring of the bearing is locked by the fourth adjusting pad 433 of the workpiece box and the first flange 416 of the workpiece box fixed on the box body 404 of the workpiece box, thereby realizing the axial direction of the workpiece spindle. , Radial positioning. The workpiece spindle torque motor stator 415 is fixed in the rear end of the workpiece box by the first screw 405, and the workpiece spindle rear end is directly connected to the workpiece spindle torque motor rotor 407 through the key 413, the transition plate 411 and the first nut 403. The rotor of the workpiece spindle torque motor is fastened to the rear end of the workpiece spindle, which can directly drive the workpiece spindle to rotate. The second bearing 412 of the workpiece box serves as an auxiliary support for the workpiece spindle 401, and a grating scale 410 is fixedly installed at the end of the workpiece spindle through a transition plate 411, and the grating scale rotates synchronously with the workpiece spindle 401 to feed back the position of the workpiece spindle. Below the grating ruler, a reading head 409 is installed through the first bracket 408 of the workpiece box, and the rear end of the workpiece box body is fixed with a rear cover 414 by screws.

The front end of the workpiece box body is provided with a spindle clamping mechanism to prevent the spindle from rotating. The spindle clamping mechanism includes a workpiece spindle clamping oil cylinder 417, a locking disc 418, a first flange 416 of the workpiece box and a second flange of the workpiece box. The blue plate 420, the workpiece spindle clamping oil cylinder is fixed in the workpiece box body through fasteners, the piston 421 of the workpiece spindle clamping oil cylinder is fastened to the second flange, and is fixed on the front end of the workpiece spindle There is a locking disc, a first flange and a fourth adjusting pad 433, and a disc spring 419 is housed in the clamping oil cylinder. The piston 421 in the clamping oil cylinder moves to the right under the action of the hydraulic oil and squeezes the locking disc 418 fixed on the front end of the workpiece spindle through the screw, and the locking disc produces elastic deformation and tightly presses the workpiece box fixed on the workpiece spindle The first flange and prevents the workpiece spindle from rotating. When the workpiece spindle clamping oil cylinder cuts off the oil, the butterfly spring sheet 419 installed in the workpiece spindle clamping cylinder can push the second flange 420 of the workpiece box fixed with the piston 421 to make the piston 421 move to the left and make the piston 421 move to the left. The piston resets, and at this moment, the workpiece spindle can resume rotation.

The central part of the workpiece spindle is equipped with a workpiece spindle damping mechanism that can generate a reverse force to it. The workpiece spindle damping mechanism includes a workpiece spindle first damping gear 406 installed on the workpiece spindle, and is installed on the rotating shaft 424 through a key 413. And the second damping gear 427 of the workpiece main shaft meshed with the first damping gear of the workpiece main shaft and the workpiece box hydraulic motor 423 arranged on the outer side of the workpiece box body, the rotating shaft 424 supports the workpiece box installed on the workpiece box box body through bearings On the second support 422, the hydraulic motor of the workpiece box is connected with the rotating shaft through a flat key. The second support 422 of the workpiece box is fixed on the workpiece box casing by the first adjustment pad 426 of the workpiece box, the first spacer 425 of the workpiece box, the second adjustment pad 429 of the workpiece box, the second spacer 430 of the workpiece box, The nut 403 locks the inner ring of the bearing, and the outer ring of the bearing is locked by the washer 428, the third adjusting pad 431 of the workpiece box, the third flange 432 of the workpiece box, and the first screw 405. The second damping gear 427 of the workpiece spindle is fastened on the rotating shaft 424 by screws, and the hydraulic motor 423 of the workpiece box is fixed on the second support 422 of the workpiece box, and the rotating shaft 424 and the second damping gear 427 of the workpiece spindle can be driven to rotate by the key 413 , the gear pair formed by the first damping gear 406 of the workpiece spindle and the second damping gear 427 of the workpiece spindle provides a reverse torque to realize the damping when the workpiece spindle rotates, so as to ensure that the workpiece spindle runs more smoothly during processing and reduces vibration.

Since the cycloidal teeth are cut continuously, the roll ratio between the tool and the workpiece is required to be precise, and the rotation speed of the tool spindle and the workpiece spindle is much higher than the speed of cutting the tapered teeth. Therefore, the transmission structure of the workpiece box with the direct drive of the spindle can meet the requirements. Accuracy requirements, but also meet the speed requirements. The workpiece spindle clamping mechanism is a clamping oil cylinder fixed at the front end of the workpiece box, which can clamp the workpiece spindle through the hydraulic system to prevent the workpiece spindle from rotating. The damping mechanism adopts a hydraulic motor, and applies a damping force to the first gear fixed on the workpiece main shaft by driving the second gear fixed coaxially with it.

Please refer to Fig. 5-Fig. 9, described turntable transmission device 500 comprises feed slide plate 501 and turntable base 510, also includes the worm gear bottom cover 512 and worm gear pair that are used to drive turntable to rotate, can realize pinion gear and cycloidal gear precision Turntable swing lever mechanism for processing, turntable second clamping cylinder 547 for clamping the turntable base, workpiece box body 404 and worm gear bottom sleeve, turntable first clamping cylinder 504 for clamping the turntable base and feed slide plate And the support seat 530; the worm wheel bottom cover 512 is radially positioned by a group of turntable transmission bearings 511, and the end surface is supported on the turntable base 510, and can rotate around the cylinder on the sliding feed plate. The worm wheel bottom cover is fixedly equipped with The worm wheel 509; the turntable base is radially positioned by a set of turntable transmission bearings 511 with the worm wheel bottom sleeve, and the first flange 502 of the turntable is fixed at the lower end of the turntable base and supported on the top surface of the feed slide; the turntable pendulum The rod mechanism is fixed on the top surface of the feed slide plate through the box body 545 and the adjustment pad; the support seat 530 is fixed on the turntable base 510; The flange support is fixed on the turntable base 510 .

It includes a feed slide 501 and a turntable base 510, a worm gear bottom sleeve 512 for driving the turntable to rotate, a turntable pendulum mechanism that can realize the finishing of pinion gears and cycloidal gears, a turntable base, and a workpiece box The second clamping oil cylinder 547 of the turntable for clamping the body 404 and the bottom sleeve of the worm wheel, the first clamping oil cylinder 504 of the turntable for clamping the base of the turntable and the feed slide plate, and the support seat 530.

The worm gear bottom sleeve 512 is radially positioned by a group of turntable transmission bearings 511 and the first spacer 516 of the turntable, and its end surface is supported on the turntable base 510, and can rotate around the cylinder on the feed slide plate. There is a worm wheel 509; the first spacer of the turntable is fixed on the feed slide plate through the fastening screw 503, and the worm wheel 509 is fixed on the bottom cover of the worm wheel.

The turntable base is radially positioned by a group of turntable transmission bearings 511 of the worm gear bottom sleeve, and the first flange 502 of the turntable is fixed at the lower end of the turntable base by fastening screws 503 and supported on the top surface of the feed slide plate. The base of the turntable can rotate relative to the bottom sleeve of the worm gear. The first clamping oil cylinder 504 of the turntable is fixed on the top surface of the feed slide plate with screws, and the piston 505 of the first clamping oil cylinder of the turntable moves downward under the action of hydraulic oil to press and fasten the first turntable mounted on the lower end of the turntable base. Blue plate 502, thereby the turntable base is pressed on the feed slide plate, prevents the turntable base from rotating during processing. When the first clamping oil cylinder of the turntable is cut off, the spring 506 installed in the cylinder body of the first clamping oil cylinder of the turntable can push the second flange 507 of the turntable fixed on the piston of the first clamping oil cylinder of the turntable, so that the second flange of the turntable Once the piston is moved upwards to reset, the turntable base can resume rotation.

The turntable pendulum mechanism is fixedly installed on the top surface of the feed slide plate through the box body 545 and the adjustment pad; the support base 530 is fixedly installed on the turntable base 510 .

One end of the worm 520 of the worm gear and worm pair is supported by the first cup sleeve 523 of the turntable and its internal bearing, the other end is supported by the bearing, and is supported by the first spacer 517 of the turntable, the second adjustment pad 519 of the turntable, the nut 514, the turntable The third flange 521, the third spacer 528 of the turntable and the fourth adjusting pad 527 of the turntable are fixed on the base of the turntable, which can drive the worm gear and drive the worm gear bottom sleeve to rotate, thereby driving the workpiece box fixed on the worm gear bottom sleeve to rotate. Realize the adjustment of the cone angle of the workpiece and the large rotation of loading and unloading. The worm is coaxially connected with the first servo motor 526 of the turntable through the first coupling 525 of the turntable, and the first servo motor of the turntable is fixed on the base of the turntable through the transition plate 524; the worm gear can be adjusted through the first adjustment pad 518 of the turntable , The meshing clearance of the worm.

The piston 548 of the second clamping oil cylinder of the turntable is fixedly mounted on the workpiece box body 404 by screws, and a T-shape penetrating through the second clamping oil cylinder is fixedly installed in the cylinder body of the second clamping oil cylinder 547 of the turntable through a lock nut 553 . Screw 549, the upper part of the T-shaped screw 549 is equipped with a pressure plate 546 and a screw that can play an anti-loosening effect, and the axial position of the T-shaped screw can be adjusted by adjusting the nut 551. The other end of the T-shaped screw is set in the T-shaped groove of the turntable base, and the cylinder body of the second clamping cylinder can move upward under the action of hydraulic oil, driving the T-shaped screw fixed together with it to move the workpiece box body Clamped with the base of the turntable (the box body of the workpiece box is fixed on the bottom sleeve of the worm gear). When the workpiece box is rotated to adjust the installation angle of the gear or when loading and unloading materials, the second clamping cylinder is in a loose state, and the first clamping cylinder is in a clamping state. State, in order to ensure that the base of the turntable does not move.

The turntable pendulum mechanism is fixed on the top surface of the feed slide plate through the box body 545, the eighth turntable adjustment pad 543 and screws. The swing bar mechanism of the turntable includes a box body 545, a second shaft 533 of the turntable, a third shaft 537 of the turntable, a first bearing sleeve 532 of the turntable, a second bearing sleeve 536 of the turntable, a ball screw 529, a screw nut 552, a motor support 542 and Turntable second servo motor 550. The second shaft 533 of the turntable is supported on the support seat 530 through the bearing, the first bearing sleeve 532 of the turntable and the fifth adjustment pad 531 of the turntable, and the third shaft 537 of the turntable is supported by the bearing, the sixth adjustment pad 535 of the turntable and the second adjustment pad 535 of the turntable. The bearing sleeve 536 is supported on the box body 545 . The ball screw 529 is supported and fixed on the third turntable by the second cup-shaped sleeve 538 of the turntable, the fourth spacer 534 of the turntable, the seventh adjustment pad 539 of the turntable, the fifth spacer 540 of the turntable and the fourth flange 544 of the turntable. on the shaft 537; the screw nut 552 is fixed on the second shaft 533 of the turntable, and the third shaft 537 of the turntable is also fixed with a motor bracket 542 and a second servo motor 550 of the turntable, and the second servo motor of the turntable passes through the turntable The second coupling 541 is coaxially connected with the ball screw. The ball screw is driven to rotate by the second servo motor of the turntable, and the nut moves along the axial direction of the ball screw, pushing the second shaft 533 of the turntable fixed with the nut to move together, thereby passing through the bearing and the shaft fixed on the base of the turntable. The support base 530 pushes the base of the turntable to rotate around the feed slide plate, and the ball screw rotates along the third axis 537 of the turntable. At this time, the first clamping oil cylinder of the turntable is in the loosened state, and the second clamping oil cylinder of the turntable is in the clamped state. After clamping the workpiece box fixed on the bottom sleeve of the worm wheel and the base of the turntable, they rotate together to realize the large gear with the forming method. Finishing of paired pinions and machining of cycloidal gears.

The turntable transmission device of the CNC bevel gear milling machine is set on the bed, the feed slide plate 501 is fixed with the nut of the ball screw set on the bed, the workpiece box is fixed on the worm gear bottom sleeve 512 of the turntable transmission device, and the feed The slide plate realizes the feeding of the workpiece box under the action of the ball screw pair on the bed. The first servo motor 526 of the turntable drives the worm 520 fixed on the base of the turntable to drive the worm gear 509 and its fixed worm gear bottom cover to rotate around the cylinder on the feed slide plate, thereby driving the workpiece box fixed on the worm wheel bottom cover to rotate. Realize the adjustment of the cone angle of the workpiece and the large rotation of loading and unloading.

It should be noted that, unless otherwise clearly stipulated and limited, the terms "first", "second", etc. do not represent sequential installation, nor do they represent the importance of the described components.

Examples of the described embodiments are shown in the drawings, wherein the same or similar reference numerals designate the same or similar components or components having the same or similar functions throughout.

Claims (8)

1. A full CNC spiral bevel gear milling machine, including bed (100), column (200), tool box (300), workpiece box (400), turntable transmission (500), electrical system, pneumatic system, hydraulic system and cooling system, two pairs of horizontal and mutually perpendicular linear guide rails are arranged on the bed (100), and a pair of linear guide rails (201) perpendicular to the bed guide rails and parallel to each other are fixed on the column. The column and the turntable transmission device are respectively arranged on the linear guide rail of the bed, and the tool box (300) is hung on the linear guide rail (201) on the outer side of the column. The tool box includes the tool spindle box and the tool spindle box The tool spindle, the workpiece box (400) is set on the turntable transmission (500), the workpiece box includes the workpiece box body and the workpiece spindle, between the column and the bed, between the turntable transmission and the bed 1. An automatic moving mechanism is also set between the column and the tool box, and a chip removal device is provided on a corner of the bed, which is characterized in that: The tool spindle box (311) is fixed with a tool spindle torque motor stator (302) and a tool spindle torque motor rotor (303), and the tool spindle torque motor rotor is connected to the tool spindle (314) through the taper sleeve (301) and the key. ) connection, one end of the tool spindle is equipped with a first encoder (320) through a sleeve (329) and a lock nut, and a tool spindle damping mechanism that can generate a reverse force is installed in the center of the tool spindle; The workpiece spindle (401) is supported and fixed on the workpiece box body by the first bearing (402) and the first nut (403) of the workpiece box, and the workpiece spindle torque motor stator ( 415), one end of the workpiece spindle is directly fastened to the torque rotor (407) of the workpiece spindle motor; the other end of the workpiece box body is provided with a workpiece spindle clamping mechanism to prevent the rotation of the workpiece spindle, and the center part of the workpiece spindle is equipped with a The workpiece spindle damping mechanism that generates a reverse force is fixed with a grating scale (410) at the end of the workpiece spindle through a transition plate (411); The turntable transmission device (500) includes a feed slide plate (501) and a turntable base (510), and also includes a worm gear bottom sleeve (512) and a worm gear pair for driving the turntable to rotate, which can realize the precision of the pinion gear and the cycloid gear. The machined turntable swing lever mechanism, the second clamping oil cylinder (547) of the turntable used for clamping the turntable base, the workpiece box body (404) and the bottom sleeve of the worm wheel, the first turntable used for clamping the turntable base and the feed slide plate Clamp the oil cylinder (504) and the support seat (530); the worm gear bottom sleeve (512) is radially positioned by a set of turntable transmission bearings (511), and the end surface is supported on the turntable base (510), and the feed plate can be slid around The upper cylinder rotates, and the worm gear bottom cover is fixed with a worm wheel (509); the turntable base is radially positioned by a set of turntable transmission bearings (511) with the worm wheel bottom cover, and the turntable is fixed at the lower end of the turntable base. The blue plate (502) is supported on the top surface of the feed slide; the turntable pendulum mechanism is fixed on the top surface of the feed slide through the box body (545) and the adjustment pad; the support seat (530) is fixed Installed on the turntable base (510); the worm (520) of the worm gear pair is fixedly mounted on the turntable base (510) through cup-shaped sleeves, bearings, nuts and flange supports. 2. The full CNC spiral bevel gear milling machine according to claim 1, characterized in that: the tool spindle damping mechanism includes the first gear (307) of the tool spindle installed on the tool spindle, the first gear installed on the first transmission shaft The tool spindle second gear (322) on (317) and meshed with the tool spindle first gear and the tool box hydraulic motor (316) arranged on the outer side of the tool spindle box body, the first transmission shaft is supported by bearings Installed in the tool box hydraulic motor seat (318), the tool box hydraulic motor is connected with the first transmission shaft through a flat key. 3. The fully numerically controlled spiral bevel gear milling machine according to claim 2, characterized in that: a water tank is opened on the outer casing of the tool spindle torque motor stator, and a cooling water inlet joint is provided for cooling the torque motor to provide cooling water circulation (324) and cooling outlet connector (323). 4. The full CNC spiral bevel gear milling machine according to claim 1, characterized in that: the workpiece spindle clamping mechanism includes a workpiece spindle clamping oil cylinder (417), a locking disc (418), and a workpiece box first The flange (416) and the second flange (420) of the workpiece box, the workpiece spindle clamping oil cylinder is fixed in the workpiece box body (404) through fasteners, and the piston of the workpiece spindle clamping oil cylinder (421) is fastened with the second flange of the workpiece case, and a locking disc and the first flange of the workpiece case are fixedly installed at the end of the workpiece main shaft (401). 5. The full numerical control spiral bevel gear milling machine according to claim 4, characterized in that: the workpiece spindle clamping oil cylinder (417) is equipped with a disc spring (419). 6. The fully numerically controlled spiral bevel gear milling machine according to claim 1, characterized in that: the workpiece spindle damping mechanism includes a workpiece spindle first damping gear (406) installed on the workpiece spindle, mounted on the rotating shaft through a key The second damping gear (427) of the workpiece spindle on (424) and meshed with the first damping gear of the workpiece spindle and the workpiece box hydraulic motor (423) arranged on the outer side of the workpiece box body, the rotating shaft is installed on the On the second bracket (422) of the workpiece box body, the hydraulic motor of the workpiece box is connected with the rotating shaft through a flat key. 7. The full CNC spiral bevel gear milling machine according to claim 1, characterized in that: the turntable pendulum mechanism includes a box body (545), the second transmission shaft of the turntable (533), the third transmission shaft of the turntable ( 537), the first bearing sleeve of the turntable (532), the second bearing sleeve of the turntable (536), the ball screw (529), the screw nut (552), the motor bracket (542) and the second servo motor of the turntable (550). The second transmission shaft (533) of the turntable is supported on the support seat (530) through the bearing and the first bearing sleeve (532) of the turntable, and the third transmission shaft (537) of the turntable is supported on the support base (530) through the bearing and the second bearing sleeve (536) of the turntable Supported on the box (545); the ball screw (529) passes through the second cup-shaped sleeve (538) of the turntable, the fourth spacer of the turntable (534), the fifth spacer of the turntable (540) and the fourth method of the turntable The blue plate (544) is supported and fixed on the third transmission shaft (537) of the turntable; The motor support (542) and the second turntable servo motor (550), the turntable second servo motor is coaxially connected with the ball screw through the turntable second coupling (541). 8. The full numerical control spiral bevel gear milling machine according to claim 1, characterized in that: between the worm gear bottom sleeve (512) and the feed slide plate (501), there is a device for feedbacking the rotary position and speed of the workpiece box Encoder (515).

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