CN203557179U - Rotary table transmission device of numerically-controlled gear milling machine for spiral bevel gear - Google Patents

Abstract

The utility model relates to a rotary table transmission device of a numerically-controlled gear milling machine for a spiral bevel gear. The rotary table transmission device comprises a feeding sliding plate and a rotary table base and is characterized in that the rotary table transmission device further comprises a worm wheel bottom sleeve, a worm wheel and worm gear pair, a rotary table swing rod mechanism, a second clamping oil cylinder, a first clamping oil cylinder and a supporting base, wherein the worm wheel bottom sleeve and the worm wheel and worm gear pair are used for driving a rotary table to rotate, the worm wheel bottom sleeve is supported by the rotary table base, a worm wheel is fixedly arranged on the worm wheel bottom sleeve, the lower end of the rotary table base is supported by the top face of the feeding sliding plate through a first flange, the rotary table swing rod mechanism is fixedly arranged on the top face of the feeding sliding plate, and the supporting base is fixedly arranged on the rotary table base; a worm gear of the worm wheel and worm gear pair is fixedly arranged on the rotary table base in a supporting mode. The rotary table transmission device has the advantages that workpiece boxes required for rough machining and workpiece boxes required for fine machining of workpieces are separated in a rotating mode, unnecessary abrasion is reduced, fine machining precision is improved, requirements of users for machining two specifications of gears are met, and the rotary table transmission device is reliable in structural design, good in rigidity, high in precision and free of low-speed crawling.

Description

Turntable Transmission Device of 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 turntable transmission device of a numerical control spiral bevel gear milling machine. the

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. 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 The smoothness of the tooth surface will also cause a great loss because the workpiece and the tool are not synchronized during the hobbing process and there is a danger of the knife hitting. the

Utility model content

In order to solve the technical problems in the known technology, the utility model provides a numerical control spiral bevel gear milling machine turntable transmission device with reasonable structure design, accurate processing, high precision, good rigidity and various processing methods. the

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

The turntable transmission device of the CNC spiral bevel gear milling machine, including the feed slide plate and the turntable base, is characterized in that it also includes a worm gear bottom sleeve and a worm gear pair for driving the turntable to rotate, which can realize the finishing of pinion gears and cycloidal gears The turntable swing lever mechanism, the second clamping oil cylinder for clamping the turntable base, the workpiece box body and the bottom sleeve of the worm gear, the first clamping oil cylinder and the support seat for clamping the turntable base and the feed slide;

The bottom sleeve of the worm gear is radially positioned by a group of bearings, and the end surface is supported on the base of the turntable, and can rotate around the cylinder on the feed slide plate. The bottom sleeve of the worm gear is fixedly equipped with a worm wheel;

The base of the turntable is radially positioned by a set of bearings of the worm wheel bottom sleeve, and the first flange is fixed at the lower end of the base of the turntable and 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 and the adjustment pad;

The support seat is fixed on the base of the turntable;

The worm of the worm gear and worm pair is fixedly mounted on the turntable base through cup-shaped sleeves, bearings, nuts and flange supports. the

The utility model can also adopt the following technical solutions:

The turntable pendulum mechanism includes a box body, a second shaft, a third shaft, a first bearing sleeve, a second bearing sleeve, a ball screw, a screw nut, a motor bracket and a second servo motor, and the second shaft passes through the bearing and the first bearing sleeve are supported on the supporting seat, the third shaft is supported on the box through the bearing and the second bearing sleeve; the ball screw is supported through the second cup-shaped sleeve, the fourth spacer sleeve, and the fifth spacer sleeve and the fourth flange are supported and fixed on the third shaft; the screw nut is fixed on the second shaft, and a motor bracket and a second servo motor are also fixed on the third shaft, and the second servo motor It is coaxially connected with the ball screw through the second coupling. the

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

The advantages and positive effects of the utility model are: because the utility model adopts the above-mentioned technical scheme, the adjustment of the cone angle of the workpiece box root and the large rotation of the loading and unloading are realized by using the worm gear and worm pair transmission, and the large gear of the forming method is realized through the turntable pendulum mechanism. Finishing of paired pinions and machining of cycloidal gears. 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 finish machining, but also meet the needs of users for machining two tooth systems. Reliable structural design, good rigidity, high precision, no low-speed crawling, stable movement, avoiding vibration marks on the tooth surface of the processed gear, not only improving the machining accuracy and tooth surface finish of the gear, but also greatly reducing costs and improving work efficiency. Easy for users to operate. the

Description of drawings

Fig. 1 is the top view of the utility model;

Fig. 2 is the A-A sectional view of Fig. 1;

Fig. 3 is a cross-sectional view of B-B of Fig. 2 rotated 90 degrees clockwise;

Fig. 4 is a 90-degree cross-sectional view of Z-Z of Fig. 1 rotated counterclockwise;

FIG. 5 is a partially enlarged view of FIG. 2 . the

In the figure: 501, feed slide plate; 502, first flange; 503, screw; 504, first clamping oil cylinder; 505, first piston; 506, spring; 507, second flange; 509, worm gear ;510, turntable base; 511, bearing; 512, worm gear bottom sleeve; 513, first shaft; 514, nut, 515, encoder; 516, first spacer; 517, second spacer; 518, first adjustment Pad; 519, the second adjusting pad; 520, the worm; 521, the third flange; 522, the third adjusting pad; 523, the first cup sleeve; 524, the transition plate; 525, the first coupling; 526 , the first servo motor; 527, the fourth adjusting pad; 528, the third spacer; 529, the ball screw; 530, the supporting seat; 531, the fifth adjusting pad; 532, the first bearing sleeve; 533, the second shaft ; 534, the fourth spacer; 535, the sixth adjustment pad; 536, the second bearing sleeve; 537, the third shaft; 538, the second cup sleeve; 539, the seventh adjustment pad; 540, the fifth spacer; 541, the second coupling; 542, the motor bracket; 543, the eighth adjustment pad; 544, the fourth flange; 545, the box; 546, the pressure plate; 547, the second clamping cylinder; 548, the second piston ; 549, T-shaped screw; 550, the second servo motor; 551, adjusting nut; 552, screw nut; 553, lock nut. the

Detailed ways

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

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. the

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

Please refer to Fig. 1-Fig. 5, the turntable transmission device of the CNC spiral bevel gear milling machine, including the feed slide 501 and the turntable base 510, also includes the worm gear bottom sleeve 512 for driving the turntable to rotate, and can realize the pinion The turntable pendulum mechanism for finishing with cycloid gear, the second clamping oil cylinder 547 for clamping the turntable base, the workpiece box body 404 and the bottom sleeve of the worm gear, and the first clamp for clamping the turntable base and the feed slide Tighten the oil cylinder 504 and the support seat 530. the

The worm gear bottom sleeve 512 is radially positioned by a group of bearings 511 and the first spacer 516, and its end face is supported on the turntable base 510, and can rotate around the cylinder on the feed slide plate. The worm gear bottom sleeve is fixedly equipped with a worm gear 509; the first spacer is fixed on the feed slide plate by screws 503, and the worm wheel 509 is fixed on the bottom cover of the worm wheel. the

The base of the turntable is radially positioned by a set of bearings 511 of the worm wheel bottom sleeve, and the first flange 502 is fixed at the lower end of the base of the turntable by screws 507 and supported on the top surface of the feed slide. The base of the turntable can be connected with the worm wheel The bottom cover rotates relatively. The first clamping cylinder 504 is fixed by screws on the top surface of the feed slide, and the piston 505 in the first clamping cylinder moves downward under the action of hydraulic oil to press and fasten the first flange mounted on the lower end of the turntable base. Disk 502, thereby compressing the turntable base on the feed slide plate, preventing the turntable base from rotating during processing. When the first clamping cylinder cuts off the oil, the spring 506 installed in the first clamping cylinder can push the second flange 507 fixed on the first piston, so that the first piston moves upward and resets, and the turntable base to resume rotation. the

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 . the

One end of the worm 520 of the worm gear pair is supported by the first cup sleeve 523 and its inner bearing, the other end is supported by the bearing, and is supported by the first spacer 517, the second adjustment pad 519, the nut 514, the first adjustment pad 518, the third flange 521, the third spacer 528 and the fourth adjusting pad 527 are fixed on the turntable base, 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 through the first coupling 525, and the first servo motor is fixed on the turntable base through the transition plate 524; the first adjusting pad 518 can adjust the meshing gap between the worm gear and the worm . the

The piston 548 of the second clamping oil cylinder is fixed on the workpiece box body 404 by screws, and the T-shaped screw passing through the second clamping oil cylinder is fixedly installed in the cylinder body of the second clamping oil cylinder 547 through a lock nut 553 549, the upper part of the T-shaped screw 549 is equipped with a pressure plate 546 and a screw that can prevent loosening, 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

Described turntable fork mechanism is fixed on the top surface of feed slide plate by box body 545, the 8th adjustment pad 543 and screw. The turntable pendulum mechanism includes a box body 545, a second shaft 533, a third shaft 537, a first bearing sleeve 532, a second bearing sleeve 536, a ball screw 529, a screw nut 552, a motor bracket 542 and a second servo motor 550. The second shaft 533 is supported on the supporting base 530 through bearings, the first bearing sleeve 532 and the fifth adjustment pad 531, and the third shaft 537 is supported on the support base 537 through the bearing, the sixth adjustment pad 535, and the second bearing sleeve 536. On the box body 545. The ball screw 529 is supported and fixed on the third shaft 537 through the second cup-shaped sleeve 538, the fourth spacer 534, the seventh adjustment pad 539, the fifth spacer 540 and the fourth flange 544; The screw nut 552 is fixed on the second shaft 533, and a motor bracket 542 and a second servo motor 550 are also fixed on the third shaft 537, and the second servo motor is connected with the ball screw through the second coupling 541. shaft connection. The ball screw is driven to rotate by the second servo motor, and the screw nut moves along the axial direction of the ball screw, pushing the second shaft 533 fixed with the screw nut to move together, thereby passing through the bearing and the support seat fixed on the base of the turntable 530 pushes the turntable base to rotate around the feed slide plate, and the ball screw rotates along the third axis 537 . At this time, the first clamping oil cylinder is in the loosened state, and the second clamping oil cylinder 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 matching with the large gear of the forming method. Finishing of pinions and machining of cycloidal gears. the

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 drives the worm screw 520 fixed on the base of the turntable to drive the worm wheel 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, realizing The adjustment of the taper angle of the workpiece box root and the large rotation of loading and unloading. the

Claims (3)

1. the turntable transmission device of a milling machine of digital-control spiral conical gear, comprise feed slide (501) and turret base (510), it is characterized in that: also comprise for driving cover (512) and worm couple at the bottom of the worm gear that turntable rotates, can realize pinion and the accurately machined turntable swing-bar mechanism of cycloid gear, for turret base, workpiece box casing (404) and the second clamping cylinder (547) that at the bottom of worm gear, cover clamps, for the first clamping cylinder (504) and the supporting base (530) of turret base and feed slide clamping;

At the bottom of described worm gear, cover (512) is supported on turret base (510) above by one group of bearing (511) radial location, end face, can turn round by the cylinder on feed slide, puts and be fixed with worm gear (509) at the bottom of described worm gear;

Described turret base is overlapped one group of bearing (511) radial location at the bottom of by worm gear, is fixedly mounted with the first ring flange (502) and is supported on the end face of feed slide in turret base lower end;

Described turntable swing-bar mechanism is packed on the end face of feed slide by casing (545) and adjusting pad;

Described supporting base (530) is packed in turret base (510);

The worm screw (520) of described worm couple is supported and is packed in turret base (510) by cup-shaped cover, bearing, nut and ring flange.

2. the turntable transmission device of milling machine of digital-control spiral conical gear according to claim 1, it is characterized in that: described turntable swing-bar mechanism comprises casing (545), the second axle (533), the 3rd axle (537), clutch shaft bearing cover (532), the second bearing holder (housing, cover) (536), ball-screw (529), screw, electric machine support (542) and the second servomotor (550), described the second axle (533) is supported on supporting base (530) by bearing and clutch shaft bearing cover (532), described the 3rd axle (537) is supported on casing (545) by bearing and the second bearing holder (housing, cover) (536), described ball-screw (529) supports and is fixed on the 3rd axle (537) by the second cup-shaped cover (538), the 4th spacer (534), the 5th spacer (540) and the 4th ring flange (544), it is upper that described screw is packed in the second axle (533), is also fixed with electric machine support (542) and the second servomotor (550) on the 3rd axle (537), and described the second servomotor is coaxially connected with ball-screw by the second shaft coupling (541).

3. the turntable transmission device of milling machine of digital-control spiral conical gear according to claim 1, is characterized in that: at the bottom of described worm gear, between cover (512) and feed slide (501), the encoder (515) for feeding back workpiece box rotary position and speed is housed.

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