CN202377837U

CN202377837U - Tool changer of numerical control turret head

Info

Publication number: CN202377837U
Application number: CN2011205080945U
Authority: CN
Inventors: 印正华
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-11-23
Filing date: 2011-11-23
Publication date: 2012-08-15
Anticipated expiration: 2021-11-23

Abstract

The utility model discloses a tool changer of a numerical control turret head for a numerical control machine. Tool is changed through inversion of the turret head. The inversion of the turret head is realized by driving a servo motor through a worm and a worm gear. Before inversion, the turret head moves outwards to separate an Allis plate. Thus, a rotating shaft is penetrated in the hole of a worm gear, the worm gear shaft and the rotating shaft are guided by using a key, the right end of the rotating shaft is tightly coupled with the turret head, and the piston rod passes through the hole of the rotating shaft to be movably connected with the turret head. Before inversion, the piston rod pushes the turret head to move a distance towards left so that the Allis plate is separated and the servo motor starts; after inversion, the servo motor rotates and the piston rod drives the turret head to move left so that the Allis plate is engaged and pressed. The speed change of the spindle movement is realized by changing the size of a belt wheel according to spindle motor frequency conversion and clutch engaging, transmission through a synchronous belt and a synchronous wheel to a fixed gear is ensured, and the fixed gear and a clutch gear are engaged so that the spindle can rotate. By using the tool changer, high-speed constant-power and low-speed constant-torque operation can be realized, and milling, boring, drilling, articulating, end surface grinding and the like are carried out.

Description

Numerical control turret head tool changing device

Technical field

The utility model relates to the functional part of Digit Control Machine Tool, and in particular, the utility model relates to a kind of capstan head tool magazine of Digit Control Machine Tool.

Background technology

The turret head structure of introducing in the Digit Control Machine Tool textbook is seen Fig. 1, and this turret head has eight main shafts, installs one on the every main shaft cutter, even if change the main spindle's tool changing, just can carry out different processing.Before changing main spindle's, oil cylinder 4 necessary releases, spring 2 promotes clutch gears 1 throws off with the gear 12 on the main shaft, moves on the clutch gear 1 and connects travel switch 3; Magnetic valve gets 5 actions of electric hydraulic cylinder, and piston moves to right and drives turret head and move to right, the mouse fluted disc 10 that is fixed on the turret head is thrown off after; The position rotaring motor startup, i.e. cutter spacing transposition at intermittence 45 degree are spent in sheave 11 transpositions at intermittence 45 that drive Geneva mechanisms through worm screw 8 and worm gear 6; After cutter spacing is chosen, the left alone without help commentaries on classics of position rotaring motor, hydraulic cylinder 5 work that moves again; Piston moves to left, and drives turret head and moves to left, and makes mouse fluted disc 10 engage and compress; Oil cylinder 4 connections this moment, compression spring 2 make gear 12 engagements on clutch gear 1 and the main shaft, connect main axis rotation and move.This device; Rotate calibration by Geneva mechanism, it is constant unmodifiable being difficult to during the sheave transposition that impact, the angle of transposition are steadily arranged; Can not adapt to polytechnic needs; This structure chart does not have to reflect the structure of whole transmission kinematic chain comprehensively simultaneously, and this figure is not replenished and improve design, can't make turret head.

Summary of the invention

1. a kind of numerical control turret head tool changing device of Digit Control Machine Tool is as shown in Figure 2; Form by turret head 2, mouse fluted disc 3, worm screw 4, worm gear 5, transmission case 6, worm-wheel shaft 7, rotating shaft 8, piston rod 9 and hydraulic cylinder 10 etc.; The transmission kinematic chain of whole turret head and turret head all are supported on the square transmission case body; Right fluted disc and rotary head tower are fixedly connected, and left fluted disc and transmission case are fixedly connected; End face is equipped with frequency control motor on the case, changes the speed of mainshaft through the upper and lower associative transformation belt wheel size of associating device again; In the side of transmission case servomotor 1 is housed, sees Fig. 3, packing 2 is housed, connect the worm and worm wheel engagement through sliding cross coupling 3 and worm screw 6 at the servomotor output shaft.

2. the last end face of said square transmission case body, vertical installation one main shaft variable-frequency motor 1 is seen Fig. 5; At motor output shaft synchronous pulley is housed, reaches jackshaft 2 to motion, clutch 3 is housed on jackshaft through synchronous band; The top of clutch connects with big belt wheel, and bottom and small pulley connect, if clutch upwards engages; Move through big belt wheel and reach small pulley, make power transmission shaft 4 rotation at a high speed; If clutch engages downwards; Move through small pulley and reach big belt wheel; Make power transmission shaft 4 low speed rotation, reach transition axis 5 to motion through belt wheel, synchronous band, a fixed gear 6 is arranged in the upper end of transition axis in the lower end of power transmission shaft; Through fixed gear and clutch gear 1 engagement shown in Figure 1, just pass to main shaft to motion.Through the spindle motor frequency control, can turn round by the permanent power of high speed, the permanent torque running of low speed can be satisfied technological requirement, is with the stable drive noiseless simultaneously synchronously, need not to lubricate again.

3. wear a rotating shaft 3 in the hole of said worm-wheel shaft 2, see Fig. 4, also lead the fastening connection of rotating shaft right-hand member and capstan head between worm-wheel shaft and rotating shaft with key connecting.

4. pass piston rod 4 in the hole of said rotating shaft, see Fig. 4, piston rod is the two-way ram bar, and right-hand member and turret head flexibly connect, and left end and spacing buting iron connect.

As everyone knows, worm gear pairs transmission worm gear be fixing can not do axially movable.The preceding turret head of transposition must outer move a distance throws off the mouse fluted disc, and by hydraulic cylinder 5 actions, piston rod moves to right, and the drive turret head moves to right the mouse fluted disc is thrown off; Servomotor starts, and through worm screw, worm gear, worm-wheel shaft, again through the key guiding, passes to rotating shaft to motion; Drive the capstan head body and rotate transposition, transposition finishes the left alone without help commentaries on classics of back servomotor, the hydraulic cylinder work that moves; Piston moves to left, and drives the capstan head body and moves to left, and the mouse fluted disc is engaged and compresses.

Description of drawings

Fig. 1 is the turret head structure chart of introducing in prior art-Digit Control Machine Tool textbook;

Fig. 2 is the utility model numerical control turret head knife rest profile and structure chart;

Fig. 3 is the utility model numerical control turret head knife rest transposition structure chart;

Fig. 4 is Fig. 3 A-A cutaway view;

Fig. 5 is the utility model numerical control turret head knife rest main transmission kinematic chain structure chart.

Fig. 6 is the numerical control turret center of using the utility model.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Among Fig. 3, worm screw 2 should be designed to two helical pitch worm screws, during the two helical pitch worm screw of adjustment, unclamps packing 2 earlier; Unclamp round nut 4 again, pull movably bearing holder (housing, cover) 5, make worm and gear be in the optimal engagement state; And tight round nut 4, the position of adjusting sliding cross coupling, the packing of clamping motor axle head.

Among Fig. 4; Lean on 1 engagement of mouse fluted disc accurately to locate after the turret head transposition, the mouse fluted disc should select the little made of back distortion of quenching, and reply mouse tooth grinds after tooth portion quenches; The number of teeth should be able to be divided exactly by 8; When cross grinding, than the number of teeth commentaries on classics of Duo of transposition 45 degree or change plurality of teeth less, just can make abrasive wheel end face and formed an inclination angle and carry out grinding by the grinding interplanar; Left end at piston rod 4 has buting iron, and the distance of adjustment buting iron position and microswitch just can be adjusted mouse fluted disc throw-off distances, and the thrust that the mouse fluted disc engages is controlled by the pressure switch in the hydraulic circuit.

Among Fig. 5, after choosing synchronous band model,, can not turn round like the processing error belt wheel according to belt length accurate Calculation center distance of belt wheel, can be as the case may be, gravity treatment is with synchronously, increases regulating wheel at appropriate location.

Among Fig. 6, be contained in the utility model turret head tool changing device on the up-down planker of nC vertical milling machine, this vertical knee-type milling machine has just become the numerical control turret machining center, can mill, processing such as brill, expansion, hinge, boring and cross grinding.

Claims

1. a kind of numerical control turret head tool changing device of Digit Control Machine Tool; Form by turret head (2), mouse fluted disc (3), worm screw (4), worm gear (5), transmission case (6), worm-wheel shaft (7) rotating shaft (8) piston rod (9) and hydraulic cylinder (10) etc.; It is characterized in that; Right fluted disc and rotary head tower are fixedly connected, and left fluted disc and transmission case are fixedly connected; End face is equipped with frequency control motor on the case, changes the speed of mainshaft through the upper and lower associative transformation belt wheel size of associating device again; Servomotor is equipped with in side at transmission case, at the servomotor output shaft packing is housed, and connects the worm and worm wheel engagement through sliding cross coupling and worm screw.

2. numerical control turret head tool changing device according to claim 1 is characterized in that end face on square box; Vertical installation one main shaft variable-frequency motor is equipped with synchronous pulley at motor output shaft, reaches jackshaft to motion through synchronous band; Clutch is housed on jackshaft, and the top of clutch connects with big belt wheel, and bottom and small pulley connect; If clutch upwards engages, move through big belt wheel and reach small pulley, power transmission shaft is rotated at a high speed; If clutch engages downwards, move through small pulley and reach big belt wheel, make the power transmission shaft low speed rotation; Lower end at power transmission shaft reaches transition axis to motion through belt wheel, synchronous band; In the upper end of transition axis one fixed gear is arranged,, just pass to main shaft to motion through fixed gear and clutch gear engagement.

3. numerical control turret head tool changing device according to claim 1 is characterized in that, in the hole of worm-wheel shaft, wears a rotating shaft, also leads the fastening connection of rotating shaft right-hand member and capstan head between worm-wheel shaft and rotating shaft with key connecting.

4. according to claim 1 or 3 described numerical control turret head tool changing devices, it is characterized in that in the hole of rotating shaft, pass piston rod, piston rod is the two-way ram bar, right-hand member and turret head flexibly connect, and left end and spacing buting iron connect.