CN2629879Y

CN2629879Y - Dual spindle machine tool

Info

Publication number: CN2629879Y
Application number: CN 03213172
Authority: CN
Inventors: 邹莹; 陈丽文; 刘大敏; 刘世玉
Original assignee: SHENYANG FIRST MACHINE TOOL PLANT
Current assignee: SHENYANG FIRST MACHINE TOOL PLANT
Priority date: 2003-05-16
Filing date: 2003-05-16
Publication date: 2004-08-04
Anticipated expiration: 2013-05-16

Abstract

The utility model relates to a machine tool improvement technology, in particular to a double-main-axle machine tool, which comprises a machine tool body and a main axle and is characterized in that the working surface of the machine tool body (3) is a slantingly positioned structure and is provided with double main axles (1 and 2) and a machine tool saddle (4) sliding along the machine tool body (3), wherein the first main axle (1) is fixed on the machine tool body (3); the secondary main axle (2) sliding along the machine tool body (3) and the first main axle (1) are positioned axially; the servo dynamic cutter rack (6) is fixed on the slide board (5) sliding along the X-axis along the machine tool saddle (4). The utility model has double main axles structure and is simultaneously equipped with the servo dynamic cutter rack. One the basis of the turning function, the boring and milling functions are increased, thereby obviously improving the production efficiency, so the machine is a high-speed and high-efficiency turning center with the milling and turning functions.

Description

A kind of pair of main axle machine tool

Technical field

The utility model relates to lathe improvement technology, is specially a kind of pair of main axle machine tool.

Background technology

On common lathe, has only a fixed main shaft, feed change unit has vertically, laterally double-decker and transmission system correspondingly, when knife rest parallels feed at main-shaft axis, can finish cylinder processing, can finish end face processing when the feed of vertical with main-shaft axis plane, this lathe structure working (machining) efficiency is low, clamping apparatus is changed frequent, the feeding system complexity.

China's utility model patent (patent No. 93205550.8, Granted publication CN2177549Y, September 21 1994 Granted publication day) a kind of Double spindle type lathe is disclosed, mainly by two main shafts, knife rest, compositions such as handwheel, one of them main shaft is perpendicular to the cutter platform, another main shaft is parallel to the cutter platform, two main shafts are worked in coordination, when the single direction feed, can on a main shaft, finish face of cylinder processing, on another main shaft, finish end face processing, thereby reduce feeding system and frock clamp, its weak point is that this pair of main axle machine tool is very restricted for the processing of complex part, and can only carry out turning.In recent years along with industrial develop rapidly such as automobile, motorcycle, military project, Aeronautics and Astronautics household electrical appliances, light industry, the technical merit of its base components improves constantly, structure is more and more compacter, therefore shape becomes increasingly complex, and produces at a high speed, high-precision, development trend that compoundization of function lathe becomes machine industry.

The utility model content

The purpose of this utility model provides a kind of pair of main axle machine tool, its opposed pair of main axle structure is equipped with servo power knife rest simultaneously, having increased brill on the basis of turning function, milled function, production efficiency is significantly improved, is the high speed with milling function, efficient turning center.

The technical solution of the utility model is:

A kind of pair of main axle machine tool, have lathe bed, main shaft, the working face of described lathe bed is tilting structure, the saddle that two main shafts is housed on it and slides along lathe bed, wherein first main shaft is fixed in lathe bed, axially opposed along second main shaft and first main shaft that lathe bed slides, servo power knife rest is fixed in along on the slide plate of saddle X-direction slip.

Described lathe bed working face and horizontal plane angle are 30～60 °.

Described servo power knife rest, slide plate, saddle and two main shaft are electrically connected with servomotor respectively.

Described pair of main shaft is the built-in type electric machine main shaft.

The bearing of described pair of main shaft adopts the spindle bearing structure of ceramic ball bearing and cylinder roller bearing combination.

Be fixed with the sensor that is electrically connected with digital control system respectively on the described pair of main shaft and measure ring.

Described pair of main shaft is connected with the brake damping unit respectively.

Described brake damping unit is the mechanism that brake disc passes through oil cylinder, piston apparatus braking, and brake disc is fixed in spindle nose, and the brake disc both sides set gradually piston, oil cylinder respectively, and back-moving spring links to each other with piston.

The voltage supply device of described oil cylinder is the hydraulic system of high and low pressure combination.

The beneficial effects of the utility model are:

1, the utility model comprises a lathe bed and two main shafts, adopts the two main axle structures of opposed type, and under the effect of three feed mechanisms, saddle, slide plate and second main shaft can be finished machining in X-direction, Z-direction and the relative motion of W direction of principal axis.Wherein second main shaft is under the drive of feed mechanism, can carry out axially-movable, and be equipped with servo power knife rest simultaneously, can control two main shafts synchronously and dock institute's processing work by digital control system, thereby can utilize two main shafts that same workpiece is processed, use the utility model can finish most of or whole manufacturing procedure such as boring, tapping, calibration milling, improved production efficiency and machining accuracy, easy to operate.

2, the two main shafts of the utility model all adopt the built-in type electric machine main shaft, and band C axle calibration function is the machine tool chief axis of φ 250 as maximum machining diameter, and maximum speed of spindle reaches 7000r/min.Adopt the stator and the rotor of inner electric machine, select the spindle bearing structure of high-precision ceramic ball bearing and cylinder roller bearing combination, be equipped with the high accuracy spindle encoder of inner electric machine constant temperature cooling circuit, bearing lubrication and the type of cooling and the sensor and the measurement ring formation of reliable in structure, it is simple in structure, the running precision height.

3, the utility model has been equipped with the brake damping unit in rear-end of spindle, after operation dividing movements such as boring, tapping, milling are finished, the brake oil cylinder action, oil cylinder piston acts on the brake disc, moment of friction on the brake disc is enough to overcome the moment of couple that boring, tapping, milling etc. produce, brake gear has two kinds of duties of high and low pressure, lathe starts high pressure conditions when fixedly boring of main shaft, tapping, milling, start low-pressure state when main shaft C axle and other feed shafts carry out moving interpolation.This device can prevent to make the shake of main shaft generation effectively in process such as boring, tapping, milling, further improved crudy.

Description of drawings

Fig. 1 is a general illustration of the present utility model.

Fig. 2 is a main axle structure schematic diagram of the present utility model.

Fig. 3 is a main shaft brake damping unit structural representation of the present utility model.

The specific embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

Shown in Fig. 1～3, the utlity model has lathe bed 3, two main shaft 1,2, the working face of described lathe bed 3 is tilting structure, the saddle 4 that two main shafts 1,2 is housed on it and slides along lathe bed 3, wherein first main shaft 1 is fixed in lathe bed 3, axially opposed along second main shaft 2 and first main shaft 1 that lathe bed 3 slides, servo power knife rest 6 is fixed in along on the slide plate 5 of saddle 4X direction of principal axis slip, and servo power knife rest 6, slide plate 5, saddle 4 and two main shafts 1,2 are electrically connected with servomotor respectively; Be fixed with the sensor 10 that is electrically connected with digital control system respectively on two main shafts 1,2 and measure ring 11; Two main shafts 1,2 are connected with the brake damping unit respectively, the brake damping unit is the mechanism of brake disc 12 by oil cylinder, piston apparatus braking, brake disc 12 is fixed in main shaft 1 end, and brake disc 12 both sides set gradually piston 15, oil cylinder 13 respectively, and back-moving spring 14 links to each other with piston 15.The MTC200-P type digital control system that digital control system of the present utility model adopts German BOSCH-REXROTH company to produce can meet the demands.

As shown in Figure 1, the structural similarity of lathe of the present utility model and centre numerically controlled lathe, just lathe bed is different with the feed mechanism of tailstock, lathe bed 3 is 45 ° of tilting lathe beds, first main shaft 1 and second main shaft 2 and saddle 4 are arranged above, under the effect of three feed mechanisms, saddle 4, the slide plate 5 and second main shaft 2 can be in X-directions, Z-direction and the relative motion of W direction of principal axis, X-axis, Z axle and W axle lead to the parts that move on three directions by line slideway (not showing among the figure), second main shaft 2 moves forward and backward along the W axis rail, servo power knife rest 6 is installed on the X-axis slide plate 5, knife rest moves up and down along the X-axis guide rail with slide plate, three feed mechanisms are servomotor and directly are connected with ball-screw by a yielding coupling, two ends are the feed mechanism that block bearing is formed, and adopt servomotor control respectively.

As shown in Figure 2, lathe two main shafts 1,2 of the present utility model are the built-in type electric machine main shaft, the built-in type motor is stator, rotor mechanism, stator 8 is fixing with main shaft 1,2 respectively, drive power by stator 8 and rotor 9 conducts, bearing 7 is the front and back supporting, the spindle bearing structure that bearing adopts selection high-precision ceramic ball bearing that Japanese NSK company produces and cylinder roller bearing to make up, drive main shaft 1 and do rotation at a high speed, sensor 10 and measure ring 11 and in time feed back the spindle operation error to control system as the high accuracy spindle encoder.The 1MR160N-A060 type rotor that its rotor adopts German BOSCH-REXROTH company to produce, the 1MS160N-4C-A1 type stator that the German BOSCH-REXROTH of stator 8 employings company produces, the SH2-256-5-1N type sensor that the German BOSCH-REXROTH of sensor 10 employings company produces is measured ring 11 and is adopted MH2-256-5-055A types measurement ring.

The structure of the brake damping unit of lathe two main shafts 1,2 of the present utility model as shown in Figure 3, brake disc 12 is fixed on main shaft 1 end.When hydraulic starting, oil cylinder 13 actions, both sides oil cylinder piston 15 acts on the brake disc 12 simultaneously, and behind to be processed the finishing, the hydraulic pressure off-load promotes two-piston 15 by spring 14 and resets.

Claims

1, a kind of pair of main axle machine tool, have lathe bed, main shaft, it is characterized in that: the working face of described lathe bed (3) is tilting structure, the saddle (4) that two main shafts (1,2) is housed on it and slides along lathe bed (3), wherein first main shaft (1) is fixed in lathe bed (3), axially opposed with first main shaft (1) along second main shaft (2) that lathe bed (3) slides, servo power knife rest (6) is fixed in along on the slide plate (5) of saddle (4) X-direction slip.

2, according to described pair of main axle machine tool of claim 1, it is characterized in that: described lathe bed (3) working face and horizontal plane angle are 30～60 °.

3, according to described pair of main axle machine tool of claim 1, it is characterized in that: described servo power knife rest (6), slide plate (5), saddle (4) and two main shaft (1,2) are electrically connected with servomotor respectively.

4, according to described pair of main axle machine tool of claim 1, it is characterized in that: described pair of main shaft (1,2) is the built-in type electric machine main shaft.

5, according to described pair of main axle machine tool of claim 1, it is characterized in that: the bearing (7) of described pair of main shaft (1,2) adopts the spindle bearing structure of ceramic ball bearing and cylinder roller bearing combination.

6, according to described pair of main axle machine tool of claim 1, it is characterized in that: be fixed with the sensor (10) that is electrically connected with digital control system respectively on the described pair of main shaft (1,2) and measure ring (11).

7, according to described pair of main axle machine tool of claim 1, it is characterized in that: described pair of main shaft (1,2) is connected with the brake damping unit respectively.

8, according to described pair of main axle machine tool of claim 7, it is characterized in that: described brake damping unit is the mechanism of brake disc (12) by oil cylinder, piston apparatus braking, brake disc (12) is fixed in main shaft (1) end, brake disc (12) both sides set gradually piston (15), oil cylinder (13) respectively, and back-moving spring (14) links to each other with piston (15).

9, according to described pair of main axle machine tool of claim 8, it is characterized in that: the voltage supply device of described oil cylinder (13) is the hydraulic system of high and low pressure combination.