CN201279698Y

CN201279698Y - Numerical control flat capstan

Info

Publication number: CN201279698Y
Application number: CNU2008201716220U
Authority: CN
Inventors: 韩晓红; 朱德志; 高玉丽; 廖晓金
Original assignee: Jier Machine Tool Group Co Ltd
Current assignee: Jier Machine Tool Group Co Ltd
Priority date: 2008-09-17
Filing date: 2008-09-17
Publication date: 2009-07-29
Anticipated expiration: 2018-09-17

Abstract

The utility model discloses a numerically-controlled facing head comprising a rolling screw pair, a sliding block equipped with a tool holder, a revolving body, an AC servo motor, a rotating device which has the purposes of being connected with a main shaft and a rotating body and transferring rotating force from a main motor to the revolving body, and a transmission device which has the purposes of being connected with the rolling screw pair and the motor shaft of the AC servo motor and converting the rotating force from the AC servo motor to the transverse feeding movement of the sliding block, wherein, the transmission device comprises a belt pulley pair, a worm and worm wheel pair, a planetary wheel system and a bevel gear pair, and the belt pulley pair is connected with the motor shaft of the AC servo motor. As the main motor drives the main shaft to rotate, the revolution of the rotating numerically-controlled facing head can be realized. The facing end face, the excircle, the conical surface, the inner hole, the inner and outer screw, and the like can be cut and processed without rotating a component to be processed. The utility model has the advantages of simple structure, short transmission chain, movement gap reduction and machining precision improvement. Moreover, test results show that the utility model can meet demands of high-end users.

Description

A kind of numerical control facing head

(1) technical field

The utility model relates to Digit Control Machine Tool function accessories technical field, be particularly related to a kind of numerical control facing head, wherein power transmission shaft can be realized mending with other difference of lathe, effectively enlarged the machine tooling ability, and have the high characteristics of machining accuracy, be fit to the processing of complicated casing of manufacturings such as steam turbine, generating set, vertical lathe or cylinder parts.

(2) background technology

Existing numerical control facing head generally adopts mechanisms such as servomotor, worm couple, planetary cross-country power mechanism, bevel gear pair, ball-screw pair to realize the radial feed motion of slide block, the numerical control facing head of this class formation has the following disadvantages: 1. complex structure, 2. appearance and size is bigger than normal, 3. structure is disperseed, and 4. transmission chain length and accumulative total gap cause machining accuracy lower more greatly.

(3) summary of the invention

The utility model wants the technical solution problem to provide a kind of compact conformation, and driving-chain is short, the high numerical control facing head of location cutting precision.

The utility model is realized by following measure: a kind of numerical control facing head, comprise the ball-screw pair, the slide block of knife rest is installed, revolving body, AC servo motor, be used to connect main shaft, rotary body and the whirligig that the revolving force of main motor passed to revolving body be used to be connected the ball-screw pair, the motor shaft of AC servo motor also is converted into the revolving force of AC servo motor the transmission device of the in-movement of slide block, described transmission device comprises the belt wheel set that is in transmission connection successively, worm couple, planet circular system and bevel gear pair, described belt wheel set links to each other with the motor shaft of AC servo motor; Described whirligig comprise with main shaft by the power transmission shaft that has gear that driving key is connected, be sleeved on the power transmission shaft with planet circular system output engagement and the geared sleeve that is fixed as one with the drive bevel gear of bevel gear pair; Described gear and planet circular system engagement; Described power transmission shaft is installed on the revolving body; Leading screw one end of ball-screw pair and the driven wheel of differential of bevel gear pair are fixed together, and the screw of ball-screw pair is installed on the slide block.

The beneficial effects of the utility model:

1. numerical control facing head straight line moves by driven by servomotor, has realized the knife rest in-movement of slide block through belt wheel, belt pair → worm couple → planet circular system → bevel gear pair → lead screw pair transmission; Rotatablely moving is the main motor that rotates by drive shaft, realizes revolution; Make under the non-rotary situation of part to be processed, can realize machining such as face work, cylindrical, the conical surface, endoporus, interior external distance screw thread.

2. simple in structure, driving-chain is short, has reduced movement clearance, has improved machining accuracy, and the endoporus machining accuracy can reach H7, and evidence can be satisfied the requirement of high-end user.

(4) description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is a structural representation of the present utility model.

10 driving keys among the figure, 20 power transmission shafts, 30 gears, 40 driving pulleys, 50 AC servo motors, 60 bodies that are fixedly connected, 70 revolving bodies, 80 knife rests, 90 driven wheels of differential, 100 leading screws, 110 screws, 120 drive bevel gear, 130 duplicate gears, 140 worm screws, 150 worm gears, 160 duplicate gears, 170 planetary gears, 180 driven pulleys, 190 synchronous cog belts, 200 geared sleeves.

(5) specific embodiment

A kind of as shown in Figure 1 numerical control facing head, comprise the ball-screw pair, the slide block of knife rest 80 is installed, revolving body 70, AC servo motor 50, be used to connect main shaft, revolving body 70 and the whirligig that the revolving force of main motor passed to revolving body 70 be used to be connected the ball-screw pair, the motor shaft of AC servo motor 50 also is converted into the revolving force of AC servo motor the transmission device of the in-movement of slide block, described transmission device comprises the belt wheel set that is in transmission connection successively, worm couple, planet circular system and bevel gear pair, described belt wheel set links to each other with the motor shaft of AC servo motor 50; Described whirligig comprise with main shaft by the power transmission shaft that has gear 30 20 that driving key 10 is connected, be sleeved on geared sleeve 200 on the power transmission shaft 20 and planet circular system output engagement and that be fixed as one with the drive bevel gear of bevel gear pair; Described gear 30 and planet circular system engagement; Described power transmission shaft 20 is installed on the revolving body 70; Leading screw one end of ball-screw pair and the driven wheel of differential of bevel gear pair are fixed together, and the screw 110 of ball-screw pair is installed on the slide block.

Transmission device is installed on the body 60 that is fixedly connected during installation, the body 60 that is fixedly connected is installed on the support housing of main shaft, described AC servo motor 50 links to each other with the driving pulley 40 of belt wheel set by axle, driving pulley 40 connects driven pulley 180 by synchronous cog belt 190, described driven pulley 180 is connected with worm couple by axle, connect row duplicate gear 130, duplicate gear 160 and planetary gear 170 by axle on the worm gear 150, the planet circular system output is connected with geared sleeve 200.

Rotatablely moving of revolving body 70 driven by machine tool chief axis during work, drives gear 30 rotations on the power transmission shaft 20 simultaneously, thereby drives planet circular system to the bevel gear cover by the gearratio of 1:1, makes it on bevel gear pure rolling and rotates with revolving body; Slide block move through driven by servomotor driving pulley 40, driven pulley 180, be delivered to worm couple, be delivered to the revolution lead screw pair through planet circular system again, the leading screw rotation, thus realize that peace changes the knife rest feed motion on slide block.

Claims

1. numerical control facing head, comprise the ball-screw pair, the slide block of knife rest is installed, revolving body (70), AC servo motor (50), be used to connect main shaft, revolving body (70) and the whirligig that the revolving force of main motor passed to revolving body (70) be used to be connected the ball-screw pair, the motor shaft of AC servo motor (50) also is converted into the revolving force of AC servo motor (50) transmission device of the in-movement of slide block, it is characterized in that: described transmission device comprises the belt wheel set that is in transmission connection successively, worm couple, planet circular system and bevel gear pair, described belt wheel set links to each other with the motor shaft of AC servo motor (50); Described whirligig comprise with main shaft by the power transmission shaft that has gear (30) (20) that driving key (10) is connected, be sleeved on the power transmission shaft (20) with planet circular system output engagement and the geared sleeve (200) that is fixed as one with the drive bevel gear of bevel gear pair; Described gear (30) and planet circular system engagement; Described power transmission shaft (20) is installed on the revolving body (70); Leading screw one end of ball-screw pair and the driven wheel of differential of bevel gear pair are fixed together, and the screw of ball-screw pair (110) is installed on the slide block.