CN102133664B

CN102133664B - Ultrasonic whirling equipment for machining high-precision spiral line

Info

Publication number: CN102133664B
Application number: CN2011100279336A
Authority: CN
Inventors: 赵波; 童景琳; 李瑜; 高国富; 崔峰
Original assignee: Henan University of Technology
Current assignee: Conprofe Technology Group Co Ltd; Smartguy Intelligent Equipment Co Ltd Guangzhou Branch
Priority date: 2011-01-26
Filing date: 2011-01-26
Publication date: 2012-11-28
Anticipated expiration: 2031-01-26
Also published as: CN102133664A

Abstract

The invention discloses ultrasonic whirling equipment for machining a high-precision spiral line. The equipment comprises a circumferential rotation positioning boss, a lower support plate and an upper support plate, wherein the lower support plate is arranged on the circumferential rotation positioning boss; the upper support plate is arranged on the lower support plate and is provided with a motor and an ultrasonic whirling main shaft device; and the power output end of the motor is in transmission connection with the ultrasonic whirling main shaft device. The equipment is adjusted conveniently and flexibly, has high surface precision and cutting efficiency, can complete high-quality thread machining through one-time feeding, can overcome the defect of ordinary cold machining, has the machining efficiency 3-5 times higher than that of an ordinary machining method, is particularly suitable for machining materials such as hard materials, crisp materials and the like which are difficult to machine, remarkably enhances the thread machining quality, has high practicability, and is easy to popularize.

Description

High-precision helix is processed ultrasonic whirlwind and is milled equipment

Technical field

The invention belongs to high-speed and high-efficiency accurate ultra processing technique field, relate in particular to a kind of high-precision helix and process ultrasonic whirlwind and mill equipment.

Background technology

It is advanced practical manufacturing technology that high-precision whirlwind mills process technology, and it is becoming the main flow of cut, has great vitality and wide application prospect.Can realize high-quality, efficient, low consumption, cleaning, pollution-free processing, from super-huge to miniature sizes, from common, the screw thread of crisp material hard, tough and the processing of various complex profile parts to height.But there is following shortcoming in the existing common whirlwind technology of milling: the material removing method has considerable influence to product surface quality; It is to utilize plastic deformation of metal to remove material that common whirlwind mills processing mode; Have the weak point of cold machining mode; Such as damaged surface layer and scorch, and the defective of surface quality such as surface smoothness; The processing mode that common whirlwind mills still belongs to roughing and semi-finished category, has relatively high expectations like accuracy of thread, then needs operations such as in addition grinding or polishing; Because milling cutter carries out high-speed milling, and be cold machining, so the cutting force that whirlwind mills is bigger, the mechanical oscillation of generation are also big, and the rigidity and the dynamic stability of system are had relatively high expectations, and machining accuracy is also had bad influence; For the screw thread processing of hard brittle material, whirlwind mills and has big deficiency, and the surface quality that shows as processing is bad, has big scorch and damaged surface layer; For the screw thread processing of slender piece,,, influence the form accuracy of workpiece so can make workpiece produce distortion because whirlwind is milled with bigger cutting force.

Summary of the invention

The present invention is in order to solve weak point of the prior art, provides a kind of and can process ultrasonic whirlwind at the high-precision helix that whirlwind Milling Process synthesis precision at a high speed and under the high efficiency condition reaches the accurate ultra level of processing and mill equipment.

For solving the problems of the technologies described above; The present invention adopts following technical scheme: high-precision helix is processed ultrasonic whirlwind and is milled equipment; Comprise the upper backup pad that is provided with on the lower supporting plate that is provided with on circumference positioning of rotating boss, the circumference positioning of rotating boss, the lower supporting plate; Upper backup pad is provided with motor and ultrasonic whirlwind mills main shaft device, and the power intake that the clutch end of motor and ultrasonic whirlwind mill main shaft device is in transmission connection.

Said lower supporting plate is provided with twice arc adjustment hole at least, and lower supporting plate is connected with upper backup pad through the adjustment set bolt that is located in the arc adjustment hole.

Said ultrasonic whirlwind mills main shaft device and comprises main spindle box, is connected with the main spindle box rotary seal and the main shaft and the horn of coaxial setting; Main shaft outer end and horn outer end are respectively equipped with and are positioned at main spindle box outer belt pulley and profile milling cutter; This belt pulley is connected through the V-belt with belt pulley on the motor power output shaft; The part of main shaft in main spindle box is the cavity structure of an end opening; Be provided with ultrasonic transducer in the spindle cavity, horn the inner is plugged in the spindle cavity and with ultrasonic transducer and removably connects through stud, and horn and main shaft removably connect through screw; Main spindle box outside portion and inside portion are provided with brush terminal box and brush respectively; The main shaft circumferential side portion is provided with the insulation tank of being processed by insulator; Insulation tank and the radially corresponding setting of brush are provided with the anode and cathode that is rotationally connected with brush in the insulation tank, anode and cathode is connected with ultrasonic transducer through lead.

Adopt technique scheme, have following beneficial effect:

Circumference positioning of rotating boss is fixed on the middle supporting plate of machine tool, workpiece be installed on chuck and top between, with the rotation according to workpiece, the ultrasonic whirlwind of driven by motor mills main shaft device to carry out ultrasonic whirlwind to workpiece and mills and carry out the high speed and precision cutting operation.Ultrasonic machining is a kind of processing method that makes workpiece produce certain controlled vibration clocklike.Ultrasonic machining is the micro cutting process of accomplishing in the short time at a utmost point; Surface damage and residual stress are all less, and do not rely on the electric conductivity of workpiece, and are non-electric machining processes; Not influenced by electricity, the chemical characteristic of workpiece, the especially suitable hard crisp processing that waits difficult-to-machine material.

Through the adjustment fixed position of set bolt in the arc adjustment hole, can adjust the cutting angle between the axis of rotation of rotation and workpiece that ultrasonic whirlwind mills main shaft device, be convenient to process workpiece dissimilar, different size.

During ultrasonic Milling Process; The driven by motor main shaft rotates, main shaft drives profile milling cutter through horn and rotates at a high speed; The high-frequency electrical concussion that supersonic generator produces is passed to ultrasonic transducer through brush terminal box and brush; High-frequency electrical vibration converts the high frequency mechanical oscillation into through ultrasonic transducer, and the amplification through horn is amplified to the processing request that satisfies profile milling cutter with the amplitude of high frequency mechanical oscillation again, thereby makes cutter produce dither.So just under the situation that does not change lathe driving-chain structure, realize the processing of large-scale precision screw thread.

The present invention is easy to adjust, flexible, surface accuracy is high, stock-removing efficiency is high; Can realize the screw thread processing of one-pass completion better quality, can remedy the deficiency of common cold machining processing, working (machining) efficiency is 3～5 times of common process methods; Be particularly useful for the hard crisp processing that waits difficult-to-machine material; Significantly improve the crudy of screw thread, practical, be easy to apply.

Description of drawings

Fig. 1 is the structural representation under the duty of the present invention;

Fig. 2 is the vertical view of Fig. 1;

Fig. 3 is the enlarged drawing at A place in the middle of Fig. 1;

Fig. 4 is the structural representation that ultrasonic whirlwind mills main shaft device in the middle of the present invention.

The specific embodiment

Like Fig. 1～shown in Figure 4; High-precision helix of the present invention is processed ultrasonic whirlwind and is milled equipment; Comprise on circumference positioning of rotating boss 1, the circumference positioning of rotating boss 1 upper backup pad that is the angle steel shape 3 that is provided with on the lower supporting plate 2 that is provided with, the lower supporting plate 2; Upper backup pad 3 is provided with motor 4 and mills main shaft device with ultrasonic whirlwind, and the power intake that the clutch end of motor 4 and ultrasonic whirlwind mill main shaft device is in transmission connection.Lower supporting plate 2 is provided with twice arc adjustment hole 5 at least, and lower supporting plate 2 is connected with upper backup pad 3 through the adjustment set bolt 6 that is located in the arc adjustment hole 5.

Ultrasonic whirlwind mills main shaft device and comprises with lower supporting plate 2 and be cast into the main spindle box 7 of the both ends open of one, be connected with main spindle box 7 rotary seals and the main shaft 8 and the horn 9 of coaxial setting; Be rotationally connected through bearing 10 between main shaft 8 and the main spindle box 7; The nut 11, the nut 41 that are screwed onto on the main shaft 8 compress bearing 10 through sleeve 42; The sleeve 42 outer end caps 44 that removably connect through screw 43 with main spindle box 7 that are provided with; End cap 44 inboards are tightly connected through compressing sealing ring 12; The other end of main spindle box 8 is removably connected with end cap 14 through screw 13; Being rotationally connected through bearing 15 respectively between horn 9 and the end cap 14 and being screwed onto nut 16 on the horn 9 compresses sealing ring 17 and is tightly connected, and main shaft 8 outer ends and horn 9 outer ends are respectively equipped with and are positioned at main spindle box 7 outer belt pulley 18 and profile milling cutter 19, and belt pulley 18 is fixedly connected through the key on the main shaft 8 40; Profile milling cutter 19 is provided with the clamp nut 20 and main shaft 8 and horn 7 coaxial fixed connections that is screwed onto on the horn 9 through the outer end; This belt pulley 18 is connected through V-belt 22 with belt pulley 21 on motor 4 power output shafts, and the part of main shaft 8 in main spindle box 7 is the cavity structure of an end opening, is provided with ultrasonic transducer 24 in main shaft 8 cavitys; Horn 9 the inners are plugged in main shaft 8 cavitys and with ultrasonic transducer 24 and removably connect through stud 25, and horn 9 removably connects through screw 26 with main shaft 8; Main spindle box 7 outside portions and inside portion are provided with brush terminal box 27 and brush 28 respectively; Main shaft 8 circumferential side portion are provided with the insulation tank of being processed by insulator 29 30; Insulation tank 30 and the radially corresponding setting of brush 28; Be provided with the anode and cathode 31 that is rotationally connected with brush 28 in the insulation tank 30, anode and cathode 31 is connected with ultrasonic transducer 24 through lead 32.

When work is used; Lower supporting plate 2 is connected to T type screw 33 and circumference positioning of rotating boss 1 on the middle supporting plate 35 of machine tool 34; Workpiece 36 is installed between chuck 37 and top 38; Ultrasonic whirlwind mills the axis of main shaft device should be parallel with workpiece 36 installation directions, and with the rotation according to workpiece 36, motor 4 drives ultrasonic whirlwind and mills main shaft device workpiece 36 is carried out the high speed and precision cutting operation.Motor 4 drives main shaft 8 rotations, main shaft 8 through horn 9 drive profile milling cutter 19 rotations at a high speed through belt pulley 21, V-belt 22 and belt pulley 18; The high-frequency electrical concussion that supersonic generator produces is passed to ultrasonic transducer 24 through brush terminal box 27 and brush 28; The high-frequency electrical vibration converts the high frequency mechanical oscillation into through ultrasonic transducer 24; Amplification through horn 9 is amplified to the processing request that satisfies profile milling cutter 19 with the amplitude of high frequency mechanical oscillation again; Thereby make profile milling cutter 19 produce dither, carry out ultrasonic whirlwind and mill.So just under the situation that does not change machine tool 34 driving-chain structures, realize the processing of large-scale workpiece 36 accurate threads.

Through the fixed position of adjustment set bolt 6 in arc adjustment hole 5; Can adjust the cutting angle M between main shaft 8 (rotation of profile milling cutter 19) and workpiece 36 axiss of rotation; M is the lead angle of workpiece to be machined 36 screw threads, so also is convenient to process workpiece dissimilar, different size.

Claims

1. high-precision helix is processed ultrasonic whirlwind and is milled equipment; It is characterized in that: comprise the upper backup pad that is provided with on the lower supporting plate that is provided with on circumference positioning of rotating boss, the circumference positioning of rotating boss, the lower supporting plate; Upper backup pad is provided with motor and ultrasonic whirlwind mills main shaft device, and the power intake that the clutch end of motor and ultrasonic whirlwind mill main shaft device is in transmission connection;

Said lower supporting plate is provided with twice arc adjustment hole at least, and lower supporting plate is connected with upper backup pad through the adjustment set bolt that is located in the arc adjustment hole;