CN103252646A - Ultrasonic wave cutting knife constant torque assembly device and method - Google Patents

Ultrasonic wave cutting knife constant torque assembly device and method Download PDF

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Publication number
CN103252646A
CN103252646A CN2013102021987A CN201310202198A CN103252646A CN 103252646 A CN103252646 A CN 103252646A CN 2013102021987 A CN2013102021987 A CN 2013102021987A CN 201310202198 A CN201310202198 A CN 201310202198A CN 103252646 A CN103252646 A CN 103252646A
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CN
China
Prior art keywords
bolt
ball
luffing bar
servomotor
screw
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CN2013102021987A
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Chinese (zh)
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CN103252646B (en
Inventor
张云电
肖健雄
沈莹镔
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杭州电子科技大学
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Priority to CN201310202198.7A priority Critical patent/CN103252646B/en
Publication of CN103252646A publication Critical patent/CN103252646A/en
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Publication of CN103252646B publication Critical patent/CN103252646B/en

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Abstract

The invention discloses an ultrasonic wave cutting knife constant torque assembly device and method. The ultrasonic wave cutting knife constant torque assembly device comprises a drive motor, a coupler, a ball screw, a fixing platform, a standing column, a sliding block, a box body, a torque sensor, an internal hexagonal wrench, a pair of clamping pincers, a clamping air cylinder and an ultrasonic acoustic system. The ultrasonic acoustic system comprises a sandwich-type piezoelectric transducer, an amplitude-change pole, a flange plate and a cutting disc, wherein the amplitude-change pole and the cutting disc are connected through a first bolt, the sandwich-type piezoelectric transducer and the amplitude-change pole are connected through a second bolt, the ultrasonic acoustic system is put into the fixing platform, the flange plate is used for carrying out circumferential location and triggering a touch switch, orders are sent out by a single chip microcomputer to enable the clamping air cylinder to stretch, the neck part of the amplitude-change pile is clamped by the clamping pincers, the internal hexagonal wrench descends to screw up a hex screw, the size of torque is measured by a torque measuring sensor, and when the torque reaches preset torque, the motor stops immediately. The ultrasonic wave cutting knife constant torque assembly device and method is easy to operate, capable of effectively replacing manpower to fix and screw the cutting disc and reducing damage on the amplitude-change pole, and more accurate in value of the torque.

Description

The permanent moment of torsion assembling device of a kind of ultrasonic wave cutter and method

Technical field

The present invention relates to the cutter installing area, relate in particular to the permanent moment of torsion assembling device of a kind of ultrasonic wave cutter and method.

Background technology

The existing process equipment of cellular material has five-axle linkage gantry Machining Center, five-shaft numerical control vertical knee-type milling machine, and the higher six/five planer type numerical control milling machines of ultrasonic wave of machining accuracy are best suited for the process equipment of cellular material.

At home, also do not have ready-made ultrasonic wave CNC milling machine at present, this technology still is in development.The ultrasonic acoustic system is one of core component of numerical control supersonic milling machine, in the ultrasonic acoustic system luffing bar and transducer by bolted together, cutting disc is tightened on the luffing bar by hex bolts.And the method for initially tightening hex bolts is when the ultrasonic acoustic system is in the milling head of five machining centers, finishes by manually tightening.There is following shortcoming in traditional cutter assembling process:

1) the ultrasonic acoustic system is subjected to the torsional moment effect, with main shaft generation relative displacement, destroys the guide rail performance, reduces the milling machine machining accuracy;

2) the luffing bar is to be composited by circular cone luffing bar and horn,stepped, and fixes by the ring flange node place of luffing bar; And compound luffing bar output and nodal distance are very big, similar cantilever beam structures.Therefore, in the process of tightening, the luffing bar is tightened the end distortion that easily twists;

3) if the moment of torsion of tightening is excessive, then easy internal thread to bolt damages, even causes bolt fracture; If the moment of torsion of tightening is too little, then sound system cisco unity malfunction, even cutter and luffing bar break away from;

4) in traditional assembling process, need a people to fix the output of luffing bar at least, a people carries out the work of tightening of bolt, causes complicated operation, occurs deviation easily, easily equipment is caused damage.

Summary of the invention

The present invention is directed to the deficiencies in the prior art, proposed the permanent moment of torsion assembling device of a kind of ultrasonic wave cutter and method.

The permanent moment of torsion assembling device of a kind of ultrasonic wave cutter of the present invention comprises fixed station, first servomotor, shaft coupling, ball-screw, column, rolling bearing, bearing (ball) cover, casing, second servomotor, torque sensor, end cap, inner hexagon spanner, cutting disc, first bolt, gripper clamp, gripper cylinder, sleeve, brace table, the 3rd bolt, hex nut, luffing bar, ring flange, second bolt, sandwich PZT (piezoelectric transducer), supporting seat, the 4th bolt, sliding bearing and slide block;

Described fixed station is the I-shaped structure, and four angles of its lower surface are by four bolting; Fixed station upper table surface center has cylindrical hole, and a side of upper surface has column, and column is fixedlyed connected with fixed station by a bolt that symmetry is installed; Column inside is provided with ball-screw, and the lower end of ball-screw is connected by the output shaft of shaft coupling with first servomotor; Fix by rolling bearing and column in the ball-screw upper end, and the bearing (ball) cover sealing is arranged;

Casing and slide block are affixed, and slide block is arranged on the column, and slide block is connected with ball-screw by ball nut, and are slidingly connected with column; The casing upper end is provided with second servomotor, and the output shaft of second servomotor links to each other with torque sensor by shaft coupling, for detection of the moment size; Torque sensor is connected with die nut by shaft coupling, and casing is by end cap seal.

Be provided with the ultrasonic acoustic system under the inner hexagon spanner, described ultrasonic acoustic system comprises sandwich PZT (piezoelectric transducer), luffing bar, ring flange, cutting disc, first bolt and second bolt; The sandwich PZT (piezoelectric transducer) is fixed on by supporting seat in the cylindrical hole of fixed station, and the output of sandwich PZT (piezoelectric transducer) connects by the input of the second bolt luffing bar; The output of luffing bar is connected with the joint face of cutting disc by first bolt, and is connected with the upper bottom surface of fixed station by ring flange;

Brace table is anchored on plane on the fixed station by the 3rd bolt and hex nut, and is positioned at centered by the luffing bar opposite side corresponding with column.

The 4th bolt passes the centre bore of gripper clamp and the sleeve that is used for supporting gripper clamp, and the two is fixed on the brace table; Sleeve has cascaded surface, and the lower surface diameter is bigger, and there is sliding bearing the hinged place of gripper clamp; At the gripper clamp tail end, gripper cylinder is housed, be used for opening and clamping of gripper clamp.The bare terminal end of gripper clamp is positioned at the outside of luffing bar.

The permanent moment of torsion assembly method of a kind of ultrasonic wave cutter of the present invention, this method may further comprise the steps:

Step 1: the luffing bar links to each other by second bolt with the sandwich PZT (piezoelectric transducer), forms the whole ultrasonic wave sound and learns device;

Step 2: the ultrasonic acoustic device is packed in the deep hole of fixed station middle part; At the deep hole edge two symmetrical salient points are arranged, utilize circumferential notches on the luffing bar node ring flange to locate the circumference angle of ultrasonic acoustic device, and supplemental support and mounting ultrasonic acoustic apparatus are come by supporting seat in the bottom; After inductor is received signal, send signal by PLC, gripper cylinder is shunk, gripper clamp clamps the neck of luffing bar, and gripper clamp is fixed on the brace table by bolt and sleeve;

Step 3: first servomotor rotates, and inner hexagon spanner is fallen in the ball-screw rotation, and second servomotor rotates, and by first bolt cutting disc and luffing bar is tightened; After tightening, moment of torsion rises thereupon, and torque sensor detects moment of torsion and reaches appointment numerical value, sends signal, stops second servomotor, the first private servomotor counter-rotating, and inner hexagon spanner rises.

The beneficial effect that the present invention compared with prior art has:

1) torsion is more accurate, and torque value remains unchanged in the process of tightening;

In the process of 2) tightening, link up, operate the damage of luffing bar rationally, accurately littler;

3) main shaft is installed in the assembling that milling machine is finished cutter before, guarantees machining accuracy;

4) convenient and swift, simple to operate;

5) production cost is low.

Description of drawings

Fig. 1 is the assembly flow charts of the permanent moment of torsion assembling device of ultrasonic wave cutter;

Fig. 2 (a) is the front view of the permanent moment of torsion assembling device of ultrasonic wave cutter;

Fig. 2 (b) is the vertical view of the permanent moment of torsion assembling device of ultrasonic wave cutter;

Fig. 3 is that gripper clamp of the present invention and luffing bar are in the state diagram when clamping.

Among the figure, fixed station 1, first servomotor 2, shaft coupling 3, ball-screw 4, column 5, rolling bearing 6, bearing (ball) cover 7, casing 8, second servomotor 9, torque sensor 10, end cap 11, inner hexagon spanner 12, cutting disc 13, first bolt 14, gripper clamp 15, gripper cylinder 16, sleeve 17, brace table 18, the 3rd bolt 19, hex nut 20, luffing bar 21, ring flange 22, second bolt 23, sandwich PZT (piezoelectric transducer) 24, supporting seat 25, the 4th bolt 26, sliding bearing 27, slide block 28.

The specific embodiment

As Fig. 2 (a), shown in Fig. 2 (b), the permanent moment of torsion assembling device of a kind of ultrasonic wave cutter of the present invention comprises fixed station 1, first servomotor 2, shaft coupling 3, ball-screw 4, column 5, rolling bearing 6, bearing (ball) cover 7, casing 8, second servomotor 9, torque sensor 10, end cap 11, inner hexagon spanner 12, cutting disc 13, first bolt 14, gripper clamp 15, gripper cylinder 16, sleeve 17, brace table 18, the 3rd bolt 19, hex nut 20, luffing bar 21, ring flange 22, second bolt 23, sandwich PZT (piezoelectric transducer) 24, supporting seat 25, the 4th bolt 26, sliding bearing 27 and slide block 28;

Described fixed station 1 is the I-shaped structure, and four angles of its lower surface are by four bolting; Fixed station 1 upper table surface center has cylindrical hole, and a side of upper surface has column 5, and the bolt that column 5 is installed by 4 symmetries is fixedlyed connected with fixed station 1; Column 5 inside are provided with ball-screw 4, and the lower end of ball-screw 4 is connected with the output shaft of first servomotor 2 by shaft coupling 3; Fixing with column 5 by rolling bearing 6 in ball-screw 4 upper ends, and bearing (ball) cover 7 sealings are arranged;

Casing 8 is affixed with slide block 28, and slide block 28 is arranged on the column 5, and slide block 28 is connected with ball-screw 4 by ball nut, and is slidingly connected with column 5; The output shaft that casing 8 upper ends are provided with second servomotor, 9, the second servomotors 9 links to each other with torque sensor 10 by shaft coupling, for detection of the moment size; Torque sensor 10 is connected with die nut 12 by shaft coupling, and casing 8 is by end cap 11 sealings.

Be provided with the ultrasonic acoustic system under the inner hexagon spanner 12, described ultrasonic acoustic system comprises sandwich PZT (piezoelectric transducer) 24, luffing bar 21, ring flange 22, cutting disc 13, first bolt 14 and second bolt 23; Sandwich PZT (piezoelectric transducer) 24 is fixed on by supporting seat 25 in the cylindrical hole of fixed station 1, and the output of sandwich PZT (piezoelectric transducer) 24 is connected with the input of luffing bar 21 by second bolt 23; The output of luffing bar 21 is connected with the joint face of cutting disc 13 by first bolt 14, and is connected with the upper bottom surface of fixed station 1 by ring flange 22;

Brace table 18 is anchored on plane on the fixed station 1 by the 3rd bolt 19 and hex nut 20, and is positioned at centered by luffing bar 21, the opposite side corresponding with column 5;

As shown in Figure 3, the 4th bolt 26 passes the centre bore of gripper clamp 15 and the sleeve 17 that is used for supporting gripper clamp 15, and the two is fixed on the brace table 18; Sleeve 17 has cascaded surface, and the lower surface diameter is bigger, and there is sliding bearing 27 hinged place of gripper clamp; At gripper clamp 15 tail ends, gripper cylinder 16 is housed, be used for opening and clamping of gripper clamp, and by two bolting.The bare terminal end of gripper clamp is positioned at the outside of luffing bar 21.

As shown in Figure 1, luffing bar 21 links to each other by second bolt 23 with sandwich PZT (piezoelectric transducer) 24, forms the whole ultrasonic wave sound and learns device; Secondly, the ultrasonic acoustic device is packed in the fixed station 1 middle part deep hole, supplemental support and mounting ultrasonic acoustic apparatus are come by supporting seat 25 in the bottom; After fixing, inductor is received signal, sends PLC to, and PLC sends signal, and gripper cylinder 16 is shunk, and gripper clamp 15 clamps luffing bar 21, and gripper clamp 15 is fixed on the brace table 18 by the 4th bolt 26 and sleeve 17; Meanwhile, first servomotor 2 rotates, and ball-screw 4 rotations are fallen inner hexagon spanner 12, the second servomotors 9 and rotated, and by first bolt 14 cutting disc 13 and luffing bar 21 are tightened; After tightening, moment of torsion rises thereupon, and torque sensor 10 detects inner hexagon spanner 12 moments of torsion and reaches appointment numerical value, sends signal, stops 2 counter-rotatings of second servomotor, 9, the first servomotors, and inner hexagon spanner 12 rises.

Claims (2)

1. the permanent moment of torsion assembling device of ultrasonic wave cutter comprises fixed station, first servomotor, shaft coupling, ball-screw, column, rolling bearing, bearing (ball) cover, casing, second servomotor, torque sensor, end cap, inner hexagon spanner, cutting disc, first bolt, gripper clamp, gripper cylinder, sleeve, brace table, the 3rd bolt, hex nut, luffing bar, ring flange, second bolt, sandwich PZT (piezoelectric transducer), supporting seat, the 4th bolt, sliding bearing and slide block;
It is characterized in that: described fixed station is the I-shaped structure, and four angles of its lower surface are by four bolting; Fixed station upper table surface center has cylindrical hole, and a side of upper surface has column, and column is fixedlyed connected with fixed station by a bolt that symmetry is installed; Column inside is provided with ball-screw, and the lower end of ball-screw is connected by the output shaft of shaft coupling with first servomotor; Fix by rolling bearing and column in the ball-screw upper end, and the bearing (ball) cover sealing is arranged;
Casing and slide block are affixed, and slide block is arranged on the column, and slide block is connected with ball-screw by ball nut, and are slidingly connected with column; The casing upper end is provided with second servomotor, and the output shaft of second servomotor links to each other with torque sensor by shaft coupling, for detection of the moment size; Torque sensor is connected with die nut by shaft coupling, and casing is by end cap seal;
Be provided with the ultrasonic acoustic system under the inner hexagon spanner, described ultrasonic acoustic system comprises sandwich PZT (piezoelectric transducer), luffing bar, ring flange, cutting disc, first bolt and second bolt; The sandwich PZT (piezoelectric transducer) is fixed on by supporting seat in the cylindrical hole of fixed station, and the output of sandwich PZT (piezoelectric transducer) connects by the input of the second bolt luffing bar; The output of luffing bar is connected with the joint face of cutting disc by first bolt, and is connected with the upper bottom surface of fixed station by ring flange;
Brace table is anchored on plane on the fixed station by the 3rd bolt and hex nut, and is positioned at centered by the luffing bar opposite side corresponding with column;
The 4th bolt passes the centre bore of gripper clamp and the sleeve that is used for supporting gripper clamp, and the two is fixed on the brace table; Sleeve has cascaded surface, and the lower surface diameter is bigger, and there is sliding bearing the hinged place of gripper clamp; At the gripper clamp tail end, gripper cylinder is housed, be used for opening and clamping of gripper clamp; The bare terminal end of gripper clamp is positioned at the outside of luffing bar.
2. the permanent moment of torsion assembly method of ultrasonic wave cutter, this method may further comprise the steps:
Step 1: the luffing bar links to each other by second bolt with the sandwich PZT (piezoelectric transducer), forms the whole ultrasonic wave sound and learns device;
Step 2: the ultrasonic acoustic device is packed in the deep hole of fixed station middle part; At the deep hole edge two symmetrical salient points are arranged, utilize circumferential notches on the luffing bar node ring flange to locate the circumference angle of ultrasonic acoustic device, and supplemental support and mounting ultrasonic acoustic apparatus are come by supporting seat in the bottom; After inductor is received signal, send signal by PLC, gripper cylinder is shunk, gripper clamp clamps the neck of luffing bar, and gripper clamp is fixed on the brace table by bolt and sleeve;
Step 3: first servomotor rotates, and inner hexagon spanner is fallen in the ball-screw rotation, and second servomotor rotates, and by first bolt cutting disc and luffing bar is tightened; After tightening, moment of torsion rises thereupon, and torque sensor detects moment of torsion and reaches appointment numerical value, sends signal, stops second servomotor, the first private servomotor counter-rotating, and inner hexagon spanner rises.
CN201310202198.7A 2013-05-27 2013-05-27 Ultrasonic wave cutting knife constant torque assembly device and method CN103252646B (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128625A (en) * 2014-06-24 2014-11-05 杭州电子科技大学 Automatic ultrasonic cutting tool replacement device and method based on motor drive
CN104526761A (en) * 2014-12-14 2015-04-22 芜湖新宝超声波设备有限公司 Servo drive ultrasonic punching device
CN104924347A (en) * 2015-05-22 2015-09-23 杭州电子科技大学 Ultrasonic cutting adjustment device and cutting method
CN107234446A (en) * 2017-08-09 2017-10-10 东北大学 A kind of ultrasonic vibration cutting work head
CN108381671A (en) * 2018-01-15 2018-08-10 杭州电子科技大学 A kind of ultrasonic cutting electro spindle of hollow servo motor driving
CN108637671A (en) * 2018-05-21 2018-10-12 广州汇专工具有限公司 The assembly technique of ultrasonic wave handle of a knife

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2532187B2 (en) * 1991-11-20 1996-09-11 本田技研工業株式会社 Assembly method of ball screw
US5566436A (en) * 1992-04-14 1996-10-22 Hirata Corporation Method of inserting machine parts into a workpiece
CN201217145Y (en) * 2008-05-30 2009-04-08 比亚迪股份有限公司 Automatic screwing down apparatus
CN101811251A (en) * 2010-05-06 2010-08-25 长春吉扬华欣科技有限责任公司 Automatic assembly equipment for fixed torque bolt of splitting connecting rod
CN202639765U (en) * 2012-05-31 2013-01-02 上海第二工业大学 Axial pre-tightening force control device of gyro main bearing

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2532187B2 (en) * 1991-11-20 1996-09-11 本田技研工業株式会社 Assembly method of ball screw
US5566436A (en) * 1992-04-14 1996-10-22 Hirata Corporation Method of inserting machine parts into a workpiece
CN201217145Y (en) * 2008-05-30 2009-04-08 比亚迪股份有限公司 Automatic screwing down apparatus
CN101811251A (en) * 2010-05-06 2010-08-25 长春吉扬华欣科技有限责任公司 Automatic assembly equipment for fixed torque bolt of splitting connecting rod
CN202639765U (en) * 2012-05-31 2013-01-02 上海第二工业大学 Axial pre-tightening force control device of gyro main bearing

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104128625A (en) * 2014-06-24 2014-11-05 杭州电子科技大学 Automatic ultrasonic cutting tool replacement device and method based on motor drive
CN104128625B (en) * 2014-06-24 2016-12-07 杭州电子科技大学 Based on motor-driven ultrasound wave cutting tool apparatus for automatic change and method
CN104526761A (en) * 2014-12-14 2015-04-22 芜湖新宝超声波设备有限公司 Servo drive ultrasonic punching device
CN104924347A (en) * 2015-05-22 2015-09-23 杭州电子科技大学 Ultrasonic cutting adjustment device and cutting method
CN107234446A (en) * 2017-08-09 2017-10-10 东北大学 A kind of ultrasonic vibration cutting work head
CN108381671A (en) * 2018-01-15 2018-08-10 杭州电子科技大学 A kind of ultrasonic cutting electro spindle of hollow servo motor driving
CN108381671B (en) * 2018-01-15 2019-09-20 杭州电子科技大学 A kind of ultrasonic cutting electro spindle of hollow servo motor driving
CN108637671A (en) * 2018-05-21 2018-10-12 广州汇专工具有限公司 The assembly technique of ultrasonic wave handle of a knife
CN108637671B (en) * 2018-05-21 2019-09-20 汇专绿色工具有限公司 The assembly technique of ultrasonic wave knife handle

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