CN202965240U - Small eccentric crank connecting rod drive mechanism with alterable length of punch pin - Google Patents
Small eccentric crank connecting rod drive mechanism with alterable length of punch pin Download PDFInfo
- Publication number
- CN202965240U CN202965240U CN 201220627280 CN201220627280U CN202965240U CN 202965240 U CN202965240 U CN 202965240U CN 201220627280 CN201220627280 CN 201220627280 CN 201220627280 U CN201220627280 U CN 201220627280U CN 202965240 U CN202965240 U CN 202965240U
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- plunger
- worm gear
- connecting rod
- nut
- sliding
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Abstract
The utility model relates to a numerical control turret punch press servo main punch pin structure, in particular to a small eccentric crank connecting rod drive mechanism with the alterable length of a punch pin in the structure. The small eccentric crank connecting rod drive mechanism with the alterable length of the punch pin comprises a crank shaft and a striking stick. A motor used for driving the crank shaft to rotate is arranged on the end portion of the crank shaft. A connecting rod is arranged on an eccentric section of the crank shaft. A plunger is arranged on the end portion of the connecting rod. Threads are arranged on the outer surface of the middle section of the plunger. The lower section of the plunger is provided with a non-cylindrical body. A nut is arranged on the outer surface of the section, provided with the threads, of the plunger. The nut is connected with the threads of the plunger. A worm gear is arranged on the periphery of the plunger. The worm gear surrounds the plunger and the nut along the axial direction. The small eccentric crank connecting rod drive mechanism with the alterable length of the punch pin is reasonable in design. Due to the fact that the eccentric distance of the main eccentric section of the crank shaft is reduced, the crank shaft can rotate in a complete cycle, and frequent acceleration, deceleration and reversing of the motor are not required for punching processing. Not only are main drive properties and frequency of the punch press improved, but also the motor and the drive are protected, rotational inertia of the drive system can also be reduced, and energy consumption is saved.
Description
Technical field
The utility model relates to the servo main punch structure of a kind of NC turret punch machine, specifically relates to the variable small eccentricity crank linkage driving system of punch length in this kind structure.
Background technology
NC turret punch machine is the nucleus equipment of metallic plate punching processing, can be divided into mechanical type, fluid pressure type, servo main transmission formula according to main transmission mode difference.wherein mechanical type and servo main transmission formula generally adopt crankshaft rod structure, one end of connecting rod is contained in the eccentric part of bent axle, the other end of connecting rod is connected with striking bar, striking bar stroke of the prior art is larger, and do not need so large stroke when some sheet materials of punching press, for this reason, the servomotor main transmission part arranges pre-pressure point punching press, control the rotational angle of bent axle, bent axle swings back and forth in the certain angle scope, motor needs ceaselessly acceleration and deceleration and forward and reverse commutation, reach the high punching press frequency, just need larger acceleration, like this, required immediate current is larger, both unfavorable to motor and driver, also be unfavorable for energy-conservation, in addition because eccentricity of crankshaft is large, cause the rotary inertia of crank connecting link transmission system large, the inertia of the motor that matches own also increases thereupon, this not only makes whole kinematic system energy consumption strengthen, and the dynamic response performance of motor also can reduce, the final processing characteristics that affects punch press.
Summary of the invention
Therefore, the purpose of this utility model is to provide a kind of variable small eccentricity crank linkage driving system of punch length that reduces the eccentric crankshaft eccentric throw, reduces any adjusting in allowed band of rotational inertia of transmission system, punch length.
The purpose of this utility model is to realize like this.
The small eccentricity crank linkage driving system that punch length is variable comprises bent axle and striking bar, and crankshaft end is provided with the motor that drives it and rotate, and the eccentric segment of bent axle is provided with connecting rod.
Described interlinking lever end is provided with plunger, and plunger stage casing outer surface is provided with screw thread, and the plunger hypomere is non-cylinder.
The outer plunger surface that is provided with thread segment is provided with nut, and nut is connected with plunger screw.
The outer worm gear that is arranged with of plunger, worm-wheel shaft is to surrounding plunger and nut.
Be provided with sliding being good between nut and worm gear, sliding being good for is fixedly connected with nut, and corresponding worm gear inner surface is provided with chute at axially spaced-apart, sliding strong outer end is embedded in chute, and can slide up and down along chute, sliding strong axial length is less than chute length, so that the sliding alive mobile space that axially has.
Sliding strong bottom is connected with guide post, rotates to place restrictions on guide post in the body of plunger hypomere non-cylinder coordinates insertion guide post top, and the striking bar top is connected with guide post.
Described worm gear outer surface is provided with the worm screw that drives its rotation.
Technique scheme also can be made to the following further improve.
Described worm gear is arranged with housing outward, and housing shaft is to the parcel worm gear, and top cover is established in the housing upper end, and housing inwardly shrinks in the worm gear bottom and forms a circle step, and the upper surface of step is the terminating point of sliding strong down sliding, and guide post is passed down through housing.
Be provided with guide pin bushing between described guide post and housing.
Described housing is connected with frame.
Described plunger hypomere is the Square-edge cylinder.
The end of described worm screw is provided with the motor that drives its rotation.
The utility model reasonable in design; because the eccentric throw of the main eccentric segment of bent axle reduces; during work; bent axle can be made complete cycle and rotate; need not to rely on frequent acceleration and deceleration, the commutation of motor to carry out punch process; this can not only improve the performance of main transmission and the frequency, protection motor and the driving of punch press, but also can reduce the rotary inertia of transmission system, saves energy consumption.The adjusting of punch length can be regulated arbitrarily in allowed band automatically according to different stamped workpieces thickness, mold height, closed height, the situation such as die change whether, and to improve the automaticity of punch press, design has more hommization.
Description of drawings
Fig. 1 is the structural representation of the present embodiment.
Fig. 2 is the A-A cutaway view.
The specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Embodiment is in conjunction with Fig. 1 and Fig. 2, the small eccentricity crank linkage driving system that punch length is variable comprises bent axle 1, and 1 liang of circumferential end of bent axle is supported on bearing block 10, and at the two ends of the bent axle in bearing block 10 outsides, motor 11 being installed, the eccentric segment 12 of bent axle 1 is provided with connecting rod 2.Bent axle 1 rotates, and connecting rod 2 companions are rotated, thereby realize that connecting rod 2 moves up and down in short transverse.
Described connecting rod 2 ends are provided with plunger 3, and plunger 3 extends at axial direction, lock by pin 20 between plunger 3 tops and connecting rod 2.
Plunger 3 stage casing 31 outer surfaces are provided with screw thread, and plunger 3 hypomeres 32 are the Square-edge cylinder.Plunger 3 outer surfaces that are provided with thread segment are provided with nut 4, and nut 4 is threaded with plunger 3.
The outer worm gear 5 that is arranged with of plunger 3, worm gear 5 axially surrounds plunger 3 and nut 4.The epimere 30 of plunger can move up and down in worm gear 5 bodies with connecting rod 2 actions.
Be provided with sliding strong 6 between nut 4 and worm gear 5, sliding strong 6 are fixedly connected with nut 4, corresponding worm gear 5 inner surfaces are provided with chute 50 at axially spaced-apart, sliding strong 6 outer ends are embedded in chute 50, and can slide up and down along chute 50, sliding strong 6 axial lengths can have mobile space so that slide strong 6 less than chute 50 length axially with connecting rod 2 action the time.
Sliding strong 6 bottom is connected with guide post 7, and plunger 3 hypomeres 32 insert in guide post 7 top bodies and rotate to place restrictions on guide post 7, and guide post 7 moves up and down with sliding strong 6, but when sliding strong 6 rotation, spacing due to plunger 3, and 7 of guide posts do not rotate.Guide post 7 bottoms are connected with striking bar 8, and striking bar 8 moves up and down with guide post 7.
Described worm gear 5 outer surfaces are provided with the worm screw 9 that drives its rotation.The two ends of worm screw 9 are located in bearing.The worm screw end of support outer is provided with the motor that drives its rotation.
The outer housing 100 that is arranged with of described worm gear 5, housing 100 is parcel worm gear 5 axially, top cover 101 is established in housing 100 upper ends, housing 100 inwardly shrinks in the worm gear bottom and forms a circle step 102, the upper surface of step 102 is the terminating point of sliding strong 6 down slidings, guide post 7 is passed down through housing, is provided with guide pin bushing 103 between guide post and housing.Guide post moves in guide pin bushing.
Described housing 100 is connected with frame 104.
Drift strike workflow is as follows: the driven by motor bent axle rotates, and bent axle moves up and down connecting rod, and connecting rod drives plunger and moves up and down, plunger moves up and down the drive nut and moves up and down, nut drives sliding strong moving up and down, and the sliding strong guide post that drives moves up and down, and guide post drives striking bar and moves up and down.
It is as follows that drift promotes workflow: connecting rod is failure to actuate, the worm screw horizontal direction is rotated and is driven the worm gear vertical rotating, when rotating, worm gear drives sliding strong the rotation, sliding strong the rotation drives nut rotation, this moment, sliding strong and nut was realized moving up and down along plunger while rotating because plunger is motionless, and guide post is spacing and can not rotate due to plunger, can only move up and down with sliding strong, nut, thereby regulate the striking bar height.
Claims (6)
1. the variable small eccentricity crank linkage driving system of punch length, comprise bent axle and striking bar, and crankshaft end is provided with the motor that drives it and rotate, and the eccentric segment of bent axle is provided with connecting rod, it is characterized in that:
Described interlinking lever end is provided with plunger, and plunger stage casing outer surface is provided with screw thread, and the plunger hypomere is non-cylinder;
The outer plunger surface that is provided with thread segment is provided with nut, and nut is connected with plunger screw;
The outer worm gear that is arranged with of plunger, worm-wheel shaft is to surrounding plunger and nut;
Be provided with sliding being good between nut and worm gear, sliding being good for is fixedly connected with nut, and corresponding worm gear inner surface is provided with chute at axially spaced-apart, sliding strong outer end is embedded in chute, and can slide up and down along chute, sliding strong axial length is less than chute length, so that the sliding alive mobile space that axially has;
Sliding strong bottom is connected with guide post, and plunger hypomere non-cylinder coordinates to insert in the body of guide post top and rotates to place restrictions on guide post, and the striking bar top is connected with guide post;
Described worm gear outer surface is provided with the worm screw that drives its rotation.
2. the variable small eccentricity crank linkage driving system of punch length according to claim 1, it is characterized in that: described worm gear is arranged with housing outward, housing shaft is to the parcel worm gear, top cover is established in the housing upper end, housing inwardly shrinks in the worm gear bottom and forms a circle step, the upper surface of step is the terminating point of sliding strong down sliding, and guide post is passed down through housing.
3. the variable small eccentricity crank linkage driving system of punch length according to claim 2, is characterized in that: be provided with guide pin bushing between described guide post and housing.
4. the variable small eccentricity crank linkage driving system of punch length according to claim 2, it is characterized in that: described housing is connected with frame.
5. the variable small eccentricity crank linkage driving system of punch length according to claim 1, it is characterized in that: described plunger hypomere is the Square-edge cylinder.
6. the variable small eccentricity crank linkage driving system of punch length according to claim 1, it is characterized in that: the end of described worm screw is provided with the motor that drives its rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627280 CN202965240U (en) | 2012-11-26 | 2012-11-26 | Small eccentric crank connecting rod drive mechanism with alterable length of punch pin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220627280 CN202965240U (en) | 2012-11-26 | 2012-11-26 | Small eccentric crank connecting rod drive mechanism with alterable length of punch pin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202965240U true CN202965240U (en) | 2013-06-05 |
Family
ID=48506364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220627280 Expired - Fee Related CN202965240U (en) | 2012-11-26 | 2012-11-26 | Small eccentric crank connecting rod drive mechanism with alterable length of punch pin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202965240U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950784A (en) * | 2012-11-26 | 2013-03-06 | 广东锻压机床厂有限公司 | Small eccentric crank connecting-rod transmission mechanism with variable length of punching head |
| CN104608415A (en) * | 2015-02-12 | 2015-05-13 | 江苏扬力数控机床有限公司 | Hollow type servo main transmission mechanism used for numerical control turret punch press |
-
2012
- 2012-11-26 CN CN 201220627280 patent/CN202965240U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950784A (en) * | 2012-11-26 | 2013-03-06 | 广东锻压机床厂有限公司 | Small eccentric crank connecting-rod transmission mechanism with variable length of punching head |
| CN102950784B (en) * | 2012-11-26 | 2016-05-04 | 广东锻压机床厂有限公司 | The small eccentricity crank linkage driving system that punch length is variable |
| CN104608415A (en) * | 2015-02-12 | 2015-05-13 | 江苏扬力数控机床有限公司 | Hollow type servo main transmission mechanism used for numerical control turret punch press |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20131126 |