CN202062678U - Eccentric power mechanism and press machine - Google Patents
Eccentric power mechanism and press machine Download PDFInfo
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- CN202062678U CN202062678U CN2011201036996U CN201120103699U CN202062678U CN 202062678 U CN202062678 U CN 202062678U CN 2011201036996 U CN2011201036996 U CN 2011201036996U CN 201120103699 U CN201120103699 U CN 201120103699U CN 202062678 U CN202062678 U CN 202062678U
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- detecting head
- switching value
- driven member
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Abstract
The utility model discloses an eccentric power mechanism and a press machine comprising the eccentric power mechanism. The disclosed eccentric power mechanism comprises a frame body, a driving mechanism, an eccentric component, a follower and a control device; the eccentric component is matched with the follower; the control device comprises a controller used for controlling the driving mechanism and further comprises a switching value probe head and a detection sheet which are used in conjunction with each other; the switching value probe head and the detection sheet are respectively and relatively fixed with the frame body and the follower; a first signal is produced through the switching value probe head according to the position of the detection sheet; and the controller confirms the position of the follower according to the first signal. By adopting the eccentric power mechanism, the position of the follower can be directly detected through an approach switch; furthermore, the position of the follower can be determined according to the a detection signal of the switching value probe head; and thus a control original point of the controller can be determined or amended more conveniently so that the difference between the control original point and the preset original point of the follower can be maintained in the preset range so as to increase the control precision.
Description
Technical field
The utility model relates to a kind of eccentric power mechanism technology, and particularly a kind of eccentric power mechanism also relates to a kind of forcing press that comprises this eccentric power mechanism.
Background technology
Current, eccentric power mechanism is widely used in the various plant equipment, and the air inlet system and exhaust system of engine drive the switching of valve usually with eccentric power mechanism, and forcing press moves back and forth by eccentric power mechanism driving pressure piece usually.
Eccentric power mechanism comprises eccentric stiffener, and eccentric stiffener generally includes eccentric part and driven member.Eccentric part is rotatably installed on the predetermined support body, and eccentric part and driven member are used; Eccentric part can be provided with a curved profile face, and makes driven member and this contoured surface inconsistent, and eccentric stiffener forms cam mechanism; Also can eccentric part be linked to each other with predetermined driven member by connecting rod, eccentric stiffener forms toggle.In the eccentric part rotary course, the curved profile face of eccentric part can drive variation in a predetermined direction the motion of driven member with the curved profile face, perhaps drives driven member by connecting rod and moves back and forth in a predetermined direction.
Current, in order to guarantee the accurate control to the eccentric power mechanism motion, eccentric power mechanism also comprises the control device of control eccentric part motion usually; Control device generally comprises controller and angular sensor; Angular sensor is used to detect the anglec of rotation of eccentric part; In order to keep cooperating of eccentric part and driven member, reduce adverse effect to eccentric part, angular sensor generally links to each other with driving mechanism by suitable transmission mechanism, by the anglec of rotation to the detection acquisition eccentric part of the transmission mechanism anglec of rotation.Controller detects the detection signal that obtains according to predetermined strategy and angular sensor, determines the position of eccentric part; Transmit control signal to driving mechanism according to this position, by the motion of driving mechanisms control eccentric part, and then realization is to the control of driven member motion again.Control device can also be controlled other auxiliary bodies and carry out work in a predetermined manner according to the difference of driven member position, the action of other auxiliary bodies is complementary or corresponding with the action of eccentric stiffener, satisfies actual needs.
In order to determine the eccentric part anglec of rotation, the precalculated position (for convenience, call predetermined initial point in the following text, predetermined initial point can be top dead-centre, bottom dead centre or other precalculated positions point of eccentric part) with eccentric part is a basic point usually.To the control of eccentric part, controller is that the basis produces control signal according to the detection signal of angular sensor, with predetermined point (for convenience, calling the control initial point in the following text), with the motion of control driving mechanism for convenience.
Under control initial point and predetermined initial point overlaps, transmission mechanism is working properly situation, control device can guarantee accurate control that eccentric power mechanism is moved.But, in the working control process, when utilizing angular sensor to detect the anglec of rotation of eccentric part, because it is interrelated between eccentric part, driving mechanism and the angular sensor, when the control initial point of control device is set, need at first disconnect being in transmission connection between angular sensor and the driving mechanism; According to the predetermined origin position of eccentric part, manually adjust angular sensor, make predetermined initial point corresponding with the control initial point of controller; Then, reinstalling angular sensor again makes angular sensor link to each other with driving mechanism; Because reinstalling angular sensor can make angular sensor change, and causes controlling initial point and also changes; Difference between control initial point and predetermined initial point exceeds preset range afterwards the time, also needs once more angular sensor to be adjusted by said process again, and therefore, this mode adjustment process is very loaded down with trivial details.Though can according to actual conditions the control initial point be set by preset suitable program in controller, this has increased the cost and the program complexity of controller undoubtedly; Simultaneously, because angular sensor error accumulation effect, in the eccentric power mechanism running, the difference between control initial point and the predetermined initial point can increase gradually.
Therefore, in the eccentric power mechanism running, how to determine the control initial point of controller easily, it is the technical barrier that those skilled in the art need solve that the difference of controlling between initial point and the predetermined initial point is remained within the predetermined scope.
In addition, when utilizing angular sensor to detect the anglec of rotation of eccentric part, reasons such as vibration equipment or transmission mechanism gap can be disturbed the detection signal of angular sensor, cause angular sensor can not correctly detect the anglec of rotation of eccentric part, and then produce the control initial point and depart from the predetermined excessive phenomenon of initial point; When interference is excessive, also may cause detection signal unusual; Because being the basis with the detection signal, controller determines the control initial point; Controller can produce mistake, and then in a motion cycle, produce the control initial point of 2 or more a plurality of mistakes, and be that control signal is sent on the basis with corresponding control initial point, finally cause the operation irregularity of eccentric power mechanism, and then cause driven member seriously overproof, and then cause the vibration aggravation and miscellaneous part (as the brake disc) enhance faster wear of relevant device; Also may produce harm to equipment and personal safety.Therefore, also there is the deficiency of anti-interference difference in the eccentric power mechanism of prior art.
The utility model content
At above-mentioned technical barrier, first purpose of the present utility model is, a kind of eccentric power mechanism is provided, this eccentric power mechanism comprises control device, utilize this control device can determine the control initial point of controller easily, the difference between the predetermined initial point of controlling initial point and driven member is remained within the predetermined scope.
Second purpose of the present utility model is, a kind of forcing press that comprises above-mentioned eccentric power mechanism is provided.
The eccentric power mechanism that the utility model provides comprises support body, driving mechanism, eccentric part, driven member and control device; Described eccentric part and driven member match, and be installed on the support body, described drive mechanism eccentric part rotation, described control device comprises the controller of controlling driving mechanism, also comprise first switching value detecting head and the detection lug that is used, described first switching value detecting head and described support body relative fixed, described detection lug and described driven member relative fixed; The described first switching value detecting head links to each other with controller.
Optionally, described eccentric power mechanism also comprises the second switch amount detecting head that is used with described detection lug, and described second switch amount detecting head is installed on the described support body, and links to each other with described controller.
Optionally, the described first switching value detecting head is identical with second switch amount detecting head.
Optionally, the described first switching value detecting head and second switch amount detecting head are disposed in order on the described driven member direction of motion.
Optionally, the induction zone of the induction zone of the described first switching value detecting head and second switch amount detecting head partially overlaps at the most.
Optionally, the induction zone of the induction zone of the described first switching value detecting head and second switch amount detecting head partially overlaps.
Optionally, described control device also comprises the relay of the power source that is used to control driving mechanism, and described controller links to each other with relay.
Optionally, described control device also comprises angular sensor, and the rotating part of described angular sensor links to each other with described driving mechanism, and described angular sensor standing part links to each other with support body; The standing part of described angular sensor links to each other with controller.
The forcing press that the utility model provides, comprise the pressure block that body and body are slidingly matched, it is characterized in that, also comprise above-mentioned any eccentric power mechanism, described pressure block and described driven member are fixed, and described support body and described body are fixed, and described driven member is the follower lever that is slidingly matched with support body, described eccentric part links to each other with follower lever by connecting rod, forms toggle; Described follower lever links to each other with pressure block.
Optionally, described eccentric power mechanism comprises two described eccentric parts and two follower levers, forms two toggles.
Compared with prior art, the eccentric power mechanism that the utility model provides directly detects the position of the driven member of eccentric power mechanism by what switching value detecting head and detection lug formed near switch, controller just can be according to the position of directly determining driven member near the detection signal of switch like this, and then in each work period, controller can both determine and the control initial point of Correction and Control device easily, and the difference between the predetermined initial point of the control initial point of controller and driven member is remained within the predetermined scope.In addition, utilize the position of detecting driven member near switch, can utilize functional reliability, improve the control reliability of eccentric power mechanism near switch.Because the switching value detecting head is installed on the body, and then can reduces or avoid because the interference that relevant device vibration or transmission mechanism shake produce eccentric power mechanism.
In further technical scheme, the position that controller is determined driven member according to the rising edge or the trailing edge of the detection signal of switching value detecting head, can determine the position of driven member so more accurately, improve the uniformity between control initial point and the predetermined initial point, the difference between control initial point and the predetermined initial point is remained within the littler preset range.Wherein, preferably determine the position of driven member, can keep the stable and reliable of first signal according to the level of first signal, make controller can utilize the duration of the first signal square wave signal level, determine the position of driven member more reliably, improve the anti-interference of eccentric power mechanism
In further technical scheme, eccentric power mechanism comprises two switching value detecting heads, by the position of two switching value detecting heads detection driven members, can improve the reliability of eccentric power mechanism; In addition, utilize the characteristic of two switching value detecting head detection signals, can be convenient, determine the position of driven member exactly, for controller is determined the position of driven member and the driven member position is controlled prerequisite is provided exactly.
In the forcing press that the utility model provides, also has corresponding technique effect owing to have above-mentioned any eccentric power mechanism.
Description of drawings
Fig. 1 is the structural principle schematic diagram of the forcing press that provides of the utility model;
Fig. 2 is the control principle schematic diagram of control device among Fig. 1;
Fig. 3 is an I-I part structure for amplifying schematic diagram among Fig. 1;
Fig. 4 is a switching value detecting head output signal schematic diagram.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail, the description of this part only is exemplary and explanatory, should any restriction not arranged to protection domain of the present utility model.
Should be noted that: for the convenience of describing, below be example, to eccentric power mechanism and comprise that the forcing press of this eccentric power mechanism is described, describe no longer separately for the forcing press that the utility model provides with the eccentric power mechanism that is applied on the forcing press.
Please refer to Fig. 1, Fig. 2 and Fig. 3, Fig. 1 is the structural principle schematic diagram of the forcing press that provides of the utility model, and Fig. 2 is the control principle schematic diagram of control device among Fig. 1, and Fig. 3 is an I-I part structure for amplifying schematic diagram among Fig. 1.
The forcing press that the utility model provides comprises body 100, pressure block 200 and eccentric power mechanism 300.Pressure block 200 cooperates with body slidably, and can move up and down along the direction of arrow in the diagram.Eccentric power mechanism 300 comprises support body 310, driving mechanism 320, eccentric part 330, driven member 340 and control device 350 (shown in Fig. 2).
Please refer to Fig. 2, in the utility model, control device 350 comprises controller 351, and controller 351 is used to control driving mechanism; In this example, control device 350 also comprises relay 352, and relay 352 is used to control the running of the power source (as motor) of driving mechanism 320; Controller 351 links to each other with relay 352; By relay 352, controller 351 can be controlled the operating condition of driving mechanism 320, realizes the control to eccentric power mechanism.Certainly, control device 350 also can be controlled control to eccentric power mechanism by existing other modes.Control for convenience and setting, control device 350 also comprises human-computer interaction interface device 354, human-computer interaction interface device 354 links to each other with controller 351; In practical operation, operating personnel obtain the motion state of eccentric power mechanism by human-computer interaction interface device 354, and can be by human-computer interaction interface device 354 to controller 351 input control initial point or other relevant parameters; Human-computer interaction interface device 354 can be touch-screen or other input-output equipment.
Please refer to Fig. 3 and Fig. 2, eccentric power mechanism comprises that also the first switching value detecting head 361 that is used and detection lug 362, the first switching value detecting heads 361 and detection lug 362 form first near switch 360.The first switching value detecting head 361 is installed on the body 100, with support body 310 relative fixed; Detection lug 362 is installed on the pressure block 200, and keeps relative fixed with driven member 340.Wherein, the first switching value detecting head 361 links to each other with controller 351.Be appreciated that detection lug 362 can be the parts that are provided with separately, also can form detection lug 362 by applying pressure piece 200 corresponding constructions; Such as, projection or other structures can be set in position form detection lug 362, and make detection lug 362 by within the detection range of the first switching value detecting head 361.
When pressure block 200 moved up and down, detection lug 362 also moved up and down like this; Be positioned at the predetermined detection scope (distance) of the first switching value detecting head 361 or outside the predetermined detection scope time, the first switching value detecting head 361 can produce different detection signals at detection lug 362; For the convenience of describing, the detection signal that the first switching value detecting head 361 is produced and exports is called first signal.Controller 351 can be determined the position of detection lug 362 according to the difference of first signal, and then the position of definite driven member 340 and pressure block 200.Like this, by the position of the first switching value detecting head 361 and detection lug 362 suitably is set, in the time of can making driven member 340 or pressure block 200 be positioned at positions such as top dead-centre, bottom dead centre or other predetermined initial points, make the first switching value detecting head 361 produce the first predetermined signal, make controller 351 again according to determining the control initial point by the first predetermined signal; Like this, since the first switching value detecting head 361 and detection lug 362 respectively with support body 310 and pressure block 200 relative fixed, in each work period of pressure block 200, controller 351 just can produce first signal according to the first switching value detecting head 361 the control initial point is set or revised, and then can determine more easily or the automatic control initial point of Correction and Control device 351, difference between the predetermined initial point of the control initial point of controller 351 and driven member 340 or pressure block 200 is remained within the predetermined scope, improve control accuracy.
In addition, utilize the position of detecting driven member 340 near switch, owing to be installed on the body 100 near the switching value detecting head of switch, and then can reduce better or avoid because the interference that forcing press vibration or transmission mechanism shake produce.Please refer to Fig. 4, this figure is a switching value detecting head output signal schematic diagram.Position according to detection lug 362, first signal that the first switching value detecting head 361 produces is a square wave signal, the detection signal that the width of this detection signal produces much larger than angular sensor (as the zero signal of photoelectric encoder generation) has advantages of higher stability and reliability; Like this, when controller 351 is determined the position of driven member 340 and then is determined the control initial point according to the difference of first signal level, can make full use of square wave signal level longer duration, stability and the higher characteristics of reliability improve the reliability that the control initial point is determined and revised.So just can improve the anti-interference of eccentric power mechanism, improve the reliability of its control.
Certainly, by controller 351 is carried out suitable setting, can make controller 351 determine the position of detection lug 362 and then the position of definite driven member 340 or pressure block 200 according to the correlation properties of first signal.Such as: the position that can make controller 351 determine driven member 340 or pressure block 200 according to the rising edge or the trailing edge of first signal; Can also determine the position of driven member 340 or pressure block 200 in conjunction with the level of first signal and rising edge or trailing edge, or the like.
Please refer to Fig. 2, the convenience of handling for the anglec of rotation that can monitor eccentric part in real time and data, in the utility model, control device 350 also comprises angular sensor 353, and the rotating part of angular sensor 353 and driving mechanism 320 link to each other by transmission mechanism; Certainly, in order accurately to reach the convenience that detects, between the rotating part of angular sensor 353 and the driving mechanism 320 suitable speed change gear can be set, so that the rotating part of angular sensor 353 has suitable rotating speed.The standing part of angular sensor 353 and support body 310 are fixedly linked.Simultaneously, the standing part of angular sensor 353 links to each other with controller 351, and like this, controller 351 can be determined the anglec of rotation of eccentric part according to the detection signal of the generation of angular sensor 353.The operation principle of angular sensor 353 is same as the prior art, does not repeat them here.
The position of pressure block 200 when distinguishing pressure block 200 ascending motions and descending motion, eccentric power mechanism can also comprise the second switch amount detecting head that is used with detection lug 362, and second switch amount detecting head is linked to each other with controller 351.The first switching value detecting head 361 and second switch amount detecting head are installed in position, the first switching value detecting head 361 is disposed in order on the driven member 340 or pressure block 200 directions of motion with second switch amount detecting head, the induction zone of the first switching value detecting head 361 and the induction zone of second switch amount detecting head are partially overlapped at the most, promptly have at least a part not overlap, the induction zone of the first switching value detecting head 361 and the induction zone of second switch amount detecting head are partially overlapped; If second switch amount detection head is a secondary signal according to the detection signal of the position generation of detection lug 362.Controller 351 can be determined the direction of motion of driven member 340 or pressure block 200 in proper order according to the variation of first signal and secondary signal, on the basis of determining the driven member 340 or pressure block 200 directions of motion, accurately determines the position of driven member 340 or pressure block 200.
In order to determine the position of detection lug 362 exactly, can make the trailing edge of the rising edge of first signal and secondary signal synchronous, and then make controller 351 determine the position of driven member 340 according to the trailing edge of the rising edge of first signal and secondary signal; Can also make the rising edge of the rising edge of first signal and secondary signal synchronous, make controller 351 determine the position of driven member 340 according to the rising edge of the rising edge of first signal and secondary signal; Certainly, can also make the trailing edge of the trailing edge of first signal and secondary signal synchronous, and make controller 351 determine the position of driven member 340 according to the trailing edge of the trailing edge of first signal and secondary signal.
Be appreciated that according to foregoing description above-mentioned eccentric power mechanism is not limited to form toggle, also can form cam mechanism.When eccentric engine is configured to cam mechanism, make the predetermined curve contoured surface of driven member and eccentric part inconsistent; During the eccentric part rotation, can make driven member be scheduled to motion according to the variation of predetermined curve contoured surface radius; By detect the position of driven member 340 near switch, also can realize the purpose of this utility model.Certainly, eccentric power mechanism is not limited to be applied in the forcing press, also can be applied in the control to other equipment.
The above only is a preferred implementation of the present utility model; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (10)
1. an eccentric power mechanism comprises support body, driving mechanism, eccentric part, driven member and control device; Described eccentric part and driven member match, and be installed on the support body, described drive mechanism eccentric part rotation, described control device comprises the controller of controlling driving mechanism, it is characterized in that, also comprise first switching value detecting head and the detection lug that is used, described first switching value detecting head and described support body relative fixed, described detection lug and described driven member relative fixed; The described first switching value detecting head links to each other with controller.
2. eccentric power mechanism according to claim 1 is characterized in that, also comprises the second switch amount detecting head that is used with described detection lug, and described second switch amount detecting head is installed on the described support body, and links to each other with described controller.
3. eccentric power mechanism according to claim 2 is characterized in that, the described first switching value detecting head is identical with second switch amount detecting head.
4. eccentric power mechanism according to claim 2 is characterized in that, described first switching value detecting head and second switch amount detecting head are disposed in order on the described driven member direction of motion.
5. eccentric power mechanism according to claim 2 is characterized in that, the induction zone of the induction zone of the described first switching value detecting head and second switch amount detecting head partially overlaps at the most.
6. eccentric power mechanism according to claim 2 is characterized in that, the induction zone of the induction zone of the described first switching value detecting head and second switch amount detecting head partially overlaps.
7. according to each described eccentric power mechanism of claim 1-6, it is characterized in that described control device also comprises the relay of the power source that is used to control driving mechanism, described controller links to each other with relay.
8. according to each described eccentric power mechanism of claim 1-6, it is characterized in that, described control device also comprises angular sensor, and the rotating part of described angular sensor links to each other with described driving mechanism, and described angular sensor standing part links to each other with support body; The standing part of described angular sensor links to each other with controller.
9. forcing press, comprise the pressure block that body and body are slidingly matched, it is characterized in that, also comprise each described eccentric power mechanism of claim 1-8, described pressure block and described driven member are fixed, and described support body and described body are fixed, and described driven member is the follower lever that is slidingly matched with support body, described eccentric part links to each other with follower lever by connecting rod, forms toggle; Described follower lever links to each other with pressure block.
10. forcing press according to claim 9 is characterized in that, described eccentric power mechanism comprises two described eccentric parts and two follower levers, forms two toggles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201036996U CN202062678U (en) | 2011-04-11 | 2011-04-11 | Eccentric power mechanism and press machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201036996U CN202062678U (en) | 2011-04-11 | 2011-04-11 | Eccentric power mechanism and press machine |
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| Publication Number | Publication Date |
|---|---|
| CN202062678U true CN202062678U (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201036996U Expired - Fee Related CN202062678U (en) | 2011-04-11 | 2011-04-11 | Eccentric power mechanism and press machine |
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| Country | Link |
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| CN (1) | CN202062678U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000919A (en) * | 2018-01-22 | 2018-05-08 | 东莞领益精密制造科技有限公司 | Desk-type small electric punch |
-
2011
- 2011-04-11 CN CN2011201036996U patent/CN202062678U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108000919A (en) * | 2018-01-22 | 2018-05-08 | 东莞领益精密制造科技有限公司 | Desk-type small electric punch |
| CN108000919B (en) * | 2018-01-22 | 2024-04-26 | 东莞领益精密制造科技有限公司 | Bench small electric punching machine |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111207 Termination date: 20200411 |
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| CF01 | Termination of patent right due to non-payment of annual fee |