CN101767471B - Numerically controlled energy-saving servo screw press and method for controlling same - Google Patents

Numerically controlled energy-saving servo screw press and method for controlling same Download PDF

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Publication number
CN101767471B
CN101767471B CN2009102525959A CN200910252595A CN101767471B CN 101767471 B CN101767471 B CN 101767471B CN 2009102525959 A CN2009102525959 A CN 2009102525959A CN 200910252595 A CN200910252595 A CN 200910252595A CN 101767471 B CN101767471 B CN 101767471B
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CN
China
Prior art keywords
switched reluctance
hydraulic
reluctance machines
control
pump
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Expired - Fee Related
Application number
CN2009102525959A
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Chinese (zh)
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CN101767471A (en
Inventor
赵婷婷
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Shandong University of Technology
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Shandong University of Technology
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Priority to CN2009102525959A priority Critical patent/CN101767471B/en
Publication of CN101767471A publication Critical patent/CN101767471A/en
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Publication of CN101767471B publication Critical patent/CN101767471B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The invention belongs to the field of material molding equipment, and in particular relates to a numerically controlled energy-saving screw press and a method for controlling the same. The numerically controlled energy-saving screw press is characterized in that: one side of a screw press body (1) is provided with a regulation sliding plate (5); a motor seat (4) is arranged on the regulation sliding plate and is provided with a switched reluctance motor (3); the lower end of the regulation sliding plate (5) is connected with a piston rod (7) which is controlled to move by a hydraulic control system; the top end of a threaded rod (13) of the screw press is provided with a belt pulley; and an output shaft of the switched reluctance motor (3) is in transmission connection with the threaded rod (13) through a belt (2). The structure is improved directly from a conventional screw press and has convenient operation, high working efficiency and good energy-saving effect.

Description

Numerically controlled energy-saving servo screw press and control method thereof
Technical field
Numerically controlled energy-saving servo screw press and control method thereof belong to field of material molding equipment, are specifically related to a kind of numerically controlled energy-saving servo screw press and control method thereof.
Background technology
The conventional helical forcing press generally adopts screw rod and spiral to pay to cooperate as transmission mechanism, pay the rotation transmission speed through the motor drives spiral, leans on friction pulley to contact left and right sides spiral respectively and pays the realization rotating, moves up and down thereby drive screw rod, hits workpiece.Behind the electric motor starting; Earlier the left side spiral is paid the friction pulley contact, it is descending to drive screw rod, behind the slide block striking work of screw rod lower end; Slide block rebounds owing to elastic deformation naturally; Utilize this bounce in time friction pulley to be paid with the right side spiral and contact, move upward, accomplish one-period work thereby drive screw rod.Conventional helical forcing press motor is an one-way motors, needs to rely on the artificial adjusting left and right sides spiral that promotes to pay friction pulley, and requires to rely on the completion smoothly of certain technical experience, and efficiency is low, and power consumption is big.The patent No. is that the patent of invention of ZL200520125153.5 discloses a kind of fly press that uses switched reluctance machines to drive; Directly driving screw rod through the two-way rotation of switched reluctance machines moves up and down; But because the electric machine stand of this structure is fixedly connected on the fuselage; Make the motor itself of doing main motion can not follow screw motion, therefore when omitting the friction switching-over, must change the basic structure of conventional helical forcing press, can not directly transform the conventional helical forcing press.
Summary of the invention
The technical problem that the present invention will solve is: overcome the deficiency of prior art, provide a kind of structure of modification simple, easy to operate, high efficiency, the numerically controlled energy-saving servo screw press of good energy-conserving effect.
The technical solution adopted for the present invention to solve the technical problems is: this numerically controlled energy-saving servo screw press; Comprise the fly press main body, it is characterized in that: in fly press main body one side the adjustment slide plate is set, electric machine stand is installed on the adjustment slide plate; Switched reluctance machines is installed on the electric machine stand; Adjustment slide plate lower end connects piston rod, and piston rod is through the hydraulic control system controlled motion, and the fly press screw tip is provided with belt pulley; The switched reluctance machines output shaft is connected through belt transmission with screw rod; The controller input of hydraulic control system links to each other with switched reluctance machines, and output links to each other with the pump motor control end with reversal valve, and switched reluctance machines is followed belt pulley and done rectilinear motion.
Hydraulic control system comprises hydraulic cylinder, reversal valve, hydraulic pump, pump motor and controller.
Hydraulic pump is unidirectional hydraulic pump.
A kind of numerically controlled energy-saving servo screw press comprises the fly press main body, in fly press main body one side the adjustment slide plate is set; Electric machine stand is installed on the adjustment slide plate; Switched reluctance machines is installed on the electric machine stand, and adjustment slide plate lower end connects piston rod, and piston rod is through the hydraulic control system controlled motion; The fly press screw tip is provided with belt pulley; The switched reluctance machines output shaft is connected through belt transmission with screw rod, it is characterized in that: hydraulic control system comprises hydraulic cylinder, hydraulic pump, pump motor and controller, and hydraulic pump is the bidirectional hydraulic pump; The controller input of hydraulic control system links to each other with switched reluctance machines, and output links to each other with the pump motor control end.
A kind of control method of claim 1 numerically controlled energy-saving servo screw press is characterized in that: the rotational speed omega e of switched reluctance machines feeds back to controller, the speed of piston rod according to The rotating speed of pump motor according to The formula evaluation, control, wherein, q is the effective discharge of pump, A is the driving area of hydraulic cylinder, h is the screw rod helical pitch, i is the belt transmission ratio, ω eBe the switched reluctance machines rotating speed of main motion, v is a piston rod speed, and n is the pump motor rotating speed.
Compared with prior art; The beneficial effect that numerically controlled energy-saving servo screw press of the present invention had is: through setting up the electric machine stand kinematic system; Overcome motor and can only be fixed on the fuselage, the problem that support can not servo-actuated has realized that the main motion motor follows big belt pulley and do rectilinear motion.Pump motor adopts switch reluctance servo motor, can make the support servo-actuated according to main motion, has realized on conventional helical forcing press basis, directly transforming.Abandoned original friction reversing arrangement, can save energy more than 70%.Can realize to numerical control the control of energy, speed, pressure simultaneously, no longer use manually-operated.
Description of drawings
Fig. 1 is a front view structural representation of the present invention.
Wherein: 1 fly press main body, 2 belts, 3 switched reluctance machines, 4 electric machine stands, 5 adjustment slide plates, 6 guide rails, 7 piston rods, 8 hydraulic cylinders, 9 reversal valves, 10 hydraulic pumps, 11 pump motors, 12 controllers, 13 screw rods.
Fig. 1 is the most preferred embodiment of numerically controlled energy-saving servo screw press of the present invention, and 1 couple of the present invention further specifies below in conjunction with accompanying drawing:
The specific embodiment
Embodiment 1
With reference to accompanying drawing 1:
Numerically controlled energy-saving servo screw press comprises fly press main body 1, belt 2, switched reluctance machines 3, electric machine stand 4, adjustment slide plate 5, guide rail 6, hydraulic control system and screw rod 13.Hydraulic control system comprises hydraulic cylinder 8, reversal valve 9, hydraulic pump 10, pump motor 11 and controller 12, and controller 12 inputs link to each other with switched reluctance machines 3, and output links to each other with pump motor 11 control ends with reversal valve 9.In fly press main body one side adjustment slide plate 5 is set; Electric machine stand 4 is installed on the adjustment slide plate 5, and switched reluctance machines 3 is installed on the electric machine stand 4, and adjustment slide plate 5 lower ends connect piston rod 7; Piston rod 7 is connected with hydraulic cylinder 8; Hydraulic cylinder 8 is through reversal valve 9, hydraulic pump 10 and pump motor 11 control flows, and hydraulic cylinder 8 is fixed on the fly press 1, and hydraulic pump 10 is unidirectional hydraulic pump.Fly press screw rod 13 tops are provided with belt pulley, and switched reluctance machines 3 output shafts and screw rod 13 are in transmission connection through belt 2.
The control method that numerically controlled energy-saving servo screw press adopted is: the rotational speed omega of switched reluctance machines 3 eFeed back to controller 12, the speed of piston rod 7 according to The rotating speed of pump motor 11 according to The formula evaluation control.In the formula, q is the effective discharge of pump, and A is the driving area of hydraulic cylinder, and h is the screw rod helical pitch, and i is the belt transmission ratio, ω eBe the switched reluctance machines rotating speed of main motion, v is a piston rod speed, and n is the pump motor rotating speed.Through this control method, guarantee that the switched reluctance machines 3 and the rise and fall speed of screw rod 13 are consistent, thereby guarantee the smooth transmission of belt 2.
This numerical control servo fly press operation principle and the course of work are following: when down stroke; Switched reluctance machines 3 is just changeing; The epicoele of hydraulic cylinder 8 advances hydraulic oil, and piston rod 7 moves downward in the rotating speed flow-control of pump motor 11, drives electric machine stand 4 and moves downward.During upward stroke, switched reluctance machines 3 counter-rotatings, the cavity of resorption of hydraulic cylinder 9 advances hydraulic oil, and piston rod 7 moves upward in the rotating speed flow-control of pump motor 11, drives electric machine stand 4 and moves upward.
Embodiment 2
Numerically controlled energy-saving servo screw press comprises fly press main body 1, belt 2, switched reluctance machines 3, electric machine stand 4, adjustment slide plate 5, guide rail 6, hydraulic control system and screw rod 13.Hydraulic control system comprises hydraulic cylinder 8, hydraulic pump 10, pump motor 11 and controller 12, and controller 12 inputs link to each other with switched reluctance machines 3, and output links to each other with pump motor 11 control ends.In fly press main body one side adjustment slide plate 5 is set; Electric machine stand 4 is installed on the adjustment slide plate 5, and switched reluctance machines 3 is installed on the electric machine stand 4, and adjustment slide plate 5 lower ends connect piston rod 7; Piston rod 7 is connected with hydraulic cylinder 8; Hydraulic cylinder 8 is through hydraulic pump 10 and pump motor 11 control flows, and hydraulic cylinder 8 is fixed on the fly press 1, and hydraulic pump 10 is the bidirectional hydraulic pump.Fly press screw rod 13 tops are provided with belt pulley, and switched reluctance machines 3 output shafts and screw rod 13 are in transmission connection through belt 2.
The course of work is identical with embodiment 1 with operation principle.
The above; It only is preferred embodiment of the present invention; Be not to be the restriction of the present invention being made other form; For example pump motor can adopt traditional servomotor place of switches reluctance servo motor etc., and any professional and technical personnel of being familiar with possibly utilize the technology contents of above-mentioned announcement to change or be modified as the equivalent embodiment of equivalent variations.But everyly do not break away from technical scheme content of the present invention, to any simple modification, equivalent variations and remodeling that above embodiment did, still belong to the protection domain of technical scheme of the present invention according to technical spirit of the present invention.

Claims (5)

1. numerically controlled energy-saving servo screw press; Comprise fly press main body (1), it is characterized in that: in fly press main body (1) one side adjustment slide plate (5) is set, electric machine stand (4) is installed on the adjustment slide plate (5); Electric machine stand (4) is gone up switched reluctance machines (3) is installed; Adjustment slide plate (5) lower end connects piston rod (7), and piston rod (7) is through the hydraulic control system controlled motion, and fly press screw rod (13) top is provided with belt pulley; Switched reluctance machines (3) output shaft and screw rod (13) are in transmission connection through belt (2); The controller of hydraulic control system (12) input links to each other with switched reluctance machines (3), and output links to each other with pump motor (11) control end with reversal valve (9), and switched reluctance machines (3) is followed belt pulley and done rectilinear motion.
2. numerically controlled energy-saving servo screw press according to claim 1 is characterized in that: hydraulic control system comprises hydraulic cylinder (8), reversal valve (9), hydraulic pump (10), pump motor (11) and controller (12).
3. numerically controlled energy-saving servo screw press according to claim 2 is characterized in that: hydraulic pump (10) is unidirectional hydraulic pump.
4. a numerically controlled energy-saving servo screw press comprises fly press main body (1), in fly press main body (1) one side adjustment slide plate (5) is set; Electric machine stand (4) is installed on the adjustment slide plate (5); Electric machine stand (4) is gone up switched reluctance machines (3) is installed, and adjustment slide plate (5) lower end connects piston rod (7), and piston rod (7) is through the hydraulic control system controlled motion; Fly press screw rod (13) top is provided with belt pulley; Switched reluctance machines (3) output shaft and screw rod (13) are in transmission connection through belt (2), it is characterized in that: hydraulic control system comprises hydraulic cylinder (8), hydraulic pump (10), pump motor (11) and controller (12), and hydraulic pump (10) is the bidirectional hydraulic pump; The controller of hydraulic control system (12) input links to each other with switched reluctance machines (3), and output links to each other with pump motor (11) control end.
5. the control method of claim 1 numerically controlled energy-saving servo screw press is characterized in that: the rotational speed omega of switched reluctance machines (3) eFeed back to controller (12), the speed of piston rod (7) according to The rotating speed of pump motor (11) according to The formula evaluation, control, wherein, q is the effective discharge of pump, A is the driving area of hydraulic cylinder, h is the screw rod helical pitch, i is the belt transmission ratio, ω eBe the switched reluctance machines rotating speed of main motion, v is a piston rod speed, and n is the pump motor rotating speed.
CN2009102525959A 2009-12-24 2009-12-24 Numerically controlled energy-saving servo screw press and method for controlling same Expired - Fee Related CN101767471B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009102525959A CN101767471B (en) 2009-12-24 2009-12-24 Numerically controlled energy-saving servo screw press and method for controlling same

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Application Number Priority Date Filing Date Title
CN2009102525959A CN101767471B (en) 2009-12-24 2009-12-24 Numerically controlled energy-saving servo screw press and method for controlling same

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Publication Number Publication Date
CN101767471A CN101767471A (en) 2010-07-07
CN101767471B true CN101767471B (en) 2012-01-11

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101979242B (en) * 2010-09-13 2012-01-11 山东理工大学 Efficient durable energy-saving numerical control screw press

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