CN103419402B - Method for controlling running of direct drive motor of screw servo press and device for implementing method - Google Patents

Abstract

The invention provides a method for controlling the running of a direct drive motor of a screw servo press. The method comprises the following steps of (1) inputting rotating speed n1 and n2, performing cold and idle impact, and recording corresponding impact force F1 and F2; (2) calculating total rigidity C, and determining friction energy consumption Wmu; (3) placing in a workpiece, inputting rotating speed n, impacting the workpiece, recording impact force F, and calculating the deformation energy Wd of the workpiece; (4) calculating the formation process efficiency eta of the workpiece. A direct drive screw servo press for implementing the method is characterized in that a fixing ring, an inserted shaft, a middle plate and a bracket are additionally arranged, wherein the bracket is arranged at the top end of a press body; the fixing ring is clamped between the bracket and the direct drive motor, and is fixedly connected with the upper end face of the bracket and the bottom of the direct drive motor respectively; the inserted shaft is inserted from the bottom, and is fixedly arranged in an output hole of the direct drive motor; the middle plate is sleeved at the bottom of the inserted shaft through a key, is superposed on the upper end face of an inertia wheel, and is fixedly connected with the inertia wheel.

Description

The control method that screw type servo-pressing machine direct driving motor runs and real active device

Technical field

The invention provides the control method of a kind of screw type servo-pressing machine direct driving motor operation and real active device, belong to forcing press machinery industrial technical field.

Background technology

Existing forming technology mainly adopts hydraulic press, crank press and fly press, the conventional press that forming technology is used, and driven by conventional motors, efficiency comparison is low.Fly press has the versatility that all Alternatives such as Forging Technology and Sheet Metal Forming Technology are suitable for, and more employing high efficiency fly press is shaped and will becomes development trend.Improving process efficiency, improving reliability is forming technology problem demanding prompt solution.

Summary of the invention

The object of the invention is to for above-mentioned existing problems, the control method that the screw type servo-pressing machine direct driving motor providing a kind of reliability high runs and real active device.Its technical scheme is:

The control method that screw type servo-pressing machine direct driving motor runs, is characterized in that adopting following steps: 1) 2 rotating speed n of touch-screen input direct driving motor ₁and n ₂, the cold sky that hits is beaten, and records direct driving motor rotating speed n respectively with tonnage instrument ₁time hitting power F ₁with direct driving motor rotating speed n ₂time hitting power F ₂; 2) by formula calculate global stiffness C, by formula determine friction energy loss W _μ, wherein J is total rotary inertia, ω ₁, ω ₂being respectively direct driving motor rotating speed is n ₁, n ₂time corresponding angular speed; 3) put into workpiece, touch-screen input direct driving motor rotating speed n, hit workpiece, tonnage instrument record hits hitting power F during workpiece, by formula calculate workpiece deformation energy W _d, wherein ω is direct driving motor rotating speed angular speed corresponding when being n, 4) by formula calculate the process efficiency η of component shaping.

A kind of direct-drive type screw type servo-pressing machine realizing said method, comprise cellular type direct driving motor and screw type servo-pressing machine, screw type servo-pressing machine comprises flying wheel, thrust bearing, nut, screw rod, slide block and fuselage, wherein flying wheel is sleeved on screw rod through key, the middle part of screw rod is arranged on fuselage through thrust bearing, the bottom of screw rod is connected with nut screw pair, nut is fixedly connected with slide block, flying wheel, screw rod, nut is coaxial with slide block, it is characterized in that: set up retainer ring, insert axle, telophragma and support, wherein support installing is on the top of fuselage, retainer ring is clamped between support and direct driving motor, and be fixedly connected with the bottom of direct driving motor with the upper surface of support respectively, inserting axle is inserted and secured on the delivery outlet of direct driving motor from bottom, telophragma is sleeved on the bottom of inserting axle through key, and be superimposed upon on the upper surface of flying wheel, telophragma is fixedly connected with flying wheel, and retainer ring, insert axle and telophragma and screw coaxial.

Compared with prior art, its advantage is in the present invention:

1, employing directly drives fly press, and efficiency is high, and reliability is high.

2, by the real-time control of motor movement, ensure to be shaped with most suitable low velocity, ensure high efficiency.

Accompanying drawing explanation

Fig. 1 is the structural representation of the embodiment of the present invention.

In figure: 1, direct driving motor 2, flying wheel 3, thrust bearing 4, nut 5, screw rod 6, slide block 7, fuselage 8, key 9, retainer ring 10, insertion axle 11, telophragma 12, support 13, angular displacement sensor 14, direct driving motor controller 15, tonnage instrument

Detailed description of the invention

Below in conjunction with accompanying drawing, the present invention will be further described.In the embodiment shown in fig. 1: flying wheel 2 is sleeved on screw rod 5 through key 8, the middle part of screw rod 5 is arranged on fuselage 7 through thrust bearing 3, the bottom of screw rod 5 is connected with nut 4 screw pair, and nut 4 is fixedly connected with slide block 6, and flying wheel 2, screw rod 5, nut 4 are coaxial with slide block 6; Support 12 is arranged on the top of fuselage 7, retainer ring 9 is clamped between support 12 and direct driving motor 1, and be fixedly connected with the bottom of direct driving motor 1 with the upper surface of support 12 respectively, inserting axle 10 is inserted and secured on the delivery outlet of direct driving motor 1 from bottom, telophragma 11 is sleeved on the bottom of insertion axle 10 through key 8 and is superimposed upon on the upper surface of flying wheel 2, telophragma 11 is fixedly connected with flying wheel 2, and retainer ring 9, insertion axle 10 and telophragma 11 are coaxial with screw rod 5.

The control that above-mentioned direct-drive type screw type servo-pressing machine direct driving motor 1 runs adopts following steps: 1) 2 rotating speed n of touch-screen input direct driving motor 1 ₁and n ₂, the cold sky that hits is beaten, and records direct driving motor 1 rotating speed n respectively with tonnage instrument ₁time hitting power F ₁with direct driving motor 1 rotating speed n ₂time hitting power F ₂; 2) by formula calculate global stiffness C, by formula determine friction energy loss W _μ, wherein J is total rotary inertia, ω ₁, ω ₂being respectively direct driving motor 1 rotating speed is n ₁, n ₂time corresponding angular speed; 3) put into workpiece, touch-screen input direct driving motor 1 rotating speed n, hit workpiece, tonnage instrument record hits hitting power F during workpiece, by formula calculate workpiece deformation energy W _d, wherein ω is direct driving motor 1 rotating speed angular speed corresponding when being n, 4) by formula calculate the process efficiency η of component shaping, in formula, angular speed and rotating speed obtain corresponding relation and are

In embodiment, 400 tons of forcing presses, total rotary inertia J=200kgm ².

Step 1), touch-screen input 2 rotating speed: n of direct driving motor 1 respectively ₁=130, n ₂=120, namely ${\mathrm{\ω}}_1=\frac{{\mathrm{\πn}}_1}{30}\≈{13.6\mathrm{rads}}^{-1},$ ${\mathrm{\ω}}_2=\frac{{\mathrm{\πn}}_2}{30}\≈{12.6\mathrm{rads}}^{-1},$ The cold sky that hits is beaten, and tonnage instrument record rotating speed is n ₁time hitting power F ₁=4 × 10 ⁶n, rotating speed are n ₂time hitting power F ₂=3.6 × 10 ⁶n;

Step 2), by formula calculate global stiffness C, obtain C=0.6 × 10 ⁹nm ^-1, by formula obtain friction energy loss W _μ=14333J, ω ₁, ω ₂being respectively direct driving motor 1 rotating speed is n ₁, n ₂time corresponding angular speed, ${\mathrm{\ω}}_1=\frac{{\mathrm{\πn}}_1}{30}\≈{13.6\mathrm{rad}.s}^{-1},$ ${\mathrm{\ω}}_2=\frac{{\mathrm{\πn}}_2}{30}\≈{12.6\mathrm{rad}.s}^{-1};$

Step 3), put into workpiece, touch-screen input speed n=200, hit workpiece, tonnage instrument record hits hitting power F=3.9 × 10 during workpiece ⁶n; By formula calculate workpiece deformation energy W _d=12992J, for angular speed corresponding when direct driving motor 1 rotating speed is n;

Step 4), by formula calculate shaping process efficiency η=0.325.Again: touch-screen input speed n=195, hit workpiece, tonnage instrument record hits hitting power F=3.5 × 10 during workpiece ⁶n; By formula calculate workpiece deformation energy W _d=13484J, by formula calculate shaping process efficiency η=0.337.Determine workpiece meet the requirements under prerequisite, controlled by the deceleration of direct driving motor 1 rotating speed, achieve forming efficiency by 0.325 to 0.337 raising.

Claims (2)

1. a control method for screw type servo-pressing machine direct driving motor operation, is characterized in that adopting following steps: 1) 2 rotating speed n of touch-screen input direct driving motor (1) ₁and n ₂, the cold sky that hits is beaten, and records direct driving motor (1) rotating speed n respectively with tonnage instrument ₁time hitting power F ₁with direct driving motor (1) rotating speed n ₂time hitting power F ₂; 2) by formula calculate global stiffness C, by formula determine friction energy loss W _μ, wherein J is total rotary inertia, ω ₁, ω ₂being respectively direct driving motor (1) rotating speed is n ₁, n ₂time corresponding angular speed; 3) put into workpiece, touch-screen input direct driving motor (1) rotating speed n, hit workpiece, tonnage instrument record hits hitting power F during workpiece, by formula calculate workpiece deformation energy W _d, wherein ω is direct driving motor (1) rotating speed angular speed corresponding when being n, 4) by formula calculate the process efficiency η of component shaping.

2. one kind realizes the direct-drive type screw type servo-pressing machine of method described in claim 1, comprise cellular type direct driving motor (1) and screw type servo-pressing machine, screw type servo-pressing machine comprises flying wheel (2), thrust bearing (3), nut (4), screw rod (5), slide block (6) and fuselage (7), wherein flying wheel (2) is sleeved on screw rod (5) through key (8), the middle part of screw rod (5) is arranged on fuselage (7) through thrust bearing (3), the bottom of screw rod (5) is connected with nut (4) screw pair, nut (4) is fixedly connected with slide block (6), flying wheel (2), screw rod (5), nut (4) is coaxial with slide block (6), it is characterized in that: set up retainer ring (9), insert axle (10), telophragma (11) and support (12), its medium-height trestle (12) is arranged on the top of fuselage (7), retainer ring (9) is clamped between support (12) and direct driving motor (1), and be fixedly connected with the bottom of direct driving motor (1) with the upper surface of support (12) respectively, inserting axle (10) is inserted and secured on the delivery outlet of direct driving motor (1) from bottom, telophragma (11) is sleeved on the bottom of inserting axle (10) through key (8), and be superimposed upon on the upper surface of flying wheel (2), telophragma (11) is fixedly connected with flying wheel (2), and retainer ring (9), insert axle (10) and telophragma (11) coaxial with screw rod (5).