CN112643358A - Special equipment, control system and method for finish machining of circular involute type scroll plate - Google Patents
Special equipment, control system and method for finish machining of circular involute type scroll plate Download PDFInfo
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- CN112643358A CN112643358A CN202011513297.3A CN202011513297A CN112643358A CN 112643358 A CN112643358 A CN 112643358A CN 202011513297 A CN202011513297 A CN 202011513297A CN 112643358 A CN112643358 A CN 112643358A
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- guide rail
- screw guide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/017—Arrangements of ways
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
- B23Q5/02—Driving main working members
- B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
- B23Q5/10—Driving main working members rotary shafts, e.g. working-spindles driven essentially by electrical means
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- Engineering & Computer Science (AREA)
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- Milling Processes (AREA)
- Numerical Control (AREA)
Abstract
The invention discloses a special device for finish machining of a circular involute type vortex disc, which comprises a continuous rotating workbench, a rotating workbench motor, an absolute type photoelectric pulse encoder, a base, a vertical support, a Z-axis lifting screw guide rail, a Z-axis motor, an X-axis ball screw guide rail, a Y-axis ball screw guide rail, a bearing frame of the X-axis ball screw guide rail and the Y-axis ball screw guide rail, an X-axis motor, a Y-axis motor, a spindle motor and a spindle cutter, wherein the continuous rotating workbench is arranged on the base, a workpiece is fixed on the continuous rotating workbench, the absolute type photoelectric pulse encoder is connected with a transmission shaft of the continuous rotating workbench, the Z-axis lifting screw guide rail is arranged on the vertical support, the Z-axis motor is connected with a Z-axis screw rod, a slide block on the Z-axis screw rod is connected with the bearing frame, and the bearing frame can move up and down along the, the X-axis ball screw guide rail and the Y-axis ball screw guide rail are both arranged in the bearing frame, the X-axis ball screw guide rail and the Y-axis ball screw guide rail are connected in a cross structure to form a cross guide rail, the spindle motor is connected with the cross guide rail through a sliding block on the cross guide rail, the spindle motor can move in X and Y coordinate directions, and the spindle motor is connected with a cutter.
Description
Technical Field
The invention relates to special equipment, a control system and a method for finish machining of a circular involute type scroll plate, and belongs to the technical field of special numerical control machine tool equipment control.
Background
The scroll compressor is a positive displacement compressor, and the compression part consists of a movable scroll and a fixed scroll. The linear type of the scroll is generally involute of a circle, the static scroll and the dynamic scroll form a compression chamber in the process of meshing, revolving and rotating, the mechanism is firstly provided by a French cuckwire (Leon Creux), but the scroll is not practical at that time due to the reasons of difficult processing of the scroll and the like, and until recently, the scroll compressor is practically applied along with the improvement of the precision of machining equipment.
The scroll compressor has simple structure, small volume and light weight, the volume is 40 percent smaller than the reciprocating type, and the weight is 15 percent light; and because there is no suction valve and exhaust valve, the vulnerable part is few, so the operation reliability of the scroll compressor is high. The scroll compressor can maintain high efficiency and high reliability even at high rotating speed, and the rotating speed can reach 13000 r/min.
Although the scroll compressor has many advantages, the main part of the scroll compressor needs high-precision processing equipment, and the processing is generally carried out in a general precise numerical control processing center at present, so that the processing technology is complex, the processing efficiency is limited, and the universal manufacturing and application of the scroll compressor are limited. The current need can enough satisfy the machining precision, can simplify processing technology again, improves the dedicated vortex dish processing equipment of machining efficiency, just so can further improve the power range that increases scroll compressor, widen its application.
Disclosure of Invention
The invention aims to provide special equipment, a control system and a method for finish machining of a circular involute type scroll plate, and aims to solve the problems that the machining process is complex and the machining efficiency is limited in the prior art.
A special device for finish machining of a circular involute type scroll plate comprises a continuous rotating workbench, a rotating workbench motor, an absolute photoelectric pulse encoder, a base, a vertical support, a Z-axis lifting lead screw guide rail, a Z-axis motor, an X-axis ball lead screw guide rail, a Y-axis ball lead screw guide rail, a bearing frame of the X-axis ball lead screw guide rail and the Y-axis ball lead screw guide rail, an X-axis motor, a Y-axis motor, a spindle motor and a spindle cutter, wherein the continuous rotating workbench is arranged on the base, a workpiece is fixed on the continuous rotating workbench, the absolute photoelectric pulse encoder is connected with a transmission shaft of the continuous rotating workbench, the Z-axis lifting lead screw guide rail is arranged on the vertical support, the Z-axis motor is connected with a Z-axis lead screw, a sliding block on the Z-axis lead screw is connected with the bearing frame, the bearing frame can move up and down along the Z-axis direction, the X-axis ball lead screw guide rail and the Y-axis, the X-axis ball screw guide rail and the Y-axis ball screw guide rail are connected in a cross structure to form a cross guide rail, the spindle motor is connected with the cross guide rail through a sliding block on the cross guide rail and can move in X and Y coordinate directions, and the spindle motor is connected with the cutter.
Preferably, the X-axis motor, the Y-axis motor, the Z-axis motor and the rotary table motor are permanent magnet synchronous alternating current servo motors.
Preferably, the spindle motor is a three-phase asynchronous variable frequency motor.
A control system for a circular involute type scroll finishing dedicated apparatus, the system comprising:
an X-axis servo driver: working in a position control mode, driving an X-axis motor;
y-axis servo driver: working in a position control mode, driving a Y-axis motor;
z-axis servo driver: working in a position control mode, driving a Z-axis motor;
turntable AC servo driver: the rotary worktable motor is driven when the rotary worktable works in a speed control mode;
a main shaft frequency converter: the motor works in a constant power control mode and is used for driving a spindle motor;
absolute photoelectric pulse encoder and signal conversion interface board: the controller module is used for detecting the rotation angle of the rotary worktable in real time and transmitting the rotation angle to the controller module;
a controller module: receiving a processing instruction of a user, sending a speed command signal to an alternating current servo driver of the rotary table, and controlling the workbench to rotate at a constant speed; receiving an output signal of an absolute photoelectric pulse encoder, obtaining a rotation angle of a rotary worktable, obtaining position feeding command signals of an X axis and a Y axis according to the rotation angle, and respectively sending the position feeding command signals to an X axis servo driving module and a Y axis servo driving module; according to the change of the cutting depth in the machining process, a command is sent to a Z-axis servo driving module to control a Z-axis motor to move, and the cutting depth of a cutter is changed; according to the requirements of the processing technology, sending a speed command signal to a main shaft frequency converter, and adjusting the rotating speed of a main shaft motor;
system internal bus: the controller module, the X-axis servo driver, the Y-axis servo driver, the Z-axis servo driver, the main shaft frequency converter, the absolute photoelectric pulse encoder and the like are connected through a system internal bus.
Preferably, the controller module adopts STM32F427 as a processor and comprises a liquid crystal display interface, an operation keypad input interface and a system internal bus interface.
Preferably, the system internal bus is a CANopen bus.
Preferably, the absolute photoelectric pulse outputs a gray code signal, the gray code signal is accessed to a CANopen bus through a signal conversion interface board, and a core processor in the signal conversion interface board is STM32F 103.
A control method of special equipment for finish machining of a circular involute type scroll is characterized by comprising the following steps:
step one, detecting a rotation angle theta (i) | i of the rotary worktable in real time, wherein i is a serial number of a detection and control period, and is 1, 2 and 3 … …;
step two, according to the rotation angle theta (i) and the base radius R of the rotary worktable0The X-axis position p can be calculatedx(i) 1, 2, 3 … …, and Y-axis position pY(i) 1, 2, 3 … …, the calculation formula is as follows:
pX(i)＝(cosθ(i)+θ(i)sinθ(i))R0
pY(i)＝(sinθ(i)-θ(i)cosθ(i))R0
i＝1，2，3……
step three, calculating the position control increment delta p of the X axisX(i) And Y-axis position control increment Δ pY(i) The calculation formula is as follows:
ΔpX(i)＝pX(i)-pX(i-1)
ΔpY(i)＝pY(i)-pY(i-1)
i＝1，2，3……
step four, increasing the position of the X axis by delta pX(i) And Y-axis position increment Δ pY(i) And the position increment control commands are respectively sent to the X-axis servo driver and the Y-axis servo driver as the position increment control commands of the X-axis and the Y-axis at this time.
Furthermore, in order to improve the position control precision of the X axis and the Y axis, a feedforward control function is arranged on an X axis servo driver and a Y axis servo driver, and a feedforward control command of the X axis and a position control increment delta p of the X axis are controlledX(i) Proportional to the feed forward control command for the Y-axis and the position control increment Δ p for the Y-axisY(i) Is in direct proportion.
Compared with the prior art, the invention has the following beneficial effects: the invention realizes the synchronous rotation of the spindles through the servo driving device and the control system of the chenille yarn spindle part, and simultaneously has the functions of smooth speed regulation and yarn breakage and stopping. The technical problems of large number of motors, high heating, low efficiency, low power factor, high noise and energy consumption and real-time speed regulation in the center of the prior art are effectively solved.
Drawings
FIG. 1 is a schematic view of the mechanism of the present invention, wherein (A) is a front view and (B) is a top view;
FIG. 2 is a schematic view of the components of the present invention;
FIG. 3 is a schematic view of a servo drive of the present invention;
FIG. 4 is a functional block diagram of a controller module of the present invention;
fig. 5 is a functional block diagram of the signal conversion interface board of the present invention.
In the figure: 1. a Z-axis motor; 2. a rotary table motor; 3. an X-axis motor; 4. a spindle cutter; 5. rotating the working table; 6. an absolute photoelectric pulse encoder; 7. a vertical support; 8. a base; 9. a Y-axis motor; 10. x-axis and Y-axis ball screw guide rails and a bearing frame; 11. an X-axis ball screw guide; 12. a Z-axis lifting lead screw guide rail; 13. a Y-axis ball screw guide; 14. a spindle motor.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further explained below by combining the attached drawings and the detailed implementation modes.
As shown in the attached drawing 1, the special circular involute type vortex plate finish machining equipment comprises a rotary worktable 5, a rotary worktable motor 2, an absolute photoelectric pulse encoder 6, a base 8, a vertical support 7, a Z-axis lifting screw guide rail 12, a Z-axis motor 1, an X-axis ball screw guide rail 11, a Y-axis ball screw guide rail 13, a bearing frame 10 of the X-axis and Y-axis ball screw guide rails, an X-axis motor 3, a Y-axis motor 9, a spindle motor 14 and a spindle cutter 4. The rotary worktable 5 is arranged on a base 8, a workpiece is fixed on the rotary worktable, an absolute photoelectric pulse encoder 6 is connected with a transmission shaft of the rotary worktable 5, a Z-axis lifting screw guide rail 12 is arranged on a vertical support 7, a Z-axis motor 1 is connected with a Z-axis screw rod 12, a sliding block on the Z-axis screw rod is connected with a bearing frame 10, the bearing frame 10 can move up and down along the Z-axis direction, an X-axis ball screw guide rail 11 and a Y-axis ball screw guide rail 13 are both arranged in the bearing frame 10, the X-axis ball screw guide rail 11 is connected with the Y-axis ball screw guide rail 13 in a cross structure to form a cross guide rail, a spindle motor 14 is connected with the cross guide rail through the sliding block on the cross guide rail and can move in the X and Y coordinate directions, and the spindle motor 14 is connected.
As shown in fig. 3, the control system of the special circular involute type vortex plate finishing equipment comprises:
an X-axis servo driver: the X-axis motor is used for driving the X-axis motor and works in a position control mode; y-axis servo driver: the Y-axis motor is used for driving the Y-axis motor when working in a position control mode; z-axis servo driver: the Z-axis motor is operated in a position control mode and used for driving the Z-axis motor; rotary table ac servo driver: the rotary worktable motor is used for driving the rotary worktable motor to work in a speed control mode; a main shaft frequency converter: the motor works in a constant power control mode and is used for driving a spindle motor; absolute photoelectric pulse encoder and signal conversion interface board: the controller module is used for detecting the rotation angle of the rotary worktable in real time and transmitting the rotation angle to the controller module; a controller module: receiving a processing instruction of a user, sending a speed command signal to an alternating current servo driver of a rotary worktable table, and controlling the worktable to rotate at a constant speed; receiving an output signal of an absolute photoelectric pulse encoder, obtaining a rotation angle of a rotary worktable, obtaining position feeding command signals of an X axis and a Y axis according to the rotation angle, and respectively sending the position feeding command signals to an X axis servo driving module and a Y axis servo driving module; according to the change of the cutting depth in the machining process, a command is sent to a Z-axis servo driving module to control a Z-axis motor to move, and the cutting depth of a cutter is changed; according to the requirements of the processing technology, sending a speed command signal to a main shaft frequency converter, and adjusting the rotating speed of a main shaft motor; the controller module, the X-axis servo driver, the Y-axis servo driver, the Z-axis servo driver, the main shaft frequency converter, the absolute photoelectric pulse encoder and the like are connected through a system internal bus.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (8)
1. A special device for finish machining of a circular involute type scroll plate comprises a continuous rotating workbench, a rotating workbench motor, an absolute photoelectric pulse encoder, a base, a vertical support, a Z-axis lifting lead screw guide rail, a Z-axis motor, an X-axis ball lead screw guide rail, a Y-axis ball lead screw guide rail, a bearing frame of the X-axis ball lead screw guide rail and the Y-axis ball lead screw guide rail, an X-axis motor, a Y-axis motor, a spindle motor and a spindle cutter, wherein the continuous rotating workbench is arranged on the base, a workpiece is fixed on the continuous rotating workbench, the absolute photoelectric pulse encoder is connected with a transmission shaft of the continuous rotating workbench, the Z-axis lifting lead screw guide rail is arranged on the vertical support, the Z-axis motor is connected with a Z-axis lead screw, a sliding block on the Z-axis lead screw is connected with the bearing frame, the bearing frame can move up and down along the Z-axis direction, the X-axis ball lead screw guide rail and the Y-, the X-axis ball screw guide rail and the Y-axis ball screw guide rail are connected in a cross structure to form a cross guide rail, the spindle motor is connected with the cross guide rail through a sliding block on the cross guide rail, the spindle motor can move in the X coordinate direction and the Y coordinate direction, and the spindle motor is connected with a cutter.
2. The special circular involute type vortex plate fine machining equipment according to claim 1, wherein the X-axis motor, the Y-axis motor, the Z-axis motor and the rotary table motor are permanent magnet synchronous alternating current servo motors.
3. The special circular involute type vortex plate finishing equipment according to claim 1, wherein the spindle motor is a three-phase asynchronous variable frequency motor.
4. A control system for a circular involute type scroll finishing dedicated apparatus, the system comprising:
an X-axis servo driver: the X-axis motor is used for driving the X-axis motor and works in a position control mode;
y-axis servo driver: the Y-axis motor is used for driving the Y-axis motor when working in a position control mode;
z-axis servo driver: the Z-axis motor is operated in a position control mode and used for driving the Z-axis motor;
turntable AC servo driver: the motor works in a speed control mode and is used for driving the rotary worktable motor;
a main shaft frequency converter: the motor works in a constant power control mode and is used for driving a spindle motor;
absolute photoelectric pulse encoder and signal conversion interface board: the controller module is used for detecting the rotation angle of the rotary worktable in real time and transmitting the rotation angle to the controller module;
a controller module: receiving a processing instruction of a user, sending a speed command signal to an alternating current servo driver of the rotary table, and controlling the workbench to rotate at a constant speed; receiving an output signal of an absolute photoelectric pulse encoder, obtaining a rotation angle of a rotary worktable, obtaining position feeding command signals of an X axis and a Y axis according to the rotation angle, and respectively sending the position feeding command signals to an X axis servo driving module and a Y axis servo driving module; according to the change of the cutting depth in the machining process, a command is sent to a Z-axis servo driving module to control a Z-axis motor to move, and the cutting depth of a cutter is changed; according to the requirements of the processing technology, sending a speed command signal to a main shaft frequency converter, and adjusting the rotating speed of a main shaft motor;
system internal bus: the controller module, the X-axis servo driver, the Y-axis servo driver, the Z-axis servo driver, the main shaft frequency converter, the absolute photoelectric pulse encoder and the like are connected through a system internal bus.
5. The control system of special circular involute type vortex plate finishing equipment as claimed in claim 4, wherein the controller module adopts STM32F427 as a processor and comprises a liquid crystal display interface, an operation keypad input interface and a system internal bus interface.
6. The control system of special circular involute type vortex plate finishing equipment according to claim 4, wherein the system internal bus is a CANopen bus.
7. A control method of special equipment for finish machining of a circular involute type scroll is characterized by comprising the following steps:
step one, detecting a rotation angle theta (i) | i of the rotary worktable in real time, wherein i is a serial number of a detection and control period, and is 1, 2 and 3 … …;
step two, according to the rotation angle theta (i) and the base radius R of the rotary worktable0Calculating the X-axis position px(i) 1, 2, 3 … …, and Y-axis position pY(i) 1, 2, 3 … …, the calculation formula is as follows:
pX(i)＝(cosθ(i)+θ(i)sinθ(i))R0
pY(i)＝(sinθ(i)-θ(i)cosθ(i))R0
i＝1，2，3……
step three, calculating the position control increment delta p of the X axisX(i) And Y-axis position control increment Δ pY(i) The calculation formula is as follows:
ΔpX(i)＝pX(i)-pX(i-1)
ΔpY(i)＝pY(i)-pY(i-1)
i＝1，2，3……
step four, increasing the position of the X axis by delta pX(i) And Y-axis position increment Δ pY(i) And the position increment control commands respectively used for the X axis and the Y axis are respectively sent to the X axis servo driver and the Y axis servo driver.
8. The method as claimed in claim 7, wherein in order to improve the position control accuracy of the X-axis and the Y-axis, the X-axis servo driver and the Y-axis servo driver are both provided with feedforward control functions, and the feedforward control command of the X-axis and the position control increment Δ p of the X-axis are both provided with feedforward control functionsX(i) Proportional to the feed forward control command for the Y-axis and the position control increment Δ p for the Y-axisY(i) Is in direct proportion.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011513297.3A CN112643358B (en) | 2020-12-18 | 2020-12-18 | Equipment special for finish machining of circular involute type scroll plate and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011513297.3A CN112643358B (en) | 2020-12-18 | 2020-12-18 | Equipment special for finish machining of circular involute type scroll plate and control method |
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| CN112643358B CN112643358B (en) | 2022-09-27 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6094245A (en) * | 1983-10-31 | 1985-05-27 | Mita Ind Co Ltd | Work locating apparatus |
| CN202271173U (en) * | 2011-06-17 | 2012-06-13 | 景绮 | Fixed-beam gantry vertically hanging cross-shaped sliding table device |
| CN102699769A (en) * | 2011-09-21 | 2012-10-03 | 杨东佐 | Numerical control equipment |
| CN108273965A (en) * | 2018-04-27 | 2018-07-13 | 陕西工业职业技术学院 | A kind of sand mold 3D printing model fettling installation |
| CN108436490A (en) * | 2018-05-04 | 2018-08-24 | 吉林大学 | A kind of multifunction supersonic vibration secondary process lathe and its control method |
| CN109591494A (en) * | 2018-11-29 | 2019-04-09 | 颍上县陈家工艺家具有限公司 | A kind of wood carving machine |
-
2020
- 2020-12-18 CN CN202011513297.3A patent/CN112643358B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6094245A (en) * | 1983-10-31 | 1985-05-27 | Mita Ind Co Ltd | Work locating apparatus |
| CN202271173U (en) * | 2011-06-17 | 2012-06-13 | 景绮 | Fixed-beam gantry vertically hanging cross-shaped sliding table device |
| CN102699769A (en) * | 2011-09-21 | 2012-10-03 | 杨东佐 | Numerical control equipment |
| CN108273965A (en) * | 2018-04-27 | 2018-07-13 | 陕西工业职业技术学院 | A kind of sand mold 3D printing model fettling installation |
| CN108436490A (en) * | 2018-05-04 | 2018-08-24 | 吉林大学 | A kind of multifunction supersonic vibration secondary process lathe and its control method |
| CN109591494A (en) * | 2018-11-29 | 2019-04-09 | 颍上县陈家工艺家具有限公司 | A kind of wood carving machine |
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