CN101386078B - Variable-frequency control drill machine - Google Patents
Variable-frequency control drill machine Download PDFInfo
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- CN101386078B CN101386078B CN200810224627XA CN200810224627A CN101386078B CN 101386078 B CN101386078 B CN 101386078B CN 200810224627X A CN200810224627X A CN 200810224627XA CN 200810224627 A CN200810224627 A CN 200810224627A CN 101386078 B CN101386078 B CN 101386078B
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- frequency
- motor
- speed
- variable
- drill machine
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention relates to the drilling machine field and discloses a frequency conversion and speed regulation drilling machine which comprises a motor and a mainshaft; the drilling machine also comprises a frequency conversion and speed regulation system; the frequency conversion and speed regulation system is connected with the motor; the rotation speed of the motor is adjusted by adjusting the frequency of AC which is used for supplying the power for the motor; the drilling machine can precisely adjust the rotation speed of the motor only by rotating a knob when adopting the frequency conversion and speed regulation system; furthermore, the rotation speed is smoothly transitional, the operation is extremely simple and convenient, the time for speed regulation by workers is greatly reduced, and the working efficiency is improved further.
Description
Technical field
The present invention relates to the drilling machine field, particularly relate to a kind of variable-frequency control drill machine.
Background technology
Drilling machine purposes in people's life is very extensive, and particularly in recent years along with the development of the modernization of industry and the raising of people's living standard, factory and enterprise even common family all can use.Drilling machine also develops into the complicated operations requirement of the present various processing requests of suitable people from initial simple functions.But as the core of drilling machine, the transmission gear shift system remains strap speed varying, perhaps advanced a little any mechanical speed change.There are many shortcomings in these speed change systems, cause complicated operation and efficient to reduce.More and more can not adapt to the more and more faster rhythm of life of people.
The present the most general gear shift mode of drilling machine is a strap speed varying both at home and abroad, can only realize the speed change of point-to-point, can not realize level and smooth transition, and speed change all will be adjusted belt with the TO case each time, wastes time and energy, very trouble.The tensioner speed governing of passing through two belt wheels that has can realize level and smooth relatively mechanical speed change effect, but to having relatively high expectations of belt, and mechanical type pressure regulation inaccuracy, inconvenient operation, can not adapt to the flexible and changeable needs of modern society, cause great inconvenience to the user.
Summary of the invention
The purpose of this invention is to provide a kind of drilling machine, a kind of drilling machine of easy and simple to handle, accurate, stepless speed control particularly is provided.
For achieving the above object, technical scheme of the present invention provides a kind of variable-frequency control drill machine, comprise motor, main shaft, described drilling machine also comprises frequency conversion speed-adjusting system, described frequency conversion speed-adjusting system is connected with described motor, the frequency of the alternating current by being adjusted into the power supply of described motor, adjust described motor speed, frequency conversion speed-adjusting system comprises frequency converter and encoder, and described frequency converter is connected with described motor, be used to be adjusted into the ac frequency of described motor power supply, comprise: wave filter, an end is connected with alternating current, and the other end is connected with the power inverting unit by current rectifying and wave filtering circuit, the output output AC electricity of described power inverting unit is for described motor provides power supply; Control module is connected with described power inverting unit, and described power inverting unit is controlled; Power supply is connected with control module with described power inverting unit respectively, is the two power supply, and described encoder connects described control module, is used to set motor speed so that rotating speed seamlessly transits, and it is 3Hz that described frequency converter is regulated minimum of a value to ac frequency.
Wherein, described frequency conversion speed-adjusting system also comprises: transmission mechanism, be connected with described main shaft with the motor shaft of described motor, and be used for the moment of torsion of described motor shaft output is passed to described main shaft.
Wherein, described frequency converter to the adjusting range of ac frequency is: 3Hz～300Hz.
Wherein, described frequency conversion speed-adjusting system comprises speed probe, is connected with described frequency converter, is used to detect the actual speed of described motor, and described actual speed is fed back to described frequency converter.
Wherein, described speed probe is a grating sensor.
Wherein, described frequency conversion speed-adjusting system comprises charactron, is connected with described encoder, is used to show described setting rotating speed.
Wherein, described transmission mechanism comprises small pulley and big belt wheel, and described small pulley is installed on the described motor shaft, and described big belt wheel is installed on the described main shaft, is provided with belt between the described large and small belt wheel.
Wherein, described transmission mechanism comprises two cone pulleys, is installed in respectively on described motor shaft and the main shaft, is provided with belt between the described cone pulley.
Wherein, it is characterized in that described motor is a three phase electric machine.
Technique scheme has following advantage: by adopting frequency conversion speed-adjusting system, only need the rotation knob, can accurately adjust motor speed, and rotating speed seamlessly transits, operate very easyly, greatly reduce the time of workman's speed governing, and then improved operating efficiency.
Description of drawings
Fig. 1 is the structural representation of a kind of variable-frequency control drill machine of the embodiment of the invention;
Fig. 2 is the theory structure schematic diagram of a kind of frequency converter of the embodiment of the invention.
Wherein, 1: base; 2: workbench; 3: motor; 4: small pulley; 5: big belt wheel; 6: panel; 7: charactron.
The specific embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.
In conjunction with Fig. 1, the variable-frequency control drill machine of present embodiment comprises the basic structure of existing drilling machine, as base 1, workbench 2, motor 3 etc., also comprise the frequency conversion speed-adjusting system that is connected with motor 3 in addition, by adjusting the frequency of the alternating current of giving motor 3 power supplies, adjust the rotating speed of motor 3, this frequency conversion speed-adjusting system comprises panel 6, frequency converter, mounting box, charactron 7, speed probe, transmission mechanism.Frequency converter is installed in the mounting box, in mounting box inserts the drilling machine cabinet.Panel 6 is exposed as lid is installed.Panel 6 is provided with the encoder that is connected with frequency converter, when needing to set a rotating speed, rotates the knob of this encoder, and encoder is connected with charactron 7, and charactron 7 is the display setting rotating speed simultaneously, and encoder passes to frequency converter with coding and handles.Alternating current inserts frequency converter, through rectification, and filtering, inversion, and according to the rotating speed coding of setting is converted to alternating current with the corresponding frequency of rotating speed with single-phase alternating current, supplies with motor 3.The motor 3 preferred three phase electric machines that adopt.Speed probe is used to detect the actual speed of motor 3, and the actual speed that records is fed back to frequency converter.Frequency converter and setting rotating ratio are adjusted again, and identical with the setting rotating speed until output speed, speed probe preferably adopts grating sensor.Frequency converter is exported 3 cross streams power supplys, and its frequency range is between 3Hz～300Hz.
Transmission mechanism has two kinds, and a kind of is the one-level deceleration transmission, is fixed with small pulley 4 on the motor shaft, and main shaft (main shaft in the present embodiment is meant the axle that drives the drill bit rotation in the drilling machine) is fixed with big belt wheel 5, two belt wheels and connects by belt.Slow down by belt, make spindle operation steady.Another kind is that the two-stage cone pulley cooperates transmission.Cone pulley all is housed on motor shaft and the main shaft, the same belt transmission that adopts between cone pulley, the user needs to adjust earlier belt position in use, confirms gearratio, can select different no-load voltage ratios for use according to the diameter of cone pulley.Thereby satisfy the requirement of different output torques.
In conjunction with Fig. 2, the frequency converter of present embodiment comprises wave filter, current rectifying and wave filtering circuit, power inverting unit, power supply, control module, wave filter one end is connected with alternating current, the other end is connected with the power inverting unit by current rectifying and wave filtering circuit, the output output AC electricity of power inverting unit is for motor 3 provides power supply.Control module is connected with the power inverting unit, and the power inverting unit is controlled.Power supply is connected with control module with the power inverting unit respectively, is the two power supply.Control module also is connected with encoder on the panel 6, according to the rotating speed coding of encoder input the power inverting unit is controlled.Encoder is connected with charactron 7, is used for the revolution of display setting.In addition, control module also is connected with tachometer generator, is used to detect the actual speed of motor 3, and the information of actual speed correspondence is passed to control module, and control module compares actual speed with setting rotating speed, and then the revolution of motor 3 is adjusted.
When motor 3 is carried out frequency modulation, open switch, alternating current carries out filtering through wave filter, and after current rectifying and wave filtering circuit rectification and filtering, is input to the power inverting unit.The knob of the encoder of turn simultaneously, by observing charactron 7, set the setting rotating speed of motor 3, the information that encoder will be set rotating speed sends to control module, control module by pulse width modulation controlled power inverting unit, makes the alternating current of its output corresponding frequencies according to this information, is motor 3 power supplies, motor 3 starts, to set the rotating speed rotation.But sometimes, the actual speed of motor 3 might not be to set rotating speed, needs to adjust.Speed probe detects the actual speed of motor 3, and the information of actual speed correspondence is passed to control module, and control module compares actual speed with setting rotating speed, and then motor 3 revolutions are adjusted.That is: when actual speed when setting rotating speed, the control module transmitting control information is given the power inverting unit, and its control motor 3 revolutions are reduced, and is identical with the rotating speed of setting until the actual speed of motor 3; If actual speed is when setting rotating speed, the control module transmitting control information is given the power inverting unit, and its control motor 3 revolutions are increased, and is identical with the rotating speed of setting until the actual speed of motor 3.In addition, in order to guarantee the safety of the components and parts in circuit and the circuit, also between alternating current and wave filter, excess voltage protection is set usually.Certainly,, between power inverting unit and motor, also insert the over-current and-load testing circuit, be fit to guarantee the size of current of supplying with motor in order to protect motor.
As can be seen from the above embodiments, the embodiment of the invention only needs the rotation knob by adopting frequency conversion speed-adjusting system, can accurately adjust motor speed, and rotating speed seamlessly transits, operate very easy, greatly reduce the time of workman's speed governing, and then improved operating efficiency.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the technology of the present invention principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. variable-frequency control drill machine, comprise motor, main shaft, described drilling machine also comprises frequency conversion speed-adjusting system, described frequency conversion speed-adjusting system is connected with described motor, the frequency of the alternating current by being adjusted into the power supply of described motor, adjust described motor speed, it is characterized in that frequency conversion speed-adjusting system comprises frequency converter and encoder, described frequency converter is connected with described motor, be used to be adjusted into the ac frequency of described motor power supply, comprise: wave filter, an end is connected with alternating current, and the other end is connected with the power inverting unit by current rectifying and wave filtering circuit, the output output AC electricity of described power inverting unit is for described motor provides power supply; Control module is connected with described power inverting unit, and described power inverting unit is controlled; Power supply is connected with control module with described power inverting unit respectively, is the two power supply, and described encoder connects described control module, is used to set motor speed so that rotating speed seamlessly transits, and it is 3Hz that described frequency converter is regulated minimum of a value to ac frequency.
2. variable-frequency control drill machine as claimed in claim 1 is characterized in that, described frequency conversion speed-adjusting system also comprises:
Transmission mechanism is connected with described main shaft with the motor shaft of described motor, is used for the moment of torsion of described motor shaft output is passed to described main shaft.
3. variable-frequency control drill machine as claimed in claim 1 is characterized in that, described frequency converter to the adjusting range of ac frequency is: 3Hz～300Hz.
4. variable-frequency control drill machine as claimed in claim 1 is characterized in that described frequency conversion speed-adjusting system comprises speed probe, is connected with described frequency converter, is used to detect the actual speed of described motor, and described actual speed is fed back to described frequency converter.
5. variable-frequency control drill machine as claimed in claim 4 is characterized in that, described speed probe is a grating sensor.
6. variable-frequency control drill machine as claimed in claim 1 is characterized in that described frequency conversion speed-adjusting system comprises charactron, is connected with described encoder, is used to show described setting rotating speed.
7. variable-frequency control drill machine as claimed in claim 2, it is characterized in that described transmission mechanism comprises small pulley and big belt wheel, described small pulley is installed on the described motor shaft, described big belt wheel is installed on the described main shaft, is provided with belt between the described large and small belt wheel.
8. variable-frequency control drill machine as claimed in claim 2 is characterized in that, described transmission mechanism comprises two cone pulleys, is installed in respectively on described motor shaft and the main shaft, is provided with belt between the described cone pulley.
9. as each described variable-frequency control drill machine of claim 1～8, it is characterized in that described motor is a three phase electric machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810224627XA CN101386078B (en) | 2008-10-21 | 2008-10-21 | Variable-frequency control drill machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810224627XA CN101386078B (en) | 2008-10-21 | 2008-10-21 | Variable-frequency control drill machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101386078A CN101386078A (en) | 2009-03-18 |
| CN101386078B true CN101386078B (en) | 2010-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810224627XA Expired - Fee Related CN101386078B (en) | 2008-10-21 | 2008-10-21 | Variable-frequency control drill machine |
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| CN (1) | CN101386078B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102151875B (en) * | 2011-03-15 | 2013-04-24 | 长沙一派数控机床有限公司 | Linear servo integrated PCB (Printed Circuit Board) drilling device |
| CN103658750A (en) * | 2012-09-25 | 2014-03-26 | 昆山尚达智机械有限公司 | Novel frequency conversion drilling machine |
| CN107552826A (en) * | 2017-10-18 | 2018-01-09 | 惠州市永晖兴数控科技有限公司 | A kind of numerical control drilling machine |
| CN109759613A (en) * | 2019-03-19 | 2019-05-17 | 江苏海事职业技术学院 | A kind of high-precision drilling machine with frequency control function |
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- 2008-10-21 CN CN200810224627XA patent/CN101386078B/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN101386078A (en) | 2009-03-18 |
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Granted publication date: 20101201 Termination date: 20161021 |