CN106041601A - Z-axis drive mechanism of numerical control machine tool - Google Patents

Z-axis drive mechanism of numerical control machine tool Download PDF

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Publication number
CN106041601A
CN106041601A CN201610674567.6A CN201610674567A CN106041601A CN 106041601 A CN106041601 A CN 106041601A CN 201610674567 A CN201610674567 A CN 201610674567A CN 106041601 A CN106041601 A CN 106041601A
Authority
CN
China
Prior art keywords
cylinder
counterweight
axis
main tapping
electric magnet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
CN201610674567.6A
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Chinese (zh)
Inventor
张江湖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujian Xinhengyu Mechanical Technology Co Ltd
Original Assignee
Fujian Xinhengyu Mechanical Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujian Xinhengyu Mechanical Technology Co Ltd filed Critical Fujian Xinhengyu Mechanical Technology Co Ltd
Priority to CN201610674567.6A priority Critical patent/CN106041601A/en
Publication of CN106041601A publication Critical patent/CN106041601A/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/001—Arrangements compensating weight or flexion on parts of the machine
    • B23Q11/0017—Arrangements compensating weight or flexion on parts of the machine compensating the weight of vertically moving elements, e.g. by balancing liftable machine parts
    • 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
    • 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
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/32—Feeding working-spindles
    • B23Q5/326—Feeding working-spindles screw-operated

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Units (AREA)

Abstract

The invention provides a Z-axis drive mechanism of a numerical control machine tool. The Z-axis drive mechanism comprises a stand column, a spindle head sliding relative to the stand column in the vertical direction, a spindle rotationally arranged on the spindle head, and a spindle motor driving the spindle to rotate. The stand column is rotationally provided with a Z-axis screw. A sliding block is fixedly arranged on the spindle head and provided with a threaded hole matched with a lifting screw. The Z-axis screw is driven by a Z-axis motor to rotate. A balance weight air cylinder is arranged between the spindle head and the stand column. A cylinder body of the balance weight air cylinder is fixedly connected with the spindle head. A piston rod of the balance weight air cylinder is connected with the stand column through a universal joint. An air storage tank is fixedly arranged on the stand column and communicates with the balance weight air cylinder through a high-pressure air pipe, and a balance weight adjusting mechanism is further arranged between the spindle head and the stand column. The air storage tank is further provided with a coordinating mechanism coordinating the cold and heat temperature difference of air, the machining precision is guaranteed, the load variable quantity of the Z-axis motor is reduced, and the moving speed is increased.

Description

Digit Control Machine Tool Z axis drive mechanism
Technical field
The present invention relates to numerical control machining center, particularly to a kind of Digit Control Machine Tool Z axis drive mechanism.
Background technology
Digital control vertical machining center the most on the market, Z axis counterweight all uses and installs balancing weight additional to reach balancing machine head Portion's weight, reduces Z axis motor load, thus reduces Z axis motor power, but this kind of design exists along with spindle motor power Rocking that when the change balancing weight weight of size cannot be changed at any time, Z axis quickly moves, balancing weight produces can have a strong impact on machine Processing effect, configuration chain the drawback such as can extend after using a period of time.
Summary of the invention
It is an object of the invention to overcome the deficiency of above-mentioned technology, thus provide a kind of numerical control machining center Z axis to drive machine Structure, it is ensured that machining accuracy, reduces Z axis motor load variable quantity, and improves translational speed.
Invention be employed technical scheme comprise that such: Digit Control Machine Tool Z axis drive mechanism, including column, along Vertical Square To with described column mutually slide arrange main tapping, rotate be arranged on described main tapping main shaft, drive described main axis Spindle motor, on described column rotate be provided with Z axis screw rod, described main tapping is fixedly installed slide block, described slide block sets Being equipped with the screwed hole matched with described lifting screw, described Z axis screw rod is driven by Z axis motor and rotates, described main tapping and institute Stating and be provided with counterweight cylinder between column, the cylinder body of described counterweight cylinder is fixedly connected with described main tapping, described counterweight gas The piston rod of cylinder is connected with described column by universal joint, and described column is fixedly installed air accumulator, described air accumulator It is connected by high-pressure air pipe with between described counterweight cylinder；
Being additionally provided with counterweight adjusting mechanism between described main tapping and described column, described counterweight adjusting mechanism includes being fixedly installed The first electric magnet bottom described main tapping, the second electric magnet being fixedly installed on described column, described second electric magnet Being positioned at the underface of described first electric magnet, described first electric magnet and described second electric magnet are like pole, described first Be connected between electric magnet with described second electric magnet and have magnetic force passage, described magnetic force passage enclosed by flexible electrical Magnetic isolation cloth set and Become；
Being additionally provided with the coordination organization coordinating the cold and hot temperature difference of gas on described air accumulator, the tank skin of described air accumulator is double-deck knot Structure, described coordination organization is to be arranged at the phase-change material of intracavity in tank skin.
Improve further: the both sides of described column are fixedly installed linear track, described main tapping is provided with The guide that described linear track matches.
Improve further: offering installation perforation on described main tapping, the cylinder body of described counterweight cylinder is through described Installing perforation, the cylinder base of described counterweight cylinder is fixedly installed cylinder base plate, described cylinder base plate and described main tapping phase Fixing connection.
Improve further: on described column, be fixedly installed counterweight air cylinder support, solid on described counterweight air cylinder support Surely being provided with cylinder supports plate, the piston rod of described counterweight cylinder is connected by described universal joint with described cylinder supports plate Connect.
Improve further: be connected by shaft coupling between described Z axis screw rod with described Z axis motor.
Improve further: the bottom of described air accumulator is provided with drainage ball valve.
Improve further: described built in gas tank is equipped with temperature sensor, and described air accumulator is outside equipped with hollow Homoiothermic cover, the cavity of described homoiothermic cover is connected with hot blast joint and cold wind joint respectively, described hot blast joint and described Being provided with electromagnetic valve on cold wind joint, described temperature sensor is connected with the controller of described electromagnetic valve.
By using preceding solution, the invention has the beneficial effects as follows:
1, when Z axis moves down, the vibroseis that balancing weight produces is eliminated, the cutter that machine did not had punching and produced when lower cutter Trace, it is ensured that the machining accuracy of surface of the work and glossiness；
2, due to main tapping be positioned at extreme higher position and extreme lower position time, owing to the plunger shaft in cylinder changes, it is impossible to reach Gravity to air pressure thrust Yu main tapping remains balance, by arranging counterweight adjusting mechanism, and the i.e. first electric magnet and second The magnetic force that the same sex between electric magnet is repelled each other, together slides up and down along with main tapping due to the first electric magnet, the i.e. first electric magnet And the mutual alignment between the second electric magnet changes along with the motion of main tapping, and magnetic force between the two is change equally , when main tapping is positioned at extreme higher position, gas compression rate is maximum, thus the air pressure thrust produced is maximum, and the first electric magnet Farthest with the distance of the second electric magnet, the magnetic force that both produce is minimum, and when main tapping is positioned at minimum point, gas compression rate is Little, thus the air pressure thrust that produces is minimum, and the first electric magnet and the second electric magnet is closest, both magnetic force of generation are Greatly such that it is able to coordinate counterweight balance and stability；
3, when main tapping weight changes, the magnetic force that can change both by controlling the voltage of electric magnet is adjusted, regulation Convenient；
4, in addition by arranging coordination organization, owing to air pressure is impacted by temperature equally, thus cause Digit Control Machine Tool day and night, During the work of winter in summer, counterweight forces can change equally, by arranging phase-change material, utilizes the performance of its heat storing and heat preserving for coordinating Gas temperature so that gas temperature keeps balance, so that air pressure thrust is free of extraneous thermal effects and change；
5, the speed that Z axis quickly moves is brought up to 48m/min by 20m/min.
Accompanying drawing explanation
Fig. 1 is schematic diagram of the present invention；
Fig. 2 is sectional view at the A-A of Fig. 1.
Wherein: 1, column；2, main tapping；3, Z axis screw rod；4, slide block；5, counterweight cylinder；6, air accumulator；7, high-pressure air pipe； 8, universal joint；9, the first electric magnet；10, the second electric magnet；11, linear track；12, perforation is installed；13, cylinder base plate；14、 Counterweight air cylinder support；15, cylinder supports plate；16, drainage ball valve；17, shaft coupling；18, Z axis motor；19, electromagnetic isolation cloth；20、 Phase-change material.
Detailed description of the invention
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
As shown in Figure 1 and Figure 2, the open a kind of Digit Control Machine Tool Z axis drive mechanism of the present invention, including column 1, along Vertical Square To with described column 1 phase slide arrange main tapping 2, rotate be arranged on described main tapping 2 main shaft, drive described main shaft to turn Dynamic spindle motor, described column 1 rotates and is provided with Z axis screw rod 2, described main tapping 2 is fixedly installed slide block 4, described cunning Being provided with the screwed hole matched with described lifting screw on block 4, described Z axis screw rod 2 is driven rotation by Z axis motor 18, described Being provided with counterweight cylinder 5 between main tapping 2 and described column 1, the cylinder body of described counterweight cylinder 5 fixes with described main tapping 2 Connecting, the piston rod of described counterweight cylinder 5 is connected with described column 1 by universal joint 8, and described column 1 is fixedly installed Having air accumulator 6, be connected by high-pressure air pipe 7 between described air accumulator 6 with described counterweight cylinder 5, described main tapping 2 is with described Being additionally provided with counterweight adjusting mechanism between column 1, described counterweight adjusting mechanism includes being fixedly installed on bottom described main tapping 2 First electric magnet 9, the second electric magnet 10 being fixedly installed on described column 1, described second electric magnet 9 is positioned at described first electricity The underface of Magnet 10, described first electric magnet 9 be like pole with described second electric magnet 10, described first electric magnet 9 and Connecting between described second electric magnet 10 and have magnetic force passage, described magnetic force passage is enclosed to set by flexible electrical Magnetic isolation cloth 19 and forms；Institute Stating and be additionally provided with the coordination organization coordinating the cold and hot temperature difference of gas on air accumulator 6, the tank skin of described air accumulator 6 is double-decker, institute Stating coordination organization is to be arranged at the phase-change material 20 of intracavity in tank skin, and described air accumulator 6 inner air pressure is 0.8mp.
Operation principle: Z axis motor 18 drives Z axis screw rod 2 to rotate, thus band movable slider 4 moves up and down, and then makes main tapping 2 realize the action moved up and down, and have the air pressure of 0.8mpa, through high-pressure air pipe 7, pressure is delivered to counterweight inside air accumulator 6 Cylinder 5 so that it is produce thrust upwards, the gravity of thrust and main tapping 2 is cancelled out each other, and reaches the effect of weight balancing, due to Main tapping 2 is during moving up and down, and main tapping 2 enters due to the piston rod of counterweight cylinder 5 between peak and minimum point Row motion, the volume in counterweight cylinder 5 changes, thus causes thrust to change, it is impossible to arrive constant return, by arranging Counterweight adjusting mechanism, the magnetic force that the same sex between the i.e. first electric magnet 9 and the second electric magnet 10 is repelled each other, due to the first electric magnet 9 Along with main tapping together slides up and down, the mutual alignment between the i.e. first electric magnet 9 and the second electric magnet 10 is along with main tapping 2 Motion and change, and magnetic force between the two is change equally, and when main tapping 2 is positioned at extreme higher position, gas compression rate is Greatly, thus the air pressure thrust produced is maximum, and the distance of the first electric magnet 9 and the second electric magnet 10 is farthest, the magnetic that both produce Power is minimum, and when main tapping 2 is positioned at minimum point, gas compression rate is minimum, thus the air pressure thrust produced is minimum, and the first electromagnetism Ferrum 9 is closest with the second electric magnet 10, and the magnetic force that both produce is maximum such that it is able to coordinate counterweight balance and stability, thus Avoid, due to air pressure change, causing the vibrations that main tapping 2 produces in moving process, when main tapping 2 weight changes, Ke Yitong Cross and control the voltage of electric magnet and change both magnetic force and be adjusted, easy to adjust, in addition by arranging coordination organization, due to gas Temperature equally air pressure is impacted, thus cause Digit Control Machine Tool day and night, the winter in summer work time, counterweight forces can change equally, By arranging phase-change material 20, utilize the performance of its heat storing and heat preserving for coordinating gas temperature so that gas temperature keeps balance, So that air pressure thrust is free of extraneous thermal effects and change.
In order to reduce the main tapping 2 frictional force in moving process, reduce the load of Z axis motor 18, the two of described column 1 Side is fixedly installed linear track 11, and described main tapping 2 is provided with the guide matched with described linear track 11.
Install fixing for convenience, and improve the connective stability between counterweight cylinder 5 and main tapping 2, described main shaft Offering installation perforation 12 on 2, the cylinder body of described counterweight cylinder 5 passes described installation perforation 12, the cylinder of described counterweight cylinder 5 Being fixedly installed cylinder base plate 13 bottom body, described cylinder base plate 13 is fixedly connected with described main tapping 2.
Connect counterweight cylinder 5 for convenience, described column 1 is fixedly installed counterweight air cylinder support 14, described counterweight gas Being fixedly installed cylinder supports plate 15 on jar support 14, the piston rod of described counterweight cylinder 5 passes through with described cylinder supports plate 15 Described universal joint 8 is connected.
The present embodiment is preferred embodiment between described Z axis screw rod 2 and described Z axis motor 18, pass through shaft coupling 17 are connected.
The present embodiment is preferred embodiment the bottom of described air accumulator 6 is provided with drainage ball valve 16.
The ultimate principle of the present invention and principal character and advantage thereof have more than been shown and described, and the technical staff of the industry should This understanding, the present invention is not restricted to the described embodiments, and the simply explanation present invention's described in above-described embodiment and explanation is former Reason, without departing from the spirit and scope of the present invention, the present invention also has various changes and modifications, these changes and improvements Both falling within scope of the claimed invention, claimed scope is by appending claims and equivalent circle thereof Fixed.

Claims (6)

1. Digit Control Machine Tool Z axis drive mechanism, it is characterised in that: include column, vertically slide mutually with described column and set The main tapping put, rotate the main shaft being arranged on described main tapping, the spindle motor driving described main axis, on described column Rotation is provided with Z axis screw rod, and described main tapping is fixedly installed slide block, described slide block is provided with and matches with described lifting screw The screwed hole closed, described Z axis screw rod is driven by Z axis motor and rotates, is provided with counterweight gas between described main tapping and described column Cylinder, the cylinder body of described counterweight cylinder is fixedly connected with described main tapping, and the piston rod of described counterweight cylinder passes through universal joint It is connected with described column, described column is fixedly installed air accumulator, passes through between described air accumulator and described counterweight cylinder High-pressure air pipe is connected；
Being additionally provided with counterweight adjusting mechanism between described main tapping and described column, described counterweight adjusting mechanism includes being fixedly installed The first electric magnet bottom described main tapping, the second electric magnet being fixedly installed on described column, described second electric magnet Being positioned at the underface of described first electric magnet, described first electric magnet and described second electric magnet are like pole, described first Be connected between electric magnet with described second electric magnet and have magnetic force passage, described magnetic force passage enclosed by flexible electrical Magnetic isolation cloth set and Become；
Being additionally provided with the coordination organization coordinating the cold and hot temperature difference of gas on described air accumulator, the tank skin of described air accumulator is double-deck knot Structure, described coordination organization is to be arranged at the phase-change material of intracavity in tank skin.
Digit Control Machine Tool Z axis drive mechanism the most according to claim 1, it is characterised in that: the both sides of described column are fixing to be set It is equipped with linear track, described main tapping is provided with the guide matched with described linear track.
Digit Control Machine Tool Z axis drive mechanism the most according to claim 1, it is characterised in that: offer peace on described main tapping Dress perforation, the cylinder body of described counterweight cylinder is through described installation perforation, and the cylinder base of described counterweight cylinder is fixedly installed gas Cylinder bottom plate, described cylinder base plate is fixedly connected with described main tapping.
Digit Control Machine Tool Z axis drive mechanism the most according to claim 1, it is characterised in that: it is fixedly installed on described column Counterweight air cylinder support, described counterweight air cylinder support is fixedly installed cylinder supports plate, the piston rod of described counterweight cylinder and institute State cylinder supports plate to be connected by described universal joint.
Digit Control Machine Tool Z axis drive mechanism the most according to claim 1, it is characterised in that: described Z axis screw rod and described Z axis It is connected by shaft coupling between motor.
Digit Control Machine Tool Z axis drive mechanism the most according to claim 1, it is characterised in that: the bottom of described air accumulator is arranged There is drainage ball valve.
CN201610674567.6A 2016-08-17 2016-08-17 Z-axis drive mechanism of numerical control machine tool Withdrawn CN106041601A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610674567.6A CN106041601A (en) 2016-08-17 2016-08-17 Z-axis drive mechanism of numerical control machine tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610674567.6A CN106041601A (en) 2016-08-17 2016-08-17 Z-axis drive mechanism of numerical control machine tool

Publications (1)

Publication Number Publication Date
CN106041601A true CN106041601A (en) 2016-10-26

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CN201610674567.6A Withdrawn CN106041601A (en) 2016-08-17 2016-08-17 Z-axis drive mechanism of numerical control machine tool

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107225433A (en) * 2017-07-19 2017-10-03 厦门扬森数控设备有限公司 A kind of vacuum counter weight device
CN107491094A (en) * 2017-07-04 2017-12-19 苏州博众精工科技有限公司 A kind of method of real-time accurate balance Z axis weight

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107491094A (en) * 2017-07-04 2017-12-19 苏州博众精工科技有限公司 A kind of method of real-time accurate balance Z axis weight
CN107225433A (en) * 2017-07-19 2017-10-03 厦门扬森数控设备有限公司 A kind of vacuum counter weight device

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Application publication date: 20161026

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