CN105234739B - The heat balance method and system of precise horizontal machining center machine tool guideway frictional heating - Google Patents
The heat balance method and system of precise horizontal machining center machine tool guideway frictional heating Download PDFInfo
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- CN105234739B CN105234739B CN201510730931.1A CN201510730931A CN105234739B CN 105234739 B CN105234739 B CN 105234739B CN 201510730931 A CN201510730931 A CN 201510730931A CN 105234739 B CN105234739 B CN 105234739B
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 10
- 206010037660 Pyrexia Diseases 0.000 claims abstract description 8
- 238000001514 detection method Methods 0.000 claims abstract description 7
- 230000000052 comparative effect Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 abstract description 7
- 238000001816 cooling Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019628 coolness Nutrition 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Classifications
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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
- 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
- B23Q11/0003—Arrangements for preventing undesired thermal effects on tools or parts of the machine
- B23Q11/0007—Arrangements for preventing undesired thermal effects on tools or parts of the machine by compensating occurring thermal dilations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
Abstract
The present invention provides a kind of heat balance method and system of precise horizontal machining center machine tool guideway frictional heating, in lathe bed(1)Bottom increase heating board(9), lathe bed casting cavity body 2 temperature detection sensors of interior increase(10);In column(2)Rear portion increase heating board(11), column casting cavity body 2 temperature detection sensors of interior increase;In slide(4)Rear portion increase heating board(12), slide casting cavity body 2 temperature detection sensors of interior increase.Temperature sensor, heating board and numerical control module(15)It is connected, numerical control module calculates the temperature gap of major structural member cavity inner sensor respectively, and when temperature gap is more than setting value, control heating board heating, when the temperature difference is less than setting value, control heating board does not heat.The present invention can effectively suppress the change of the lathe spatial accuracy of the topology layout caused by guide rail fever, improve the stability of lathe.
Description
Technical field
The present invention relates to the test of lathe thermal Equilibrium Design and control field, lathe is directed to more particularly, to the big part of machine tool basic
Thermal Equilibrium Design, test and the control of rail friction fever.
Background technology
Thermal deformation is one of key factor for causing machine tool accuracy to change.An important factor for being lathe job insecurity.With
The continuous development of machine tool technology, heat affecting of the people to lathe there are more researchs, and begins to take on measure, eliminates as far as possible
The influence for the deformation to lathe that lathe heat source heating tape comes.
In recent years, the design of high precision machine tool, generally considers the thermal balance question of lathe, the method mainly used include with
Under several aspects:
In overall structure, symmetrical structure design method is employed for heat source;
The mode of the hollow interior cooling of leading screw or nut cooling is employed for the rubbing manipulation heat of lead screw pair;
Motor cycle cooling provision is employed for inner electric machine or torque motor;
Circulating cooling measure is employed for crucial bearing.
For external motor pyrotoxin using measures such as isolation coolings.
In practical applications, the heat affecting of assembly of elements is effectively inhibited.
But the fever between the guiding rail joint portion between moving component is but seldom considered.Main reasons is that the
One, it is believed that the fever of guiding rail joint portion is smaller, the good rigidity of the big part of foundation structure, the influence very little to deformation.Second, in guide rail
Between the surface contacted with big structure part, the more difficult increase active cooling measure of relation of structure is typically due to.Asked to solve this
Topic, the producer that foreign countries have punch on basic big part, and by liquid, hydronic mode is cooled down in hole, but this increases
Casting difficulty, while add the weight of lathe.
Actual conditions are, in lathe work, the heat that guideway friction produces is directly transferred on basic big structure part, by
In base structure compared with the component moved over, there is much bigger dimensioned area, therefore, the front-back of big structure part
Between the low temperature difference but cause very big deformation, so as to result in being multiplied for lathe overall space error, cause
When lathe works, with the change of temperature and travel position great variety occurs for lathe space geometry precision.It is attached referring to specification
Figure Fig. 1 and Fig. 2, lathe include lathe bed(1), column(2), X direction guiding rail pairs(3), slide(4), Y-direction guide rail pair(5), main spindle box
(6), workbench(7), Z-direction guideway(8).Column(2)With lathe bed(1)It is fixedly connected, slide(4)Pass through X direction guiding rail pairs(3)
Column(2)Upper side-to-side movement realizes lathe X to movement, main spindle box(6)Pass through Y-direction guide rail pair(5)In slide(4)Upper up and down motion
Realize that lathe Y-direction is moved, workbench(7)Pass through Z-direction guideway(8)In lathe bed(1)On move forward and backward, realize lathe Z-direction move.
Fig. 1 does not work for lathe(When guide rail is cold)State, Fig. 2 for lathe work a period of time after(Because guide pair of machine tool generates heat)Draw
The deformation risen.
It would therefore be highly desirable to simple and convenient effective a, method that can more preferably control the thermal deformation of lathe big structure part is found,
Reach real-time monitoring, in real time control, ensure the balance of lathe entirety thermal deformation.
The content of the invention
The present invention is in order to solve big structure part caused by the fever of horizontal machining center machine rail friction in the prior art
Deform unbalanced problem, there is provided following technical solution:
A kind of heat balance method of precise horizontal machining center machine tool guideway frictional heating, includes the following steps:
Heat generating device is provided opposite in the guide rail mounting surface of machine tool structure big part;
In the cavity of the big part of machine tool structure, distinguish on the opposite of the one side close to guide rail mounting surface and guide rail mounting surface
Set temperature sensor, is respectively used to detect the temperature close to the one side of guide rail mounting surface and the opposite of guide rail mounting surface;
Calculate close to guide rail mounting surface one side and guide rail mounting surface opposite between the temperature difference, and with it is set in advance
Temperature difference is compared, and controls whether heat generating device heats according to comparative result.
Further, when the temperature difference between the opposite of the one side close to guide rail mounting surface and guide rail mounting surface is more than in advance
During the temperature difference of setting, control heat generating device heating;When the opposite of the one side close to guide rail mounting surface and guide rail mounting surface it
Between temperature difference when being less than temperature difference set in advance, control heat generating device does not heat.
Further, the big part of the machine tool structure is selected from following one or more:Lathe bed, column, slide.
Further, the heat generating device is heating board.
Further, heating board is placed using the center of deformation of the big part of machine tool structure as symmetrical centre.
Further, heating board is parallel with guide rail mounting surface.
The invention also discloses a kind of heat balance system of precise horizontal machining center machine tool guideway frictional heating, including machine
The big part of bed structure, the guide rail mounting surface of the big part of machine tool structure has been provided opposite to heat generating device, in the big part of machine tool structure
In cavity, temperature sensor is respectively arranged with the side close to guide rail mounting surface and the side away from guide rail mounting surface, point
The temperature of the side close to the side of guide rail mounting surface and remote guide rail mounting surface Yong Yu not detected;The heat generating device, temperature
Degree sensor is connected with numerical control module;Numerical control module calculates each big part of machine tool structure close to the one side of guide rail mounting surface and leads
The temperature difference between the opposite of rail mounting surface, and compared with temperature difference set in advance, fever dress is controlled according to comparative result
Put and whether heat.
Further, the big part of machine tool structure includes being selected from following one or more:Lathe bed, column, slide.
Further, the heat generating device is heating board;Heating board using the center of deformation of the big part of machine tool structure to be symmetrical in
The heart is placed.
Further, heating board is parallel with guide rail mounting surface.
The heat balance method and system of precise horizontal machining center machine tool guideway frictional heating of the present invention have beneficial below
Effect:
(1)Since heat generating device is small, thickness is small, only several millimeters, therefore easy to be installed and used on lathe;
(2)Since heat generating device is automatically controlled mode, there is no circulating line necessary to fluid application, do not influence lathe
The motion state of component;
(3)Due to the mode of heating of lathe, monitored to be real-time, according to measurement result, automatic control heated condition in real time, because
This, makes the control of equalized temperature reach intelligent;
(4)The temperature of the measurement point in observation lathe work, and temperature difference situation can manually be facilitated, the convenient progress temperature difference
Setting, formulates the control requirement of equalized temperature, according to actual conditions, the control parameter of rapid Optimum equalized temperature.
Brief description of the drawings
The present invention is elaborated with reference to the accompanying drawings and detailed description:
Fig. 1 shows the layout structure schematic diagram of precise horizontal machining center lathe.
Fig. 2 shows the deformation schematic diagram of lathe big structure part caused by guide rail fever.
Fig. 3 shows the structural representation of the heat balance system of precise horizontal machining center machine tool guideway frictional heating of the present invention
Figure.
Embodiment
Below with reference to the embodiments and with reference to the accompanying drawing the technical solutions of the present invention will be further described.
The related big part of horizontal machining center machine structure mainly includes 3, i.e. lathe bed, column, slide;In each structure
Heating board is sticked on the opposite of big part guide rail mounting surface, and placement location and the possible center of deformation of structure of heating board are symmetrically preferred,
In the cavity of the big part of structure, 2 temperature are set to pass respectively on the opposite of the one side close to guide rail mounting surface and guide rail mounting surface
Sensor, measures the temperature difference between two sides, the caloric value of heating board is controlled by electric current and voltage, by setting different temperature difference
Compared with measuring obtained temperature difference, the caloric value of automatic control and adjustment heating board, so as to play and guide rail mounting surface
The Balanceregulation of temperature.
As shown in figure 3, increase heating board 9 in the bottom of lathe bed 1,2 temperature detection sensings of increase in lathe bed casting cavity body
Device 10;Increase heating board 11 at the rear portion of column 2, increase by 2 temperature detection sensors 10 in column casting cavity body;In slide 4
Rear portion increase heating board 12,2 temperature detection sensors 10 of increase in slide casting cavity body.Temperature sensor passes through conducting wire 13
It is connected with the temperature compensation plates in numerical control module 15, heating board is connected by conducting wire 14 with the relay of numerical control module.
By the PLC functions of numerical control module, the temperature value of each temperature sensor is read, calculates major structural member cavity respectively
The temperature gap of inner sensor.Establishment control program, when temperature gap is more than setting value, relay control heating board heating,
When the temperature difference is less than setting value, relay disconnects, and heating board does not heat.
Above-described embodiment is in the art the purpose is to be to allow simply to illustrate that the technical concepts and features of the present invention
Those of ordinary skill can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all
It is the equivalent change or modification according to the present invention made by the essence of content, should all covers within the scope of the present invention.
Claims (2)
- A kind of 1. heat balance method of precise horizontal machining center machine tool guideway frictional heating, it is characterised in that:Including following step Suddenly:Heat generating device is provided opposite in the guide rail mounting surface of machine tool structure big part;In the cavity of the big part of machine tool structure, set respectively on the opposite of the one side close to guide rail mounting surface and guide rail mounting surface Temperature sensor, is respectively used to detect the temperature close to the one side of guide rail mounting surface and the opposite of guide rail mounting surface;Calculate close to guide rail mounting surface one side and guide rail mounting surface opposite between the temperature difference, and with the temperature difference set in advance Value is compared, and controls whether heat generating device heats according to comparative result;When the temperature difference between the opposite of the one side close to guide rail mounting surface and guide rail mounting surface is more than temperature difference set in advance When, control heat generating device heating;The temperature difference between the opposite of the one side close to guide rail mounting surface and guide rail mounting surface is less than During temperature difference set in advance, control heat generating device does not heat;The big part of machine tool structure is selected from following one or more:Lathe bed, column, slide;The heat generating device is heating board;Heating board is placed using the center of deformation of the big part of machine tool structure as symmetrical centre, hair Hot plate is parallel with guide rail mounting surface;Temperature sensor is connected by conducting wire with numerical control mould temperature compensation plates in the block, and heating board passes through conducting wire and numerical control module Relay be connected;By the PLC functions of numerical control module, the temperature value of each temperature sensor is read, calculates each lathe respectively The temperature gap of the big part cavity inner temperature sensor of structure;Establishment control program, when temperature gap is more than setting value, relay Heating board heating is controlled, when the temperature difference is less than setting value, relay disconnects, and heating board does not heat.
- A kind of 2. thermal balance system of the precise horizontal machining center machine tool guideway frictional heating of application method as claimed in claim 1 System, it is characterised in that:Including the big part of machine tool structure, the guide rail mounting surface of the big part of machine tool structure has been provided opposite to fever dress Put, in the cavity of the big part of machine tool structure, in the side close to guide rail mounting surface and the difference of the side away from guide rail mounting surface Temperature sensor is provided with, is respectively used to detection close to the temperature of the side of guide rail mounting surface and the side of remote guide rail mounting surface Degree;The heat generating device, temperature sensor and numerical control module connect;Numerical control module calculates each big part of machine tool structure close to guide rail The temperature difference between the one side of mounting surface and the opposite of guide rail mounting surface, and compared with temperature difference set in advance, according to Whether comparative result control heat generating device heats;The big part of machine tool structure includes being selected from following one or more:Lathe bed, column, Slide;The heat generating device is heating board, and heating board is placed using the center of deformation of the big part of machine tool structure as symmetrical centre, hair Hot plate is parallel with guide rail mounting surface;Temperature sensor is connected by conducting wire with numerical control mould temperature compensation plates in the block, heating board It is connected by conducting wire with the relay of numerical control module;By the PLC functions of numerical control module, the temperature of each temperature sensor is read Value, calculates the temperature gap of the big part cavity inner temperature sensor of each machine tool structure respectively;Establishment control program, when temperature gap is big When setting value, relay control heating board heating, when the temperature difference is less than setting value, relay disconnects, and heating board does not heat.
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CN107443152A (en) * | 2017-08-03 | 2017-12-08 | 安徽科创生产力促进中心有限责任公司 | A kind of radial drilling machine adjustable precision increases device |
CN107414582A (en) * | 2017-08-03 | 2017-12-01 | 安徽科创生产力促进中心有限责任公司 | A kind of radial drilling machine precision increases device |
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CN2873409Y (en) * | 2005-11-28 | 2007-02-28 | 陈志平 | Heat compensating device for complex processing machine |
CN100450709C (en) * | 2006-09-07 | 2009-01-14 | 重庆机床(集团)有限责任公司 | Control device for remote diagnosing thermal deformation of machine tool |
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- 2015-11-02 CN CN201510730931.1A patent/CN105234739B/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0482649A (en) * | 1990-07-24 | 1992-03-16 | Hamai Sangyo Kk | Control unit for posture of machine tool |
CN102198609A (en) * | 2010-03-25 | 2011-09-28 | 德克尔马霍泽巴赫有限公司 | Method and device for compensating for temperature-dependent positioning changes on a machine tool |
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