CN113970280A - Measuring device and measuring method for grinding dimensional accuracy of machine tool guide rail - Google Patents
Measuring device and measuring method for grinding dimensional accuracy of machine tool guide rail Download PDFInfo
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- CN113970280A CN113970280A CN202111183482.5A CN202111183482A CN113970280A CN 113970280 A CN113970280 A CN 113970280A CN 202111183482 A CN202111183482 A CN 202111183482A CN 113970280 A CN113970280 A CN 113970280A
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- guide rail
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000005259 measurement Methods 0.000 claims abstract description 16
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000010485 coping Effects 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a measuring device and a measuring method for grinding dimensional accuracy of a machine tool guide rail, wherein the measuring device comprises a measuring rod, measuring meter frames are arranged at positions, close to two ends of the measuring rod, each measuring meter frame is connected with a dial indicator, two supporting seats are arranged between the two measuring meter frames of the measuring rod, a positioning plate is arranged between the two supporting seats of the measuring rod, and a sliding positioning piece is arranged at one side, far away from the measuring rod, of the positioning plate. The measuring method comprises the following steps: step 1: assembling a measuring device: step 2: adjusting and positioning on the reference lathe bed; and step 3: and (3) mounting the measuring device on the bed body to be measured, reading the pointer values of the two dial indicators, and finishing measurement when the pointer value on the bed body to be measured is consistent with the pointer value on the reference bed body. The invention can control the consistency of various measured values of the guide rail surface of the machine tool when grinding a plurality of sections of machine tools, and meets the requirements of detection and control of the grinding dimensional precision of the guide rail of the machine tool.
Description
Technical Field
The invention belongs to the technical field of mechanical auxiliary equipment, and particularly relates to a device for measuring grinding dimensional accuracy of a machine tool guide rail and a measuring method of the device.
Background
The large machine tool has a large processing range and a long machine tool body, is generally formed by splicing a plurality of machine tool bodies, and after the large machine tool is used for a period of time, the precision of the large machine tool is reduced due to the abrasion of a guide rail surface, so that when the processing requirement cannot be met, the precision of a guide rail of the machine tool is generally recovered by a method of grinding by using a guide rail grinding machine. Due to the limitation of the processing range of the guide rail grinding machine, the grinding length of the guide rail grinding machine cannot meet the requirement of clamping and grinding all sections of machine beds at one time, sectional grinding is needed, and then the machine beds are spliced for use.
The detection requirements of the grinding size precision of the guide rail of the lathe bed are as follows: after the multi-section guide rail is polished, splicing is carried out, and the following dimensional precision items are detected: 1) straightness of each surface of the guide rail surface and the rack mounting surface; 2) parallelism between the guide surface and the rack mounting surface; 3) grinding the guide rail surface of the lathe bed; the rack is provided with a reference surface, each surface can be visible light, the grinding amount is as small as possible, and the roughness requirement reaches Ra0.4. The total width dimension of each section of bed guide rail, the width dimension of the guide rail and the dimension from the guide rail surface to the reference surface are required to be consistent as much as possible.
In the polishing process, the vernier caliper and the outer micrometer are used for directly measuring all sizes, the polishing is controlled, the error in the measuring process is large, and the operation is inconvenient. If the grinding precision of the guide rail cannot meet the requirement, the machine tool has poor running precision in running, cannot meet the requirement of machining precision, generates the phenomena of vibration, creeping and the like, cannot work normally, and even can be damaged.
Disclosure of Invention
The invention aims to provide a measuring device and a measuring method for grinding dimensional accuracy of a machine tool guide rail, which solve the problems that dimensional control and measurement are difficult and the measurement accuracy is low in the grinding process of the machine tool guide rail of the existing machine tool.
One technical solution adopted by the present invention is that,
the utility model provides a measuring device of machine tool guide rail coping size precision, includes the measuring stick, and the measuring stick all is provided with the gauge stand in the position that is close to its both ends, installs the percentage table on every gauge stand, and the measuring stick is being located and is being provided with two supports between two gauge stands, and the measuring stick is being located and is being provided with the locating plate between two supports, and the locating plate is provided with the slip setting element in the one side of keeping away from the measuring stick.
The present invention is also characterized in that,
the measuring rod is connected and fixed with the measuring meter frame, the support and the positioning plate through the inner hexagon screws.
The sliding positioning piece is a steel ball which is arranged on the positioning plate.
The measuring meter frame is connected with the dial indicator through the socket head cap screws.
In another technical solution of the present invention,
a method for measuring the grinding dimensional accuracy of a machine tool guide rail comprises the following steps:
step 1: assembling a measuring device: mounting the support and the positioning plate on the measuring rod through the inner hexagon screw, mounting the measuring meter frame on the measuring rod through the hexagon screw, and fixing the dial indicator on the measuring meter frame through the inner hexagon screw;
step 2: installing the assembled measuring device on a reference lathe bed for adjusting and positioning: two steel balls of the positioning plate are tightly attached to the measuring surface, the positions of two measuring gauges erected on the measuring rod are adjusted through the hexagon screws, and the pointer values of the two dial gauges are recorded;
and step 3: and taking the adjusted measuring device off the reference bed body, then installing the adjusted measuring device on the bed body to be measured, reading the pointer values of the two dial indicators, if the pointer values of the two times are different, taking the measuring device off to continuously polish the corresponding measuring surface on the bed body to be measured, and finishing the measurement when the pointer value on the bed body to be measured is consistent with the pointer value on the reference bed body.
The invention has the beneficial effects that: the measuring device for grinding dimensional accuracy of the machine tool guide rail is a measuring device composed of a dial indicator, a gauge stand, a support, a positioning plate, a measuring rod and the like, and has the advantages of reasonable design structure, high convenience for installation and measurement, simple control and detection process for grinding dimensional accuracy of the machine tool guide rail, high measuring accuracy and certain practical significance.
Drawings
FIG. 1 is a schematic structural diagram of a measuring device for grinding dimensional accuracy of a machine tool guide rail according to the invention;
FIG. 2 is a schematic diagram of the splicing of the guide rails of the machine tool in the measuring device for the grinding dimensional accuracy of the guide rails of the machine tool of the invention;
FIG. 3 is a schematic diagram of a bed to be measured in the measuring device for grinding dimensional accuracy of a machine tool guide rail according to the invention;
FIG. 4 is a schematic structural diagram of a measuring gauge stand in the measuring device for grinding dimensional accuracy of a machine tool guide rail according to the invention;
FIG. 5 is a schematic structural diagram of a positioning plate in the measuring device for grinding dimensional accuracy of a machine tool guide rail according to the present invention;
FIG. 6 is a schematic view of d-dimension measurement in the measuring device for grinding dimension accuracy of the machine tool guide rail.
In the figure, 1 is a measuring rod, 2 is a measuring meter frame, 3 is a dial indicator, 4 is a support, 5 is a positioning plate, 6 is a steel ball, 7 is an inner hexagonal screw, 8 is a lathe bed to be measured, 9 is a flat ruler, and 10 is a hexagonal bolt.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The utility model provides a measuring device of machine tool guide rail coping size precision, as shown in figure 1, a measuring device of machine tool guide rail coping size precision, including measuring stick 1, measuring stick 1 all is provided with measurement table frame 2 in the position that is close to its both ends, every measurement table frame 2 is connected with percentage table 3, measuring stick 1 is being provided with two supports 4 between two measurement table frames 2 lieing in, measuring stick 1 is being provided with locating plate 5 between two supports 4 lieing in, locating plate 5 is being provided with the slip setting element in one side of keeping away from measuring stick 1. The measuring rod 1 is fixedly connected with the measuring meter frame 2, the support 4 and the positioning plate 5 through a socket head cap screw 7. The sliding positioning piece is a steel ball 6, and the steel ball 6 is arranged on the positioning plate 5. The measuring gauge stand 2 is connected with the dial indicator 3 through a socket head cap screw 7.
A method for measuring the grinding dimensional accuracy of a machine tool guide rail comprises the following steps:
step 1: assembling a measuring device: the support 4 and the positioning plate 5 are arranged on the measuring rod 1 through the hexagon socket head cap screws 7, the measuring meter frame 2 is arranged on the measuring rod 1 through the hexagon socket head cap screws 7, and the dial indicator 3 is fixed on the measuring meter frame 2 through the hexagon socket head cap screws 7;
step 2: installing the assembled measuring device on a reference lathe bed for adjusting and positioning: two steel balls 6 of the positioning plate 4 are tightly attached to the measuring surface, the positions of two measuring meter frames 2 on the measuring rod 1 are adjusted through a hexagon screw 7, and the pointer values of two dial indicators 3 are recorded;
and step 3: and taking the adjusted measuring device off the reference bed body, then installing the adjusted measuring device on the bed body 8 to be measured, reading the pointer values of the two dial indicators 3, if the pointer values of the two times are different, taking the measuring device off to continuously polish the corresponding measuring surface on the bed body 8 to be measured, and finishing the measurement when the pointer value on the bed body 8 to be measured is consistent with the pointer value on the reference bed body.
As shown in fig. 4, the dial indicator 3 is fitted into a hole K of the gauge stand 2, fastened with two socket head cap screws 7, and then can be fitted to the measuring stick 1.
The support 4 is arranged in the measuring rod 1 and is fastened by two socket head cap screws 7.
As shown in fig. 5, the positioning plate 5 is fixedly provided with two steel balls 6 as a measuring head, and then is mounted on the measuring rod 1 and fastened by two socket head cap screws 7.
The following describes in detail a device and a method for measuring the grinding dimensional accuracy of a machine tool guide rail according to the present invention with reference to specific embodiments.
As shown in fig. 3 and 6, the bed with the most worn and damaged guide rails is first used as the first stage bed for grinding, i.e., the reference bed for grinding.
During grinding, the rack mounting surface H, I is used as a reference surface, and the dial indicator is pulled to be aligned.
As shown in fig. 6, firstly, the guide rail surface A, B and the reference surface I are polished, the surfaces a and B are polished to be the same plane, the height h of the flat ruler 9 and the distance g from the surface L of the flat ruler to the rack mounting surface I are measured by a depth micrometer, and then the distance d from the guide rail a (B) to the rack mounting surface I is calculated to be g-h; the surface E, F, G of the guide rail is polished, and the dimensions c, e and f are measured by an outside micrometer.
And the numerical values d, e and f are used as the sizes which need to be controlled to be consistent when the rest sections of the lathe bed are ground.
And (3) grinding the rest damaged lathe bed section by section according to the steps by taking the reference lathe bed as a standard:
and then measuring the reference lathe bed, tightly attaching two steel balls 6 of a positioning plate 5 to a rack mounting surface H, adjusting the positions of two measuring meter frames 2 in the measuring device on a measuring rod 1, and recording the positions of pointers of two dial indicators 3.
Grinding the guide rail surface C, D and the rack mounting surface H for multiple times, measuring, placing the adjusted measuring device on the lathe bed, enabling the steel ball 6 on the positioning plate 5 to be close to the surface H, and reading the pointer values of the two dial indicators 3 until the pointer values are consistent with the measured value of the reference lathe bed. This ensures that the distance dimension b from the section of bed guide surface C to the rack mounting surface, and the distance a of the guide surface C, D (total rail width) is the same as the reference bed guide.
As shown in figure 2, grinding each guide rail surface of other sections of the lathe bed to meet the requirement, assembling each section of the lathe bed into a whole by using a hexagon bolt 10, if the straightness of the total length of the guide rail does not meet the requirement, scraping the connecting surface J of each section of the lathe bed, and adjusting the straightness of the guide rail of the lathe bed.
According to the measuring device and the measuring method for the grinding dimensional accuracy of the machine tool guide rail, the sizes c, d, e and f are measured by the standard measuring tool, and the machining accuracy can be controlled to be 0.01 mm. The dimensions a and b are measured by a measuring device, the absolute value of the dimension measurement value may not be accurate, but as a relative value, the consistency of the control grinding dimension can reach 0.015mm, and the measurement control requirement of the guide rail grinding can be met. The measuring method using the measuring device can control the consistency of all measured values of the guide rail surface when a plurality of sections of machine beds are ground, and meets the requirements of detection and control of grinding dimensional accuracy of the guide rails of the machine beds.
Claims (5)
1. The utility model provides a measuring device of machine tool guide rail coping size precision, its characterized in that, includes measuring stick (1), measuring stick (1) all is provided with measurement table frame (2), every in the position that is close to its both ends install percentage table (3) on measurement table frame (2), measuring stick (1) is lieing in two be provided with two supports (4) between measurement table frame (2), measuring stick (1) is lieing in between two supports (4) and is provided with locating plate (5), locating plate (5) are provided with the slip setting element in the one side of keeping away from measuring stick (1).
2. The device for measuring the grinding dimensional accuracy of the machine tool guide rail as claimed in claim 1, wherein the measuring rod (1) is fixedly connected with the measuring gauge stand (2), the support (4) and the positioning plate (5) through a hexagon socket head cap screw (7).
3. The device for measuring the grinding dimensional accuracy of the machine tool guide rail according to claim 1, wherein the sliding positioning piece is a steel ball (6), and the steel ball (6) is arranged on the positioning plate (5).
4. The device for measuring the grinding dimensional accuracy of the machine tool guide rail as claimed in claim 1, wherein the measuring gauge stand (2) is connected with the dial indicator (3) through a socket head cap screw (7).
5. The device for measuring the grinding dimensional accuracy of the machine tool guide rail according to claim 1, which is a method for measuring the grinding dimensional accuracy of the machine tool guide rail, and which comprises the following steps:
step 1: assembling a measuring device: the support (4) and the positioning plate (5) are arranged on the measuring rod (1) through the inner hexagon screw (7), the measuring meter frame (2) is arranged on the measuring rod (1) through the hexagon screw (7), and the dial indicator (3) is fixed on the measuring meter frame (2) through the inner hexagon screw (7);
step 2: installing the assembled measuring device on a reference lathe bed for adjusting and positioning: two steel balls (6) of the positioning plate (4) are tightly attached to the measuring surface, the positions of two measuring meter frames (2) on the measuring rod (1) are adjusted through a hexagon screw (7), and the pointer values of two dial indicators (3) are recorded;
and step 3: and taking the adjusted measuring device off the reference bed body, then installing the adjusted measuring device on the bed body (8) to be measured, reading the pointer values of the two dial indicators (3), if the pointer values of the two times are different, taking the measuring device off to continuously grind the corresponding measuring surface on the bed body (8) to be measured, and finishing the measurement when the pointer value on the bed body (8) to be measured is consistent with the pointer value on the reference bed body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111183482.5A CN113970280B (en) | 2021-10-11 | 2021-10-11 | Measuring method for grinding dimensional accuracy of machine tool guide rail |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111183482.5A CN113970280B (en) | 2021-10-11 | 2021-10-11 | Measuring method for grinding dimensional accuracy of machine tool guide rail |
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| CN113970280A true CN113970280A (en) | 2022-01-25 |
| CN113970280B CN113970280B (en) | 2024-02-06 |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1750083A1 (en) * | 2005-08-04 | 2007-02-07 | Dr. Johannes Heidenhain GmbH | Length measuring device |
| CN201016684Y (en) * | 2006-12-23 | 2008-02-06 | 天水星火机床有限责任公司 | Lathe bed guide rail precision checkout gear |
| CN101776429A (en) * | 2010-02-13 | 2010-07-14 | 桂林福达曲轴有限公司 | Check tool for measuring axial length of crank shaft and application thereof |
| CN102980495A (en) * | 2012-11-16 | 2013-03-20 | 安阳鑫盛机床股份有限公司 | Measurement tool for parallelism error of two side faces of guide rail of machine tool |
| CN106091992A (en) * | 2016-08-23 | 2016-11-09 | 中冶陕压重工设备有限公司 | Plane milling and boring machine bed ways parallelism detecting device and detection method |
| CN106475834A (en) * | 2015-08-27 | 2017-03-08 | 成都飞机工业（集团）有限责任公司 | A kind of method of lead screw shaft bearings centering |
| CN209279863U (en) * | 2018-11-19 | 2019-08-20 | 沪东重机有限公司 | A kind of crankshaft cap installation mating surface arrangement for measuring verticality of body |
-
2021
- 2021-10-11 CN CN202111183482.5A patent/CN113970280B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1750083A1 (en) * | 2005-08-04 | 2007-02-07 | Dr. Johannes Heidenhain GmbH | Length measuring device |
| CN201016684Y (en) * | 2006-12-23 | 2008-02-06 | 天水星火机床有限责任公司 | Lathe bed guide rail precision checkout gear |
| CN101776429A (en) * | 2010-02-13 | 2010-07-14 | 桂林福达曲轴有限公司 | Check tool for measuring axial length of crank shaft and application thereof |
| CN102980495A (en) * | 2012-11-16 | 2013-03-20 | 安阳鑫盛机床股份有限公司 | Measurement tool for parallelism error of two side faces of guide rail of machine tool |
| CN106475834A (en) * | 2015-08-27 | 2017-03-08 | 成都飞机工业（集团）有限责任公司 | A kind of method of lead screw shaft bearings centering |
| CN106091992A (en) * | 2016-08-23 | 2016-11-09 | 中冶陕压重工设备有限公司 | Plane milling and boring machine bed ways parallelism detecting device and detection method |
| CN209279863U (en) * | 2018-11-19 | 2019-08-20 | 沪东重机有限公司 | A kind of crankshaft cap installation mating surface arrangement for measuring verticality of body |
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| CN113970280B (en) | 2024-02-06 |
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