CN113970280B - Measuring method for grinding dimensional accuracy of machine tool guide rail - Google Patents
Measuring method for grinding dimensional accuracy of machine tool guide rail Download PDFInfo
- Publication number
- CN113970280B CN113970280B CN202111183482.5A CN202111183482A CN113970280B CN 113970280 B CN113970280 B CN 113970280B CN 202111183482 A CN202111183482 A CN 202111183482A CN 113970280 B CN113970280 B CN 113970280B
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- guide rail
- machine tool
- positioning plate
- measuring device
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- 238000000034 method Methods 0.000 title claims abstract description 25
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 238000001514 detection method Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000003754 machining Methods 0.000 description 5
- 238000005498 polishing Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Classifications
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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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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a measuring device and a measuring method for the 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 supports are arranged between the two measuring meter frames of the measuring rod, a positioning plate is arranged between the two supports of the measuring rod, and a sliding positioning piece is arranged on 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 by using a reference lathe bed; step 3: and installing the measuring device on the bed body to be measured, reading pointer values of the two dial indicators, and completing 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 each measured value of the guide rail surface of the machine tool when grinding a plurality of sections of machine tools, and meets the requirements of the grinding size precision detection and control 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 measuring method for the grinding dimensional accuracy of a machine tool guide rail.
Background
The large machine tool has a large machining range, the length of the machine tool is long, the machine tool is formed by splicing a plurality of sections of machine tools, after the machine tool is used for a period of time, the precision of the guide rail surface is reduced due to abrasion, and when the machining requirement cannot be met, the precision of the guide rail of the machine tool is generally required to be recovered by a method of grinding by a guide rail grinder. Because the machining range of the guide rail grinding machine is limited, the grinding length cannot meet the requirement of grinding all sections of the machine tool body by one-time clamping, the machine tool body needs to be ground in a segmented mode, then the machine tool body is spliced for use, the requirement of the machine tool guide rail grinding dimensional accuracy is met, and the actual operation difficulty is relatively high.
The detection requirements of the grinding dimensional accuracy of the lathe bed guide rail are as follows: after the multi-section guide rail is polished, splicing is carried out, and the following dimensional accuracy items are detected: 1) Straightness of each surface of the guide rail surface and the rack mounting surface; 2) Parallelism between the guide rail surface and the rack mounting surface; 3) Grinding the guide rail surface of the lathe bed; the rack is provided with a reference surface, all surfaces are exposed to light, the grinding amount is as small as possible, and the roughness requirement reaches Ra0.4. The total width dimension of the guide rail of each section of the machine tool is required, the width dimension of the guide rail is required, and the dimension from the guide surface to the reference surface is consistent as much as possible.
In the grinding, all the sizes are directly measured by using a vernier caliper, an outside micrometer and the like, the grinding 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 running precision of the machine tool is poor in running, the machining precision requirement cannot be met, and the phenomena of vibration, creeping and the like are generated, so that the machine tool cannot work normally, and even the machine tool is possibly damaged.
Disclosure of Invention
The invention aims to provide a measuring method for the grinding dimensional accuracy of a machine tool guide rail, which solves the problems that the dimensional control and measurement are difficult to a certain extent and the measuring accuracy is not high in the grinding process of the machine tool guide rail of the existing machine tool.
The invention adopts a technical proposal that,
the measuring method for the grinding dimensional accuracy of the machine tool guide rail is characterized by comprising a measuring device with the following structure, wherein the measuring device comprises measuring rods (1), measuring meter frames (2) are arranged on the measuring rods (1) at positions close to two ends of the measuring rods, a dial indicator (3) is arranged on each measuring meter frame (2), two supports (4) are arranged between the two measuring meter frames (2) of the measuring rods (1), a positioning plate (5) is arranged between the two supports (4) of the measuring rods (1), and a sliding positioning piece is arranged on one side, far away from the measuring rods (1), of the positioning plate (5); the sliding positioning piece is a steel ball (6), and the steel ball (6) is arranged on the positioning plate (5); the measuring rod (1) is connected with the fixed measuring meter frame (2), the support (4) and the positioning plate (5) through the inner hexagon screw (7), and the measuring meter frame (2) is connected with the dial indicator (3) through the inner hexagon screw (7);
the method 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 adjustment and positioning: the two steel balls (6) of the positioning plate (5) are tightly attached to the measuring surface, the positions of the two measuring meter frames (2) on the measuring rod (1) are adjusted through the hexagon screws (7), and pointer values of the two dial indicators (3) are recorded;
step 3: and taking down the adjusted measuring device from the reference lathe bed, then installing the adjusted measuring device on the lathe bed (8) to be measured, reading pointer values of the two dial indicators (3), if the two pointer values are different, taking down the measuring device, continuously grinding a corresponding measuring surface on the lathe bed (8) to be measured, and finishing measurement when the pointer value on the lathe bed (8) to be measured is consistent with the pointer value on the reference lathe bed.
The beneficial effects of the invention are as follows: the measuring device for the grinding dimensional accuracy of the machine tool guide rail adopts the measuring device which consists of the dial indicator, the meter frame, the support, the positioning plate, the measuring rod and the like, has reasonable design structure, higher convenience in installation and measurement, simple and convenient control and detection process for the grinding dimensional accuracy of the machine tool guide rail, higher measuring accuracy and certain practical significance.
Drawings
FIG. 1 is a schematic diagram of a measuring device in a measuring method for the grinding dimensional accuracy of a machine tool guide rail;
FIG. 2 is a schematic diagram showing the splicing of a guide rail of a measuring device in the method for measuring the grinding dimensional accuracy of the guide rail of the machine tool;
FIG. 3 is a schematic view of a bed to be measured by a measuring device in a measuring method of the grinding dimensional accuracy of a machine tool guide rail;
FIG. 4 is a schematic diagram of the structure of a measuring meter frame of a measuring device in the measuring method of the grinding dimensional accuracy of the machine tool guide rail;
FIG. 5 is a schematic diagram of the structure of a positioning plate of a measuring device in the measuring method of the grinding dimensional accuracy of the machine tool guide rail;
fig. 6 is a schematic diagram of d-dimension measurement in a measuring device in a measuring method of grinding dimensional accuracy of a machine tool guide rail according to the present invention.
In the figure, a measuring rod 1, a measuring meter frame 2, a dial indicator 3, a support 4, a positioning plate 5, a steel ball 6, a socket head cap screw 7, a lathe bed to be measured 8, a flat ruler 9 and a hexagonal bolt 10.
Detailed Description
The invention will be described in detail below with reference to the drawings and the detailed description.
The measuring method of the grinding dimensional accuracy of the machine tool guide rail comprises the following structure of a measuring device, as shown in fig. 1, and the measuring device comprises a measuring rod 1, wherein measuring meter frames 2 are arranged on the measuring rod 1 at positions close to two ends of the measuring rod, each measuring meter frame 2 is connected with a dial indicator 3, two supports 4 are arranged between the two measuring meter frames 2 of the measuring rod 1, a positioning plate 5 is arranged between the two supports 4 of the measuring rod 1, and a sliding positioning piece is arranged on one side, far away from the measuring rod 1, of the positioning plate 5. The measuring rod 1 is connected and fixed with the measuring meter frame 2, the support 4 and the positioning plate 5 through the socket head cap screws 7. The sliding locating piece is a steel ball 6, and the steel ball 6 is arranged on the locating plate 5. The measuring meter frame 2 is connected with the dial indicator 3 through the socket head cap screws 7.
The method 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 socket head cap screws 7, the measuring meter frame 2 is arranged on the measuring rod 1 through the socket head cap screws 7, and the dial indicator 3 is fixed on the measuring meter frame 2 through the socket head cap screws 7;
step 2: installing the assembled measuring device on a reference lathe bed for adjustment and positioning: the two steel balls 6 of the positioning plate 4 are tightly attached to the measuring surface, the positions of the two measuring meter frames 2 on the measuring rod 1 are adjusted through the hexagon screws 7, and pointer values of the two dial indicators 3 are recorded;
step 3: and taking down the adjusted measuring device from the reference lathe bed, then installing the adjusted measuring device on the lathe bed 8 to be measured, reading pointer values of the two dial indicators 3, taking down the measuring device to continuously grind a corresponding measuring surface on the lathe bed 8 to be measured if the pointer values are different, and finishing measurement when the pointer value on the lathe bed 8 to be measured is consistent with the pointer value on the reference lathe bed.
As shown in fig. 4, the dial gauge 3 is fitted into the hole K of the gauge stand 2, fastened with two socket head cap screws 7, and then can be fitted to the measuring rod 1.
The support 4 is fitted into the measuring rod 1 and fastened with two socket head cap screws 7.
As shown in fig. 5, the positioning plate 5 is fixedly provided with two steel balls 6 as measuring heads, and then is mounted on the measuring rod 1 and is tightened by two socket head cap screws 7.
The measuring device and the measuring method for the grinding dimensional accuracy of the machine tool guide rail are further described in detail through specific embodiments.
As shown in fig. 3 and 6, the bed with the most serious abrasion and damage of the guide rail is firstly used as the first section of the polishing bed, namely the reference bed for polishing.
During grinding, the rack mounting surface H, I is used as a reference surface, and the pull meter is aligned.
As shown in fig. 6, the guide surface A, B and the reference surface I are polished first, the surfaces a and B are polished to be the same plane, the height dimension h of the flat ruler 9 and the distance g from the flat ruler L surface to the rack mounting surface I are measured by a depth micrometer, and then the distance dimension d=g-h from the guide rail a (B) to the rack mounting surface I is calculated; the guide surface E, F, G was ground and the dimensions c, e, f were measured using an outside micrometer.
The values d, e and f need to be controlled to be consistent in size when the other sections of the machine tool are polished.
Grinding the rest damaged lathe beds section by section according to the steps by taking the reference lathe bed as a reference lathe bed:
then, a reference lathe bed is measured, two steel balls 6 of a positioning plate 5 are tightly attached to a rack mounting surface H, positions of two measuring meter frames 2 in a measuring device on a measuring rod 1 are adjusted, and positions of pointers of two dial indicators 3 are recorded.
And 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, abutting the steel ball 6 on the positioning plate 5 on the H surface, and reading pointer values of the two dial indicators 3 until the pointer values are consistent with the reference lathe bed measured value. In this way, the distance (total width of the guide rail) a of the guide surface C, D from the guide surface C of the bed to the rack attachment surface is ensured to be identical to the reference bed guide.
As shown in fig. 2, the guide surfaces of other sections of the machine tool body are ground to meet the requirement, the hexagonal bolts 10 are used for assembling the machine tool body sections into a whole, and if the full length straightness of the guide rails does not meet the requirement, the connecting surfaces J of the machine tool body sections can be scraped, and the straightness of the guide rails of the machine tool body can be adjusted.
According to the measuring method for the grinding dimensional accuracy of the machine tool guide rail, the dimension c, d, e, f is measured by a standard measuring tool, and the machining accuracy can be controlled to be 0.01mm. The absolute value of the measured value of the dimension a and the dimension b is possibly inaccurate, but the relative value is used for controlling the consistency of the grinding dimension, the precision can reach 0.015mm, and the measuring control requirement of the guide rail grinding can be met. The measuring method of the measuring device can control the consistency of each measured value of the guide rail surface when the multi-section lathe bed is polished, and meets the requirements of detecting and controlling the polishing size precision of the guide rail of the lathe bed.
Claims (1)
1. The measuring method for the grinding dimensional accuracy of the machine tool guide rail is characterized by comprising a measuring device with the following structure, wherein the measuring device comprises measuring rods (1), measuring meter frames (2) are arranged on the measuring rods (1) at positions close to two ends of the measuring rods, a dial indicator (3) is arranged on each measuring meter frame (2), two supports (4) are arranged between the two measuring meter frames (2) of the measuring rods (1), a positioning plate (5) is arranged between the two supports (4) of the measuring rods (1), and a sliding positioning piece is arranged on one side, far away from the measuring rods (1), of the positioning plate (5); the sliding positioning piece is a steel ball (6), and the steel ball (6) is arranged on the positioning plate (5); the measuring rod (1) is connected with the fixed measuring meter frame (2), the support (4) and the positioning plate (5) through the inner hexagon screw (7), and the measuring meter frame (2) is connected with the dial indicator (3) through the inner hexagon screw (7);
the method 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 adjustment and positioning: the two steel balls (6) of the positioning plate (5) are tightly attached to the measuring surface, the positions of the two measuring meter frames (2) on the measuring rod (1) are adjusted through the hexagon screws (7), and pointer values of the two dial indicators (3) are recorded;
step 3: removing the adjusted measuring device from the reference bed, and then adjusting the measurement
The device is arranged on the lathe bed (8) to be measured, pointer values of the two dial indicators (3) are read, if the two pointer values are different, the measuring device is taken down to continuously grind the corresponding measuring surface on the lathe bed (8) to be measured, and when the pointer value on the lathe bed (8) to be measured is consistent with the pointer value on the reference lathe bed, the measurement is completed.
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 |
|---|---|---|---|
| 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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| Publication Number | Publication Date |
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| CN113970280A CN113970280A (en) | 2022-01-25 |
| CN113970280B true CN113970280B (en) | 2024-02-06 |
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| CN202111183482.5A Active CN113970280B (en) | 2021-10-11 | 2021-10-11 | Measuring method for grinding dimensional accuracy of machine tool guide rail |
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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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| CN113970280A (en) | 2022-01-25 |
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