CN216925457U - Reading head calibration tool - Google Patents
Reading head calibration tool Download PDFInfo
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- CN216925457U CN216925457U CN202123301137.5U CN202123301137U CN216925457U CN 216925457 U CN216925457 U CN 216925457U CN 202123301137 U CN202123301137 U CN 202123301137U CN 216925457 U CN216925457 U CN 216925457U
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- calibration tool
- plane grating
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Abstract
The utility model relates to the field of grating measurement, in particular to a reading head calibration tool. The reading head calibration tool comprises a base and a plane grating, the plane grating is installed on the base, the base is used for being installed on a reading head installation disc of a workpiece table, and the plane grating is used for being opposite to the upper end face of a reading head installed on the reading head installation disc. The reading head calibration tool provided by the utility model can achieve the purpose of debugging the reading head on site, and when the reading head breaks down and needs to be replaced, the reading head does not need to be returned to a factory for replacement, so that the maintenance period is shortened, and the cost is reduced.
Description
Technical Field
The utility model relates to the field of grating measurement, in particular to a reading head calibration tool.
Background
The displacement of the work bench is measured mainly by the work bench plane grating measuring system, so the measuring accuracy of the work bench plane grating position measuring system directly affects the work bench positioning accuracy, and the reading head is the main component of the work bench plane grating position measuring system, and the accuracy of the installation position directly affects the measuring accuracy.
At present, reading heads are installed and debugged before leaving factories, once the reading heads break down and need to be replaced, field calibration cannot be carried out, and in order to guarantee the position precision of the reading heads, the reading heads can only be returned to factories for replacement, so that the maintenance and repair period is long, and the cost is high.
In summary, how to overcome the above-mentioned defects of the conventional maintenance method for reading head is a technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a reading head calibration tool to solve the technical problems of long maintenance period and high cost of a reading head maintenance method in the prior art.
The reading head calibration tool provided by the utility model comprises a base and a plane grating, wherein the plane grating is arranged on the base, the base is used for being arranged on a reading head mounting disc of a workpiece table, and the plane grating is used for being opposite to the upper end surface of a reading head arranged on the reading head mounting disc.
Preferably, as an implementation mode, at least two first adjusting parts are installed at the bottom of the base, and the first adjusting parts are used for being in abutting fit with the workpiece table, adjusting the height difference between the top surface of the base and the top surface of the reading head mounting disc, and adjusting the levelness of the base.
Preferably, as an embodiment, the first adjusting member is an adjusting pad or an adjusting bolt.
Preferably, as an implementation mode, the number of the first adjusting parts is three, and the three first adjusting parts are uniformly distributed at the bottom of the base.
Preferably, as an implementation mode, at least two second adjusting pieces are installed on the side surface of the base opposite to the reading head mounting disc, and the second adjusting pieces are used for being in abutting fit with the reading head mounting disc and adjusting the deflection angle of the base relative to the reading head mounting disc in the horizontal direction.
Preferably, as an embodiment, the second adjusting member is an adjusting pad or an adjusting bolt.
Preferably, as an implementation mode, a limit column is arranged on the base, and the limit column is used for abutting against and limiting the edge of the reading head mounting disc.
Preferably, as an implementation mode, the base and the reading head mounting plate are fixedly connected through a threaded connection piece.
Preferably, as an implementation mode, a through hole is formed in the middle of the base, a threaded hole is formed in the workpiece table, and the through hole and the threaded hole are both matched with the threaded connecting piece.
Preferably, as an implementation manner, the base is further provided with a through glue injection hole, and one end of the glue injection hole extends to the plane grating.
Compared with the prior art, the utility model has the beneficial effects that:
when the reading head on the workpiece table needs to be replaced, the reading head to be replaced can be detached firstly, then the base of the reading head calibration tool provided by the utility model is installed on the reading head installation disc of the workpiece table, which is close to the reading head installation position, and a new reading head is installed after the reading head calibration tool is installed, at the moment, the upper end surface of the newly installed reading head is opposite to the plane grating on the base, and the plane grating can provide a reference datum for signal debugging of the newly installed reading head. On the basis, the newly installed reading head is adjusted, meanwhile, the signal value of the newly installed reading head is tested, and when the signal value of the newly installed reading head reaches a preset value or more, the position precision of the newly installed reading head meets the installation requirement. Specifically, the signal value is a ratio of an alternating current signal to a direct current signal.
Therefore, the reading head calibration tool provided by the utility model can realize the purpose of debugging the reading head on site, and when the reading head breaks down and needs to be replaced, the reading head does not need to be returned to a factory for replacement, so that the maintenance and repair period is shortened, and the cost is reduced.
In addition, the reading head calibration tool provided by the utility model is not only used for replacing a faulty reading head, but also can be applied to the situation of mounting the reading head on a structure similar to a reading head mounting disc.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic perspective view of a reading head calibration tool according to an embodiment of the present invention
Fig. 2 is a schematic perspective view of another view angle of the reading head calibration tool according to the embodiment of the present invention;
fig. 3 is a schematic structural view of a reading head calibration tool provided in an embodiment of the present invention when being matched with a reading head mounting plate; (ii) a
Fig. 4 is a schematic perspective view of a reading head mounting plate on which a reading head is mounted according to an embodiment of the present invention.
Description of reference numerals:
100-reading head mounting plate;
200-a read head;
300-reading head calibration tooling; 310-a base; 311-glue injection holes; 312-a via; 320-a plane grating; 330-a first adjustment member; 340-a second adjustment member; 350-limit column.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, e.g., as being either fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.
Referring to fig. 1 to 4, the embodiment provides a reading head calibration tool 300, which includes a base 310 and a plane grating 320, wherein the plane grating 320 is installed on the base 310, the base 310 is used for being installed on a reading head installation disc 100 of a workpiece platform, and the plane grating 320 is used for being opposite to an upper end face of a reading head 200 installed on the reading head installation disc 100.
When the reading head 200 on the workpiece table needs to be replaced, the reading head 200 to be replaced can be firstly detached, then, the base 310 of the reading head calibration tool 300 provided by the utility model is arranged on the reading head mounting disc 100 of the workpiece platform at a position close to the reading head mounting position, after the reading head calibration tool 300 is installed, a new reading head 200 is installed, at this time, the upper end surface of the newly installed reading head 200 is opposite to the plane grating 320 on the base 310, the plane grating 320 can provide a plane grating reference datum for the light intensity signal debugging of the newly installed reading head 200, on the basis of which the newly installed reading head 200 can be adjusted, and at the same time, the newly installed readhead 200 is tested for the ratio of the ac signal to the dc signal, when the ratio of the ac electrical signal to the dc electrical signal of the newly installed readhead 200 reaches a predetermined value or more, the positional accuracy of the newly installed readhead 200 meets the installation requirements.
Therefore, the reading head calibration tool 300 provided by the embodiment can achieve the purpose of debugging the reading head 200 on site, and when the reading head 200 breaks down and needs to be replaced, the reading head does not need to be returned to a factory for replacement, so that the maintenance period is shortened, and the cost is reduced.
In addition, the reading head calibration tool 300 provided by the embodiment is not only used for replacing the faulty reading head 200, but also can be applied to the situation of installing the reading head 200 on the structure of the similar reading head installation disc 100, and when the tool is applied to the situation of installing the reading head 200 on the structure of the similar reading head installation disc 100, the using method of the tool is consistent with the steps after the faulty reading head is disassembled, which are the using method of replacing the faulty reading head.
After the reading head calibration fixture 300 is installed, the reading head calibration fixture 300 can be adjusted, specifically, the position precision of the reading head calibration fixture 300 is measured by using a three-coordinate measuring machine, the reading head calibration fixture 300 is adjusted according to the measurement result of the three-coordinate measuring machine, and the measurement and the adjustment are repeatedly and circularly performed until the measurement result of the three-coordinate measuring machine meets the installation requirement.
It should be noted that the mounting accuracy of the reading head calibration tool 300 directly affects subsequent calibration of the reading head 200, thereby affecting the mounting accuracy of the reading head 200, and therefore, the position accuracy of the reading head calibration tool 300 is measured by using the three-coordinate measuring machine, which can make the mounting accuracy of the reading head calibration tool 300 higher, thereby improving the calibration accuracy of the reading head 200 and facilitating the guarantee of the mounting accuracy of the reading head 200.
Specifically, at least two first adjusting parts 330 may be installed at the bottom of the base 310, so as to be in abutting fit with the reading head mounting plate 100 by using the first adjusting parts 330, the first adjusting parts 330 may adjust a height difference between the top surface of the base 310 and the top surface of the reading head mounting plate 100, and may also adjust a levelness of the base 310 (i.e., a levelness of the plane grating 320), so that a higher installation accuracy may be obtained for a position and a deflection angle of the plane grating 320 on the base 310 by operating the first adjusting parts 330, so as to meet a requirement of the plane grating 320 for reference.
The first adjusting member 330 may be an adjusting pad or an adjusting bolt. When the first adjusting member 330 is an adjusting pad, it is only necessary to directly pad the first adjusting member between the bottom of the base 310 and the reading head mounting plate 100; during debugging, the height difference between the top surface of the base 310 and the top surface of the reading head mounting plate 100 and the levelness of the base 310 can be adjusted by replacing gaskets with different thicknesses. When the first adjusting member 330 is an adjusting bolt, it is directly screwed to the base 310; in the adjustment, the height difference between the base 310 and the top surface of the reading head mounting plate 100 and the levelness of the base 310 can be adjusted by screwing the adjusting bolt.
Preferably, the number of the first adjusting members 330 is three, and the three first adjusting members 330 are uniformly distributed at the bottom of the base 310, so that the three first adjusting members 330 can form a triangular support for the base 310, and thus, under the support of the three first adjusting members 330, the base 310 is more stable and is not prone to shaking, and thus, the installation accuracy of the reading head calibration tool 300 and further the installation accuracy of the reading head 200 can be ensured.
Specifically, at least two second adjusting pieces 340 can be installed on the side surface of the base 310 opposite to the reading head installation disc 100, and by utilizing the abutting fit of the second adjusting pieces 340 and the reading head installation disc 100, the second adjusting pieces 340 can adjust the deflection angle of the base 310 relative to the reading head installation disc 100 in the horizontal direction, so that higher installation accuracy can be obtained by operating the second adjusting pieces 340 on the deflection angle of the plane grating 320 on the base 310, and the requirement of the plane grating reference datum can be met.
The second adjusting member 340 may be an adjusting pad or an adjusting bolt. When the second adjusting member 340 is an adjusting pad, it is only necessary to directly pad the adjusting pad between the side surface of the base 310 and the reading head mounting plate 100; during debugging, the relative angle between the base 310 and the reading head mounting plate 100 in the horizontal direction can be adjusted by replacing gaskets with different thicknesses. When the second adjusting member 340 is an adjusting bolt, it is directly screwed on the base 310; in the adjustment, the relative angle between the base 310 and the reading head mounting plate 100 in the horizontal direction can be adjusted by screwing the adjusting bolt.
Specifically, the base 310 may be provided with a limiting column 350, and the limiting column 350 may be used to abut against and limit the edge of the reading head mounting disk 100, so that the base 310 and the reading head mounting disk 100 may be more accurately fitted.
Preferably, the base 310 and the reading head mounting plate 100 can be fixedly connected through a threaded connector, and have high reliability and detachability.
Specifically, a through hole 312 is formed in the middle of the base 310, and correspondingly, a threaded hole is formed in the reading head mounting plate 100, and the threaded connector can penetrate through the through hole 312 in the base 310 and be matched with the threaded hole in the reading head mounting plate 100, so that the reading head calibration tool 300 and the reading head mounting plate 100 can be locked.
The base 310 may further be provided with a through glue injection hole 311, and one end of the glue injection hole 311 extends to the plane grating 320, so that glue can be injected through the glue injection hole 311 to bond the plane grating 320 to the base 310.
In summary, the embodiment of the present invention discloses a reading head calibration tool 300, which overcomes many technical defects of the conventional reading head maintenance method. The reading head calibration tool 300 provided by the embodiment of the utility model can realize the purpose of debugging the reading head 200 on site, and when the reading head 200 breaks down and needs to be replaced, the reading head does not need to be returned to a factory for replacement, thereby shortening the maintenance period and reducing the cost.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The reading head calibration tool is characterized by comprising a base (310) and a plane grating (320), wherein the plane grating (320) is installed on the base (310), the base (310) is used for being installed on a reading head installation disc (100) of a workpiece table, and the plane grating (320) is used for being opposite to the upper end face of a reading head (200) installed on the reading head installation disc (100).
2. The reading head calibration tool according to claim 1, wherein at least two first adjusting pieces (330) are mounted at the bottom of the base (310), and the first adjusting pieces (330) are used for being abutted and matched with the workpiece table, adjusting the height difference between the top surface of the base (310) and the top surface of the reading head mounting plate (100) and adjusting the levelness of the base (310).
3. The reading head calibration fixture according to claim 2, wherein the first adjusting member (330) is an adjusting pad or an adjusting bolt.
4. The reading head calibration fixture according to claim 2, wherein the number of the first adjusting members (330) is three, and the three first adjusting members (330) are uniformly distributed at the bottom of the base (310).
5. The reading head calibration tool according to claim 1, wherein at least two second adjusting members (340) are mounted on the side surface of the base (310) opposite to the reading head mounting disc (100), and the second adjusting members (340) are used for being in abutting fit with the reading head mounting disc (100) and adjusting the deflection angle of the base (310) relative to the reading head mounting disc (100) in the horizontal direction.
6. The reading head calibration tool according to claim 5, wherein the second adjusting member (340) is an adjusting pad or an adjusting bolt.
7. The reading head calibration tool according to claim 1, wherein a limiting column (350) is arranged on the base (310), and the limiting column (350) is used for being abutted against and limited by the edge of the reading head mounting plate (100).
8. The reading head calibration fixture according to any one of claims 1 to 7, wherein the base (310) and the reading head mounting plate (100) are fixedly connected by a threaded connection.
9. The reading head calibration tool according to claim 8, wherein a through hole (312) is formed in the middle of the base (310), a threaded hole is formed in the workpiece table, and the through hole (312) and the threaded hole are both matched with the threaded connecting piece.
10. The reading header calibration tool according to any one of claims 1-7, wherein the base (310) further defines a through-hole (311), and one end of the through-hole (311) extends to the plane grating (320).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123301137.5U CN216925457U (en) | 2021-12-24 | 2021-12-24 | Reading head calibration tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123301137.5U CN216925457U (en) | 2021-12-24 | 2021-12-24 | Reading head calibration tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216925457U true CN216925457U (en) | 2022-07-08 |
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ID=82254883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123301137.5U Active CN216925457U (en) | 2021-12-24 | 2021-12-24 | Reading head calibration tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216925457U (en) |
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2021
- 2021-12-24 CN CN202123301137.5U patent/CN216925457U/en active Active
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