CN217424218U - Hole center distance detection tool - Google Patents
Hole center distance detection tool Download PDFInfo
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- CN217424218U CN217424218U CN202221004568.7U CN202221004568U CN217424218U CN 217424218 U CN217424218 U CN 217424218U CN 202221004568 U CN202221004568 U CN 202221004568U CN 217424218 U CN217424218 U CN 217424218U
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- calibration
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- center distance
- holes
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Abstract
The utility model provides a hole center distance detection tool, which comprises a calibration plate, a dial indicator, a measuring rod, a supporting block, a positioning block and a calibration pin; the measuring rod is arranged between the supporting block and the positioning block, the dial indicator is fixedly arranged on the supporting block, and the two ends of the checking plate are provided with checking holes; when the calibration is needed, the calibration pin and the positioning block are respectively arranged in the calibration holes at the two ends of the calibration plate. Before measurement, a calibration standard is firstly carried out on a calibration plate, a fixing pin is inserted into a corresponding calibration hole, a calibration pin is inserted into the other end calibration hole, a dial indicator is installed on a supporting block and fixed, and the hole distance is calibrated and measured by applying the principle of measuring the hole diameter by using the inner diameter dial indicator. The hole center distance detection tool is applicable to hole distance measurement with high precision, has the advantages of taking into account measurement of a three-coordinate measuring machine and a caliper, and has the advantages of simplicity and convenience in operation, small measurement error, convenience in field operation, suitability for large-batch high-frequency detection occasions and the like.
Description
Technical Field
The utility model belongs to the technical field of the distance measurement, a hole center-to-center distance detects instrument is related to.
Background
Generally, the center distance between two holes is measured by adopting a three-coordinate measuring method and a vernier caliper measuring method, the three-coordinate measuring method is high in measurement accuracy, but a special three-coordinate measuring machine needs to be purchased, so that the cost is high, meanwhile, special measuring personnel are needed, the timeliness of detection is poor, and the method is not suitable for large-batch high-frequency detection occasions. The method for measuring by using the vernier caliper can be operated on site only by using the vernier caliper of the universal gauge, but the measurement error is large, particularly the measurement error of the center distance between small holes with large center distance is usually about +/-0.05, and cannot meet the requirements of some application occasions.
SUMMERY OF THE UTILITY MODEL
To the problem that exists among the prior art, the utility model provides a hole centre-to-centre spacing detection instrument, this hole centre-to-centre spacing detection instrument is easy and simple to handle, and measuring error is little, and measurement accuracy is higher, is convenient for operate at the scene, and is applicable to big batch high frequency's detection occasion.
The utility model discloses a realize through following technical scheme:
a hole center distance detection tool comprises a dial indicator, a measuring mechanism and a calibration pin; the measuring mechanism comprises a measuring rod, a supporting block and a positioning block;
the supporting block and the positioning block are respectively arranged at two ends of the measuring rod, and the dial indicator is fixedly arranged on the supporting block and used for measuring the error value of the center distance of the output hole.
Preferably, the hole center distance detection tool further comprises a calibration plate, calibration holes are formed in two ends of the calibration plate, and when calibration is needed, the calibration pins and the positioning blocks are respectively installed in the calibration holes in two ends of the calibration plate.
Preferably, the verification holes at the two ends of the verification plate are arranged on one side of the verification plate in parallel.
Preferably, the positioning block is provided with a fixing pin; when the calibration is needed, the fixing pin is inserted into the calibration hole of the calibration plate; when the detection is needed, the fixing pin is inserted in the central hole of the part to be detected.
Preferably, the supporting block is provided with a through hole; and a measuring rod of the dial indicator penetrates through the through hole of the supporting block and is locked and fixed through a locking screw.
Preferably, the measuring head of the dial indicator penetrates through the through hole of the supporting block to be in surface contact with the calibration pin.
Preferably, the axis of the dial indicator is perpendicular to the axis of the calibration pin.
Preferably, the fit clearance between the calibration hole and the calibration pin is less than 0.01 mm.
Preferably, the checking plate, the measuring rod, the calibration pin, the supporting block and the positioning block are all made of tool steel.
Compared with the prior art, the utility model discloses following profitable technological effect has:
the utility model provides a hole centre-to-centre spacing detects instrument uses through mutually supporting between percentage table, the measuring mechanism who sets up and the demarcation round pin, and applicable in the higher hole centre-to-centre spacing measurement of precision, compromises three-coordinate measuring machine and slide caliper rule measuring advantage, has easy and simple to handle, and measuring error is little, and the accuracy is high, is convenient for at the site operation, and is applicable to the big batch detection occasion of high frequency.
Further, the utility model discloses at the aperture centre-to-centre spacing to relative position is fixed, the check-up board of preparation standard is provided with the check-up hole of standard pitch-row on the check-up board. Before measurement, a calibration standard is firstly carried out on the calibration plate, the fixing pin is inserted into the corresponding calibration hole, the calibration pin is inserted into the calibration hole at the other end, the dial indicator is installed on the supporting block and fixed, the hole diameter principle is measured by the inner diameter dial indicator, the hole distance is calibrated and measured, and the accuracy of the measurement result is effectively improved.
Further, the utility model discloses the control is checked the hole and is markd fit clearance between the round pin within 0.01mm, has reduced measuring error, has improved the accuracy of test result.
Further, the utility model discloses the axis that needs to keep the percentage table in the production installation and the axis mutually perpendicular of calibration round pin to improve the accuracy of test result.
Drawings
FIG. 1 is a schematic structural view of a center distance measuring tool according to the present invention;
FIG. 2 is a top view of a center-to-center distance measuring tool;
FIG. 3 is a front view of a center distance measuring tool;
FIG. 4 is a schematic structural diagram of a calibration plate;
FIG. 5 is a cross-sectional view of a calibration plate;
FIG. 6 is a schematic view of a partial structure of a measuring rod and a dial indicator;
FIG. 7 is a schematic view of the fixing pin and the supporting block;
in the figure: the calibration device comprises a calibration plate 1, a dial indicator 2, a measuring rod 3, a calibration pin 4, a supporting block 5, a positioning block 6, a locking screw 7, a calibration hole 8 and a fixing pin 9.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The utility model provides a pair of hole centre-to-centre spacing detects instrument carries out the check-up benchmark on the check-up plate earlier before the measurement. The method comprises the steps of inserting a measuring rod fixing pin into a corresponding checking hole, inserting a calibration pin into the other checking hole, installing a dial indicator on a measuring rod supporting block and fixing, ensuring that the measuring rod of the dial indicator is perpendicular to the axis of the calibration pin by the size of the supporting block, and checking and measuring the hole distance by using the inner diameter dial indicator to measure the aperture principle.
As shown in fig. 1-3, the tool for detecting the hole center distance comprises a calibration plate 1, a dial indicator 2, a measuring rod 3, a calibration pin 4, a supporting block 5, a positioning block 6, a locking screw 7, a calibration hole 8 and a fixing pin 9.
The measuring mechanism comprises a measuring rod 3, a supporting block 5 and a positioning block 6;
the supporting block 5 and the positioning block 6 are respectively arranged at two ends of the measuring rod 3, and the dial indicator 2 is fixedly arranged on the supporting block 5 and is used for measuring a standard error value of the center distance of the output hole; when the center distance of the holes needs to be measured, the calibration pin 4 and the positioning block 6 are installed in the center hole of the component to be measured. As shown in fig. 6, a through hole is formed on the supporting block 5; and a measuring rod of the dial indicator 2 is arranged in a through hole of the supporting block 5 in a penetrating way and is locked and fixed through a locking screw 7. Before measurement, a check reference is firstly carried out on a check plate. The method comprises the steps of inserting a measuring rod fixing pin into a corresponding checking hole, inserting a calibration pin into the other checking hole, installing and fixing a dial indicator on a measuring rod supporting block, and ensuring that the measuring rod of the dial indicator is perpendicular to the axis of the calibration pin by the size of the supporting block.
As shown in fig. 7, the positioning block 6 is provided with a fixing pin 9; when calibration is needed, the fixing pin 9 is inserted into the calibration hole 8 of the calibration plate 1; when needs examine, during fixed pin 9 inserts the centre bore of establishing the part that awaits measuring, the utility model discloses the application internal diameter percentage table measures the aperture principle, carries out the check-up and the measurement of pitch-row.
The specific working process is as follows:
the utility model discloses a hole centre-to-centre spacing detects instrument fixed pin 9 and inserts the part that awaits measuring downthehole, and it is fixed to install percentage table 2 and use locking screw 7 on supporting shoe 5, and the left and right sides swashs measuring mechanism, and the volume about 1mm is pressed down to percentage table 2 when making the measuring staff contact calibration pin 4 surfaces of percentage table 2, when the percentage table indicating value is the minimum, adjusts 2 dial plates of percentage table to "0" position. And at the moment, finishing the calibration of the measuring tool, taking out the calibrated measuring mechanism, mounting the measuring mechanism and the calibration pin on the measured workpiece according to the same method, swinging the measuring mechanism leftwards and rightwards, wherein the minimum indication value on the dial indicator is the error of the measuring center distance, and the sum of the measuring error and the reference dimension of the check plate is the final measuring dimension.
For example, the measurement center distance is 100 ± 0.03mm, the standard size of the calibration plate is set to 100mm, after calibration is completed, the indication value during measurement is-0.02 mm, and then the measurement value is 99.98mm, in the actual measurement process, the theoretical actual hole center distance, the calibration plate size and the hole center distance can be adjusted according to the sizes of the theoretical actual hole center distance, the calibration plate size and the hole center distance of the same type of components to be measured, and the theoretical hole center distance is used as the standard value of the components to be measured.
As a preferred embodiment of the present invention, as shown in fig. 4, the hole center distance detection tool further includes a calibration plate 1, both ends of the calibration plate 1 are provided with calibration holes 8, when calibration is required, the calibration pin 4 and the positioning block 6 are respectively installed in the calibration holes 8 at both ends of the calibration plate 1, the calibration holes 8 at both ends of the calibration plate 1 are arranged in parallel on one side of the calibration plate 1, and the hole center distance between the calibration holes 8 is the standard hole distance. Aiming at the center distance of the small holes with fixed relative positions, a standard check plate is manufactured, check holes with standard hole distances are formed in the check plate, and the fit clearance between the check holes and the calibration pins is guaranteed to be within 0.01 mm. When calibration is needed, the calibration pin 4 and the positioning block 6 are respectively arranged in the calibration holes 8 at the two ends of the calibration plate 1, so that the accuracy of the measurement result is effectively improved.
As the utility model discloses a preferred embodiment, the through-hole that the measuring head of percentage table 2 passed supporting shoe 5 with mark 4 surface contact of round pin, the axis of percentage table 2 and the axis mutually perpendicular who marks round pin 4 have reduced measuring error, have improved the accuracy of test result.
As the preferred embodiment of the present invention, the fit clearance between the calibration hole 8 and the calibration pin 4 is smaller than 0.01mm, so as to prevent the calibration pin from sliding during the test process and affecting the test result.
The checking plate 1, the measuring rod 3, the calibration pin 4, the supporting block 5 and the positioning block 6 are all made of tool steel.
The preferred specific test procedure is as follows:
the utility model discloses a hole centre-to-centre spacing detects instrument earlier carries out the check-up benchmark on the check-up plate before measuring, fixed pin 9 inserts in the corresponding check-up hole 8 on the check-up plate 1, insert calibration round pin 4 in the check-up plate 1 other one end check-up hole 8, it is fixed to install percentage table 2 and use locking screw 7 on supporting shoe 5, the left and right sides measuring mechanism sways, the volume about 1mm is pressed down to percentage table 2 when making the measuring staff contact calibration round pin 4 surface of percentage table 2, when the percentage table indicating value is the minimum, 2 dial plates of adjustment percentage table are to "0" position. And at the moment, finishing the calibration of the measuring tool, taking out the calibrated measuring mechanism, mounting the measuring mechanism and the calibration pin on the measured workpiece according to the same method, swinging the measuring mechanism leftwards and rightwards, wherein the minimum indication value on the dial indicator is the error of the measuring center distance, and the sum of the measuring error and the reference dimension of the check plate is the final measuring dimension. For example, the dimension of the center-to-center distance is 200. + -. 0.03mm, the standard dimension of the calibration plate is set to 200mm, and when the calibration is completed, the value is-0.02 mm at the time of measurement, and the measurement value is 199.98 mm. The utility model discloses at the aperture centre-to-centre spacing to relative position is fixed, the check-up board of preparation standard is provided with the check-up hole of standard hole distance on the check-up board, the effectual accuracy that improves the measuring result.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. The tool for detecting the center distance of the holes is characterized by comprising a dial indicator (2), a measuring mechanism and a calibration pin (4); the measuring mechanism comprises a measuring rod (3), a supporting block (5) and a positioning block (6);
the supporting block (5) and the positioning block (6) are respectively arranged at two ends of the measuring rod (3), and the dial indicator (2) is fixedly arranged on the supporting block (5) and used for measuring an error value of the center distance of the output hole.
2. The tool for detecting the hole center distance according to claim 1, further comprising a calibration plate (1), wherein calibration holes (8) are formed at two ends of the calibration plate (1), and when calibration is required, the calibration pin (4) and the positioning block (6) are respectively installed in the calibration holes (8) at two ends of the calibration plate (1).
3. The tool for detecting the center distance of the holes according to claim 2, wherein the checking holes (8) at two ends of the checking plate (1) are arranged on one side of the checking plate (1) in parallel, and the center distance of the holes between the checking holes (8) is a standard hole distance.
4. The tool for detecting the center distance of holes as claimed in claim 3, wherein the positioning block (6) is provided with a fixing pin (9); when calibration is needed, the fixing pin (9) is inserted into the calibration hole (8) of the calibration plate (1); when the detection is needed, the fixing pin (9) is inserted in the central hole of the part to be detected.
5. Tool for detecting the centre-to-centre distance of holes according to claim 3, characterised in that the fit clearance between the calibration hole (8) and the calibration pin (4) is less than 0.01 mm.
6. The tool for detecting the center distance of holes according to claim 1, wherein the supporting block (5) is provided with a through hole; and a measuring rod of the dial indicator (2) is arranged in a through hole of the supporting block (5) in a penetrating manner and is locked and fixed through a locking screw (7).
7. The tool for detecting the center-to-center distance of holes as claimed in claim 1, wherein the measuring head of the dial indicator (2) passes through the through hole of the supporting block (5) to be in surface contact with the calibration pin (4).
8. The tool for detecting the center distance of the holes as claimed in claim 1, wherein the axis of the dial indicator (2) and the axis of the calibration pin (4) are perpendicular to each other.
9. The tool for detecting the center distance of the holes according to claim 1, wherein the measuring rod (3), the calibration pin (4), the supporting block (5) and the positioning block (6) are made of tool steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221004568.7U CN217424218U (en) | 2022-04-27 | 2022-04-27 | Hole center distance detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221004568.7U CN217424218U (en) | 2022-04-27 | 2022-04-27 | Hole center distance detection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217424218U true CN217424218U (en) | 2022-09-13 |
Family
ID=83184638
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221004568.7U Active CN217424218U (en) | 2022-04-27 | 2022-04-27 | Hole center distance detection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217424218U (en) |
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2022
- 2022-04-27 CN CN202221004568.7U patent/CN217424218U/en active Active
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