KR200493007Y1 - Cylinder gage taster - Google Patents

Abstract

In the cylinder gauge tester according to an embodiment of the present invention, the cylinder gauge tester includes: a base plate (B); A cylinder gauge that is disposed on one side of the base plate (B) and can be fixed by inserting a cylinder gauge in the longitudinal direction of the rod (R), but includes a rod seating portion (20) and a clamp to place the rod (R) A cylinder gauge column 10 in which the fixing part 11 and the cylinder gauge fixing part 11 are disposed; A position adjusting part 300 capable of adjusting the position of the fixing part 11 up and down in correspondence with the size of the cylinder gauge on the cylinder gauge column 10; Arranged on one side of the fixed part 11, the cylinder gauge measuring anvil 21 is pressed against the pressure applied by the gauge precision sensor 30 to pressurize the upper side of the opposite side of the measuring part pressed by the sensor 30 A rod correction unit 100 having a structure that is inserted in a bar shape to maintain the straightness of the gauge rod R and can be withdrawn according to the outer diameter of the rod R; The cylinder gauge fixing part 11 is disposed at the front end, is seated on the guide (G), in response to the size of the cylinder gauge, the gauge precision sensor 30 and the sensor receiving part 31 a moving part that can move left and right ( 400); A support plate 201 fixed to one side of the guide G; A support bar 202 supporting the other side of the cylinder gauge measuring anvil 21 is disposed at a position corresponding to the measuring anvil 21 to which the sensor 30 is in contact with the support plate 100, the cylinder It includes a support part 200 that is detachable according to the size of the gauge, and the support bar 202 is a bush 210 of a replaceable structure is fastened and inserted and coupled to the support part 200, and the cylinder gauge measurement unit It is characterized in that it is a structure in which the support bar 202 is inserted and coupled by replacing the coupled bush 210 in response to it.

Description

Cylinder gauge tester {CYLINDER GAGE TASTER}

The present invention relates to a cylinder gauge tester for precisely measuring the performance of cylinder gauges and accurately calibrating the gauges within a range of tolerance.

A cylinder gauge is a cylinder bore gauge using the same principle as a dial gauge, and the measurement range is usually 6mm or more and 400mm or less. It is mainly used for precise measurement of parallelism errors and error ranges such as inner diameter, roundness, and machined grooves of the inner surface of cylinders of compressors, pumps and internal combustion engines.

At this time, the cylinder refers to the part where the piston reciprocates in the internal combustion engine, steam engine, and pump, and is also called a cylinder. In gasoline engines or diesel engines used as power of automobiles, fuel is injected into the cylinder with air and ignited, and the piston is moved by the explosive power.

Therefore, the cylinder is required to have heat and corrosion resistance, and the inner surface is a structure to prevent abrasion, and is made within the tolerance of the inner diameter required by the engine. However, indispensable to the movement of the piston, uneven wear is easily caused by frequent friction between the piston and the inner surface of the cylinder, and the inner diameter of the cylinder is thermally expanded depending on the temperature of the oil and gas, and the pressurization performance is degraded. This may cause errors in engines such as compressors and pumps.

Therefore, it is necessary to determine whether the cause of the error is due to a defect in the cylinder, and for this purpose, a cylinder gauge that can measure the error of the roundness and inner diameter of the cylinder is used.

These cylinder gauges must be equipped with the ability to precisely calibrate within the tolerance range after verifying and calibrating the gauge itself in order to accurately measure the error of the cylinder inner diameter and the tolerance range.

For example, precision calibration is essential for hydraulic and pneumatic and automotive engine cylinders, which can cause errors even with an inner diameter error of 0.002mm, and for this purpose, the accuracy performance of gauges is measured using a cylinder gauge verification and calibrator (tester). It is the same structure as in Figure 1.

Referring to FIG. 1, after fixing the cylinder gauge to the tester, a sensor disposed on one side presses the measuring anvil of the cylinder gauge in the other direction to measure the accuracy of the gauge. However, in this method, an error of 0.002mm may occur even at the moment when the measuring instrument presses the gauge in the other direction when calibrating a cylinder gauge having a small outer diameter. That is, as a result of an error in the accuracy calibration of the gauge, an error may occur in the error tolerance of the measured cylinder inner diameter, and it is unreliable whether the cylinder inner diameter measured by the gauge is within the tolerance range.

In the case of cylinder gauges, the sizes of cylinder gauges vary widely depending on the inner diameter and size of the cylinder, and therefore, there are various gauge testers that test their accuracy.

For example, in the case of cylinder gauges, there are gauges of various methods and sizes such as dial gauges, cylinder gauges, block gauges, etc. according to the shape and size of the cylinder, and a separate tester for calibration and calibration is required for each use.

In this regard, the cylinder gauge tester mainly aims to calibrate dial gauges and indicators. At this time, a separate part is required for calibration of the cylinder gauge, and the procedure for mounting and using the part is very difficult and not easy. That is, each tester and parts corresponding to each size and shape must be used, which has inefficient disadvantages such as calibration, measurement cost, storage cost, etc., and versatility and expandability as it is impossible to calibrate various types of cylinder gauges with a single tester. There is a shortcoming of this.

Therefore, a new way to solve this problem is needed.

Korean Registered Utility Model Publication No. 20-10124721

An object of the present invention is to provide a cylinder gauge tester that is easy to use, has improved accuracy, and has versatility capable of measuring various types of gauges.

In the cylinder gauge tester according to an example of the present invention to solve the above problem, in the cylinder gauge tester, the cylinder gauge tester is disposed on one side of the base plate (B) and the base plate (B), and the cylinder gauge A cylinder gauge column (10) including a cylinder gauge fixing part (11) in which a rod (R) seating part (20) is disposed that can be fixed by inserting the rod (R) in the longitudinal direction. ), on the cylinder gauge column 10, a position adjusting part 300 capable of adjusting the position of the fixing part 11 up and down according to the size of the cylinder gauge, and disposed on one side of the fixing part 11, The cylinder gauge fixing part 11 is arranged on one side of the cylinder gauge measuring anvil 21 fixed to the column 10, and the measuring anvil 21 pressurized by the sensor 30 in response to the pressure applied by the sensor 30 The rod (R) correction unit (100), which is a structure that is inserted in a bar shape to maintain the straightness of the cylinder gauge rod (R) by pressing the upper side of the opposite side of the rod (R), and can be withdrawn according to the outer diameter of the rod (R), A guide (G) that is disposed in front of the cylinder gauge column (10) and adjusts the position of the gauge precision sensor (30) left and right to correspond to the size of the cylinder gauge, and is disposed on the guide (G), and the sensor 30 The cylinder gauge measuring anvil 21 is disposed on the support plate 200 fixed on the guide G and is in contact with the sensor 30 receiving part 31 to accommodate the sensor 30. A support bar 202 for supporting the other side of) is disposed, and includes a support part that is detachable according to the size of the cylinder gauge, and the support bar 202 is a support part by fastening a bush 210 having a replaceable structure. It is inserted and coupled to, but is characterized in that the structure in which the support bar 202 is inserted and coupled by replacing the coupled bush 210 corresponding to the cylinder gauge measurement unit.

The cylinder gauge tester according to an example of the present invention has a rod calibration unit 100 and a support unit 200 for maintaining the straightness of the rod R, so that the accuracy of the tolerance range of cylinder gauges can be precisely calibrated. .

In addition, a position control unit 300 that adjusts the position of the fixing unit 11 in response to the cylinder gauge size, and adjusts the left and right positions of the sensor 30 and the sensor receiving unit 31 in response to the size and type of the cylinder gauge. By placing the moving part 400 and the guide G on which the moving part 400 is seated, it is possible to quickly and easily set gauges and indicators, as well as various sizes and types of gauges in one tester. It has versatility and expandability that can be precisely and quickly calibrated.

1 is a photograph showing a conventional cylinder gauge tester.
2 is a schematic perspective view of a cylinder gauge tester according to an embodiment of the present invention.
3 is a photograph showing a state before and after adjusting a moving part of a cylinder gauge tester according to an embodiment of the present invention on a guide.
4 is a photograph showing an example of using a cylinder gauge having a large length and an outer diameter of a rod according to an embodiment of the present invention.
The accompanying drawings are exemplified by reference for an understanding of the technical idea of the present invention, and the scope of the present invention is not limited thereto.

In the description of the present invention, when it is determined that the subject matter of the present invention may be unnecessarily obscured as matters apparent to those skilled in the art with respect to known functions related to the present invention, a detailed description will be omitted.

FIG. 2 is a schematic perspective view of a cylinder gauge tester according to an embodiment of the present invention, and FIG. 3 is a photograph showing a state before and after adjusting a moving part of the cylinder gauge tester according to an embodiment of the present invention on a guide. 4 is a photograph showing an example of using a cylinder gauge having a large length and outer diameter of a rod according to an embodiment of the present invention.

Hereinafter, a cylinder gauge tester according to an embodiment of the present invention will be described with reference to the drawings.

The cylinder gauge tester of the present invention macroscopically includes a base plate (B), a column (10) capable of fixing the cylinder gauge on the base plate (B), a position adjustment unit (300), a guide (G), a sensor (30) And a sensor receiving part 31 and a support part 400.

The cylinder gauge column 10 is disposed on one side of the base plate B, and includes a cylinder gauge fixing part 11 that can be inserted and fixed in the longitudinal direction of the cylinder gauge rod R at the front end. The cylinder gauge fixing part 11 has a structure to fix the cylinder gauge, and the rod seating part 20 is disposed to mount and fix the rod R of the cylinder gauge. For example, after the cylinder gauge rod R is inserted in the longitudinal direction and placed on the rod seating portion 20, the side of the rod R may be tightened and fixed by a clamp.

There are various types of cylinder gauges, and in particular, cylinder gauges used to measure the inner diameter of pipes have various lengths of the rod R depending on the size of the inner diameter to be measured. Accordingly, the position of the fixing part 11 can be adjusted up and down according to the length of the rod R of the cylinder gauge for calibration and calibration of cylinder gauges of various sizes. To this end, a position adjusting unit 300 capable of adjusting the position of the fixing unit 11 up and down is disposed on the cylinder gauge column 10.

That is, the cylinder gauge tester according to the embodiment of the present invention has a structure in which the cylinder gauge is inserted into the fixing part 11 in the longitudinal direction of the rod R, that is, left to right. Therefore, in the step of calibrating the accuracy of the cylinder gauge, the measuring anvil 21 of the cylinder gauge is disposed to be inserted and removed from the left and right. At this time, the sensor 30 measuring the accuracy of the measurement anvil 21 is disposed on the right side of the rod R to pressurize and decompress the measurement anvil 21 from right to left to measure the accuracy.

In the case of the cylinder gauge, as described above, it is to accurately measure whether the inner diameter of the pipe or the like is within the allowable range. For example, in the case of a cylinder requiring precision, such as an allowable error range of an inner diameter of 0.001mm to 0.003mm, a major accident may occur in the process when the cylinder gauge is measured for an error outside the difference of 0.001mm. Therefore, to prevent such errors, the accuracy of the cylinder gauge is measured with a cylinder gauge tester.

In other words, the accuracy and precision of a cylinder gauge tester that tests the accuracy of a cylinder gauge can affect the accuracy and precision of the cylinder gauge.

Accordingly, in the present invention, the rod calibration unit 100 is disposed on one side of the cylinder gauge measuring anvil 21 in order to improve the accuracy and precision of the cylinder gauge tester.

Referring to FIG. 2, the rod correction unit 100 presses one side of the rod R that is disposed on one side of the cylinder gauge measuring anvil 21 and fixed to the fixing unit 11. For example, when the sensor 30 presses the measurement anvil 21 of the rod R, the upper part of the opposite side of the measurement anvil 21 pressed by the sensor 30 is pressed in response to the pressure. At this time, the rod correction unit 100 can prevent the bending of the rod R by applying a pressure corresponding to the pressure of the sensor 30, thereby maintaining the straightness of the rod R. Therefore, it is possible to prevent calibration errors that may occur during the gauge test process due to the bending of the rod. At this time, the rod correction unit 100 may press one side of the measuring anvil 21, and if a detective does not affect the gauge test, its shape and coupling method are not limited. For example, it is inserted in a bar shape as shown in FIG. 2.

The rod calibration process of the rod correction unit 100 is as follows.

The sensor 30 sequentially presses the measuring anvil 21 and calibrates the measuring range of the cylinder gauge for each section. At this time, the straightness of the rod R may momentarily deviate from a predetermined range by the pressure that the sensor 30 presses the measurement anvil 21 to be finely bent. In order to prevent this, the sensor 30 may press the upper portion of the surface opposite to the surface on which the measurement anvil 21 is pressed, so that the straightness of the rod R can be kept constant. As a result of examining a cylinder gauge with a small outer diameter without pressing the upper part with the actual rod calibration unit 100, 0.003~0.007mm was measured, whereas the test after pressing the upper part with the rod (R) calibration unit 100 As a result, it was measured 0.001 to 0.005 mm, and a large error of about 0.002 mm was confirmed.

Furthermore, the cylinder gauge and the outer diameter of the rod R are different according to the size of the inner diameter of the cylinder, and the rod correction unit 100 can be withdrawn according to the outer diameter of the rod R by making the rod R in a bar shape such as a bolt. There is a structure. Therefore, it is possible to calibrate the accuracy of cylinder gauges with various outer diameters.

In particular, the cylinder gauge tester of the present invention is the position of the gauge precision sensor 30 at the front end of the cylinder gauge column 10, including the above-described position adjustment unit 300, rod calibration unit 100, so as to correspond to various sizes of the cylinder gauge. Arrange the guide (G) to adjust the left and right. The type of the guide is not particularly limited. For example, a precision LM guide can be used.

In this regard, in the case of a general cylinder gauge tester, the types of gauges that can be measured by one gauge tester are limited as shown in FIG. 1. Therefore, in order to test various types and sizes of gauges, there are generally a method of preparing various test devices according to the type and size of gauges, a method of setting using various parts, and a method of requesting a test institution. According to the above method, it is cumbersome, inconvenient, and takes a considerable amount of time to easily and precisely calibrate the accuracy of gauges having various types and sizes.

However, in the present invention, referring to FIG. 3, the above-described guide (G) is disposed in front of the base plate (B), and a sensor receiving unit 31 accommodating the sensor 30 is placed on the guide (G) to accommodate the sensor. The part 31 may move left and right along the guide G. This is referred to as the moving unit 400. Referring to FIG. 4, the test can be performed even when a cylinder gauge having a larger size than the tester is fixed, and the cylinder gauge of various sizes can be tested.

Meanwhile, on the guide G, in addition to the moving part 400 that can adjust the left and right position, the support part 200 is disposed on the left side of the guide G. The support part 200 includes a support plate 201 into which the support bar 202 is inserted, and is fixedly disposed on the guide G. Specifically, the support plate 201 is disposed at the upper end of the guide G and at the front end of the column 10. On the support plate 201, a support bar 202 supporting the other side of the measurement anvil 21 is inserted and coupled to correspond to the measurement anvil 21 to which the sensor 30 is in contact.

At this time, the support bar 202 has a bar shape, and a bush 210 of a structure that can be replaced so that it can be fixed to the support by wrapping the outer diameter of the various gauges such as cylinder gauges, indicators, micrometer heads, etc. ) Is fastened, and inserted and coupled to the support part 200.

For example, when the cylinder gauge is calibrated and removed, and the indicator is inserted into the support, the bush 210 corresponding thereto is replaced and coupled so that the outer diameter of the indicator is fixed in the insertion hole of the support. When the bush 210 assembly with the indicator inserted therein is inserted and coupled to the insertion hole of the support part 200, a bush 210 having various outer diameters is fastened to a single support bar 202, and cylinder gauges of various sizes, indicators, etc. Gauges can be calibrated.

The above-described support part 200 can be attached or detached according to the size of the cylinder gauge. For example, in the case of a cylinder gauge having a large outer diameter due to a large measuring range, the straightness of the rod R changes even when the sensor 30 presses the measuring anvil 21 after fixing the rod R to the fixing part 11 Is close to zero. Therefore, even if the rod (R) correction unit 100 and the support bar 202 do not support the side surface of the rod (R), the accuracy measurement of the gauge is not affected. Furthermore, it is preferable to use the support bar 202 detachably as shown in FIG. 4 when a cylinder gauge having a large outer diameter is fixed to the fixing part 11.

As described above, the cylinder gauge tester of the present invention uses a single cylinder gauge tester without using a separate gauge tester according to various sizes of cylinder gauges by providing a position control unit 300 and a guide G. In addition to being able to calibrate gauges of various sizes, it is possible to accurately and precisely calibrate a cylinder gauge measuring a precise size by placing a rod calibration unit 100. Further, there is an advantage of being able to easily use various measuring devices corresponding to the base material by fastening the replaceable bush 210 to the support part 200.

Meanwhile, the scope of protection of the present invention is not limited to the description and expression of the embodiments explicitly described above. In addition, it is added once again that the scope of protection of the present invention may not be limited due to obvious changes or substitutions in the technical field to which the present invention pertains.

Base plate: B
Rod: R
Fixed part:11
Column:10
Rod seat: 20
Position control unit: 300
Road correctional government: 100
Moving part: 400
Sensor: 30
Sensor receiving part: 31
Guide: G
Support: 200
Support plate:201
Support bar:202
Bush: 210
Measuring Anvil: 21

Claims (1)

In the cylinder gauge tester,
The cylinder gauge tester,
Base plate (B);
A cylinder gauge that is disposed on one side of the base plate (B) and can be fixed by inserting a cylinder gauge in the longitudinal direction of the rod (R), but includes a rod seating portion (20) and a clamp to place the rod (R) Fixing part 11,
A cylinder gauge column 10 on which the cylinder gauge fixing part 11 is disposed;
A position adjusting unit 300 capable of adjusting the position of the fixing unit 11 up and down in correspondence with the size of the cylinder gauge on the cylinder gauge column 10;
It is disposed on one side of the fixing part 11, has a structure that can be withdrawn according to the outer diameter of the rod R, and is located on the upper side of the opposite side of the surface of the measuring anvil 21 pressed by the sensor 30 to fix the fixing part ( 11) Pressurizes one side of the rod R fixed to the cylinder, but responds to the instantaneous bending of the rod out of a certain range by the pressure applied by the gauge precision sensor 30 to the cylinder gauge measuring anvil 21 Thus, when the sensor 30 presses the measurement anvil 21 of the rod R, the sensor 30 presses the upper side of the opposite side of the measurement unit to be pressurized to maintain the straightness of the cylinder gauge rod R in a bar shape. A rod correction unit 100 capable of accurately measuring a measurement error range of cylinder gauges by preventing the rod from being bent momentarily by being inserted to maintain the straightness of the rod (R);
Arranged at the front end of the cylinder gauge fixing part 11 and seated on the guide G, accommodates a gauge including rods of various lengths and measuring anvils of various widths corresponding to the size of the cylinder gauge inserted in the fixing part A moving unit 400 in which the gauge precision sensor 30 and the sensor receiving unit 31 can be moved left and right along the guide so as to be able to do so;
A support plate 201 fixed to one side of the guide G;
A support bar 202 supporting the other side of the cylinder gauge measuring anvil 21 is disposed at a position corresponding to the measuring anvil 21 to which the sensor 30 is in contact with the support plate 201, Includes a detachable support 200 to accommodate a cylinder gauge including a rod of various lengths and a measurement anvil of various widths according to the size of the gauge,
The support bar 202 is a bush 210 of a replaceable structure is fastened and inserted and coupled to the support 200, but by replacing the coupled bush 210 corresponding to the cylinder gauge measurement unit, the support bar 202 ) Can be inserted and combined,
A cylinder gauge tester having a universal structure capable of accommodating a cylinder gauge including rods of various lengths and measuring anvils of various widths according to the size of the cylinder gauge in one tester.

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