CN216308870U - Verticality measuring device for hole - Google Patents
Verticality measuring device for hole Download PDFInfo
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- CN216308870U CN216308870U CN202120202249.6U CN202120202249U CN216308870U CN 216308870 U CN216308870 U CN 216308870U CN 202120202249 U CN202120202249 U CN 202120202249U CN 216308870 U CN216308870 U CN 216308870U
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Abstract
The utility model discloses a verticality measuring device for holes, which comprises: and installing a positioning component, a standard rod, a measuring head component and a measuring meter. The mounting and positioning assembly is used for being inserted into a tested hole so as to mount and support a tested part and enable the axis of the tested hole to extend in the vertical direction. The standard rod is used for being inserted into the reference hole and converting the deviation angle of the axis of the measured hole relative to a vertical plane into the deviation angle of the axis of the standard rod relative to a horizontal plane. The measuring head component is used for respectively abutting against the excircle of the standard rod through two measuring points on the measuring head component so as to convert the deflection angle of the axis of the standard rod relative to the horizontal plane into the deflection angle of the installation center line of the measuring head component relative to the vertical plane. The measuring gauge is used for striking the gauge and abutting against the measuring head component to display reading change, if the reading change is not larger than an actual calculated value, the perpendicularity of the measured hole relative to the reference hole meets the design requirement, and otherwise, the perpendicularity of the measured hole relative to the reference hole does not meet the design requirement.
Description
Technical Field
The utility model relates to the technical field of hole perpendicularity measurement, in particular to a hole perpendicularity measuring device.
Background
Taking the measurement of the part (torsion cylinder) shown in fig. 1 as an example, the current method for measuring the perpendicularity of the inner hole to the reference hole a is as follows:
carrying out projection measurement by an imager; and (3) cutting the part in half, finding the central lines of the two holes under the projection of an imager, and calculating and judging by a computer to obtain the verticality.
Measuring three coordinates; and (3) adopting a three-coordinate measuring method, adopting a three-coordinate probe to collect points, and judging the verticality by a computer.
The cost is too high because the parts need to be cut by adopting an imager for measurement; the cut part is only a certain section, and the error of the measurement result is large; the parts are not easy to align, the time consumption is long, the measurement efficiency is low, the measurement waiting time is too long, and the processing efficiency is low.
When three-coordinate measurement is adopted, the measuring head needs to convert the angle, and the measurement error is large; moreover, the single part needs to be measured by a manual operation instrument to collect a plurality of points, which is long in time consumption, low in efficiency, large in measurement workload and high in labor and equipment cost.
SUMMERY OF THE UTILITY MODEL
The utility model provides a hole perpendicularity measuring device, which aims to solve the technical problems of high measuring cost, low measuring efficiency and large measuring error in the conventional measuring mode.
The technical scheme adopted by the utility model is as follows:
the utility model provides a hole is with straightness measuring device that hangs down for whether the straightness that hangs down of measured hole relative benchmark hole satisfies the design requirement on measuring the part that awaits measuring, hole is with straightness measuring device that hangs down includes: installing a positioning component, a standard rod, a measuring head component and a measuring meter; the mounting and positioning assembly is used for being inserted into a tested hole so as to mount and support a tested part and enable the axis of the tested hole to extend along the vertical direction; the standard rod is used for being inserted into the reference hole and converting the deflection angle of the axis of the measured hole relative to a vertical plane into the deflection angle of the axis of the standard rod relative to a horizontal plane; the measuring head component is used for respectively abutting against the excircle of the standard rod through two measuring points on the measuring head component so as to convert the deflection angle of the axis of the standard rod relative to the horizontal plane into the deflection angle of the installation center line of the measuring head component relative to the vertical plane; the measuring gauge is used for striking the gauge and abutting against the measuring head component to display reading change, if the reading change is not larger than an actual calculated value, the perpendicularity of the measured hole relative to the reference hole meets the design requirement, and otherwise, the perpendicularity of the measured hole relative to the reference hole does not meet the design requirement.
Furthermore, the measuring head component comprises a mounting bracket supported on the ground, a mounting rod rotatably connected with the mounting bracket, and a measuring head connected to the bottom end of the mounting rod; the mounting rod and the part to be measured arranged on the mounting positioning assembly are coaxially arranged, and the measuring meter striking top abuts against the outer circle of the mounting rod; the two measuring points are oppositely arranged and are respectively connected to the measuring head.
Furthermore, the measuring head comprises a horizontal rod vertically fixed with the bottom end of the mounting rod, and two ends of the horizontal rod are symmetrically arranged relative to the axis of the mounting rod; the two measuring points are respectively connected to the lower surfaces of the two ends of the horizontal rod and are located at the same vertical height.
Further, the distance from the top supporting point of the measuring meter, which supports the mounting rod, to the connecting point of the mounting rod and the horizontal rod is S, and the distance from the measuring point to the connecting point is S/2.
Further, it is 2L to establish actual calculation value, and the straightness that hangs down is X, and the length of benchmark hole is K, and the distance that the top of mounting bar was supported to the meter top was supported the tie point that the mounting bar links to each other with the horizon bar is S, then:
further, the measuring points and the horizontal rods are integrally machined and formed.
Furthermore, an abutting surface used for abutting against the meter tip of the measuring meter is arranged on the outer circle of the mounting rod, and the abutting surface is a plane extending vertically.
Furthermore, the standard rod comprises an installation section matched with the reference hole and measurement sections connected to two ends of the installation section; the installation section and the two measuring sections are coaxially arranged.
Furthermore, the mounting and positioning assembly comprises a positioning rod and a clamping seat for vertically mounting the positioning rod; the upper end of the positioning rod is used for being inserted into a tested hole of a part to be tested along the axial direction so as to be used for installing and supporting the part to be tested, and the lower end of the positioning rod is used for being installed into the clamping seat so as to support the part to be tested along the vertical direction.
Further, when the measuring head assembly measures the standard rod located at the initial position and the standard rod rotated by 180 degrees from the initial position twice, if the absolute value of the difference between the two readings of the measuring meter is not greater than the actual calculated value 2L, the perpendicularity of the measured hole relative to the reference hole meets the design requirement, otherwise, the perpendicularity of the measured hole relative to the reference hole does not meet the design requirement.
The utility model has the following beneficial effects:
when the hole perpendicularity measuring device is used for measuring, the operation is simple, whether the perpendicularity meets the design requirement or not can be rapidly and visually known through the reading change of the measuring meter, and therefore the problems that the measuring cost is high, the measuring error is large, the measuring efficiency is low, and the manpower and equipment cost are increased in the mode of adopting an imager and three-coordinate measurement are solved; the verticality measuring device for the hole solves the verticality measuring problem of parts such as vertical holes in similar space by the design and measurement principle of the verticality measuring device for the hole, and the design and measurement principle is worthy of popularization; the detection operation is quick and convenient, the measurement is accurate and efficient, the quick measurement of large-batch parts can be realized, and unqualified parts can be found in time, so that the qualification rate of the large-batch parts is greatly improved, and the quality and the efficiency are both ensured.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic cross-sectional structural view of a part to be measured;
FIG. 2 is a schematic view of a hole of a preferred embodiment of the present invention in a state where it is measured by a verticality measuring apparatus;
FIG. 3 is a first schematic diagram of a calculation process;
FIG. 4 is a schematic diagram of the second estimation process.
Description of the figures
10. A part to be tested; 101. a hole to be tested; 102. a reference hole; 20. installing a positioning component; 21. positioning a rod; 22. a clamping seat; 30. a standard bar; 31. an installation section; 32. a measuring section; 40. a probe assembly; 41. mounting a rod; 411. a butting face; 42. a measuring head; 421. a horizontal bar; 422. measuring points; 50. and (6) measuring the meter.
Detailed Description
The embodiments of the utility model will be described in detail below with reference to the accompanying drawings, but the utility model can be embodied in many different forms, which are defined and covered by the following description.
Referring to fig. 1 and 2, a preferred embodiment of the present invention provides a verticality measuring apparatus for holes, which is used for measuring whether the verticality of a hole 101 to be measured on a part 10 to be measured relative to a reference hole 102 meets design requirements, and the verticality measuring apparatus for holes comprises: the positioning unit 20, the gauge bar 30, the probe unit 40, and the meter 50 are mounted. The mounting and positioning assembly 20 is used for being inserted into a tested hole 101 to mount and support a tested part, and enables the axis of the tested hole 101 to extend in the vertical direction. The master rod 30 is used for being inserted into the reference hole 102 to convert the deviation angle of the axis of the hole 101 to be measured from the vertical plane into the deviation angle of the axis of the master rod 30 from the horizontal plane. The measuring head assembly 40 is used for respectively abutting against the outer circle of the standard rod 30 through two measuring points 422 on the measuring head assembly so as to convert the deviation angle of the axis of the standard rod 30 relative to the horizontal plane into the deviation angle of the installation center line of the measuring head assembly 40 relative to the vertical plane. The measuring gauge 50 is used for striking a gauge top to abut against the measuring head assembly 40 to display reading change, if the reading change is not larger than an actual calculated value, the verticality of the measured hole 101 relative to the reference hole 102 meets the design requirement, otherwise, the verticality of the measured hole 101 relative to the reference hole 102 does not meet the design requirement.
When the hole verticality measuring device is used for measuring whether the verticality of a measured hole 101 on a to-be-measured part 10 relative to a reference hole 102 meets the design requirement, firstly, the mounting and positioning assembly 20 is inserted into the measured hole 101 of the to-be-measured part 10 to mount and support the to-be-measured part 10, and the axis of the to-be-measured hole 101 extends along the vertical direction; then inserting the standard rod 30 into the reference hole 102 to convert the deviation angle of the axis of the hole 101 to be measured relative to the vertical plane into the deviation angle of the axis of the standard rod 30 relative to the horizontal plane; then, the two measuring points 422 on the measuring head assembly 40 respectively prop against the excircle of the standard rod 30 so as to convert the deflection angle of the axis of the standard rod 30 relative to the horizontal plane into the deflection angle of the installation center line of the measuring head assembly 40 relative to the vertical plane; and finally, striking a gauge by using the gauge 50 to prop against the measuring head assembly 40 to display reading change, wherein if the reading change quantity of the gauge 50 is not more than an actual calculated value, the verticality of the measured hole 101 relative to the reference hole 102 meets the design requirement, otherwise, the verticality of the measured hole 101 relative to the reference hole 102 does not meet the design requirement.
When the hole perpendicularity measuring device is used for measuring, the operation is simple, whether the perpendicularity meets the design requirement or not can be rapidly and visually known through the reading change of the measuring meter 50, and therefore the problems that the measuring cost is high, the measuring error is large, the measuring efficiency is low, and the manpower and equipment cost are increased in the mode of adopting an imager and three-coordinate measurement are solved; the verticality measuring device for the hole solves the verticality measuring problem of parts such as vertical holes in similar space by the design and measurement principle of the verticality measuring device for the hole, and the design and measurement principle is worthy of popularization; the detection operation is quick and convenient, the measurement is accurate and efficient, the quick measurement of large-batch parts can be realized, and unqualified parts can be found in time, so that the qualification rate of the large-batch parts is greatly improved, and the quality and the efficiency are both ensured.
Alternatively, as shown in fig. 2, the measuring head assembly 40 includes a mounting bracket (not shown) supported on the ground, a mounting rod 41 rotatably connected to the mounting bracket, and a measuring head 42 connected to a bottom end of the mounting rod 41. The mounting rod 41 and the part to be measured 10 mounted on the mounting and positioning assembly 20 are coaxially arranged, and the measuring meter 50 is abutted against the outer circle of the mounting rod 41. The two measuring points 422 are arranged oppositely and are respectively connected to the measuring head 42.
In this alternative, as shown in fig. 2, the measuring head 42 includes a horizontal bar 421 fixed perpendicularly to the bottom end of the mounting bar 41, and both ends of the horizontal bar 421 are arranged symmetrically with respect to the axis of the mounting bar 41. The two measuring points 422 are respectively connected to the lower surfaces of the two ends of the horizontal rod 421, and the two measuring points 422 are located at the same vertical height. In the scheme of the utility model, because the axis of the hole 101 to be measured on the part 10 to be measured extends along the vertical direction under the action of the mounting and positioning component 20, the deflection angle of the axis of the hole 101 to be measured relative to the vertical plane is converted into the deflection angle of the axis of the standard rod 30 relative to the horizontal plane; since the installation rod 41 and the part to be measured 10 installed on the installation positioning assembly 20 are coaxially arranged, the two ends of the horizontal rod 421 are symmetrically arranged about the axis of the installation rod 41, and the two measuring points 422 are located at the same vertical height, the deflection angle of the axis of the standard rod 30 relative to the horizontal plane is converted into the deflection angle of the axis of the installation rod 41 relative to the vertical plane; the measuring head 42, i.e. the tip of the dial indicator, abuts against the outer wall surface of the mounting rod 41, so that whether the verticality of the measured hole 101 relative to the reference hole 102 meets the design requirement can be visually judged through the variation of the reading of the dial indicator, and before the dial indicator is measured, the dial indicator is adjusted to zero after a large amount of dial indicator is measured, so that the reading of the dial indicator is always positive, and the variation of the reading of the dial indicator is related to the verticality, as shown in fig. 1, the verticality requirement is 0.02, when the variation of the reading of the dial indicator is equal to or less than 0.088, it is indicated that the verticality of the measured hole 101 relative to the reference hole 102 meets the design requirement, and when the variation of the reading of the dial indicator is greater than 0.088, it is indicated that the verticality of the measured hole 101 relative to the reference hole 102 does not meet the design requirement.
In this alternative, as shown in fig. 2, in order to accurately convert the deflection angle of the axis of the standard rod 30 relative to the horizontal plane into the deflection angle of the axis of the mounting rod 41 relative to the vertical plane, in this embodiment, the distance from the top point where the measuring gauge 50 abuts against the mounting rod 41 to the connection point where the mounting rod 41 is connected with the horizontal rod 421 is set to S, and the distance from the measuring point 422 to the connection point is set to S/2, and this relationship is set, so that the measuring head assembly 40 is simple in structure and easy to manufacture.
During actual calculation, if an actual calculation value is 2L, a perpendicularity is X, a length of the reference hole 102 is K, and a distance from a top abutting point of the measuring gauge 50 abutting against the mounting rod 41 to a connecting point of the mounting rod 41 and the horizontal rod 421 is S, then:
the formula derivation process is as follows:
as shown in figures 3 and 4 of the drawings,
then:
in a particular embodiment of the present invention,
when the reading variation of the dial indicator is not more than 0.088, the verticality of the measured hole 101 relative to the reference hole 102 meets the design requirement.
Preferably, as shown in fig. 2, the measuring point 422 and the horizontal rod 421 are integrally formed, so as to simplify the processing of the measuring head 42 and stabilize the overall structure of the measuring head assembly 40.
Preferably, as shown in fig. 2, an outer circle of the mounting rod 41 is provided with an abutting surface 411 for abutting against a tip of the measuring gauge 50, and the abutting surface 411 is a plane extending in the vertical direction. The plane is arranged to abut against the tip of the measuring meter 50, so that the measuring meter 50 can stably abut against the mounting rod 41, and the measuring precision of the striking meter is improved.
Alternatively, as shown in fig. 2, the reference rod 30 includes a mounting section 31 disposed to be engaged with the reference hole 102, and measuring sections 32 connected to both ends of the mounting section 31. The installation section 31 and the two measurement sections 32 are coaxially arranged. Because the installation section 31 is matched with the reference hole 102, the installation error between the standard rod 30 and the reference hole 102 can be reduced, the conversion precision of converting the deflection angle of the axis of the detected hole 101 relative to the vertical plane into the deflection angle of the axis of the standard rod 30 relative to the horizontal plane is improved, and the detection precision of verticality is further improved.
Alternatively, as shown in fig. 2, the mounting and positioning assembly 20 includes a positioning rod 21, and a clamping seat 22 for vertically mounting the positioning rod 21. The upper end of the positioning rod 21 is used for being inserted into the tested hole 101 of the part to be tested 10 along the axial direction for installing and supporting the part to be tested, and the lower end of the positioning rod 21 is used for being installed into the clamping seat 22 for supporting the part to be tested 10 along the vertical direction.
In this alternative, the clamping seat 22 is an electric chuck, which facilitates clamping and disassembling the positioning rod 21.
Optionally, in order to improve the measurement accuracy of the perpendicularity, in this alternative, the measuring head assembly 40 measures the standard rod 30 located at the initial position and the standard rod 30 rotated by 180 ° from the initial position twice, and after the first measurement, the gauge 50 is pressed to zero, and then the second measurement is performed, if the absolute value of the difference between the two readings of the gauge 50 is not greater than the actually calculated value 2L, the perpendicularity of the measured hole 101 with respect to the reference hole 102 meets the design requirement, otherwise, the perpendicularity of the measured hole 101 with respect to the reference hole 102 does not meet the design requirement. The standard rod 30 positioned at the initial position and the standard rod 30 rotated by 180 degrees from the initial position are measured twice, so that the influence of the manufacturing error of the standard rod 30 on the measurement precision of the verticality is reduced, and the measurement precision of the verticality is further improved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The verticality measuring device for the hole is used for measuring whether the verticality of a measured hole (101) on a part (10) to be measured relative to a reference hole (102) meets the design requirement or not, and comprises: installing a positioning component (20), a standard rod (30), a measuring head component (40) and a measuring meter (50);
the mounting and positioning assembly (20) is used for being inserted into the tested hole (101) to mount and support the tested part, and the axis of the tested hole (101) extends along the vertical direction;
the standard rod (30) is used for being inserted into the reference hole (102) so as to convert the deviation angle of the axis of the hole to be measured (101) relative to a vertical plane into the deviation angle of the axis of the standard rod (30) relative to a horizontal plane;
the measuring head component (40) is used for respectively abutting against the excircle of the standard rod (30) through two measuring points (422) on the measuring head component so as to convert the deflection angle of the axis of the standard rod (30) relative to the horizontal plane into the deflection angle of the installation center line of the measuring head component (40) relative to the vertical plane;
the measuring gauge (50) is used for striking a gauge to abut against the measuring head assembly (40) to display reading change, if the reading change is not larger than an actual calculated value, the verticality of the measured hole (101) relative to the reference hole (102) meets the design requirement, and otherwise, the verticality of the measured hole (101) relative to the reference hole (102) does not meet the design requirement.
2. Perpendicularity measuring device for holes, according to claim 1,
the measuring head assembly (40) comprises a mounting bracket supported on the ground, a mounting rod (41) rotatably connected with the mounting bracket, and a measuring head (42) connected to the bottom end of the mounting rod (41);
the mounting rod (41) and the part to be measured (10) arranged on the mounting positioning assembly (20) are coaxially arranged, and the measuring meter (50) is abutted against the outer circle of the mounting rod (41);
the two measuring points (422) are oppositely arranged and are respectively connected to the measuring head (42).
3. Perpendicularity measuring device for holes according to claim 2,
the measuring head (42) comprises a horizontal rod (421) vertically fixed with the bottom end of the mounting rod (41), and two ends of the horizontal rod (421) are symmetrically arranged about the axis of the mounting rod (41);
the two measuring points (422) are respectively connected to the lower surfaces of the two ends of the horizontal rod (421), and the two measuring points (422) are located at the same vertical height.
4. Perpendicularity measuring device for holes according to claim 3,
and setting the distance from the top abutting point of the measuring meter (50) abutting against the mounting rod (41) to the connecting point of the mounting rod (41) and the horizontal rod (421) to be S, and setting the distance from the measuring point (422) to the connecting point to be S/2.
5. Perpendicularity measuring device for holes, according to claim 4,
setting an actual calculated value as 2L, a verticality as X, a length of a reference hole (102) as K, and a distance from a top abutting point of the measuring meter (50) abutting against the mounting rod (41) to a connecting point of the mounting rod (41) and the horizontal rod (421) as S, then:
6. perpendicularity measuring device for holes according to claim 3,
the measuring point (422) and the horizontal rod (421) are integrally formed.
7. Perpendicularity measuring device for holes according to claim 2,
and an abutting surface (411) which is used for abutting against the meter tip of the measuring meter (50) is arranged on the excircle of the mounting rod (41), and the abutting surface (411) is a plane which extends vertically.
8. Perpendicularity measuring device for holes, according to claim 1,
the standard rod (30) comprises an installation section (31) matched with the reference hole (102) and measurement sections (32) connected to two ends of the installation section (31);
the installation section (31) and the two measuring sections (32) are coaxially arranged.
9. Perpendicularity measuring device for holes, according to claim 1,
the mounting and positioning assembly (20) comprises a positioning rod (21) and a clamping seat (22) for vertically mounting the positioning rod (21);
the upper end of the positioning rod (21) is used for being inserted into the hole (101) to be measured of the part to be measured (10) along the axial direction so as to be used for installing and supporting the part to be measured, and the lower end of the positioning rod (21) is used for being installed into the clamping seat (22) so as to support the part to be measured (10) along the vertical direction.
10. Perpendicularity measuring device for holes, according to claim 1,
when the measuring head assembly (40) measures the standard rod (30) at the initial position and the standard rod (30) rotated by 180 degrees from the initial position twice, if the absolute value of the difference value of two readings of the measuring meter (50) is not more than the actual calculated value 2L, the verticality of the measured hole (101) relative to the reference hole (102) meets the design requirement, otherwise, the verticality of the measured hole (101) relative to the reference hole (102) does not meet the design requirement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120202249.6U CN216308870U (en) | 2021-01-25 | 2021-01-25 | Verticality measuring device for hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120202249.6U CN216308870U (en) | 2021-01-25 | 2021-01-25 | Verticality measuring device for hole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216308870U true CN216308870U (en) | 2022-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120202249.6U Active CN216308870U (en) | 2021-01-25 | 2021-01-25 | Verticality measuring device for hole |
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| Country | Link |
|---|---|
| CN (1) | CN216308870U (en) |
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2021
- 2021-01-25 CN CN202120202249.6U patent/CN216308870U/en active Active
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Address after: 412000 No. 1018, Hangfei Avenue, Lusong District, Zhuzhou City, Hunan Province Patentee after: Hunan Xingtu Aerospace and Spacecraft Manufacturing Co.,Ltd. Address before: Dong Jiaduan 412002 in Hunan province Zhuzhou city Lusong District Patentee before: AVIC POWER ZHUZHOU AVIATION PARTS MANUFACTURING Co.,Ltd. |
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