CN113251887B - Hole site detection device - Google Patents
Hole site detection device Download PDFInfo
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- CN113251887B CN113251887B CN202110492737.XA CN202110492737A CN113251887B CN 113251887 B CN113251887 B CN 113251887B CN 202110492737 A CN202110492737 A CN 202110492737A CN 113251887 B CN113251887 B CN 113251887B
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- 238000001514 detection method Methods 0.000 title claims abstract description 63
- 238000009434 installation Methods 0.000 claims abstract description 24
- 230000000149 penetrating effect Effects 0.000 claims abstract description 3
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
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- 238000012545 processing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
- G01B5/0004—Supports
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
Abstract
The invention discloses a hole position detection device which is used for detecting the centering degree of a hole to be detected on a workpiece to be detected, wherein the hole position detection device comprises an installation shaft sleeve, a pin shaft and a measurement piece, the axis of the installation shaft sleeve is aligned with a datum point on the workpiece to be detected, an installation channel is arranged in the middle of the installation shaft sleeve in a penetrating mode along the axial direction, the pin shaft is movably installed in the installation channel along the axial direction and provided with a detection end facing the workpiece to be detected, an adjusting structure is arranged between the pin shaft and the inner wall of the installation channel, the pin shaft is movably arranged relative to the installation shaft sleeve along a plane vertical to the axial direction in an adjustable mode, the pin shaft is provided with a detection state that the detection end is inserted into the hole to be detected, and the measurement piece is used for detecting the deviation value of the pin shaft relative to the installation shaft sleeve in the detection state. According to the technical scheme provided by the invention, the deviant of the hole to be detected on the workpiece to be detected is indirectly measured by measuring the deviant of the pin shaft relative to the mounting shaft sleeve, so that the problem that the existing hole site detection device needs to be taken down from a detection tool for measurement and is low in efficiency is solved.
Description
Technical Field
The invention relates to the field of checking tools, in particular to a hole site detection device.
Background
In the stamping process, the position of the stamping hole on the stamped workpiece deviates from a preset position due to various reasons, and in order to control the position of the stamping hole, the position of the stamping hole on the workpiece needs to be detected, a scribing pin is generally inserted into a pin sleeve, a stamping part is fixed on a detection tool, then the scribing pin is moved, when the scribing pin contacts the stamping part, the scribing pin is rotated along the center of a standard position, the radius of the scribing pin around the center of the standard position is generally larger than that of the stamping hole on the stamping part, the scribing pin leaves a scribing mark on the stamping part, and a hole position deviation value is calculated by measuring the distance between the marking mark and the edge of the hole, wherein the hole position deviation value is (X1-X2)/2, for example.
The distance from the hole edge to the marking edge is generally measured by a vernier caliper, and the part is required to be taken down from the checking fixture to be measured under the limitation of a measurement operation space, so that the labor intensity of detection personnel is increased, and the detection efficiency is reduced. The vernier caliper is greatly influenced by human factors, and the measurement error is easily caused to be larger.
Disclosure of Invention
The invention mainly aims to provide a hole site detection device, and aims to solve the problem that the existing hole site detection device needs to be taken down from a detection tool for measurement, and is low in efficiency.
In order to achieve the above object, the present invention provides a hole position detecting device for detecting the alignment degree of a hole to be detected on a workpiece to be detected, wherein the hole position detecting device comprises:
the mounting shaft sleeve is detachably assembled on the workpiece to be detected, so that the axis of the mounting shaft sleeve is aligned with a datum point on the workpiece to be detected, and a mounting channel penetrates through the middle of the mounting shaft sleeve along the axial direction;
the pin shaft is movably arranged in the mounting channel along the axial direction so as to be provided with a detection end which can be exposed outside the mounting channel and faces the workpiece to be detected, an adjusting structure is arranged between the pin shaft and the inner wall of the mounting channel so as to enable the pin shaft to be movably arranged relative to the mounting shaft sleeve along a plane vertical to the axial direction in an adjustable manner, and the pin shaft is provided with a detection state in which the detection end is inserted in the hole to be detected in the movable stroke; and (c) a second step of,
and the measuring part is used for detecting the deviation value of the pin shaft relative to the mounting shaft sleeve in the detection state.
Optionally, a first guide groove and a second guide groove are formed in the inner side wall of the mounting shaft sleeve along the radial direction of the mounting shaft sleeve;
the adjusting structure comprises a first movable block and a second movable block, the first movable block is movably arranged in the first guide groove along a first direction, the second movable block is movably arranged in the second guide groove along a second direction, and the first direction and the second direction are perpendicular to each other;
the pin shaft is provided with a first reference surface perpendicular to the first direction and a second reference surface perpendicular to the second direction, the first reference surface is in mutual abutting joint with the first movable block, and the second reference surface is in mutual abutting joint with the second movable block, so that the pin shaft is supported between the first movable block and the second movable block in a sliding mode.
Optionally, the adjusting structure further comprises a first pressure spring and a second pressure spring, one end of the first pressure spring is connected to the bottom wall of the first guide groove, and the other end of the first pressure spring is connected to the first movable block;
one end of the second pressure spring is connected to the bottom wall of the second guide groove, and the other end of the second pressure spring is connected to the second movable block.
Optionally, two first movable blocks and two second movable blocks are respectively provided, the two first movable blocks respectively abut against two sides of the pin shaft in the first direction, and the two second movable blocks respectively abut against two sides of the pin shaft in the second direction;
the first pressure springs are arranged between the first movable blocks and the bottom walls of the first guide grooves respectively, and the second pressure springs are arranged between the second movable blocks and the bottom walls of the second guide grooves respectively.
Optionally, the measuring part is a dial indicator.
Optionally, the mounting sleeve is radially provided with at least two measuring holes, one of the measuring holes extends along the first direction, and the other measuring hole extends along the second direction;
the dial indicator comprises an indicator body and a measuring head, the indicator body is used for being matched with the mounting shaft sleeve, the measuring head is arranged on the indicator body in a telescopic and movable mode and used for extending into each measuring hole, and the measuring head is abutted to the first reference surface or the second reference surface of the pin shaft in the detection state so as to measure the deviation value according to the telescopic amount of the measuring head.
Optionally, the mounting shaft sleeve includes a shaft sleeve and a fixing disc sequentially arranged along the axial direction, the shaft sleeve is provided with a first through hole along the axial direction, the fixing disc is provided with a second through hole along the axial direction, and the first through hole and the second through hole are coaxially arranged to form the mounting channel;
the end surface of the fixed disc, which is close to the shaft sleeve, is provided with at least two mounting grooves with openings facing the shaft sleeve along the radial direction, and each mounting groove forms each measuring hole;
the hole site detection device further comprises at least two guide rods, each guide rod is inserted into each measuring hole in a one-to-one correspondence mode so as to be provided with a matching end exposed on the outer peripheral side of the fixed disc, each guide rod is arranged in a hollow mode so that the measuring head can extend into the hollow mode, and the matching end of each guide rod is used for being abutted to the meter body.
Optionally, the detection end of the pin shaft is further provided with a pin head, the pin head is detachably connected with the pin shaft, and one end, far away from the pin shaft, of the pin head is at least partially arranged in a conical manner.
Optionally, the detection end has a first limiting protrusion annularly arranged on the periphery of the pin shaft, and the size of the first limiting protrusion is larger than the cross-sectional size of the installation channel.
Optionally, the one end of round pin axle keeping away from the test end still is equipped with the handle, the handle is followed the one end of installation passageway is to keeping away from the direction of test end stretches out, the handle has the ring and locates the spacing arch of second of handle periphery, the spacing arch of second is located the installation passageway outside, just the spacing bellied size of second is greater than the cross-sectional dimension of installation passageway.
In the technical scheme provided by the invention, as the mounting shaft sleeve is assembled on the workpiece to be detected, the axis of the mounting shaft sleeve is aligned with the datum point on the workpiece to be detected, the middle part of the mounting shaft sleeve is axially provided with the mounting channel in a penetrating way, the pin shaft is movably arranged in the mounting channel along the axial direction so as to be provided with the detection end which can be exposed out of the mounting channel and faces the workpiece to be detected, as the axis of the mounting shaft sleeve is aligned with the datum point, when the pin shaft is assembled in the mounting channel, the axis of the pin shaft is also aligned with the datum point, as an adjusting structure is arranged between the pin shaft and the inner wall of the mounting channel, the pin shaft is adjustably and movably arranged along a plane vertical to the axial direction relative to the mounting shaft sleeve, when the pin shaft is inserted in the hole to be detected, if the center of the hole to be detected deviates from the datum point, the pin shaft can be matched with the hole to be detected so that the pin shaft is in a detection state, the axis and the outer peripheral side of the pin shaft can deflect on a plane perpendicular to the axial direction at the same time, then the deflection value of the pin shaft relative to the mounting shaft sleeve is measured through the measuring piece, and the deflection value of the hole to be detected on the workpiece to be detected is indirectly measured through measuring the deflection value of the pin shaft relative to the mounting shaft sleeve, so that the problems that an existing hole position detection device needs to be taken down from a detection tool to carry out measurement, and efficiency is low are solved.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic perspective view of an embodiment of a hole site detecting device according to the present invention;
FIG. 2 is a schematic plan view of the hole site detecting apparatus shown in FIG. 1;
FIG. 3 is a schematic sectional view taken along line A-A of FIG. 2;
FIG. 4 is a schematic sectional view taken along line B-B of FIG. 2;
FIG. 5 is a schematic structural view of the pin and handle assembly of FIG. 1;
fig. 6 is a schematic diagram of a marking line of a scribe pin and an edge line of a hole to be detected in the prior art.
The reference numbers illustrate:
| reference numerals | Name(s) | Reference numerals | Name (R) |
| 100 | Hole |
3 | Adjusting structure |
| a | A first direction | 31 | A first movable block |
| b | Second direction | 32 | Second movable block |
| 1 | |
33 | First pressure spring |
| 11 | Measuring |
34 | |
| 12 | Shaft sleeve | 4 | |
| 13 | Fixed |
41 | Mating |
| 2 | |
5 | |
| 21 | First reference plane | 6 | Handle (CN) |
| 22 | |
61 | |
| 23 | First limit bulge |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.
It should be noted that, if directional indications (such as up, down, left, right, front, and back … …) are involved in the embodiment of the present invention, the directional indications are only used for explaining the relative position relationship between the components, the motion situation, and the like under a certain posture (as shown in the drawing), and if the certain posture is changed, the directional indications are changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B", including either A or B or both A and B. In addition, technical solutions between the embodiments may be combined with each other, but must be based on the realization of the technical solutions by a person skilled in the art, and when the technical solutions are contradictory to each other or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In the punching process, the punched hole on the punched workpiece deviates from the preset position due to various reasons, and the position of the punched hole of the workpiece needs to be detected in order to control the position of the punched hole. Referring to fig. 6, a pin sleeve is inserted into a scribing pin, a stamping part is fixed on a checking fixture, then the scribing pin is moved, when the scribing pin contacts the stamping part, the scribing pin is rotated along the center of a standard position, the radius of the scribing pin around the center is larger than that of a stamping hole on the stamping part, the scribing pin leaves a scribing mark on the stamping part, and a deviation value of the hole position, such as the deviation value of the X direction is (X1-X2)/2, is calculated by measuring the distance between the scribing mark and the edge of the hole. The distance from the hole edge to the scribing edge is generally measured by a vernier caliper, and the part is required to be taken down from the checking tool to be measured under the limitation of a measuring operation space, so that the labor intensity of detection personnel is increased, and the detection efficiency is reduced. The vernier caliper is used for measurement, which is greatly influenced by human factors, and easily causes large measurement errors.
In order to solve the above problems, the present invention provides a hole site detecting device 100 for detecting the alignment degree of a hole to be detected on a workpiece to be detected, and fig. 1 to 5 illustrate an embodiment of the hole site detecting device 100 according to the present invention.
Referring to fig. 1 to 4, the hole location detecting device 100 includes a mounting sleeve 1, a pin shaft 2 and a measuring member, wherein the mounting sleeve 1 is detachably mounted on the workpiece to be detected, so that an axis of the mounting sleeve 1 is aligned with a reference point on the workpiece to be detected, a mounting channel is axially arranged in the middle of the mounting sleeve 1, the pin shaft 2 is movably mounted in the mounting channel along the axial direction to have a detecting end exposed outside the mounting channel and facing the workpiece to be detected, an adjusting structure 3 is arranged between the pin shaft 2 and an inner wall of the mounting channel, so that the pin shaft 2 is movably and adjustably arranged along a plane perpendicular to the axial direction relative to the mounting sleeve 1, and the detecting end is inserted in the hole to be detected during a moving stroke of the pin shaft 2, the measuring part is used for detecting the deviant of the pin shaft 2 relative to the mounting shaft sleeve 1 in the detection state.
According to the technical scheme, as the mounting shaft sleeve 1 is assembled on the workpiece to be detected, the axis of the mounting shaft sleeve 1 is aligned with the datum point on the workpiece to be detected, the middle part of the mounting shaft sleeve 1 is provided with a mounting channel along the axial direction, the pin shaft 2 is movably arranged on the mounting channel along the axial direction so as to be provided with a detection end which can be exposed out of the mounting channel and faces the workpiece to be detected, as the axis of the mounting shaft sleeve 1 is aligned with the datum point, when the pin shaft 2 is assembled in the mounting channel, the axis of the pin shaft 2 is also aligned with the datum point, as the adjusting structure 3 is arranged between the pin shaft 2 and the inner wall of the mounting channel, the pin shaft 2 is movably arranged relative to the mounting shaft sleeve 1 along a plane vertical to the axial direction in an adjustable manner. It should be noted that, the pin shaft 2 is inserted into the hole to be detected, the size of the detection end of the pin shaft 2 is adapted to the hole to be detected, the diameters of the two holes are basically consistent to form clearance fit, when the pin shaft 2 is inserted into the hole to be detected, if the center of the hole to be detected deviates from the reference point, the pin shaft 2 is adapted to the hole to be detected so that the pin shaft 2 is in a detection state, the axis and the peripheral side of the pin shaft 2 both deviate on a plane perpendicular to the axial direction, then the deviation value of the pin shaft 2 relative to the mounting shaft sleeve 1 is measured by a measuring piece, the deviation value of the hole to be detected on the workpiece to be detected is indirectly measured by measuring the deviation value of the pin shaft 2 relative to the mounting shaft sleeve 1, so as to solve the problem that the existing hole position detection device 100 needs to be taken down from the detection tool for measurement, the problem of low efficiency.
Specifically, referring to fig. 3 to 5, in this embodiment, a first guide groove and a second guide groove are formed in an inner side wall of the mounting shaft sleeve 1 along a radial direction of the mounting shaft sleeve 1, the adjusting structure 3 includes a first movable block 31 and a second movable block 32, the first movable block 31 is movably disposed in the first guide groove along a first direction a, the second movable block 32 is movably disposed in the second guide groove along a second direction b, the first direction a and the second direction b are perpendicular to each other, the pin 2 has a first reference surface 21 perpendicular to the first direction a and a second reference surface 22 perpendicular to the second direction b, the first reference surface 21 and the first movable block 31 are abutted against each other, the second reference surface 22 and the second movable block 32 are abutted against each other, so that the pin 2 is slidably supported between the first movable block 31 and the second movable block 32, here, the first movable block 31, the second movable block 32 and the pin 2 are not fixedly connected to each other, and the first movable block 31 and the second movable block 32 support the pin 2 only in the first direction a and the second direction b, and the support mode in this embodiment is not limited to the support mode, and may be an elastic support, a cylinder mode, or the like. When the round pin axle 2 is followed the axial activity in-process of installation passageway, because the diameter of installation passageway is greater than the diameter of round pin axle 2, round pin axle 2 is in sufficient accommodation space has in the installation passageway, works as treat that inspection hole and benchmark hole have the skew, round pin axle 2 takes place the activity, round pin axle 2 is because of under the effect of movable block and guide way cooperation direction, first movable block 31 with second movable block 32 also restricts simultaneously round pin axle 2 follows respectively first direction an with second direction b activity makes round pin axle 2 can not take place to rotate.
Specifically, in this embodiment, the adjusting structure 3 further includes a first compression spring 33 and a second compression spring 34, one end of the first compression spring 33 is connected to the bottom wall of the first guide groove, and the other end is connected to the first movable block 31; second pressure spring 34 one end connect in the diapire of second guide way, the other end connect in the second movable block 32, work as when round pin axle 2 takes place the skew, can be right first pressure spring 33 with certain pressure is applyed to second pressure spring 34, makes through the mode that sets up the pressure spring round pin axle 2 is compressed tightly all the time, and does not take place to rotate, sets up simple structure like this.
Further, in order to stabilize and balance the force applied to the pin 2, in this embodiment, two first movable blocks 31 and two second movable blocks 32 are respectively provided, the two first movable blocks 31 respectively abut against two sides of the pin 2 in the first direction a, and the two second movable blocks 32 respectively abut against two sides of the pin 2 in the second direction b; the first pressure springs 33 are respectively arranged between the first movable blocks 31 and the bottom walls of the first guide grooves, and the second pressure springs 34 are respectively arranged between the second movable blocks 32 and the bottom walls of the second guide grooves, so that the pin shaft 2 is respectively subjected to forces from the movable blocks on two sides in the first direction a and the second direction b, and the pin shaft 2 is kept in a more stable detection state in the detection process.
Specifically, in this embodiment, the measuring member is a dial indicator, and the dial indicator is a meter-type general-purpose length measuring tool manufactured by using a precision rack and pinion mechanism, and the dial indicator is used for linearly moving a measuring rod slightly caused by a measured dimension, amplifying the movement through gear transmission, and turning the movement into rotation of a pointer on a dial, thereby reading the dimension of the measured dimension. The dial indicator is a measuring instrument which changes the linear displacement of a measuring rod into the angular displacement of a pointer by utilizing the transmission of a rack gear or a lever gear. Therefore, when the pin shaft 2 is detected, only the dial indicator is required to measure the offset of the pin shaft 2, so that the offset of the hole to be detected on the workpiece to be detected can be easily known.
Specifically, in this embodiment, at least two measuring holes 11 penetrate through the mounting sleeve 1 in the radial direction, wherein one measuring hole 11 extends along the first direction a, and the other measuring hole 11 extends along the second direction b; the dial indicator comprises an indicator body and measuring heads, the indicator body is used for being matched with the mounting shaft sleeve 1, the measuring heads are arranged on the indicator body in a telescopic and movable mode, the measuring heads are used for extending into the measuring holes 11, and in the detection state, the measuring heads are abutted to the first reference surface 21 or the second reference surface 22 of the pin shaft 2 so as to measure the deviation value according to the telescopic amount of the measuring heads. Before detection, the hole site detection device 100 may measure a standard hole of a standard workpiece, and it is known that, under a standard condition, a standard relative distance value of the first reference surface 21 and the second reference surface 22 relative to the mounting sleeve 1, and then, when detecting the workpiece to be detected, a detection relative distance value of the first reference surface 21 and the second reference surface 22 relative to the mounting sleeve 1 may be measured by the same method, and by comparing the two sets of distance values, an offset of the pin shaft 2 may be easily known, so that the offset of the hole to be detected may be easily known.
Specifically, in order to facilitate assembly and processing, please refer to fig. 1, in this embodiment, the mounting shaft sleeve 1 includes a shaft sleeve 12 and a fixing disc 13 sequentially disposed along the axial direction, the shaft sleeve 12 is penetrated with a first through hole along the axial direction, the fixing disc 13 is penetrated with a second through hole along the axial direction, and the first through hole and the second through hole are coaxially disposed to form the mounting channel; the end surface of the fixed disk 13 close to the shaft sleeve 12 is provided with at least two mounting grooves with openings facing the shaft sleeve 12 along the radial direction, each mounting groove forms each measuring hole 11, the hole position detecting device 100 further comprises at least two guide rods 4, each guide rod 4 is inserted into each measuring hole 11 in a one-to-one correspondence manner so as to have a mating end 41 exposed on the outer peripheral side of the fixed disk 13, each guide rod 4 is arranged in a hollow manner so as to be inserted by the measuring head, and the mating end 41 of each guide rod 4 is used for abutting against the meter body. With such an arrangement, the shaft sleeve 12 can be adapted to the adjusting structure 3, and the first through hole can be set to have a hole diameter larger than that of the fixed disk 13, so that the assembling position of each guide rod 4 can be conveniently observed during the assembling process of each guide rod 4, thereby facilitating the adjustment of the guide rod 4. In the measuring process, the dial indicator body abuts against the matching end 41, the matching end 41 serves as a reference for measuring the dial indicator, the measuring head of the dial indicator extends into the guide rod 4 for measuring, and the matching end 41 is fixed relative to the mounting shaft sleeve 1, so that when the pin shaft 2 deviates, the distance between the pin shaft 2 and the matching end 41 changes by the same value.
Further, in order to make the hole site detecting device 100 have higher flexibility and be capable of adaptively detecting workpieces to be detected with various hole diameters, in this embodiment, the detecting end of the pin shaft 2 is further provided with a pin head 5, the pin head 5 is detachably connected with the pin shaft 2, and when workpieces to be detected with different hole diameters need to be detected, the pin head 5 adapted to the hole to be detected of the workpiece to be detected can be correspondingly assembled. One end, far away from the pin shaft 2, of the pin head 5 is at least partially arranged in a conical shape, so that the pin head 5 can play a role in guiding when approaching the workpiece to be detected and inserting the workpiece into the hole to be detected.
Further, because the pin shaft 2 is movably installed in the installation shaft sleeve 1 along the axial direction, in order to prevent the operation process, the pin shaft 2 is pulled out from the installation shaft sleeve 1, in this embodiment, the detection end has a first limiting protrusion 23 annularly arranged on the periphery of the pin shaft 2, and the size of the first limiting protrusion 23 is larger than the sectional size of the installation channel.
Furthermore, also because the pin shaft 2 is movably arranged on the mounting shaft sleeve 1 along the axial direction, in order to ensure that the pin head 5 can be completely sleeved in the station to be detected in the detection state in the operation process, in this embodiment, the pin shaft 2 is further provided with a handle 6 at an end far away from the detection end, the handle 6 extends out from an end of the installation channel to a direction far away from the detection end, the handle 6 is provided with a second limiting bulge 61 which is arranged on the periphery of the handle 6 in a surrounding way, the second limiting bulge 61 is positioned outside the installation channel, and the size of the second limit projection 61 is larger than the sectional size of the installation channel, so that in the detection process, the pin shaft 2 can be pushed, so that the second limiting protrusion 61 is abutted against the workpiece to be detected, and the pin head 5 is ensured to be completely inserted into the hole to be detected.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (7)
1. The utility model provides a hole site detection device for the centering degree of waiting to detect the hole on waiting to detect the work piece, its characterized in that includes:
the mounting shaft sleeve is detachably assembled on the workpiece to be detected, so that the axis of the mounting shaft sleeve is aligned with a datum point on the workpiece to be detected, and a mounting channel penetrates through the middle of the mounting shaft sleeve along the axial direction;
the pin shaft is movably arranged in the mounting channel along the axial direction so as to be provided with a detection end which can be exposed outside the mounting channel and faces the workpiece to be detected, an adjusting structure is arranged between the pin shaft and the inner wall of the mounting channel so as to enable the pin shaft to be movably arranged relative to the mounting shaft sleeve along a plane vertical to the axial direction in an adjustable manner, and the pin shaft is provided with a detection state in which the detection end is inserted in the hole to be detected in the movable stroke; and the number of the first and second groups,
the measuring piece is used for detecting the deviation value of the pin shaft relative to the mounting shaft sleeve in the detection state;
the inner side wall of the mounting shaft sleeve is provided with a first guide groove and a second guide groove along the radial direction of the mounting shaft sleeve;
the adjusting structure comprises a first movable block and a second movable block, the first movable block is movably arranged in the first guide groove along a first direction, the second movable block is movably arranged in the second guide groove along a second direction, and the first direction and the second direction are perpendicular to each other;
the pin shaft is provided with a first reference surface perpendicular to the first direction and a second reference surface perpendicular to the second direction, the first reference surface is abutted with the first movable block, and the second reference surface is abutted with the second movable block, so that the pin shaft is supported between the first movable block and the second movable block in a sliding manner;
the measuring part is a dial indicator;
the mounting shaft sleeve is provided with at least two measuring holes in a penetrating manner along the radial direction, wherein one measuring hole extends along the first direction, and the other measuring hole extends along the second direction;
the dial indicator comprises an indicator body and a measuring head, the indicator body is used for being matched with the mounting shaft sleeve, the measuring head is arranged on the indicator body in a telescopic and movable mode and used for extending into each measuring hole, and the measuring head is abutted to the first reference surface or the second reference surface of the pin shaft in the detection state so as to measure the deviation value according to the telescopic quantity of the measuring head.
2. The hole site detecting device of claim 1, wherein said adjusting structure further comprises a first compression spring and a second compression spring, one end of said first compression spring is connected to the bottom wall of said first guide groove, and the other end is connected to said first movable block;
one end of the second pressure spring is connected to the bottom wall of the second guide groove, and the other end of the second pressure spring is connected to the second movable block.
3. The hole site detecting device of claim 2, wherein there are two of said first movable blocks and two of said second movable blocks, respectively, two of said first movable blocks respectively abutting against both sides of said pin shaft in said first direction, and two of said second movable blocks respectively abutting against both sides of said pin shaft in said second direction;
first pressure springs are arranged between the first movable blocks and the bottom wall of the first guide groove respectively, and second pressure springs are arranged between the second movable blocks and the bottom wall of the second guide groove respectively.
4. The hole site detecting device of claim 1, wherein the mounting sleeve comprises a sleeve and a fixed disk sequentially arranged along the axial direction, the sleeve is provided with a first through hole along the axial direction, the fixed disk is provided with a second through hole along the axial direction, and the first through hole and the second through hole are coaxially arranged to form the mounting channel;
the end surface of the fixed disc, which is close to the shaft sleeve, is provided with at least two mounting grooves with openings facing the shaft sleeve along the radial direction, and each mounting groove forms each measuring hole;
the hole site detection device also comprises at least two guide rods, each guide rod is inserted into each measuring hole in a one-to-one correspondence mode so as to be provided with a matching end exposed on the outer peripheral side of the fixed disk, each guide rod is arranged in a hollow mode and used for the measuring head to extend into, and the matching end of each guide rod is used for the meter body to abut against.
5. Hole site detection device as claimed in claim 1, characterized in that, the detection end of said pin shaft is further provided with a pin head, said pin head is detachably connected with said pin shaft, and the end of said pin head away from said pin shaft is at least partially arranged in a conical shape.
6. Hole site detection device according to claim 5, characterized in that said detection end has a first limit protrusion encircling the periphery of said pin shaft, said first limit protrusion having a dimension larger than the cross-sectional dimension of said mounting channel.
7. Hole site detection device according to claim 6, characterized in that said pin shaft is further provided with a handle at an end remote from said detection end, said handle extends from an end of said installation channel in a direction remote from said detection end, said handle has a second limiting protrusion annularly provided at the periphery of said handle, said second limiting protrusion is located outside said installation channel, and the size of said second limiting protrusion is larger than the cross-sectional size of said installation channel.
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| CN202110492737.XA CN113251887B (en) | 2021-04-29 | 2021-04-29 | Hole site detection device |
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| CN113251887B true CN113251887B (en) | 2022-07-19 |
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| CN114413712A (en) * | 2022-01-18 | 2022-04-29 | 一汽解放汽车有限公司 | Axle housing detection tool |
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