CN210268418U - Detection device for measuring hole position and hole diameter on detection tool - Google Patents
Detection device for measuring hole position and hole diameter on detection tool Download PDFInfo
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- CN210268418U CN210268418U CN201921124474.1U CN201921124474U CN210268418U CN 210268418 U CN210268418 U CN 210268418U CN 201921124474 U CN201921124474 U CN 201921124474U CN 210268418 U CN210268418 U CN 210268418U
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Abstract
The utility model provides a detection device for measuring hole position and aperture on a detection tool, which comprises a main ruler with scales, wherein a vertical downward cylindrical pin is arranged at the central line of the main ruler, the cylindrical pin is inserted into a bottom hole of the detection tool after passing through a hole to be detected, the cylindrical pin is in interference fit with the bottom hole of the detection tool, cursors which can move left and right on the main ruler are respectively arranged at two sides of the cylindrical pin on the main ruler, the bottom of a clamping pin of the cursors is a clamping pin contact part contacted with the inner wall of the hole to be detected, and the outer surface of the clamping pin contact part, namely the surface of the clamping pin contact part contacted with the inner wall of the hole to be detected, is a cambered surface subjected to quenching treatment; the length of the cylindrical pin is greater than that of the clamping pin of the vernier, and the distance between the lower end surface of the cylindrical pin and the lower end surface of the contact part of the clamping pin is smaller than the distance between the hole to be detected and the bottom surface of the bottom hole of the detection tool; the device can avoid human errors in the detection process to the maximum extent, and provides more accurate data for calculating the position and the aperture of the hole to be detected.
Description
Technical Field
The utility model belongs to automobile punching part detects the instrument field, relates to a detection device in measuring hole position degree and aperture on examining the utensil.
Background
At the present stage, the detection mode of the hole in the automobile stamping part is mostly detected by using the detection tool. At present, automobile host manufacturers can manufacture special checking tools for stamping parts of the automobile host manufacturers to detect various sizes of the stamping parts, the structure of the checking tools for detecting various sizes of the stamping parts is conventional and generally the same, the sizes and the shapes of the stamping parts detected according to needs are different, and the sizes and the shapes of some parts of the checking tools are slightly different. The conventional gauge is used at present and the working principle is as follows: the checking fixture is provided with a supporting surface, a bottom hole, a positioning pin, a clamping device and the like, the supporting surface, the bottom hole and the positioning hole are processed in a numerical control mode according to the theoretical shape of a part, the precision reaches 0.01mm, a to-be-detected part is placed on the supporting surface of the checking fixture, the positioning pin penetrates through the positioning hole in the to-be-detected part and the corresponding positioning hole in the checking fixture, and the to-be-detected part is clamped by the clamping device. The circle center of the bottom hole on the checking tool is consistent with the theoretical circle center of the hole to be detected on the piece to be detected, a marking pin arranged on the checking tool is inserted into the bottom hole of the checking tool during measurement, a circle of line is marked on the surface of the piece to be detected, and then a vernier caliper is used for calculating the position degree of the piece to be detected by measuring the distance between the hole to be detected and the marked line.
The current method for detecting the position degree of a hole to be detected comprises the following steps: and fixing the to-be-detected piece on the detection tool as shown in figure 1. A marking pin with a proper size (the diameter of the marking pin is larger than that of a hole to be detected) is selected from marking pins of the detecting tool and inserted into a bottom hole of the detecting tool, a marking needle of the marking pin contacts the surface of the piece to be detected and winds around a circle, and the drawn circle is the same as the theoretical circle center of the hole to be detected, as shown in figure 2. The operator virtualizes a straight line passing through the theoretical center of the hole to be detected in the brain of the operator, and the straight line intersects the hole to be detected and the drawn circle respectively to obtain points A, B, C, D, as shown in fig. 3. As shown in fig. 3, the length of AC (shown by the solid line caliper) and the length of BD (shown by the dashed line caliper) are measured by using a vernier caliper, and the difference is divided by 2, which is considered as the deviation of the hole center along the direction of the construction line.
The current method for detecting the aperture of a hole to be detected comprises the following steps: the length of BC in fig. 3, i.e. the diameter of the hole considered to be detected, is measured using a vernier caliper, as shown in fig. 4. Because the virtual straight line is the theoretical circle center of the detected hole, which is judged by the operator subjectively, the distance between the B, C points does not necessarily represent the diameter of the hole to be detected, and the finally measured result error of the aperture of the hole to be detected is larger. Taking the point a as an example, since the operator selects a range when confirming the position of the point a on the plane, the position of the point a is greatly influenced by subjective judgment of the operator, and the deviation of the input data is large when calculating the position degree of the hole to be detected finally. The final result is also greatly influenced by the posture and strength of the operator when holding the vernier caliper.
Disclosure of Invention
The utility model discloses an overcome the above-mentioned problem that prior art exists, provide a detection device in measuring hole position degree and aperture on examining the utensil. The operation of selecting the detection point of the hole to be detected by an operator is changed from the current mode of subjective judgment, visual inspection and experience selection into the mode of fixing the position and measuring and selecting by the device, so that the error in the detection process is avoided to the maximum extent, and more accurate data input is provided for calculating the position degree and the aperture of the hole to be detected.
In order to solve the technical problem, the utility model discloses an adopt following technical scheme to realize:
the utility model provides a detection apparatus in measuring hole site degree and aperture on examining utensil, use with the cooperation of examining utensil of the conventional of host computer factory for detecting the stamping workpiece use, it has the holding surface to examine on the utensil, the bottom outlet, the locating hole, locating pin and binding clasp, it places on the holding surface of examining the utensil to wait to detect the piece, the locating pin passes to wait to detect the locating hole of piece and examine the last corresponding locating hole of utensil and use the binding clasp to press from both sides and wait to detect the piece, the centre of a circle of the bottom outlet on examining the utensil is unanimous with the theoretical centre of a circle of waiting to detect:
the device comprises a main scale with scales, wherein a vertically downward cylindrical pin is arranged at the central line of the main scale, the axis of the cylindrical pin is superposed with the central line of the main scale, the cylindrical pin penetrates through a hole to be detected of a piece to be detected and then is inserted into a bottom hole of a detection tool, the cylindrical pin is in interference fit with the bottom hole of the detection tool, cursors which can move left and right on the main scale and can read the scales on the main scale are respectively arranged on the two sides of the cylindrical pin on the main scale, the bottom of a clamping foot of each vernier is a clamping foot contact part which is in contact with the inner wall of the hole to be detected, and the outer surface of the clamping foot contact part, namely the surface of the clamping foot contact part in contact with the inner wall of the hole to be detected, is the distance from the axis of the cylindrical pin to the contact part of the corresponding vernier, which is represented by any scale on the quenched.
The length of cylindric lock is greater than the length of the card foot of vernier, and the distance between the lower terminal surface of cylindric lock and the lower terminal surface of card foot contact site is less than the distance between the bottom surface of waiting to detect hole and bottom hole.
Compared with the prior art, the beneficial effects of the utility model are that:
as the cylindrical pin in the device can be matched with the bottom hole of the checking fixture, the selected measuring point can be ensured to be on the same theoretical diameter of the hole to be detected. The contact part of the clamping pin of the device does not move on the surface of the piece to be detected but moves in the range of the hole to be detected, so the maximum offset is clear and accurate. Because the device does not need to mark when in measurement, the detection time can be saved, and the purchase cost of the marking pin can be saved.
Drawings
The invention will be further described with reference to the accompanying drawings:
FIG. 1 is a schematic view of a to-be-detected part placed on a detection tool;
FIG. 2 is a schematic view of a prior art use of a scribe pin to scribe around a hole to be inspected;
FIG. 3 is a schematic diagram of a detection process and a detection principle for detecting the location degree of a hole to be detected by using a vernier caliper in the prior art;
FIG. 4 is a schematic diagram of a detection process and a detection principle of detecting the aperture of a hole to be detected by using a vernier caliper in the prior art;
fig. 5 is a schematic structural view of a detection device for measuring hole location and hole diameter on a detection tool provided by the present invention;
FIG. 6 is a schematic view of a device for measuring hole location and hole diameter on a gauge according to the present invention during operation; in the figure: 1. the measuring tool comprises a main ruler, 2 parts of a cylindrical pin, 3 parts of a vernier, 4 parts of a clamping pin, 5 parts of a clamping pin contact part, 6 parts of a to-be-detected piece, 7 parts of a to-be-detected hole, 8 parts of a detecting tool, 9 parts of a bottom hole, 10 parts of a marking pin, 11 parts of a line marked by the marking pin and 12 parts of a vernier caliper.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings:
the utility model provides a detection apparatus for measuring hole site degree and aperture on examining utensil, use with the conventional 8 cooperations of examining of automobile host factory for detecting the stamping workpiece use, it has the holding surface on 8 to examine, bottom outlet 9, the locating hole, the locating pin, marking pin 10 and binding clasp etc., as shown in FIG. 1, it places on the holding surface of examining the utensil to wait to detect a 6, the locating pin passes the locating hole that waits to detect a 6 and examines the locating hole that corresponds on 8 and use the binding clasp to press from both sides tightly to wait to detect a 6, the centre of a circle of the bottom outlet 9 on examining utensil 8 is unanimous with the theoretical centre of a circle of waiting to detect a hole 7 of.
As shown in figure 5, the device comprises a main scale 1 with scales, a vertically downward cylindrical pin 2 is arranged at the central line of the main scale 1, the axis of the cylindrical pin 2 is coincident with the central line of the main scale 1, the cylindrical pin 2 is inserted into a bottom hole 9 of a checking tool 8 after passing through a hole 7 to be checked of an element 6 to be checked, the cylindrical pin 2 is in interference fit with a bottom hole 9 of the checking fixture 8, a vernier 3 which can move left and right on the main scale 1 and can read the scale of the position on the main scale 1 is respectively arranged on the two sides of the cylindrical pin 2 on the main scale 1, the bottom of a clamping pin 4 of the vernier 3 is a clamping pin contact part 5 which is in contact with the inner wall of the hole 7 to be detected, and the outer surface of the clamping pin contact part 5, namely the surface of the clamping pin contact part 5 which is in contact with the inner wall of the hole 7 to be detected, is the distance from the contact part 5 of the clamping pin 4 of the corresponding vernier 3 to the axis of the cylindrical pin 2, which is represented by any scale on the quenched cambered surface main scale 1.
The length of the cylindrical pin 2 is greater than that of the clamping foot 4 of the vernier 3, and the distance between the lower end face of the cylindrical pin 2 and the lower end face of the clamping foot contact part 5 is smaller than the distance between the hole to be detected and the bottom surface of the bottom hole 9.
The utility model provides a pair of detection device in measuring hole position degree and aperture on examining utensil's working process as follows:
1. the cylindrical pin 2 is inserted into a bottom hole 9 of a checking fixture 8 (the bottom hole 9 is processed during the manufacturing of the checking fixture 8, the circle center of the bottom hole is the theoretical circle center of the corresponding hole, which is a well-known conventional technology in the field), and the height of the device is adjusted, so that the clamping pin contact part 5 on the clamping pin 4 penetrates through a hole 7 to be detected.
2. The left and right two clamping feet 4 are moved away from the cylindrical pin 2 until the clamping feet contact with the edge of the inner wall of the hole 7 to be detected, as shown in fig. 6.
3. The readings X1 and X2 corresponding to the left and right clamping feet 4 on the main ruler 1 are recorded.
4. Calculating the position degree of the hole 7 to be detected: the result (band. + -. sign) of (X2-X1)/2 is the deviation amount of the center of the hole 7 to be detected in the X1 direction.
6. Rotating the device about the pin 2, a catch 4 remains in contact with the edge of the inner wall of the hole 7 to be inspected until the point of maximum distance is found, at which point the main scale 1 shows the value Y1. Keeping the clamp foot 4 still, the other clamp foot 4 moves to a position far away from the cylindrical pin 2 until the edge of the inner wall of the hole 7 to be detected is contacted, and the main ruler 1 displays a value Y2.
7. Calculating the aperture of the hole to be detected 7: the result of Y1+ Y2 is the aperture of the hole to be detected.
The device can guarantee that the symmetry axis (the axis of the cylindrical pin 2) is always positioned at the theoretical circle center of the detected hole 7 during detection, and the position of a measuring point can meet the measuring requirement to the maximum extent. The operator does not need to subjectively judge the selected position of the measuring point.
Claims (1)
1. The utility model provides a detection apparatus in measuring hole position degree and aperture on examining utensil, use with the cooperation of utensil (8) is examined to the conventionality of examining of host computer factory for detecting the stamping workpiece use, it has the holding surface on utensil (8), bottom outlet (9), the locating hole, locating pin and binding clasp, it places on the holding surface of examining utensil (8) to detect a (6), the locating pin passes the locating hole that detects a (6) and examines the locating hole that corresponds on utensil (8) and uses the binding clasp to press from both sides and detect a (6), the centre of a circle of bottom outlet (9) on examining utensil (8) is unanimous with the theoretical centre of a circle of waiting to detect hole (7) of detecting a (6), its characterized in that:
the device comprises a main scale (1) with scales, wherein a vertically downward cylindrical pin (2) is arranged at the center line of the main scale (1), the axis of the cylindrical pin (2) coincides with the center line of the main scale (1), the cylindrical pin (2) penetrates through a hole (7) to be detected of a piece (6) to be detected and then is inserted into a bottom hole (9) of a detection tool (8), the cylindrical pin (2) is in interference fit with the bottom hole (9) of the detection tool (8), a vernier (3) which can move left and right on the main scale (1) and can read the scales on the main scale (1) at the position is arranged on the main scale (1) on two sides of the cylindrical pin (2) on the main scale (1), the bottom of a clamping foot (4) of the vernier (3) is a clamping foot contact part (5) which is in contact with the inner wall of the hole (7) to be detected, and the outer surface of the clamping foot contact part (5), namely the surface of the clamping foot contact part (5), which is in contact with the inner wall of the hole (7) to be detected, is any scale on the cambered The distance between the contact part (5) of the clamping pin (4) of the corresponding vernier (3) and the axle center of the cylindrical pin (2),
the length of the cylindrical pin (2) is greater than that of the clamping pin (4) of the vernier (3), and the distance between the lower end face of the cylindrical pin (2) and the lower end face of the clamping pin contact part (5) is smaller than the distance between the hole (7) to be detected and the bottom surface of the bottom hole (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921124474.1U CN210268418U (en) | 2019-07-18 | 2019-07-18 | Detection device for measuring hole position and hole diameter on detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921124474.1U CN210268418U (en) | 2019-07-18 | 2019-07-18 | Detection device for measuring hole position and hole diameter on detection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210268418U true CN210268418U (en) | 2020-04-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921124474.1U Active CN210268418U (en) | 2019-07-18 | 2019-07-18 | Detection device for measuring hole position and hole diameter on detection tool |
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| Country | Link |
|---|---|
| CN (1) | CN210268418U (en) |
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- 2019-07-18 CN CN201921124474.1U patent/CN210268418U/en active Active
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