CN215810773U - Watchcase earhole hole depth detection tool - Google Patents
Watchcase earhole hole depth detection tool Download PDFInfo
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- CN215810773U CN215810773U CN202122159292.1U CN202122159292U CN215810773U CN 215810773 U CN215810773 U CN 215810773U CN 202122159292 U CN202122159292 U CN 202122159292U CN 215810773 U CN215810773 U CN 215810773U
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- 238000001514 detection method Methods 0.000 title abstract description 17
- 238000009434 installation Methods 0.000 claims abstract description 5
- 239000000523 sample Substances 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 description 4
- 238000007689 inspection Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Abstract
The utility model provides a watchcase ear hole depth detection jig, which solves the technical problems of inconvenience in detection and insufficient precision of the existing watchcase ear hole. The base is of a square or similar square structure and is vertically placed on a horizontal plane, the lower surface of the base is a reference surface, and at least one boss is arranged on the side surface of the base. The boss is of a profiling structure, the side end face is a working surface and is attached to the surface of the watchcase to be measured. The boss is installed on the base in a rotating mode at a certain angle and is provided with a positioning or limiting structure. The utility model has shorter size chain and simple structure, and can measure the ear hole more accurately; the boss with the installation angle design is combined, so that the measuring position of the detection probe is more convenient to calibrate and place, the workload of manual adjustment is reduced, and the device can be widely applied to the technical field of watchcase processing.
Description
Technical Field
The utility model relates to the technical field of detection jigs, in particular to a watchcase ear hole depth detection jig.
Background
In the watchcase course of working, need carry out necessary position and size detection to dark ear hole, this because these dark ear holes often are the installation position of important part, in case machining error is great, the piece seam department of final finished product is comparatively obvious, not only influences the wrist-watch pleasing to the eye, still makes spare part become flexible easily, drops. Therefore, a certain detection jig is required to inspect the position and the geometric size of the inspection jig.
Common watchcase detection tool structurally makes the platform of placing that adopts imitative mould structure, fixes the watchcase, again by manual operation detection probe inspection. Although the jig is simple in structure, when the inclined deep earhole is detected, the probe needs to be adjusted to a position inconvenient to calibrate, the final detection precision is affected, and great troubles are brought to operators.
Chinese patent CN102278929B discloses a watch ear hole measuring instrument, which comprises an altimeter for measuring the size data of a watch case ear hole, wherein: a reference positioning component is arranged below the height gauge and is matched with the lug hole of the watch shell in a clamping way: a horizontal reference surface is arranged on the reference positioning component; the axis of the case lug hole is positioned in the horizontal reference plane. The horizontal plane where the axis of the ear hole of the watch is located is used as a reference plane, the horizontal reference plane is used for correcting the initial zero value of the altimeter, and then the altimeter is used for accurately measuring the size data from the positions of the ear ridge, the thin body surface, the bottom plane, the ear foot or the ear tip and the like to the horizontal reference plane, so that the accurate size data from the center of the ear hole to the position to be measured is obtained. The technical scheme obtains required data in a size chain mode by setting a plurality of datum planes. Although the problem of placing the measuring probe is solved by moving the case, the dimension chain accumulates errors, and the structure is complex.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical defects and provides a gauge for detecting the depth of an ear hole of a watch case.
Therefore, the utility model provides a jig which comprises a base and a boss;
the base is of a square or similar square structure and is vertically placed on a horizontal plane, the lower surface of the base is a reference surface, and the side surface of the base is an installation surface; at least one boss is arranged on the side surface of the base;
the boss is of a profiling structure, and the side end face is a working surface; the side end surface is attached to the surface of the watchcase to be measured; the boss is also provided with a positioning or limiting structure; an avoidance distance is arranged between the outer edge of the boss and the inner edge of the watch case;
the cross-sectional profile of the boss is an axisymmetric figure, and the included angle between the symmetric axis and the horizontal plane is less than 90 degrees.
Preferably, the number of the bosses is two, and the bosses are symmetrically arranged on the side surface of the base.
Preferably, the boss is provided with a positioning structure comprising at least one positioning pin; the positioning pins correspond to the positioning holes in the watch case one by one.
Preferably, the positioning pin is a taper pin, and the taper range is 3:400-1: 100.
Preferably, the base and the boss are of an integrally formed structure.
The utility model provides a watchcase ear hole depth detection jig which has the following beneficial effects:
the base is set as a reference surface, so that other positioning parts are reduced, more accurate measurement is realized, the overall structure is simple, the detection probe measurement position is more convenient to calibrate and place by combining the lug boss with the mounting angle design, and the workload of manual adjustment is reduced; furthermore, the positioning structure designed by combining the taper can effectively prevent the tolerance fluctuation of the positioning hole from influencing the placement of the watchcase.
Drawings
FIG. 1 is a front view of the present invention;
FIG. 2 is a top view of the present invention;
FIG. 3 is a perspective view of the present invention;
FIG. 4 is a reference diagram illustrating the use state of the present invention;
the labels in the figure are: 1. the device comprises a base, a boss 2, a positioning pin 3, a detection probe 4 and a shell 5.
Detailed Description
The utility model is further described below in conjunction with the drawings and the specific embodiments to assist in understanding the contents of the utility model. The method used in the utility model is a conventional method if no special provisions are made; the raw materials and the apparatus used are, unless otherwise specified, conventional commercially available products.
Referring to fig. 1-3, a gauge for detecting the depth of a hole of a shell ear mainly comprises a base 1 and a boss 2.
Wherein, base 1 is similar cubic structure, for the stability of lower part, has increased the chimb structure in both sides of lower part, makes it can be stable place on the horizontal plane. All dimensions are measured through the lower surface of the base 1 as a reference surface. The front side of the base 1 is a mounting surface, and the two bosses 2 are symmetrically arranged on the surface of the base, so that two groups can be clamped and detected at one time, and the measurement efficiency can be increased.
The boss 2 is of a profiling structure, and the side end face is a working surface; in this embodiment, the case 5 is illustrated as having a flat inner surface and a flat side end surface, and when the case 5 is placed, the side end surface of the boss 2 is bonded to the surface of the case 5 to be measured.
The boss 2 is also provided with a positioning or limiting structure; preferably, in the present embodiment, the case 5 is processed with a positioning precision hole, so the positioning structure of the boss 2 and the case 5 is 2 positioning pins 3, and each positioning pin 3 corresponds to one positioning hole on the case 5. Furthermore, in the work, because tolerance fluctuation exists in the positioning hole of the meter shell, the size of the jig is fixed, and the requirement on detection precision is high, the situation that the positioning pin 3 cannot penetrate through the positioning hole can occur due to slight deviation, and the clamping of the meter shell 5 fails, the positioning pin is designed to be a taper pin, the preferable taper is 1:100, namely the exposed length of the positioning pin 3 is 3mm, and the diameter of the top is 3mm, and the diameter of the bottom is 3.03 mm.
In order to prevent the occurrence of the three-damage, it is necessary to design a position-avoiding design for the burr at the edge of the inner surface of the watch case 5, so that under the condition of the limitation of the aforementioned positioning structure, as shown in fig. 4, the transverse dimension of the boss 2 is designed to be smaller than the dimension of the inner edge of the watch case 5, that is, an avoiding distance is set between the outer edge of the boss and the inner edge of the watch case 5, which is designed to be 0.5mm in this embodiment.
The cross-sectional profile of boss 2 is the axisymmetric figure, and in this embodiment, boss 2 is processed into the rectangle, sets up it along the certain angle of installation position rotation, and the symmetry axis is less than 90 with the horizontal plane contained angle promptly, can place the earhole like this, especially the dark earhole of slant design along the vertical direction, and avoid upper portion to shelter from, as shown in fig. 4, makes things convenient for detection probe 4 to detect in vertical insertion earhole. In this embodiment, the rotation angle is designed to be 13 °, that is, an angle α between the symmetry axis of the boss 3 and the vertical line of the horizontal plane is 13 °.
Preferably, considering the split design, the assembly of the base 1 and the boss 2 brings measurement errors, so the base 1 and the boss 2 are designed into an integrated structure, and a high-precision machining center is adopted to machine the blank in one step.
In the description of the present invention, it is to be understood that the terms "left", "right", "upper", "lower", "top", "bottom", "front", "rear", "inner", "outer", "back", "middle", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
However, the above description is only exemplary of the present invention, and the scope of the present invention should not be limited thereby, and the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.
Claims (5)
1. A gauge for detecting the depth of an ear hole of a watch case is characterized by comprising a base and a boss;
the base is of a square or similar square structure and is vertically placed on a horizontal plane; the lower surface of the base is a reference surface, and the side surface of the base is an installation surface; at least one boss is arranged on the side surface of the base;
the boss is of a profiling structure, and the side end face is a working surface; the side end surface is attached to the surface of the watchcase to be measured; the boss is also provided with a positioning or limiting structure; an avoidance distance is arranged between the outer edge of the boss and the inner edge of the watch case;
the cross-sectional profile of the boss is an axisymmetric figure, and the included angle between the symmetric axis and the horizontal plane is less than 90 degrees.
2. The jig for detecting the depth of the ear hole of the watch case as claimed in claim 1, wherein there are two of said bosses symmetrically disposed on the side of said base.
3. The tool for detecting the hole depth of the ear hole of the watch case as claimed in claim 1, wherein the boss is provided with a positioning structure comprising at least one positioning pin; the positioning pins correspond to the positioning holes in the watch case one by one.
4. The tool for detecting the hole depth of the ear hole of the watch case as claimed in claim 3, wherein the positioning pin is a taper pin, and the taper range is 3:400-1: 100.
5. The tool of claim 1, wherein the base and the boss are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122159292.1U CN215810773U (en) | 2021-09-08 | 2021-09-08 | Watchcase earhole hole depth detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122159292.1U CN215810773U (en) | 2021-09-08 | 2021-09-08 | Watchcase earhole hole depth detection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215810773U true CN215810773U (en) | 2022-02-11 |
Family
ID=80157359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122159292.1U Active CN215810773U (en) | 2021-09-08 | 2021-09-08 | Watchcase earhole hole depth detection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215810773U (en) |
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2021
- 2021-09-08 CN CN202122159292.1U patent/CN215810773U/en active Active
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