CN216523535U - Auxiliary detection device for screw head width of screw - Google Patents
Auxiliary detection device for screw head width of screw Download PDFInfo
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- CN216523535U CN216523535U CN202122266295.5U CN202122266295U CN216523535U CN 216523535 U CN216523535 U CN 216523535U CN 202122266295 U CN202122266295 U CN 202122266295U CN 216523535 U CN216523535 U CN 216523535U
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Abstract
The utility model is suitable for the technical field of screw head width detection, and provides an auxiliary screw head width detection device of a screw, wherein the screw head and a screw rod of the screw are integrally formed, and the auxiliary screw head width detection device comprises: the bottom of the detection frame is provided with a detection bottom frame, the detection bottom frame is provided with a first through groove matched with the screw rod along the vertical direction, and the top surface of the detection bottom frame is used for bearing the screw head; the two ejector rods are respectively arranged at the left part and the right part of the detection frame along the horizontal direction and are symmetrically arranged; the two ejector rods are respectively arranged corresponding to the to-be-detected points of the screw head, and the top point of the head of each ejector rod faces the to-be-detected points of the screw head; the top point of the head of the ejector rod and the point to be detected are on the same horizontal line; the tail part of the mandril extends out of the detection frame. Therefore, the utility model realizes the rapid measurement of the width of the corresponding position of the screw head.
Description
Technical Field
The utility model relates to the technical field of screw head width detection, in particular to an auxiliary screw head width detection device for a screw.
Background
For the screw applied to the start-stop switch control of the starter motor (see fig. 1), in order to achieve the normal switch function of the starter motor, the width dimension of the corresponding position of the screw head is important, and it is required that the screw head satisfies the width W within the range of 10.55 ± 0.08mm at the height position where H is 7.6 mm.
In actual production, the width measurement of the screw head at the corresponding height is measured by using a projector, and the measurement process is very difficult. The difficulty is that the screw head is provided with an arc groove with the radius of R25 specification, so that the screw head cannot be directly projected by using a projector, and before projection, the screw head needs to be cut along the center position of the head part of the arc groove with the R25 specification, and then auxiliary measurement is carried out by the projector. However, during the cutting process, it is extremely difficult to control the cutting in the center of the head.
If the actual product is found not to meet the requirements, the equipment needs to be debugged again and the device needs to be cut again for verification, so that the actual production and inspection efficiency is extremely slow and the cost is high.
In summary, the conventional structure has disadvantages and drawbacks in practical use, so that improvement is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks, the present invention provides an auxiliary screw head width detection device for a screw, which can quickly measure the width of the screw head at a corresponding position.
In order to achieve the above object, the present invention provides an auxiliary screw head width detection device for a screw, the screw head of which is integrally formed with a screw shaft, comprising:
the bottom of the detection frame is provided with a detection chassis, the detection chassis is provided with a first through groove matched with the screw rod along the vertical direction, and the top surface of the detection chassis is used for bearing the screw head;
the two ejector rods are respectively arranged at the left part and the right part of the detection frame along the horizontal direction and are symmetrically arranged;
the two ejector rods are respectively arranged corresponding to the points to be detected of the screw head, and the top point of the head of each ejector rod faces the points to be detected of the screw head; the top point of the head of the ejector rod and the point to be detected are positioned on the same horizontal line;
the tail part of the ejector rod extends out of the detection frame.
According to the auxiliary detection tool for the width of the screw head of the screw, the head of the ejector rod is in a conical shape, and the vertex of the head of the ejector rod is a sharp point.
The middle part of the ejector rod is in a cylindrical shape according to the screw head width auxiliary detection device of the screw; the tail part of the ejector rod is cylindrical; the diameter of the middle part of the ejector rod is larger than that of the tail part of the ejector rod;
a spring is sleeved on the outer side of the tail of the ejector rod, the head end of the spring is connected with the middle part of the ejector rod, and the tail end of the spring is connected with a spring baffle;
the tail part of the ejector rod extends out of the spring baffle.
According to the auxiliary detection device for the width of the screw head of the screw, the detection frame is matched with the ejector rod and provided with a second through groove, and the ejector rod is arranged in the second through groove.
According to the auxiliary detection device for the width of the screw head of the screw, the detection frame is matched with the ejector rod and is provided with a guide rail along the horizontal direction, a sliding block is arranged on the guide rail, and the sliding block is connected with the ejector rod.
According to the auxiliary detection tool for the width of the screw head of the screw, a support is further arranged on the bottom side of the detection frame, and the support is fixed on the detection frame through a support screw.
And the screw head width of the screw is used for assisting the detection tool, and the screw is a socket head cap screw.
The embodiment of the utility model provides an auxiliary screw head width detection device, which comprises a detection frame, wherein the bottom of the detection frame is provided with a detection chassis, the detection chassis is provided with a first through groove matched with a screw rod along the vertical direction, and the top surface of the detection chassis is used for bearing the screw head; the two ejector rods are respectively arranged at the left part and the right part of the detection frame along the horizontal direction and are symmetrically arranged; the two ejector rods are respectively arranged corresponding to the points to be detected of the screw head, and the top point of the head of each ejector rod faces the points to be detected of the screw head; the top point of the head of the ejector rod and the point to be detected are positioned on the same horizontal line; the tail part of the ejector rod extends out of the detection frame. The point to be detected refers to a position on the screw head where the width needs to be detected, for example, a position on the height position of the screw head of 7.6 mm. When measuring, put into the first logical groove of detection frame with the screw rod of screw, fixed the screw rod, then promote two ejector pins simultaneously for the summit of the head of ejector pin contacts with waiting to detect the point, at this moment, the total length of the tail end of supposing through length measurement instrument (slide caliper) measurement ejector pin to the tail end of another ejector pin is X1, supposing that the length of every ejector pin is X2, the total length of two ejector pins is 2X2, and the width of screw head is X1-2X 2. The measuring process is simple. Therefore, the utility model realizes the rapid measurement of the width of the corresponding position of the screw head.
Drawings
FIG. 1 is a schematic view of a screw provided in the prior art;
FIG. 2 is a schematic view of a screw head width auxiliary detection device according to an embodiment of the present invention;
FIG. 3 is a left side cross-sectional view of a screw head width auxiliary detection instrument provided by an embodiment of the present invention;
FIG. 4 is a top view of a screw head width auxiliary detection tool provided by an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a push rod according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 2 to 5, in a first embodiment of the present invention, there is provided a screw head width auxiliary detection instrument 100 for a screw, in which a screw head 210 of a screw 200 is integrally formed with a screw shaft 220, including:
the bottom of the detection frame 10 is provided with a detection chassis 11, the detection chassis 11 is provided with a first through groove 111 matched with the screw rod 220 along the vertical direction, and the top surface of the detection chassis 11 is used for bearing the screw head 210;
two ejector rods 20 respectively arranged at the left part and the right part of the detection frame 10 along the horizontal direction, wherein the two ejector rods 20 are symmetrically arranged;
the two ejector rods 20 are respectively arranged corresponding to the points to be detected of the screw head 210, and the top point of the head part of each ejector rod 20 faces the points to be detected of the screw head 210; the top point of the head part of the mandril 20 and the point to be detected are positioned on the same horizontal line;
the rear part of the jack 20 extends from the inspection frame 10.
In this embodiment, the screw 200, i.e., a screw, is a tool that sequentially tightens a machine part using the physics and mathematical principles of the object's beveled circular rotation and friction. The size requirements of the screw 200 may vary when the screw 200 is used in different applications. For example, when the screw 200 is applied to start-stop switch control of a starter motor, in order to achieve a normal switch function of the starter motor, it is required that the screw head 210 at a height position of 7.6mm thereof satisfies a width within a range of 10.55 ± 0.08 mm. When the detection chassis 11 of the detection frame 10 is used for fixing the screw 200, and when the width of the screw head 210 is measured, the screw rod 220 is inserted into the first through groove 111, at this time, the bottom surface of the screw head 210 is attached to the top surface of the detection chassis 11, and the top point of the head portion of the ejector rod 20 faces the point to be detected of the screw head 210 (the point to be detected is two points of the screw head 210 requiring width measurement, for example, points at two ends of the screw head 210 at a height of 7.6mm, and the top point of the head portion of the ejector rod 20 is on the same horizontal line with the point to be detected), and when the measurement is performed, the tail portions of two ejector rods 20 extending from the detection frame 10 are horizontally pushed at the same time until the top point of the head portion of the ejector rod 20 is in contact with the point to be detected, at this time, the detection of the width of the screw head 210 can be performed by using the length measuring tool 300, assuming that the total length from the tail end of one ejector rod 20 to the tail end of another ejector rod 20 is measured by the length measuring tool 300 (calipers) is X1, assuming that the length of each ejector rod 20 is X2 and the total length of the two ejector rods 20 is 2X2, the width of the screw head 210 is X1-2X 2. The measuring process is simple. Optionally, screw 200 is a socket head cap screw 200.
As an alternative embodiment, referring to fig. 5, the head of the stem 20 has a conical shape, and the apex of the head of the stem 20 is a sharp point.
In this embodiment, the smaller the surface area of the vertex of the ejector rod 20, the smaller the contact area between the vertex and the screw head 210, and the vertex is prevented from contacting other points of the screw head 210 except the point to be detected, thereby improving the measurement accuracy.
As an alternative embodiment, referring to fig. 5, the middle portion of the stem 20 is cylindrical; the tail part of the mandril 20 is cylindrical; the diameter of the middle part of the mandril 20 is larger than that of the tail part of the mandril 20;
the outer side of the tail part of the ejector rod 20 is sleeved with a spring 30, the head end of the spring 30 is connected with the middle part of the ejector rod 20, and the tail end of the spring 30 is connected with a spring baffle 40;
the rear portion of the ram 20 extends from a spring retainer 40.
In this embodiment, through the cooperation of spring 30 and spring baffle 40, can drive ejector pin 20 automatic re-setting, reduce manual operation, promote experience.
As an alternative embodiment, the detecting frame 10 is adapted to the top bar 20 and is provided with a second through slot, and the top bar 20 is arranged in the second through slot.
In this embodiment, the second through groove has the functions of limiting and guiding the moving track of the top rod 20, so as to prevent the top rod 20 from shifting during ejection.
As an alternative embodiment, the detecting frame 10 is adapted to the top bar 20 and is provided with a guide rail along the horizontal direction, and the guide rail is provided with a slide block which is connected with the top bar 20.
In this embodiment, the guide rail can guide the movement track of the push rod 20, and prevent the push rod 20 from deviating during ejection.
As an alternative embodiment, referring to fig. 3, the bottom side of the inspection frame 10 is further provided with a bracket 50, and the bracket 50 is fixed on the inspection frame 10 by a bracket screw 60.
In this embodiment, the stand 50 may support the inspection frame 10 to a height that facilitates inspection. And the bracket 50 makes the bottom of the detection frame 10 hang in the air, a rotating part can be installed at the bottom side of the detection frame 10, the rotating part can drive the screw 200 to rotate, the direction of the screw 200 is convenient to rotate, the points to be detected in different directions of the screw 200 face to the ejector rod 20, and the width detection is rapidly performed.
In summary, an embodiment of the present invention provides an auxiliary screw head width detection apparatus, including a detection frame, a detection chassis disposed at a bottom of the detection frame, the detection chassis being provided with a first through groove adapted to the screw rod along a vertical direction, and a top surface of the detection chassis being configured to bear the screw head; the two ejector rods are respectively arranged at the left part and the right part of the detection frame along the horizontal direction and are symmetrically arranged; the two ejector rods are respectively arranged corresponding to the points to be detected of the screw head, and the top point of the head of each ejector rod faces the points to be detected of the screw head; the top point of the head of the ejector rod and the point to be detected are positioned on the same horizontal line; the tail part of the ejector rod extends out of the detection frame. The point to be detected refers to a position on the screw head where the width needs to be detected, for example, a position on the height position of the screw head of 7.6 mm. When measuring, put into the first logical groove of detection frame with the screw rod of screw, fixed the screw rod, then promote two ejector pins simultaneously for the summit of the head of ejector pin contacts with waiting to detect the point, at this moment, the total length of the tail end of supposing through length measurement instrument (slide caliper) measurement ejector pin to the tail end of another ejector pin is X1, supposing that the length of every ejector pin is X2, the total length of two ejector pins is 2X2, and the width of screw head is X1-2X 2. The measuring process is simple. Therefore, the utility model realizes the rapid measurement of the width of the corresponding position of the screw head.
The present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof, and it should be understood that various changes and modifications can be effected therein by one skilled in the art without departing from the spirit and scope of the utility model as defined in the appended claims.
Claims (7)
1. A screw head width auxiliary detection device of a screw, the screw head of which is integrally formed with a screw shaft, the screw head width auxiliary detection device is characterized by comprising:
the bottom of the detection frame is provided with a detection chassis, the detection chassis is provided with a first through groove matched with the screw rod along the vertical direction, and the top surface of the detection chassis is used for bearing the screw head;
the two ejector rods are respectively arranged at the left part and the right part of the detection frame along the horizontal direction and are symmetrically arranged;
the two ejector rods are respectively arranged corresponding to the points to be detected of the screw head, and the top point of the head of each ejector rod faces the points to be detected of the screw head; the top point of the head of the ejector rod and the point to be detected are positioned on the same horizontal line;
the tail part of the ejector rod extends out of the detection frame.
2. The screw head width auxiliary detection tool of a screw according to claim 1, wherein the head portion of the ejector rod is conical, and the apex of the head portion of the ejector rod is a sharp point.
3. The screw head width auxiliary detection tool of the screw according to claim 1, wherein the middle part of the ejector rod is cylindrical; the tail part of the ejector rod is cylindrical; the diameter of the middle part of the ejector rod is larger than that of the tail part of the ejector rod;
a spring is sleeved on the outer side of the tail of the ejector rod, the head end of the spring is connected with the middle part of the ejector rod, and the tail end of the spring is connected with a spring baffle;
the tail part of the ejector rod extends out of the spring baffle.
4. The screw head width auxiliary detection apparatus of claim 1, wherein the detection frame is adapted to the ejector rod and has a second through groove, and the ejector rod is disposed in the second through groove.
5. The screw head width auxiliary detection device of the screw according to claim 1, wherein the detection frame is adapted to the ejector rod and provided with a guide rail along the horizontal direction, and a slide block is arranged on the guide rail and connected with the ejector rod.
6. The screw head width auxiliary detection tool of the screw according to claim 1, wherein a bracket is further provided on the bottom side of the detection frame, and the bracket is fixed to the detection frame by a bracket screw.
7. The screw head width auxiliary detection tool of claim 1, wherein the screw is a socket head cap screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122266295.5U CN216523535U (en) | 2021-09-16 | 2021-09-16 | Auxiliary detection device for screw head width of screw |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122266295.5U CN216523535U (en) | 2021-09-16 | 2021-09-16 | Auxiliary detection device for screw head width of screw |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216523535U true CN216523535U (en) | 2022-05-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122266295.5U Active CN216523535U (en) | 2021-09-16 | 2021-09-16 | Auxiliary detection device for screw head width of screw |
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| Country | Link |
|---|---|
| CN (1) | CN216523535U (en) |
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2021
- 2021-09-16 CN CN202122266295.5U patent/CN216523535U/en active Active
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