CN215725635U - Key included angle checking fixture for chuck of electric tool - Google Patents
Key included angle checking fixture for chuck of electric tool Download PDFInfo
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- CN215725635U CN215725635U CN202121328369.7U CN202121328369U CN215725635U CN 215725635 U CN215725635 U CN 215725635U CN 202121328369 U CN202121328369 U CN 202121328369U CN 215725635 U CN215725635 U CN 215725635U
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Abstract
The utility model provides a key included angle checking fixture for an electric tool chuck, and relates to the technical field of checking fixtures. A key angle gauge for a power tool chuck, comprising: the base comprises a mounting part and a measuring part which are arranged vertically, wherein the mounting part is provided with a first through hole, and the measuring part is provided with a second through hole; the positioning rod is inserted into the first through hole, and a key groove matched with a key of the electric tool chuck is formed in the positioning rod; the measuring rod penetrates through the second through hole and can slide along the second through hole; wherein, the central line of the key groove projected on the installation part along the vertical direction and the central line of the measuring rod projected on the installation part along the vertical direction form an included angle of 85-90 degrees. The included angle between the projection of the key groove 210 and the projection of the measuring rod 300 can be conveniently and rapidly measured on the premise of not damaging a sample, and whether the included angle between the internal spline 410 and the side hole 420 on the chuck of the tested electric workpiece meets the technical requirements or not can be conveniently and rapidly measured.
Description
Technical Field
The utility model belongs to the technical field of checking tools, and particularly relates to a key included angle checking tool of an electric tool chuck.
Background
The included angle between the internal spline and the side hole of the electric tool chuck needs to be detected in the production process of the electric tool chuck, the existing detection scheme is to split a detected sample from the middle, and a measurement projector is utilized to detect whether the included angle between the internal spline and the side hole of the electric tool chuck meets the technical requirements, so the measurement has two main problems, firstly, one sample needs to be damaged every time the measurement is carried out, and the cost is high; secondly, the measurement projector is used for measuring the accuracy, but the measurement speed is slow, and the measurement is time-consuming and labor-consuming.
Disclosure of Invention
The utility model aims to solve the problems in the prior art, and provides a key included angle detection tool of an electric tool chuck, which can be used for rapidly detecting whether an included angle between an internal spline and a side hole meets the technical requirements.
The purpose of the utility model can be realized by the following technical scheme: the utility model provides an utensil is examined to key contained angle of electric tool chuck for detect the contained angle between internal spline and the side opening, include:
the base comprises a mounting part and a measuring part which are arranged vertically, wherein a first through hole is formed in the mounting part, and a second through hole is formed in the measuring part;
the positioning rod is inserted into the first through hole, and a key groove matched with a key of the electric tool chuck is formed in the positioning rod;
the measuring rod is connected in the second through hole in a sliding mode;
the included angle theta formed by an axial symmetry line L1 of the key groove projected on the mounting part along the vertical direction and a central line L2 of the measuring rod projected on the mounting part along the vertical direction is between 85 degrees and 90 degrees.
As a further improvement of the present invention, the angle θ is set to 87 °.
As a further improvement of the present invention, the bottom surface of the key groove is formed in a circular arc shape.
As a further improvement of the utility model, the cross section of the key groove is in a horn shape with the wide outside and the narrow inside.
As a further improvement of the present invention, the key groove penetrates the entire positioning rod in the axial direction of the positioning rod.
As a further improvement of the present invention, the number of the key slots is two, and the two key slots are symmetrically arranged on both sides of the positioning rod.
As a further improvement of the utility model, the measuring rod comprises a measuring head and a rod body which are concentrically arranged, the diameter of the measuring head is smaller than that of the rod body, and the measuring head is fixedly connected with the rod body.
As a further improvement of the present invention, the mounting portion and the measuring portion are integrally formed.
Based on the technical scheme, the embodiment of the utility model can at least produce the following technical effects:
1. the included angle between the projection of the key groove and the projection of the measuring rod can be limited, so that whether the included angle between the internal spline on the chuck of the tested electric workpiece and the side hole meets the technical requirements or not can be conveniently and rapidly measured on the premise of not damaging a sample;
2. the key groove penetrates through the whole positioning rod along the axis direction of the positioning rod, so that the connection between the fixing rod and the mounting part can also be connected by using a key, and the connection is more reliable;
3. the two key grooves are symmetrically arranged on the two sides of the positioning rod, so that the positioning rod is matched with the tested electric workpiece chuck on one hand, and on the other hand, the positioning rod is stressed more uniformly, and the tested electric workpiece chuck is more stable during detection;
4. the diameters of a measuring head and a rod body in the measuring rod are set to be different, the size of the measuring head is matched with the size of a side hole of a chuck of the tested electric workpiece, the diameter of the rod body is increased, and the relative measurement error can be reduced under the condition of certain processing error;
5. through setting up installation department and measuring part to integrated into one piece for the processing of base is simpler.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of the base of the present invention.
Fig. 3 is a schematic structural view of the fixing rod of the present invention.
Fig. 4 is a cross-sectional view of the power tool chuck.
In the figure, 100, the base; 110. an installation part; 111. a first through hole; 120. a measuring section; 121. a second through hole; 200. positioning a rod; 210. a keyway; 300. a measuring rod; 310. a measuring head; 320. a shaft body; 400. an electric tool chuck; 410. an internal spline; 420. side holes.
Detailed Description
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. Moreover, descriptions of the present invention as relating to "first," "second," "a," etc. are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating a number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise. In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. In addition, the technical solutions in the embodiments of the present invention may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination of technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The following is a specific embodiment of the present invention, and the technical solution of the present invention is further described with reference to fig. 1 to 4, but the present invention is not limited to this embodiment.
A key angle gauge of a power tool chuck 400, comprising: the measuring device comprises a base 100, a positioning rod 200 and a measuring rod 300, wherein the base 100 comprises a mounting part 110 and a measuring part 120 which are perpendicular to each other, a first through hole 111 is formed in the mounting part 110, and a second through hole 121 is formed in the measuring part 120; the positioning rod 200 is inserted into the first through hole 111, and a key groove 210 matched with an internal spline 410 on the electric tool chuck 400 is arranged on the positioning rod 200; the measuring rod 300 is arranged in the second through hole 121 in a penetrating manner and can slide along the second through hole 121; wherein, the symmetry axis L1 projected on the mounting part 110 along the vertical direction of the key groove 210 forms an included angle theta between 85 degrees and 90 degrees with the central line L2 projected on the mounting part 110 along the vertical direction of the measuring rod 300, and the included angle theta is 87 degrees in the embodiment. The included angle between the projection of the key groove 210 and the projection of the measuring rod 300 can be conveniently and rapidly measured on the premise of not damaging a sample, and whether the included angle between the internal spline 410 and the side hole 420 on the chuck of the tested electric workpiece meets the technical requirements or not can be conveniently and rapidly measured.
Specifically, the side of the base 100 is L-shaped, the mounting portion 110 and the measuring portion 120 are integrally formed, and the whole base 100 is made of metal. By providing the mounting portion 110 and the measuring portion 120 as an integral molding, the processing of the base 100 is made simpler.
Further, the bottom surface of the key groove 210 is formed in a circular arc shape. The cross section of the key groove 210 is formed in a trumpet shape having an outer wide and an inner narrow. On the one hand, the spline is adapted to the internal spline 410 of the measured electric tool chuck, and on the other hand, the measured part can be more easily installed on the positioning rod 200.
Further, the key groove 210 penetrates the entire positioning rod in the axial direction of the positioning rod, and the shape of any cross section of the entire positioning rod is the same, and the shape of the first through hole 111 is the same as the above cross section. Through setting up keyway 210 and running through whole locating lever along locating lever axis direction for locating lever 200 also can use the key-type connection with being connected of installation department 110, makes to connect more reliably.
Alternatively, the cross-sectional shape of the fitting portion of the positioning rod and the mounting portion 110 may be different from that of the upper portion, and may be a rectangle, an octagon, a triangle, or the like, and the shape of the first through hole 111 is the same as that of the fitting portion.
Further, the number of the key slots 210 is two, and the two key slots 210 are symmetrically arranged on two sides of the positioning rod. Through setting up keyway 210 into two, and the bilateral symmetry at the locating lever sets up, is for to be surveyed the electric work piece chuck and match on the one hand, and on the other hand for the locating lever atress is more even, and it is more firm to be surveyed the electric work piece chuck in the time of the detection.
Further, the measuring stick 300 includes a measuring head 310 and a stick body 320 concentrically arranged, the measuring head 310 and the stick body 320 are both cylindrical, the diameter of the measuring head 310 is smaller than that of the stick body 320, and the measuring head 310 is fixedly connected with the stick body 320. By setting the diameters of the measuring head 310 and the shaft 320 in the measuring rod 300 to be different, the size of the measuring head 310 is adapted to the size of the chuck side hole 420 of the tested electric workpiece, and the diameter of the shaft 320 is increased, the relative measurement error can be reduced under the condition of certain processing error.
The utility model discloses a use method of an electric key included angle gauge, which comprises the following steps: inserting the positioning rod 200 into the first through hole 111, inserting the tested electric tool chuck 400 into the positioning rod 200 for fixation, inserting the measuring rod 300 into the second through hole 121, pushing the measuring rod 300 to move along the axis of the second through hole 121, observing whether the measuring head 310 can be inserted into the second through hole 121, if so, the tested electric tool chuck 400 meets the technical requirements, otherwise, the tested electric tool chuck 400 is not qualified.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Claims (8)
1. The utility model provides an utensil is examined to key contained angle of electric tool chuck for detect the contained angle between internal spline and the side opening, its characterized in that includes:
the base comprises a mounting part and a measuring part which are arranged vertically, wherein a first through hole is formed in the mounting part, and a second through hole is formed in the measuring part;
the positioning rod is inserted into the first through hole, and a key groove matched with a key of the electric tool chuck is formed in the positioning rod;
the measuring rod is connected in the second through hole in a sliding mode;
the included angle theta formed by an axial symmetry line L1 of the key groove projected on the mounting part along the vertical direction and a central line L2 of the measuring rod projected on the mounting part along the vertical direction is between 85 degrees and 90 degrees.
2. The tool according to claim 1, wherein the included angle θ is 87 °.
3. The tool according to claim 1, wherein the bottom surface of the key slot is rounded.
4. The tool according to claim 1, wherein the cross section of the key groove is in a horn shape with a wide outer part and a narrow inner part.
5. The tool according to claim 1, wherein the keyway extends through the entire positioning rod along the axis of the positioning rod.
6. The tool according to claim 5, wherein the number of the key slots is two, and the two key slots are symmetrically arranged on two sides of the positioning rod.
7. The tool according to claim 1, wherein the measuring rod comprises a measuring head and a rod body which are concentrically arranged, the diameter of the measuring head is smaller than that of the rod body, and the measuring head is fixedly connected with the rod body.
8. The tool according to claim 1, wherein the mounting portion and the measuring portion are integrally formed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121328369.7U CN215725635U (en) | 2021-06-15 | 2021-06-15 | Key included angle checking fixture for chuck of electric tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121328369.7U CN215725635U (en) | 2021-06-15 | 2021-06-15 | Key included angle checking fixture for chuck of electric tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215725635U true CN215725635U (en) | 2022-02-01 |
Family
ID=80042738
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121328369.7U Active CN215725635U (en) | 2021-06-15 | 2021-06-15 | Key included angle checking fixture for chuck of electric tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215725635U (en) |
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2021
- 2021-06-15 CN CN202121328369.7U patent/CN215725635U/en active Active
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