CN210625558U

CN210625558U - Tool for detecting coaxiality between workpiece central hole and bevel gear

Info

Publication number: CN210625558U
Application number: CN201921997194.1U
Authority: CN
Inventors: 张凤玲; 冯丽娥; 罗军伟; 周超洪; 邵向兰
Original assignee: Meishan CRRC Brake Science and Technology Co Ltd
Current assignee: Meishan CRRC Brake Science and Technology Co Ltd
Priority date: 2019-11-19
Filing date: 2019-11-19
Publication date: 2020-05-26
Anticipated expiration: 2029-11-19

Abstract

The utility model discloses a frock for detecting axiality between work piece centre bore and the awl tooth belongs to and detects frock technical field, but it is main including relative pivoted rotation portion and fixed part, and can follow vertical removal's ejector pin for rotation portion, wherein, the work piece is held to ejector pin and rotation portion, and the restriction work piece is for rotation portion at its ascending removal of axial, and the cooperation is equipped with the second awl tooth with the first awl tooth matched with of work piece in the rotation portion, restrict the horizontal relative rotation between rotation portion and the work piece promptly, and make whole work piece can rotate around rotation portion axis. The coaxiality error between the workpiece center hole and the bevel gear can be converted into a conveniently measured circular run-out error of the outer circumferential surface, so that an implementer can conveniently and efficiently measure the coaxiality between the workpiece center hole and the bevel gear.

Description

Tool for detecting coaxiality between workpiece central hole and bevel gear

Technical Field

The utility model relates to a detect frock technical field, particularly, especially relate to a frock for detecting axiality between work piece centre bore and the awl tooth.

Background

In the field of railway vehicle technology, the parts of the brake adjuster guide nut and the like comprise a central hole arranged along the axis of the part and conical teeth coaxial with the central hole. In the middle of the course of working, need detect the axiality of center hole and awl tooth to avoid the waste product to flow into in the next process, thereby promote production efficiency. For the workpiece, a special measuring tool does not exist, and the measuring operation is inconvenient to implement. Therefore, how to efficiently measure the coaxiality between the central hole of the workpiece and the bevel gear becomes a technical problem to be solved urgently.

Disclosure of Invention

To sum up, the utility model discloses the technical problem who solves is: the tool for detecting the coaxiality between the workpiece center hole and the bevel teeth can enable an implementer to conveniently and efficiently determine whether the coaxiality between the workpiece center hole and the bevel teeth is in a qualified range.

And the utility model discloses a solve the scheme that above-mentioned technical problem adopted and be:

the utility model provides a frock for detecting axiality between work piece centre bore and the awl tooth, the work piece is including following the centre bore that its axis was arranged to and with the coaxial first awl tooth of centre bore, the outward appearance of work piece including with the outer periphery of centre bore coaxial line, including fixed part and rotation portion, the bottom of rotation portion is connected on the fixed part, and it can rotate around self vertical axis for the fixed part, rotation portion constitutes the second cone tooth with first cone tooth looks adaptation at its top, second cone tooth and rotation portion coaxial line still include the ejector pin that its bottom inserted in rotation portion, ejector pin and rotation portion coaxial line, the ejector pin can slide from top to bottom along the vertical for rotation portion, the periphery of ejector pin and the interior week looks adaptation of centre bore, the top of ejector pin is connected with the flange rather than the coaxial line, when the ejector pin penetrates in the centre bore of work piece, the first bevel gear and the second bevel gear can be meshed together through the axial movement of the workpiece relative to the rotating part along the ejector rod, so that the first bevel gear and the second bevel gear are coaxial and limit the horizontal relative rotation between the first bevel gear and the second bevel gear, and the flange and the second bevel gear clamp the workpiece, so that the vertical movement of the workpiece relative to the rotating part is limited.

Furthermore, a bearing is arranged between the rotating part and the fixing part, and the rotating part is rotatably connected with the fixing part through the bearing.

Further, the number of the first conical teeth and the second conical teeth is 60.

Further, the first bevel gear is an inner bevel gear, and the second bevel gear is an outer bevel gear.

Furthermore, a shaft shoulder for abutting against the top of the bearing is formed on the periphery of the rotating part, an abutting part for abutting against the bottom of the bearing is formed on the fixing part, and the shaft shoulder and the abutting part limit the downward movement of the rotating part relative to the fixing part.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that: the utility model discloses with the detection of axiality between work piece centre bore and the awl tooth, convert the circle of being to the outer periphery of work piece into and beat the detection to whether make implementer can be in within the qualified scope comparatively convenient, the axiality between efficient survey work piece centre bore and its awl tooth.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings referred to in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings may be obtained from these drawings without inventive effort.

Fig. 1 is a schematic structural diagram of embodiment 1 provided by the present invention;

fig. 2 is a schematic top view of embodiment 1 provided by the present invention;

fig. 3 is a schematic structural diagram of embodiment 2 provided by the present invention.

[ Specification of symbols ]

1-workpiece, 2-fixed part, 3-rotating part, 4-second conical tooth, 5-ejector rod, 6-flange, 7-bearing, 8-shaft shoulder and 9-stopping part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention. Furthermore, the appearances of the terms "first," "second," and the like in the description of the present invention are only used for distinguishing between the descriptions and are not intended to indicate or imply relative importance.

Furthermore, the terms "horizontal", "vertical" and the like when used in the description of the present invention do not require that the components be absolutely horizontal or hanging, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1

As shown in fig. 1 and fig. 2, the tool for detecting the coaxiality between the central hole and the bevel gear of the workpiece 1 provided in this embodiment 1 includes a central hole arranged along the axis of the workpiece 1 and a first bevel gear coaxial with the central hole, the outer surface of the workpiece 1 includes an outer circumferential surface coaxial with the central hole, the tool includes a fixed portion 2 and a rotating portion 3, the bottom of the rotating portion 3 is connected to the fixed portion 2 and can rotate around the vertical axis of the rotating portion with respect to the fixed portion 2, the rotating portion 3 forms a second bevel gear 4 adapted to the first bevel gear at the top thereof, the second bevel gear 4 and the rotating portion 3 are coaxial, and further includes a push rod 5 whose bottom end is inserted into the rotating portion 3, the push rod 5 is coaxial with the rotating portion 3, the push rod 5 can vertically slide up and down with respect to the rotating portion 3, the outer periphery of the push rod 5 is adapted to the inner circumference of the central hole, the top end of the ejector rod 5 is connected with a flange 6 coaxial with the ejector rod 5, when the ejector rod 5 penetrates into a central hole of the workpiece 1, the first bevel gear and the second bevel gear 4 can be meshed together through the axial movement of the workpiece 1 relative to the rotating part 3 along the ejector rod 5, so that the first bevel gear and the second bevel gear are coaxial and limit the horizontal relative rotation between the first bevel gear and the second bevel gear, and the flange 6 and the second bevel gear 4 clamp the workpiece 1, so that the vertical movement of the workpiece 1 relative to the rotating part 3 is limited.

Because the first bevel gear and the second bevel gear 4 have the same bevel gear parameters such as tooth tops, modulus, indexing cone angles and the like and are respectively the inner bevel gear and the outer bevel gear, after the first bevel gear and the second bevel gear are meshed with each other, the first bevel gear and the second bevel gear 4 are relatively fixed in the circumferential direction and coaxial with each other. The periphery of the ejector rod 5 is matched with the inner periphery of the central hole, namely the concrete points are as follows: when the ejector rod 5 penetrates into the central hole of the workpiece 1, a radial distance is reserved between the outer periphery of the ejector rod 5 and the inner periphery of the central hole. Therefore, after the first bevel gear and the second bevel gear 4 are engaged, an operator only needs to horizontally rotate the rotating part 3 with the workpiece 1 and measure the circular runout of the outer circumferential surface of the workpiece 1 coaxial with the central hole by using a dial indicator, so that the coaxiality error between the first bevel gear and the central hole of the workpiece 1 can be obtained.

In the preferred embodiment, in the present embodiment 1, a bearing 7 is provided between the rotating part 3 and the fixed part 2, and the rotating part 3 is rotatably connected to the fixed part 2 through the bearing 7. Wherein, the bearing 7 can effectively ensure the stability of the relative horizontal rotation between the rotating part 3 and the fixing part 2. More specifically, in the present embodiment 1, the number of the first conical teeth and the second conical teeth 4 is 60.

Wherein, the flange 6 that the ejector pin 5 top is connected mainly is used for forming the centre gripping position with second taper tooth 4, when the portion of rotating 3 carries out the horizontal rotation for fixed part 2, should exert downward pressure to flange 6 to first taper tooth and second taper tooth 4 can mesh together closely, avoids both to take place relative movement in the vertical.

Meanwhile, in order to ensure that the fixing portion 2 can support the entire rotating portion 3 in the vertical direction, in the preferred embodiment, in the embodiment 1, a shoulder 8 for abutting against the top of the bearing 7 is formed on the outer periphery of the rotating portion 3, the fixing portion 2 is formed with a stopping portion 9 for abutting against the bottom of the bearing 7, and the shoulder 8 and the stopping portion 9 limit the downward movement of the rotating portion 3 relative to the fixing portion 2. Wherein, the pressure that flange 6 received passes through shaft shoulder 8, bearing 7 and department 9 that withstands in proper order and is transmitted for fixed part 2 by rotating part 3, effectively ensures the stability of first awl tooth and second awl tooth 4 when the meshing. More specifically, in the present embodiment 1, the first bevel teeth are inner bevel teeth, and the second bevel teeth 4 are outer bevel teeth.

Example 2

In a specific application process, except for the workpiece 1 with the inner bevel teeth, part of the workpiece 1 is mainly formed with the outer bevel teeth, so as shown in fig. 3, the present invention provides an embodiment 2. The main difference between the embodiment 2 and the embodiment 1 lies in the difference of the inside and outside relationship of the first bevel gear and the second bevel gear 4, in the embodiment 2, the first bevel gear is an outer bevel gear, and the second bevel gear 4 is an inner bevel gear.

Claims

1. The utility model provides a frock for detecting axiality between work piece centre bore and the awl tooth, the work piece is including the centre bore of arranging along its axis to and the first awl tooth coaxial with the centre bore, the outward appearance of work piece is including the outer periphery with centre bore coaxial line, its characterized in that: the tool comprises a fixed part and a rotating part, wherein the bottom of the rotating part is connected to the fixed part and can rotate around a vertical axis of the rotating part relative to the fixed part, the top of the rotating part is provided with a second bevel gear matched with the first bevel gear, the second bevel gear and the rotating part are coaxial, the tool further comprises a mandril the bottom end of which is inserted into the rotating part, the mandril is coaxial with the rotating part, the mandril can vertically slide up and down relative to the rotating part, the periphery of the mandril is matched with the inner periphery of a central hole, the top end of the mandril is connected with a flange coaxial with the mandril, when the mandril penetrates into the central hole of the workpiece, the first bevel gear and the second bevel gear can move along the axial direction of the mandril relative to the rotating part and are meshed together, so that the first bevel gear and the second bevel gear are coaxial and limit the horizontal relative rotation between the first bevel gear and the, thereby limiting the vertical movement of the workpiece relative to the rotating portion.

2. The tool for detecting the coaxiality between the central hole of the workpiece and the bevel teeth as claimed in claim 1, wherein: and a bearing is arranged between the rotating part and the fixed part, and the rotating part is rotatably connected with the fixed part through the bearing.

3. The tool for detecting the coaxiality between the central hole of the workpiece and the bevel teeth as claimed in claim 1, wherein: the number of the first conical teeth and the number of the second conical teeth are both 60.

4. The tool for detecting the coaxiality between the central hole of the workpiece and the bevel teeth as claimed in claim 1, wherein: the first bevel teeth are inner bevel teeth and the second bevel teeth are outer bevel teeth.

5. The tool for detecting the coaxiality between the central hole of the workpiece and the bevel teeth as claimed in claim 2, wherein: the periphery of the rotating part is provided with a shaft shoulder which is abutted against the top of the bearing, the fixing part is provided with an abutting part which is abutted against the bottom of the bearing, and the shaft shoulder and the abutting part limit the downward movement of the rotating part relative to the fixing part.