阅读说明：本技术 一种曲柄花键位置度快速检测装置、系统及方法 (Device, system and method for quickly detecting crank key position ) 是由 毛建建 王涛远 尚丹鸽 张黎光 于 2021-10-27 设计创作，主要内容包括：本发明公开了一种曲柄花键位置度快速检测装置、系统及方法。曲柄花键位置度快速检测装置包括定位板和检测销,定位板上沿预设方向贯穿设置内花键孔,定位板上还设置有检测销孔,检测销的一端部插接固定于检测销孔,其余部分经定位板在预设方向上的一个端面伸出。通过在定位板和检测销的配合结构对具有定位曲柄销孔的曲柄的花键位置度进行检测,检测销和内花键孔的位置关系与合格的曲柄中定位曲柄销孔和渐开线花键的位置关系一致,在检测过程中,只需在曲柄的渐开线花键插入定位板的内花键孔后,判断检测销是否能够插入曲柄的定位曲柄销孔,即可判断曲柄上花键圆周方向的位置度是否合格,操作简单,可提高检测效率,降低工人的劳动强度。(The invention discloses a device, a system and a method for quickly detecting the position of a crank key. The quick detection device of crank spline position degree includes locating plate and detection round pin, runs through along the direction of predetermineeing on the locating plate and sets up the internal spline hole, still is provided with the detection pinhole on the locating plate, and a tip grafting of detecting the round pin is fixed in the detection pinhole, and other parts stretch out through a terminal surface of locating plate in the direction of predetermineeing. Through the locating plate with detect the cooperation structure of round pin and detect the articulate spline position degree that has location crank pinhole and detect, the position relation that detects round pin and internally splined hole is unanimous with the qualified crank in location crank pinhole and the position relation of involute spline, in the testing process, only need insert the internally splined hole of locating plate at articulate involute spline after, judge whether detect the round pin can insert articulate location crank pinhole, can judge whether qualified the position degree of spline circumferencial direction on the crank, and the operation is simple, can improve detection efficiency, and the labor intensity of workers is reduced.)

1. The utility model provides a quick detection device of crank key position degree, its characterized in that, includes locating plate (1) and detection round pin (2), set up internal spline hole (12) along predetermineeing the direction and running through on locating plate (1), still be provided with on locating plate (1) and detect pinhole (11), a tip that detects round pin (2) is pegged graft and is fixed in detect pinhole (11), all the other parts warp locating plate (1) is in predetermine an ascending terminal surface of direction and stretch out.

2. The crank spline position degree rapid detection device according to claim 1, wherein the detection pin hole (11) is arranged on the positioning plate (1) in a penetrating manner along the preset direction.

3. The crank spline position rapid detection device according to claim 1, wherein the detection pin (2) is inserted into the detection pin hole (11) and is in interference fit with the detection pin hole.

4. The crank spline position degree rapid detection device according to any one of claims 1 to 3, wherein the detection pin (2) is a stepped shaft formed by butting a large diameter part (21) and a small diameter part (22) with a radial size smaller than that of the large diameter part (21) along the preset direction, the small diameter part (22) is plugged in the detection pin hole (11), and a stepped surface (23) between the large diameter part (21) and the small diameter part (22) abuts against one end surface of the positioning plate (1) in the preset direction.

5. The crank spline position degree rapid detection device according to claim 4, wherein the large diameter portion (21) and the small diameter portion (22) are coaxial cylinders.

6. A crank spline position degree rapid detection system is characterized by comprising a crank (3) and a crank spline position degree rapid detection device according to any one of claims 1 to 5;

the crank (3) comprises an end plate (31) and a rod part (32) fixed at one end of the end plate (31) in the preset direction, an involute spline (321) is arranged on the outer peripheral surface of the rod part (32), and a positioning crank pin hole (311) is arranged on the end plate (31) in a penetrating mode in the preset direction;

the inner spline hole (12) is used for being in plug-in fit with the involute spline (321), and the part of the detection pin (2) extending out of the positioning plate (1) is used for being in plug-in fit with the positioning crank pin hole (311).

7. A crank spline position degree rapid detection method is characterized in that the crank spline position degree rapid detection device of any one of claims 1 to 5 is applied;

the method comprises the following steps:

inserting a rod part (32) of the crank (3) into the inner spline hole (12) along the preset direction until the inner spline hole (12) is in insertion fit with the involute spline (321) on the rod part (32);

and relatively moving the crank (3) and the positioning plate (1) along the preset direction, and judging whether the part of the detection pin (2) extending out of the positioning plate (1) can be inserted into a positioning crank pin hole (311) of the crank (3), wherein if yes, the position degree of the spline of the crank (3) is qualified, otherwise, the position degree of the spline of the crank (3) is unqualified.

Technical Field

The invention relates to the technical field of crank detection, in particular to a device, a system and a method for quickly detecting the crank key position.

Background

Cranks are a vital component in motorcycle engines. During installation, the crank has strict requirements on the angle of the spline, and if the angle of the spline is out of tolerance, the timing time of the timing chain is influenced, so that the compression ratio is influenced, and the acting of the engine is influenced.

In the prior art, when the crank detects the position degree of the spline, the position degree of the spline on the crank is determined by the aid of a positioning crank pin hole in the crank and a three-coordinate measuring instrument through operations such as line drawing of a professional, the operation process is complex, quick self-detection in the machining process of workers is not easy to achieve, the detection efficiency is low, and the crank is not suitable for full detection.

Therefore, how to improve the detection efficiency is a technical problem that needs to be solved by those skilled in the art.

Disclosure of Invention

In view of this, the present invention provides a device, a system and a method for rapidly detecting the crank key position, which have high detection efficiency.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a quick detection device of crank key position degree, includes locating plate and detection round pin, it sets up the internal spline hole to run through along predetermineeing the direction on the locating plate, still be provided with the detection pinhole on the locating plate, a tip of detecting the round pin is pegged graft and is fixed in detect the pinhole, all the other parts warp the locating plate is in predetermine an ascending terminal surface of direction and stretch out.

Preferably, the detection pin hole penetrates through the positioning plate along the preset direction.

Preferably, the detection pin is inserted into the detection pin hole and is in interference fit with the detection pin hole.

Preferably, the detection pin is a stepped shaft formed by butt joint of a large diameter portion and a small diameter portion with a radial size smaller than that of the large diameter portion along the preset direction, the small diameter portion is inserted into the detection pin hole, and a stepped surface between the large diameter portion and the small diameter portion abuts against one end face of the positioning plate in the preset direction.

Preferably, the large diameter portion and the small diameter portion are coaxial cylinders.

A crank spline position degree rapid detection system comprises a crank and a crank spline position degree rapid detection device;

the crank comprises an end plate and a rod part fixed at one end of the end plate in the preset direction, an involute spline is arranged on the outer circumferential surface of the rod part, and a positioning crank pin hole penetrates through the end plate along the preset direction;

the inner spline hole is used for being in plug-in fit with the involute spline, and the part of the detection pin extending out of the positioning plate is used for being in plug-in fit with the positioning crank pin hole.

A crank spline position degree rapid detection method is applied to the crank spline position degree rapid detection device;

the method comprises the following steps:

inserting a rod part of the crank into the inner spline hole along the preset direction until the inner spline hole is in inserted fit with the involute spline on the rod part;

and relatively moving the crank and the positioning plate along the preset direction, and judging whether the part of the detection pin extending out of the positioning plate can be inserted into a positioning crank pin hole of the crank, wherein if so, the crank spline position degree is qualified, and otherwise, the crank spline position degree is unqualified.

The invention provides a quick detection device for the crank spline position degree, which comprises a positioning plate and a detection pin, wherein an internal spline hole is arranged on the positioning plate in a penetrating mode along a preset direction, a detection pin hole is also arranged on the positioning plate, one end part of the detection pin is fixedly inserted into the detection pin hole, and the rest part of the detection pin extends out of one end face of the positioning plate in the preset direction.

Through the locating plate with detect the cooperation structure of round pin and detect the articulate spline position degree that has location crank pinhole and detect, moreover, the steam generator is simple in structure, and is convenient for process, and simultaneously, the position relation that detects round pin and internal spline hole among the detection device is unanimous with the qualified crank in location crank pinhole and the position relation of involute spline, in the testing process, only need insert the internal spline hole of locating plate at articulate involute spline after, judge and detect whether the round pin can insert articulate location crank pinhole, can judge whether qualified the position degree of spline circumferencial direction on the crank, moreover, the steam generator is simple in operation, can greatly improve detection efficiency, realize the short-term test, reduce workman's intensity of labour, and is suitable for examining entirely.

The system and the method for quickly detecting the crank spline position degree have high detection efficiency.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a front view of a crankshaft detected by the device for rapidly detecting the position of a crank spline provided by the present invention;

FIG. 2 is a side view of a crankshaft detected by the device for rapidly detecting the crank spline position according to the present invention;

FIG. 3 is a front view of the device for rapidly detecting the position of the crank spline provided by the present invention;

FIG. 4 is a side view of the device for rapidly detecting the crank spline position provided by the present invention;

fig. 5 is an assembly view of the crank spline position degree rapid detection device and the crankshaft detected by the same provided by the invention.

Reference numerals:

the positioning plate 1, the detection pin hole 11 and the internal spline hole 12;

a detection pin 2, a large diameter portion 21, a small diameter portion 22, and a stepped surface 23;

crank 3, end plate 31, location crank pinhole 311, pole portion 32, involute spline 321.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a device, a system and a method for quickly detecting the position of the crank key, which have higher detection efficiency.

Referring to fig. 1 to 5, a first embodiment of a device for rapidly detecting a crank spline location degree provided by the present invention includes a positioning plate 1 and a detecting pin 2.

The locating plate 1 is provided with an internal spline hole 12 in a penetrating mode along the preset direction, the locating plate 1 is further provided with a detection pin hole 11, one end portion of the detection pin 2 is fixedly connected with the detection pin hole 11 in an inserting mode, and the rest portion of the detection pin extends out of one end face of the locating plate 1 in the preset direction.

The device is applied to detecting the spline position degree of a crank 3, wherein the crank 3 is a motorcycle engine crank. Specifically, the crank 3 includes an end plate 31 and a rod portion 32 fixed to one end of the end plate 31 in a predetermined direction, an involute spline 321 is provided on an outer peripheral surface of the rod portion 32, and a positioning crank pin hole 311 is further provided on the end plate 31 in a penetrating manner in the predetermined direction.

During detection, the rod part 32 of the crank 3 is inserted into the inner spline hole 12 until the inner spline hole 12 is inserted into the involute spline 321 on the rod part 32; the crank 3 and the positioning plate 1 are relatively moved along the preset direction, whether the part of the detection pin 2 extending out of the positioning plate 1 can be inserted into the positioning crank pin hole 311 of the crank 3 or not is judged, if yes, the crank spline position degree is qualified, and otherwise, the crank spline position degree is unqualified. Specifically, after the part of the detection pin 2 extending out of the positioning plate 1 is inserted into the positioning crank pin hole 311 of the crank 3, the detection pin 2 is fit with the hole wall of the positioning crank pin hole 311, or has a certain gap.

In this embodiment, the articulate spline position degree that has location crank pinhole 311 is detected through the cooperation structure at locating plate 1 and detection round pin 2, moreover, the steam generator is simple in structure, and is convenient for process, and simultaneously, the positional relationship that detects round pin 2 and internal spline hole 12 among the detection device is unanimous with the positional relationship of location crank pinhole 311 and involute spline 321 among the qualified crank 3, in the testing process, only need insert locating plate 1's internal spline hole 12 at crank 3's involute spline 321 after, judge and detect round pin 2 and can insert crank 3's location crank pinhole 311, can judge whether qualified the positional relationship of spline circumferencial direction is gone up on crank 3, moreover, the steam generator is simple in operation, can improve detection efficiency greatly, realize the short-term test, reduce workman's intensity of labour, and is suitable for full inspection.

Further, the detection pin hole 11 penetrates through the positioning plate 1 along a preset direction, so as to facilitate processing, and of course, in other embodiments, the detection pin hole 11 may also be a blind hole.

Further, the detection pin 2 is inserted into the detection pin hole 11 and is in interference fit, so that the detection pin 2 can be prevented from being separated from the detection pin hole 11 in the detection process. Of course, in other embodiments, the inspection pin 2 may be screwed into the inspection pin hole 11.

Further, the detection pin 2 is a stepped shaft formed by butting the large diameter portion 21 and the small diameter portion 22 having a radial size smaller than that of the large diameter portion 21 along a preset direction, the small diameter portion 22 is inserted into the detection pin hole 11, and a stepped surface 23 between the large diameter portion 21 and the small diameter portion 22 abuts against one end surface of the positioning plate 1 in the preset direction. The stepped surface 23 of the detection pin 2 abuts against the positioning plate 1, so that the detection pin 2 can be further prevented from being separated from the detection pin hole 11 in the detection process. Of course, in other embodiments, the detection pin 2 may also be a cylindrical structure.

Further, the large-diameter portion 21 and the small-diameter portion 22 are coaxial cylinders, which facilitates processing. Of course, in other embodiments, the small diameter portion 22 may be provided in other shapes according to the shape adaptability of the positioning crank pin hole 311.

In addition to the above device for quickly detecting the position degree of the crank spline, the invention also provides a system for quickly detecting the position degree of the crank spline, which comprises the device for quickly detecting the position degree of the crank spline, in particular to the device for quickly detecting the position degree of the crank spline provided in any one of the above embodiments, and the beneficial effects can be correspondingly referred to the above embodiments. In addition, the crank spline position degree rapid detection system also comprises a crank to be detected.

Specifically, as shown in fig. 1 and 2, the crank 3 includes an end plate 31 and a rod portion 32 fixed to one end of the end plate 31 in a predetermined direction, an involute spline 321 is provided on an outer peripheral surface of the rod portion 32, and a positioning crank pin hole 311 is further provided on the end plate 31 to penetrate in the predetermined direction. During detection, the internal spline hole 12 is used for being in plug-in fit with the involute spline 321, and the part of the detection pin 2 extending out of the positioning plate 1 is used for being in plug-in fit with the positioning crank pin hole 311.

Further, the internal spline hole 12 is 0.02mm larger than the involute spline 321 shaft cross-rod distance. Specifically, as shown in fig. 2, two teeth are removed from one end a of the involute spline 321 near the positioning crank pin hole 311, the positioning crank pin hole 311 is a circular hole, and the difference between the included angles of the circle center of the involute spline 321, the connecting line of the circle centers of the positioning crank pin hole 311, the midpoint of the two tooth removed from the position a, and the connecting line of the circle centers of the positioning crank pin hole 311 is within ± 0.5 °. In addition, the center distance between the detection pin hole 11 and the internal spline hole 12 on the positioning plate 1 is set according to the preset center distance L +/-0.005 mm, and the preset center distance is specifically the center distance between the positioning crank pin hole 311 and the involute spline 321 on the crank 3. In addition, the preset diameter D of the detection pin 2 is designed according to the spline angle error required by a drawing, and the specific size is set according to D (+0.004/0 mm).

In addition to the device and the system for quickly detecting the position degree of the crank spline, the invention also provides a method for quickly detecting the position degree of the crank spline, which is applied to the device and the system for quickly detecting the position degree of the crank spline provided in the embodiments and has the advantages that the above embodiments can be referred to correspondingly.

The method comprises the following steps:

inserting the rod part 32 of the crank 3 into the inner spline hole 12 until the inner spline hole 12 is inserted and matched with the involute spline 321 on the rod part 32;

the crank 3 and the positioning plate 1 are relatively moved along the preset direction, whether the part of the detection pin 2 extending out of the positioning plate 1 can be inserted into the positioning crank pin hole 311 of the crank 3 or not is judged, if yes, the crank spline position degree is qualified, and otherwise, the crank spline position degree is unqualified.

It will be understood that when an element is referred to as being "secured" to another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be construed as limiting the invention.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The device, the system and the method for quickly detecting the position degree of the crank spline provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.