CN219141723U

CN219141723U - Camshaft timing angle gauge

Info

Publication number: CN219141723U
Application number: CN202223139208.0U
Authority: CN
Inventors: 叶昌霞
Original assignee: Chongqing Jucheng Machinery Co ltd
Current assignee: Chongqing Jucheng Machinery Co ltd
Priority date: 2022-11-25
Filing date: 2022-11-25
Publication date: 2023-06-06
Anticipated expiration: 2032-11-25

Abstract

The utility model discloses a cam shaft timing angle gauge which comprises a body, clamping blocks and a conversion pin assembly, wherein a movable hole is formed in the middle of the body, sliding grooves are formed in two sides of the movable hole, the clamping blocks are movably arranged in the movable hole, limiting parts are arranged on two sides of the clamping blocks and are slidably arranged in the sliding grooves, and the rear ends of the clamping blocks are provided with threaded rod drives. The conversion pin assembly comprises a vertical reference pin and a helical tooth pin, the end part of the body is provided with a mounting hole in the vertical direction and the helical tooth angle direction corresponding to the cam shaft, and the vertical reference pin and the helical tooth pin are respectively and correspondingly arranged in the mounting hole. According to the vertical reference pin and the skewed tooth pin, the timing teeth are converted through the skewed tooth pin and the vertical reference pin, the vertical reference pin is used as a detection reference, the angle between the vertical reference pin and the highest point of the exhaust cam is correspondingly detected, and the angle between the timing teeth and the exhaust cam is converted into the accurate detection of the timing angle, so that the timing angle of the cam shaft is ensured to be within a standard tolerance range, and the product quality of the cam shaft is improved.

Description

Camshaft timing angle gauge

Technical Field

The utility model belongs to the technical field of camshaft processing, and particularly relates to a camshaft timing angle gauge.

Background

The camshaft is a component in a piston engine that functions to control the opening and closing actions of the valves. With the design requirements of high speed, high output power, low fuel oil additivity, low cost input and the like of the engine. In order to meet the existing quality and cost requirements, the contribution of the camshaft to the engine also puts higher design requirements, and the timing angle of the camshaft is taken as an important standard and is kept within the range of the design requirements. The timing angle of the cam shaft, namely the included angle between the timing teeth on the cam shaft and the highest point of the exhaust cam, is converted into the included angle in the same plane, namely the included angle between the connecting line of the timing teeth and the central axis of the cam shaft and the connecting line of the highest point of the exhaust cam and the central axis of the cam shaft.

Therefore, the qualification standard of the camshaft product is particularly important for detecting the timing angle, but in the existing timing angle detection, when the timing teeth are straight teeth, the timing angle can be detected through a standard pin arranged in the vertical direction, but when the timing teeth with different standards or different inclinations are detected in position angle, the included angle between the timing teeth and the highest position of the exhaust cam can not be detected by finding out the detection reference, and at the moment, the problem of how to detect the angle of the timing teeth of the inclined teeth after conversion to improve the timing angle detection precision is urgently solved, so that the product quality of the camshaft is improved.

Disclosure of Invention

In view of the above-mentioned shortcomings, the present utility model aims to provide a cam shaft timing angle gauge, which solves the problems of inconvenient timing angle detection and low precision between timing teeth with different standards or different inclinations and an exhaust cam in the prior art.

In order to achieve the above purpose, the technical scheme provided by the utility model is as follows:

the utility model provides a camshaft angle of timing examines utensil, includes the body, blocks and change pin assembly hold, the body middle part has been seted up the movable hole, and the both sides of movable hole continue to extend to run through and have been seted up the spout, block activity is held in the movable hole, and both sides are equipped with spacing portion and slidingly install in the spout, the rear end of block is held and is equipped with the threaded rod and drive its removal;

the conversion pin assembly comprises a vertical reference pin and a helical tooth pin, wherein the end part of the body is provided with a mounting hole in the vertical direction and the helical tooth angle direction corresponding to the cam shaft, and the vertical reference pin and the helical tooth pin are respectively and correspondingly arranged in the mounting hole.

By adopting the structural design, when the timing angle gauge is used, the cam shaft is arranged on the gauge, the inclined tooth pin and the timing tooth of the conversion pin assembly arranged on the gauge are meshed with each other, the resin-based standard pin is matched, the cam shaft is used as a positioning reference, the included angle between the timing tooth and the highest point of the exhaust cam on the cam shaft is converted according to the angle position relation of the vertical standard pin and the inclined tooth pin, the timing angle of the cam shaft is accurately detected by the angle detector, and whether the timing angle of the cam shaft meets the product standard is checked.

Preferably, the one end of body outwards is equipped with the installation department, vertical direction and inclined mounting hole have all been seted up on the installation department, and the upper end of vertical reference pin is protruding to stretch out the upper surface of installation department, and the lower extreme of oblique tooth round pin is protruding to stretch out the lower surface of installation department.

By adopting the structural design, the skewed tooth pin is arranged corresponding to the angle of the timing tooth on the cam shaft and is correspondingly clamped in the tooth slot, and the included angle between the timing tooth and the highest point of the exhaust cam on the cam shaft can be converted into a vertical reference pin which is convenient to detect for detection.

Preferably, the clamping block comprises a clamping part, the limiting parts extend from two sides of the clamping part, and the front end of the clamping part is in a V-shaped structure and forms a clamping station with the front end of the movable hole.

By adopting the structural design, the front end of the clamping part is of a V-shaped structural design and can move back and forth, the clamping parts of the camshafts according to different sizes are convenient to fix, and the universality is stronger.

Preferably, the contact surface of the clamping station is provided with anti-skid patterns.

By adopting the structural design, the anti-skid patterns are arranged on the contact surface of the clamping station, the side surface of the V-shaped structure and the front side wall of the movable hole, and the clamping effect is better when the clamping is fixed.

Preferably, the movable hole penetrates up and down and extends backwards to penetrate through the movable hole, a limiting block is arranged at the rear end of the movable hole, two sides of the limiting block extend to form a fixing part, and the fixing part is arranged at the rear end of the sliding groove and fixedly connected with the body.

By adopting the structural design, the limiting block fixedly arranged at the rear end of the movable hole adopts a detachable design, so that the clamping block can be conveniently disassembled and assembled, and the threaded rod at the rear end can be supported in the moving process of the clamping block.

Preferably, the threaded rod passes one end of the limiting block and is in abutting contact with the clamping block, the other end of the threaded rod protrudes out of the limiting block, and a handle for rotating is arranged at the end part of the threaded rod.

Preferably, a spring is arranged in the chute, one end of the spring abuts against the inner wall of the chute, and the other end abuts against the limiting part of the clamping block.

By adopting the structural design, the installation of the spring, when the cam shaft is required to be fixed through the clamping block, the clamping block is pushed forward to move forward through the rotation of the threaded rod to fix, the spring is compressed at the moment, when the cam shaft is required to be taken out, the threaded rod rotates backwards, and the clamping block is pushed backwards through the elastic force of the spring to move at the moment, so that the cam shaft is taken out.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the camshaft timing angle gauge, the timing teeth of the camshaft are converted through the inclined tooth pins and the vertical reference pins through the vertical reference pins and the inclined tooth pins arranged on the body, the vertical reference pins are used as detection references, the angles of the highest points of the vertical reference pins and the exhaust cam are correspondingly detected, and finally the angles of the timing teeth and the exhaust cam are converted, so that accurate detection of the timing angles is realized, the timing angles of the camshaft are guaranteed to be within a standard tolerance range, and the product quality of the camshaft is improved.

2. According to the utility model, the clamping block is movably arranged in the movable hole, and the limiting parts are arranged at the two sides and are slidably arranged in the sliding groove, so that the limiting parts at the two sides are used for limiting in the front and back moving process of the clamping block, and the camshaft is clamped and fixed after moving, so that the position deviation can not occur.

3. The spring is arranged in the chute, one end of the spring is propped against the inner wall of the chute, the other end of the spring is propped against the limiting part of the clamping block, when the camshaft is required to be fixed through the clamping block, the clamping block is pushed forward to move forward to be fixed through the rotation of the threaded rod, the spring is compressed at the moment, when the camshaft is required to be taken out, the threaded rod is rotated backward, and at the moment, the clamping block is pushed backward to move through the elastic force of the spring, so that the camshaft is taken out.

4. The stopper that the fixed setting of movable hole rear end adopted detachable design, when should examine under the circumstances that the piece damaged is held to the card appears after long-term use, can dismantle the stopper back and change the card and hold the piece, play the effect of support to the threaded rod of rear end at the removal in-process that the piece was held to the card simultaneously.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of a camshaft mounted on the camshaft timing angle inspection tool of the present utility model.

The camshaft 100, the exhaust cam 110, the body 1, the movable hole 1a, the chute 1b, the mounting hole 1c, the mounting portion 1d, the holding block 2, the limiting portion 2a, the holding portion 2b, the switching pin assembly 3, the vertical reference pin 3a, the helical tooth pin 3b, the threaded rod 4, the handle 4a, the limiting block 5, the fixing portion 5a, and the spring 6.

Detailed Description

In order to describe the technical content, the constructional features, the achieved objects and effects of the present utility model in detail, the following description is made in connection with the embodiments and the accompanying drawings.

Example 1

Referring to fig. 1 and 2, a cam shaft timing angle gauge comprises a body 1, a clamping block 2 and a conversion pin assembly 3, wherein a movable hole 1a is formed in the middle of the body 1, sliding grooves 1b are continuously formed in the two sides of the movable hole 1a in a penetrating manner, the clamping block 2 is movably arranged in the movable hole 1a, limiting parts 2a are arranged on the two sides of the clamping block and slidably arranged in the sliding grooves 1b, and a threaded rod 4 is arranged at the rear end of the clamping block 2 to drive the clamping block to move. The conversion pin assembly 3 comprises a vertical reference pin 3a and a helical tooth pin 3b, the end part of the body 1 is provided with a mounting hole 1c in the vertical direction and the helical tooth angle direction corresponding to the cam shaft 100, and the vertical reference pin 3a and the helical tooth pin 3b are respectively and correspondingly arranged in the mounting hole 1 c. When the cam shaft timing angle gauge is used, the upper end of the cam shaft 100 is arranged in the movable hole 1a, and the position of the gauge is adjusted so that the skewed tooth pin 3b corresponds to the timing tooth, wherein the timing tooth has a clear mark on the cam shaft gear, so that the timing tooth can be easily distinguished. The vertical reference pin 3a and the helical tooth pin 3b are drilled simultaneously, the vertical reference pin 3a and the helical tooth pin 3b are installed, when the installation hole 1c is machined, the converted angle and the position relationship are calculated in advance, the positions of the two installation holes 1c are further determined, and the consistency can be ensured when the angle conversion is carried out. When the timing angle is detected, the vertical reference pin 3a serving as a reference can be converted after the angle is tested, so that the detection is more convenient, and the precision is higher. In the present embodiment, the gauge is used in combination with an angle detection apparatus by which an angle test is performed with the vertical reference pin 3a and the exhaust cam 110 of the camshaft 100 as detection references, and then the detected angle is computationally converted into an angle between the timing teeth having an angle and the exhaust cam, i.e., a timing angle.

With continued reference to fig. 1, specifically, an installation portion 1d is disposed at one end of the body 1, the vertical direction and the inclined installation hole 1c are both disposed on the installation portion 1d, the upper end of the vertical reference pin 3a protrudes from the upper surface of the installation portion 1d, and the lower end of the inclined tooth pin 3b protrudes from the lower surface of the installation portion 1 d. Wherein, the angle of the mounting hole 1c corresponding to the bevel gear pin 3b is set according to the angle of the gear, so as to facilitate the angle conversion.

The clamping block 2 comprises a clamping part 2b, the limiting parts 2a are formed by extending from two sides of the clamping part 2b, and the front end of the clamping part 2b is in a V-shaped structure and forms a clamping station with the front end of the movable hole 1 a. In this embodiment, the left direction in the drawing and the position of the switching pin assembly 3 are defined as the front end, and vice versa. The front end of the clamping part 2b is in a V-shaped structure, when the clamping is fixed, because the upper end of the cam shaft 100 is in a cylindrical structure, if the clamping station is designed into a circular structure, that is, the front end of the clamping part 2b is designed into a semicircular structure, the problem that the contact surface cannot be well contacted and the stability is fixed because the upper end of the cam shaft and the size of the clamping station are not corresponding is easy. After adopting V-arrangement structure, the contact surface of front end just can appear along with the removal of block 2 is held with camshaft contact card gradually, and stability is stronger.

The movable hole 1a runs through from top to bottom and runs through backward and sets up the formation, and the rear end is equipped with stopper 5, and the both sides of stopper 5 extend and form fixed part 5a, and fixed part 5a installs in the rear end of spout 1b and with body 1 fixed connection, in this embodiment, the fixed adoption bolt or screw that pass between fixed part 5a and the body 1 is fixed, when the card holds piece 2 and damage needs to change, the removable fixed mode of stopper 5 also is convenient for the card and holds piece 2's change. When the clamping block 2 is replaced, the limiting block 5 is opened, the limiting block 5 is taken out after being moved backwards, and the clamping block 2 is taken out after sliding backwards in the same way. The threaded rod 4 passes through one end of the limiting block 5 to be connected with the clamping block 2, the other end of the threaded rod protrudes out of the limiting block 5, and a handle 4a for rotating is arranged at the end part of the threaded rod.

As a further improvement, a spring 6 is disposed in the chute 1b, and one end of the spring 6 abuts against the inner wall of the chute 1b, and the other end abuts against the limiting portion 2a of the clamping block 2. The spring 6 is arranged so that after the clamping block 2 completes clamping of the cam shaft, the clamping block 2 is pushed to be separated from the cam shaft when the cam shaft is taken out.

Example 2

Other structures in the embodiment are the same as those in embodiment 1, and the difference is that the contact surface of the clamping station is provided with anti-skid patterns, so that the stability is better when the upper end of the cam shaft is fixed.

The working principle of the utility model is as follows:

when the timing angle of the camshaft 100 needs to be detected, the upper end of the camshaft 100 is installed in the movable hole 1a of the detecting tool, the inclined tooth pin 3b is clamped in the tooth slot by the alignment timing tooth, then the clamping block 2 is pushed forward by manually rotating the threaded rod 4, the limiting part 2a of the clamping block 2 compresses the spring 6 until the camshaft is fixed, then the camshaft and the detecting tool are installed on the detecting equipment, the highest point of the exhaust cam 110 is aligned with the vertical reference pin 3a and the exhaust cam of the camshaft as references for angle detection, and meanwhile, the angle between the timing tooth and the highest point of the exhaust cam, namely the timing angle of the camshaft, is converted by the angular position relation between the vertical reference pin 3a and the inclined tooth pin 3 b.

Variations and modifications to the above would be obvious to persons skilled in the art to which the utility model pertains from the foregoing description and teachings. Therefore, the utility model is not limited to the specific embodiments disclosed and described above, but some modifications and changes of the utility model should be also included in the scope of the claims of the utility model. In addition, although specific terms are used in the present specification, these terms are used for convenience of description only and do not limit the present utility model in any way, and other devices identical or similar to the present utility model are used within the scope of the present utility model.

Claims

1. The utility model provides a camshaft timing angle examines utensil, its characterized in that includes body (1), blocks (2) and change over pin assembly (3) are held to the card, movable hole (1 a) has been seted up at body (1) middle part, and the both sides of movable hole (1 a) continue to extend and have run through and have seted up spout (1 b), block (2) are held in movable hole (1 a), and both sides are equipped with spacing portion (2 a) and slidingly install in spout (1 b), the rear end of block (2) is held to the card is equipped with threaded rod (4) and drives its removal;

the conversion pin assembly (3) comprises a vertical reference pin (3 a) and a helical tooth pin (3 b), the end part of the body (1) is provided with a mounting hole (1 c) in the vertical direction and the helical tooth angle direction corresponding to the cam shaft, and the vertical reference pin (3 a) and the helical tooth pin (3 b) are respectively correspondingly arranged in the mounting hole (1 c).

2. The camshaft timing angle gauge according to claim 1, wherein one end of the body (1) is provided with an installation portion (1 d) outwards, the vertical direction and the inclined installation hole (1 c) are both formed in the installation portion (1 d), the upper end of the vertical reference pin (3 a) protrudes from the upper surface of the installation portion (1 d), and the lower end of the bevel pin (3 b) protrudes from the lower surface of the installation portion (1 d).

3. The cam shaft timing angle gauge according to claim 1, wherein the clamping block (2) comprises a clamping portion (2 b), the limiting portion (2 a) is formed by extending from two sides of the clamping portion (2 b), and the front end of the clamping portion (2 b) is in a V-shaped structure and forms a clamping station with the front end of the movable hole (1 a).

4. A cam shaft timing angle gauge as claimed in claim 3 wherein the contact surface of the clamping station is provided with anti-slip patterns.

5. The camshaft timing angle gauge according to claim 1, wherein the movable hole (1 a) is formed by penetrating up and down and extending backward, a limiting block (5) is arranged at the rear end, fixing parts (5 a) are formed by extending two sides of the limiting block (5), and the fixing parts (5 a) are arranged at the rear end of the sliding groove (1 b) and fixedly connected with the body (1).

6. The cam shaft timing angle gauge according to claim 5, wherein the threaded rod (4) passes through one end of the limiting block (5) to be in abutting contact with the clamping block (2), the other end of the threaded rod protrudes out of the limiting block (5), and a handle (4 a) for rotation is arranged at the end part of the threaded rod.

7. The cam shaft timing angle gauge according to claim 1, wherein a spring (6) is arranged in the sliding groove (1 b), one end of the spring (6) abuts against the inner wall of the sliding groove (1 b), and the other end abuts against the limiting part (2 a) of the clamping block (2).