Camshaft excircle hole angle and axial direction testing fixture

Abstract

The utility model discloses a camshaft excircle hole angle and axial direction detection tool, comprising a test bench, two pneumatic center clamping mechanisms distributed left and right are arranged on the test bench, and a clamping port used for clamping a camshaft to be detected is arranged between the two pneumatic center clamping mechanisms. First measuring pin rods capable of measuring pin holes in the left end face of the camshaft to be measured during horizontal movement are arranged on the two sides of the upper portion of the testing table, and two second measuring pin rods distributed left and right are slidably connected to the rear portion, relative to the pneumatic center clamping mechanism, of the upper portion of the testing table. When the second measuring pin rod moves, whether the angle and the position of the axial pin hole of the camshaft to be measured meet requirements or not can be measured. The structure is convenient to operate.

Description

Technical Field

[0001] The utility model belongs to the relevant technical field of inspection tools, and particularly relates to an angle and axial inspection tool for an outer circular hole of a camshaft. Background Art

[0002] There are several requirements for the camshaft outer hole during processing:

[0003] Precision requirements: Since the camshaft needs to withstand high-speed rotation and large torque, there are extremely high requirements for its processing accuracy, because the processing quality of the outer circular hole directly affects the performance and service life of the camshaft;

[0004] Processing difficulty: The processing of the camshaft outer hole involves complex process flow and strict technical requirements, including tool selection, cutting parameter setting, processing method, etc.

[0005] Therefore, after the camshaft outer hole is processed, it needs to be inspected. For the processing quality inspection of the camshaft outer hole, the two main methods are contact inspection and non-contact inspection. Although contact inspection is intuitive, it has low efficiency and large errors; non-contact inspection uses infrared, laser, ultrasonic and other technologies to achieve efficient and high-precision inspection, but the cost is relatively high.

[0006] Therefore, the current problems in detecting the outer circular hole of the camshaft are either the high success rate of the equipment or the high error rate. Utility Model Content

[0007] The utility model aims to provide a camshaft outer hole angle and axial detection device, which solves the problem that the existing detection of the camshaft outer hole is either high in equipment success rate or high in error rate.

[0008] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0009] The utility model discloses a camshaft outer hole angle and axial measuring tool, comprising a test bench, on which two pneumatic center clamping mechanisms are arranged, wherein a clamping opening for clamping the camshaft to be tested is provided between the two pneumatic center clamping mechanisms, and measuring pin rods 1 are arranged on both sides above the test bench, which can measure the left end face pin holes of the camshaft to be tested when the measuring pin rods move horizontally, and two measuring pin rods 2 are slidably connected to the rear of the pneumatic center clamping mechanisms above the test bench, and the measuring pin rods 2 can measure whether the angle and position of the axial pin holes of the camshaft to be tested meet the requirements when the measuring pin rods move.

[0010] Preferably, in order to facilitate the fixing of the product to be tested, two V-shaped positioning frames distributed on the left and right are provided between the two pneumatic center clamping mechanisms, and a V-shaped recess for placing the camshaft to be tested is provided above the V-shaped positioning frame.

[0011] Preferably, to facilitate reference positioning, a U-shaped thrust frame is provided on the right side between the two V-shaped positioning frames, and a U-shaped thrust surface is provided on the U-shaped thrust frame, and the U-shaped thrust surface cooperates with the thrust groove on the camshaft to be tested.

[0012] Preferably, in order to clamp products of different lengths, the pneumatic center clamping mechanism includes a cylinder seat, a pushing cylinder and a center head, the cylinder seat is fixed on the side of the test bench, the pushing cylinder is fixed on the cylinder seat, and the piston rod of the pushing cylinder is connected to the center head, and the tip of the center head is against the end face of the camshaft to be tested.

[0013] Preferably, in order to facilitate operation, a mounting frame 1 is respectively provided on the left and right sides of the test bench, and the piston rod of the pushing cylinder passes through the mounting frame 1 and is connected to the top head, and a through hole 1 is also provided on the mounting frame 1, and the measuring pin rod 1 is movably inserted into the through hole 1.

[0014] Preferably, a mounting frame 2 is provided on the left and right sides of the rear of the test bench, and a through hole 2 is provided on the mounting frame 2, one of the through holes 2 is horizontally arranged, and the other through hole 2 is inclined, and each measuring pin rod 2 is movably inserted into the through hole 2.

[0015] Preferably, in order to facilitate operation, an operating rod is provided on the first measuring pin and an operating handle is provided on the second measuring pin.

[0016] The utility model has the following beneficial effects: when the camshaft to be measured is placed horizontally, the thrust groove is placed into the U-shaped thrust surface, and it is manually fitted as the axial zero point. The pneumatic center clamping mechanism on both sides is used to clamp the camshaft to be measured to determine the axial zero point. When the measuring pin rod 1 is inserted into the end face pin hole, the circumferential angle is confirmed, and the outer circle measuring pin rod 2 is gently pushed to judge whether the axial direction and the outer circle angle of the outer circle hole are qualified. When the measuring pin rod 2 is gently pushed, it is inserted into the outer circle hole without hindrance, indicating that the axial direction is qualified. Therefore, the utility model has a simple structure, is highly practical, and is conducive to improving measurement efficiency. It is convenient for online quality control and has the following advantages: 1. The measurement is convenient, fast, low-cost, and accurate in inspection; 2. It is combined with the end face hole position gauge for easy operation; 3. The gauge is quenched, not easy to wear, and has a longer service life; 4. It can be applied to the axial and angle detection of the outer circle holes of a wide range of camshafts to improve online detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A top view of a camshaft outer hole angle and axial gauge in Example 1 when no measuring pin is installed on the right side;

[0018] Figure 2It is a front view of a camshaft outer hole angle and axial inspection fixture in Example 1;

[0019] Figure 3 This is a schematic diagram of the connection structure between the left mounting frame 2 and the measuring pin 2 in Example 1;

[0020] Figure 4 This is a schematic diagram of the connection structure between the right side mounting frame 2 and the measuring pin 2 in Example 1;

[0021] Figure 5 It is a left side schematic diagram of the V-shaped positioning frame in Example 1;

[0022] Figure 6 It is a left side schematic diagram of a U-shaped thrust frame in Example 1;

[0023] Figure 7 This is a front view of a U-shaped thrust bracket in Example 1.

[0024] Reference numerals:

[0025] Test bench 1, pneumatic center clamping mechanism 2, cylinder seat 201, pushing cylinder 202, center head 203, camshaft to be tested 4, thrust groove 401, clamping mouth 3, measuring pin rod 1 5, measuring pin rod 2 6, V-shaped positioning frame 7, V-shaped notch 8, U-shaped thrust frame 9, U-shaped thrust surface 10, mounting frame 1 11, through hole 1 12, mounting frame 2 13, through hole 2 14, operating rod 15, operating handle 16. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0027] See also Figure 1-7As shown, the present embodiment discloses a camshaft outer hole angle and axial gauge, comprising a test bench 1, on which are arranged two pneumatic center clamping mechanisms 2 distributed on the left and right, a clamping opening 3 for clamping the camshaft 4 to be tested is provided between the two pneumatic center clamping mechanisms 2, and measuring pins 5 which can measure the left end face pin holes of the camshaft 4 to be tested when moved horizontally are also provided on both sides above the test bench 1, and two measuring pins 6 distributed on the left and right are also slidably connected at the rear of the pneumatic center clamping mechanisms 2 above the test bench 1, and the measuring pins 6 can measure whether the angle and position of the axial pin holes of the camshaft 4 to be tested meet the requirements when moving.

[0028] Preferably, in order to facilitate the fixing of the product to be tested, two V-shaped positioning frames 7 distributed on the left and right are provided between the two pneumatic center clamping mechanisms 2, and a V-shaped recess 8 for placing the camshaft 4 to be tested is provided above the V-shaped positioning frames 7.

[0029] Preferably, to facilitate reference positioning, a U-shaped thrust frame 9 is provided on the right side between the two V-shaped positioning frames 7, and a U-shaped thrust surface 10 is provided on the U-shaped thrust frame 9, and the U-shaped thrust surface 10 cooperates with the thrust groove 401 on the camshaft 4 to be tested.

[0030] Preferably, in order to clamp products of different lengths, the pneumatic top clamping mechanism 2 includes a cylinder seat 201, a pushing cylinder 202 and a top head 203. The cylinder seat 201 is fixed on the side of the test bench 1, the pushing cylinder 202 is fixed on the cylinder seat 201, and the piston rod of the pushing cylinder 202 is connected to the top head 203. The tip of the top head 203 is against the end face of the camshaft 4 to be tested. When working, the pushing cylinder 202 is driven to work, driving the top head 203 to move horizontally, and both sides are operated simultaneously to realize the clamping operation of the camshaft 4 to be tested of different lengths.

[0031] Preferably, for the convenience of operation, a mounting frame 11 is provided on the left and right sides of the test bench 1 respectively, the piston rod of the pushing cylinder 202 passes through the mounting frame 11 and is connected with the top head 203, and a through hole 12 is provided on the mounting frame 11, and the measuring pin 5 is movably inserted in the through hole 12, and a mounting frame 13 is provided on the left and right sides of the rear of the test bench 1, and a through hole 14 is provided on the mounting frame 13, one of the through holes 14 is horizontally arranged, and the other through hole 14 is inclined, and each measuring pin 6 is movably inserted in the through hole 14.

[0032] Preferably, for the convenience of operation, an operating rod 15 is provided on the measuring pin rod 1 5 , and an operating handle 16 is provided on the measuring pin rod 2 6 . By adding the operating handle 16 and the operating rod 15 , it is convenient to push the measuring pin rod 2 6 or the measuring pin rod 1 5 .

[0033] This structure can only confirm whether the angle and axial direction of the outer hole are qualified. It is a counting type inspection fixture and cannot be used for outer hole processing adjustment inspection;

[0034] This structure operates as follows:

[0035] The camshaft 4 to be tested is placed horizontally, and the thrust groove 401 is placed into the U-shaped thrust surface 10, and manually fitted as the axial zero point. The camshaft 4 to be tested is clamped by the pneumatic center clamping mechanism 2 on both sides to determine the axial zero point. When the measuring pin rod 1 5 is inserted into the end face pin hole, the circumferential angle is confirmed, and the outer circle measuring pin rod 2 6 is gently pushed to determine whether the axial direction and the outer circle angle of the outer circle hole are qualified. When the measuring pin rod 2 6 is gently pushed, it is inserted into the outer circle hole without hindrance, indicating that the axial direction is qualified. Therefore, the utility model has a simple structure, is highly practical, and is conducive to improving measurement efficiency. It is convenient for online quality control and has the following advantages: 1. The measurement is convenient, fast, low-cost, and accurate in inspection; 2. It is combined with the end face hole position gauge for easy operation; 3. The gauge is quenched, not easy to wear, and has a longer service life; 4. It can be applied to a wide range of camshaft outer circle hole axial and angle detection to improve online detection efficiency. It should be noted that when manufacturing this device, the positions of measuring pin 1 5 and measuring pin 2 6 need to be determined in advance to ensure that they are just within the qualified range of the price product. Therefore, multiple calibrations are required when processing this device.

[0036] The above are only preferred embodiments of the present invention and do not limit the present invention. Any modification to the technical solutions recorded in the aforementioned embodiments and any equivalent replacement of some of the technical features therein, any modification, equivalent replacement, and improvement made are all within the protection scope of the present invention.

Claims

1. A camshaft outer hole angle and axial test fixture, comprising a test bench (1), characterized in that: Two pneumatic center clamping mechanisms (2) are arranged on the test bench (1), and a clamping opening (3) for clamping a camshaft (4) to be tested is arranged between the two pneumatic center clamping mechanisms (2). A measuring pin rod (5) is arranged on both sides above the test bench (1) and is capable of measuring the pin hole on the left end face of the camshaft (4) to be tested when it moves horizontally. Two measuring pin rods (6) are also slidably connected to the rear of the pneumatic center clamping mechanisms (2) above the test bench (1). When the measuring pin rods (6) move, they are capable of measuring whether the angle and position of the axial pin hole of the camshaft (4) to be tested meet the requirements.

2. The camshaft outer hole angle and axial detection fixture according to claim 1, characterized in that: Two V-shaped positioning frames (7) distributed on the left and right are also arranged between the two pneumatic center clamping mechanisms (2), and a V-shaped recess (8) for placing the camshaft (4) to be tested is arranged above the V-shaped positioning frames (7).

3. The camshaft outer hole angle and axial detection fixture according to claim 2, characterized in that: A U-shaped thrust frame (9) located on the right side is arranged between the two V-shaped positioning frames (7), and a U-shaped thrust surface (10) is arranged on the U-shaped thrust frame (9), wherein the U-shaped thrust surface (10) cooperates with a thrust groove (401) on the camshaft (4) to be tested.

4. The camshaft outer hole angle and axial detection fixture according to claim 1, 2 or 3, characterized in that: The pneumatic center pin clamping mechanism (2) comprises a cylinder seat (201), a push cylinder (202) and a center pin head (203); the cylinder seat (201) is fixed to the side of the test bench (1); the push cylinder (202) is fixed to the cylinder seat (201); the piston rod of the push cylinder (202) is connected to the center pin head (203); the tip of the center pin head (203) abuts against the end face of the camshaft (4) to be tested.

5. The camshaft outer hole angle and axial detection fixture according to claim 4, characterized in that: A mounting frame (11) is provided on the left and right sides of the test bench (1), respectively. The piston rod of the push cylinder (202) passes through the mounting frame (11) and is connected to the top head (203). The mounting frame (11) is also provided with a through hole (12), and the measuring pin (5) is movably inserted into the through hole (12).

6. The camshaft outer hole angle and axial detection fixture according to claim 5, characterized in that: A second mounting frame (13) is also provided on the left and right sides of the rear of the test bench (1), and two through holes (14) are provided on the second mounting frame (13), wherein one of the second through holes (14) is horizontally arranged and the other second through hole (14) is inclinedly arranged, and each second measuring pin rod (6) is movably inserted into the second through hole (14).

7. The camshaft outer hole angle and axial detection fixture according to claim 5 or 6, characterized in that: An operating rod (15) is provided on the measuring pin rod 1 (5), and an operating handle (16) is provided on the measuring pin rod 2 (6).

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