A jig for crankshaft detection

Abstract

The application relates to a clamp for crankshaft detection, which comprises a bottom plate, two end-point clamping structures, a first clamping piece arranged on each of the end-point clamping structures, a limiting area for placing one end of a crankshaft on the clamping piece, a sliding groove arranged on the bottom plate, a sliding block slidingly connected in the sliding groove, a cushion block connected with the sliding block, and a second clamping piece arranged on the bottom plate. The cushion block and the second clamping piece are moved by sliding the sliding block in the sliding groove, the length of the clamped crankshaft is adjusted according to the distance between the two cushion blocks, the two ends of the crankshaft can be placed on the first clamping pieces respectively, and the staff can rotate the crankshaft for detection. Therefore, the distance between the two clamped crankshafts is adjusted by the movement of the sliding block, and the function of erecting crankshafts with different lengths is realized.

Description

Technical Field

[0001] This application relates to the technical field of crankshaft manufacturing, and in particular to a crankshaft inspection fixture. Background Technology

[0002] The crankshaft is a core component of an internal combustion engine. Its function is to convert the reciprocating linear motion of the piston into rotational motion, thereby outputting power. Crankshafts are mainly produced by casting. Since cast crankshafts are relatively rough, they need to undergo a series of tests to ensure their quality.

[0003] Before crankshaft inspection, the crankshaft needs to be fixed to facilitate operation. In the existing technology, the two ends of the crankshaft are placed on brackets with a fixed spacing, so that the crankshaft is fixed between the two brackets. However, the crankshaft lengths of different internal combustion engines are different, so the existing fixing method can only meet the inspection conditions of crankshafts of a single length. Summary of the Invention

[0004] This application provides a crankshaft inspection fixture to solve the problem in related technologies that can only meet the inspection conditions of a single-length crankshaft.

[0005] In a first aspect, a crankshaft inspection fixture is provided, comprising:

[0006] Base plate;

[0007] Two end clamping structures, each of the end clamping structures having a first clamping member, the clamping member having a limiting area for placing one end of the crankshaft, the end clamping structure including;

[0008] - A sliding groove, wherein the sliding groove is disposed on the base plate;

[0009] - A slider, which is slidably connected within the groove;

[0010] - A pad, which is connected to the slider;

[0011] The second clamping member is disposed on the base plate and between the two pads. The second clamping member has a snap-fit ​​space for placing the crankshaft connecting journal.

[0012] In some embodiments, the end-point clamping structure further includes a first screw;

[0013] The screw is rotatably connected to the slide groove, passes through the slider, and engages with the slider.

[0014] In some embodiments, the end-point clamping structure further includes several lifting components;

[0015] One end of the lifting component is connected to the pad block, and the other end of the lifting component is connected to the first clamping component.

[0016] In some embodiments, the first clamping member includes a cross plate and two clamps;

[0017] The horizontal plate is slidably connected to the pad block, and the two clamps are arranged opposite to each other and are slidably connected to the horizontal plate.

[0018] In some embodiments, the first clamping member further includes a second screw;

[0019] The second screw is rotatably connected to the horizontal plate, passes through the chuck, and engages with the chuck.

[0020] In some embodiments, a mounting plate is also included;

[0021] The mounting plate is connected to the base plate, and the mounting plate is connected to the second clamping member.

[0022] In some embodiments, slots and inserts are also included;

[0023] The slot is disposed on the mounting plate, and the length extension direction of the slot is the same as the extension direction of the slide. The insert is on the second clamping member, and the insert can be inserted into the slot.

[0024] This application provides a crankshaft inspection fixture. By using a slider to slide in a groove, the fixture moves the pad and the second clamping member thereon. The distance between the two pads is adjusted according to the length of the crankshaft to be clamped, so that both ends of the crankshaft can be placed on the first clamping member respectively, making it convenient for the operator to rotate the crankshaft for inspection. Therefore, this application can adjust the distance between the two clamping crankshafts by moving the slider to achieve the function of mounting crankshafts of different lengths. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the structure provided for an embodiment of this application;

[0027] Figure 2 A schematic diagram of the end-point clamping structure is provided for an embodiment of this application;

[0028] Figure 3A structural schematic diagram of the lifting component is provided for the embodiments of this application;

[0029] Figure 4 A schematic diagram of the structure of the first clamping member is provided for the embodiments of this application;

[0030] Figure 5 A schematic diagram of the structure of the second clamping member is provided for the embodiments of this application.

[0031] In the diagram: 1. Base plate; 2. End clamping structure; 21. Slide groove; 22. Slider; 23. Pad block; 24. First screw; 25. Lifting component; 3. First clamping component; 31. Horizontal plate; 32. Chuck; 33. Second screw; 4. Second clamping component; 5. Mounting plate; 6. Slot; 7. Insert block. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] This application provides a crankshaft inspection fixture that solves the problem in related technologies that can only meet the inspection conditions of a single-length crankshaft.

[0034] Please see Figures 1 to 5 A crankshaft inspection fixture, comprising: (See also) Figures 1 to 5 A crankshaft inspection fixture is provided, comprising: This application provides a crankshaft inspection fixture designed to address the problem that existing fixing methods can only meet the inspection requirements of crankshafts of different lengths due to variations in crankshaft length. The fixture includes a base plate 1, two end clamping structures 2, and a second clamping member 4. The base plate 1 provides the basic structure of the entire fixture. The two end clamping structures 2, through the cooperation of a sliding groove 21, a sliding block 22, and a pad 23, allow the first clamping member 3 to be flexibly adjusted in position to accommodate crankshafts of different lengths. A limiting area is used to fix one end of the crankshaft, ensuring stability during inspection. The second clamping member 4 is located between the two pads 23 and provides a snap-fit ​​space for fixing the connecting journal of the crankshaft, further ensuring the stability of the crankshaft. Through the combination of the above technical features, the problem that existing technologies can only meet the inspection requirements of crankshafts of different lengths is solved, achieving reliable fixing of crankshafts of different lengths.

[0035] Specifically, the crankshaft inspection fixture of the present invention includes a base plate 1 and two end clamping structures 2. Each end clamping structure 2 is provided with a first clamping member 3, which has a limiting area for placing one end of the crankshaft. The end clamping structure 2 includes a sliding groove 21, a slider 22, and a pad 23. The sliding groove 21 is disposed on the base plate 1, the slider 22 is slidably connected in the sliding groove 21, and the pad 23 is connected to the slider 22. Through the cooperation of the sliding groove 21, the slider 22, and the pad 23, the position of the first clamping member 3 can be flexibly adjusted to adapt to crankshafts of different lengths. The limiting area is used to restrict one end of the crankshaft, placing the crankshaft between the two first clamping members 3, so that the operator can easily rotate the crankshaft during inspection. The second clamping piece 4 is located between the two pads 23 and provides a snap-fit ​​space for fixing the connecting journal of the crankshaft, further ensuring the stability of the crankshaft. Thus, through the combination of the above technical features, the problem that the existing technology can only meet the testing of a single length of crankshaft is solved, and reliable fixing of crankshafts of different lengths is achieved. It should be noted that when the second clamping piece 4 is snapped on the connecting journal, the crankshaft cannot rotate, which facilitates the grinding work.

[0036] Furthermore, this application also proposes that the end clamping structure 2 further includes a first screw 24, which is rotatably connected in the slide groove 21, passes through the slider 22, and cooperates with the slider 22;

[0037] By setting a first screw 24, which is rotatably connected to the slide groove 21 and passes through and engages with the slider 22, the slider 22 can be moved within the slide groove 21 by rotating the screw. This design effectively achieves the stability and precise positioning of the slider 22, thereby solving the problem of the stability and precise positioning of the slider 22 within the slide groove 21.

[0038] The screw can be rotated manually or electrically. Specifically, a handwheel or motor can be installed at one end of the slide groove 21, and the screw can be rotated by rotating the handwheel or starting the motor. The screw and the slider 22 can be connected by a threaded connection, and the rotation of the screw will cause the slider 22 to move along the slide groove 21.

[0039] Furthermore, this application also proposes that the end clamping structure 2 further includes a plurality of lifting members 25; one end of the lifting member 25 is connected to the pad block 23, and the other end of the lifting member 25 is connected to the first clamping member 3.

[0040] The lifting component 25 can be a hydraulic rod. Multiple lifting components 25 are evenly arranged below the horizontal plate 3131. The lifting component 25 can provide vertical adjustment during the crankshaft inspection process by connecting the pad 23 and the first clamping component 3, so that the first clamping component 3 can more stably fix the end point of the crankshaft, thereby improving the stability and accuracy of the crankshaft during the inspection process.

[0041] Furthermore, this application also proposes that the first clamping member 3 includes a horizontal plate 31, a second screw 33, and two clamps 32. The horizontal plate 31 is slidably connected to the pad block 23, and the two clamps 32 are arranged opposite to each other and slidably connected to the horizontal plate 31;

[0042] The horizontal plate 31 is slidably connected to the pad 23, so that the height of the horizontal plate 31 can be adjusted by the lifting component 25 to accommodate crankshafts of different sizes. The two chucks 32 are arranged opposite to each other and slidably connected to the horizontal plate 31, so that the two ends of the crankshaft can be clamped by adjusting the position of the chucks 32. This design can solve the problem of unstable fixation during the inspection caused by the different sizes of the two ends of the crankshaft. The sliding connection between the horizontal plate 31 and the chucks 32 allows the fixture to adapt to crankshafts of different sizes, and the crankshaft can be fixed by adjusting the position of the chucks 32, thereby improving the accuracy and reliability of the inspection.

[0043] It should be noted that the second screw 33 can be driven by a motor, which in turn drives the two chucks 32 to move on the horizontal plate 31.

[0044] Furthermore, this application also proposes that it further includes a mounting plate 5, a slot 6, and a plug 7; the mounting plate 5 is connected to the base plate 1 and is connected to the second clamping member 4; the slot 6 is disposed on the mounting plate 5; the length extension direction of the slot 6 is the same as the extension direction of the slide 21; the plug 7 is on the second clamping member 4; and the plug 7 can be inserted into the slot 6.

[0045] The threads at both ends of the first screw 24 and the second screw 33 are opposite threads, so that when the first screw 24 or the second screw 33 rotates, the pad 23 or the chuck 32 moves closer or further away from each other at the same time. This ensures that the center line of the crankshaft after clamping is parallel to the slide groove 21, that is, the crankshaft connecting journal is parallel to the slide groove 21. Therefore, by setting the mounting plate 5 along the slide groove 21, the second clamping piece 4 can lock the connecting journal and limit its position when the crankshaft is at a certain height, which is convenient for operation.

[0046] The working principle of this application is as follows:

[0047] This application requires first adjusting the distance between the two pads 23 and selecting a suitable second clamping component 4 according to the length of the crankshaft and the size of the connecting journal. First, place both ends of the crankshaft on the horizontal plate 31, and then move the two clamps 32 so that the two clamps 32 are close to the crankshaft to clamp it, which is convenient for the staff to inspect. After the inspection is completed, the crankshaft can be rotated so that the connecting journal is facing down, and the second mounting component is installed on the mounting plate 5 by inserting the plug into the slot 6. The crankshaft is lowered by controlling the lifting component 25 so that one section of the connecting journal enters the second mounting component to fix the crankshaft, which is convenient for the staff to grind and correct the crankshaft.

[0048] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0049] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0050] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A fixture for crankshaft inspection, characterized in that, include: Base plate (1); Two end clamping structures (2), each of the end clamping structures (2) is provided with a first clamping member (3), the clamping member having a limiting area for placing one end of the crankshaft, the end clamping structure (2) includes; - Slide groove (21), the slide groove (21) is provided on the base plate (1); - Slider (22), the slider (22) is slidably connected in the groove (21); - Pad (23), the pad (23) is connected to the slider (22); The second clamping member (4) is disposed on the base plate (1) and is disposed between the two pads (23). The second clamping member (4) has a snap-fit ​​space for placing the crankshaft connecting journal.

2. The crankshaft inspection fixture as described in claim 1, characterized in that: The end clamping structure (2) also includes a first screw (24); The screw is rotatably connected to the slide groove (21), the screw passes through the slider (22), and the screw cooperates with the slider (22).

3. The crankshaft inspection fixture as described in claim 1, characterized in that: The endpoint clamping structure (2) also includes several lifting components (25); One end of the lifting component (25) is connected to the pad block (23), and the other end of the lifting component (25) is connected to the first clamping component (3).

4. The crankshaft inspection fixture as described in claim 1, characterized in that: The first clamping component (3) includes a horizontal plate (31) and two clamps (32); The horizontal plate (31) is slidably connected to the pad (23), and the two clamps (32) are arranged opposite to each other and are slidably connected to the horizontal plate (31).

5. The crankshaft inspection fixture as described in claim 4, characterized in that: The first clamping member (3) also includes a second screw (33); The second screw (33) is rotatably connected to the horizontal plate (31), the second screw (33) passes through the chuck (32), and the second screw (33) cooperates with the chuck (32).

6. The crankshaft inspection fixture as described in claim 1, characterized in that: It also includes the mounting plate (5); The mounting plate (5) is connected to the base plate (1), and the mounting plate (5) is connected to the second clamping member (4).

7. The crankshaft inspection fixture as described in claim 6, characterized in that: It also includes a slot (6) and a plug (7); The slot (6) is disposed on the mounting plate (5). The length extension direction of the slot (6) is the same as the extension direction of the slide (21). The insert (7) is on the second clamping member (4). The insert (7) can be inserted into the slot (6).

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