Crankshaft static balance measuring instrument

Abstract

A crankshaft static balance measuring instrument belongs to the technical field of measuring tools. The upper end of the bottom plate is in sliding limiting connection with the two measuring supports through a sliding mechanism, each measuring support is provided with a group of measuring devices, the two groups of measuring devices are symmetrically arranged, each group of measuring devices comprises two measuring devices which are arranged in parallel, and each measuring device comprises a roller measuring disc, a fixed cover, a rotating shaft and a nut; a roller measuring disc and a fixing cover are sleeved outside the rotating shaft, the roller measuring disc is rotatably connected with the rotating shaft, the roller measuring disc is connected with the fixing cover, and the rotating shaft is fixedly connected with the measuring support. According to the utility model, the integrated multi-model crankshaft measurement capability is realized through the sliding mechanism, and the flexibility of crankshaft measurement is improved. The device is reliable in structure and simple and convenient to operate, reduces equipment cost and maintenance difficulty, can quickly respond to crankshaft gravity center shift, provides timely coarse adjustment basis for crankshaft processing, improves measurement efficiency and accuracy, effectively shortens adjustment and test time, and reduces production cost.

Description

Technical Field

[0001] This utility model relates to a crankshaft static balance measuring instrument, belonging to the field of measuring tool technology. Background Technology

[0002] Ensuring crankshaft quality is paramount during the manufacturing process. Static balance is one of the key indicators of crankshaft quality. Therefore, on the crankshaft production line, operators need to periodically measure the static balance of the work-in-process and make appropriate adjustments based on the measurement results to ensure that the final product meets quality standards.

[0003] However, with the development of modern industrial production, the production demands of crankshaft production lines are becoming increasingly diversified, requiring the production of various types of crankshafts to meet the needs of different customers. This places higher demands on crankshaft static balancing measuring instruments. Traditional crankshaft static balancing measuring instruments are often designed to measure only a specific type of crankshaft, lacking flexibility and unable to adapt to the needs of measuring multiple crankshafts. Furthermore, existing measuring instruments also have certain shortcomings in measurement accuracy. Low measurement accuracy may lead to misjudgments of the crankshaft's static balance state, thereby affecting subsequent product adjustments and quality control.

[0004] Therefore, designing a crankshaft static balance measuring instrument that can combine multiple crankshaft measurement capabilities with high-precision measurement performance has become an urgent technical problem to be solved in the current crankshaft production process. Utility Model Content

[0005] To address the problems existing in the background technology, this utility model provides a crankshaft static balance measuring instrument.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a crankshaft static balance measuring instrument, comprising a measuring bracket, a base plate, a sliding mechanism, and measuring instruments; the upper end of the base plate is slidably limited to two measuring brackets through the sliding mechanism; each measuring bracket is provided with a set of measuring instruments, the two sets of measuring instruments are symmetrically arranged, each set of measuring instruments consists of two measuring instruments arranged side by side, each measuring instrument includes a roller measuring disc, a fixed cover, a rotating shaft, and a nut; the outer side of the rotating shaft is fitted with a roller measuring disc and a fixed cover, the roller measuring disc is rotatably connected to the rotating shaft through a bearing, the end face of the roller measuring disc is fixedly connected to the fixed cover, and the rotating shaft is fixedly connected to the corresponding measuring bracket through a corresponding nut.

[0007] A shim is provided between the rotating shaft and the roller measuring plate.

[0008] A washer is provided between the nut and the corresponding measuring bracket.

[0009] The sliding mechanism includes a linear rail, a slider, and clamping bolts; the upper surface of the base plate is fixed with a linear rail, and the two ends of the linear rail are slidably connected to the corresponding sliders respectively. Each slider is limited and fixed to the linear rail by the clamping bolts on it, and the two sliders are fixedly connected to the corresponding measuring brackets respectively.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This invention integrates the measurement capabilities of multiple crankshaft models through a sliding mechanism, enhancing the flexibility of crankshaft measurement. It features a reliable structure, simple operation, reduced equipment costs and maintenance difficulty, and the ability to quickly respond to crankshaft center of gravity shifts, providing timely coarse adjustment data for crankshaft machining. This improves measurement efficiency and accuracy, effectively reduces adjustment and testing time, and lowers production costs. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the measuring instrument. Detailed Implementation

[0014] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0015] A crankshaft static balance measuring instrument includes a measuring bracket 3, a base plate 13, a sliding mechanism, and measuring instruments. The upper end of the base plate 13 is slidably limited to two measuring brackets 3 via the sliding mechanism. Each measuring bracket 3 is provided with a set of measuring instruments, and the two sets of measuring instruments are symmetrically arranged. Each set of measuring instruments consists of two measuring instruments arranged side by side. Each measuring instrument includes a roller measuring disk 6, a fixed cover 7, a rotating shaft 11, and a nut 12. The roller measuring disk 6 and the fixed cover 7 are fitted on the outer side of the rotating shaft 11. The roller measuring disk 6 is rotatably connected to the rotating shaft 11 via a bearing 5. The end face of the roller measuring disk 6 is fixedly connected to the fixed cover 7 by bolts. Specifically, after the roller measuring disk 6 is heated, the bearing 5 is placed in the groove of the roller measuring disk 6. The inner ring of the bearing 5 is connected to the outer wall of the rotating shaft 11, and the outer ring of the bearing 5 is connected to the inner wall of the groove of the roller measuring disk 6. The outer end face of the bearing 5 is fitted to the fixed cover 7. The rotating shaft 11 is fixedly connected to the corresponding measuring bracket 3 via the corresponding nut 12.

[0016] A shim 8 is provided between the rotating shaft 11 and the roller measuring plate 6.

[0017] A washer 9 is provided between the nut 12 and the corresponding measuring bracket 3.

[0018] The sliding mechanism includes a linear guide 1, a slider 2, and clamping bolts 4. The linear guide 1 is fixed to the upper surface of the base plate 13 by bolts. The two ends of the linear guide 1 are slidably connected to the corresponding sliders 2, and both sliders 2 are kept in a safe position. Each slider 2 is limited and fixed to the linear guide 1 by clamping bolts 4. The two sliders 2 are fixedly connected to the corresponding measuring brackets 3 by bolts.

[0019] The method of using this utility model is as follows:

[0020] S1: Measure the distance to the installation position of the crankshaft to be measured;

[0021] S2: Adjust the two sliders 2 to the corresponding positions, and then tighten the clamping bolts 4 to position the two sliders 2 respectively;

[0022] S3: Place the crankshaft to be measured on the two sets of measuring instruments of this utility model according to the measurement requirements;

[0023] S4: Manually rotate the crankshaft to be measured half a turn at a light speed of about 0.5 revolutions per second, then release the crankshaft to be measured and let it rotate naturally;

[0024] S5: Observe the rotation state of the crankshaft to be measured to determine the position of the crankshaft's center of gravity:

[0025] If the crankshaft to be measured stops after rotating in the direction of the aforementioned driving force for a certain period of time without any oscillation or with almost no oscillation, it indicates that the center of gravity and the central axis of the crankshaft to be measured coincide, which means that it is in a balanced state.

[0026] If the crankshaft to be measured rotates in a relatively fast periodic oscillation mode, the center of gravity of the crankshaft to be measured will deviate significantly. After the crankshaft to be measured stops rotating, the center of gravity will be located directly below the central axis.

[0027] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of the equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A crankshaft static balancing measuring instrument, characterized in that: The device includes a measuring bracket (3), a base plate (13), a sliding mechanism, and a measuring device. The upper end of the base plate (13) is connected to the two measuring brackets (3) by sliding limit through the sliding mechanism. Each measuring bracket (3) is provided with a set of measuring devices. The two sets of measuring devices are symmetrically arranged. Each set of measuring devices consists of two measuring devices arranged side by side. Each measuring device includes a roller measuring disk (6), a fixed cover (7), a rotating shaft (11), and a nut (12). The roller measuring disk (6) and the fixed cover (7) are fitted on the outer side of the rotating shaft (11). The roller measuring disk (6) is rotatably connected to the rotating shaft (11) through a bearing (5). The end face of the roller measuring disk (6) is fixedly connected to the fixed cover (7). The rotating shaft (11) is fixedly connected to the corresponding measuring bracket (3) through the corresponding nut (12).

2. The crankshaft static balancing measuring instrument according to claim 1, characterized in that: A gasket (8) is provided between the rotating shaft (11) and the roller measuring plate (6).

3. The crankshaft static balancing measuring instrument according to claim 2, characterized in that: A washer (9) is provided between the nut (12) and the corresponding measuring bracket (3).

4. A crankshaft static balancing measuring instrument according to claim 3, characterized in that: The sliding mechanism includes a linear guide (1), a slider (2), and a clamping bolt (4); the upper surface of the base plate (13) is fixed with a linear guide (1), and the two ends of the linear guide (1) are slidably connected to the corresponding sliders (2). Each slider (2) is limited and fixed to the linear guide (1) by the clamping bolt (4) on it. The two sliders (2) are fixedly connected to the corresponding measuring brackets (3).

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