Split type crankshaft and counterweight method thereof
A split-type, crankshaft technology, applied to the crankshaft, shaft, crank, etc., can solve the problems of increasing the volume of the crankshaft, the difference of the dynamic balance data of the crankshaft, and the error of the unbalance rate
Pending Publication Date: 2022-07-29
青岛德盛机械制造有限公司
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Problems solved by technology
However, the existing counterweight scheme has disadvantages: 1. Due to the influence of forging dimensional accuracy and machining errors, the dynamic balance data of each set of crankshafts will be different, and the error of unbalance rate is close to 8%.
2. In order to adjust the dynamic balance, it is easy to increase the volume of the crankshaft, which will increase the volume of the engine
Method used
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Embodiment Construction
[0033] The core of the present invention is to provide a split crankshaft and its counterweight method, which are used to adjust the counterweight of the crankshaft to meet the requirements of dynamic balance.
[0034] In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0035] Please refer to Figure 1 to Figure 3 , figure 1 A front view of a specific embodiment of the split crankshaft provided by the present invention; figure 2 It is a side view of a specific embodiment of the split crankshaft provided by the present invention; image 3 It is a flow chart of the method for counterweight provided by the present invention.
[0036] In this embodiment, the split crankshaft includes a crank and a counterweight. The crank is connected to the connecting rod assembly 5 to form a crank-link mechanism...
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The invention discloses a split type crankshaft and a counterweight method thereof, the split type crankshaft comprises a crank and a counterweight block, a mounting hole is formed in the target position of the crank, the counterweight block is fixedly arranged in the mounting hole, and the material density of the counterweight block is larger than that of the crank. According to the split type crankshaft provided by the invention, the unbalance rate is adjusted by utilizing a high-density material, and the change of the volume of the crankshaft cannot be caused, so that the volume of an engine is not changed; according to the invention, the unbalance amount of the split type crankshaft can be measured one by one, and then the size and position of the balancing weight can be calculated according to different unbalance amounts, so that each split type crankshaft can be ensured to reach an optimal balance state.
Description
technical field [0001] The invention relates to the field of crankshaft connecting rods, in particular to a split crankshaft and a counterweight method thereof. Background technique [0002] The unbalanced force generated by the high-speed crank-connecting-rod-piston mechanism directly causes the vibration, noise and unstable operation of the engine and motorcycle. Reducing the adverse effect of unbalanced force in the manufacture of connecting rod assembly and making the crank connecting rod assembly meet the requirements of dynamic balance is very important to the design and manufacture of motorcycles. [0003] In the prior art, in the manufacture of crank and connecting rod assemblies, most of them are processed, and then the data measured by the dynamic balancing machine is used to change the way of blank design. However, the existing counterweight solutions have the following disadvantages: 1. Affected by the forging dimensional accuracy and machining errors, the dynam...
Claims
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IPC IPC(8): F16C3/10F16C3/20F16C3/22
CPCF16C3/10F16C3/20F16C3/22
Inventor 曹华君王涛远崔树静
Owner 青岛德盛机械制造有限公司