Process design method for ensuring direction/position/runout precision of machine parts
A technology of mechanical parts and process design, applied in the field of process design to ensure the direction/position/runout accuracy of mechanical parts, can solve problems such as high number of technicians and difficulties in product debugging, and achieve the effect of improving work quality and product design quality
Active Publication Date: 2019-02-15
尹开甲 +1
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is: the existing machining process is designed according to the experience of the craftsman, the requirements for the craftsman are relatively high, and the product debugging is difficult. Process design method of part direction / position / runout accuracy
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[0022] like Figure 1-Figure 4 as shown, figure 1 It shows the new and old process design process, and mainly expresses the new process design process. The old craft incorporates the programs of the new craft shown in the large grid into one - design the craft empirically. However, the new process really needs to draw the geometric error chain diagram of the process after the process draft design is completed, and then analyze whether there is a reference conversion. If it occurs, it should be eliminated as much as possible to improve the quality of the processed parts; deal with. If it cannot be eliminated, the chain type should be distinguished: two cases of reference constant chain and reference gradual chain (multi-ring chains are also calculated according to these two cases). In view of this situation, it is necessary to select the corresponding calculation formula for calculation. If the calculation is troublesome, the graphic calculation method can be used to complet...
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The invention belongs to the field of machining process design of mechanical parts, in particular to a process design method for ensuring the direction / position / runout precision of mechanical parts. The invention needs to draw a geometrical error chain diagram of the working procedure after the process draft design is completed, and then analyzes whether the benchmark conversion occurs, and if thebenchmark conversion occurs, the benchmark conversion should be eliminated as far as possible to improve the quality of the processed part. If it can be eliminated, the benchmark conversion process will not occur after elimination. If it cannot be eliminated, the chain types shall be distinguished as a reference invariant chain and a reference progressive chain (multi-loop chain shall also be calculated according to these two cases). In view of this situation, it is necessary to select the corresponding calculation formula to complete the design process tasks. The calculation of the selecte formula is very troublesome and difficult to use in production, so that the invention also provides a graphic calculation method. For the first time, the present invention places the parts in a coordinate system and discusses them with the mathematical expressions of each element.
Description
technical field [0001] The invention belongs to the field of machining process design of mechanical parts, and in particular relates to a process design method for ensuring the direction / position / jump accuracy of mechanical parts. Background technique [0002] When the national standard "Shape and Position Tolerance" was released in 1974, the name "Shape Tolerance" was used for shape, direction, position, and runout requirements. The latest version of the national standard refers to the size, shape, direction, position, runout, and roughness requirements of mechanical products as "geometric tolerances". Among them, the shape and roughness are mainly the quality status of a single element, such as the flatness of a plane. Dimensional accuracy mainly describes the distance between two features. It reflects the position accuracy requirements of two elements in translational degrees of freedom; orientation tolerance, position tolerance, and runout tolerance, typically such as ...
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Login to View More IPC IPC(8): G06F17/50
CPCG06F30/00G06F2119/18
Inventor 尹开甲尹飞凰邢尹超凡
Owner 尹开甲