本次课题按照经验设计步骤并结合自己的实际了解情况对泵体零件夹具进行设计

In this project, the pump body parts fixture was designed according to the empirical design steps and combined with my own actual understanding. First, determine the dimensional accuracy and position accuracy of the processing by analyzing the subject requirements and reading the part drawings, so as to determine the reference and clamping method; secondly, select the blank material, size, manufacturing method and processing route, and then calculate the size of each process , Tolerance range, cutting amount, working hours and other parameters to fill in the process card; then, draw up the fixture positioning, clamping and tool orientation plan, select the best plan by calculating the force and analyzing the error; finally, use the software to model and analyze the fixture Draw the two-dimensional and three-dimensional assembly drawings of the fixture for the shortcomings of the size and structure. <br>The design is the processing technology and fixture design of the right part of the machine tool bracket. The parts are forgings, which have the characteristics of smaller volume and more complicated parts. Since the surface is easier to process than the hole, the surface is processed first, and then the surface is processed. Others are processed based on the surface. The fixtures for each process use special fixtures. Especially for the process of processing large-head holes, grooves and drilling small-head holes, the positioning method of two pins on one side is selected, and the manual operation is simple. In the process of clamping and drilling small head holes, select the positioning method of two pins on one side, and select the positioning method of two pins on one side in the process of manual clamping and drilling small head holes with simple operation. Only manual clamping with simple operation can ensure that it meets the requirements. <br><br><br><br><br>[Keywords] process regulations; positioning and clamping; fixture design

This subject designs the fixture of pump parts according to the experience design steps and combined with their own actual understanding. Firstly, the dimensional accuracy and position accuracy of machining are determined by analyzing the requirements of the subject and reading the part drawing, so as to determine the datum and clamping mode; Secondly, select the blank material, size, manufacturing method and processing route, and then fill in the process card by calculating the parameters such as process size, tolerance range, cutting parameters and man hour; Then, the positioning, clamping and tool guiding schemes of the fixture are drawn up, and the optimal scheme is selected by calculating the force and analyzing the error; Finally, using software modeling, the shortcomings of fixture size and structure are analyzed, and the two-dimensional and three-dimensional assembly drawings of fixture are drawn.<br>The design refers to the processing technology and fixture design of the right part of the machine tool support. The part is a forging, which has the characteristics of small volume and complex parts. Because the surface is easier to process than the hole, when formulating the process specification, the surface shall be processed first, and then the other parts shall be processed based on the surface. Among them, all process fixtures adopt special fixtures, especially for processing large head holes In the process of slot and drilling small head hole inclined hole, select the positioning mode of one side and two pins, select the positioning mode of one side and two pins in the process of simple manual clamping and drilling small head hole inclined hole, select the positioning mode of one side and two pins in the process of simple manual clamping and drilling small head hole inclined hole, and clamp it in the process of simple manual clamping and drilling small head hole inclined hole, To ensure that the requirements are met.<br>[Key words] process specification; Positioning and clamping; Fixture design<br>

In this project, the fixture of pump body parts is designed according to the experience design steps and combined with my own actual understanding. Firstly, the dimensional accuracy and position accuracy of machining are determined by analyzing the subject requirements and reading part drawings, so as to determine the benchmark and clamping mode. Secondly, select the blank material, size, manufacturing method and processing route, and then fill in the process card by calculating parameters such as size, tolerance range, cutting parameters and working hours of each process. Then, the positioning, clamping and tool guiding schemes of the fixture are drawn up, and the optimal scheme is selected by calculating the force and analyzing the error. Finally, using software modeling, the shortcomings of fixture size and structure are analyzed, and two-dimensional and three-dimensional assembly drawings of fixture are drawn. The design is the processing technology and fixture design for the right part of the machine tool bracket. The part is a forging, which has the characteristics of smaller volume and more complex parts. Because the surface is easier to process than the hole, when formulating the process regulations, the surface should be processed first, and then the others should be processed based on the surface, in which special fixtures are used for each process. Especially, for the process of processing the big head hole, groove and drilling the inclined hole of the small head hole, the positioning mode of two pins on one side is selected. In order to meet the requirements, we should choose the positioning mode of two pins on one side in the process of simple manual clamping and drilling the inclined hole of the small head hole, and choose the positioning mode of two pins on one side in the process of simple manual clamping and drilling the inclined hole of the small head hole. [Key words] process regulations; Positioning and clamping; grip design