角形轴承座的工艺和铣φ250前后大端面夹具设计【角形轴承箱】【三维SW】

0三维图(1)

Contents
content 1
Preface 2
1. Analysis 3
1.1 Part action 3
1.2 Process analysis of parts 3
第2章Process planning design 4
2.1 Determining the manufacturing form of blank 4
2.2 Datum plane selection 4
2.3 Working out the process route 4
2.4 Determination of machining allowance, process size and blank size 5
2.5 Determining cutting parameters and basic working hours 6
2.5.1 crude、Finish millingφ250 Front and rear end face 6
2.5.2 crude、Fine boring φ180H7 8
2.5.3Drilling reamingφ25 10
2.5.4 Milling slot 10mm 11
2.5.5 Drilling and expansion 6-φ13 12
第3 Fixture design for face milling 14
3.1 Workpiece degree of freedom analysis and location principle 14
3.3 Analysis of positioning error 15
3.4 Calculation of cutting force and clamping force 16
3.5 Brief description of fixture design and operation 18
Conclusion 19
Reference 20

Preface
The fixture of machine tools is now very widely used in the current metal cutting process, it can be said that basically all of the mechanical processing will be more or less applied to fixture. The fixture is mainly able to accurately determine the position of the work piece, and the work piece can be firmly fixed and clamped, so as to facilitate cutting tools to meet the needs of processing. In other words, the main function of fixture is to ensure the quality of the work piece, improve the efficiency of processing, reduce the intensity of labor, can give full play to the performance of machine tools, so fixture in the current machinery manufacturing occupies a very important position
With the great development of mechatronics, automation and artificial intelligence, the fixture used in the field of machinery has gradually evolved into a variety of forms, from the former manual fixture to the automatic assembly line fixture, and even to the present intelligent automatic fixture, the application of fixture is more and more people. With the development of industry, fixture will be improved and developed continuously to meet the needs of modern and diversified mechanical manufacturing production
From the actual development of machinery to the present, we learn the design of fixtures and mechanical manufacturing process knowledge, so that a good combination of the current mechanical manufacturing production, has a good learning effect, and can lay a certain foundation in the future development of mechanical manufacturing work, so familiar with the machine Machinery manufacturing technology and tooling and fixture design knowledge, for the future of mechanical manufacturing work has a great help, but also make their own step by step, gradually upgrade, for the motherland's mechanical manufacturing industry to contribute.

第1章Part analysis
1.1 Part action
This part is a bearing seat, bearing seat is generally installed on a machine tool, the bearing seat and the corresponding connecting holes connected with the corresponding connecting screw or connecting shaft, the center hole and the corresponding shaft bearing with each other, with the rotation of the shaft, to ensure that the center hole and the shaft have a certain concentric effect.
1.2 Process analysis of parts
Some surfaces to be machined in this bearing seat part mainly include wide grooves on the upper end face and upper end face, wide grooves on the lower right end face and the lower right end face, opposite lower end face of wide grooves on the upper side, opposite end face of wide grooves on the right side, front and rear end face of 250, and so on. The front and rear end face of 250 is thick in these surface features. The roughness requirement is Ra6.3, and the width slot 50h11 requirement of the two parts is also Ra6.3. In addition, the surface roughness requirement of the other two parts is Ra12.5, and the surface roughness unmarked is not processed.
The characteristics of the misalignment hole include the large circular hole_180H7 on the center datum, the surface roughness requirement of this hole is Ra1.6, the surface roughness requirement of 2-_25 holes on the upper wide groove and the lower right wide groove is Ra12.5, and the requirement of 6-_13 through holes on the large end face is Ra12.5.

0三维图(2)

三维文件图

轴承座零件图

轴承座铣大面夹具体

轴承座铣大面夹具装配图