角形轴承座的工艺和镗φ180孔夹具设计【角形轴承箱】【三维SW】

0三维图(1)

Contents
Contents 3
Abstract 4
Chapter 1 Part Analysis 5
1.1 Part role 5
1.2 Process Analysis of Parts 5
Chapter 2 Process Design 6
2.1 Determination of the manufacturing form of the blank 6
2.2 Datum selection 6
2.3 Formulating the route 6
2.5 Determine the cutting amount and basic working hours 8
2.5.1 Thick and fine milling front and rear end faces of φ250 8
2.5.2 coarse and fine boring φ180H7 10
2.5.3 drilling reaming φ25 12
2.5.4 Milling groove 10mm 14
2.5.5 drilling expansion 6-φ13 14
Chapter 3 Fixture Design 17
3.1 Proposal of the problem 17
3.2 Selection of positioning criteria 17
3.3 Analysis of positioning error 18
Operation List Sheet 22
Conclusion 24
References 25
Thanks 26

Abstract

The mechanical manufacturing process curriculum is designed after completing all the basic courses, professional basic courses and most of the main courses of the university. This is an in-depth and comprehensive review of the courses that students have taken before graduation design. It is also a theoretical and practical training. Therefore, the design of mechanical manufacturing technology courses is very important.
I hope that I can adapt the mechanical manufacturing process design through this course design, from which I can get exercise, and consciously analyze the problem and solve the problem, and lay a good foundation for future work.
Due to limited capacity, there are many deficiencies in the design process, so please ask the teachers to enlighten me.

Key words: process planning, design, special fixture

Chapter 1 Part Analysis

1.1 Part role
The bearing housing parts are generally the components that connect the bearings. Of course, if there are connecting bearings, there will be shaft holes, and the central shaft hole will have high precision. The center hole is connected with the corresponding shaft and bearing. The center hole of the bearing housing this time. It is connected with the bearing on the corresponding shaft. The center hole of the bearing connection needs to have a certain surface precision, and the cylindricity and other geometrical tolerance requirements must be ensured. Therefore, the bearing seat can ensure the rotation of the transmission shaft smoothly. The role.
1.2 Process Analysis of Parts
Some of the surfaces to be machined in this housing part mainly include a wide groove on the upper end surface and the upper end surface, a wide groove on the lower right side end surface and the lower right side end surface, and a lower end surface on the upper wide groove opposite side, The opposite end faces of the wide groove on the right side, the front and rear end faces of φ250, etc., the surface roughness of the front and rear end faces of φ250 in these surface features is Ra6.3, and the width of 50h11 of the two parts is also Ra6.3, and the others are The specified surface roughness requirements are Ra12.5, and the surface roughness is not indicated.
The characteristics of the hole include a large circular hole φ180H7 on the center reference, the surface roughness of the hole is required to be Ra1.6, and the surface roughness of the 2-φ25 hole on the upper wide groove and the lower right wide groove is required to be Ra12.5, on the large end face. The 6-φ13 through hole requirement is also Ra12.5.
The geometrical tolerance requires 0.12mm between the upper middle end and the lower right end. The center large round hole φ180 requires a roundness of 0.008mm, the large end surface φ250 is the reference B, and the center large round hole φ180 is the reference C. The two wide slots are relative to The B-reference has a positionality of 0.4 mm, and the front and rear large end faces have a verticality of 0.1 mm with respect to the C-reference center.

0三维图(2)

三维文件图

0三维图(3)

轴承座零件图

轴承座镗孔夹具体

轴承座镗孔夹具装配图