汽车制动钳体加工工艺及装备设计+CAD图纸
关键词：制动钳；铸造工艺；加工工艺；专用刀具
A certain type of automobile brake block’s processing technology and equipment design
Abstract: In recent years, With the vehicle speed rising and traffic density increased, person has put forward higher requirements of brake systems, safer, more reliable, high-speed stability when braking is higher. Disc brake is one of the current good brake, and it has the advantage of no force, good heat dissipation, recession-proof ability. Brake caliper is the main part of disc brake, its structure is complex, high machining accuracy, strict technical conditions. This paper introduces the classification, the working principle and the function of the brake caliper body, and doing analysis and comparison based on the structural features of the brake caliper parts. Finally, to decide Casting process design schemes and machining process design. Among them, the brake caliper the choice and determination of casting technological parameters is the key, and brake caliper parts machining using CNC machine, combination fixture and special cutting tools’ machining center for processing, and according to the machining process focus on the characteristics of reasonable design of cutting tools to improve processing efficiency.
Keyword: Brake pliers; Casting process; The processing technology; Special cutting tools
目录
1绪论…1
1.1制动器的简介…1
1.2制动系统的一般工作原理1
1.3制动器的分类…2
1.4制动钳的简介…3
1.5制动钳的工作原理…3
1.6制动钳在制动器中的关键作用…4
2零件的结构特点5
2.1零件的重要结构5
2.2零件的尺寸分析6
2.2.1零件的关键尺寸及定位误差分析6
2.2.2零件的加工尺寸分析6
3铸造工艺设计…12
3.1毛坯材料的选择12
3.2模样12
3.3造型方式…12
3.4造芯13
3.5铸造工艺参数…13
3.5.1铸件最小铸出壁厚…13
3.5.2铸件最小铸出孔14
3.5.3机械加工余量15
3.5.4起模斜度…15
3.5.5收缩率15
3.5.6浇冒口的切割余量16
3.5.7分型负数…16
3.5.8铸件在砂型内的冷却时间…16
3.6确定浇注位置…16
3.7确定分型面17
3.8砂芯芯头的基本尺寸18
4机械加工工艺设计…20
4.1工艺规划…20
4.1.1规划方案一20
4.1.2规划方案二20
4.2方案的确定21
4.3基面的选择和定位…22
4.4零件的加工23
4.4.1工位1…23
4.4.2工位2…23
4.4.3工位3…25
4.4.4工位426
4.4.5工位526
4.5零件的前、后处理…27
4.5.1前处理27
4.5.2后处理27
4.6刀具选用说明及原则28
4.6.1刀具选择的原则28
4.6.2刀具的材料选择29
4.6.3新工艺——复合硬质合金…29
4.7 加工中心工步说明卡…30