当主要几何形状围绕旋转轴排列时，通常使用CNC车削. The useful review starts with the relationships the finished component must maintain.
External turning can produce straight and stepped diameters, while facing establishes end surfaces used for length control, locating, sealing, or assembly. Shoulders may locate bearings, seals, spacers, retaining components, or mating parts.
A diameter and a face can each meet their individual size requirements while their relationship still affects the final assembly. Define critical relationships through the drawing.
Turned components can include through bores, blind bores, internal shoulders, recesses, counterbores, and internal threads where geometry and tool access allow.
Include bore diameter and depth, bottom condition, thread requirements, entry condition, and the relationship between internal and external features. Where an inside diameter must remain related to an outside diameter, identify the datum structure and geometric requirement.
Grooves can serve seals, retaining rings, clips, lubrication features, or assembly functions. Threads may be internal or external and can interact with shoulders, reliefs, sealing faces, and finishing allowances.
Specify the thread requirement, 配合, relief, entry or runout condition, and any mating or gauging requirement. Define part-off faces, controlled edge breaks, chamfers, sharp-edge restrictions, 以及在影响成品零件的部位进行去毛刺.
这些类别提供了一个快速的起点. 完整的图纸仍然决定工艺流程, 支持, 加工完成, 和检验路线.
台阶直径, 轴承座, 肩部, 槽, 螺纹, 和定位面通常作为一个连接系统工作.
孔对外径关系, 壁厚, 端面, 和表面状态可以控制装配和检验.
内外径可以与肩部, 法兰, 槽, 或润滑相关特征结合.
台阶直径, chamfers, 槽, 螺纹, 通孔, 和固定特征属于完整的RFQ.
长度, 面状态, 孔径, 外径, 平行定位面, 和精加工可能协同作用.
螺纹可以与肩部, 槽, 密封面, recesses, 平面, 孔, 和次要特征结合.
一个直径可以满足其尺寸要求，而完整的旋转关系仍然无法满足装配需求.
轴承直径可以从台肩定位. 密封表面可能需要保持与孔的关系. 螺纹部分可能将配合零件对准端面.
识别控制配合的基准轴和基准面, 运动, sealing, 对齐, or assembly. 这为加工和检验计划提供了明确的优先顺序.
跳动要求应识别被控制特征及其参考基准. 尺寸, 形状, 方向, 位置, 和跳动描述不同的特性.
针对配合直径, 确定所需的配合, 间隙, 或接口条件. 说明在工艺可能影响测量状态时，受控特征是在处理前还是处理后被接受.
主要旋转几何特征强烈表明应首先评估CNC车削. 完整的特征布局, 材料, 数量, 加工完成, 支持, 和检验要求决定制造路线.
车削零件也可能需要平面, 通孔, 键槽, 铣削槽, 相交孔, 斜角特征, 或其他偏轴几何形状. 在初步报价中包含它们，以便可以一起审查完整零件.
为了更广泛的工艺选择, 比较数控加工工艺.
长而细的部分, 薄壁, 延伸孔, 以及主要直径过渡可能使零件对支撑, 夹紧, 材料去除, 和测量状态更为敏感.
识别控制功能的特征并说明重要尺寸是在自由状态, 夹具状态, 或组装状态下获取的. 支撑和顺序评估基于实际材料和几何形状.
偏轴特征可能影响加工顺序, 转移, 毛刺形成, 搬运, 及检验通道. Show their position and orientation relative to the primary turned datums.
Identify burr restrictions, protected handling surfaces, critical edge conditions, and features that must remain unchanged. Approved design changes belong in the controlled drawing or model.
Material grade and condition affect chip control, support and dimensional stability. Surface roughness, appearance and treatment are separate requirements.
Commonly specified metals and engineering plastics can be reviewed for turned parts. Include grade, supplied condition, certification needs and substitution limits.
Identify bearing seats, sliding diameters, 密封面, threads and datum faces. Specify treatment, masking and whether dimensions apply before or after heat treatment, plating or other finishing.
Inspection planning follows the functional relationships that drive the machining plan.
GPT Precision is ISO 9001:2015 认证.
Diameter size alone does not establish runout or the relationship between a bore, shoulder and datum axis. Plan checks around the controlled features and the drawing’s datum structure.
Methods can include CMM, 光学测量, 尺寸量具, 检验夹具, 以及装配和功能量具. Select the method for the characteristic being accepted.
Identify required dimensional reports, first article inspection, CPK, PPAP, SPC, lot control or sampling records in the RFQ. Scope and applicability are agreed during quotation.
审核质量要求A complete RFQ makes manufacturing scope and acceptance requirements easier to review and compare.
Provide the current 2D drawing and 3D model with matching revision identifiers.
Include grade, 状态, certification, substitution limits, 数量, recurring volume, 以及目标时间表发送给我们.
Identify the datum axis, datum faces, critical diameters, 孔径, 肩部, 槽, 螺纹, runout, and important surfaces.
Show cross-holes, 平面, 键槽, 槽, intersecting features, burr restrictions, and protected handling surfaces.
Specify treatment, coating, 遮蔽, roughness, cosmetic requirements, and when controlled dimensions apply.
Identify required inspection methods, 报告范围, sampling requirements, and final acceptance conditions.
Include assembly or mating-part information when it clarifies fit, 运动, sealing, 对齐, or another critical interface.
Maximum size, production capacity, and lead time are evaluated from the drawing, 材料, 工艺, 工件固定, equipment fit, 数量, 和项目需求.
编号. The finished feature layout determines suitability. Significant flats, cross-holes or other off-axis geometry may require secondary milling or another route.
编号. Size and runout describe different characteristics. Identify the controlled surface, datum axis and acceptance requirement on the drawing; evaluate the complete relationship.
Swiss turning can be considered for suitable small or slender rotational components. Geometry, 材料, 支持, secondary features and inspection requirements determine suitability.
Show flats, 通孔, slots and keyways relative to the primary turned datums. Include burr restrictions and protected surfaces so transfers and final inspection cover the complete part.
发送带材料的当前图纸和3D模型, 数量, 时间表, 关键特征, 基准点, 加工完成, 以及检验标准.
