The invention discloses a separating claw with a diagonal comb. Including open top claw claw and a base comb comb comb, two oblique tooth, relative complementary; two sides and top jaw vertices, base jaw tooth base claw teeth clamp position to the three is that the two sides and the top jaw base claw tooth apex located in the base of claw tooth clamping point between the top jaw teeth; vertex, top claw teeth two sides and the top jaw position to the three is among the top two sides of a tooth claw claw tooth is located at the top of the vertex and top claw clamping points; the smaller two acute sides and chuck the axis of rotation teeth formed by the angle is greater than the base and the top jaw claw comb tooth surface friction angle. The comb on the top jaw positioned relative to the base in the claw chuck rotary two axial direction of the workpiece by the clamping force and cutting force on the top of the reaction medium to claw claw and claw top with more closely, to enhance the bending stiffness of the top jaw, improve the accuracy of clamping, especially the batch processing precision chuck repeated clamping precision.
【技术实现步骤摘要】
本专利技术涉及机床卡盘上的工件夹持装置,具体地说是涉及一种具有斜梳齿的分离式卡爪。
技术介绍
数控机床的动力卡盘为适应不同尺寸的工件,其卡爪常采用分离爪,即基爪和顶爪。基爪与顶爪之间通过梳齿进行径向定位和传递径向夹紧力。传统梳齿的齿形是60°或 90°的等腰三角形结构,梳齿对顶爪的自由度约束限于卡盘径向上朝向和背离卡盘回转轴线的两个方向以及卡盘回转轴向朝向卡盘体的一个方向。以外圆夹持为例,夹紧力较大或夹持点位置靠近顶爪远离卡盘体的一侧时,顶爪因刚度有限而发生弯曲变形,导致顶爪和基爪的部分梳齿分离,使定位和传递夹紧力的梳齿减少,定位精度和夹持可靠性下降,同时加剧了顶爪喇叭口的形成。
技术实现思路
本专利技术的目的在于提供一种具有斜梳齿的分离式卡爪,它能够增强机床卡盘上顶爪的弯曲刚度、提高顶爪定位和夹持精度。本专利技术解决其技术问题所采用的技术方案是本专利技术包括开有梳齿的基爪和开有梳齿的顶爪,基爪梳齿面的齿形和顶爪梳齿面的齿形相对、互补并连接成一体;所述的基爪梳齿和顶爪梳齿上的齿均为非等腰三角形的斜齿, 基爪齿的顶点、基爪齿的两个边和顶爪夹持点三者的位置关系是,基爪齿 ...
【技术保护点】
1.一种具有斜梳齿的分离式卡爪,包括开有梳齿的基爪(1)和开有梳齿的顶爪(2),基爪(1)梳齿面的齿形和顶爪(2)梳齿面的齿形相对、互补并连接成一体;其特征在于:所述的基爪(1)梳齿和顶爪(2)梳齿上的齿均为非等腰三角形的斜齿,基爪齿的顶点(1a)、基爪齿的两个边(1b)和顶爪夹持点(2c)三者的位置关系是,基爪齿的顶点(1a)位于基爪齿的两个边(1b)和顶爪夹持点(2c)之间;顶爪齿的顶点(2a)、顶爪齿的两个边(2b)和顶爪夹持点(2c)三者的位置关系是顶爪齿的两个边(2b)位于顶爪齿的顶点(2a)和顶爪夹持点(2c)的之间;斜齿的两边与卡盘回转轴心所成的两个锐角中的较 ...
【技术特征摘要】
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