公开(公告)号：US3835743A

公开(公告)日：1974-09-17

申请号：US36752373

申请日：1973-06-06

Applicant: WARNER SWASEY CO

Inventor： TAYLOR V ,  JOHNSON R ,  FAISON R ,  CHOATE W ,  BANACHOWSKI S

IPC: B26D7/02 ,  B21D28/36 ,  B21D43/00 ,  B21D43/10

CPC classification number: B21D43/003 ,  Y10T83/2172 ,  Y10T83/4632 ,  Y10T83/6563 ,  Y10T83/7573 ,  Y10T83/8752

Abstract: An improved punch press workholder has a relatively high flexural rigidity in the X and Y directions and a relatively low flexural rigidity in the Z direction. The high flexural rigidity of the workholder in the X and Y directions enables it to hold a work sheet accurately in place during punching operations. The low flexural rigidity in the Z direction enables the work sheet to assume a proper position relative to a die under the influence of forces applied to the work sheet by a punch. The workholder includes a gripper having an upper or movable pivot arm which is pivotally connected with a lower or fixed pivot arm. A resiliently yieldable connection is integrally formed with the fixed pivot arm and connects the fixed pivot arm with a rigid base. The resiliently yieldable connection has a generally rectangular cross-sectional configuration with a small dimension measured in a direction parallel to the Z axis and a relatively large dimension measured in a direction parallel to the X axis so that the yieldable connection has a high flexural rigidity in the X direction and a low flexural rigidity in the Z direction.

Abstract translation: 改进的冲压加压支架在X和Y方向上具有相对较高的抗弯刚度，并且在Z方向具有相对低的弯曲刚性。 夹持器在X和Y方向上的高抗弯刚度使其能够在冲压操作期间将工作片准确地保持在适当的位置。 在Z方向上的低弯曲刚度使得工件片能够在由冲头施加到工作片的力的影响下相对于模具呈现适当的位置。 夹持器包括具有上部或可动枢转臂的夹持器，其可枢转地与下部或固定的枢转臂连接。 弹性屈服连接与固定枢转臂一体地形成，并将固定的枢转臂与刚性基座连接。 弹性屈服连接具有大致矩形的横截面形状，其尺寸在平行于Z轴的方向上测量小尺寸，并且在平行于X轴的方向上测量的相对较大的尺寸，使得可屈服连接具有高抗弯刚度 X方向和Z方向的低弯曲刚度。