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CN-224209818-U - Positioning device for finish machining of forging

CN224209818UCN 224209818 UCN224209818 UCN 224209818UCN-224209818-U

Abstract

The utility model relates to a positioning device for finish machining of forgings. The pressing device comprises a supporting bottom plate for supporting the forge piece, a pressing device for pressing the forge piece and a moving device for adjusting the pressing device, wherein a plurality of groups of moving devices which are arranged in a linear array are respectively arranged at two ends of the top of the supporting bottom plate, the pressing device is arranged at the top of the moving end of each group of moving devices, and the acting end of each group of pressing devices faces the central surface of the supporting bottom plate. The positioning device for the finish machining of the forge piece in the prior art is difficult to adapt to the multidirectional stress requirement of the special-shaped forge piece, the workpiece is easy to deviate or deform, and meanwhile, the technical problems of simple buffering structure (such as a single spring) and poor multiaxial synchronism exist.

Inventors

  • QIAN HAOMIAO
  • FENG XIAOZHONG

Assignees

  • 无锡锡西模锻有限公司

Dates

Publication Date
20260508
Application Date
20250612

Claims (7)

  1. 1. The positioning device for the finish machining of the forge piece is characterized by comprising a supporting bottom plate (1) for supporting the forge piece, a pressing device (2) for pressing the forge piece and a moving device (3) for adjusting the position of the pressing device (2), wherein a plurality of groups of moving devices (3) which are arranged in a linear array are respectively arranged at two ends of the top of the supporting bottom plate (1), the pressing device (2) is arranged at the top of the moving end of each group of moving devices (3), and the acting end of each group of pressing devices (2) faces the central surface of the supporting bottom plate (1).
  2. 2. The positioning device for finishing of forge pieces according to claim 1 is characterized in that the pressing device (2) comprises a bending rod (21), a pressing block (22) used for pressing the forge pieces, a guide block (23) used for driving the pressing block (22) to lift, a buffer piece (24) used for buffering the pressing block (22), a first driving device (25) installed at the top end of the bending rod (21) and a fixing bolt (26) used for fixing the bending rod (21), the base of the bending rod (21) is fixedly installed on the moving end of the moving device (3) through the fixing bolt (26), the buffer piece (24) is arranged between the pressing block (22) and the guide block (23), and the driving end of the first driving device (25) penetrates through the bending rod (21) to be connected with the guide block (23) in a transmission mode.
  3. 3. The positioning device for finishing of forge pieces according to claim 2, wherein the moving device (3) comprises a moving block (31) sliding on the top of the supporting bottom plate (1), a screw rod (32) for driving the moving block (31) to move, bearing seats (33) arranged at two ends of the screw rod (32) and a second driving device (34) arranged on the top of the supporting bottom plate (1) in an extending mode, the moving block (31) is connected to the screw rod (32) in a threaded mode, two groups of the bearing seats (33) are arranged on the top of the supporting bottom plate (1), one end portion of the screw rod (32) is connected to an output shaft of the second driving device (34), and a base of the bending rod (21) is fixedly arranged on the moving block (31) through the fixing bolt (26).
  4. 4. A positioning device for finishing forging pieces according to claim 3, wherein the buffer member (24) comprises a spring (241) for buffering the pressing block (22), a telescopic rod (242) for limiting the spring (241) and a damping cushion block (243) arranged on the guide block (23), the spring (241) is arranged around the telescopic rod (242), the telescopic end of the telescopic rod (242) is connected with the pressing block (22), the other end of the telescopic rod (242) is connected with the damping cushion block (243), one end of the spring (241) is connected with the pressing block (22), and the other end of the spring (241) is connected with the damping cushion block (243).
  5. 5. A positioning device for finishing forgings according to claim 1, characterized in that the center of the top of the supporting base plate (1) is provided with a cross positioning line.
  6. 6. A positioning device for finishing forgings according to claim 2, characterized in that said first driving means (25) is a cylinder.
  7. 7. A positioning device for finishing forgings according to claim 3, characterized in that the second driving means (34) is a servo motor.

Description

Positioning device for finish machining of forging Technical Field The utility model relates to the field of forging finish machining devices, in particular to a positioning device for forging finish machining. Background In the forging finish machining process, accurate positioning and stable clamping of workpieces are key for ensuring machining precision. The traditional positioning device mainly adopts a single-point pressing or rigid clamp structure, and has the technical defects that firstly, the number of pressing points is limited, the positions of the pressing points are fixed, the pressing points are difficult to adapt to the multidirectional stress requirements of special-shaped forgings (such as crankshafts and gear blanks), the workpieces are easy to deviate or deform, secondly, the rigid pressing blocks directly contact the surfaces of the forgings, a buffering mechanism is lacked, machining vibration is easy to transfer to the surfaces of the workpieces to form indentations, particularly, the thin-wall or high-finish forgings are obviously damaged, thirdly, the pressing position is adjusted by relying on a manual moving locking mechanism, bolts are required to be repeatedly detached and manually calibrated, the efficiency is low, symmetry is difficult to ensure, fourthly, the positioning reference is assisted to center by an external measuring tool, the operation is complex, human errors are easy to be introduced, and fifthly, the transmission mechanism (such as a lead screw and a guide rail) is exposed to the machining environment, metal chips are easy to invade and cause motion clamping stagnation, and the positioning precision and the service life are influenced. The existing improvement scheme introduces an electric driving or elastic pressure head, but still has the problems of uneven compression force distribution, simple buffering structure (such as a single spring), poor multiaxial synchronism and the like. Disclosure of utility model The positioning device for the finish machining of the forge piece solves the technical problems that in the prior art, the positioning device for the finish machining of the forge piece is difficult to adapt to the multidirectional stress requirement of a special-shaped forge piece, the workpiece is easy to deviate or deform, and meanwhile, the buffering structure is simple (such as a single spring) and the multiaxial synchronism is poor. The technical scheme adopted by the embodiment of the application is as follows: The positioning device for the finish machining of the forgings comprises a supporting bottom plate for supporting the forgings, a pressing device for pressing the forgings and a moving device for adjusting the positions of the pressing device, wherein a plurality of groups of moving devices which are arranged in a linear array are respectively arranged at the two ends of the top of the supporting bottom plate, the pressing device is arranged at the top of each group of moving ends of the moving devices, and the acting ends of each group of pressing devices face the central surface of the supporting bottom plate. The pressing device comprises a bending rod, a pressing block used for pressing a forging piece, a guide block used for driving the pressing block to lift, a buffer piece used for buffering the pressing block, a first driving device arranged at the top end of the bending rod and a fixing bolt used for fixing the bending rod, wherein a bending rod base is fixedly arranged at the moving end of the moving device through the fixing bolt, the buffer piece is arranged between the pressing block and the guide block, and the driving end of the first driving device penetrates through the bending rod and is connected with the guide block in a transmission mode. The moving device comprises a moving block sliding on the top of a supporting bottom plate, a screw rod for driving the moving block to move, bearing seats arranged at two ends of the screw rod and a second driving device arranged on the top of the supporting bottom plate in an extending mode, wherein the moving block is connected to the screw rod in a threaded mode, two groups of bearing seats are arranged on the top of the supporting bottom plate, one end portion of the screw rod is connected to an output shaft of the second driving device, and a bending rod base is fixedly arranged on the moving block through a fixing bolt. The buffer piece comprises a spring for buffering the pressing block, a telescopic rod for limiting the spring and a damping cushion block arranged on the guide block; the spring is arranged around the telescopic rod, the telescopic end of the telescopic rod is connected with the pressing block, the other end of the telescopic rod is connected with the damping cushion block, one end of the spring is connected with the pressing block, and the other end of the spring is connected with the damping cushion block. The technical scheme is that a cross positioning line