Positioning device for forge piece finish machining

Abstract

The utility model relates to a positioning device for forge piece finish machining. Comprising a supporting bottom plate used for supporting the forge piece, a pressing device used for pressing the forge piece and a moving device used for adjusting the pressing device. The two ends of the top of the supporting bottom plate are each provided with a plurality of moving devices arranged in a linear array. A pressing device is mounted at the top of the moving end of each group of moving device; the acting end of each pressing device faces the center face of the supporting bottom plate. The positioning device solves the technical problems that in the prior art, a positioning device for forge piece finish machining is difficult to adapt to the multi-direction stress requirement of special-shaped forge pieces, deviation or deformation of workpieces is easily caused, meanwhile, a buffering structure (such as a single spring) is simple, and multi-axis synchronism is poor.

Description

Technical Field

[0001] This utility model relates to the field of forging precision machining equipment, and in particular to a positioning device for forging precision machining. Background Technology

[0002] In the precision machining of forgings, accurate positioning and stable clamping of the workpiece are crucial to ensuring machining accuracy. Traditional positioning devices often employ single-point clamping or rigid fixture structures, which have the following technical drawbacks: First, the number of clamping points is limited and their positions are fixed, making it difficult to adapt to the multi-directional force requirements of irregularly shaped forgings (such as crankshafts and gear blanks), easily leading to workpiece displacement or deformation. Second, the rigid clamping block directly contacts the forging surface, lacking a buffering mechanism, and machining vibrations are easily transmitted to the workpiece surface, forming indentations, especially causing significant damage to thin-walled or high-gloss forgings. Third, adjusting the clamping position relies on manually moving the locking mechanism, requiring repeated bolt disassembly and manual calibration, which is inefficient and makes it difficult to ensure symmetry. Fourth, the positioning datum relies on external measuring tools for centering, which is complex to operate and prone to introducing human error. Fifth, the transmission mechanism (such as lead screws and guide rails) is exposed to the machining environment, and the intrusion of metal debris can easily cause movement jamming, affecting positioning accuracy and service life. Although existing improvement solutions introduce electric drive or elastic pressure head, they still have problems such as uneven distribution of clamping force, simple buffer structure (such as a single spring), and poor multi-axis synchronization. Utility Model Content

[0003] This application provides a positioning device for finishing forgings, which solves the problems of existing positioning devices for finishing forgings being unable to adapt to the multi-directional force requirements of irregular forgings, easily leading to workpiece displacement or deformation, and having simple buffer structures (such as a single spring) and poor multi-axis synchronization.

[0004] The technical solution adopted in the embodiments of this application is as follows:

[0005] A positioning device for finishing forgings includes a support base plate for supporting the forging, a clamping device for pressing the forging, and a moving device for adjusting the position of the clamping device; several sets of the moving devices are arranged in a linear array at both ends of the top of the support base plate; the clamping device is installed on the top of the moving end of each set of the moving devices; the working end of each set of the clamping devices faces the center surface of the support base plate.

[0006] A further technical solution is as follows: the clamping device includes a bending rod, a pressure block for clamping the forging, a guide block for driving the pressure block to rise and fall, a buffer for buffering the pressure block, a first driving device installed at the top of the bending rod, and a fixing bolt for fixing the bending rod; the base of the bending rod is fixedly installed on the moving end of the moving device by the fixing bolt; the buffer is provided between the pressure block and the guide block; the driving end of the first driving device passes through the bending rod and is connected to the guide block for transmission.

[0007] A further technical solution is as follows: the moving device includes a moving block that slides on the top of the support base plate, a lead screw for driving the moving block to move, bearing seats disposed at both ends of the lead screw, and a second driving device installed on the outer edge of the top of the support base plate; the moving block is threadedly connected to the lead screw; both sets of bearing seats are installed on the top of the support base plate; one end of the lead screw is connected to the output shaft of the second driving device; the bending rod base is fixedly installed on the moving block by the fixing bolt.

[0008] A further technical solution is as follows: the buffer includes a spring for buffering the pressure block, a telescopic rod for limiting the spring, and a damping pad block disposed on the guide block; the spring is disposed around the telescopic rod; the telescopic end of the telescopic rod is connected to the pressure block; the other end of the telescopic rod is connected to the damping pad block; one end of the spring is connected to the pressure block; and the other end of the spring is connected to the damping pad block.

[0009] A further technical solution is that a cross positioning line is provided at the center of the top of the supporting base plate.

[0010] A further technical solution is: the first drive device cylinder.

[0011] A further technical solution is that the second driving device is a servo motor.

[0012] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0013] 1. This forging precision machining positioning device, featuring a support base plate, clamping device, and moving mechanism, achieves precise synchronous adjustment of multiple clamping points through the cooperation of the linear array of moving mechanisms at both ends of the support base plate and the servo motor-driven lead screw, solving the problem of asymmetrical clamping of irregularly shaped forgings. The clamping device's buffer uses a composite structure of springs and damping pads, combined with the limiting function of the telescopic rod, effectively attenuating machining vibrations and preventing rigid impact damage to the workpiece surface. The synergistic effect of the cross positioning line and the high-precision control of the servo motor significantly shortens centering and clamping time. The enclosed transmission design of the lead screw and moving block reduces chip intrusion and extends the device's lifespan. The combination of the bending rod and fixing bolts allows for fine adjustment of the clamping device angle, adapting to complex forging contours. This device combines the advantages of multi-directional flexible clamping, efficient vibration reduction, and high-precision positioning, and can be widely used in the precision machining of high-value-added forgings in aerospace, automotive molds, and other fields, improving processing efficiency and product qualification rate. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of a positioning device for precision machining of forgings according to an embodiment of this utility model.

[0015] Figure 2 This is a partial structural schematic diagram illustrating the pressing device in an embodiment of this utility model.

[0016] Figure 3 This is a partial structural diagram illustrating the mobile device in an embodiment of this utility model.

[0017] Figure 4 This is a partial structural diagram illustrating the buffer component in an embodiment of this utility model.

[0018] In the diagram: 1. Support base plate; 2. Clamping device; 3. Moving device; 21. Bending rod; 22. Pressure block; 23. Guide block; 24. Buffer; 241. Spring; 242. Telescopic rod; 243. Damping pad; 25. First drive device; 26. Fixing bolt; 31. Moving block; 32. Lead screw; 33. Bearing seat; 34. Second drive device. Detailed Implementation

[0019] This application provides a positioning device for finishing forgings, which solves the problems of existing positioning devices for finishing forgings being unable to adapt to the multi-directional force requirements of irregular forgings, easily leading to workpiece displacement or deformation, and having simple buffer structures (such as a single spring) and poor multi-axis synchronization.

[0020] The technical solution in this application is to solve the above problems, and the overall approach is as follows:

[0021] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0022] A positioning device for finishing forgings, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it includes a support base plate 1 for supporting the forging, a clamping device 2 for pressing the forging, and a moving device 3 for adjusting the position of the clamping device 2; several sets of moving devices 3 arranged in a straight array are respectively provided at both ends of the top of the support base plate 1; a clamping device 2 is installed on the top of the moving end of each set of moving devices 3; the working end of each set of clamping devices 2 faces the center surface of the support base plate 1.

[0023] The clamping device 2 includes a bending rod 21, a pressure block 22 for clamping the forging, a guide block 23 for driving the pressure block 22 to rise and fall, a buffer 24 for buffering the pressure block 22, a first drive device 25 installed at the top of the bending rod 21, and a fixing bolt 26 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 by the fixing bolt 26; a buffer 24 is provided between the pressure block 22 and the guide block 23; the driving end of the first drive device 25 passes through the bending rod 21 and is connected to the guide block 23 for transmission.

[0024] The moving device 3 includes a moving block 31 that slides on the top of the support base plate 1, a lead screw 32 for moving the moving block 31, bearing seats 33 at both ends of the lead screw 32, and a second drive device 34 installed on the outer edge of the top of the support base plate 1; the moving block 31 is threadedly connected to the lead screw 32; both sets of bearing seats 33 are installed on the top of the support base plate 1; one end of the lead screw 32 is connected to the output shaft of the second drive device 34; the base of the bent rod 21 is fixedly installed on the moving block 31 by fixing bolts 26.

[0025] The buffer 24 includes a spring 241 for the buffer block 22, a telescopic rod 242 for limiting the spring 241, and a damping pad 243 disposed on the guide block 23; the spring 241 is disposed around the telescopic rod 242; the telescopic end of the telescopic rod 242 is connected to the block 22; the other end of the telescopic rod 242 is connected to the damping pad 243; one end of the spring 241 is connected to the block 22; and the other end of the spring 241 is connected to the damping pad 243.

[0026] A cross-shaped positioning line is set at the center of the top of the support base plate 1.

[0027] The first drive unit is a 25-cylinder unit.

[0028] The second drive unit 34 is a servo motor.

[0029] This forging precision machining positioning device includes a support base plate 1, with multiple sets of linearly arranged moving devices 3 symmetrically arranged at both ends of its top. Each set of moving devices 3 includes a moving block 31, a lead screw 32, a bearing seat 33, and a second drive device 34 (servo motor). The lead screw 32 is fixed to the support base plate 1 via the bearing seat 33. The moving block 31 is threadedly connected to the lead screw 32 and is driven by the servo motor to move along the lead screw axis. A clamping device 2 is installed on the top of the moving block 31 via fixing bolts 26. The clamping device 2 consists of a bending rod 21, a pressure block 22, a guide block 23, a buffer 24, and a first drive device 25 (cylinder): the cylinder drives the guide block 23 to rise and fall, and the pressure block 22 is connected to the guide block 23 via the buffer 24 (including a spring 241, a telescopic rod 242, and a damping pad 243). The spring 241 is sleeved on the outside of the telescopic rod 242, and its two ends are fixed to the pressure block 22 and the damping pad 243, respectively. The support base plate 1 has a cross positioning line engraved in the center, and all the pressure blocks 22 of the clamping devices 2 face the center surface, forming a symmetrical clamping structure.

[0030] Operating procedures

[0031] Step 1: Place the forging in the center of the support base plate 1 and align it with the cross positioning line to complete the initial positioning;

[0032] Step 2: Start the second drive device 34 (servo motor), drive the lead screw 32 to rotate, and drive the moving block 31 and the pressing device 2 to move in a straight line to the preset pressing position;

[0033] Step 3: Start the first drive device 25 (cylinder), push the guide block 23 down, and the pressure block 22 is evenly pressed against the surface of the forging after being buffered by the spring 241 of the buffer 24 and the damping pad 243.

[0034] Step 4: During the processing, the telescopic rod 242 restricts the excessive displacement of the pressure block 22, and the damping pad 243 absorbs high-frequency vibration;

[0035] Step 5: After processing is completed, the cylinder resets and raises the pressure block 22, the servo motor drives the moving block 31 to retract, and the forging is removed.

[0036] Beneficial effects

[0037] By employing a support base plate 1, a clamping device 2, and a moving device 3, this forging precision machining positioning device achieves precise synchronous adjustment of multiple clamping points through the cooperation of the moving devices 3, a linear array at both ends of the support base plate 1, and the servo motor-driven lead screw 32, thus solving the problem of asymmetrical clamping of irregularly shaped forgings. The buffer 24 of the clamping device 2 adopts a composite structure of spring 241 and damping pad 243, combined with the limiting function of the telescopic rod 242, effectively attenuating machining vibration and avoiding rigid impact damage to the workpiece surface. The synergistic effect of the cross positioning line and the high-precision control of the servo motor significantly shortens the centering and clamping time. The enclosed transmission design of the lead screw 32 and the moving block 31 reduces chip intrusion and extends the device's lifespan. The combination of the bending rod 21 and the fixing bolt 26 allows for fine adjustment of the angle of the clamping device 2, adapting to complex forging contours. This device combines the advantages of multi-directional flexible clamping, efficient vibration reduction, and high-precision positioning, and can be widely used in the precision machining of high-value-added forgings in aerospace, automotive molds, and other fields, improving processing efficiency and product qualification rate.

[0038] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0039] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A positioning device for precision machining of forgings, characterized in that, It includes a support base plate (1) for supporting the forging, a clamping device (2) for clamping the forging, and a moving device (3) for adjusting the position of the clamping device (2); several sets of the moving devices (3) arranged in a straight array are respectively provided at both ends of the top of the support base plate (1); the clamping device (2) is installed on the top of the moving end of each set of the moving devices (3); the working end of each set of the clamping devices (2) faces the center surface of the support base plate (1).

2. The positioning device for finishing forgings as described in claim 1, characterized in that, The clamping device (2) includes a bending rod (21), a pressure block (22) for clamping the forging, a guide block (23) for driving the pressure block (22) to rise and fall, a buffer (24) for buffering the pressure block (22), a first driving device (25) installed at the top of the bending rod (21), and a fixing bolt (26) 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) by the fixing bolt (26); the buffer (24) is provided between the pressure block (22) and the guide block (23); the driving end of the first driving device (25) passes through the bending rod (21) and is connected to the guide block (23) for transmission.

3. The positioning device for finishing forgings as described in claim 2, characterized in that, The moving device (3) includes a moving block (31) that slides on the top of the support base plate (1), a lead screw (32) for moving the moving block (31), bearing seats (33) provided at both ends of the lead screw (32), and a second driving device (34) installed on the outer edge of the top of the support base plate (1); the moving block (31) is threadedly connected to the lead screw (32); both sets of bearing seats (33) are installed on the top of the support base plate (1); one end of the lead screw (32) is connected to the output shaft of the second driving device (34); the base of the bent rod (21) is fixedly installed on the moving block (31) by the fixing bolt (26).

4. The positioning device for finishing forgings as described in claim 3, characterized in that, The buffer (24) includes a spring (241) for buffering the pressure block (22), a telescopic rod (242) for limiting the spring (241), and a damping pad (243) disposed on the guide block (23); the spring (241) is disposed around the telescopic rod (242); the telescopic end of the telescopic rod (242) is connected to the pressure block (22); the other end of the telescopic rod (242) is connected to the damping pad (243); one end of the spring (241) is connected to the pressure block (22); the other end of the spring (241) is connected to the damping pad (243).

5. A positioning device for finishing forgings as described in claim 1, characterized in that, A cross positioning line is provided at the top center of the support base plate (1).

6. A positioning device for finishing forgings as described in claim 2, characterized in that, The first drive unit (25) cylinder.

7. A positioning device for finishing forgings as described in claim 3, characterized in that, The second drive device (34) is a servo motor.

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