Calibration mechanism of punching die tool machine

Abstract

The utility model belongs to the technical field of die calibration tools, and particularly relates to a punching die tool machine calibration mechanism which comprises an alloy straight pipe, the middle of the front face of the alloy straight pipe protrudes outwards in a triangular mode, the back face of the alloy straight pipe is sequentially provided with an abutting bolt and a key hole from top to bottom, and one end of the abutting bolt penetrates through the upper edge of the alloy straight pipe in a threaded mode. A plug gauge is axially inserted into a lower opening of the alloy straight pipe, a push handle is fixed to the upper edge of the plug gauge, one end of the push handle extends out of the alloy straight pipe along a key hole, an oil absorption sponge is fixed to the lower edge of the alloy straight pipe, the plug gauge is annularly sleeved with the oil absorption sponge, and the oil absorption sponge is sleeved with an annular rubber band. The upper edge of the alloy straight pipe is communicated and fixed with an internal thread pipe matched with the abutting bolt, and a reinforcing plate fixedly connected with the internal thread pipe is integrally installed on the outer side of the alloy straight pipe. The straight guiding of the alloy straight pipe and the plug gauge is utilized, the punch and the upper through hole can be aligned and calibrated at a time, and the punching die cannot be extruded and damaged in the whole calibration process.

Description

Technical Field

[0001] The utility model belongs to the technical field of mold calibration tools, and specifically relates to a calibration mechanism of a punching mold tooling machine. Background Art

[0002] Punching technology uses a die and a punch to quickly shear and shape alloy workpieces under the action of a hydraulic system. Punching holes in alloy workpieces can be divided into round holes and square holes according to the shape of the holes, as follows:

[0003] First, when punching a square hole, if a punch is used to punch a right-angle bend, the matching accuracy of the punch and the through hole is particularly important; if there is an abnormal sound when the punch is punched, or there are obvious burrs on the right-angle mouth of the square tube, the mold needs to be calibrated in time;

[0004] Second, when punching a round hole, if a tool is used to support a special-shaped alloy workpiece and placed on a punching die tooling machine, the punching position is exposed under the round punch.

[0005] When calibrating the punching die, the punch is slowly lowered to align the through hole of the die. The misaligned position of the two is prone to extrusion and deformation. Instead, a ruler or steel ruler is used to stick to the punch to calibrate the edge of the through hole. The punch is calibrated on each side multiple times, and it cannot be calibrated in place at one time. For this reason, we propose a calibration mechanism for the punching die tooling machine. Utility Model Content

[0006] The utility model aims to provide a calibration mechanism for a punching and shearing die fixture, which utilizes an alloy straight tube and a plug gauge for straight guidance, and can calibrate the punch head and the upper through hole at one time, and the punching and shearing die will not be squeezed and damaged during the whole calibration process.

[0007] The technical solutions adopted in this utility are as follows:

[0008] A calibration mechanism for a punching die tooling machine comprises an alloy straight tube, the middle of the front side of the alloy straight tube is triangularly protruding outward, a clamping bolt and a key hole are arranged in sequence from top to bottom on the back side of the alloy straight tube, one end of the clamping bolt is threadedly inserted into the upper edge of the alloy straight tube, a plug gauge is inserted axially into the lower opening of the alloy straight tube, the upper edge of the plug gauge is fixed by a push handle, one end of the push handle extends out of the alloy straight tube along the key hole, when calibrating, first release the locking state of the punching die, lower the punch head close to the punching position, then cover the punch head with the upper opening of the alloy straight tube, and screw the clamping bolt into the alloy straight tube in the forward direction until it is pressed against the punch head, and friction is used to calibrate the punch head. The function is to lock the alloy straight tube. At the same time, the freely falling part of the plug gauge is exposed from the lower opening of the alloy straight tube and falls onto the upper surface of the punching die. The punching die can be moved by hand so that the upper through hole is opposite to the plug gauge. The plug gauge can continue to fall along the upper through hole and drive the push handle to descend along the key hole until the push handle is against the lower surface of the key hole for limiting. By utilizing the straight guide of the alloy straight tube and the plug gauge, the punch can be calibrated against the upper through hole at one time. After the calibration is completed, the punching die is locked and the push handle is operated to drive the plug gauge to rise and separate from the punching die. Finally, the reverse tightening bolt is loosened to disassemble the alloy straight tube and remove the calibration mechanism. The entire calibration process will not squeeze or damage the punching die.

[0009] An oil-absorbing sponge is fixed to the lower edge of the alloy straight tube. The oil-absorbing sponge is annularly sleeved on the outside of the plug gauge. The oil-absorbing sponge can absorb enough lubricating oil. When the plug gauge enters and exits the alloy straight tube, the surface contacts the oil-absorbing sponge and is dipped in lubricating oil. The lubricating oil can be used to lubricate between the plug gauge and the through hole on the punching die, thereby reducing friction and facilitating the plug gauge to freely fall into the upper through hole.

[0010] The outer sleeve of the oil absorbing sponge is provided with a ring-shaped rubber band. When the rubber band is tightened, the oil absorbing sponge is clamped so that the oil absorbing sponge can be close to the outer surface of the plug gauge, so that the lubricating oil covers the outer surface of the plug gauge as much as possible.

[0011] The upper edge of the alloy straight tube is connected and fixed with an internal threaded tube adapted to a clamping bolt, and the clamping bolt can be screwed along the thread of the internal threaded tube to circumferentially support the clamping bolt so that the clamping bolt can be stably installed on the upper edge of the alloy straight tube.

[0012] A reinforcing plate fixedly connected to the internal threaded pipe is integrally installed on the outer side of the alloy straight pipe to strengthen the connection between the tightening bolt and the alloy straight pipe to prevent breakage and the like.

[0013] An elastic rope is fixed on the upper surface of the plug gauge, and one end of the elastic rope away from the plug gauge is fixedly connected to the inner wall of the alloy straight tube. When the plug gauge is lowered, the elastic rope is stretched until it is taut. After the push handle is released, the plug gauge is automatically raised and separated from the upper through hole of the punching die under the action of the elastic rope recovering its deformation.

[0014] The technical effects achieved by this utility model are:

[0015] The utility model discloses a calibration mechanism for a punching and cutting die tooling machine. During calibration, the locking state of the punching and cutting die is first released, the punch is lowered to approach the punching and cutting position, the upper opening of the alloy straight tube is covered with the punch, the fastening bolt is rotated forward and screwed into the alloy straight tube until it is tightly pressed against the punch, the alloy straight tube is locked by friction, and at the same time, the freely hanging part of the plug gauge is exposed from the lower opening of the alloy straight tube and falls onto the upper surface of the punching and cutting die. The punching and cutting die can be moved by hand so that the upper through hole is directly opposite to the plug gauge, and the plug gauge can continue to fall into the upper through hole, the push handle is pressed against the lower surface of the key hole for limiting, the alloy straight tube and the plug gauge are straightly guided, the punch can be calibrated directly against the upper through hole at one time, after calibration, the punching and cutting die is locked, the push handle is operated to drive the plug gauge to rise and leave the punching and cutting die, and finally, the fastening bolt is reversed and loosened, the alloy straight tube can be disassembled, and the calibration mechanism can be removed, and the punching and cutting die will not be squeezed and damaged during the whole calibration process. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of a calibration mechanism of a punching die tooling machine of the present utility model;

[0017] Figure 2 It is the front view of the alloy straight tube of the present utility model;

[0018] Figure 3 It is the front view of the practical plug gauge;

[0019] Figure 4 It is a front view of this practical oil-absorbing sponge.

[0020] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0021] 1. Alloy straight tube; 2. Tightening bolt; 3. Key hole; 4. Push handle; 5. Plug gauge; 6. Oil-absorbing sponge; 7. Rubber band; 8. Internally threaded tube; 9. Reinforcement plate; 10. Elastic rope; 11. Punching die. DETAILED DESCRIPTION

[0022] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with the embodiments. It should be understood that the following text is only used to describe one or several specific implementations of the present invention, and does not strictly limit the scope of protection specifically requested by the present invention.

[0023] Embodiment 1:

[0024] like Figure 1-4 As shown, for the right-angle bending angle of the square tube, the punching die 11 must be directly opposite the punch along the punching direction. The alignment accuracy of the two determines the accuracy of the punched square hole (triangle), which needs to be calibrated on time. For this reason, we propose a calibration mechanism for the punching die tooling machine.

[0025] The calibration mechanism comprises an alloy straight tube 1, the middle of the front side of the alloy straight tube 1 is convex outward in a triangular shape, a tightening bolt 2 and a key hole 3 are arranged in sequence on the back side of the alloy straight tube 1 from top to bottom, one end of the tightening bolt 2 is threadedly penetrated through the upper edge of the alloy straight tube 1, a plug gauge 5 is inserted axially at the lower opening of the alloy straight tube 1, the upper edge of the plug gauge 5 is fixed by a push handle 4, one end of the push handle 4 extends out of the alloy straight tube 1 along the key hole 3, and the calibration mechanism is composed of the alloy straight tube 1, the tightening bolt 2, the push handle 4 and the plug gauge 5, which is adapted to the punch corresponding to the punching die 11. When calibrating, first release the locking state of the punching die 11, lower the punch close to the punching position, then cover the punch with the upper opening of the alloy straight tube 1, and rotate the tightening bolt 2 forward to screw it into the alloy straight tube 1 until it is tightened. The punch uses friction to lock the alloy straight tube 1. At the same time, the freely falling part of the plug gauge 5 is exposed from the lower opening of the alloy straight tube 1 and falls onto the upper surface of the punching die 11. The punching die 11 can be moved by hand so that the upper through hole is opposite to the plug gauge 5. The plug gauge 5 can continue to fall along the upper through hole and drive the push handle 4 to descend along the key hole 3 until the push handle 4 is against the lower surface of the key hole 3 for limiting. The alloy straight tube 1 and the plug gauge 5 are guided straightly, and the punch can be calibrated with the upper through hole at one time. After the calibration is completed, the punching die 11 is locked, and the push handle 4 is operated to drive the plug gauge 5 to rise and detach from the punching die 11. Finally, the locking bolt 2 is reversed and loosened to disassemble the alloy straight tube 1 and remove the calibration mechanism. The entire calibration process will not squeeze or damage the punching die 11.

[0026] Among them, the overall weight of the calibration mechanism composed of the alloy straight tube 1, the tightening bolt 2, the push handle 4 and the plug gauge 5 is relatively small, and can be taken with one hand. After tightening the tightening bolt 2, it can be stably suspended on the punch without the need for hand support, which is convenient for freeing up hands.

[0027] like Figure 1 and Figure 4 As shown, an oil-absorbing sponge 6 is fixed to the lower edge of the alloy straight tube 1. The oil-absorbing sponge 6 is annularly sleeved on the outside of the plug gauge 5. The oil-absorbing sponge 6 can absorb enough lubricating oil. When the plug gauge 5 enters and exits the alloy straight tube 1, its surface contacts the oil-absorbing sponge 6 and is dipped in lubricating oil. The lubricating oil can be used to lubricate between the plug gauge 5 and the through hole on the punching die 11 to reduce friction and facilitate the plug gauge 5 to fall freely into the upper through hole.

[0028] like Figure 1 and Figure 4 As shown, the outer part of the oil absorbing sponge 6 is covered with a ring-shaped rubber band 7. When the rubber band 7 is tightened, the oil absorbing sponge 6 is clamped so that the oil absorbing sponge 6 can be close to the outer surface of the plug gauge 5, so that the lubricating oil covers the outer surface of the plug gauge 5 as much as possible.

[0029] like Figure 1 and Figure 2As shown, the upper edge of the alloy straight tube 1 is connected and fixed with an internal threaded tube 8 that is compatible with the clamping bolt 2. The clamping bolt 2 can be screwed along the thread of the internal threaded tube 8 to circumferentially support the clamping bolt 2 so that the clamping bolt 2 can be stably installed on the upper edge of the alloy straight tube 1.

[0030] like Figure 1 and Figure 2 As shown, a reinforcing plate 9 fixedly connected to the internal threaded tube 8 is integrally installed on the outer side of the alloy straight tube 1 to strengthen the connection between the fastening bolt 2 and the alloy straight tube 1 to prevent breakage and the like.

[0031] like Figure 1 and Figure 3 As shown, an elastic rope 10 is fixed on the upper surface of the plug gauge 5, and one end of the elastic rope 10 away from the plug gauge 5 is fixedly connected to the inner wall of the alloy straight tube 1. The plug gauge 5 is lowered, and the elastic rope 10 is stretched until it is taut. After the push handle 4 is released, the elastic rope 10 recovers its deformation, and the plug gauge 5 is automatically lifted and separated from the upper through hole of the punching die 11.

[0032] The working principle of the utility model is: during calibration, first release the locking state of the punching die 11, lower the punch close to the punching position, then cover the punch with the opening on the alloy straight tube 1, and screw the tightening bolt 2 into the alloy straight tube 1 by forward rotation until it is tight against the punch, and lock the alloy straight tube 1 by friction.

[0033] At the same time, the freely falling part of the plug gauge 5 is exposed from the lower opening of the alloy straight tube 1 and falls onto the upper surface of the punching die 11. The punching die 11 can be moved by hand to make the upper through hole face the plug gauge 5. The plug gauge 5 can continue to fall along the upper through hole and drive the push handle 4 to descend along the key hole 3 until the push handle 4 is against the lower surface of the key hole 3 for limiting. By using the straight guide of the alloy straight tube 1 and the plug gauge 5, the punch can be calibrated against the upper through hole at one time.

[0034] After the calibration is completed, the punching die 11 is locked, and the push handle 4 is operated to drive the plug gauge 5 to rise and detach from the punching die 11. Finally, the reverse tightening bolt 2 is loosened to disassemble the alloy straight tube 1 and remove the calibration mechanism. The punching die 11 will not be squeezed and damaged during the entire calibration process.

[0035] Embodiment 2:

[0036] The calibration mechanism in the first embodiment is applied to a punching die fixture for a special-shaped workpiece. The special-shaped workpiece is supported at multiple points by the fixture and stands steadily on the workbench of the punching die fixture. The punching position faces the circular punch. At this time, the calibration mechanism is basically the same as that in the first embodiment, and the difference is that:

[0037] The punching die 11 is provided with a circular punch hole, which is suitable for the circular punch of the punching die tooling machine;

[0038] The alloy straight tube 1, the plug gauge 5 and the oil absorbing sponge 6 are all annular and adapted to the round punch;

[0039] The reinforcing plate 9 is in the shape of a fan ring and can fit the outer circle of the alloy straight tube 1;

[0040] The working principle is basically the same as that of the first embodiment, except that the special-shaped workpiece is placed on the punching die 11 and is generally fixed by a pressing clamp.

[0041] The above is only a preferred embodiment of the present invention. It should be noted that, for ordinary technicians in the field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A calibration mechanism for a punching die tooling machine, characterized in that: The invention comprises an alloy straight tube (1), wherein the middle of the front side of the alloy straight tube (1) is outwardly convex in a triangular shape, and the back side of the alloy straight tube (1) is provided with a clamping bolt (2) and a key hole (3) in sequence from top to bottom, and one end of the clamping bolt (2) is threadedly inserted into the upper edge of the alloy straight tube (1), and a plug gauge (5) is axially inserted into the lower opening of the alloy straight tube (1), and a push handle (4) is fixed to the upper edge of the plug gauge (5), and one end of the push handle (4) extends out of the interior of the alloy straight tube (1) along the key hole (3).

2. A punching die fixture calibration mechanism according to claim 1, characterized in that: An oil-absorbing sponge (6) is fixed to the lower edge of the alloy straight tube (1), and the oil-absorbing sponge (6) is annularly sleeved on the outside of the plug gauge (5).

3. A punching die fixture calibration mechanism according to claim 2, characterized in that: The oil-absorbing sponge (6) is externally sleeved with a ring-shaped rubber band (7).

4. The punching die fixture calibration mechanism according to claim 1, characterized in that: The upper edge of the alloy straight pipe (1) is connected and fixed with an internally threaded pipe (8) adapted to the tightening bolt (2).

5. A punching die fixture calibration mechanism according to claim 4, characterized in that: A reinforcing plate (9) fixedly connected to the internally threaded tube (8) is integrally mounted on the outer side of the alloy straight tube (1).

6. The punching die fixture calibration mechanism according to claim 1, characterized in that: An elastic rope (10) is fixed on the upper surface of the plug gauge (5), and one end of the elastic rope (10) away from the plug gauge (5) is fixedly connected to the inner wall of the alloy straight pipe (1).

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