JPH0518724U - Punch press machine - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a punch press machine that does not require a special driving device for tap processing and has a simple structure. [Structure] The punch press machine according to the present invention comprises a turret 1
The tool arranged on the circumference of No. 2 is rotationally moved to the punching position A to perform punching. The punch driving ram 40 and the tapping section 27 are provided. The punch drive ram 40 is provided at the punch processing position A so as to be vertically movable. The tap processing section 27 is provided at the tool placement position of the turret 12, and is vertically moved and rotated by the vertical movement of the punch drive ram 40 to perform tap processing.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch press machine, and more particularly, to a punch press machine that rotationally moves a tool arranged on the circumference of a turret to a punching position to perform punching.

[0002]

[Prior Art]

 Turret punch presses have been widely used to improve punching efficiency. This turret punch press is equipped with a rotatable upper turret and a lower turret in the processing section. The upper turret has a plurality of punch tools circumferentially arranged at predetermined intervals, and the lower turret has a plurality of die tools similarly circumferentially arranged at predetermined intervals.

In this type of turret punch press machine, various kinds of punching and forming are performed among plate processing. In addition to this, plate processing includes tapping, shearing, and so on. It is conventionally known that this tap processing is performed by a turret punch press machine. The tap processing part in such a turret punch press machine is provided on the upper frame, and the tap is moved up and down and rotated by a driving device different from the driving device for punching.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional configuration, another drive source for tap processing is required, which complicates the configuration of the turret punch press machine. Also, when tapping of many sizes is required, the configuration of the device becomes more complicated. An object of the present invention is to provide a punch press machine that does not require a special driving device for tapping and has a simple structure.

[0005]

[Means for Solving the Problems]

 A punch press machine according to the present invention performs punching by rotating a tool arranged on the circumference of a turret to a punching position and has a punch driving ram and a tapping section. The punch drive ram is installed at the punching position so that it can move up and down. The tap processing section is provided at the tool placement position on the turret, and the punch drive ram moves up and down to rotate and perform tap processing.

[0006]

[Action]

 In the punch press machine according to the present invention, the tap working portion is arranged along with the tool on the circumference of the turret. When performing punching, the tool placed on the circumference of the turret is rotated to the punching position, and the punching ram is moved up and down to perform punching. When performing tapping, the tapping section located on the circumference of the turret is moved to the punching position by rotation, and the punching ram is moved up and down to raise and lower the tapping section to perform tapping. I do.

As described above, since tapping is performed by the driving source of the punch press machine, a special driving device for tapping is unnecessary, and the device configuration is simplified.

[0008]

【Example】

 FIG. 1 shows the overall construction of a punch press machine according to an embodiment of the present invention. Incidentally, this punch press machine is a so-called multi-tool type in which a sub-turret is arranged in a turret. In the figure, the punch press machine 1 is mainly composed of a lower frame 2, an upper frame 3 arranged above the lower frame 2, and a throat section 4 for supporting these behind. A fixed table 10 is arranged at the center of the upper surface of the lower frame 2. A pair of guide rails 5 and 6 are arranged on both sides of the upper surface of the lower frame 2. A carriage 7 is arranged on the guide rails 5 and 6 so as to be movable in the depth direction (Y-axis direction). Moving tables 8 and 9 arranged on both sides of the fixed table 10 are fixed to the carriage 7. A cross slide (not shown) is provided on the carriage 7 so as to be movable in the left-right direction (X-axis direction). A work holder (not shown) for holding the work 11 is attached to the cross slide.

An upper turret 12 on which a plurality of punches are mounted is rotatably provided on the upper frame 3. On the other hand, the lower frame 2 is rotatably provided with a lower turret 16 on which a plurality of dies are mounted. A crank mechanism 14 driven by a drive motor (not shown), a flywheel, and the like is provided in the upper frame 3. The crank mechanism 14 drives the lifting ram up and down via the pitman.

Further, the upper frame 3 in front of the processing section is provided with a positioning pad 13 for temporarily holding the work 11 when holding the work 11. Next, the upper turret 12 and the lower turret 16 will be described with reference to FIG. In FIG. 2, a plurality of punch tools 20 are mounted on the circumference of the upper turret 12 at predetermined intervals. A shaft 15 is fixed at the center of the upper turret 12, and the shaft 15 is rotatably supported by the upper frame 3. A sprocket (not shown) is mounted on the shaft 15, and a chain connected to the drive motor is wound around the sprocket. Therefore, the shaft 15 and the upper turret 12 can be rotated by driving the chain. During this rotation, the mounting position of each punch tool 20 can be indexed to the punching position A.

Two sub-turrets 26 and 30 are mounted on the circumference, on which the punch tool 20 is attached, at positions facing each other with the shaft 15 interposed therebetween. A plurality of small tap tools 27 are mounted on one of the sub-turrets 26. A plurality of small punch tools 31 are mounted on the other sub-turret 30. The sub-turrets 26 and 30 are rotatable around their centers. By the rotation of the turret 12 and the sub-turrets 26 and 30, the mounting positions of the tools 27 and 31 are located near the punching position A.

On the other hand, the lower turret 16 has a die tool 21, a sub turret 28, and a receiving tool 29 corresponding to the punch tool 20, the sub turret 26, the tap tool 27, the sub turret 30, and the punch tool 31 of the upper turret 12. , A sub-turret 33 and a small die tool 34 are arranged respectively. Next, details of the sub-turrets 26 and 28 will be described with reference to FIGS. 3 is a plan view of the sub-turret 28 on the side of the lower turret 16, FIG. 4 is a side view of the sub-turrets 26, 28 at the time of processing with a tap tool 27, etc., and FIG. 5 is an enlarged cross-sectional view of its main part. Further, the sub-turrets 30 and 33 are different from the sub-turrets 26 and 28 in the tools to be mounted, but the other parts are common, and the description thereof is omitted.

In FIGS. 3 to 5, the sub-turret 26 on the upper turret 12 is vertically slidably fitted in the rotary cylinder 35 via the key 36. The sub-turret 26 is provided with a tongue 37 at its center position, and each tap tool 27 is provided on the circumference centered on the tongue 37. The tongue 37 is vertically slidably inserted into the sub-turret 26, is connected by a bolt 38 so that it cannot be pulled out, and is biased by a spring 39 so as to project upward. The tongue 37 is detachably connected to the elevating ram 40 of the crank mechanism 14 when the sub-turret 26 coincides with the punching position A.

A plurality of holes are formed on the circumference of the sub-turret 26, and each tap tool 27 is inserted into the holes so as to be vertically movable and rotatable. The tap tool 27 has a stem 41 at the top. The stem 41 has a stepped shaft 61 and a cylindrical portion 62. The lower part of the stepped shaft 61 is inserted inside the upper end of the cylindrical part 62, and both are fixed by screws. Further, on the outer periphery of the cylindrical portion 62, a spiral groove 63 in the same direction as the thread cutting direction is formed from the upper end of the cylindrical portion 62. The tip of a guide pin 64 embedded in the side wall of the tap tool storage hole of the sub-turret 26 is engaged with the spiral groove 63. Therefore, when the stem 41 moves up and down, the stem 41 is rotated.

A spline hole is formed at the lower end of the inner circumference of the cylindrical portion 62. A spline shaft 65 is engaged in the spline hole so as to be vertically movable. A stopper member 65a for lifting the tap tool 27 is fixed to the upper end of the spline shaft 65. The lower end portion is threaded, and the lower end portion is screwed into the tap portion 66 (FIG. 5). A blade for tap processing is formed on the outer periphery of the lower portion of the tap portion 66. A washer 68 having a hole through which the spline shaft 65 can be inserted is arranged on the upper surface of the tap portion 66. The spring 42 is arranged between the washer 68 and the lower surface of the cylindrical portion 62, whereby the upper end of the stem 41 projects above the sub-turret 26. A spring 67 is arranged in the space between the upper surface of the stopper member 65a and the lower portion of the stepped shaft 61. The spring 67 is for urging the spline shaft 65 downward.

The rotary cylinder 35 is rotatably supported by a fixed cylinder 43 fixed to the upper turret 12, and is prevented from coming off by a lower ring 44 at the lower end. An engaging portion 45 is provided on the upper surface of the rotary cylinder 35, and an engaging pin 46 for rotational driving is engaged with the engaging portion 45 from above in a disengageable manner. The elevating ram 40 is for driving the punch tool 20, and is vertically slidably provided on the upper frame 3 side at the punching position A. A punch tool 20 of the upper turret 12 and a tongue 37 of the sub-turret 26 are releasably engaged with the lower end of the elevating ram 40. Further, at the lower end of the elevating ram 40, a striking portion 47 for driving the tap tool 27 on the supportet 26 via the stem 41 is provided in a part in the circumferential direction.

A worm gear 48 is attached to the upper frame 3 so as to be rotatable around the axis of the elevating ram 40, and the worm gear 48 is connected to a servo motor via a worm (not shown). The worm gear 48 is provided with an engagement pin 46 that is vertically movable by a cylinder 49. Therefore, when the engaging pin 46 is engaged with the engaging portion 45, the sub-turret 26 is rotated about the axis center by the drive of the worm gear 48 via the rotary cylindrical body 35, and each tap tool 27 of the ram 40 is rotated. It can be indexed below the striking part 47. The sub-turret 26 is provided with a retaining plate 50 on the upper surface and a stripper 51 on the lower surface.

The sub-turret 28 on the lower turret 16 side is rotatably mounted on a fixed cylindrical body 52 fixed to the lower turret 16. The sub-turret 28 is driven by an indexing mechanism (not shown) in the housing 53 mounted on the lower frame 2 so that each receiving tool 29 is rotationally moved in correspondence with the tap tool 27 of the sub-turret 26. The indexing operation is possible.

A receiving plate 54 for receiving the lower turret 16 is mounted on the housing 53. An arm 55 extending upward is fixed to the upper surface of the receiving plate 54, and an index position sensor 56 is attached to the upper end of the arm 55. On the other hand, as shown in FIG. 3, a projecting portion 57 is formed on the outer periphery of the lower portion of the support 28 so as to correspond to each receiving tool 29. The indexing position sensor 56 is composed of a proximity switch or the like so as to detect the projecting portion 57, and detects the indexing position of the sub turret 28.

Next, the operation will be described. First, the case where machining is performed using the tool on the turret 12 will be described. In this case, the work 11 placed on the work tables 8, 9 and 10 (FIG. 1) is moved to the processing position A (FIG. 2). The work 11 is moved by moving the cross slide and the carriage 7 in the X and Y axis directions, respectively. Next, the upper turret 12 is rotated to move the desired punch tool 20 on the upper turret 12 to the processing position A. Further, the lower turret 16 is rotated together with the upper turret 12, and the die tool 21 corresponding to the punch tool 20 is moved to the processing position A. Then, the punching tool 20 is connected to the elevating ram 40, and the punching tool 20 is moved up and down to perform a predetermined machining.

Next, a case where tapping is performed on the work 11 using the tool of the sub-turret 26 will be described. When tapping is performed, the tap tool 27 and the receiving tool 29 on the sub-turrets 26 and 28 are used. The processing operation in this case will be described with reference to FIGS. First, similarly to the case described above, the desired position of the work 11 is moved to the processing position A. Then, the upper turret 12 is rotated to move the sub-turret 26 to the processing position A 1. Then, the tongue 37 of the sub-turret 26 engages with and is connected to the lower end of the lifting ram 40 as shown in FIG. Next, the sub turret 26 is rotated around the axis of the tongue 37 on the upper turret 12, and the desired tap tool 27 on the sub turret 26 is selected and indexed to a position below the striking part 47 of the lifting ram 40.

When the sub-turret 26 is rotated, the engagement pin 46 is lowered by the cylinder 49 and the engagement pin 46 is engaged with the engagement portion 45 as shown by a phantom line in FIG. Next, when the worm gear 48 is rotated by the servo motor, the rotary cylinder 35 is rotated via the engagement pin 46 and the engagement portion 45. As a result, the sub-turret 26 rotates and the desired tap tool 27 is indexed to the position below the striking portion 47.

On the other hand, also on the lower turret 16 side, after moving the sub-turret 28 to the processing position, the sub-turret 28 is rotated to index the receiving tool 29 corresponding to the desired tap tool 27. Then, when the sub turret 28 rotates, the sensor 56 detects the protruding portion 57 and stops both the sub turrets 26 and 28 at the indexing position.

Next, the lifting ram 40 is driven by the crank mechanism 18, and the work 11 is subjected to predetermined tap processing by the tap tool 27 and the receiver 29. That is, when the elevating ram 40 is lowered, the sub-turret 26 is lowered in the rotary cylinder 35 via the tongue 37 and the spring 39. Then, when the stopper 51 at the lower end of the sub-turret 26 contacts the upper surface of the work 11 and the sub-turret 26 stops descending, the spring 39 is compressed and only the tongue 37 descends. Therefore, the striking portion 47 strikes the head of the stepped shaft 61 of the stem 41. As a result, the spiral groove 63 formed on the side surface of the cylindrical portion 62 of the stem 41 and the guide pin 64 are engaged with each other, whereby the stem 41 descends while rotating. The rotation of the stem 41 is transmitted to the tap portion 66 via the spline shaft 65, and the tap portion 66 also rotates. The striking force applied to the stem 41 is transmitted to the tap 66 via the spring 67, the stopper member 65a and the spline shaft 65. It is transmitted to the tap unit 66.

In this way, the tap portion 66 descends while rotating, and the work 11 is tapped. At this time, since the pitch of the spiral groove 63 and the pitch of the tap portion 66 are usually different, there is a difference in the descending speed of both. This speed difference is absorbed by the cylindrical portion 62 sliding on the spline shaft 65 and the springs 42 and 67 retracting.

Subsequently, when the tongue 37 rises, the cylindrical portion 62 of the stem 41 rises due to the action of the spring 42 that has contracted accordingly. At this time, due to the engaging action of the spiral groove 63 and the guide pin 64, the cylindrical portion 62 rotates in the direction opposite to that at the time of machining, and the tap portion 66 also rotates in the same manner as described above. At this time, the spring 67 in the cylindrical portion 62 urges the spline shaft 65 downward, but when the Stoch member 65a reaches the bottom of the cylindrical portion 62, the spline shaft 65 rotates as the cylindrical portion 62 rises. While rising, the tap portion 66 comes out of the work 11.

Further, punching by the sub-turrets 30 and 33 is also carried out in substantially the same manner as described above. In this embodiment, the number and types of tools that can be attached to the entire turret can be increased without increasing the turret diameter. As a result, various kinds of drilling, tapping, etc. can be performed, and the degree of freedom in processing can be increased.

Further, since the punching tool or the tapping tool on the sub-turret side is hit by the striking part of the lifting ram, it is not necessary to match the punching tool or the tapping tool with the punching position, and the structure is simple and the press machine itself. The design is easy. [Other Embodiments] (a) In the above embodiment, the tap tool 27 is attached to the sub-turret 26, but the tap tool may be attached directly to the turret 12. (B) In the above-described embodiment, the sub-turret 28 is provided corresponding to the sub-turret 26 and is rotated. However, when only the tap processing is performed by the sub-turret 26, this may not be rotated. Rotation on the lower turret side is required only when tapping and punching are performed with a common sub-turret.

[0029]

[Effect of the device]

 In the punch press machine according to the present invention, since the tap processing section performs the tap processing by raising and lowering the punch drive ram, a special drive source is not required and the structure of the apparatus can be simplified.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a turret punch press machine according to an embodiment of the present invention.

FIG. 2 is a plan view of a turret of a turret punch press machine.

FIG. 3 is a plan view of a sub-turret on the lower turret side.

FIG. 4 is a side view of a sub-turret portion.

FIG. 5 is an enlarged sectional view of a sub-turret portion.

FIG. 6 is a perspective view of a tap tool.

[Explanation of symbols]

 12 Upper turret 16 Lower turret 26 Sub turret 27 Tap tool 40 Lifting ram 47 Impact part

Claims (1)

[Scope of utility model registration request] 1. A punch press machine for punching by rotatively moving a tool arranged on the circumference of a turret to a punching position, comprising a punch drive ram vertically movable at the punching position. A punch press machine comprising: a tap processing section which is provided at a tool placement position of the turret and which performs tap processing by raising and lowering the punch drive ram.