JPH11221698A - Phase-regulating device of main drive of press - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a phase-regulating device of a main drive of a press which is easy in the phase-regulating work of right and left points of a slide, and capable of obtaining higher accuracy. SOLUTION: A drive shaft 3 is split into right and left components, and the spline 3A, 3B same in module and different in tooth number by one tooth are provided on shaft end parts of the right and left drive shafts 3. One tooth S of an internal tooth spline 13A and one tooth S' of an internal tooth spline 13B to fit the spline 3A, 3B, are provided at the position of the same center angle, i.e., on one line in the axial direction, and the first tooth 1 of the spline 3A and the first tooth 1' of the spline 3B are engaged with the tooth S of the internal tooth spline 13A and the tooth S' of the internal tooth spline 13B respectively to change the engagement. The phase-regulating accuracy of the minimum angle can be obtained thereby, and the required phase regulation can be obtained by subsequently changing the engagement of 2, 2', 3, 3',....

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a phase adjusting device for a main drive of a press machine which drives a slide up and down by driving the slide at two points on the left and right, and more precisely measures the parallelism between the bolster provided on the bed and the slide. This is effective when you want to adjust to.

[0002]

2. Description of the Related Art In a press machine in which a slide is driven at two points on the left and right sides to move up and down, phase connection is performed by variously devising a connection portion of a drive shaft connected to the left and right crankshafts at a constant reduction ratio. . According to the method of key connection, one pinion of the reduction gear train to be keyed to the drive shaft is regularly keyed and connected, and the other pinion is temporarily connected by a special jig for phase setting, and phase setting is performed. After confirming the accuracy adjustment, the pinion was removed, keyed, and reassembled. In the case of the positioning pin, the intermediate gear of one reduction gear train has a separate structure consisting of a boss and a rim, phase adjustment is performed in a temporarily tightened state, and after confirming the accuracy adjustment, the intermediate gear is disassembled and the boss is disassembled. After drilling holes for positioning pins on the rim and connecting them with reamer bolts, reassembly was performed. Further, in the case of a friction type joint coupling in which the shaft and the boss are fixed by limiting the fastening torque of the bolt, the drive shaft is separated to the right and left, and a temporary connection is made between these parts by a set of friction type joint couplings. Then, after adjusting the phase adjustment and confirming the accuracy adjustment, the tightening bolts of the friction type coupling shaft coupling are connected by controlling the torque. In addition, there are those that connect the left and right drive shafts with a split coupling and those that are warm-fitted,
Since it is similar to that described above, further description is omitted.

[0003]

With the above-described key connection and positioning pin, the processes are temporarily assembled, phased out, dismantled, processed, and re-assembled, and it is difficult to reduce the number of steps in the two processes of assembling. There is a disadvantage that the cost increases. In the case of the friction-type fastening shaft coupling, the friction-type fastening shaft coupling is a purchased product and is expensive. Moreover, since the connection is performed by fastening, a phase shift may occur depending on a load. This is a necessary condition, and has disadvantages such as inconvenience in using the press machine.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a phase detection device for a main drive of a press machine, which can complete the work only by adjusting a connecting portion between left and right drive shafts for phase determination after temporary assembly. To provide.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a drive system in which respective crankshafts connected to left and right points of a slide are connected to a drive shaft by a gear train having an equal reduction ratio. In a phase determining device for a main drive of a press machine having a system, a drive shaft is divided into two parts, and modules are equal to each other at the shaft ends of the divided left and right drive shafts, and the number of teeth is set to one.
The splines that are different from each other are provided, and the internal splines fitted with these splines are connected to each other by the spline sockets provided at both ends so that the centers thereof coincide with each other, and the meshing of both splines is performed with one tooth or the required number of teeth. By shifting, fine phase adjustment can be performed.

In the above-described phase setting device of the main drive of the press machine, each of the internal splines at both ends of the spline socket has one of the internal teeth located in the same central angle direction, and the phase setting adjustment operation is performed. Be easy.

In the above-described phase setting device for a main drive of a press machine, a plurality of sets of shaft ends of the left and right drive shafts are provided in series with the same center, and one tooth different from each other. It is possible to finely adjust the phase by adjusting the engagement of both serrations by one tooth or the required number of teeth.

In the above-described phase determining device for the main drive of the press machine, splines having different numbers of modules and having approximately the same pitch circle are provided at the respective shaft ends of the left and right drive shafts. The splines of both drive shafts and the splines of the spline socket are engaged with one spline socket, and the spline sockets provided at both ends are connected so that the internal splines to be fitted with each other are aligned. By shifting the number of teeth, fine phase adjustment can be performed.

[0009]

1 to 4 show an embodiment of a phase finding device for a main drive of a press machine according to the present invention. 1 and 2, a first embodiment of the present invention will be described. The press machine 1 shown in FIG. 2 connects / disconnects the power of a flywheel 2 rotationally driven by a main motor (not shown) to and from a drive shaft 3 by a clutch / brake (not shown) provided on the flywheel 2. The drive shaft 3 is connected in a straight line by a connecting portion 4 indicated by a dashed line, and is rotatably supported by a frame 5 of the press machine 1.

Pinions 6 are fixed to the left and right drive shafts 3 connected by the connecting portion 4, respectively, and are rotatably provided on intermediate shafts 7 fixed to the frame 5 in parallel with the drive shaft 3. The intermediate gears 8, 8 mesh with the pinions 6, 6. Each of the intermediate gears 8, 8 has a main pinion 9,
9 are provided integrally. Main gears 11, 11 are provided on crankshafts 10, 10 rotatably supported on the frame 5 in parallel with the drive shaft 3, and are engaged with main pinions 9, 9. These gear trains, namely, the pinion 6, the intermediate gear 8, the main pinion 9, and the main gear 1
The reduction ratio of 1 is usually set at 1/15. Crankshaft 1
The other ends of the connecting rods 12, 12 connected to the 0, 10 eccentric portions 10A, 10A are connected to slide points (not shown).

With the above configuration, the slide is moved up and down by the power of the drive shaft 3. The slide moves up and down while maintaining the parallelism with the bolster on the bed (not shown). However, the configuration for each of the left and right points includes a slight error, and the parallelism may be reduced. A device that adjusts the phases of the left and right drive shafts 3 and 3 to improve the accuracy of the parallelism is provided in the connecting portion 4.

FIG. 1 shows a first embodiment of a phase adjusting device provided in a connecting portion 4 of the left and right drive shafts 3, 3, and as shown in FIG. The spline 3A and the spline 3B which have the same module and differ in the number of teeth by one tooth are provided at the shaft end. Internal splines 13A that fit with these splines 3A and 3B,
The left and right drive shafts 3, 3 are connected by fitting the spline sockets 13 provided at both ends with the center of 13B coincident with the splines 3A, 3B. Spline socket 13
FIG. 1B is a cross-sectional view of the internal spline 13A of FIG. 1 cut along AA, and FIG. 1B is a cross-sectional view of the internal spline 13B of the spline socket 13 taken along BB.
(C) shows each. One tooth S of the internal spline 13A and the internal spline 13B of the spline socket 13,
S 'are provided at the same central angle.

As an example, a spline 3A is a module 3, a number of teeth 69, a spline 3B is a module 3, a number of teeth 7
0, slide stroke length 360mm, reduction ratio 1 /
15. Connecting rod length 1260mm, ratio of rod 1
/ 7, when the combination of the left and right teeth is Z1 and 1 ′, the phase shift angle θ of the left and right teeth is 0.074553416.
°, stroke change amount is sin θ × stroke / 2 ×
From 1/15, it becomes 0.0156 mm. Similarly, when the combination of the left and right teeth is Z2 and 2 ', the phase shift angle θ of the left and right teeth is 0.14906832 °, the stroke change amount is 0.0312 mm, and the combination of the left and right teeth is Z3 and 3'. , The phase shift angle θ between the left and right teeth is 0.
22360248 °, stroke change amount is 0.046
When the combination of 8 mm left and right teeth is Z4 and 4 ', the phase shift angle θ of the left and right teeth is 0.29813664 °, and the stroke change amount is 0.0624 mm. When the combination of left and right teeth is Z5 and 5', the left and right The phase shift angle θ of the tooth is 0.
37260708 °, stroke change amount is 0.078
1 mm. Therefore, from the above, in the combination of Z1 and 1 ′, the minimum change amount is 0.0156 mm × １ ／ =
Accuracy up to 0.0078 mm is possible. Here, the combination of Z1 and 1 'means that the tooth S of the internal spline 13A and the tooth S' of the internal spline 13B of the spline socket 13 shown in FIG. In this case, the teeth S and S 'are engaged with the teeth Z1 of the spline 3A and the teeth Z1' of the spline 3B. Hereinafter, the same applies.

FIG. 3 shows a second embodiment of the phase adjusting device provided in the connecting portion 4. Serration cylinders 15A, 15 attached to the shaft ends of the left and right drive shafts 3, 3 with nuts 14, 14
B is provided, and serrations 16A and 16B meshing with the serrations 15A and 15B are interposed between the cylindrical serrations 16 provided on both side surfaces. That is, a plurality of serrations differing in the number of teeth by one tooth are provided coaxially in series. The operation of adjusting the phase by changing the meshing is the same as that of the first embodiment, and therefore the description is omitted.

FIGS. 4 (a) and 4 (b) show a third embodiment of the phase adjusting device provided on the connecting portion 4, wherein the left driving shaft 3 is provided.
4A, for example, the module 3.75, the number of teeth 42, and the pitch circle diameter 164.25 are indicated by solid lines in FIG.
mm spline 3A and the right drive shaft 3
At the shaft end, for example, a module 3, a number of teeth 52, a spline 3B having a pitch circle diameter of 161.4 mm, which is indicated by a dotted line in FIG. The splines 13B are connected by spline sockets 13 provided at both ends so that the centers are aligned. That is, the splines 3A and 3B have different modules from each other, and have the same number of teeth as the pitch circle diameter.

With the above configuration, the number of rotations of the drive shaft 3 is 450
Assuming that the rotation speed of the crankshaft is 30 rpm and the stroke length is 360 mm, the least common multiple of the number of teeth of the splines 3A and 3B is 21 × 21 = 546, and the speed ratio between the crankshaft and the drive shaft 3 is 30/450. = 1/15, the adjustable angle (crank angle) is 360 ° / (15 × 546 × 2) = 0.0219 °. Therefore, the maximum change amount of the stroke at the middle point of the stroke, that is, the maximum adjustable value is , Sin 0.0219 °
× 360/2 = 0.069 mm, and sufficient parallelism accuracy can be obtained. The operation of adjusting the phase by changing the meshing is the same as in the first embodiment, and a description thereof will be omitted.

[0017]

As is apparent from the above description, according to the present invention, the connecting portions of the left and right drive shafts are changed from the first embodiment to the third embodiment.
With the configuration of the embodiment, fine phase adjustment can be performed only by changing the engagement of splines or serrations. Thereby, the parallelism of the slide can be adjusted with high accuracy. In addition, since the adjustment is performed only for the connection portion of the drive shaft, the temporary assembly and the disassembly after the phase setting are partial, and the processing is not required. Therefore, even if the assembly is performed again, the man-hour can be greatly reduced.

[Brief description of the drawings]

FIG. 1A is a front view of a main part of a connecting portion of a drive shaft according to a first embodiment of the present invention. FIG. 1B is a cross-sectional view taken along the line AA in FIG. BB sectional view

FIG. 2 is a front view of a main part of a press machine using the first embodiment of the present invention.

FIG. 3 is a front view of a main part according to a second embodiment of the present invention.

FIG. 4A is a side view of a main part of a spline in a third embodiment. FIG. 4B is a front view of a main part of a connecting part of the drive shaft.

[Explanation of symbols]

1 is a press machine, 2 is a flywheel, 3 is a drive shaft, 3
A, 3B are splines, 4 is a connecting part, 5 is a frame, 6
Is a pinion, 7 is an intermediate shaft, 8 is an intermediate gear, 9 is a main pinion, 10 is a crankshaft, 10A is an eccentric part, 11 is a main gear, 12 is a connecting rod, 13 is a spline socket, 13A and 13B are internal splines, 14 is a nut, 15 is a serration cylinder, 15A and 15B are serrations, 16 is a cylindrical serration, 16A and 16B
Is a serration, 17 is an outer cylinder, and 18 is a lid.

Claims (4)

[Claims] 1. A phase determining device for a main drive of a press machine having a drive system in which respective crankshafts connected to left and right points of a slide are connected to a drive shaft by a gear train having an equal reduction ratio. The drive shaft is divided into two parts, left and right, and splines provided at the shaft ends of the divided left and right drive shafts with equal modules and different numbers of teeth from each other, and (b) these splines And a spline socket provided at both ends with the center of the internal spline fitted with the spline fitted to the center. 2. The main drive of a press machine according to claim 1, wherein each of the internal splines at both ends of the spline socket has one of the internal teeth located in the same central angle direction. Phase out device. 3. The detachable serration according to claim 1, wherein the shaft ends of the left and right drive shafts have the same center, and a plurality of sets are provided in series with one tooth different from each other. A phase finding device for a main drive of a press machine, which is connected. 4. The module according to claim 1, wherein (a) modules are different from each other at the shaft ends of the left and right drive shafts.
And (2) spline sockets provided at both ends with the center of the internal spline fitted with these splines being aligned. A phase setting device for the main drive of a press machine.