JPS6032917Y2 - Rolling machine - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a rolling machine for machining gears, serrations, etc. on the outer peripheral surface of a workpiece.

In a conventional rolling machine, a pair of rolling racks that face each other and move in parallel in opposite directions are formed with biting teeth, adjustment teeth, finishing teeth, and relief teeth in order from the tip, and between these rolling racks, The tooth profile was rolled on the workpiece by holding the workpiece in a direction perpendicular to the direction and moving a pair of rolling racks relative to each other in parallel.

That is, conventionally, each tooth was formed on one rolling rack in accordance with each rolling process.

Therefore, if the workpiece is a large diameter workpiece, a workpiece made of hard material, or the depth of the groove to be rolled is deep, that is, if the module is large, it is necessary to provide a large number of teeth for each rolling process. The length of the rolling rack becomes longer by the increase in the number of teeth, and the moving stroke of the rolling rack needs to be lengthened accordingly.

As a result, there was a drawback that the machine became larger due to the elongation of the guide surface of the rolling rack and the installation of a long stroke cylinder device.

The present invention eliminates these conventional drawbacks, and its feature is that rolling racks are provided in double rows, and rolling teeth are formed on these double rows of rolling racks in accordance with each rolling process. At the same time, one processing section of the workpiece can be moved axially to correspond to each row of rolling racks sequentially, and the rolling ranks are made into double rows of equal length, thereby shortening the stroke length and downsizing the machine. That's what happened.

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, 1 is a base, 2 is a frame body fixed on the base 1, and a left support 2a.

The right support 2b and the top plate 2c form a gate-shaped configuration.

Reference numeral 3 denotes a support member fixed to the left and right columns 2a and 2b, and a center mounting base 4 is integrally provided to this support member.

As is clear from FIG. 3, a support shaft 5a is supported on the center mount 4 so as to be slidable in the horizontal axis direction, and a movable center 5 that is moved integrally with the support shaft 5a is attached to the tip. It is being

The rear end of the support shaft 5a is connected to a piston rod of a pressing cylinder 7 fixed to the center mount 4.

Further, a synchronizing pinion 6 is rotatably supported on the center mounting base 4 near the movable center 5 to synchronize a pair of sliding bases 17a and 17b, which will be described later, in opposite directions.

The front ends of support bases 8 are fixed to the front surfaces of the left and right columns 2a*2b, and the rear ends are supported by support legs 9 erected from the base 1.

A pilot par 10 is installed on the support base 8 along a horizontal axis, and a tail stock 11 is guided and supported on the pilot par 10 so as to be movable forward and backward.

A tail stock 11 is guided and supported so as to be movable forward and backward.

The tail stock 11 is provided with a center 12 and a workpiece pedestal 13, which are concentrically opposed to the movable center 5.

Further, the tail stock 11 is moved forward and backward by a cylinder device 14 fixed to the support member 3, and the operating force of this cylinder device 14 is smaller than the pressing force of the pressing cylinder 7. have.

W indicates a workpiece, and Wl indicates a rolled part.

Guide stands 15 are integrally attached to the inner surfaces of the left and right columns 2a, 2b in the vertical direction, and sliding stands 17a, 1 are attached to the guide surfaces 16.
7b is mounted so that it can move up and down.

A pair of rolling cylinders 24 are fixed on the top plate 2c.
Piston rods 25a and 25b of a and 24b, respectively
is connected to each of the pair of sliding tables 17a, 17b, and moves the pair of sliding tables 17a, 17b up and down in opposite directions, and a synchronous rack 18 fixed to the sliding tables 17a, 17b is connected to the pair of sliding tables 17a, 17b. It meshes with the pinion to perform synchronous movement.

First rolling racks 19a, 19b and second rolling racks 20a+20b are provided on opposing surfaces of the pair of sliding tables 17a, 17b.
are fixed in parallel by a clamper by a combination of a first rolling rack 19a and a second rolling rack 20a, and a combination of a first rolling rack 19b and a second rolling rack 20b.

This clamper is a clamper 22 that clamps the vertical direction.
, 23, and a clamper 2 that is crimped onto the sliding tables 17a and 17b.
1, and 28 is a clamp bolt for tightening the clamper 21.

The first rolling rack 19a1, the second rolling rack 20a, the first rolling rack 19b1, and the second rolling rack 20b are arranged on the slide table 17a through the clampers 21, 22, 23 with their rolling tooth surfaces facing each other. , 17b, but its fixing means are sliding stands 17a, 17b as shown in FIG.
The support stand 27 integrated with 7b and the first rolling rack 19a1 second
A spacer 26 is interposed between the rolling rack 20a and the parallel back surfaces of the first rolling rack 19b and the second rolling rack 20b, and the height of the rack teeth can be adjusted by adjusting the thickness of the spacer 26.

Furthermore, the first rolling rack 19a1, the second rolling rack 20a, and the first rolling rack 19b1, the second rolling rack 20, which are arranged in parallel.
As shown in FIG. 4, the rolling teeth b roll one rolling part W1 of the workpiece W in a double row configuration on the first rolling racks 19a, 19b and the second rolling racks 20a, 20b arranged in parallel. Rolled teeth are formed according to each rolling process.

That is, the first rolling racks 19a and 19b are formed with biting teeth A and adjusting teeth B, and the second rolling rack 20a is formed with biting teeth A and adjusting teeth B.

A finishing tooth is formed on 20b.

Furthermore, the first rolling rack 19a and the second rolling rack on the sliding table 17a side are
In the case of the rolling rack 20a, an intermediate relief tooth CI inclined outward at an angle θ is provided at the upper end of the rolling rack 20a, as shown in FIG.
, C2 are also formed with relief teeth E at the lower end of the second rolling rack 20a.

The intermediate relief teeth CI and C2 at the upper end are aligned as shown in FIG.
Both the rolling rack 19a and the second rolling rack 20a are in the same phase, and the tooth height is the same or the tooth height on the second rolling rack 20a side is formed slightly lower.

In the case of the first rolling rack 19b and the second rolling rack 20b on one sliding table 17b side, the intermediate relief teeth CI and C2 having the same configuration as above are provided at the lower end, and the relief tooth E is provided at the upper end. It is provided.

In the embodiments shown in both figures, the first and second rolling racks are arranged in parallel, with biting teeth and adjusting teeth formed on one rolling rack, and finishing teeth formed on the other. The ratio at which the rolled teeth are formed into a pair of rolled teeth is changed depending on the shape, depth, etc. of the tooth groove to be machined.

Alternatively, three or more rolling racks may be arranged in parallel, and rolling teeth for each process may be divided and formed among these.

Next, the operation of the present invention will be explained.

In this type of conventionally known method, the rolling part W1 of the workpiece W is held between a pair of opposing rolling racks, and the rolling process is performed by synchronously moving the pair of rolling racks in opposite directions. The processing equipment of the present invention is the same as that of
The difference from the conventional method is that the rolling racks are sequentially shifted to a plurality of parallel rolling racks to perform predetermined processing.

That is, the workpiece W is carried onto the workpiece holder 13 installed on the tail stock 11 located at the rearward end and engaged with the pusher sensor 12 .

Then, the tail stock 11 is moved by the cylinder device 14.
is moved forward, and the movable center 5 is moved forward by the pressing cylinder 7.
advance.

As a result, when the workpiece W reaches a point where the phase coincides with the rolling part W1 and the first rolling racks 19a, 19b, the workpiece W also engages with the movable center 5, and both centers 5, 12 The forward movement of the tail stock 11 by the cylinder device 14 is interrupted and stopped.

Here, the rolling cylinders 24a and 24b perform one reciprocating operation.

That is, one rolling cylinder 24a starts moving downward from the rising end, and the other rolling cylinder 24b starts moving upward from the falling end.

As a result, one sliding table 17a moves downward, and the other sliding table 17b moves upward, and the synchronizing pinion 6 and the synchronizing rack 18 cause both sliding tables 17a and 17b to move synchronously in opposite directions. do.

At this time, the rolling portion W1 of the workpiece W is roughly rolled by the biting teeth A and the adjustment teeth B between the first rolling racks 19a and 19b.

One sliding table 17a is at the lower end, and the other sliding table 17
When b reaches the rising end, the rolled portion W1 of the workpiece W is located between the intermediate relief teeth C1, as shown by the imaginary line in FIG.

In this state, the bottom G of the tooth profile roughly rolled in the rolled portion W1 of the workpiece W is separated from the tip of the intermediate relief tooth C1, and the workpiece W is in a state where it can be shifted in the axial direction. .

Therefore, the pressure oil is discharged from the rear chamber of the cylinder device 15, and the tail stock 11 is advanced again until the rolling portion W1 is completely in phase with the second rolling racks 20a and 20b due to the pressing force of the cylinder device 14. move it.

Next, one rolling cylinder 24a is moved upward and the other rolling cylinder 24b is moved downward, and this time, the rolling part W1 is formed by the finishing teeth of the second rolling racks 20a and 20b.
Finishing process is carried out.

If the weight of the rolled racks is light, it is recommended to assemble multiple rolled racks together outside the machine using holders, etc., and then mount the assembled rolled racks on a support stand. In this way, the phase and height of the adjacent intermediate relief teeth can be adjusted in advance outside the machine, so that setup changes can be made quickly.

In this way, in the present invention, a plurality of rolling racks are arranged in parallel, and the rolling teeth for rolling one rolling part of a workpiece are formed in each rolling process using the plurality of parallel rolling racks. The rolling racks can be divided into sections according to the conditions, and the workpiece can be shifted so that the rolling section corresponds to each row of rolling racks, so the rolling racks can be significantly shorter than conventional ones. It has a uniform length that is no different from the conventional one, and the required rolling process can be performed, and the movement stroke of the rolling rack is also shortened, so the guide surface of the rolling rack and the rolling cylinder are The machine can be made smaller due to the shorter length, and furthermore, since both reciprocating processes are performed, there are advantages such as less energy loss.

[Brief explanation of the drawing]

Figure 1 is a side view of the rolling machine according to the present invention, and Figure 2 is the same as Figure 1■
Figure 3 is a cross-sectional view taken along the line - ■, Figure 3 is a cross-sectional view taken along the line -■ in Figure 2, Figure 4 is an explanatory diagram showing the specific structure and operation of the rolling rack, and Figure 5 is the middle of the end of the rolling rack. It is a perspective view showing a relief tooth part. 1...Base, 2...Frame body, 3
...Supporting member, 5...Movable center, 5
a... Support shaft, 6... Synchronous pinion,
7...Press cylinder, 8...Support base, 10...Pilot bar, 11...
...Tailstock, 12...Shinjindai Center,
13... Workpiece holder, 14... Cylinder device, 15... Guide stand, 17a, 17b...
...Sliding stand, 18...Synchronized rack, 19a
, 19b...First rolling rack, 20a, 2
0 b""Second rolling rack, 21, 22, 23...
... Clampa.

Claims (1)

[Scope of utility model registration request] A plurality of rolling racks are installed in parallel on the opposing surfaces of a pair of sliding tables that face each other and move synchronously in parallel in opposite directions, and rolling teeth are attached to these rolling racks during the rolling process. At the same time, relief teeth are formed at the end of the rolling rack to allow axial movement of the workpiece in the same phase and with the same tooth height or a slight difference in tooth height. This rolling machine is equipped with a shift device that moves the workpiece held perpendicularly between the racks by the relief teeth, and sequentially makes one processing section correspond to each rolling rack.