JPH0698426B2 - Rolling machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rolling machine used for processing a rotationally symmetrical work having a groove.

[Conventional technology]

A rolling machine having a special synchronous transmission mechanism and guide frames on both sides for each rolling slider is known from US Pat. No. 806215. Each guide frame is supported on a central shaft pin of at least two eccentrically stepped support roller shafts in a stand, and is guided longitudinally on the guide frame on the eccentric circumference of the support roller shafts. The supporting roller for the rolling slider is supported by rolling. By releasing the fixing means to the support roller shaft and rotating it uniformly, the distance between the rolling sliders can be changed. A special synchronous transmission mechanism is, for each rolling slider, a rack arranged on the rolling slider, a gear supported by the rack and an engaging guide frame, two gear transmissions, and between these gear transmissions. It consists of a flexure shaft arranged and a common intermediate gear, ensuring a reliable connection even when the spacing is changed.

[Problems to be Solved by the Invention]

In the case of this known rolling machine, due to the large distance between the inner guide frame structure and the supporting roller shafts, there is the drawback that the machining accuracy is poor due to the loss of mechanical rigidity, which loss of mechanical rigidity It must be compensated by a mass-strong rolling slider structure. In the case of overload, the distance between the rolling sliders cannot be increased rapidly, which adversely affects the life of the die and similarly makes it difficult to guarantee parallel adjustment of the guide frame.
Machining accuracy is also adversely affected. These add a great deal of cost to the release, rotation and relocking of a large number of support roller shafts. Furthermore, the special synchronous transmission mechanism is very expensive and has a very large tooth play, where tooth play and guide play are interrelated. Further, both the guide frame and the special synchronous transmission mechanism require high machining cost, assembly cost and correction cost.

A rolling machine in which the rolling sliders are arranged at an angle is known from Soviet inventor certificate 584949. The synchronous transmission mechanism is coaxially arranged so as to be relatively rotatable,
2 connected to rolling sliders via racks, respectively
It consists of two gears. By releasing the fixing means of both gears and rotating them, the rolling slider is moved relative to the longitudinal direction, and the rolling slider is arranged at an angle, so that the relative movement is such. Change the interval.

The disadvantage of the adjusting device in this known rolling machine is that the spacing of the rolling sliders cannot be increased rapidly in case of overload, which adversely affects the life of the die. Due to manufacturing engineering changes, the spacing of the rolling sliders can only be changed when the machine is stopped.
Another drawback is that the position of the rolling plane changes in the longitudinal direction of the rolling slider, which necessitates height adjustment of the insertion device and the withdrawal device with respect to the rolled parts.

[Object of the Invention]

SUMMARY OF THE INVENTION An object of the present invention is to provide a rolling machine having large mechanical rigidity so that the distance between the rolling sliders can be rapidly expanded or changed at a low manufacturing cost.

[Means for Solving the Problems]

According to the invention, this object can be achieved by means of the characterizing features of claim 1. Advantageous embodiments of the invention are described in the embodiment section of the claims.

According to the present invention, the following advantages are obtained as compared with the conventional rolling machine. That is, since only one guide frame is prepared on the one hand, the guide frame is arranged on the outside on the other hand, and the molding region is located in the planes of both supporting rollers, a high processing accuracy is provided. In that case, it is not necessary to make the stand, rolling slider and guide frame strong in mass in order to guarantee the mechanical rigidity. In the state of damage or overload or changes due to manufacturing technology,
By swinging the guide frame, the interval between the rolling sliders can be quickly increased or changed with a simple structure.
The life and processing accuracy of the dies are positively affected, and the method of manufacturing technology is expanded. This is adjusted via the lever,
This is done by releasing, rotating and re-fixing the support device of the eccentrically adjustable second support roller connected to the restraint and quick release combination device in a simple configuration. In a continuous rotating machine, the adjustment of the distance between the rolling sliders and the connection of this device with the measuring system without interruption of the work make it possible to quickly and steplessly correct the work error caused by the change of the manufacturing technical parameters. ing. Furthermore, the synchronous transmission mechanism is inexpensive and has only a very small tooth play which is independent of the guide play. The guide frame, rolling slider guide, and synchronous transmission mechanism are
They only need cheap processing, assembly and repair costs.

〔Example〕

BEST MODE FOR CARRYING OUT THE INVENTION The present invention will be described in detail below based on embodiments shown in the drawings.

The rolling machine mainly includes a stand 1, a first rolling slider 2 on the left side, and a second rolling slider 3 on the right side. Both rolling sliders 2 and 3 are linearly reciprocated by a hydraulically actuated cylinder 4 and have a wedge-shaped die 5. The work 6 is rolled in the molding region between these dies 5. Guide rods 9 and 9a are attached to the rolling sliders 2 and 3 with bolts 24. The first rolling slider 2 is guided between a support roller 7 on the back side of a guide rod 9 rotatably supported by the stand 1 and two eccentric adjustable first guide rollers 8. It Similarly, the second rolling slider 3 has a second supporting roller 10
And two sets of second guide rollers 11 are guided. The second guide roller 11 is arranged on the guide frame 12.
The guide frame 12 is supported by an eccentric bush set 14 via a slider block set 13 in a slider block guide, and is rotatably supported by a shaft 15 of a spur gear 16 in the stand 1. The eccentric bush set 14 is connected via a set of lateral levers 17 to a cross beam 18, which is connected to the working cylinder 19 on the one hand and to the stopper spindle 20 of the mechanical adjustment mechanism 21 on the other hand. Guide rod 9a is a guide rod
Similar to 9a, it is rigidly connected to the rolling slider 3 and slides between the guide roller 11 and the support roller 10 during translational movement. The synchronization of the rolling sliders 2 and 3 is guaranteed by the synchronous transmission mechanism,
This synchronous transmission mechanism includes a rack 22 provided on both sides of the rolling sliders 2 and 3 and a stand 1 that engages with the rack 22.
It consists of two spur gears 16 supported by. In order to reduce the deflection of the rolling sliders 2 and 3 as much as possible in order to improve the processing accuracy, the forming area of the work 6 is a support roller.
It is located in the center of the connecting line between the 7 and 10 axes.

In the normal operation of the rolling sliders 2 and 3, the lever 17 is pushed by the hydraulic actuating cylinder 19 via the cross beam 18 toward the stopper of the stopper spindle 20, whereby the restraint of the eccentric bush set 14 is achieved.

If the rolling force increases unacceptably, a signal is generated that the hydraulic pressure in the hydraulically actuated cylinder 4 has exceeded the limit value. By this signal, hydraulic pressure is supplied to the opposite side of the working cylinder 19, and the eccentric bush assembly is set via the lever 17.
14 is rotated. The guide frame 12 is rotated about the shaft 15 by the rotation of the eccentric bush set 14, and both support rollers
The interval between 7,10 is increased. As a result, both rolling sliders
The pull between the two and three is negated (the required rolling force is reduced and the machine is protected from overload).

By operating the mechanical adjusting mechanism, the distance between the rolling sliders can be finely adjusted steplessly without interrupting the work in the continuously operating machine. Both eccentric bushes 14 are synchronously rotated in the stand 1 by the operation of the lever 17, and the central axes of the eccentric bush 14 and the support roller 10 are eccentrically located in the stand 1. The distance between the sliders 2, 3 is increased or decreased.

In addition to changing the axial distance between the support rollers 7 and 10, the guide roller 11 must be adjusted synchronously to correct the position of the rolling slider 3. During the rotational movement of the eccentric bush 14, the shaft pin 23 is rotated by an amount of eccentricity similar to the support roller 10. The shaft pin 23 is supported by the sliding block 13. The sliding block 13 is interlockingly connected to the guide frame 12 via a sliding block guide. For the eccentric operation of the shaft pin 23, the guide frame 12 is fixed to the fixed shaft via the slide block 13.
Swing about 15. This swinging movement of the guide frame 12 moves the guide roller 11, whereby the rolling slider 3 is horizontally adjusted via the guide rod 9a. Shaft of rotation center of guide frame 12 and shaft 15 of spur gear 16
By matching with, even when the distance between the rolling sliders 2 and 3 changes, the tooth play between the rack 22 and the spur gear 16 also remains constant.

FIG. 3 shows, for example, various types of bolts, ball pivots,
Several workpieces have been shown that can be advantageously manufactured on a rolling machine, such as an intermediate compact for multi-stepped shafts or forged workpieces.

[Brief description of drawings]

FIG. 1 is a front view of a rolling machine according to the present invention, FIG. 2 is a cross-sectional view of this rolling machine, and FIG. 3 is a view showing an example of a work produced by the rolling machine according to the present invention. . 1 ... Stand, 2, 3 ... Rolling slider, 5 ... Die, 6 ... Work, 7 ... Support roller, 8 ... Guide roller, 10 ... Support roller, 11 ... Guide roller, 12 ... … Guide frame, 13 …… Guide block assembly, 14…
… Eccentric bush set, 16 …… Spur gear, 17 …… Lever, 18…
… Horizontal beam, 19 …… Working cylinder, 20 …… Stopper spindle, 21 …… Adjustment mechanism, 22 …… Rack.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Rotal, Katsuemann 5034 Germany, Erfurt, Bartburg Syutrase, 2 (72) Inventor Hans-Peter, Krasseu Germany 5063, Erfurt, Billy Albrecht Ring, 7/5

Claims (7)

[Claims] 1. A rolling machine having two rolling sliders that are linearly driven hydraulically, comprising a stand, guide frames on both sides supported by the stand, a support roller for each rolling slider, and a rolling roller. In a rolling machine comprising a synchronous transmission mechanism with a rack attached to a manufacturing slider, the only guide frame (12) consists of two substantially flat frame elements arranged outside the stand (1), A first rolling roller (7) in which a first rolling slider (2) is eccentrically and adjustably supported by a stand (1), and at least two which are eccentrically and adjustably supported by a stand (1). A second support roller (10) which is guided between the two first guide rollers (8) and is eccentrically adjustable and supported by the stand (1) on the second rolling slider (3); This support roller (10 At least two second guide rollers (11) eccentrically adjustable and connected to the slider block assembly (13) and a stand (1) via a guide frame (12) rotatably supported. ), An eccentrically adjustable eccentric bushing set (14) of the second support roller (10) is adjusted, restrained and quickly released via the levers (17) and cross beams (18) on both sides. The synchronous transmission mechanism is connected to a multi-function device (19, 20, 21), and the synchronous transmission mechanism is supported by a stand (1), and the rack (2
A rolling machine, characterized in that it has at least one set of spur gears (16) in mesh with each other. 2. An eccentrically adjustable support device for the second support roller (10) mainly comprising an eccentric bushing (14), wherein the slider block assembly and the support roller shaft are concentric with each other. The rolling machine according to claim 1, which is characterized by the above-mentioned. 3. An eccentrically adjustable supporting device for the second supporting roller is mainly composed of an eccentric shaft, and a shaft pin concentric with the supporting roller shaft is supported by a slider block. The rolling machine according to claim 1. 4. A set of spur gears (16) and a shaft of a rotation center of a guide frame (12) are aligned with each other, according to any one of claims 1 to 3. Rolling machine described in Crab. 5. Combined adjustment, restraint and quick release device (19,2)
0,21) is a mechanical adjustment mechanism (21) having a stopper spindle (20) and a pressure medium driven working cylinder (1
9. The rolling machine according to any one of claims 1 to 4, characterized in that it is constituted by 9). 6. A combination device for adjusting, restraining and rapid release (19,2).
The rolling system according to any one of claims 1 to 5, characterized in that the control system (0, 21) can be connected to a hydraulic drive control system of the rolling slider (2, 3). machine. 7. Combined adjustment, restraint and quick release device (19,2)
Rolling machine according to any one of claims 1 to 6, characterized in that the control system (0, 21) can be connected to a device for measuring the geometrical parameters of the workpiece (6). .