KR960006620B1 - Method and apparatus for precision mold forging - Google Patents

Abstract

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Description

High precision swaging method and swaging device

An object of the present invention is to improve the processing accuracy by reducing and absorbing vibrations by the machining of the present invention. As another configuration, the motor axis is arranged on the center line of the processing portion, and a flywheel is incorporated in the swaging housing. The present invention relates to a high-precision swaging method and a swaging device having a planetary reduction mechanism as well as a bearing.

(Conventional technology)

In the known swaging machine, the flywheel is exposed and is connected to the machining portion in a relatively long axis. In addition, the conductive system is usually interposed with a belt. The flywheel is usually hypothesized through a bearing.

Moreover, the conventional swaging process is performed by providing a flywheel between the input shaft end of a rotating shaft and the bearing of the die holder side, applying a rotational force to this flywheel, or connecting a rotating shaft directly with a motor (for example, Japan Special Agency 51-A). 31232).

(Problems to be solved by the invention)

According to the conventional swaging machine, since the processing part is exposed and the bearing is provided, there is a problem that causes noise. In addition, when the flywheel and the processing unit are connected by a relatively long axis, there is a problem that distortion occurs.

In addition, in the case of gear conduction, a normal belt is used to destroy the gear shaft, and since the motor must be decelerated, the motor shaft center and the machining center line do not coincide with each other, and noise in the conduction system has been caused.

In addition, according to the conventional swaging device, since bearings are provided adjacent to the die holder, there is a problem that preload cannot be applied to the hammer roll.

When the preload of the hammer roller cannot be applied as described above, there is a fear that the idle state of the hammer roller may be uneven, and as a result, the position of the pressure pressure with respect to the material of the die may not be as set, and the pressure at least at an uneven angle. This has been done to reduce locally, or to reduce the dimensional accuracy of the product.

When the material in the above was pressed at an uneven angle (for example, plural tapping pressures at the same position), fins were formed in the product as shown in Fig. 9, resulting in poor processing.

In such a case, not only the poor processing of the product, but also the rotational force generated in the material by the pin, there was a concern that the operator may be unexpectedly harmed.

In addition, in order to give the twisting effect to the die through the rotation axis of the flywheel, the machining precision is low (e.g., ± 0.02mm to ± 0.05mm), and depending on the purpose of the product, machining of rough finish and final finish after swaging There was a problem that needed.

Therefore, due to the nature of the swaging process, it is impossible to improve the interruption of die pressure, the processing distortion (vibration) and the noise generated on the rotating shaft. Therefore, the range of the product that can be swaging is limited in terms of precision. All. The relationship between the shape of the die processing part in the swaging process and the external diameter of the product is as shown in FIG. In other words, the range of 60 ° to 90 ° in the center of the die 9 is in a shape (for example, a part of a circle) that exactly matches the outer diameter of the product. This enlargement facilitates the escape of the material.

Therefore, when pressing the same place of material twice at the time of pressing, the outer diameter of this part will be reduced. In the same way, unevenness of the other rotating pressure causes a decrease in product accuracy.

However, the present invention connects the motor shaft, the solar roller and the planetary roller through the automatic pressure adjusting means, and also installs the planetary roller on the fly wheel, and furthermore, between the outer side of the die holder and the inner wall of the swaging housing which are continuously installed at the end of the solar roller. The conventional problem is solved by mounting a haemo roll in between, and closing the outer side of the flywheel to accommodate the flywheel at the processing flow rate.

In addition, the present invention encloses the flywheel in the processing oil of the housing, and at the same time, by installing the flywheel between the die holder and the bearing of the rotary shaft, the preload of the hammer roller is possible, so that the revolving can be accurately performed. I solved it.

That is, the method of the present invention is a swaging method of rotating a rotating shaft having a die holder together with a flywheel, wherein the flywheel is a high precision swaging method characterized in that it is enclosed in a fluid liquid in a swaging housing. Liquid is used as the processing oil, and the processing oil is provided with a flow force in one direction due to the rotation of the flywheel.

Next, the apparatus of the present invention is a swaging device in which a flywheel is installed on a rotating shaft having a rotational force input means connected to one side and a processing means provided on the other side, wherein the flywheel is formed between a die holder of the rotary shaft and an input shaft bearing. A high precision swaging device characterized in that it is hypothesized in between, in a swaging device in which a flywheel is installed on a rotating shaft in which a rotational force input means is connected to one side and a processing means is installed on the other side, wherein the flywheel is formed of a rotating shaft. A high precision swaging device, which is constructed between the die wheel and the input bearing, and is enclosed during flow sharing in the swaging housing.

In addition, the flywheel outer surface of the present invention is a high-precision swaging device provided with a groove for imparting a flow force in a predetermined direction to the processing oil. The processing oil may be a processing oil generally used, such as rolling oil, swaging oil.

The processing precision according to the present invention can easily achieve ± 0.005mm and at the same time maintain a high precision within ± 0.003mm when processed in a sufficiently managed state.

It can be considered that the present invention can exhibit high precision for approximately the following reasons.

(1) A preload can be applied to the hammer roll.

Since the bearing is not interposed between the die holder and the flywheel, the hammer roller can be preloaded. Therefore, the hammer roller can be rotated in an orderly manner.

(2) Reduced vibration (direction perpendicular to the axis).

By constructing the flywheel close to the die holder, the unbalanced vibration generated during the rotation of the flywheel and die processing can be reduced as much as possible.

(3) Reduced vibration (axial direction).

Since the flywheel was enclosed in the processing flow rate of the housing to impart a flow force in a predetermined direction to the processing oil, the flywheel always rotates in a pressurized state in the constant direction by the repulsive force.

Therefore, since the flywheel is forced to rotate in position, the axial vibration of the rotating shaft can be reduced as much as possible.

(4) Absorb vibration.

Since the flywheel rotates in the encapsulation cavity, vibration energy generated in the flywheel is absorbed by the processing oil, and its manifestation is suppressed.

(5) Thermal expansion is fixed within a certain range.

In order to flow the processing oil by using the flywheel, the processing oil can be used to cool the respective parts of the processing member to perform constant temperature processing, whereby the change due to thermal expansion other than the dice is suppressed as much as possible.

(6) Normal machining of machining members is possible.

In the swaging process, when the metal material is processed at high temperature, metal oxides may be inserted into each part of the processing-related member, which may adversely affect the processing accuracy.However, the processing of the processing oil, cleaning, constant flow of constant temperature, etc. The formation and inclusion of foreign matter can be prevented in advance.

(7) The management precision can be improved.

By accurately grasping the thermal expansion and the like of the processing corners, it is easy to maintain the predetermined processing accuracy. In particular, the reduction in axial vibration significantly improves the longitudinal accuracy of the product. For example, in the case of swaging the rotating shaft, if the precision of roughness finish is obtained, the product is produced only by the final finishing of the required part (for example, the bearing part), thereby reducing the processing cost.

Another apparatus outside the apparatus is a device which is arranged to radially arrange a plurality of dice with the machining portion as the center position, and rotates the hammer roller through the backer at the same time, and revolves around the center line of the machining portion. The drive motor is fixed, and the sun roller is connected to the drive motor shaft through an automatic pressure regulating means, and the shaft is connected to the planetary roller so as to decelerate and drive the planetary roller at equal intervals. It is hypothesized on one side of the flywheel on the same center line as the axis, and a die holder is installed in the other center of the flywheel, and a hammer roll is installed between the outer circumference of the die holder and the inner wall of the swaging housing. It is a swaging machine characterized by one.

Another invention is that the automatic pressure adjusting means between the motor shaft, the solar roll and the planetary roller restrains the rotational direction on the motor shaft to fit the flange bush, and the solar bush is fitted to the flange bush. The steel balls are loosely inserted into the relief-shaped recesses provided between the inner surface and the base end surface of the sun roller, and the axial movement force is applied to the sun roller by the rotation of the flange bush. Silver was formed with a taper having a tip diameter side, and the outer wall of the planetary oil was formed to be rotated by pressure contact with the outer wall of the solar roller by automatic pressure adjustment.

Another invention is that the flywheel is rotatably supported by a planetary roll in which the solar roller rotates between the outer wall and the inner wall of the roller housing.

Another invention is that the outer circumference of the flywheel is accommodated in the flow rate by closing in the swaging housing, the groove is provided with a groove for the flow of oil by rotating on the outer wall of the flywheel.

In the above, since the flywheel is enclosed in the swaging housing, if oil is supplied from one side to the inside of the swaging housing and drained from the other, various advantages such as internal cleaning, temperature control and noise suppression can be expected by the circulation of the oil.

In addition, since the flywheel is rotated by transmitting a planetary roll to the outer wall of the solar roll, the rotation speed of the motor can be reduced in the electric system.

Since the solar roller, the planetary roller, the flywheel, the hammer roller, and the like are hypothesized without any independent bearing bearings, lubrication and noise generation due to the bearing bearings can be suppressed to the minimum.

1 is a front view of a part of an embodiment of the present invention;

2 is a cross-sectional view taken along line A-A in FIG.

3 is the same front view,

4 is a side view of a part of an embodiment of the present invention with the cover removed;

5 is a perspective view showing a hypothetical state of a part of the planetary roll of the embodiment of the present invention;

6 is a longitudinal front view of another embodiment of the present invention;

7 is the same side view,

8 is an explanatory diagram of the same die processing;

9 is an enlarged perspective view of a part of a product when processing is poor.

* Explanation of symbols for main parts of the drawings

1: motor shaft 2: bush

3: sun roll 5: meteor roll

6: Row Housing 7: Fly Wheel

8: swaging housing 9: dies

10: Becker 11: hammer roll

12: motor 13: die holder

14,15: recessed portion 16: steel ball

17: key 35: rotation axis

36: internal race 37: internal and external frames

38: housing cover 39: bearing

40: pulley 42: spiral groove.

According to the present invention, the vibration can be absorbed at the same time as reducing the vibration in the direction perpendicular to the axis of rotation as well as the axis of the axis of rotation. As a result, the noise can be blocked and collected to reduce the noise.

In another invention, a planetary roll is placed on a solar roller to allow the motor shaft to be hung or peeled off, and the planetary roll is decelerated and driven through the planetary roller, and the hammer wheel is driven again while the flywheel is hypothesized within the swaging housing. Therefore, if lubricating oil is supplied to the outer space of the flywheel, the flywheel, the die holder, etc. will operate in this oil, and it will not only absorb the noise as much as possible, but also clean the foreign substances generated during processing, and also provide special lubrication means. Various actions are expected, such as not required.

In addition, the recess and the steel ball push the solar roller to the planetary roller by the rotation of the motor shaft and conduct the rotational force of the motor shaft to the solar roller. In addition, since the motor shaft and the machining portion are close to each other, there is no fear of distortion in the conduction system.

(Example)

Hereinafter, preferred embodiments of the present invention will be described using the accompanying drawings.

(Example 1)

The hammer roll was rotated by 242 revolutions per minute, 67 seconds per second in pressure, 750 revolutions per minute, and 30% of the pressurized position on the workpiece. In this case, the workpiece was made of Garing carbon steel (standard tempering material) with a material diameter of 6 mm, which was processed to a product diameter of 5.02 mm. The processing speed was 30 mm per second. In this case, the diameter precision of the product in this case was ± 0.005 mm, and the diameter precision in the axial direction was ± 0.005 mm.

(Example 2)

An embodiment of the present invention will be described with reference to FIG.

The rotating shaft 35 is temporarily installed in the center of the swaging housing 8. One side of the rotary shaft 35 is provided with die holders 13 and 13 for holding the dies 9 and 9, while holding the dies 9 and 9, while holding the dies 9 and 9, Sliding movement of the backer (10,10) to the outside of 9,9) is installed freely.

The inner race 36 is provided at a position facing the backers 10 and 10 on one inner wall of the swaging housing 8, and eight hammer rolls 11 and 11 are placed inside the inner race 36. By arranging at intervals, the axes of the hammer rolls 11 and 11 are maintained in the inner and outer frames 37 and 37a.

The housing cover 38 is fixed to the other side of the swaging housing 8, and the pulley 40 is disposed at the outer end of the rotating shaft 35 by supporting the rotating shaft 35 through the bearing 39 at the center of the housing cover 38. ).

In the lumen 41 of the swaging housing 8, the flywheel 7 fixed to the rotation shaft 5 is accommodated, and at the same time, the processing oil is filled in the void portion. The spiral groove 42 is engraved on the outer circumferential wall of the flywheel 7 so that the processing oil can be moved from the spiral groove 42 by the rotation of the flywheel 7. In the figure, 43 is an inlet for processing oil installed in the housing cover 38, and 44 is a bearing retaining ring.

In the above embodiment, the rotation shaft 35 rotates when the motor (not shown) is rotated to transmit the rotational force to the pulley 40, so that the die holder 13 also rotates in the direction of the arrow 45 in the seventh way. Thus, whenever the outer walls of the backers 10 and 10 come into contact with the hammer roll 11, the backers 10 and 10 are forcibly pressed in the direction of the arrows 46 and 46, and the dies 9 and 9 are pushed in the same direction. Pressurized to process the workpiece 47 into a product 47a having a predetermined outline.

In the above, when the flywheel 7 is rotated in the same direction as the rotation shaft 5, the spiral groove 42 provided on the outer wall of the flywheel 7 causes the processing oil in the lumen 41 of the housing to be depressed. Pressurized in the direction to flow.

In this case, since the flywheel 7 takes the same repulsive force as in the arrow 49, the flywheel 7 is always rotated under pressure in the direction of the arrow 49 and its rotational position is constant.

In addition, when the processing oil in the lumen 41 flows, the processing oil flows in from the inlet as shown in the arrow 50, and flows into the lumen 41 as described above, and then is discharged to the outside world. Since the discharged processing oil is again conveyed into the swaging housing 8 after filtration, cooling, or the like, the same precision can be maintained without changing the processing conditions even when it is operated for a long time.

In the above embodiment, the input using the pulley 40, but the motor shaft and the rotating shaft may be directly connected.

(Example 3)

An embodiment of the present invention will be described based on FIG. 1 and FIG.

The bush 2 of the flange 2a part is fitted to the shaft 1 of the motor 12, and is restrained by the key 17 in the rotational direction. The sun roller 3 is fitted to the outside of the bush 2, and the recesses 14 and 15 are equally spaced apart from the inner wall of the flange 2a and the end surface of the sun roller 3, respectively. And the steel balls 16 and 16 pass through the recesses 14 and 15, respectively.

The recesses 14 and 15 are set to form a part of a spherical surface having a larger diameter than the steel balls 16 and 16 (automatic pressure regulating mechanism). The outer wall of the sun roll 3 is formed on a data wall having a tip diameter smaller than the diameter of the proximal side (the flange side of the bush), and the inside of the plurality of planetary rolls 5 is formed on the outer wall of the sun roll 3. It is hypothesized to be pressed at equal intervals, and the outer side of the planetary roll (5) is in contact with the inner wall of the roller housing (6), the flywheel having the planetary roll (5) shaft is installed on the same center line as the motor (12) axis It is hypothesized (suspended) on the same circumference of one side of (7).

The die holder 13 of the die 9 is protrudingly installed in the center portion of the other side of the flywheel 7, and the die holder 13 is movably held at equal intervals or in the radial direction. The hammer roll 11 is hypothesized so as to face the outside of the die 9 through the backer 10. The hammer roll 11 is hypothetically movable between the inner wall of the swaging housing 8 and the backer 10.

In the figure, 18 and 19 are hammer roll frames, 20 are planetary roll frames, 21 are hammer roll covers, 22 are oil supply pipes, and 23 are oil pipes. The frames 18 and 19, the frame 20 and the flywheel 7 are fixed by bolts 4, respectively.

In the above embodiment, when the motor 12 is started, the shaft 1 rotates (for example, the direction of the arrow 24 in the second direction), so that the sun roller 3 also rotates in the same direction (arrow display 25). Accordingly, the planetary rolls 5 also rotate in the direction of the arrow 26.

Thus, the planetary roll 5 rotates on the inner wall surface 6a of the roller housing 6, and its axis moves in the direction of the arrow 27 so that the flywheel 7 also rotates in the same direction. Thus, since the die holder l3 rotates in the same direction (arrow display 28), the die 9 and the backer 10 also rotate in the same direction, and the hammer roller 11 in contact with the backer 10 also has an arrow ( 29) Rotate in the direction of (Fig. 4).

Therefore, the frame 19 of the hammer roller 11 also moves in the direction of the arrow 30. In this case, the bottom wall of the hammer roll 11 rotates on the inner wall 8a of the swaging housing 8 so that the frame 19 revolves in the direction of the arrow 30.

The outer circumferential wall of the flywheel 7 is engraved with a spiral groove 31, and the oil in the swaging housing 8 flows from the oil supply pipe 22 by the rotation of the flywheel 7 (32, 33). It flows in the direction of, 34, and is discharged from the drain pipe (23).

In this case, it is possible to clean oxides and other foreign substances generated during lubrication, cooling, and processing of each swaging part.

Moreover, since the flywheel 7 rotates in oil, noise is absorbed and it operates with comparatively little noise.

According to the present invention, the flywheel is hypothesized (without bearing) by the flywheel close to the die holder, so that the preloading of the hammerroll can be performed while preventing the warp caused by the flywheel. .

In addition, since the flywheel is accommodated in the housing and rotated at the processing flow rate, it is effective in reducing various vibrations of each part of the swaging device during processing and at the same time reducing noise.

In addition, since the flywheel can be stably rotated by forcibly moving the processing oil, there is an effect of preventing vibration of the flywheel itself and particularly suppressing fluctuations in the axial center direction as much as possible. In addition, the thermal expansion to the processing corners is made constant by forced movement, cooling, and cleaning of the processing oil, and the effects of foreign matters on the processing corners are supported to prevent the adverse effects on the processing precision.

The present invention is fixed to the drive motor centered on the center line of the machined part to connect the sun roller to the drive motor shaft through an automatic pressure adjustment means, and at the same time fly the shaft so that the planetary roller pressure-deceleration transmission on the outer side of the solar roller The wheel is installed on one side, and the die roller is continuously installed on the other side of the flywheel, and the die is radially installed on the die holder, and the hammer roll is interposed between the inner wall of the swaging housing through the backer. Since it is mounted on the motor shaft, the flywheel and the machining part can be installed relatively close to the drive motor shaft.

In addition, the flywheel has no bearing, and also operates in oil, so there is no noise, and there are various effects such that foreign matters generated during processing can be removed by oil circulation. In addition, since there is no bearing on the rotation angle part, the above-described configuration has various effects such as no occurrence of vibration, noise, or resonance caused by the bearing.

Claims (8)

In the swaging method of rotating the rotary shaft 35 having the die holder 13 together with the flywheel 7, the flywheel 7 is sealed in the fluid fluid in the swaging housing. Gathering method. 2. The high-precision swaging method according to claim 1, wherein a liquid is used as processing oil, and the processing oil is provided with a flow force in one direction by rotation of the flywheel (7). In a swaging device in which a rotational force input unit is connected to one side and a flywheel is installed on a rotational shaft provided with a processing unit on the other side, the flywheel 7 includes a die holder 13 and an input side bearing 39 of the rotational shaft. High-precision swaging device characterized in that it is hypothesized between and. In a swaging device in which a rotational force input means is connected to one side and a flywheel is installed on a rotational shaft provided with a processing means on the other side, the flywheel 7 includes a die holder 13 and an input side bearing 39 of a rotational shaft. A high-precision swaging device characterized in that it is hypothesized between and and enclosed during fluid flow sharing in the swaging housing (8). 5. The high-precision swaging device according to claim 4, wherein grooves (31,42) are provided on the outer surface of the flywheel (7) to impart a predetermined flow force to the processing oil. In the apparatus arranged to radially arrange a plurality of dice in the center of the machining portion, and rotates the hammer roller through the backer on the outside, and revolves, the drive motor 12 on the center line of the machining portion Is fixed to the shaft (l) of the drive motor (12) via the automatic pressure regulating means (14, 15, 16) to connect the sun roller (3) and at equal intervals on the outer periphery of the sun roller (3). The shaft is hypothesized on one side of the flywheel 7 on the same center line as the motor shaft 1 and the other of the flywheel 7 so as to press-contact the plurality of planetary rolls 5 to be decelerated. High-precision sway characterized in that the die holder 13 is continuously installed at the center of the side surface, and a hammer roller 11 is installed between the outer circumferential surface of the die holder 13 and the inner wall surface of the swaging housing 8. Gong device, 7. The automatic pressure adjusting means of the motor shaft (D) and the sun roll (3) and the planetary roll (5) restrains the rotational direction of the motor shaft (1) to fit the flange bush (2). And create a sun roller 3 in the flange bush 2 to create relief recesses 14 and 15 provided between the inner surface of the flange 2a and the proximal end surface of the sun roller 3. The steel balls 16 and 16 are loosely fitted and axially moved to the sun roll 3 by the rotation of the flange bush 2, and the outer wall of the sun roll 3 has a small tip side. High-precision swaging device, characterized in that formed in a taper of the diameter and the outer wall of the planetary roll (5) is formed in contact with the outer wall of the solar roll (3). 7. The flywheel (7) according to claim 6, characterized in that the flywheel (7) is rotatably supported by a planetary roll (5) which revolves between the outer wall of the solar roller (3) and the inner wall of the roller housing (8). High-precision swaging device.