JP3092108B2 - Rolling equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rolling device having a position adjusting mechanism for adjusting a relative position of a pair of rolling portions such as a blade. This device can be used for rolling high precision circular gears and serrations.

[0002]

2. Description of the Related Art As a rolling device provided with a pair of cutting tools, as shown in FIG. 2, a first hydraulic cylinder 100, a first slide unit 102 fixed to a cylinder rod 101 of the first hydraulic cylinder 100, and First slide unit 102
Cutting tool 103 held by the second hydraulic cylinder 20
0, a second slide unit 202 fixed to the cylinder rod 201 of the second hydraulic cylinder 200, and a second cutting tool 203 held by the second slide unit 202 are known. In this device, the first cylinder 1
00 to drive the first slide unit 102 and the first slide unit 102.
The blade 103 is moved in the direction of arrow A1, and at the same time, the second cylinder 200 is driven to move the second slide unit 2
02 and the second cutting tool 203 are moved in the direction of the arrow A2, thereby bringing the first cutting tool 103 and the second cutting tool 203 closer together in synchronization with each other, and the processing surface 103a of the first cutting tool 103 and the processing surface 203a of the second cutting tool 203. The roll work is performed on the work by sandwiching the round bar-shaped work W with. In this case, as can be understood from FIG. 3, between the first slide unit 102 and the second slide unit 202, the racks 102f, 20
A synchronous gear mechanism composed of 2f and the pinion 400 is provided on the rear side of the rolled portion so as to overlap. However, fine adjustment of synchronization was not easy with this synchronous gear mechanism alone.

In order to improve the precision of the rolling process and obtain a high quality rolled product, the first cutting tool 103 and the second cutting tool 203 are required.
Position requires stricter accuracy. Therefore, FIG.
As shown in FIG.
00, 301 are provided, and the stoppers 300, 3
01 and blades 103, 203, shims 400, 401
Is inserted, and the thickness of the shims 400 and 401 is appropriately adjusted, so that the cutting tool 10 in the directions of arrows A1 and A2 can be obtained.
The positions of 3, 203 are finely adjusted. In such position adjustment work, the shims 400, 401
Has to be adjusted, and the adjustment work is not easy.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to adjust the relative position of a pair of rolled parts such as blades by using a method different from the method using a shim. And to provide a rolling device that is advantageous for obtaining high-quality rolled products.

[0005]

SUMMARY OF THE INVENTION A rolling device according to the present invention is provided with a driving motor for rotating a driving helical gear, a first driven helical gear driven and rotated by the driving helical gear, and coaxially held by the first driven helical gear. First
A first rolling device including a screw shaft, a first rolling unit that moves in the axial direction of the first screw shaft along with the rotation of the first screw shaft to form a workpiece, and driven by a driving helical gear. A second driven helical gear, a second screw shaft coaxially held by the second driven helical gear, and an axial direction of the second screw shaft in synchronization with the first rolled portion with the rotation of the second screw shaft. And the first
A second rolling device provided with a second rolling unit for rolling the workpiece by moving in the opposite direction to the rolling unit, and a first driven helical gear of the first rolling device and a second rolling device of the second rolling device. (2) at least one of the driven helical gears includes a key engaging portion that holds the one driven helical gear so as to be position-adjustable along the axial direction of the screw shaft and that rotates the one driven helical gear integrally with the screw shaft; A fixing portion for fixing the driven helical gear to the screw shaft so as to be position-adjustable, and a position adjustment for adjusting a relative position of the first rolled portion and the second rolled portion along with the position adjustment of the one driven helical gear in the axial direction. It is characterized by having a mechanism.

[0006] The rolled portion is a portion where the work is rolled, and a cutting tool or a die can be employed.

[0007]

When the drive motor is driven, the first driven helical gear and the second driven helical gear are driven to rotate. Thereby, the first screw shaft and the second screw shaft rotate, the first rolled portion moves in the axial direction of the first screw shaft, and the second rolled portion moves in the opposite direction to the axial direction of the second screw shaft. As a result, the first rolled portion and the second rolled portion approach each other, the work is sandwiched between the first rolled portion and the second rolled portion, and the work is rolled.

When adjusting the position of the rolled portion, the fixed portion of the position adjusting mechanism is loosened or removed, and the driven helical gear fixed by the fixed portion is pressed to move in the axial direction of the screw shaft. Move. Then, the driven helical gear rotates, and the screw shaft connected to the driven helical gear rotates integrally, whereby the position of the rolled portion is adjusted in the axial direction of the screw shaft.

[0009]

An embodiment of the present invention will be described with reference to FIG.
As shown in FIG. 1, a drive motor 1 is fixed to a housing 2. A drive helical gear 3 is coaxially mounted on a motor shaft 1 a of the drive motor 1 via a coupling 4. Further, the first driven helical gear 5 is
And is rotatably held via a bearing 2 c and meshes with the drive helical gear 3. A first screw shaft 6 is connected to the first driven helical gear 5 so as to rotate integrally therewith. First
The screw portion 6a of the screw shaft 6 and the screw portion of the screw hole 7a of the first holding base 7 are screwed. In addition, the first holding table 7 is not allowed to rotate. Therefore, when the first screw shaft 6 rotates,
The first holding table 7 slides along the axial direction. First
The holding table 7 holds a first cutting tool 7w as a first rolled portion.

The helical idle gear 8 is rotatably held by the housing 2 via a bearing 2 d and meshes with the drive helical gear 3. Further, the second screw shaft 16 is rotatably held by the housing 2 via a bearing 2e, and the screw portion 16a of the second screw shaft 16 and the screw portion of the screw hole 17a of the second holding base 17 are screwed together. ing. Also, the second holding table 17
Is not allowed to rotate. Therefore, the second screw shaft 16
Is rotated, the second holding table 17 slides in the axial direction. The second holding table 17 holds a second cutting tool 17w as a second rolled portion.

At the tip of the second screw shaft 16, an end shaft portion 16i having no screw portion is extended. A holding hole 15 of the second driven helical gear 15 is formed in the end shaft portion 16i.
k is fitted. Inner circumference and end shaft 1 of holding hole 15k
6i, a key 20 as a key engaging portion
The second driven helical gear 15 is slidable along the key 20 at the end shaft portion 16i. Furthermore, the screw hole 16h of the end shaft portion 16i of the second screw shaft 16
Is screwed with a bolt shaft 21 as a fixing portion.
The bolt shaft 21 has a flange 21t. This bolt shaft 2
1 is a hole 15 in the bottom wall 15n of the second driven helical gear 15.
x. Then, the bottom wall 15n of the second driven helical gear 15 is sandwiched between the mounting nut 25 and the flange 21t by screwing the mounting nut 25 as a fixing portion to the bolt shaft 21, whereby the second driven helical gear 15 The second screw shaft 16 is fixed to an end shaft portion 16i.

In this embodiment, the first driven helical gear 5, the first screw shaft 6, the first holding table 7, and the first blade 7w
A rolling device 50 is configured. The second driven helical gear 15, the second screw shaft 16, the second holding table 17, the second
The second rolling device 60 is constituted by the blade 17w.
Further, a position adjusting mechanism 70 is configured by the bolt shaft 21 and the mounting nut 25.

When using the apparatus, when the drive motor 1 which is a common drive source is driven, the first driven helical gear 5 is driven to rotate via the coupling 4. Similarly, through the helical idle gear 8, the second driven helical gear 1
5 is driven to rotate. As a result, the first screw shaft 6 and the second screw shaft 16 rotate in directions opposite to each other, and the first holding table 7
Arrow B1 along the axial direction of the first screw shaft 6 together with the blade 7w
Move in the direction. Also, the second holding table 17 is the second cutting tool 17.
With w, it moves in the direction of arrow B2 along the axial direction of the second screw shaft 16. Thereby, the first blade 7w and the second blade 17
w approach each other, the round bar-shaped workpiece W is sandwiched between the first blade 7w and the second blade 17w, and the first blade 7w and the second blade 1
7w, the work W is rolled.

By the way, the first blade 7w and the second blade 17w
When adjusting the position, follow the steps below. That is, the distance L1 from the center of the work W to the first cutting tool 7w and the distance L2 from the center of the work W to the second cutting tool 17w are measured. If there is a difference, the mounting nut 25 is loosened.
If necessary, the bolt shaft 21 is also turned. In this state, the second driven helical gear 15 is pressed by manual operation or by using a hydraulic mechanism, for example, in the direction of arrow B1 or arrow B2.
Slide a small amount in the direction. Then, according to the amount,
While meshing with the helical idle gear 8, the second driven helical gear 15 rotates a minute amount, and therefore the second screw shaft 16 also rotates a minute amount, whereby the second holding table 17 and the second cutting tool 17w
Slides a small amount in the direction of arrow B1 or in the direction of arrow B2. Therefore, the second cutting tool 17w in the directions of the arrows B1 and B2.
Is finely adjusted, and the phases of the second blade 17w and the first blade 7w can be accurately matched. After the adjustment, the mounting nut 25 is tightened.

As described above, in the present embodiment, fine adjustment of the position of the second blade 17w is performed, and the phases can be accurately matched, so that the accuracy of the rolling process when rolling the work W can be ensured. This is advantageous for obtaining high quality rolled products. Such fine adjustment of the position of the second cutting tool 17w can be performed even when the cutting tools 7w and 17w are attached at an initial stage or when the cutting tool 7w is mounted.
error in the manufacture of w, 17w, or blade tools 7w, 17
The present invention can be implemented even when a phase shift occurs due to the wear of w.

The above-mentioned adjustment work is performed by the second screw shaft 16.
Is performed on the end shaft portion 16i side, which is the tip of the cutting tool 17w, which is directly rolled and is contaminated with cutting chips or cutting oil.
It can be done away from nearby. Therefore, the adjustment work is facilitated,
It is also advantageous in terms of safety. (Other Examples) In addition, the device of the present invention is not limited to the embodiment described above and shown in the drawings, but may be appropriately modified as necessary without departing from the scope of the invention. is there.

[0017]

According to the apparatus of the present invention, the position of at least one of the first rolled portion and the second rolled portion can be adjusted without using a shim, and the first rolled portion and the second rolled portion can be adjusted. Since the phases of the parts can be accurately matched, the accuracy of the rolling process can be ensured, and a high-quality rolled product can be obtained.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a rolling device according to an embodiment.

FIG. 2 is a configuration diagram showing a rolling device according to a conventional example.

FIG. 3 is a configuration diagram of a synchronization mechanism of a rolling device according to a conventional example.

[Explanation of symbols]

In the drawing, 1 is a drive motor, 2 is a housing, 3 is a drive helical gear, 6 is a first screw shaft, 7w is a first cutting tool, and 5 is a first cutter.
Driven helical gear, 15 is a second driven helical gear, 16
Is a second screw shaft, 17 is a second holding table, 17w is a second cutting tool,
21 is a bolt shaft, 25 is a mounting nut, 50 is a first rolling device, 60 is a second rolling device, and 70 is a position adjusting mechanism.

Claims (1)

(57) [Claims] 1. A driving motor for rotating a driving helical gear, a first driven helical gear driven and rotated by the driving helical gear, a first screw shaft coaxially held by the first driven helical gear, and rotation of the first screw shaft. A first rolling device having a first rolling portion for rolling the workpiece by moving in the axial direction of the first screw shaft, a second driven helical gear driven and rotated by a driving helical gear, and a second driven helical gear. A second screw shaft coaxially held by the driven helical gear; and, in rotation with the second screw shaft, in synchronization with the first rolled portion, in the axial direction of the second screw shaft and opposite to the first rolled portion. A second rolling device including a second rolling unit that rolls a workpiece by moving in a direction, and at least a first driven helical gear of the first rolling device and a second driven helical gear of the second rolling device. One is the one driven helical gear A key engagement portion for holding the one driven helical gear integrally with the screw shaft and holding the one driven helical gear integrally with the screw shaft, and fixing the one driven helical gear to the screw shaft so as to be position adjustable along the axial direction of the same shaft. A rolling device, comprising a fixed portion, and a position adjusting mechanism for adjusting a relative position of the first and second rolling portions in accordance with a position adjustment of the one driven helical gear in the axial direction.