JPH0569073A - Form rolling device - Google Patents

Abstract

PURPOSE:To make the outer circumference of a mate rolled material able to divide by the integral value with the pitch of the teeth of the form rolling tool, to obtain the form rolled surface of fine finishing surface and to present the form rolling device for the above by adjusting and controlling the rotating velocity of the form rolling tool against the various kinds of the outer diameter of the mate material, even if the form rolling tool of the same specification is used. CONSTITUTION:On the form rolling device that a form rolling tool (1) is engaged to a supporting part (3) with a pin (2) in freely rotationable, this form rolling tool (1) is rotated by utilizing the rotary force of a mate rolled material (7), and the form rolling tool (1) is pushed on this mate rolled material (7), the form rolling work is executed on an outer circumferential part of the mate rolled material (7), the feature is so that the rotation velocity of the form rolling tool (1) can be adjusted by utilizing a restoring force, etc., of a spring (5) from the side surface side of the form rolling tool (1), adding a pushing force through a sliding member (4), and adjusting this pushing force.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention, in rolling processing called knurling, which is performed to prevent slipping and improve aesthetics, rotates a rolling tool in order to obtain a cleaner finished surface. The present invention relates to a rolling device to which a mechanism for suppressing and controlling is added.

[0002]

2. Description of the Related Art Conventionally, in order to obtain a clean finished surface, the outer circumference of the mating work material is divided by an integer value by the tooth tip pitch of the rolling tool so that it can be rolled according to the outer diameter of the mating work material. I designed and manufactured the outer diameter and the tip pitch of the manufacturing tool. A perspective view of the conventional rolling device is shown in FIG.

[0003]

However, this has the following drawbacks. (A) The outer diameter of the part to be rolled is various,
It was disadvantageous and difficult to design and manufacture a rolling tool in accordance with them in terms of cost and delivery. (B) Therefore, rolling tools with the same specifications were used for mating workpieces of various outer diameters, and in many cases it was not possible to obtain a glossy and clean finished surface peculiar to rolling. The present invention has been made to solve these drawbacks.

[0004]

[Means for Solving the Problems] In order to obtain a clean rolling surface, it is necessary to divide the outer circumference of the mating workpiece by an integer value at the pitch of the tip of the rolling tool. By dividing by an integer value, the first groove carved at the tooth tip of the rolling tool and the tool tooth tip will be in agreement after one rotation, following the first machined groove. The rolling process will proceed. If it is not divided by an integer value, the groove carved at the tip of the rolling tool and the tip of the tool are
After one rotation, they do not match, the rolling process does not proceed uniformly, and a clean rolling surface cannot be obtained. As described above, in order to obtain a clean rolling surface, the outer circumference of the mating work material is designed to be divided by an integer value at the tooth tip pitch of the rolling tool. When the work material is forcibly rotated and the rolling tool is freely rotated to perform the rolling process, the rotation speed of the rolling tool is changed by the resistance generated in the sliding part of the rolling tool and its support. , In order to divide the outer diameter of the mating work piece by an integer value, the rotation speed of the mating work piece on the drive side becomes slower. I know I need to keep it. The present invention, based on this empirical knowledge, determines the rotation speed of the rolling tool as
By positively changing by changing the resistance force in the sliding part, a rolling tool with a constant tooth tip pitch can divide the outer circumference of the mating processed material of various outer diameters by an integer value to create a clean It aims to be able to obtain a rolled surface.

Therefore, as shown in FIG. 1, a sliding member (4) for rotatably pressing the rolling tool (1) from the side surface and a spring for generating the pressing force are applied to the conventional rolling device. An elastic member such as (5) and an adjusting screw (6) for adjusting the pressing force are added. When the pressing force is increased, the rolling tool (1) and the end face (21) of the support portion
And the frictional force between the end faces (41) of the sliding member (4) and the viscous resistance force generated by the interposition of lubricating oil, etc., and the rotational speed of the rolling tool (1) is the driving side. It becomes slower than the rotation speed of (7). Since the generated frictional force / viscous resistance force changes depending on the magnitude of the pressing force, the degree of delay in the rotation speed of the rolling tool (1) can be adjusted and controlled by the pressing force.

[0006]

[Operation] By increasing the pressing force to the side surface of the rolling tool (1), the rolling tool (1) and the end face portion (2) of the support portion are
The frictional force between 1) and the end surface of the sliding member (4) can be increased. Furthermore, the gap distance between the sliding parts also becomes smaller, and the viscous resistance value also becomes larger. For this reason,
The rotation speed of the rolling tool (1) is relatively slower than the rotation speed of the mating workpiece (7) on the drive side.
When the pressing force is zero, that is, when the rolling process is performed under the conventional conditions and the outer circumference of the mating processed material (7) cannot be divided by an integer value with the tooth tip pitch of the rolling tool (1), pressing By increasing the force and making the rotational speed of the rolling tool (1) relatively slower than the rotational speed of the mating workpiece (7), the tooth tip of the rolling tool (1) The pitch can be made apparently large, and the outer circumference of the mating workpiece (7) can be divided by an integer value by the tip pitch of the rolling tool (1). As described above, according to the rolling device of the present invention, even if the outer diameter dimension of the mating processed material (7) is various, a rolling tool having a constant outer diameter having the same tooth tip pitch is used, It is possible to obtain a beautiful rolled surface.

[0007]

EXAMPLE FIG. 1 shows an example in which the restoring force of a spring (5) is used as a means for generating a pressing force. The rolling tool (1) is rotatably engaged with the support portion (3) by a pin (2). A sliding member (4) for transmitting the pressing force generated by the restoring force of the spring (4) while sliding is disposed on the side surface of the rolling tool (1). The pressing force can be adjusted and set by the adjusting screw (6) which can freely adjust the compression length of the spring (5). The pressing force generated by the spring (5) is transmitted to the rolling tool (1) via the sliding member (4). By the pressing force, between the side surface (11) of the rolling tool (1) and the end surface (21) of the support portion, and between the other side surface (12) of the rolling tool (1) and the end surface of the sliding member (4).
Friction force is generated between 1). Further, during the rolling process, lubricating oil or the like is generally supplied for the purpose of lubrication and cooling, so that viscous resistance is also generated on the sliding surface. This viscous resistance becomes larger as the gap distance between the sliding surfaces becomes smaller. Therefore, when a pressing force is applied, the resistance also tends to become large. As mentioned above,
When the pressing force generated by the spring (5) is increased by the adjusting screw (6), the rotation speed of the rolling tool (1) is delayed relative to the rotation speed of the mating workpiece (7). Become. Although omitted in FIG. 1,
The mating processed material (7) is rotationally driven by a motor or the like. As the rotation speed of the rolling tool (1) slows down, the tooth tip pitch of the rolling tool (1) becomes the same as apparently larger than that of the mating workpiece (7), which is large. The outer circumference of the mating processed material (7) will be carved according to the tooth tip pitch dimension. Therefore, at the beginning, when rolling is performed with no pressing force, even if the outer circumference of the mating processed material (7) cannot be divided by an integer value by the tooth tip pitch, the pressing force can be adjusted by the adjusting screw (6). By increasing the apparent tooth tip pitch dimension by generating and adjusting the rolling tool (1), it can be divided by an integer value, and as a result, a clean finished surface can be obtained.

FIG. 3 shows an example in which a hydraulic device is used as a means for generating a pressing force. The hydraulic pressure introduced from a hydraulic pressure generator (not shown) generates a pressing force in the piston chamber (8). The generated pressing force is applied to the sliding member (4) via the pressing member (9) and to the side surface of the rolling tool (1). The pressing force can be adjusted by the pressure adjusting device (10). If the outer circumference of the mating workpiece cannot be divided by an integer value at the tip pitch of the rolling tool (1), an appropriate amount of pressing force is applied by the same idea as in the above-described embodiment using spring force. By adjusting the degree of delay of the rolling speed of the rolling tool (1) by generating it with the adjusting device (10), it can be divided by an integer value, and as a result, a clean finished surface can be obtained.

FIG. 4 shows an example in which a laminated ceramic actuator (20) is used as the pressing force generating means. Although the structure inside the actuator is not shown, the pressing force is adjusted by changing the applied voltage value. The pressing force generated by the multilayer ceramic actuator (20) is applied to the sliding member (4) via the pressing member (9) and to the side surface of the rolling tool (1). . In this embodiment, the applied voltage value is adjusted so that the outer circumference of the mating workpiece (7) is divided by an integer value depending on the tooth tip pitch of the rolling tool (1).

As described above, in the embodiment, (a) the restoring force of the elastic member such as the spring is used as the means for generating the pressing force. (B) Utilizing hydraulic pressure. (C) A device that uses the electrical properties of a piezoelectric ceramic element. However, in the present invention, other pressing force generating means can be applied as long as the generated force can be adjusted and controlled. Although the material of each member has not been specified so far, generally, the support portion (3), the rolling tool (1), and the pin (2) are made of steel. Considering seizure resistance and wear resistance, the material of the sliding member (4) is preferably non-ferrous metal such as aluminum alloy having relatively high hardness and copper alloy having self-lubricating property. Of course, an iron-based material may be used, and the sliding surface may be subjected to surface treatment having seizure resistance and wear resistance.

[0011]

EFFECTS OF THE INVENTION According to the rolling apparatus of the present invention, the rolling speed of the rolling tool can be adjusted and controlled for various outer diameters of the mating workpieces, so that the same rolling specifications can be obtained. Even if a tool is used, it is possible to divide the outer periphery of the mating processed material by an integer value at the tip pitch of the rolling tool, and to obtain a rolled surface with a clean finished surface.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention using a spring force as a means for generating a pressing force.

FIG. 2 is a perspective view of a conventional rolling device.

FIG. 3 is a sectional view of an embodiment of the present invention using a hydraulic device as a pressing force generating means.

FIG. 4 is a sectional view of an embodiment of the present invention using a laminated ceramic actuator as a pressing force generating means.

[Explanation of symbols]

 1 Rolling Tool 2 Pin 3 Supporting Part 4 Sliding Member 5 Spring 6 Adjustment Screw 7 Mating Work Material 8 Piston Chamber 9 Pressing Member 10 Pressure Adjusting Device 11, 12 Rolling Tool End Face 20 Multilayer Ceramic Actuator 21 Support End Face 41 End surface of sliding member

Claims (1)

[Claims] 1. A rolling tool (1) is rotatably engaged with a supporting portion (3) by a pin (2) or the like, and the rolling tool (1) is utilized by utilizing the rotational force of a mating workpiece (7). In a rolling device adapted to perform rolling processing on the mating material (7) by rotating the mating material (7) by pressing the rolling tool (1) on the mating material (7), The rotation speed of the rolling tool (1) can be suppressed and controlled so that an arbitrary rotation speed difference is generated between the mating processed material (7) and the rolling tool (1). Rolling device characterized by