JPH058311A - Gear-producing device - Google Patents

Abstract

PURPOSE:To improve the efficiency of production by carrying out continuously the process in which fiber is wound on a mandrel and the forming process in which the composite material on the mandrel is formed into tooth-shape. CONSTITUTION:The mandrel 4 winding up the fiber 2 which passes a resin tank 1 and to which prescribed resin amount is stuck, is rotatably provided. When the filament-winding member on the mandrel reaches at least prescribed thickness, a heated master gear 4 is pushed onto said filament-winding member by a spring 11 and is brought in contact therewith, and then in said state, the winding member is rotated, whereby tooth shape is formed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fiber reinforced composite material gear manufacturing apparatus.

[0002]

2. Description of the Related Art As a technical means for manufacturing a fiber-reinforced composite material gear, there is JP-A-53-32256.

[0003]

[Problems to be Solved by the Invention] In the means disclosed in the above publication, the manufacturing process is low because the transfer process of the master gear is independent. Further, although the fiber once wound in the transfer step is heated by a heater at another place to press the master gear, the molding performance is deteriorated.

[0004]

The present invention provides a gear manufacturing apparatus capable of improving the efficiency of the manufacturing process and the transfer, and has taken the following technical means. That is,
A mandrel 3 for winding the fiber 2 that has passed through the resin tank 1 is rotatably provided and is pressed directly or indirectly when the fiber 2 on the mandrel reaches a predetermined layer thickness. A gear manufacturing apparatus is provided in which the master gear 4 is provided so as to be rotatable and distantly movable with respect to the mandrel 3.

[0005]

When the rotating parts are driven and the heating part is heated, the mandrel 3 rotates and winds the fiber 2 passing through the resin tank 1. Then, when the fiber layer reaches a predetermined layer thickness, the heated master gear 4 rotates in a contact state.
Further, as the layer thickness increases, the master gear 4 moves toward the side away from the mandrel 3 while pressing the fiber 2. Then, while performing this operation, the tooth profile is formed on the fiber layer side.

[0006]

[Effect] Since the process of winding the fiber 2 around the mandrel 3 and the forming process can be continuously performed, the production efficiency can be improved and the forming performance can be improved.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, the structure thereof will be described. The fiber 2 as a reinforcing material is a carbon fiber and is wound around a bobbin 5 rotatably provided so as to have a predetermined thickness. The resin tank 1 has a ring body 6 rotatably provided at a predetermined interval in the lateral direction (fiber moving direction), and stores a quantity of resin 7 in which the ring body 6 is dipped. And 8 is a resin tank 1
Is a ring body rotatably provided above the entrance side of the. Also,
Above the outlet side of the resin tank 1, there is provided an adjusting wheel 9 which is rotatably provided in the vicinity thereof. The amount of resin attached to the fibers 2 can be adjusted by adjusting the gap of the adjusting wheel 9.

The mandrel 3 is rotatably provided by a driving means such as a motor, and winds the fiber 2 which has passed through the resin tank 1. The master gear 4 has an axis in the same direction as the mandrel 3 and is provided on the frame 10 so as to be rotatable and movable in the vertical direction. The master gear 4 is constantly pressed to the mandrel side by a spring 11 and has a release agent such as Teflon (trade name) applied to its outer surface.

Reference numeral 12 denotes an enclosure that surrounds at least the lower half of the master gear 4, and is a heater 1 for heating the master gear 4.
3 is provided. Although heating is performed indirectly in this embodiment, a heater may be provided in the master gear to directly heat the gear. The master gear 4 is located at the uppermost position in the initial stage of the work, and then comes into contact with the fibers 2 when the fiber layer wound around the mandrel 3 reaches a predetermined layer thickness.

Next, the operation will be described. First, the fiber 2 of the bobbin 5 is wound around the wheel 8 and then the resin tank 1 is wound.
Of the mandrel 3 by immersing it in the resin 7 and winding it around the lower surface of each wheel 6 and passing through the adjusting wheel 9 provided above the exit side.
Wrap around. Next, the mandrel 3 is rotated to energize the heater 13. Then, the resin 2 is attached to the fiber 2 in the resin tank 1, and then the amount of the attached resin is adjusted to a substantially constant amount by the adjusting wheel 9 and the filament 2 is wound around the mandrel 3.
The winding material A is molded. When the fiber layer as the filament winding material A reaches a predetermined thickness or more, the master gear 4 is brought into contact with the master gear 4 and then the master gear 4 is moved to the spring 1.
Rotate while pressing it with a certain pressure such as 1. In this case, the filament winding material A is in an uncured state in the initial stage, but after contact with the master gear 4, it is formed in a semi-cured state to a final shape.

Then, the mandrel 3 having the filament winding material A having a tooth profile formed on the outer surface is removed from the mounting portion, put into a mold, and then cured by heating in an electric furnace. After that, by molding and cutting a rod-shaped composite material having a gear cross section into a predetermined length, a composite material gear can be obtained. In addition,
Items other than gears such as screws can be manufactured by changing the master tooth profile.

As described above, since the step of winding the fiber 2 and the step of forming the tooth profile can be continuously performed, the manufacturing process can be rationalized and the work efficiency can be improved. 5 and 6 will be described. Conventionally, the technique of manufacturing a simple mold is a manual work that cannot be stably manufactured unless a person takes time to master it. Therefore, it is possible to arbitrarily select the manufacturing method of the vacuum casting mold, the resin simple mold, the metal simple mold, and the thermal spraying simple mold, and the articulated robot can be installed in the chamber where the temperature and pressure are automatically controlled. A simple and complex manufacturing device is constructed so that the main steps of each manufacturing method can be automatically and stably repeated.

This makes it possible to easily manufacture a metal simple mold using thermal spraying in addition to the conventional composite simple mold manufacturing method. Moreover, since the inside of the chamber can be depressurized, the so-called depressurized plasma method can be used, and the distance to the work can be freely set, and the workability can be improved. Further, the mixing, stirring, defoaming, casting, and curing of the resin in the backup of the subsequent process can be automatically performed continuously by controlling the atmospheric pressure and temperature in the chamber and handling by a robot.

[Brief description of drawings]

FIG. 1 is an external view showing a manufacturing process of a gear.

FIG. 2 is a front view of a mandrel having a toothed filament winding material.

FIG. 3 is a side view of a mandrel having a toothed filament winding material.

FIG. 4 is a front cross-sectional view of a tooth portion of a partially cut gear.

FIG. 5 is an explanatory diagram showing a mold making process.

FIG. 6 is an explanatory diagram of a simplified manufacturing apparatus using an articulated robot.

[Explanation of symbols]

 1 Resin tank 2 Fiber 3 Mandrel 4 Master gear

Claims (1)

Claim: What is claimed is: 1. A mandrel 3 for winding a fiber 2 that has passed through a resin tank 1 is rotatably provided and is heated directly or indirectly, and the fiber 2 on the mandrel has a predetermined layer thickness. A gear manufacturing apparatus comprising a master gear 4 which presses the fibers 2 when the temperature reaches a predetermined value so that the master gear 4 can rotate and move in the distance with respect to the mandrel 3.