JPH0618733U - Hydraulic fixed flange - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a hydraulic fixing flange that prevents deformation of the flange portion when fixed to the output shaft. [Structure] In the flange body 1, an annular hollow chamber 11 is formed between the outer peripheral surface 1b and the hydraulic chamber 2, and a partition 12 thicker than the partition 3 is formed between the hollow chamber 11 and the hydraulic chamber 2. Form. When the hydraulic oil F having a sufficiently high pressure is filled in the hydraulic chamber 2, the partition 3 swells in the hydraulic chamber 2 until the inner peripheral surface 1a is pressed against the rotating shaft 53, and the partition 12 swells in the hollow chamber 11. Let As a result, the partition wall 12 is deformed so that the flange body 1 is not deformed.
Does not affect the outside of the hollow chamber 11.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a hydraulic fixing flange that has a flange portion to which a rotary tool such as a milling blade or a rotary blade of a rotary shear device is fixed and that is fixed to an output shaft by hydraulic pressure.

[0002]

[Prior art]

 FIG. 3 is a side sectional view showing an example of a conventional hydraulic fixing flange, and FIG. 4 is an explanatory view of hydraulic operation in the hydraulic fixing flange shown in FIG.

Reference numeral 1 denotes an annular flange body made of, for example, special steel, 2 denotes an annular hydraulic chamber formed in the flange body 1 in parallel with the inner peripheral surface 1a, and 3 denotes an inner peripheral surface 1a and a hydraulic chamber 2. The partition wall 4 formed between the two is a flange portion to which the rotary tool 51 is fixed by the bolt 52.

As shown in FIG. 4, a communication hole 5 is formed in the flange body 1 in the radial direction, and the communication hole 5 communicates with the hydraulic chamber 2 and a screw hole 6 that opens on the outer peripheral surface. . A hose nipple 7 is screwed into the screw hole 6, a hydraulic hose (not shown) for supplying high-pressure hydraulic oil is connected to the hose nipple 7, and the hose nipple 7 is loosened to loosen the through hole of the hose nipple 7. High pressure hydraulic oil is filled in the hydraulic chamber 2 through the screw hole 6 and the communication hole 5, and the hose nipple 7 is tightened to seal the hydraulic chamber 2 and the communication passage 5. When the hydraulic chamber 2 is filled with high-pressure hydraulic oil, the hydraulic chamber 2 is deformed so as to expand due to the pressure of the hydraulic oil. At this time, the partition wall 3 which is relatively thin and has low strength on the peripheral wall of the hydraulic chamber 2 is elastically deformed as indicated by the two-dot chain line.

As shown in FIG. 3, the hydraulic chamber 2 is filled with high-pressure hydraulic oil in a state where the rotary shaft 53, which is an output shaft of a milling device or a rotary shear device, is inserted into the hollow portion of the flange body 1. In this case, since the partition wall 3 tries to swell, the inner peripheral surface 1a is pressed against the rotating shaft 53 with a force corresponding to the pressure of the hydraulic oil. At this time, the hydraulic fixing flange is fixed to the rotary shaft 53 by the frictional force generated between the inner peripheral surface 1a and the rotary shaft 53, and the rotary force of the rotary shaft 53 can be transmitted to the rotary tool 51. Becomes The rotary tool 51 to which the rotational force is transmitted cuts or cuts a processing material such as a metal material, for example.

[0006]

[Problems to be solved by the device]

 In the hydraulic fixed flange configured as described above, when trying to transmit a strong rotational force to the rotary tool 51, it is necessary to increase the pressure of the hydraulic oil in accordance with the rotational force. As described with reference to FIG. 4, when the inner peripheral surface 1a is not in pressure contact with the rotating shaft 53, the deformation of the flange main body 1 due to the pressure of the hydraulic oil occurs preferentially in the partition wall 3. However, as shown in the explanatory view of FIG. 5, when the inner peripheral surface 1a is brought into pressure contact with the rotary shaft 53 and the partition wall 3 is constrained in the bulging direction by the rotary shaft 53, the deformation in the flange main body 1 is caused by the hydraulic chamber. 2 occurs in the thick partition wall 8 formed between the outer peripheral surface 1b of the flange body 1 and the outer peripheral surface 1b. Due to the deformation of the partition wall 8, the outer peripheral surface 1b is deformed so as to be curved, and the flange portion 4 is deformed so as to be inclined at an angle θ with respect to the plane orthogonal to the central axis L. As a result, the rotary tool 51 fixed to the flange portion 4 is also deformed, and the rotary tool 51 comes into contact with the work material (not shown) at an angle θ with respect to the working material. When the flange portion 4 is deformed in this way, it becomes difficult to accurately position the rotary tool 51 with respect to the work material, and the machining accuracy is lowered. Further, the rotary tool 51 tilts and abuts the work material. In this case, burrs may occur, or the machined surface may become rough, so that the surface quality of the machined material deteriorates, and the rotary tool 51 may be damaged in a short time.

An object of the present invention is to provide a hydraulic fixing flange in which the deformation of the flange portion is prevented when the output shaft is fixed in order to solve the above problems.

[0008]

[Means for Solving the Problems]

 In order to solve the above problems, the present invention provides an annular flange main body, a hydraulic chamber provided along the inner peripheral surface in the flange main body, the hydraulic chamber and the inner peripheral surface of the flange main body. An inner partition wall formed between the inner partition wall and a surface of the flange body, and a flange portion formed on the outer peripheral surface of the flange body. In the hydraulic pressure fixing flange in which the inner peripheral surface of the flange body is in pressure contact with the outer peripheral surface of the output shaft of the device, a hollow chamber is provided between the hydraulic chamber and the flange portion, and when the hydraulic chamber is filled with high-pressure hydraulic oil, The outer partition wall formed between the hydraulic chamber and the hollow chamber is configured to bulge into the hollow chamber. Further, the outer partition wall is thicker than the inner partition wall in the radial direction of the flange body.

[0009]

[Action]

 According to the above means, in the flange main body, a hollow chamber is provided between the hydraulic chamber and the flange portion, and when the outer partition wall formed between the hydraulic chamber and the hollow chamber fixes the hollow shaft to the output shaft. When the hydraulic chamber is filled with high-pressure hydraulic oil, the outer partition wall bulges into the hollow chamber. Furthermore, since the outer partition wall is thicker than the inner partition wall, when the hydraulic chamber is filled with high-pressure hydraulic oil, the inner partition wall swells preferentially.

[0010]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. 1 and 2, the members corresponding to the members described with reference to FIGS. 3 to 5 are denoted by the same reference numerals and the description thereof will be omitted.

FIG. 2 is a side sectional view showing a schematic configuration of a hydraulic fixing flange according to an embodiment of the present invention, and FIG. 1 is an explanatory view of a first embodiment fixed to a rotary shaft.

In the flange body 1, an annular hollow chamber 11 is formed between the outer peripheral surface 1b and the hydraulic chamber 2, and a partition 12 thicker than the partition 3 is formed between the hollow chamber 11 and the hydraulic chamber 2. Form.

When the hydraulic fixing flange is fixed to the rotary shaft 53, the hydraulic chamber 2 is filled with the high-pressure hydraulic oil F, so that the hydraulic chamber 2 expands in response to the pressure of the hydraulic oil F within the allowable pressure range. Then, the flange body 1 is deformed. At this time, since the partition wall 3 is thinner than the partition wall 12, it preferentially swells so that the inner peripheral surface 1a is pressed against the rotating shaft 53 and the inner peripheral surface 1a is pressed against the rotating shaft 53, so that the partition wall 3 cannot be expanded. Deformation is limited. When hydraulic oil F having a sufficiently high pressure is filled in hydraulic chamber 2 in order to transmit a strong rotational force, hydraulic chamber 2 bulges partition wall 3 until inner peripheral surface 1a presses against rotation shaft 53, and the partition wall 3 is further expanded. Inflate 12 The bulging partition wall 12 bends the inner peripheral surface of the hollow chamber 11 in the annular hollow chamber 11 as shown in FIG. Here, the radial thickness of the hollow chamber 11 is set so that the inner peripheral surface of the hollow chamber 11 does not contact the outer peripheral surface when the bulging amount of the partition wall 12 is maximized. As a result, the deformation of the partition wall 12 does not affect the outside of the hollow chamber 11 in the flange body 1. Therefore, the outer peripheral surface 1b of the flange body 1 and the flange portion 4 can be prevented from being deformed.

According to the hydraulic fixing flange of the present embodiment, the deformation of the rotary tool 51 can be prevented by preventing the deformation of the flange portion 4, and as a result, the rotary tool 5 can be applied to the work material.
1 can be positioned with high precision and the tilting of the rotary tool 51 can be prevented, so that the machined surface of the machining material can be machined with high quality and the life of the rotary tool 51 can be prevented from being shortened.

[0015]

[Effect of device]

 As described above, according to the present invention, in the flange body, the hollow chamber is provided between the hydraulic chamber and the flange portion, and the outer partition wall formed between the hydraulic chamber and the hollow chamber is used. When the hydraulic chamber is filled with high-pressure hydraulic oil when it is fixed to the output shaft, the outer partition wall bulges into the hollow chamber to prevent deformation of the flange portion outside the hollow chamber. The deformation and tilt of the rotary tool fixed to the can be prevented, and the outer partition wall is thicker than the inner partition wall.When the hydraulic chamber is filled with high-pressure hydraulic oil, the inner partition wall swells preferentially. The pressure of can be efficiently converted into the crimping force for the output shaft.

[Brief description of drawings]

FIG. 1 is an explanatory view of a hydraulic fixing flange according to an embodiment of the present invention when being fixed to a rotary shaft.

FIG. 2 is a side sectional view showing a schematic configuration of the present embodiment.

FIG. 3 is a side sectional view showing an example of a conventional hydraulic fixing flange.

FIG. 4 is an explanatory view of a hydraulic operation of the hydraulic fixing flange shown in FIG.

FIG. 5 is an explanatory diagram when the hydraulic fixing flange shown in FIG. 3 is fixed to a rotating shaft.

[Explanation of symbols]

1 ... Flange body, 2 ... Hydraulic chamber, 3 ... Partition wall, 4 ...
Flange portion, 11 ... Hollow chamber, 12 ... Partition wall, 51 ... Rotating tool, 53 ... Rotating shaft, F ... Hydraulic fluid.

Claims (2)

[Scope of utility model registration request] 1. A flange main body formed in an annular shape, and a hydraulic chamber provided along the inner peripheral surface in the flange main body,
An inner partition wall formed between the hydraulic chamber and the inner peripheral surface of the flange main body, and a flange portion formed on the outer peripheral surface of the flange main body, the hydraulic chamber is filled with high-pressure hydraulic oil, and In the hydraulic fixed flange in which the inner partition wall is bulged and the inner peripheral surface of the flange body is in pressure contact with the outer peripheral surface of the output shaft of the external device, a hollow chamber is provided between the hydraulic chamber and the flange portion, and high pressure hydraulic oil is provided in the hydraulic chamber. A hydraulic fixing flange, wherein an outer partition wall formed between the hydraulic chamber and the hollow chamber is configured to bulge into the hollow chamber when filled. 2. The hydraulic fixing flange according to claim 1, wherein the outer partition wall is thicker than the inner partition wall in a radial direction of the flange body.