JPH0572301U - Fixed shaft member cutting device - Google Patents

Abstract

(57) [Abstract] [Purpose] To accurately and easily cut a shaft member even if the member to be cut is a fixed shaft member having a relatively small diameter such as a leveler roller shaft or the installation space is small. It is an object of the present invention to provide a cutting device capable of cutting. [Structure] A cylindrical tool mounting body 12 to which a cutting tool 18 is mounted and a shaft member 2 which is a fixed member to be cut are detachably mounted, and the tool mounting body 12 is rotatable around an axis of the shaft member 2. And a holding mechanism 11 that holds the movable body in the axial direction, a drive mechanism 13 that is attached to the holding mechanism 11, and drives the tool mounting body 12 to rotate while allowing the tool mounting body 12 to move in the axial direction, and is attached to the holding mechanism 11. A feed operation mechanism 14 for moving the tool mounting body 12 in the axial direction,
It is equipped with.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting device for cutting a shaft member having a relatively small diameter such as a leveler roller shaft protruding from a machine frame in a fixed state.

[0002]

[Prior Art]

 For example, as shown in FIG. 7 (A), in a leveler in which an H-shaped steel 3 is sandwiched and transferred by a pair of upper and lower rollers 1, 1, the roller contact surface 2 a of each roller shaft 2 is worn and damaged. In this case, as shown in FIG. 6B, the contact surface 2a is cut, and the collar 5 is shrink-fitted to the cut portion 2b to repair the contact surface 2a.

In the cutting of the roller shaft 2 as described above, the roller shaft 2 is fixed to the leveler machine frame 4 in a protruding manner, and it is necessary to rotate the member to be cut 2 like a lathe. Since it cannot be done with a cutting device, it is generally done with a horizontal boring machine.

That is, a face plate is attached to the main shaft of a horizontal boring machine, and a cutting tool attached to an appropriate position of the face plate is rotated around the roller shaft 2 to cut the contact surface 2a. There is.

[0005]

[Problems to be solved by the device]

 However, in the horizontal boring machine, a large face plate is rotated even when cutting a shaft member having a relatively small diameter such as the roller shaft 2, so that the cutting accuracy is low and it is difficult to properly repair the contact face 2a. Moreover, since the horizontal boring machine requires a large installation space, it cannot be used when the peripheral space of the shaft member 2 is small, and the cutting work becomes large.

The present invention has been made in view of the above-mentioned problems, and even when the member to be cut is a fixed shaft member having a relatively small diameter such as a leveler roller shaft, or when the installation space is small, the shaft is small. An object of the present invention is to provide a cutting device capable of cutting a member with high accuracy and easily.

[0007]

[Means for Solving the Problems]

 The cutting device of the present invention, which solves this problem, is detachably attached to a cylindrical tool mounting body to which a cutting tool is mounted and a fixed shaft member which is a member to be cut, and the tool mounting body is attached to the shaft line of the shaft member. A holding mechanism that holds the tool so that it can rotate around and that can move in the axial direction, a drive mechanism that is attached to the holding mechanism, that drives the tool mounting body to rotate while allowing the tool to move in the axial direction, and a holding mechanism. And a feed operation mechanism for moving the tool attachment body in the axial direction.

[0008]

[Action]

 When cutting the shaft member, it is necessary to first install the device. Such an installation is performed by attaching the holding mechanism to the shaft member. Since the entire device is mounted on the shaft member in this way, a large installation space around the shaft member is not required.

Then, when the tool attachment body is rotationally driven and moved in the axial direction by the feed operation mechanism, the shaft member can be cut by the cutting tool attached to the tool attachment body. Such a cutting process is performed with high accuracy, unlike the case of using a horizontal boring machine for attaching a cutting tool to a large face board.

[0010]

【Example】

 Hereinafter, the configuration of the present invention will be specifically described based on the embodiments shown in FIGS.

This embodiment relates to an example in which the present invention is applied to a cutting device used for cutting and repairing the roller contact surface 2a of the leveler roller shaft 2, as shown in FIG. In the following description, front and rear mean left and right in FIG. 1, and left and right mean left and right in FIG.

That is, as shown in FIGS. 1 to 4, the cutting device of this embodiment has a holding mechanism 11 that is removably attached to the roller shaft 2, and is rotatable by a holding mechanism 11 on a fixed shaft member and has an axis line. The tool mounting body 12 is inserted and held so as to be movable in the direction, a driving mechanism 13 for rotationally driving the tool mounting body 12, and a feed operation mechanism 14 for moving the tool mounting body 12 in the axial direction.

As shown in FIGS. 1 to 3, the holding mechanism 11 includes a cylindrical holding body 16 concentrically fitted and fixed to the roller supporting portion 2c of the roller shaft 2 by a plurality of fixing bolts 15. Legs 17, 17 attached to the outer peripheral surface of the body 16 are provided. The legs 17, 17 are fixed to the work floor to prevent the holder 16 from rotating.

As shown in FIGS. 1 to 4, the tool mounting body 12 has a cylindrical shape with a cutting tool 18 attached to the front end thereof, and is fitted onto the holding body 16 so as to be rotatable and axially slidable. I have it. The cutting tool 18 is mounted at an optimum position for cutting the roller contact surface 2a in the radial direction of the tool mounting body 12.

As shown in FIGS. 1 to 3, the drive mechanism 13 is an electric motor 20 that is fixedly supported at the rear end of the holder 16 via a bracket 19 and is directly connected to the output shaft of the motor 20 and held. A spline shaft 21 extending in the axial direction of the body 16, a small-diameter drive gear 22 fitted and supported by the spline shaft 21 so as to be movable in the axial direction and non-rotatable relative to each other, and concentric with the rear end portion of the tool mounting body 12. And a driven gear 23 having a large diameter that meshes with the drive gear 22 and is driven by the motor 20 to rotate about the axis of the roller shaft 2.

As shown in FIGS. 1 to 4, the feed operation mechanism 14 includes an upper first engagement groove 24 and a pair of left and right second engagement grooves 25 formed on the peripheral surface of the holder 16 and extending in the axial direction. , 25, and a first slider 26 and a second slider 27, 27 having screw holes 26a, 27a penetrating in the axial direction, which are slidably engaged in the engaging grooves 24, 25 and held, respectively. The brackets 28 and 29 fixed to the rear end of the holder 16 are rotatably and immovably supported in the axial direction, and are relatively screwed into the screw holes 26a and 27a of the sliders 26 and 27, respectively. The first screw shaft 30 and the second screw shaft 31, 31, which are fixed to each other, the endless chain 33 wound around the sprocket wheel 32 ... First feed operation body 34 And a second feed operation body 35, 35. An operating handle 36 is attached to each second screw shaft 31, and when one handle 36 is rotated, the screw shafts 30 and 31 are interlocked with each other via the chain transmission means 32, ... The 26, 27 and 27 can be screwed in the same direction by the same amount. The first feed operation body 34 engages the drive gear 22, and each second feed operation body 35 engages and holds the driven gear 23 in the front-rear direction. Thus, the tool mounting body 12 is moved forward and backward while the gears 22 and 23 are in mesh with each other.

Therefore, by driving the motor 20 and operating one of the handles 36, the cutting tool 18 can be rotated and moved to the left, and the contact surface 2 a of the roller shaft 2 can be satisfactorily and easily. Can be cut into.

The present invention is not limited to the above-mentioned embodiments, and can be appropriately improved and modified within a range not departing from the basic idea of the present invention.

For example, in the holding mechanism 11, when there is no portion (roller support portion 2c) in which the holding body 16 can be fitted and fixed to the shaft to be cut 2, a screw hole portion or a screw shaft portion is provided at the shaft end. When formed, the shaft end portion can be used to be attached to the shaft 2 to be cut.

That is, in the embodiment shown in FIGS. 5 and 6, the holding mechanism 11 includes a shaft-shaped holding body 16 having a screw shaft portion 16a formed at a front end thereof, and a holding body 16 slidably fitted in the axial direction. A case 41 inserted and held, and a thrust ring 42 and a sleeve 43 fixed to the case 41 in a state of being concentrically fitted and inserted in the holder 16 are provided, and the screw shaft portion 16a is provided in the screw hole portion 2d. The holder 16 can be concentrically connected and fixed to the shaft 2 to be cut by screwing. The tool mounting body 12 is rotatably fitted and held on the sleeve 43, and is made movable integrally with the case 41 in the axial direction of the holding body 16 by the thrust ring 42 and the collar portion 43a at the front end of the sleeve. It If a threaded shaft portion is formed on the shaft 2 to be cut, a screw hole portion that can be screwed into the threaded shaft portion may be formed at the front end portion of the holding body 16.

The drive mechanism 13 includes the air motor 20 supported by the case 41, a drive sprocket wheel 44 fixed to the output shaft of the motor 20, and a driven sprocket fixed to the rear end of the tool mounting body 12. It is equipped with a wheel 45 and an endless chain 46 wound around both sprocket wheels 44 and 45, and the tool attachment 12 can be rotated by driving the motor 20.

The feed operation mechanism 14 is rotatably supported by a bracket 47 attached to the rear end of the holding body 16 and extends in the axial direction with a screw shaft 48, and is fixed to the case 41 and engaged with the holding body 16. It is provided with a nut body 49 slidably engaged in the mating groove 16b in the axial direction and threadably fitted in the screw shaft 48. By rotating the screw shaft 48, a tool can be mounted. The body 12 can be moved back and forth in the axial direction together with the case 41 and the drive mechanism 13.

[0023]

[Effect of the device]

 As is clear from the above description, since the cutting device of the present invention is a small device that can be attached to a shaft member to be cut, it is possible to easily cut the shaft member without requiring a large installation space. it can. Moreover, it is possible to perform highly accurate cutting work even on a shaft member having a small diameter.

[Brief description of drawings]

FIG. 1 is a side view showing an embodiment of a cutting device according to the present invention.

FIG. 2 is a rear view of the same.

3 is a sectional view taken along line III-III in FIG.

4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a rear view showing another embodiment.

6 is a cross-sectional view taken along the line VI-VI of FIG.

FIG. 7 is a side view showing an example of a shaft member to be cut.

[Explanation of symbols]

2 ... Shaft member, 11 ... Holding mechanism, 12 ... Tool mounting body, 13
... Drive mechanism, 14 feed operation mechanism, 18 ... Cutting tool.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Isamu Inoue 1-chome, Mizushima Kawasaki-dori, Kurashiki City, Okayama Prefecture (No house number) Kawatetsu Steel Construction Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A cylindrical tool mounting body to which a cutting tool is mounted, and a shaft member, which is a fixed member to be cut, are detachably mounted, and the tool mounting body is rotatable about an axis line of the shaft member and the axis line. A holding mechanism that holds the tool mounting body so that it can move in any direction, a drive mechanism that is attached to the holding mechanism and that drives the tool mounting body to rotate while allowing axial movement, and a holding mechanism that moves the tool mounting body in the axial direction. A cutting device for a fixed shaft member, comprising: