JPH0810510Y2 - Cutter device for track rail - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a track rail cutter device.

[0002]

2. Description of the Related Art Various cutters have been proposed as cutter devices for cutting joint welds of track rails.
For example, as described in JP-A-56-28903, it is generally composed of a disc (cylindrical) grindstone.

[0003]

Since the conventional example is constituted by a disc-shaped grindstone, when grinding each of the upper surface portion, the arc portion and the side surface portion of the rail head, the grindstone of the grindstone is made to correspond to each portion. The direction has to be changed, which inevitably complicates the entire structure of the grinding machine and also requires a corresponding grinding time.

The present invention has been made by paying attention to the drawbacks of the conventional example.

[0005]

Means for Solving the Problems A recessed portion for engaging a head portion of a track rail is provided on the peripheral side of an intermediate portion in a lateral direction of a cutter body that rotates on a horizontal axis, and the recessed portion has an upper surface of the head portion. Part, arcuate part and side part are separately attached to the grinding blade.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of a track rail cutter device according to the present invention. FIG. 1 is a partially cutaway front view, FIG. 2 is a side view of a first structure, and FIG. [Fig. 6] is a side view of the second structure.

In the embodiment, key grooves 4 and 4 are formed in the through holes 3 and 3 provided in the first structure 1 and the second structure 2, and the key 13 assembled to the main shaft 5 is formed in the key groove 4. Assembling each constituent body 1, 2 to the main shaft 5 such that the second constituent body 2 is interposed between the pair of first constituent bodies 1, 1 so as to be engaged with each other.
A flange 6 protruding from the main shaft 5 and a tightening nut 7 are tightened through collars 8 and 8 to form a device of the present invention.
By interposing the main body portion 2a of the second structure 2 having a small outer diameter between the main body 1a and the main body portion 1a, 2a of the cutter body 9 in the lateral direction intermediate side circumferential side, the track rail R of the track rail R. The recessed portion 10 that engages the head portion Ra is formed.

The recessed portion 10 has a shape similar to the contour of the head Ra of the track rail R in a front view.
A first grinding blade 11a, a second grinding blade 11b, and a third grinding blade 11c, each of which is made of a carbide tip, are detachably attached to the cutter body 9 by a holding piece 14 tightened by a fixing screw 12.

The first grinding blades 11a are attached at three positions at substantially equal intervals in the circumferential direction on the inner surface of the first constituent main body 1a constituting the recessed portion 10, and the first grinding blades 11a, 11 are provided.
The positions a and 11a are arranged so as to be displaced in the circumferential direction so that the total sum of the widths of the respective turning trajectories is substantially equal to the width of the side surface portion R1 of the track rail R head Ra.

Similar to the first grinding blade 11a, three second grinding blades 11b are attached to the first structure main body portion 1a, and the second grinding blades 11b, 11b, 11b have the respective widths of the rotation trajectories. It is arranged so that the total sum thereof is substantially equal to the width of the arc surface portion R2 of the track rail Ra.

Further, six third grinding blades 11c are arranged in the peripheral surface region of the second main body 2a, and the third grinding blades 11c, 11c are provided.
The sum of the widths of the respective rotation loci of c ... is the rail head Ra.
Are arranged so as to substantially match the width of the upper surface portion R3.

The cutter body 9 of the embodiment is
Although the main body portions 1a and 2a of the second structural bodies 1 and 2 are used, the main body portions 1a and 2a may be configured to have a pair of structural bodies different in form from these structural bodies (composed of a pair or more is a key and a key groove). However, it may be a single one.

Further, the main shaft 5 of the embodiment is connected to a drive motor and is separated from the track rail R vertically and horizontally.

[0014]

[Effect of the Invention] Since the present invention is configured as described above,
By simply approaching and rotating each of the upper surface portion, the circular arc portion or the side surface portion of the track rail head, it is possible to freely grind each of the above portions as needed, and to form a complicated structure like the conventional example. There is an advantage that it is not necessary, and since it is equipped with a grinding blade that cuts each of the above parts separately, it is possible to surely grind the necessary parts with a small amount of power.

[Brief description of drawings]

FIG. 1 is a front view in which a part is broken away.

FIG. 2 is a side view of the first structure.

FIG. 3 is a side view of a second structure.

[Explanation of symbols]

 9 Cutter Main Body 10 Recessed Part 11a First Grinding Blade 11b Second Grinding Blade 11c Third Grinding Blade

Claims (1)

[Scope of utility model registration request] 1. A recessed portion that engages a head portion of a track rail is provided on the circumferential side of an intermediate portion of a cutter body that rotates laterally, and the recessed portion has an upper surface portion and an arc portion. And a track rail cutter device with detachable grinding blades for cutting side and side parts separately.