JP2001315017A - Cutter for buried tap of track rail - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter for a buried tap of a track rail capable of easily cutting a projecting part of the buried tap press fitted in a mounting hole of the track rail by moving the cutter on the track rail by utilizing the slide guiding characteristic of the track rail. SOLUTION: The buried tap 4 is press fitted in the mounting hole 6 formed on the track rail 1 to close the mounting hole 6. The cutter 50 for the buried tap of the track rail 1 rotates a tool set in a guide plate 53 mounted on a lower end of a motor supporting body 51 at a high speed along an upper face 5 of the track rail 1 by the driving of a driving motor 54 mounted on an upper end of the motor supporting body 51. As the guide plate 53 is guided and traveled on the track rail 1 in a stable posture, a part projecting from the upper face 5 of the track rail 1, of the buried tap 40 can be cut to be substantially flush with the upper face 5 with high accuracy.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a projecting portion from the upper surface of a track rail for an embedding plug which fills an upper portion of a mounting hole used for mounting the track rail to one of a relative moving member such as a base. The present invention relates to a track rail cutter for cutting rails.

[0002]

2. Description of the Related Art Conventionally, in order to guide relative linear motion, a track rail 1 basically attached to one of relative moving members such as a base 8 as shown in FIG. A linear motion rolling guide unit, which is a linear motion guide unit that is mounted on the other of the relative moving members and slides on the track rail 1 and slidable on the track rail 1. U is used. First track grooves 4, 4 are formed on a pair of longitudinal side surfaces 3, 3 facing the outside of the track rail 1, respectively. A mounting hole 6 for mounting the track rail 1 to the base 8 is formed through the track rail 1.
The mounting hole 6 opens in the upper surface 5 of the track rail 1.

The slider 2 includes a casing 10 that straddles the upper surface 5 of the track rail 1, an end cap 11 that is mounted in contact with both longitudinal end faces of the casing 10, and a gap between the track rail 1 and the end cap 11. An end seal 12 is provided on the end face of the end cap 11 for sealing. The end cap 11 and the end seal 12 are mounted on the casing 10 by mounting screws 13. A second raceway groove 14 is formed in the casing 10 at a position facing the first raceway groove 4 of the raceway rail 1. The casing 10 is further provided with a screw hole 16 opened on the top surface 15 for attaching the slider 2 to the table. A lower surface seal 17 is attached to the lower surfaces of the end cap 11 and the casing 10 to seal a gap between the casing 10 and the end cap 11 and both longitudinal side surfaces 3 of the track rail 1.

In order to make the slider 2 slidable with respect to the track rail 1, a plurality of balls 20 as rolling elements are formed in the first track groove 4 formed in the track rail 1 and the casing 10. It is possible to roll on the load track path 21 formed between the second track groove 14. Slider 2 has
Even when the slider 2 is separated from the track rail 1, a holding band 24 for holding the ball 20 so as not to be scattered is provided. Each ball rolling on the load track 21 is
Infinite circulation is possible by traveling along a return passage 22 formed in the casing 10 and a direction change passage (not shown) formed in both end caps 11 and connected to the load raceway 21 and the return passage 22. Return passage 2
2 and the direction change path constitute a no-load track path, and the loaded track path 21 and the no-load track path form an infinite circulation path.
A grease nipple 25 for supplying grease to the endless circulation path is attached to the end cap 11 so as to protrude from the outer surface of the end seal 12.

[0005] The track rail 1 is usually mounted on the base 8 by mounting bolts at a plurality of positions, preferably equally spaced in the longitudinal direction. The mounting bolt is inserted into the mounting hole 6 formed in the track rail 1 and screwed into the screw hole of the base 8. In the screwed state, the head of the mounting bolt sinks below the opening of the mounting hole 6. It is in a state, and foreign matter easily accumulates in the depression. In order to prevent the accumulation of foreign matter and prevent the slider 2 from sliding on the track rail 1, the hole of the mounting hole 6 left above the head of the mounting bolt is plugged with a plug. It is. By plugging, foreign matter is prevented from accumulating in the mounting hole 6, and as a result, foreign matter is prevented from entering the slider 1.

[0006] Generally, the plug is a resin molded product,
It is set so as to be flush with the upper surface 5 of the track rail 1. Normally, a resin molded product as described above may be used. However, in a machine tool or the like, chips and the like that have become hot due to the cutting work are scattered on the track rail 1, and in this case, they are deformed by heat. Instead of a resin molded product that may be damaged, a metal plug such as aluminum or brass that is not deformed by a little heat is used.

FIG. 6 is a sectional view showing a state in which a metal plug is mounted in a mounting hole formed in a track rail. The mounting hole 6 formed in the track rail 1 is connected to the first counterbore hole 30 having a diameter D ₁ into which the head 27 of the mounting bolt 26 is loosely fitted, and is connected to the first counterbore hole 30 and has a diameter of the first counterbore hole 30. A screw insertion hole 32 having a diameter D ₂ smaller than D ₁ , and a first counterbore hole 3 which opens in the upper surface 5 of the track rail 1 and is connected to the first counterbore hole 30.
Slightly than the diameter D ₁ of the 0 consists second counterbored hole 33 having a larger diameter D _3. The first counterbore hole 30 has a depth slightly exceeding the height of the head 27 of the mounting bolt 26 and accommodates the head 27. In the screw insertion hole 32,
The screw portion 29 of the mounting bolt 26 is loosely fitted. Also,
A step 34 is formed between the first counterbore hole 30 and the second counterbore hole 33. The base 8 has a track rail 1
A screw hole 35 is formed corresponding to the mounting hole 6 of
The screw portion 29 of the mounting bolt 26 inserted through the mounting hole 6
Is screwed into the screw hole 35 so that the mounting bolt 26
The track rail 1 can be fixed to the base 8 in a state where the lower surface 28 of the head 27 is pressed against the shelf surface 31 of the step portion 34.

When the mounting of the track rail 1 to the base 8 by the mounting bolt 26 is completed, the second counterbore hole 3 is formed.
A metal plug 40 made of aluminum, brass, or the like is press-fitted into 3. The height of the plug 40 is the second counterbore hole 33.
Is slightly higher than the depth of the plug 40
Is pushed until it comes into contact with the step portion 34 of the second counterbore hole 33, a projecting portion 41 protruding from the upper surface 5 of the track rail 1 by δ occurs. The projecting portion 41 of δ of the plug 40 may damage the end seal 12 and collide with the slider 2 as it is, so that it is cut so as to be flush with the upper surface 5 of the track rail 1. The upper surface of the plug 40 after cutting is precisely flush with the upper surface 5 of the track rail 1 so that foreign matter such as chips does not enter the slider 2 for a long period of time even when used in a place with a lot of chips. ing. That is, even if the slider 2 slides on the track rail 1 for a long period of time, the end seal 12 on the end face of the slider 2 is prevented from being worn at the plug 40. Conventionally, shaving of the protruding portion 41 of the plug 40 has been performed by a user who uses the linear motion rolling guide unit U by hand shaving or an arbitrary cutting tool.

As a plug for closing the rail mounting hole of the linear guide device, a cap which can be easily mounted to and removed from the rail mounting hole and which can be mounted flat without forming irregularities on the rail surface is used. No. 117914 (full text). The cap for the rail mounting hole of the linear guide device disclosed in this publication includes a cap body formed by pressing a steel plate and a rubber or synthetic resin formed by being fixed to the upper surface and the upper outer peripheral surface of the cap body. And an elastic covering member made of A plurality of projections separated by slits are formed on the outer periphery of the cap body, and the projections are strongly pressed against the inner peripheral surface of the rail mounting hole by their elastic force and exhibit a retaining force. The slit provides elasticity to the projection and functions as an outlet for high air pressure generated inside and an air inlet for desorption. The elastic covering member elastically deforms in response to the press-fit of the cap body, fills a gap between the rail mounting hole, and prevents a step or a pressing place from being formed between the upper surface of the guide rail and the upper surface of the elastic covering member. . When the outer edge of the elastic covering member is pushed up and raised, the raised portion is cut off and flattened.

[0010]

With respect to the above-mentioned cap for a rail mounting hole, a track rail (guide rail) is used.
Usually, there is no particular problem in the mounting. However, when used in an environment where there are many foreign substances such as chips, such as a machine tool, the plug is still pushed in by the chips and the like, so that a step is generated, and the foreign substances accumulate in the step. That is, the foreign matter accumulated in the step portion damages the end seal and enters the slider.
When foreign matter enters the rolling element portion between the raceway grooves, indentations are formed on the raceway surface and the rolling surface, which causes a short life.

At present, cutting of the projecting part of the plug is
Each user is individually performed with a handrail or various cutters, and this cutting work is a very troublesome and time-consuming work with many mounting locations. In recent years, under the situation where the linear motion rolling guide unit used for the sliding guide portion of an assembly device, a machine tool, etc. has become generalized, the sliding guide property provided by the track rail to the slider is utilized. There is a demand for a versatile cutter that can quickly cut the protrusion of the plug and complete the installation of the track rail by sliding the plug against the track rail.

[0012]

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problems, and a track rail is provided for a plug having a drive motor mounted thereon by utilizing a sliding guide inherently provided by its shape. By moving the cutter on the track rail, it is possible to easily cut the protruding part protruding from the mounting hole of the plug inserted into the mounting hole of the track rail. An object of the present invention is to provide a cutter for embedding a track rail that is lightweight, compact, and easy to handle without damaging an end seal or causing foreign matter such as cutting powder to enter the inside of a slider.

According to the present invention, there is provided a motor support body to which a drive motor is attached, a guide plate attached to the motor support body and having a through hole facing a blade axis driven by the drive motor, and A tip is provided with a blade attached to the guide plate in a state of being seen through the through hole, and a plug for opening the upper surface of the track rail constituting the linear motion guide unit and closing the mounting hole is formed with the upper surface. A track adapted to be applied with the cutting level by the blade close to the upper surface of the track rail and the guide plate slidable with respect to the track rail for substantially flush cutting; The present invention relates to a cutter for plugging rails.

According to this track rail plugging cutter,
When the drive motor mounted on the motor support body is driven, the blade attached to the tip of the blade shaft facing the through hole of the guide plate while looking through the through hole of the guy plate cuts close to the upper surface of the track rail. Perform cutting operation at the level. Since the guide plate is slidable with respect to the track rail, the plug cutter is simply slid with respect to the track rail, and a plurality of plugs that close the mounting holes formed in the upper surface of the track rail. The projecting portion protruding from the upper surface of the track rail can be easily cut substantially flush with the upper surface of the track rail.

The drive motor is an air motor that operates by using the pressure of air. Since a heavy magnetic pole is not used unlike the electric motor, it is possible to configure the drive motor into a lightweight and compact structure.

The motor support body is formed of a cylindrical body having a hollow portion formed therein, and the drive motor is attached to one end of the cylindrical body, and the guide plate is provided with the through hole communicating with the hollow portion. The output shaft of the drive motor is attached to the other end of the cylindrical body, and is connected to the blade shaft via a coupling disposed in the hollow portion of the motor support body. It is preferable that the output shaft of the drive motor is arranged so as to coincide with the center axis of the cylindrical body. The output shaft of the drive motor is connected to the blade shaft via a coupling disposed in the hollow portion of the cylinder, and the blade shaft faces a through hole of the guide plate communicating with the hollow portion. The blade attached to the blade shaft is arranged at a position where the blade is viewed through the opening of the through hole.

In at least one of the hollow portion of the motor support main body and the through hole of the guide plate, a discharge port for discharging chips of the plug generated by being cut by the blade is provided. It is connected. Since the chips of the plug generated by the cutting by the cutting tool accumulate in the hollow portion of the motor support body and the through hole of the guide plate, the chips of the hollow portion of the motor support body and the through hole of the guide plate are removed. Chips are discharged to the outside through a discharge port connected to at least one of them.

A handle is mounted on the motor support body so that the mounting direction can be changed. Attaching the handle to the motor support body makes it easier to handle the plug cutter. In particular, in a state where the embedding cutter is mounted on the track rail, it becomes easy to slide the embedding cutter with respect to the track rail by pushing or pulling with the handle. The handle is mounted on the motor support body so that the mounting direction can be changed, so that the mounting direction can be changed to a direction that is easy to operate according to the mounting condition of the track rail to the base and the surrounding conditions. It is possible.

The guide plate, when applied to the track rail, has an inner side surface slidable in a side surface in a longitudinal direction of the track rail or a track groove formed in the side surface, and a guide plate adjacent to the upper surface of the track rail. And a recess having a lower surface formed therein, and the through-hole is open to the recess. According to the guide plate having such a structure, in a state where the guide plate is applied to the track rail, the guide plate slides on the side face along the longitudinal direction of the track rail or the track groove formed on the side face along the longitudinal direction of the track rail. Therefore, even during cutting, the posture of the guide plate with respect to the track rail is stable, and the lower surface of the recess takes a fixed position close to the upper surface of the track rail, so that the plug can be cut with high accuracy. .

The blade is attached to the tip end of the blade shaft via a tip holder at a position offset from the axis of the blade shaft. The blade rotates around the axis of the blade axis with the rotation of the blade axis.
Therefore, even with a small blade, it is possible to cut the plug as the plug cutter advances.

The linear motion guide unit is configured to mount the track rail on one of the relative moving members by a mounting bolt passing through the mounting hole, and to slide a slider slidably provided on the track rail. It is applied between the relative moving members by being attached to the other of the relative moving members. Further, the mounting hole is provided above the first counterbore hole in which the head of the mounting bolt fits.
A second counterbore hole connected to the counterbore hole and having a larger diameter than the first counterbore hole is provided, and the plug is press-fitted into the second counterbore hole to close the mounting hole.

The linear motion guide unit is a linear motion rolling guide unit having a track groove formed on a longitudinal side surface of the track rail, and the slider has a track groove formed facing the track groove of the track rail. A plurality of endless caps fixed to both ends of the casing, a plurality of endless caps fixed to both ends of the casing, a plurality of load raceways formed between the two raceway grooves, and a plurality of traversable paths formed on the end cap. A rolling element; and an end seal disposed on an end face of the end cap to seal between the track rail and the slider.

[0023]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing an embodiment of a track rail plug cutter according to the present invention; FIG. 1 is a perspective view showing an embodiment of a track rail plugging cutter according to the present invention in a state of straddling the track rail, FIG.
1 is a front view of the plugging cutter shown in FIG. 1, FIG. 3 is a side view of the plugging cutter shown in FIG. 1, FIG. 4 is a perspective view of the plugging cutter shown in FIG. FIG. 2 is a longitudinal sectional view of the embedding cutter shown in FIG. 1. It is clear that, for example, the linear motion guide unit having the structure already described with reference to FIG. 7 can be used.

As shown in FIG. 6, one embodiment of an embedding cutter as a dedicated tool for cutting the protruding portion 41 of the embedding plug 40 press-fitted into the mounting hole 6 of the track rail 1 is shown in FIGS. A description will be given based on FIG. The embedding cutter 50 is
A motor support main body 51 that is disposed so as to straddle the track rail 1 and supports a drive motor as described later;
(Upper surface 5 and longitudinal side surface 3 or track groove 4), guide plate 53 guided in a state of sliding, drive motor 54 attached to the upper part of motor support body 51, output shaft 70 of drive motor 54 ( (See FIG. 5), a rotatable tip holder 55 disposed below the guide plate 53, and a tip 56 which is attached to the tip holder 55 and has a cutting edge on the outer periphery and the lower surface of the tip holder 55 with the edge thereof being viewed. It has. The guide plate 53 is
It is fixed to the motor support main body 51 by a plurality of mounting screws 65 (FIG. 4) mounted from above the motor support main body 51.

The drive motor 54 is an air motor that is driven to rotate by the pneumatic pressure of air supplied from an air supply source through a flexible air hose 60. The air hose 60 has connectors 61, 61 at both ends.
61 is connected to the air supply source (not shown) or the drive motor 54, respectively. Air hose 60 and drive motor 54
An air motor start valve 62 is provided at the connection portion with the air motor. Since the air motor does not have a heavy magnet unlike an electric motor, it can be made compact and lightweight.

The guide plate 53 has a lower portion slidingly contacting the upper surface 5 of the track rail 1 or an opposing lower surface 57 slightly spaced from the upper surface 5 of the track rail 1 so as to slide in the width direction of the track rail 1. It has a concave portion 59 having both inner side surfaces 58 having a width slightly larger than the width dimension. A pair of handles 63, 63 are provided on the left and right of the motor support body 51 to improve operability. Since the attachment portions of the handles 63, 63 are arranged at the respective corners of the square, it is easy to operate the embedding cutter 50 according to the installation state of the track rail 1 or the situation around the track rail 1. In this way, the motor support body 51 can be replaced in the front-rear direction.

The internal structure of the cutter 50 will be described with reference to the sectional view shown in FIG. The motor support body 51 is formed into a cylindrical body by combining several annular components, and is formed in a hollow portion 69 therein. Drive motor 5
4 is attached to the upper end of the cylindrical body, and guide plate 53
Is attached to the lower end of the cylindrical body. An output shaft 70 of the drive motor 54 extends into a hollow portion 69 formed inside the motor support main body 51, and a distal end of the output shaft 70
A blade shaft 72 is connected via a coupling 71. The blade shaft 72 is rotatably supported by a housing 74 of the motor support main body 51 by bearings 73, 73 arranged in a hollow portion 69 of the motor support main body 51. The guide plate 53 has a through hole 76 connected to the hollow portion 69, and the tip end portion 75 of the blade shaft 72 faces the inside of the through hole 76. Output shaft 7 of drive motor 54
0, each central axis of the coupling 71 and the blade shaft 72 is
It is preferable to make the center axis C-C of the motor support main body 51 which is a cylindrical body coincide.

The tip holder 55 is fixed to the tip end portion 75 of the blade shaft 72 located on the tip end side of the bearing 73 by attaching screws 66 so that the tip end portion 75 is sandwiched between the tip holder 75 and the mounting plate 67. The tip holder 55 is a single tip 56 which is a triangular blade having cutting edges on three surfaces.
Are supported in a state where one corner portion 56 a thereof is peeped to the outer periphery of the chip holder 55, and the lower edge 55 b of one side portion is peeped to the lower surface 55 a of the chip holder 55. The tip 56 is fixed to the tip holder 55 at a position offset (offset amount E) from the center axis CC of the blade shaft 72. In this embodiment, the lower surface 57 of the guide plate 53 is in sliding contact with the upper surface 5 of the track rail 1, and the position of the cutting edge 56b is
Is set on the chip holder 55 so as to coincide with the lower surface 57 of the chip. However, in practice, the cutting level, which is the height position of the turning surface on which the cutting edge 56b turns, from the track rail 1, is set so that the upper surface 5 of the track rail 1 is not scratched by the blade.
Although it is close to the upper surface 5 of the track rail 1, it is set at a position slightly retracted from the upper surface 5.

The outer peripheral diameter D _{4 of the} cutting edge formed by rotating the cutting edge 56b.
(= 2E) corresponds to the position including the largest diameter plug among the plugs 40 of various types. That is, the tip 56 is supported by the tip holder 55 at a position including the plug 40 having the largest diameter. When the drive motor 54 is driven to rotate by the pressure of air, the blade shaft 72 rotatably supported by the bearing 73 moves to the motor drive shaft 7.
0, rotated through the coupling 71. Blade axis 72
The tip 56 attached to the tip portion 75 of the
Rotate around.

The motor support main body 51 has a hollow portion 69 formed inside the motor support main body 51 in order to discharge the chips W (FIG. 1) generated by cutting the projecting portion 41 of the plug 40 to the outside. Alternatively, a cylindrical discharge port 64 communicating with at least one of the through holes of the guide plate 53 is provided on one of the left and right sides of the motor support main body 51. Outlet 6
Reference numeral 4 denotes an opening for discharging chips W to the side of the track rail 1.

The mode of use of the plug cutter 50 having the above structure will be described below. The track rail 1 disposed on the base 8 is fixed to the base 8 by screwing the mounting bolt 26 inserted into the mounting hole 6 into the base 8. The plug 40 is composed of the track rail 1 fixed to the base 8.
Is press-fitted into the mounting hole 6, but the press-fit state of the plug 40 is
As described with reference to FIG. 6, this is a state in which the protruding portion 41 slightly protruding from the upper surface 5 of the track rail 1 is formed. Next, the embedding cutter 50 is disposed so as to straddle the upper surface 5 of the track rail 1 as shown in FIG. With the driving motor 54 operated and the tip 56 as a blade being rotated at a high speed, the plugging cutter 50 is moved to the track rail 1.
For example, by moving from the near side to the far side along the longitudinal direction of the plug, the projecting portion 41 of the plug 40 can be sequentially cut from the near side by the tip 56 rotating at a high speed. Therefore, the cutting process can be easily performed so that the projecting portion 41 of the plug 40 is aligned with the upper surface 5 of the track rail 1 by one pass of the plug cutter 50.
In practice, the upper surface of the plug 40 can be made to completely coincide with the upper surface 5 of the track rail 1 by performing a finishing process by hand finishing or the like.

[0032]

The track rail plug cutter according to the present invention is constructed as described above and has the following effects. That is, for the track rail in which the plug is press-fitted into the mounting hole of the track rail mounted on the base, the plug is mounted in a state of straddling the plug cutter equipped with the drive motor,
The plug cutter is moved in the longitudinal direction of the track rail while the tip, which is a blade, is rotated at a high speed along the upper surface of the track rail. The embedding cutter is guided while maintaining its attitude with respect to the track rail with high accuracy due to the high guideability between the track rail and the guide plate. Therefore, since the plug can be cut simply by sliding the plug cutter along the track rail, the cutting operation is easy, and even when a large number of plugs are present, the track rail can be cut. The protruding portion protruding from the upper surface is sequentially cut by one run (pass), so that the upper surface of the plug can be made to coincide with the upper surface of the track rail with high accuracy.

Since the cutter for plugging the track rail is basically composed of a drive motor such as an air motor and a blade, it is lightweight and compact, and easy to handle. Depending on the scale of the linear motion rolling guide unit, the size of the track rail varies and the size of the plug changes, but the plug cutter can be easily coped with only by replacing the guide plate. Since the protrusion of the plug is cut flat with high precision and has a good finish, it does not damage the end seal or cause foreign matter such as cutting powder to enter the inside of the slider when the slider is running. Furthermore, a commercially available chip can be applied to the tip which is a blade, and an embedding cutter can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a track rail plugging cutter according to the present invention in a state of straddling a track rail.

FIG. 2 is a front view of the plug cutter shown in FIG.

FIG. 3 is a side view of the embedding cutter shown in FIG. 1;

FIG. 4 is a perspective view of the plug cutter shown in FIG. 1 as viewed from below.

FIG. 5 is a longitudinal sectional view of the plug cutter shown in FIG. 1;

FIG. 6 is an explanatory sectional view showing a state immediately after press-fitting of the plug.

FIG. 7 is a perspective view showing an example of a conventional linear motion rolling guide unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Track rail 2 Slider 3 Longitudinal side surface 4 Track groove 5 Top surface 6 Mounting hole 8 Base (relative moving member) 10 Casing 11 End cap 12 End seal 14 Track groove 20 Rolling element 21 Load track path 26 Mounting bolt 27 Head 30 1 counterbore hole 33 second counterbore hole 40 plugging plug 50 plugging cutter 51 motor support body 53 guide plate 54 drive motor 55 chip holder 56 chip (blade) 57 lower surface 58 inner side surface 59 concave portion 63 handle 64 discharge port 69 hollow portion 70 Output shaft 71 Coupling 72 Tool shaft 75 Tip 76 Through hole U Linear motion rolling guide unit CC Central axis E Offset amount W Chips

Claims (10)

[Claims] 1. A motor support body to which a drive motor is attached, a guide plate attached to the motor support body and formed with a through hole facing a blade axis driven by the drive motor, and a tip end of the blade axis A cutting tool attached to the guy plate so as to be seen through the through-hole, and a plug for opening the upper surface of the track rail constituting the linear motion guide unit and closing the mounting hole is substantially formed with the upper surface. The cutting level of the blade is brought close to the upper surface of the track rail, and the guide plate is slidably moved with respect to the track rail. Embedding cutter. 2. The track rail plug cutter according to claim 1, wherein the drive motor is an air motor. 3. The motor support main body comprises a cylindrical body having a hollow portion formed therein, the drive motor is attached to one end of the cylindrical body, and the guide plate has a state in which the through hole communicates with the hollow portion. The output shaft of the drive motor is attached to the other end of the cylindrical body, and the output shaft of the drive motor is connected to the cutter shaft via a coupling disposed in the hollow portion of the motor support body. 1 or 2
4. A cutter for plugging a track rail according to claim 1. 4. A discharge for discharging chips of the plug generated by being cut by the blade into at least one of the hollow portion of the motor support main body and the through hole of the guide plate. 4. The track rail plugging cutter according to claim 3, wherein the outlet is connected. 5. The motor support body has a handle,
The cutter for embedding a track rail according to any one of claims 1 to 4, wherein the cutter is mounted so that the mounting direction can be changed. 6. The guide plate, when applied to the track rail, has an inner side surface slidable in a longitudinal side surface of the track rail or a track groove formed in the side surface, and the upper surface of the track rail. The cutter for embedding a track rail according to any one of claims 1 to 5, further comprising a concave portion having a lower surface adjacent to the groove, and wherein the through hole is opened in the concave portion. 7. The cutter according to claim 1, wherein the cutter is attached to the tip end of the cutter shaft via a tip holder at a position offset from the axis of the cutter shaft. 2. The cutter for embedding a track rail according to claim 1. 8. The linear motion guide unit is mounted on one of the relative moving members by a mounting bolt passing the track rail through the mounting hole, and is provided slidably on the track rail. 8. The track rail plug cutter according to claim 1, wherein a slider is attached to the other of the relative moving members by attaching a slider to the other of the relative moving members. 9. The mounting hole includes a second counterbore hole connected to the first counterbore hole and having a diameter larger than the first counterbore hole, above the first counterbore hole into which the head of the mounting bolt is fitted. The cutter for plugging track rails according to claim 8, wherein the plug is provided to close the mounting hole by being pressed into the second counterbore hole. 10. The linear motion guide unit is a linear motion rolling guide unit having a track groove formed on a longitudinal side surface of the track rail, and the slider is provided with a track groove opposed to the track groove of the track rail. Is formed, an end cap fixed to both ends of the casing, an infinite circulation path including a load track path formed between the two track grooves and a direction change path formed in the end cap. 10. The track rail plug according to claim 8, further comprising: a plurality of rolling elements, and an end seal disposed on an end face of the end cap to seal between the track rail and the slider. For cutter.