JP6746174B1 - Portable lathe cover and portable lathe - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cover for a portable lathe and a portable lathe capable of improving workability in cutting work. A cover body 10 has a tubular portion 10a, a first wall 10b, and a second wall 10c. The tubular portion 10a has a cylindrical shape, a discharge port 10f is provided on the peripheral wall, and the lathe body 101, the movable portion 102, and the tool module 104 are arranged inside. The first wall 10b is provided with a first opening 10d for closing the −Y direction side of the tubular portion 10a and inserting the work W1 in the central portion, and the outer peripheral portion of the first opening 10d is the lathe body 101. It is fixed on the −Y direction side. The second wall 10c closes the +Y direction side of the tubular portion 10a, and is provided with a second opening 10e having an inner diameter larger than at least the outer diameter of the workpiece W1 at the center. The lid 125 is provided in the tubular portion 10a and can be in a closed state that covers the discharge port 10f and an open state that does not cover the discharge port 10f. [Selection diagram] Figure 2

Description

The present invention relates to a cover for a portable lathe and a portable lathe.

A portable lathe for cutting a cylindrical work, which is an annular lathe body mounted on the outer peripheral surface of the work, and a lathe body that is annular and is arranged at one end side in the thickness direction of the lathe body. On the other hand, a portable lathe including a movable part that rotates around a central axis along the thickness direction of the lathe body and a tool module that is fixed to the movable part and has a tool for cutting a workpiece has been proposed. (See, for example, Patent Documents 1 and 2). Here, the tool module holds the tool in a posture in which the tip portion of the tool projects toward the central axis of the lathe body in a direction orthogonal to the central axis of the lathe body. Then, the portable lathe cuts the work from the outer peripheral surface of the work by rotating the movable portion with respect to the lathe body with the tip of the tool abutting the outer peripheral surface of the work.

Japanese Patent Publication No. 58-501315 Japanese Patent Publication No. 2-503173

However, in the case of the portable lathe described in Patent Document 1, when the work is cut, the cutting chips generated from the work scatter, and the worker needs to collect and process the scattered cutting chips. .. For this reason, since the worker needs to process the chips, the work for cutting the work is troublesome, and the workability in the work for cutting the work may be deteriorated.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cover for a portable lathe and a portable lathe that can improve workability in cutting work.

In order to achieve the above object, the cover for a portable lathe according to the present invention,
An annular lathe body, and a movable portion that is annular and is disposed at one end side in the thickness direction of the lathe body and that rotates with respect to the lathe body around the central axis along the thickness direction of the lathe body,
A tool module for holding a tool fixed to the movable part for cutting a cylindrical work in a posture in which a tip end part of the tool projects toward the central axis of the lathe body in a direction orthogonal to the central axis of the lathe body. A cover for a portable lathe attached to a portable lathe, comprising:
A discharge port for discharging cutting powder accumulated inside is provided on the peripheral wall of a cylindrical shape, and a cylindrical part in which the lathe body, the movable part and the tool module are arranged inside,
A first opening for closing the one end in the cylinder axis direction of the cylindrical portion and inserting the work in the center is provided, and an outer peripheral portion of the first opening in the thickness direction of the lathe body. A first wall fixed to the other end,
A second wall in which the other end side of the tubular portion in the cylinder axis direction is closed and a second opening portion is provided in the central portion, the inner diameter dimension of which is at least larger than the outer diameter dimension of the work on which the lathe body is mounted; A cover body having,
A lid body that is provided in the tubular portion and that can be in a closed state that covers the discharge port and an open state that does not cover the discharge port;
For example Bei connected to the member, the,
The cover body is
A first member having a shape corresponding to one when the cover body is divided by one first imaginary plane that includes the cylinder axis of the cylindrical portion and is parallel to the cylinder axis direction;
A second member having a shape corresponding to the other when the cover body is divided by the first virtual plane,
The connecting member connects the first member and the second member in a state where the first member and the second member are abutted against each other so as to form the cover body .

The portable lathe according to the present invention viewed from another point of view,
An annular lathe body,
A movable part that is annular and is disposed on one end side in the thickness direction of the lathe body and that rotates with respect to the lathe body about a central axis along the thickness direction of the lathe body,
A tool module for holding a tool fixed to the movable part for cutting a cylindrical work piece in a posture in which a tip end part of the tool projects toward the central axis of the lathe body in a direction orthogonal to the central axis of the lathe body. When,
A portable lathe provided with a cover for a portable lathe fixed to the lathe body,
The portable lathe cover is
A discharge port for discharging cutting powder accumulated inside is provided on the peripheral wall of a cylindrical shape, and a cylindrical part in which the lathe body, the movable part and the tool module are arranged inside,
A first opening for closing the one end in the cylinder axis direction of the cylindrical portion and inserting the work in the center is provided, and an outer peripheral portion of the first opening in the thickness direction of the lathe body. A first wall fixed to the other end,
A second wall in which the other end side of the tubular portion in the cylinder axis direction is closed and a second opening portion is provided in the central portion, the inner diameter dimension of which is at least larger than the outer diameter dimension of the work on which the lathe body is mounted; A cover body having,
A lid body that is provided in the tubular portion and can be in a closed state that covers the discharge port and an open state that does not cover the discharge port;
Connected to the member, the possess,
The cover body is
A first member having a shape corresponding to one when the cover body is divided by one first imaginary plane that includes the cylinder axis of the cylindrical portion and is parallel to the cylinder axis direction;
A second member having a shape corresponding to the other when the cover body is divided by the first virtual plane,
The connecting member connects the first member and the second member in a state where the first member and the second member are abutted against each other so as to form the cover body .

According to the present invention, the cover body has a tubular shape and is provided with a discharge port for discharging cutting chips, and the lathe body, the movable portion and the tool module are arranged inside, and the cylindrical portion A first opening for closing the one end side in the cylinder axis direction and inserting a work in the center is provided, and an outer peripheral portion of the first opening is fixed to the other end side in the thickness direction of the lathe body. A second opening provided with one wall and the other end of the cylindrical portion in the cylinder axis direction, and a central portion of which has a second inner diameter larger than at least the outer diameter of the workpiece on which the lathe body is mounted. And a wall. Further, the lid body can be in a closed state which is provided in the cylindrical portion and covers the discharge port, and an open state which does not cover the discharge port. With this, when cutting the work, the cutting dust generated from the work can be collected in the cover body by closing the lid body, and when the cutting dust is accumulated to some extent in the cover body, the lid body is closed. The open state allows the accumulated cutting chips to be discharged to the outside of the cover body. Therefore, the operator can efficiently process the chips generated when cutting the work, and the workability in cutting the work can be improved accordingly.

It is a front view of the portable lathe which concerns on embodiment of this invention. It is a side view of the portable lathe which concerns on embodiment. The portable lathe cover which concerns on embodiment is shown, (A) is a front view, (B) is a rear view. (A) is a plan view of a first member according to the embodiment, (B) is a plan view of a second member according to the embodiment, and (C) is a side view showing a connecting member according to the embodiment. It is a figure. (A) is a front view of a portable lathe according to the embodiment, and (B) is a plan view of a cover for a portable lathe according to the embodiment. (A) is a front view of a portable lathe according to the embodiment, and (B) is a plan view of a cover for a portable lathe according to the embodiment.

Hereinafter, a cover for a portable lathe according to an embodiment of the present invention will be described in detail with reference to the drawings. The portable lathe cover according to the present embodiment includes an annular lathe body and an annular lathe body which is arranged at one end side in the thickness direction of the lathe body and is arranged along the thickness direction of the lathe body with respect to the lathe body. A movable part that rotates around the central axis and a tool that is fixed to the movable part and that cuts a cylindrical work piece protrudes toward the central axis side of the lathe body in a direction where the tip of the tool is orthogonal to the central axis of the lathe body. The tool module is held in a posture, and is mounted on a portable lathe equipped with the tool module. This portable lathe cover includes a cover body and a lid. The cover body has a tubular portion, a first wall that closes one end side of the tubular portion in the cylinder axis direction, and a second wall that closes the other end side of the tubular portion in the cylinder axis direction. The cylindrical portion has a cylindrical shape, and a discharge port for discharging the cutting powder accumulated inside is provided on the peripheral wall, and the lathe body, the movable portion, and the tool module are arranged inside. The first wall is provided with a first opening for inserting a work in the center thereof, and an outer peripheral portion of the first opening is fixed to the other end side in the thickness direction of the lathe body. The second wall is provided with a second opening portion having an inner diameter larger than at least the outer diameter of the work on which the lathe body is mounted in the central portion. The lid is provided on the tubular portion and can be in a closed state that covers the discharge port of the cover body and an open state that does not cover the discharge port.

As shown in FIGS. 1 and 2, a portable lathe 1000 according to the present embodiment has an annular lathe body 101, an annular movable portion 102, a tool module 104 fixed to the movable portion 102, And a portable lathe cover 1. The portable lathe 1000 also includes a motor unit 103 having a motor (not shown) for driving the movable portion 102 to rotate. Here, for example, a hydraulic motor is adopted as the motor, and a pinion gear (not shown) is fixed to the shaft thereof. The lathe body 101 can be divided into two semi-arc-shaped sub bodies 101a and 101b. The movable portion 102 is annular and is arranged on the +Y direction side of the lathe body 101, and is rotatable relative to the lathe body 101 about a central axis J1 along the thickness direction of the lathe body. It is supported by the main body 101. The movable part 102 can also be divided into two semi-arc-shaped sub movable parts 102a and 102b. The movable portion 102 is provided with a rack gear (not shown) extending along the circumferential direction of the movable portion 102 and meshing with a pinion gear (not shown) fixed to the shaft of the motor of the motor unit 103. .. Then, in the movable portion 102, when the shaft of the motor of the motor unit 103 rotates, the rack gear meshing with the pinion gear fixed to the shaft rotates around the central axis J1. As a result, the movable portion 102 rotates about the central axis J1 as shown by an arrow AR1 in FIG. Further, on the −Y direction side of the lathe body 101, a screw hole (not shown) for fixing the portable lathe cover 1 to the lathe body 101 with the screw 9 is provided.

The tool module 104 holds the tool 106 for cutting the cylindrical work W1 in a posture in which the tip of the tool 106 projects toward the central axis J1 of the lathe body 101 in the direction orthogonal to the central axis J1 of the lathe body 101. It has a tool holder 105 for performing.

The portable lathe cover 1 includes a cover body 10 and a lid 125. The cover body 10 includes a tubular portion 10a, a first wall 10b that closes one end side of the tubular portion 10a in the cylinder axis J2 direction, and a second wall 10b that closes the other end side of the tubular portion 10a in the cylinder axis J2 direction. And a wall 10c. The cover body 10 is made of, for example, a transparent resin. Thereby, the state of the cutting work of the work W1 can be visually recognized from the outside of the cover body 10. The cover body 10 and the lid 125 are each formed of a plate material having a thickness of 2 mm or more and 5 mm or less.

The cylindrical portion 10a has a cylindrical shape, and a peripheral wall is provided with an outlet 10f for discharging the cutting chips accumulated inside, and the lathe body 101, the movable portion 102, and the tool module 104 are arranged inside. The outer diameter of the tubular portion 10a is set to be longer than the length between the central axis J1 of the lathe body 101 and the edge of the tool module 104 on the side opposite to the central axis J1 side, for example, 200 mm. The length is set within the range of 205 mm or less. The width WD1 of the tubular portion 10a in the Y-axis direction is set to be longer than the width of the combined portion of the lathe body 101, the movable portion 102, and the tool module 104 in the Y-axis direction, for example, 150 mm or more and 160 mm or less. Set to a length within the range of. Further, as shown in FIG. 2, the cylindrical portion 10a is provided with a supply hole 115 for supplying the lubricating oil to the tip portion of the tool 106. The supply hole 115 is provided in a portion of the tubular portion 10a that intersects with a virtual plane CL that is a second virtual plane including a trajectory drawn by the tip of the tool 106 in a state where the cover body 10 is fixed to the lathe body 101. It is provided to include a part. This allows the lubricating oil to be accurately supplied to the tip of the tool 106. The supply hole 115 is located on the +Z direction side of the central portion of the cover body 10 in the Z axis direction. Thus, when the cover body 10 is used in a posture in which the +Z direction side thereof is vertically upward, the lubricating oil introduced into the cover body 10 from the supply hole 115 is efficiently supplied to the tip portion of the tool 106.

The first wall 10b is provided with a first opening 10d for inserting the work W1 in the central portion, and the outer peripheral portion of the first opening 10d is provided with a screw 9 on the other end side in the thickness direction of the lathe body 101. It is fixed. Specifically, the screw 9 inserted into the through hole 111e provided in the first wall 10b described later is screwed into the screw hole provided on the −Y direction side of the lathe main body 101, so that the first wall 10b is fixed to the lathe body 101. In this way, the cover body 10 is fixed to the lathe body 101 by the screws 9. Therefore, the cover body 10 can be removed from the lathe body 101 by loosening the screw 9. At this time, the cover body 10 is arranged so that the cylinder axis J2 of the cylindrical portion 10a coincides with the central axis J1 of the lathe body 101. The second wall 10c is provided with a second opening 10e having an inner diameter larger than at least the outer diameter of the workpiece W1 on which the lathe body 101 is mounted in the central portion. Further, a plurality of engaging portions 112a, 112b, 122a, 122b are arranged on the outer peripheral portion of the second opening 10e in the second wall 10c so as to surround the second opening 10e.

In addition, as shown in FIG. 1, the cover body 10 includes a first member 11 having a shape corresponding to the +Z direction side when the cover body 10 is divided on the virtual plane VPL1, and the cover body 10 on the virtual plane VPL1. And a second member 12 having a shape corresponding to the −Z direction side when divided by. Here, the virtual plane VPL1 is one first virtual plane that includes the cylinder axis J2 of the cylindrical portion 10a and is parallel to the cylinder axis J2 direction. As shown in FIGS. 3(A) to 4(B), the first member 11 has a peripheral wall 111b having a shape obtained by dividing the tubular portion 10a by the virtual plane VPL1 described above, and -Y of the peripheral wall 111b. It has a side wall 111a that covers the direction side and a side wall 111c that covers the +Y direction side of the peripheral wall 111b. As shown in FIG. 3A, the side wall 111a is formed with a semicircular cutout 111f that opens in the −Z direction of the side wall 111a, and three engaging portions 112a and 112b are provided. Has been done. The radius L11 of the cutout portion 111f is set based on the outer diameter dimension of the work W1, and is set to a length within the range of 100 mm or more and 110 mm or less, for example. The engagement portion 112a is a first engagement portion arranged such that a central portion in a direction along the circumferential direction of the peripheral wall 111b is located in a virtual plane VPL3 that includes the central axis J3 of the cutout portion 111f and is parallel to the Z axis. It is a department. Further, the engaging portion 112b has a virtual plane VPL41 in which the central portion in the circumferential direction of the peripheral wall 111b includes the central axis J3 of the cutout portion 111f and is inclined by an angle θ1 with respect to the XY plane in FIG. 3A. , The first engaging portion arranged so as to be located in the VPL 42. Here, the angle θ1 is set to an angle in the range of 15 degrees or more and 25 degrees or less, for example. The length between the central axis J3 and the end edges of the engaging portions 112a and 112b on the central axis J3 side is set to a length within a range of 120 mm or more and 125 mm or less, for example. Further, the length L12 from the central axis J3 of the cutout portion 111f to the inner edges of the engaging portions 112a and 112b is set to a length within a range of, for example, 120 mm or more and 125 mm or less, and the engaging portions 112a and 112b have a radial direction. The width L13 is set to a length within the range of 8 mm or more and 1210 mm or less, for example.

As shown in FIG. 3B, the side wall 111c is formed with a semi-circular cutout 111g that opens in the −Z direction of the side wall 111c, and two engaging portions 114 are provided. There is. The radius L14 of the cutout portion 111g is also set based on the outer diameter dimension of the work W1, and is set to a length within the range of 100 mm or more and 110 mm or less, for example. The engaging portion 114 has a virtual plane VPL 51, 52 in which the central portion in the direction along the circumferential direction of the peripheral wall 111b includes the central axis J3 of the cutout portion 111f and is inclined by an angle θ3 with respect to the XY plane in FIG. 3B. It is arranged to be located inside. Here, the angle θ2 is set to an angle in the range of 40 degrees or more and 50 degrees or less, for example. A notch 111d into which a part of the motor unit 103 is fitted is formed at the end of the side wall 111c on the +Z direction side. Further, four through holes 111e, through which the screws 9 are inserted, are formed in the side wall 111c at positions corresponding to the screw holes provided on the −Y direction side of the lathe body 101. As shown in FIG. 4(A), the peripheral wall 111b is formed with a cutout portion 111h which communicates with the cutout portion 111d of the side wall 111c and into which a part of the motor unit 103 is fitted. The supply hole 115 described above is provided through the peripheral wall 111b. Further, the length L15 from the central axis J3 of the cutout portion 111g to the inner edge of the engagement portion 114 is set to a length within a range of, for example, 120 mm or more and 125 mm or less, and the radial width L16 of the engagement portion 114 is For example, the length is set within the range of 8 mm or more and 1210 mm or less.

As shown in FIGS. 3(A) to 4(B), the second member 12 has a peripheral wall 121b having a shape obtained by dividing the tubular portion 10a on the virtual plane VPL1 described above, and -Y of the peripheral wall 121b. It has a side wall 121a that covers the direction side and a side wall 121c that covers the +Y direction side of the peripheral wall 121b. As shown in FIG. 3(A), the side wall 121a is provided with a semicircular cutout 121f that opens in the +Z direction of the side wall 121a, and three engaging portions 122a and 122b are provided. ing. The engagement portion 122a is a first engagement portion arranged so that the central portion in the direction along the circumferential direction of the peripheral wall 111b is located in a virtual plane VPL6 that includes the central axis J4 of the cutout portion 121f and is parallel to the Z axis. It is a department. Further, the engaging portion 122b includes a virtual plane VPL71 in which the central portion in the direction along the circumferential direction of the peripheral wall 121b includes the central axis J4 of the cutout portion 121f and is inclined by an angle θ2 with respect to the XY plane in FIG. 3A. , VPL 72 is a first engaging portion arranged so as to be positioned inside. Here, the angle θ2 is set to an angle in the range of 15 degrees or more and 25 degrees or less, for example.

As shown in FIG. 3B, the side wall 121c is formed with a semi-circular cutout 121g that opens in the +Z direction of the side wall 121c, and two engaging portions 124 are provided. .. The engaging portion 124 includes virtual planes VPL81 and VPL82 in which the central portion in the direction along the circumferential direction of the peripheral wall 121b includes the central axis J4 of the cutout portion 121f and is inclined by an angle θ4 with respect to the XY plane in FIG. 3B. It is arranged to be located inside. Here, the angle θ4 is set to an angle in the range of 40 degrees or more and 50 degrees or less, for example. Further, four through holes 121e into which the screws 9 are inserted are formed at positions corresponding to the screw holes provided on the −Y direction side of the lathe body 101 on the side wall 121c. As shown in FIG. 4B, the peripheral wall 121b is provided with the discharge port 10f described above. Further, a hinge 128 that supports the lid 125 in an openable and closable manner is provided at a portion on the −X direction side of the outer peripheral portion of the discharge port 10f in the peripheral wall 121b. A locking portion 127 that locks a hook 126 provided at an end portion of the lid 125 on the +X direction side, which will be described later, is provided at a portion on the +X direction side of the outer peripheral portion of the discharge port 10f in the peripheral wall 121b. There is.

In addition, the portable lathe cover 1 is provided with the first member 11 in a state where the first member 11 and the second member 12 are butted to each other so as to form the cover body 10, as shown in FIGS. 1 and 2. The connecting members 113 and 123 that connect the second member 12 are provided. As shown in FIGS. 3A to 4B, the connecting members 113 are provided at both ends of the peripheral wall 111b of the first member 11 in the X-axis direction. The connecting members 123 are provided at both ends of the peripheral wall 121b of the second member 12 in the X-axis direction. The connecting member 123 has a hook shape, as shown in FIG. On the other hand, the connecting member 113 is a lever 113b, a support base 113a that rotatably supports a shaft portion 113d to which the lever 113b is pivotally connected, and an annular shape that is rectangular in a plan view. And a ring 113c rotatably supported with respect to 113b. Then, the connecting member 113 turns the lever 113b in the state in which the ring 113c is hooked on the connecting member 123 as shown by the arrow AR2, thereby forming the peripheral wall 111b of the first member 11 and the peripheral wall 121b of the second member 12. To connect.

Returning to FIG. 1, the lid 125 is provided in the tubular portion 10a and can be in a closed state that covers the discharge port 10f of the cover body 10 and an open state that does not cover the discharge port 10f. The lid 125 has a plate-like shape that is curved along the outer peripheral surface of the tubular portion 10a. An end of the lid 125 on the −X direction side is openably and closably supported via a hinge 128 at a portion on the −X direction side of the outer peripheral portion of the discharge port 10f of the tubular portion 10a. A hook 126 is provided at the end of the lid 125 on the +X direction side. Here, the locking portion 127 of the second member 12 has the same configuration as the connecting member 113, and locks the hook 126 by rotating the lever with the ring hooked on the hook 126. As a result, the lid 125 is maintained in the closed state.

Further, as shown in FIG. 5A, the cover 1 for a portable lathe according to the present embodiment has a disc shape and covers the second opening 10e of the second wall 10c of the cover body 10. The auxiliary cover 2 attached to the cover body 10 is provided. The auxiliary cover 2 is attached to the cover body 10 when the difference between the outer dimensions of the work W2 and the inner diameters of the first opening 10d and the second opening 10e of the cover body 10 is equal to or larger than a preset reference length. It is a first auxiliary cover that is used. The auxiliary cover 2 is provided with a third opening 20a in the center thereof, the inner diameter of which is at least larger than the outer diameter of the workpiece W2 on which the lathe body 101 is mounted. Further, the auxiliary cover 2 is attached to the cover body 10 in a state where the peripheral portion is engaged with the respective engaging portions 112a, 112b, 122a, 122b of the cover body 10. Then, the work W2 is inserted into the third opening 20a of the auxiliary cover 2. In addition, a plurality of engaging portions 212a and 212b are provided on the outer peripheral portion of the third opening 20a in the auxiliary cover 2 so as to surround the third opening 20a. The engaging portions 212a and 212b are second engaging portions for attaching the auxiliary cover 4 described later to the auxiliary cover 2. The auxiliary cover 2 has a first sub-cover 21 attached to the first member 11 and a second sub-cover 22 attached to the second member 12. The first sub-cover 21 is formed with a semi-circular cutout 21a that opens in the -Z direction of the first sub-cover 21, and is provided with three engaging portions 212a, 212b. In addition, the second sub-cover 22 is formed with a semicircular cutout 22a that opens in the +Z direction of the second sub-cover 22, and three engaging portions 222a and 222b are provided. .. The portable lathe cover 1 also includes an auxiliary cover 3 attached to the cover body 10 so as to cover the first opening 10d of the first wall 10b of the cover body 10 as shown in FIG. 5B. .. Like the auxiliary cover 2, the auxiliary cover 3 has a disk shape, and has an opening 30a formed in the center. The auxiliary cover 3 is attached to the cover body 10 in a state where the peripheral portion is engaged with the engagement portion 114 of the cover body 10.

Further, as shown in FIG. 6(A), the portable lathe cover 1 according to the present embodiment has a disc shape, and the auxiliary cover 2 is attached to the cover body 10 with the auxiliary cover 2 attached. The auxiliary cover 4 is attached to the auxiliary cover 2 so as to cover the third opening 20a. The auxiliary cover 4 is a second auxiliary cover attached to the cover body 10 when the amount of protrusion of the work W1 from the lathe body 101 in the +Y direction is equal to or less than a preset reference length. Here, the reference length is, for example, as shown in FIG. 2, a cylinder of a portion in which the length WD1 of the cylindrical portion 10a of the cover body 10 in the cylinder axis J2 direction and the lathe body 101, the movable portion 102, and the tool module 104 are combined. The length is set to be shorter than the difference from the length WD2 in the axis J2 direction. As shown in FIGS. 6(A) and 6(B), the auxiliary cover 4 is attached to the auxiliary cover 2 with its peripheral portion engaged with the engaging portions 212 a, 212 b, 222 a, 222 b of the auxiliary cover 2. .. Further, the auxiliary cover 4 has a third sub cover 41 attached to the first member 11 and a fourth sub cover 42 attached to the second member 12.

As described above, according to the portable lathe cover 1 according to the present embodiment, the cover body 10 has a tubular shape and the tubular portion 10a provided with the discharge port 10f for discharging chips. The first wall 10b that closes the −Y direction side of the tubular portion 10a, the second wall 10c that closes the +Y direction side of the tubular portion 10a, and the lid 125. Here, the first wall 10b is provided with a first opening 10d for inserting the work W1 in the central portion, and the outer peripheral portion of the first opening 10d is fixed to the −Y direction side of the lathe body 101. There is. The second wall 10c is provided with a second opening 10e having an inner diameter larger than at least the outer diameter of the workpiece W1 on which the lathe body 101 is mounted in the central portion. The lid 125 is provided on the tubular portion 10a and can be in a closed state that covers the discharge port 10f and an open state that does not cover the discharge port 10f. Thus, when cutting the work W1, the cutting dust generated from the work W1 can be collected in the cover body 10 by closing the lid 125, and the cutting dust has accumulated to some extent in the cover body 10. By occasionally opening the lid 125, the accumulated cutting chips can be discharged to the outside of the cover body 10. Therefore, it is possible to efficiently process the chips generated when the worker cuts the work W1, and the workability in cutting the work W1 can be improved accordingly. Further, since the scattering of cutting chips can be prevented when the work W1 is cut by the portable lathe 1000, the safety of the operator can be secured.

Further, the cover body 10 according to the present embodiment can be divided into the first member 11 and the second member 12. As a result, the cover body 10 can be easily attached to the lathe body 101, and the workability in cutting the work W1 can be improved accordingly.

Further, the cylindrical portion 10a of the cover body 10 according to the present embodiment is provided with a supply hole 115 for supplying lubricating oil to the tip of the tool 106. As a result, the lubricating oil can be supplied to the tip of the tool 106 without removing the cover body 10 from the lathe body 101, so that the workability of supplying the lubricating oil to the tip of the tool 106 can be improved. it can.

Further, the cover 1 for a portable lathe according to the present embodiment includes an auxiliary cover 2 having a third opening 20a at the center. Thereby, for example, when the difference between the outer diameter of the work W2 and the inner diameter of the second opening 10e of the cover body 10 is large, the gap between the outer peripheral surface of the work W2 and the second opening 10e of the cover body 10 is increased. The resulting gap can be covered with the auxiliary cover 2. Therefore, even if the difference between the outer diameter of the work W2 and the inner diameter of the second opening 10e of the cover body 10 is large, the scattering of the cutting chips generated from the work W2 can be suppressed. There is also an advantage that the auxiliary covers 2 can be attached and detached to accommodate the works W1 and W2 having a plurality of outer diameter dimensions.

Further, the portable lathe cover 1 according to the present embodiment includes the auxiliary cover 4 attached to the auxiliary cover 2 so as to cover the third opening 20 a of the auxiliary cover 2. As a result, when the amount of protrusion of the work W1 from the lathe body 101 in the +Y direction is equal to or less than the reference amount of protrusion described above, the auxiliary covers 2 and 4 can close the second opening 10e of the cover body 10. Therefore, it is possible to prevent the chips generated from the work W1 from scattering toward the +Y direction side of the cover body 10.

Although the embodiments of the present invention have been described above, the present invention is not limited to the configurations of the above-described embodiments. For example, the cylindrical portion 10a of the cover body 10 is not limited to a cylindrical shape, and may be, for example, a rectangular cylindrical shape, an elliptic cylindrical shape, or a polygonal cross section. It may be cylindrical.

In the embodiment, the example in which the cover body 10 is made of a transparent resin has been described, but the material forming the cover body 10 is not limited to the transparent resin, and may be made of a metal such as aluminum or stainless steel. It may be formed.

In the embodiment, an example in which the cover body 10 is divided into two first members 11 and second members 12 has been described, but the present invention is not limited to this, and the cover body 10 is divided into three or more members, for example. May be Alternatively, the cover body 10 may be divided into, for example, the tubular portion 10a, the first wall 10b, and the second wall 10c. In addition, in the embodiment, the auxiliary cover 2 is divided into the two first sub covers 21 and the second sub covers 22, and the auxiliary cover 4 is divided into the two third sub covers 41 and the fourth sub covers 42. The example of division has been described. However, the present invention is not limited to this, and each of the auxiliary covers 2 and 4 may be divided into three or more sub covers.

In the embodiment, an example in which no other auxiliary cover is attached to the auxiliary cover 3 has been described. However, the present invention is not limited to this. An auxiliary cover having a section may be attached. In this case, the auxiliary cover may be attached to the auxiliary cover 3 in a state where the peripheral portion thereof is engaged with the engaging portion 314 of the auxiliary cover 3.

The embodiments and modifications of the present invention (including those described in the note. The same applies hereinafter) have been described above, but the present invention is not limited to these. The present invention includes a combination of the embodiments and the modifications as appropriate, and a combination of the modifications as appropriate.

INDUSTRIAL APPLICABILITY The present invention is suitable for the work of cutting a pipe used at a construction site such as a power generation facility and a factory by a portable lathe.

1: cover for portable lathe, 2, 3, 4: auxiliary cover, 9: screw, 10: cover body, 10a: tubular portion, 10b: first wall, 10c: second wall, 10d: first opening 10e: 2nd opening part, 10f: discharge port, 11: 1st member, 12: 2nd member, 20a: 3rd opening part, 21: 1st sub-cover, 21a, 22a, 111d, 111f, 111g, 111h. , 121f, 121g: notches, 22: second sub-cover, 30a: opening, 41: third sub-cover, 42: fourth sub-cover, 101: lathe body, 101a, 101b: sub-body, 102: movable part , 102a, 102b: sub movable part, 103: motor unit, 104: tool module, 105: tool holder, 106: tool, 111a, 111c, 121a, 121c: side wall, 111b, 121b: peripheral wall, 111e, 121e: through hole , 112a, 112b, 114, 122a, 122b, 124, 212a, 212b, 222a, 222b, 314: engaging part, 113, 123: connecting member, 113a: support, 113b: lever, 113c: ring, 113d, 113e. : Shaft part, 115: Supply hole, 125: Lid, 126: Hook, 127: Locking part, 128: Hinge, 1000: Portable lathe, CL, VPL1, VPL3, VPL3, VPL6, VPL41, VPL42, VPL51, VPL52, VPL71, VPL72, VPL81, VPL82: virtual plane, J1, J3, J4: central axis, J2: cylinder axis, W1, W2: workpiece

Claims (6)

An annular lathe body, and a movable portion that is annular and is disposed at one end side in the thickness direction of the lathe body and that rotates with respect to the lathe body around the central axis along the thickness direction of the lathe body,
A tool module for holding a tool fixed to the movable part for cutting a cylindrical work in a posture in which a tip end part of the tool projects toward the central axis of the lathe body in a direction orthogonal to the central axis of the lathe body. A cover for a portable lathe attached to a portable lathe, comprising:
A discharge port for discharging cutting powder accumulated inside is provided on the peripheral wall of a cylindrical shape, and a cylindrical part in which the lathe body, the movable part and the tool module are arranged inside,
A first opening for closing the one end in the cylinder axis direction of the cylindrical portion and inserting the work in the center is provided, and an outer peripheral portion of the first opening in the thickness direction of the lathe body. A first wall fixed to the other end,
A second wall in which the other end side of the tubular portion in the cylinder axis direction is closed and a second opening portion is provided in the central portion, the inner diameter dimension of which is at least larger than the outer diameter dimension of the work on which the lathe body is mounted; A cover body having,
A lid body that is provided in the tubular portion and that can be in a closed state that covers the discharge port and an open state that does not cover the discharge port;
For example Bei connected to the member, the,
The cover body is
A first member having a shape corresponding to one when the cover body is divided by one first imaginary plane that includes the cylinder axis of the cylindrical portion and is parallel to the cylinder axis direction;
A second member having a shape corresponding to the other when the cover body is divided by the first virtual plane,
The connecting member connects the first member and the second member in a state where the first member and the second member are abutted against each other so as to form the cover body.
Portable lathe cover. A plurality of first engaging portions are arranged on an outer peripheral portion of the second opening in the second wall so as to surround the second opening,
A third opening having a plate-like shape and having an inner diameter larger than at least the outer diameter of the work on which the lathe body is mounted is provided in the central portion, and a peripheral portion engages with each of the plurality of first engaging portions. Further comprising a first auxiliary cover attached to the cover body in a combined state,
The cover for a portable lathe according to claim 1 . An annular lathe body, and a movable portion that is annular and is disposed at one end side in the thickness direction of the lathe body and that rotates with respect to the lathe body around the central axis along the thickness direction of the lathe body,
A tool module for holding a tool fixed to the movable part for cutting a cylindrical work in a posture in which a tip end part of the tool projects toward the central axis of the lathe body in a direction orthogonal to the central axis of the lathe body. A cover for a portable lathe attached to a portable lathe, comprising:
A discharge port for discharging cutting powder accumulated inside is provided on the peripheral wall of a cylindrical shape, and a cylindrical part in which the lathe body, the movable part and the tool module are arranged inside,
A first opening for closing the one end in the cylinder axis direction of the cylindrical portion and inserting the work in the center is provided, and an outer peripheral portion of the first opening in the thickness direction of the lathe body. A first wall fixed to the other end,
A second wall in which the other end side of the tubular portion in the cylinder axis direction is closed and a second opening portion is provided in the central portion, the inner diameter dimension of which is at least larger than the outer diameter dimension of the work on which the lathe body is mounted; A cover body having,
A lid body which is provided in the tubular portion and which can be in a closed state that covers the discharge port and an open state that does not cover the discharge port,
A plurality of first engaging portions are arranged on an outer peripheral portion of the second opening in the second wall so as to surround the second opening,
A third opening having a plate-like shape and having an inner diameter larger than at least the outer diameter of the work on which the lathe body is mounted is provided in the central portion, and a peripheral portion engages with each of the plurality of first engaging portions. Further comprising a first auxiliary cover attached to the cover body in a combined state,
A plurality of second engaging portions are provided on an outer peripheral portion of the third opening portion of the first auxiliary cover so as to surround the third opening portion,
A second auxiliary cover that is plate-shaped and that is attached to the first auxiliary cover in a state where the peripheral portion is engaged with each of the plurality of second engaging portions,
Cover for portable lathe. The tubular portion includes a part of a portion of the tubular portion that intersects with a second virtual plane including a trajectory drawn by the tip portion of the tool in a state where the cover body is fixed to the lathe body. Thus, a supply hole for supplying lubricating oil to the tip of the tool is provided,
The cover for a portable lathe according to any one of claims 1 to 3 . An annular lathe body,
A movable part that is annular and is disposed on one end side in the thickness direction of the lathe body and that rotates with respect to the lathe body about a central axis along the thickness direction of the lathe body,
A tool module for holding a tool fixed to the movable part for cutting a cylindrical work in a posture in which a tip end part of the tool projects toward the central axis of the lathe body in a direction orthogonal to the central axis of the lathe body. When,
A portable lathe provided with a cover for a portable lathe fixed to the lathe body,
The portable lathe cover is
A discharge port for discharging cutting powder accumulated inside is provided on the peripheral wall of a cylindrical shape, and a cylindrical part in which the lathe body, the movable part and the tool module are arranged inside,
A first opening for closing the one end in the cylinder axis direction of the cylindrical portion and inserting the work in the center is provided, and an outer peripheral portion of the first opening in the thickness direction of the lathe body. A first wall fixed to the other end,
A second wall in which the other end side of the tubular portion in the cylinder axis direction is closed and a second opening portion is provided in the central portion, the inner diameter dimension of which is at least larger than the outer diameter dimension of the work on which the lathe body is mounted; A cover body having,
A lid body that is provided in the tubular portion and that can be in a closed state that covers the discharge port and an open state that does not cover the discharge port;
Connected to the member, the possess,
The cover body is
A first member having a shape corresponding to one when the cover body is divided by one first imaginary plane that includes the cylinder axis of the cylindrical portion and is parallel to the cylinder axis direction;
A second member having a shape corresponding to the other when the cover body is divided by the first virtual plane,
The connecting member connects the first member and the second member in a state where the first member and the second member are abutted against each other so as to form the cover body.
Portable lathe. An annular lathe body,
It is annular and is arranged at one end side in the thickness direction of the lathe body with respect to the lathe body.
A movable part that rotates around a central axis along the thickness direction of the lathe body,
A tool module for holding a tool fixed to the movable part for cutting a cylindrical work piece in a posture in which a tip end part of the tool projects toward the central axis of the lathe body in a direction orthogonal to the central axis of the lathe body. When,
A portable lathe provided with a cover for a portable lathe fixed to the lathe body,
The portable lathe cover is
A discharge port for discharging cutting powder accumulated inside is provided on the peripheral wall of a cylindrical shape, and a cylindrical part in which the lathe body, the movable part and the tool module are arranged inside,
A first opening for closing the one end in the cylinder axis direction of the cylindrical portion and inserting the work in the center is provided, and an outer peripheral portion of the first opening in the thickness direction of the lathe body. A first wall fixed to the other end,
A second wall in which the other end side of the tubular portion in the cylinder axis direction is closed and a second opening portion is provided in the central portion, the inner diameter dimension of which is at least larger than the outer diameter dimension of the work on which the lathe body is mounted; A cover body having,
A lid body that is provided in the tubular portion and that can be in a closed state that covers the discharge port and an open state that does not cover the discharge port;
A plurality of first engaging portions are arranged on an outer peripheral portion of the second opening in the second wall so as to surround the second opening,
A third opening having a plate-like shape and having an inner diameter larger than at least the outer diameter of the work on which the lathe body is mounted is provided in the central portion, and a peripheral portion engages with each of the plurality of first engaging portions. Further comprising a first auxiliary cover attached to the cover body in a combined state,
A plurality of second engaging portions are provided on an outer peripheral portion of the third opening portion of the first auxiliary cover so as to surround the third opening portion,
A second auxiliary cover that is plate-shaped and that is attached to the first auxiliary cover in a state where the peripheral portion is engaged with each of the plurality of second engaging portions,
Portable lathe.