JPH07276119A - Electric machining device - Google Patents

Abstract

PURPOSE:To miniaturize an electric machining device and to shorten its overall length by supporting a motor main body on both sides of a cylindrical body arranged on the outside of the motor main body and installing an air cylinder part furnished with a guide block with legs on a lower part of the cylindrical body. CONSTITUTION:An air cylinder part 13 is installed on the outside of a motor main body 12. Integrally structured guide blocks 34, 35 with legs are provided on both sides of this air cylinder part 13. An electric maching device is easily installed at a specified position by inserting a bot, etc., in screw holes 45, 46 formed on these guide blocks 34, 35 with the legs. The both sides of the air cylinder part 13 are fixed by the fixed guide blocks 34, 35 with the legs, and its inside is made to move longitudinally by movement of the air cylinder 13 by an electric motor. Consequently, the overall length of this electric machining device is shortened.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric machining apparatus which can be used for various machining such as drilling, tapping, boring, brushing or honing.

[0002]

2. Description of the Related Art In a conventional electric machining apparatus, a means for advancing and retracting a spindle provided with a tool chuck at its tip and a motor for rotating the spindle are separate bodies, so that the shape becomes large and it is inconvenient to handle. Often occurs. Therefore, as described in Japanese Utility Model Publication No. 44-10545, there has been proposed one in which an air cylinder is attached to the back of a motor that rotationally drives a spindle, and a rotating tool chuck is moved back and forth by the operation of the air cylinder.

[0003]

However, in the drill unit described in Japanese Utility Model Publication No. 44-10545, since the air cylinder is provided at the rear part, the total length of the air cylinder is added to the total length of the motor. Has the problem of becoming longer. Further, when the drill unit is to be attached to another device or the like, a mounting member for fixing the drill unit in a sandwiched state or a screwed state is required, which is troublesome, and a new mounting member is attached. If you do, there is a problem that the price will increase as a whole. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an electric machining apparatus that is small in size and short in overall length, easy to install, and inexpensive in manufacturing cost.

[0004]

A method according to the above-mentioned object.
The electric processing apparatus described has a cylindrical case on the outside, an electric motor inside, a spindle directly connected to the rotor of the electric motor at the front, and a terminal box for the electric motor at the rear. Motor main body, a tool chuck attached to the tip of the spindle, a ring-shaped piston fixed to the center of the motor main body, a cylindrical body arranged outside the piston, and both sides of the cylindrical body. And an air cylinder part provided with front and rear leg guide blocks integrally supporting the motor body so as to be movable back and forth and further having a mounting seat with a screw hole formed in the lower part thereof, and the rear side It has a guide rod having its front end attached to a legged guide block, and a detent that is fixed to the motor body and slidably moves the guide rod.

[0005]

In the electric machining apparatus according to the present invention, the air cylinder portion is attached to the outside of the motor body, and the guide blocks with legs are integrally provided on both sides of the air cylinder portion. By inserting a bolt or the like into the screw hole formed in the legged guide block, the electric machining apparatus can be easily attached at a predetermined position. Both sides of the air cylinder are fixed by the fixed guide blocks with legs, and the electric motor is moved back and forth in the inside by the movement of the air cylinder portion, so that the total length is shortened. Further, since the leg having the mounting seat is integrally formed at the lower part of the block that holds the cylinder of the air cylinder portion at a predetermined position and slidably supports the motor body, the structure is simplified. Therefore, the manufacturing cost can be reduced.

[0006]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. 1 is a half sectional view of an electric processing apparatus according to an embodiment of the present invention, FIG. 2 is a rear view of the same, and FIG. 3 is a plan view of a guide rod mounting member.

As shown in FIGS. 1 to 3, an electric machining apparatus 10 according to an embodiment of the present invention has a tool chuck 11 at the tip.
A motor main body 12 to which is attached, an air cylinder portion 13 formed outside the motor main body 12, and a guide rod 14 attached to a rear portion of the air cylinder portion 13.
And a detent 15 guided by the guide rod 14. These will be described in detail below.

In the motor body 12, the central rotor shaft serves as a spindle 16 and bearings 17, 18 are provided on both sides, which are connected by a cylindrical case 19. A bearing 20 is arranged inside the bearing 17, and the bearing 20 is fixed at a predetermined position by large and small collars 21, 22 and a screwed bearing retainer 23, and an oil seal 24 is attached to the bearing retainer 23. ing. A bearing 25 fixed at a predetermined position is mounted on the bearing 18.

The rotor 2 mounted on the spindle 16
A stator 27 is provided on the outer side of 6 with a slight gap, and an AC voltage is applied by a lead wire (not shown) wired to the connection terminal 28 at the rear portion. The rotor 26 and the stator 27 form an electric motor.

An air cylinder portion 13 is provided on the outside of the cylindrical case 19, and a piston 29 of the air cylinder portion 13 is sealed at a predetermined position of the cylindrical case 19 by an O-ring, and a plurality of bolts are provided. A seal ring 31 fixed by 30 and the seal ring 31
And a packing 32 housed in the circumferential groove.

Further, front and rear legged guide blocks 34, 35 for fixing both sides of the cylindrical body 33 of the air cylinder portion 13 and supporting the motor main body 12 in a laterally movable manner are provided. An air supply port 36 is formed in the attached guide block 34, and a dust packing 37, a U packing 38, and an O ring 39 for sealing are attached. On the other hand, the rear guide block 3 with legs
Reference numeral 5 denotes an O-ring 4 for sealing with the cylindrical body 33.
0, a dust packing 41, and a U packing 42 are provided, and the upper part is a flat surface, and the guide lot mounting metal fitting 43 is screwed as shown in FIG. As shown in FIG. 3, the guide rod mounting bracket 43 is formed with the other air supply portion 44 of the air cylinder portion 13, and the guide rod 14 is mounted rearward.

The legged guide blocks 34, 35 are made of aluminum, and mounting seats 47, 48 having paired screw holes 45, 46 are provided in the lower portion. As described above, in this embodiment, the portion that supports the motor main body 12 so as to be movable back and forth, the portion that serves as the metal fittings on both sides of the air cylinder portion 13, and the portions of the mounting seats 47 and 48 are integrally formed, The structure is simplified and the manufacturing price is low.

A screw 49 is provided at the rear of the motor body 12.
The detent 15 which is fastened by means of the above is attached, and the linear bearing 50 mounted on the guide rod 14 is provided on the detent 15. In addition, a bolt is screwed into the female screw hole 51 formed in the upper portion of the rotation stopper 15 so as to act as an adjustable stopper.

Therefore, when the electric machining apparatus 10 is used, first, the electric machining apparatus 10 is mounted at a predetermined position by utilizing the screw holes 45 and 46 formed in the mounting seats 47 and 48, and then, Then, a predetermined drill 52 is attached to the tool chuck 11 attached to the tip of the spindle 16. In this state, put compressed air from the air supply port 36,
When the motor body 12 is retracted to a predetermined position, electricity is supplied to the motor body to rotate the drill 52, and when the air supply port 36 is opened and air is supplied from the air supply port 44, the drill 52 is It is possible to move forward and drill a hole of the drill diameter in the work piece.

[0015]

As is apparent from the above description, the electric machining apparatus according to claim 1 has the air cylinder portion attached to the outside of the motor body, so that the overall length is shortened. Since the guide blocks with legs having an integral structure are provided on both sides of the structure, the structure can be simplified and the manufacturing cost can be reduced. Further, since the front and rear guide blocks with legs, which are integrally provided with the mounting seats, directly support the motor body and the air cylinder portion, the mounting becomes firm.

[Brief description of drawings]

FIG. 1 is a half sectional view of an electric processing apparatus according to an embodiment of the present invention.

FIG. 2 is a rear view of the same.

FIG. 3 is a plan view of a guide rod mounting member.

[Explanation of symbols]

 10 Electric processing device 11 Tool chuck 12 Motor main body 13 Air cylinder part 14 Guide rod 15 Non-rotating 16 Spindle 17 Bearing 18 Bearing 19 Cylindrical case 20 Bearing 21 Color 22 Color 23 Bearing retainer 24 Oil seal 25 Bearing 26 Rotor 27 Stator 28 Connection Terminal 29 Piston 30 Bolt 31 Seal ring 32 Packing 33 Cylindrical body 34 Guide block with leg 35 Guide block with leg 36 Air supply port 37 Datos packing 38 U-packing 39 O-ring 40 O-ring 41 Dust packing 42 U-packing 43 Guide rod mounting bracket 44 Air supply part 45 Screw hole 46 Screw hole 47 Mounting seat 48 Mounting seat 49 Screw 50 Linear bearing 51 Female screw hole 52 Drill

Claims (1)

[Claims] 1. A cylindrical case is provided on the outer side, an electric motor is provided inside, a spindle directly connected to a rotor of the electric motor is provided at a front portion, and a terminal box of the electric motor is provided at a rear portion. A motor main body, a tool chuck attached to the tip of the spindle, a ring-shaped piston fixed to the center of the motor main body, a cylindrical body arranged outside thereof, and provided on both sides of the cylindrical body, respectively. An air cylinder part having front and rear leg guide blocks integrally supporting the motor body so as to be movable back and forth, and further having a mounting seat having a screw hole formed in the lower part thereof; and the rear leg part. An electric drive unit comprising: a guide rod having a front end attached to a guide block; and a detent that is fixed to the motor body and slidably moves the guide rod. Apparatus.