JPH064212B2 - Table feeder - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a table feed device, and more specifically, to a drive shaft of a table moving mechanism, which is manually fed, automatically fed, and fed at a single switching device. The present invention relates to a table feeding device that can be controlled and can fix a table and a handle for manual feeding when stopped. (Prior Art) Conventionally, when the work table of a machine tool such as a forming surface grinder is switched from manual reciprocating movement to reciprocating movement by a motor and vice versa, the motor is turned on in addition to the switch operation. It was a complicated work that required the operation of the -OFF switch and the rotation speed adjustment knob. Moreover, when the work is attached to or detached from the table, it is necessary to operate a device for immobilizing the table. (Problems to be solved by the invention) As described above, various push buttons and tools are used to switch from automatic feed to manual feed, fix the table in a stationary state, and adjust the moving speed of the table. At that time, there were inconveniences such as operational mistakes, poor work efficiency, and adverse effects on safe work. (Means for Solving the Problem) In view of the conventional problems as described above, the present invention rotatably supports a main shaft for reciprocating a table rotatably supported by a machine base on the machine base. A manual handle and a pulley rotated by a motor are rotatably mounted on the main shaft, and both ends of a slider mounted on the main shaft are slidably mounted between the manual handle and the pulley. , A clutch that can be disconnected and connected to the manual handle and the pulley, respectively, and a shaft that is orthogonal to the main shaft is rotatably supported by the machine base, and the outer end of this shaft is used for switching. A lever is provided, a cam for switching the position of the slider is provided at the inner end portion of the shaft, and a volume for controlling the motor is provided so as to be interlocked with the shaft. After connecting the handle and the slider by rotating the lever in the direction of connecting the slider, the protruding member for pressing and fixing the slider in the immovable state by further rotating the lever in the same direction. Is provided in the cam. (Embodiment) FIG. 1 shows a forming surface grinder as an embodiment of the present invention, and FIG. 2 is a plan view thereof. The three handles protruding to the front of the machine stand are shown in Fig. 1 and 2
Manually move the table 3 from left to right in the figure X
An axis manual handle 5, a Y axis manual handle 7 for manually moving the table 3 up and down in FIG. 2, and a Z axis manual handle 11 for raising and lowering the grinding wheel 9 is provided on the rightmost side. The leftmost part of FIG. 1 shows that the motor 13 for reciprocating the table 3 in the X-axis direction is an accessory device 15 such as a speed reducer.
Is. Shown in FIG. 3 is the switching device 17, which includes the lever 1
One 9 is projected, and it is rotated left and right to switch between manual feeding and automatic feeding. As shown in FIGS. 4 and 5, a disk 21 for horizontally holding the lever 19 has a lid plate 23 fixed to a machine base fixed to an upper portion through which a shaft 25 penetrates, and an upper surface of the lid plate 23. There are provided a proper number of conical holes 27 for click-stops. A steel ball 29 and a spring 31 are provided on a part of the lower surface of the disk 21 to form a deep hole 33 corresponding to the conical hole 27. A cam 35 is horizontally fixed to the lowermost end of the shaft 25, and a gear 37 is provided on the cam 35. As is apparent from FIG. 5, the gear 37 meshes with the gear 41 of the volume 39, and when the disk 21 occupies a constant angular position (automatic part shown in FIG. 3), the motor is changed by a slight angle change. The rotation speed of 13 is changed. The X-axis manual handle 5 is rotatably mounted on an X-direction drive main shaft 43, which is a drive shaft of a table moving mechanism, by an outer cylinder, and has a clutch device 45 such as a dog clutch at an inner end. A pulley 49 is arranged at a position opposite to the X-axis manual handle 5 of the X-direction drive spindle 43. The pulley 49 is passed through the motor 13, the auxiliary device 15 such as a speed reducer, and the timing belt 47, for example. The rotation is transmitted to the pulley 49, and a clutch device 51 is provided at the left end of the pulley 49 in FIG. Between the above-mentioned clutch devices 45 and 51, there is provided a slider 55 which covers the X-direction drive main shaft 43 in an outer cylindrical shape and is guided by the key 53 so as to be movable left and right in FIG. A clutch device 57 that can be engaged and disengaged with the clutch device 45 is provided at the end of the slider 55 on the X-axis manual handle 5, and a clutch device 59 that can be engaged and disengaged with the clutch device 51 at the end of the pulley 49.
Is provided. A slide plate 63 having an elongated hole 61 is provided on the lower surface of the lid plate 23 biased leftward in FIG. 4 by a spring 65, and the shaft 25 penetrates the elongated hole 61. A shaft 67 is vertically fixed to the slide plate 63 near the end on the spring 65 side, and a dog 69 at the upper end is provided corresponding to a micro switch 71 for turning the motor 13 on and off. A needle bearing 73 is provided below the shaft 67 at a position where it abuts on the cam 35, and below the shaft bearing 67, the slider 5 is provided.
There is provided a radial bearing 77 which is loosely engaged with the annular groove 75 provided in No. 5 and is rotatable. At a suitable position on the lower surface of the cam plate 35 (see FIG. 3), the protrusion member 7 as a locking mechanism for locking the rotation of the X-direction drive main shaft 43, which is the drive shaft, together with the slider 55.
9 is provided. As is apparent, since the equalizing members 79 are horizontally rotated while maintaining the same height, when the X-direction driving main shaft 43 and the slider 5 are located on the center line of the X-direction driving main shaft 43.
5 and 5 are pressed down to lock the rotation of the X-direction drive main shaft 43. A pinion gear 81 is fixed to the X-direction drive spindle 43 at the right end in FIG. 4, and is engaged with, for example, an internal gear 85 of the wire drum 83. Since the device of the embodiment of the present invention is configured as described above, the lever 19 is rotated to adjust the pointer 87 of the switching device 17 to the manual position as shown in FIG. As a matter of fact, as shown in FIG. 4, the shaft 67 has the spring 6
It occupies the leftmost position due to the biasing force of 5. That is, since the clutch devices 45 and 57 are meshed with each other, the slider 5 is rotated by rotating the X-axis manual handle 5.
5, the X-direction drive spindle 43 is rotated in any direction via the key 53. Therefore, the wire drum 83 is driven via the pinion gear 81 and the internal gear 85, and the table 3 is moved in the axial direction. When the lever 19 is further rotated in the same direction to bring the pointer 87 of FIG. 3 into the locking position, the protruding member 79 provided downward on the cam 35 is most clearly seen in FIG.
Lowers the slider 55 and the X-direction drive main shaft 43 to fix them in an immovable state. When the lever 19 is rotated in the opposite direction to rotate the pointer 87 in FIG. 3 to the automatic position, first, the protruding portion of the cam 35 pushes the needle bearing 77 portion to the right in FIG. Then, the radial bearing 77 slides rightward in the annular groove 75. Therefore, the clutch devices 45 and 57 are disengaged,
At the same time when the clutch devices 51 and 59 are engaged, the dog 69 turns on the micro switch 71 and the motor 13 is started. When the lever 19 of the switching device 17 of FIG. 3 is further rotated in the clockwise direction, the gear 37 on the cam 35 drives the gear 41 to rotate the shaft of the volume 39 to increase the rotation speed, for example. become. Since all of these act reversibly, the operation of switching the motor 13 to the OFF state after gradually reducing the moving speed of the table 3, then switching to the manual mode, and further to the locked state is performed by the lever 19 of the switching device 17. It can be controlled freely just by operating. (Effects of the Invention) As will be understood from the above description of the embodiments, in short, the present invention rotates the main shaft 43 for reciprocating the table 3 supported by the machine base so that the table 3 can reciprocate. The handwheel 5 and the pulley 49 rotated by the motor 13 are rotatably attached to the main shaft 43 and slide on the main shaft 43 between the manual handle 5 and the pulley 49. Slider 5 mounted freely
Clutches 57 and 59, which can be freely connected and disconnected with respect to the manual handle 5 and the pulley 49, are provided at both ends of the shaft 5, and a shaft 25 provided orthogonally to the main shaft 43 is rotatably supported by a machine base. At the same time, a switching lever 19 is provided at the outer end of the shaft 25, a cam 35 for switching the position of the slider 55 is provided at the inner end of the shaft 25, and a potentiometer for controlling the motor 13 is provided. 39
Is provided in conjunction with the shaft 25, and the lever 19 is rotated in a direction connecting the handle 5 and the slider 55 to connect the handle 5 and the slider 55, and then the lever 19 is moved in the same direction. Further, the cam 35 is provided with a projecting member 79 for pressing and fixing the slider 55 in an immovable state by further rotating operation. As is apparent from the above configuration, in the present invention, the main shaft 43 can be rotated by the manual handle 5 by moving and connecting the slider 55, which is slidably supported by the main shaft 43, to the manual handle 5 side. , The slider 55
The main shaft 43 can be rotated by the motor 13 via the pulley 49 by moving and connecting to the pulley 49 side. Since the shaft 25 having the cam 35 for switching the position of the slider 55 and the volume 39 for controlling the motor 13 are interlockingly connected, the shaft 25
The rotation of the motor 13 can be controlled by the lever 19 provided in the. Further, after the lever 19 is rotated and connected in the direction of connecting the manual handle 5 and the slider 55, the lever 19 is further rotated in the same direction, so that the protruding member 79 provided on the cam 35 is used. Since the slider 55 is pressed and fixed in an immovable state, the handle 5 and the table 3 can be held in a fixed state when the machine is stopped. That is, according to the present invention, the manual feed, the automatic feed, the control of the feed speed, and the fixing of the handle 5 and the table 3 at the time of stop can be performed only by operating one lever 19.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a front view of a forming surface grinding machine as an example machine in which the present invention is implemented, FIG. 2 is a plan view of the same as above, FIG. 3 is a plan view of a switching device of the same above, and FIG. Is a configuration diagram from the switching device to the wire drum. FIG. 5 is a sectional view taken along the line VV of FIG. (Explanation of Reference Signs Representing Main Parts of Drawing) 1 ... Forming surface grinder 5 ... X-axis manual handle 17 ... Switching device 25 ... Shaft 35 ... Cam 39 ... Volume 43 ... X-direction drive spindle 55 ... Slider 79 ... Projecting member.

Claims (1)

Claims: A main shaft (43) for reciprocating a table (3) reciprocally supported by a machine base is rotatably supported by the machine base, and a manual handle (5) and a motor are provided. A pulley (49) rotated by (13) is rotatably mounted on the main shaft (43), and slides on the main shaft (43) between the manual handle (5) and the pulley (49). The manual handle (5) and the pulley (49) are attached to both ends of the slider (55) which is freely attached.
Clutches (57, 59) which can be freely connected and disconnected with respect to each other, and a shaft (2) provided orthogonal to the main shaft (43).
5) is rotatably supported by the machine base, a switching lever (19) is provided at the outer end of the shaft (25), and the slider (55) is provided at the inner end of the shaft (25). Is provided with a cam (35) for switching the position, and a volume (39) for controlling the motor (13) is provided in interlocking connection with the shaft (25), and the handle (5) and the slider (55) are provided. ) To the lever (1
9) rotate the handle (5) and slider (55).
After connecting the and, the cam (35) is provided with a protruding member (79) for pressing and fixing the slider (55) in an immovable state by further rotating the lever (19) in the same direction. Table feeding device characterized in that.