JPH0746487Y2 - Router machine spindle base tightening and fixing device - Google Patents

Description

[Detailed Description of the Invention] [Industrial application] The present invention is a spindle base of a router machine in which a spindle equipped with a machining blade is moved from a standby position to a working position and fixed using a cylinder. Tightening and fixing device.

[Prior Art] As a conventional router machine of this type, the actual router is Sho 60-14903.
As described in Japanese Patent Publication, an elongated hole is formed in a rod for raising and lowering a tool changing sile, and the tool changing sile is supported through a pin that is inserted into the elongated hole, or the lower end of the rod is lowered by this rod. The tip of the rotating lever is pivotally attached, and an eccentric cam that rotates by the rotation of the lever is provided at the end of the lever. It has been proposed that the tool changing siles are fixed to the upper and lower guide siles by pressing them against a strip.

[Problems to be solved by the invention] However, in this router machine, the rod is exclusively used for raising or lowering, and a stopper is always required at the moving end, and further, the rod is tightened at the moving end for aligning the blade. When the attachment is released, there is a problem that the versatility is low because it has a special structure that has a fundamental limitation such as the need to release the fluid pressure applied to the moving cylinder itself.

The present invention is designed to automatically perform the tightening and fixing operation between the spindle base and the guide base in conjunction with the movement of the spindle base due to the movement of the spindle moving cylinder, and to release the tightening operation when necessary. It is an object of the present invention to provide a spindle base tightening and fixing device for a router machine, which can be performed by one-touch manual operation.

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a cylinder for moving a spindle of a spindle head from a standby position to a working position, and a pressure from a pressure fluid supply source. A solenoid valve for supplying fluid to the cylinder for moving the spindle, a spindle base connected to the spindle, a tightening cylinder for tightening and fixing between the spindle base and the guide base, and A switching valve for supplying a pressure fluid from a pressure fluid supply source, the switching valve being driven by the pressure fluid from the spindle moving cylinder immediately after the solenoid valve is driven to end the movement of the spindle by the spindle moving cylinder. The spool is operated to supply the pressure fluid from the pressure fluid supply source to the tightening cylinder to automatically perform the tightening and fixing operation.

Further, the switching valve is provided with a knob for manually releasing the tightening fixation on a pin for moving the spool.

[Operation] According to the present invention, when the spindle base moves to the working position by moving the spindle from the standby position to the working position,
Immediately after completion of this movement, pressure fluid is supplied from the switching valve to the tightening cylinder to drive the piston rod of the cylinder, which rotates the clamp rod and presses the gib to automatically tighten the spindle base to the guide base. It can be fixed so that vibration etc. during machining can be removed to obtain a highly precise machined surface, and when it is necessary to align the cutting tool with the machining reference position, select the switching valve By operating, the pressure fluid in the fixed cylinder can be discharged from the switching valve, and the fastening and fixing of the spindle base can be temporarily released.

[Embodiment] Referring to FIG. 1 and FIG. 2, in a main spindle base tightening and fixing device of a router machine according to an embodiment of the present invention, a main spindle moving cylinder 1 is mounted on an upper portion of a cylinder support 2. A screw member 4 is fixed to the piston rod 3 of the moving cylinder 1. The screw 5a at the upper end of the screw rod 5 is screwed into the central screw hole of the screw member 4, and the worm gear 6 is fixed to the lower end of the screw rod 5. Further, a worm (not shown) is engaged with the worm gear 6,
The worm is fixed to one end of the handle shaft 7, and the handle 8 is fixed to the other end of the handle shaft 7. Further, bearings 9 and 10 are mounted in the middle below the screw rod 5, and a bearing case 11 is mounted via the bearings 9 and 10. Spindle base on this bearing case 11
12 is fixed, and as shown in Fig. 3, the spindle base
The projection 13a of the guide base 13 fixed to the cylinder support 2 is fitted into the groove 12a of the twelve. This spindle base 12
Adjust the clearance between the guide base 13 and the guide base 13 as shown in Fig. 3.
This is performed by inserting 14 between the spindle base 12 and the guide base 13, fitting the adjusting screw 15 into the screw hole of the spindle base 12, pressing the gib 14, and tightening and fixing with the lock nut 16. A motor 17 is fixed to the spindle base 12, and a tool 19 is attached by a collet chuck 18 attached to the lower end of the spindle of the motor 17, and the tool 19 is attached.
A dust collecting brush 20 for collecting cutting debris and preventing scattering is attached around the. The groove 13b of the guide base 13 is a portion to be mounted on a lateral beam that moves the head of the router machine in the lateral direction.

As shown in FIG. 2, a fixing cylinder 21 is mounted on the main shaft base 12 below the bearing case 11, and the tip of the piston rod 22 of the fixing cylinder 21 is in contact with one end of the clamp lever 24. . The piston rod
22 is a piston rod when the fixing cylinder 21 is not operating.
A spring 23 for returning 22 is provided. The clamp lever 24 is rotatably supported by a center pin 25 as shown in FIG. Further, as shown in FIG. 5, a pressing screw 26 is screw-fitted to the other end of the clamp lever 24, one end of the pressing screw 26 contacts the gib 14, and the other end is fixed with a lock nut 27. There is.

Further, as shown in FIG. 2, a switching valve used in the present invention.
Reference numeral 28 includes a valve block 29 and an operation block 30. The valve block 29 is provided with three connection ports 29a, 29b, 29c, and the spool 3 for switching these connection ports 29a, 29b, 29c.
1 is constantly urged toward the operation block 30 by a spring 32 'supported by a cap 32. Also, operation block 30
Is equipped with a pilot pressure connection port 30a, and a pin 33 is slidably mounted in the center hole of the operation block 30.
The knob 34 is fixed to the outer end of 33. Grooves 33a and 33b are formed near the center of the pin 33.
A ball 35 is engaged with one of 33a and 33b, and the ball 35 is constantly pressed toward the pin 33 side by a spring 36. Further, the connection port 29a of the valve block 29 is connected to the fixing piston 21 via the pipe 37, the connection port 29b is connected to the pressure fluid supply source 39 via the pipe 38, and further, the discharge port 29c is connected to the valve block 29. Is provided. Also, the pressure fluid supply source 39
Is connected to a connection port 41a of a solenoid valve 41 via a pipe 40. Furthermore, the solenoid valve 41 has outlets 41b, 41c and a connection port 41.
d, 41e and discharge ports 41b, 41c are provided, the connection port 41d is connected to one connection port of the cylinder 1 via a pipe 42,
The connection port 41e is connected to the flow rate adjustment valve 44 via the pipe 43, and the flow rate adjustment valve 44 is connected to the other connection port of the spindle moving cylinder 1 and the pilot pressure connection port 30a of the operation block 30 via the pipe 45. It is connected.

Next, the operation of this embodiment will be described. (1) In the state of FIG. 2, the connection port 41e of the solenoid valve 41 is connected to the connection port 41a, the pressure fluid of the pipe 40 is the pipe 43, and the flow rate adjustment is performed. Valve 44
To the pipe 45 via the operation block 30 of the switching valve 28.
Switch valve 2 connected to pilot pressure connection port 30a
Move the spool 31 of 8 to the opposite side of the operation block 30,
Although the pressure fluid of the pipe 38 is connected to the connection port 29b, it is blocked by the spool 31 and the connection port 29a connected to the pipe 37 is connected to the discharge port 29c to provide a fixing cylinder.
Since the fluid to act 21 has been discharged, the piston 22 has been pushed back by the spring 23 and is not clamped. Further, the pipe 45 is connected to the piston rod 3 side of the spindle moving cylinder 1, and the connection port on the opposite side of the spindle moving cylinder 1 is connected to the connection port 41d via the pipe 42, and the connection port 41d. Is connected to the discharge port 41b, the piston rod 3 is biased in a state of being pulled in with respect to the spindle moving cylinder 1, and therefore the spindle is
17 is biased to the standby position.

(2) Next, the solenoid valve 41 is switched to connect the connection port 41a to 41d,
When 41e is connected to the discharge port 41c, the pressure fluid of the pipe 40 flows into the pipe 42 to push out the piston rod 3 of the cylinder 1 for main spindle movement, and the other piston rod 3
Since the connection port on the side is connected to the pipe 45, the flow adjustment valve
Since the piston rod 3 is connected to the connection port 41e via the pipe 43 and the discharge port 41c, the piston rod 3 is pushed out and the spindle 17 is moved to the working position. However, since the discharge amount of the discharged fluid in the pipe 45 is regulated by the flow rate adjusting valve 44, a back pressure is generated in the pipe 45 while the piston rod 3 of the spindle moving cylinder 1 is moving, Since the pressure acts as the pilot pressure of the switching valve 28, the switching valve 28 fixes the pressure fluid in the pipe 38 to the fixing cylinder.
Since it is not sent to the 21 side, the spindle base 12 can be easily moved to the working position, that is, to the stroke end of the piston rod 3 of the spindle moving cylinder 1. Here, when the piston rod 3 reaches the stroke end, the fluid in the pipe 45 continues to be discharged, so that the back pressure disappears, so that the pilot pressure acting on the switching valve 28 becomes zero, as shown in FIG. As described above, the spool 31 is switched to the operation block 30 side by the spring 32 ', and the pressure fluid in the pipe 38 passes through the connection ports 29b to 29a and the pipe 37 and is used as a fixing cylinder.
Work to 21 and perform the tightening and fixing operation. (3) To return the spindle 17 from the working position to the standby position, that is, to retract the piston rod 3 of the spindle moving cylinder 1, place the solenoid valve 41 in the state of the solenoid valve 41 described in (1). It can be returned to the original position by switching.

(4) Next, at the working position described in (2), the spindle
In order to adjust the position of 17, the knob 34 of the switching valve 28 is pushed to move the spool 31 in the direction opposite to the operation block 30 as shown in FIG. 7, so that the pressure fluid on the pipe 38 side is blocked and fixed. Since the fluid in the pipe 37 connected to the work cylinder 21 is discharged, the fastening fixation by the sillinder 21 is released, and the handle 8 can be rotated to adjust the position of the main shaft 17. When the position adjustment is completed, if the knob 34 of the switching valve 28 is pulled to bring it to the state shown in FIG. 6, the clamping and fixing by the cylinder is performed again.

(5) Further, even if the knob is not returned to the state in (4), if the solenoid valve 41 is operated in the state of (3) (in the operation of the router machine, the operations of (1) and (2) will be performed). The pilot pressure acting on the pilot connection port 30a of the switching valve 28 also has the effect of pushing the pin 33 back to the pinching side, so that the pin 33 automatically returns to its original position.

In this switching valve 28, the fixing cylinder 21 is manually
When it is desired to release the pressure fluid, the spool 31 is moved in the direction opposite to the operation block 30 by pushing the knob 34 as shown in FIG. 7, and the connection ports 29a and 29c can be connected. Also, pulling the knob 34 causes the spring of the valve block 29 to
The spool 31 is pushed by 32 ', the connection ports 29a and 29b are connected, and the pressure fluid can be supplied from the pressure fluid supply source 38 to the cylinder 21.

Further, in the above embodiment, the fixing cylinder 21 is provided on the side of the main shaft base 12 immediately below the bearing case 11, but the fixing cylinder 21 is provided at another place, for example, the guide base.
It goes without saying that it may be provided on the 13th side. Further, in the description of the above embodiment, the spool is moved by pushing and pulling the knob. However, the spool is operated by rotating the knob and rotating the cam, and the spring is used to return the spool. The cam can also be returned by.

[Advantages of the Invention] Since the present invention is configured as described above, the spindle base is smoothly moved and firmly clamped and fixed to the guide base, and sliding between the spindle base and the guide base is automatically performed. It is possible to perform high-precision router processing by eliminating vibrations in the gap between the surfaces, and at the time of adjusting the height of the blade,
The tightening and fixing can be released by a simple one-touch operation of the switching valve, and even if the switching valve is not restored, the tightening and fixing operation can be automatically restored. The operation can produce a great effect.

[Brief description of drawings]

FIG. 1 is a side view of a router machine according to an embodiment of the present invention, FIG. 2 is a front view with a part of FIG. 1 removed, FIG. 3 is a sectional view of a motor part of FIG. 1, and FIG. 1 is a partial sectional view showing the relationship between the spindle base and the guide base, FIG. 5 is a partial sectional view showing the relationship between the clamp lever, the spindle base and the guide base of FIG. 1, and FIG. 6 is the switching of FIG. FIG. 7 is a sectional view showing one operation of the valve, and FIG. 7 is a sectional view showing another operation of the switching valve of FIG. 11 …… Bearing case, 12 …… Spindle base, 13 …… Guide base, 14 …… Give, 15 …… Adjustment screw, 16 …… Lock nut, 21 …… Fixing cylinder, 22 …… Piston rod, 23 ...... Spring, 24 …… Clamp lever, 25 …… Center pin, 26 …… Pressing screw, 27 …… Lock nut,
28 ... Switching valve, 29 ... Valve block, 30 ... Operation block, 31 ... Spool, 32 ... Spring, 33 ... Pin, 34 ...
… Pick, 35 …… ball, 36 …… spring.

Claims (2)

[Scope of utility model registration request] 1. A spindle moving cylinder configured to move a spindle of a spindle head from a standby position to a working position, an electromagnetic valve for supplying a pressure fluid from a pressure fluid supply source to the spindle moving cylinder, and the spindle. A main shaft base connected to the main shaft base, a guide base for restricting and holding a movement with respect to the main shaft base, a tightening cylinder for tightening and fixing the main shaft base and the guide base, and Consisting of a switching valve that supplies pressure fluid from a pressure fluid supply source,
Immediately after the movement of the spindle by the spindle moving cylinder by driving the solenoid valve, the spool of the switching valve is operated by the pressure fluid from the spindle moving cylinder, and the pressure fluid from the pressure fluid supply source is supplied to the spool. A spindle base tightening and fixing device for a router machine, which is automatically supplied to a tightening cylinder to perform a tightening and fixing operation. 2. The spindle base tightening / fixing device for a router machine according to claim 1, wherein the switching valve has a knob for manually releasing the tightening / fixing on a pin for moving the spool.