JPS62152606A - Drilling machine - Google Patents

Abstract

PURPOSE:To eliminate the necessity for providing an equipment of two sets of machines so as to reduce floor space, by point symmetrically drilling holes, whose axial lines tilt in two directions with respect to a machined surface of a work, turning the work by 180 deg. in the same machined surface. CONSTITUTION:A work W is pressed to be supported by clampers 8 and clamping pins 7 so that the work moves rotating in a direction of the axial line at a right angle with a tilt surface 3. Drilling in one direction is performed by tools 12 on machining heads 10 serving for multi spindles. Next the work W is turned 180 deg.C about the axial line, placed at a right angle with a tilt surface part 5, serving as the center by an actuator unit 13, and drilling in the other direction is performed. Accordingly, tilt holes in the two directions can be drilled by the same machine.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention particularly relates to a processing device for drilling holes whose axes are inclined in two directions with respect to the processing surface of a workpiece in a point-symmetrical manner within the same processing surface. It is something.

Prior Art> When drilling a hole in a workpiece, as shown in FIGS. 5 and 6, the axis O of a hole with a required pitch e to be drilled in the machined surface of the workpiece W is aligned with the machined surface as a horizontal plane. The center line of the workpiece W is
Two holes 11+ that are point symmetrical with X in the center, If! may be processed.

<Pressure point to be solved by the invention> When the above-mentioned hole drilling is performed, the spindle head is tilted in two directions so that the spindle axis corresponds to the axis O of the holes Ill and H2. Therefore, there is a problem that not only is the equipment cost of the processing machines expensive, but also that a large amount of floor space is required for installing the machines.

Means for Solving the Problems 2〉 The present invention solves the above-mentioned conventional problems, and its main feature is that holes whose axes are inclined in two directions with respect to the machined surface of the workpiece can be formed within the same machined surface. A processing machine that performs drilling in a point-symmetrical manner, the frame having an inclined surface in a direction perpendicular to the loading/unloading direction of a workpiece, and an axial direction perpendicular to the inclined surface of the frame, which is provided on the inclined surface of the frame. a support shaft that moves forward and backward and rotates about an axis at an angle of forward = am; a work holder supported on the support shaft at an inclination angle parallel to the inclined surface portion of the frame; At a workpiece processing position rotated at a predetermined angle with respect to the loading/unloading direction, a knock bottle and a reference sheet provided on the inclined surface side of the frame, and a clamper that presses the workpiece held by the work holder into contact with the reference sheet. The hole drill is provided with a machining head and is movable in a horizontal axial direction intersecting the workpiece loading/unloading direction and moving forward and backward with respect to the workpiece at the machining position.

<Operation> According to the present invention, the workpiece is loaded in the horizontal axis direction into a workpiece holder inclined at a required angle, the workpiece is rotated at a required angle with respect to the loading/unloading direction of the workpiece, the workpiece is positioned and clamped at a processing position, and the workpiece is processed. Move the head back and forth to drill holes on one side of the workpiece surface, then move the workholder to 180°.
“The machine rotates, positions and clamps the workpiece again, moves the machining head back and forth again, and drills holes on the other side of the workpiece surface.

Embodiments Hereinafter, embodiments of the present invention will be described based on FIGS. 1 to 4. In FIG. 1, 1 is a bed, and 2 is the bed 1.
It is a base fixed on top. This base 2 has an inclined surface 3 having a predetermined angle in a direction perpendicular to the direction A of carrying in and carrying out the workpiece W shown in FIG. Reference numeral 4 denotes a gate-shaped frame fixed to the inclined surface 3 of the base 2, and the frame 4 is provided with an inclined surface portion 5 facing parallel to the inclined surface 3 of the base 2. On the surface of the inclined surface portion 5 facing the inclined surface 3 of the base 2, there are provided a reference sheet 6 for a work W carried and held in a work holder 21, which will be described later, and a pair of knock bottles 7 for positioning the work. As shown in FIG. 2, a knock pin 24 is provided for positioning the work holder when the work boulder 2J is rotated in the workpiece loading/unloading direction A.

Further, a clamper 8 is provided on the inclined surface 3 of the base 2 and moves forward and backward in an axial direction perpendicular to the inclined surface 3 to press the workpiece W into contact with the base plate. This advance/retreat actuator for the clamper 8 has a structure in which a fork cylinder is provided within the base 2, and the clamper 8 is provided at the end of the piston rod 9.

IO is a multi-axis spindle supported by the processing head, and is rotatably supported around a horizontal axis perpendicular to the workpiece loading/unloading direction A line, and is attached to the base 2 with respect to the workpiece W at the processing position. It is arranged to move forward and backward from the side. 12 is a processing tool attached to the spindle 11.

Reference numeral 13 indicates an actuating device for the work holder 21, which will be described later.

The actuating device 13 is provided on the inclined 1/1 surface portion 5 of the frame 4. That is, as shown in FIG. 2, a holder I4 is fixedly installed on the inclined surface part 5, and the holder I4 moves forward and backward in an axial direction perpendicular to the inclined surface part 5, and about the perpendicular axis. A support shaft 15 that rotates is held. The R groove for advancing and retracting in the axial direction of the support shaft 15 is as follows:
An axial cylinder 16 is provided in the shaft of the support shaft 15, and a piston 17 fitted in this cylinder 16 is attached to the lot 1.
The support shaft 15 is fixed to the holding body 14 by a fixed piston 17, and the support shaft 15 is moved forward and backward by supplying and discharging pressure fluid to the front and rear chambers of the cylinder 16, which are partitioned by a fixed piston 17.

The rotation operation mechanism of the support shaft 15 includes a pinion 19 provided on the outer periphery of the support shaft 15, and a rack piston 2 attached to the pinion 19.
Engage 0. As shown in FIG. 4, this rack piston 20 is slidably fitted into a turning cylinder 40. This rack piston 20 is provided with a groove 35 in the axial direction, and the support shaft 1 is positioned at a position where an intermediate stopper 39 entering the groove 35 engages one end 36 of the groove 35.
In rotation 5, the work holder 21, which will be described later, is rotated in the work loading/unloading direction A, and when the intermediate stopper 39 is retracted from the groove 35 and the rack piston 20 is moved to the rightward end in FIG. Machining position B-B at the required angle with respect to the loading/unloading direction A line (see Figure 3)
When the work holder 2 is turned to the left end and then moved from the right end to the left end, the work holder 2 is rotated 180 degrees at the machining position.
It has a rotating structure. The mechanism for moving the intermediate stopper 39 forward and backward is provided with a cylinder 37 in the axial direction perpendicular to the central part of the rotation cylinder 40 in the axial direction.
It has a structure in which the intermediate stopper 39 is integrally provided with a piston 38 that is slidably fitted in the piston 7.

As shown in FIG. 2, the work holder 21 is supported on the support shaft 15 with the base 2 at an inclination angle parallel to the inclined surface 3. This work holder 21 has two right angles of the work W.
Support roller 2 that guides and supports the surface in the workpiece loading/unloading direction A
2 and a guide rail 23, and is further provided with a positioning recess 25 that engages with a knock pin 24 fixed to the inclined surface portion 5 of the frame 4 when the work holder 21 is in the rotational position in the workpiece loading/unloading direction A. There is. Furthermore, a stopper 26 that abuts the front end of the workpiece W and a return prevention lever 31 that engages with the rear end of the workpiece W are provided at the front end of the workpiece holder 21 in the workpiece loading/unloading direction A. The stopper 26 is rotatably supported by the work holder 21 by a support shaft 27 between a stop position where it abuts the front end of the work W and a retracted position where the work W is allowed to pass through.
The spring 28 always makes contact with the stopper pin 50 which is set at the stop position.

In order to rotate the stopper 26, which is always located at this stop position, to the retracted position, the rear end fil(2(i a A stopper release cylinder 29, which holds the gripping member 30 engaged and gripped at the end of the piston, is fixedly installed on the frame 4. On the other hand, a lever 3I for preventing return is attached to the support shaft 32 on the work holder 21.
When the workpiece W is carried in, the workpiece W is allowed to pass therethrough, and after the workpiece W has passed, a plunger 33 biased by a spring is used to move the workpiece 2 after the workpiece W.
“It has a structure that presses it to the position where it engages with Xf.3
Reference numeral 4 denotes a stopper that restricts the pressing and turning position of the lever 31.

Further, the work holder 21 is provided with guide bushes 34a and 34b at a required pitch for guiding the processing tool 12 of the processing head 10 at the processing position of the work W.

A knock pin 7 for positioning a workpiece provided on the inclined surface portion 5 of the frame 4 is capable of eccentric rotation.

As shown in FIG. 4, the eccentric operation mechanism for the knock pin 7 is such that the knock pin 7 is positioned eccentrically from the center of rotation of the pinion shaft 41 rotatably supported by the inclined surface portion 5 of the frame 4.
is formed, and a rack par 42 is engaged with the pinion shaft 41. The pair of rack pars 42 are connected by a link 43, and an operating shaft 111 connected to a cylinder for offset of the knock pin of the circuit is connected to the link 43.

Next, the operation of the present invention with the above configuration will be explained. When the workpiece W is being carried in, the workpiece holder 2I is pivotally positioned in the workpiece carrying-in/unloading direction A, as shown in FIGS. 2 and 3. That is, the rack piston 20 of the actuating device I3 moves forward with the intermediate stopper 39 as shown in FIG.
The positioning recess 25 provided in the work holder 22 is engaged with the knock pin 24 due to the backward movement of the support shaft 15. The stopper 26 is engaged and held by the gripping member 30, but since the piston rod of the stopper release cylinder 29 has been moved to the forward end, it is at the stop position where it comes into contact with the front end of the workpiece W. In this state, the work W is carried into the work holder 21 from the left side in FIG. 3 at the same inclination as the work holder 21.

At this time, the lever 32 is pushed by the workpiece W and swings clockwise in FIG. 3 against the pressing force of the plunger 33, allowing the workpiece W to pass. Then, the front end of the work W is brought into contact with the stopper 26, and the work W is held against the work holder 2.
1, the pressure on the lever 31 by the workpiece W is released, and the lever 31 is swung counterclockwise by the plunger 33 until it hits the stopper 34.
It engages with the rear end of the work W to prevent the work W from returning.

After the work W is carried into the work holder 21,
The support shaft 15 is moved forward and the positioning recess 25 of the work holder 21 is moved from the knock bin 24 to the work holder 2.
1 is in a state where it can turn. After that, intermediate stopper 3
9 is moved backward, and the rack piston 20 is moved to the rightward end in FIG. The amount of movement of the rack piston 20 to the rightward end causes the support shaft 15 to move toward the work holder 2 in FIG.
1 clockwise to position the workpiece W at a processing position B-B at a required angle with respect to the workpiece loading/unloading direction A line. Due to this rotation of the work holder 21, the rear end 26a of the stopper 26 is removed from the gripping member 30, but the spring 28
The stop position is held by the tensile force of . After the work holder 21 is located at the machining position B-B, the support shaft 15
is moved backward, and the knock pin 7 is inserted into the positioning hole provided in the workpiece W to position the workpiece W.

After that, move the clamper S forward and move the work holder 2.
The work W in 1 is pressed against the reference sheet 6 and clamped. After clamping the work W, the machining head IO is moved horizontally forward from the base 2 side, the machining tool 12 is guided by the guide bush 34a, and the hole 11+ on one side inclined in two directions is drilled on the machining surface of the work W. It performs processing. That is, the work W held in the work holder 21 is tilted parallel to the inclined surface 3 of the base 2 when carried in, and is further moved to the processing position B.
At -B, the processing tool 1 moves forward in the horizontal axis direction because it is rotated at a required angle with respect to the workpiece loading/unloading direction A line.
2, the two-way inclination angle θ1. shown in FIGS. 5 and 6 is determined.
A hole along the axis O of θ2 is machined.

When the above drilling is completed, the clamper 8 is moved backward to unclamp the workpiece W, and the support shaft 15 is moved forward to extract the dowel pin 7 from the positioning hole of the workpiece W. Then, the rack piston 20, which is at the rightward end in FIG. 4, is moved to the leftward end. As a result, processing position B
-B, the work holder 21 is rotated 180° counterclockwise in FIG. During this turn, knock bottle 7
is rotated eccentrically. However, if the positioning hole of the work W into which the knock pin 7 is fitted is equidistant from the pivot center of the work W (the rotation center of the support shaft 15), the knock pin 7 may be fixed. 180 of this work holder 21
° After the turning movement, move the support shaft 15 backward as described above,
Insert the knock pin 7 into the positioning hole of the workpiece W, clamp the workpiece W with the clamper 8, move the machining head IO forward, guide the machining tool 12 with the guide bush 34b, and make it point symmetrical with the previously machined hole. The two-way inclination angle θ1. θ2
The drilling of the hole H2 on the other side of the axis O is performed.

Here, the machining head lO, which moves forward and backward in the horizontal axis direction, strikes the machining surface of the workpiece W at a two-direction inclination angle θ1. To explain the reason why hole 1+ of axis O of θ2, old is machined, 1b
Holes H1, H! depending on the inclination angle of the work W held by the work holder 21 on the ingredient side! The inclination angle θ2 of the axis O of inclination angle θ1
is obtained. Also, the work holder 2 is placed at the machining position B-B.
1 by rotating the same processing head l by 180°.
At 0, the hole 112 can be machined symmetrically within the machined surface of the workpiece W.

After drilling is completed, the clamper 8 is unclamped, the support shaft 15 is moved forward to remove the screw pin 7 from the positioning hole of the workpiece W, and the intermediate stopper 39 is advanced to remove the groove 35 of the rack piston 20. The rack piston 20, which is at the leftward end in FIG.

As a result, the work holder 21 is moved to the third position from the machining position B-B.
In the figure, it turns clockwise and returns to the position in the workpiece loading/unloading direction. At this time, the rear end 26a of the stopper 26 is engaged with and gripped by the gripping member 30. Then, the support shaft 15 is moved backward to engage the positioning recess 25 of the work holder 21 with the knock pin 24, and the stopper actuating cylinder 2
By moving the piston rod 9 diagonally upward in FIG. 2, the stopper 26 is turned counterclockwise against the tensile force of the spring 2, and is retracted to allow the workpiece W to pass through. The work W is the work holder 21
After six strokes, the piston rod of the stopper actuating cylinder 29 moves downward, and the stopper 26 is returned to the stop position where it contacts the stopper pin 50 by the tension of the spring 28, in preparation for the next machining cycle.

Note that although the above explanation is based on drilling by machining, it can also be applied to tapping, boring, etc.

<Effects of the Invention> As described above, according to the present invention, the workpiece is positioned at two inclination angles on the jig side, and the workpiece is
Since it is configured to rotate by 0°, one machining head that moves in the horizontal axis direction perpendicular to the loading/unloading direction of the workpiece makes two sets of holes with bidirectionally inclined axes point symmetrical within the same machining surface of the workpiece. It has the advantage that the processing unit can be placed perpendicular to the transfer line, which saves a lot of floor space. are doing.

[Brief explanation of drawings]

Fig. 1 is a side view of the device of the present invention, Fig. 2 is a sectional view of the main part of the present invention, Fig. 3 is a view from the direction of Fig. 2 ■, and Fig. 4 is Fig. 2 IV-
5 is a plan view of a workpiece processed by the apparatus of the present invention, and FIG. 6 is a view taken in the direction of the arrow (■) in FIG. 5. 1...Bed, 2...Base, 3...Slope, 4...
... Frame, 5... Inclined surface part, 6... Reference sheet, 7... Dowel pin, 8... Clamper, IO...
Processing head, 13... Actuation device, 15... Support shaft,
17...Piston, 20...Rack piston, 21
...Work holder, 24...Knock bottle, 26...
・Stotsu Patent Applicant: Outside Toyota Machine Machinery Co., Ltd. 1 representative: Hirai Hirai
Part 4 Figure 5 l W Figure 6 9!

Claims (1)

[Scope of Claims] A processing machine that drills holes point-symmetrically within the same machining surface, the axes of which are inclined in two directions with respect to the machining surface of a workpiece, wherein the holes are tilted in a direction perpendicular to the direction in which the workpiece is carried in and out. a frame having a surface portion; a support shaft that is installed on an inclined surface portion of the frame and moves forward and backward in an axial direction perpendicular to the inclined surface portion of the frame and rotates about the perpendicular axis; A work holder supported at an inclination angle parallel to the inclined surface portion of the frame, and a dowel pin provided on the inclined surface portion side of the frame and a a reference sheet; a clamper that presses the workpiece held by the work holder into contact with the reference sheet; and a clamper that moves forward and backward relative to the workpiece at the processing position in a horizontal axial direction perpendicular to the workpiece loading/unloading direction line. A processing device characterized in that it is equipped with a drilling head.