JPH046485B2 - - Google Patents

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention is particularly applicable to a workpiece with two axes relative to the machined surface.
This invention relates to a processing device that drills holes that are inclined in the same direction in a point-symmetrical manner within the same processing surface.

<Prior art> In drilling a workpiece, the methods shown in Figs. 5 and 6
As shown in the figure, a required inclination angle θ ₁ is established between the axis O of a hole of a required pitch l to be drilled in the machined surface of the workpiece W with respect to the Y axis of the X-Y coordinate with the machined surface as a horizontal plane.
There are cases where two sets of holes H _{1 and} H ₂ are machined that are symmetrical with respect to the center line XX of the workpiece W and are inclined in two directions: and a required angle of inclination θ ₂ with respect to the Z axis. .

<Problems to be Solved by the Invention> When performing the above-mentioned drilling process, conventionally two machines are used, each with its spindle head inclined in two directions so that the spindle axis corresponds to the axis O of the holes H ₁ and H ₂ . processing machines are used. Therefore, there is a problem that not only is the equipment cost of the processing machine expensive, but also that a large amount of floor space is required for installing the machine.

<Means for solving the problems> The present invention solves the above-mentioned conventional problems.
The gist of its configuration is that the axis line is 2 to the machined surface of the workpiece.
A processing machine that drills holes symmetrically in the same machining plane that are inclined in directions, the base having an inclined surface in a direction perpendicular to the loading/unloading direction of the workpiece, and the inclined surface of the base. a gate-shaped frame having parallel opposing inclined surfaces and fixed on the inclined surface of the base; the inclined surface of the frame moves forward and backward in an axial direction perpendicular to the inclined surface; a support shaft that rotates about an axis; a stopper that is supported by the support shaft at an angle of inclination parallel to the inclined surface of the frame; a stopper that can come into contact with the front end of the carried workpiece; A work holder equipped with a lever for preventing return and a guide bush for guiding a processing tool, a rotating position of the work holder at a required angle with respect to a direction in which the work is carried in and out, and a rotating position of 180° from this required angle rotating position. a rotation drive means for rotating the support shaft to a workpiece processing position;
A dowel pin and a reference sheet for positioning the workpiece provided on the sloped surface of the frame at the workpiece processing position; a clamper installed on the sloped surface of the base for pressing the workpiece held by the workpiece holder against the reference sheet; and a workpiece. and a drilling head disposed so as to be movable forward and backward in a horizontal axial direction perpendicular to the axis of the carrying-in and carrying-out direction and on one side with respect to the workpiece at the processing position.

<Function> In 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 the processing position, and the workpiece is moved to the processing head. Move forward and backward to drill holes on one side of the workpiece surface, then rotate the workpiece holder 180 degrees, position and clamp the workpiece again, and move the machining head back and forth again to drill holes on the other side of the workpiece surface. It is used for processing.

<Examples> Examples of the present invention will be described below with reference to FIGS. 1 to 4. In Figure 1, 1 is bed, 2
is a base fixed on the bed 1. This base 2 is arranged in the direction A of carrying in and out of the workpiece W as shown in Fig. 3.
It has an inclined surface 3 having a required angle in a direction orthogonal to the direction. 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. The inclined surface 3 of the base 2 of this inclined surface portion 5
A reference sheet 6 for a work W carried in and held in a work holder 21, which will be described later, and a pair of workpiece positioning knob pins 7 are mounted on the surface facing the work holder 21, as shown in FIG. A dowel pin 24 is provided for positioning the work holder when it is pivoted in 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 reference sheet 6. This clamper 8 advancement/retraction actuation device is
It has a structure in which a cylinder (not shown) is provided in the base 2, and the clamper 8 is provided at the end of the piston rod 9.

Reference numeral 11 denotes a multi-axis spindle supported by the processing head 10, which is rotatably supported around a horizontal axis in a direction perpendicular to the workpiece loading/unloading direction A line. It is arranged to move forward and backward from the second side. 12 is a processing tool installed on 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 surface portion 5 of the frame 4. That is, as shown in FIG. 2, a holder 14 is fixed to the inclined surface portion 5, and the holder 14 moves forward and backward in an axial direction perpendicular to the inclined surface portion 5, and rotates about the perpendicular axis. A working support shaft 15 is held. The mechanism for advancing and retracting the support shaft 15 in the axial direction is
It has a structure in which an axial cylinder 16 is provided in the shaft of the cylinder 16, and a piston 17 fitted in the cylinder 16 is fixed to the holder 14 by a rod 18, and the front and rear chambers of the cylinder 16 are partitioned by the fixed piston 17. By supplying and discharging pressure fluid to and from the support shaft 15
is moved forward and backward.

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 20 meshed with the pinion 19. This rack piston 20 is connected to a rotation cylinder 40 as shown in FIG.
is slidably fitted inside. This rack piston 20 is provided with an axial groove 35, 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 workpiece 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. When the work holder 21 is turned to the machining position B-B (see Fig. 3) at a required angle with respect to the carrying-in/unloading direction A line, and is further moved from the right-hand end to the left-hand end, the work holder 21 is turned 180 degrees at the machining position. It has a structure that allows The mechanism for advancing and retracting the intermediate stopper 39 is provided with an axial cylinder 37 orthogonal to the axial center of the turning cylinder 40, and the intermediate stopper 39 is attached to a piston 38 that is slidably fitted in the cylinder 37. This is an integrated structure.

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 is equipped with a support roller 22 and a guide rail 23 that guide and support the two orthogonal surfaces of the work W in the work loading/unloading direction A. , a knock pin 24 fixed to the inclined surface portion 5 of the frame 4
A positioning recess 25 is provided which engages with.
In addition, the workpiece loading/unloading direction A of the work holder 21
A stopper 2 that comes into contact with the front end of the workpiece W is attached to the front end of the workpiece W.
6, and a return prevention lever 31 that engages with the rear end of the workpiece W. The stopper 26
is rotatably supported by the work holder 21 by a support shaft 27 at a stop position where it abuts the front end of the work W and at a retracted position where it allows the work W to pass through.
It is in contact with a stopper pin 50 which is always kept at the stop position by a spring 28. In order to rotate the stopper 26, which is always located at this stop position, to the retracted position, the rear end portion 26a of the stopper 26 is engaged and gripped only when the work holder 21 is at the pivot position in the workpiece loading/unloading direction A. A stopper release cylinder 29 having a gripping member 30 at the end of the piston rod is fixed to the frame 4. On the other hand, the return prevention lever 31 is pivotably supported on the work holder 21 by a support shaft 32,
When carrying in the workpiece W, the workpiece W is allowed to pass,
After the workpiece W has passed, a plunger 33 biased by a spring pushes the workpiece W to a position where it engages with the rear end thereof. Reference numeral 34 is 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 operating mechanism of the knock pin 7
A knock pin 7 is formed at a position eccentric from the rotation center of a pinion shaft 41 which is rotatably supported by the pinion shaft 41.
A rack bar 42 is engaged with the pinion shaft 41. The pair of rack bars 42 are connected by a link 43, and the link 43 is connected to an operating shaft 44 connected to a cylinder for offset pin offset (not shown).

Next, the operation of the present invention with the above configuration will be explained. When carrying in the workpiece W, the workpiece holder 21 is pivotally positioned in the workpiece carrying-in/out direction A, as shown in FIGS. 2 and 3. That is, as shown in FIG. 4, the rack piston 20 of the actuating device 13 is at the pivoting position of the support shaft 15 with the intermediate stopper 39 advanced and one end 36 of the groove 35 in contact with the intermediate stopper 39; Due to the backward movement of the work holder 21, the positioning recess 25 provided in the work holder 21 is engaged with the dowel pin 24. The stopper 26 is engaged with and gripped 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, when the front end of the work W comes into contact with the stopper 26 and the work W is completely carried into the work holder 21, the pressing of the lever 31 by the work W is released, and the lever 31 comes into contact with the stopper 34 by the plunger 33. It is swung counterclockwise until it engages with the rear end of the workpiece W to prevent the workpiece 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 removed from the knock pin 24, so that the work holder 21 can be turned. Thereafter, the intermediate stopper 39 is moved backward, and the rack piston 20 is moved to the rightward end in FIG. By the amount of movement of the rack piston 20 to the rightward end, the support shaft 15 is moved to 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. As the work holder 21 pivots, the rear end 26a of the stopper 26 is removed from the gripping member 30, but the tension of the spring 28 maintains the stop position. After the work holder 21 is positioned at the processing position B-B, the support shaft 15 is moved backward, the dowel pin 7 is inserted into the positioning hole provided in the work W, and the work W is positioned. Thereafter, the clamper 8 is moved forward to press and clamp the work W in the work holder 21 against the reference sheet 6. After clamping the workpiece W, the machining head 10 is moved horizontally forward from the base 2 side, and the pre-machining head 12 is guided by the guide bush 34a to drill a hole _H1 on one side of the workpiece W that is inclined in two directions. Do it. 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 furthermore, at the processing position B-B, the work W held in the work holder 21 is rotated at a predetermined angle with respect to the line A in the workpiece carry-in and carry-out direction. Therefore, the hole along the axis O with the two-way inclination angles θ ₁ and θ ₂ shown in FIGS. 5 and 6 is machined by the processing tool 12 moving forward in the horizontal axis direction.

When the above drilling process 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, the work holder 21 is rotated counterclockwise in FIG. 3 at the machining position B-B.
Rotates 180°. During this turning, the knock pin 7 is eccentrically rotated. However, if the positioning hole of the workpiece W into which the knock pin 7 is fitted is equidistant from the pivot center of the workpiece W (the rotation center of the support shaft 15), the knock pin 7 may be fixed. After the work holder 21 has rotated 180 degrees, the support shaft 15 is moved backward as described above, the dowel pin 7 is inserted into the positioning hole of the work W, and the clamper 8 is used to rotate the work W.
clamp and move the processing head 10 forward,
The machining tool 12 is guided by the guide bush 34b to drill a hole H2 on the other side of the axis O _with two-directional inclination angles θ ₁ and θ ₂ that are point symmetrical to the previously machined hole.

Here, to explain why the holes H ₁ and H 2 on the axis O with two-directional inclination angles θ ₁ and θ ₂ are machined on the machining surface of the workpiece W by the machining head 10 that moves forward and _backward in the horizontal axis direction, the jig Holes H ₁ and H ₂ are formed depending on the inclination angle of the work W held by the work holder 21 on the side.
The inclination angle θ ₂ of the axis O is obtained, and the work holder 2
1 at the above-mentioned inclination angle with respect to the workpiece loading/unloading direction A line, and the turning angle at the required angle to the machining position B-B provides the tilt angle θ ₁ of the axis O of the hole H ₁ . In addition, by rotating the work holder 21 by 180 degrees at the machining position B-B, a point-symmetric hole H ₂ can be created in the machining surface of the workpiece W using the same machining head 10.
This results in the processing of

After completion of the drilling process, the clamper 8 is unclamped, the support shaft 15 is moved forward to remove the dowel pin 7 from the positioning hole of the workpiece W, and the intermediate stopper 39 is advanced to fit into 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 dowel pin 24, and the piston rod of the stopper operating cylinder 29 is moved upward diagonally in FIG. is rotated counterclockwise against the tensile force of the spring 28, and is retracted to allow the workpiece W to pass through. After the work W is carried out from the work holder 21, the piston rod of the stopper operating cylinder 29 moves downward, and the stopper 2
6 is the stopper pin 5 by the tensile force of the spring 28.
It is returned to the stop position where it touches zero, and is ready for the next machining cycle.

Although the above explanation is based on drilling, it can also be applied to tapping, boring, etc.

<Effects of the Invention> As described above, according to the present invention, there is a frame provided with an inclined surface portion in a direction perpendicular to the direction of carrying in and out of the workpiece, and the inclined surface portion of the frame moves forward and backward in the axial direction perpendicular to the inclined surface portion. a support shaft that is actuated and driven to rotate in two positions: a rotation position of a required angle around the perpendicular axis and a rotation position of 180° from the required angle rotation position; The workpiece is positioned at an inclination angle in two directions on the jig side using a work holder supported at an inclination angle parallel to the surface, and the workpiece is placed at the machining position.
Since it is configured to rotate 180 degrees, two sets of holes with bidirectionally inclined axes can be machined within the same machining plane of the workpiece by one machining head that moves in the horizontal axis direction perpendicular to the loading/unloading direction of the workpiece. Processing can be performed point-symmetrically, reducing machine equipment costs and floor space. In particular, the processing unit can be placed perpendicular to the transfer line, resulting in significant floor space savings. have.

[Brief explanation of drawings]

Fig. 1 is a side view of the device of the present invention, Fig. 2 is a sectional view of essential parts of the invention, Fig. 3 is a view taken in the direction of the arrows in Fig. 2, Fig. 4 is a line view taken from Fig. 2, and Fig. 5 is A plan view of a workpiece processed by the apparatus of the present invention, FIG. 6 is a view taken along the arrow in FIG. 1...Bed, 2...Base, 3...Slope, 4
... Frame, 5 ... Inclined surface section, 6 ... Reference sheet, 7 ... Knock pin, 8 ... Clamper, 10 ...
...Processing head, 13... Actuation device, 15... Support shaft, 17... Piston, 20... Rack piston, 21... Work holder, 24... Knock pin, 26... Stopper.

Claims (1)

[Scope of Claims] 1. A processing machine that drills 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, the holes being drilled in a direction perpendicular to the direction of carrying in and carrying out the workpiece. A base having an inclined surface, a gate-shaped frame having an inclined surface portion facing parallel to the inclined surface of the base and fixed on the inclined surface of the base, and the inclined surface portion of the frame. A support shaft that moves forward and backward in an axial direction perpendicular to the inclined surface portion and rotates about the perpendicular axis, and a workpiece that is carried in and supported by the support shaft at an inclination angle parallel to the inclined surface portion of the frame. a work holder equipped with a stopper that can come into contact with the front end of the workpiece, a lever for preventing return that can be engaged and detached from the rear end of the workpiece, and a guide bush that guides a processing tool; a rotation position, a rotation driving means for the support shaft for rotating the support shaft to a workpiece machining position at a rotation angle of 180 degrees from the required angle rotation position, and a dowel pin for positioning the workpiece provided on the inclined surface of the frame at the workpiece machining position. and a reference sheet, a clamper that is installed on the inclined surface of the base and presses the workpiece held by the work holder against the reference sheet, and a clamper that is installed on the inclined surface of the base and presses the workpiece held in the workpiece holder against the reference sheet; A processing device characterized by comprising a drilling head that is arranged to be movable forward and backward on one side with respect to a workpiece in a position.