JPH06155201A - Different sorts of working device - Google Patents

Abstract

PURPOSE:To simply change the working face or the working position of a work through rotation of a rotary table and improve efficiency of different sorts of working operation by providing positioning members by which a work can be positioned in the directions of meeting at right angles along the table face of the rotary table. CONSTITUTION:Quite same two cylinder heads 6, 6 are respectively placed on the horizontal table face 7a of a rotary table 7, so that one is in its horizontal state in a first position I and the other is in its vertical state in a second position II. These cylinder heads 6, 6 are positioned and fixed in decided positions of the table face 7a by means of supporting parts 16, 18, positioning members 19, 37, 39, 42, and clamp members 27, 50, 54, 29, 57, which are arranged on the rotary table 7. This positioning and fixing construction is constituted so that exposed faces of the cylinder heads 6 are realized as many as possible without any obstruction to those faces. Hereby, the number of faces which can be simultaneously worked is increased, and the times of positioning and fixing can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a heterogeneous processing apparatus for mounting a work such as a cylinder head on a rotary table and performing different kinds of processing such as milling, boring and drilling using a machining center.

[0002]

2. Description of the Related Art Cylinder heads are used for milling after casting.
Bored and drilled. FIG. 11 shows the processing steps of the conventional cylinder head 6.
The five faces 1 to 5 are milled with the milling tool 9 in the order of 1 (A) to (E), and then the face 2 is drilled with the boring tool 11 as shown in FIG.
As shown in (B) and (D), the surface 2 and the surface 4 are sequentially drilled by the drill tool 10.

[0003]

The conventional method for machining the cylinder head 6 requires a total of eight steps for milling, boring and drilling, and the cylinder head 6 must be positioned and chucked each time this step is changed. Therefore, the work was very complicated and inefficient.

An object of the present invention is to provide a dissimilar machining apparatus capable of efficiently performing dissimilar machining by minimizing the number of times of positioning and chucking a work such as a cylinder head.

[0005]

A feature of the present invention is that a worktable is placed on a table surface and is rotatable, and
A positioning member that positions the work in two orthogonal directions along the table surface of the rotary table, and a positioning member that can be moved toward and away from the positioning member, and cooperates with the positioning member to move the work. A horizontal clamping member for clamping, a vertical clamping member for clamping a work between the table surface of the rotary table, and a side of the rotary table, which is arranged so as to be able to approach and separate from the work, This is a machining center that processes workpieces that are positioned and fixed on the table surface.

[0006]

The work placed on the table surface of the rotary table is surely positioned and fixed by the positioning member, the horizontal clamping member and the vertical clamping member, and in this state, it is processed by the machining center. Since the machining surface or machining position of the work is changed by rotating the rotary table, the number of times of positioning and chucking the work can be reduced. The type of processing can be switched by the machining center.

[0007]

An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the dissimilar machining apparatus according to the present invention has a rotary table 7 and a machining center 8. The rotary table 7 and the machining center 8 are driven by NC control. The machining center 8 has four tools: a milling tool 9, a drill tool 10, a first boring tool 11a and a second boring tool 11b (see FIG. 10 (B)).
The tool is selected by rotating 2 times.

On the horizontal table surface 7a of the rotary table 7, two identical cylinder heads 6 and 6 are placed in a horizontal position at a first position I and a vertical position at a second position II, respectively. . These cylinder heads 6 and 6 are
The table surface 7 is provided by a support portion, a positioning member and a clamp member (not shown in FIG. 1) arranged on the rotary table 7.
It is adapted to be positioned and fixed at a predetermined position of a.
This positioning and fixing structure is such that the surface of the cylinder head 6 is exposed as much as possible without any obstacles. As a result, the number of surfaces that can be processed at one time increases, and the number of positioning and fixing operations can be reduced.

FIG. 2 shows an outline of the positioning member and the clamp member. The cylinder head 6 in the first position I is shown in FIG.
As shown in FIG. 5, the lower surface is supported at three points by three supporting portions 16 to 18 fixed to the table surface 7a. On the table surface 7a, as shown in FIG. 3B, a pair of positioning members 19 for positioning in the X direction along the table surface 7a,
19 and a positioning member 20 for positioning in the Y direction orthogonal to the X direction are fixed. On the other hand, the cylinder head 6
As shown in FIGS. 4 and 5, recesses 21 and 22 with which the positioning members 19 and 20 are engaged are formed in each of them.

As shown in FIG. 2, a support 25 is erected on the table surface 7a substantially in the center thereof. The support base 25 is rotated by the operating cylinder 26 and the operating cylinder 26,
A pair of horizontal clamp members 27 (see FIG. 4) are arranged to approach and separate from the positioning member 19 in the X direction. The support base 25 is further provided with an operating cylinder 28 and a vertical clamp member 29 vertically moved by the operating cylinder 28. The vertical clamp member 29 has four clamp pins 29a and two erroneous clamp prevention pins 29b. Further, on the table surface 7a, as shown in FIG. 3 (B) and FIG.
A horizontal clamp member 31 that is swung by and is moved toward and away from the positioning member 20 in the Y direction is provided.

Incidentally, adjacent to the supporting portions 17 and 18,
As shown in FIGS. 3A and 3B, a rail 32 on which the cylinder head 6 can be placed and slid is provided.

The cylinder head 6 in the second position II is shown in FIG.
The lower surface is supported by the supporting portion 36 fixed to the table surface 7a as described above. A positioning member 37 for positioning in the Y direction is integrally projected on the support portion 36. An L-shaped support base 38 is erected on the side table surface 7a of the cylinder head 6, and a positioning member 39 for positioning in the Y direction is rotated on the horizontal portion of the upper end of the support base 38 as shown in FIG. It is movably arranged. The positioning member 39 is constantly urged to rotate clockwise in FIG. 2 by a rod 41 urged downward by a spring 40. Further, as shown in FIGS. 2 and 7, the vertical portion of the support base 38 is
U-shaped positioning members 42, 42 for positioning in the Y direction
Are projected horizontally in two steps.

On the other hand, a positioning member 43 for positioning in the X direction is integrally formed on the side surface of the support base 25.

Three working cylinders 45 to 47 are mounted on the side of the support base 38 opposite to the positioning member 42. Rod 48 of upper and lower working cylinders 45, 47
7 extends to the central gap 49 of the positioning member 42 as shown in FIGS. 7 and 8, and at the tip thereof, a horizontal clamp member 50 that can approach and separate from the positioning member 43 on the side surface of the support base 25 in the X direction. It is installed. As shown in FIG. 9, the rod 51 of the intermediate working cylinder 46 is used for the support base 3
It is rotatably attached to a bracket 52 fixed to the No. 8 by a pin 53, and is pin-connected to a horizontal clamp member 54 that can approach and separate from the positioning member 42 in the Y direction.

At the upper part of the support base 38, an operating cylinder 56
A vertical clamp member 57 that is vertically moved by the operating cylinder 56 is provided. The vertical clamp member 57 has two erroneous clamp prevention pins 57b as shown in FIG. A horizontal member 58 is integrally coupled adjacent to the upper side of the vertical clamp member 57, and guide rods 59 extending upward from both ends of the horizontal member 58 are provided with support rods 3.
8 is slidably penetrated.

Next, the operation of the above-mentioned dissimilar processing apparatus will be described.

First, the cylinder head 6 is placed at the first position I on the table surface 7a of the rotary table 7 for the later-described processing, and then the cylinder head 6 is moved to the second position on the table surface 7a.
The cylinder head 6 is moved to the position II, and a new cylinder head 6 is placed in the vacant first position I. Then, the two cylinder heads 6 and 6 at the first position I and the second position II are processed as described later. The cylinder head 6 in the second position II is removed from the second position II because the machining is completed by this, and the first position I
The cylinder head 6 is moved to the empty second position II, and a new cylinder head 6 is placed at the first position I. The above operation is repeated to process the cylinder head 6 one after another.

The method of attaching the cylinder heads 6 and 6 to the first position I and the second position II will be described in detail below.
At position I, the cylinder head 6 is placed on the rail 32 and slid in the direction of arrow A as shown in FIGS.
When the front end of the cylinder head 6 reaches the position B, the
As shown in (A), tilt the cylinder head 6 in the direction of arrow C,
It is placed horizontally on the three supports 16-18. At this time, the positioning members 19, 19 on the table surface 7a are engaged with the recesses 21 of the cylinder head 6 as shown in FIG. 5, and the other positioning member 20 is engaged with the recesses 22 as shown in FIG. The upper end of 31 is engaged with the recess 33 of the cylinder head 6.

At the second position II, the cylinder head 6 is loaded onto the table surface 7a from the direction of the arrow in FIGS. At this time, the horizontal clamp member 50 and the horizontal clamp member 54 are retracted so as not to interfere with the loading of the cylinder head 6. Further, the vertical clamp member 57 is also raised as shown by the solid line in FIG. 6 so as not to get in the way. When the cylinder head 6 is carried in as described above, the positioning member 37 is fitted in the recess 65 formed in the lower portion of the cylinder head 6, and the upper portion of the cylinder head 6 projects as shown by the solid line in FIG. Abut 39.

After mounting the cylinder heads 6 and 6 on the table surface 7a as described above, the operating cylinders 26, 28 and 3 are mounted.
0, 45, 46, 47, 56 are actuated to operate the horizontal clamp members 27, 31, 50, 54 and the vertical clamp member 2
Clamp 9 and 57. As a result, at the first position I, the cylinder head 6 is clamped in the X direction by the horizontal clamp member 27 and the positioning member 19 as shown in FIG. 5, and by the horizontal clamp member 31 and the positioning member 20 in the Y direction as shown in FIG. Is clamped at. The cylinder head 6 further includes a support portion 16 to 18 and a vertical clamp member 29.
And also clamp in the vertical direction (Z direction). In this way, the cylinder head 6 is clamped in three orthogonal directions of X, Y and Z.

In the second position II, the cylinder head 6
Shows the horizontal clamp member 50 and the positioning member 4 as shown in FIG.
3 is clamped in the X direction, and as shown in FIGS. 8 and 9, the horizontal clamp member 54 and the tip end 4 of the positioning member 42.
It is clamped in the Y direction by 2a. Cylinder head 6
Further, the support portion 36 and the vertical clamp member 57 are also clamped in the Z direction. In this way, the cylinder head 6 is clamped in three orthogonal directions of X, Y and Z.

When the vertical clamp member 57 moves downward, the end 58a of the horizontal member 58 integral with the vertical clamp member 57 is formed.
Causes the positioning member 39 to be pushed down against the spring 40 and moved to the non-positioning position shown by the chain line in FIG.

If the mounting direction of the cylinder head 6 is correct, the incorrect clamp prevention pins 29b, 57b of the vertical clamp members 29, 57 will have holes 66, 66 in the cylinder head 6 as shown in FIGS. Just inserted in 67. However, if the mounting direction of the cylinder head 6 is incorrect, the positions of the incorrect clamp prevention pins 29b and 57b and the holes 66 and 67 are not aligned, and the incorrect clamp prevention pins 29b and 57b cannot be inserted. Therefore, the stroke amount of the working cylinders 28, 56 does not reach the normal value, and the shortage of the stroke amount is detected by a detection device (not shown), and the occurrence of erroneous clamping is notified, and the control system of the device is stopped. Issue a command.

When the cylinder heads 6 and 6 are clamped, machining by the machining center 8 is started. Figure 1
0 (A) shows the step of this processing, in the figure, Mi represents milling, Br represents boring, and Dr represents drilling. The machining center 8 approaches and separates from the rotary table 7 as shown by the arrow in FIG. Cylinder head 6,
The machining surface or machining position of 6 is changed by rotating the rotary table 7. The processing steps are Mi → Mi → Mi.
The process proceeds in the order of → Br → Dr → Dr → Dr.
Indicates the position of the machining center 8. For convenience of illustration, the rotary table 7 is shown in a fixed state, and the machining center 8 is shown to be moved around the rotary table 7.

For the milling Mi of, the milling tool 9
Is used, and the surface 4 of the cylinder head 6 in the first position I is
3, 5 and the surfaces 1, 2 of the cylinder head 6 in the second position II
Are milled in order. With respect to the surface 1, as shown in FIGS. 8 and 9, the positioning member 37 is the recess 6 of the cylinder head 6.
5 and the positioning member 39 moves to the cylinder head 6
After positioning, the vertical clamp member 57 is interlocked with the downward movement of the vertical clamp member 57 and escapes from the surface 1 as indicated by the solid line, so that no interference with the milling tool 9 occurs. On surface 2, there are no obstacles over the entire surface. This is because the horizontal clamp member 54 and the positioning member 42 are used to position and fix in the Y direction on the side portion of the cylinder head 6.

In the boring Br, the first boring tool 11a and the second boring tool 11b are used to boring large and small holes on the surface 2 of the cylinder head 6 at the second position II.

In the drilling process of Dr, the drill tool 1
0 is used, the surface 3, of the cylinder head 6 in the first position I
4 and the holes in the surface 1 of the cylinder head 6 in the second position II are drilled. The tools are switched by rotating the shaft 12.

[0028]

As described above, according to the present invention, a workpiece such as a cylinder head positioned and fixed on the table surface of a rotary table is machined by a machining center. Therefore, by rotating the rotary table, the machining surface or machining position of the workpiece can be simplified. Since the machining type can be changed easily by changing the machining center, it is possible to minimize the number of times of workpiece positioning and chucking, and improve the efficiency of the machining work.

When the positioning member is released to the non-positioning position in conjunction with the clamping operation of the vertical clamping member,
Since the positioning member does not interfere with processing, it is possible to increase the number of surfaces that can be machined by positioning and fixing once.

[Brief description of drawings]

FIG. 1 is a perspective view in which details of a dissimilar processing apparatus according to the present invention are omitted.

FIG. 2 is a side view of the device.

3A is a side view of the cylinder head at the first position on the table surface as seen from the Y direction, and FIG. 3B is a plan view of the same.

FIG. 4 X of the cylinder head at the first position on the table surface
The side view seen from the direction.

FIG. 5: Y of the cylinder head at the second position on the table surface
The side view seen from the direction.

FIG. 6 is a side view showing the positioning and clamping structure of the upper end portion of the cylinder head in the second position.

FIG. 7A is a positioning member 4 fixed to a support base.
2 is a front view of FIG. 2, and (B) is a side view of FIG.

FIG. 8: Positioning member 4 for the cylinder head in the second position
The horizontal cross-section top view in the height of 2.

FIG. 9 is a horizontal sectional plan view at the height of the horizontal clamp member 54 of the cylinder head in the second position.

FIG. 10 (A) is a schematic plan view of a rotary table, (B).
Is a schematic front view of a machining center.

11 (A) to (E) are perspective views showing a conventional process of processing a cylinder head.

[Explanation of symbols]

 6 Cylinder head (workpiece) 7 Rotary table 8 Machining center 9 Milling tool 10 Drill tool 11a 1st boring tool 11b 2nd boring tool 19,20,37,39,42,43 Positioning member 26,28,30,45,46, 47,56 Actuating cylinder 27,31,50,54 Horizontal clamp member 29,57 Vertical clamp member

Claims (2)

[Claims] 1. A rotary table capable of rotating a workpiece placed on a table surface, a positioning member for positioning the workpiece in two orthogonal directions along the table surface of the rotary table, and the positioning member. A horizontal clamp member that is disposed so as to be able to approach and separate from each other and that clamps the work in cooperation with the positioning member; a vertical clamp member that clamps the work between the table surface of the rotary table; and the rotary table And a machining center which is disposed on the side of the table so as to be able to approach and separate from the work, and which processes the work positioned and fixed to the table surface. 2. The positioning member is configured to be movable between a positioning position for positioning a work and a non-positioning position, and the positioning member moves from the positioning position in conjunction with the clamping operation of the vertical clamp member. The dissimilar machining apparatus according to claim 1, which moves to a non-positioning position.