JP4312884B2 - Machine tool equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a machine tool that processes a workpiece in two steps.
[0002]
[Prior art]
In general, this type of machine tool includes two processing units, a workpiece transfer loader, a workpiece reversing device, and a quality control measuring device as essential elements. For example, the conventional turning machine tool shown in FIG. 3 includes a parallel two-spindle lathe 31, two reversing devices 32 and 33, a loader 34, a measuring device 35, a material stocker 36, and a product stocker 37. Yes. The lathe 31 is provided with a first processing unit 38 that performs processing in the first step and a second processing unit 39 that performs processing in the second step. Conventionally, as shown in FIG. 4, a machine tool in which two lathes 41 and 42 are arranged side by side with a measuring device 43 interposed therebetween is also known.
[0003]
[Problems to be solved by the invention]
However, in the conventional machine tool shown in FIG. 3, when a portion machined in the first step is inspected by the measuring device 35 after the second step, if a machining defect is found here, Not only the workpiece W4 but also the workpiece W1 being machined by the first machining unit 38, the workpiece W2 on the reversing device 33, and the workpiece W3 being machined by the second machining unit 39 are each a defective product. there is a possibility. If the workpiece is transported to the measuring device 35 and inspected immediately after the first step, the number of defective products is reduced to a maximum of two, the workpiece W4 on the measuring device 35 and the workpiece W1 being processed by the first processing unit 38. As indicated by arrows in FIG. 3, it is necessary to move the loader 34 from the first processing unit 38 to the measuring device 35, and from the measuring device 35 to the reversing device 32. This causes a problem that the conveyance time is increased and the line tact is extended. There is. Further, in the case of the machine tool of FIG. 4, it is necessary to provide a gap between the two lathes 41 and 42 in order to install the measuring device 43, which has the disadvantage of increasing the installation space of the entire machine. It was.
[0004]
Therefore, an object of the present invention is to provide a machine tool capable of minimizing the occurrence of defective products, shortening the line tact, and reducing the installation space.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, a machine tool according to the present invention includes a processing machine in which a first processing unit and a second processing unit are arranged side by side, a first reversing device that reverses a workpiece above the processing machine, and a second one. The reversing device, the loader that transports the workpiece from the first processing unit to the first reversing device and the second reversing device to the second processing unit, and the first processing unit installed between the first and second reversing devices. It consists of a measuring device that measures the workpiece immediately after.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings. As shown in FIG. 1, the machine tool of this embodiment includes a parallel 2-spindle type lathe 1 as a processing machine. The lathe 1 includes a first processing unit 2 that performs the first process, and a second process. The 2nd process part 3 which performs this process is arranged in parallel by right and left. A material stocker and a product stocker (not shown) are installed on the left and right of the lathe 1 as in the prior art. Above the lathe 1, a first reversing device 4 and a second reversing device 5 for reversing a workpiece (not shown) are disposed at positions corresponding to the first processing unit 2 and the second processing unit 3, respectively.
[0007]
The beam 6 installed above the lathe 1 is provided with a loader 7 that can be traversed and raised and lowered, and a pair of hands 8A and 8B that hold a workpiece are supported by the beam 6 so as to be able to turn 90 ° in a vertical plane. In the lathe 1, the workpiece is conveyed from the first machining unit 2 to the first reversing device 4 and from the second reversing device 5 to the second machining unit 3. And between the 1st inversion apparatus 4 and the 2nd inversion apparatus 5, the measuring apparatus 9 which measures immediately after processing a workpiece | work by the 1st process part 2 is installed.
[0008]
As shown in FIG. 2, the first reversing device 4 and the second reversing device 5 are each provided with air chucks 11 and 12 that are attached to a suspension frame 10 fixed to the beam 6 and grip a workpiece. The air chuck 11 of the first reversing device 4 can be moved up and down by a cylinder 13, can be turned 90 ° in a horizontal plane by a cylinder 14, and can be advanced and retracted by a cylinder 15 at a turning end position. The air chuck 12 of the second reversing device 5 is provided so as to be able to turn 90 ° in a horizontal plane by a cylinder 16 and to be advanced and retracted at a turning end position by a cylinder 17.
[0009]
The substrate 19 of the measuring device 9 is attached to the suspension frame 10 between the reversing devices 4 and 5. A sensor unit 20 is supported on the substrate 19 by a cylinder 21 through a guide 22 so as to be movable between a front measurement position and a rear retraction position. The sensor unit 20 is provided with a measurement feeler 23 and a work allowance 24, and the allowance 24 is formed with a hole 25 through which the feeler 23 enters and exits. And in the measurement position of the sensor unit 20, the feeler 23 measures the processed part of the workpiece in a state where the abutment 24 faces the workpiece held by the air chuck 11 of the first reversing device 4. Yes.
[0010]
Next, the operation of the machine tool configured as described above will be described. When the first machining section 2 of the lathe 1 finishes the first process, first, the loader 7 moves to the first machining section 2, and the hand 8B receives the machined workpiece and moves up (path a in FIG. 1). ). Next, the first reversing device 4 descends and advances, and the air chuck 11 receives the workpiece from the hand 8B (path b in FIG. 2). Next, after the first reversing device 4 moves backward and rises (path c in FIG. 2), the first and second reversing devices 4 and 5 turn 90 ° to the opposite positions (paths d and k in FIG. 2). ). Subsequently, after the measuring device 9 moves forward (path e in FIG. 2), the first reversing device 4 moves forward to the measuring device 9 side and presses the workpiece against the contact 24 (path f in FIG. 2). In this state, the feeler 23 moves forward to the first reversing device 4 side (path g in FIG. 2) and measures the first process machining portion of the workpiece.
[0011]
After the measurement, the feeler 23 moves backward (path h in FIG. 2), and the measuring device 9 and the first reversing device 4 move backward (paths i and j in FIG. 2). Then, the first and second reversing devices 4 and 5 move forward (paths f and l in FIG. 2), and the work is transferred and reversed between both. Next, the reversing devices 4 and 5 move backward (paths j and m in FIG. 2) and turn forward 90 ° respectively (paths n and r in FIG. 2), and then the second reversing device 5 moves forward ( 2, the work is transferred from the air chuck 12 to the hand 8 </ b> A of the loader 7. Thereafter, the loader 7 is lowered (path p in FIG. 1), and the workpiece is mounted on the second machining unit 3 of the lathe 1 from the hand 8A.
[0012]
Therefore, according to the machine tool of this embodiment, the following effects can be expected.
(1) Since the workpiece is measured immediately after the first step, the number of defective products can be minimized.
(2) Since the measurement is performed in the middle of the reversing operation, it is not necessary to move the loader 7 to and from the measuring device 9, and the line tact can be shortened.
(3) Since the air chucks 11 and 12 of the reversing devices 4 and 5 are provided so as to be able to turn, and the measuring device 9 is installed in both open spaces, the entire space of the lathe 1 can be used effectively and the entire machine tool The installation space can be reduced.
(4) Since the sensor unit 20 of the measuring device 9 is provided so as to be movable between the measurement position and the retracted position, it is possible to easily cope with a change in specification of whether or not measurement is performed.
(5) A frame dedicated to the measuring device 9 is not required and can be configured at low cost.
[0013]
In the above-described embodiment, a machine tool provided with two machining parts on a single machining machine is taken as an example, but a separate machine tool may be used for each machining part. In addition, the present invention is not limited to the above-described embodiments. For example, a grinding machine or a milling machine is used as a processing machine, and the shape and configuration of each part are appropriately changed without departing from the gist of the present invention. It is also possible to
[0014]
【The invention's effect】
As described above in detail, according to the present invention, the measuring device is installed between the first reversing device and the second reversing device above the processing machine, and the workpiece is measured immediately after being processed by the first processing unit. Thus, it is possible to minimize the occurrence of defective products, shorten the line tact, and reduce the installation space.
[Brief description of the drawings]
FIG. 1 is a perspective view of a machine tool showing an embodiment of the present invention.
FIG. 2 is an enlarged perspective view showing a reversing device and a measuring device of the machine tool.
FIG. 3 is a front view showing a conventional machine tool.
FIG. 4 is a front view showing another conventional machine tool.
[Explanation of symbols]
1 .... Parallel 2-spindle lathe 2 .... first machining unit 3 .... second machining unit 4 .... first reversing device 5 .... second reversing device 7 .... loader 9 .... measuring device .

Claims (1)

A processing machine in which the first processing unit and the second processing unit are arranged side by side, a first reversing device and a second reversing device for reversing the work above the processing machine, and the work from the first processing unit to the first reversing device. A machine tool facility comprising a loader transported from a second reversing device to a second processing unit, and a measuring device installed between the first and second reversing devices and measuring a workpiece immediately after being processed by the first processing unit.

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