JPS6220247Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a control device for a woodworking machine that automatically positions a turret for a multi-axis woodworking machine.

In order to efficiently perform work divided into several processes in various devices such as double-end tenona, autoboring, molder, and trimming saw of woodworking machines, work density in one process is increased as much as possible, and multiple tasks are performed simultaneously. processing, that is, a parallel processing method is adopted. The feature of the woodworking machine that makes this working method possible is that it is equipped with multiple drive shafts dedicated to processing, that is, working motors, and each working motor can be selected arbitrarily depending on the shape and dimensions of each workpiece.
The setting position can be changed, 1
It has a structure that allows it to be used for different types of woodworking machines for multiple purposes. For example, a double-end tenoner with 10 axes has a circular saw shaft, a vertical planer shaft, a vertical planer shaft, and
Equipped with various axes, such as the lower shovel shaft, this machine can process as many as 70 to 80 types of workpieces.

To change the setup, it is necessary to move the turret to the target position by operating a manual handle for each job. Therefore, it requires great skill and skill to perform this work for each axis in a short time and with high accuracy.

The present invention was developed in order to eliminate such drawbacks, and when positioning the tool post in repeated lot production, etc., the previously stored data is reproduced and the data is transferred to the positioning DC servo motor. This device enables automatic positioning to be performed sequentially on each axis by transmitting information, and is equipped with a storage device that stores the position data of each tool post for each job in the form of a table, and one job name in the memory. An object of the present invention is to provide a positioning device for a woodworking machine in which a turret is automatically positioned for each axis by a servo motor by arbitrarily calling it from the outside through a central processing unit.

Hereinafter, the present invention will be explained with reference to the illustrated embodiments. Figure 1 shows a 10-axis double-end tenoner as a typical example of a woodworking machine.
Reference numerals 3, 4, and 5 indicate various types of cutters that are installed at symmetrical positions, and the workpiece to be processed is moved along the table 6 in the direction of the arrow. device 7,
Work such as trenching, planing, and drilling is carried out continuously during the process of passing through the eight chambers. There is no problem if you continue to perform the same work, but if the work name is different, the dimensional cutter will be selected for each type of turret according to its processing specifications, so the operator must Position the tool rest by referring to the tool set table in the work specifications. At that time,
As shown in Figure 2, each tool post is equipped with a DC servo motor that can automatically move it in forward and reverse directions.
SM ₁ , SM ₂ , . . . SM _o are provided, and each DC servo motor is directly connected to a position detector, for example, a rotary encoder S ₁ , S ₂ , . . . S _o . Then, the signal transmitted to the servo amplifier SP of the servo motor's output element via the positioning controller PP, which controls and confirms the amount of movement based on commands from the central processing unit CP, is selected by each axis selection switch A. Drives a DC servo motor. The changeover switch B that switches the output signals of the position detectors S ₁ , S ₂ ...S _o works in conjunction with the selection switch A, and selects the same servo motor and position detector. The signals obtained are fed back to the central processing unit CP, and as shown in Fig. 3, the current position data of the turret for each work name, that is, for each axis number is displayed in a table. It is stored in the storage device M as . The OP is an operation panel that allows the operation name stored in the storage device associated with the table to be called up arbitrarily from the outside through the central processing unit.

The operation of the present invention configured as described above will be explained based on the flowchart shown in FIG. Now, in step 1S, the positioning data for each job name stored in advance is sent to the central processing unit from the operation panel OP.
When input to CP, in step 2S, the central processing unit CP searches the storage device M to see if the predetermined work name data is stored, and when a match is found, the DC servo motor SM ₁ , SM ₂
...Selection switch A of SM _o and changeover switch B of position detectors S ₁ , S ₂ ...S _o are switched to the first axis number in step 3S, and at the same time, the positioning controller PP is connected to the output side thereof. The signal is transmitted to the servo amplifier SP, which drives the servo motor in step 4S. When the turret completes movement by the specified amount of data and a matching signal is seen, the signal is transferred to the central processing unit CP, and according to the command, it switches to the next selected movement axis number.
In this way, it is checked in step 5S whether reproduction positioning has been performed for all set axis numbers, and when reproduction positioning has been completed for all axis numbers, the central processing unit stops operating.

Therefore, according to the present invention, regardless of whether the work is a lot work or an interruption work using a double-end tenoner, etc.,
If the job name is already based on stored data, there is no need to manually set the tool post on the turret based on the job specifications each time, and repositioning can be done by pressing a button, so it can be done in a short time. complicated,
It is very effective in setting up this type of woodworking machine, which requires highly accurate multi-axis positioning.

For example, according to actual measurement data, it has been reported that the setup work that conventionally required about two hours can be completed in about one minute using the device of the present invention. In addition, it eliminates workpiece machining defects due to incorrect settings of the tool post and eliminates the need for special skill on the part of the operator.
If you store the work name data of each type all at once and use it as a power backup storage device, you won't have to worry about power outages, and automatic positioning can be performed by selecting a program number for each job, freeing you from the hassle of setup work. .

[Brief explanation of the drawing]

Figure 1 is a side view of a double-end tenona as a typical example of a woodworking machine tool in which the present invention is implemented;
Fig. 3 is a block diagram of a storage/reproduction circuit showing the configuration of the present invention, Fig. 3 is an example of a table of positioning data for each paired shaft number showing an example of memory contents, and Fig. 4 is a flowchart showing the operation of the present invention. It is a chart diagram. 1, 2, 3, 4, 5...Cutter, 6...Table, 7...Feeding device, 8...Feeding device, CP...
Central processing unit, M...Storage device, OP...Operation panel, PP...Positioning controller, SP...Servo amplifier, A...Selection switch, SM ₁ , SM ₂ ...
SM _o ...DC servo motor, S ₁ , S ₂ ...S _o ... Position detector, B... Selector switch.

Claims (1)

[Scope of utility model registration request] A circular saw shaft, an upper and lower horizontal planer shaft, a vertical planer shaft, a lower lattice shaft, etc. are provided at symmetrical positions in the direction of workpiece movement, and a servo motor capable of forward and reverse rotation is provided for each turret of each of the various axes, and the above-mentioned A table on which a workpiece to be machined by a blade of a tool post is placed, a feeding device provided on both sides in the direction in which the workpiece advances on the table and at the top and bottom, and directly connected to the servo motor. a position detector for detecting the current position of the servo motor; a first selection switch for connecting a series circuit of a positioning control device and a servo amplifier to one of the servo motors based on a command from a central processing unit; a second selection switch that switches in conjunction with the first selection switch; and a signal from the second selection switch is returned to the central processing unit, and each of the above-mentioned items related to the work name is sent via the central processing unit. Equipped with a storage device that stores the current position data of the servo motor as a table, and an operation panel that allows the work name stored in the storage device to be called up arbitrarily from the outside through a central processing unit, it is possible to perform storage and playback positioning. A control device for a woodworking machine characterized by: