JPH0611950U - Cutting tool type detector - Google Patents

Abstract

(57) [Abstract] [Purpose] Automatically detects the type of cutting tools when they are attached to the head. [Structure] Between a tool T and a head H to which it is attached, a positioning means 3 composed of a protrusion 1 and a groove 2 which are engageable with each other is provided, and the tool T is fixed at a fixed position with reference to this.
A type display unit 5 having unevenness according to the type of the tool T is provided. A detector 4 for detecting the head 5 is provided at a fixed position of the head H corresponding to the position of the type display means 5, and the type of the tool T is discriminated by the detection output.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cutting tool for woodworking, and a device for automatically detecting the type when the tool is attached to a head.

[0002]

[Prior art]

 For example, when mounting a blade on the head of a carpenter's corner cutter, the type of the blade has not been mechanically determined or detected in the past, so the operator must remember it and perform the necessary processing. I've done it. Therefore, if the length of the blade differs depending on the type and the amount of movement of the head changes accordingly, the operator conventionally has to manually make adjustments.

[0003]

[Problems to be solved by the device]

 The present invention has been made in view of the above points, and its problem is to be able to automatically detect the type when a tool is attached to the head of a machine using the tool.

[0004]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the present invention provides a positioning means comprising a projection 1 and a groove 2 which are engageable with each other for defining a mounting position of the tool T between a tool T and a head H for mounting the tool T. 3 is provided, a plurality of detectors 4 for detecting the type of the tool T are installed at fixed positions of the head H, and the type display means 5 comprising the presence or absence of unevenness detected by these detectors 4 is provided. This means is provided outside of the tool T near the head.

[0005]

【Example】

 A description will be given below with reference to the drawings. The figure relates to an example in which the device of the present invention is applied to a corner chisel for woodworking, and only the corner which is the tool T is set in the vertical direction of the front of the corner chisel A (FIGS. 1 to 3).

In the figure, 10 is a processing table having only a corner installed in the center of the front of the machine, 11 is a fixing means for fixing the workpiece W on the processing table 10, 12 is an operating lever of the same means, and 13 is the processing table 10. The tool T is mounted on the head H directly above the workpiece W and can be moved up and down.

Positioning means 3 is provided between the tool T and the mounting head H, and the circumferential position of the tool T is defined so that the tool T is mounted on the head H in a correct positional relationship. The positioning means 3 comprises a groove 2 formed on the side of the tool T that contacts the head H, and a protrusion 1 provided so as to project so as to engage with the groove 2 (FIG. 4).

The illustrated groove portion 2 is formed by cutting out a part of an annular projecting portion 14 provided on the upper part of the tool T, and the projecting portion 1 is provided on the lower surface of the head H so as to project downward. There is. The protrusion 1 and the groove 2 may be provided in the tool T and the head H in the reverse relationship. Reference numeral 15 indicates an upper end connecting portion of the tool T, and 16 indicates a connecting hole of the head H which receives the upper connecting portion. In each figure, 20 is a motor board to which a motor 21 is attached, 22 is a power transmission cover, 23 is a bearing unit, 24 is a quick chuck of a knife, 25 is a joint shaft, 26 is a corner holder, and 27 is an LM guide. Show.

In order to detect such a type of the tool T, two detectors 4 are installed at fixed positions on the lower surface of the head H at intervals, and the type display means 5 detected by the detector 4 is the head of the tool T 1. It is provided outside of the side.

The detector 4 is composed of an approach switch that detects and operates an object at a close position without touching it, and in the case of the embodiment, there are two mounting ports 17 opened on the lower surface of the head H. It is attached by being fitted in each.

As the type display means 5, two convex portions 6-1 and 6-2 are provided outside the tool T located directly below the detectors 4-1 and 4-2, respectively. The protrusions 6-1 and 6-2 are pins formed on the annular protruding portion 14 of the tool base.

Therefore, there are three types of combinations (having a convex portion 6-1 only, a case having only the convex portion 6-2, and a case having both the convex portions 6-1 and 6-2) If there are no cases, it will be possible to combine 4 types (Fig. 6).

As described above, the pin-shaped convex portion 6 is provided on the annular projecting portion 14 together with the groove portion 2 serving as a positioning reference, and can be used as means for determining the type of the three or four types of tools T. Wear.

Accordingly, when the tool T having the presence or absence of the convex portion 6 or the positions of the convex portions 6-1 and 6-2 different from each other is mounted on the head H, the presence or absence or the position of the convex portion 6 ... It can be read, and if necessary, the read signal can be output to the control system of the corner only machine.

The proximity switch is best because the detector 4 can be installed independently from each other without malfunction due to contact, and the proximity switch is the best, but this switch must be used. Instead, contact switches can also be used.

[0016]

[Effect of device]

 Since the present invention is constructed and operates as described above, by mounting the desired tool T on the head of the machine to be used, the mounting position of the tool T is correctly determined by the positioning means 3 and in that state. The presence or absence of the type display means 5 provided on the tool or the position and number of the convex portions 6 are detected by the detector 4, so that the type of the tool T 1 can be quickly and accurately known at the same time as mounting on the head. It has remarkable effects such as being able to.

[Brief description of drawings]

FIG. 1 is a side view of a main part of a corner-only machine incorporating the device of the present invention.

FIG. 2 is a front view of the same.

FIG. 3 is a bottom view of the same.

FIG. 4 is an explanatory perspective view showing an embodiment of the device of the present invention.

FIG. 5 is a sectional view of a main part of the same.

FIG. 6A is a plan view showing a first example of installation positions of convex portions. (B) The top view which shows the 2nd example of the installation position of a convex part. (C) The top view which shows the 3rd example of the installation position of a convex part.

Claims (3)

[Scope of utility model registration request] 1. A positioning means 3 is provided between a tool T and a head H to which the tool T is mounted, the positioning means 3 including a projection 1 and a groove 2 which are engageable with each other to define a mounting position of the tool T. A plurality of detectors 4 for detecting the type of the tool T are installed at fixed positions of the head H, and the type display means 5 including the presence / absence of unevenness detected by these detectors 4 is provided near the head of the tool T. A type of cutting tool detection device, which is provided outside the machine. 2. The type detection device for a cutting tool according to claim 1, wherein the type display means 5 is provided with one or two or more protrusions 6 protruding outside the tool T. 3. A proximity switch as the detector 4 is a head H.
The type detecting device for a cutting tool according to claim 1, wherein the type detecting device is provided so as to face downward.