JPH0645308Y2 - Brake device for rotary shaft with encoder - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention relates to a rotary shaft brake with an encoder mounted on the rotary shaft of a manual handle for operating a woodworking machine, a ruler installed in a machine tool, a lifting mechanism, and the like. It relates to the device.

[Conventional Technology] (a) Jikkō Sho-46-17029, Jikkō Sho-18-18320, Jikkou Shokaku 52
-Move the saw blade, cutter, and other cutting tools and rulers by rotating the manual handle provided on the gear shaft or the No. 5354 screw rod.

(B) No. 62-26163 Jitsuko Sho. The servomotor provided at one end of the screw rod is controlled by NC to rotate and adjust the machining head and table.

[Problems to be Solved by the Invention] In the prior art (a), since the handle is manually operated, the dimensions, positioning, etc. are lacking in certainty, and it is necessary to make a trial cut during processing to confirm the operation, which requires skill. Things
(B) is automated by NC control of the servo motor as a means for coping with this, but not only becomes large in size depending on the model, but also expensive.

[Means for Solving the Problems] In view of the above problems, the present invention provides a device for stopping the rotation of a handle for transferring a ruler, a tool, etc. at a desired size and position preset in a manual operation. In order to satisfy this, in order to satisfy this, an electromagnetic brake mechanism fixed to the box body and provided around the outer periphery of the rotating shaft, and the electromagnetic brake mechanism that rotates together with the rotating shaft and is attracted to the electromagnetic brake only when excited The slit disk of the encoder is provided facing each other, and the detector of the encoder is arranged on the slit disk, and the encoder and the electromagnetic brake mechanism display the distance of the current position and the desired set distance detected by the encoder, and The control counter that issues an excitation command to the electromagnetic brake mechanism when the set distance is detected is contacted.

[Operation] By attaching a rotary shaft to the operating shaft of a circular saw machine or other manual handle and arranging the device, inputting a desired set distance value such as finishing dimensions to the detector, and then turning the handle. , When the encoder detects the set distance value, the detector gives an excitation command to the electromagnetic brake mechanism to attract the slit disk and stop the rotation of the handle.

[Effect] Not only a circular saw machine, it can be easily mounted on the rotating shaft of the adjusting mechanism etc. by the manual handle arranged on all models, and the desired position can be obtained simply by inputting the desired distance value and rotating the handle. Stopping at does not require skill, workability,
As a result, work efficiency is also improved.

[Embodiment] (1) In FIGS. 1 and 2, reference numeral 1 is a box, and an electromagnetic brake mechanism composed of an electromagnetic coil 3 and a permanent magnet 4 with a cylindrical rotary shaft 2 provided laterally on the box 1. 5 and the slit disk 6 of the encoder are arranged to face each other,
The electromagnetic brake mechanism 5 is provided around the cylindrical rotary shaft 2 via a bearing 2'and is fixed to the inner wall of the casing 1, and the slit disk 6 is provided with a spline hole 6'at the center thereof to form the cylindrical rotary shaft 2
A spline 7 engraved on the outer periphery of the slit disk 6, and a leaf spring 8 urged in a direction away from the electromagnetic brake mechanism 5 on the side surface of the slit disk 6,
The encoder detector 9 facing the outer peripheral edge of the slit disk 6 is fixed to the casing 1.

The detector 9 and the electromagnetic brake mechanism 5 display the distance of the current position and the desired set distance detected by the encoder composed of the slit disk 6 and the detector 9 associated with the rotation of the cylindrical rotary shaft 2, and the desired distance is displayed. When a set distance value is detected by an encoder, a control counter 10 that issues a signal to the electromagnetic brake mechanism 5 to instruct an excitation is set as a brake device A for a rotary shaft with an encoder.

FIG. 2 shows a state in which the above-mentioned device A is arranged on a known circular saw machine also disclosed in Japanese Utility Model Publication No. 46-17029.
A pinion shaft 12 'of a ruler moving mechanism 12 including a rack provided on one side and a pinion meshing with the rack, a handle shaft 13' of a circular saw blade lifting mechanism 13, and a handle shaft 1 of the tilting mechanism 14.
Each of 4'is fitted in the hollow portion of the cylindrical rotary shaft 2 of the present apparatus A, and is also arranged on the rotary shaft of a mortise lathe, sizer, tenor, etc. which is manually operated.

[Embodiment] (2) FIG. 3 In this embodiment, the clutch disk 15 can be moved back and forth so as to face the slit disk 6 of the encoder meshed with the spline 7 of the cylindrical rotary shaft 2 in the above-mentioned embodiment (1). A disk 17 'which meshes with the cylindrical rotary shaft 2 and a handle rotary shaft 17 pivotally supported by a support box 16 is provided oppositely and fixed to the end of the handle rotary shaft 17.
And the clutch disk 15 are opposed to each other, the handle rotating shaft 17 is flexed around the rear surface of the disk 17 ', and an electromagnetic coil 18 fixed to the support box 16 is provided around the clutch disk 15, and the clutch disk 15 is normally opposed to the clutch disk 15. A leaf spring 19 which is biased to walk away from the circular disk 17 'is disposed.

The electromagnetic coil 18, the electromagnetic brake mechanism 5, and the encoder detector 9 display the current position distance and the desired set distance detected by the encoder in accordance with the rotation of the tubular rotary shaft 2,
Moreover, when the desired set distance value is detected by the encoder, a command is issued to the electromagnetic brake mechanism 5 to energize it, and an excitation command to the electromagnetic coil 18 releases the clutch disc 15 in the suction continuation normal state by the excitation command. This is a notification to the control counter 10 'that issues an intermittent command.

Each of the embodiments has the above-mentioned configuration. In the embodiment (1), the finishing dimension of the processed material is input to the detector 10 in the ruler moving mechanism 12 of the circular saw machine to be excited in FIG. While manually rotating the handle connected to the pinion shaft 12 ', the ruler is moved from the current position, and when the encoder of the apparatus A detects the finishing dimension, the electromagnetic brake mechanism 5 sends a signal from the detector 10 to the electromagnetic brake mechanism 5. An excitation command is given, the slit disc 6 is attracted against the leaf spring 8, and the rotation of the pinion shaft 12 '(cylindrical rotation shaft 2) is stopped.

In the embodiment (2), the electromagnetic coil 18 is excited by the clutch connection / disconnection command of the detector 10 ', the clutch disc 15 is attracted together with the disc 17', and the handle rotating shaft 17 and the pinion shaft are provided.
From the normal state where 12 '(cylindrical rotary shaft 2) is in a continuous state,
When the handle rotation shaft 17 is rotated to move the ruler, and the encoder detects the finished dimension, the detector 9 issues an excitation command to the electromagnetic brake mechanism 5 and a demagnetization command to the electromagnetic coil 18 to cause the leaf spring 19 to operate. The clutch disc 15 is moved away from the disc 17 'so that the handle rotating shaft 17 is free.

According to each of the above-described embodiments, not only the circular saw machine but also the rotating shaft of the adjusting mechanism or the like by the manual handle arranged in any model can be easily mounted, and the handle is rotated by inputting a desired distance value. Since it stops at the desired position without any skill, the workability and thus the work efficiency are improved. In the embodiment (2), even if an operator collides with the handle due to carelessness during the work, the handle It has no effect because the rotating shaft is free.

[Brief description of drawings]

FIG. 1 shows an embodiment of a rotary shaft brake device with an encoder according to the present invention. FIG. 1 is a vertical sectional side view, FIG. 2 is a state diagram in which the device is mounted on a circular saw machine, and FIG. FIG. 4 is a vertical sectional side view showing the embodiment of FIG. 1 ... Box, 2 ... Rotating shaft (cylindrical rotating shaft), 5 ... Electromagnetic brake mechanism, 6 ... Slit disk, 9 ... Detector, 10
...... Control counter

Claims (1)

[Scope of utility model registration request] 1. An electromagnetic brake mechanism fixed to a box and provided around an outer circumference of a rotary shaft, and a slit disk of an encoder which rotates together with the rotary shaft and which is attracted to the electromagnetic brake only when excited are opposed to each other. The slit detector is provided with an encoder detector, and the encoder and electromagnetic brake mechanism display the current position distance and the desired set distance detected by the encoder, and when the desired set distance is detected, the electromagnetic brake A braking device for a rotating shaft with an encoder that contacts a control counter that issues an excitation command to the mechanism.