JPH049703U

JPH049703U -

Info

Publication number: JPH049703U
Application number: JP5093090U
Authority: JP
Priority date: 1990-05-16
Filing date: 1990-05-16
Publication date: 1992-01-28
Anticipated expiration: 2005-05-16
Also published as: JPH0753928Y2

Description

[Brief explanation of the drawing]

第１図は本考案になるほぞ取り機の側面図、第
２図は昇降機構部、第３図は昇降レバーと昇降ス
イツチの配置図、第４図は昇降スイツチと接点配
置図、第５図は回路図、第６図、第７図は従来技
術の説明用のほぞ取り機の側面図と回路図である
。図において、８はコイルバネ、１３は昇降スイ
ツチ、１５は昇降レバー、１６は引張バネ、２０
は双方向性スイツチング素子、２１，２２はダイ
オード、２３，２６〜２８，３４は抵抗、２４は
コンデンサ、２５は位相制御回路、２９は可変抵
抗器、３０は検出器、３１は速度電圧発生器、３
２は演算回路、トリガ回路である。 Figure 1 is a side view of the tenon remover of the present invention, Figure 2 is the lifting mechanism, Figure 3 is the layout of the lift lever and lift switch, Figure 4 is the lift switch and contact layout, and Figure 5. is a circuit diagram, and FIGS. 6 and 7 are a side view and a circuit diagram of a mortising machine for explaining the prior art. In the figure, 8 is a coil spring, 13 is a lift switch, 15 is a lift lever, 16 is a tension spring, and 20
are bidirectional switching elements, 21 and 22 are diodes, 23, 26 to 28, and 34 are resistors, 24 is a capacitor, 25 is a phase control circuit, 29 is a variable resistor, 30 is a detector, and 31 is a speed voltage generator ,3
2 is an arithmetic circuit and a trigger circuit.

補正平２．１２．７図面の簡単な説明を次のように補正する。明細書第１３頁第２行の「トリガ回路」の前に
「３３は」を追加する。Amendment 2.12.7 The brief description of the drawing is amended as follows. "33 is" is added before "trigger circuit" on the second line of page 13 of the specification.

Claims

[Claims for Utility Model Registration] 1. The upper end of a guide bar is held on a base by a bridge, and a cutting head having a vertical saw blade and a horizontal saw blade is fitted to the guide bar so as to be movable up and down,
In a tenoning machine, the cutting head is equipped with an elevating motor and a gear nut driven by the elevating motor on the back of the cutting head, and the gear nut and an elevating screw fixedly installed below the bridge are screwed together to move the cutting head up and down, An elevating lever that is held neutrally by a spring force at a proper position on the bridge and can be swung in the vertical direction is disposed, and a toggle lever portion of a toggle type elevating switch can be operated by swinging the elevating lever. The toggle-type lift switch is electrically connected so that the rotation direction of the lift motor can be directly switched, and a bidirectional switching element is connected in series with the lift motor, and when the cutting head is lowered, a variable resistor is used to set the cutting head at a constant speed. A lifting device for a mortising machine, characterized in that the lifting device is adjustable within a range of 1 to 1, and has a control circuit that short-circuits a variable resistor using the toggle type lifting switch when the cutting head is raised to a preset high speed. 2. The lifting device for a tenon machine according to claim 1, wherein a compression spring is provided between the base and the cutting head to reduce the load on the lifting motor during lifting. 3. The toggle type lift switch has a structure in which when the rotation direction of the lift motor is changed by operating the toggle type lift switch, the contact on the control circuit side closes after the contact on the main circuit side of the lift motor closes. The elevating device for a tenon remover according to claim 1, characterized in that: