Horizontal band saw machine

• US 4,805,500 A
• Filed: 06/27/1986
• Issued: 02/21/1989
• Est. Priority Date: 06/29/1985
• Status: Expired due to Term

• Current Assignee: Amada Company Limited
• Original Assignee: Amada Company Limited
• Inventors: Kumazawa, Hisao, Yoshishige, Toshihisa, Tokiwa, Toru, Saito, Shuichi
• Primary Examiner(s): Yost, Frank T.
• Assistant Examiner(s): Jones, Eugenia A.
• Application Number:
  US06/879,625
• Time in Patent Office: 970 Days
• Field of Search: 83/277, 83/374, 83/375, 83/380, 83/388, 83/390, 83/168, 83/63, 83/72, 83/796-797, 83/800, 279/1 B, 279/89, 279/90, 279/94, 279/95, 279/104, 51/168, 51/377, 403/348, 403/349, 15/256.5, 15/21 D, 15/23
• US Class Current: 83/277
• CPC Class Codes: B23D 53/045 with pivotedly mounted head carrying the saw wheels
• CPC Class Codes: B23D 55/043 for conveying work to the sawing machine
• CPC Class Codes: B23D 59/001 Measuring or control devices, e.g. for automatic control of work feed pressure on band saw blade measuring in general G01; controlling in general G05
• CPC Class Codes: B27B 31/06 Adjusting equipment, e.g. using optical projection see also B27L5/022
• CPC Class Codes: Y10T 83/242 With means to clean work or tool
• CPC Class Codes: Y10T 83/4632 Comprises a work-moving gripper
• CPC Class Codes: Y10T 83/5669 Work clamp
• CPC Class Codes: Y10T 83/5805 Fluid pressure yieldable drive means
• CPC Class Codes: Y10T 83/7114 Including means to permit arcuate in-feed motion
• CPC Class Codes: Y10T 83/7139 With fluid in-feed regulating means

Abstract

A horizontal bandsaw has a main vise positioned slightly to the rear of the cutting location for gripping the workpiece during cutting, a material feed vise positioned to the rear of the main vise for feeding material into the cutting location, and a front vise positioned to the front of the cutting location. The front vise can move to a position to the rear of the cutting location to retrieve a small remnant of uncut material. The three vises each have a movable and a fixed jaw. A lower limit guide is provided on the main vise movable jaw which adjusts the descent of the cutting tool to the width of the workpiece. The fixed jaws are provided with means located within the operating area of the jaws for a slight advance or retraction of the contact face, to firmly grip the workpiece or to retract the contact face so as to prevent frictional contact with the workpiece. The movable jaws have a hydraulic cylinder built into a sliding tube for providing reciprocating motion. A moving position detection device is mounted on the material feed vise for determining the extent of longitudinal motion of the material feed vise so that the material feed vise can be positioned at a presecribed position. A laser beam head is mounted on the cutting head to verify accuracy of positioning of the workpiece. A rotating brush device has an easy mounting and dismounting construction.

Claims

1. A cutting apparatus comprising:

a base;

a cutting head provided in a freely elevatable manner on the base;

a cutting tool mounted on the cutting head for cutting a workpiece;

a main vise device for grasping and securing the workpiece, positioned on the rear side of a cutting position where the cutting of a workpiece is performed, the main vise device having a vise bed, a fixed vise jaw mounted on one side of the vise bed, and a movable vise jaw mounted on the other side of the vise bed for grasping the workpiece in cooperation with the fixed vise jaw;

a lower limit detection device provided on one of the base and the cutting head to detect the lower limit of the cutting head; and

a lower limit setting device, provided on the other of the base and the cutting head, for activating the lower limit detection device to regulate the lower limit of the cutting head, the lower limit of the cutting head being determined by the lower limit detection device detecting the lower limit setting device;

wherein the lower limit detection device or the lower limit setting device on the base side is connected to the movable vise jaw for movement so that the position of the lower limit detection device or the lower limit setting device on the base side is changed in accordance with the width of the workpiece.

2. The cutting apparatus of claim 1, wherein the lower limit detection device is provided on the cutting head side, and the lower limit setting device provided on the base side is displaced in the vertical direction in correspondence with the movement of the movable vise jaw.

3. A cutting apparatus comprising:

a base;

a cutting head provided in a freely elevatable manner on the base;

a cutting tool mounted on the cutting head for cutting a workpiece;

a main vise device for grasping and securing the workpiece, positioned on the rear side of a cutting position where the cutting of a workpiece is performed, the main vise device having a vise bed, a fixed vise jaw mounted on one side of the vise bed, and a movable vise jaw mounted on the other side of the vise bed for grasping the workpiece in cooperation with the fixed vise jaw;

a lower limit detection device provided on one of the base and the cutting heads to detect the lower limit of the cutting head; and

a lower limit setting device, provided on the other of the base and the cutting head, for activating the lower limit detection device to regulate the lower limit of the cutting head, the lower limit of the cutting head being determined by the lower limit detection device detecting the lower limit setting device;

wherein the lower limit detection device or the lower limit setting device on the base side is connected to the movable vise jaw for movement so that the position of the lower limit detection device or the lower limit setting device on the base side is changed in accordance with the width of the workpiece;

wherein the lower limit detection device is provided on the cutting head side, and the lower limit setting device provided on the base side is displaced in the vertical direction in correspondence with the movement of the movable vise jaw; and

wherein the lower limit setting device provided on the base side comprises;

a threaded rod vertically provided in a freely rotatable manner; and

a nut member which is screwed onto the threaded rod for vertical motion;

wherein the threaded rod is associated with the movable vice jaw through a rack and pinion gear means.