A geometric error identification method of multi-axis machine tool includes a measuring step of indexing a position of a target ball mounted on one of a main spindle and a table into a plurality of angles around an rotation axis, and measuring the position of the target ball at respective indexed positions by using a touch probe mounted on the other one of the main spindle and the table, a geometric error calculation step of calculating a geometric error from the measured position of the target ball, an ellipse-expression calculation step of calculating an ellipse approximate expression by an arc trajectory measured by operating the rotation axis, and an error correcting step of calculating and correcting a scaling error of translation axes from the calculated ellipse approximate expression.

Geometric error identification method of multi-axis machine tool and multi-axis machine tool

The invention provides vacuum laser welding equipment and method and belongs to the technical field of welding. The equipment and method provided by the invention are used for solving the problems of inconvenience for realization of flexible processing and energy loss in a welding technology. The equipment is characterized in that a workbench is arranged on the bottom plate of a vacuum capsule; a triaxial linkage system is arranged on the inner side wall of the vacuum capsule; a laser head is arranged on the triaxial linkage system; vacuum pumping system is arranged on the outer side wall of the vacuum capsule; the laser head is connected with a laser generator through an optical fiber; the laser head is connected with a numerical control device through a cable; and a water-cooling machine is used for cooling the laser head. The method comprises the following steps: moving the workbench out of the capsule, arranging a workpiece to be welded on the workbench, then moving the workbench into the capsule and closing the door of the capsule; starting up the vacuum pumping system, starting up the laser generator, the numerical control device and the water-cooling machine when the vacuum degree in the capsule reaches the vacuum degree required by the workpiece, and welding; and after welding is finished, injecting air into the capsule, opening the door of the capsule after the air pressure in the capsule reaches the atmospheric pressure, and taking out the workpiece. The equipment and method provided by the invention are used for welding the workpiece.

Vacuum laser welding equipment and method

The invention relates to a method for producing a guide bevel on a workpiece, in particular a cutting tool. The workpiece to be machined is clamped in a clamping device which is rotationally driven about a rotational axis, and at least one laser unit is provided. The clamping device and the laser unit can be moved relative to each other by means of at least one CNC-controlled axis. The laser unit is of a type that is suitable for machining the workpiece by removing material. In order to produce the margin, the laser unit and the clamping device are controlled such that the workpiece in the clamping device is continuously rotated about the rotational axis of the clamping device at least by a specified angular amount while the laser unit and the clamping device are moved relative to each other at least by a specified distance in order to remove material from the workpiece so as to produce the guide bevel.

Device and method for producing a guide bevel on a workpiece, in particular on a cutting tool

The invention relates to a laser cutting machine and discloses a laser cutting machine tool for a quartz crystal. The laser cutting machine tool comprises a machine body, a cross beam, stand columns, a work table, a slide seat, a rotary shaft, a supporting mechanism, a laser, a cutting head, a suction fan, an electric cabinet and an electric control unit. The slide seat is arranged on the machine body, the supporting mechanism and the work table are arranged above the slide seat, the rotary shaft is arranged above the supporting mechanism, the laser is arranged on the electric cabinet, the cutting head is connected with the laser through an outer optical path and is arranged above the work table, the suction fan is arranged on the side surface of the cutting head, the stand columns are arranged at two sides of the tool body, the cross beam is arranged at the tops of the stand columns, the electric cabinet is arranged at the back of the stand columns, and the electric control unit is respectively connected with the laser and shafts X, Y, Z and W of the machine tool. The laser cutting machine provided by the invention has the advantages of simple structure, high location accuracy, safety and reliability; in addition, the laser cutting machine tool disclosed by the invention can be used for cutting quartz crystal sheet materials and also can be used for cutting quartz crystal tubes.

Laser cutting machine tool for quartz crystal

The invention belongs to the field of archaeology and particularly relates to a repairing method for a broken and defected bronze ware culture relic. The repairing method includes the following steps that firstly, treatment before repairing is conducted; secondly, a repairing model is established; thirdly, a packaging die is prepared; fourthly, welding powder is configured; fifthly, die assembling is conducted; sixthly, power is loaded; seventhly, repairing is conducted; eighthly, aftertreatment is conducted. According to the repairing method, due to an exothermic reaction of self-propagating powder, high-temperature metal liquid with basic components consistent with those of the bronze ware culture relic is obtained, the metal liquid is solidified to be in a specific shape in the packaging die and is firmly metallurgically bonded to a base body, and therefore the repairing of the broken and defected bronze ware culture relic is achieved. According to the repairing method for the broken and defected bronze ware culture relic, filler metal components can be flexibly adjusted according to basic components of bronze ware or special requirements, equipment of the repairing method is simple, energy such as electric energy and light energy does not need to be consumed in the repairing process, the repairing cost is low, the repairing method is suitable for repairing various forms of broken and defected bronze ware culture relics, universality is good, the repairing speed is high, efficiency is high, and field operation can be achieved.

Repairing method for broken and defected bronze ware culture relic

The utility model provides a multi-shaft linkage numerical control laser processing system, the structure of which is as follows: a working table is provided with a straight line guide rail; both ends of the guide rail are respectively provided with a working table tailstock and a headstock; two open central brackets are movably arranged on the guide rail and positioned between the working table tailstock and the headstock; a guide rail platform is arranged beside the working table and provided with another parallel guide rail on which a movable sliding table is arranged; a robot is fixed on the movable sliding table; a laser processing head is arranged on the tail end of the last joint of the robot and connected with a laser by an optical fiber; a cooling machine is respectively connected with the laser and the laser processing head by cooling pipes; and a controller is respectively connected with the robot and the movable sliding table by control lines to control the robot and control the movable sliding table to drive the robot to slide on the guide rail table. The system solves the problem that the laser processing system of the joint robot has small processing range, and can meet the numerical control laser processing requirements of large-sized and oversized parts.

Multi-shaft linkage numerical control laser processing system

The invention discloses a multi-axis linkage numerical control laser processing device, which is structurally characterized in that a cross beam of a gantry framework is provided with a linear guide rail, a robot sliding stand is arranged on the linear guide rail, a first servo motor is arranged on an upright post of the gantry framework, and the motor controls the robot sliding stand to move along the linear guide rail; a robot is fixedly connected to the robot sliding stand and is inversely hung above the cross beam of the gantry upright post through the sliding stand, and a laser processing head is arranged on the robot; the processing head is connected with a laser device through fibers; a cooler is connected with the laser device and the laser processing head through cooling tubes respectively; a workbench is positioned under the gantry framework, a headstock is fixed at the end part of the workbench, and a tail seat is movably arranged on the workbench; a second servo motor controls the relative movement between a workpiece to be processed on the workbench and the gantry framework; and a controller is connected with the robot and the sliding stand through control wires respectively The device improves the flexibility and automatic control capacity of laser processing, and can meet the numerical control laser processing requirements of parts of large size and super-large size

Numerical control laser processing device

The invention discloses a method for utilizing laser welding to repair an ancient chime bell, comprising the following steps of: (1) cleaning welding seam areas of the chime bell; (2) clamping and fixThe invention discloses a method for utilizing laser welding to repair an ancient chime bell, comprising the following steps of: (1) cleaning welding seam areas of the chime bell; (2) clamping and fixing tightly the chime bell to be welded and repaired so as to lead the crack area to be close as possible; (3) welding and repairing the chime bell with laser by three conditions; (4) polishing the weing tightly the chime bell to be welded and repaired so as to lead the crack area to be close as possible; (3) welding and repairing the chime bell with laser by three conditions; (4) polishing the welding seams; (5) rectifying the shape of the chime bell; (6) modulating the tune of the chime bell; and (7) finishing. For the basic characteristics of the welding joint required by the repairing proclding seams; (5) rectifying the shape of the chime bell; (6) modulating the tune of the chime bell; and (7) finishing. For the basic characteristics of the welding joint required by the repairing process of the chime bell, such as metallurgical bonding, high strength, little and less deformation and no metallurgical defect and the like, the invention adopts laser welding technology to repair damagess of the chime bell, such as metallurgical bonding, high strength, little and less deformation and no metallurgical defect and the like, the invention adopts laser welding technology to repair damaged chime bell and simultaneously recover the tone quality, tone frequency and tone color of the chime bell.ed chime bell and simultaneously recover the tone quality, tone frequency and tone color of the chime bell.

Method for utilizing laser welding to repair ancient chime bell

The utility model discloses a multi-shaft ganged numerical control laser processor. The structure of the numerical control processor is as follows: a beam of a portal frame is provided with a linear guide rail; a robot sliding table is arranged on the linear guide rail; a first servo motor is arranged on an upright of the portal frame; a motor controls the robot sliding table to move along the linear guide rail; a robot is fixedly connected on the robot sliding table and inversely hung on the beam of the upright of the portal frame through the sliding table; a laser processing head is arranged on the robot; the processing head is connected with a laser device by optical fiber; a cooler is respectively connected with the laser device and the laser processing head by cooling pipes; a work bench is positioned below the portal frame, a headstock is fixed at the end part of the work bench, and a tailstock is movably arranged on the work bench; a second servo motor controls workpieces to be processed on the work bench to move relative to the portal frame; and a controller is respectively connected with the robot and the sliding table by control lines. The multi-shaft ganged numerical control laser processor improves the flexiblized and automated control capability of laser processing, and can meet the requirement on numerical control laser processing of big-size and super-size parts.

Xiaoyan Zeng

Papers

Multi-shaft linkage numerical control laser processing system

Numerical control laser processing device

Method for utilizing laser welding to repair ancient chime bell

Numerical control laser processor