Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Machine and tool replacement methods

A tool replacement and tool technology, applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc., can solve problems such as the deviation of the spindle from the origin position

Active Publication Date: 2017-04-12
BROTHER KOGYO KK
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there is a problem that the position of the main axis will greatly deviate from the position of the origin

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Machine and tool replacement methods
  • Machine and tool replacement methods
  • Machine and tool replacement methods

Examples

Experimental program
Comparison scheme
Effect test

Deformed example 1

[0087] In the machine tool 100 of Modification 1, at least until the tool 4 is detached from the spindle 34 for tool replacement, the control method of the spindle motor 31 is changed from the rotation control based on the differential value and the cumulative value to the control method based on the differential value without using the cumulative value. Rotation control toggle by value. When the tool 4 is detached from the spindle 34, the machine tool 100 does not perform rotation control based on the accumulated value. Therefore, when the turning tool (non-rotating tool) is removed for replacement, it is possible to prevent the spindle 34 from rotating to a position largely deviated from the origin position due to the accumulation of errors of the spindle 34 relative to the origin position.

Deformed example 2

[0089] The machine tool 100 of Modification 2 determines whether the tool 4 attached to the spindle 34 is a rotary tool or a turning tool (non-rotary tool). The machine tool 100 switches the rotation control method of the spindle motor 31 according to the determination result. The machine tool 100 stores, for example, a machining program describing workpiece machining conditions, machining details, machining commands, etc., in the storage unit 81 c of the control device 80 . The control unit 81 of the control device 80 processes the workpiece by controlling the X-axis drive control unit 82 to the C-axis drive control unit 87 and the like based on the machining program stored in the storage unit 81c. The machine tool 100 determines whether the tool attached to the spindle 34 is a rotary tool or a turning tool based on the contents of the machining program or the like.

[0090] The control unit 81 of the control device 80 sequentially reads commands from the first line of the m...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

PROBLEM TO BE SOLVED: To provide a machine tool and a tool replacement method which can avoid the action of excessive load on a motor rotating a main shaft and the like even when tool replacement is executed in a state where a non-rotating tool is mounted on the main shaft.SOLUTION: In the machine tool, a subtractor 92 calculates a value corresponding to a difference between a target position and a current position of a main shaft around an axis, and an accumulator 93 calculates a cumulative value of the difference value. The machine tool controls rotation of the main shaft by switching between rotational control of a main shaft motor based on both of the difference value calculated by the subtractor 92 and the cumulative value calculated by the accumulator 93 and rotational control of the main shaft motor based on the difference value without the cumulative value. The machine tool controls rotation of the main shaft motor based on the difference value and the cumulative value from a processing position to a switching position and controls rotation of the main shaft motor based on the difference value from the switching position to a replacement position.

Description

technical field [0001] The present invention relates to a machine tool and a tool replacement method for replacing a tool stored in a storage unit with a tool attached to a spindle. Background technique [0002] Machine tools include spindles, supports and tool magazines. The spindle is used to mount the tool. The supporting part supports the workpiece and can rotate around the vertical axis. The tool magazine stores the tools attached to the spindle. Tools include rotary tools and non-rotary tools. The rotary tool rotates together with the spindle. Non-rotating tools are fixed to the spindle head that supports the spindle and therefore do not rotate. When the rotary tool is attached to the spindle, the workpiece does not rotate around the vertical axis. The machine tool processes the workpiece by fixing the workpiece to the support and rotating the spindle. When a non-rotating tool is attached to the main shaft, the workpiece rotates around the vertical axis together...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B23Q3/155
CPCB23Q3/1556
Inventor 寺田弦
Owner BROTHER KOGYO KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com