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A positioning tool for CNC groove grinding machine

A technology for positioning tooling and grinding grooves, applied in the direction of grinding workpiece supports, grinding machines, manufacturing tools, etc., can solve the problems of increasing the manufacturing cost of processing tools, the inability to guarantee the roundness of the positioning holes, and the difficulty of adjusting the center height, so as to achieve later maintenance. The effect of low cost, improved grooving quality, and shortened manufacturing cycle

Active Publication Date: 2022-01-25
CHENGDU AIRCRAFT INDUSTRY GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the process of use, it was found that the center height adjustment of the bracket core was difficult, time-consuming and labor-intensive; the roundness of the aligned positioning holes could not be guaranteed, which caused the blade after slotting to deflect and scrape the positioning holes during the rotation process, and even the alloy material (brittleness) Large) The phenomenon of tooth chipping caused by the tool has a scrap rate of up to 20%; at the same time, it is extremely inconvenient to replace the bracket core of different specifications as a whole for different processing outer diameters; the other bracket core is worn out after processing about 5,000 pieces and cannot be used. Increased manufacturing cost of machining tools

Method used

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  • A positioning tool for CNC groove grinding machine
  • A positioning tool for CNC groove grinding machine
  • A positioning tool for CNC groove grinding machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The main structure of this embodiment, such as figure 2 , image 3 As shown, it includes a substrate 1 installed on a numerically controlled groove grinding machine and positioning cores 3 of different specifications. The specification of the positioning core 3 is determined by the diameter of the guide hole 4 provided inside the positioning core 3. The same diameter, the guide hole 4 in the positioning core 3 is installed with a bar 10 that needs to be processed into a tool, and the upper part of the positioning core 3 is to expose the cutting surface of the bar 10; The arc groove 2, the axis of the guide hole 4, the positioning core 3, and the arc groove 2 are all on the same straight line; the two sides of the base body 1 are also provided with at least one threaded hole passing through the arc groove 2, and the threaded hole Fastening screws 6 are installed on the internal thread, and the positioning core 3 is embedded in the arc groove 2 of the base 1 and fixed b...

Embodiment 2

[0031] In this embodiment, on the basis of the above embodiments, the structure of the positioning core 3 is further limited, such as figure 2 As shown, the outer wall of the positioning core 3 is also provided with a fixing groove 5 for fixing the fastening screw 6 . Adding a fixing groove 5 on the outer wall of the positioning core 3 is convenient for fixing the screw 6 through the threaded hole on the side of the base body 1, and can resist the positioning groove 5 on the outer wall of the positioning core 3 to better fix the positioning core 3. Other parts of this embodiment are the same as those of the foregoing embodiment, and will not be repeated here.

Embodiment 3

[0033] On the basis of the above-mentioned embodiments, this embodiment further limits the number of fastening screws 6 and the way the fastening screws 6 fix the positioning core 3, such as figure 2As shown, two fastening screws 6 are arranged in parallel on both sides of the base 1, and the two fastening screws 6 on the same side pass through the threaded holes of the base 1, and are snapped into the fixing grooves 5 of the outer wall of the positioning core 3 respectively. ends. In order to prevent the positioning core 3 from sliding back and forth, it is particularly preferred to set two fastening screws 6 on both sides, so that the fastening screws 6 can be pressed against the end of the positioning groove 5 on the outer wall of the positioning core 3 after passing through the threaded hole on the side of the base body 1. The fixing of the positioning core 3 is better realized. Other parts of this embodiment are the same as those of the foregoing embodiment, and will no...

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Abstract

The invention discloses a positioning tool for a numerically controlled groove grinding machine, which comprises a base installed on the numerically controlled groove grinding machine and positioning cores of different specifications. The outer diameter of the positioning core of the specification is the same, the guide hole in the positioning core is installed with a bar that needs to be processed into a tool, and the upper part of the positioning core is to expose the cutting surface of the bar; The axes of the hole, the positioning core and the arc groove are all on the same straight line; at least one threaded hole passing through the arc groove is arranged on both sides of the base body, and the inner thread of the threaded hole is equipped with a fastening screw, and the positioning core is embedded in the base body In the circular arc groove, and fixed by the fastening screws on both sides. The invention realizes automatic centering of cutting tools of different specifications through tooling guarantee, and has high centering guide precision, simple replacement, high yield rate, small wear in the processing process, and low maintenance cost in the later stage, and is suitable for wide popularization and application.

Description

technical field [0001] The invention relates to the technical field of mechanical processing, in particular to a positioning tool for a numerically controlled groove grinding machine. Background technique [0002] In the process of aircraft manufacturing and assembly, there are a large number of parts that require hole making. When machining such parts, drills and reamers are usually used to remove the allowance for the holes. Whether the manufacturing accuracy of the drill bit and reamer itself meets the requirements of use directly affects the physical quality of the processed product parts. At present, with the improvement of the precision requirements of parts, the performance requirements, dimensional accuracy and processing methods of the tools used to process parts are also continuously optimized and improved. [0003] For chip fluting (straight flute, spiral flute), an important process in tool machining, this machining process determines the geometry of the tool to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B24B19/02B24B41/06
CPCB24B19/02B24B41/06
Inventor 韩廷明田毅孙林
Owner CHENGDU AIRCRAFT INDUSTRY GROUP