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

Pencil sharpener spiral hobbing cutter cold drawing production process method and mold

A spiral hob and production process technology, applied in forming tools, manufacturing tools, metal processing equipment, etc., can solve problems such as poor precision and complicated production process of spiral hob cold extrusion, and achieve improved precision and improved pencil sharpening life , good effect

Inactive Publication Date: 2017-08-18
刘竹青
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem that the spiral hob cold extrusion production process of the prior art pencil sharpener is complicated and the precision is poor, and a kind of spiral hob cold stretch production process and mold thereof for a pencil sharpener are provided, with Solve the deficiencies of existing technology

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
  • Pencil sharpener spiral hobbing cutter cold drawing production process method and mold
  • Pencil sharpener spiral hobbing cutter cold drawing production process method and mold

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The cold-stretching production process of the spiral hob of the pencil sharpener and its mold adopt the following processing flow:

[0023] 1. Raw material drawing: draw the raw material into standard roundness;

[0024] 2. Cold heading processing: processing the drawn raw material into a single product with holes;

[0025] 3. Spheroidizing annealing: reduce the hardness of a single product with holes through spheroidizing annealing;

[0026] 4. Centerless grinding machine processing: grinding off the oxide skin on the surface of the spheroidized annealed product;

[0027] 5. Phosphorus saponification treatment: Phosphorus saponification on the surface of the product processed by centerless grinding, increasing surface lubrication and reducing friction with the mold;

[0028] 6. Cold stretch processing: process the saponified product into a spiral hob 9 with a pre-made mold.

Embodiment 2

[0030] Production of cold drawing dies:

[0031] The raw materials are made of alloy materials, which are processed by spiral mirror pulses with pre-made electrodes, and then manually trimmed and polished at the feed port, and are matched at a high temperature of 800 degrees.

[0032] At present, ordinary machining cannot achieve a rake angle of more than 15 degrees, and only five-axis fine carving can be processed. However, considering that the cost of five-axis fine carving is very high, we use the five-axis fine carving process for electrode processing, and then process it well. The electrode is processed into a stretch forming mold by mirror spiral pulse, and the mold is polished and polished to form a good shape.

[0033] according to figure 1 , the mold structure includes an upper gland 1 and a lower base 7; a punch 2 and an inner hole core pulling 3 are arranged below the upper gland; a mold pad 6 is provided on the lower base; A molding die 5 is arranged on the upper...

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

The invention belongs to the technical field of study tool production processes, and discloses a pencil sharpener spiral hobbing cutter cold drawing production process method and mold. A product adopts the following machining processes of 1, raw material wire drawing, 2, cold heading machining, 3, spheroidizing annealing, 4, centerless grinding machine machining, 5, phosphorus saponification treatment and 6, cold drawing machining. Compared with an existing pencil sharpener spiral hobbing cutter cold extrusion production process, the method and mold are simplified better, precision is improved, cost is reduced, and quality is improved; and a hollow cold drawing technology is adopted, drilling and hole turning are omitted, and the inner hole precision is high. The front angle can reach 16 degrees to 32 degrees, the pencil sharpening and cutting effect is good, cutting force is small, and the pencil sharpening service life of the product is prolonged by one time.

Description

technical field [0001] The invention belongs to the technical field of production technology of learning utensils, and in particular relates to a production process method of cold stretching of a spiral hob for a pencil sharpener and a mold thereof. Background technique [0002] The pencil sharpener is mainly used to sharpen pencils, and the internal spiral hob is the main component for cutting pencils, so the wear resistance and precision of the spiral hob are required to be high. [0003] At present, the production process of the spiral hob of the pencil sharpener mainly includes four processing technologies: hobbing machine processing, thread rolling machine processing, cold extrusion processing, and tooth milling processing. The finishing process in the press production process is more complicated. For example: 6.2mm drilling and 7mm turning are time-consuming, labor-intensive, and material-intensive. It is difficult to control the machining accuracy, and the above four ...

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
IPC IPC(8): B21D22/26B21D37/10B21D37/20
CPCB21D22/201B21D22/208B21D22/26B21D37/10B21D37/20
Inventor 刘竹青
Owner 刘竹青
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