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Friday, December 10, 2021

HLAA News: HLAA Position: Director of Strategic Communications

HLAA News: HLAA Position: Director of Strategic Communications

Link to Hearing Loss Association of America

HLAA Position: Director of Strategic Communications

Posted: 10 Dec 2021 01:01 PM PST

The Hearing Loss Association of America (HLAA) is the nation's leading nonprofit organization representing people with hearing loss. HLAA opens the world of communication to people with hearing loss...

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Tuesday, December 7, 2021

HLAA News: Listen to HLAA’s Barbara Kelley and a Former “Bachelor” Contestant on the “Hearing Health Today” Podcast

HLAA News: Listen to HLAA’s Barbara Kelley and a Former “Bachelor” Contestant on the “Hearing Health Today” Podcast

Link to Hearing Loss Association of America

Listen to HLAA’s Barbara Kelley and a Former “Bachelor” Contestant on the “Hearing Health Today” Podcast

Posted: 07 Dec 2021 09:55 AM PST

Carrie Johnson Director of Communications Hearing Loss Association of America By Carrie Johnson, Director of Communications, Hearing Loss Association of America The December 7 "Hearing Health Today"...

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Tuesday, November 23, 2021

HLAA News: U.S. House of Representatives Expands Medicare to Cover Hearing Aids

HLAA News: U.S. House of Representatives Expands Medicare to Cover Hearing Aids

Link to Hearing Loss Association of America

U.S. House of Representatives Expands Medicare to Cover Hearing Aids

Posted: 22 Nov 2021 02:32 PM PST

  HLAA is thrilled to announce that the U.S. House of Representatives passed the Build Back Better Act of 2021 (H.R. 5376) on November 19, 2021. The Build Back Better Act of 2021 includes the...

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Wednesday, November 17, 2021

HLAA News: CIICA CONVERSATION: The Impact of the Pandemic on Cochlear Implant Services

HLAA News: CIICA CONVERSATION: The Impact of the Pandemic on Cochlear Implant Services

Link to Hearing Loss Association of America

CIICA CONVERSATION: The Impact of the Pandemic on Cochlear Implant Services

Posted: 17 Nov 2021 09:30 AM PST

Sue Archbold, Ph.D. Coordinator for the Cochlear Implant International Community of Action (CIICA) Brian Lamb, OBE Coordinator for the Cochlear Implant International Community of Action (CIICA) By...

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Wednesday, November 10, 2021

HLAA News: Joan Kleinrock Leaves a Legacy of Support in HLAA Chapters

HLAA News: Joan Kleinrock Leaves a Legacy of Support in HLAA Chapters

Link to Hearing Loss Association of America

Joan Kleinrock Leaves a Legacy of Support in HLAA Chapters

Posted: 10 Nov 2021 12:57 PM PST

By Barbara Kelley, Executive Director, Hearing Loss Association of America Joan Carlucci Kleinrock, 86, passed away peacefully at Suburban Hospital in Bethesda, Maryland, on November 9, 2021, after...

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Tuesday, November 9, 2021

HLAA News: Joan Kleinrock Passed Away Today and Leaves a Legacy of Support in HLAA Chapters

HLAA News: Joan Kleinrock Passed Away Today and Leaves a Legacy of Support in HLAA Chapters

Link to Hearing Loss Association of America

Joan Kleinrock Passed Away Today and Leaves a Legacy of Support in HLAA Chapters

Posted: 09 Nov 2021 03:42 PM PST

Joan Kleinrock, 86, passed away peacefully at Suburban Hospital in Bethesda, Maryland, on November 9, 2021, after being admitted for pneumonia. Joan, along with Rocky Stone, built the HLAA Chapter...

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Thursday, November 4, 2021

HLAA News: Upcoming Chapter Development Workshop: HLAA Updates on Over-The-Counter Hearing Aids and More

HLAA News: Upcoming Chapter Development Workshop: HLAA Updates on Over-The-Counter Hearing Aids and More

Link to Hearing Loss Association of America

Upcoming Chapter Development Workshop: HLAA Updates on Over-The-Counter Hearing Aids and More

Posted: 04 Nov 2021 02:05 PM PDT

Date: Thursday, November 11, 2021 Time: 1 p.m. ET, Noon CT, 11 a.m. MT, 10 a.m. PT Duration: 60 minutes Topic: HLAA Updates on Over-the-Counter Hearing Aids and More Speakers: Barbara Kelley,...

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Thursday, October 28, 2021

HLAA News (in this message: 2 new items)

HLAA News (in this message: 2 new items)

Link to Hearing Loss Association of America

Lonely in the pandemic, HLAA Rochester Chapter member moves forward with a cochlear implant

Posted: 28 Oct 2021 01:30 PM PDT

Carrie Johnson Director of Communications Hearing Loss Association of America As pandemic lingers, treating hearing loss continues to prove important to enhance quality of life By Carrie Johnson,...

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Upcoming Chapter Development Workshop and HLAA Leaders Website Survey Reminder

Posted: 27 Oct 2021 12:32 PM PDT

Dear HLAA Leaders, Reminder: HLAA Leaders Website Survey Closes this Friday, October 29 HLAA is planning a new website launch slated for Summer 2022. We are looking for specific input from our HLAA...

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Wednesday, October 20, 2021

HLAA News: New Hearing Aid Options are Coming in 2022

HLAA News: New Hearing Aid Options are Coming in 2022

Link to Hearing Loss Association of America

New Hearing Aid Options are Coming in 2022

Posted: 20 Oct 2021 11:55 AM PDT

Barbara Kelley Executive Director Hearing Loss Association of America Kate Carr President Hearing Industries Association By Barbara Kelley, Executive Director, Hearing Loss Association of America and...

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Tuesday, October 19, 2021

HLAA News: FDA Releases Proposed Rules for Over-the-Counter Hearing Aids

HLAA News: FDA Releases Proposed Rules for Over-the-Counter Hearing Aids

Link to Hearing Loss Association of America

FDA Releases Proposed Rules for Over-the-Counter Hearing Aids

Posted: 19 Oct 2021 12:40 PM PDT

"HLAA is pleased to see the proposed rules on over-the-counter hearing aids released today by the FDA. This is one step closer to seeing OTC hearing devices on the market for adults with mild to...

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Friday, October 15, 2021

HLAA News: HLAA Website Survey for HLAA Leaders

HLAA News: HLAA Website Survey for HLAA Leaders

Link to Hearing Loss Association of America

HLAA Website Survey for HLAA Leaders

Posted: 15 Oct 2021 07:56 AM PDT

Dear HLAA Leaders, HLAA is planning a new website launch slated for Summer 2022. We are looking for specific input from our HLAA leaders to help make this website better and more effective for people...

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Wednesday, October 13, 2021

HLAA News: HLAA Receives Award from the TSA Recognizing Consumer Advocacy Partnership

HLAA News: HLAA Receives Award from the TSA Recognizing Consumer Advocacy Partnership

Link to Hearing Loss Association of America

HLAA Receives Award from the TSA Recognizing Consumer Advocacy Partnership

Posted: 13 Oct 2021 10:07 AM PDT

Lise Hamlin Director of Public Policy Hearing Loss Association of America On September 19, HLAA received the good news that the Transportation Security Administration (TSA) was presenting its annual...

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Tuesday, October 12, 2021

HLAA News: Public Policy Assistant

HLAA News: Public Policy Assistant

Link to Hearing Loss Association of America

Public Policy Assistant

Posted: 12 Oct 2021 01:01 PM PDT

The Hearing Loss Association of America (HLAA) is the nation's leading nonprofit organization representing people with hearing loss. HLAA opens the world of communication to people with hearing loss...

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Friday, October 1, 2021

HLAA News: Have you seen the latest Hearing Life E-News?

HLAA News: Have you seen the latest Hearing Life E-News?

Link to Hearing Loss Association of America

Have you seen the latest Hearing Life E-News?

Posted: 01 Oct 2021 09:51 AM PDT

Dear HLAA Leaders and Community, Have you seen the latest Hearing Life e-News? Sign up to have Hearing Life e-News delivered to your inbox twice per month. Hearing Life e-News keeps readers and HLAA...

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Wednesday, September 29, 2021

HLAA News (in this message: 2 new items)

HLAA News (in this message: 2 new items)

Link to Hearing Loss Association of America

HLAA Position: Database Coordinator

Posted: 29 Sep 2021 01:38 PM PDT

The Hearing Loss Association of America (HLAA) is the nation's leading nonprofit organization representing people with hearing loss. HLAA opens the world of communication to people with hearing loss...

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HLAA Position: Digital Communications Associate

Posted: 29 Sep 2021 01:23 PM PDT

The Hearing Loss Association of America (HLAA) is the nation's leading nonprofit organization representing people with hearing loss. HLAA opens the world of communication to people with hearing loss...

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Friday, September 17, 2021

HLAA News: Welcome Back, HLAA Chapters and State Organizations!

HLAA News: Welcome Back, HLAA Chapters and State Organizations!

Link to Hearing Loss Association of America

Welcome Back, HLAA Chapters and State Organizations!

Posted: 17 Sep 2021 11:07 AM PDT

Dear Chapter and State Leaders, Welcome back to a brand new season! There is lots of exciting activity in the HLAA Community. HLAA Chapters and State organizations continue to be resilient,...

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Dongguan's plastic mold industry introduces 3D printing technology on a large scale

As an emerging technology, 3D printing has become a powerful tool for linking intelligent manufacturing. A few days ago, the Dongguan Municipal Bureau of Economy and Information Technology and the Dongguan Electronic Information Industry Association jointly organized a smart talent training event. At the event site, Dongguan Plastic Mould Company News released an industrial-grade 3D printer to serve Dongguan plastic mould enterprises.

 

Improve cooling efficiency and shorten casting cycle

 

"By analyzing the hot spots of the mold map provided by the customer, after finding the corresponding area that inhibits the mold cooling efficiency, the conformal waterway scheme is designed. After the customer confirms the design scheme, the layered software and production machine are imported. It is ready to 3D print plastic molds. This is the practical process of mass production of molds using 3D printing technology.

 

Compared with traditional production, the model efficiency and yield rate of using 3D printing technology to die machining are higher. Because the production of molds needs to be in special environments such as high temperatures, this has led to the phenomenon of uneven heating and high defect rates in traditional processing modes; now 3D printing technology is applied, and mold production can be evenly heated in all positions , Which directly improves the yield of products.

 

It is worth noting that the application of 3D printing technology can also shorten the cycle of mold molding. According to the traditional production model, only 100 molds can be produced in one hour; with 3D printing technology, the number of molds produced in one hour can reach as many as 1,000.

 

Using 3D printing technology, a 3D conformal waterway can be made inside the mold, which greatly improves the cooling efficiency and shortens the titanium investment casting cycle, which not only saves costs, but also improves the quality of products and enhances the competitiveness of enterprises. At present, this technology has been widely used in the stand casting mold industry in Europe, America and Japan.

 

According to the person in charge of the company, the customer requires a plastic machining cycle of 25s. Because the temperature of the PC material is relatively high, the cooling water path must be sufficient and uniform. 3D printing technology can perfectly solve this problem.

 

3D printing technology has a promising future

 

With the continuous development of 3D printing technology, it has been widely used in industrial vertical fields, so industrial applications will be the largest component of the cheap 3D printing market share.

 

As an international manufacturing city, Dongguan is driven by the continuous and rapid development of IT industry, precision machinery and other industries, and a number of hardware mold companies have emerged. Chang'an, Hengli and other places have also become important towns in the hardware mold industry in Dongguan. Relevant statistics show that every 100 million yuan in the mold industry can drive the development of about 10 billion yuan in related industries.

 

The combination of molds and 3D printing plans will have unexpected chemical reactions. One is an indispensable tool in modern industry, and the other is high-tech. The integration of the two will bring a qualitative leap for Dongguan's industry.

 

Dongguan is the main gathering place for the mold industry. Since the beginning of this year, more and more companies have started to launch 3D printing equipment. If 3D printing equipment is applied on a large scale in the future, it will subvert the production mode of Dongguan mold industry.

Copy right notice: This article comes from: https://cncmilling.ltd/

 


Tuesday, September 14, 2021

HLAA News: Join Me When the Stars Come out on September 23

HLAA News: Join Me When the Stars Come out on September 23

Link to Hearing Loss Association of America

Join Me When the Stars Come out on September 23

Posted: 14 Sep 2021 10:01 AM PDT

Barbara Kelley Executive Director Hearing Loss Association of America. Follow Barbara on Twitter: @BKelley_HLAA "Stargazing is a free, constantly changing show that allows for great conversation and...

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Tuesday, September 7, 2021

HLAA News: How to View Award-Winning Hearing Loss Documentary “We Hear You”

HLAA News: How to View Award-Winning Hearing Loss Documentary “We Hear You”

Link to Hearing Loss Association of America

How to View Award-Winning Hearing Loss Documentary “We Hear You”

Posted: 07 Sep 2021 10:08 AM PDT

Carrie Johnson Director of Communications Hearing Loss Association of America Lights . . . camera . . . action! HLAA is hosting an exclusive "We Hear You" Zoom Event featuring a Talkback with the...

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Tuesday, August 31, 2021

HLAA News: Missing Lily

HLAA News: Missing Lily

Link to Hearing Loss Association of America

Missing Lily

Posted: 31 Aug 2021 09:28 AM PDT

Kevin H. Franck, Ph.D Chair of the HLAA Board of Directors. I had a dog named Lily – a cockapoo (though in Australia they'd call her a spoodle). She passed away recently. Like many of you who have...

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Speed ​​regulation method of CNC lathe machining spindle

In order to meet the requirements of the main drive of CNC lathe processing, CNC machine tools (attribute: automated machine tools) often use a motor stepless speed regulation system. The method of combining multi-level speed regulation realizes spindle speed regulation. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology. It generally refers to the process of processing parts on CNC machine tools. In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining, a series of advanced CNC Swiss machining technologies have been developed and used in the aerospace industry.

 

1. Mechanical gear shift

 

In the main transmission system of CNC lathe processing, the traditional spindle box structure is greatly simplified due to the stepless speed regulation of the electric motor. However, due to the limitation of the spindle motor and the driving power supply, the output of constant torque is often in its low speed range. In order to enable the spindle to provide the maximum output power of the main motor within the entire speed range as much as possible, and to meet the needs of CNC machine tools (attributes: automated machine tools) for low-speed and powerful cutting, a combination of 1 to 4 gear speeds and stepless speed regulation is often used The method is the so-called stepless speed regulation in sections. The use of mechanical gearbox housing gear deceleration not only amplifies the output power, but also expands the range of speed regulation.

 

When CNC lathe processing is cutting, the spindle runs automotive parts at the speed specified by the S command in the part processing program. Therefore, there must be two types of spindle speed command signals in the numerical control system, that is, analog (definition: virtual of real things or processes) or digital signal S code to control the drive speed regulation circuit of the spindle motor, and at the same time use the switch signal (M code) to control the actuator of mechanical gear shifting and automatic shifting. The automatic shifting actuator is an electric-mechanical conversion device, commonly used hydraulic shift forks and electromagnetic clutches.

 

2. Motor speed regulation

 

The speed-regulating motors used for the spindle drive of CNC lathes are mainly divided into two categories: DC and AC.

 

(1) DC motor speed regulation-usually Axis CNC tools have a large speed regulation range, and the DC motor speed regulation adopts both voltage regulation and magnetic regulation. The characteristic curve of its typical DC spindle motor is shown in Figure 61. It can be seen from its characteristic curve that the motor below the speed n0 belongs to constant torque speed regulation, that is, it is realized by changing the armature voltage; above the speed n0, it belongs to the constant power (referring to the work done by the object in a unit of time). How much) Speed ​​regulation is achieved by changing the excitation current.

 

The more commonly used FANUC DC-excited spindle motor uses a three-phase fully-controlled thyristor (zhá) tube non-circulating current reversible speed regulation system, which can realize voltage and magnetic speed regulation, and the speed range is 35. ?~3500r/min. CNC electronics machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough stainless steel machining and idle stroke.

 

(2) AC motor speed regulation

 

At present, cage induction motors are used in AC main shaft drives of CNC machine tools, and vector control frequency conversion speed regulation methods are widely used.

With the improvement of new DC and AC spindle speed control motors, motor speed control will be widely used. However, in order to reduce costs in economical CNC machine tool steel

 (attributes: automated machine tools), mechanical gear shifting methods are often used. Change the spindle speed. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology. It generally refers to the process of processing Iron parts on CNC machine tools. In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC steel machining, a series of advanced CNC machining technologies have been developed and used in the aerospace industry.

 

Copyright notice: This article comes from https://www.cncmanufacturing.cn/

 

 


Advantages of CNC machine tool processing

CNC machine tool (attribute: automatic machine tool) processing is a high-precision, high-efficiency automatic machine tool. The use of CNC machine tool processing can improve processing efficiency, create more value, and get rid of the backward processing technology. The processing technology of ordinary lathes is similar. What are the advantages of CNC machining?

 

1. High productivity

 

CNC machine tools can effectively reduce the processing time and auxiliary time of the parts. The spindle speed and feed range of the CNC coffee machine parts tools are large, allowing the machine tools to carry out powerful cutting with large amounts of cutting, the rapid movement and positioning of the moving parts of the CNC machine tools and high-speed cutting processing. , It reduces the turnaround time between processes of semi-finished products and improves production efficiency.

 

2. High processing accuracy

 

The machining accuracy (precision) of CNC machine tools can generally reach 0.0050.1mm. CNC machine tools are controlled in the form of digital signals. Each time the CNC device outputs a pulse signal, the moving parts of the machine tool move by one pulse equivalent (generally 0.001mm) , And the average error of the backlash of the machine tool's feed drive chain and the lead screw pitch can be compensated by the numerical control device. Therefore, the numerical control machine tool has a relatively high positioning accuracy. CNC machining CNC is also called computer gong, CNCCH or numerical control machine tool. It is actually a kind of name in Hong Kong, which greatly reduces the number of tooling. CNC machining parts with complex shapes does not require complex tooling. CNC machining is a new type of processing technology, the main work It is to compile the processing program, that is, to convert the original manual work to computer programming. If you want to change the shape and size of the part, you only need to modify the part processing program, which is suitable for new product development and modification.

 

3. Highly flexible

To ensure the surface accuracy (accuracy) of the workpiece, it mainly depends on the processing procedure. It is different from the ordinary machine tool. There is no need to manufacture and replace many tools and fixtures, and there is no need to adjust the machine tool frequently. CNC machining General CNC iot machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining boring and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. Therefore,  Stainlesss teel parts tools are suitable for occasions where parts are frequently replaced. That is, it is suitable for single piece, small batch production and the development of new products, shortens the production preparation cycle, and saves a lot of process equipment costs.

 

4. The processing quality is stable and reliable

 

To process the same batch of parts, on the same machine tool, under the same processing conditions, using the same tool and processing procedure, the cutting path of the tool is exactly the same, the consistency of the masks machine parts is good, and the quality is stable (explanation: stable and stable; no change).

 

5. Conducive to modernization of production management

 

CNC machine tools (attributes: automated machine tools) can accurately estimate the other processing time in advance, and the tools and fixtures used can be standardized and modernized. Numerical control machine tools use digital signals and standard codes as control information, which is easy to realize the standardization of processing information. At present, it has been organically combined with computer-aided design and manufacturing (CAD/CAM), which is the basis of modern integrated manufacturing technology.

 

6. Improve working conditions

 

After the CNC machine tool (attribute: automatic machine tool) is adjusted before processing, enter the program and start it, and the machine tool can automatically and continuously process until the end of the processing. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and letters, and the processing required by the processing technology. It generally refers to the process of machinery parts on CNC machine tools.

 

In order to improve the degree of production automation, shorten the programming time and reduce the cost of CNC machining, a series of advanced CNC machining technologies have been developed and used in the aerospace industry. Operators are mainly engaged in program input, editing, loading and unloading of masks-machine-parts, tool preparation, observation of aluminum machining status, and parts inspection. The labor intensity is greatly reduced, and the labor of machine tool operators tends to be intellectual work. In addition, the machine tool is generally closed processing, which is clean and safe.

 

Copyright notice: This article comes from https://3d-printing-china.com/