How Does 5-axis CNC MILLING WORK?
CNC milling is complex machining technique which utilizes several types of pre-programmed CAM and CNC controls to build customized components or parts. We are professional custom CNC milling company and 5 Axis CNC Milling Service provider in China, we offer the manufacturing of precision machined parts and solutions at affordable rates to meet the growing demands of the clients across the world.
Cnc Milling,Cnc Milling Machine,Desktop Cnc Mill,Small Cnc Mill Ningbo Rongna Technology Co.,Ltd , https://www.prototyping-products.com
Recently, according to reports from domestic media, Tianjin Fisheries Market has discovered a "rubber injection". This kind of shrimp is a frozen shrimp "injection glue" in order to make the shrimp head look full and press the scale, and the "gel-injected shrimp" has quickly become a focus topic in the field of food safety.
Recently, the name “Glue-injected shrimp†has made people who like to eat seafood have tightened their nerves.
The public is most concerned about the injected gelatinous substances in the shrimp. When non-edible substances such as industrial gelatin are injected into the shrimp, they may cause great harm to the human body.
In the past few days, a survey by the reporter found that a number of quality inspection agencies in China had no detection method for the industrial non-edible substances that may be added in foods, so that the detection of “gel-injected shrimps†fell into blind spots. Food safety experts said that they should support third-party testing agencies and rely on competition to improve detection technology and seek breakthroughs.
Aquatic products wholesalers suffer trouble for shrimp inspection Liu Da (a pseudonym) is engaged in aquatic product wholesale business in Shenyang and is responsible for the supply of Shenyang supermarkets and hotels. Recently, Liu Da was stirred up by the Tianjin market to inject “rubber glueâ€. Get a headache.
"There are two supermarkets and I want to freeze the quality inspection of the prawns prove that the prawns are not plastic injection shrimp, there is no industrial gelatin." Liu said that after the "rubber injection shrimp" was exposed, some retailers are afraid of complaints, Suppliers are required to perform inspections on prawn and focus on the detection of industrial gelatin in shrimp.
Liu Da said that this was not too much of a problem, but after consulting several quality inspection agencies one after another, he repeatedly “hit the wall†and the answers were “Industrial gelatin is a non-edible substance and there is currently no detection methodâ€.
However, retailers said that due to Liu Da can not provide relevant quality inspection report, in the near future, will reduce the amount of purchase of frozen prawn, wait for the "rubber shrimp" clear state of affairs, and then resume normal procurement.
Industrial gelatin encountered "not detected". Why did small "rubbed shrimp" encounter detection without a door?
In the past few days, the reporter has successively contacted numerous national authoritative quality inspection agencies, including the National Food Quality Supervision and Inspection Center, the National Aquatic Products Quality Supervision and Inspection Center, and the China Center for Disease Control and Prevention, National Institute of Nutrition and Food Safety. The quality inspection agencies stated clearly that at present, There is indeed no test method for the possible composition of industrial gelatin in food and aquatic products.
"Without the detection method and standard as the basis, we can't indiscriminately detect it. The measured result is not accurate," said the person in charge of the National Aquatic Products Quality Supervision and Inspection Center.
In addition, relevant persons from the Quality Supervision and Inspection Institute of Liaoning Province and the Quality Inspection Department of the Shenyang City Product Quality Supervision and Inspection Institute also indicated that they could not be tested.
A professional person in charge of food inspection at a quality inspection agency stated that the national authorities must have a research process on the detection methods of non-edible substances. For example, for the detection of melamine in milk powder, the relevant authorities of the State have come up with detection methods and related standards. A quality inspection agency can use this as a legal basis to test related products and issue a quality inspection report with legal validity to the client.
According to food inspection professionals from domestic quality inspection agencies, at present, from a technical and professional point of view, some non-edible substances can be completely detected through quality inspection equipment, such as: After crushing gelatin, using technological equipment, through the use of heavy metals and microorganisms The analysis can determine whether it is industrial gelatin.
However, the above sources stated that because the country does not have a clear test method, quality inspection agencies have no legal basis for sample testing and cannot produce a formal inspection report. Therefore, most quality inspection agencies are not willing to “liveâ€.
In addition, the person in charge of a food inspection center of a quality inspection agency in China bluntly stated that because industrial raw materials will cause damage to food testing equipment, most quality inspection agencies are reluctant to detect non-edible substances at the risk of damaging the machine.
“The non-edible substances are mostly industrial raw materials and are tested with a million-dollar equipment. As a result, the machine may have also been destroyed.â€
The person in charge mentioned the "hardships" of the quality inspection department.
25 kinds of non-food substances without detection method
In fact, the food safety risks and testing problems that may occur in foods that may be illegally added to non-edible substances have attracted the attention of the relevant state departments.
On April 22 last year, the Ministry of Health issued the “List of Food Additives That May Be Infringed by Non-edible Substances and Food Additives That May Be Misused,†along with the corresponding test methods.
However, the reporter found that in this “black listâ€, of the 47 non-edible substances that may have been illegally added, 25 were blank or “none†in the test method column.
In response, the Ministry of Health responded that at present, individual illegal additives that have been included in the “blacklist†need to further improve detection methods, and the Ministry of Health will further develop convenient, rapid, and accurate detection methods.
Trench Oil Testing Has Still No Breakthrough
The gutter oil faced the same detection dilemma before the “rubber injection shrimp†encountered detection.
Regarding the public’s attention to waste oil, the Ministry of Health has twice solicited societal oil testing methods from the society. However, due to the lack of specificity of most detection methods, it cannot be the main method.
This means that after a period of focused research, there has been little progress in technical breakthroughs in the detection of waste oil, and new results will take time to be realized.
According to Nong Shaozhuang, a domestic food safety expert, in the past two years, with the public's attention to food safety issues, relevant departments have revised food testing methods and standards. However, there are still many defects in the above-mentioned links. Non-edible substances detected.
In fact, there is no detection method for non-edible substances quality inspection agencies, but there is no standard detection method, because only the standard test methods have legal basis.
70,000 yuan detector has sold more than 100 Taiwan should support third-party testing agencies
The inspection methods for non-edible substances such as cooking oil have not been introduced yet, but individual companies have seized business opportunities from it.
Yesterday, the reporter contacted a domestic scientific instrument manufacturer as a customer. The head of the company’s sales department boasted to reporters the function of the testing equipment. “The non-edible substances that cannot be detected by the quality inspection agency can be measured by most of our equipment. ."
According to its disclosure, non-edible material detectors (within 20 items of testing items) sell for about 70,000 yuan each, and the instrument will automatically display the sample types and test results of each item and show whether it is a qualified product. The customers who buy detectors in peacetime are mainly enterprises. At present, more than 100 units of these instruments have been sold.
According to the above-mentioned person in charge, instrument development personnel mainly rely on scientific research literature, and through experimental methods, find out some simple and feasible detection methods. However, the test results are for reference only.
In the opinion of Nong Shaozhuang, instead of allowing some private enterprises to secretly sell testing equipment, it is better to support private third-party inspection agencies other than quality inspection agencies in some countries, so that food testing agencies can continuously improve their service capabilities under the pressure of market competition. And detection technology, the supervision department can focus on the construction of the system, standards, and put more effort to strengthen the food production process and the source of supervision.
The foreign-investment testing agency said that the trench detection method will soon be released
In recent years, each time a major food safety incident broke out, independent third-party testing organizations “harvested†an opportunity for business growth.
The reporter learned that at present, foreign third-party quality inspection agencies such as Intertek in the UK, SGS in Switzerland, and TUV in Germany have all made their presence in China. They have opened branch offices and snatched the cakes in the food testing market.
According to a person in charge of a food inspection center of a foreign-invested inspection agency, after the “plasticizer†food safety incident broke out in May last year, the aforementioned quality inspection agency took the lead in launching a plasticizer testing project. For a time, many food companies came to apply for inspections. There are even companies that are willing to pay two or three times the cost of testing for “exergencyâ€. At present, the quality inspection agency is studying the testing methods for waste oil, and it is estimated that it will soon be released.
The person in charge stated bluntly that the quality inspection agencies affiliated with the government departments are often subject to compulsory inspections, while the third party testing agencies are relatively random, and the testing items can be selected according to customer requirements and recent food safety hot topics, and a quality inspection report issued. The time can also be "urgent".
Detection industry or become a new hot spot in the market Liaoning has talent advantages
In fact, the country has already started to plan for a better tomorrow for testing and testing such high-tech service industries.
A few days ago, the State Council issued a document focusing on supporting eight major high-tech service industries, among which the inspection and inspection industry is among them. According to industry forecasts, the related fields of high-tech service industry are expected to follow the cultural industry and are a new area where the market will repeatedly pay attention and excavate.
According to Fang Tianxuan, director of the Liaoning Provincial Institute of Industrial Economics, at present, there are many universities and research institutes in our province engaged in food-related research, among which there is no lack of talents with strong technical strength, and a testing market based on private capital is cultivated. Liaoning has more advantages in technology and talent than other regions. Relevant departments should seize the opportunity to actively cultivate third-party testing agencies.
Milling is the process of cutting and drilling material using a rotating cylindrical tool. This tool is held in a spindle and comes in a variety of sizes and forms. With 5-axis machining, there have two extra rotary axes defined by A, which rotates around the X axis, B, which rotates around the Y axis, and C, which rotates around the Z axis. The combination of additional axes depends on the machine and comes in variations, including AB, AC, or BC.
With 5-axis machining, the table or cutting tool can be tilted, creating the ability to avoid collision with the tool holder and allowing for better access to part geometry. This also ensures improved tool life and cycle time as it helps maintain cutting position and constant chip load. This type of machining offers a push toward single-setup machining, creating shorter lead times and increasing efficiency.
"Grip rubber shrimp" trapped in the situation: no authority inspection department can detect
State authorities have said more authoritative testing can not detect 47 kinds of non-food substances released by the Ministry of Health of industrial gelatin in 25 kinds of detection methods <br> <br> No news background