What Is a Lumberjack?

A lumberjack is the first worker in a forest harvesting operation. Responsible for logging is also known as tree felling and tree placement. Generally, in the designated cutting area, first determine the direction of felling, clear the surrounding obstacles (shrubs, weeds, snow, etc.), open a safe road, and then fell the professional workers.

refers to the workers who build the wooden structure of the house and make wood, also known as carpenter.

refers to the ancient official name.

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It is said that in the ancient times, houses were built. On the day when the houses are built, they must be called "woodworking" to eliminate evil! When the evil was under control, the carpenter took out a unique tool and stood on the ridge of the roof, shouting good luck, in order to ensure future prosperity and prosperity.

Woodworking has a long history, because it was considered a low-level occupation at that time, so nobles did not learn the art of woodworking. However, there are exceptions. For example, the late Ming emperor Xi Zongzhu Youyou was called "carpenter emperor" because he loved woodworking.

Lu Ban was a well-known skillful woodworker. Under his experience, China became a country with a relatively developed wood industry at that time.

In Hong Kong, most secondary schools have woodworking or metalworking courses in junior high schools, and some technical schools have also had woodworking courses in high school and middle school exams.

Woodworking is widely spread in Europe and the United States. Unlike China, Europeans and Americans regard woodworking as a work that can be done by first-class and inferior people. Carpentry is offered in many private schools in Europe and the United States.

In today's society, the profession of "woodworking" is widely used. Such as housing construction, shipbuilding, landscaping, and the most common areas of decoration.

Carpentry was a very important handicraft industry in ancient society. It was inseparable from the manufacture of vehicles, vehicles and other means of transport, agricultural handicraft production tools, building houses and living utensils. "Zhou Li Kao Gong Ji" said: "Everyone who attacks the wood is seven. The wood attackers are: wheels, wheels, bows, houses, craftsmen, cars, and zi." Wheels are wheels and related parts; The woodworker is called the wheeler, and the officer who controls the wheel is also called the wheeler. "A round is a man-made round, and it takes time to cut three materials" . Yu, that is, car, sedan; Yuren, generally refers to car builders. Bow, this refers to the workers who make the bow. Lu, this refers to the workers who make spears, weapons, and halberds. Carpenter, this refers to the worker in charge of the construction of Miyamuro Castle. Car

Warring States Policy Wei Zeyi.

"Story of the Garden and Fingers".

"Han Feizi and He Shi".

"Lü's Spring and Autumn · Guizu".

Carpentry tools. Zi, this refers to the carpenter who made the shelf of the musical instruments such as Zhong Mang, drinker, and target.

During the Spring and Autumn and Warring States Periods, due to the gradual popularization of ironware, iron-made wooden tools were widely used in production. These tools mainly include: jin (axe), saw, cone, chisel, drill, hoe (chisel or axe), hoe and so on. There are also rules. The so-called gauge is a tool for drawing circles. The so-called moment is a square ruler for drawing square or right angles. "Xunzi · Mingu" said: "The moment of five inches, the world can also be painted." Rope, the ink rope for straight lines. Overhang, measure overhang for vertical line. Water, tool for measuring horizontal lines .

At this time, he also invented a tool called " " or "" to correct wood straightness.

The method is to place the wood in a simmer after cooking, and then straighten or straighten the bentwood for a certain period of time to suit the needs of the production and prevent future deformation. "Xunzi · Sexual Evil" says "The birth of the old man is a kiwi. The origin of the rope ink is not straight. The kiwi must be rectified and then straight." Mom, the same as "hook"; Lime is bentwood. "Xunzi · Overseas" said: "Take the wheel of the public, the wood of Taishan also, show (set) Zhu Zhu, March and May. Luan is not the usual."

In woodworking production, each process and each part uses proprietary tools and follows certain operating procedures. "Mozi · Facial Essays" says: "People in the world must not be able to measure (degrees). Although there are also practitioners in the 100 workers, there are laws for the 100 workers. Rope is hanging, no clever workers, no clever workers, all use these five as the law. The clever ones can be one of them, although the unfortunate ones can't be, they can rely on it to engage in it. "Xunzi Confucian Effect Chapter" also said: "Set rules, Chen Shengmo, then use, gentlemen are inferior to workers.

The craftsmanship of woodworking in the Spring and Autumn Period and the Warring States Period has reached a very high level, and the famous public transport class is its outstanding representative. "Mo Zi Lu Wen Pian" contains: The male loser traveled to Lu from the south of Lu, and Lu (Nai) began to be a vessel of war, as a preparation for rejection. Those who retire are hooked, those who advance are rejected, and those who are repelled are measured as soldiers. The male loser cut the bamboo and thought it was a cricket, and it flew away for three days. The male loser thought it was a coincidence. Zi Mozi said that the official loser said: "The son of a son is also a prince. It is worse than a carpenter to be under the jurisdiction of a car. It must be three inches of wood, and he weighs fifty stones. Therefore, the work done is conducive to the goodness of others, and it is not good People are awkward. "

The public loss class here is Lu people, so it is also called Lu Ban. It is a well-known woodworker in the early Warring States Period. He has superb craftsmanship. The earliest simulated aircraft or glider. Because of his amazing carpentry skills, he was later revered as the originator of carpenters.

Spreading in Europe and America : Woodworking is widely spread in Europe and America. Unlike China, woodworking is a course in many European and American private schools.

There are two types of logging methods: manual and mechanical. When logging by hand saw or chainsaw, first cut two parallel or triangular cutting edges at the root on the side of the trunk felling direction (see the logging method), that is, the lower cutting edge. The opening angle is generally 30 ° to 35 °, and the depth is generally 1/5 to 1/3 of the trunk diameter. Then use an axe or a saw to pick out the wood piece between the two sawing mouths (called a draw piece). You can also use a saw to cut a horizontal cutting edge at the root of a standing tree, and then use an ax to cut a bevel (called a cutting edge). After the lower sawn is completed, a sawn is called perpendicular to the trunk axis on the opposite side of the tree down direction, which is called the upper sawn. Its height is generally 1/10 of the diameter of the standing wood from the bottom surface of the lower cutting edge, but the place to be sawed should be 70 to 80% of the opening height of the lower cutting edge. Too high or too low will make the surface of the lower cutting edge uneven. When sawing the cutting edge, add a wedge while sawing to prevent pinching the saw; at the same time, leave a string of a certain width between the upper and lower cutting edges (called a chord) to slow down the tree falling speed. In order to facilitate the gathering, to prevent damage to the mother and young trees, to ensure the safety of operations and control the direction of tree fall is extremely important. When using axe or saw to cut down, the measures to control the tree's inversion direction are as follows: Leave triangular or trapezoidal strings, the two ends of the strings have different widths, and the narrow ends are broken first, so that the standing tree is twisted toward the wide end of the strings and turned to the predetermined direction; Drive the wedge, drive into the steel wedge or use a hydraulic wedge on the back of the scheduled reverse direction; support rod, use the support rod to push the trunk along the selected backward direction.

The logging tools are mainly axe, hand saw, chainsaw and self-propelled feller, etc.

In the 21st century, especially in the past ten years, China's woodworking machinery industry has achieved rapid development. Since it passed Italy in 201 1, China's woodworking machinery industry's GDP in 2013 has surpassed Germany. Driven by these amazing results, China has become the largest producer of woodworking machinery, and China's exports of woodworking machinery have finally surpassed imports. The domestic woodworking machinery has formed a complete product system and industrial chain. With the development of China's woodworking machinery, the development of China's woodworking machinery products, the level of China's integrated wood processing equipment has increased the fastest, and has reached the international advanced level to achieve integrated wood equipment. Full automation is the research and development direction that enterprises should focus on, and the key to improving integrated production. As a result, our country has reached the world's leading level in the processing of laminated wood, and our country's integrated industry has undergone rapid changes.

Direction of development

Chinese woodworking machinery manufacturing enterprises want to go global and dominate the world, this goal should be implemented from the beginning. Therefore, China must attach importance to the development of technology. China lacks technology-based enterprises. Therefore, the development potential of our country is obviously insufficient. Therefore, China's future goals must be aligned with the technology and increase efforts to develop its own new technologies. In the future, there will be even more magnificent progress. By taking this step, China will win the opportunity. Otherwise, you will never win other international companies.

Development direction of digital control material equipment

Numerical control technology is an important step for China to develop into a technological country. The introduction of numerical control technology into woodworking machinery has enabled woodworking machinery to achieve self-integration, which is more efficient and accurate in the work of woodworking machinery. Automation of woodworking machinery is an advanced technology that the industry needs to develop urgently. Automation is an eternal theme for the development of woodworking machinery, and it is the continuation and end goal of NC technology. Automation is a concentrated manifestation of a country's industrialization level. The automation of China's furniture industry, wood product processing industry, and wood-based panel industry depends on the woodworking machinery industry. Therefore, only the real automation of CNC woodworking machinery technology is the goal and development that China needs to achieve. direction.

Development direction of CNC processing equipment for wood products and furniture

Wood products and furniture make China a major development specialty. Because China has a large number of logs, it requires advanced wood-making technology. With the development of new technologies, China's log processing equipment is gradually in line with the international advanced level, but still There is a big gap with the world's top advanced technology. Therefore, China's wood-making technology still needs to develop to a higher level. Not only is it in line with international technology, we should have the confidence to surpass other countries and let me pass. Woodworking technology takes it to the next level.

Development direction of NC for wood drying technology

China's wood dryers have a broad low-end market in the world, and their prices are extremely low, almost monopolizing the entire low-end market, but still have not created a scale. For the special dryers, the drying industry is far from the international leading level. Therefore, China's next goal should be to launch an impact on the characteristics of dryers, combining dryer technology with numerical control to produce automatic dryers with Chinese characteristics, which will further develop China's drying technology. ^[1]

Carpentry is a craft, a unique technique, and a technique commonly used in architecture. It is one of the three traditional Chinese traditions (ie, woodworking, wood, and carpenter). It is said that in the ancient times, houses were built. On the day when the houses are built, they must be called "woodworking" to eliminate evil! When the evil was under control, the carpenter took out a unique tool and stood on the ridge of the roof, shouting good luck, in order to ensure future prosperity and prosperity! In today's society, the profession of "woodworking" is widely used. Such as housing construction, shipbuilding, landscaping, and the most common areas of decoration.

On October 27, 2017, the list of carcinogens published by the International Agency for Research on Cancer of the World Health Organization was initially compiled and referenced. Carpentry and joinery are in the list of 2B carcinogens.