Search results for keyword: wooden
Toothed wheels in ancient China
Toothed wheels have a long history in ancient China, with records of their use stretching back as far as 4000 BCE. For centuries, wooden and metal toothed wheels were used in a variety of ways, including in clocks and other mechanical devices, to measure time and carry out a range of functions.
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1047 
Samantha
The concept and development history of cranes
Crane History and Development
The concept of a crane is centuries old and has enabled construction of some of the most iconic structures of our day. Ancient cranes were built using wooden beams and were specific to the type of task they were designed to fulfill. They were slow and lacked durable ......
Shaper technical parameters
Introduction
One of the most used methods for making sure that a bed is level is to use a bullhead planer. This machine is capable of reaching the tight spots where the level head of a regular planer just can’t fit. With the bullhead planer, the surface of the bed is machined to the exact dimens......
Broaching machine type: internal thread broaching machine
Internal Thread Drawing Bed
Internal thread drawing bed is a tool used for metal wire drawing of different materials such as aluminum, iron, and copper. It is used for reducing the diameter and length of metal wires to produce metal wires with fine thickness and hair-like precision. Internal thre......
Milling machine category: Torx head milling machine
Mortise and Tenon Head Milling Machine
Mortise and tenon head milling machines are equipment specifically designed to cut oblique-angled mortise and tenon joints in the heads of woodworking components. These machines, also referred to as miter head routers, were developed in Europe and Asia as ea......
air drilling
Air softly caresses the length of my body and I am peacefully cocooned in its embrace. I can sense its humidity as it enters my lungs and a feeling of calm begins to overtake me.
The air that fills my lungs is so comforting and tranquil. I can feel the smallest movement of atoms around me and I......
Shear strength
Shear Strength
Shear strength, also known as transverse shear or cut strength, is an important property of materials. It refers to the maximum stress that a material can withstand when undergoing shear, a type of force where an equal and opposite pair of aligned forces act in the same straight li......
GB/T 13384-92 General technical requirements for packaging of mechanical and electrical products (1)
GB/T 13384-92 General Specifications for Packaging of Mechanical and Electrical Products
1. Application: GB/T 13384- 92 specifies the general requirements for packaging of mechanical and electrical products stipulated in the National Standard of P.R. China.
2. Types of Packaging: The mechanical ......
Common Material Density
Common Material Densities
In engineering and applied sciences, the density of materials is a critical factor in understanding their physical and chemical properties. Different materials have different densities, and understanding how much a particular material weighs compared to another one is es......
Development of gear grinding machine tools
The Development of Gear Grinding Machines
The invention of gears is one of the most important advancements in the mechanical world since it enables machines to take advantage of the principles of mechanical transmission. The use of gears to transmit power can be traced back centuries, but the in......
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