Lizhan General Household Tool Kit: Recent Episodes
Lizhan
In many cases, the Automobile Service Home Tools use, and maintenance of screws and nuts will require professional tools for disassembly and assembly operations. According to the understanding of the knowledge of screws and nuts, Zhongyu Standard Parts Network will share the structure and matching requirements of screw and nut disassembly tools. Hope It's helpful to everyone. 1. The structure of the screw and nut disassembly tool
The rotating structure is the driving structure that drives the first rotating structure, and is used to drive the rotation for operation. For the second rotating structure, the angle between the rotating centerline and the centerline of the rotating structure should be set at 0°~180°. The rotation direction of the screw-nut detachable driving structure is set to be the same as the rotation direction of the disassembly tool, so as to realize maintenance and repair in a small space.
The rotating structure is shown in Figure 1 and Figure 2 as follows: Second, the size matching requires the second set of rods to be connected to the adjacent section of the second connecting rod. At this time, the vertical plane of the screw and nut is very small, and the reversing transmission At this time, the screw and nut can be treated as a whole to make the external phase appear hexagonal. At this time, the socket is set at the other end of the second connecting rod, the screw and nut are melted, and the T-shaped overall construction is carried out, and it can be rotated based on the external force
. The handle is driven by the handle connecting rod to drive the gear into the screw and nut. After the connection is fixed, the other end is rotated and connected, and the fixed rod is vertically set for melting the screw and the nut. The sleeve is set to rotate around the connection point, the fixed rod and the linkage rod at the other end can be connected to rotate, and the rotation has a sense of rotation, so that the corresponding socket head corresponds to the opening of the socket head, and the corresponding screw nut is fixed. Rotate without moving to realize the paired disassembly and assembly of screws and nuts.
Thread size change In order to further reduce the weight of the fastener, the patented technology (finishing and strengthening technology) is used on the basis of the ordinary titanium high-lock bolt with the original 2P finishing thread Developed lightweight titanium high-lock bolts with short finishing threads, finishing with 1.5P and 1P threads.
Compared with the first generation of ordinary titanium high-lock bolts, the light-weight titanium high-lock bolts have shortened the end threads, and the length of the high-lock nuts is also shortened, which in turn reduces the overall structure weight by 10%. As shown in Figure 3, the relationship between the two can be seen from the figure. Compared with the ordinary titanium bolt connection, the weight reduction effect is more obvious due to the shorter thread length. Figure 3 Comparison of the installation of ordinary high-lock bolts and light-duty high-lock bolts. In addition,
in the past, most aircraft assembly uses long threaded connections, while modern aircraft are mostly refined designs. In the shear-resistant parts or the parts with small forces, the bolts use short threads. With short nuts, the weight can be further reduced. Not only can the weight be reduced by optimizing the thread, but also on the titanium ring groove nail similar to the thread. For example, on the ring groove of the ring groove nail,
the equidistant Automobile Service Home Tools groove was used in the early stage, and the optimization design was carried out on this basis. The ring groove of the latter proportional ring groove nail, as shown in Figure 4, not only can match the structural strength uniformly, but also reduce the effective area of ??action by about 1.5 to 2 tooth pitches, while reducing the matching titanium Alloy ring cap, so as to achieve a 20% weight reduction effect in the ring groove area. Figure 4 Proportional ring groove 3) Combination connection optimization In a complex fastening system, high-strength
drywall screw Range?
RECESS? Philips,Square,Torx
DIA?#6-3.5 #8-4.2 #10-4.8 #12-5.5 #14-6.3
HEAD?bugle head
LENGTH?#6,#7,#8-7.9-8.4 #10 8.6-9.2 #12,#14-11.8-12.4
Grade?C1022A
NORM?
Surface?black phosphate ,zinc plated ,Yellow Zinc plated, Dacromet, Ruspert, Magni
Thread?fine thread coarse thread
Preventive measures for hydrogen embrittlement (1) Normal electroplating, strictly remove hydrogen. Using the reversibility of hydrogen in metal to remove hydrogen from electroplated bolts is an important method to slow down or eliminate hydrogen embrittlement. During processing, place the electroplated steel bolts in an oven for heating. The baking temperature is about 200°C, and the baking time varies according to the strength of the steel.
The higher the strength, the longer the baking time. The hydrogen in the bolt material forms hydrogen overflow at high temperature to achieve the purpose of hydrogen removal. (2) Low hydrogen embrittlement electroplating. Low hydrogen embrittlement electroplating is a process developed in the 1960s and 1970s for the study of hydrogen embrittlement of aircraft parts, including low hydrogen embrittlement cadmium plating, low hydrogen embrittlement cadmium titanium plating,
and low hydrogen csk self drilling screw zinc plating. Low hydrogen embrittlement electroplating requires stress relief and tempering before plating. Strong acid can not be used for pickling. Instead, sandblasting is used to remove oxide scale and surface dirt, or vacuum heat treatment is used to avoid oxide scale. During the electroplating process, on the one hand, the formulation of the plating solution is adjusted, and on the other hand, the voltage is reduced, the current density is strictly controlled, and the adsorption of hydrogen particles is reduced. The subsequent process also requires strict baking and hydrogen removal, and the hydrogen removal time is at least 18h.
Ordinary bolts can be Automotive Service Home Tools factory into three grades of A, B, and C according to the production accuracy. Even if the same lubricating material is coated on thread surfaces with different surface treatments, the friction coefficient will be different. A and B grades are refined bolts, and C grade is rough bolts. Through a series of chemical changes and corrosion on the surface of the high-strength bolt, the high-strength bolt material will decarburize itself.
Therefore, the rolling process is widely used. I will say it separately here because the author believes that the material is really important.6, 4. Rolling (rolling) threading refers to a processing method that uses plastic deformation to form thread teeth. At this time, the surface of the high-strength bolt that needs to be quenched does not need the pre-designed hardness, and the mechanical properties of the high-strength bolt will be greatly reduced.
And different lubricating materials are suitable for different working temperatures. Generally, the smaller bolts are formed by cold heading, and the larger bolts are formed by hot heading. Different lubricating materials coated on the same thread surface have different friction coefficients. If the process is adjusted, it may affect product quality or reduce product performance. According to the thread length, it is divided into two types: full thread and non-full thread. Decarburization will cause local strength reduction. 6. Grease cannot be used in a vacuum environment
Socket Sets Suppliers are the ones who make and supply cement boards. They are also known as board makers or joint makers. These manufacturers make sure that every joint or screw that is used in the construction of a cement board is done so meticulously. This is because these boards are meant to be long-lasting and should last a lifetime. To ensure the longevity of a board, the right kind of material has to be used and the right kind of quality of Cement Board Screws should be used.
This is the reason why manufacturers of these tools are the best people to turn to if you want to buy cement boards. Manufacturers know the materials that should be used for the joints on these boards. The kind of material that is usually used for making these boards are aluminum and steel. Wood is also an option but it can only withstand extreme heat and weather conditions. As a result these manufacturers also make use of other materials which are more weather-resistant such as melamine and fiberglass.
There are many different kinds of Cement Board Screws. These include T-nuts, L-nuts, plate nuts, cap nuts and wing nuts. Each type has its own particular characteristics and features. Cement board joints are very important since they determine the durability of the entire board. It is therefore important to choose the right kind of Cement Board Screws.
There are a number of companies who manufacture these Cement Board Screws. The best way of identifying the best company is by ensuring that they have been able to establish a good name for themselves over the years. A good company will be able to cater to all the manufacturing needs of boards. They will be able to create boards according to your specifications. They will be able to offer superior quality as well as affordable prices.