Merchandise Description
Heung Kong Precision Technology Co., Ltd. is found in HangZhou Metropolis, the main metropolis of substantial-finish manufacturing in the ZheJiang -Hong Kong-Macao Increased Bay Location, China. It is a specialist market and trade business concentrating on the design and manufacture of precision metal and plastic elements.
Heung Kong Precision Technological innovation Co., Ltd. is a collaborative innovation cooperation unit of the Innovation Centre of HangZhou College of Technology. It has virtually 10 secure and reputable companions in the Pearl River Delta, providing buyers with competitive costs and large-high quality customized solution processing providers.
Our skilled group is made up of numerous engineers in the discipline of CNC machining with a lot more than 15 a long time. The firm supplies buyers with constant and reliable providers and produces price for customers by developing a mature, stable and high-good quality provide chain.
Company tackle: No. 17, Xihu (West Lake) Dis. Highway, Xihu (West Lake) Dis.cheng District, HangZhou Town, ZheJiang Province
Product & Provider
CNC machining typically refers to pc electronic handle precision machining, CNC machining lathes, CNC machining milling devices, CNC machining boring and milling devices, and so on.
CNC machining positive aspects:
one. The variety of tooling is greatly lowered, and intricate tooling is not necessary to process components with complex shapes. If you want to adjust the shape and dimension of the element, you only require to modify the component processing program, which is suited for new merchandise growth and modification.
2. The processing high quality is secure, the processing precision is high, and the repeatability is high, which is ideal for the processing specifications of plane.
three. The production performance is higher in the situation of multi-selection and modest batch manufacturing, which can lessen the time for production preparation, device tool adjustment and procedure inspection, and reduces the reducing time due to the use of the best reducing volume.
four. It can approach intricate profiles that are difficult to method by traditional methods, and even approach some unobservable processing parts.
Automatic lathe is a substantial-efficiency, large-precision, minimal-sounds instrument-variety automated lathe. It is an automatic processing equipment tool that controls the processing plan through a cam (CNC is also a sort of automated lathe, below refers to a non-CNC computerized lathe).
Benefits of computerized lathe processing:
one. Automatic processing: no manual procedure is essential, and intricate parts can be processed at the same time with exterior circle, spherical floor, conical area, arc area, action, groove, embossing, drilling, tapping, die, cutting and other procedures. It can be accomplished in 1 processing.
two.High handle precision: the precision of the equipment resource spindle can achieve .003mm, the fine adjustment of the slider is managed by a micrometer, and the dimensional manage precision can achieve .005mm. The bare minimum reducing feed can be managed to .005, and the roughness of the elements (copper areas) can be as minimal as Ra0.04-.08.
3. Computerized feeding: the feeding system automatically feeds the primary shaft, and the machine immediately stops and alarms when the material is concluded, and the processing approach does not need guide viewing of the content, obtaining a fully automated producing approach. One particular operator can work multiple machines at the same time.
four. Substantial production performance: a machining method is finished for each revolution of the cam. Several tools can be minimize at the very same time, the processing performance is extremely substantial, and the processing effectiveness has the advantages that CNC cannot match.
Sheet metal processing is referred to as sheet steel processing. Sheet metallic areas are skinny-plate components elements that can be processed by stamping, bending, stretching and other signifies.
The primary processes are:
Strain riveting, increasing riveting, pulling mom, pulling riveting, riveting, chamfering, bending, forming, chopping, blanking, blanking, punching, punching convex hull, punching and tearing, punching, tapping, leveling , Back teeth, drilling, chamfering, punching, countersinking, flattening, punching mesh, reaming.
The supplies generally utilized in sheet metal processing are cold-rolled sheet (SPCC), very hot-rolled sheet (SHCC), galvanized sheet (SECC, SGCC), copper (CU), brass, red copper, beryllium copper, aluminum sheet (6061, 5052 , 1571, 1060, 6063, duralumin, etc.), stainless metal (SUS301, SUS304).
Stamping processing is the production technological innovation of product elements with particular condition, dimensions and overall performance by implies of the electrical power of conventional or specific stamping equipment, so that the sheet metallic is immediately subjected to deformation force in the mold and deformed. It is 1 of the primary methods of plastic operating (or press functioning) of metals.
Positive aspects of stamping processing:
1.The manufacturing performance of stamping processing is high, and the procedure is handy, and it is simple to understand mechanization and automation. The number of strokes of ordinary presses can attain dozens of occasions for every moment, and the high-pace pressure can achieve hundreds or even thousands of occasions per minute, and 1 punching piece may possibly be received for each stamping stroke.
two. Because the die makes certain the measurement and shape accuracy of the stamping parts, and generally does not hurt the floor top quality of the stamping areas, and the life of the die is typically prolonged, the quality of the stamping is steady and the interchangeability is good.
3. Stamping can approach components with a extensive variety of sizes and complicated designs, this kind of as stopwatches as small as clocks, as massive as automobile longitudinal beams, covering components, and so forth., furthermore the cold deformation hardening result of the material in the course of stamping, the power and stiffness of stamping are increased.
4. Stamping normally does not generate chips and scraps, consumes less material, and does not demand other heating tools, so it is a materials-preserving and power-saving processing method, and the expense of stamping parts is lower.
Surface area remedy is a approach of artificially forming a area layer with different mechanical, actual physical and chemical homes of the substrate on the surface area of the substrate.
The function of surface remedy is to meet up with the corrosion resistance, put on resistance, decoration or other unique functional needs of the solution.
The most typically utilized surface therapy processes are:
Anodizing, electrophoresis, electroplating, PVD, powder coating, metal wire drawing, sandblasting, sprucing, etching, and many others.
1) What’s your gain?
We offer non-normal/OEM/tailored service.
We have steady and higher-good quality provide chain to supply you with steady and trustworthy solutions.
2) How shortly can I get your quotation?
We usually estimate inside of twenty several hours. If you are very urgent, pls call us or tell us in your electronic mail.
3) Will my style drawing be safe after you get it?
Yes, we can signal the NDA ahead of you send out the design file.
four) Obtainable for personalized design drawings?
Indeed. The design and style file format is DWG, DXF,DXW, IGES, Phase, PDF and so forth.
5) Do you supply samples?
Sure. Just want sample price.The sample cost could be refunded in mass production.
6) What is the top time?
It relies upon on the amount, Generally 7-21 days soon after order verified.
| Service |
CNC Machining
|
| Automatic Lathe Machining | |
|
Sheet Metal Fabrication
|
|
|
Stamping Parts
|
|
|
Surface Treatment
|
|
| Material |
Aluminum
|
|
Stainless Steel, Steel
|
|
|
Brass
|
|
|
Copper
|
|
|
Plastic
|
|
| Surface treatment | Sandblasting, Anodizing Color, Blackenning, Zinc\Nickl Plating, Polishing And Brushing,Etc. |
| MOQ | Quantity is not limited, small order can be accepted |
|
Drawing Format
|
STEP, CAD, STP, DWG, DXF, PDF, Gis, etc Or Samples
|
|
Delivery Time
|
5-25 Days, Depends on the quantities
|
|
Tolerance
|
+/- 0.01mm
|
|
QC
|
100% Inspection before shipment
|
|
OEM&ODM
|
We can design for you or production products same as your drawing
|
| Service |
CNC Machining
|
| Automatic Lathe Machining | |
|
Sheet Metal Fabrication
|
|
|
Stamping Parts
|
|
|
Surface Treatment
|
|
| Material |
Aluminum
|
|
Stainless Steel, Steel
|
|
|
Brass
|
|
|
Copper
|
|
|
Plastic
|
|
| Surface treatment | Sandblasting, Anodizing Color, Blackenning, Zinc\Nickl Plating, Polishing And Brushing,Etc. |
| MOQ | Quantity is not limited, small order can be accepted |
|
Drawing Format
|
STEP, CAD, STP, DWG, DXF, PDF, Gis, etc Or Samples
|
|
Delivery Time
|
5-25 Days, Depends on the quantities
|
|
Tolerance
|
+/- 0.01mm
|
|
QC
|
100% Inspection before shipment
|
|
OEM&ODM
|
We can design for you or production products same as your drawing
|
Screw Shaft Features Explained
When choosing the screw shaft for your application, you should consider the features of the screws: threads, lead, pitch, helix angle, and more. You may be wondering what these features mean and how they affect the screw’s performance. This article explains the differences between these factors. The following are the features that affect the performance of screws and their properties. You can use these to make an informed decision and purchase the right screw. You can learn more about these features by reading the following articles.
Threads
The major diameter of a screw thread is the larger of the two extreme diameters. The major diameter of a screw is also known as the outside diameter. This dimension can’t be directly measured, but can be determined by measuring the distance between adjacent sides of the thread. In addition, the mean area of a screw thread is known as the pitch. The diameter of the thread and pitch line are directly proportional to the overall size of the screw.
The threads are classified by the diameter and pitch. The major diameter of a screw shaft has the largest number of threads; the smaller diameter is called the minor diameter. The thread angle, also known as the helix angle, is measured perpendicular to the axis of the screw. The major diameter is the largest part of the screw; the minor diameter is the lower end of the screw. The thread angle is the half distance between the major and minor diameters. The minor diameter is the outer surface of the screw, while the top surface corresponds to the major diameter.
The pitch is measured at the crest of a thread. In other words, a 16-pitch thread has a diameter of one sixteenth of the screw shaft’s diameter. The actual diameter is 0.03125 inches. Moreover, a large number of manufacturers use this measurement to determine the thread pitch. The pitch diameter is a critical factor in successful mating of male and female threads. So, when determining the pitch diameter, you need to check the thread pitch plate of a screw.
Lead
In screw shaft applications, a solid, corrosion-resistant material is an important requirement. Lead screws are a robust choice, which ensure shaft direction accuracy. This material is widely used in lathes and measuring instruments. They have black oxide coatings and are suited for environments where rusting is not acceptable. These screws are also relatively inexpensive. Here are some advantages of lead screws. They are highly durable, cost-effective, and offer high reliability.
A lead screw system may have multiple starts, or threads that run parallel to each other. The lead is the distance the nut travels along the shaft during a single revolution. The smaller the lead, the tighter the thread. The lead can also be expressed as the pitch, which is the distance between adjacent thread crests or troughs. A lead screw has a smaller pitch than a nut, and the smaller the lead, the greater its linear speed.
When choosing lead screws, the critical speed is the maximum number of revolutions per minute. This is determined by the minor diameter of the shaft and its length. The critical speed should never be exceeded or the lead will become distorted or cracked. The recommended operational speed is around eighty percent of the evaluated critical speed. Moreover, the lead screw must be properly aligned to avoid excessive vibrations. In addition, the screw pitch must be within the design tolerance of the shaft.
Pitch
The pitch of a screw shaft can be viewed as the distance between the crest of a thread and the surface where the threads meet. In mathematics, the pitch is equivalent to the length of one wavelength. The pitch of a screw shaft also relates to the diameter of the threads. In the following, the pitch of a screw is explained. It is important to note that the pitch of a screw is not a metric measurement. In the following, we will define the two terms and discuss how they relate to one another.
A screw’s pitch is not the same in all countries. The United Kingdom, Canada, and the United States have standardized screw threads according to the UN system. Therefore, there is a need to specify the pitch of a screw shaft when a screw is being manufactured. The standardization of pitch and diameter has also reduced the cost of screw manufacturing. Nevertheless, screw threads are still expensive. The United Kingdom, Canada, and the United States have introduced a system for the calculation of screw pitch.
The pitch of a lead screw is the same as that of a lead screw. The diameter is 0.25 inches and the circumference is 0.79 inches. When calculating the mechanical advantage of a screw, divide the diameter by its pitch. The larger the pitch, the more threads the screw has, increasing its critical speed and stiffness. The pitch of a screw shaft is also proportional to the number of starts in the shaft.
Helix angle
The helix angle of a screw shaft is the angle formed between the circumference of the cylinder and its helix. Both of these angles must be equal to 90 degrees. The larger the lead angle, the smaller the helix angle. Some reference materials refer to angle B as the helix angle. However, the actual angle is derived from calculating the screw geometry. Read on for more information. Listed below are some of the differences between helix angles and lead angles.
High helix screws have a long lead. This length reduces the number of effective turns of the screw. Because of this, fine pitch screws are usually used for small movements. A typical example is a 16-mm x 5-inch screw. Another example of a fine pitch screw is a 12x2mm screw. It is used for small moves. This type of screw has a lower lead angle than a high-helix screw.
A screw’s helix angle refers to the relative angle of the flight of the helix to the plane of the screw axis. While screw helix angles are not often altered from the standard square pitch, they can have an effect on processing. Changing the helix angle is more common in two-stage screws, special mixing screws, and metering screws. When a screw is designed for this function, it should be able to handle the materials it is made of.
Size
The diameter of a screw is its diameter, measured from the head to the shaft. Screw diameters are standardized by the American Society of Mechanical Engineers. The diameters of screws range from 3/50 inches to sixteen inches, and more recently, fractions of an inch have been added. However, shaft diameters may vary depending on the job, so it is important to know the right size for the job. The size chart below shows the common sizes for screws.
Screws are generally referred to by their gauge, which is the major diameter. Screws with a major diameter less than a quarter of an inch are usually labeled as #0 to #14 and larger screws are labeled as sizes in fractions of an inch. There are also decimal equivalents of each screw size. These measurements will help you choose the correct size for your project. The screws with the smaller diameters were not tested.
In the previous section, we described the different shaft sizes and their specifications. These screw sizes are usually indicated by fractions of an inch, followed by a number of threads per inch. For example, a ten-inch screw has a shaft size of 2” with a thread pitch of 1/4″, and it has a diameter of two inches. This screw is welded to a two-inch Sch. 40 pipe. Alternatively, it can be welded to a 9-inch O.A.L. pipe.
Shape
Screws come in a wide variety of sizes and shapes, from the size of a quarter to the diameter of a U.S. quarter. Screws’ main function is to hold objects together and to translate torque into linear force. The shape of a screw shaft, if it is round, is the primary characteristic used to define its use. The following chart shows how the screw shaft differs from a quarter:
The shape of a screw shaft is determined by two features: its major diameter, or distance from the outer edge of the thread on one side to the inner smooth surface of the shaft. These are generally two to sixteen millimeters in diameter. Screw shafts can have either a fully threaded shank or a half-threaded shank, with the latter providing better stability. Regardless of whether the screw shaft is round or domed, it is important to understand the different characteristics of a screw before attempting to install it into a project.
The screw shaft’s diameter is also important to its application. The ball circle diameter refers to the distance between the center of two opposite balls in contact with the grooves. The root diameter, on the other hand, refers to the distance between the bottommost grooves of the screw shaft. These are the two main measurements that define the screw’s overall size. Pitch and nominal diameter are important measurements for a screw’s performance in a particular application.
Lubrication
In most cases, lubrication of a screw shaft is accomplished with grease. Grease is made up of mineral or synthetic oil, thickening agent, and additives. The thickening agent can be a variety of different substances, including lithium, bentonite, aluminum, and barium complexes. A common classification for lubricating grease is NLGI Grade. While this may not be necessary when specifying the type of grease to use for a particular application, it is a useful qualitative measure.
When selecting a lubricant for a screw shaft, the operating temperature and the speed of the shaft determine the type of oil to use. Too much oil can result in heat buildup, while too little can lead to excessive wear and friction. The proper lubrication of a screw shaft directly affects the temperature rise of a ball screw, and the life of the assembly. To ensure the proper lubrication, follow the guidelines below.
Ideally, a low lubrication level is appropriate for medium-sized feed stuff factories. High lubrication level is appropriate for larger feed stuff factories. However, in low-speed applications, the lubrication level should be sufficiently high to ensure that the screws run freely. This is the only way to reduce friction and ensure the longest life possible. Lubrication of screw shafts is an important consideration for any screw.
