PROCESS MANAGEMENT: The commitment to Quality of china plastic machining parts in Honscn Co.,Ltd is based on the understanding of what is important for the success of customers. We have established a Quality Management framework that defines processes and assures the proper execution. It incorporates the responsibility of our employees and enables efficient execution across all parts of our organization.
We always actively participate in various exhibitions, seminars, conferences, and other industry activities, whether is large or small, not only to enrich our knowledge of the industry dynamics but also to enhance the presence of our HONSCN in the industry and to seek more cooperation opportunity with global customers. We also remain active in various social media, such as Twitter, Facebook, YouTube, and so on, giving global customers multiple channels to know more clearly about our company, our products, our service and to interact with us.
At Honscn, we offer varied services which are comprised of customization (product and packaging mainly), free sample, technical support, delivery, etc. All these are expected to, together with the said products, satisfy the customers' demands and offer them excellent purchase experience. All are available during the sales of china plastic machining parts.
Shenzhen Honscn is a professional manufacturer of CNC Machine Parts, Auto Lathe Machine Parts, and Screw Fasteners. We offer OEM and ODM service with any related products for customers. We have a professional team of product design and engineers, as well as a professional QC team, our sales and documentation and logistics departments can finish the requirements of presentation of documents under various payment methods and different transportation modes.
Usually, we can provide 3D drawings/drawings, quantities, required manufacturing processes, and materials based on the customer's requirements. Our engineers will carefully review and read them, and provide quotes for them. If customers require it, we will also provide samples according to their requirements.
If confirmed the quotation okay, the customer needs us to provide the Mill Test Crtificate of this product conforming to EU standards, such as CE, RoHS, REACH before placing order. All of our products are in accordance with all the European certification, such as CE, RoHS, REACH, etc., and all of them have prepared standard documents for customers checking.
After the customer confirms the order, they propose to make it according to their sample. We will make it based on the samples he sent us.
We start to prepare the order materials when customer confirm all the details such as material, size, tolerance, surface finish and other details of the final sample.
After the package such as qty, label, shipping mark etc. are provided by customer, we starts to arrange the mass production. After all the goods finished, send pictures to customer for approval. We promise the packag is same as customer requested, mass products are exactly the same as the final samples. The following photos of the shipment, the passing rate of the third-party inspection of our company is 100%.
After the customer receives the sample, they will apply our product to the machine equipment for accessory assembly. Ensuring smooth assembly of the machine. We always pay much attention to the quality of our products, which is recognized by customers and repurchased constantly.
General steps of plastic parts designPlastic parts are designed on the basis of industrial modeling. First, see whether there are similar products for reference, and then carry out detailed functional decomposition of products and parts to determine the main process problems such as parts folding, wall thickness, demoulding slope, transition treatment between parts, connection treatment and strength treatment of parts.1. Similar reference
Before design, first look for similar products of the company and peers, what problems and deficiencies have occurred in the original products, and refer to the existing mature structure to avoid problematic structural forms.2. Determine the part discount, transition, connection and clearance treatment between partsUnderstand the modeling style from the modeling drawing and effect drawing, cooperate with the functional decomposition of the product, determine the number of parts (different surface states are either divided into different parts, or there must be over treatment between different surfaces), determine the over treatment between parts' surfaces, and determine the connection mode and fit clearance between parts.
3. Determination of part strength and connection strengthDetermine the wall thickness of the part body according to the product size. The strength of the part itself is determined by the wall thickness of the plastic part, the structural form (the plastic part in the shape of a flat plate has the worst strength), the stiffener and the stiffener. While determining the single strength of parts, the connection strength between parts must be determined. The methods to change the connection strength include: adding screw column, adding stop, adding buckle position and adding reinforcing bone against top and bottom.4. Determination of demoulding slope
The demoulding slope shall be comprehensively determined according to the material (PP, PE silica gel and rubber can be demoulded forcibly), surface state (the slope of decorative grain shall be greater than that of smooth surface, and the slope of etched surface shall be 0.5 degrees greater than that required by the template as far as possible, so as to ensure that the etched surface will not be damaged and improve the yield of products), transparency or not determines the demoulding slope of parts (the transparent slope shall be greater).Material types recommended by different product series of the companySurface treatment of plastic parts
Wall thickness selection of plastic partsFor plastic parts, the uniformity of wall thickness is required, and the workpiece with uneven wall thickness will have shrinkage traces. It is required that the ratio of stiffener to main wall thickness should be less than 0.4, and the maximum ratio should not exceed 0.6.Demoulding slope of plastic parts
In the construction of stereoscopic drawing, where the appearance and assembly are affected, the slope needs to be drawn, and the slope is generally not drawn for stiffeners.The demoulding slope of plastic parts is determined by the material, surface decoration status and whether the parts are transparent or not. The demoulding slope of hard plastic is greater than that of soft plastic. The higher the part, the deeper the hole, and the smaller the slope.Recommended demoulding slope for different materials
Numerical values of different accuracy in different size rangesDimensional accuracy of plastic partsGenerally, the accuracy of plastic parts is not high. In practical use, we mainly check the assembly dimensions, and mainly mark the overall dimensions, assembly dimensions and other dimensions that need to be controlled on the plan.
In practice, we mainly consider the consistency of dimensions. The edges of the upper and lower covers need to be aligned.Economic accuracy of different materialsNumerical values of different accuracy in different size ranges
Surface roughness of plastics1) The roughness of the etched surface cannot be marked. Where the plastic surface finish is particularly high, circle this range and mark the surface state as mirror.2) The surface of plastic parts is generally smooth and bright, and the surface roughness is generally ra2.5 0.2um.
3) The surface roughness of plastic mainly depends on the surface roughness of mold cavity. The surface roughness of mold is required to be one to two levels higher than that of plastic parts. The mold surface can reach ra0.05 by ultrasonic and electrolytic polishing.FilletThe fillet value of injection molding is determined by the adjacent wall thickness, generally 0.5 1.5 times of the wall thickness, but not less than 0.5mm.
The position of the parting surface shall be carefully selected. There is a fillet on the parting surface, and the fillet part shall be on the other side of the die. It is difficult to make, and there are fine trace lines at the fillet. However, fillet is required when anti cutting hand is required.Stiffener problemThe injection molding process is similar to the casting process. The non-uniformity of wall thickness will produce shrinkage defects. Generally, the wall thickness of reinforcement is 0.4 times of the main body thickness, and the maximum is no more than 0.6 times. The spacing between bars is greater than 4T, and the height of bars is less than 3T. In the method of improving the strength of parts, it is generally reinforced without increasing the wall thickness.
The reinforcement of the screw column shall be at least 1.0mm lower than the end face of the column, and the reinforcement shall be at least 1.0mm lower than the part surface or the parting surface.When multiple bars intersect, pay attention to the non-uniformity of wall thickness caused by the intersection.Design of stiffeners for plastic parts
Bearing surfacePlastic is easy to deform. In terms of positioning, it should be classified as the positioning of wool embryo. In terms of positioning area, it should be small. For example, the support of plane should be changed into small convex points and convex rings.Oblique roof and row position
The inclined top and row position move in the parting direction and perpendicular to the parting direction. The inclined top and row position shall be perpendicular to the parting direction, and there shall be sufficient movement space, as shown in the following figure:Treatment of plastic limit process problems1) Special treatment of wall thickness
For particularly large workpieces, such as the shell of toy cars, the wall thickness can be relatively thin by using the method of multi-point glue feeding. The local glue position of the column is thick, which is treated as shown in the following figure.Special treatment of wall thickness2) Treatment of small slope and vertical surface
The die surface has high dimensional accuracy, high surface finish, small demoulding resistance and small demoulding slope. In order to achieve this purpose, the parts with small inclination of the workpiece are inserted separately, and the inserts are processed by wire cutting and grinding, as shown in the figure below.To ensure that the side wall is vertical, the running position or inclined top is required. There is an interface line at the running position. In order to avoid obvious interface, the wiring is generally placed at the junction of fillet and large surface.Treatment of small slope and vertical surface
To ensure that the side wall is vertical, the running position or inclined top is required. There is an interface line at the running position. In order to avoid obvious interface, the wiring is generally placed at the junction of fillet and large surface.Problems often to be solved for plastic parts1) Transition processing problem
The accuracy of plastic parts is generally not high. There must be transition treatment between adjacent parts and different surfaces of the same part.Small grooves are generally used for transition between different surfaces of the same part, and small grooves and high-low staggered surfaces can be used between different parts, as shown in the figure.Surface over treatment
2) Clearance value of plastic partsParts are directly assembled without movement, generally 0.1mm;The seam is generally 0.15mm;
The minimum clearance between parts without contact is 0.3mm, generally 0.5mm.3) The common forms and clearance of plastic parts are shown in the figureCommon forms and clearance taking method of stop of plastic parts
1 Tool change of hat type magazineThe fixed address tool change mode is mostly adopted, and the tool number is fixed corresponding to the tool seat number. The tool change action is realized by the lateral movement of the tool magazine and the up and down movement of the spindle, which is referred to as the spindle tool change mode for short. Because it has no tool change manipulator, the tool selection action cannot be preselected before the tool change action. The tool change instruction and tool selection instruction are generally written in the same program segment, and the instruction format is as follows:M06 T
When the command is executed, the tool magazine first turns the tool holder corresponding to the tool number on the spindle to the tool change position, and switches the tool on the spindle back to the tool holder, and then the tool magazine turns the tool specified in the command to the tool change position and changes the spindle.For this tool magazine, even if TX x is executed before M06, the tool cannot be preselected, * the action of final tool selection is still executed when M06 is executed. If there is no TX X in front of M06, the system will give an alarm.2 Tool change of disc and chain magazine
Most of them use random address tool change mode. The corresponding relationship between tool number and tool seat number is random, but its corresponding relationship can be remembered by NC system. The tool change of this tool magazine depends on the manipulator. The action of the command and tool change is: the tool command TX controls the rotation of the tool magazine and turns the selected tool to the tool change working position, while the tool change command M06 controls the action of the tool change manipulator to realize the tool exchange between the spindle tool and the tool change position of the tool magazine. The tool selection command and tool change command can be in the same program segment or written separately. The actions corresponding to tool selection and tool change command can also be operated simultaneously or separately. The instruction format is as follows:
Tx x M06;When the command is executed, the tool magazine first turns the TX tool to the tool change position, and then the manipulator exchanges the tool of the tool magazine with the tool of the spindle to realize the purpose of changing the TX tool to the spindle.After reading the above two methods, it can be seen that method 2 overlaps the tool selection action with the machining action, so that when changing the tool, it is not necessary to select the tool and change the tool directly, which improves the work efficiency.
As mentioned earlier, the tool change command of the tool magazine is related to the machine tool manufacturer. For example, some tool magazines require that not only the Z axis must return to the tool change point, but also the Y axis must return to the tool change point. The program format is as follows:
When writing the instructions of tool selection and tool change in the same program section, the execution rules of tools from different manufacturers may also be different. If any, regardless of the writing order, the rules of tool selection and tool change shall be followed. Some rules stipulate that the tool selection command must be written before the tool change command is executed. Otherwise, the action is to change the tool first and then select the tool, as shown in the above program. In this case, if the tool selection command is not written before the M06 command is executed, the system will give an alarm.
Long long agoOnce upon a time, people said that the country is an important weaponIt refers to the imperial jade seal handed down by Qin Shihuang on behalf of the heavenly power
Later, it generally refers to the jade seal carved by emperors of all dynastiesOn October 5, 2016, Sotheby's auction house auctioned the Hotan green jade seal "the treasure of the supreme emperor" used by one party after the reign of Emperor Qianlong in Hong Kong for HK $91.48 million. At that time, the auction aroused fierce opposition from many parties in China.Nowadays, the title of national heavy weapon refers to manufacturing equipment
Manufacturing equipment determines the level of processing and manufacturingThe level of processing and manufacturing is an intuitive expression of a country's national strengthHowever, what we are talking about today is only this kind of national manufacturing equipment
CNC machining centerIt can not only process and manufacture precision workpieces full of mechanical beautyCNC itself is also an exquisite and elegant industrial creation
(just a little loud)DMG GM 16|6 series six axis automatic turning centerThat's so bad
What can this CNC machining center do?Let's say soIt is known as the top industrial manufacture with the highest difficulty in R & D and manufacturing
Which can best reflect the highest level of industrial development of a countryTurbofan engineIt is polished with CNC bit by bit
As for various high-precision metal partsThere are too many to enumerateThere are turning, boring and milling, grinding and grooving
There are punching, gear shaper and testingThe tools that appear are not completely duplicatedA large CNC machining center
CNC can shape the precision and shape of complex workpieces at one time. What you eat is iron, and what you spit out is different work with high precision. However, the time is hundreds of times shorter than before, and the precision yield has been improved exponentially. The most irritating thing is that it also has adaptability and can be updated at any time.For example, in the past, if a master of worm gear wanted to make a good worm, you had to practice it for ten years and eight years. Hey, now if you want to process a completely different part and make a new process, you can sit and drink coffee. All this needs the support of equipment (tools), that is, it depends on how the manufacturing equipment of this manufacturing equipment plays with the equipmentCNC equipment: all kinds of machining tools
A CNC machining centerBe responsible for tool storage and tool change equipmentIt is called tool holder, also known as tool magazine
We all know the English word: tool magazine(in fact, the original meaning of the word magazine comes from the warehouse)To improve the working ability of CNC
In addition to pursuing more precise controlIt is also necessary to increase the capacity of the tool magazine and speed up the efficiency of tool changeThere are many ways to achieve this
According to the number of tools stored in the tool magazine and the tool taking methodCan be divided into different typesThe common ones are linear type, hat type, disc type, chain type magazine and so on
The power turret should be regarded as the smallest and most portable CNC tool magazineThe utility model is composed of a rotary cutter head and a box bodyA motor is installed in the box
The motor rotor is connected to the central shaft of the NC machine toolThe stator is fixed on the box for tool changeDMG BMT power turret with motor
A CNC machining center can install multiple power turretsThe upgraded version of the power turret is a hat type magazineIt is similar to the integration of turret and spindle head
It is a hat type tool magazine that automatically changes tools by moving the spindle up and downWhen the tool on the spindle enters the clamping slot of the hat magazineThe spindle moves up out of the tool
At the same time, the magazine rotates rapidlyWhen the tool to be replaced is aligned below the spindleThe spindle moves down so that the tool enters the spindle taper hole
After clamping the tool, the magazine returns to its original positionThe tool position of hat magazine is still limited (generally 16 34 tool positions)And it's always up and down
It takes up a lot of time and is not efficientIt also affects the working stroke of the spindleHowever, for a universal manufacturing equipment
It is not enough to add several independent tool holdersAfter all, a high-precision CNC machining center needs to coverLathe worker, milling worker, grinder worker, line drawing worker, heat treatment and other links
If you want to finish so much work at one timeDon't hide hundreds of knives with you. I'm sorry to leave the factory, okay!For CNC machining center
Linear magazine and chain magazine are its armed beltsChain magazineLarge CNC machining centers often need to carry hundreds of tools
If you don't agree, you have to take out dozens or hundreds of fancy tools to connect ironChain magazine of traditional armed belt typeStill not all competent
So there is a large combined extended automatic tool changing chain tool magazine(does such a long name seem particularly corrupt?)It is also called central warehouse tool magazine
The motor drives the winding chain at high speedQuickly send the required tool to the specified positionThen it is taken out by the mechanical arm and sent to the main shaft
Exchange positions with the tools that have been removed at the same timeTo save tool change timeWheel magazine of DMG mori
The disc magazine has been developed to the extremeThe cutter bases are evenly arranged around the huge hollow runnerOne cutter wheel can hold 40 60 cutters
In the assembly workshop of DMG moriYou can see the spectacular installation process of five or even six layer cutter wheelsOriginal title: the beauty of tool magazine: the arsenal of CNC machining center
The source of the article: official account of WeChat: motor technology and application] welcome to add attention! Please indicate the source of the article.
Cost of material to fix hood less than $15 with tax.
I saved $390 using the plastic welder I used the mini-weld model 6 plastic welder
1.
Set up work area. No combustibles near plastic welder. Well ventilated area. Use caution when using the welder it is hot and can burn you. Plug in the welder and set the heat level to preheat. Put the welder in the stand that comes with kit.
2.
Take hood off mower.
3.
Clean plastic parts with soap and water.
4.
Put the plastic parts together using tape to hold in place until welded.
5.
Check the part for a symbol (to find out what kind of plastic I was working with). Set the heat level on welder matching the plastic I was welding.
6.
Working on the back side first. I started out making a v-groove where the break was. Tip: I used the side of the flat welding tip.
7.
Now I put the welding rod in the v-groove and apply the welder (heat) to the area. Melt the base material and the rod together. Don't work on any more than 2 inches at a time. TIP: Let your heat do the work for you.
8.
When you're done with the back side. Now start on the front side doing the same steps as above.
9.
When finished welding. On the front you should have a slight mound where the break was at.
10.
Now sand the weld down using rough sand paper. Then when almost flat go to a fine sand paper and smooth it out. Clean the hood.
11.
Paint the hood. It may take more than 1 coat. Check paint for details on drying times.
Sorry I forgot to grab my camera and take pictures for you.
THANK YOU