Ningbo Hewcho

Generally speaking, the tolerance of inner bore can reach 0.02MM(or 0.03 if it is stainless steel or quick cutting steel products), and the roughness of inner bore can be as high as 0.8 through hook knife and step hole (except eccentric hole) through forming drill.  We can develop various parts and hardware non-standard turning parts according to the customer's drawing surface. Aluminum  CNC turning machine parts , precision non-standard turning parts, and lathe parts: It is produced by easy-cutting steel hexagonal rods. The tolerance of hexagonal rods and round rods selected by our factory is only -0.02MM. The hexagonal rods are fine-drawn, and the round rods are polished rods. Non-standard turning parts: It is completed in one time with an automatic lathe. The spherical surface precision is 0.01mm. This is also impossible for cold piers. The surface of the product can achieve the same mirror effect (not the effect of polishing, but only the effect of turning left is ...

Firstly, Cutting the amount of turning parts 1. Cutting speed VC Cutting speed has a complicated influence on surface roughness. Generally, there will be no debris tumor when cutting at low speed or at high speed, so the surface roughness value after processing is small. Higher cutting speed can also greatly improve productivity. For example, YT15 is used to cut 35 steel, and the critical cutting speed is v > 100m/min. 2. The surface roughness value will be reduced by appropriately reducing the feed amount f. 3. Generally speaking, the effect of cutting depth ap on the roughness of the machined surface is not obvious. However, when ap < 0.02~0.03mm, due to the influence of machining radius, extrusion, skidding and periodic cutting of the machined surface often occur, thus increasing the surface roughness. In order to reduce the surface roughness, the cutting depth should be selected according to the sharpness of cutting edge grinding. Secondly, Machining tool parameters for turni...

Before processing the  machining parts , we should draw a drawing, which marks the processing requirements of the machining parts, but it can not guarantee that every part of the processing can reach the standard, so it will be accepted after the test. So, do you know what the acceptance of  machining parts  includes?  Specifically, this includes acceptance requirements and acceptance procedures: 1. Acceptance requirements (1) Appearance check A: Check whether the finish of machining parts meets the requirements of drawings. B: Check whether the surface of the machining parts is damaged, rusty, bruised, and whether the thread shape and angle are correct. C: If the above problems are found, detailed records should be kept for reference. (2) Quantity acceptance A: Based on the supply contract and processing voucher, the material, specifications, and quantity of the processed parts should be checked strictly against the drawings and should be checked one by one. B: Do a...

In the field of  machining parts  processing, the purchase of suitable raw materials is the basis. Otherwise, it will not be able to produce good  machining parts  if we buy inferior parts to the process. Do you know how to purchase  machining parts ? Today, we will share with you the procurement skills of  machining parts ! For enterprises, the procurement of spare parts is also a kind of scientific knowledge, the procurement of goods will directly affect the quality and efficiency of enterprise products. 1. the supply units must have ISO9000 certification to provide the required items. 2. the quality guarantee list provided by the quality inspection department must be provided. 3. Quality assurance of raw material for goods. 4. The demanding party must examine and authenticated the supplier's management system and incorporate it into the list of qualified suppliers in the enterprise, and can use the supplies provided by the supplier. The above is the most...

The precision of boring machining is very high, it can reach IT8~IT7, and the aperture can be controlled within the dimensional accuracy of 0.01MM. For precision boring, the machining accuracy can reach TT7- IT6, and the surface quality is good. For general boring, the value of surface roughness is Ra 1.6 to 0.8μm. Let's take a look at how to process boring.   The step of boring hole and some matters needing attention Install boring tool It is very important to install the boring tool, especially for work adjustment which based on eccentric principle. After installing the boring tool, we must pay attention to observe whether the plane on the blade edge is on the same level with the feed direction of the head of boring tool? Installing on the same level can ensure that several cutting edges are at normal machining cutting angles. Test the boring with boring tool The boring tool is adjusted according to the requirements of the process manufacturing to reserve ...

Now the industry of machined parts processing has developed quickly. Generally speaking, the methods of  machined parts  processing are more than one. Do you know how many kinds of machining are there? Today let  HEWCHO   share with you! 1. Mechanical parts are formed in many forms: (1): Thermal processing: casting, forging, welding, etc. (2): Cold processing: lathing, planing, milling, punching, pressing, riveting, etc. 2. Cold processing also has many forms:  (1): Sheet metal parts: punching, pressing, riveting, etc. (2): Integrated parts: lathing, planing and milling, etc. 3. The general machining is the processing of the integrated parts. The forms are as follows: (1): Workpiece rotary machining: lathing. (2): Tool rotary machining: drilling, milling, boring, plane grinding. (3): Rotary machining of both workpiece and tool: inner round grinding, round grinding, rolling cutting. (4): Rotary machining of neither workpiece nor tool: planing, inserting and pull...