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Summary of tips for selecting spring collet tools

2020-06-06 01:06

Summary of tips for selecting spring collet tools:

The important position of tool selection in machining is self-evident. Learning to choose a tool can help you work handy. LONNZ has 16 years of production experience in spring collets, tool holders and other tooling fixtures, personalized custom high-quality spring steel, 36 full-process, nine quality inspections, thread grinding, standard products are in stock, non-standard The products can be customized, CNC compound integrated machining processing, self-built salt bath heat treatment workshop, the inner hole of the spring collet has round holes, square, hexagonal, special-shaped, spring steel, cemented carbide, and standard concentric, special-shaped eccentric (collet), etc., Widely used in various CNC machining centers, CNC machine tools, automatic lathes, instrument machine tools and various milling machines at home and abroad.

CNC lathe collets

CNC lathe collets

The following LONNZ summarizes the selection techniques of spring collet tools for you, I hope to help you:

1. The tool should be paid more attention and attention during processing:

Any tool stop working, it means that production has stopped. But it does not mean that every tool has the same important position. The tool with the longest cutting time has a greater impact on the production cycle, so under the same premise, more attention should be paid to this tool. In addition, we should also pay attention to the processing of key components and the tools with the strictest tolerance requirements. In addition, tools with relatively poor chip control, such as drills, grooving tools, and threading tools , should also be focused on. Poor chip control can cause downtime.

2. The spring collet tool should match with the machine tool:

The tool is divided into a right-hand knife and left-hand knife, so it is very important to choose the right tool. Generally, right-hand tools are suitable for counterclockwise (CCW) machine tools (as viewed in the direction of the spindle); left-hand tools are suitable for clockwise (CW) machine tools. If you have several lathes, some hold left-hand tools, and others are compatible with left-hand tools, then choose left-hand tools.

For milling, people generally tend to choose more versatile tools. But despite the larger processing range covered by this type of tool, you will immediately lose the tool rigidity, increase the tool deflection, reduce the cutting parameters, and more likely to cause processing vibration . In addition, the manipulator of the machine tool to change the tool also has restrictions on the size and weight of the tool. If you buy a machine tool with cooling through a hole in the spindle, please also select a tool with cooling through the hole.

3. The spring collet tool should be matched with the processed material:

Carbon steel is the most common material to be processed in machining, so most tools are based on an optimized carbon steel machining design. The blade grade should be selected according to the material to be processed. Tool manufacturers provide a range of tool bodies and matching inserts for processing non-ferrous materials such as high-temperature alloys, titanium alloys, aluminum, composite materials, plastics, and pure metals. When you need to process the above materials, please choose a tool with matching material. Most brands have various series of knives, indicating what materials are suitable for processing. For example, DaElement's 3PP series is mainly used to process aluminum alloy, 86P series is specially used to process stainless steel, and 6P series is specially used to process high-hardness steel.

4. The tool specifications should be adapted:

A common mistake is that the selected turning tool size is too small and the milling tool size is too large. Large-size turning tools have better rigidity; large-size milling cutters are not only more expensive but also have longer cutting times. In general , the price of large-size tools is higher than that of small-size tools.

5. Choose a replaceable blade type or re-sharpening tool:

The principle to follow is simple: avoid grinding tools as much as possible. Except for a few drill bits and face milling cutters, as far as conditions permit, try to choose a replaceable blade type or a replaceable head type tool. This will save you labor costs and at the same time obtain a stable processing effect.

6. Tool material and brand:

The choice of tool materials and grades is closely related to the performance of the processed materials, the maximum speed of the machine tool, and the feed rate. Choose a more general tool grade for the material group being processed, usually a coated alloy grade. Refer to the "Recommended Chart for Grade Application" provided by the tool supplier. In practical applications, a common mistake is to replace the similar material grades of other tool manufacturers to try to solve the problem of tool life. If your existing tool is not ideal, then re-selecting a brand from another manufacturer close to it is likely to bring similar results. To solve the problem, the cause of tool failure must be clarified.

7. Power requirements:

The guiding principle is to make the best use of everything. If you buy a milling machine with a power of 20hp, then, when the workpiece and fixture allow, select the appropriate tool and processing parameters so that it can achieve 80% of the power of the machine tool. Pay special attention to the power/tachometer in the machine tool user manual, and select the tool that can achieve better cutting applications according to the effective power range of the machine tool power.

8. The number of cutting edges:

The principle is, more is better. Buying a turning tool with twice the cutting edge does not mean paying twice the cost. In the past ten years, the advanced design has doubled the number of cutting edges for grooving cutters, cutting blades, and some milling blades. It is not uncommon to replace the original milling cutter with only four cutting edges with an advanced milling cutter with 16 cutting edges. The increase in the number of effective cutting edges also directly affects the table feed and productivity.

9. Choose an integral tool or a modular tool:

Small size cutters are more suitable for integral design; large size cutters are more suitable for modular design. For large-sized tools, when the tool fails, users often want to replace the small and inexpensive parts to regain the new tool. This is especially true for grooving and boring tools.

10. Choose a single tool or multi-function tool:

The smaller the workpiece is, the more suitable the composite tool is. For example, a multi-function tool can be combined with drilling, turning, inner hole processing, threading, and chamfering. Of course, the more complex the workpiece, the more suitable for multi-function tools. The machine can bring you benefits only when cutting, not when it is down.

11. Choose standard tool or non-standard special tool:

With the popularization of CNC machining centers (CNC), it is generally believed that programming can be used to achieve the shape of the workpiece, rather than relying on the tool, so non-standard special tools are no longer needed. In fact, today , non-standard tools still account for 15% of total tool sales. why? The use of special tools can meet the requirements of precise workpiece size, reduce the process, and shorten the processing cycle. For mass production, non-standard special tools can shorten the processing cycle and reduce costs.

12. Chip control:

Remember, your purpose is to machine out the workpiece instead of chips, but the chips can clearly reflect the cutting state of the tool. In general, people have prejudices on swarf, because most people have not received training in interpreting swarf. Remember the following principles: good chips will not destroy the processing, bad chips are the opposite. Most of the inserts are designed with chip breakers, and the chip breakers are designed according to the feed rate, whether it is light cutting precision machining or heavy cutting rough machining . The smaller the chip, the harder it is to break. For difficult materials, chip control is a big problem. Although the material to be processed cannot be replaced, the tool can be updated to adjust the cutting speed, feed rate, cutting depth , tool nose radius, etc. Optimizing chips and optimizing machining is the result of a comprehensive choice.

13. Programming:

Faced with tools, workpieces, and CNC machining tools, tool paths are often defined. The ideal situation is to understand the basic machine code and have an advanced CAM software package. The tool path must take into account the tool characteristics, such as ramping angle , rotation direction, feed, cutting speed, etc. Each tool has a corresponding programming technology to shorten the machining cycle, improve chip, and reduce cutting force. A good CAM software package can save labor and increase productivity.

14. Choose innovative tools or conventional mature tools:

At the current rate of development of advanced technology, the productivity of cutting tools can double every 10 years. Compared with the cutting parameters recommended by the tool 10 years ago, you will find that today's tools can double the machining efficiency, but the cutting power is reduced by 30%. The new tool alloy matrix is stronger and tougher, enabling higher cutting speeds and lower cutting forces. Chip breakers and grades have lower application specificity and wider versatility. At the same time, modern tools also increase versatility and modularity, which together reduce inventory and expand tool applications. The development of cutting tools has also driven new product design and machining concepts, such as overlord cutters with large turning and grooving functions, large feed milling cutters, and promoted high-speed machining, minimal lubrication and cooling (MQL) machining and hard turning technology. Based on the above factors and other reasons, you also need to fol low up on the most preferred processing method and learn the latest advanced tool technology, otherwise, there is a danger of falling behind.

LONNZ collets

15. Spring collet tool price:

Although the price of knives is important, it is not as important as the production costs paid by knives. Although knives have their corresponding prices, the true value of knives lies in the duties performed for productivity. Generally, the tool with the lowest price is the tool with the highest production cost. The price of cutting tools only accounts for 3% of the cost of parts. So please pay attention to the productivity of the tool, not its purchase price. Longzhouli Price Advantage: We are a professional manufacturer, and all products are sold at factory ex-factory prices.

LONNZ collets have undergone three salt bath heat treatments, 36 full processes, nine quality inspections, screw grinding and molding, standard products are in stock, non-standard products can be customized, CNC composite integrated machining processing, chucks can be provided Auxiliary design and one-stop procurement of peripheral accessories, looking forward to cooperating with you!

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