The drill bit fixture of one of my small drilling machines keeps falling off the spindle, how can I

The general drill chuck is connected with the spindle with the taper shank, and the friction force of the cone surface contact drives the drill bit to rotate, and the surface roughness and shape accuracy requirements of the taper shank and the taper sleeve are very high, if the surface of the taper shank and the taper sleeve is worn, there is oil pollution, and there are foreign bodies, the contact area and friction of the cone surface will be reduced, easy to fall off, and the serious will completely fail. In addition, the cone connection mainly bears the axial and rotational torque, if the accuracy of the drilling machine is low or the swing amplitude is large when the drill bit is drilling, it will also cause the taper handle to fall off, especially when the drill is drilled to the fast drilling, because the drill bit is stressed unevenly, it is easy to get stuck or cause the taper handle to fall off. So there are several ways to solve this problem:

1. Always check the surface of the taper handle and taper sleeve, and there can be no wear, burrs, oil stains, and foreign bodies.

2. When installing and disassembling the taper handle, you should not use a hammer to beat violently, and use special tools.

3. Ensure the accuracy of the drilling machine.

4. Do not exceed the scope of use of the drilling machine, such as using a large drill bit that exceeds the maximum limit diameter.

5. The workpiece should be clamped when drilling. The swing of the workpiece is easy to cause the drill bit to fall off or break, and it is also easy to cause safety accidents.

6. When drilling the workpiece quickly, the force should be gentle and slowly feed the knife to prevent it from being stuck.

The above is my experience in the work, I hope it will be helpful to you.

Change to a YC4102BZLQ supercharged.

It definitely works great.

But be sure to use Bayi's connecting rod.

1. The cone angle between the drill clamp cap and the spindle is not the same;

2. The grinding angle of the drill bit is unreasonable, and it should be ground to the highest in the middle and slightly lower at the two corners to form three tips.

I don't know if you can understand? I've tried to use as little jargon as possible.

Dear We are happy to answer for you, and the following are the results for your query; How to dismantle the main rental bulk body of the drilling machine quick change chuck: 1Turn off the power of the drilling machine and disconnect the power cord to ensure safe operation.

2.Check for fastening screws or pins on the chuck, and if so, remove them with the appropriate tools. 3.

Look for the set screws or nuts on the chuck body. They are usually located on the side or rear of the chuck body. Use an appropriate tool (such as a wrench or wrench) to loosen these screws or nuts.

4.After loosening all the set screws and nuts, you can try to remove the chuck body. Depending on the model, you may need to loosen the chuck by gently twisting it by hand or tapping it slightly.

5.Once the chuck is loose, you can remove the chuck body from the drill machine spindle. It may be necessary to twist or lift the chuck slightly and then lift it up.

6.After the chuck body has been successfully removed, the chuck can be maintained, cleaned or replaced.

The reason for the loose occlusion between the chuck and the spindle of the bench drilling machine is that the inner wall of the chuck and the spindle of the bench drill are uneven, or the inner wall of the chuck and the spindle of the bench drill are dirty.

Bench drilling machine, referred to as bench drill, is a small hole processing machine tool that is small in size, easy to operate, and usually installed on a special workbench. The drilling diameter of the bench drilling machine is generally less than 13 mm, and the maximum is not more than 16 mm. The spindle speed change is generally realized by changing the position of the V-belt on the tower pulley, and the spindle feed is manually operated.

1. Whether the inner wall of the chuck and the spindle of the bench drill are flat.

2. Whether there is dirt on the inner wall of the chuck and the spindle of the bench drill.

Solution: Bake the chuck with a blowtorch, (remember that the temperature should not be too high, it is easy to anneal) and install it firmly after cooling.

How to quickly take out the percussion drill bit when it is broken inside.

Hello pro 1If the drill bit exposes part of the outside of the workpiece, the broken drill bit can be taken out by welding. 2.

If the processing is not through-hole, in the case that the broken drill bit cannot be taken out with ordinary tools, it can be punched with electric pulse (also known as electric spark). 3.If the machining is a through hole, you can drill a small hole in the reverse position of the hole, and when you drill to the top of the broken drill bit, use a thin punch to eject the broken drill bit.

4.You can knock on the workpiece so that the drill bit is loose, and then you can knock it upside down and it will come out. But it will take some time.

5.Weld the threaded hole where the broken tap is located, then grind it flat, and re-drill the hole, although it is difficult, but you can slowly drill into it6Chisel a slotted groove on the section of the broken tap, and use a screwdriver to reverse it (that slotted groove is difficult to chisel, and even more difficult if the tap diameter is small) 7

Pry the above methods with a taper tool that is harder than the broken in, I hope it will help you.

The spindle return spring is broken or the spring earrings are broken, and the positioning pin is broken and falls off. It should be dismantled and excluded.

Before machining by the vertical drilling machine, the position of the workpiece on the workbench must be adjusted first, so that the center line of the processed hole is aligned with the tool axis. During machining, the workpiece is fixed, and the spindle rotates in the sleeve and is axially fed together with the sleeve. The table and headstock can be adjusted along the column guide to accommodate workpieces of different heights.

As a kind of drilling machine, vertical drilling machine is also a relatively common metal cutting machine tool, which has the characteristics of wide application and high precision. Suitable for batch processing.

Peculiarity. 1. It can realize two processing functions: vertical and horizontal milling.

2. The vertical spindle sleeve has two kinds of feeds: manual and micro-moving.

3. The workbench guide rail is polished after quenching.

4. The workbench is divided into three motorized feed modes: type A is three-way; Type C is unidirectional; Type D is bidirectional.

You can try EDM. EDM is actually to use the tool electrode and the workpiece between the discharge corrosion processing, due to the high temperature generated by the discharge moment can quickly melt the metal, the principle is that at the moment of discharge, the arc produces a sharp high temperature and accompanied by the change of pressure, so that the metal material at the point immediately melts, gasification, and splashes into the working fluid, condensed into solid small particles are taken away by the working fluid. At this time, the metal surface is electro-etched into a pit, so EDM can easily be corroded on any metal workpiece.

And it does not damage the original thread, and the tap can be removed with tweezers after being electrochemically eroded into pieces, which is convenient and fast.