Numerical control drilling machine for punching surface of mechanical part

Abstract

The invention discloses a numerical control drilling machine for punching the surface of a mechanical part. The numerical control drilling machine comprises drilling machine bases, the tops of the drilling machine bases are fixedly sleeved with fastening connecting frames, the tops of the fastening connecting frames are fixedly sleeved with connecting supporting columns, and the middles of the outer surfaces of the connecting supporting columns are fixedly sleeved with mounting fixing frames. A drilling tool sliding frame is fixedly installed on one sides of the mounting fixing frames, the middle of the drilling tool sliding frame is fixedly sleeved with a sliding inner rack, the middle of the outer surface of the sliding inner rack is movably sleeved with a sliding connecting box, and a machining table is fixedly installed on one side of the drilling machine bases. When a part is drilled by the numerical control drilling machine, clamping force is improved, so that the mechanical part is fixed, clamping arm pressing feet are contracted while the clamping force is improved, the inner surfaces of the clamping arm pressing feet make friction contact with the outer surfaces of drilling tools, the rotating speed of the drilling tools is reduced through friction force, centripetal force of the drilling tools is reduced, the drilling tools are prevented from loosening, the phenomena of slipping and breaking of the drilling tools are avoided, and potential safety hazards are reduced.

Description

technical field [0001] The invention relates to the technical field of numerical control drilling machines, more specifically, the invention relates to a numerical control drilling machine for drilling holes on the surface of mechanical parts. Background technique [0002] CNC drilling machine is a numerically controlled hole processing machine tool mainly for drilling. Due to the development of machining centers, most CNC drilling machines have been replaced by machining centers, but some parts with drilling as the main processing process still need to use CNC drilling machines. Processing, such as processing printed circuit boards, etc. [0003] However, when the existing numerical control drilling machine drills holes on the surface of mechanical parts, the drill in the drilling machine has a good fixed-point drilling force and stable rotation force, and drilling under the effect of a strong drilling force can make the The metal powder produced by the parts is scattered ...

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Problems solved by technology

[0003] However, when the existing numerical control drilling machine drills holes on the surface of mechanical parts, the drill in the drilling machine has a good fixed-point drilling force and stable rotation force, and drilling under the effect of a strong drilling force can make the The metal powder produced by the parts is scattered in the form of particle atomization, and thus adheres to the various components in the CNC drilling machine, which can easily cause the insulation resistance between components to drop, resulting in failure or even damage to the components;

[0004] In addition, during the use of the existing drill bit, its rotation will generate a strong centripetal force, so that it can quickly and effectively drill parts, and when the centripetal force generated by drilling is greater than the clamping force of the drill bit, this It can cause the drill bit to loosen, causing the drill bit to slip and break. Under the action of centripetal force, the drill bit fragments will accidentally injure the staff and cause safety hazards;

[0005] Finally, when the clamp arm presser foot of the existing CNC drilling machine is working with the drill bit, when it is subjected to the friction and vibration force between the drill hole and the parts, the contact surface of the presser foot cannot be horizontal and vertical to the parts, thus Make it shake, cause broken drill and partial hole in the drilling, which greatly affects the efficiency of drilling, and partial hole will easily cause the drilling accuracy of parts to decrease, which is less practical

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