CN113102802A

CN113102802A - Numerical control drilling machine for surface punching of mechanical parts

Info

Publication number: CN113102802A
Application number: CN202110352397.0A
Authority: CN
Inventors: 张建星
Original assignee: Wenxian Wanxing Hydraulic Components Co ltd
Current assignee: Wenxian Wanxing Hydraulic Components Co ltd
Priority date: 2021-03-31
Filing date: 2021-03-31
Publication date: 2021-07-13

Abstract

The invention discloses a numerical control drilling machine for punching the surface of a mechanical part, which comprises a drilling machine seat, wherein a fastening connection frame is fixedly sleeved at the top of the drilling machine seat, a connection support column is fixedly sleeved at the top of the fastening connection frame, a mounting fixing frame is fixedly sleeved at the middle part of the outer surface of the connection support column, a drilling tool sliding frame is fixedly mounted at one side of the mounting fixing frame, a sliding inner rack is fixedly sleeved at the middle part of the drilling tool sliding frame, a sliding connection box is movably sleeved at the middle part of the outer surface of the sliding inner rack, and a processing table is fixedly mounted at one side of. When the clamping arm clamping device is used for drilling a part, the clamping force is improved, so that the mechanical part is fixed, the clamping arm clamping foot is contracted while the clamping force is improved, the inner surface of the clamping arm clamping foot is in mutual friction contact with the outer surface of the drill cutter, the rotating speed of the drill cutter is reduced by the friction force, the centripetal force of the drill cutter is reduced, the drill cutter is prevented from loosening, the phenomena of wire sliding and breaking of the drill cutter are avoided, and the potential safety hazard of the drill cutter is reduced.

Description

Numerical control drilling machine for surface punching of mechanical parts

Technical Field

The invention relates to the technical field of numerical control drilling machines, in particular to a numerical control drilling machine for drilling the surface of a mechanical part.

Background

The numerically controlled drilling machine is a numerically controlled hole processing machine tool mainly based on drilling, most of numerically controlled drilling machines are replaced by machining centers due to the development of the machining centers, but some parts mainly processed by drilling still need to be processed by the numerically controlled drilling machine, such as printed circuit boards.

However, when the existing numerical control drilling machine drills the surface of a mechanical part, a drill bit in the drilling machine has good fixed point drilling force and stable rotating force, and drills under the action of strong drilling force, metal powder generated by the part can be scattered in a particle atomization mode, so that the metal powder is attached to each component in the numerical control drilling machine, insulation resistance among the components is easy to reduce, and faults occur or even the components are damaged;

in addition, when the existing drill cutter is used, the rotation of the existing drill cutter can generate a strong centripetal force, so that the existing drill cutter can quickly and effectively drill parts, and when the centripetal force generated by drilling is greater than the clamping force of the drill cutter, the drill cutter can be loosened, so that the drill cutter has the phenomena of thread slipping, breaking and the like, and the drill cutter can cause the fragments of the drill cutter to accidentally injure workers under the action of the centripetal force, so that potential safety hazards are generated;

at last, when the clamp arm presser foot in the existing numerical control drilling machine is used for drilling a drill cutter, when the clamp arm presser foot is subjected to frictional vibration force between a drill hole and a part, the contact surface of the presser foot cannot be horizontal and vertical to the part, so that the presser foot is shaken, broken drill and eccentric hole are generated in the drill hole, the drilling efficiency of the part is greatly influenced, the drilling precision of the part is easily reduced due to the eccentric hole, and the practicability is low.

Disclosure of Invention

In order to overcome the above defects in the prior art, embodiments of the present invention provide a numerically controlled drilling machine for drilling on the surface of a mechanical part, wherein when the part is clamped and drilled, the extruded anti-slip blocks on two sides are used for connection and clamping, so as to improve the clamping stability, and in addition, the anti-slip threads on the outer surface of the extruded anti-slip blocks are provided, so as to improve the relative friction between the part and the outer surface of the part, reduce the vibration force generated by drilling, prevent the part from shaking and deviating, and improve the practicability of the part, so as to solve the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a numerical control drilling machine for punching the surface of mechanical parts comprises a drilling bed, wherein a fastening linking frame is fixedly installed on a top fixing sleeve of the drilling bed, a connecting support column is fixedly sleeved at the top of the fastening linking frame, an installation fixing frame is fixedly installed at the middle part of the outer surface of the connecting support column, a drilling tool sliding frame is fixedly installed on one side of the installation fixing frame, a sliding inner rack is fixedly sleeved at the middle part of the drilling tool sliding frame, a sliding connecting box is movably sleeved at the middle part of the outer surface of the sliding inner rack, a machining table is fixedly installed on one side of the drilling bed, a protection component is movably sleeved at the outer surface of the machining table, a filter screen plate is fixedly installed at the middle part of the outer surface of the machining table, a drilling tool connecting seat is fixedly installed at the bottom of the sliding connecting box, adjusting clamping arm components are fixedly installed on the left side and the, the other side of the adjusting clamping arm component is movably connected with a clamping connecting rod, the bottom of the clamping connecting rod is fixedly connected with a clamping arm presser foot, and the bottom of one side of the clamping arm presser foot is fixedly provided with a limiting fastening component;

the protection assembly comprises a magnetic protection box, a master control power supply is fixedly installed at the bottom of an inner cavity of the magnetic protection box, an electric telescopic rod is fixedly installed in the middle of the bottom surface of the inner cavity of the magnetic protection box, a magnetic adsorption assembly is fixedly connected to the top of the electric telescopic rod, a jacking groove is formed in the top of the magnetic protection box, and a conductive conveyor is fixedly installed on one side of the bottom of the inner cavity of the magnetic protection box;

the adjustable clamp arm assembly is characterized in that a first reset elastic piece is fixedly mounted on one side of an inner cavity of the adjustable clamp arm assembly, a sliding connecting groove is formed in the middle of one side of the adjustable clamp arm assembly, a rotating middle shaft is movably connected to the upper surface and the lower surface of the inner wall of the adjustable clamp arm assembly, and a rotating gear is movably sleeved on the outer surface of the rotating middle shaft.

In a preferred embodiment, the magnetic adsorption component comprises an outer sleeve plate, an electromagnetic plate is fixedly mounted inside the outer sleeve plate, a power transmission main plate is fixedly mounted on one side of an inner cavity of the outer sleeve plate, a shunt electric plate is fixedly connected to the other side of the power transmission main plate, a shunt electric wire is fixedly connected to the outer surface of the other side of the shunt electric plate, a conductive bus is fixedly connected to the bottom of the power transmission main plate, and a bus hole groove is formed in one side of the bottom of the outer sleeve plate.

In a preferred embodiment, a sliding rack is fixedly arranged in the middle of the inner cavity of the limiting fastening assembly, inner sliding teeth are fixedly arranged on the upper surface and the lower surface of the inner cavity of the sliding tooth rack, sliding grooves are formed in the upper surface and the lower surface of the sliding tooth rack, a sliding block is movably sleeved on one side of the inner cavity of the sliding gear rack, the upper surface and the lower surface of the sliding block are fixedly connected with a sliding connecting rod, the upper surface and the lower surface of one side of the inner cavity of the limiting fastening assembly are both fixedly provided with an elastic frame, one side of the elastic frame is provided with a pulling groove, the other side of the sliding connecting rod is fixedly connected with a second reset elastic piece through a pulling groove, one side of the second reset elastic piece is fixedly connected with an elastic connecting rod, the other side of the elastic connecting rod is fixedly connected with an ejection block, the other side of the ejection block is fixedly sleeved with an extrusion antiskid block, and the upper surface and the lower surface of one side of the limiting fastening assembly are both provided with extrusion holes.

In a preferred embodiment, the filter screen plate is fixedly sleeved on the bottom of the drill cutter, the distance between the top of the filter screen plate and the bottom of the drill cutter is five centimeters to six centimeters, and the diameter of the mesh on the outer surface of the filter screen plate is five millimeters to six millimeters.

In a preferred embodiment, the number of the guard assemblies is two, the two guard assemblies are fixedly sleeved on the left side and the right side of the filter screen plate respectively, the horizontal width of the guard assemblies is matched with that of the filter screen plate, and one side of the filter screen plate is two centimeters to three centimeters away from one side of the guard assemblies.

In a preferred embodiment, the horizontal length of the jacking groove is matched with the horizontal length of the magnetic adsorption component, the outer surface of the magnetic adsorption component is made of a cotton linen material, and the electromagnetic plate is made of a magnet material.

In a preferred embodiment, the output end of the shunt wire is electrically connected with the input end of the electromagnetic plate, the electromagnetic plate is fixedly sleeved inside the electromagnetic plate, and the bottom of the conductive bus is electrically connected with the output end of the conductive conveyor through the bus hole slot.

In a preferred embodiment, one end of the clamping connecting rod is movably sleeved inside the adjusting clamping arm assembly through a sliding connecting groove, the clamping connecting rod is of a special-shaped semi-circular arc structure, the other side of the first reset elastic piece is fixedly connected with one side of the clamping connecting rod, the clamping connecting rod is movably sleeved between the two rotating gears, concave tooth grooves are formed in the upper surface and the lower surface of the clamping connecting rod, and the shape and the size of each concave tooth groove are matched with the teeth on the outer surfaces of the rotating gears.

In a preferred embodiment, one side of the elastic frame is provided with a telescopic groove, the horizontal width of the telescopic groove is matched with the horizontal width of the elastic connecting rod, the outer surface of the extruded anti-skid block is integrally formed with an anti-skid thread, the position of the extruded hole corresponds to the horizontal position of the extruded anti-skid block, and the sliding block is movably sleeved on the outer surface of the inner sliding tooth.

Compared with the prior art, the invention has the beneficial effects that:

1. when the invention drills a part, the drill bit rotates to drive the drill bit connecting seat to rotate, and the rotation generates centripetal force to drive the rotating central shaft and the rotating gear which are arranged inside the adjusting clamping arm component to rotate simultaneously, the rotation can drive the clamping connecting rod to slide, the semi-circular structure of the clamping connecting rod can quickly rotate and slide out through the sliding connecting groove, so as to drive the clamping arm presser foot and the limiting fastening component to contract inwards, thereby the surface of the mechanical part is clamped by the clamping arm presser foot and the limiting fastening component, the clamping force is improved, the mechanical part is fixed, the clamping arm presser foot contracts while the clamping force is improved, the inner surface of the clamping arm presser foot is in mutual friction contact with the outer surface of the drill bit, the rotating speed of the drill bit is reduced by the friction force, the centripetal force of the clamping arm presser foot is reduced, the drill bit is prevented from loosening, and the phenomena of drill bit wire slipping and breaking are avoided, the potential safety hazard is reduced;

2. when the parts are drilled, the conductive conveyor guides electricity into the electromagnetic plate through the conductive bus, the power transmission main board, the shunt electric wire and the like while the magnetic adsorption component rises, so that the electromagnetic plate is electrified, the conductive conveyor has stronger magnetic attraction, and as the mechanical parts are made of metal materials, metal powder generated by drilling can be adsorbed on the outer surface of the outer sleeve plate by the electromagnetic plate, so that the metal powder is prevented from being dispersed in a particle atomization mode under stress, and is attached to each component in the numerical control drilling machine, the insulation resistance among the components is easy to reduce, the safety and the insulation performance of the components are greatly improved, the conductive conveyor not only can adsorb the metal powder, but also can provide stability when the parts are clamped, and the parts are subjected to the relative balance force of the electromagnetic force by utilizing the electromagnetic force on two sides, thereby achieving the stable effect;

3. when the component is clamped and drilled, the components in the limiting fastening component are influenced by inertia, so that the sliding block slides forwards in the sliding rack, the sliding connecting rods on the upper surface and the lower surface are driven to slide in the same direction while sliding, the second reset elastic piece, the elastic connecting rods, the ejection blocks and the extrusion anti-skid blocks slide forwards and extend out of the extrusion holes, the extrusion anti-skid blocks are connected to the left side and the right side of the component through the extrusion holes, the extrusion anti-skid blocks on the two sides are used for connecting and clamping, the clamping stability is improved, the anti-skid threads on the outer surfaces of the extrusion anti-skid blocks are arranged, the relative friction force between the anti-skid threads and the outer surfaces of the component can be improved, the vibration force generated by drilling is reduced, the component is prevented from shaking and deviating, and the practicability of the component is improved.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged schematic view of FIG. 1 at A according to the present invention;

FIG. 3 is a schematic view of the internal structure of the shield assembly of the present invention;

FIG. 4 is a schematic diagram of the internal structure of the magnetic attraction component according to the present invention;

FIG. 5 is an enlarged view of the structure at B of FIG. 4 according to the present invention;

FIG. 6 is a schematic view of the internal structure of the adjustable clamp arm assembly of the present invention;

FIG. 7 is a schematic view of the internal structure of the spacing fastener assembly of the present invention;

fig. 8 is an overall circuit block diagram of the present invention.

The reference signs are: 1. a drill base; 2. fastening the connecting frame; 3. connecting the supporting columns; 4. mounting a fixed frame; 5. a drill carriage; 6. sliding the inner rack; 7. a sliding connection box; 8. a processing table; 9. a guard assembly; 10. a filter screen plate; 11. a drill bit connecting seat; 12. drilling a cutter; 13. adjusting the clamping arm assembly; 14. clamping the connecting rod; 15. a clamp arm presser foot; 16. a limiting fastening component; 91. a magnetic protective box; 92. a master control power supply; 93. an electric telescopic rod; 94. a magnetic adsorption component; 95. jacking a groove; 96. a conductive conveyor; 941. an outer race plate; 942. an electromagnetic plate; 943. a power transmission main board; 944. a shunt electrode plate; 945. shunting wires; 946. a conductive bus; 947. a bus slot; 131. a first return spring; 132. a sliding connecting groove; 133. rotating the middle shaft; 134. a rotating gear; 161. a sliding rack; 162. an inner sliding tooth; 163. a chute; 164. a slider; 165. a sliding connecting rod; 166. an elastic frame; 167. pulling the groove; 168. a second return spring; 169. an elastic connecting rod; 1691. ejecting a block; 1692. extruding the anti-skid blocks; 1693. and extruding the hole.

Detailed Description

The numerical control drilling machine for surface drilling of mechanical parts shown in the attached drawings 1 and 8 comprises a drilling machine base 1, wherein a fastening connection frame 2 is fixedly sleeved at the top of the drilling machine base 1, a connection support column 3 is fixedly sleeved at the top of the fastening connection frame 2, an installation fixing frame 4 is fixedly sleeved at the middle of the outer surface of the connection support column 3, a drilling tool sliding frame 5 is fixedly installed at one side of the installation fixing frame 4, a sliding inner rack 6 is fixedly sleeved at the middle of the drilling tool sliding frame 5, a sliding connection box 7 is movably sleeved at the middle of the outer surface of the sliding inner rack 6, a processing table 8 is fixedly installed at one side of the drilling machine base 1, a protection component 9 is movably sleeved at the outer surface of the processing table 8, a filter screen plate 10 is fixedly sleeved at the middle of the outer surface of the processing table 8, and a drilling tool connecting seat 11 is fixedly installed, the drill jig comprises a drill cutter connecting seat 11, a drill cutter, clamping arms, clamping connecting rods, clamping arm presser feet 15 and a limiting fastening assembly 16, wherein the left side and the right side of the drill cutter connecting seat 11 are both fixedly provided with adjusting clamping arm assemblies 13, the bottom of the drill cutter connecting seat 11 is fixedly sleeved with the drill cutter 12, the other side of each adjusting clamping arm assembly 13 is movably connected with the clamping connecting rod 14, the bottom of each clamping connecting rod 14 is fixedly connected with the clamping arm presser foot 15, and the;

the protection assembly 9 comprises a magnetic protection box 91, a master control power supply 92 is fixedly installed at the bottom of an inner cavity of the magnetic protection box 91, an electric telescopic rod 93 is fixedly installed in the middle of the bottom surface of the inner cavity of the magnetic protection box 91, a magnetic adsorption assembly 94 is fixedly connected to the top of the electric telescopic rod 93, a jacking groove 95 is formed in the top of the magnetic protection box 91, and a conductive conveyor 96 is fixedly installed on one side of the bottom of the inner cavity of the magnetic protection box 91;

one side fixed mounting who adjusts the arm lock subassembly 13 inner chamber has first elastic component 131 that resets, sliding connection groove 132 has been seted up at the middle part of adjusting arm lock subassembly 13 one side, the equal swing joint in upper and lower two sides of adjusting arm lock subassembly 13 inner wall rotates axis 133, the surface movable sleeve that rotates axis 133 is equipped with rotating gear 134, magnetic adsorption subassembly 94 is including outer sleeve plate 941, the inside fixed mounting of outer sleeve plate 941 has electromagnetic plate 942, one side fixed mounting of outer sleeve plate 941 inner chamber has total board 943 of transmitting electricity, the opposite side fixed connection of total board 943 of transmitting electricity has reposition of redundant personnel electroplax 944, the surface fixed connection of reposition of personnel electroplax 944 opposite side has reposition of redundant personnel electric wire 945, total board 943's of transmitting electricity bottom fixedly connected with electrically conductive bus 946, bus hole groove 947 has been seted up to one side of outer sleeve plate 941 bottom, the middle part fixed mounting of spacing fastening subassembly 16 inner chamber has smooth, inner sliding teeth 162 are fixedly installed on the upper surface and the lower surface of an inner cavity of the sliding tooth frame 161, sliding grooves 163 are formed on the upper surface and the lower surface of the sliding tooth frame 161, a sliding block 164 is movably sleeved on one side of the inner cavity of the sliding tooth frame 161, a sliding connecting rod 165 is fixedly connected to the upper surface and the lower surface of the sliding block 164, an elastic frame 166 is fixedly installed on the upper surface and the lower surface of one side of the inner cavity of the limiting fastening assembly 16, a pulling groove 167 is formed in one side of the elastic frame 166, the other side of the sliding connecting rod 165 is fixedly connected with a second reset elastic piece 168 through the pulling groove 167, an elastic connecting rod 169 is fixedly connected to one side of the second reset elastic piece 168, an ejection block 1691 is fixedly connected to the other side of the elastic connecting rod 169, an extrusion anti-skid block 1692 is fixedly installed on the other side of the ejection block 1691, the filter screen plate 10 is fixedly sleeved at the bottom of the drill cutter 12, the distance between the top of the filter screen plate 10 and the bottom of the drill cutter 12 is five centimeters to six centimeters, the diameter of meshes on the outer surface of the filter screen plate 10 is five millimeters to six millimeters, the number of the protection components 9 is two, the two protection components 9 are fixedly sleeved at the left side and the right side of the filter screen plate 10 respectively, the horizontal width of each protection component 9 is matched with the horizontal width of the filter screen plate 10, the distance between one side of the filter screen plate 10 and one side of each protection component 9 is two centimeters to three centimeters, the horizontal length formed by the jacking groove 95 is matched with the horizontal length of the magnetic adsorption component 94, the outer surface of the magnetic adsorption component 94 is made of a cotton-linen material, the electromagnetic plate 942 is made of a magnet material, the output end of the shunt wire 945 is electrically connected with the input end of the electromagnetic plate 942, and the electromagnetic plate 942 is fixedly sleeved with an, the bottom of the conductive bus 946 is electrically connected with the output end of the conductive conveyor 96 through a bus hole groove 947, one end of the clamping connecting rod 14 is movably sleeved inside the adjusting clamping arm assembly 13 through a sliding connecting groove 132, the clamping connecting rod 14 is of a special-shaped semi-circular structure, the other side of the first reset elastic piece 131 is fixedly connected with one side of the clamping connecting rod 14, the clamping connecting rod 14 is movably sleeved between the two rotating gears 134, the upper and lower surfaces of the clamping connecting rod 14 are uniformly formed with concave tooth grooves, the shape and size of the concave tooth grooves are matched with the teeth on the outer surfaces of the rotating gears 134, one side of the elastic frame 166 is provided with a telescopic groove, the horizontal width of the telescopic groove is matched with the horizontal width of the elastic connecting rod 169, the outer surface of the extrusion anti-skid block 1692 is integrally formed with anti-skid threads, the position of the extrusion hole 1693 corresponds to the horizontal position of the extrusion anti-, the sliding block 164 is movably sleeved on the outer surface of the inner sliding tooth 162.

The working principle is as follows: when the surface of a mechanical part needs to be drilled, the part is firstly placed on the surface of a machining table 8, then a worker controls the sliding connection box 7 to start through an external power supply, so that the sliding connection box 7 slides on the drill bit sliding frame 5 and the sliding inner rack 6, the sliding inner rack 6 is arranged, the sliding connection box 7 can quickly and effectively slide left and right by utilizing sliding teeth in the sliding inner rack 6, the sliding connection box is not damaged by abrasion generated by sliding, the damage generated when the sliding connection box 7 slides can be greatly reduced, the sliding efficiency and the machining efficiency of the part are improved, when the drill bit 12 drills the part, the drill bit 12 rotates to drive the drill bit connecting seat 11 to rotate, and centripetal force generated by rotation can drive the rotating center shaft 133 and the rotating gear 134 in the adjusting clamp arm assembly 13 to simultaneously rotate, the rotation can drive the clamping connecting rod 14 to slide, the semi-circular structure of the clamping connecting rod 14 can be utilized to quickly rotate and slide out through the sliding connecting groove 132, so that the clamping arm presser foot 15 and the limiting fastening assembly 16 are driven to contract inwards, the surface of a mechanical part is clamped by the clamping arm presser foot 15 and the limiting fastening assembly 16, the clamping force is improved, the mechanical part is fixed, the clamping arm presser foot 15 is utilized to contract while the clamping force is improved, the inner surface of the clamping arm presser foot is in mutual friction contact with the outer surface of the drill 12, the rotating speed of the drill 12 is reduced by the friction force, the centripetal force of the drill is reduced, the drill is prevented from loosening, the phenomena of drill wire slipping and breakage are avoided, and the potential safety hazard of the drill is reduced; then, while drilling holes on the surfaces of the parts, the worker controls the main control power supply 92 to be powered on through an external power supply, so that the main control power supply 92 is electrically connected with the conductive conveyor 96 and the electric telescopic rod 93, the electric telescopic rod 93 and the conductive conveyor 96 can be controlled to work, after the power supply is powered on, the electric telescopic rod 93 is used for driving the magnetic adsorption component 94 to ascend, so that the magnetic adsorption component rises to the outer surface of the processing table 8 through the jacking groove 95, then the adsorption protection is carried out on the left side and the right side of the outer surface of the processing table 8, and when the magnetic adsorption component 94 rises, the conductive conveyor 96 guides electricity into the electromagnetic plate 942 through the conductive bus 946, the power transmission main plate 943, the shunt electric plate 944, the shunt electric wire 945 and the like, so that the electromagnetic plate 942 is powered on, and has strong magnetic attraction force, because the mechanical parts are mostly made of metal, metal powder generated by drilling holes can be adsorbed to the outer surface of the outer, the device has the advantages that the metal powder is prevented from being stressed and scattered in a particle atomization mode, so that the device is attached to each component in the numerical control drilling machine, the insulation resistance among the components is easy to reduce, the safety and the insulation performance of the components are greatly improved, the metal powder can be adsorbed, the stability can be provided when the components are clamped, the electromagnetic force on two sides is utilized, the components are subjected to the relative balance force of the electromagnetic force, and the stable effect is achieved; finally, when the fastening assembly 16 is retracted inwardly, the components inside the fastening assembly 16 are subject to inertia, the sliding block 164 is caused to slide forward in the sliding rack 161, thereby sliding forward by the inner sliding teeth 162, the sliding connecting rods 165 on the upper and lower surfaces are driven to slide in the same direction while sliding, so that the second reset elastic piece 168, the elastic connecting rod 169, the ejecting block 1691 and the extrusion anti-skid block 1692 all slide forward and extend out through the extrusion hole 1693, so that the extruded non-slip blocks 1692 are connected to the left and right sides of the component through the extruded holes 1693, its extrusion non slipping spur 1692 that utilizes both sides connects the centre gripping, and it improves centre gripping steady force sets up the anti-skidding screw thread of extrusion non slipping spur 1692 surface in addition, can improve its and the relative friction of spare part surface, reduces the vibrations power that its drilling produced, prevents that the spare part from appearing rocking and inclined to one side the hole to improve its practicality.

Claims

1. The utility model provides a machine parts surface punches and uses numerically-controlled drilling machine, includes drilling bed seat (1), the fixed cover in top of drilling bed seat (1) is equipped with fastening linking frame (2), the fixed joint support post (3) that has cup jointed in top of fastening linking frame (2), the middle part fixed cover of joint support post (3) surface is equipped with installation mount (4), its characterized in that: the automatic cutting machine is characterized in that a drill cutter sliding frame (5) is fixedly arranged on one side of the mounting and fixing frame (4), a sliding inner rack (6) is fixedly sleeved on the middle of the drill cutter sliding frame (5), a sliding connection box (7) is movably sleeved on the middle of the outer surface of the sliding inner rack (6), a processing table (8) is fixedly arranged on one side of the drill base (1), a protective component (9) is movably sleeved on the outer surface of the processing table (8), a filter screen plate (10) is fixedly sleeved on the middle of the outer surface of the processing table (8), a drill cutter connecting base (11) is fixedly arranged at the bottom of the sliding connection box (7), adjusting clamping arm components (13) are fixedly arranged on the left side and the right side of the drill cutter connecting base (11), a drill cutter (12) is fixedly sleeved on the bottom of the drill cutter connecting base (11), and a clamping connecting rod (, the bottom of the clamping connecting rod (14) is fixedly connected with a clamping arm pressure foot (15), and the bottom of one side of the clamping arm pressure foot (15) is fixedly provided with a limiting fastening assembly (16);

the protection assembly (9) comprises a magnetic protection box (91), a master control power supply (92) is fixedly installed at the bottom of an inner cavity of the magnetic protection box (91), an electric telescopic rod (93) is fixedly installed in the middle of the bottom surface of the inner cavity of the magnetic protection box (91), a magnetic adsorption assembly (94) is fixedly connected to the top of the electric telescopic rod (93), a jacking groove (95) is formed in the top of the magnetic protection box (91), and a conductive conveyor (96) is fixedly installed on one side of the bottom of the inner cavity of the magnetic protection box (91);

one side fixed mounting who adjusts arm component (13) inner chamber has first elastic component (131) that resets, sliding connection groove (132) have been seted up at the middle part of adjusting arm component (13) one side, the equal swing joint in upper and lower two sides of adjusting arm component (13) inner wall has rotation axis (133), the surface movable sleeve who rotates axis (133) is equipped with rotating gear (134).

2. The numerical control drilling machine for drilling on the surface of the mechanical part as claimed in claim 1, wherein: magnetic adsorption subassembly (94) is including outer sleeve plate (941), the inside fixed mounting of outer sleeve plate (941) has electromagnetic plate (942), one side fixed mounting of outer sleeve plate (941) inner chamber has total board of transmission power (943), the opposite side fixedly connected with of total board of transmission power (943) shunts electroplax (944), the outer fixed surface of shunting electroplax (944) opposite side has shunted electric wire (945), the bottom fixedly connected with conductive bus (946) of total board of transmission power (943), bus hole groove (947) have been seted up to one side of outer sleeve plate (941) bottom.

3. The numerical control drilling machine for drilling on the surface of the mechanical part as claimed in claim 1, wherein: the middle part of the inner cavity of the limiting fastening assembly (16) is fixedly provided with a sliding gear rack (161), the upper and lower two surfaces of the inner cavity of the sliding gear rack (161) are fixedly provided with inner sliding gears (162), the upper and lower two surfaces of the inner cavity of the sliding gear rack (161) are respectively provided with a sliding chute (163), one side of the inner cavity of the sliding gear rack (161) is movably sleeved with a sliding block (164), the upper and lower two surfaces of the sliding block (164) are respectively and fixedly connected with a sliding connecting rod (165), the upper and lower two surfaces of one side of the inner cavity of the limiting fastening assembly (16) are respectively and fixedly provided with an elastic rack (166), one side of the elastic rack (166) is provided with a pulling groove (167), the other side of the sliding connecting rod (165) is fixedly connected with a second resetting elastic part (168) through the pulling groove (167), one side of the second resetting elastic connecting rod (168) is fixedly connected with an elastic connecting rod (169, the other side of the ejection block (1691) is fixedly sleeved with an extrusion antiskid block (1692), and the upper surface and the lower surface of one side of the limiting fastening component (16) are both provided with extrusion holes (1693).

4. The numerical control drilling machine for drilling on the surface of the mechanical part as claimed in claim 1, wherein: the filter screen plate (10) is fixedly sleeved at the bottom of the drill cutter (12), the distance between the top of the filter screen plate (10) and the bottom of the drill cutter (12) is five centimeters to six centimeters, and the diameter of a mesh on the outer surface of the filter screen plate (10) is five millimeters to six millimeters.

5. The numerical control drilling machine for drilling on the surface of the mechanical part as claimed in claim 1, wherein: the quantity of protection component (9) has two, two the left and right sides at filter screen board (10) is fixed adorn respectively to protection component (9), the horizontal width of protection component (9) and the horizontal width looks adaptation of filter screen board (10), two centimetres to three centimetres are separated from one side of one side and protection component (9) of filter screen board (10).

6. The numerical control drilling machine for drilling on the surface of the mechanical part as claimed in claim 2, wherein: the horizontal length that jacking groove (95) was seted up matches with the horizontal length of magnetic adsorption subassembly (94), the material of magnetic adsorption subassembly (94) surface is cotton-flax cloth material, the material of electromagnetic plate (942) is magnet material.

7. The numerical control drilling machine for drilling on the surface of the mechanical part as claimed in claim 2, wherein: the output end of the shunt electric wire (945) is electrically connected with the input end of the electromagnetic plate (942), the inside of the electromagnetic plate (942) is fixedly sleeved with the electrified magnetic plate, and the bottom of the conductive bus (946) is electrically connected with the output end of the conductive conveyor (96) through the bus hole groove (947).

8. The numerical control drilling machine for drilling on the surface of the mechanical part as claimed in claim 1, wherein: the one end of pressing from both sides tight connecting rod (14) is cup jointed in the inside of adjusting arm lock subassembly (13) through sliding connection groove (132) activity, it is heterotypic semicircle structure to press from both sides tight connecting rod (14), the opposite side of first elastic component (131) that resets and one side fixed connection who presss from both sides tight connecting rod (14), press from both sides tight connecting rod (14) activity and cup joint between two rotating gear (134), the upper and lower two sides homogeneity that presss from both sides tight connecting rod (14) is formed with concave tooth groove, and the shape size of concave tooth groove and the tooth looks adaptation of rotating gear (134) surface.

9. The numerical control drilling machine for drilling on the surface of the mechanical part as claimed in claim 3, wherein: one side of the elastic frame (166) is provided with a telescopic groove, the horizontal width of the telescopic groove is matched with the horizontal width of the elastic connecting rod (169), the outer surface of the extruded anti-skid block (1692) is integrally formed with anti-skid threads, the position of the extruded hole (1693) corresponds to the horizontal position of the extruded anti-skid block (1692), and the sliding block (164) is movably sleeved on the outer surface of the inner sliding tooth (162).