A drilling device for precision metal parts

Abstract

The present invention relates to the technical field of machining equipment, and particularly relates to a drilling device for precision metal parts. The present invention includes: a base, a fixture assembly for clamping the precision metal parts, a punching assembly for punching the metal parts, an adjustment assembly for adjusting the punching position, and a cooling assembly for cooling the punching position; the punching assembly includes: a drill bit, a main shaft connected to the drill bit, and a servo motor for driving the main shaft to rotate; a liquid inlet through hole is formed in the shank portion of the drill bit, a liquid outlet through hole is formed in the cutting portion of the drill bit, and a coolant channel communicating the liquid inlet through hole and the liquid outlet through hole is formed inside the drill bit; while the cooling assembly of the present application cools the inside of the drill bit, it simultaneously cools the external punching area and synchronously cleans the inner wall of the shielding and pressing member.

Description

Technical Field

[0001] The present invention relates to the technical field of machining equipment, and particularly relates to a drilling device for precision metal parts. Background Art

[0002] Precision metal parts are widely used in modern industry, including but not limited to fields such as aerospace, automotive manufacturing, electronic devices, medical devices, communication devices, etc. In these applications, the processing quality and precision of precision metal parts directly affect the performance and reliability of products; a large amount of metal chips generated during the drilling process, if not properly handled, will cause scratches on the processed surface, a decrease in the precision of the hole wall, and even damage to the tool; moreover, the high temperature during the drilling process will lead to increased tool wear, workpiece deformation, and a decrease in surface quality.

[0003] The invention with the application number CN202210080364.X relates to an efficient diamond drill bit capable of quickly cooling down, including a mounting base. A connecting groove is arranged inside the mounting base, a clamping mechanism is arranged in the connecting groove and clamps a drill rod, a drill bit is arranged at the bottom of the drill rod, and a chip removal mechanism is arranged on the outer surface of the drill bit; a cooling mechanism is arranged on the drill rod, and the cooling mechanism is used to cool down the drill bit; the present invention is arranged on a drilling device through the mounting base. When it is necessary to drill a hole in glass, first select a drill bit with a suitable specification. The drill bit and the drill rod are fixedly connected. Then, the top of the drill rod is clamped and fixed with the connecting groove. By adopting the clamping method, different specifications of drill bits can be conveniently replaced, making the invention highly practical. The chip removal mechanism arranged on the outer surface of the drill bit can discharge the glass waste chips from the chip removal groove when the diamond drill bit drills a hole, making the drill bit drill more smoothly.

[0004] However, the chips during the drilling process of this patent will escape outward. Although the fly ash in the air is settled, the chips cannot be centrally collected.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above defects. Summary of the Invention

[0006] The purpose of the present invention is to provide a drilling device for precision metal parts that can effectively solve the above technical problems.

[0007] To achieve the purpose of the present invention, the following technical solution is adopted:

[0008] A drilling device for precision metal parts, comprising: a base, a fixture assembly for clamping precision metal parts, a drilling assembly for drilling holes in the metal parts, an adjustment assembly for adjusting the drilling position, and a cooling assembly for cooling the drilling position;

[0009] The drilling assembly includes: a drill bit, a main shaft connected to the drill bit, and a servo motor for driving the main shaft to rotate; a liquid inlet through hole is provided in the shank of the drill bit, a liquid outlet through hole is provided in the cutting part of the drill bit, and a coolant channel communicating the liquid inlet through hole with the liquid outlet through hole is provided inside the drill bit;

[0010] The cooling assembly includes: a coolant nozzle, and a liquid supply unit for supplying liquid to the coolant nozzle;

[0011] A shielding and squeezing member for shielding debris and coolant, and a cleaning assembly for cleaning the shielding and squeezing member;

[0012] When the drilling assembly drills, the coolant nozzle supplies liquid to the liquid inlet through hole of the drill bit and sprays liquid to the shielding and squeezing member.

[0013] Furthermore, the coolant nozzle has a water outlet hole for spraying water to the liquid inlet through hole and the outside of the drill bit.

[0014] Furthermore, the shielding and squeezing member is installed around the main shaft;

[0015] The shielding and squeezing member is composed of an upper cover body, a lower cover body slidably installed in the upper cover body, and a spring connecting the upper cover body and the lower cover body.

[0016] Furthermore, the cleaning assembly includes: a cleaning member, and a connecting rod connected to the top of the cleaning member; the connecting rod is connected to the main shaft;

[0017] The cleaning member includes: a supporting part connected to the connecting rod, an arc-shaped cleaning part hinged to the supporting part, a storage part installed at the bottom of the arc-shaped cleaning part, and a buffer part connected to the storage part.

[0018] Furthermore, the storage part is composed of an outer arc provided on the outside and an inner arc provided on the inner wall of the outer arc; the inner arc bulges inward;

[0019] When the main shaft rotates at a high speed, a plurality of the outer arcs are connected in sequence to form a ring, and a plurality of the inner arcs are connected in sequence to form a wavy annular ring.

[0020] Furthermore, the adjustment assembly includes: a lifting assembly for driving the whole drilling assembly to move up and down, a moving assembly for driving the lifting assembly to move horizontally, and a mounting frame for mounting the moving assembly.

[0021] Furthermore, the lifting assembly includes: a sliding seat slidably installed on one side of the top of the mounting frame, a first motor installed on the top of the sliding seat, and a first screw coaxially connected to the output end of the first motor;

[0022] A chute is longitudinally formed in the side wall of the sliding seat, and a slider is slidably mounted in the chute; the slider is in threaded connection with the first screw rod; a motor mounting seat is fixedly mounted on the slider, and the motor mounting seat is connected to the servo motor.

[0023] Further, the moving component includes: a support seat horizontally and fixedly mounted on the top of the mounting frame, a second motor mounted on the support seat, and a second screw rod coaxially connected to the output end of the second motor; the second screw rod is in threaded connection with the sliding seat.

[0024] Further, the fixture component includes: a fixing plate, a clamping plate for clamping the metal part, and a third motor for driving the clamping plate to clamp the metal part;

[0025] The output end of the third motor is coaxially connected with a driving gear, the driving gear meshes with a first chain, and the first chain meshes with a first driven gear; the driving gear also meshes with a second chain, and the second chain meshes with a second driven gear; the first driven gear and the second driven gear are respectively coaxially connected with threaded rods; the threaded rods are respectively in threaded connection with two ends of the fixing plate.

[0026] Compared with the prior art, the present invention has the following beneficial effects: the cooling component of the present application cools the inside of the drill bit while cooling the external drilling area and synchronously cleaning the inner wall of the shielding and pressing member. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and are used to explain the present invention together with the embodiments of the present invention, and do not constitute a limitation to the present invention.

[0028] Figure 1 is a schematic structural diagram of the present invention;

[0029] Figure 2 is an axonometric schematic diagram of the present invention;

[0030] Figure 3 is a schematic structural diagram of the adjustment component of the present invention;

[0031] Figure 4 is Figure 3 a partial enlarged view of part A in

[0032] Figure 5 is Figure 3 a partial enlarged view of part B in

[0033] Figure 6 is a schematic structural diagram of the fixture component of the present invention;

[0034] Figure 7 is for the present invention Figure 6Partial enlarged view of part C;

[0035] Figure 8 Schematic structural diagram of the lifting component of the present invention;

[0036] Figure 9 Top view of the cleaning part of the present invention;

[0037] Figure 10 Schematic internal structure diagram of the cleaning component and the drill bit of the present invention;

[0038] Figure 11 Schematic internal structure diagram of the shielding and pressing part of the present invention;

[0039] Figure 12 is Figure 11 Partial enlarged view of part D in

[0040] In the figure: 1, base; 2, fixture assembly; 3, drilling assembly; 4, adjustment assembly; 5, cooling assembly; 31, drill bit; 32, servo motor; 41, lifting assembly; 42, moving assembly; 43, mounting bracket; 411, sliding seat; 412, first motor; 413, first screw; 414, slider; 415, motor mounting seat; 421, support seat; 422, second motor; 423, second screw; 51, coolant tank; 52, circulation pump; 53, coolant nozzle; 311, liquid inlet through hole; 312, liquid outlet through hole; 313, coolant channel; 34, shielding and pressing part; 33, cleaning assembly; 331, cleaning part; 332, connecting rod; 3311, supporting part; 3312, arc-shaped cleaning part; 3313, accumulating part; 3314, buffer part; 33131, outer arc; 33132, inner arc; 331321, annular ring; 21, fixing plate; 22, clamping plate; 23, third motor; 24, driving gear; 25, first chain; 26, first driven gear; 27, second chain; 28, second driven gear; 29, threaded rod; 341, upper cover body; 342, lower cover body; 343, spring. Detailed implementation manners

[0041] In order to make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0042] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "center", "lateral", "longitudinal", "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the protection scope of the present invention. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0043] As Figures 1 to 12 shown, a drilling device for precision metal parts of the present invention includes: a base 1; a fixture assembly 2 for clamping the precision metal parts, a drilling assembly 3 for drilling the metal parts, an adjustment assembly 4 for adjusting the drilling position, and a cooling assembly 5 for cooling the drilling position; a vision inspection camera for detecting the drilling state is installed on the base 1.

[0044] The drilling assembly 3 includes: a main shaft, a drill bit 31 connected to the main shaft, and a servo motor 32 for driving the main shaft to rotate. The servo motor 32 is connected to the main shaft through a coupling; the drill bit 31 is driven to drill by the servo motor 32.

[0045] The adjustment assembly 4 includes: a lifting assembly 41 for driving the entire drilling assembly 3 to move up and down, a moving assembly 42 for driving the lifting assembly 41 to move laterally, and a mounting bracket 43 for mounting the moving assembly 42. In this embodiment, laterally refers to the direction in the horizontal plane that is perpendicular to the conveying direction, that is, parallel to the length direction of the mounting bracket 43.

[0046] The lifting assembly 41 includes: a sliding seat 411 slidably mounted on one side of the top of the mounting bracket 43, a first motor 412 mounted on the top of the sliding seat 411, a first screw rod 413 coaxially connected to the output end of the first motor 412, a chute is longitudinally formed on the side wall of the sliding seat 411, a slider 414 is slidably mounted in the chute, and the slider 414 is threadedly connected to the first screw rod 413; a motor mounting seat 415 is fixedly mounted on the slider 414, and the motor mounting seat 415 is used to carry the drilling assembly 3.

[0047] The moving component 42 includes: a support base 421 horizontally and fixedly mounted on the top of the mounting frame 43, a second motor 422 mounted on the support base 421, a second screw rod 423 coaxially connected to the output end of the second motor 422, and the second screw rod 423 is threadedly connected to the sliding seat 411, and is used to drive the sliding seat to move horizontally by the second motor 422.

[0048] The lifting component 41 drives the drilling component 3 to lift, and the moving component 42 drives the lifting component 41 to move horizontally, so as to drive the drilling component 3 to move horizontally, so that the vertical position and the horizontal position of the drill bit 31 can be adjusted, and thus the drilling position can be adjusted according to needs.

[0049] The cooling component 5 includes: a liquid supply unit, which is composed of a coolant tank 51 mounted on the top of the mounting frame 43, a circulation pump 52 communicated with the coolant tank 51, a cooling pipeline and a return pipe communicated with the circulation pump 52; the water outlet end of the cooling pipeline is communicated with a coolant nozzle 53; the liquid outlet end of the coolant nozzle 53 is communicated with the shank of the drill bit 31; a liquid inlet through hole 311 is opened in the shank of the drill bit 31, and a liquid outlet through hole 312 is opened in the cutting part of the drill bit 31, and a coolant channel 313 communicating the liquid inlet through hole 311 and the liquid outlet through hole 312 is opened inside it; a shielding and squeezing member 34 for shielding debris and coolant, and a cleaning component 33 for cleaning the shielding and squeezing member 34.

[0050] The coolant nozzle 53 has a central water outlet hole and circumferentially mounted annular water outlet holes, and is used to spray coolant to the liquid inlet through hole 311 of the shank of the drill bit 31 and the outer wall of the drill bit 31 respectively to cool the inside and outside of the drill bit 31; the coolant is sprayed out from the liquid outlet through hole 312 of the cutting part of the drill bit 31, so as to cool the drill bit 31 and the metal part and wash away the debris at the drilling position; at the same time, the rotation of the drill bit 31 will also cause the water on the outer surface of the drill bit 31 to splash onto the inner wall; the opening of the annular water outlet hole faces downward and is inclined towards the direction of the drill bit 31, and is used to cool the drilling position from the outside.

[0051] A shielding and pressing member 34 is also installed on the main shaft. The shielding and pressing member 34 is located outside the drill bit 31. The shielding and pressing member 34 is in the shape of a hollow cylinder and is composed of an upper cover body 341, a lower cover body 342 slidably installed in the upper cover body 341, and a spring 343 connecting the upper cover body 341 and the lower cover body 342. The lower cover body 342 is preferably made of a transparent material. When the lifting assembly 41 drives the drill bit 31 to move downward, the lower cover body 342 contacts the upper surface of the metal part and preliminarily fixes the metal part. At the same time, the lower cover body 342 and the upper cover body 341 enclose the drill bit 31 inside, which can prevent the metal chips generated during the drilling of the drill bit 31 from splashing outward. The setting of the spring 343 allows for a vertical buffer space between the upper cover body 341 and the lower cover body 342, avoiding damage to the lower cover body 342 or the upper cover body 341 caused by downward pressure. The spring 343 is preferably a spring with a strong elastic force.

[0052] A cleaning assembly 33 for cleaning the shielding and pressing member 34 is also installed on the main shaft. The cleaning assembly 33 includes: a cleaning member 331 and a connecting rod 332 connected to the top of the cleaning member 331. The connecting rod 332 is connected to the main shaft. The connecting rod 332 is in the shape of a "7", and the top end of the connecting rod 332 is connected to the main shaft, and its bottom end is connected to the cleaning member 331.

[0053] The cleaning member 331 includes: a support portion 3311 connected to the bottom end of the connecting rod 332, an arc-shaped cleaning portion 3312 hinged to the support portion 3311, a storage portion 3313 installed at the bottom of the arc-shaped cleaning portion 3312, and a buffer portion 3314 connected to the storage portion 3313. The support portion 3311 is used to support and install the arc-shaped cleaning portion 3312. The hinge axis of the arc-shaped cleaning portion 3312 is located at one end away from the storage portion 3313. When the arc-shaped cleaning portion 3312 rotates with the main shaft, under the action of centrifugal force, the bottom end of the arc-shaped cleaning portion 3312 swings outward and contacts the inner wall of the lower cover body 342, so that the inner wall of the lower cover body 342 can be cleaned during the rotation process. The arc-shaped design of the arc-shaped cleaning portion 3312 enables, on the one hand, the cleaning of the debris on the inner wall of the lower cover body 342, and on the other hand, the debris in contact with the arc-shaped cleaning portion 3312 can be brought to the bottom of the lower cover body 342. At the same time, after the arc-shaped cleaning portion 3312 cleans the debris on the inner wall of the lower cover body 342, it can reduce the influence of impurities on the recognition effect of the vision camera. The storage portion 3313 is used to store the debris falling on the workbench surface. The buffer portion 3314 is used to provide a certain contraction space for the storage portion 3313 when the storage portion 3313 is under pressure.

[0054] During drilling, the coolant sprays from the liquid inlet through-hole 311 at the shank of the drill bit 31 into the interior of the drill bit 31 to cool the interior of the drill bit 31 and protect the drill bit 31; meanwhile, the coolant sprays out from the liquid outlet through-hole 312 of the drill bit 31 to wash away the debris at the drilling position; the coolant also sprays from the outside of the drill bit 31 towards the drilling area, thereby cooling the outside of the drill bit 31, further reducing the temperature and preventing the drill bit 31 from overheating; at the same time, the sprayed coolant flushes the inner wall of the shielding and squeezing member 34, and flushes the debris adhering to the inner wall of the shielding and squeezing member 34 towards the bottom of the shielding and squeezing member 34.

[0055] Preferably, the accumulation part 3313 is composed of an outer arc 33131 arranged on the outside and an inner arc 33132 arranged on the inner wall of the outer arc 33131; when the main shaft rotates at a high speed, the outer arcs 33131 of the accumulation parts 3313 of the plurality of shielding and squeezing members 34 are connected in sequence to form a ring, and the inner arcs 33132 are connected in sequence to form a corrugated annular ring 331321. By gathering the debris and the coolant within the annular range through the outer arc 33131, local concentration of the coolant can be achieved, and the heat in this area can be more effectively absorbed and carried away, thereby improving the overall cooling efficiency of the inner arc 33132; the flow of the coolant within the annular ring 331321 will form a certain scouring force, and the scouring force helps to wash down the debris, dirt and other impurities adhering to the surface of the component; at the same time, the inner arc 33132 drives the water flow, and during the flowing process, the debris is piled up on the surface of the annular ring 331321 to avoid the debris interfering with the drilling.

[0056] Preferably, a magnetic member is installed inside the inner arc 33132; the magnetic member is a magnet or an electromagnet; when an electromagnet is used, during drilling, the electromagnet is energized, and when drilling stops, the electromagnet is de-energized, so that the debris generated during drilling is attracted by the electromagnet to prevent the debris from falling into the hole.

[0057] During drilling, due to the rotation of the main shaft, while driving the drill bit 31 to drill, it also drives the shielding and squeezing member 34 to swing, so that the shielding and squeezing member 34 can not only prevent the debris generated by drilling from splashing, but also gather the collected debris within the annular ring 331321. At the same time, the cooling component 5 cools the interior of the drill bit 31 and the outside of the drill hole doubly; the external coolant also flows through the shielding and squeezing member 34 to wash away the debris adhering to the inner wall of the shielding and squeezing member 34, maintaining the clean state of the shielding and squeezing member 34 and ensuring that the shielding and squeezing member 34 can be used for a long time; when drilling through a hole, when the through-hole is drilled through, the drill bit 31 stops rotating, and the coolant accumulated in the accumulation part 3313 flows out from the through-hole, and at the same time drives the accumulated debris to flow out from the through-hole.

[0058] Preferably, an installation groove is formed on the side wall of the supporting part 3311, a spring is installed in the installation groove, and the other end of the spring is connected to a position near the bottom of the arc-shaped cleaning part 3312; when the main shaft does not rotate, the bottom of the arc-shaped cleaning part 3312 is far away from the main shaft.

[0059] The fixture assembly 2 includes: a fixing plate 21, a clamping plate 22 for clamping a metal part, and a third motor 23 for driving the clamping plate 22 to clamp the metal part; the output end of the third motor 23 is coaxially connected with a driving gear 24, the driving gear 24 meshes with a first chain 25, and the first chain 25 meshes with a first driven gear 26; the driving gear 24 is a double-link gear, the driving gear 24 also meshes with a second chain 27, and the second chain 27 meshes with a second driven gear 28; the first driven gear 26 and the second driven gear 28 are respectively coaxially connected with threaded rods 29, and the threaded rods 29 are respectively threadedly connected to both ends of the fixing plate 21; used to drive the fixing plate 21 to clamp the metal part.

[0060] How the vision inspection camera specifically inspects does not fall within the protection scope of the present invention. The methods of application numbers CN115401247A and CN113799195A can be used for vision inspection.

[0061] The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, details are not described herein. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0062] It should be understood that those of ordinary skill in the art can make improvements or changes according to the above description, and all such improvements and changes should fall within the protection scope of the appended claims of the present invention.

Claims

1. A drilling device for precision metal parts, characterized in that, Including: A base, a fixture assembly for clamping precision metal parts, a drilling assembly for drilling the metal parts, an adjustment assembly for adjusting the drilling position, and a cooling assembly for cooling the drilling position; The drilling assembly includes: a drill bit, a main shaft connected to the drill bit, and a servo motor for driving the main shaft to rotate; a liquid inlet through hole is formed in the shank of the drill bit, a liquid outlet through hole is formed in the cutting part of the drill bit, and a coolant channel communicating the liquid inlet through hole and the liquid outlet through hole is formed inside the drill bit; The cooling assembly includes: a coolant nozzle and a liquid supply unit for supplying liquid to the coolant nozzle; A shielding and squeezing member for shielding debris and coolant, and a cleaning assembly for cleaning the shielding and squeezing member; When the drilling assembly drills, the coolant nozzle supplies liquid to the liquid inlet through hole of the drill bit and sprays liquid to the shielding and squeezing member; The coolant nozzle has a water outlet hole for spraying water to the liquid inlet through hole and the outside of the drill bit; The shielding and squeezing member is installed around the main shaft; The shielding and squeezing member is composed of an upper cover body, a lower cover body slidably installed in the upper cover body, and a spring connecting the upper cover body and the lower cover body; The cleaning assembly includes: a cleaning member and a connecting rod connected to the top of the cleaning member; the connecting rod is connected to the main shaft; The cleaning member includes: a support portion connected to the connecting rod, an arc-shaped cleaning portion hinged to the support portion, a storage portion installed at the bottom of the arc-shaped cleaning portion, and a buffer portion connected to the storage portion; The storage portion is composed of an outer arc provided on the outside and an inner arc provided on the inner wall of the outer arc; The inner arc bulges inward; When the main shaft rotates at a high speed, a plurality of the outer arcs are connected in sequence to form a ring, and a plurality of the inner arcs are connected in sequence to form a corrugated annular ring.

2. The drilling device for precision metal parts according to claim 1, characterized in that, The adjustment assembly includes: a lifting assembly for driving the whole drilling assembly to move up and down, a moving assembly for driving the lifting assembly to move horizontally, and a mounting frame for mounting the moving assembly; 3. The drilling device for precision metal parts according to claim 2, characterized in that, The lifting assembly includes: a sliding seat slidably installed on one side of the top of the mounting frame, a first motor installed on the top of the sliding seat, and a first screw coaxially connected to the output end of the first motor; A chute is longitudinally formed in the side wall of the sliding seat, and a slider is slidably installed in the chute; the slider is threadedly connected to the first screw; a motor mounting seat is fixedly installed on the slider, and the motor mounting seat is connected to the servo motor; 4. The drilling device for precision metal parts according to claim 3, wherein, The moving assembly includes: a support seat horizontally and fixedly installed on the top of the mounting frame, a second motor installed on the support seat, and a second screw coaxially connected to the output end of the second motor; the second screw is threadedly connected to the sliding seat; 5. A drilling device for precision metal parts according to claim 1, characterized in that, The fixture assembly includes: a fixing plate, a clamping plate for clamping the metal part, and a third motor for driving the clamping plate to clamp the metal part; The output end of the third motor is coaxially connected with a driving gear, the driving gear meshes with a first chain, and the first chain meshes with a first driven gear; the driving gear also meshes with a second chain, and the second chain meshes with a second driven gear; the first driven gear and the second driven gear are respectively coaxially connected with threaded rods; the threaded rods are respectively threadedly connected to both ends of the fixing plate.

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