Universal drill for machining steel parts

Abstract

The application discloses a universal drill bit for steel piece machining, and relates to the technical field of metal cutting machining, which comprises a drill bit connecting part and a machining drill bit, and a motor for providing power for the machining drill bit is fixedly connected to the bottom end of the drill bit connecting part; an angle adjusting mechanism is arranged at the lower end of the drill bit connecting part; the angle adjusting mechanism comprises an upper rotating shaft, a lower rotating shaft, a middle rotating shaft and a cross shaft; the top end of the upper rotating shaft is fixedly connected with the output shaft of the motor at the bottom end of the drill bit connecting part; the lower end of the upper rotating shaft and the upper end of the middle rotating shaft are both fixedly connected with a first universal joint fork; the lower end of the middle rotating shaft and the upper end of the lower rotating shaft are both fixedly connected with a second universal joint fork; the two first universal joint forks are rotatably connected through the cross shaft; the two second universal joint forks are rotatably connected through the cross shaft; and the bottom end of the lower rotating shaft is rotatably connected with a connecting plate, so as to solve the problems that it is difficult to meet the machining requirement of a conical hole and the machining flexibility is poor.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal cutting, more particularly, to a universal drill bit for machining steel parts. BACKGROUND

[0002] A drill bit is a tool with a cutting edge at its head end that rotates at high speed to perform drilling operations on materials. In the process of manufacturing steel parts using steel as raw materials and subsequent machining of steel parts, the raw materials are processed into specific shapes and sizes through cutting and drilling operations by the drill bit.

[0003] In the process of machining steel parts using a drill bit, according to different machining requirements, sometimes it is required to perform drilling operations on the surface layer of the steel part while ensuring that the drilled hole presents a tapered structure with a narrow opening and a spacious internal passage. The traditional drill bit uses a linear in-out movement mode to complete the opening operation, which limits the ability to achieve geometric shape machining and makes it difficult to meet the machining requirements of tapered holes. The machining flexibility of the traditional drill bit is not good. SUMMARY

[0004] In view of the problems existing in the prior art, the purpose of the present application is to provide a universal drill bit for machining steel parts to solve the problems of difficulty in meeting the machining requirements of tapered holes and poor machining flexibility.

[0005] To solve the above problems, the present application adopts the following technical solutions.

[0006] A universal drill bit for machining steel parts, comprising a drill bit connecting part and a machining drill bit, the bottom end of the drill bit connecting part is fixedly connected with a motor providing power for the machining drill bit, an angle adjusting mechanism, the angle adjusting mechanism is arranged at the lower end of the drill bit connecting part, the angle adjusting mechanism comprises an upper rotating shaft, a lower rotating shaft, a middle rotating shaft and a cross shaft, the top end of the upper rotating shaft is fixedly connected with the output shaft of the motor at the bottom end of the drill bit connecting part, the lower end of the upper rotating shaft and the upper end of the middle rotating shaft are both fixedly connected with a first universal joint fork, the lower end of the middle rotating shaft and the upper end of the lower rotating shaft are both fixedly connected with a second universal joint fork, the two first universal joint forks are rotatably connected by the cross shaft, the two second universal joint forks are rotatably connected by the cross shaft, the bottom end of the lower rotating shaft is rotatably connected with a connecting plate, and the machining drill bit is rotatably connected with the right end inside the connecting plate.

[0007] Further, the lower end of the lower rotating shaft is fixedly sleeved with a first gear, the top end of the machining drill bit is sleeved with a second gear, and the first gear and the second gear are engaged.

[0008] Further, the bottom end of the drill bit connecting part is fixedly connected with a connecting block, the surface of the connecting block is rotationally connected with a rotating block, the lower end of the rotating block is fixedly connected with two suspension frames, the top end of the processing drill bit is fixedly sleeved with an annular slide rail, and the lower ends of the two suspension frames are slidably connected with the inside of the annular slide rail.

[0009] Further, the bottom end of the drill bit connecting part is fixedly connected with a suspension rod, the lower end of the suspension rod is fixedly connected with a second hydraulic rod, the output shaft of the second hydraulic rod is fixedly connected with a connecting frame, the two short arm ends of the connecting frame are rotationally connected with a first sliding block, the left end of the connecting plate is fixedly connected with a guide sliding frame, and the first sliding block is slidably connected with the inside of the guide sliding frame.

[0010] Further, a drilling mechanism is arranged in the inside of the processing drill bit, the drilling mechanism comprises a first hydraulic rod fixedly connected with the bottom end of the rotating block, a containing groove is arranged on the surface of the processing drill bit, the inside top end of the containing groove is rotationally connected with two connecting rotating shafts, and the surfaces of the two connecting rotating shafts are fixedly sleeved with unfolded cutter heads.

[0011] Further, the top ends of the unfolded cutter heads, which are close to each other, are fixedly connected with a first rotating protruding block and a second rotating protruding block respectively, the first rotating protruding block and the second rotating protruding block are rotationally connected, the top end of the second rotating protruding block is rotationally connected with a rotating frame, the output end of the first hydraulic rod is fixedly connected with a push rod, the rotating frame and the push rod are fixedly connected with a bearing, and the rotating frame and the push rod are rotationally connected through the bearing.

[0012] Further, a chip breaking mechanism is arranged in the inside of the unfolded cutter head, a plurality of cutter containing grooves are arranged on the sides of the two unfolded cutter heads which are away from each other, the chip breaking mechanism comprises a chip breaking cutter arranged in the cutter containing groove, a sliding groove is arranged in the inside of the cutter containing groove, and the two sides of the chip breaking cutter are fixedly connected with second sliding blocks.

[0013] Further, the surface of the chip breaking cutter is fixedly connected with a chip stopping plate.

[0014] Further, the side of the chip stopping plate which is away from the chip breaking cutter is fixedly connected with two push-away springs.

[0015] Further, the inside of the processing drill bit is fixedly connected with a magnet strip, the chip stopping plate is made of iron and can be attracted by the magnetic force of the magnet strip, and the magnet strip is located between the two unfolded cutter heads.

[0016] Compared with the prior art, the beneficial effects of the present application are:

[0017] (1) The scheme can realize power transmission through the cooperation of the first universal joint fork, the second universal joint fork and the cross shaft, ensure normal rotary machining function even in the case of deflection of the machining drill, make the motor smoothly drive the machining drill to rotate, and the displacement driving mechanism on the machine tool can synchronously control the displacement and rotation of the drill. The steel surface taper hole can be opened, and the flexibility and adaptability in the steel machining process are improved.

[0018] (2) When the steel surface taper hole is machined, the second hydraulic rod is used as power to adjust the inclination angle of the machining drill, realize instant control of the inclination, and then drive the machining drill to rotate, so as to perform the machining operation on the steel. Not only the precision of the taper hole opening is greatly improved, but also the flexibility in the taper hole machining process is further enhanced.

[0019] (3) When the machining drill is used to machine the steel, the two expanded cutting heads are expanded, the effective cutting structure formed by the machining drill and the expanded cutting head presents a conical shape, and by adjusting the inclination angle of the machining drill and cooperating with the conical cutting structure, the size of the taper hole can be adjusted in a larger range, and the flexibility in the steel machining process is further improved.

[0020] (4) When the expanded cutting head is used to machine the steel, the chip breaking knives on the two expanded cutting heads will extend from the comfortable knife grooves. When the expanded cutting head rotates, the chip breaking knives rotate synchronously. With the rotation of the chip breaking knives, the long strip-shaped cutting chips generated in the machining process can be effectively broken, so as to shorten the length of the chips, reduce the risk of jamming of the expanded cutting head due to too long chips, effectively prevent the phenomenon of stop or damage of the expanded cutting head due to jamming, and ensure the smoothness and safety of the machining process. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 is a structural schematic view of the present application;

[0022] Figure 2 is a structural schematic view of the machining drill of the present application;

[0023] Figure 3 is a structural schematic view of the machining drill inside the present application;

[0024] Figure 4 is a structural schematic view of the first gear and the second gear of the present application;

[0025] Figure 5 is a structural schematic view of the present application Figure 4 is an enlarged view of A in the present application;

[0026] Figure 6 is a structural schematic view of the expanded cutting head of the present application;

[0027] Figure 7 The structure diagram of the unfolded cutter head is shown in the figure;

[0028] Figure 8 The structure diagram of the unfolded cutter head is shown in the figure; Figure 7 The enlarged view of B in the figure;

[0029] Figure 9 The structure diagram of the unfolded cutter head is shown in the figure;

[0030] Figure 10 The structure diagram of the unfolded cutter head is shown in the figure.

[0031] The figure label explanation:

[0032] 1, drill head connecting part; 2, machining drill head; 301, connecting block; 302, rotating block; 303, suspension frame; 304, first hydraulic rod; 305, push rod; 306, unfolded cutter head; 307, bearing; 308, rotating frame; 309, connecting rotating shaft; 310, containing groove; 311, first rotating block; 312, second rotating block; 313, annular slide rail; 401, suspension rod; 402, second hydraulic rod; 403, upper rotating shaft; 404, lower rotating shaft; 405, first gear; 406, second gear; 407, connecting plate; 408, first universal joint fork; 409, middle rotating shaft; 410, cross shaft; 411, connecting frame; 412, first sliding block; 413, guide sliding frame; 414, second universal joint fork; 501, magnet strip; 502, chip breaker; 503, cutter containing groove; 504, second sliding block; 505, chip breaker plate; 506, push-off spring. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0034] Please refer to Figures 1-5The utility model provides a general drill bit for steel piece processing, including drill bit connecting portion 1 and processing drill bit 2, the bottom end fixed connection of drill bit connecting portion 1 has the motor of processing drill bit 2 power supply, angle adjusting mechanism, angle adjusting mechanism sets up in the lower end of drill bit connecting portion 1, angle adjusting mechanism includes upper pivot 403, lower pivot 404, middle pivot 409 and cross shaft 410, the top end of upper pivot 403 is fixedly connected with the output shaft of drill bit connecting portion 1 bottom end motor, the lower end of upper pivot 403 is fixedly connected with the upper end of middle pivot 409, the lower end of middle pivot 409 is fixedly connected with the upper end of lower pivot 404, two first universal joint fork 408 are rotatably connected between the two second universal joint fork 414, the first universal joint fork 408 is rotatably connected between the two second universal joint fork 414, the cooperation of first universal joint fork 408, second universal joint fork 414 and cross shaft 410 can realize the transmission of power, so that processing drill bit 2 can realize normal rotation processing operation.

[0035] Wherein, the bottom end rotatable connection of lower pivot 404 has connecting plate 407, through connecting plate 407 can make lower pivot 404 and processing drill bit 2 synchronous deflection, the right end inside rotatable connection of processing drill bit 2 and connecting plate 407, the lower end of lower pivot 404 is fixedly provided with first gear 405, the top end of processing drill bit 2 is provided with second gear 406, first gear 405 is engaged with second gear 406, the cooperation of first gear 405 and second gear 406 can realize the transmission of power, the bottom end fixed connection of drill bit connecting portion 1 has connecting block 301, the surface rotatable connection of connecting block 301 has rotating block 302, the lower end fixed connection of rotating block 302 has two suspension frames 303, the top end fixed sleeve of processing drill bit 2 is provided with annular slide rail 313, the lower end of two suspension frames 303 is slidably connected with the inside of annular slide rail 313.

[0036] Wherein, the bottom end fixed connection of drill bit connecting portion 1 has suspension rod 401, the lower end fixed connection of suspension rod 401 has second hydraulic rod 402, can drive lower pivot 404 and processing drill bit 2 to incline through second hydraulic rod 402, the output shaft fixed connection of second hydraulic rod 402 has connecting frame 411, the rotatable connection of the both short arm ends of connecting frame 411 has first sliding block 412, the left end fixed connection of connecting plate 407 has guide slide frame 413, the inside slidably connected of first sliding block 412 and guide slide frame 413.

[0037] By adopting the above technical scheme, when the machining drill bit 2 is used to process the steel piece, the motor in the drill bit connecting part 1 provides power to drive the upper rotating shaft 403 to rotate, and then drive the lower rotating shaft 404 and the first gear 405 to rotate, and then drive the second gear 406 to rotate, so that the machining drill bit 2 can be driven to rotate through the rotation of the second gear 406, so that the machining drill bit 2 is rotated at high speed to realize the processing of the steel piece, and when the tapered hole is opened on the surface of the steel piece, the connecting plate 407 can be driven to rotate by the second hydraulic rod 402, so that the lower rotating shaft 404 and the machining drill bit 2 can be driven to tilt by the connecting plate 407, and then the machining drill bit 2 is driven to rotate and the displacement driving mechanism on the machine tool for driving the drill bit to displace drives the machining drill bit 2 to displace and rotate, so that the tapered hole on the surface of the steel piece can be opened, and the flexibility of processing the steel piece is improved, and when the upper rotating shaft 403 rotates and the lower rotating shaft 404 is in an inclined state, the power transmission can be realized by the cooperation of the first universal joint fork 408, the second universal joint fork 414 and the cross shaft 410, so that the machining drill bit 2 can realize normal rotary processing operation.

[0038] As shown in Figures 6-9 The drilling mechanism is arranged in the inside of the machining drill bit 2, and the drilling mechanism comprises a first hydraulic rod 304 fixedly connected with the bottom end of the rotating block 302, the first hydraulic rod 304 can push two unfolded cutting heads 306 to rotate and unfold around the connecting rotating shaft 309, the surface of the machining drill bit 2 is provided with a receiving groove 310, the inside top end of the receiving groove 310 is rotatably connected with two connecting rotating shafts 309, the surfaces of the two connecting rotating shafts 309 are fixedly sleeved with unfolded cutting heads 306, and the effective cutting structure formed by the machining drill bit 2 and the unfolded cutting heads 306 presents a conical shape, thereby improving the flexibility of processing the steel piece.

[0039] The top ends of the unfolded cutting heads 306 are fixedly connected with a first rotating lug 311 and a second rotating lug 312 on the side close to each other, respectively, the first rotating lug 311 and the second rotating lug 312 are rotatably connected, the top end of the second rotating lug 312 is rotatably connected with a rotating frame 308, the output end of the first hydraulic rod 304 is fixedly connected with a push rod 305, the rotating frame 308 and the push rod 305 are fixedly connected with a bearing 307, and the rotating frame 308 and the push rod 305 are rotatably connected through the bearing 307.

[0040] By adopting the above technical scheme, when the machining drill bit 2 is used to process the steel piece, as the machining drill bit 2 drills into the inside of the steel piece, the first hydraulic rod 304 pushes the push rod 305 downward, the push rod 305 pushes the first rotating lug 311 and the second rotating lug 312 downward again, the two unfolded cutter heads 306 can be rotated and unfolded around the connecting rotating shaft 309 as the axis, the machining drill bit 2 can drive the two unfolded cutter heads 306 to rotate at the same time, the effective cutting structure formed by the machining drill bit 2 and the unfolded cutter heads 306 presents a conical shape, and by adjusting the inclination angle of the machining drill bit 2, a conical hole with greater size freedom can be formed, and the flexibility of the machining of the steel piece is further improved.

[0041] As shown in Figure 7 and Figure 10 , the chip breaking mechanism is arranged in the inside of the unfolded cutter head 306, a plurality of cutter accommodating grooves 503 are arranged on the side of the two unfolded cutter heads 306 away from each other, the chip breaking mechanism comprises a chip breaking cutter 502 arranged in the cutter accommodating groove 503, the chip breaking cutter 502 can break the long strip-shaped chips generated in the machining process, and the length of the chips is reduced, a sliding groove is arranged in the inside of the cutter accommodating groove 503, the two sides of the chip breaking cutter 502 are fixedly connected with second sliding blocks 504, the second sliding blocks 504 are slidingly connected with the inner wall of the sliding groove in the inside of the cutter accommodating groove 503, and a chip stopping plate 505 is fixedly connected to the surface of the chip breaking cutter 502, the chip stopping plate 505 can prevent the chips from entering the space where the push-away spring 506 is arranged, so that the push-away spring 506 is not stuck and the use is affected.

[0042] The one side of the chip stopping plate 505 away from the chip breaking cutter 502 is fixedly connected with two push-away springs 506, the two push-away springs 506 can push the chip breaking cutter 502 to stretch out of the cutter accommodating groove 503, a magnet strip 501 is fixedly connected to the inside of the machining drill bit 2, the chip stopping plate 505 is made of iron and can be attracted by the magnetic force of the magnet strip 501, when the two unfolded cutter heads 306 are retracted into the accommodating groove 310, the chip stopping plate 505 and the magnet strip 501 are attracted to each other, the chip breaking cutter 502 can be retracted into the cutter accommodating groove 503, so that the machining drill bit 2 can be pulled out, and the magnet strip 501 is located between the two unfolded cutter heads 306.

[0043] By adopting the above technical scheme, when the steel piece is machined by using the unfolding cutter head 306, with the unfolding of the two unfolding cutter heads 306, the chip blocking plate 505 moves away from the magnet strip 501, since the pushing-away spring 506 is in a compressed state, at this time, the broken chip cutter 502 can be pushed out of the cutter accommodating groove 503 by the pushing-away spring 506, that is, the plurality of broken chip cutters 502 can be driven to rotate synchronously when the unfolding cutter head 306 rotates, and with the rotation of the broken chip cutter 502, the long strip-shaped chips generated in the machining process can be broken, so that the length of the chips is reduced, thereby reducing the probability that the unfolding cutter head 306 is stuck due to the chips being too long, and preventing the unfolding cutter head 306 from being stuck and stopped or damaged, and when the machining drill bit 2 is pulled out of the steel piece and the like without the need to break the chips, with the retraction of the two unfolding cutter heads 306 into the accommodating groove 310, the chip blocking plate 505 moves close to the magnet strip 501, the chip blocking plate 505 and the magnet strip 501 are attracted to each other, and then the broken chip cutter 502 is driven to retract into the cutter accommodating groove 503, so as to facilitate the pulling out of the machining drill bit 2.

[0044] Method for use: the motor in the drill bit connecting part 1 drives the upper rotating shaft 403 to rotate, and then drives the lower rotating shaft 404 and the first gear 405 to rotate, and then drives the second gear 406 to rotate, and the machining drill bit 2 is driven to rotate by the rotation of the second gear 406 to machine the steel piece.

[0045] The machining drill bit 2 is tilted by the second hydraulic rod 402, and then the machining drill bit 2 is driven to rotate and the displacement driving mechanism on the machine tool for driving the drill bit to displace drives the machining drill bit 2 to displace and rotate, so that the conical hole on the surface of the steel piece can be opened.

[0046] After the machining drill bit 2 is drilled into the inside of the steel piece, the first hydraulic rod 304 pushes the push rod 305 downward, and then the push rod 305 pushes the first rotating protrusion 311 and the second rotating protrusion 312 downward, so that the two unfolding cutter heads 306 rotate and unfold around the connecting rotating shaft 309, and the adjustment of the inclination angle of the machining drill bit 2 can realize the opening of the conical hole with greater size freedom.

[0047] With the unfolding of the two unfolding cutter heads 306, the pushing-away spring 506 pushes the broken chip cutter 502 out of the cutter accommodating groove 503, and then the long strip-shaped chips generated in the machining process are broken by the rotation of the broken chip cutter 502.

[0048] When the machining drill bit 2 is pulled out of the steel piece, the two unfolding cutter heads 306 retract into the accommodating groove 310, the chip blocking plate 505 and the magnet strip 501 are attracted to each other, and the broken chip cutter 502 is driven to retract into the cutter accommodating groove 503, so that the machining drill bit 2 can be pulled out.

[0049] The above merely provides the preferred embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art, according to the technical solution of the present application and the improved concept thereof, makes equivalent replacement or change within the technical range disclosed by the present application, and all should be covered in the protection scope of the present application.

Claims

1. A universal drill bit for machining steel parts, comprising a drill bit connecting part (1) and a machining drill bit (2), the bottom end of the drill bit connecting part (1) is fixedly connected with a motor for providing power for the machining drill bit (2), characterized in that: Angle adjusting mechanism, angle adjusting mechanism is established in the lower extreme of drill bit connecting part (1), angle adjusting mechanism includes upper pivot (403), lower pivot (404), middle pivot (409) and cross shaft (410), the top end of upper pivot (403) is fixedly connected with the output shaft of drill bit connecting part (1) bottom end motor, the lower end of upper pivot (403) is fixedly connected with the upper end of middle pivot (409) both, the lower end of middle pivot (409) is fixedly connected with the upper end of lower pivot (404) both, two first universal joint fork (408) between through cross shaft (410) rotationally connected, two second universal joint fork (414) between through cross shaft (410) rotationally connected, the bottom end of lower pivot (404) rotationally connected with connecting plate (407), the right end inside rotationally connected of processing drill bit (2) with connecting plate (407); Drilling mechanism, drilling mechanism is established in the inside of processing drill bit (2), drilling mechanism includes with the first hydraulic rod (304) fixedly connected with the bottom end of rotating block (302), the surface of processing drill bit (2) is set up with containing groove (310), the inside top end of containing groove (310) is rotationally connected with two connecting pivot (309), the surface of two connecting pivot (309) is fixedly set up with unfolding cutter head (306) both, the top end of unfolding cutter head (306) is fixedly connected with first rotation lug (311) and second rotation lug (312) respectively on the side of each other close side, first rotation lug (311) and second rotation lug (312) rotationally connected, the top end of second rotation lug (312) is rotationally connected with rotating frame (308), the output end of first hydraulic rod (304) is fixedly connected with push rod (305), the rotating frame (308) and push rod (305) between fixedly connected with bearing (307), the rotating frame (308) and push rod (305) are rotationally connected through bearing (307); The drilling mechanism further includes a chip breaking mechanism, the chip breaking mechanism is arranged in the inside of the unfolding cutter head (306), a plurality of cutter accommodating grooves (503) are formed on the sides of the two unfolding cutter heads (306) away from each other, the chip breaking mechanism includes a chip breaking cutter (502) arranged in the cutter accommodating groove (503), a sliding groove is formed in the inside of the cutter accommodating groove (503), second sliding blocks (504) are fixedly connected to the two sides of the chip breaking cutter (502), and the second sliding blocks (504) are slidingly connected with the inner walls of the sliding grooves in the cutter accommodating groove (503).

2. The universal drill bit for machining of steel parts according to claim 1, characterized in that: The lower end of the lower pivot (404) is fixedly sleeved with a first gear (405), and the top end of the processing drill bit (2) is sleeved with a second gear (406).

3. The universal drill bit for machining steel parts according to claim 1, characterized in that: The bottom end of the drill bit connecting part (1) is fixedly connected with a connecting block (301), the surface of the connecting block (301) is rotatably connected with a rotating block (302), the lower end of the rotating block (302) is fixedly connected with two suspension frames (303), the top end of the machining drill bit (2) is fixedly sleeved with an annular sliding rail (313), and the lower ends of the two suspension frames (303) are slidably connected with the inside of the annular sliding rail (313).

4. The universal drill bit for machining steel parts according to claim 1, characterized in that: The bottom end of the drill bit connecting part (1) is fixedly connected with a suspension rod (401), the lower end of the suspension rod (401) is fixedly connected with a second hydraulic rod (402), the output shaft of the second hydraulic rod (402) is fixedly connected with a connecting frame (411), the two short arm ends of the connecting frame (411) are rotatably connected with a first sliding block (412), the left end of the connecting plate (407) is fixedly connected with a guide sliding frame (413), and the first sliding block (412) and the guide sliding frame (413) are slidably connected.

5. The universal drill bit for machining steel parts according to claim 1, characterized in that: The surface of the chip breaker (502) is fixedly connected with a chip breaker plate (505).

6. The universal drill bit for machining of steel parts according to claim 5, characterized in that: The far side of the chip breaker plate (505) from the chip breaker (502) is fixedly connected with two push-away springs (506).

7. The universal drill bit for machining steel parts according to claim 5, characterized in that: The inside of the machining drill bit (2) is fixedly connected with a magnet strip (501), the chip breaker plate (505) is made of iron and can be attracted by the magnetic force of the magnet strip (501), and the magnet strip (501) is located between the two spread cutter heads (306).

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