CN114734074A - Portable high-precision automatic feeding drilling equipment - Google Patents

Portable high-precision automatic feeding drilling equipment Download PDF

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Publication number
CN114734074A
CN114734074A CN202210391604.8A CN202210391604A CN114734074A CN 114734074 A CN114734074 A CN 114734074A CN 202210391604 A CN202210391604 A CN 202210391604A CN 114734074 A CN114734074 A CN 114734074A
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China
Prior art keywords
feeding
ball screw
main shaft
drill
template
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Granted
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CN202210391604.8A
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Chinese (zh)
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CN114734074B (en
Inventor
付饶
刘帅
王福吉
李泳坤
常宇豪
赵猛
张博宇
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Dalian University of Technology
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Dalian University of Technology
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Publication of CN114734074A publication Critical patent/CN114734074A/en
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Publication of CN114734074B publication Critical patent/CN114734074B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
    • B23B47/28—Drill jigs for workpieces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B49/00—Measuring or gauging equipment on boring machines for positioning or guiding the drill; Devices for indicating failure of drills during boring; Centering devices for holes to be bored
    • B23B49/02—Boring templates or bushings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
    • B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
    • B23Q3/06—Work-clamping means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/22—Feeding members carrying tools or work
    • B23Q5/34—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission
    • B23Q5/38—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously
    • B23Q5/40—Feeding other members supporting tools or work, e.g. saddles, tool-slides, through mechanical transmission feeding continuously by feed shaft, e.g. lead screw
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention belongs to the field of processing equipment, and provides portable high-precision automatic feeding drilling equipment which comprises a main shaft module, a feeding module, a drill body fixing module, a control module and a bearing frame. The spindle module comprises a spindle motor, a spindle belt pulley transmission device, a spline spindle and a special drill bit and is used for driving the rotary cutting motion of the drill bit; the feeding module comprises a power unit and a positioning unit and is used for driving the high-precision feeding motion of the drill bit; the drill body fixing module is used for quickly and stably clamping an automatic feeding drill and workpiece materials; the control module is used for controlling drilling parameters, feeding distance and start-stop. The invention realizes the main shaft rotation movement and the feeding movement simultaneously through two independent motors, and can realize the change of drilling parameters in the drilling process, thereby well matching the characteristics of different materials; the hole making equipment can be quickly and stably clamped, the hole making efficiency and the stability of the hole making precision are ensured, and the intelligent degree is high.

Description

Portable high-precision automatic feeding drilling equipment
Technical Field
The invention relates to the field of machining equipment, in particular to portable high-precision automatic feeding drilling equipment.
Background
The lightweight high-strength carbon fiber reinforced resin matrix Composite (CFRP) and the metal material (such as titanium alloy, aluminum alloy and the like) with alternating load resistance are the optimal selection for weight reduction and efficiency improvement of aerospace high-end equipment. In order to ensure the highly reliable assembly and high-performance service of CFRP and laminated structures, tens of thousands of connecting holes with high precision and high surface quality need to be processed at high efficiency. Because the hole making link is mostly carried out on the assembly site, the space is limited, and the traditional numerical control machine tool, industrial mechanical arm and the like have poor processing accessibility and are difficult to apply; the manual processing mode is adopted, the drilling feeding axial force needs to be controlled by depending on the experience of workers, the stability of the drilling precision is difficult to ensure, and when the drilling aperture is too large or high-strength materials such as titanium alloy are drilled, the manual feeding operation cannot be carried out by the workers due to the too large axial force. Therefore, it is necessary to develop a portable high-precision drilling apparatus suitable for a narrow space.
The invention adopts a pneumatic motor driving mode, outputs power to a main shaft through gear transmission to realize fixed rotating speed and feeding speed, and the whole mechanism adopts a pure mechanical driving mode and has higher reliability, but the transmission ratio is fixed, and the processing parameters cannot be changed in the drilling process. The Cibacetian and Perera of France Saeti science and technology company invents "drilling device with self-aligning main shaft and automatic or controlled feeding speed", patent No. ZL201710628905.7, the equipment adopts double-motor driving mode, the main motor and the auxiliary motor respectively and independently control the rotary motion and the feeding motion of the drilling machine, the gear train structure is compact, the precision requirement of parts is higher, the main shaft structure adopts special processing, so that the price is extremely expensive, and the precision stability of a drilling hole is difficult to meet the requirement, thus the wide application of the drilling device is seriously limited. The patent number is ZL 202010441887.3, the device adopts a double-motor driving mode, two motors respectively control the rotation motion and the feeding motion of the device, stepless speed change and process parameter change can be achieved, an axial low-frequency vibration auxiliary module can be additionally arranged, the chip breaking function of metal materials difficult to machine is achieved, but the adopted mode that double-ball lead screws push a spline main shaft to achieve feeding is large in size, the motion precision is not easy to guarantee, and the requirements of narrow space and high-precision hole making are difficult to meet.
In summary, in order to meet the requirements of miniaturization and precision stability of equipment in a narrow space and high-precision hole making in an aerospace assembly field, development of portable automatic feeding drilling equipment with more compactness, reliable structure and high precision is required.
Disclosure of Invention
The invention provides portable high-precision automatic feeding drilling equipment for overcoming the defects of the prior art. This portable high accuracy automatic feed bores includes: the device comprises a main shaft module 1, a feeding module 2, a drill body fixing module 3 and a control module 4. The spindle motor 101 and the feeding motor 201 are used for respectively controlling the spindle to rotate and feed, and the drilling parameters and the feeding distance for drilling the composite material and the metal material are set by controlling related keys on the PLC touch screen 401, so that variable parameter processing of the laminated material is realized.
The technical scheme of the invention is as follows: a portable high-precision automatic feeding drilling device comprises a main shaft module 1, a feeding module 2, a drill body fixing module 3, a control module 4 and a bearing frame;
the bearing frame is a shell 501, the shell 501 is a hollow structure with two opposite sides being through, and a protective cover 502 is fixed on one through side and used for wrapping the spindle motor 101 and the feeding motor 201; a rail bottom platform 5013 is located in the housing 501;
the main shaft module 1 comprises a main shaft motor 101, a main shaft belt pulley transmission device, a spline main shaft 106 and a special drill bit 107; the spindle motor 101 is fixed on the motor base 108, and the motor base 108 is fixed on the housing 501; the main shaft belt pulley transmission device comprises a main shaft synchronous belt pulley 102, a main shaft synchronous belt 103, a spline synchronous belt pulley 104 and a ball spline nut 105; a main shaft synchronous pulley 102 is mounted on an output shaft of the main shaft motor 101, and power is transmitted to a spline synchronous pulley 104 through a main shaft synchronous belt 103; the ball spline nut 105 is divided into an outer stator and an inner rotor, the outer stator is fixed in the shell 501, the inner rotor is connected with the spline synchronous pulley 104 and receives power transmitted by the spline synchronous pulley 104; the inner rotor is provided with a ball channel, the spline spindle 106 penetrates through the ball channel, and a steel ball in the ball channel transmits power to the spline spindle 106 to realize rotation of the spline spindle 106; the front end of the spline main shaft 106 is in threaded connection with a special drill bit 107 to realize rotary cutting movement;
the feeding module 2 comprises a power unit and a positioning unit;
the power unit comprises a feeding motor 201 and a feeding belt transmission device; the feeding motor 201 is fixed on the feeding motor base 217, and the feeding motor base 217 is fixed on the shell 501 and positioned below the motor base 108; the feeding belt transmission device comprises a feeding synchronous pulley 202, a feeding synchronous pulley tensioning sleeve 203, a feeding synchronous belt 204, a ball screw synchronous pulley 205, a ball screw tensioning sleeve 206, a ball screw rear end bearing seat 207, a ball screw rear end bearing 208, a ball screw 209, a ball screw front end bearing seat 210, a ball screw front end bearing 211 and a ball screw nut 212; a feed synchronous pulley 202 is mounted on an output shaft of the feed motor 201 through a feed synchronous pulley tensioning sleeve 203, and power is transmitted to a ball screw synchronous pulley 205 through a feed synchronous belt 204; the tail end of a ball screw 209 is fixed on the ball screw synchronous pulley 205 through a ball screw tensioning sleeve 206 and is supported through a ball screw rear end bearing 208 on a ball screw rear end bearing seat 207, and the other end of the ball screw is supported through a ball screw front end bearing 211 on a ball screw front end bearing seat 210; a ball screw nut 212 which is sleeved on the ball screw 209 is fixed on the sliding table 213, and the rotary motion of the ball screw 209 is converted into the linear motion of the sliding table 213;
the positioning unit comprises a sliding table 213, a main shaft tail end bearing 214, a sliding block 215 and a linear guide rail 216; the sliding table 213 is fixedly connected with a sliding block 215, and the sliding block 215 moves on the linear guide rail 216 through the compression of a ball and the matching of the ball and the linear guide rail 216; the sliding table 213 is hollow and is provided with a pair of main shaft tail end bearings 214, and the rear end of the spline main shaft 106 is inserted into the inner ring of the main shaft tail end bearings 214;
the drill fixing module 3 comprises a drill bushing 301, a drill plate 302, an upper plate fixing frame 303, an upper plate 304, a lower plate 305, a clamp bottom plate 306 and a lower plate fixing frame 307; the whole drill bushing 301 is of a hollow structure, and the special drill bit 107 extends into the hollow structure; one end of the drill bushing 301 is a flange structure 3011 fixed outside the housing 501, and a positioning groove 3012 is formed inside the drill bushing 301 for ensuring the position between the drill bushing 301 and the housing 501; the middle part of the drill bushing 301 is provided with a dust suction port 3013 for timely drawing out cuttings; the other end of the drill bushing 301 is provided with a rotary clamping structure 3014 for matching with a clamping bolt 3021 on the drill plate 302 to fix the drill bushing 301 to bear all axial force and torque in the drilling process; meanwhile, the rotary clamping structure 3014 is matched with the clamping bolt 3021 to lock the drill bushing 301, so that an axial gap is avoided;
the clamp bottom plate 306 is provided with a rectangular through hole, and the front side and the rear side of the clamp bottom plate are respectively fixed with an upper template fixing frame 303 and a lower template fixing frame 307; the section of the upper template fixing frame 303 is in a shape of a 'mouth', opposite surfaces of the upper end and the lower end of the upper template fixing frame are correspondingly provided with template sliding grooves 3031, and the drill template 302 and the upper template 304 are arranged between the sliding grooves 3031 to move; the outer surfaces of the upper end and the lower end of the upper template fixing frame 303 are provided with front threaded holes 3032 for fixing the drill template 302 and the upper template 304; the structure of the lower template fixing frame 307 is similar to that of the upper template fixing frame 303, a lower template sliding groove 3072 is also formed in the lower template fixing frame 307, the lower template 305 is placed between the lower template sliding grooves 3072 to move, and the lower template 305 is fixed through a rear threaded hole 3071;
the drill plate 302 is provided with template holes 3022 with intervals for axial positioning of the drill bushing 301; threaded holes are formed around the template hole 3022 and used for installing a clamping bolt 3021 and limiting the movement of the drill bushing 301 in the drilling process;
the upper template 304 and the lower template 305 are used for tightly pressing and clamping the composite material and the metal laminated material 503;
the control module 4 comprises a PLC touch screen 401 and a control box 402; the PLC touch screen 401 is used for setting drilling parameters, feeding distance and starting and stopping, and electric signals are transmitted to the spindle motor 101 and the feeding motor 201 through the control box 402, so that drilling movement is achieved.
The linear guide 216 is fixed on a guide bottom platform 5013 in the housing 501, and the two ends of the linear guide are respectively provided with a front boss 5012 and a side boss 5011 for limiting.
The control module 4 comprises a PLC touch screen 401 and a control box 402; the PLC touch panel 401 is used for setting drilling parameters, a feeding distance, and start/stop, and transmits an electric signal to the spindle motor 101 and the feeding motor 201 through the control box 402 to implement drilling movement.
The invention has the beneficial effects that the portable high-precision automatic feeding drilling equipment comprises a main shaft module 1, a feeding module 2, a drill body fixing module 3, a control module 4 and a bearing frame; the rotary motion and the feed motion of the main shaft are realized simultaneously by two independent motors, and the change of drilling parameters can be realized in the drilling process, so that the characteristics of different materials are well matched; the feeding motion is realized through the combination of the ball screw 209, the sliding table 213, the sliding block 215 and the linear guide rail 216, the motion precision is good, and the hole making precision is further ensured; through the design of the rotary clamping structure 3014 on the drill bushing 301, the hole making equipment can be quickly and stably clamped, and the hole making efficiency and the stability of the hole making precision are ensured; the drilling template 302, the upper template 304 and the lower template 305 realize back-and-forth translation, and can meet the hole making requirements of workpieces at different positions and different sizes; the equipment is controlled by the PLC touch screen 401, and the intelligent degree is high.
Drawings
FIG. 1 is a bottom-view exploded schematic view of a portable high-precision auto-feed drill;
FIG. 2 is a schematic view of a portable high-precision automatic feed drill with hidden parts and components in the overall structure, shown in FIG. 1;
FIG. 3 is a schematic view 2 of a hidden part of the whole structure of the portable high-precision automatic feeding drill;
FIG. 4 is a front view of a part to be machined;
FIG. 5 is a rear view of a part to be machined after being clamped;
FIG. 6 is a schematic cross-sectional view of a portable high-precision auto-feed drill;
fig. 7 is a schematic view of the overall structure of the portable high-precision automatic feed drill.
Wherein: 1, a main shaft module, 101, 102, 103, 104, 105, 106 spline main shafts, 107 special drill bits and 108 spindle motor bases; 2, a feeding module, 201, a feeding motor, 202, 203, a synchronous pulley tensioning sleeve, 204, a synchronous belt, 205, a ball screw synchronous pulley, 206, a ball screw tensioning sleeve, 207, 208, 209, 210, a front end bearing seat, 211, a front end bearing, 212, a ball screw nut, 213, a sliding table, 214, a main shaft tail end bearing, 215, 216, a linear guide rail and 217, a motor base; 3, a drill body fixing module, 301 a drill bushing, 302 a drill plate, 303 an upper template fixing frame, 304 an upper template, 305 a lower template, 306 a clamp bottom plate and 307 a lower template fixing frame; 3011, flange structure, 3012 positioning groove, 3013 dust suction port, 3014 rotary clamping structure, 3021 clamping bolt, 3022 template hole, 3031 sliding chute, 3032 front threaded hole, 3071 rear threaded hole; 3072 sliding chute of lower template; 4, a control module, a 401PLC touch screen and a 402 control box; 501 shell, 502 protective cover, 503 composite material and metal laminated material, 5011 guide rail side boss, 5012 guide rail front positioning boss and 5013 guide rail bottom platform.
Detailed Description
The present invention will be described in further detail with reference to the following detailed description and accompanying drawings.
Example 1
Referring to fig. 1 to 7, a portable high precision auto-feed drilling apparatus includes: the device comprises a main shaft module 1, a feeding module 2, a drill body fixing module 3, a control module 4 and a bearing frame.
In this embodiment, the spindle motor base 108 of the spindle module 1 is connected to the spindle motor 101 through a bolt, the spindle motor 101 is a power source, the spindle motor 101 is fastened to the spindle synchronous pulley 102, and the spindle synchronous pulley 102 is connected to the spline synchronous pulley 104 by using the spindle synchronous belt 103. The spline timing pulley 104 is fastened to one end of the ball spline nut 105 with a bolt, and the other end of the ball spline nut 105 is fitted into a mounting hole of the housing 501. The ball spline nut 105 is divided into an outer stator and an inner rotor, the inner rotor is provided with a ball channel, power is transmitted to the spline spindle 106 through balls, the circumferential freedom degree of the spline spindle 106 is limited, and the axial freedom degree is provided. The tail end of the spline main shaft 106 is connected with a special drill bit 107 by adopting thread fastening and large taper conical surface positioning, and the special drill bit 107 executes action according to the movement of spiral advancing.
In this embodiment, in the feeding module 2, the feeding motor 201 is fixed by using the feeding motor base 217 connected to the housing 501 by bolts, and the synchronous pulley 202 is mounted to the shaft end of the feeding motor 201 by using the synchronous pulley tensioning sleeve 203. Torque is transmitted to the ball screw timing pulley 205 by the feed timing belt 204, and the ball screw timing pulley 205 and one end of the ball screw 209 are connected by the ball screw tension sleeve 206. The ball screw rear end bearing block 207 of the ball screw 209 is connected to the housing 501 by a bolt, and the ball screw front end bearing block 210 is connected to the housing 501. The ball screw tip bearing 211 connects the ball screw 209 and the ball screw tip bearing holder 210. This part is the feed module 2 power unit.
In this embodiment, the positioning unit of the feeding module 2 is: the linear guide rail 216 is fastened on the shell 501 through bolts, the front end and the side end of the linear guide rail 216 are positioned by a positioning structure designed on the shell 501, the sliding block 215 is connected with the linear guide rail 216 through a ball channel, the lower surface of the sliding table 213 is matched with the sliding block 215 and is connected through bolts, a bearing hole is formed in the middle of the sliding table 213, a pair of main shaft tail end bearings 214 is placed, and the tail end of the spline main shaft 106 is positioned. A through hole is formed in one side, close to the ball screw 209, of the sliding table 213, and the ball screw nut 212 is connected with the through hole through a bolt. The rotational motion of the feed motor 201 is converted into linear motion by the ball screw 209 and transmitted to the slide table 213, which pushes the feed motion of the spline spindle 106.
In this embodiment, the drill bushing 301 of the drill body fixing module 3 and the housing 501 are positioned by the flange structure 3011 through the positioning groove 3012 and fastened by bolts; the drill bushing 301 is clamped to a clamping bolt 3021 by a rotary clamping structure 3014, the drill bushing 301 is matched with a cylindrical surface of a template hole 3022, the drill template 302 is fastened with an upper template fixing frame 303 through a sliding chute 3031 and a bolt, an upper template 304 on the upper template fixing frame 303 and a lower template 305 of the lower template fixing frame 307 are matched with each other to clamp the composite material and the metal laminated material 503, the lower template fixing frame 307 is used for fixing the lower template 305, and the clamp bottom plate 306 provides rigid support and processing requirements for the whole clamp.
In this embodiment, the control module includes a PLC touch screen 401 and a control box 402; the PLC touch screen is used for setting drilling parameters, feeding distance and starting and stopping, the touch screen can be used for observing the machining parameters and the running state of the automatic feeding drill, the machining parameters can be changed in real time, signals are transmitted to the spindle motor and the feeding motor through the control box, and drilling movement is achieved.
In this embodiment, a protective cover 502 is further provided, and the protective cover 502 is mounted on the housing 501 through screws and used for shielding the spindle module 1 and the feeding module 2 to prevent the provided moving parts from injuring a user.

Claims (2)

1. The portable high-precision automatic feeding drilling equipment is characterized by comprising a main shaft module (1), a feeding module (2), a drill body fixing module (3), a control module (4) and a bearing frame;
the bearing frame is a shell (501), the shell (501) is a hollow structure with two opposite sides being through, and a protective cover (502) is fixed on one through side and used for wrapping the spindle motor (101) and the feeding motor (201); the guide rail bottom platform (5013) is positioned in the shell (501);
the main shaft module (1) comprises a main shaft motor (101), a main shaft pulley transmission device, a spline main shaft (106) and a special drill bit (107); the spindle motor (101) is fixed on the motor base (108), and the motor base (108) is fixed on the shell (501); the main shaft belt pulley transmission device comprises a main shaft synchronous belt pulley (102), a main shaft synchronous belt (103), a spline synchronous belt pulley (104) and a ball spline nut (105); a main shaft synchronous pulley (102) is arranged on an output shaft of a main shaft motor (101), and power is transmitted to a spline synchronous pulley (104) through a main shaft synchronous belt (103); the ball spline nut (105) is divided into an outer stator and an inner rotor, the outer stator is fixed in the shell (501), and the inner rotor is connected with the spline synchronous pulley (104) and receives power transmitted by the spline synchronous pulley (104); the inner rotor is provided with a ball channel, the spline spindle (106) penetrates through the ball channel, and a steel ball in the ball channel transmits power to the spline spindle (106) to realize rotation of the spline spindle (106); the front end of the spline main shaft (106) is in threaded connection with a special drill bit (107) to realize rotary cutting movement;
the feeding module (2) comprises a power unit and a positioning unit;
the power unit comprises a feeding motor (201) and a feeding belt transmission device; the feeding motor (201) is fixed on the feeding motor base (217), and the feeding motor base (217) is fixed on the shell (501) and is positioned below the motor base (108); the feeding belt transmission device comprises a feeding synchronous pulley (202), a feeding synchronous pulley tensioning sleeve (203), a feeding synchronous belt (204), a ball screw synchronous pulley (205), a ball screw tensioning sleeve (206), a ball screw rear end bearing seat (207), a ball screw rear end bearing (208), a ball screw (209), a ball screw front end bearing seat (210), a ball screw front end bearing (211) and a ball screw nut (212); the feeding synchronous pulley (202) is arranged on an output shaft of the feeding motor (201) through a feeding synchronous pulley tensioning sleeve (203), and power is transmitted to the ball screw synchronous pulley (205) through a feeding synchronous belt (204); the tail end of a ball screw (209) is fixed on a ball screw synchronous pulley (205) through a ball screw tensioning sleeve (206) and is supported through a ball screw rear end bearing (208) on a ball screw rear end bearing seat (207), and the other end of the ball screw synchronous pulley is supported through a ball screw front end bearing (211) on a ball screw front end bearing seat (210); a ball screw nut (212) sleeved on the ball screw (209) is fixed on the sliding table (213) and converts the rotary motion of the ball screw (209) into the linear motion of the sliding table (213);
the positioning unit comprises a sliding table (213), a main shaft tail end bearing (214), a sliding block (215) and a linear guide rail (216); the sliding table (213) is fixedly connected with a sliding block (215), and the sliding block (215) moves on the linear guide rail (216); the sliding table (213) is hollow and is provided with a pair of main shaft tail end bearings (214), and the rear end of the spline main shaft (106) is fixed on the inner ring of the main shaft tail end bearing (214);
the drill body fixing module (3) comprises a drill bushing (301), a drill plate (302), an upper template fixing frame (303), an upper template (304), a lower template (305), a clamp bottom plate (306) and a lower template fixing frame (307); the whole drill bush (301) is of a hollow structure, and the special drill bit (107) extends into the hollow structure; one end of the drill bushing (301) is a flange structure (3011) and is fixed outside the shell (501), and a positioning groove (3012) is arranged inside the drill bushing and is used for ensuring the position between the drill bushing (301) and the shell (501); the middle part of the drill bush (301) is provided with a dust suction port (3013) for timely drawing out cuttings; the other end of the drill bushing (301) is provided with a rotary clamping structure (3014) which is used for being matched with a clamping bolt (3021) on the drill template (302) and fixing the drill bushing (301) to bear all axial force and torque in the drilling process; meanwhile, the rotary clamping structure (3014) and the clamping bolt (3021) are matched to lock the drill bushing (301), so that an axial gap is avoided;
the clamp bottom plate (306) is provided with a rectangular through hole, and the front side and the rear side of the clamp bottom plate are respectively fixed with an upper template fixing frame (303) and a lower template fixing frame (307); the section of the upper template fixing frame (303) is in a shape of a square, opposite surfaces of the upper end and the lower end of the upper template fixing frame are correspondingly provided with template sliding grooves (3031), and the drill template (302) and the upper template (304) are arranged between the sliding grooves (3031) to move; the outer surfaces of the upper end and the lower end of the upper template fixing frame (303) are respectively provided with a front threaded hole (3032) for fixing the drill template (302) and the upper template (304); the structure of the lower template fixing frame (307) is similar to that of the upper template fixing frame (303), a lower template sliding groove (3072) is also formed in the lower template fixing frame, the lower template (305) is placed between the lower template sliding grooves (3072) to move, and the lower template (305) is fixed through a rear threaded hole (3071);
template holes (3022) with intervals are formed in the drill template (302) and are used for axially positioning the drill bushing (301); threaded holes are formed around the template hole (3022) and are used for additionally installing a clamping bolt (3021);
the upper template (304) and the lower template (305) are pressed and clamped with the composite material and the metal laminated material (503);
the control module (4) comprises a PLC touch screen (401) and a control box (402); the PLC touch screen (401) is used for setting drilling parameters, feeding distance and starting and stopping, and electric signals are transmitted to the spindle motor (101) and the feeding motor (201) through the control box (402), so that drilling movement is achieved.
2. The portable high-precision automatic feed drill according to claim 1, characterized in that the linear guide (216) is fixed on a guide rail bottom platform (5013) in the housing (501), and the two ends are respectively provided with a front boss (5012) and a side boss (5011) for limiting.
CN202210391604.8A 2022-04-14 2022-04-14 Portable high-precision automatic feeding drilling equipment Active CN114734074B (en)

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CN114734074B CN114734074B (en) 2024-03-22

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Citations (10)

* Cited by examiner, † Cited by third party
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