Dual-motor automatic feeding core drilling machine and control method thereof

Abstract

The invention provides a dual-motor automatic feeding core drilling machine and a control method thereof. A main shaft motor module and a feeding motor module of the automatic feeding core drilling machine are distributed on the two sides of a rotary feeding composite module, and the main shaft motor module and the feeding motor module are mechanically connected at the tail end of a driving motor. And the automatic feeding drill controller and the composite cable connector are concentrated on the right lower side of the equipment. The main shaft motor module and the feeding motor module respectively provide power sources for the rotating motion and the feeding motion of the screw rod for the rotating and feeding composite module, so that the rotating speed and the feeding speed of the screw rod are controlled; the screw rod drives the drill bit to do controlled rotary feeding motion, and drilling machining is completed; the main shaft motor realizes output of two power transmission paths of the main shaft motor module through switching of forward rotation and reverse rotation, and realizes invariable-speed output and 2.5-3.6-time acceleration output of the main shaft motor module through cooperation of different gear sets. Coverage of different rotating speeds and feeding speeds can be achieved on the gear set layout, and a stable closed structure, a reasonable hand holding space and a convenient operation mode are achieved.

Description

Technical Field

[0001] The invention relates to a high-performance automatic feeding drill structure, and in particular to an automatic feeding drill driven by dual motors and a control method thereof. Background Art

[0002] Automatic feed drilling equipment is a mechanical equipment used for drilling holes, which can automatically control the rotation and feed movement of the drill bit. Due to its high hole making accuracy and compact structure, it is widely used in on-site hole making operations of large mechanical equipment, such as aviation aircraft (reference patent CN117564804A), high-speed rail (reference patent CN214557580U) and other fields.

[0003] At present, since the automatic feed drill needs to be manually carried during the hole making process, its structure is often designed to be very compact to achieve lightweight design requirements and reduce the labor intensity of workers. Therefore, its structural form will change greatly with the change of technical conditions. US Patent US1989479983 proposes an over-torque protection mechanism for automatic feed drills powered by compressed air. Patent CN105228798 proposes an automatic feed drill with a modular structure, which mainly adds an external accessory to the traditional pneumatic automatic feed drill to realize air circuit logic control, thereby realizing the start-up, retraction and other operations of the equipment, and improving the convenience of operation. However, the automatic feed drill powered by pneumatic motors cannot achieve flexible control of the rotation speed and feed speed. In the context of the widespread use of composite materials, the drilling tool has also been transformed with dual motors to keep it compatible with the high speed and low feed of composite materials, the low speed and small feed of titanium alloys, and the high speed and feed processing requirements of aluminum alloys. To this end, patents US09387541B2 and EP3238874B1 proposed two layout concepts of gear sets that can control the rotation speed and feed speed by two motors. However, these two gear layout schemes do not combine the working conditions of material drilling processing, the current status of motors, gears, and clutches to provide a reasonable automatic feed drill power transmission solution. More importantly, they do not involve the operating logic and control method of the automatic feed drill system. Summary of the invention

[0004] Purpose of the invention: In view of this, the fundamental purpose of the present invention is to propose a dual-motor automatic feed drill core machine and a control method thereof, and to provide a new automatic feed drill gear and power system layout structure, which can achieve coverage of different rotation speeds and feed speeds in the gear group layout, and has a stable closed structure, reasonable hand-holding space, and convenient and fast operation.

[0005] Solution: In order to solve the above problems, the present invention adopts the following technical solutions: A dual-motor automatic feeding core drilling machine, which is controlled by two motors through a gear transmission system to achieve the rotation and feeding motion of the screw rod 16. The main implementation process is: Therefore, the device is composed of a spindle motor module 11, a feed motor module 12, a rotary feed composite module 13, an automatic feed core drilling machine controller 14, a composite cable connector 15, and an appearance cover 17.

[0006] Among them, the spindle motor is responsible for driving the screw rod 16 to rotate, and the feed motor drives the screw rod 16 to move forward and backward. The two work together to enable the screw rod 16 to drive the drill bit to achieve a precisely controlled rotational feed compound motion.

[0007] In order to achieve lightweight equipment, the spindle motor 101 and the feed motor 201 are preferably inner rotor motors, and the motor housing can be used as the equipment housing.

[0008] The spindle motor 101 is composed of a motor stator, a motor housing, a motor rotor gear shaft, and an encoder. The output end of the feed motor 101 is a gear shaft 102 .

[0009] Since drilling is a unidirectional process and the motor rotation is a bidirectional process, in order to expand the capacity of the spindle motor module, the motor can switch between forward and reverse directions to achieve the output of the two power transmission paths of the spindle motor module, thereby realizing the coordination of different gear sets to achieve the constant speed output and 2.5~3.6 times increased speed output of the spindle motor module. The specific increase rate is determined according to actual usage requirements.

[0010] The power of the spindle motor 101 is output through the gear shaft 102, which is a hollow structure with a needle clutch 103 placed inside. When the spindle motor rotor gear shaft 102 rotates clockwise (forward), the motor power is transmitted to the light rod part of the gear shaft 104 through the needle clutch 103, and the gear shaft 104 transmits the power to the bevel gear 105 through the key, and the bevel gear 105 transmits the power to the bevel gear 106. Under this power transmission path, the speed of the bevel gear 105 is the same as the speed of the motor 101; When the spindle motor rotor gear shaft 102 rotates counterclockwise (reverse), the motor power is transmitted to the gear 107 through the rotor gear shaft 102, and then to the next gear shaft 108. The gear 108 transmits the power to the needle clutch 110 inside the gear 109 through the polished rod part, thereby transmitting the power to the gear 109. The gear 109 transmits the power to the tooth surface of the gear shaft 104 through the tooth surface, realizing the rotation of the gear shaft 104. The gear shaft 104 drives the bevel gear 105 to rotate, and the bevel gear 105 drives the bevel gear shaft 106 to rotate. Under this power transmission path, the speed of the bevel gear 105 is 2.5~3.6 times the speed of the motor 101.

[0011] The feed motor 201 is an inner rotor motor, which is composed of a motor stator, a motor housing, a motor rotor gear shaft, and an encoder. The output end of the feed motor 201 is a gear shaft 202 .

[0012] The rear end of the feed motor 201 is a two-stage planetary reduction system. The gear shaft 202 at the end of the feed motor 201 serves as a sun gear to transmit power to the planetary system 204. The ring gear 203 of the planetary system is fixed, and the planetary carrier 205 serves as a power output end to reduce the power provided by the feed motor 201 and increase the torque output.

[0013] The power output by the spindle motor module 11 is input to the planetary reduction system composed of the ring gear 307, the planetary gear 306, and the compound gear 308 (as a planetary carrier) through the gear on one side of the bevel gear shaft 106. In this system, the ring gear 307 is mechanically connected and fixed to the housing 302.

[0014] The power output by the feed motor module 12 is transmitted to the bevel gear shaft 303 through the planet carrier 205 , and then delivered to the bevel gear 304 . The bevel gear 304 is mechanically connected and fixed to the gear shaft 305 .

[0015] The composite gear 308 transmits the rotational power to the gear shaft 309 through the outer gear. The inner side of the gear shaft 309 is a flat key, which can drive the screw rod 16 to rotate and allow the screw rod 16 to slide along the flat key inside the gear shaft 309 in the drilling direction.

[0016] The inner side of the compound gear 308 is an internal gear, which serves as a ring gear and forms a differential gear train with the planetary gear 310 , the sun gear shaft 305 , and the gear 311 (serving as a planet carrier).

[0017] The gear 311 transmits power to the gear 312 through the outer teeth, and the gear 312 has a screw nut inside, which cooperates with the screw 16. Therefore, the gear 312 can convert the rotational motion into the forward and backward translation of the screw 16.

[0018] The feed motor module 12 and the spindle motor module 11 are distributed on both sides of the rotary feed composite module, wherein the feed motor module 12 is mechanically connected to the housing 301, the spindle motor module 11 is mechanically connected to the housing 302, and the feed motor module 12 and the spindle motor module 11 are mechanically connected at the rear end cover of the feed motor 201 and the spindle motor 101. The combination of the three forms a hollow closed structure, which constitutes the main mechanical components of the automatic feed drill, and the structure provides a stable mechanical structure and a reasonable hand holding position for the automatic feed drill core machine.

[0019] The automatic feeding core drilling machine controller 14 is installed on the mechanical shell of the equipment, and introduces the control signal into the composite cable connector 15 through the wire through the equipment shell, thereby realizing the control of the automatic feeding core drilling machine and external signal communication.

[0020] Another advantage of this mechanical layout is that the power lines and signal lines of the feed motor 201 , the spindle motor 101 , and the automatic feed drill core machine controller 14 can be concentrated in one corner of the equipment, which can be conveniently protected by the appearance cover 17 .

[0021] Since human hands will directly touch the shell of the automatic feed drill core machine, the shell is also surface treated to prevent electric shock.

[0022] The automatic feed drilling core machine 1, the composite cable 2, the main controller 3, and the host computer 4 constitute an automatic feed drilling system.

[0023] The core machine 1 of the automatic feed drill is responsible for driving the drill bit to realize the drilling motion and the processing program storage, as well as the control of the processing process.

[0024] The composite cable 2 is responsible for the transmission of various media such as power, signals, and gas.

[0025] The main controller 3 is responsible for the overall control of the equipment, including program communication with the host computer 4, communication with the automatic feeding core drilling machine controller 14, control of the motor drive module, etc. The automatic feeding core drilling machine controller 14 contains a storage chip, which can realize the power-off storage function when the cable is disconnected.

[0026] The host computer 4 is responsible for the writing of processing programs, high-precision online monitoring, etc.

[0027] The control method of the dual-motor automatic feeding core drilling machine described above comprises the following steps: (1) The spindle motor module 11, the feed motor module 12, and the rotary feed composite module 13 are combined to form an automatic feed drilling core machine 1; wherein the feed motor module 12 and the spindle motor module 11 are distributed on both sides of the rotary feed composite module 13, and the three are combined to form a hollow closed structure; the core machine is assembled with a drill bit, a composite cable 5, a main controller 3, and a host computer 4 to form an automatic feed drilling system; the automatic feed drilling core machine 1 drives the drill bit to realize drilling processing movement and processing program storage, as well as control of the processing process; the main controller 3 is responsible for the overall control of the equipment, including program communication with the host computer 4, communication with the automatic feed drilling core machine controller 14, and control of the motor drive module; the controller 14 has a built-in storage chip, which can realize the power-off storage function when the cable is disconnected, and the host computer 4 is responsible for the writing of the processing program and high-precision online monitoring; (2) The processing program of the automatic feed drill is written or input through the host computer 4, and the processing information is transmitted to the storage chip of the automatic feed drill core machine controller 14 through the main controller 3 to realize the binding of the processing program and the drill bit; (3) The above-mentioned processing program is divided into two parts. The first part is the mechanical parameters of the core machine, including the gear set configuration information and motor speed and power information of the core machine; the second part is the processing parameters, including speed, feed speed, and stroke; the core machine mechanical parameter information is written by the equipment manufacturer and stored in the storage area 1 of the core machine handheld controller 14, and the processing parameters are written by the equipment operator and stored in the storage area 2 of the core machine handheld controller 14; during the writing process of the processing parameters, the upper computer will check the matching of the processing parameters according to the mechanical parameters to ensure that the core machine equipment function fully covers the processing parameter requirements; after the parameter inspection is completed, the upper computer transmits the processing parameters to the core machine handheld controller 14; (4) The transmission medium between the host computer 4 and the core machine handheld controller 14 is wired or wireless (the core machine, composite cable, and main controller are the smallest working units; parameter transmission can be through wireless media, but the core machine must be operated through the composite cable); (5) When the automatic feed drill core machine 1 establishes data communication with the main controller 3, the automatic feed drill core machine 1 performs the first data transmission with the main controller 3, and transmits the processing program in the storage area of ​​the handheld controller 14 of the automatic feed drill to the main controller 3. After the parameters are successfully matched, the main controller 3 sends a ready instruction to the handheld controller 14; (6) When the system consisting of the automatic feeding core drilling machine 1, the composite cable 5, and the main controller 3 is connected, the operator sends a control command to the main controller 3 through the automatic feeding core drilling machine controller 14, and the main controller 3 controls each functional component to realize the drilling operation. Beneficial Effects

[0028] (1) The present invention achieves a 2.5-3.6 times increase in output speed of the spindle motor module by coordinating different gear sets, thereby covering different rotation speeds and feed speeds.

[0029] (2) The spindle motor module and feed motor module of the present invention are distributed on both sides of the rotary feed composite module, and the automatic feed drill controller and the composite cable connector are concentrated on the lower right side of the device. The whole has a stable closed structure, reasonable hand holding space, and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Assembly drawing for automatic feed core drilling machine; Figure 2 Exploded view of the automatic feed core drilling machine; Figure 3 This is an exploded view of the spindle motor module; Figure 4 This is the exploded view of the feed motor module; Figure 5 It is an exploded view of the rotary feed compound module; Figure 6 This is the main mechanical structure view of the automatic feeding core drilling machine; Figure 7 The handheld end of the automatic feed drill equipped with a reversible bayonet nose tube is in full state; Figure 8 The handheld end of the automatic feed drill equipped with an expansion chuck nose tube is in full state; Fig. 9 This is a schematic diagram of the automatic feed drilling system; Fig.10 Write the flow chart for the core machine mechanical parameters and processing parameters; Fig.11 This is the drilling process flow chart of the automatic feed drilling system.

[0031] The main components of the attached drawings are described as follows: core machine-1, drill bit-2; main controller-3, upper machine position-4, composite cable-5; Spindle motor module-11, feed motor module-12, rotary feed composite module-13, automatic feed drill core machine controller-14, composite cable connector-15, screw rod-16, exterior cover-17; Spindle motor 101, gear shaft 102, needle roller clutch 103, gear shaft 104, bevel gear 105, bevel gear 106, housing 107, gear shaft 108, gear 109, needle roller clutch 110, housing 111; Feed motor-201, gear shaft-202, gear ring 203, planetary system-204, planet carrier-205; Housing 301, housing 302, bevel gear shaft 303, bevel gear 304, gear shaft 305, planetary gear 306, ring gear 307, compound gear 308, gear shaft 309, compound gear 311, gear 312. DETAILED DESCRIPTION

[0032] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0033] Figure 1~Figure 2 The mechanical structure of the dual-motor automatic feeding core drilling machine is shown. Figure 1 Assembly drawing of automatic feed core drilling machine, Figure 2 Exploded view of the automatic feed core drill machine.

[0034] The core machine 1 of the automatic feed drill has the following functions: 1. Drive the screw 16 to perform rotation and feed motion. The screw 16 and the drill bit 2 are connected by threads, thereby realizing controlled rotation and feed of the drill bit; 2. Realize the transmission of control signals, power current, gas, and liquid; 3. Realize the handheld terminal control and processing program storage of the automatic feed drill.

[0035] In order to realize the above two functions of the automatic feeding core drilling machine 1, its structure is mainly divided into the following parts: spindle motor module 11, feed motor module 12, rotary feed composite module 13, automatic feeding core drilling machine controller 14, composite cable connector 15, appearance cover 17, screw 16. The specific functions of each component are as follows: the spindle motor module 11 and the feed motor module 12 are responsible for providing two independent power sources, and inputting them into the rotary feed composite module 13 together, so as to realize the control of the rotation speed and feed speed of the screw 16. The composite cable connector 15 is responsible for introducing external power into the spindle motor module 11 and the feed motor module 12, and transmitting the data of the spindle motor module 11, the feed motor module 12, and the automatic feeding core drilling machine controller 14 to the outside. In addition, it also has the purpose of compressed air transmission and cooling and lubricating medium transmission. The automatic feeding core drilling machine controller is responsible for realizing the external communication between the equipment and the person. It has multiple buttons on it, and the operator can use the buttons to realize the control operations such as starting and stopping the equipment. It also has a screen to display the current operation of the equipment. The appearance cover 17 is mainly used to protect the cables around the automatic feeding core drilling machine controller 14 and the composite cable connector 15 to prevent them from being damaged during use.

[0036] Figure 3 The exploded view of the spindle motor module 11 includes: a spindle motor 101, an external housing composed of a housing 111 and a housing 107, and an internal power transmission path composed of gear components such as gears and gear shafts.

[0037] Here, since the housing of the spindle motor 101 needs to be in direct contact with the operator, the spindle motor 101 is preferably an inner rotor motor with a rated power of 600-1300 W. It consists of a motor stator, a motor housing, a motor rotor gear shaft, and an encoder, and the output end of the feed motor 101 is a gear shaft.

[0038] Since drilling is a unidirectional process and motor rotation is a bidirectional process, in order to expand the capabilities of the spindle motor module, the motor can switch between forward and reverse directions to achieve the output of the two power transmission paths of the spindle motor module, thereby achieving the coordination of different gear sets and realizing the constant speed output and 3 times faster output of the spindle motor module.

[0039] The power of the spindle motor 101 is output through the gear shaft 102, which is a hollow structure with a needle clutch 103 placed inside. When the spindle motor rotor gear shaft 102 rotates clockwise (forward), the motor power is transmitted to the light rod part of the gear shaft 104 through the needle clutch 103, and the gear shaft 104 transmits the power to the bevel gear 105 through the key, and the bevel gear 105 transmits the power to the bevel gear 106. Under this power transmission path, the speed of the bevel gear 105 is the same as the speed of the motor 101.

[0040] When the spindle motor rotor gear shaft 102 rotates counterclockwise (reverse), the motor power is transmitted to the gear 107 through the rotor gear shaft 102, and then to the next gear shaft 108. The gear shaft 108 transmits the power to the needle clutch 110 inside the gear 109 through the polished rod part, thereby transmitting the power to the gear 109. The gear 109 transmits the power to the tooth surface of the gear shaft 104 through the tooth surface, realizing the rotation of the gear shaft 104. The gear shaft 104 drives the bevel gear 105 to rotate, and the bevel gear 105 drives the bevel gear shaft 106 to rotate. Under this power transmission path, the speed of the bevel gear 105 is three times the speed of the motor 101.

[0041] Figure 4 The feed motor module 11 is specifically exploded, and it is mainly composed of a feed motor 201 and a housing 203 forming an external housing, and gear components such as a gear shaft 203, a planetary system 204, and an output planetary carrier 205 forming an internal power transmission path.

[0042] Here, since the housing of the feed motor 201 needs to be in direct contact with the operator, the feed motor 201 is preferably an inner rotor motor with a rated power of 75 W to 200 W. It is composed of a motor stator, a motor housing, a motor rotor gear shaft, and an encoder, and the output end of the feed motor 201 is a gear shaft.

[0043] The specific transmission process of the power of the feed motor module is as follows: the rear end of the feed motor 201 is a two-stage planetary system, and the gear shaft 202 at the end of the feed motor 201 serves as a sun gear to transmit power to the planetary system 204. The ring gear 203 of this planetary system is fixed, and the planetary carrier 205 serves as the power output end to reduce the speed and increase the torque output of the power provided by the feed motor.

[0044] Figure 5 This is an exploded view of the rotary feed composite module 13. The system is composed of a housing 301 and a housing 302 forming an external housing, and a plurality of gears and planetary gear trains forming an internal power transmission system.

[0045] The power output by the spindle motor 101 of the spindle motor module 11 is input to the planetary reduction system composed of the ring gear 307, the planetary gear 306, and the gear 308 (planet carrier) through the bevel gear 106. In this system, the gear 307 is connected and fixed to the housing 302. The power output by the feed motor 201 of the feed motor module 12 is transmitted to the bevel gear shaft 303 through the planetary carrier 205, and then transmitted to the bevel gear 304, and the bevel gear 304 is connected and fixed to the gear shaft 305. The gear 308 transmits the rotational power to the gear shaft 309 through the outer gear. The inner side of the gear shaft 309 is a flat key, which can drive the rotation of the rotating feed composite screw 16 and allow the screw 16 to slide along the gear shaft 309 in the drilling direction. The inner side of the gear 308 is an internal gear, which forms a differential gear system with the planetary gear 310, the gear shaft (sun gear shaft) 305, the gear 311 (planet carrier), and the gear 308 (ring gear). The gear 311 transmits power to the gear 312 through the teeth on the outside. The inner side of the gear 312 is a screw nut, which cooperates with the screw 16 to convert the rotational motion of the gear 312 into the forward and backward movement of the screw 16.

[0046] Figure 6 The mechanical components of the automatic feeding core drilling machine composed of the spindle motor module 11, the feed motor module 12, and the rotary feed compound module 13 are shown. The feed motor module 12 and the spindle motor module 11 are distributed on both sides of the rotary feed compound module 13, wherein the feed motor module 12 is mechanically connected to the housing 301, the spindle motor module 11 is mechanically connected to the housing 302, and the feed motor module 12 and the spindle motor module 11 are mechanically connected at the rear end cover of the feed motor 201 and the spindle motor 101. The spindle motor module 11, the feed motor module 12, and the rotary feed compound module 13 form a hollow closed structure, which ensures the stability of the structure and provides a reasonable hand holding space, that is, the position of the tiger's mouth holding the housing 111, and the four fingers are prevented from being in the above-mentioned central control closed structure.

[0047] Figure 7 and Figure 8 Two automatic feed drilling machines equipped with this automatic feed drilling core machine were displayed.

[0048] Figure 7 The automatic feed drill handheld end equipped with a transfer bayonet nose tube 2 is in a complete state.

[0049] Figure 8 The automatic feed drill handheld end equipped with an expansion chuck type nose tube 3 is in a complete state.

[0050] Combine the following Fig. 9 Taking the automatic feed drill equipped with a transfer bayonet nose tube as an example, the working process of the automatic feed drill equipment is specifically described: The automatic feed drill core machine 1, the composite cable 2, the main controller 3, and the host computer 4 constitute an automatic feed drill system. The core machine 1 of the automatic feed drill is responsible for driving the drill bit to realize the drilling motion and the storage of the processing program, as well as the control of the processing process. The composite cable 2 is responsible for the transmission of various media such as power, signals, and gas. The main controller 3 is responsible for the overall control of the equipment, including program communication with the host computer 4, communication with the automatic feed drill core machine controller 14, and control of the motor drive module. The automatic feed drill core machine controller 14 contains a storage chip, which can realize the power-off storage function when the cable is disconnected. The host computer 4 is responsible for the writing of the processing program, high-precision online monitoring, etc.

[0051] Reference Fig.10 , 11 The control method of the above dual-motor automatic feeding core drilling machine has the following steps: (1) The spindle motor module 11, the feed motor module 12, and the rotary feed composite module 13 are combined to form an automatic feed drilling core machine 1; wherein the feed motor module 12 and the spindle motor module 11 are distributed on both sides of the rotary feed composite module 13, and the three are combined to form a hollow closed structure; the core machine is assembled with a drill bit, a composite cable 5, a main controller 3, and a host computer 4 to form an automatic feed drilling system; the automatic feed drilling core machine 1 drives the drill bit to realize drilling processing movement and processing program storage, as well as control of the processing process; the main controller 3 is responsible for the overall control of the equipment, including program communication with the host computer 4, communication with the automatic feed drilling core machine controller 14, and control of the motor drive module; the controller 14 has a built-in storage chip, which can realize the power-off storage function when the cable is disconnected, and the host computer 4 is responsible for the writing of the processing program and high-precision online monitoring; (2) The processing program of the automatic feed drill is written or input through the host computer 4, and the processing information is transmitted to the storage chip of the automatic feed drill core machine controller 14 through the main controller 3 to realize the binding of the processing program and the drill bit; (3) The above-mentioned processing program is divided into two parts. The first part is the mechanical parameters of the core machine, including the gear set configuration information and motor speed and power information of the core machine; the second part is the processing parameters, including speed, feed speed, and stroke; the core machine mechanical parameter information is written by the equipment manufacturer and stored in the storage area 1 of the core machine handheld controller 14, and the processing parameters are written by the equipment operator and stored in the storage area 2 of the core machine handheld controller 14; during the writing process of the processing parameters, the upper computer will check the matching of the processing parameters according to the mechanical parameters to ensure that the core machine equipment function fully covers the processing parameter requirements; after the parameter inspection is completed, the upper computer transmits the processing parameters to the core machine handheld controller 14; (4) The transmission medium between the host computer 4 and the core machine handheld controller 14 is wired or wireless; (5) When the automatic feed drill core machine 1 establishes data communication with the main controller 3, the automatic feed drill core machine 1 performs the first data transmission with the main controller 3, and transmits the processing program in the storage area of ​​the handheld controller 14 of the automatic feed drill to the main controller 3. After the parameters are successfully matched, the main controller 3 sends a ready instruction to the handheld controller 14; (6) When the system consisting of the automatic feeding core drilling machine 1, the composite cable (5), and the main controller 3 is connected, the operator sends a control command to the main controller 3 through the automatic feeding core drilling machine controller 14, and the main controller 3 controls each functional component to realize the drilling operation.

Claims

1. A dual-motor automatic feeding core drilling machine, characterized in that: include: A spindle motor module (11), a feed motor module (12), a rotary feed composite module (13), an automatic feed core drilling machine controller (14), and a composite cable connector (15); the above modules are assembled and placed as a whole in an exterior cover (17); The feed motor module (12) and the spindle motor module (11) are distributed on both sides of the rotary feed composite module (13), and the three are combined to form a hollow closed structure, which constitutes the main mechanical transmission structure of the automatic feed core drilling machine; the screw rod (16) and the drill bit (2) are connected by threads; the screw rod (16) and the rotary feed composite module (13) are connected by threads and flat keys; the automatic feed core drilling machine controller (14) and the composite cable connector (15) are connected to the spindle motor module (11); The spindle motor module (11) and the feed motor module (12) are responsible for providing two independent power sources, and inputting them into the rotary feed composite module (13) to achieve the control of the rotation speed and feed speed of the screw rod (16); the spindle motor module is responsible for providing the rotary motion of the screw rod, and the feed motor module controls the feed motion of the screw rod. The two work together to enable the screw rod (16) to drive the drill bit (2) to achieve controlled rotary feed motion, thereby achieving drilling processing.

2. A dual-motor automatic feeding core drilling machine according to claim 1, characterized in that: The spindle motor module (11) comprises a spindle motor (101), an internal power transmission path composed of gear components, and an external housing; the spindle motor (101) is an inner rotor motor with a rated power of 600-1300W; the output structure gear shaft (102) of the spindle motor (101) is a hollow structure, and a needle clutch (103) is placed inside the structure; when the spindle motor gear shaft (102) rotates clockwise, the rotation speed of the bevel gear (105) is the same as the rotation speed of the gear shaft (102); when the spindle motor gear shaft (102) rotates counterclockwise, the rotation speed of the bevel gear (105) is 2.5-3.6 times the rotation speed of the gear shaft (102).

3. The dual-motor automatic feeding core drilling machine according to claim 1, characterized in that: The feed motor module (11) is an inner rotor motor with a rated power of 75W-200W, comprising a motor stator, a motor housing, a motor rotor gear shaft, and an encoder, and the output end of the feed motor (201) is a gear shaft; The power transmission process of the feed motor module is as follows: the rear end of the feed motor (201) is a two-stage planetary system, the gear shaft (202) at the end of the feed motor (201) serves as a sun gear to transmit power to the planetary system (204), the ring gear (203) of the planetary system is fixed, and the planet carrier (205) serves as a power output end to reduce the speed and increase the torque output of the power provided by the feed motor.

4. The dual-motor automatic feeding core drilling machine according to claim 2 is characterized in that: The power of the spindle motor (101) is output through the gear shaft (102). When the spindle motor gear shaft (102) rotates clockwise, the motor power is transmitted to the smooth rod portion of the gear shaft (104) through the needle clutch (103). The gear shaft (104) transmits the power to the bevel gear (105) through the key. Under this power transmission path, the output speed of the bevel gear (105) is the same as that of the motor (101). When the spindle motor rotor 101 rotates counterclockwise, the motor power is transmitted to the gear (107) through the rotor shaft (101), and then transmitted to the next gear shaft (108). The gear shaft (108) transmits the power through the smooth rod portion through the gear (109). The internal needle clutch (110) transmits power to the gear (109), and the gear (109) transmits power to the tooth surface of the gear shaft (104) through the external tooth surface. The gear shaft (104) drives the bevel gear (105) to rotate. Under this power transmission path, the bevel gear (105) transmits power to the bevel gear (106). The rear end of the feed motor (201) is a multi-stage planetary system. The gear shaft (202) at the end of the feed motor (201) serves as a sun gear to transmit power to the planetary system (204). The ring gear (203) of the planetary system is fixed, and the planet carrier (205) serves as a power output end to reduce the speed and increase the torque output of the power provided by the feed motor.

5. The dual-motor automatic feeding core drilling machine according to claim 1, characterized in that: The rotary feed composite module includes an external housing, and an internal power transmission system composed of gears and a planetary gear train; wherein the gear on one side of the bevel gear (106) shaft serves as a sun gear, and inputs a planetary reduction system composed of a ring gear (307), a planetary gear (306), and a composite gear (308); in the system, the ring gear (307) is connected and fixed to the housing (302), the spur gear on one side of the bevel gear (106) shaft serves as a sun gear input power, and the composite gear (308) serves as a planet carrier for power output; the power output by the feed motor module is transmitted to the bevel gear shaft (303) through the planet carrier (205), and then transmitted to the bevel gear (304), and the bevel gear (304) is mechanically connected and fixed to the gear shaft (305); The composite gear (308) transmits the rotational power to the gear shaft (309) through the outer gear. The inner side of the gear shaft (309) is a flat key, which can drive the screw (16) to rotate and allow the screw (16) to slide along the flat key on the inner side of the gear shaft (309) in the drilling direction. The inner side of the composite gear (308) is an internal gear, which forms a differential gear train with the planetary gear (310), the sun gear shaft (305), the gear (311), and the composite gear (308). The gear (311) transmits the power to the gear shaft (312) through the outer teeth. The inner side of the gear shaft (312) is a screw nut, which cooperates with the screw (16) so that the gear shaft (312) can convert the rotational motion into the forward and backward translation of the screw (16).

6. The control method of the dual-motor automatic feeding core drilling machine according to claim 1 is characterized in that: The spindle motor module (11) and the feed motor module (12) respectively provide the rotary feed composite module (13) with power sources for the rotary motion and feed motion of the screw rod, thereby achieving controlled rotation speed and feed speed of the screw rod (16); the screw rod (16) drives the drill bit (2) to perform controlled rotary feed motion, thereby completing the drilling process; The spindle motor realizes the output of two power transmission paths of the spindle motor module by switching between forward and reverse rotations. By cooperating with different gear sets, the spindle motor module can achieve an output speed increase of 2.5 to 3.6 times.

7. The control method of the dual-motor automatic feeding core drilling machine according to claim 6 is characterized in that: Here are the steps: (1) A spindle motor module (11), a feed motor module (12), and a rotary feed composite module (13) are combined to form an automatic feed drilling core machine (1); wherein the feed motor module (12) and the spindle motor module (11) are distributed on both sides of the rotary feed composite module (13), and the three are combined to form a hollow closed structure; the core machine is assembled with a drill bit, a composite cable (5), a main controller (3), and a host computer (4) to form an automatic feed drilling system; The core machine (1) of the automatic feed drill drives the drill bit to realize drilling motion and process program storage, as well as control of the process; the main controller (3) is responsible for overall control of the equipment, including program communication with the host computer (4), communication with the automatic feed drill core machine controller (14), and control of the motor drive module; the controller (14) has a built-in storage chip, which can realize a power-off storage function in the event of cable disconnection; the host computer (4) is responsible for the writing of the process program and high-precision online monitoring; (2) The processing program of the automatic feed drill is written or input through the host computer (4), and the processing information is transmitted to the storage chip of the automatic feed drill core machine controller (14) through the main controller (3), so as to realize the binding of the processing program and the drill bit; (3) The above-mentioned processing program is divided into two parts. The first part is the mechanical parameters of the core machine, including the gear set configuration information and the motor speed and power information of the core machine; the second part is the processing parameters, including the speed, feed speed and stroke; the core machine mechanical parameter information is written by the equipment manufacturer and stored in the storage area 1 of the core machine handheld controller (14), and the processing parameters are written by the equipment operator and stored in the storage area 2 of the core machine handheld controller (14); during the writing process of the processing parameters, the upper computer will check the matching of the processing parameters according to the mechanical parameters to ensure that the core machine equipment function fully covers the processing parameter requirements; after the parameter check is completed, the upper computer transmits the processing parameters to the core machine handheld controller (14); (4) The transmission medium between the host computer (4) and the core machine handheld controller (14) is wired or wireless; (5) When the automatic feed drilling core machine (1) establishes data communication with the main controller (3), the automatic feed drilling core machine (1) and the main controller (3) perform the first data transmission, and transmit the processing program in the storage area of ​​the handheld controller (14) of the automatic feed drilling to the main controller (3). After the parameters are successfully matched, the main controller (3) sends a ready instruction to the handheld controller (14); (6) When the system consisting of the automatic feeding core drilling machine (1), the composite cable (5), and the main controller (3) is connected, the operator sends a control command to the main controller (3) through the automatic feeding core drilling machine controller (14), and the main controller (3) controls each functional component to realize the drilling operation.

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