CN109759775B - Ultrasonic cold forging device for inner and outer walls of aluminum alloy drill rod - Google Patents

Ultrasonic cold forging device for inner and outer walls of aluminum alloy drill rod Download PDF

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Publication number
CN109759775B
CN109759775B CN201811617196.3A CN201811617196A CN109759775B CN 109759775 B CN109759775 B CN 109759775B CN 201811617196 A CN201811617196 A CN 201811617196A CN 109759775 B CN109759775 B CN 109759775B
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drill rod
actuator
screw
rod
cold forging
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CN109759775A (en
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梁健
尹浩
孙建华
李鑫淼
李宽
张金昌
王成彪
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China University of Geosciences Beijing
Institute of Exploration Technology Chinese Academy of Geological Sciences
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China University of Geosciences Beijing
Institute of Exploration Technology Chinese Academy of Geological Sciences
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Abstract

The ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod comprises a base, wherein a drill rod clamping and rotating mechanism, an outer actuator axial movement mechanism and an inner actuator axial movement mechanism are arranged on the base, the drill rod clamping and rotating mechanism comprises a first motor and a drill rod lateral support assembly, one end of the drill rod is driven to rotate by the first motor, and the other end of the drill rod is supported by the drill rod lateral support assembly; the outer actuator axial movement mechanism drives the outer actuator assembly to axially move along the outer wall of the drill rod through spiral transmission by a second motor; the inner actuator axial movement mechanism drives the inner actuator assembly to axially move along the inner wall of the drill rod through the oil cylinder and the telescopic frame. The invention can realize the full-coverage cold forging processing of the actuator along the inner wall and the outer wall of the drill rod, has the characteristics of high working efficiency, good processing quality, easy control of the strengthening layer and the like, and can provide technical support for manufacturing the long-service-life and high-reliability aluminum alloy drill rod.

Description

Ultrasonic cold forging device for inner and outer walls of aluminum alloy drill rod
Technical Field
The invention relates to a drill rod machining device, in particular to an ultrasonic cold forging machining device for the inner wall and the outer wall of an aluminum alloy drill rod.
Background
Drill pipe is the most dominant and most damaged component of drilling equipment. Through the drill string formed by the drill rods, the delivery of torque and drilling pressure, the transportation of drilling fluid, the core extraction, the bit replacement and the accident handling are to be realized in the drilling process, and are the primary factors for determining the exploration depth, and the drilling depth capacity of the drill string directly determines whether precious physical data such as a core deeper underground can be acquired or not, and whether a logging channel can be established to acquire more geological information. In ultra-deep well drilling, when the drilling exceeds a certain depth, the self weight of the drill rod string can damage the drill rod, and the performance of the aluminum alloy drill rod is more important. Aluminum alloys face serious wear and corrosion problems as do other metals. In the drilling process, the motion state of the drill string is quite complex, and mainly comprises: rotation, whirl, longitudinal vibration, torsional vibration, transverse vibration and the like, and the complex working conditions cause frequent friction and abrasion of the aluminum alloy drill stem and a shaft, so that the drill stem is biased to be worn and is easy to generate damages such as scratches, indentations and the like, the bearing capacity of the drill stem is reduced, and the hidden trouble of accidents in the shaft is increased; in addition, the aluminum alloy drill rod has the characteristic of mechanical property attenuation under the high-temperature condition of an ultra-deep well, and the tissue structure, the mechanical property and the wear property of the aluminum alloy drill rod are all deteriorated. Meanwhile, under natural conditions, a natural oxide film with a layer thickness of about 4nm is easy to form on the surface of the aluminum alloy, but the film is porous and uneven, and is difficult to resist corrosion in severe environments, so that drill rod corrosion failure is caused. The mud systems such as low solid phase, no solid phase, water base, oil base and the like in the well drilling process contain organic and inorganic additives, and the drilling fluid has stronger corrosiveness under the action of high temperature and high pressure in the well, so that the aluminum alloy drill rod is extremely easy to generate chemical or electrochemical reaction; meanwhile, the drill string is also subjected to larger tensile stress caused by dead weight, the elongated grain boundary provides a channel for corrosion, and the corrosion products are easy to peel off due to frictional wear with the well wall, so that the drill string is extremely easy to corrode and fail due to complex service working conditions. Facing the problems of abrasion and corrosion, there is an urgent need to enhance the abrasion resistance and corrosion resistance of the inner and outer surfaces of the drill pipe.
Disclosure of Invention
The invention aims to provide an ultrasonic cold forging device for the inner and outer walls of an aluminum alloy drill rod, which can be used for realizing ultrasonic cold forging of the inner and outer surfaces of the drill rod, so that the wear resistance, corrosion resistance and hardening performance of the inner and outer surfaces of the drill rod are improved.
The problems of the invention are solved by the following technical proposal:
the ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod comprises a base, wherein a drill rod clamping and rotating mechanism, an outer actuator axial movement mechanism and an inner actuator axial movement mechanism are arranged on the base, the drill rod clamping and rotating mechanism comprises a first motor and a drill rod lateral support assembly, one end of the drill rod is driven to rotate by the first motor, and the other end of the drill rod is supported by the drill rod lateral support assembly; the outer actuator axial movement mechanism drives the outer actuator assembly to axially move along the outer wall of the drill rod through spiral transmission by a second motor; the inner actuator axial movement mechanism drives the inner actuator assembly to axially move along the inner wall of the drill rod through the oil cylinder and the telescopic frame.
The inner actuator assembly is positioned in a hole of the drill rod and comprises two rotating discs which are symmetrically arranged, a fixed disc is sleeved in the hole of each rotating disc, and a bearing is arranged between the rotating disc and the fixed disc; the periphery of the rotating disc is uniformly provided with adjustable support rods, the end parts of each adjustable support rod are provided with idler wheels, and the idler wheels are in rolling friction with the inner wall of the drill rod; a plurality of actuators are arranged between the two fixed discs, the two sides of each actuator are respectively hinged with the proximal ends of the actuator support rods, and the distal ends of the two actuator support rods are respectively hinged with the fixed discs; a plurality of sets of pre-tightening assemblies are uniformly distributed between the two fixed discs, each set of pre-tightening assembly consists of a tension spring, a pre-tightening nut and a pre-tightening screw rod which are sequentially connected, and two ends of each pre-tightening assembly are respectively connected with the two fixed discs.
In the ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod, the right support plate is arranged on one side of the base, which is far away from the first motor, and the second motor is fixed on the upper part of the right support plate; the external actuator assembly comprises a screw mounting frame, an actuator mounting seat and a pressure spring adjusting plate, wherein the screw mounting frame and the actuator mounting seat are of an inserting structure, the screw mounting frame and the actuator mounting seat are locked by screws, the actuator mounting seat is provided with a plurality of actuators, the top of each actuator is provided with a pressure spring, the pressure spring adjusting plate is positioned on the upper part of the pressure spring, an adjusting screw matched with the screw mounting frame in a threaded manner penetrates through the top of the screw mounting frame, and the bottom end of the adjusting screw is pressed on the pressure spring adjusting plate; the screw mounting frame is provided with two screws, each screw is in threaded fit with one screw, two ends of each screw are respectively supported by the left support plate and the right support plate, the right ends of the two screws are respectively connected with one driven gear, the two driven gears are symmetrically arranged on two sides of the driving gear, each driven gear is respectively connected with the driving gear in a meshed mode, and the driving gear is connected with the output shaft of the second motor in a key mode.
Above-mentioned aluminum alloy drilling rod inner and outer wall ultrasonic wave cold forging processingequipment, drilling rod side direction support assembly parallel arrangement both sides is to the support, and the opposite face of both sides to the support sets up the side direction respectively and supports the gyro wheel, and each side direction support rigid coupling screw opposite in spiral direction side direction supports the screw respectively, and the side direction supports the screw and supports screw thread fit with both sides respectively, and the side direction supports the screw both ends and is supported by the screw support, and the one end of side direction support screw is equipped with the handle.
Above-mentioned aluminum alloy drilling rod inner and outer wall ultrasonic wave cold forging processingequipment, rigid coupling tubular nipple joint in the right branch fagging, tubular nipple joint's internal diameter matches with the drilling rod internal diameter, and tubular nipple joint's external diameter matches with the drilling rod external diameter, and tubular nipple joint butt joint drilling rod right-hand member portion.
Above-mentioned aluminum alloy drilling rod inner and outer wall ultrasonic wave cold forging processingequipment, the expansion bracket comprises a plurality of parallelogram link mechanism, and the expansion bracket passes right branch fagging and tubular nipple joint, and the expansion bracket end is connected with the fixed disk that is close to the expansion bracket, and the piston rod of hydro-cylinder is connected to the head end of expansion bracket, and the guide block is connected to the hydro-cylinder, is equipped with two guide slots to the guide of expansion bracket head end connecting rod motion direction on the guide block.
According to the ultrasonic cold forging device for the inner wall and the outer wall of the aluminum alloy drill rod, the telescopic rod is further arranged between the two rotating discs of the inner actuator assembly, the axis of the telescopic rod is coaxial with the axis of the two fixed discs, and the two ends of the telescopic rod are respectively abutted to the fixed discs.
According to the ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod, the first motor is connected with the chuck through the main shaft of the transmission case.
According to the ultrasonic cold forging device for the inner wall and the outer wall of the aluminum alloy drill rod, the bottom of each lateral support is provided with the guide rail, the direction of the guide rail is perpendicular to the axial direction of the drill rod, the lateral supports are in sliding fit with the guide rails, and the guide rails are fixed with the base.
According to the ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod, the actuators of the inner actuator assembly and the pre-tightening assembly are distributed at intervals.
The invention is provided with an inner actuator axial movement mechanism, an outer actuator axial movement mechanism and a drill rod clamping and rotating mechanism, and can realize full-coverage cold forging processing of the actuators along the inner wall and the outer wall of the drill rod by arranging the barrel-shaped pup joint; the inner and outer actuator assemblies can respectively adjust the loading force applied by the actuator to the inner and outer surfaces of the drill rod, and the inner and outer surfaces of the drill rod can be provided with a nano-scale to micro-scale reinforcing layer by adjusting the loading force of the actuator, the rotating speed of the drill rod and the axial speeds of the inner and outer actuator assemblies and matching with the control of the impact frequency and the amplitude of the actuator, so that the corrosion resistance and the hardness of the inner and outer surfaces of the drill rod are improved. The invention has the characteristics of high working efficiency, good processing quality, easy control of the strengthening layer and the like, and can provide technical support for manufacturing the aluminum alloy drill rod with long service life and high reliability.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic structural view of a lateral support assembly;
FIG. 3 is a C-view of the outer actuator assembly;
FIG. 4 is a D-view of the inner actuator assembly;
FIG. 5 is a cross-sectional view A-A of FIG. 4;
fig. 6 is a B-B cross-sectional view of fig. 4.
The reference numerals in the figures are: the device comprises a first motor, 2, a left support plate, 3, a transmission case, 4, a chuck, 5, a drill rod, 6, an outer actuator assembly, 6-1, a nut mounting rack, 6-2, a driven gear, 6-3, a driving gear, 6-4, a pressure spring, 6-5, an adjusting screw, 6-6, a pressure spring adjusting plate, 6-7, an actuator mounting seat, 7, a screw rod, 8, an inner actuator assembly, 8-1, a roller, 8-2, an adjustable support rod, 8-3, a rotating disc, 8-4, a fixed disc, 8-5, a tension spring, 8-6, a pretensioning nut, 8-7, a pretensioning screw rod, 8-8, a telescopic rod, 8-9, an actuator support rod, 9, a telescopic bracket, 10, a barrel nipple, 11, a right support plate, 12, a second motor, 13, an oil cylinder, 14, a limiting block, 15, a base, 16, a lateral support assembly, 16-1, a lateral support screw, 16-3, a lateral support handle, 16-5, 16-6, 16-7, a lateral support seat, 16-2, a lateral support screw, a lateral support handle, 16-7, a screw rod, a lateral support seat, 16-6, a lateral support handle, 16-6, a lateral support seat, a screw rod, a 18, a main shaft actuator, and a main shaft.
Detailed Description
Referring to fig. 1, the invention comprises a base 15, on which a drill rod clamping and rotating mechanism for driving a drill rod 5 to rotate, an outer actuator axial movement mechanism for performing cold forging on the outer wall of the drill rod and an inner actuator axial movement mechanism for performing cold forging on the inner wall of the drill rod are arranged. The left support plate 2 and the right support plate 11 are respectively fixed on two sides of the base, the drill rod clamping and rotating mechanism comprises a first motor 1 and a drill rod lateral support assembly 16, the first motor is fixed at the left support plate, a first motor output shaft drives a main shaft 17 to rotate through a transmission case 3, the main shaft drives a chuck 4 to rotate, the chuck clamps the left side of a drill rod, and the right side of the drill rod is supported by the drill rod lateral support assembly. The outer actuator axial movement mechanism and the inner actuator axial movement mechanism are both provided with an actuator 18, and the actuator is a piezoceramic actuator. The outer actuator axial movement mechanism drives the outer actuator assembly 6 to axially move along the outer wall of the drill rod through screw transmission by a second motor 12 fixed on the right support plate. The inner actuator axial movement mechanism drives the inner actuator assembly 8 to axially move along the inner wall of the drill rod through the oil cylinder 13 and the telescopic frame 11. In order to realize the continuity of the processing of the tail end of the drill rod, a cylindrical short section 10 is fixedly connected on the right supporting plate, the inner diameter of the cylindrical short section is matched with the inner diameter of the drill rod, the outer diameter of the cylindrical short section is matched with the outer diameter of the drill rod, and the cylindrical short section is abutted to the right end part of the drill rod.
Referring to fig. 1 and 3, the outer actuator assembly includes a nut mount 6-1, an actuator mount 6-5, and a compression spring adjustment plate 6-6. The nut mounting frame and the actuator mounting seat are of an inserting structure, and are fixed by screws. The actuator mount is fitted with a plurality of actuators 18, which are aligned axially along the drill rod, three actuators being employed in the illustrated embodiment. A pressure spring 6-4 is arranged between the top of each actuator and the nut mounting frame, a pressure spring adjusting plate is arranged on the upper part of the pressure spring, an adjusting screw 6-5 which is in threaded fit with the nut mounting frame penetrates through the top of the nut mounting frame, and the end part of the adjusting screw is pressed on the pressure spring adjusting plate. The locking screw is rotated in the positive and negative directions, the pressure spring adjusting plate can slide up and down relative to the actuator mounting seat, and the static pressure applied on the pressure spring by the pressure spring adjusting plate is adjusted, so that the pressure of the actuator contact relative to the outer wall of the drill rod is adjusted. The screw mounting frame is provided with two screws, each screw is in threaded fit with one screw rod 7, two ends of each screw rod are respectively supported by a left supporting plate and a right supporting plate, the right ends of the two screw rods are respectively connected with a driven gear 6-2, the two driven gears are symmetrically arranged on two sides of a driving gear 6-3, each driven gear is respectively connected with the driving gear in a meshed mode, and the driving gear is connected with an output shaft key of a second motor. The stability of the movement of the actuator mounting seat can be ensured by adopting double-screw transmission.
Referring to fig. 1 and 4-6, an inner actuator assembly is positioned within the drill pipe bore. The inner actuator assembly comprises two rotating discs 8-3 which are symmetrically arranged, a fixed disc 8-4 is sleeved in each rotating disc, and a bearing is arranged between the rotating discs and the fixed disc. The periphery equipartition adjustable bracing piece 8-2 of rolling disc, adjustable bracing piece bottom are provided with the pressure spring, and the tip of each adjustable bracing piece is equipped with gyro wheel 8-1, through the specification of changing adjustable bracing piece and pressure spring, guarantees to support the gyro wheel when processing different specification drilling rod inner walls and presses at the drilling rod inner wall, realizes gyro wheel and drilling rod inner wall rolling friction. A plurality of actuators are arranged between the two rotating discs, two sides of each actuator 18 are respectively hinged with the proximal ends of actuator supporting rods 8-9, the distal ends of the two actuator supporting rods are respectively hinged with the fixed discs, and a wiring hole is formed in the middle of the right fixed disc and used for passing through a power line. The contacts of each actuator contact the inner wall of the drill rod. A plurality of sets of pre-tightening assemblies are uniformly distributed between the two fixed discs, each set of pre-tightening assembly consists of a tension spring 8-5, a pre-tightening nut 8-6 and a pre-tightening screw rod 8-7 which are sequentially connected, and two ends of each pre-tightening assembly are respectively connected with the two fixed discs. The application of the ultrasonic actuator preload force can be achieved by adjusting the length of the preload bolt penetrating the preload nut. When the pressure of the actuator relative to the inner wall of the drill rod is regulated, one end of the tension spring is dismounted, the pre-tightening nut is rotated to a proper position, and then the tension spring is mounted. In order to ensure the parallelism of the two fixed discs, a telescopic rod 8 is further arranged between the two rotating discs, the axis of the telescopic rod is coaxial with the axis of the two fixed discs, and the two ends of the telescopic rod are respectively in butt joint with the fixed discs (the telescopic rod can adopt a commercially available gas spring supporting rod). The actuators of the inner actuator assembly and the pretensioning components are distributed at intervals, and in the illustrated embodiment, the inner actuator assembly is provided with three actuators, and the pretensioning components adopt three sets respectively.
Referring to fig. 1, the expansion bracket 9 is composed of a plurality of parallelogram link mechanisms, the expansion bracket passes through a through hole of the right support plate and a cylindrical short section, the tail end of the expansion bracket is connected with a fixed disk close to the expansion bracket, the head end of the expansion bracket is connected with a piston rod of an oil cylinder 13, the oil cylinder is connected with a guide block 14, and two guide grooves for guiding movement of the link rod at the head end of the expansion bracket are arranged on the guide block. When the oil cylinder piston stretches out or retracts, the telescopic frame stretches out or contracts to drive the inner actuator assembly to axially move along with the inner hole of the drill rod, and the roller wheel propped against the inner surface of the drill rod can play a role in reducing motion friction. When the drill rod rotates, the rotating disc rotates along with the drill rod, and the fixed disc does not rotate along with the drill rod and only moves axially and linearly under the single action of the bearing and the anti-torsion fixation of the telescopic frame, so that the full-coverage cold forging of the inner actuator assembly relative to the inner surface of the drill rod is realized.
Referring to fig. 1 and 2, the drill rod lateral support assembly comprises two lateral supports 16-1 arranged in parallel, lateral support rollers 16-7 for laterally supporting the drill rod are respectively arranged on opposite surfaces of the two lateral supports, two lateral support rollers are arranged on each lateral support, and the two lateral support rollers are symmetrically distributed above and below a central line of the drill rod. Each lateral bracket is fixedly connected with a lateral supporting screw nut 16-1 respectively, and the spiral directions of the two lateral supporting screw nuts are opposite. The screw threads on the two sides of the lateral supporting screw rod 16-3 are opposite in screw direction, the two sides of the lateral supporting screw rod are respectively in screw fit with the screw threads of each lateral supporting screw nut, the two ends of the lateral supporting screw rod are supported by the screw rod support 16-5, and one end of the lateral supporting screw rod is provided with the handle 16-6. In order to ensure stable movement of the lateral supports, the bottoms of the lateral supports are provided with guide rails 16-4 which are in sliding fit with the guide rails and fixed with the base. The handle is rotated, and the two lateral brackets move oppositely or reversely. During cold forging of the drill rod, the lateral support roller is adjusted to contact the drill rod, so that the drill rod is supported; when the drill rod is replaced, the handle is reversely rotated to open the two lateral brackets. One or two sets of drill rod lateral support assemblies can be arranged, and one set of drill rod lateral support assembly is arranged in the embodiment shown in fig. 1, if two sets of drill rod lateral support assemblies are arranged, the drill rod lateral support assemblies can be arranged at positions corresponding to the middle part of the drill rod.
When the invention works, the drill rod is installed, the pre-pressure of the inner actuator assembly and the outer actuator assembly is regulated, the first motor and the second motor select proper rotating speeds, and then the inner surface and the outer surface of the drill rod can be subjected to cold forging, and the impact of the actuator on the inner surface and the outer surface of the drill rod can obtain a reinforcing layer from nano level to micro level on the surface of the drill rod. The actuator of the inner actuator assembly and the actuator of the outer actuator assembly are matched with a proper ultrasonic generator to provide high-frequency power supply to drive the actuator to vibrate at high frequency. The thickness of the strengthening layer can be controlled by controlling the frequency, amplitude, static pressure and other parameters of the vibration of the actuator; the degree to which the surface of the drill pipe is strengthened is positively correlated to the actuator frequency, amplitude and static pressure over a range. The end of the drill rod, which is close to the chuck, can be turned around for processing, so that the full-coverage cold forging processing of the inner wall and the outer wall of the drill rod is realized.

Claims (8)

1. An ultrasonic cold forging device for inner and outer walls of an aluminum alloy drill rod is characterized in that: the drill rod clamping and rotating mechanism comprises a first motor (1) and a drill rod lateral support assembly (16), one end of a drill rod (5) is driven to rotate by the first motor, and the other end of the drill rod is supported by the drill rod lateral support assembly; the second motor (12) drives the outer actuator assembly (6) to axially move along the outer wall of the drill rod through spiral transmission; the inner actuator axial movement mechanism drives the inner actuator assembly (8) to axially move along the inner wall of the drill rod through the oil cylinder (13) and the telescopic frame (9);
the inner actuator assembly is positioned in a hole of the drill rod and comprises two rotating discs (8-3) which are symmetrically arranged, a fixed disc (8-4) is sleeved in the hole of each rotating disc, and a bearing is arranged between the rotating disc and the fixed disc; the periphery of the rotating disc is uniformly provided with adjustable support rods (8-2), the end part of each adjustable support rod is provided with a roller wheel (8-1), and the roller wheel is in rolling friction with the inner wall of the drill rod; a plurality of actuators are arranged between the two fixed discs, the two sides of each actuator (18) are respectively hinged with the proximal ends of actuator supporting rods (8-9), and the distal ends of the two actuator supporting rods are respectively hinged with the fixed discs; a plurality of sets of pre-tightening assemblies are uniformly distributed between the two fixed discs, each set of pre-tightening assembly consists of a tension spring (8-5), a pre-tightening nut (8-6) and a pre-tightening screw (8-7) which are sequentially connected, and two ends of each pre-tightening assembly are respectively connected with the two fixed discs;
a right supporting plate (11) is arranged on one side of the base, far away from the first motor, and the second motor is fixed on the upper part of the right supporting plate; the external actuator assembly comprises a screw mounting frame (6-1), an actuator mounting seat (6-7) and a pressure spring adjusting plate (6-6), wherein the screw mounting frame and the actuator mounting seat are of an inserting structure and are locked by screws, the actuator mounting seat is provided with a plurality of actuators, the top of each actuator (18) is provided with a pressure spring (6-4), the pressure spring adjusting plate is positioned on the upper part of the pressure spring, an adjusting screw (6-5) in threaded fit with the screw mounting frame passes through the top of the screw mounting frame, and the bottom end of the adjusting screw is pressed on the pressure spring adjusting plate; the screw mounting rack is provided with two screws, each screw is in threaded fit with one screw rod (7), two ends of each screw rod are respectively supported by a left supporting plate and a right supporting plate, the right ends of the two screw rods are respectively connected with a driven gear (6-2), the two driven gears are symmetrically arranged on two sides of a driving gear (6-3), each driven gear is respectively meshed with the driving size, and the driving gear is in key connection with the output shaft of the second motor;
when the ultrasonic cold forging device works, a drill rod is installed, the pre-pressure of an inner actuator assembly and an outer actuator assembly is adjusted, the first motor and the second motor select proper rotating speeds, so that cold forging can be performed on the inner surface and the outer surface of the drill rod, and a nano-scale to micro-scale reinforcing layer is obtained on the surface of the drill rod through impact of the actuators on the inner surface and the outer surface of the drill rod; the actuator of the inner actuator assembly and the actuator of the outer actuator assembly are matched with a proper ultrasonic generator to provide high-frequency power supply so as to drive the actuators to vibrate at high frequency; the thickness of the strengthening layer can be controlled by controlling the frequency, amplitude and static pressure parameters applied on the surface of the drill rod; the degree to which the surface of the drill pipe is strengthened is positively correlated to the actuator frequency, amplitude and static pressure over a range.
2. The ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod according to claim 1, wherein: the drill rod lateral support assembly is provided with two lateral supports (16-1) in parallel, the opposite surfaces of the two lateral supports are respectively provided with lateral support rollers (16-7), each lateral support is fixedly connected with a lateral support screw nut (16-2) with opposite spiral directions, a lateral support screw (16-3) is respectively in threaded fit with the two lateral support screw nuts, two ends of the lateral support screw are supported by screw supports (16-5), and one end of the lateral support screw is provided with a handle (16-6).
3. The ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod according to claim 2, wherein: the right support plate is fixedly connected with a cylindrical short section (10), the inner diameter of the cylindrical short section is matched with the inner diameter of the drill rod, the outer diameter of the cylindrical short section is matched with the outer diameter of the drill rod, and the cylindrical short section is abutted against the right end part of the drill rod.
4. The ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod according to claim 3, wherein: the telescopic frame (9) is composed of a plurality of parallelogram link mechanisms, the telescopic frame (9) penetrates through the right support plate and the cylindrical short section, the tail end of the telescopic frame (9) is connected with a fixed disc close to the telescopic frame (9), the head end of the telescopic frame (9) is connected with a piston rod of an oil cylinder (13), the oil cylinder is connected with a guide block (14), and two guide grooves for guiding movement of the link rod at the head end of the telescopic frame are formed in the guide block.
5. The ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod, as recited in claim 4, is characterized in that: a telescopic rod (8-8) is further arranged between the two rotating discs of the inner actuator assembly, the axis of the telescopic rod is coaxial with the axis of the two fixed discs, and two ends of the telescopic rod are respectively in butt joint with the fixed discs.
6. The ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod, as set forth in claim 5, is characterized in that: the first motor is connected with the chuck (4) through a main shaft of the transmission case.
7. The ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod, as set forth in claim 6, is characterized in that: the bottom of each lateral support is provided with a guide rail (16-4), the direction of the guide rail is vertical to the axial direction of the drill rod, the lateral supports are in sliding fit with the guide rail, and the guide rail is fixed with the base.
8. The ultrasonic cold forging device for the inner and outer walls of the aluminum alloy drill rod, as set forth in claim 7, is characterized in that: the actuators of the inner actuator assembly and the pretensioning member are spaced apart.
CN201811617196.3A 2018-12-28 2018-12-28 Ultrasonic cold forging device for inner and outer walls of aluminum alloy drill rod Active CN109759775B (en)

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