Turning device for drill rod machining

Abstract

The invention discloses a turning device for drill rod machining, and relates to the technical field of turning. Comprising a frame body, a movable frame is installed on the frame body, a power box is installed on the frame body, a rotating clamp is installed on an output shaft of the power box, and a cutter module is arranged on the movable frame; the fixed frame is arranged on the movable frame; the centering frame is fixedly connected to the fixing frame; and the clamping mechanism is arranged on the centering frame and used for clamping a drill rod, the clamping mechanism comprises first sliding parts which are arranged in the circumferential direction and connected to the centering frame in a sliding mode, and balls are arranged at the opposite ends of the first sliding parts which are arranged in the circumferential direction. According to the follow rest, the drill rod is supported and centered through the balls, so that the situation that a supporting point on a traditional follow rest rigidly slides on the outer side of the drill rod, parts are abraded, and the service life is shortened is avoided, meanwhile, the probability that chippings enter a supporting area is reduced, and the situation that the chippings scratch the drill rod is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of turning, in particular to a turning device for machining a drill rod. Background Art

[0002] Drill rod is a key tool used in rock drilling, mining and geological drilling. Its main function is to transmit impact force, torque and flushing media (such as compressed air or water), and connect the drill bit to the rock drilling equipment. In order to ensure the functional adaptability of the drill rod and the material processing requirements, the drill rod needs to be turned accordingly (usually using an intelligent CNC lathe for processing. The intelligent CNC lathe can control the cutting process and cutting status through the intelligent module installed thereon, thereby improving the cutting quality). The drill rod is divided into different specifications. Especially when turning slender drill rods, it is particularly necessary to follow the tool holder to provide real-time support for the turning position of the drill rod to ensure the turning quality of the drill rod.

[0003] The existing support method is usually a direct regional contact between the support point and the outer side of the drill rod, which leads to relative sliding between the two during the turning process of the drill rod. This situation will cause wear of parts and reduce the service life. There is even a situation where debris enters the support area and scratches the drill rod, seriously threatening the turning quality of the drill rod. To address the above problems, the present application proposes a turning device for drill rod processing. Summary of the Invention

[0004] In order to overcome the shortcomings mentioned in the above technical background, the present invention provides a turning device for drilling rod processing.

[0005] The technical solution is as follows: A turning device for drilling rod processing, comprising: A frame body, wherein the frame body is equipped with a movable frame, the frame body is equipped with a power box, the output shaft of the power box is equipped with a rotating fixture, the frame body is equipped with a centering tailstock, and the movable frame is provided with a tool module; A fixed frame, arranged on the movable frame; a centering frame, fixedly connected to the fixing frame; A clamping mechanism is provided on the centering frame and is used to clamp the drill rod. The clamping mechanism includes: First sliding members are arranged circumferentially and are all slidably connected to the centering frame, and opposite ends of the circumferentially arranged first sliding members are each provided with a ball bearing; The transmission mechanism is arranged on the centering frame and is used to make the first sliding member slide relative to the centering frame, so that the ball contacts the drill rod and clamps and centers it.

[0006] More preferably, the angle between adjacent first sliding members is greater than 90° and less than 120°.

[0007] More preferably, the transmission mechanism includes: The rotating plate is arranged on the centering frame, and the rotating plate is provided with a first groove arranged circumferentially and a second groove arranged at intervals. The centering frame is fixedly connected with a limit rod arranged at intervals, and the limit rod corresponds one-to-one to the second groove. The limit rod slides in the adjacent second groove, and the back ends of the circumferentially arranged first sliding parts are fixedly connected to the limit columns, and the first grooves are used to limit the adjacent limit columns.

[0008] More preferably, the distance between the first groove and the outer side of the centering frame gradually changes along the movement direction of the rotating plate relative to the centering frame.

[0009] More preferably, the limiting rod is provided with a mirror-image-arranged boss, which is used to limit the rotating plate.

[0010] More preferably, the fixed frame is hinged with a hydraulic push rod, the rotating plate is provided with a second sliding member, the centering frame is provided with a third groove, the second sliding member slides in the third groove, and the second sliding member is hinged to the telescopic end of the hydraulic push rod.

[0011] More preferably, the cross section of the rotating plate is arc-shaped, and the axis of the hydraulic push rod never intersects with the axis of the rotating plate.

[0012] More preferably, it further comprises: A bevel gear is rotatably connected to the second sliding member, and the transmission mechanism and the clamping mechanism are both arranged in two mirror images, that is, each group of the first sliding members corresponds to one rotating plate, and opposite sides of the two rotating plates are fixedly connected to racks, the racks are engaged with the bevel gear, the rotating plate is slidably connected to the second sliding member, and the fixed frame is slidably connected to the movable frame, and friction exists between the two; The control mechanisms are arranged in a mirror image and are all provided on the frame body, and are used to control the working state of the hydraulic push rod, thereby changing the clamping state of the ball on the drill rod.

[0013] More preferably, the module of the teeth on the bevel gear is 0.5-0.8, which is used to accurately control the clamping state of the ball on the drill rod.

[0014] More preferably, the control mechanism includes: A limiting member, fixedly connected to the frame, and used to limit the position of the fixing frame; A pressure sensor is installed on the movable frame. An elastic element is provided between the pressure sensor and the fixed frame. The elastic element is fixedly connected to the fixed frame.

[0015] Compared with the prior art, the present invention has at least the following advantages: the present invention supports and centers the drill rod through ball bearings, thereby avoiding the rigid sliding between the support point on the traditional "tool rest" and the outer side of the drill rod, causing wear of the parts and thus reducing the service life, while reducing the probability of debris entering the support area, and reducing the situation where the drill rod is scratched by debris; the drill rod is supported and centered in the areas on both sides of the tool module by using mirror-image-arranged ball bearings, thereby performing "multi-point" constraints on the drill rod, blocking the vibration transmission path, suppressing the resonance frequency, and significantly improving the stability and processing accuracy of the machining system, thereby improving the turning quality of the drill rod; through the mutual cooperation between the elastic element and the adjacent pressure sensor, the support and centering work in the turning process is automatically completed, reducing the operating steps of the staff and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 Schematic diagram of the three-dimensional structure of the movable frame, tool module and fixed frame of the present invention; Figure 3 Schematic diagram of the three-dimensional structure of the fixing frame and the centering frame of the present invention; Figure 4 It is a sectional view of the three-dimensional structure of the movable frame and the centering frame of the present invention; Figure 5 Schematic diagram of the three-dimensional structure of the first sliding member and the ball of the present invention; Figure 6 This is an exploded view of the three-dimensional structure of the fixing frame and its parts according to the present invention.

[0017] The markings of the components in the accompanying drawings are as follows: 101, drill rod, 1, frame, 2, moving frame, 3, power box, 4, rotating fixture, 5, centering tailstock, 6, tool module, 7, fixed frame, 8, centering frame, 901, first sliding member, 902, ball bearing, 1001, rotating plate, 1002, first groove, 1003, second groove, 1004, limiting rod, 1005, limiting column, 1101, hydraulic push rod, 1102, second sliding member, 1103, third groove, 12, bevel gear, 13, rack, 1401, limiting member, 1402, pressure sensor, 1403, elastic element. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] Example 1 This embodiment discloses a turning device for machining a drill rod, which is used for turning the outer circle of the drill rod.

[0020] like Figure 1-Figure 5 As shown, it includes: a frame 1, an intelligent module is installed on the frame 1 for controlling the cutting process and cutting state, a mobile frame 2 is installed on the mobile frame 2, a power module is provided on the mobile frame 2 for driving itself to move left and right, a power box 3 is installed on the frame 1, a rotary fixture 4 is installed on the output shaft of the power box 3, the power box 3 is used to drive the rotary fixture 4 to rotate, the power box 3 and the rotary fixture 4 are both existing technologies, and their working principles are not described in detail here, the frame 1 is installed with a centering tailstock 5, the centering tailstock 5 is used to center the drill rod 101 after being clamped by the rotary fixture 4, the centering tailstock 5 is existing technology, the mobile frame 2 is provided with a tool module 6, the tool module 6 consists of a tool holder and a variety of tools, and is used to perform different forms of turning on the drill rod 101, and the mobile frame 2 is used to drive the tool module 6 to move (this process is existing technology and is not described in detail here); a fixed frame 7, It is arranged on the movable frame 2; the centering frame 8 is fixedly connected to the fixed frame 7; the clamping mechanism is arranged on the centering frame 8 and is used to clamp the drill rod 101. The clamping mechanism includes: a first sliding member 901, which is arranged circumferentially and is slidably connected to the centering frame 8. The angle between adjacent first sliding members 901 is greater than 90° and less than 120°, which reduces the local space of the device, thereby preventing the tool module 6 from being affected and facilitating the turning operation on the drill rod 101. The first sliding member 901 located on the upper side is in a vertical state, and the angle between the two first sliding members 901 close to the tool module 6 is 170°. The opposite ends of the circumferentially arranged first sliding members 901 are each provided with a ball 902; a transmission mechanism is arranged on the centering frame 8 and is used to make the first sliding member 901 and the centering frame 8 slide relative to each other, so that the ball 902 contacts the drill rod 101 and clamps and centers it.

[0021] The above setting can be realized, the first sliding member 901 slides relative to the centering frame 8, the first sliding member 901 drives the balls 902 to move together, and the circumferentially arranged balls 902 gradually approach and support the drill rod 101, so that when the drill rod 101 rotates following the output shaft of the power box 3, the drill rod 101 and the balls 902 "roll" relative to each other.

[0022] like Figure 3 、 Figure 5 and Figure 6 As shown, the transmission mechanism includes: a rotating plate 1001, which is arranged on the centering frame 8, and the rotating plate 1001 is provided with three first grooves 1002 arranged circumferentially and two second grooves 1003 arranged at intervals. The number of the first grooves 1002 is the same as the number of the first sliding member 901, and the second groove 1003 is an arc groove, and its center coincides with the rotation center of the rotating plate 1001. The distance between the first groove 1002 and the outer side of the centering frame 8 gradually increases in the counterclockwise direction (as shown in FIG. Figure 6 Taking the front view direction as an example), the centering frame 8 is fixedly connected with spaced limit rods 1004, and the limit rods 1004 correspond one-to-one to the second grooves 1003. The number of limit rods 1004 is the same as the number of second grooves 1003. The limit rods 1004 slide in adjacent second grooves 1003, thereby ensuring the stability of the rotating plate 1001 during movement, thereby improving the clamping quality of the drill rod 101. The limit rods 1004 are provided with mirror-image bosses, which are used to limit the rotating plate 1001. The back ends of the circumferentially arranged first sliding members 901 are fixedly connected to the limit columns 1005, and the first grooves 1002 are used to limit the adjacent limit columns 1005.

[0023] The above arrangement can achieve that the rotating plate 1001 slides relative to the centering frame 8, the first groove 1002 squeezes the limiting column 1005, the limiting column 1005 drives the first sliding member 901 to move, and the first sliding member 901 drives the ball 902 to move together and clamp and center the drill rod 101.

[0024] like Figure 4-Figure 6 As shown, the fixed frame 7 is hinged with a hydraulic push rod 1101, and the hydraulic push rod 1101 is connected to the external hydraulic system. The external hydraulic system is a prior art, and its working principle is not described in detail here. The rotating plate 1001 is provided with a second sliding member 1102, and the centering frame 8 is provided with a third groove 1103. The third groove 1103 is an arc groove, and its center is located on the rotation axis of the second sliding member 1102 (when sliding along the centering frame 8). The second sliding member 1102 slides in the third groove 1103. The cross-section of the rotating plate 1001 is arc-shaped. The axis of the hydraulic push rod 1101 never intersects with the axis of the rotating plate 1001, which facilitates the telescopic end of the hydraulic push rod 1101 to transmit force to the second sliding member 1102. The second sliding member 1102 is slidably connected to the centering frame 8, and the second sliding member 1102 is hinged to the telescopic end of the hydraulic push rod 1101.

[0025] Working principle: When the drill rod 101 needs to be turned, the staff uses the rotating clamp 4 to clamp and fix the drill rod 101, and then uses the centering tailstock 5 to center the tail of the drill rod 101, so as to complete the "fixing" of the two ends of the drill rod 101. At this time, the drill rod 101 is located between the circumferentially arranged first sliding members 901, and then the external hydraulic system drives the telescopic end of the hydraulic push rod 1101 to extend upward, and the telescopic end of the hydraulic push rod 1101 drives the second sliding member 1102 to move upward together, and the second sliding member 1102 drives the rotating plate 1001 to move upward together, and the rotating plate 1001 rotates counterclockwise along the centering frame 8 (such as Figure 5 Taking the front view direction as an example), the first groove 1002 begins to squeeze the limit column 1005, and the circumferentially arranged limit columns 1005 begin to move in opposite directions. The limit columns 1005 drive the balls 902 to move together through the first sliding member 901. The circumferentially arranged balls 902 gradually clamp and center the drill rod 101. After the clamping and centering of the drill rod 101 are completed, the external hydraulic system stops working.

[0026] Then, the output shaft of the power box 3 drives the rotating fixture 4 to rotate together, and the rotating fixture 4 drives the drill rod 101 to rotate together. At this time, the drill rod 101 drives the ball 902 to roll, and the ball 902 slides relative to the first sliding member 901, so as to prevent the support point on the traditional "tool holder" from sliding rigidly with the outer side of the drill rod 101, thereby causing wear of the parts. At the same time, it also solves the problem that debris enters the area where the two slide relative to each other and scratches the drill rod 101, thereby reducing the turning quality of the drill rod 101. After the drill rod 101 is in a stable rotation state, the tool module 6 and the fixed frame 7 are driven to move by the movable frame 2 to turn the outer circle of the drill rod 101. During the process, the circumferentially arranged ball 902 continuously supports and centers the drill rod 101. After the turning is completed, all parts can be reset.

[0027] Example 2 This embodiment discloses a turning device for machining a drill rod, which adds a function of multiple clamping of the drill rod 101 on the basis of the embodiment 1.

[0028] like Figure 5 and Figure 6As shown, it also includes: a bevel gear 12, which is rotatably connected to the second sliding member 1102, and the module of the teeth on the bevel gear 12 is 0.5-0.8, which is used to accurately control the clamping state of the ball 902 on the drill rod 101. The transmission mechanism and the clamping mechanism are two mirror-image arrangements on the left and right, that is, each group of first sliding members 901 corresponds to a rotating plate 1001, and the opposite sides of the two rotating plates 1001 are fixedly connected with a rack 13, which is part of the conical gear ring. The rack 13 meshes with the bevel gear 12, the rotating plate 1001 is slidably connected to the second sliding member 1102, the fixed frame 7 is slidably connected to the movable frame 2, and there is friction between the two, which is used to maintain the relative stability of the two during the movement of the fixed frame 7 with the movable frame 2; the control mechanism is two mirror-image arrangements on the left and right, both of which are arranged on the frame body 1, and are used to control the working state of the hydraulic push rod 1101, thereby changing the clamping state of the ball 902 on the drill rod 101.

[0029] like Figure 2 、 Figure 5 and Figure 6 As shown, the control mechanism includes: a limit member 1401, which is fixedly connected to the frame body 1, and the limit member 1401 is used to limit the fixed frame 7. When the fixed frame 7 contacts the limit member 1401 during the movement of the mobile frame 2, the limit member 1401 limits the position of the fixed frame 7 to overcome the friction between the fixed frame 7 and the mobile frame 2; a pressure sensor 1402, which is installed on the mobile frame 2, and the pressure sensor 1402 is electrically connected to the external hydraulic system and is used to control the working state of the hydraulic push rod 1101. An elastic element 1403 is arranged between the pressure sensor 1402 and the fixed frame 7. The elastic element 1403 is a spring and is used to reset the fixed frame 7. The elastic element 1403 is fixedly connected to the fixed frame 7. When not working, the elastic element 1403 is in contact with the pressure sensor 1402.

[0030] Working principle: When turning the drill rod 101, first the fixed frame 7 and the pressure sensor 1402 are driven to move to the left by the movable frame 2 (if not specifically described, they are all Figure 2The working process is described in the forward direction), during the process, the movable frame 2 drives the tool module 6 to move together, and after the fixed frame 7 contacts the limit piece 1401 on the left, the fixed frame 7 and the parts thereon stop moving to the left, and the movable frame 2 continues to move to the left, and the pressure sensor 1402 on the left begins to squeeze the adjacent elastic element 1403, and the elastic element 1403 is deformed until the tool module 6 moves to the left and exceeds the left end of the drill rod 101, and then the tool module 6 stops moving (at this time, the tool on the tool module 6 is already on the left side of all the first sliding members 901, and the first sliding member 901 on the left is still within the length range of the drill rod 101), and then the movable frame 2 drives the tool module 6 to move forward until the tool module 6 moves to the position of the predetermined cutting amount and stops moving, and then the movable frame 2 drives the tool module 6 to move to the right, thereby turning the outer circle of the drill rod 101.

[0031] During the process of the movable frame 2 moving to the right, the fixed frame 7 slides relative to the movable frame 2 under the action of the elastic force of the (left) elastic element 1403 (at this time, the fixed frame 7 and the parts thereon do not move), the (left) elastic element 1403 gradually resets, and the pressure of the (left) elastic element 1403 on the (left) pressure sensor 1402 gradually decreases. When the (left) elastic element 1403 is fully reset, the tool on the tool module 6 is already located between the left and right adjacent first sliding members 901 (because the tool module 6 turns the area passed by the drill rod 101, the ball 902 on the left is now out of contact with the drill rod 101). After the elastic element 1403 is fully reset, it means that the above-mentioned working steps have been completed. At this time, the pressure sensor 1402 transmits the signal from pressure to pressure in the form of an electrical signal to the external hydraulic system. Then the external hydraulic system drives the telescopic end of the hydraulic push rod 1101 to extend upward again, and the telescopic end of the hydraulic push rod 1101 drives the second sliding member 1102 to move upward together. The second sliding member 1102 drives the bevel gear 12 to move upward together. Since the ball 902 on the right side remains in contact with the drill rod 101 at this time, the bevel gear 12 rolls upward along the right rack 13, and the bevel gear 12 drives the rack 13 on the left side to move upward together. The rack 13 on the left side drives the rotating plate 1001 on the left side to move upward together, so that the balls 902 arranged circumferentially on the left side further move oppositely (until the hydraulic push rod 1101 stops working after the ball 902 on the left side contacts the drill rod 101), thereby further supporting and centering the area that has been turned on the drill rod 101, thereby performing "multi-point" constraint on the drill rod 101, blocking the vibration transmission path, suppressing the resonant frequency, significantly improving the stability and processing accuracy of the machining system, and thus improving the turning quality of the drill rod 101. At the same time, the mutual cooperation between the elastic element 1403 and the adjacent pressure sensor 1402 is used to automatically complete the support and centering work during the turning process, reducing the operating steps of the staff and improving work efficiency.

[0032] While various embodiments of the present application have been described above, the above descriptions are illustrative, non-exhaustive, and not intended to be limiting of the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is selected to best explain the principles of the embodiments, their practical applications, or technological improvements in the marketplace, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A turning device for machining a drill rod, comprising: A frame (1), the frame (1) is equipped with a movable frame (2), the frame (1) is equipped with a power box (3), the output shaft of the power box (3) is equipped with a rotating fixture (4), the frame (1) is equipped with a centering tailstock (5), and the movable frame (2) is provided with a tool module (6); Its characteristics are: A fixed frame (7) is arranged on the movable frame (2); A centering frame (8) fixedly connected to the fixing frame (7); A clamping mechanism is provided on the centering frame (8) and is used to clamp the drill rod (101). The clamping mechanism comprises: First sliding members (901) are arranged circumferentially and are all slidably connected to the centering frame (8), and opposite ends of the circumferentially arranged first sliding members (901) are each provided with a ball bearing (902); The transmission mechanism is arranged on the centering frame (8) and is used to make the first sliding member (901) slide relative to the centering frame (8), so that the ball (902) contacts the drill rod (101) and clamps and centers them.

2. A turning device for drilling rod processing according to claim 1, characterized in that: The angle between adjacent first sliding members (901) is greater than 90° and less than 120°.

3. A turning device for drilling rod processing according to claim 1, characterized in that: The transmission mechanism includes: A rotating plate (1001) is arranged on the centering frame (8), and the rotating plate (1001) is provided with a circumferentially arranged first groove (1002) and an intervally arranged second groove (1003). The centering frame (8) is fixedly connected with intervally arranged limiting rods (1004), and the limiting rods (1004) correspond one-to-one to the second grooves (1003). The limiting rods (1004) slide in adjacent second grooves (1003). The back ends of the circumferentially arranged first sliding members (901) are fixedly connected to limiting columns (1005), and the first grooves (1002) are used to limit the adjacent limiting columns (1005).

4. A turning device for machining a drill rod according to claim 3, characterized in that: The distance between the first groove (1002) and the outer side of the centering frame (8) gradually changes along the movement direction of the rotating plate (1001) relative to the centering frame (8).

5. A turning device for machining a drill rod according to claim 3, characterized in that: The limiting rod (1004) is provided with a mirror-image-arranged boss, which is used to limit the rotating plate (1001).

6. A turning device for machining a drill rod according to claim 3, characterized in that: The fixed frame (7) is hinged with a hydraulic push rod (1101), the rotating plate (1001) is provided with a second sliding member (1102), the centering frame (8) is provided with a third groove (1103), the second sliding member (1102) slides in the third groove (1103), and the second sliding member (1102) is hinged with the telescopic end of the hydraulic push rod (1101).

7. A turning device for machining a drill rod according to claim 6, characterized in that: The cross section of the rotating plate (1001) is arc-shaped, and the axis of the hydraulic push rod (1101) never intersects with the axis of the rotating plate (1001).

8. A turning device for machining a drill rod according to claim 6, characterized in that: Also included are: The bevel gear (12) is rotatably connected to the second sliding member (1102), the transmission mechanism and the clamping mechanism are both arranged in two mirror images, that is, each group of the first sliding members (901) corresponds to one rotating plate (1001), and the opposite sides of the two rotating plates (1001) are fixedly connected with a rack (13), the rack (13) is engaged with the bevel gear (12), the rotating plate (1001) is slidably connected to the second sliding member (1102), the fixed frame (7) is slidably connected to the movable frame (2), and there is friction between the two. The control mechanisms are arranged in a mirror image and are both provided on the frame (1) for controlling the working state of the hydraulic push rod (1101), thereby changing the clamping state of the ball (902) on the drill rod (101).

9. A turning device for drilling rod processing according to claim 8, characterized in that: The module of the teeth on the bevel gear (12) is 0.5-0.8, which is used to accurately control the clamping state of the ball (902) on the drill rod (101).

10. A turning device for machining a drill rod according to claim 9, characterized in that: The control mechanism includes: A limiting member (1401) is fixedly connected to the frame (1), and the limiting member (1401) is used to limit the position of the fixing frame (7); A pressure sensor (1402) is installed on the movable frame (2), an elastic element (1403) is provided between the pressure sensor (1402) and the fixed frame (7), and the elastic element (1403) is fixedly connected to the fixed frame (7).

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