A turning device for machining of a drill rod

Abstract

The application discloses a kind of turning device for drill rod processing, it is related to turning technical field.The application includes: frame body, the frame body is equipped with moving frame, the frame body is equipped with power box, the output shaft of power box is equipped with rotary clamp, the moving frame is provided with tool module;Fixed frame is arranged in the moving frame;Centering frame is fixedly connected to the fixed frame;Clamping mechanism is arranged on the centering frame, for clamping drill rod, the clamping mechanism includes: first sliding piece, for circumferential arrangement, all slidingly connected to the centering frame, and the opposite ends of the circumferential arrangement first sliding piece are all provided with ball.The application supports and centers drill rod by ball, so as to avoid the hard sliding of support point on traditional "tool rest" and the outside of drill rod, so as to reduce the service life of parts, reduce the probability of debris entering the support area, reduce the condition of drill rod being scratched by debris.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of turning, in particular to a turning device for drill rod machining. BACKGROUND

[0002] The drill rod is a key tool for rock drilling, mining and geological drilling, and mainly functions to transmit impact force, torque and flushing medium (such as compressed air or water) and connect the drill bit with the rock drilling equipment. In order to ensure the functional adaptability and material machining requirements of the drill rod, the drill rod needs to be correspondingly turned (usually processed by using an intelligent numerical control lathe, which can control the cutting process and cutting state through an intelligent module arranged thereon, so as to improve the cutting quality). The drill rod is divided into different specifications, and in particular, when the slender drill rod is turned, the turning position of the drill rod needs to be supported in real time by a tool holder, so as to ensure the turning quality of the drill rod.

[0003] The existing supporting mode is usually that a supporting point is in direct regional contact with the outer side of the drill rod, so that relative sliding exists between the drill rod and the supporting point during the turning of the drill rod. Such a situation can cause part wear, reduce the service life, and even cause the drill rod to be scratched by the debris entering the supporting area, which seriously threatens the turning quality of the drill rod. In view of the above problems, the application provides a turning device for drill rod machining. SUMMARY

[0004] In order to overcome the shortcomings mentioned in the above technical background, the application provides a turning device for drill rod machining.

[0005] The technical scheme is as follows: a turning device for drill rod machining, comprising:

[0006] A frame body is provided with a moving frame, a power box is installed on the frame body, a rotating clamp is installed on the output shaft of the power box, a centering tailstock is installed on the frame body, and a tool module is arranged on the moving frame.

[0007] A fixed frame is arranged on the moving frame.

[0008] A centering frame is fixedly connected to the fixed frame.

[0009] A clamping mechanism is arranged on the centering frame and used for clamping the drill rod, and the clamping mechanism comprises:

[0010] First sliding members are arranged in a circumferential direction and are slidably connected to the centering frame, and opposite ends of the first sliding members arranged in the circumferential direction are provided with balls.

[0011] A 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 and clamps the drill rod.

[0012] More preferably, the included angle between adjacent first sliding members is greater than 90° and less than 120°.

[0013] More preferably, the transmission mechanism comprises:

[0014] A rotating plate is arranged on the centering frame, and the rotating plate is provided with circumferentially arranged first grooves and spaced second grooves. The centering frame is fixedly connected with spaced limiting rods, and the limiting rods correspond one-to-one with the second grooves. The limiting rods slide in adjacent second grooves. The back end of the circumferentially arranged first sliding member is fixedly connected with a limiting column. The first groove is used to limit the adjacent limiting column.

[0015] More preferably, the distance between the first groove and the outside of the centering frame gradually changes along the movement direction of the rotating plate relative to the centering frame.

[0016] More preferably, the limiting rod is provided with a mirror image arranged boss, which is used to limit the rotating plate.

[0017] 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 with the telescopic end of the hydraulic push rod.

[0018] More preferably, the cross section of the rotating plate is arc-shaped, and the axis of the hydraulic push rod always does not intersect with the axis of the rotating plate.

[0019] More preferably, it further comprises:

[0020] A bevel gear is rotatably connected to the second sliding member. The transmission mechanism and the clamping mechanism are both mirror image arranged two, that is, each group of first sliding members corresponds to one rotating plate. The opposite sides of the two rotating plates are fixedly connected with racks. The racks are meshed with the bevel gears. The rotating plate is slidingly connected with the second sliding member. The fixed frame is slidingly connected with the moving frame, and there is friction between them.

[0021] A control mechanism is mirror image arranged, and is arranged on the frame body, and is used to control the working state of the hydraulic push rod, so as to change the clamping state of the ball to the drill rod.

[0022] More preferably, the modulus of the pinion gear tooth is 0.5-0.8, for precisely controlling the clamping state of the ball on the drill rod.

[0023] More preferably, the control mechanism comprises:

[0024] A limiting piece is fixedly connected to the frame body, and the limiting piece is used for limiting the fixing frame.

[0025] A pressure sensor is installed on the moving frame, and an elastic element is arranged between the pressure sensor and the fixing frame, and the elastic element is fixedly connected to the fixing frame.

[0026] Compared with the prior art, the present application has at least the following advantages: the present application supports and centers the drill rod by using balls, thereby avoiding the hard sliding of the support point on the traditional "tool holder" and the outer side of the drill rod, so as to reduce the service life and the probability of the debris entering the support area, and to reduce the situation that the debris scratches the drill rod; the drill rod is supported and centered by using the mirror image arranged balls on both sides of the tool module, so as to "multi-point" constrain the drill rod, block the vibration transmission path, suppress the resonance frequency, significantly improve the stability and machining precision of the machining system, and further improve the turning quality of the drill rod; through the cooperation between the elastic element and the adjacent pressure sensor, the support and centering work in the turning process is automatically completed, the operation steps of the workers are reduced, and the work efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0028] Figure 2 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0029] Figure 3 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0030] Figure 4 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0031] Figure 5 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0032] Figure 6 It is a schematic diagram of the overall three-dimensional structure of the present application;

[0033] The labels of the components in the drawings are as follows: 101, drill rod, 1, frame body, 2, moving frame, 3, power box, 4, rotary clamp, 5, centering tailstock, 6, tool module, 7, fixed frame, 8, centering frame, 901, first sliding piece, 902, ball, 1001, rotating plate, 1002, first groove, 1003, second groove, 1004, limiting rod, 1005, limiting column, 1101, hydraulic push rod, 1102, second sliding piece, 1103, third groove, 12, bevel gear, 13, rack, 1401, limiting piece, 1402, pressure sensor, 1403, elastic element. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0035] Embodiment 1

[0036] The present embodiment discloses a turning device for drill rod machining, which is used for turning the outer circle of the drill rod.

[0037] As Figures 1-5As shown, it comprises: a rack body 1, the smart module is installed on the rack body 1, which is used for controlling the cutting process and the cutting state, the rack body 1 is installed with a moving frame 2, the moving frame 2 is provided with a power module, which is used to drive itself to move left and right, the rack body 1 is installed with a power box 3, the output shaft of the power box 3 is installed with a rotary clamp 4, the power box 3 is used to drive the rotary clamp 4 to rotate, the power box 3 and the rotary clamp 4 are prior art, and the working principle will not be described in detail here, the rack body 1 is installed with a centering tailstock 5, which is used to center the drill rod 101 held by the rotary clamp 4, the centering tailstock 5 is prior art, the moving frame 2 is provided with a tool module 6, which is composed of a tool holder and a plurality of tools, and is used for turning the drill rod 101 in different forms, the moving frame 2 is used to drive the tool module 6 to move (this process is prior art, and will not be described in detail here); a fixed frame 7 is arranged on the moving frame 2; a centering frame 8 is fixedly connected to the fixed frame 7; a clamping mechanism is arranged on the centering frame 8 and is used for clamping the drill rod 101, the clamping mechanism comprises: a plurality of first sliding members 901 arranged circumferentially and slidably connected to the centering frame 8, the included angle between adjacent first sliding members 901 is greater than 90° and less than 120°, the local space of the device is reduced, thereby preventing the tool module 6 from being affected, facilitating turning operation of the drill rod 101, the first sliding member 901 on the upper side is in a vertical state, the included angle between the two first sliding members 901 close to the tool module 6 is 170°, and the opposite ends of the circumferentially arranged first sliding members 901 are provided with balls 902; a transmission mechanism is arranged on the centering frame 8 and is used for relatively sliding the first sliding members 901 and the centering frame 8, so that the balls 902 are in contact with the drill rod 101 and clamp and center the drill rod 101.

[0038] The above arrangement can realize that the first sliding members 901 relatively slide with the centering frame 8, the first sliding members 901 drive the balls 902 to move together, the circumferentially arranged balls 902 gradually approach and support the drill rod 101, so that when the drill rod 101 rotates with the output shaft of the power box 3, the drill rod 101 relatively "rolls" with the balls 902.

[0039] As shown in Figure 3 , Figure 5 and Figure 6 , the transmission mechanism comprises: a rotating plate 1001 arranged on the centering frame 8, 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 that of the first sliding members 901, the second grooves 1003 are arc grooves, and the center of the arc grooves coincides with the rotation center of the rotating plate 1001, the distance between the first grooves 1002 and the outside of the centering frame 8 gradually increases in the counterclockwise direction (as shown in Figure 6The positive direction is taken as an example), the centering frame 8 is fixedly connected with the limit rods 1004 arranged at intervals, and the limit rods 1004 correspond to the second grooves 1003 one by one, the number of the limit rods 1004 is the same as that of the second grooves 1003, the limit rods 1004 slide in the adjacent second grooves 1003, so as to ensure the stability of the rotating plate 1001 during movement, and then improve the clamping quality of the drill rod 101, the limit rods 1004 are provided with mirror image arranged bosses, the bosses are used for limiting the rotating plate 1001, and the back ends of the circumferentially arranged first sliding members 901 are fixedly connected with the limit columns 1005, and the first grooves 1002 are used for limiting the adjacent limit columns 1005.

[0040] The above setting can realize that the rotating plate 1001 slides relative to the centering frame 8, the first grooves 1002 extrude the limit columns 1005, the limit columns 1005 drive the first sliding members 901 to move, the first sliding members 901 drive the ball bearings 902 to move together and clamp and center the drill rod 101.

[0041] As shown in Figures 4-6 The fixed frame 7 is hinged with the hydraulic push rod 1101, the hydraulic push rod 1101 communicates with an external hydraulic system, the external hydraulic system is prior art, and the working principle will not be described in detail here, the rotating plate 1001 is provided with the second sliding member 1102, the centering frame 8 is provided with the third groove 1103, the third groove 1103 is an arc-shaped groove, and the center of the third groove 1103 is located on the rotating 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 always does not intersect with the axis of the rotating plate 1001, so as to facilitate the force transmission from the telescopic end of the hydraulic push rod 1101 to the second sliding member 1102, the second sliding member 1102 is slidably connected with the centering frame 8, and the second sliding member 1102 is hinged with the telescopic end of the hydraulic push rod 1101.

[0042] Working principle: when the drill rod 101 needs to be turned, the staff clamps and fixes the drill rod 101 by using the rotary clamp 4, and then centers the tail of the drill rod 101 by using the centering tail seat 5, so as to complete the "fixing" of both ends of the drill rod 101, at this time, the drill rod 101 is located between the circumferentially arranged first sliding members 901, then the telescopic end of the hydraulic push rod 1101 is driven upward by the external hydraulic system, 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 rotating plate 1001 to move upward together, and the rotating plate 1001 rotates counterclockwise along the centering frame 8 (as Figure 5The positive direction is taken as an example), the first groove 1002 starts to extrude the limiting column 1005, the circumferentially arranged limiting column 1005 starts to move in opposition, the limiting column 1005 moves together with the ball 902 through the first sliding piece 901, the circumferentially arranged ball 902 gradually clamps and centers the drill rod 101, and after the clamping and centering of the drill rod 101 are completed, the external hydraulic system stops working.

[0043] Subsequently, the output shaft of the power box 3 drives the rotary clamp 4 to rotate together, the rotary clamp 4 drives the drill rod 101 to rotate together, at this time, the drill rod 101 drives the ball 902 to roll, the ball 902 slides relative to the first sliding piece 901, thereby preventing the support point on the traditional "tool holder" from hard sliding with the outside of the drill rod 101, so as to cause wear of the part, and also solving the problem that the chips enter the area of relative sliding between the two to scratch the drill rod 101, thereby reducing the turning quality of the drill rod 101, after the drill rod 101 is in a stable rotating state, the cutter module 6 and the fixed frame 7 are moved by the moving frame 2, so as to turn the outer circle of the drill rod 101, and the circumferentially arranged ball 902 continuously supports and centers the drill rod 101 in the process, and after the turning is completed, all parts can be reset.

[0044] Embodiment 2

[0045] The embodiment discloses a turning device for drill rod machining, which further has the function of multiple clamping of the drill rod 101 on the basis of embodiment 1.

[0046] As shown in Figure 5 , Figure 6 and , further comprising: a bevel gear 12 rotatably connected to the second sliding piece 1102, the modulus of the tooth on the bevel gear 12 is 0.5-0.8, which is used for accurately controlling the clamping state of the ball 902 to the drill rod 101, the transmission mechanism and the clamping mechanism are both arranged as left and right mirror images, that is, each group of first sliding pieces 901 corresponds to a rotating plate 1001, the opposite sides of the two rotating plates 1001 are fixedly connected with a rack 13, the rack 13 is part of a conical gear ring, the rack 13 is engaged with the bevel gear 12, the rotating plate 1001 is slidingly connected with the second sliding piece 1102, the fixed frame 7 is slidingly connected with the moving frame 2, and there is friction between the two, which is used for maintaining the relative stability of the two during the movement of the fixed frame 7 with the moving frame 2; the control mechanism is arranged as left and right mirror images, and is arranged on the frame body 1, which is used for controlling the working state of the hydraulic push rod 1101, so as to change the clamping state of the ball 902 to the drill rod 101.

[0047] As shown in Figure 2 , Figure 5 and Figure 6As shown, the control mechanism includes: a limiting member 1401, fixedly connected to the frame 1, which limits the position of the fixed frame 7. When the fixed frame 7 contacts the limiting member 1401 during the movement of the movable frame 2, the limiting member 1401 restricts the position of the fixed frame 7 to overcome the friction between the fixed frame 7 and the movable frame 2; a pressure sensor 1402, installed on the movable frame 2, which is electrically connected to the external hydraulic system and used to control the working state of the hydraulic push rod 1101. An elastic element 1403, which is a spring, is provided between the pressure sensor 1402 and the fixed frame 7 to reset the fixed frame 7. The elastic element 1403 is fixedly connected to the fixed frame 7. When not in operation, the elastic element 1403 contacts the pressure sensor 1402.

[0048] Working principle:

[0049] When turning the drill rod 101, the moving frame 2 first drives the fixed frame 7 and the pressure sensor 1402 to move to the left together (unless otherwise emphasized, this is referred to as...). Figure 2 (Describing the working process from the perspective of looking straight ahead) During the process, the moving frame 2 moves the tool module 6 together. After the fixed frame 7 contacts the left limit member 1401, the fixed frame 7 and its parts stop moving to the left. The moving frame 2 continues to move to the left, and the pressure sensor 1402 on the left side begins to squeeze the adjacent elastic element 1403. The elastic element 1403 deforms until the tool module 6 moves to the left beyond the left end of the chisel 101 and then the tool module 6 stops moving (at this time, the tool on the tool module 6 is located to the left of all the first sliding members 901, and the first sliding members 901 on the left side are still within the length range of the chisel 101). Then the moving 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 then stops moving. Then the moving frame 2 drives the tool module 6 to move to the right, thereby turning the outer circle of the chisel 101.

[0050] In the process of moving the moving frame 2 to the right, the fixed frame 7 slides relative to the moving frame 2 under 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, the pressure of the (left) elastic element 1403 on the (left) pressure sensor 1402 gradually decreases, and when the (left) elastic element 1403 is completely reset, the tool on the tool module 6 has been located between the first sliding members 901 adjacent to the left (since the tool module 6 turns the area passed by the drill rod 101, at this time, the left ball 902 has been out of contact with the drill rod 101). After the elastic element 1403 is completely reset, it represents that the above working steps have been completed, at which time the pressure sensor 1402 transmits the signal from pressure to no pressure to the hydraulic system outside in the form of an electric signal, and then the hydraulic system outside drives the telescopic end of the hydraulic push rod 1101 to extend upward again, 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 right ball 902 keeps in contact with the drill rod 101 at this time, the bevel gear 12 rolls upward along the right rack 13, the bevel gear 12 drives the left rack 13 to move upward together, the left rack 13 drives the left rotating plate 1001 to move upward together, so that the left circumferentially arranged balls 902 are further moved oppositely (until the left ball 902 contacts the drill rod 101, the hydraulic push rod 1101 stops working), thereby further supporting and centering the area of the drill rod 101 that has been turned, so as to "multi-point" constrain the drill rod 101, block the vibration transmission path, suppress the resonance frequency, significantly improve the stability and machining precision of the machining system, and thus improve the turning quality of the drill rod 101. At the same time, by using the cooperation between the elastic element 1403 and the adjacent pressure sensor 1402, the supporting and centering work in the turning process is automatically completed, the operation steps of the workers are reduced, and the work efficiency is improved.

[0051] The above has described the embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical applications, or technical improvements in the market of the embodiments, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein.

Claims

1. A turning device for drill rod machining, comprising: a frame body (1) provided with a moving frame (2), the frame body (1) is provided with a power box (3), the output shaft of the power box (3) is provided with a rotary clamp (4), the frame body (1) is provided with a centering tailstock (5), the moving frame (2) is provided with a tool module (6); characterized in that: a fixed frame (7) is arranged on the moving frame (2); a centering frame (8) is fixedly connected to the fixed frame (7); a clamping mechanism is arranged on the centering frame (8) and used for clamping a drill rod (101), the clamping mechanism comprises: a plurality of first sliding members (901) arranged in a circumferential direction and slidably connected to the centering frame (8), and opposite ends of the first sliding members (901) arranged in the circumferential direction are provided with a plurality of balls (902); a transmission mechanism is arranged on the centering frame (8) and used for relatively sliding the first sliding members (901) and the centering frame (8), so that the balls (902) are in contact with the drill rod (101) and clamp the drill rod (101); the transmission mechanism comprises: a rotating plate (1001) arranged on the centering frame (8), the rotating plate (1001) is provided with a plurality of first grooves (1002) arranged in a circumferential direction and a plurality of second grooves (1003) arranged at intervals, the centering frame (8) is fixedly connected with a plurality of limiting rods (1004) arranged at intervals, and the limiting rods (1004) correspond to the second grooves (1003) one by one, the limiting rods (1004) slide in adjacent second grooves (1003), and back ends of the first sliding members (901) arranged in the circumferential direction are fixedly connected with a plurality of limiting columns (1005), and the first grooves (1002) are used for limiting the adjacent limiting columns (1005); the fixed frame (7) is hingedly connected 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 hingedly connected with an extension end of the hydraulic push rod (1101); further comprising: a bevel gear (12) rotatably connected to the second sliding member (1102), the transmission mechanism and the clamping mechanism are both arranged in a mirror image, that is, each group of the first sliding members (901) corresponds to one rotating plate (1001), opposite sides of the two rotating plates (1001) are fixedly connected with a plurality of racks (13), the racks (13) are engaged with the bevel gear (12), the rotating plate (1001) is slidably connected with the second sliding member (1102), the fixed frame (7) is slidably connected with the moving frame (2), and there is a friction force between the fixed frame (7) and the moving frame (2); a control mechanism arranged in a mirror image and arranged on the frame body (1) and used for controlling a working state of the hydraulic push rod (1101), so as to change a clamping state of the balls (902) to the drill rod (101). The control mechanism comprises: A limiting piece (1401) is fixedly connected to the frame body (1), and is used for limiting the fixing frame (7); A pressure sensor (1402) is installed on the moving frame (2), and an elastic element (1403) is arranged between the pressure sensor (1402) and the fixing frame (7), and the elastic element (1403) is fixedly connected with the fixing frame (7).

2. A turning device for broach machining according to claim 1, characterized in that, The included angle between adjacent first sliding pieces (901) is greater than 90° and less than 120°.

3. The turning device for a drill rod machining according to claim 1, characterized in that, The distance between the first groove (1002) and the outside of the centering frame (8) gradually changes along the movement direction of the rotating plate (1001) relative to the centering frame (8).

4. The turning device for a drill rod machining according to claim 1, characterized in that, The limiting rod (1004) is provided with mirror image arranged bosses for limiting the rotating plate (1001).

5. The turning device for a drill rod machining according to claim 1, characterized in that, The cross section of the rotating plate (1001) is arc-shaped, and the axis of the hydraulic push rod (1101) always does not intersect with the axis of the rotating plate (1001).

6. The turning device for a drill rod machining according to claim 1, characterized in that, The modulus of the tooth on the bevel gear (12) is 0.5-0.8, which is used for accurately controlling the clamping state of the ball (902) to the drill rod (101).

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