CN110744088B - A horizontal boring machine for joint drilling - Google Patents

A horizontal boring machine for joint drilling Download PDF

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Publication number
CN110744088B
CN110744088B CN201910960742.1A CN201910960742A CN110744088B CN 110744088 B CN110744088 B CN 110744088B CN 201910960742 A CN201910960742 A CN 201910960742A CN 110744088 B CN110744088 B CN 110744088B
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China
Prior art keywords
sliding block
sliding
workbench
boring machine
upper side
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CN110744088A (en
Inventor
夏正江
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Jiangsu Guowei Engineering Machinery Co ltd
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Jiangsu Guowei Engineering Machinery Co ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23BTURNING; BORING
    • B23B39/00General-purpose boring or drilling machines or devices; Sets of boring and/or drilling machines
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/25Movable or adjustable work or tool supports
    • B23Q1/26Movable or adjustable work or tool supports characterised by constructional features relating to the co-operation of relatively movable members; Means for preventing relative movement of such members
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q11/00Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
    • B23Q11/0042Devices for removing chips

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Drilling And Boring (AREA)

Abstract

The invention discloses a horizontal boring machine for joint drilling, which comprises a workbench, connecting screws, a movable table and a fixed box, wherein a first chute is formed in the lower side surface of the workbench, a bottom plate is arranged on the lower side of the workbench, handles are arranged on the left side surface and the right side surface of the workbench, a first sliding block is arranged on the upper side surface of the bottom plate, the first sliding block is arranged in the first chute, limit screws are arranged on the upper side surface of the bottom plate, the limit screws are respectively arranged on the front side and the rear side of the first sliding block, grooves are formed in the upper side surface of the workbench, and first internal threaded holes are formed in the front side and the rear side of the workbench. This connect horizontal boring machine for drilling is provided with first connecting plate, fixed block and connecting screw, when need examine and repair or change the inside circuit board of box, through dismantling connecting screw, causes first connecting plate and fixed block to separate to make the circuit board convenient by dismantling examine and repair or change.

Description

Horizontal boring machine for joint drilling
Technical Field
The invention particularly relates to the technical field of horizontal boring machines, in particular to a horizontal boring machine for joint drilling.
Background
The horizontal boring machine is the most widely applied type of boring machine, mainly is hole processing, the boring precision can reach IT7, besides enlarging the cast or processed hole on a workpiece, the horizontal boring machine can also mill planes, drill, process sections and outer circles of flanges, and the roundness error of the processed hole is not more than 5mm mainly in single-piece small-batch production and repair workshops.
When the existing horizontal boring machine is used for processing workpieces, generated scraps are not cleaned timely, so that a chute on the horizontal boring machine is blocked, the position of a workpiece table cannot be adjusted, a sliding rail on the horizontal boring machine is inconvenient to replace when the existing horizontal boring machine is used for processing the workpieces, the horizontal boring machine needs to be replaced integrally when the sliding rail is worn, the cost is increased, and a drill bit on the horizontal boring machine is inconvenient to replace when the existing horizontal boring machine is used for processing the workpieces, and the workpiece and the drill bit on the existing horizontal boring machine are inconvenient to adjust up and down.
Disclosure of Invention
The invention aims to provide a horizontal boring machine for joint drilling, which solves the problems that the existing horizontal boring machine provided in the prior art cannot clean scraps generated during workpiece processing, a sliding rail on the horizontal boring machine is inconvenient to replace during workpiece processing, a drill bit on the horizontal boring machine is inconvenient to replace during workpiece processing, and the workpiece and the drill bit on the horizontal boring machine are inconvenient to adjust up and down during workpiece processing.
In order to achieve the above purpose, the present invention provides the following technical solutions: the utility model provides a joint drilling is with horizontal boring machine, includes workstation, first connecting screw, mobile station and fixed box, first spout has been seted up to the workstation downside, and the workstation downside is provided with the bottom plate, and both sides face all is provided with the handle about the workstation simultaneously, the bottom plate upside is provided with first slider, and first slider sets up inside first spout, the bottom plate upside is provided with the spacing screw, and the spacing screw sets up respectively in first slider front and back both sides, the workstation upside is seted up flutedly, and both sides all are seted up first internal screw hole around the workstation, and first internal screw hole downside is provided with the second internal screw hole simultaneously, the recess upside is provided with first slider, and both sides face all are provided with first pulley around the first slider, and the inside first platform that places of recess is provided with of recess simultaneously, the second spout has been seted up to first side face on the place the platform, and the spacing screw sets up respectively in first slider front and back both sides, and the first connecting screw hole downside is provided with the second internal screw hole simultaneously, and the first slider is provided with the fourth slider is provided with through the first connecting pipe, the side is connected to the first side, the first slider is provided with inside the fourth slider is placed to the side, the fourth connecting box is provided with the side through the first connecting pipe, the first slider is provided with inside the fourth slider is placed to the side, the fourth connecting box is provided with the fourth connecting box is simultaneously placed on the side to the side, and the connecting pipe is connected with the drill bit through a second connecting screw.
Preferably, the first fixed plate that places is provided with the first fixed plate top, and first fixed plate downside is provided with the second slider, and the second slider is connected with the third spout through the second pulley simultaneously, first fixed plate upside is provided with first fixed station, and first fixed station leading flank is provided with the third slider, first slide opening has been seted up to first fixed station leading flank, and first slide opening sets up between the third slider, first pneumatic cylinder sets up inside first fixed station, and first pneumatic cylinder upside is provided with first hydraulic stem, and first hydraulic stem upside is provided with the head rod simultaneously, the head rod runs through first slide opening, and head rod leading flank is provided with the rack.
Preferably, the second fixed plate sets up in first place the platform top, and the second fixed plate sets up on the mobile station right side, and the side is provided with the second fixed station on the second fixed plate simultaneously, second fixed station leading flank is provided with the second slider, and the second sliding hole has been seted up to second fixed station leading flank, and the second sliding hole sets up between the second slider simultaneously, the second pneumatic cylinder sets up inside the second fixed station, and the side is provided with the second hydraulic stem on the second pneumatic cylinder, and the side is provided with the second connecting rod on the second hydraulic stem simultaneously, the second connecting rod runs through the second sliding hole, and the second connecting rod leading flank is provided with the fixed box, and the fixed box right side is provided with the motor simultaneously, the motor is connected with the motor shaft, and the motor shaft left end is provided with the pivot, and the pivot runs through the fixed box simultaneously.
Preferably, the bottom plate is in sliding connection through a connection mode between the first sliding block and the first sliding groove.
Preferably, the first internal threaded hole and the second internal threaded hole are symmetrically arranged with respect to the central axis of the workbench.
Preferably, the first placing table is in sliding connection with the first pulley through a second sliding groove.
Preferably, the length of the material box is longer than the distance between the front inner side and the rear inner side of the groove.
Preferably, the connection mode between the fixed box and the second sliding piece is sliding connection.
Preferably, the drill bit is connected with the connecting pipe in a rotating way.
Compared with the prior art, the horizontal boring machine for joint drilling has the advantages that the horizontal boring machine for joint drilling,
When the horizontal boring machine is used for processing a workpiece, the horizontal boring machine is provided with the material box, so that scraps generated during processing the workpiece can fall into the material box in time, the scraps are not easy to fall into the sliding rail, and a moving table on the workbench can be moved conveniently;
The first sliding block and the first pulley are arranged in the workbench, so that when the third sliding groove on the first placing table is worn, the first placing table slides on the first sliding block and the first pulley, and the first placing table is convenient to replace, so that the cost is reduced;
The connecting pipe and the second connecting screw are arranged, when the drill bit needs to be replaced, the second connecting screw is detached, and the drill bit can be detached from the connecting pipe for replacement, so that the horizontal boring machine is convenient for processing different workpieces;
The horizontal boring machine is provided with the first hydraulic cylinder and the second hydraulic cylinder, and when the horizontal boring machine is used for machining a workpiece, the first hydraulic cylinder and the second hydraulic cylinder respectively drive the drill bit to carry out height adjustment, so that the workpiece is convenient to machine.
Drawings
FIG. 1 is a schematic elevational view of the present invention;
FIG. 2 is a left-hand structural schematic diagram of the present invention;
FIG. 3 is a right side view of the present invention;
FIG. 4 is a schematic top view of the present invention;
FIG. 5 is a schematic top view of the table of the present invention;
FIG. 6 is a schematic diagram of the front view of the workbench of the present invention;
FIG. 7 is an enlarged schematic view of the structure of FIG. 1A according to the present invention;
FIG. 8 is an enlarged schematic view of the structure of FIG. 1B according to the present invention;
FIG. 9 is an enlarged schematic view of the structure of FIG. 1 at C in accordance with the present invention;
FIG. 10 is an enlarged schematic view of the structure of FIG. 2D according to the present invention;
fig. 11 is an enlarged view of the structure of fig. 2 at E according to the present invention.
In the figure, 1, a workbench; 2, first sliding groove, 3, bottom plate, 4, first sliding block, 5, limit screw, 6, handle, 7, groove, 8, first internal thread hole, 9, second internal thread hole, 10, first sliding piece, 11, first pulley, 12, first placing table, 13, second sliding groove, 14, third sliding groove, 15, first connecting screw, 16, first fixing plate, 17, second sliding block, 18, second pulley, 19, first fixing table, 20, third sliding block, 21, first sliding hole, 22, first hydraulic cylinder, 23, first hydraulic rod, 24, first connecting rod, 25, placing frame, 26, moving table, 28, fourth sliding groove, 29, material box, 30, fourth sliding block, 31, second fixing plate, 32, second fixing table, 33, second sliding piece, 34, second sliding hole, 35, second hydraulic cylinder, 36, second hydraulic rod, 37, second connecting rod, 38, fixing box, 39, motor, 40, motor shaft, 41, 42, 43, second connecting rod, and drill bit.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-11, the invention provides a technical scheme that as shown in fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6 and fig. 7, a first sliding groove 2 is formed in the lower side of a workbench 1, a bottom plate 3 is arranged on the lower side of the workbench 1, the bottom plate 3 is in sliding connection with the first sliding groove 2 through a connection mode between the first sliding block 4, so that the workbench 1 is convenient to detach for maintenance or maintenance, handles 6 are arranged on the left side and the right side of the workbench 1, a first sliding block 4 is arranged on the upper side of the bottom plate 3, the first sliding block 4 is arranged in the first sliding groove 2, limit screws 5 are respectively arranged on the front side and the rear side of the first sliding block 4, grooves 7 are formed in the upper side of the workbench 1, first internal threaded holes 8 are respectively formed in the front side and the rear side of the workbench 1, the first internal threaded holes 8 and the second internal threaded holes 9 are symmetrically arranged with respect to the central axis of the workbench 1, so that first connecting screws 15 are convenient to detach for maintenance or maintenance, meanwhile, the first connecting screws 15 are respectively arranged on the first internal threaded holes 8 and the second threaded holes 12 and the second threaded holes 17 are respectively arranged on the first workbench and the second side and the second sliding block 9, and the second threaded holes 31 are convenient to fix the first and the horizontal type boring machine, and the second boring machine is convenient to process.
As shown in fig. 5 and 10, the upper side of the groove 7 is provided with a first slider 10, the front side and the rear side of the first slider 10 are both provided with a first pulley 11, meanwhile, the groove 7 is internally provided with a first placing table 12, and the first placing table 12 is in sliding connection with the first pulley 11 through a second sliding groove 13, so that when a third sliding groove 14 on the upper side of the first placing table 12 is worn, the first placing table 12 is convenient to replace, the cost is reduced, a second sliding groove 13 is formed in the lower side of the first placing table 12, the second sliding groove 13 is arranged outside the first pulley 11, and a third sliding groove 14 is formed in the upper side of the first placing table 12.
As shown in fig. 1, 3, 4 and 11, the first connecting screws 15 are respectively disposed at front and rear sides of the working table 1, and the first connecting screws 15 are connected with the first placing table 12 through the second internal threaded holes 9, so that the first placing table 12, the second sliding block 17, the moving table 26 and the second fixing plate 31 are conveniently fixed through the first connecting screws 15.
As shown in fig. 2,3, 8 and 9, the moving table 26 is disposed above the first placing table 12, and the moving table 26 is disposed on the right side of the first fixing plate 16, while the moving table 26 is connected with the third chute 14 through the second pulley 18, a fourth chute 28 is disposed on the upper side of the moving table 26, a material box 29 is disposed on the upper side of the moving table 26, and the length of the material box 29 is greater than the distance between the front and rear inner sides of the groove 7, so that scraps generated during workpiece processing can fall into the material box 29, so that the third chute 14 is not easily blocked, a fourth slider 30 is disposed on the lower side of the material box 29, and the fourth slider 30 is disposed in the fourth chute 28, a connecting pipe 42 is disposed at the left end of the fixing box 38, and a drill bit 43 is disposed in the left inner side of the connecting pipe 42, while the connecting pipe 42 is connected with the drill bit 43 through a second connecting screw 44, and the drill bit 43 is connected with the connecting pipe 42 in a rotating manner, so that the drill bit 43 is convenient to rotate for workpiece processing.
As shown in fig. 1 and 3, a first fixing plate 16 is disposed above the first placement table 12, a second sliding block 17 is disposed on the lower side of the first fixing plate 16, meanwhile, the second sliding block 17 is connected with the third sliding groove 14 through a second pulley 18, a first fixing table 19 is disposed on the upper side of the first fixing plate 16, a third sliding block 20 is disposed on the front side of the first fixing table 19, a first sliding hole 21 is disposed on the front side of the first fixing table 19, the first sliding hole 21 is disposed between the third sliding blocks 20, a first hydraulic cylinder 22 is disposed inside the first fixing table 19, a first hydraulic rod 23 is disposed on the upper side of the first hydraulic cylinder 22, a first connecting rod 24 is disposed on the upper side of the first hydraulic rod 23, the first connecting rod 24 penetrates through the first sliding hole 21, a placement frame 25 is disposed on the front side of the first connecting rod 24, and the placement frame 25 is enabled to conveniently drive a workpiece to be adjusted in height through the first hydraulic rod 23.
As shown in fig. 1,2 and 3, the second fixing plate 31 is disposed above the first placing table 12, and the second fixing plate 31 is disposed on the right side of the moving table 26, meanwhile, the upper side surface of the second fixing plate 31 is provided with the second fixing table 32, the front side surface of the second fixing table 32 is provided with the second sliding piece 33, and the front side surface of the second fixing table 32 is provided with the second sliding hole 34, meanwhile, the second sliding hole 34 is disposed between the second sliding pieces 33, the second hydraulic cylinder 35 is disposed inside the second fixing table 32, and the upper side surface of the second hydraulic cylinder 35 is provided with the second hydraulic rod 36, and meanwhile, the upper side surface of the second hydraulic rod 36 is provided with the second connecting rod 37, the second connecting rod 37 penetrates through the second sliding hole 34, and the front side surface of the second connecting rod 37 is provided with the fixing box 38, the connecting mode between the fixing box 38 and the second sliding piece 33 is a sliding connection, the fixing box 38 slides through the second sliding piece 33, so that the fixing box 38 moves up and down stably, meanwhile, the right side of the fixing box 38 is provided with the motor 39, the motor shaft 40 is connected with the motor shaft 40, and the left side of the motor shaft 40 is provided with the second connecting rod 40, and the rotary shaft 41 is convenient for machining the rotary shaft 41, and the rotary shaft 41 is convenient to penetrate through the rotary shaft 43.
Working principle: when the horizontal boring machine for joint drilling is used, a workpiece is fixed on the placing frame 25, the second sliding block 17 drives the second pulley 18 to slide in the third sliding groove 14 by pulling the material box 29, so that the material box 29 is moved, meanwhile, the second sliding block 17 drives the second pulley 18 to slide in the third sliding groove 14, so that the placing frame 25 drives the workpiece to move, after the position adjustment is finished, the first connecting screw 15 penetrates through the first internal threaded hole 8 to fix the moving table 26 and the second fixing plate 31 respectively, an external power supply is connected, the first hydraulic cylinder 22 and the second hydraulic cylinder 35 are started, the second hydraulic cylinder 35 drives the second connecting rod 37 to adjust the height through the second hydraulic rod 36, the fixing box 38 slides on the second sliding piece 33, so that the height of the drill bit 43 is adjusted, simultaneously, the first hydraulic cylinder 22 drives the first connecting rod 24 to adjust the height through the first hydraulic rod 23, so that the placing rack 25 drives the workpiece to adjust the height, the motor 39 is started, the motor 39 drives the rotating shaft 41 through the motor shaft 40, so that the drill bit 43 rotates to process the workpiece, scraps generated during processing directly fall into the lower side material box 29, the scraps are not easy to fall into the third sliding groove 14, the inside of the third sliding groove 14 is not easy to be blocked, when the inside of the third sliding groove 14 is worn and needs to be replaced, the second sliding block 17, the moving table 26 and the second fixing plate 31 are slid and taken down, the first connecting screw 15 is taken down from the inside of the second internal threaded hole 9, simultaneously, the first placing table 12 starts to slide, the second sliding groove 13 at the lower side of the first placing table 12 slides on the first sliding piece 10 and the first sliding groove 11, the first placing table 12 is taken down and replaced, therefore, the cost is reduced, the power supply is turned off after the machining is completed, the workbench 1 is required to be maintained, the workbench 1 is pushed forward and backward through the handle 6 by taking down the limit screw 5, the first sliding chute 2 slides on the first sliding block 4, the workbench 1 is taken down for maintenance, and the content which is not described in detail in the specification belongs to the prior art known to the person skilled in the art.
Although the present invention has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present invention.

Claims (7)

1. The horizontal boring machine for joint drilling comprises a workbench (1), a first connecting screw (15), a first hydraulic cylinder (22), a moving table (26), a second fixing plate (31), a second hydraulic cylinder (35) and a fixing box (38), and is characterized in that a first sliding groove (2) is formed in the lower side surface of the workbench (1), a bottom plate (3) is arranged on the lower side of the workbench (1), handles (6) are arranged on the left side surface and the right side surface of the workbench (1), a first sliding block (4) is arranged on the upper side surface of the bottom plate (3), the first sliding block (4) is arranged in the first sliding groove (2), limit screws (5) are arranged on the upper side surface of the bottom plate (3) and are respectively arranged on the front side and the rear side of the first sliding block (4), grooves (7) are formed in the upper side surface of the workbench (1), first inner threaded holes (8) are formed in the front side and the rear side surface of the workbench (1), a second inner threaded hole (9) is formed in the lower side of the workbench, a first sliding block (10) is arranged on the upper side surface of the first sliding block (7), a first sliding block (10) is arranged on the first sliding block (10), a first sliding block (11) is arranged on the upper side surface of the first sliding block (10), the first placing table (12) is provided with a second chute (13) on the lower side, the second chute (13) is arranged on the outer side of the first pulley (11), the first placing table (12) is provided with a third chute (14) on the upper side, the first connecting screws (15) are respectively arranged on the front side and the rear side of the workbench (1), the first connecting screws (15) are connected with the first placing table (12) through second internal threaded holes (9), the first placing table (12) is provided with a first fixing plate (16) on the upper side, the moving table (26) is arranged above the first placing table (12), the moving table (26) is arranged on the right side of the first fixing plate (16), the moving table (26) is connected with the third chute (14) through a second pulley (18), the upper side of the moving table (26) is provided with a material box (29), the lower side of the material box (29) is provided with a fourth sliding block (30), the fourth sliding block (30) is arranged on the upper side of the moving table (26), the fourth sliding block (30) is arranged inside the fourth sliding block (30), the fourth sliding block (30) is arranged on the left side of the moving table (26) and the fourth sliding block (26) is provided with a connecting pipe (42), meanwhile, the connecting pipe (42) is connected with the drill bit (43) through a second connecting screw (44);
The lower side of the first fixed plate (16) is provided with a second sliding block (17), the second sliding block (17) is connected with a third sliding groove (14) through a second pulley (18), the upper side of the first fixed plate (16) is provided with a first fixed table (19), the front side of the first fixed table (19) is provided with a third sliding block (20), the front side of the first fixed table (19) is provided with a first sliding hole (21), the first sliding hole (21) is arranged between the third sliding blocks (20), the first hydraulic cylinder (22) is arranged inside the first fixed table (19), the upper side of the first hydraulic cylinder (22) is provided with a first hydraulic rod (23), the upper side of the first hydraulic rod (23) is provided with a first connecting rod (24), the first connecting rod (24) penetrates through the first sliding hole (21), and the front side of the first connecting rod (24) is provided with a placing rack (25);
The second fixed plate (31) sets up in first platform (12) top of placing, and second fixed plate (31) sets up on mobile station (26) right side, and the side is provided with second fixed station (32) on second fixed plate (31) simultaneously, second fixed station (32) leading flank is provided with second slider (33), and second fixed station (32) leading flank has seted up second slide hole (34), and second slide hole (34) set up between second slider (33) simultaneously, second pneumatic cylinder (35) set up in second fixed station (32) inside, and second pneumatic cylinder (35) are gone up the side and are provided with second hydraulic stem (36), and second hydraulic stem (36) are gone up the side and are provided with second connecting rod (37) simultaneously, second connecting rod (37) run through second slide hole (34), and second connecting rod (37) leading flank are provided with fixed box (38), and fixed box (38) right side is provided with motor (39) simultaneously, motor (39) are connected with motor shaft (40), and left side (40) are provided with pivot (41) and run through pivot (41).
2. The horizontal boring machine for joint drilling according to claim 1, wherein the bottom plate (3) is connected with the first sliding groove (2) in a sliding manner through the first sliding block (4).
3. A horizontal boring machine for joint drilling according to claim 1, wherein the first and second internally threaded holes (8, 9) are each symmetrically arranged about the central axis of the table (1).
4. The horizontal boring machine for joint drilling according to claim 1, wherein the first placing table (12) is connected with the first pulley (11) in a sliding manner through the second sliding groove (13).
5. A horizontal boring machine for joint drilling as claimed in claim 1, wherein the length of the magazine (29) is greater than the distance between the front and rear inner sides of the recess (7).
6. A horizontal boring machine for joint drilling according to claim 1, wherein the connection between the stationary box (38) and the second slide (33) is a sliding connection.
7. A horizontal boring machine for joint drilling according to claim 1, wherein the connection between the drill bit (43) and the connecting pipe (42) is a rotary connection.
CN201910960742.1A 2019-10-11 2019-10-11 A horizontal boring machine for joint drilling Active CN110744088B (en)

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CN201910960742.1A CN110744088B (en) 2019-10-11 2019-10-11 A horizontal boring machine for joint drilling

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CN110744088B true CN110744088B (en) 2025-01-07

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