CN109676176B - Repairing and boring machine for hydraulic support shield beam - Google Patents
Repairing and boring machine for hydraulic support shield beam Download PDFInfo
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- CN109676176B CN109676176B CN201910087668.7A CN201910087668A CN109676176B CN 109676176 B CN109676176 B CN 109676176B CN 201910087668 A CN201910087668 A CN 201910087668A CN 109676176 B CN109676176 B CN 109676176B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/003—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for drilling elongated pieces, e.g. beams
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Abstract
The invention discloses a repairing and boring machine for a hydraulic support shield beam, which comprises: the fastening device comprises two positioning plates and two guide rods; each positioning plate is provided with two positioning holes which are symmetrically arranged; two guide rods are arranged between the two positioning plates in parallel, and two ends of each guide rod are respectively arranged in one positioning hole in a penetrating mode. The cutting device comprises a guide disc, a hydraulic motor, a U-shaped boring cutter and a cutter holder; the two ends of the guide disc are provided with guide sleeves, the moving holes of the guide sleeves are sleeved on the two guide rods and can move along the guide rods, and the guide disc also comprises an alignment mounting hole which is positioned in the center of the guide disc; the hydraulic motor is arranged in the alignment mounting hole and can move along with the guide disc; the U-shaped boring cutter and the cutter holder are arranged at the front end of the hydraulic motor and driven to rotate by the hydraulic motor. And the feeding device is contacted with the rear part of the cutting device and can push the cutting device to move forwards along the guide rod. Therefore, the repairing work can be completed underground, and labor and time are saved.
Description
Technical Field
The invention relates to the field of coal mine mechanical equipment maintenance, in particular to a repairing and boring machine for a hydraulic support shield beam.
Background
At present, after a fully mechanized mining face is worn in long-term operation, the worn hydraulic support needs to be integrally lifted to a ground mechanical repair shop, the hydraulic support is disassembled, then an independent shield beam is mounted and clamped on a large boring machine, and a damaged hole is bored. In the prior art, a cutting machine tool for cutting and processing a hydraulic support shield beam wear hole on site on a coal mine underground comprehensive mechanized coal face does not exist, and machines and data which can be used for reference do not exist in the field.
Therefore, in order to solve the problems of multiple devices, multiple types and multiple processes and long boring period in the process of repairing the damaged hole of the shield beam by boring, the hydraulic support shield beam repairing boring machine capable of cutting and machining the damaged hole of the shield beam on the spot on the fully mechanized coal mining face under the coal mine is necessary.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
The invention aims to provide a repairing and boring machine for a hydraulic support shield beam, which can finish the repairing work of a pin hole of the hydraulic support shield beam on a working site.
In order to achieve the purpose, the invention provides a repairing and boring machine for a hydraulic support shield beam, which comprises a fastening device, a cutting device and a feeding device. The fastening device also comprises two positioning plates and two guide rods; each positioning plate is provided with two positioning holes which are symmetrically arranged; two guide rods are arranged between the two positioning plates in parallel, and two ends of each guide rod are respectively arranged in one positioning hole in a penetrating mode. The cutting device comprises a guide disc, a hydraulic motor, a U-shaped boring cutter and a cutter holder; the two ends of the guide disc are provided with guide sleeves, the moving holes of the guide sleeves are sleeved on the two guide rods and can move along the guide rods, and the guide disc also comprises an alignment mounting hole which is positioned in the center of the guide disc; the hydraulic motor is arranged in the alignment mounting hole and can move along with the guide disc; the U-shaped boring cutter and the cutter holder are arranged at the front end of the hydraulic motor and driven to rotate by the hydraulic motor. And the feeding device is contacted with the rear part of the cutting device and can push the cutting device to move forwards along the guide rod.
In a preferred embodiment, the positioning plate is in a circular ring structure and comprises two positioning sleeves and a plurality of fastening screw holes. The two positioning sleeves are symmetrically arranged on the positioning plate, the positioning sleeves protrude towards one surface along the axial direction of the positioning plate, the positioning holes are arranged on the positioning sleeves, and the central connecting line of the two positioning holes penetrates through the circle center of the positioning plate; the fastening screw holes are uniformly arranged on the circumferential surface of the positioning plate, and the extended lines of the axes of the fastening screw holes intersect at the center of the circle of the positioning plate; the fastening device further comprises a plurality of fastening bolts which are screwed in the plurality of fastening screw holes.
In a preferred embodiment, the guide rod comprises a guide section and a fastening section. One end of the guide section is provided with a guide hole and a threaded hole connected with the guide hole; one end of the fastening section is provided with a thread section and a positioning section connected with the thread section; wherein the threaded section is screwed in the threaded hole, and the positioning section is in close clearance fit with the guide hole; and the outer diameter of the guide section is the same as that of the fastening section.
In a preferred embodiment, the feeding device comprises a lead screw, a nut and a hand wheel. The front end of the screw rod is propped against the central position of the rear part of the hydraulic motor; the screw nut is locked on the screw rod in a rotating way; the hand wheel is fixedly arranged at the rear end of the lead screw, and the lead screw can be driven to rotate by rotating the hand wheel.
In a preferred embodiment, the tool apron comprises a tool apron hole and a tool clamping groove, and the tool apron hole is sleeved on a front driving shaft of the hydraulic motor; the U-shaped boring tool comprises a tool bar hole and a hard alloy tool bit, wherein the tool bar hole is clamped in the tool clamping groove, and the hard alloy tool bit is used for completing the boring function.
In a preferred embodiment, the fastening section and the guide section of the guide rod also have square abutments which are arranged on the outer circumferential surfaces of the fastening section and the guide section in a mutually engaging manner.
In a preferred embodiment, the hole repairing and boring machine further comprises a hydraulic pump station for driving the hydraulic motor to rotate.
In a preferred embodiment, the pilot disc further comprises a plurality of threaded through holes uniformly arranged around the periphery of the alignment mounting hole for mounting the hydraulic motor in the alignment mounting hole by a plurality of mounting bolts.
Compared with the prior art, the repairing and boring machine for the hydraulic support shield beam has the following beneficial effects: the worn hydraulic support shield beam does not need to be conveyed to the ground from the underground for repair, the repair boring machine can complete repair work on the underground site, manpower and material resources are greatly saved, and the repair work efficiency is greatly improved.
Drawings
Fig. 1 is a front view of a repairing and boring machine according to an embodiment of the present invention.
Fig. 2 is a left side view of fig. 1.
Fig. 3 is a right side view of fig. 1.
Fig. 4 is a top view of fig. 1.
Fig. 5 is a schematic perspective view of a repairing and boring machine according to an embodiment of the present invention.
Fig. 6 is a front view of a guide plate of the repairing boring machine according to an embodiment of the present invention.
Fig. 7 is a left side view of fig. 6.
Fig. 8 is a front view of a positioning plate of the repairing boring machine according to an embodiment of the present invention.
Fig. 9 is a left side view of fig. 8.
Fig. 10 is a schematic view of a guide bar of the repairing boring machine according to an embodiment of the present invention.
Fig. 11 is a front view of a tool holder of the repairing boring machine according to an embodiment of the present invention.
Fig. 12 is a left side view of fig. 11.
Fig. 13 is a front view of the u-shaped boring tool of the u-boring repairing machine according to the embodiment of the present invention.
Fig. 14 is a left side view of fig. 13.
Fig. 15 is a schematic perspective view of an oil pump station of the hole boring machine according to an embodiment of the present invention.
Fig. 16 is a schematic view illustrating alignment and installation of an alignment shaft and an alignment sleeve of the repairing boring machine according to an embodiment of the present invention.
Description of the main reference numerals:
1-positioning plate, 11-fastening screw hole, 2-U-shaped boring cutter, 3-cutter holder, 4-guide plate, 5-mounting bolt, 6-guide rod, 61-guide section, 62-fastening section, 63-square table, 7-hydraulic motor, 8-fastening bolt, 9-screw, 10-nut, 11-handwheel, 12-fabrication hole, 13-shielding beam, 14-abraded pin hole, 15-reinforcing plate, 151-round boss, 16-alignment mounting hole, 17-moving hole, 18-threaded through hole, 19-guide sleeve, 20-upright plate, 21-positioning hole, 22-positioning sleeve, 23-positioning section, 24-guide hole, 25-threaded section, 26-threaded hole, 27-cutter holder hole, 28-a cutter clamping groove, 29-a cutter rod hole, 30-a hard alloy cutter head, 31-a fastening device, 32-a feeding device, 33-a cutting device, 34-a hydraulic pump station, 35-an alignment shaft and 36-an alignment sleeve.
Detailed Description
The following detailed description of the present invention is provided in conjunction with the accompanying drawings, but it should be understood that the scope of the present invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1 to 5, fig. 1 is a front view of a repairing and boring machine according to an embodiment of the present invention. Fig. 2 is a left side view of fig. 1. Fig. 3 is a right side view of fig. 1. Fig. 4 is a top view of fig. 1. Fig. 5 is a schematic perspective view of a repairing and boring machine according to an embodiment of the present invention. The repairing and boring machine for the hydraulic support shield beam comprises a fastening device 31, a cutting device 33 and a feeding device 32.
As shown in fig. 8 to 9, fig. 8 is a front view of a positioning plate of a repairing and boring machine according to an embodiment of the present invention. Fig. 9 is a left side view of fig. 8. In some embodiments, the fastening device 31 further comprises two positioning plates 1 and two guide rods 6; two guide rods 6 are arranged between the two positioning plates 1 in parallel, and two ends of each guide rod 6 are respectively arranged in one positioning hole 21 in a penetrating manner. The positioning plate 1 is in a circular ring structure, and each positioning plate 1 is provided with two positioning holes 21 and a plurality of fastening screw holes 11 which are symmetrically arranged. The positioning sleeve 22 protrudes towards one surface along the axial direction of the positioning plate 1, the positioning holes 21 are arranged on the positioning sleeve 22, and the central connecting line of the two positioning holes 21 passes through the circle center of the positioning plate 1; the fastening screw holes 11 are uniformly arranged on the circumferential surface of the positioning plate 1, and the extension lines of the axes of the fastening screw holes 11 intersect at the center of the circle of the positioning plate 1. The fastening device 31 further comprises a plurality of fastening bolts 8 screwed into the plurality of fastening screw holes 11.
Fig. 10 is a schematic view of a guide bar of a repairing and boring machine according to an embodiment of the present invention, as shown in fig. 10. In some embodiments, the guide bar 6 comprises a guide section 61 and a fastening section 62. One end of the guide section 61 has a guide hole 24 and a threaded hole 26 engaged with the guide hole 24. One end of the fastening section 62 is provided with a threaded section 25 and a positioning section 23 engaged with the threaded section 25; wherein the threaded section 25 is screwed in the threaded hole 26, and the positioning section 23 and the guide hole 24 are in close clearance fit; and the guide section 61 has the same outer diameter as the fastening section 62. The fastening section 62 and the guide section 61 of the guide bar 6 are further provided with a plurality of square stands 63 which are arranged on the outer circumferential surfaces of the fastening section 62 and the guide section 61 in engagement with each other.
As shown in fig. 6 to 7, fig. 6 is a front view of a guide disc of a repairing and boring machine according to an embodiment of the present invention. Fig. 7 is a left side view of fig. 6. In some embodiments the cutting means 33 comprise a guide disc 4, a hydraulic motor 7 and u-shaped boring tool 2 and a holder 3. The two ends of the guide disc 4 are provided with guide sleeves 19, the moving holes 17 of the guide sleeves 19 are sleeved on the two guide rods 6 and can move along the guide rods 6, and the guide disc 4 further comprises an alignment mounting hole 16 which is positioned in the center of the guide disc 4. The hydraulic motor 7 is installed in the alignment installation hole 16, and the hydraulic motor 7 can move with the guide disc 4. The pilot disc 4 further comprises a plurality of threaded through holes 18 uniformly arranged at the periphery of the alignment mounting hole 16, the plurality of threaded through holes 18 being used to mount the hydraulic motor 7 in the alignment mounting hole 16 by means of a plurality of mounting bolts 5.
As shown in fig. 11 to 14, fig. 11 is a front view of a tool holder of a repairing and boring machine according to an embodiment of the present invention. Fig. 12 is a left side view of fig. 11. Fig. 13 is a front view of the u-shaped boring tool of the u-boring repairing machine according to the embodiment of the present invention. Fig. 14 is a left side view of fig. 13. In some embodiments, the U-shaped boring tool 2 and the tool holder 3 are provided at the front end of the hydraulic motor 7 and are driven to rotate by the hydraulic motor 7. The tool apron 3 comprises a tool apron hole 27 and a tool clamping groove 28, and the tool apron hole 27 is sleeved on a front end driving shaft of the hydraulic motor 7; the U-shaped boring tool 2 comprises a tool bar hole 29 and a hard alloy tool bit 30, wherein the tool bar hole 29 is clamped in the tool clamping groove 28, and the hard alloy tool bit 30 is used for finishing a boring function.
Referring to fig. 1, 4 and 5, in some embodiments, the feeding device 32 contacts the rear portion of the cutting device 33 and pushes the cutting device 33 to move forward along the guide bar 6. The feeding device 32 includes a lead screw 9, a nut 10, and a hand wheel 11. The front end of the screw rod 9 is propped against the rear center position of the hydraulic motor 7; the screw nut 10 is screwed on the screw rod 9; the hand wheel 11 is fixedly arranged at the rear end of the screw rod 9, and the screw rod 9 can be driven to rotate by rotating the hand wheel 11.
Referring to fig. 15, fig. 15 is a schematic perspective view of an oil pump station of a hole repairing and boring machine according to an embodiment of the present invention. In some embodiments, the repairing boring machine further comprises a hydraulic pump station 34, and the hydraulic pump station 34 is connected with the hydraulic motor 7 through a hydraulic pipeline and is used for driving the hydraulic motor 7 to rotate.
As in the foregoing background, after the fully mechanized mining face of the hydraulic support runs for a long time, the pin holes of the shield beam of the hydraulic support are worn, the shield beam of the hydraulic support includes a plurality of reinforcement plates that are parallel to each other and separated by a certain distance, the reinforcement plates are provided with the pin holes, and the pin holes on two adjacent reinforcement plates are coaxial in nature. The wear of the pin hole is generally that one end with large stress is seriously worn, one section with small stress is light, and the other end with small stress is basically not worn, so that the worn pin hole 14 generally has a conical hole shape with one larger end and one smaller end. The repair work is generally to repair the worn pin hole 14 into a through hole with the same size at both ends by using a boring machine. The round boss protruding from the reinforcing plate by a certain height is arranged around the common pin hole, and the round boss is originally used for prolonging the length of the pin hole and playing a role in reinforcing the stress of the pin hole.
As shown in fig. 16, fig. 16 is a schematic view illustrating alignment and installation of an alignment shaft and an alignment sleeve of the repairing and boring machine according to an embodiment of the present invention. In some embodiments, the method for repairing and boring the hydraulic support shield beam of the invention actually works as follows:
first, the two positioning plates 1 are respectively abutted against the two adjacent reinforcing plates 15 in a manner that the positioning sleeves 22 are opposite to each other. Then, two guide rods 6 are firstly inserted into the moving holes 17 of the guide sleeve 19 of the guide disc 4, and two ends of each guide rod 6 are respectively inserted into the positioning holes 21 of the positioning plate 1. Then, the aligning shaft 35 is inserted into the aligning sleeve 36, the aligning sleeve 36 is inserted into the aligning mounting hole 16 in the center of the guide disc 4, and both ends of the aligning shaft 35 simultaneously penetrate through the small ends of the worn pin holes 14 on the two adjacent reinforcing plates 15 (note: the outer diameter of the aligning sleeve 36 is the same as the inner diameter of the aligning mounting hole 16 and adopts small clearance fit; the diameter of the aligning shaft 35 is the same as the diameter of the small end of the worn pin hole 14 and also the inner diameter of the aligning sleeve 36 and also adopts small clearance fit). The alignment shaft 35 and the alignment sleeve 36 function to ensure that the alignment mounting hole 16 of the guide disc 4 is substantially coaxial with the small ends of the worn pin holes 14 in the two adjacent reinforcing plates 15. The square table 63 on the fastening section 62 of the guide bar 6 is clamped by a tool (such as a wrench), and the fastening section 62 is rotated until the two ends of the two guide bars 6 are pressed between the two adjacent reinforcing plates 15. Then, a tool is used to screw the fastening bolt 8 on the positioning plate 1 to tightly abut against the outer circular surface of the circular boss 151 on the reinforcing plate 15 until the positioning plate 1 is completely fixed on the circular boss 151 and the free movement of the guide plate 4 along the guide rod 6 is ensured. The alignment shaft 35 and the alignment sleeve 36 are withdrawn after completion. The hydraulic motor 7 with the U-shaped boring tool 2 and the tool holder 3 assembled at the front end is installed in the aligned installation hole 16 through the threaded through hole 18 of the guide disc 4 by the installation bolt 5. And then the screw 10 is arranged in a fabrication hole 12 on another reinforcing plate 15 at the rear end of the hydraulic motor 7, the shape of the screw 10 is formed by overlapping two cylinders, a small step is embedded in the fabrication hole 12, the diameter of a large step is larger than that of the fabrication hole 12 and is pressed on the wall surface of another reinforcing plate, the screw 9 is screwed into the screw 10 from the small step end of the screw 10, and the front end of the screw 9 is propped against the central position of the rear end of the hydraulic motor 7. The hydraulic motor 7 and the hydraulic pump station 34 are connected, the hydraulic pump station 34 is started, the hydraulic motor 7 drives the tool apron 3 and the U-shaped boring tool 2 to rotate, the hand wheel 11 at the other end of the screw 9 is rotated, the screw 9 cannot move due to the limitation of the screw 10 by the other reinforcing plate 15, and therefore the screw 9 can only move forwards, the hydraulic motor 7, the tool apron 3 and the U-shaped boring tool 2 are pushed to slide on the guide rod 6 along with the guide disc 4, and then the boring repair of the worn pin hole 14 is completed. After a worn pin hole 14 is repaired, the hydraulic motor 7 is exchanged to the other side of the guide disc 4 and installed. Because the front end of the hydraulic motor 7 is provided with the positioning circular truncated cone, the diameter of the positioning circular truncated cone is the same as that of the alignment mounting hole 16 of the guide disc 4, and the mounting disc behind the positioning circular truncated cone of the hydraulic motor 7 is provided with a plurality of bolt holes corresponding to the threaded through holes 18 of the guide disc 4 in position and quantity, when the first worn pin hole 14 is repaired, the two positioning plates 1 and the guide disc 4 are aligned, and at the moment, the hydraulic motor 7 is exchanged to the other side of the guide disc 4, and the alignment state can also be ensured. Meanwhile, the lead screw 9 and the nut 10 are also exchanged to the reinforcing plate 15 on the other side, and then another worn pin hole 14 is repaired.
In conclusion, the repairing and boring machine for the hydraulic support shield beam has the following advantages: the worn hydraulic support shield beam does not need to be conveyed to the ground from the underground for repairing, and the repairing boring machine can be used for completing repairing work on the underground site. Complex working links of lifting a hydraulic support weighing about 30 tons to the ground from a hundred meters underground and then transporting the hydraulic support back to the underground for installation are omitted, manpower and material resources are greatly saved, and the repairing working efficiency is greatly improved.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (8)
1. The utility model provides a restoration boring machine of hydraulic support shield beam which characterized in that includes:
a fastening device, comprising:
each positioning plate is provided with two positioning holes which are symmetrically arranged; and
the two guide rods are arranged between the two positioning plates in parallel, and two ends of each guide rod penetrate through one positioning hole respectively; a cutting device, comprising:
the two ends of the guide disc are provided with guide sleeves, moving holes of the guide sleeves are sleeved on the two guide rods and can move along the guide rods, and the guide disc further comprises an alignment mounting hole which is positioned in the center of the guide disc;
the hydraulic motor is arranged in the alignment mounting hole and can move along with the guide disc; and
the U-shaped boring cutter and the cutter holder are arranged at the front end of the hydraulic motor and driven to rotate by the hydraulic motor; and
and the feeding device is in contact with the rear part of the cutting device and can push the cutting device to move forwards along the guide rod.
2. A repairing and boring machine for a hydraulic support shield beam according to claim 1, wherein the positioning plate is of a circular ring structure, and comprises:
the two positioning sleeves are symmetrically arranged on the positioning plate, the positioning sleeves protrude towards one surface along the axial direction of the positioning plate, the positioning holes are arranged on the positioning sleeves, and a central connecting line of the two positioning holes penetrates through the circle center of the positioning plate; and
the fastening screw holes are uniformly arranged on the circumferential surface of the positioning plate, and the extended lines of the axes of the fastening screw holes intersect at the center of the circle of the positioning plate; the fastening device further comprises a plurality of fastening bolts which are screwed in the plurality of fastening screw holes.
3. A hydraulic support shield beam repairing and boring machine as set forth in claim 1, wherein said guide bar comprises:
the guide section is provided with a guide hole and a threaded hole connected with the guide hole at one end; and
the fastening section is provided with a threaded section and a positioning section connected with the threaded section at one end;
the threaded section is screwed in the threaded hole, and the positioning section is in close clearance fit with the guide hole; and the outer diameter of the guide section is the same as that of the fastening section.
4. A hydraulic support shield beam repairing and boring machine as set forth in claim 1, wherein said feeding means comprises:
the front end of the screw rod is abutted against the rear center of the hydraulic motor;
the screw nut is screwed on the lead screw; and
and the hand wheel is fixedly arranged at the rear end of the lead screw, and the hand wheel can be rotated to drive the lead screw to rotate.
5. The hydraulic support shield beam repairing and boring machine as claimed in claim 1, wherein the tool apron comprises a tool apron hole and a tool clamping groove, and the tool apron hole is sleeved on a front end driving shaft of the hydraulic motor;
the U-shaped boring tool comprises a tool bar hole and a hard alloy tool bit, wherein the tool bar hole is clamped in the tool clamping groove, and the hard alloy tool bit is used for finishing a boring function.
6. The repairing and boring machine for a hydraulic support shield beam of claim 3, wherein the fastening section and the guide section of the guide bar further have a plurality of square blocks which are arranged on outer circumferential surfaces of the fastening section and the guide section in engagement with each other.
7. The repairing and boring machine for the hydraulic support shield beam according to claim 1, wherein the repairing and boring machine further comprises a hydraulic pump station for driving the hydraulic motor to rotate.
8. The hydraulic support shelter beam repair boring machine of claim 1, wherein the pilot disc further comprises a plurality of threaded through holes evenly arranged around the alignment mounting hole for mounting the hydraulic motor in the alignment mounting hole by a plurality of mounting bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087668.7A CN109676176B (en) | 2019-01-29 | 2019-01-29 | Repairing and boring machine for hydraulic support shield beam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910087668.7A CN109676176B (en) | 2019-01-29 | 2019-01-29 | Repairing and boring machine for hydraulic support shield beam |
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| Publication Number | Publication Date |
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| CN109676176A CN109676176A (en) | 2019-04-26 |
| CN109676176B true CN109676176B (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910087668.7A Active CN109676176B (en) | 2019-01-29 | 2019-01-29 | Repairing and boring machine for hydraulic support shield beam |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110732908A (en) * | 2019-11-22 | 2020-01-31 | 台州市神鹰机床有限公司 | Servo double-guide-rod transmission spindle head for cutter expanding |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1592754A (en) * | 1924-02-14 | 1926-07-13 | Tracy F Brackett | Portable tapping machine |
| CA1121143A (en) * | 1980-04-08 | 1982-04-06 | Hans J. Thiemie | Portable machining assembly |
| EP0582627A4 (en) * | 1991-05-02 | 1994-06-22 | Skiltec Engineering Pty Ltd | Internal diameter (i.d.) welding machine, and rotary drive and feed unit therefor |
| CN2535168Y (en) * | 2002-04-26 | 2003-02-12 | 程以正 | Portablle boring machine |
| HU2887U (en) * | 2003-04-02 | 2005-03-29 | Jozsef Hollossy | Apparatus for drilling aligned moles |
| CN2808408Y (en) * | 2005-07-26 | 2006-08-23 | 程晓阳 | Machine for repairing bearing hole |
| CN205128970U (en) * | 2015-12-02 | 2016-04-06 | 大冶有色机电设备修造有限公司 | Bore hole device convenient to on --spot major diameter cylinder hole of restoreing |
| CN108372316B (en) * | 2018-04-20 | 2024-04-02 | 南京苏雷机电开发有限公司 | Portable turning and boring machine |
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