CN213496649U - Large-scale annular workpiece boring device - Google Patents
Large-scale annular workpiece boring device Download PDFInfo
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- CN213496649U CN213496649U CN202022382973.XU CN202022382973U CN213496649U CN 213496649 U CN213496649 U CN 213496649U CN 202022382973 U CN202022382973 U CN 202022382973U CN 213496649 U CN213496649 U CN 213496649U
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Abstract
A large-scale annular workpiece boring device comprises a front end fixing plate, a feeding motor, a feeding screw rod, a rear end fixing plate, a transmission motor, a gearbox, a cutter bar, a feeding top plate and an annular workpiece; the front end fixing plate is provided with a front end positioning shaft, a cutter bar front end positioning hole, a lead screw mounting hole and a motor mounting bracket; and the rear end fixing plate is provided with a rear end positioning shaft and a cutter bar rear end positioning hole. The beneficial effects are that: the annular workpiece is provided with the connecting hole, so that the cutter bar and the hole to be machined can be positioned accurately and quickly, the machining feeding operation is controlled by a mechanical transmission structure, and the machining precision is high and the machining efficiency is high; the maintenance cost and the rejection rate of the workpiece are reduced, and the production cost is saved.
Description
Technical Field
The utility model belongs to the technical field of the machine tooling, concretely relates to large-scale cyclic annular work piece bore hole device.
Background
In industrial production equipment, a plurality of heavy equipment are provided with large-sized annular workpieces, the diameter of the annular workpieces can reach more than 5 meters, and mounting connecting holes are uniformly distributed on the annular workpieces along the axial direction and are used for being assembled and connected with other equipment. In the actual production process, because of the load loss of the used equipment, the annular workpiece connecting hole is deformed sometimes, so that the workpiece is scrapped, and the period for producing a new workpiece with a connecting hole of a proper size is longer, so that the construction period is delayed. The most ideal mode is to carry out reaming operation on the connecting hole of the existing annular workpiece, but aiming at the annular workpiece, the reaming operation is difficult to position, the precision is difficult to control, and the problems of time consumption and labor consumption are also caused.
In another case, the large annular workpiece is generally formed by assembling and combining two semicircular structures, for example, a large annular gear ring used on cement production equipment is the structure, a matching method is adopted in a connecting and positioning mode during installation, a positioning pin hole is arranged at a joint, a positioning pin is installed to enable the large gear ring to complete matching in the annular direction, and then the two semicircles are fixedly connected together through a fixing bolt structure. Because the load of the equipment in operation is very large, the equipment can creep at the joint, along with the long-term creep abrasion of two to three years, the positioning pin can abrade the positioning pin hole at the joint to be elliptical, the ring-shaped precision of the gear ring can influence the normal operation of the equipment when the abrasion is serious, the gear ring is deformed and scrapped, a new gear ring needs to be replaced, time and labor are consumed, and the production cost is increased. If can maintain the processing to the locating hole of closing the mouth, it is circular to reprocess the oval locating pin hole of wearing and tearing, dispose corresponding locating pin post again, just can be very big save cost, but the reaming operation has the location difficulty equally, and the precision is difficult to control.
Disclosure of Invention
The utility model aims at solving above-mentioned large-scale cyclic annular workpiece mounting hole and close a mouthful locating hole reaming operation location difficulty, precision uncontrollable problem, provide one kind can be on large-scale cyclic annular workpiece accurate location processing equipment and mounting hole and locating hole position to carry out the bore hole device of reaming operation.
In order to achieve the purpose, the technical scheme adopted by the utility model is that the annular workpiece is uniformly provided with mounting connection holes, a front end fixing plate and a rear end fixing plate are arranged, the fixed plate is provided with a cutter bar positioning hole corresponding to the middle position and positioning shafts corresponding to two side positions according to the positions of the three adjacent mounting connection holes on the annular workpiece, and the automatic accurate positioning cutter bar positioning hole is matched with the coaxial center of the hole to be processed through the mounting and matching of the positioning rod on the fixed plate and the adjacent mounting connection holes on two sides of the hole to be processed on the annular workpiece; then, according to the method, a cutter rod capable of axially feeding along the cutter rod positioning hole and the annular workpiece hole to be machined is arranged and installed by relying on the front end fixing plate and the rear end fixing plate, a transmission device for driving the cutter rod to rotate and a lead screw structure for driving the cutter rod to axially feed are arranged and installed, and after a cutter is installed on the cutter rod, the annular workpiece hole to be machined is bored by utilizing the axial feeding and rotating operation of the cutter rod, so that the purpose of accurately repairing and machining the annular workpiece hole to be machined is achieved. The specific technical scheme is as follows:
the utility model discloses a large-scale annular workpiece boring device, which comprises a front end fixing plate, a feeding motor, a feeding lead screw, a rear end fixing plate, a transmission motor, a gearbox, a cutter bar, a feeding top plate and an annular workpiece; the front end fixing plate is provided with a front end positioning shaft, a cutter bar front end positioning hole, a lead screw mounting hole and a motor mounting bracket; a rear end positioning shaft and a cutter bar rear end positioning hole are arranged on the rear end fixing plate; the gearbox is provided with a power input wheel and a power output wheel; a screw rod matching mounting hole and a cutter bar mounting hole are formed in the feeding top plate; the annular workpiece is uniformly provided with mounting and connecting holes, wherein the mounting and connecting holes comprise holes to be machined and positioning holes adjacent to two sides of the holes to be machined; the front end fixing plate is fixedly arranged on a positioning hole in the front end face of the annular workpiece through a front end positioning shaft, and the positioning hole in the front end of the cutter bar and a hole to be machined in the front end face of the annular workpiece are coaxially matched; the rear end fixing plate is fixedly arranged on a positioning hole in the rear end face of the annular workpiece through a rear end positioning shaft, and the positioning hole in the rear end of the cutter bar and a hole to be machined in the rear end face of the annular workpiece are coaxially matched; the feeding screw rod is vertically arranged and installed on the front end fixing plate through a screw rod installation hole; the feeding motor is fixedly arranged on the front end fixing plate through a motor mounting bracket and is fixedly connected with the feeding screw rod in a transmission way; the gearbox is fixedly arranged on the rear end fixing plate, and a shaft hole of the power output wheel and a positioning hole at the rear end of the cutter bar are coaxially matched; the transmission motor is fixedly arranged on the gearbox and is arranged in transmission fit with a power input wheel of the gearbox; the feeding top plate is installed on the feeding screw rod in a transmission fit mode through a screw rod fit installation hole, and the cutter bar installation hole and a cutter bar front end positioning hole of the front end fixing plate are coaxially arranged in a fit mode; the cutter bar is sequentially matched on the cutter bar mounting hole, the cutter bar front end positioning hole, the hole to be processed, the cutter bar rear end positioning hole and the shaft hole of the power output wheel from front to back and can axially move along the cutter bar front end positioning hole, the hole to be processed, the cutter bar rear end positioning hole and the shaft hole of the power output wheel, wherein the cutter bar and the cutter bar mounting hole are axially positioned and matched, the cutter bar front end positioning hole and the cutter bar rear end positioning hole are in clearance fit, the cutter bar and the hole to be processed are coaxially arranged, and the cutter bar and the power output wheel are in key connection, transmission and matched; and a cutter is fixedly arranged on the cutter bar and is arranged at a position between the positioning hole at the front end of the cutter bar and the positioning hole at the rear end of the cutter bar.
The front end positioning shaft and the cutter bar front end positioning hole on the front end fixing plate comprise two front end positioning shafts and a cutter bar front end positioning hole, the circle center positions of the front end positioning shafts and the cutter bar front end positioning hole are correspondingly arranged according to the circle center positions of three adjacent holes on the annular workpiece, the cutter bar front end positioning hole corresponds to the hole in the middle position, and the two front end positioning shafts correspond to the holes on the two sides.
And the motor mounting bracket on the front end fixing plate is fixedly mounted on one side of the back of the lead screw mounting hole.
The cutter bar front end positioning hole is fixedly provided with a cutter bar front end positioning shaft sleeve and is in clearance fit installation with the cutter bar through the cutter bar front end positioning shaft sleeve.
The rear end positioning shaft and the cutter bar rear end positioning hole on the rear end fixing plate comprise two rear end positioning shafts and a cutter bar rear end positioning hole, the circle center positions of the rear end positioning shafts and the cutter bar rear end positioning hole are correspondingly arranged according to the circle center positions of three adjacent holes on the annular workpiece, the cutter bar rear end positioning hole corresponds to the hole in the middle, and the two front end positioning shafts correspond to the holes on the two sides.
The cutter bar rear end locating hole is provided with a ball bearing and a sealing cover, the ball bearing is installed in the cutter bar rear end locating hole in a matched mode, the cutter bar rear end locating hole is installed in a clearance fit mode through the ball bearing and the cutter bar, and the cutter bar rear end locating hole is used for axially locating the ball bearing through the sealing cover.
Shaft holes are respectively formed in the box body of the gearbox along the two axial sides of the power output wheel, a positioning shaft sleeve is fixedly installed on the shaft holes, and the positioning shaft sleeve and the cutter bar 7 which is fed in the axial direction are installed in a clearance fit mode.
The diameter of the cutter rod is smaller than that of a hole to be machined in the annular workpiece.
The cutter bar is provided with a cutter mounting hole and a key groove, the cutter mounting hole is arranged at a position between a positioning hole at the front end of the cutter bar and a positioning hole at the rear end of the cutter bar, the key groove is arranged along the rear half part of the cutter bar, the cutter bar is fixedly provided with a cutter through the cutter mounting hole, and the cutter bar is in key connection transmission fit with a shaft hole key of the power output wheel through the key groove.
The utility model has the advantages that: the annular workpiece is provided with the connecting hole, so that the cutter bar and the hole to be machined can be positioned accurately and quickly, the machining feeding operation is controlled by a mechanical transmission structure, and the machining precision is high and the machining efficiency is high; the maintenance cost and the rejection rate of the workpiece are reduced, and the production cost is saved.
Drawings
FIG. 1 is a schematic view of the overall tool structure of the present invention;
FIG. 2 is a schematic structural view of the front end fixing plate positioning tool of the present invention;
FIG. 3 is a schematic structural view of the rear end fixing plate positioning tool of the present invention;
in the drawings: the cutter-bar-type machining device comprises a front end fixing plate 1, a front end positioning shaft 11, a cutter-bar front end positioning hole 12, a cutter-bar front end positioning shaft sleeve 121, a screw rod mounting hole 13, a motor mounting support 14, a feeding motor 2, a feeding screw rod 3, a rear end fixing plate 4, a rear end positioning shaft 41, a cutter-bar rear end positioning hole 42, a ball bearing 421, a sealing cover 422, a transmission motor 5, a gearbox 6, a power input wheel 61, a power output wheel 62, a cutter bar 7, a cutter mounting hole 71, a key groove 72, a cutter 73, a feeding top plate 8, a screw rod matching mounting hole 81, a cutter-bar mounting hole 82, an annular workpiece 9, a hole to be machined 91 and a.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail with reference to the embodiments.
The large-scale annular workpiece boring device of the present invention, as shown in fig. 1-3, comprises a front end fixing plate 1, a feeding motor 2, a feeding screw 3, a rear end fixing plate 4, a transmission motor 5, a gear box 6, a cutter bar 7, a feeding top plate 8 and an annular workpiece 9; the front end fixing plate 1 is provided with a front end positioning shaft 11, a cutter bar front end positioning hole 12, a lead screw mounting hole 13 and a motor mounting bracket 14; the rear end fixing plate 4 is provided with a rear end positioning shaft 41 and a cutter bar rear end positioning hole 42; the gearbox 6 is provided with a power input wheel 61 and a power output wheel 62; a screw rod matching installation hole 81 and a cutter bar installation hole 82 are formed in the feeding top plate 8; mounting and connecting holes are uniformly distributed on the annular workpiece 9, wherein the mounting and connecting holes comprise a hole 91 to be processed and positioning holes 92 adjacent to two sides of the hole 91 to be processed; the front end fixing plate 1 is fixedly arranged on a positioning hole 92 on the front end surface of the annular workpiece 9 through a front end positioning shaft 11, and a cutter bar front end positioning hole 12 and a hole 91 to be processed on the front end surface of the annular workpiece 9 are coaxially matched; the rear end fixing plate 4 is fixedly arranged on a positioning hole 92 on the rear end face of the annular workpiece 9 through a rear end positioning shaft 41, and the cutter bar rear end positioning hole 42 and a hole 91 to be processed on the rear end face of the annular workpiece 9 are coaxially matched; the feeding screw 3 is vertically arranged and installed on the front end fixing plate 1 through a screw installing hole 13; the feeding motor 2 is fixedly arranged on the front end fixing plate 1 through a motor mounting bracket 14 and is fixedly connected with the feeding screw rod 3 in a transmission way; the gearbox 6 is fixedly arranged on the rear end fixing plate 4, and the shaft hole of the power output wheel 62 and the cutter bar rear end positioning hole 42 are coaxially matched; the transmission motor 5 is fixedly arranged on the gearbox 6 and is arranged in transmission fit with the power input wheel 61 of the gearbox 6; the feeding top plate 8 is installed on the feeding screw rod 3 in a transmission fit mode through a screw rod fit installation hole 81, and the cutter bar installation hole 82 is coaxially arranged in a fit mode with the cutter bar front end positioning hole 12 of the front end fixing plate 1; the cutter bar 7 is sequentially matched on the cutter bar mounting hole 82, the cutter bar front end positioning hole 12, the hole to be processed 91, the cutter bar rear end positioning hole 42 and the shaft hole of the power output wheel 62 from front to back and can axially move along the cutter bar front end positioning hole 12, the hole to be processed 91, the cutter bar rear end positioning hole 42 and the shaft hole of the power output wheel 62, wherein the cutter bar 7 is axially positioned and matched with the cutter bar mounting hole 82, the cutter bar 7 is arranged in clearance fit with the cutter bar front end positioning hole 12 and the cutter bar rear end positioning hole 42, the cutter bar 7 and the hole to be processed 91 are coaxially arranged, and the cutter bar 7 is in key connection, transmission and matching with the power output wheel 62; the cutter bar 7 is fixedly provided with a cutter 73, and the cutter 73 is arranged at a position between the cutter bar front end positioning hole 12 and the cutter bar rear end positioning hole 42.
The front end positioning shaft 11 and the cutter bar front end positioning hole 12 on the front end fixing plate 1 comprise two front end positioning shafts 11 and a cutter bar front end positioning hole 12, the circle center positions of the front end positioning shafts 11 and the cutter bar front end positioning hole 12 are correspondingly arranged according to the circle center positions of three adjacent holes on the annular workpiece 9, the cutter bar front end positioning hole 12 corresponds to a hole in the middle, and the two front end positioning shafts 11 correspond to holes on two sides.
And the motor mounting bracket 14 on the front end fixing plate 1 is fixedly mounted on one side of the back of the screw rod mounting hole 13.
A cutter bar front end positioning shaft sleeve 121 is fixedly arranged on the cutter bar front end positioning hole 12, and the cutter bar front end positioning hole 12 is installed in a clearance fit mode with the cutter bar 7 through the cutter bar front end positioning shaft sleeve 121.
The rear end positioning shaft 41 and the cutter bar rear end positioning hole 42 on the rear end fixing plate 4 comprise two rear end positioning shafts 41 and a cutter bar rear end positioning hole 42, the circle center positions of the rear end positioning shaft 41 and the cutter bar rear end positioning hole 42 are correspondingly arranged according to the circle center positions of three adjacent holes on the annular workpiece 9, the cutter bar rear end positioning hole 42 corresponds to a hole in the middle, and the two front end positioning shafts 11 correspond to holes on two sides.
The cutter bar rear end positioning hole 42 is provided with a ball bearing 421 and a sealing cover 422, the ball bearing 421 is installed in the cutter bar rear end positioning hole 42 in a matching mode, the cutter bar rear end positioning hole 42 is installed in a clearance fit mode with the cutter bar 7 through the ball bearing 421, and the cutter bar rear end positioning hole 42 axially positions the ball bearing 421 through the sealing cover 422.
Shaft holes are respectively formed in the box body of the gearbox 6 along the two axial sides of the power output wheel 62, a positioning shaft sleeve is fixedly arranged on each shaft hole, and the positioning shaft sleeve and the cutter bar 7 which is fed in the axial direction are installed in a clearance fit mode.
The diameter of the cutter bar 7 is smaller than that of the hole 91 to be processed on the annular workpiece 9.
Be provided with cutter mounting hole 71 and keyway 72 on the cutter arbor 7, cutter mounting hole 71 sets up the position that is located between cutter arbor front end locating hole 12 and the cutter arbor rear end locating hole 42, and keyway 72 sets up along cutter arbor 7 latter half section position, and cutter arbor 7 passes through cutter mounting hole 71 fixed mounting cutter 73, and cutter arbor 7 passes through keyway 72 and power take-off wheel 62's shaft hole key-type connection transmission cooperation.
Example (b):
with reference to the attached drawings 1-3, the utility model discloses frock process and the theory of operation of large-scale cyclic annular work piece bore hole device:
1) the front end fixing plate 1 and the rear end fixing plate 4 are respectively installed on the front end surface and the rear end surface of the annular workpiece 9 shown in the attached drawings 2 and 3, so that the cutter bar front end positioning hole 12, the hole to be processed 91 and the cutter bar rear end positioning hole 42 are coaxially installed in a matching manner. The hole 91 to be processed of the annular workpiece 9 is an installation connection hole or a positioning hole which needs to be reamed as described in the background art.
2) A feed motor 2 and a feed screw 3 are mounted on the front end fixing plate 1, and a feed top plate 8 is mounted on the feed screw 3.
3) A cutter 73 is fixedly arranged on the cutter bar 7, the cutter bar 7 is arranged in the cutter bar rear end positioning hole 42 of the rear end fixing plate 4 along the front end and penetrates out of the cutter bar front end positioning hole 12, and the end part of the cutter bar 7 is axially positioned and matched with the cutter bar mounting hole 82 of the feeding top plate 8; the aperture of cutter arbor rear end locating hole 42 and cutter arbor front end locating hole 12 is far greater than waiting to process the hole 91 diameter, the purpose is exactly when installing cutter arbor 7, can install the cutter cooperation, the axial positioning of cutter arbor 7 and cutter arbor rear end locating hole 42 and cutter arbor front end locating hole 12 sets up through other accessory installations and reaches clearance fit, cutter arbor front end locating hole 12 passes through cutter arbor front end location axle sleeve 121 assembly, cutter arbor rear end locating hole 42 passes through ball bearing 421 cooperation setting.
4) The power output wheel 62 of the gearbox 6 is arranged from the tail part of the cutter bar 7, the cutter bar 7 and the power output wheel 62 are in key connection, transmission and matching installation, the gearbox 6 is fixedly installed on the rear end fixing plate 4, and the transmission motor 5 is fixedly installed on the gearbox 6 and is matched with the power input wheel 61.
5) The position of the tool bar 7 is adjusted so that the position of the tool 73 is located at the end surface portion on the side of the hole 91 to be machined of the annular workpiece 9, and the axial stroke of the tool bar 7 is arranged in the depth of the hole 91 to be machined of the annular workpiece 9 so that the tool 73 can be fed from one end to the other end of the hole 91 to be machined in the axial direction.
6) The length of the cutter 73 is set according to the thickness of the hole 91 to be machined, which needs to be bored, or the machining requirement is met by multiple times of turning according to the machining amount of single turning.
7) The transmission motor 5 is started, the cutter bar 7 is driven to rotate through the gearbox 6 to start boring operation, the feeding motor 2 is used for setting the feeding speed of the feeding top plate 8, the feeding screw 3 is used for driving the feeding top plate 8 to move axially, so that the cutter bar 7 is pulled to axially feed and turn along the hole 91 to be machined, the hole 91 to be machined is fed to the rear end from the rear end of the hole 91 to be machined, and boring repairing operation of the hole 91 to be machined is completed.
Claims (9)
1. The utility model provides a large-scale cyclic annular work piece bore hole device which characterized in that: comprises a front end fixing plate (1), a feeding motor (2), a feeding screw (3), a rear end fixing plate (4), a transmission motor (5), a gearbox (6), a cutter bar (7), a feeding top plate (8) and an annular workpiece (9); a front end positioning shaft (11), a cutter bar front end positioning hole (12), a lead screw mounting hole (13) and a motor mounting bracket (14) are arranged on the front end fixing plate (1); a rear end positioning shaft (41) and a cutter bar rear end positioning hole (42) are arranged on the rear end fixing plate (4); the gearbox (6) is provided with a power input wheel (61) and a power output wheel (62); a screw rod matching installation hole (81) and a cutter bar installation hole (82) are formed in the feeding top plate (8); mounting and connecting holes are uniformly distributed on the annular workpiece (9), wherein the mounting and connecting holes comprise a hole (91) to be machined and positioning holes (92) adjacent to two sides of the hole (91) to be machined; the front end fixing plate (1) is fixedly arranged on a positioning hole (92) of the front end surface of the annular workpiece (9) through a front end positioning shaft (11), and a cutter bar front end positioning hole (12) is coaxially matched with a hole (91) to be machined of the front end surface of the annular workpiece (9); the rear end fixing plate (4) is fixedly arranged on a positioning hole (92) in the rear end face of the annular workpiece (9) through a rear end positioning shaft (41), and the cutter bar rear end positioning hole (42) is coaxially matched with a hole (91) to be machined in the rear end face of the annular workpiece (9); the feeding screw rod (3) is vertically arranged and installed on the front end fixing plate (1) through a screw rod installation hole (13); the feeding motor (2) is fixedly arranged on the front end fixing plate (1) through a motor mounting bracket (14) and is fixedly connected with the feeding screw rod (3) in a transmission way; the gearbox (6) is fixedly arranged on the rear end fixing plate (4), and the shaft hole of the power output wheel (62) and the cutter bar rear end positioning hole (42) are coaxially matched; the transmission motor (5) is fixedly arranged on the gearbox (6) and is arranged in transmission fit with a power input wheel (61) of the gearbox (6); the feeding top plate (8) is installed on the feeding screw rod (3) in a transmission fit mode through a screw rod fit installation hole (81), and the cutter bar installation hole (82) and the cutter bar front end positioning hole (12) of the front end fixing plate (1) are coaxially arranged in a fit mode; the cutter bar (7) is sequentially matched on the cutter bar mounting hole (82), the cutter bar front end positioning hole (12), the hole to be processed (91), the cutter bar rear end positioning hole (42) and the shaft hole of the power output wheel (62) from front to back, and can axially move along the shaft holes of the cutter bar front end positioning hole (12), the hole to be processed (91), the cutter bar rear end positioning hole (42) and the power output wheel (62), wherein the cutter bar (7) is axially positioned and matched with the cutter bar mounting hole (82), the cutter bar (7) is arranged in clearance fit with the cutter bar front end positioning hole (12) and the cutter bar rear end positioning hole (42), the cutter bar (7) and the hole to be processed (91) are coaxially arranged, and the cutter bar (7) and the power output wheel (62) are in key connection, transmission and matched with each other; and a cutter (73) is fixedly mounted on the cutter bar (7), and the cutter (73) is positioned between the cutter bar front end positioning hole (12) and the cutter bar rear end positioning hole (42).
2. A large-sized annular workpiece boring device according to claim 1, wherein: the front end positioning shaft (11) and the cutter bar front end positioning hole (12) on the front end fixing plate (1) comprise two front end positioning shafts (11) and a cutter bar front end positioning hole (12), the circle center positions of the front end positioning shafts (11) and the cutter bar front end positioning hole (12) are correspondingly arranged according to the circle center positions of three adjacent holes in the annular workpiece (9), the cutter bar front end positioning hole (12) corresponds to the hole in the middle, and the two front end positioning shafts (11) correspond to the holes in the two sides.
3. A large-sized annular workpiece boring device according to claim 1, wherein: and a motor mounting bracket (14) on the front end fixing plate (1) is fixedly mounted at the back of the screw rod mounting hole (13).
4. A large-sized annular workpiece boring device according to claim 1, wherein: the cutter bar front end positioning hole (12) is fixedly provided with a cutter bar front end positioning shaft sleeve (121), and the cutter bar front end positioning hole (12) is installed in a clearance fit mode with the cutter bar (7) through the cutter bar front end positioning shaft sleeve (121).
5. A large-sized annular workpiece boring device according to claim 1, wherein: the rear end positioning shaft (41) and the cutter bar rear end positioning hole (42) on the rear end fixing plate (4) comprise two rear end positioning shafts (41) and a cutter bar rear end positioning hole (42), the circle center positions of the rear end positioning shafts (41) and the cutter bar rear end positioning hole (42) are correspondingly arranged according to the circle center positions of three adjacent holes on the annular workpiece (9), the cutter bar rear end positioning hole (42) corresponds to the hole in the middle, and the two front end positioning shafts (11) correspond to the holes on the two sides.
6. A large-sized annular workpiece boring device according to claim 1, wherein: the cutter bar rear end positioning hole (42) is provided with a ball bearing (421) and a sealing cover (422), the ball bearing (421) is installed in the cutter bar rear end positioning hole (42) in a matched mode, the cutter bar rear end positioning hole (42) is installed in a clearance fit mode with the cutter bar (7) through the ball bearing (421), and the cutter bar rear end positioning hole (42) axially positions the ball bearing (421) through the sealing cover (422).
7. A large-sized annular workpiece boring device according to claim 1, wherein: shaft holes are respectively formed in the two axial sides of the power output wheel (62) on the box body of the gearbox (6), a positioning shaft sleeve is fixedly installed on the shaft holes, and the positioning shaft sleeve and the cutter bar (7) which feeds along the axial direction are installed in a clearance fit mode.
8. A large-sized annular workpiece boring device according to claim 1, wherein: the diameter of the cutter bar (7) is smaller than that of a hole (91) to be machined in the annular workpiece (9).
9. A large-sized annular workpiece boring device according to claim 1, wherein: be provided with cutter mounting hole (71) and keyway (72) on cutter arbor (7), cutter mounting hole (71) set up the position that is located between cutter arbor front end locating hole (12) and cutter arbor rear end locating hole (42), keyway (72) set up along cutter arbor (7) latter half section position, cutter arbor (7) are through cutter mounting hole (71) fixed mounting cutter (73), cutter arbor (7) are through keyway (72) and the shaft hole key-type transmission cooperation of power take-off wheel (62).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022382973.XU CN213496649U (en) | 2020-10-23 | 2020-10-23 | Large-scale annular workpiece boring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022382973.XU CN213496649U (en) | 2020-10-23 | 2020-10-23 | Large-scale annular workpiece boring device |
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| CN213496649U true CN213496649U (en) | 2021-06-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114160833A (en) * | 2021-11-22 | 2022-03-11 | 江阴市南方不锈钢管有限公司 | Precise and rapid repairing device for main shaft hole of steel tube rolling mill |
-
2020
- 2020-10-23 CN CN202022382973.XU patent/CN213496649U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114160833A (en) * | 2021-11-22 | 2022-03-11 | 江阴市南方不锈钢管有限公司 | Precise and rapid repairing device for main shaft hole of steel tube rolling mill |
| CN114160833B (en) * | 2021-11-22 | 2023-11-17 | 江阴市南方不锈钢管有限公司 | Accurate and quick repairing device for main shaft hole of steel pipe rolling mill |
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