CN108747432B - Double-axial, two-station and self-centering boring machine and application thereof - Google Patents
Double-axial, two-station and self-centering boring machine and application thereof Download PDFInfo
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- CN108747432B CN108747432B CN201811009534.5A CN201811009534A CN108747432B CN 108747432 B CN108747432 B CN 108747432B CN 201811009534 A CN201811009534 A CN 201811009534A CN 108747432 B CN108747432 B CN 108747432B
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- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 238000003754 machining Methods 0.000 claims abstract description 23
- 238000005553 drilling Methods 0.000 claims abstract description 17
- 238000003801 milling Methods 0.000 claims abstract description 17
- 238000007667 floating Methods 0.000 claims description 22
- 230000002457 bidirectional effect Effects 0.000 claims description 20
- 230000009471 action Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 4
- 230000003111 delayed effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000007514 turning Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000017105 transposition Effects 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, 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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/25—Movable or adjustable work or tool supports
- B23Q1/26—Movable 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
- B23Q1/30—Movable 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 controlled in conjunction with the feed mechanism
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jigs For Machine Tools (AREA)
Abstract
The invention discloses a double-axial, two-station and automatic centering boring machine and application thereof, comprising a machine body, an axial feeding mechanism and a radial feeding mechanism; drilling and milling power heads are respectively arranged at two ends of the lathe bed; the two ends of the lathe bed are respectively provided with an axial feeding mechanism for realizing the simultaneous feeding of drilling and milling power heads at the two ends and finishing the simultaneous processing of the two ends of the workpiece; the radial feeding mechanism is arranged in the middle of the lathe bed in a manner of being perpendicular to the axial feeding mechanism; at least two self-centering clamps are arranged in the radial feeding mechanism, one of the self-centering clamps is used for machining, the rest is used for clamping a workpiece, and the plurality of self-centering clamps are moved in position through a servo feeding mechanism in the radial feeding mechanism so as to prepare for the next machining, unloading and clamping. According to the invention, the clamping standard during workpiece processing is changed, the V-shaped opening is used for directly clamping the standard applied during installation, so that the processing standard and the installation standard are the same standard, and the processing quality is improved; the clamping device is provided with a plurality of clamping stations, so that clamping and machining are not delayed.
Description
Technical Field
The invention belongs to the technical field of numerical control, and relates to automation equipment for applying a numerical control technology in the field of finish machining.
Background
At present, the processing mode for bearing chambers at two ends of a tricycle hub is to directly clamp the largest outer circle of the hub by using a large-caliber chuck, and to process the largest outer circle by using a lathe and a long rod turning tool. The processing mode has three problems, namely, on one hand, the cutter bar is longer, the vibration is larger during processing, the cutter-yielding phenomenon is serious, and the quality after processing is greatly reduced. Another problem is the datum problem of the clamping. The application standard is an internal inclined plane when the tricycle hub is installed, the standard for processing and installing is inconsistent, and the processed workpiece standard is not concentric with the bearing, so that the problem of swing of the tricycle hub during movement is caused. Thirdly, the accuracy (runout) of the chuck directly affects the workpiece machining accuracy.
Disclosure of Invention
The invention aims to provide a boring machine with double axial directions, two stations and automatic centering, which solves the problems in the prior art.
In order to solve the problems, the invention adopts the following scheme:
a bi-axial, two-station, self-centering boring machine comprising:
the two ends of the lathe bed are respectively provided with a drilling and milling power head;
the axial feeding mechanism is respectively arranged at two ends of the lathe bed and is used for realizing simultaneous feeding of drilling and milling power heads at two ends and finishing simultaneous processing of two ends of a workpiece;
the radial feeding mechanism is arranged in the middle of the lathe bed in a manner of being perpendicular to the axial feeding mechanism;
the radial feeding mechanism is provided with at least two self-centering clamps, one of the self-centering clamps is used for machining, the rest is used for clamping a workpiece, and the servo feeding mechanism in the radial feeding mechanism is used for realizing the position movement of a plurality of self-centering clamps so as to prepare for the next machining, unloading and clamping.
Further, the self-centering fixture includes:
the left half clamp is connected to the bottom plate II in a sliding manner;
the right half clamp is connected to the bottom plate II in a sliding manner;
the left side of the bidirectional clamping device is connected with the left half clamp, and the right side of the bidirectional clamping device is connected with the right half clamp;
the pushing device is arranged on a bottom plate II positioned at the left half clamp or the right half clamp, pushes the left half clamp or the right half clamp to move on the bottom plate II, and achieves opposite movement or back movement between the left half clamp and the right half clamp under the action of the bidirectional clamping device so as to clamp or release a workpiece.
Further, the propelling device comprises a clamping cylinder, a cylinder bracket and a connecting plate; the cylinder support is fixed on the bottom plate II, the clamping cylinder is installed on the cylinder support, and the telescopic rod of the clamping cylinder is connected with the left half clamp or the right half clamp through the connecting plate.
Further, the bidirectional clamping device includes:
one end of the upper rack is connected with the left half clamp, and the bottom surface of the other end of the upper rack is provided with saw teeth;
one end of the lower rack is connected with the right half clamp, and the top surface of the other end of the lower rack is provided with saw teeth;
the two supporting seats are correspondingly arranged on the bottom plate II;
the gear is rotatably supported between the two supporting seats through a gear shaft, and the upper rack and the lower rack are respectively meshed with the gear.
Further, the right half clamp includes:
the V-shaped opening movable clamping slide plate is connected to the bottom plate II in a sliding manner;
the V-shaped opening fixing block is arranged on the V-shaped opening movable clamping sliding plate;
the V-shaped opening is fixed, and a notch of the V-shaped opening faces to the left half clamp and is arranged on the V-shaped opening fixing block;
the left half clamp includes:
the floating V-shaped port clamping slide plate is connected to the bottom plate II in a sliding manner;
a floating V-shaped port fixing block which is arranged on the floating V-shaped port clamping sliding plate;
the vertical plate is arranged on the floating V-shaped opening fixing block;
the notch of the movable V-shaped opening is hinged on the vertical plate in a way of facing the right half clamp; during clamping, the workpiece can take the fixed V-shaped opening as a reference, and the movable V-shaped opening is floated, so that clamping is realized.
Further, two long side edges opposite to the top surface of the bottom plate II are respectively provided with a linear guide rail II which is parallel to each other, and each linear guide rail II is provided with a plurality of sliding blocks II; the V-shaped opening movable clamping slide plate is arranged on a slide block II on the right side, and the floating V-shaped opening clamping slide plate is arranged on a slide block II on the left side.
Further, the servo feed mechanism includes:
the bottom plate I is arranged in the middle of the lathe bed, linear guide rails I which are parallel to each other are respectively arranged at the edges of two long sides opposite to the top surface of the bottom plate I, and a plurality of sliding blocks I are arranged on each linear guide rail I;
the servo motor I is arranged at one end of the bottom plate I through a motor fixing seat I;
one end of the ball screw I is rotatably supported on a screw rear bracket I positioned on the bottom plate I, and the other end of the ball screw I is rotatably supported on a screw bracket I positioned on the bottom plate I and is connected with the servo motor I through a coupler I;
and the screw nut seat I is arranged in the ball screw I, and two symmetrically arranged self-centering clamps are arranged on the sliding block I and the screw nut seat I.
Further, the axial feed mechanism includes: the servo motor II is arranged at one end of the lathe bed through a motor fixing seat II;
one end of the ball screw II is rotatably supported on a screw rear bracket II positioned on the lathe bed, and the other end of the ball screw II is rotatably supported on a screw bracket II positioned on the lathe bed and is connected with the servo motor II through a coupler II;
the linear guide rails III are respectively arranged at the top surfaces of two long sides corresponding to the lathe bed, and each linear guide rail III is provided with a plurality of sliding blocks III;
the screw nut seat II is arranged in the ball screw II, the power bracket is arranged on the screw nut seat II and the sliding block III, and the drilling and milling power head is arranged on the power bracket.
The application of the double-axial, two-station and self-centering boring machine comprises the following steps:
firstly, respectively placing two hubs in a 1# self-centering clamp and a 2# self-centering clamp, driving a two-way clamping device to move in opposite directions through respective clamping cylinders to clamp the hubs, wherein when in clamping, a workpiece takes a fixed V-shaped port as a reference, and a movable V-shaped port is floated to realize clamping;
secondly, starting a servo motor II at two ends of the lathe bed to enable drilling and milling power heads at two ends to feed simultaneously, and finishing simultaneous machining of two ends of a hub in the 1# self-centering clamp;
starting a servo motor I to enable the 1# self-centering clamp and the 2# self-centering clamp to radially move, and finishing accurate exchange of two hubs, so that the hub in the 2# self-centering clamp is subjected to;
and fourthly, starting a clamping cylinder at the 1# self-centering clamp to drive the bidirectional clamping device to move back to release the hub, placing the next hub to be processed in the 1# self-centering clamp, and starting the clamping cylinder at the 1# self-centering clamp again to drive the bidirectional clamping device to move back to realize clamping of the hub, so as to prepare for the next processing.
The invention has the beneficial effects that:
according to the invention, on one hand, the clamping standard in workpiece processing is changed, and the standard applied in the process of directly clamping and installing the workpiece is used for directly clamping the workpiece by using the V-shaped opening, so that the processing standard and the installing standard are the same standard, and the processing quality is improved; on the other hand, the workpiece does not rotate, the cutter is rotated, and a forming cutter is applied, namely, bearing chambers at two ends are simultaneously machined, and a turning hole is changed into a boring hole, so that the vibration and cutter-back phenomenon caused by the length of a cutter bar is solved, the production efficiency is greatly improved, the machining precision is improved, the former machining time is accumulated with the loading and unloading time, the current time is overlapped, and the machining efficiency is doubled compared with the former machining efficiency; the equipment is provided with two stations, namely a processing station and a clamping/unloading station, so that clamping and processing are not delayed.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a radial feed mechanism of the present invention;
FIG. 3 is a schematic view of the self-centering fixture of the present invention;
FIG. 4 is a schematic view of a servo feed mechanism according to the present invention;
FIG. 5 is a schematic view of a bidirectional clamping device according to the present invention;
FIG. 6 is a schematic view of an axial feed mechanism of the present invention;
wherein, 1, an axial feeding mechanism; 2. a bed body; 3. drilling and milling power head; 4. a radial feed mechanism; 5. a power head bracket; 1-1, a servo motor II; 1-2, a motor fixing seat II; 1-3, a ball screw II; 1-4, a screw rear bracket II; 1-5 parts of a screw rod bracket II; 1-6, a coupler II; 1-7, a linear guide rail III; 1-8, a sliding block III; 1-9, a screw nut seat II; 4-1, a servo feeding mechanism; 4-2, 1# self-centering clamp; 4-3, 2# self-centering clamp; 4-4, a bottom plate I; 4-11, a servo motor I; 4-12, a coupler I; 4-13, a screw bracket I; 4-14, a motor fixing seat I; 4-15 parts of ball screw I; 4-16, a screw nut seat I; 4-17, a linear guide rail I; 4-18, a sliding block I; 4-19 screw rear brackets I; 4-21, pin shafts; 4-22, vertical plates; 4-23, a movable V-shaped port; 4-24, upper racks; 4-25, gears; 4-26, fixing a V-shaped port; 4-27, clamping air cylinders; 4-28, a cylinder bracket; 4-29, connecting plates; 4-30, V-shaped opening fixing blocks; 4-31, sliding block II; 4-32, moving a clamping slide plate by a V-shaped opening; 4-33, lower racks; 4-34, gear shaft; 4-35 parts of a supporting seat; 4-36 floating V-shaped opening clamping sliding plates; 4-37, a linear guide rail II; 4-38, floating V-shaped port fixing blocks; 4-39 parts of a bottom plate II.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention become more apparent, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of the invention. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention. 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. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in fig. 1, a double-axial, two-station and self-centering boring machine comprises a machine body 2, an axial feeding mechanism 1 and a radial feeding mechanism 4; drilling and milling power heads 3 are respectively arranged at two ends of the lathe bed 2; two ends of the lathe bed 2 are respectively provided with an axial feeding mechanism 1 for realizing the simultaneous feeding of drilling and milling power heads 3 at two ends and finishing the simultaneous processing of two ends of a workpiece; the radial feeding mechanism 4 is arranged in the middle of the lathe bed 2 in a manner of being perpendicular to the axial feeding mechanism 1; at least two self-centering clamps are arranged in the radial feeding mechanism 4, one of the self-centering clamps is used for machining, the rest is used for clamping a workpiece, and the plurality of self-centering clamps are moved in position through the servo feeding mechanism 4-1 in the radial feeding mechanism so as to prepare for the next machining, unloading and clamping.
In the above embodiment, it is preferable that the radial feed mechanism 4 has two self-centering jigs disposed symmetrically, one for machining and the other for clamping the workpiece.
With continued reference to FIG. 1 and as shown in FIG. 6, the axial feed mechanism includes a servo motor II 1-1, a ball screw II 1-3, a linear guide III 1-7, and a screw nut seat II 1-9; the servo motor II 1-1 is arranged at one end of the lathe bed 2 through a motor fixing seat II 1-2; one end of the ball screw II 1-3 is rotatably supported on a screw rear support II 1-4 positioned on the lathe bed 2, and the other end of the ball screw II is rotatably supported on a screw support II 1-5 positioned on the lathe bed 2 and is connected with a servo motor II 1-1 through a coupler II 1-6; a linear guide rail III 1-7 is respectively arranged on the top surfaces of two long sides corresponding to the lathe bed 2, and each linear guide rail III 1-7 is provided with a plurality of sliding blocks III 1-8; the screw nut seat II 1-9 is arranged in the ball screw II 1-3, the power bracket 5 is arranged on the screw nut seat II 1-9 and the sliding block III 1-8, and the drilling and milling power head 3 is arranged on the power bracket 5.
In the above embodiment, the motor in the drilling and milling power head 3 is a variable frequency motor, and the rotation speed is adjustable. The section of the linear guide rail III 1-7 can be I-shaped or T-shaped, and a T-shaped groove is formed in the bottom surface of the sliding block III 1-8.
Therefore, when the workpiece processing machine works, the radial feeding mechanism 4 drives the workpiece to a processing station, and the drilling and milling power heads 3 at the two ends finish simultaneous feeding under the action of the axial feeding mechanism 1, so that the simultaneous processing of the two ends of the workpiece is realized.
As shown in fig. 2, the radial feeding mechanism structure 2 comprises a plurality of self-centering clamps and a servo feeding mechanism 4-1, and the servo feeding mechanism 4-1 is used for realizing the position movement of the plurality of self-centering clamps so as to prepare for the next processing, unloading and clamping.
As shown in fig. 3, the self-centering fixture comprises a left half fixture, a right half fixture, a bidirectional clamping device and a pushing device; the left half clamp is connected to the bottom plate II 4-39 in a sliding way; the right half clamp is connected to the bottom plate II 4-39 in a sliding way; the left side of the bidirectional clamping device is connected with the left half clamp, and the right side of the bidirectional clamping device is connected with the right half clamp; the pushing device is arranged on a bottom plate II 4-39 positioned at the left half clamp or the right half clamp, the pushing device pushes the left half clamp or the right half clamp to move on the bottom plate II 4-39, and the opposite movement or the back movement between the left half clamp and the right half clamp is realized under the action of the bidirectional clamping device so as to clamp or release a workpiece.
With continued reference to FIG. 3, the right half clamp includes a V-port moving clamp slide 4-32, a V-port securing block 4-30 and a securing V-port 4-26; the V-shaped opening movable clamping slide plate 4-32 is connected to the bottom plate II 4-39 in a sliding way; the V-shaped opening fixing block 4-30 is arranged on the V-shaped opening movable clamping slide plate 4-32; the notch for fixing the V-shaped port 4-26 is arranged on the V-shaped port fixing block 4-30 in a way of facing the left half block clamp.
The left half block clamp comprises a floating V-shaped port clamping slide plate 4-36, a floating V-shaped port fixing block 4-38, a vertical plate 4-22 and a movable V-shaped port 4-23; the floating V-shaped port clamping slide plate 4-36 is connected to the bottom plate II 4-39 in a sliding manner; the floating V-shaped port fixing blocks 4-38 are arranged on the floating V-shaped port clamping sliding plates 4-36; the vertical plate 4-22 is arranged on the floating V-shaped opening fixed block 4-38; the notch of the movable V-shaped opening 4-23 is hinged on the vertical plate 4-22 in a way of facing the right half clamp; during clamping, the workpiece can be clamped by taking the fixed V-shaped opening 4-26 as a reference and the movable V-shaped opening 4-23 as a floating.
It should be noted that the vertical plate 4-22 is provided with a groove, and one side of the movable V-shaped opening 4-23 is inserted into the groove and connected with the vertical plate 4-22 through the pin shaft 4-21, so as to realize the floating effect.
The following is a specific example of sliding the left and right clamp halves on the bottom plate ii:
with continued reference to FIG. 3, the edges of the two opposite long sides of the top surface of the bottom plate II 4-39 are respectively provided with a linear guide rail II 4-37 which is parallel to each other, and each linear guide rail II 4-37 is provided with a plurality of sliding blocks II 4-31; the V-shaped opening movable clamping slide plate 4-32 is arranged on the slide block II 4-31 on the right side, and the floating V-shaped opening clamping slide plate 4-36 is arranged on the slide block II 4-31 on the left side.
It should be noted that the cross section of the linear guide rail II 4-37 can be I-shaped or T-shaped, and the bottom surface of the sliding block II 4-31 is provided with a T-shaped groove.
A preferred embodiment of the propulsion device in the above embodiment is given below.
With continued reference to FIG. 3, the propulsion device includes a clamping cylinder 4-27, a cylinder bracket 4-28, and a connecting plate 4-29; the cylinder bracket 4-28 is fixed on the bottom plate II 4-39, the clamping cylinder 4-27 is arranged on the cylinder bracket 4-28, and the telescopic rod of the clamping cylinder is connected with the left half clamp or the right half clamp through the connecting plate 4-29.
A preferred embodiment of the above embodiment concerning the bidirectional clamping device is given below.
As shown in fig. 5, the bidirectional clamping device comprises an upper rack 4-24, a lower rack 4-33, two supporting seats 4-35 and a gear 4-25; one end of the upper rack 4-24 is connected with the left half clamp, and the bottom surface of the other end is provided with saw teeth; one end of the lower rack 4-33 is connected with the right half clamp, and the top surface of the other end is provided with saw teeth; the two supporting seats 4-35 are correspondingly arranged on the bottom plate II 4-39; the gear 4-25 is rotatably supported between the two supporting seats 4-35 through the gear shaft 4-34, and the upper rack 4-24 and the lower rack 4-33 are respectively meshed with the gear 4-25.
Therefore, when the clamping cylinder 4-27 works, the fixed V-shaped opening 4-26 is pushed to drive the lower rack 4-33, the lower rack 4-33 drives the gear 4-25 to rotate, the rotating gear 4-25 drives the upper rack 4-24 to move, the upper rack 4-24 drives the movable V-shaped opening 4-23, so that the two V-shaped openings are clamped simultaneously, and as the movable V-shaped opening 4-23 has a certain floating amount, a workpiece can float by taking the fixed V-shaped opening 4-26 as a reference during clamping, and the clamping is realized.
As shown in FIG. 4, the servo feed mechanism 4-1 comprises a base plate I4-4, a servo motor I4-11, a ball screw I4-15 and a screw nut seat I4-16; the bottom plate I4-4 is arranged in the middle of the lathe bed 2, two long side edges opposite to the top surface of the bottom plate I4-4 are respectively provided with linear guide rails I4-17 which are parallel to each other, and each linear guide rail I4-17 is provided with a plurality of sliding blocks I4-18; the servo motor I4-11 is arranged at one end of the bottom plate I4-4 through the motor fixing seat I4-14; one end of the ball screw I4-15 is rotatably supported on a screw rear bracket I4-19 positioned on the bottom plate I4-4, and the other end of the ball screw I is rotatably supported on a screw bracket I4-13 positioned on the bottom plate I4-4 and is connected with a servo motor I4-11 through a coupler I4-12; the screw nut seat I4-16 is arranged in the ball screw I4-15, and two symmetrically arranged self-centering clamps are arranged on the sliding block I4-18 and the screw nut seat I4-16. The servo motor I4-11 rotates, and the ball screw I4-15 drives the screw nut seat I4-16 to advance, so that the bottom plate II 4-39 is driven to move, and accurate transposition is realized.
It should be noted that the cross section of the linear guide rail I4-17 can be I-shaped or T-shaped, and the bottom surface of the sliding block I4-18 is provided with a T-shaped groove.
The following gives an application of a preferred embodiment of the boring machine described above, which is as follows:
1. two hubs are respectively placed in a 1# self-centering clamp 4-2 and a 2# self-centering clamp 4-3, a two-way clamping device is driven by respective clamping cylinders 4-27 to move in opposite directions to clamp the hubs, and when in clamping, a workpiece takes a fixed V-shaped port 4-26 as a reference, and a movable V-shaped port 4-23 floats to clamp;
2. starting servo motors II 1-1 at two ends of the lathe bed 2 to enable drilling and milling power heads 3 at two ends to feed simultaneously, and finishing simultaneous machining of two ends of a hub in a 1# self-centering clamp 4-2;
3. starting a servo motor I4-11 to enable the 1# self-centering clamp 4-2 and the 2# self-centering clamp 4-3 to radially move, and finishing accurate exchange of two hubs, so that the hubs in the 2# self-centering clamp 4-3 are subjected to the process;
4. the clamping cylinder 4-27 at the 1# self-centering clamp 4-2 is started to drive the bidirectional clamping device to move back to release the hub, the next hub to be processed is placed in the 1# self-centering clamp 4-2, and the clamping cylinder 4-27 at the 1# self-centering clamp 4-2 is started again to drive the bidirectional clamping device to move back to realize clamping of the hub, so that preparation is made for the next processing.
Therefore, on one hand, the invention changes the clamping standard when the workpiece is processed, and uses the V-shaped opening to directly clamp the standard applied during installation, so that the processing standard and the installation standard are the same standard, and the processing quality is improved; on the other hand, the workpiece does not rotate, the cutter is rotated, and a forming cutter is applied, namely, bearing chambers at two ends are simultaneously machined, and a turning hole is changed into a boring hole, so that the vibration and cutter-back phenomenon caused by the length of a cutter bar is solved, the production efficiency is greatly improved, the machining precision is improved, the former machining time is accumulated with the loading and unloading time, the current time is overlapped, and the machining efficiency is doubled compared with the former machining efficiency; the equipment is provided with two stations, namely a processing station and a clamping/unloading station, so that clamping and processing are not delayed.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (3)
1. A bi-axial, two-station, self-centering boring machine, comprising:
the two ends of the lathe bed (2) are respectively provided with a drilling and milling power head (3);
the axial feeding mechanism (1) is respectively arranged at two ends of the lathe bed (2) and is used for realizing simultaneous feeding of drilling and milling power heads (3) at two ends and finishing simultaneous processing of two ends of a workpiece;
the radial feeding mechanism (4) is arranged in the middle of the lathe bed (2) in a manner of being perpendicular to the axial feeding mechanism (1);
at least two self-centering clamps are arranged in the radial feeding mechanism (4), one of the self-centering clamps is used for machining, the rest is used for clamping a workpiece, and the servo feeding mechanism (4-1) in the radial feeding mechanism is used for realizing the position movement of a plurality of self-centering clamps so as to prepare for the next machining, unloading and clamping;
the self-centering fixture includes:
the left half clamp is connected to the bottom plate II (4-39) in a sliding manner;
the right half clamp is connected to the bottom plate II (4-39) in a sliding manner;
the left side of the bidirectional clamping device is connected with the left half clamp, and the right side of the bidirectional clamping device is connected with the right half clamp;
the pushing device is arranged on a bottom plate II (4-39) at the position of the left half clamp or the right half clamp, pushes the left half clamp or the right half clamp to move on the bottom plate II (4-39), and achieves opposite movement or back movement between the left half clamp and the right half clamp under the action of the bidirectional clamping device so as to clamp or release a workpiece;
the propelling device comprises a clamping cylinder (4-27), a cylinder bracket (4-28) and a connecting plate (4-29);
the cylinder bracket (4-28) is fixed on the bottom plate II (4-39), the clamping cylinder (4-27) is arranged on the cylinder bracket (4-28), and the telescopic rod of the clamping cylinder is connected with the left half clamp or the right half clamp through the connecting plate (4-29);
the bi-directional clamping device includes:
an upper rack (4-24), one end of which is connected with the left half clamp, and the bottom surface of the other end is provided with saw teeth;
a lower rack (4-33), one end of which is connected with the right half clamp, and the top surface of the other end is provided with saw teeth;
two supporting seats (4-35) which are correspondingly arranged on the bottom plate II (4-39);
the gear (4-25) is rotatably supported between the two supporting seats (4-35) through a gear shaft (4-34), and the upper rack (4-24) and the lower rack (4-33) are respectively meshed with the gear (4-25);
the right half clamp includes:
the V-shaped opening moves and clamps the slide plate (4-32), it is connected to the bottom plate II (4-39) slidably;
a V-shaped port fixing block (4-30) mounted on the V-shaped port movable clamping slide plate (4-32);
the V-shaped opening (4-26) is fixed, and a notch of the V-shaped opening is arranged on the V-shaped opening fixing block (4-30) towards the left half block clamp;
the left half clamp includes:
a floating V-shaped opening clamping slide plate (4-36) which is connected on the bottom plate II (4-39) in a sliding way;
a floating V-shaped port fixing block (4-38) mounted on the floating V-shaped port clamping slide plate (4-36);
a vertical plate (4-22) mounted on the floating V-shaped port fixing block (4-38);
the movable V-shaped opening (4-23) is hinged on the vertical plate (4-22) in a way that a notch of the movable V-shaped opening faces to a right half clamp;
when in clamping, the workpiece takes the fixed V-shaped opening (4-26) as a reference, and the movable V-shaped opening (4-23) is floated to realize clamping;
the servo feed mechanism (4-1) includes:
the bottom plate I (4-4) is arranged in the middle of the lathe bed (2), two long side edges opposite to the top surface of the bottom plate I (4-4) are respectively provided with linear guide rails I (4-17) which are parallel to each other, and each linear guide rail I (4-17) is provided with a plurality of sliding blocks I (4-18);
the servo motor I (4-11) is arranged at one end of the bottom plate I (4-4) through a motor fixing seat I (4-14);
one end of the ball screw I (4-15) is rotatably supported on a screw rear bracket I (4-19) positioned on the bottom plate I (4-4), and the other end of the ball screw I is rotatably supported on a screw bracket I (4-13) positioned on the bottom plate I (4-4) and is connected with the servo motor I (4-11) through a coupler I (4-12);
a screw nut seat I (4-16) which is arranged in the ball screw I (4-15), and two symmetrically arranged self-centering clamps are arranged on the sliding block I (4-18) and the screw nut seat I (4-16);
the axial feed mechanism includes: the servo motor II (1-1) is arranged at one end of the lathe bed (2) through the motor fixing seat II (1-2);
one end of the ball screw II (1-3) is rotatably supported on a screw rear bracket II (1-4) positioned on the lathe bed (2), and the other end of the ball screw II is rotatably supported on a screw bracket II (1-5) positioned on the lathe bed (2) and is connected with the servo motor II (1-1) through a coupler II (1-6);
the linear guide rails III (1-7) are respectively arranged at the top surfaces of two corresponding long sides of the lathe bed (2), and each linear guide rail III (1-7) is provided with a plurality of sliding blocks III (1-8);
the screw nut seat II (1-9) is arranged in the ball screw II (1-3), the power head bracket (5) is arranged on the screw nut seat II (1-9) and the sliding block III (1-8), and the drilling and milling power head (3) is arranged on the power head bracket (5).
2. The double-axial, two-station and self-centering boring machine according to claim 1, wherein two long side edges opposite to the top surface of the bottom plate II (4-39) are respectively provided with mutually parallel linear guide rails II (4-37), and each linear guide rail II (4-37) is provided with a plurality of sliding blocks II (4-31);
the V-shaped opening movable clamping slide plate (4-32) is arranged on a slide block II (4-31) on the right side, and the floating V-shaped opening clamping slide plate (4-36) is arranged on a slide block II (4-31) on the left side.
3. Use of a bi-axial, two-station, self-centering boring machine according to claim 1 or 2, characterized in that:
firstly, two hubs are respectively placed in a 1# self-centering clamp (4-2) and a 2# self-centering clamp (4-3), a two-way clamping device is driven by respective clamping cylinders (4-27) to move in opposite directions to clamp the hubs, and when in clamping, a workpiece can float by taking a fixed V-shaped opening (4-26) as a reference and a movable V-shaped opening (4-23) to clamp;
secondly, starting servo motors II (1-1) at two ends of the lathe bed (2) to enable drilling and milling power heads (3) at two ends to feed simultaneously, and finishing simultaneous machining of two ends of a hub in the 1# self-centering clamp (4-2);
starting a servo motor I (4-11) to enable a 1# self-centering clamp (4-2) and a 2# self-centering clamp (4-3) to radially move, and finishing accurate exchange of the two hubs, so that the hubs in the 2# self-centering clamp (4-3) are machined;
fourthly, a clamping cylinder (4-27) at the 1# self-centering clamp (4-2) is started to drive the bidirectional clamping device to move back to release the hub, the next hub to be processed is placed in the 1# self-centering clamp (4-2), and the clamping cylinder (4-27) at the 1# self-centering clamp (4-2) is started again to drive the bidirectional clamping device to move back to clamp the hub, so that preparation is made for the next processing.
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| CN201811009534.5A CN108747432B (en) | 2018-08-31 | 2018-08-31 | Double-axial, two-station and self-centering boring machine and application thereof |
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| CN108747432B true CN108747432B (en) | 2024-03-19 |
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| CN113199251A (en) * | 2021-05-13 | 2021-08-03 | 吉林市薛氏炭素机械设备制造有限责任公司 | Novel roasting electrode double-end-face machining machine tool |
| CN113639977B (en) * | 2021-07-26 | 2024-05-14 | 中信戴卡股份有限公司 | Double-spindle machining center clamp simulation test bed |
| CN115194211B (en) * | 2022-09-15 | 2023-02-03 | 河北力准机械制造有限公司 | Inner hole fine boring machine tool for compressor cylinder body of refrigerating system |
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