CN111659906B - A machine tool for stationary machining of workpieces - Google Patents
A machine tool for stationary machining of workpieces Download PDFInfo
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- CN111659906B CN111659906B CN202010672807.5A CN202010672807A CN111659906B CN 111659906 B CN111659906 B CN 111659906B CN 202010672807 A CN202010672807 A CN 202010672807A CN 111659906 B CN111659906 B CN 111659906B
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- 238000003754 machining Methods 0.000 title claims abstract description 45
- 230000005540 biological transmission Effects 0.000 claims abstract description 35
- 230000003068 static effect Effects 0.000 claims abstract description 22
- 230000007246 mechanism Effects 0.000 claims description 11
- 238000005096 rolling process Methods 0.000 claims description 8
- 210000001503 joint Anatomy 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 description 11
- 230000007480 spreading Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000003801 milling Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B3/00—General-purpose turning-machines or devices, e.g. centre lathes with feed rod and lead screw; Sets of turning-machines
- B23B3/06—Turning-machines or devices characterised only by the special arrangement of constructional units
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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
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/12—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for securing to a spindle in general
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Abstract
The invention discloses a machine tool for static machining of a workpiece, which comprises a main shaft box and a plurality of self-centering clamps, wherein a servo expanding tool bit and a main shaft servo motor are arranged on the main shaft box, a tool adjusting block and a turning tool are arranged on the servo expanding tool bit, and an X-axis servo motor and a transmission connecting piece are also arranged on the main shaft box. In the machine tool, two clamps on the self-centering clamp can be closed towards the center to clamp a workpiece to be machined, two or more self-centering clamps are selected according to the length of the workpiece to be machined to complete clamping of the workpiece, the structure can be suitable for clamping of the workpiece to be machined of different specifications, the machining radius of the turning tool can be adjusted by adjusting a tool adjusting block on a servo expanding tool bit through an X-axis servo motor, and the workpiece is machined by driving the servo expanding tool bit to rotate through a main shaft servo motor, so that machining of the workpiece when the workpiece is stationary is realized, the cost of machining the workpiece can be effectively reduced, and the machining efficiency is improved.
Description
Technical Field
The invention relates to the field of machine tools, in particular to a machine tool for static machining of workpieces.
Background
The machine tool mainly comprises a machine tool for turning a rotating workpiece by a turning tool. On the machine tool, the corresponding machining can be carried out by using a drill, a reamer, a tap, a die, a knurling tool and the like, and the machine tool is mainly divided into a horizontal machine tool, a vertical machine tool, a turret machine tool, a cutter arranging machine tool, a profiling machine tool and a multi-cutter machine tool and various specialized machine tools such as a cam shaft machine tool, a crank shaft machine tool, a wheel machine tool, a tooth shovel machine tool and the like according to different purposes and structures.
Among all machine tools, the horizontal machine tool is most widely used. The turning process is basically a process mode in which the workpiece rotates and the tool does not rotate, but is particularly heavy and long for workpieces, and is also particularly large in rotation diameter for workpieces with odd shapes, and is not the optimal choice from the energy saving and economical point of view, because when the workpiece is particularly heavy, the rotating workpiece needs a large motor drive, and the rotating speed cannot be too high, so that the energy consumption is high and the efficiency is low. When the workpiece is very long, the workpiece is driven by a high-power motor, then the workpiece is too long, the rotating speed cannot be too high, finally the too long workpiece rotates at a high speed, a plurality of supporting points are needed, the workpiece is rotated by the too long workpiece, the machining precision also has a certain influence, the workpiece with a strange shape and a very large rotation diameter needs to be balanced to rotate at a high speed, the cost is increased, the workpiece with a very large rotation diameter needs to be machined, and the large machine tool can be used for machining, so that the machining cost is very high.
For turning of particularly heavy, particularly long, odd-shaped and particularly large-diameter workpieces, there is an alternative way to carry out the machining, and for these parts, the general solution is to use a horizontal machining center for milling, or the workpiece is not rotated, and the milling cutter carries out the milling by circumferential interpolation, which generally has the disadvantages of low efficiency, high cost, low precision and the like.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a machine tool for static processing of a workpiece, which can effectively reduce processing cost and improve processing efficiency.
According to a first aspect of the invention, a machine tool for static machining of a workpiece is provided, the machine tool comprises a spindle box and a plurality of self-centering clamps arranged on one side of the spindle box at intervals, a servo expanding bit and a spindle servo motor for driving the servo expanding bit to rotate are arranged on the spindle box, a tool adjusting block and a turning tool arranged on the tool adjusting block are arranged on the servo expanding bit, an X-axis servo motor and a transmission connecting piece connected between the X-axis servo motor and the servo expanding bit are further arranged on the spindle box, the X-axis servo motor drives the transmission connecting piece to drive the tool adjusting block to transversely slide along the servo expanding bit, and two clamps which are symmetrically arranged and can oppositely and synchronously move are arranged on each self-centering clamp.
The self-centering clamp has the beneficial effects that in the machine tool for static machining, two clamps on the self-centering clamp can be closed towards the center to clamp a workpiece to be machined, two or more self-centering clamps are selected according to the length of the workpiece to be machined to finish clamping of the workpiece, the structure can be suitable for clamping of the workpiece to be machined with different specifications, the machining radius of a turning tool can be adjusted by adjusting the tool adjusting block on the servo expanding tool bit through the X-axis servo motor, and the workpiece is machined by driving the servo expanding tool bit to rotate through the main shaft servo motor, so that the machining of the workpiece in a static state is realized, the cost of workpiece machining can be effectively reduced, and the machining efficiency is improved.
According to the machine tool for static processing of the workpiece, which is an embodiment of the first aspect of the invention, the machine tool comprises a machine body, a Z-direction guide rail and a Z-axis servo motor are arranged on the machine body, the headstock is arranged on the machine body and can move along the Z-direction guide rail, and symmetry axes of the clamps which are oppositely arranged are arranged along the Z direction.
The bar workpiece to be processed is erected between each group of self-centering clamps, the bar workpiece is clamped by the clamps which are arranged on the self-centering clamps in opposite directions, and a spindle box provided with a servo expanding tool bit slides along a Z-guide rail to carry out tool feeding under the action of a Z-axis servo motor.
According to the machine tool for static machining of the workpiece, which is an embodiment of the first aspect of the invention, the tail part of the spindle box is connected with a motor base for installing the X-axis servo motor, and the transmission connecting piece comprises an X-axis screw rod arranged in the motor base and a first pull rod connected between the X-axis screw rod and a servo expanding tool bit.
The X-axis servo motor drives the X-axis screw rod to rotate, the transmission connecting piece can be pushed to integrally perform telescopic motion, and the cutter adjusting block in the servo expanding tool bit can be driven to transversely slide by the telescopic motion of the transmission connecting piece, so that the machining radius of the turning tool can be adjusted.
The first pull rod is connected with the X-axis screw rod through the connecting sleeve, and the rolling bearing is arranged between the connecting sleeve and the first pull rod, so that the X-axis screw rod can not be driven to rotate when the servo expanding tool bit is driven to rotate through the main shaft servo motor, and the structure at the rear part of the transmission connecting piece is not influenced.
According to the machine tool for static machining of the workpiece, which is provided by the embodiment of the first aspect of the invention, the side surface of each cutter adjusting block is provided with the transmission tooth, the servo expanding bit is internally provided with the gear meshed with the transmission tooth, the servo expanding bit is internally provided with the transmission rod connected with the gear, and the transmission rod extends out from the axis of the servo expanding bit and is connected with the end part of the first pull rod.
The X-axis servo motor drives the X-axis screw rod to rotate, the transmission connecting piece is pushed to do telescopic motion, the far end of the transmission connecting piece drives the gear to act, and therefore the cutter adjusting block can be driven to transversely slide in the servo expanding tool bit, and the turning tool machining radius is adjusted.
According to the machine tool for static processing of the workpiece, which is an embodiment of the first aspect of the invention, the X-axis screw rod is connected with the output end of the X-axis servo motor through a coupler.
According to the machine tool for static processing of the workpiece, provided by the embodiment of the first aspect of the invention, a connecting sleeve is arranged outside the butt joint end of the X-axis screw rod and the first pull rod, a shaft sleeve is arranged between the connecting sleeve and the X-axis screw rod, a rolling bearing is arranged between the connecting sleeve and the end part of the first pull rod, and a fastening nut positioned at the outer end of the rolling bearing is arranged at the end part of the first pull rod.
The transmission connecting piece is divided into an X-axis screw rod and a first pull rod which are connected in a segmented mode, and flexible connection is adopted between each segment and the servo motor and other connecting pieces.
According to the machine tool for static machining of the workpiece, provided by the embodiment of the invention, the shaft ends of the spindle box are provided with the two self-centering clamps at intervals, each self-centering clamp comprises two clamps which are symmetrically arranged, a sliding block which is respectively connected below the two clamps, a horizontal driving mechanism is further arranged, the output end of the horizontal driving mechanism is connected with a second pull rod, the second pull rod transversely penetrates through the two sliding blocks, a left stop block and a right stop block are arranged on two sides of one sliding block on the second pull rod, a Z-axis screw rod which is horizontally arranged is arranged below the two sliding blocks, a positive screw section and a negative screw section are respectively arranged on two sides of the Z-axis screw rod, nuts which move along with the rotation of the Z-axis screw rod are respectively arranged on the positive screw section and the negative screw section, and a nut seat is connected between the nuts and the sliding blocks.
In the machine tool structure for static machining, the self-centering clamp clamps a workpiece to be machined through two clamps which are oppositely and symmetrically arranged, in the machining process, the horizontal driving mechanism is started, when the workpiece to be machined with different diameters is machined, the second pull rod drags the sliding blocks below the two clamps to move oppositely, the two sliding blocks follow the nut and the nut seat to move oppositely along the Z-axis screw rod, the center of the workpiece to be machined, which is clamped between the two clamps, can be always in situ, the clamping precision of the workpiece can be remarkably improved, and the self-centering clamp is applicable to clamping of bars with various specifications.
The self-centering clamp is arranged, so that the clamping center of the machine tool is kept unchanged in the clamping process of the machine tool for adapting to bars with different specifications and diameters, and the machining radius of the turning tool on the servo spreading tool bit with consistent machining axes can be adjusted to machine bars with different specifications.
According to the machine tool for static processing of the workpiece, disclosed by the embodiment of the first aspect of the invention, the opposite sides of the clamp are provided with the V-shaped holding ports, the two sides of the V-shaped holding ports are provided with the cushion blocks, and the V-shaped holding ports and the cushion blocks on the two clamps are symmetrically arranged.
The V-shaped holding openings arranged on the clamps on two sides are oppositely arranged to form holding openings, a workpiece to be processed is placed in the holding openings, four supporting points are formed on the workpiece to be processed through four cushion blocks in the holding openings, and the workpiece to be processed can be kept in a stable clamping state. The V-shaped holding ports on the two sides and the cushion blocks are symmetrically arranged, so that the center of the bar part is always positioned on the symmetry axes of the two clamps which are oppositely arranged when the bar part is machined, and stable clamping of workpieces to be machined with different specifications can be maintained.
According to the machine tool for static processing of the workpiece, which is provided by the embodiment of the first aspect of the invention, the self-centering clamp further comprises a clamp seat, two sides of the clamp seat are provided with supporting arms, the Z-axis screw rod is erected between the two supporting arms, the two supporting arms are provided with bearings for erecting the Z-axis screw rod, and locking sleeves are arranged at two ends of the Z-axis screw rod.
The Z-axis screw rod is parallel to the sliding direction of the second pull rod and the two sliding blocks, the Z-axis screw rod and the second pull rod are horizontally arranged, the integral axis of the clamp can be vertically and downwards aligned with the gravity center line, and the integral stability of the clamp can be better maintained when the workpiece to be processed is processed. The two ends of the Z-axis screw rod are locked and erected between the two supporting arms on the clamp seat through the locking sleeve, and the two ends of the Z-axis screw rod are provided with bearing supports and fixed through the locking sleeve, so that the Z-axis screw rod is prevented from shifting during working, and the stability of clamping a workpiece is influenced.
According to the machine tool for static processing of the workpiece, which is disclosed by the embodiment of the first aspect of the invention, the horizontal driving mechanism is a hydraulic oil cylinder, the output end of the hydraulic oil cylinder is provided with a hydraulic shaft, the second pull rod is connected with the front end of the hydraulic shaft in a threaded manner, two sliding blocks are provided with pull rod holes, the second pull rod penetrates through the two pull rod holes to extend out, the outer diameter of a left stop block at the end part of the second pull rod is larger than the aperture of the pull rod hole, the other side of the pull rod hole at the far end of the second pull rod is provided with a right stop block in threaded connection with the second pull rod, and the right stop block is locked so that the second pull rod and the sliding block at the far end of the second pull rod are relatively fixedly arranged.
The second pull rod is installed at the front end of the hydraulic shaft through threaded connection, so that the whole fixture can be conveniently assembled, and the second pull rod can be threaded with the front end of the hydraulic shaft after penetrating through the two pull rod holes. The left stop block and the right stop block are respectively arranged at two ends of the pull rod hole, when the two clamps move oppositely or back to back, the two sliding blocks are driven to slide, so that the second pull rod and the sliding block positioned at the far end of the second pull rod are relatively fixed, and motion hysteresis cannot be generated during motion, so that the precision cannot be influenced.
Drawings
The invention is further described below with reference to the drawings and examples;
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;
FIG. 2 is a schematic view of a self-centering fixture according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a self-centering end-point in an embodiment of the invention;
FIG. 4 is a schematic diagram of a connection structure between a servo cutter head and a transmission connector according to an embodiment of the present invention;
FIG. 5 is a schematic cross-sectional view illustrating a connection structure between a servo cutter head and a transmission connector according to an embodiment of the present invention;
FIG. 6 is a front view of a connection structure between a servo cutter head and a transmission connector in an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1-3, a machine tool for static machining of a workpiece is provided, including a spindle box 100 and a plurality of self-centering clamps 200 disposed at one side of the spindle box 100 at intervals, a servo cutter head 110 and a spindle servo motor 120 driving the servo cutter head 110 to rotate are disposed on the spindle box 100, a cutter adjusting block 111 and a turning tool 112 mounted on the cutter adjusting block 111 are disposed on the servo cutter head 110, an X-axis servo motor 130 and a transmission connecting piece 140 connected between the X-axis servo motor 130 and the servo cutter head 110 are further disposed on the spindle box 100, the X-axis servo motor 130 drives the transmission connecting piece 140 to drive the cutter adjusting block 111 to slide transversely along the servo cutter head 110, and clamps 210 which are disposed symmetrically and can move synchronously in opposite directions are disposed on the respective centering clamps 200.
In the machine tool for static machining, the two clamps 210 on the self-centering clamp 200 can be closed towards the center to clamp a workpiece to be machined, two or more self-centering clamps 200 are selected according to the length of the workpiece to be machined to complete clamping of the workpiece, the structure can be suitable for clamping of the workpiece to be machined with different specifications, the machining radius of the turning tool 112 can be adjusted by adjusting the tool adjusting block 111 on the servo expanding head 110 through the X-axis servo motor 130, and the servo expanding head 110 is driven to rotate through the spindle servo motor 120 to machine the workpiece, so that machining when the workpiece is static is realized, the cost of machining the workpiece can be effectively reduced, and the machining efficiency is improved.
In some embodiments, the machine tool comprises a machine body 1000, a Z-direction guide rail 310 and a Z-axis servo motor 300 are arranged on the machine body 1000, and the headstock 100 is mounted on the machine body 1000 and can move along the Z-direction guide rail 310, and symmetry axes of the clamps 210 arranged in opposite directions are arranged along the Z-direction.
The bar workpiece to be processed is erected among the groups of self-centering clamps 200, the bar workpiece is clamped by the clamps 210 which are oppositely arranged on the self-centering clamps 200, and the spindle box 100 provided with the servo expanding tool bit 110 slides along the Z-direction guide rail 310 for tool feeding under the action of the Z-axis servo motor 300.
Referring to fig. 4 to 6, in some embodiments, a motor base 131 for mounting the X-axis servo motor 130 is connected to the tail of the headstock 100, and the transmission connector 140 includes an X-axis screw 141 disposed in the motor base 131 and a first pull rod 142 connected between the X-axis screw 141 and the servo cutter head 110.
The X-axis servo motor 130 drives the X-axis screw rod 141 to rotate, so that the transmission connecting piece 140 can be pushed to integrally perform telescopic motion, and the whole telescopic motion of the transmission connecting piece 140 can drive the cutter adjusting block 111 in the servo cutter head 110 to transversely slide, so that the machining radius of the turning tool 112 is adjusted.
The first pull rod 142 is connected with the X-axis screw rod 141 through a connecting sleeve, and a rolling bearing is arranged between the connecting sleeve and the first pull rod 142, so that the X-axis screw rod 141 is not driven to rotate when the servo expanding tool bit 110 is driven to rotate by the spindle servo motor 120, and the structure at the rear part of the transmission connecting piece 140 is not influenced.
In some embodiments, the side surface of each cutter adjusting block 111 is provided with a transmission tooth, a gear meshed with the transmission tooth is installed in the servo spreading cutter head 110, a transmission rod connected with the gear is also arranged in the servo spreading cutter head 110, and the transmission rod extends out from the axis of the servo spreading cutter head 110 and is connected with the end part of the first pull rod 142.
The X-axis servo motor 130 drives the X-axis screw rod 141 to rotate, pushes the transmission connecting piece 140 to do telescopic motion, and the distal end of the transmission connecting piece 140 drives the gear to act, so that the cutter adjusting block 111 can be driven to transversely slide in the servo expanding bit 110, and the machining radius of the turning tool 112 is adjusted.
Referring to fig. 4-6, in some embodiments, an X-axis screw 141 is coupled to the output of the X-axis servo motor 130 via a coupling.
In some embodiments, a connecting sleeve 143 is arranged outside the butt joint end of the X-axis screw rod 141 and the first pull rod 142, a shaft sleeve 144 is arranged between the connecting sleeve 143 and the X-axis screw rod 141, a rolling bearing 145 is arranged between the connecting sleeve 143 and the end part of the first pull rod 142, and a fastening nut 146 positioned at the outer end of the rolling bearing 145 is arranged at the end part of the first pull rod 142.
The transmission connecting piece 140 is divided into an X-axis screw rod 141 and a first pull rod 142 which are connected in a segmented mode, and flexible connection is adopted between the segments and between the segments, the servo motor and other connecting pieces.
In some embodiments, two self-centering clamps 200 are disposed at the shaft ends of the headstock 100 at intervals, each self-centering clamp 200 includes two symmetrically disposed clamps 210 and a slider 220 respectively connected below the two clamps 210, a horizontal driving mechanism 230 is further disposed, an output end of the horizontal driving mechanism 230 is connected with a second pull rod 231, the second pull rod 231 transversely passes through the two sliders 220, a left stop block 232 and a right stop block 233 are disposed on two sides of one slider 220 on the second pull rod 231, a horizontally disposed Z-axis screw 240 is disposed below the two sliders 220, a positive screw section and a negative screw section are disposed on two sides of the Z-axis screw 240, nuts 241 respectively mounted on the positive screw section and the negative screw section for moving along with rotation of the Z-axis screw 240, and a nut seat 242 is connected between the nuts 241 and the sliders 220.
The pitch of the positive spiral section is equal to that of the negative spiral section, the rotation directions are opposite, and under the driving of the rotation of the Z-axis screw 240, nuts 241 on the positive spiral section and the negative spiral section are driven to synchronously drive nut seats 242 on two sides to synchronously move.
In the machine tool structure for static machining, the self-centering fixture 200 clamps a workpiece to be machined through two opposite and symmetrically arranged fixtures 210, in the machining process, the horizontal driving mechanism 230 is started, when the workpiece to be machined with different diameters is machined, the second pull rod 231 drags the sliding blocks 220 below the two fixtures 210 to move in opposite directions, the two sliding blocks 220 follow the nuts 241 and the nut seats 242 to move in opposite directions along the Z-axis screw rod 240, so that the center of the workpiece to be machined clamped between the two fixtures 210 can be always in situ, the clamping precision of the workpiece can be remarkably improved, and the machine tool structure can be suitable for clamping bars with various specifications.
The self-centering fixture 200 is arranged, so that the clamping center of the machine tool is kept unchanged in the clamping process of adapting to bars with different specifications and diameters, and the machining radius of the turning tool 112 on the servo spreading tool head 110 with consistent machining axes can be adjusted to machine bars with different specifications.
In some embodiments, opposite sides of the clamps 210 are provided with V-shaped holding openings 211, two sides of the V-shaped holding openings 211 are provided with cushion blocks 212, and the V-shaped holding openings 211 and the cushion blocks 212 of the two clamps 210 are symmetrically arranged.
The V-shaped holding openings 211 provided on the clamps 210 on both sides are arranged in opposite directions to form holding openings, the workpiece to be processed is placed in the holding openings, and four supporting points are formed on the workpiece to be processed through four cushion blocks 212 in the holding openings, so that the workpiece to be processed can be kept in a stable clamping state. The V-shaped holding ports 211 and the cushion blocks 212 on the two sides are symmetrically arranged, so that the center of the bar part is always positioned on the symmetrical axes of the two clamps 210 which are oppositely arranged when the bar part is processed, and stable clamping of workpieces to be processed with different specifications can be maintained.
In some embodiments, the self-centering fixture 200 further includes a fixture base 250, two sides of the fixture base 250 are provided with supporting arms 251, the Z-axis screw 240 is erected between the two supporting arms 251, the two supporting arms 251 are respectively provided with a bearing 252 for erecting the Z-axis screw 240, and two ends of the Z-axis screw 240 are respectively provided with a locking sleeve 253.
The Z-axis screw rod 240 is parallel to the sliding direction of the second pull rod 231 and the two sliding blocks 220, and the Z-axis screw rod 240 and the second pull rod 231 are both horizontally arranged, so that the integral axis of the clamp is vertically and downwards aligned with the gravity center line, and the integral stability of the clamp can be better maintained when the workpiece to be machined is processed. The two ends of the Z-axis screw rod 240 are locked and erected between two supporting arms 251 on the fixture seat 250 through locking sleeves 253, and bearings 252 are arranged at the two ends to support and fix the Z-axis screw rod 240 through the locking sleeves 253, so that the Z-axis screw rod 240 is prevented from shifting during operation, and the stability of workpiece clamping is prevented from being influenced.
In some embodiments, the horizontal driving mechanism 230 is a hydraulic cylinder, the output end of the hydraulic cylinder is provided with a hydraulic shaft, the second pull rod 231 is in threaded connection with the front end of the hydraulic shaft, the two sliding blocks 220 are provided with pull rod holes, the second pull rod 231 extends out through the two pull rod holes, the outer diameter of a left stop block 232 at the end part of the second pull rod 231 is larger than the aperture of the pull rod hole, the other side of the pull rod hole at the distal end of the second pull rod 231 is provided with a right stop block 233 in threaded connection with the second pull rod 231, and the right stop block 233 is locked so that the second pull rod 231 and the sliding block 220 at the distal end of the second pull rod 231 are relatively fixedly arranged.
The second pull rod 231 is installed at the front end of the hydraulic shaft through threaded connection, so that the whole fixture can be assembled conveniently, and the second pull rod 231 can be connected with the front end of the hydraulic shaft through threads after passing through the two pull rod holes. The left stop block 232 and the right stop block 233 are respectively installed at two ends of the pull rod hole, when the two clamps 210 move in opposite directions or back to back, the two sliding blocks 220 are driven to slide, so that the second pull rod 231 and the sliding blocks 220 positioned at the distal end of the second pull rod 231 are relatively fixed, and no movement hysteresis is generated during movement, so that the precision is not affected.
The machine tool structure has two linear coordinate axes of an X axis and a Z axis, the turning tool 112 is driven by a servo cutter head 110 through an X axis servo motor 130 and an X axis screw rod 141, a turning tool seat is arranged on a main shaft of the servo cutter head 110, X axis feeding movement is carried out through the servo cutter head 110, and the turning tool 112 rotates along with the main shaft at a high speed, so that a workpiece is fixed, the turning tool 112 rotates at a high speed and is fed at the same time, and the purpose of turning the excircle/end face and an inner hole of the workpiece is achieved.
The invention has the following innovation points and advantages:
The self-centering clamp 200 of the automatic line is adopted, after the clamping center height of the self-centering clamp 200 is consistent with the main shaft center height, all workpieces with different diameters are clamped, the workpieces are automatically concentric with the main shaft, and correction is not needed;
The servo spreading cutter head 110 is applied to the main shaft, and the X-axis screw rod 141 is adopted to drive the servo spreading cutter head 110, so that the turning tool 112 is driven, the turning tool 112 of the machine tool has high rotating speed, high feeding precision and high processing efficiency;
The invention adopts the rotation of the workpiece fixed cutter to carry out turning, is suitable for the end surface turning of large-sized parts, overlength parts, parts with complex shapes and parts with extremely large rotation diameter, and has high machining efficiency and high machining precision.
The machine tool with the fixed workpiece, the rotary cutter and the feeding function is a novel machine tool with innovative structure and novel concept, and can be suitable for machining parts with extremely long workpiece length, extremely heavy workpiece weight, extremely complex shape and extremely large rotary diameter, and is economical, energy-saving, high in efficiency and high in precision.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present invention.
Claims (8)
1. The lathe for static machining of the workpiece is characterized by comprising a main spindle box and a plurality of self-centering clamps which are arranged at one side of the main spindle box at intervals, wherein a servo expanding tool bit and a main spindle servo motor which drives the servo expanding tool bit to rotate are arranged on the main spindle box, a tool adjusting block and a turning tool which is arranged on the tool adjusting block are arranged on the servo expanding tool bit, an X-axis servo motor and a transmission connecting piece which is connected between the X-axis servo motor and the servo expanding tool bit are also arranged on the main spindle box, the X-axis servo motor drives the transmission connecting piece to drive the tool adjusting block to transversely slide along the servo expanding tool bit, and two clamps which are symmetrically arranged and can synchronously move in opposite directions are arranged on each self-centering clamp; the shaft end of the spindle box is provided with two self-centering clamps which are arranged at intervals, each self-centering clamp comprises two symmetrically arranged clamps and sliding blocks which are respectively connected to the lower parts of the two clamps, a horizontal driving mechanism is further arranged, the output end of the horizontal driving mechanism is connected with a second pull rod, the second pull rod transversely penetrates through the two sliding blocks, two sides of one sliding block on the second pull rod are provided with left stop blocks and right stop blocks, the lower part of the two sliding blocks is provided with a Z-axis screw rod which is horizontally arranged, two sides of the Z-axis screw rod are respectively provided with a positive screw section and a negative screw section, nuts which are respectively arranged on the positive screw section and the negative screw section and move along with the rotation of the Z-axis screw rod are connected with nut seats, one side of each clamp, which is opposite, is provided with V-shaped openings, each self-centering clamp further comprises a clamp seat, two sides of each clamp seat are provided with supporting arms, the Z-axis screw rod is erected between the two supporting arms, the two support arms are respectively provided with a bearing for erecting the Z-axis screw rod, and locking sleeves are respectively arranged at the two ends of the Z-axis screw rod.
2. The lathe for stationary processing of a workpiece according to claim 1, wherein the lathe comprises a lathe body, a Z-direction guide rail and a Z-axis servo motor are arranged on the lathe body, the headstock is mounted on the lathe body and can move along the Z-direction guide rail, and symmetry axes of the clamps which are arranged in opposite directions are arranged along the Z direction.
3. The lathe for stationary processing of a workpiece according to claim 1, wherein the tail of the spindle box is connected with a motor base for mounting the X-axis servo motor, and the transmission connecting piece comprises an X-axis screw rod arranged in the motor base and a first pull rod connected between the X-axis screw rod and a servo expanding tool bit.
4. A lathe for stationary machining of a workpiece according to claim 3, wherein each of the tool adjusting blocks is provided with a gear on a side surface thereof, a gear engaged with the gear is mounted in the servo cutter head, a transmission rod connected to the gear is further provided in the servo cutter head, and the transmission rod extends from an axis of the servo cutter head to be connected to an end portion of the first pull rod.
5. The lathe for stationary processing of a workpiece according to claim 3, wherein the X-axis screw is connected with an output end of the X-axis servo motor through a coupler.
6. The lathe for stationary processing of a workpiece according to claim 3, wherein a connecting sleeve is arranged outside a butt joint end of the X-axis screw rod and the first pull rod, a shaft sleeve is arranged between the connecting sleeve and the X-axis screw rod, a rolling bearing is arranged between the connecting sleeve and the end part of the first pull rod, and a fastening nut positioned at the outer end of the rolling bearing is arranged at the end part of the first pull rod.
7. The lathe for stationary processing of a workpiece according to claim 1, wherein the cushion blocks are arranged on two sides of the V-shaped holding opening, and the V-shaped holding opening and the cushion blocks on the two clamps are symmetrically arranged.
8. The lathe for stationary processing of a workpiece according to claim 1, wherein the horizontal driving mechanism is a hydraulic cylinder, a hydraulic shaft is arranged at the output end of the hydraulic cylinder, the second pull rod is connected to the front end of the hydraulic shaft in a threaded manner, pull rod holes are formed in the two sliding blocks, the second pull rod penetrates through the two pull rod holes to extend out, the outer diameter of a left stop block at the end of the second pull rod is larger than the aperture of the pull rod hole, a right stop block in threaded connection with the second pull rod is arranged at the other side of the pull rod hole at the far end of the second pull rod, and the right stop block is locked so that the second pull rod and the sliding block at the far end of the second pull rod are relatively fixedly arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010672807.5A CN111659906B (en) | 2020-07-14 | 2020-07-14 | A machine tool for stationary machining of workpieces |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010672807.5A CN111659906B (en) | 2020-07-14 | 2020-07-14 | A machine tool for stationary machining of workpieces |
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| Publication Number | Publication Date |
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| CN111659906A CN111659906A (en) | 2020-09-15 |
| CN111659906B true CN111659906B (en) | 2025-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010672807.5A Active CN111659906B (en) | 2020-07-14 | 2020-07-14 | A machine tool for stationary machining of workpieces |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113618489B (en) * | 2021-08-12 | 2022-10-11 | 浙江品上智能科技有限公司 | Device for detecting and correcting jumping precision of numerical control machine tool and using method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204470608U (en) * | 2015-01-12 | 2015-07-15 | 福州钜立机动车配件有限公司 | A kind of irregular elongate articles turnery processing machine |
| CN212398135U (en) * | 2020-07-14 | 2021-01-26 | 广州市敏嘉制造技术有限公司 | Machine tool for static machining of workpiece |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2384839B1 (en) * | 2010-05-04 | 2013-01-02 | Karl Hiestand | Clamping device |
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2020
- 2020-07-14 CN CN202010672807.5A patent/CN111659906B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204470608U (en) * | 2015-01-12 | 2015-07-15 | 福州钜立机动车配件有限公司 | A kind of irregular elongate articles turnery processing machine |
| CN212398135U (en) * | 2020-07-14 | 2021-01-26 | 广州市敏嘉制造技术有限公司 | Machine tool for static machining of workpiece |
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| CN111659906A (en) | 2020-09-15 |
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