CN112122664B - Bridge type gantry milling intelligent machining method - Google Patents
Bridge type gantry milling intelligent machining method Download PDFInfo
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- CN112122664B CN112122664B CN202010997448.0A CN202010997448A CN112122664B CN 112122664 B CN112122664 B CN 112122664B CN 202010997448 A CN202010997448 A CN 202010997448A CN 112122664 B CN112122664 B CN 112122664B
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- milling
- cutter
- grinding
- grinding wheel
- disc
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C1/00—Milling machines not designed for particular work or special operations
- B23C1/06—Milling machines not designed for particular work or special operations with one vertical working-spindle
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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
- B23Q1/01—Frames, beds, pillars or like members; Arrangement of ways
- B23Q1/012—Portals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/02—Frames; Beds; Carriages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
- B24B53/12—Dressing tools; Holders therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/04—Protective covers for the grinding wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to the technical field of bridge type gantry milling and grinding, and discloses a bridge type gantry milling and grinding intelligent processing method which comprises a portal frame, a milling main shaft and a tool rest, wherein the milling main shaft is movably abutted to the portal frame, a workpiece is arranged on the portal frame, and a grinding head grinding wheel is arranged on the milling main shaft, and the steps are as follows: (1) The milling main shaft grabs a disc milling cutter and performs milling on a workpiece; (2) measuring the length of the disc milling cutter through a tool setting gauge; (3) replacing the disc milling cutter with the cutter rest; (4) Measuring the center outer diameter of the grinding head grinding wheel by a tool setting gauge, and calculating the height difference between the grinding head grinding wheel and the disc milling cutter; (5) Measuring the center outer diameter of the grinding head grinding wheel by a tool setting gauge, automatically calculating the outer diameter height difference value between the grinding head grinding wheel and the last grinding head grinding wheel, and moving the grinding head grinding wheel to a trimming tool for automatic trimming of the grinding head grinding wheel; and (6) grinding the grinding head grinding wheel. Realize milling and grinding compound intelligent processing, need not manual operation, save the labour cost, intelligent processing improves work efficiency.
Description
Technical Field
The invention relates to the technical field of bridge type gantry milling and grinding, in particular to an intelligent bridge type gantry milling and grinding processing method.
Background
The machine tool is a machine for manufacturing or processing machines, also called a machine tool or a machine tool, and plays a great role in modern construction of national economy.
At present, common machine tools comprise bridge type gantry machine tools and the like, and the bridge type gantry machine tools mainly realize milling, grinding and the like of a machined workpiece, wherein the milling has high-precision milling, drilling, boring, cutting and the like.
In the prior art, when a bridge gantry machine tool processes a workpiece, manual intervention is needed, the efficiency is poor, the safety problem is easy to occur, and the intelligence is lacking.
Disclosure of Invention
The invention aims to provide an intelligent bridge type gantry milling and grinding processing method, and aims to solve the problem that in the prior art, bridge type gantry milling and grinding processing is lack of intelligence.
The invention discloses an intelligent bridge type gantry milling and grinding processing method, which comprises a portal frame, a milling main shaft and a tool rest, wherein the milling main shaft is movably butted with the portal frame, a workpiece is arranged on the portal frame, and a grinding head grinding wheel is arranged on the milling main shaft, and the specific steps are as follows:
(1) The milling main shaft moves, a disc milling cutter is grabbed from the cutter rest, and the surface of the workpiece is milled;
(2) Measuring the length of the disc milling cutter through a tool setting gauge after milling;
(3) Placing the disc cutter back into the tool holder;
(4) Measuring the center outer diameter of the grinding head grinding wheel through the tool setting gauge, and calculating the height difference value of the grinding head grinding wheel and the disc milling cutter through the tool setting gauge;
(5) Performing grinding wheel dressing, namely measuring the center outer diameter size of the grinding wheel by the tool setting gauge, automatically calculating the outer diameter height difference value between the grinding wheel and the last dressing grinding wheel, and moving the grinding wheel to a dressing tool to perform automatic dressing of the grinding wheel;
(6) And grinding the milled workpiece through the grinding head grinding wheel.
Further, the portal frame comprises a base, two side beams and a crossing block, wherein the two side beams are vertically arranged on the base, the lower parts of the side beams are in butt joint arrangement with the base, the two side beams are in parallel arrangement, the two ends of the crossing block are respectively movably butt-jointed with the upper parts of the two side beams, the crossing block is in reciprocating movement along the X direction relative to the side beams, the milling main shaft is movably butt-jointed with the crossing block, and the milling main shaft is in reciprocating movement along the Y direction relative to the crossing block.
Further, the milling spindle comprises a spindle body and a milling shell, the spindle body is sleeved with the milling shell, the grinding head grinding wheel is arranged on the spindle body, and the milling shell is movably abutted to the cross block; the main shaft body moves back and forth along the Z direction relative to the milling shell.
Further, the main shaft body comprises a clamping cutter bar and an installation motor, the installation motor is used for driving the clamping cutter bar to rotate, and the clamping cutter bar is arranged in an extending mode along the Z direction; the clamp cutter bar is provided with an external thread, the disc milling cutter is provided with an installation groove, the installation groove is provided with an internal thread, and in the step (1), when the disc milling cutter is grabbed, the clamp cutter bar is embedded into the installation groove, and the clamp cutter bar is in threaded connection with the disc milling cutter.
Further, the utility model also comprises a blowing nozzle which is used for blowing out gas and is provided with a gas port, the gas port outputs gas, and the gas port and the surface of the tool setting gauge are correspondingly arranged; in step (2), the blowing nozzle cleans the surface of the tool setting gauge through the gas port output gas before measuring the length of the disc cutter.
Further, in step (5), the control board has a preset command, and the control member controls to move to the dressing tool according to the preset command to automatically dress the grinding wheel of the grinding head.
Further, the device also comprises a control board, wherein a control program is preset on the control board, and the control board controls the steps (1) - (6) based on the control program.
Further, the tool rest comprises a fixing structure, wherein the fixing structure is used for fixing the disc milling cutter, the fixing structure comprises a fixing table and two tool claws, each tool claw is rotatably arranged on the fixing table, and the two tool claws clamp the disc milling cutter; the fixed structure and the portal frame are correspondingly arranged, and the fixed structure is positioned below the milling spindle.
Further, the tool rest is provided with a door guide rail, the tool rest door is movably abutted to the door guide rail, and the tool rest door is used for covering the fixing structure or opening the fixing structure.
Further, the milling spindle comprises a grinding head motor, wherein the grinding head motor is used for driving the grinding head grinding wheel, and the grinding head motor is horizontally arranged; along the Z direction, the bottom of bistrique emery wheel forms the grinding part, the bottom of dish milling cutter forms mills the portion, the grinding part is in the top of milling the portion.
Compared with the prior art, when the bridge type gantry milling and grinding intelligent processing method is used for carrying out milling and grinding combined processing on a workpiece, the workpiece is placed on the portal frame, firstly, the milling main shaft moves, the disc milling cutter is grabbed from the cutter rest and then moves to the upper part of the workpiece, and the surface of the workpiece is subjected to milling processing, such as milling, drilling, boring, cutting and the like; then, after milling, measuring the length of the disc milling cutter by a tool setting gauge, and calculating the height difference between the grinding head grinding wheel and the disc milling cutter; then the disc milling cutter is put back to the tool rest, and the milled workpiece is ground by the grinding head grinding wheel; thus, the milling and grinding compound intelligent processing is realized, the whole processing process does not need manual operation, the labor cost is saved, the construction risk is reduced, and meanwhile, the intelligent processing is realized, and the working efficiency is improved.
Drawings
FIG. 1 is a schematic flow chart of an intelligent bridge type gantry milling and grinding processing method provided by the invention;
fig. 2 is a schematic front view of the bridge type gantry milling intelligent processing method provided by the invention;
FIG. 3 is a schematic sectional view of part A of the bridge type gantry milling intelligent processing method provided by the invention;
fig. 4 is a schematic perspective view of a milling spindle of the bridge type gantry milling intelligent machining method provided by the invention;
fig. 5 is a schematic front view of a milling spindle of the bridge type gantry milling intelligent machining method provided by the invention;
FIG. 6 is a schematic cross-sectional view of a milling spindle of the bridge type planer milling intelligent machining method provided by the invention;
fig. 7 is a schematic front view of a milling spindle of the bridge type gantry milling intelligent machining method provided by the invention;
fig. 8 is a schematic perspective view of a fixed structure of the bridge type gantry milling intelligent processing method provided by the invention;
fig. 9 is a schematic perspective view of a tool rest of the bridge type gantry milling intelligent machining method provided by the invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The implementation of the present invention will be described in detail below with reference to specific embodiments.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present invention, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "left", "right", etc., based on the azimuth or positional relationship shown in the drawings, it is only for convenience of describing the present invention and simplifying the description, but it is not indicated or implied that the apparatus or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus terms describing the positional relationship in the drawings are merely illustrative and should not be construed as limitations of the present patent, and specific meanings of the terms described above may be understood by those skilled in the art according to specific circumstances.
Referring to fig. 1-9, a preferred embodiment of the present invention is provided.
The bridge type gantry milling intelligent machining method comprises a portal frame 1, a milling main shaft 2 and a tool rest 7, wherein the milling main shaft 2 is movably abutted to the portal frame 1, a workpiece is placed on the portal frame 1, a grinding head grinding wheel 4 is arranged on the milling main shaft 2, and the specific steps are as follows:
(1) The milling main shaft 2 moves, the disc milling cutter 3 is grabbed from the cutter rest 7, and the surface of the workpiece is milled;
(2) After milling, measuring the length of the disc milling cutter 3 through a tool setting gauge 9;
(3) The disc milling cutter 3 is put back to the cutter rest 7;
(4) Measuring the center outer diameter size of the grinding head grinding wheel 4 through a tool setting gauge 9, and calculating the height difference value of the grinding head grinding wheel and the disc milling cutter through the tool setting gauge 9;
(5) Dressing the grinding wheel 4, measuring the center outer diameter size of the grinding wheel 4 by a tool setting gauge 9, automatically calculating the outer diameter height difference value between the grinding wheel 4 and the last dressing grinding wheel 4, and moving the grinding wheel 4 to a dressing tool to automatically dress the grinding wheel 4;
(6) And grinding the milled workpiece by using a grinding head grinding wheel 4.
In the bridge type gantry milling and grinding intelligent processing method, when the workpiece is subjected to milling and grinding composite processing, the workpiece is placed on the portal frame 1, firstly, the milling main shaft 2 moves, the disc milling cutter 3 is grabbed from the cutter rest 7, and then moves to the upper part of the workpiece, and the surface of the workpiece is subjected to milling processing, such as milling, drilling, boring, cutting and the like; then, after milling is finished, the tool setting gauge 9 measures the length of the disc milling cutter 3, and the height difference between the grinding head grinding wheel 4 and the disc milling cutter 3 is calculated; then the disc milling cutter 3 is put back to the cutter rest 7, and the milled workpiece is ground by the grinding head grinding wheel 4; thus, the milling and grinding compound intelligent processing is realized, the whole processing process does not need manual operation, the labor cost is saved, the construction risk is reduced, and meanwhile, the intelligent processing is realized, and the working efficiency is improved.
The device also comprises a control board, wherein a control program is preset on the control board, and the control board controls the steps (1) - (6) based on the control program.
The portal frame 1 comprises a base 11, two side beams 12 which are vertically arranged on the base 11 and a crossing block 5, wherein the lower parts of the side beams 12 are in butt joint with the base 11, the two side beams 12 are in parallel arrangement, two ends of the crossing block 5 are respectively movably butt-jointed with the upper parts of the two side beams 12, the base 11 is used for placing workpieces, the crossing block 5 is conveniently arranged under the action of the two side beams 12, and the setting stability of the crossing block 5 is enhanced.
The top of the side beams 12 is provided with X guide rails, the X guide rails of the two side beams 12 are arranged in parallel and corresponding, and the two ends of the crossing block 5 are respectively movably butted with the X guide rails of the two side beams 12, so that the crossing block 5 and the side beams 12 are movably butted.
The portal frame 1 comprises an X motor, wherein the X motor is used for driving the cross block 5 to move along an X guide rail relative to the side beam 12, and the X motor is electrically connected with the control board; in this way, a reciprocating movement in the X direction is achieved across the block 5 relative to the side beams 12.
The crossing block 5 is provided with a Y guide rail, and the milling spindle 2 is movably butted with the Y guide rail, so that the movable butt joint of the crossing block 5 and the milling spindle 2 is realized.
The crossing block 5 is provided with a Y motor which is used for driving the milling spindle 2 to move along a Y guide rail relative to the crossing block 5, and the Y motor is electrically connected with the control board; in this way, a reciprocating movement of the milling spindle 2 in the Y-direction with respect to the cross-piece 5 is achieved.
The base 11 includes placing the platform, places the platform and is used for placing the work piece, places the platform and has the standing groove of undercut arrangement, strengthens the placement steadiness of work piece.
The placing table is provided with a communicating groove which is communicated with the placing groove; the base 11 includes fixed block and fixed motor, and fixed motor is arranged in the fixed block along horizontal migration, and the fixed block is arranged in the intercommunication groove, and fixed motor is electric connection with the control panel and arranges, like this, plays the reinforcement effect to the work piece through the fixed block, the placement steadiness of reinforcing work piece.
Including a plurality of fixed blocks, through a plurality of fixed blocks, realize the centre gripping to the work piece, strengthen the placement steadiness of work piece.
The device comprises three fixed blocks and three communicating grooves, wherein the three fixed blocks are arranged in a triangular mode, each fixed block is arranged in a one-to-one correspondence with each communicating groove, and each communicating groove is respectively communicated with the placing groove; thus, when the workpiece is fixed, the three fixing pieces clamp the workpiece along the triangle, and the placement stability of the workpiece is enhanced.
The placing table is provided with sucking disc pieces which are arranged in a shape of big end down, the sucking disc pieces are communicated with the placing groove, the control board controls the sucking disc pieces to start, the sucking disc pieces output adsorption force, when the workpiece is placed on the base 11, the workpiece and the sucking disc pieces are in an up-down abutting arrangement, the control board controls the sucking disc pieces to start, the sucking disc pieces adsorb the workpiece, and the stability of the workpiece is enhanced.
That is, when the work piece is placed, the control panel controls the suction disc piece to start earlier, and the suction disc piece adsorbs the work piece, then carries out initial positioning to the work piece, removes at each fixed block of control, until each fixed block centre gripping work piece, realizes final location, the stability of placing of reinforcing work piece.
The fixed block is provided with a fixed surface for abutting against the workpiece, the fixed surface is paved with an elastic layer, the elastic layer has elasticity, and when the fixed block clamps and fixes the workpiece, the damage to the outer surface of the workpiece is reduced.
The elastic layer is provided with a plurality of convex particles, so that the friction force between the elastic layer and the workpiece is enhanced, and the placement stability of the workpiece is enhanced.
The base 11 comprises a rotary table and a rotary motor, wherein the rotary motor is used for driving the rotary table to rotate circumferentially; the placing table and the rotating table are in up-down butt joint arrangement, so that the rotating sleeve rotates to drive the placing table to rotate, the change of the workpiece position is realized, and the workpiece is conveniently machined.
The milling spindle 2 comprises a spindle body 22 and a milling shell 21, the milling shell 21 is sleeved with the spindle body 22, the grinding head grinding wheel 4 is arranged on the spindle body 22, and the milling shell 21 is movably butted with the cross block 5; the milling housing 21 has a Z-rail, to which the spindle body 22 is movably docked, and the milling spindle 2 comprises a Z-motor for driving the spindle body 22 to reciprocate in the Z-direction relative to the milling housing 21.
Thus, through the X motor, the Y motor and the Z motor, the multi-dimensional movement of the main shaft body 22 is realized, and different processing requirements are met.
The periphery of the main shaft body 22 is provided with clamping strips, the milling shell 21 is provided with clamping grooves, and the clamping strips are embedded into the clamping grooves, so that the main shaft body 22 moves back and forth along the Z direction relative to the milling shell 21, and the main shaft body 22 moves more stably.
The main shaft body 22 is arranged in a rectangular strip shape, clamping strips are respectively arranged at four corners of the main shaft body 22, the milling shell 21 is provided with four clamping grooves, and the clamping grooves are arranged in a one-to-one correspondence manner with the clamping strips; in this way, the spindle body 22 reciprocates in the Z direction relative to the milling housing 21, and the spindle body 22 moves more smoothly.
The milling spindle 2 comprises a plurality of spindle cylinders, a control board is electrically connected with the spindle cylinders, the spindle cylinders comprise cylinder shells and cylinder rods, the inner ends of the cylinder rods are embedded into the cylinder shells, the cylinder rods reciprocate relative to the cylinder shells, the cylinder shells are in butt joint with the milling shell 21, and the outer ends of the cylinder rods are in butt joint with the spindle body 22; in this way, the control board controls the cylinder rod to move relative to the cylinder shell, so that the main shaft body 22 moves relative to the milling shell 21 along the Z direction, and milling and grinding are realized.
The milling spindle 2 comprises a grinding wheel cover 41, the grinding wheel cover 41 is covered on the upper part of the grinding head grinding wheel 4, the dust blocking effect is achieved, and the diffusion of impurities such as iron powder and the like generated during processing is reduced.
In addition, when the grinding wheel 4 is not used, the grinding wheel 4 is prevented from being completely exposed under the action of the wheel cover 41, and the grinding wheel 4 is protected.
The grinding wheel cover 41 comprises a wheel cover body and a wheel cover plate, one end of the wheel cover plate is movably abutted with the wheel cover body, the other end of the wheel cover plate is movably arranged, the wheel cover body and the wheel cover plate form a protection cavity, and the protection cavity is used for protecting the grinding wheel 4 of the grinding head, so that the opening or closing of the protection cavity is realized through the swinging of the wheel cover plate relative to the wheel cover body; and the grinding head grinding wheel 4 is convenient to replace, maintain and the like.
The main shaft body 22 comprises a clamping cutter bar and a mounting motor, wherein the mounting motor is used for driving the clamping cutter bar to rotate, and the clamping cutter bar is arranged in an extending way along the Z direction; the clamping cutter bar is provided with an external thread, the disc milling cutter 3 is provided with an installation groove, the installation groove is provided with an internal thread, and in the step (1), when the disc milling cutter 3 is grabbed, the clamping cutter bar is embedded into the installation groove and is in threaded connection with the disc milling cutter 3; the automatic grabbing of the disc milling cutter 3 is realized, and the intelligent disc milling cutter is realized.
The outer surface of the clamping cutter bar is provided with a wear-resistant belt, and when the clamping cutter bar is embedded into the installation groove, the wear-resistant belt is respectively abutted against the clamping cutter bar and the disc milling cutter 3, so that the abrasion between the clamping cutter bar and the disc milling cutter 3 is reduced.
The disc milling cutter 3 is provided with a reinforcing opening, the main shaft body 22 comprises a reinforcing strip, the reinforcing strip shell moves horizontally in a reciprocating mode, after the disc milling cutter 3 is automatically grabbed, the reinforcing opening and the reinforcing strip are correspondingly arranged, the reinforcing strip is driven to be embedded into the reinforcing opening, and therefore grabbing stability of the disc milling cutter 3 is enhanced.
The tool setting gauge also comprises an air blowing nozzle, wherein the air blowing nozzle is used for blowing out air, and is provided with an air port, the air port outputs the air, and the air port is correspondingly arranged with the surface of the tool setting gauge 9; in step (2), before measuring the length of the disc milling cutter 3, the blowing nozzle outputs gas through the gas port to clean the surface of the tool setting gauge 9; the accuracy of measurement of tool setting gauge 9 is improved to the machining precision of work piece is strengthened.
In step (5), dressing of the grinding head grinding wheel 4 is performed in the following manner: the control panel has a preset instruction, and the control piece controls to move to the dressing tool according to the preset instruction to automatically dress the grinding wheel 4 of the grinding head; the grinding head grinding wheel 4 is automatically trimmed before being processed, so that the processing precision of a workpiece is enhanced.
The preset command is a time interval, such as half an hour, 1 hour, etc.
The preset instructions are associated with the feeding amount of the workpiece, and the control panel sets different preset instructions according to the feeding amount of the workpiece so as to meet different processing requirements.
The control panel is preset with calculation program, and tool setting gauge 9 is electric connection with the control panel, and tool setting gauge 9 measuring data transmission is to the control panel, and the control panel is based on tool setting gauge 9's data, calculates the external diameter of bistrique emery wheel 4 voluntarily, and the difference in height between last time.
The trimming tool can be a diamond pen 8, and the diamond pen 8 is used for trimming the outer diameter height of the grinding head grinding wheel 4, so that the machining precision of a workpiece is ensured.
When the control board judges that the outer diameter height of the grinding head grinding wheel 4 needs to be trimmed based on the data of the tool setting gauge 9, the grinding head grinding wheel 4 automatically passes through the diamond pen 8, and then the outer diameter height adjusting range of the grinding head grinding wheel 4 is about 0.1 mm.
The grinding head grinding wheel 4 is driven to move through the trimming structure to realize automatic trimming; and the machining precision of the workpiece is enhanced.
The tool rest 7 comprises a fixing structure 6, the fixing structure 6 is used for fixing the disc milling cutter 3, the fixing structure 6 comprises a fixing table and two tool claws 61, each tool claw 61 is rotatably arranged on the fixing table, and the two tool claws 61 clamp the disc milling cutter 3; the fixed structure 6 is arranged corresponding to the portal frame 1, and the fixed structure 6 is arranged below the milling spindle 2.
In this way, when the milling spindle 2 takes the disc milling cutter 3, the fixing structure 6 withdraws the fixing force, so that the disc milling cutter 3 is in butt joint with the milling spindle 2, and the disc milling cutter 3 is taken; after the workpiece is milled, the disc milling cutter 3 is put back to the fixed table, the disc milling cutter 3 is clamped by the fixed structure 6 through the two cutter claws 61, the placement stability of the disc milling cutter 3 is guaranteed so as to be used again later, and after the fixed structure 6 applies a fixed force, the milling spindle 2 is reset to carry out the next processing.
In addition, the number of the fixing structures 6 can be one or a plurality, and a plurality of the fixing structures 6 can be used for placing different disc milling cutters 3 so as to meet different processing requirements.
The other ends of the two cutter claws 61 are arranged in a connected manner by a spring, the middle parts of the cutter claws 61 are arranged in a rotary connection with the fixed table, and one ends of the two cutter holding cutters tend to approach each other.
Like this, support the other end of pressing two cutter claws 61 through this spring, make the one end that two cutter claws 61 pressed from both sides be close to each other and arrange to make the centre gripping of dish milling cutter 3 more stable, when taking out dish milling cutter 3, directly draw out dish milling cutter 3 along the horizontal direction can, the same reason, when placing the cutter, directly along the horizontal direction stopper in dish milling cutter 3 can, be convenient for take out and place of dish milling cutter 3.
And, the side wall of the two blades 61 holding the blade takes an arc shape
The door opening device also comprises a knife rest 7 door, wherein the knife rest 7 is provided with a door guide rail, the knife rest 7 door is movably abutted against the door guide rail, and the knife rest 7 door is used for covering the fixed structure 6 or opening the fixed structure 6; like this, after snatching the dish milling cutter 3, tool rest 7 door closure is established and is sealed fixed knot and is constructed 6, has avoided impurity such as iron powder that work piece processing produced to pile up on fixed knot constructs 6, avoids influencing fixed effect of fixed knot constructs 6.
Furthermore, when the disc cutter 3 needs to be taken or put back, the fixing structure 6 is opened by the cutter rest 7, so that the disc cutter 3 can be taken and put back conveniently.
Furthermore, after the disc milling cutter 3 is put back, the closed fixing structure 6 is arranged on the door cover of the tool rest 7, so that impurities such as iron powder generated by grinding a workpiece are prevented from being accumulated on the disc milling cutter 3, the use precision of the disc milling cutter 3 is ensured, and the milling processing of the workpiece is facilitated.
The milling spindle 2 comprises a grinding head motor 42, wherein the grinding head motor 42 is used for driving a grinding head grinding wheel 4, and the grinding head motor 42 is horizontally arranged; along the Z direction, the bottom of the grinding head grinding wheel 4 forms a grinding part, the bottom of the disc milling cutter 3 forms a milling part, and the grinding part is positioned above the milling part; therefore, the grinding head grinding wheel 4 is prevented from influencing the milling of the disc milling cutter 3, and meanwhile, when the milling and grinding are switched, the grinding head grinding wheel 4 does not need to be replaced, so that the processing steps are simplified, and the processing efficiency is greatly improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (5)
1. The bridge type gantry milling and grinding intelligent machining method is characterized by comprising a portal frame, a milling main shaft and a tool rest, wherein the milling main shaft is movably butted with the portal frame, a workpiece is arranged on the portal frame, and a grinding head grinding wheel is arranged on the milling main shaft, and the specific steps are as follows:
(1) The milling main shaft moves, a disc milling cutter is grabbed from the cutter rest, and the surface of the workpiece is milled;
(2) Measuring the length of the disc milling cutter through a tool setting gauge after milling;
(3) Placing the disc cutter back into the tool holder;
(4) Measuring the center outer diameter of the grinding head grinding wheel through the tool setting gauge, and calculating the height difference value of the grinding head grinding wheel and the disc milling cutter through the tool setting gauge;
(5) Performing grinding wheel dressing, namely measuring the center outer diameter size of the grinding wheel by the tool setting gauge, automatically calculating the outer diameter height difference value between the grinding wheel and the last dressing grinding wheel, and moving the grinding wheel to a dressing tool to perform automatic dressing of the grinding wheel;
(6) Grinding the milled workpiece through the grinding head grinding wheel;
the portal frame comprises a base, two side beams and a crossing block, wherein the side beams are vertically arranged on the base, the lower parts of the side beams are in butt joint with the base, the two side beams are in parallel arrangement, the two ends of the crossing block are respectively movably butt-jointed with the upper parts of the two side beams, the crossing block moves back and forth along the X direction relative to the side beams, the milling main shaft is movably butt-jointed with the crossing block, and the milling main shaft moves back and forth along the Y direction relative to the crossing block;
the base comprises a placing table, wherein the placing table is used for placing a workpiece and is provided with a placing groove which is arranged in a downward concave manner; the placing table is provided with sucking disc pieces which are arranged in a shape of big top and small bottom, the sucking disc pieces are communicated with the placing groove, when a workpiece is placed on the base, the workpiece and the sucking disc pieces are in up-down abutting arrangement, the sucking disc pieces are controlled by the control board to start, and the sucking disc pieces adsorb the workpiece;
the milling spindle comprises a spindle body and a milling shell, the spindle body is sleeved with the milling shell, the grinding head grinding wheel is arranged on the spindle body, and the milling shell is movably abutted to the crossing block; the main shaft body moves back and forth along the Z direction relative to the milling shell;
the cutter rest comprises a fixing structure, wherein the fixing structure is used for fixing the disc milling cutter, the fixing structure comprises a fixing table and two cutter claws, each cutter claw is rotatably arranged on the fixing table, and the two cutter claws clamp the disc milling cutter; the fixed structure is arranged corresponding to the portal frame and is positioned below the milling spindle;
the cutter claws comprise one ends for clamping a cutter, the other ends of the two cutter claws are connected through springs, the middle parts of the cutter claws are rotatably connected with the fixed table, and one ends of the two cutter claws for clamping the cutter tend to be close to each other;
the tool rest is provided with a door guide rail, the tool rest door is movably abutted to the door guide rail, and the tool rest door is used for covering the fixing structure or opening the fixing structure;
the main shaft body comprises a clamping cutter bar and a mounting motor, the mounting motor is used for driving the clamping cutter bar to rotate, and the clamping cutter bar is arranged in an extending way along the Z direction; the clamping cutter bar is provided with an external thread, the disc milling cutter is provided with an installation groove, the installation groove is provided with an internal thread, and in the step (1), when the disc milling cutter is grabbed, the clamping cutter bar is embedded into the installation groove, and the clamping cutter bar and the disc milling cutter are in threaded connection; the outer surface of clamp cutter arbor is equipped with wear-resisting area, when clamp cutter arbor embedding install the groove, wear-resisting area is contradicted respectively press from both sides the cutter arbor with the disc milling cutter.
2. The bridge type gantry milling intelligent machining method of claim 1, further comprising a blowing nozzle, wherein the blowing nozzle is used for blowing out gas, the blowing nozzle is provided with a gas port, the gas port outputs gas, and the gas port is correspondingly arranged with the surface of the tool setting gauge; in step (2), the blowing nozzle cleans the surface of the tool setting gauge through the gas port output gas before measuring the length of the disc cutter.
3. The bridge type planer-type milling intelligent processing method of claim 1, further comprising a control board, wherein a control program is preset on the control board, and the control board controls the steps (1) to (6) based on the control program.
4. The intelligent bridge type planer milling and grinding method according to claim 3, wherein in the step (5), the control board has a preset command, and the control board controls the grinding head grinding wheel to move to the trimming tool according to the preset command so as to automatically trim the grinding head grinding wheel.
5. The bridge type gantry milling intelligent machining method of claim 1, wherein the milling spindle comprises a grinding head motor, the grinding head motor is used for driving the grinding head grinding wheel, and the grinding head motor is horizontally arranged; along the Z direction, the bottom of bistrique emery wheel forms the grinding part, the bottom of dish milling cutter forms mills the portion, the grinding part is in the top of milling the portion.
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| CN112122664A (en) | 2020-12-25 |
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