CN202726651U - Numerical control tool grinder used for sharpening blade of disc milling cutter - Google Patents
Numerical control tool grinder used for sharpening blade of disc milling cutter Download PDFInfo
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- CN202726651U CN202726651U CN2012202783981U CN201220278398U CN202726651U CN 202726651 U CN202726651 U CN 202726651U CN 2012202783981 U CN2012202783981 U CN 2012202783981U CN 201220278398 U CN201220278398 U CN 201220278398U CN 202726651 U CN202726651 U CN 202726651U
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Abstract
The utility model relates to a numerical control tool grinder used for grinding a blade of a disc milling cutter. The numerical control tool grinder is characterized by comprising a grinder body (16), a stand column (7), a horizontal working table, a longitudinal working table, a numerical control rotating working table (12), a vertical feed planker (8) and a grinding electric main shaft (9), wherein a cross-shaped sliding table structure which consists of the horizontal working table and the longitudinal working table is assembled on the grinder body (16), the numerical control rotating working table (12) is aslant assembled on the horizontal working table, and the disc milling cutter to be sharpened is arranged on a positioning core shaft which is fixedly connected with the numerical control rotating working table (12). According to the numerical control tool grinder used for grinding the blade of the disc milling cutter disclosed by the utility model, the multi-shaft numerical control linkage machine tool is adopted, the motion accuracy of the machine tool is high, the grinding of a complex curved surface is realized, the grinding of the blade of the disc milling cutter is satisfied, and a cutter is provided for forming a small batch of large gears, screws, worms and the like.
Description
Technical field
The utility model belongs to the machining equipment field, particularly a kind of numerical control tool grinder for dish cutting plate for milling cutters sharpening.
Background technology
The forming disk milling cutter is used for the helicoid form milling processing such as gear, screw rod, formed by cutter hub, blade and lock-screw etc., and be a kind of common cutter.The cutter material that disc milling cutter is commonly used has two kinds of whole high-speed steel and carbide alloy empiecements, and the carbide alloy empiecement can be divided into again the throw away carbide chip and the carbide chip of can refacing.Because high-speed steel tool cutting linear velocity low (about 40m/min) causes working (machining) efficiency and tool life all very low, generally be not used in the batch occasion of the powerful millings such as gear, screw rod at present.
Throw away carbide chip surface scribbles one deck titanium carbide or titanium nitride as thin as a wafer, can reduce the frictional force between cutter hub and the workpiece cutting surface, improve cutting linear velocity (gear milling cutter can reach 150m/min), anti-cementability, the wearability of cutter, improve cutting wear, be a present the most widely used class cutter comprehensively; But after the wearing and tearing of cutter face coat, coating is difficult to return to the performance of new coating again, often can only integral body scrap.Therefore throw away chip is applicable to a large amount of productions, tool specification is the occasion of typing relatively, and the processing object that often need to change for the cutting edge roundness shape, because of the throw away carbide chip after coating can't by the user by the shape of own needs voluntarily grinding dressing can't use.
Although be lower than coated cutting tool without cutting tool coated with hard alloy at aspects such as tool life, anti-material affinity, the performances such as the hardness of its matrix, red hardness, wearability are far above high-speed steel; On the other hand, because the hard alloy cutter of can refacing does not have cated restriction, can carry out grinding dressing according to the shape that the user needs, usage comparison is flexible.Therefore, when the form millings such as large specification, small lot gear, screw rod, the utilization hard alloy cutter of can refacing can satisfy the needs that the cutter molded line often changes, and is a kind of good milling scheme.The blade molded line of forming disk milling cutter generally is to utilize without the Instant Center Envelope method to cut the reverse envelope formation of shape according to workpiece end face, is very complicated discrete curve.
For the complicated cutting edge shape that this type of discrete curve forms, the general tool grinding machine is difficult to processing, need to be equipped with professional software with the multi-axis linkage numerical control cutter and tool grinding machine and can carry out grinding, and it is very high that the lathe of this type of tool master grinding machine becomes.Also there is a problem with the processing disc-shaped milling cutter of numerical control tool grinder, disc milling cutter utilizes voussoir to be installed in respectively in the cutterhead breach by a plurality of independently blades, utilize the universal numerical control cutter and tool grinding machine to be difficult to a grinding of all blades of whole cutterhead is finished, but each blade is pulled down rear respectively grinding from cutterhead, refill and be fitted on the cutterhead, thereby caused blade secondary rigging error, affected the overall precision of cutterhead.
Summary of the invention
Can't grinding forming dish milling cutter for solving the general tool grinding machine, and the universal numerical control cutter and tool grinding machine exists the technical problems such as cost height, blade secondary rigging error, the utility model that a kind of numerical control tool grinder for coiling the cutting plate for milling cutters sharpening is provided.The characteristics such as that this cutter and tool grinding machine not only has is simple in structure, precision is high, grinding efficiency is high, manufacturing cost is very low, and a grinding forming of dish cutter blade that can will assemble are without cutterhead secondary clamping error.
The blade of forming disk milling cutter can refaced is installed on the dish type cutter hub, and blade is refaced behind the reconditioning that comprises the blade tooth shape and the blade knife face to reconditioning.For simplifying the machine tool motion relation, the blade of refacing adopts zero anterior angle usually, therefore can be reduced to the grinding of two-dimensional curve to the reconditioning of tooth shape; For preventing that rear knife face from causing interference in working angles, relief angle is reasonably chosen according to being cut the factors such as material, manufacturing procedure.
The utility model adopts following technical scheme for the characteristics of forming disk milling cutter grinding:
A kind of numerical control tool grinder for dish cutting plate for milling cutters sharpening, comprise lathe bed 16, column 7, horizontal work level, vertical workbench, NC rotary table 12, vertical feed planker 8, grinding electric main shaft 9, horizontal work level and vertical workbench form cross sliding table structure and are assemblied on the lathe bed 16, NC rotary table 12 tilts to be assemblied on the horizontal work level, and disc milling cutter to be ground is installed on the positioning core axle that is connected with NC rotary table 12; Column 7 places the rear side of lathe bed 16, the grinding electric main shaft 9 that column 7 front guide rails are equipped with vertical feed planker 8 and are connected with vertical feed planker 8, and grinding electric main shaft 9 horizontal levels are installed.
Described disc milling cutter is comprised of dish type cutter hub 1, blade dog screw 2, carbide chip 3, locking wedge block 4, lock-screw 5, carbide chip 3 is contained in the cutter groove of dish type cutter hub 1, and determines the installation site of blade on cutter hub by blade dog screw 2; Locking wedge block 4 is pressed in carbide chip 3 in the cutter groove, by lock-screw 5 locking wedge blocks, so that blade is fixed in the cutter groove.
Described column 7 fronts are provided with Z axis feed system 6, Z axis feed system 6 comprises the Z axis line slideway, vertical feed planker 8 is fixed on the Z axis line slideway of Z axis feed system 6, the feed screw nut seat of vertical feed planker 8 inside links to each other with Z axis feed system 6, Z axis driven by servomotor precision ball screw pair of nut rotation by Z axis feed system 6 promotes vertical feed planker 8 and makes the Z-direction traveling priority.Be equipped with grinding electric main shaft 9 at vertical feed planker 8, the axis of grinding electric main shaft 9 and X-axis utilize the grinding wheel chuck of electric front-end of spindle that emery wheel 10 is fixed on the grinding electric main shaft 9 in the same way, realize the main motion of emery wheel rotation.
Described bed piece 16 is fixed ground by iron gasket for machine tool and fot screw, bed piece 16 is provided with X-axis feed system 17, X-axis feed system 17 comprises the X-direction line slideway, be fixed with table feed slide 15 at the X-axis line slideway, the feed screw nut seat of table feed slide 15 bottoms links to each other with X-axis feed system 17, by the rotation of X-axis driven by servomotor precision ball screw pair of nut, push work platform feeding slide 15 is made the X-direction traveling priority.
Described table feed slide 15 is provided with Y-axis feed system 14, Y-axis feed system 14 comprises the Y direction line slideway, workbench 13 is fixed on the Y-axis line slideway, the feed screw nut seat of workbench 13 bottoms links to each other with Y-axis feed system 14, by the rotation of Y-axis driven by servomotor precision ball screw pair of nut, push work platform is made the Y direction traveling priority.
Uniform T-slot is arranged on the workbench, utilize T shape screw that NC rotary table 12 is fixed on the workbench 13, NC rotary table is in tilted layout to satisfy the contact angle needs of emery wheel and workpiece, and realizes that the calibration of the different blades of grinding disc milling cutter needs.Be provided with an alignment pin in the middle of the numerical control rotating platform, the location that utilizes this alignment pin and disc milling cutter 11 upper surface keyways to realize cutterhead determines to treat that the space geometry between sharpening sheet and the emery wheel concerns.
Further scheme is to adopt three numerical control linear axis by the arranged in form of pairwise orthogonal, forms cartesian coordinate system, and namely X Y Z axis realizes that cutter approaches any point that approaches in the rectangular coordinate system by the fixation arrow.Three linear axis all adopt the configuration mode of permanent-magnet alternating current servo motor+precision ball screw+line slideway, to realize the digital control of each axle and to improve positioning accuracy and the repetitive positioning accuracy of each axle.
The dish milling cutter has a plurality of circumferentially uniform blades, and with tilting to be installed in numerical control rotating platform on the horizontal work level, a calibration action behind the blade is finished in the grinding of realization dish milling cutter; By being provided with radial location pin and circumferential block, realize the location of cutterhead in the lathe rectangular coordinate system on the numerical control rotating platform, each treats tool sharpening and the emery wheel relation in lathe coordinate system to be convenient to determine the dish milling cutter.
The column front of lathe bed rear side is provided with line slideway, and vertical saddle is supported on this line slideway, realizes the high accuracy linear servo drive by permanent-magnet alternating current servo motor+precision ball screw, satisfies the motion in the vertical direction of grinding process medium plain emery wheel.Grinding electric main shaft is installed on the vertical saddle by screw, and electric main-shaft axis is vertical with vertical saddle, and is parallel with vertical working table movement direction.The electricity spindle nose is equipped with corundum wheel by grinding wheel chuck, is used for the grinding disc cutting plate for milling cutters.
Advantage of the present utility model and good effect have:
The utility model adopts the multi-axis numerical control linkage machine tool, and the machine tool motion precision is high, can realize complex-curved grinding, satisfies the grinding of disc milling cutter tooth shape, solves the cutter problem in the shapings such as large-scale, small lot gear, screw rod, worm screw;
The utility model fitting-type line computation software realizes that helicoid that different end faces cut shape without the Instant Center Envelope milling, satisfies the form milling of the complicated helicoids such as profile modified gear, profile modifying gear, special spiral rod especially easily;
The utility model utilizes numerical control rotating platform to realize the automatically accurate calibration location of cutter, and the disc milling cutter one-time positioning can realize the grinding of all tooth shapes, and secondary clamping that need not blade has improved the precision of cutter, satisfies the helicoid milling of degree of precision;
The utility model machine arrangement is reasonable, simple in structure, compact, is equivalent to the part of similar import numerical control tool grinder price, has good economy.
Description of drawings
Fig. 1 is that the utility model is used for helicoid without the structural representation of the disc milling cutter of Instant Center Envelope milling.
Fig. 2 is machine tool structure schematic diagram of the present utility model.
Fig. 3 is emery wheel and dish type cutter hub relative position schematic diagram.
Among the figure: 1 is the dish type cutter hub; 2 is the blade dog screw; 3 is carbide chip; 4 is locking wedge block; 5 is lock-screw; 6 is the Z axis feed system; 7 is column; 8 are the vertical feed planker; 9 is grinding electric main shaft; 10 is emery wheel; 11 is the disc milling cutter assembly; 12 is NC rotary table; 13 is workbench; 14 is the Y-axis feed system; 15 is the table feed slide; 16 is lathe bed; 17 is the X-axis feed system.
The specific embodiment
Be further to understand utility model content of the present utility model, Characteristic, by following examples and cooperate description of drawings as follows:
A kind of numerical control tool grinder for dish cutting plate for milling cutters sharpening, comprise lathe bed 16, column 7, horizontal work level, vertical workbench, NC rotary table 12, vertical feed planker 8, grinding electric main shaft 9, horizontal work level and vertical workbench form cross sliding table structure and are assemblied on the lathe bed 16, NC rotary table 12 tilts to be assemblied on the horizontal work level, and disc milling cutter to be ground is installed on the positioning core axle that is connected with NC rotary table 12; Column 7 places the rear side of lathe bed 16, the grinding electric main shaft 9 that column 7 front guide rails are equipped with vertical feed planker 8 and are connected with vertical feed planker 8, and grinding electric main shaft 9 horizontal levels are installed.Be convenient to keep between emery wheel and the disc milling cutter angle of suitable grinding.
Disc milling cutter is comprised of dish type cutter hub 1, blade dog screw 2, carbide chip 3, locking wedge block 4, lock-screw 5 among Fig. 1, utilizes the middle hole of cutterhead to cooperate with cutter spindle and supports cutter, side keyway transmitting torque.During actual the use, carbide chip 3 is contained in the cutter groove of dish type cutter hub 1, and determines the installation site of blade on cutter hub by blade dog screw 2; Locking wedge block 4 is pressed in carbide chip 3 in the cutter groove, by lock-screw 5 locking wedge blocks, so that blade is fixed in the cutter groove.
Column 7 fronts are provided with Z axis feed system 6, Z axis feed system 6 comprises the Z axis line slideway, vertical feed planker 8 is fixed on the Z axis line slideway of Z axis feed system 6, the feed screw nut seat of vertical feed planker 8 inside links to each other with Z axis feed system 6, Z axis driven by servomotor precision ball screw pair of nut rotation by Z axis feed system 6 promotes vertical feed planker 8 and makes the Z-direction traveling priority.Be equipped with grinding electric main shaft 9 at vertical feed planker 8, the axis of grinding electric main shaft 9 and X-axis utilize the grinding wheel chuck of electric front-end of spindle that emery wheel 10 is fixed on the grinding electric main shaft 9 in the same way, realize the main motion of emery wheel rotation.
Uniform T-slot is arranged on the workbench, utilize T shape screw that NC rotary table 12 is fixed on the workbench 13, NC rotary table is in tilted layout to satisfy the contact angle needs of emery wheel and workpiece, and realizes that the calibration of the different blades of grinding disc milling cutter needs.Be provided with an alignment pin in the middle of the numerical control rotating platform, the location that utilizes this alignment pin and disc milling cutter 11 upper surface keyways to realize cutterhead determines to treat that the space geometry between sharpening sheet and the emery wheel concerns.
Operation principle of the present utility model:
Lathe start, X Y Z C axle return reference point, set up lathe coordinate system.
Carbide chip to be ground is assembled on the cutterhead, and the endoporus of recycling cutterhead and side keyway location to NC rotary table, are set up the geometry site of disc milling cutter in lathe coordinate system with the cutterhead integral installation.Unclamp the grinding wheel chuck of electric main shaft 9 front ends, the CBN emery wheel is assemblied on the grinding electric main shaft.
The relevant parameter of blade to be ground is input in the special-purpose software, utilizes the instantaneous contact line that calculates cutter and workpiece helicoid without instantaneous reverse envelope algorithm, can try to achieve the two-dimensional discrete coordinate expression-form that grinding wheel spindle cuts shape by instantaneous contact line.Utilize special-purpose rearmounted process software that this discrete coordinate is transformed in the lathe coordinate system, and utilize the cutter radius compensation algorithm the discrete dot matrix in the lathe coordinate system to be biased to the cutter spacing control point of CBN emery wheel.Recycling G code generator, the G code program groups that becomes machine tool numerical control system to identify discrete cutter location matrix representation, and be input in the machine tool numerical control system.
Utilize the automatic operational mode of lathe, start the rotation of CBN emery wheel, and realize X, Z two-axle interlocking according to the G code program, utilize the discrete point position control CBN grinding wheel movement track in the G code, envelope goes out the molded line of blade.After the complete blade profile of tooth of every mill, the turntable automatic indexing is finished the grinding of next blade again to next blade by said procedure.Repeat said process, until ground all blades.
The anterior angle of disc milling cutter blade is generally got zero degree, so the tooth shape reconditioning is the curve in the two dimensional surface; And blade relief must get on the occasion of, interfere otherwise cutting can occur.The size of blade relief is often according to the material that is cut, and the different factors such as manufacturing procedure are determined.For grinding goes out blade relief shown in Figure 3, need to will be offset a segment distance D in Y direction between the emery wheel centre of gyration and the cutter rake face, varying in size of this offset distance D can realize the grinding of different relief angle a.The utility model is derived relation between tool clearance and the emery wheel offset distance according to the emery wheel curvature relationship, utilizes the mobile back-angle grinding of realizing of lathe Y-axis.
Embodiment recited above is described preferred embodiment of the present utility model; be not that design of the present utility model and scope are limited; do not breaking away under the utility model design concept prerequisite; common engineers and technicians make the technical solution of the utility model in this area various modification and improvement; all should fall into protection domain of the present utility model, the technology contents that the utility model is asked for protection all is documented in claims.
Claims (5)
1. numerical control tool grinder that is used for dish cutting plate for milling cutters sharpening, it is characterized in that comprising lathe bed (16), column (7), horizontal work level, vertical workbench, NC rotary table (12), vertical feed planker (8), grinding electric main shaft (9), horizontal work level and vertical workbench form cross sliding table structure and are assemblied on the lathe bed (16), NC rotary table (12) tilts to be assemblied on the horizontal work level, and disc milling cutter to be ground is installed on the positioning core axle that is connected with NC rotary table (12); Column (7) places the rear side of lathe bed (16), the grinding electric main shaft (9) that column (7) front guide rail is equipped with vertical feed planker (8) and is connected with vertical feed planker (8), and grinding electric main shaft (9) horizontal level is installed.
2. the numerical control tool grinder for dish cutting plate for milling cutters sharpening according to claim 1, it is characterized in that described disc milling cutter is comprised of dish type cutter hub (1), blade dog screw (2), carbide chip (3), locking wedge block (4), lock-screw (5), carbide chip (3) is contained in the cutter groove of dish type cutter hub (1), and determines the installation site of blade on cutter hub by blade dog screw (2); Locking wedge block (4) is pressed in carbide chip (3) in the cutter groove, by lock-screw (5) locking wedge block, so that blade is fixed in the cutter groove.
3. the numerical control tool grinder for dish cutting plate for milling cutters sharpening according to claim 1, it is characterized in that described column (7) front is provided with Z axis feed system (6), Z axis feed system (6) comprises the Z axis line slideway, vertical feed planker (8) is fixed on the Z axis line slideway of Z axis feed system (6), the inner feed screw nut seat of vertical feed planker (8) links to each other with Z axis feed system (6), Z axis driven by servomotor precision ball screw pair of nut rotation by Z axis feed system (6) promotes vertical feed planker (8) and makes the Z-direction traveling priority.Be equipped with grinding electric main shaft (9) at vertical feed planker (8), the axis of grinding electric main shaft (9) and X-axis utilize the grinding wheel chuck of electric front-end of spindle that emery wheel (10) is fixed on the grinding electric main shaft (9) in the same way, realize the main motion of emery wheel rotation.
4. the numerical control tool grinder for dish cutting plate for milling cutters sharpening according to claim 1, it is characterized in that described bed piece (16) fixes ground by iron gasket for machine tool and fot screw, bed piece (16) is provided with X-axis feed system (17), X-axis feed system (17) comprises the X-direction line slideway, be fixed with table feed slide (15) at the X-axis line slideway, the feed screw nut seat of table feed slide (15) bottom links to each other with X-axis feed system (17), by the rotation of X-axis driven by servomotor precision ball screw pair of nut, push work platform feeding slide (15) is made the X-direction traveling priority.
5. the numerical control tool grinder for dish cutting plate for milling cutters sharpening according to claim 1, it is characterized in that described table feed slide (15) is provided with Y-axis feed system (14), Y-axis feed system (14) comprises the Y direction line slideway, workbench (13) is fixed on the Y-axis line slideway, the feed screw nut seat of workbench (13) bottom links to each other with Y-axis feed system (14), by the rotation of Y-axis driven by servomotor precision ball screw pair of nut, push work platform is made the Y direction traveling priority.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202783981U CN202726651U (en) | 2012-06-14 | 2012-06-14 | Numerical control tool grinder used for sharpening blade of disc milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012202783981U CN202726651U (en) | 2012-06-14 | 2012-06-14 | Numerical control tool grinder used for sharpening blade of disc milling cutter |
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| CN202726651U true CN202726651U (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012202783981U Expired - Fee Related CN202726651U (en) | 2012-06-14 | 2012-06-14 | Numerical control tool grinder used for sharpening blade of disc milling cutter |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717308A (en) * | 2012-06-14 | 2012-10-10 | 南京工大数控科技有限公司 | Numerical control tool grinder used for grinding of disc milling cutter blade |
| CN104858746A (en) * | 2015-05-13 | 2015-08-26 | 泰兴市晨光高新技术开发有限公司 | Nut machining device |
| CN108838749A (en) * | 2018-07-17 | 2018-11-20 | 桐乡市三精自动化科技有限公司 | Equipment for processing wheel hub knife |
| CN111347307A (en) * | 2020-03-10 | 2020-06-30 | 广东博智林机器人有限公司 | Polishing cutter disc and polishing machine |
| CN112388403A (en) * | 2020-09-28 | 2021-02-23 | 广东研基精密五金有限公司 | Numerical control grinding machine gulleting machine |
-
2012
- 2012-06-14 CN CN2012202783981U patent/CN202726651U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717308A (en) * | 2012-06-14 | 2012-10-10 | 南京工大数控科技有限公司 | Numerical control tool grinder used for grinding of disc milling cutter blade |
| CN104858746A (en) * | 2015-05-13 | 2015-08-26 | 泰兴市晨光高新技术开发有限公司 | Nut machining device |
| CN108838749A (en) * | 2018-07-17 | 2018-11-20 | 桐乡市三精自动化科技有限公司 | Equipment for processing wheel hub knife |
| CN111347307A (en) * | 2020-03-10 | 2020-06-30 | 广东博智林机器人有限公司 | Polishing cutter disc and polishing machine |
| CN112388403A (en) * | 2020-09-28 | 2021-02-23 | 广东研基精密五金有限公司 | Numerical control grinding machine gulleting machine |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130213 Termination date: 20150614 |
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| EXPY | Termination of patent right or utility model |