CN109352043B - Machining process for eliminating section difference in plane milling process when equipment has positioning error - Google Patents
Machining process for eliminating section difference in plane milling process when equipment has positioning error Download PDFInfo
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- CN109352043B CN109352043B CN201811359057.5A CN201811359057A CN109352043B CN 109352043 B CN109352043 B CN 109352043B CN 201811359057 A CN201811359057 A CN 201811359057A CN 109352043 B CN109352043 B CN 109352043B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/13—Surface milling of plates, sheets or strips
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/60—Roughing
- B23C2220/605—Roughing and finishing
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Abstract
The invention discloses a processing technology for eliminating the section difference when a plane is milled when equipment has a positioning error, which comprises the following steps: a) selecting a high-precision four-axis linkage full-closed-loop horizontal machining center and adopting
A cutter head and a blade; b) the workpiece fixing table is installed and leveled; c) rough milling; d) semi-finish milling; e) fine milling; f) trimming, and the like; compared with the prior art, the large-plane smooth and bright surface can be ensured, the hand feeling is not stepped, and the appearance meets the requirements.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of machining, in particular to a machining process for eliminating a section difference when a plane is milled when equipment has a positioning error.
[ background of the invention ]
The precision requirement on a large plane is extremely high, the flatness form and position tolerance of the large plane is 0.02mm, and the whole plane is required to have no joint tool section difference after being processed by a face milling cutter. As the material is nodular cast iron QT400-18, the horizontal precision of equipment installation and fixation cannot be influenced by completely eliminating the fine tool connecting section difference on a large plane. The requirement on visual appearance is also increasing day by day, and the requirement is that the processed plane is smooth, uniform in color and luster and free of mirror surface effect, but the processed knife line is neat and has no disorder line.
The technical problem to be solved by the invention is to provide a processing technology for eliminating the section difference during plane milling when the equipment has a certain positioning error, and when the equipment precision cannot be completely met, the section difference during tool connecting is eliminated through technological compensation, so that the smoothness and brightness of a large plane are ensured, the hand feeling is not stepped, and the appearance meets the requirements.
[ summary of the invention ]
The invention aims to solve the problems in the prior art, and provides a processing technology for eliminating the section difference when a plane is milled when equipment has a positioning error, so that the smoothness and the brightness of a large plane can be ensured, the hand feeling is free from the section difference, and the appearance meets the requirements.
In order to achieve the purpose, the invention provides a processing technology for eliminating the section difference when a plane is milled when equipment has a positioning error, which comprises the following steps:
a) selecting a high-precision four-axis linkage full-closed-loop horizontal machining center and adopting
A cutter head and a blade;
b) installing and leveling a workpiece fixing table: the workpiece fixing mechanism comprises a plurality of supporting mechanisms, a workpiece fixing table, a pressing plate, a mandrel, a cross rod, two sliding mechanisms and two dial indicators, wherein the supporting mechanisms are fixed on a workbench of a horizontal machining center through fastening bolts, one ends, far away from the workbench, of the supporting mechanisms are located on the same plane through the leveling mechanism, the workpiece fixing table is fixedly mounted on the supporting mechanisms through the fastening bolts, the workpiece is fixed on the workpiece fixing table through the pressing plate, the leveling mechanism comprises the mandrel, the cross rod, two sliding mechanisms and two dial indicators, the lower end of the mandrel is provided with the cross rod, the sliding mechanisms are respectively provided with the sliding mechanisms on the cross rods on two sides of the mandrel, the sliding mechanisms respectively comprise sliding sleeves, fixed sliding rods, springs and connecting seats, the sliding sleeves are sleeved on the cross rod, the dial indicators are arranged on front wall bodies of the sliding sleeves, the fixed sliding rods are arranged on rear wall bodies of the sliding sleeves in a penetrating mode, the rear The rear end of the cross rod is provided with a positioning sliding chute matched with the front end of the fixed sliding rod;
c) rough milling: distributing rough milling cutting amount according to the machining allowance, and machining by three cutters, wherein 5mm is roughly milled off by a first cutter, 4mm is roughly milled off by a second cutter, 2mm is roughly milled off by a third cutter, the linear speed of the cutting is 80-110 m/min, and the feeding of each tooth of the cutter is 0.2-0.35 mm per rotation;
d) semi-finish milling: semi-finish milling residue is 0.2mm, and the cutting linear speed is 130-150 m/min;
e) fine milling: a finish milling surface is 0.05mm, and the cutting linear speed is 190-210 m/min; when the milling cutter is used for cutting, the milling cutter can cut left to right or from bottom to top; the reciprocating cutting is not possible, the Z direction of the milling cutter is fixed, and the cutting motion is only X, Y directions.
f) Finishing: the polishing edge is adopted for processing, the cutting amount is 0.01-0.03 mm, the linear speed is 230-250 m/min, the feed per tooth per rotation is 0.7mm, and during polishing cutting, the cutting can be performed from left to right or from bottom to top; the reciprocating cutting is not possible, the Z direction of the smoothing edge is fixed, and the cutting motion is only X, Y direction motion.
Preferably, the supporting mechanism in the step b) comprises a lower base, a sleeve body, a screw rod body, an upper base and a fastening nut, the lower base is fixedly connected with the workbench through the fastening bolt, the sleeve body is arranged at the upper end of the lower base, the screw rod body connected with threads is arranged in the sleeve body, the fastening nut pressed on the upper end of the sleeve body is arranged on the screw rod body, the upper end of the screw rod body is provided with the upper base, and the upper base is fixedly connected with the workpiece fixing table through the fastening bolt.
The linear cutting speed in the step c) is 90m/min, and the feeding speed of each tooth of the cutter is 0.25 mm.
The linear cutting speed in the step d) is 140 m/min.
The linear cutting speed in the step e) is 200 m/min.
The cutting amount in the step f) is 0.02mm, the linear speed is 240m/min, a cutting mode from left to right is adopted, after each cutting is finished, the finishing edge bypasses the side edge of the workpiece and returns to the left front of the workpiece again to prepare for next cutting, and the finishing edge is provided with one blade.
The invention has the beneficial effects that: the leveling mechanism and the supporting mechanism are matched to ensure the horizontal precision of the workpiece fixing table, and the processing technology of the leveling mechanism and the supporting mechanism can ensure the smoothness and brightness of a large plane, no section difference in hand feeling and the appearance meeting the requirements.
The features and advantages of the present invention will be described in detail by embodiments in conjunction with the accompanying drawings.
[ description of the drawings ]
FIG. 1 is a schematic view of a structure in which a support mechanism is mounted on a table;
FIG. 2 is a side view of the support mechanism mounted on the table;
FIG. 3 is a schematic diagram of the construction of the leveling mechanism;
FIG. 4 is a side view of the leveling mechanism.
In the figure: 10-a workbench, 11-a lower base, 12-a sleeve body, 13-a screw rod body, 14-an upper base, 15-a fastening nut, 16-a workpiece fixing table, 21-a mandrel, 22-a cross rod, 23-a sliding mechanism, 24-a dial indicator, 231-a sliding sleeve, 232-a fixed sliding rod, 233-a spring and 234-a connecting seat.
[ detailed description ] embodiments
Example 1
The invention relates to a processing technology for eliminating the section difference when a plane is milled when equipment has positioning errors, which comprises the following steps:
a) selecting a high-precision four-axis linkage full-closed-loop horizontal machining center and adopting
A cutter head and a blade;
b) installing and leveling a workpiece fixing table: fixing a plurality of supporting mechanisms on a workbench 10 of a horizontal machining center through fastening bolts, enabling one ends of the supporting mechanisms far away from the workbench 10 to be located on the same plane through a leveling mechanism, then fixedly installing a workpiece fixing table on the supporting mechanisms through the fastening bolts, and then fixing the workpiece on a workpiece fixing table 16 through a pressing plate, wherein the leveling mechanism comprises a mandrel 21, a cross rod 22, two sliding mechanisms 23 and two dial indicators 24, the cross rod 22 is arranged at the lower end of the mandrel 21, the sliding mechanisms 23 are respectively arranged on the cross rods 22 at two sides of the mandrel 21, the sliding mechanisms 23 are respectively provided with the dial indicators 24, the sliding mechanisms 23 comprise sliding sleeves 231, fixed sliding rods 232, springs 233 and connecting seats 234, the sliding sleeves 231 are sleeved on the cross rods 22, the dial indicators 24 are arranged on the front wall body of the sliding sleeves 231, and the fixed sliding rods 232 are penetrated through the rear wall body of the sliding sleeves 231, the rear end of the fixed slide rod 232 is provided with a connecting seat 234, the fixed slide rod 232 between the connecting seat 234 and the sliding sleeve 231 is provided with a spring 233, two ends of the spring 233 are respectively fixedly connected with the connecting seat 234 and the sliding sleeve 231, the rear end of the cross rod 22 is provided with a positioning chute 25 matched with the front end of the fixed slide rod 232, the supporting mechanism comprises a lower base 11, a sleeve body 12, a screw body 13, an upper base 14 and a fastening nut 15, the lower base 11 is fixedly connected with the workbench 10 through the fastening bolt, the upper end of the lower base 11 is provided with the sleeve body 12, the sleeve body 12 is internally provided with the screw body 13 in threaded connection, the screw body 13 is provided with the fastening nut 15 pressed on the upper end of the sleeve body 12, the upper end of the screw body 13 is provided with an upper base 14, and the upper base 14;
c) rough milling: distributing rough milling cutting amount according to the machining allowance, and machining by three cutters, wherein 5mm is roughly milled off by a first cutter, 4mm is roughly milled off by a second cutter, 2mm is roughly milled off by a third cutter, the linear speed of cutting is 80m/min, and the feeding of each tooth of the cutter is 0.35mm per rotation;
d) semi-finish milling: semi-finish milling residue is 0.2mm, and the cutting linear velocity is 130 m/min;
e) fine milling: a finish milling surface is 0.05mm, and the cutting linear velocity is 190 m/min; when the milling cutter is used for cutting, the milling cutter can cut left to right or from bottom to top; the reciprocating cutting is not possible, the Z direction of the milling cutter is fixed, and the cutting motion is only X, Y directions.
f) Finishing: the method is characterized in that a finishing edge is adopted for processing, the cutting quantity is 0.01mm, the linear speed is 250m/min, the feed per tooth is 0.7mm, a cutting mode from left to right is adopted during finishing cutting, after each cutting is finished, the finishing edge bypasses the side edge of a workpiece and returns to the left front of the workpiece again to prepare the next cutting, and a blade of the finishing edge is one.
Example 2
The invention relates to a processing technology for eliminating the section difference when a plane is milled when equipment has positioning errors, which comprises the following steps:
a) selecting a high-precision four-axis linkage full-closed-loop horizontal machining center and adopting
A cutter head and a blade;
b) installing and leveling a workpiece fixing table: fixing a plurality of supporting mechanisms on a workbench 10 of a horizontal machining center through fastening bolts, enabling one ends of the supporting mechanisms far away from the workbench 10 to be located on the same plane through a leveling mechanism, then fixedly installing a workpiece fixing table on the supporting mechanisms through the fastening bolts, and then fixing the workpiece on a workpiece fixing table 16 through a pressing plate, wherein the leveling mechanism comprises a mandrel 21, a cross rod 22, two sliding mechanisms 23 and two dial indicators 24, the cross rod 22 is arranged at the lower end of the mandrel 21, the sliding mechanisms 23 are respectively arranged on the cross rods 22 at two sides of the mandrel 21, the sliding mechanisms 23 are respectively provided with the dial indicators 24, the sliding mechanisms 23 comprise sliding sleeves 231, fixed sliding rods 232, springs 233 and connecting seats 234, the sliding sleeves 231 are sleeved on the cross rods 22, the dial indicators 24 are arranged on the front wall body of the sliding sleeves 231, and the fixed sliding rods 232 are penetrated through the rear wall body of the sliding sleeves 231, the rear end of the fixed slide rod 232 is provided with a connecting seat 234, the fixed slide rod 232 between the connecting seat 234 and the sliding sleeve 231 is provided with a spring 233, two ends of the spring 233 are respectively fixedly connected with the connecting seat 234 and the sliding sleeve 231, the rear end of the cross rod 22 is provided with a positioning chute 25 matched with the front end of the fixed slide rod 232, the supporting mechanism comprises a lower base 11, a sleeve body 12, a screw body 13, an upper base 14 and a fastening nut 15, the lower base 11 is fixedly connected with the workbench 10 through the fastening bolt, the upper end of the lower base 11 is provided with the sleeve body 12, the sleeve body 12 is internally provided with the screw body 13 in threaded connection, the screw body 13 is provided with the fastening nut 15 pressed on the upper end of the sleeve body 12, the upper end of the screw body 13 is provided with an upper base 14, and the upper base 14;
c) rough milling: distributing rough milling cutting amount according to the machining allowance, and machining by three cutters, wherein 5mm is roughly milled off by a first cutter, 4mm is roughly milled off by a second cutter, 2mm is roughly milled off by a third cutter, the linear speed of cutting is 90m/min, and the feeding of each tooth of the cutter is 0.25mm per rotation;
d) semi-finish milling: semi-finish milling residue is 0.2mm, and the cutting linear velocity is 140 m/min;
e) fine milling: a finish milling surface is 0.05mm, and the cutting linear speed is 200 m/min; when the milling cutter is used for cutting, the milling cutter can cut left to right or from bottom to top; the reciprocating cutting is not possible, the Z direction of the milling cutter is fixed, and the cutting motion is only X, Y directions.
f) Finishing: the method is characterized in that a finishing edge is adopted for processing, the cutting quantity is 0.02mm, the linear speed is 240m/min, the feed per tooth is 0.7mm, a cutting mode from left to right is adopted during finishing cutting, after each cutting is finished, the finishing edge bypasses the side edge of a workpiece and returns to the left front of the workpiece again to prepare the next cutting, and a blade of the finishing edge is one.
Example 3
a) Selecting a high-precision four-axis linkage full-closed-loop horizontal machining center and adopting
A cutter head and a blade;
b) installing and leveling a workpiece fixing table: fixing a plurality of supporting mechanisms on a workbench 10 of a horizontal machining center through fastening bolts, enabling one ends of the supporting mechanisms far away from the workbench 10 to be located on the same plane through a leveling mechanism, then fixedly installing a workpiece fixing table on the supporting mechanisms through the fastening bolts, and then fixing the workpiece on a workpiece fixing table 16 through a pressing plate, wherein the leveling mechanism comprises a mandrel 21, a cross rod 22, two sliding mechanisms 23 and two dial indicators 24, the cross rod 22 is arranged at the lower end of the mandrel 21, the sliding mechanisms 23 are respectively arranged on the cross rods 22 at two sides of the mandrel 21, the sliding mechanisms 23 are respectively provided with the dial indicators 24, the sliding mechanisms 23 comprise sliding sleeves 231, fixed sliding rods 232, springs 233 and connecting seats 234, the sliding sleeves 231 are sleeved on the cross rods 22, the dial indicators 24 are arranged on the front wall body of the sliding sleeves 231, and the fixed sliding rods 232 are penetrated through the rear wall body of the sliding sleeves 231, the rear end of the fixed slide rod 232 is provided with a connecting seat 234, the fixed slide rod 232 between the connecting seat 234 and the sliding sleeve 231 is provided with a spring 233, two ends of the spring 233 are respectively fixedly connected with the connecting seat 234 and the sliding sleeve 231, the rear end of the cross rod 22 is provided with a positioning chute 25 matched with the front end of the fixed slide rod 232, the supporting mechanism comprises a lower base 11, a sleeve body 12, a screw body 13, an upper base 14 and a fastening nut 15, the lower base 11 is fixedly connected with the workbench 10 through the fastening bolt, the upper end of the lower base 11 is provided with the sleeve body 12, the sleeve body 12 is internally provided with the screw body 13 in threaded connection, the screw body 13 is provided with the fastening nut 15 pressed on the upper end of the sleeve body 12, the upper end of the screw body 13 is provided with an upper base 14, and the upper base 14;
c) rough milling: distributing rough milling cutting amount according to the machining allowance, and machining by three cutters, wherein 5mm is roughly milled off by a first cutter, 4mm is roughly milled off by a second cutter, 2mm is roughly milled off by a third cutter, the linear speed of the cutting is 110m/min, and the feeding of each tooth of the cutter is 0.2mm per rotation;
d) semi-finish milling: semi-finish milling residue is 0.2mm, and the cutting linear velocity is 150 m/min;
e) fine milling: a finish milling surface is 0.05mm, and the cutting linear speed is 210 m/min; when the milling cutter is used for cutting, the milling cutter can cut left to right or from bottom to top; the reciprocating cutting is not possible, the Z direction of the milling cutter is fixed, and the cutting motion is only X, Y directions.
f) Finishing: the method is characterized in that a finishing edge is adopted for processing, the cutting quantity is 0.03mm, the linear speed is 230m/min, the feed per tooth is 0.7mm, a cutting mode from left to right is adopted during finishing cutting, after each cutting is finished, the finishing edge bypasses the side edge of a workpiece and returns to the left front of the workpiece again to prepare the next cutting, and a blade of the finishing edge is one.
Referring to fig. 1, 2, 3 and 4, when the workpiece fixing table is installed and adjusted, the lower base 11 is fixed on the workbench 10 through bolts, then the mandrel 21 is fixed on a spindle of a horizontal machining center, the sliding mechanism 23 is forced to slide to drive the dial indicator 24 to perform position adjustment, so that the dial indicator 24 can pass through the upper base 14, then the spindle is rotated by hand to drive the mandrel 21 to rotate, the mandrel 21 drives the sliding mechanism 23 through the cross rod 22, the sliding mechanism 23 drives the dial indicator 24 to rotate, when the dial indicator 24 passes through the upper base 14, reading is performed, then the support mechanism is adjusted according to the reading value, so that the reading of the dial indicator 24 on each upper base 14 is the same, the upper ends of the upper bases 14 are located on the same plane, and then the workpiece fixing table 16 is fixed on the upper bases 14 through bolts. When the supporting mechanism is adjusted, the fastening nut 15 is loosened, then the upper base 14 is rotated anticlockwise or clockwise to drive the screw rod body 13 to rotate and move downwards or upwards, and after the adjustment is completed, the fastening nut 15 is fastened and pressed on the sleeve body 12.
The above embodiments are illustrative of the present invention, and are not intended to limit the present invention, and any simple modifications of the present invention are within the scope of the present invention.
Claims (6)
1. A machining process for eliminating the section difference of a milling plane when equipment has a positioning error is characterized in that: the method comprises the following steps:
a) selecting a high-precision four-axis linkage full-closed-loop horizontal machining center and adopting
A cutter head and a blade;
b) installing and leveling a workpiece fixing table: fixing a plurality of supporting mechanisms on a workbench (10) of a horizontal machining center through fastening bolts, enabling one ends of the supporting mechanisms far away from the workbench (10) to be located on the same plane through a leveling mechanism, then fixedly installing a workpiece fixing table on the supporting mechanisms through the fastening bolts, and then fixing the workpiece on a workpiece fixing table (16) through a pressing plate, wherein the leveling mechanism comprises a mandrel (21), a cross rod (22), two sliding mechanisms (23) and two dial indicators (24), the cross rod (22) is arranged at the lower end of the mandrel (21), the sliding mechanisms (23) are respectively arranged on the cross rods (22) at two sides of the mandrel (21), the sliding mechanisms (23) are respectively provided with the dial indicators (24), the sliding mechanisms (23) comprise sliding sleeves (231), fixed sliding rods (232), springs (233) and connecting seats (234), and the sliding sleeves (231) are sleeved on the cross rods (22), a dial indicator (24) is arranged on the front wall body of the sliding sleeve (231), a fixed sliding rod (232) penetrates through the rear wall body of the sliding sleeve (231), a connecting seat (234) is arranged at the rear end of the fixed sliding rod (232), a spring (233) with two ends respectively fixedly connected with the connecting seat (234) and the sliding sleeve (231) is arranged on the fixed sliding rod (232) between the connecting seat (234) and the sliding sleeve (231), and a positioning sliding groove (25) matched with the front end of the fixed sliding rod (232) is arranged at the rear end of the cross rod (22);
c) rough milling: distributing rough milling cutting amount according to the machining allowance, and machining by three cutters, wherein 5mm is roughly milled off by a first cutter, 4mm is roughly milled off by a second cutter, 2mm is roughly milled off by a third cutter, the linear speed of the cutting is 80-110 m/min, and the feeding of each tooth of the cutter is 0.2-0.35 mm per rotation;
d) semi-finish milling: semi-finish milling residue is 0.2mm, and the cutting linear speed is 130-150 m/min;
e) fine milling: a finish milling surface is 0.05mm, and the cutting linear speed is 190-210 m/min; when the milling cutter is used for cutting, the milling cutter can cut left to right or from bottom to top; the reciprocating cutting is not available, the Z direction of the milling cutter is fixed, and the cutting motion is only X, Y direction motion;
f) finishing: the polishing edge is adopted for processing, the cutting amount is 0.01-0.03 mm, the linear speed is 230-250 m/min, the feed per tooth per rotation is 0.7mm, and during polishing cutting, the cutting can be performed from left to right or from bottom to top; the reciprocating cutting is not possible, the Z direction of the smoothing edge is fixed, and the cutting motion is only X, Y direction motion.
2. The machining process for eliminating the section difference in the plane milling process when the equipment has the positioning error as claimed in claim 1, wherein: the supporting mechanism in the step b) comprises a lower base (11), a sleeve body (12), a screw rod body (13), an upper base (14) and a fastening nut (15), the lower base (11) is fixedly connected with the workbench (10) through the fastening bolt, the upper end of the lower base (11) is provided with the sleeve body (12), the screw rod body (13) connected with threads is arranged in the sleeve body (12), the fastening nut (15) pressed on the upper end of the sleeve body (12) is arranged on the screw rod body (13), the upper end of the screw rod body (13) is provided with the upper base (14), and the upper base (14) is fixedly connected with a workpiece fixing platform (16) through the fastening bolt.
3. The machining process for eliminating the section difference in the plane milling process when the equipment has the positioning error as claimed in claim 1, wherein: the linear cutting speed in the step c) is 90m/min, and the feeding speed of each tooth of the cutter is 0.25 mm.
4. The machining process for eliminating the section difference in the plane milling process when the equipment has the positioning error as claimed in claim 1, wherein: the linear cutting speed in the step d) is 140 m/min.
5. The machining process for eliminating the section difference in the plane milling process when the equipment has the positioning error as claimed in claim 1, wherein: the linear cutting speed in the step e) is 200 m/min.
6. A process for eliminating the step difference in milling plane with the equipment having positioning error as claimed in any one of claims 1 to 5, wherein: the cutting amount in the step f) is 0.02mm, the linear speed is 240m/min, a cutting mode from left to right is adopted, after each cutting is finished, the finishing edge bypasses the side edge of the workpiece and returns to the left front of the workpiece again to prepare for next cutting, and the finishing edge is provided with one blade.
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| CN110193733B (en) * | 2019-07-01 | 2024-05-07 | 海盐永丰精密五金有限公司 | Convenient to use's strutting arrangement is used in middle stage body processing of high-speed precision punching machine |
| CN110281567B (en) * | 2019-07-01 | 2022-02-15 | 海盐永丰精密五金有限公司 | Improved leveling device of supporting device for machining middle platform body of punch press |
| CN110281568B (en) * | 2019-07-01 | 2022-02-15 | 海盐永丰精密五金有限公司 | Well platform body processing of high-speed precision punch is with effectual strutting arrangement of leveling |
| CN110281569B (en) * | 2019-07-01 | 2021-08-10 | 海盐永丰精密五金有限公司 | Multi-functional levelling device of strutting arrangement is used in well platform body processing of punch press |
| CN111730112B (en) * | 2020-05-27 | 2021-09-07 | 东南大学 | Automatic milling device for high point of machine tool guide rail |
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| CN109352043A (en) | 2019-02-19 |
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