CN113478016B - Device capable of improving quantitative cutting precision of alloy bar - Google Patents

Device capable of improving quantitative cutting precision of alloy bar Download PDF

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Publication number
CN113478016B
CN113478016B CN202110655556.4A CN202110655556A CN113478016B CN 113478016 B CN113478016 B CN 113478016B CN 202110655556 A CN202110655556 A CN 202110655556A CN 113478016 B CN113478016 B CN 113478016B
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cut
alloy bar
alloy
unpowered
weight
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CN113478016A (en
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谢君
侯桂臣
舒德龙
王振江
荀淑玲
周亦胄
孙晓峰
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Institute of Metal Research of CAS
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D79/00—Methods, machines, or devices not covered elsewhere, for working metal by removal of material
    • 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
    • B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
    • B23Q17/24—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves
    • B23Q17/2452—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces
    • B23Q17/2471—Arrangements for observing, indicating or measuring on machine tools using optics or electromagnetic waves for measuring features or for detecting a condition of machine parts, tools or workpieces of workpieces
    • 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
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/001—Lateral transport of long workpieces
    • 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
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/006—Ejectors
    • 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
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/05—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of roller-ways
    • B23Q7/055—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of roller-ways some of the rollers being driven
    • 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
    • B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
    • B23Q7/12—Sorting arrangements

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  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Accessories And Tools For Shearing Machines (AREA)

Abstract

The invention relates to the field of high-temperature alloy processing, in particular to a device capable of improving quantitative cutting precision of alloy bars. The feeding device of the device is characterized in that an axial positioning baffle is arranged on one side of an unpowered slope material channel, and a pneumatic stopping and distributing device corresponding to alloy bars to be cut is arranged at the lower end of the unpowered slope material channel; the measuring device comprises a length measuring device, a weight measuring device and a diameter measuring instrument, wherein: a length measuring device is arranged at the position, corresponding to the unpowered slope material channel, of the pneumatic stopping and distributing device and outside one end, far away from the axial positioning baffle, of the alloy bar to be cut; and a weight measuring device is arranged in the direction that the alloy bar to be cut rolls away from the unpowered slope material channel due to the dead weight of the alloy bar, and a diameter gauge is arranged in the direction that the alloy bar to be cut slides away from the weight measuring device. The invention improves the precision and the production efficiency of subsequent quantitative cutting, saves energy and can ensure the consistency of the weight of the materials for casting the alloy blade.

Description

Device capable of improving quantitative cutting precision of alloy bar
The technical field is as follows:
the invention relates to the field of high-temperature alloy processing, in particular to a device capable of improving quantitative cutting precision of alloy bars.
Background art:
the high-temperature alloy is a key material for manufacturing hot end parts in the fields of aviation, aerospace, automobiles, petrifaction and the like, the high-temperature alloy master alloy is a material source of the hot end parts of the advanced power device, and the casting yield and the service reliability of a final casting are directly influenced by the quality of the high-temperature alloy master alloy. Due to the difference of the structural characteristics of the parts, the required alloy bars to be cut have different weights, and the alloy bars to be cut need to be quantitatively cut and processed for use. Most of the cutting of the master alloy bar stock to be cut in the prior art is fixed-length cutting, namely the outer diameter of the alloy bar stock to be cut is determined, and the fixed-length is calculated according to the weight of the required material section and the theoretical density.
In the process of preparing the master alloy, the temperature of the die is far lower than the temperature of the alloy melt, so that the alloy liquid close to the surface of the die is rapidly solidified, and in the subsequent cooling process, due to insufficient feeding, the defects of string-shaped shrinkage cavities, shrinkage porosity and the like are formed on the axis of the core part of the alloy bar to be cut of the master alloy. Meanwhile, due to the existence of internal defects such as shrinkage porosity, porosity and the like, the theoretical density and the actual density of the alloy bar to be cut are different, millimeter-level errors can also exist in the same batch of alloy bars to be cut or even a single alloy bar to be cut in diameter or length due to the processes such as casting, post-processing polishing and the like, and the accumulation of the errors causes great deviation between the weight of the master alloy obtained after the fixed-length cutting and the initial set value, so that the problems of waste of the master alloy material or inconsistent weight of materials for casting parts and the like are caused. Accordingly, there is a need to provide a method for improving the above phenomenon, reducing the error caused by the sizing process, and improving the precision of the mother alloy sizing cutting.
The invention content is as follows:
in order to overcome the defects in the prior art, the invention aims to provide the device capable of improving the quantitative cutting precision of the alloy bar, so that the precision and the production efficiency of subsequent quantitative cutting are improved, energy is saved, and the consistency of the weight of the casting materials of the alloy blade can be ensured.
The technical solution adopted by the invention is as follows:
a device capable of improving quantitative cutting precision of alloy bars comprises a feeding device and a measuring device, wherein the feeding device is characterized in that an axial positioning baffle is arranged on one side of an unpowered slope material channel, and a pneumatic stopping and distributing device corresponding to the alloy bars to be cut is arranged at the lower end of the unpowered slope material channel; the measuring device comprises a length measuring device, a weight measuring device and a diameter measuring instrument, wherein: a length measuring device is arranged at the position, corresponding to the unpowered slope material channel, of the pneumatic stopping and distributing device and outside one end, far away from the axial positioning baffle, of the alloy bar to be cut; and a weight measuring device is arranged in the direction that the alloy bar to be cut rolls away from the unpowered slope material channel due to the dead weight of the alloy bar, and a diameter gauge is arranged in the direction that the alloy bar to be cut slides away from the weight measuring device.
The device capable of improving the quantitative cutting precision of the alloy bar comprises a feeding device, a feeding device and a conveying device, wherein the feeding device comprises an unpowered slope material channel, an axial positioning baffle, a pneumatic blocking and stopping material distributing device and an unpowered feeding roller, and the feeding device is specifically structurally as follows:
the opposite parallel in both sides that unpowered slope material said is equipped with fixed stop, the back and the baffle leg joint of every fixed stop, the one side that is close to a fixed stop on unpowered slope material is said is equipped with the axial positioning baffle, wait to cut alloy bar and arrange in proper order on the unpowered slope material between axial positioning baffle and another fixed stop says and place, axial positioning baffle and fixed stop all with the axial vertical who waits to cut alloy bar, the axial positioning baffle is controlled along unpowered slope material on waiting to cut alloy bar axial direction and is removed, it stops feed divider to be equipped with pneumatics at the lower one end opening part that unpowered slope material said.
The device capable of improving the quantitative cutting precision of the alloy bars is also provided with an electric push rod, a first linear guide rail parallel to the alloy bars to be cut is arranged in the direction in which the alloy bars to be cut roll away from the unpowered slope material channel due to dead weight, a servo motor is installed on the first linear guide rail, one end of the electric push rod is installed at the output end of the servo motor, and the other end of the electric push rod corresponds to the end, conveyed to the weight measuring device, of the alloy bars to be cut.
The device capable of improving the quantitative cutting precision of the alloy bars and the length measuring device of the alloy bars to be cut comprise an axial cylinder, a linear bearing and a laser range finder, wherein one end of the linear bearing is connected with the output end of the axial cylinder, the pneumatic stop and stop material distribution device corresponds to the unpowered slope material channel, the other end of the linear bearing corresponds to one end of the alloy bars to be cut, the other end of the alloy bars to be cut is in close contact with an axial positioning baffle, and the laser range finder is installed on one side, corresponding to the alloy bars to be cut, of the axial cylinder.
According to the device capable of improving the quantitative cutting precision of the alloy bar, the axial cylinder pushes the end face of the alloy bar to be cut to be propped against the axial positioning baffle plate through the linear bearing, so that axial positioning is completed; measuring the length of the alloy bar to be cut by a laser range finder, wherein the distance from the laser range finder to the end surface of the alloy bar to be cut corresponding to the linear bearing is L Measuring The distance from the laser range finder to the top of the alloy bar to be cut to the axial positioning baffle is L Stator And if so, the length L of the alloy bar to be cut is the difference between the length L and the length L, and the specific calculation formula is as follows:
L＝L stator -L Measuring (1)。
The device capable of improving the quantitative cutting precision of the alloy bars comprises a pneumatic stop material distributing device, an electric push rod, a servo motor, a first linear guide rail, a second linear guide rail, a weight measuring device, a power-driven feeding roller, a power-driven slope material channel, an electric push rod, a first linear guide rail, a second linear guide rail, a third linear guide rail, a fourth linear guide rail, a fifth linear guide rail, a sixth linear guide rail, a seventh linear guide rail, a sixth linear guide rail, a fourth linear guide rail, a sixth linear guide rail, a fifth linear guide rail, a sixth linear guide rail, a fifth linear guide rail, a sixth linear guide rail.
Can improve alloy bar ration cutting accuracy's device, treat weight measurement device that cuts alloy bar, including the platform balance, V type support, bearing roller support and jacking cylinder, the platform balance is installed on the jacking cylinder, the top of platform balance is equipped with V type support, the top of platform balance is equipped with bearing roller support, the top of two V type supports is equipped with and treats the V type breach that cuts alloy bar and correspond, the unpowered feed roll that corresponds with treating to cut alloy bar is evenly installed on the bearing roller support, will measure treating after length through unpowered feed roll and cut alloy bar and catch, treat that to cut alloy bar arranges the top of unpowered feed roll and V type support in.
According to the device capable of improving the quantitative cutting precision of the alloy bar, when the weight is measured, the jacking cylinder drives the platform scale to ascend, the V-shaped support on the platform scale lifts the alloy bar to be cut away from the feeding roller, and the platform scale performs weighing operation; and then the jacking cylinder descends, the alloy bar to be cut returns to the unpowered feeding roller, and the alloy bar is continuously conveyed forwards under the action of the electric push rod.
The device capable of improving the quantitative cutting precision of the alloy bars is characterized in that a diameter measuring instrument is arranged in the conveying direction of the alloy bars to be cut away from the weight measuring device, the diameter measuring instrument is mounted on the carrier roller bracket through a second linear guide rail, the second linear guide rail is perpendicular to the conveying direction of the alloy bars to be cut, and the diameter measuring instrument is in sliding fit with the second linear guide rail; the diameter measuring instrument is arranged at a position which is more than 1m away from the cutting position of the alloy bar to be cut, and the diameter measuring instrument adopts a laser scanning method to finish the diameter d of any specified section of the alloy bar to be cut under the accurate pushing support of a servo feeding system i Measuring (2); the diameter d of the appointed section is measured by a diameter gauge i And the alloy bar to be cut is continuously fed into quantitative cutting equipment for cutting under the action of the electric push rod.
The device capable of improving the quantitative cutting precision of the alloy bar calculates the current weight of the alloy bar to be cut according to the actually measured weight and length of the alloy bar to be cut, combines the initially set weight of the material section, and utilizes the diameter d of each section i Correcting to obtain the actual length of each segment, and finally controlling cutting and blanking in a fixed-length mode, namely cutting and blanking by using the following formula:
L＝G/[ρ′*π*(d/2) 2 ] (2)
L i ＝G i /[ρ′*π*(d i /2) 2 ] (3)
wherein: l is i Is a determined cutting length (m); l is the total length (m) of the alloy bar to be cut measured by the laser range finder; g is the total weight (Kg) of the alloy bar to be cut measured by the platform scale; rho' is the actual density value (Kg/m) of the alloy bar to be cut 3 ) (ii) a d is the average outer diameter value (m) of the alloy bar to be cut; g i The weight (Kg) of the cut material section set by the user; d is a radical of i The outer diameter values (m) of alloy bars to be cut at different sections are obtained; pi is the circumference ratio; calculating an actual density value rho 'from the (2), substituting the actual density value rho' into the (3) to obtain a cutting length, namely a formula (4);
L i ＝[G i *L*(d/2) 2 ]/[G*(d i /2) 2 ] (4)。
by means of the technical scheme, the method for improving the quantitative cutting precision of the master alloy at least has the following advantages:
the invention can realize the placement of a plurality of alloy bars to be cut and the automatic feeding of a single alloy bar, and designs the detection device into the whole feeding system, thereby realizing the automatic measurement of the weight, the length and the diameters of different sections of the alloy bars to be cut, replacing the calculated weight of a theoretical density value with the actual weight of the alloy bars to be cut, and utilizing the diameter d of each section i And correcting to obtain the actual length of each segmentation section, controlling cutting and blanking in a fixed-length mode, and accurately controlling the weight of each section of alloy bar to be cut.
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical solutions of the present invention more clearly understood and to implement them in accordance with the contents of the description, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Description of the drawings:
fig. 1 is a schematic view of the overall structure of a feeding device and a detection device.
Fig. 2 is a top view of the feeding device and the detecting device.
Fig. 3 is a schematic view of a pneumatic lifting weight measuring device.
Fig. 4 is a schematic view of a length measuring device.
In the figure, 1 unpowered slope material way, 2 axial positioning baffle plates, 3 alloy bar materials to be cut, 4 pneumatic blocking and stopping feed divider, 5 diameter measuring instruments, 6 platform scales, 7 axial cylinders, 8 servo motors, 9 unpowered feed rollers, 10V-shaped supports, 11 carrier roller supports, 12 electric push rods, 13 jacking cylinders, 14 linear bearings, 15 laser distance measuring instruments, 16 first linear guide rails, 17 baffle plate supports, 18 fixed baffle plates and 19 second linear guide rails.
The specific implementation mode is as follows:
in order to further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description will be given to the specific implementation, structure, features and effects of the method for improving the machining precision of the alloy circumferential bar according to the present invention with reference to the accompanying drawings and preferred embodiments.
As shown in fig. 1-4, the device capable of improving the quantitative cutting precision of alloy bars of the present invention mainly comprises a feeding device and a measuring device, wherein the feeding device is an unpowered slope material channel 1, one side of the unpowered slope material channel 1 is provided with an axial positioning baffle 2, and the lower end of the unpowered slope material channel 1 is provided with a pneumatic stopping and separating device 4 corresponding to an alloy bar 3 to be cut; the measuring device comprises a length measuring device, a weight measuring device and a diameter measuring instrument, wherein: a length measuring device is arranged on the outer side of one end, far away from the axial positioning baffle 2, of the alloy bar 3 to be cut at the position, corresponding to the unpowered slope material channel 1, of the pneumatic stopping and distributing device 4; a weight measuring device is arranged in the direction that the alloy bar 3 to be cut rolls away from the unpowered slope material channel 1 by self weight, and a diameter gauge is arranged in the direction that the alloy bar 3 to be cut slides away from the weight measuring device.
The feeding device comprises an unpowered slope material channel 1, an axial positioning baffle 2, a pneumatic blocking and stopping material distribution device 4, an unpowered feeding roller 9 and an electric push rod 12, and the feeding device has the following specific structure:
the two sides of the unpowered slope material channel 1 are relatively provided with fixed baffles 18 in parallel, the back of each fixed baffle 18 is connected with a baffle bracket 17, an axial positioning baffle 2 is arranged on one side of the unpowered slope material channel 1 close to one fixed baffle 18, ten alloy bars 3 to be cut can be sequentially arranged on the unpowered slope material channel 1 between the axial positioning baffle 2 and the other fixed baffle 18 at one time, the axial positioning baffle 2 and the fixed baffle 18 are both vertical to the axial direction of the alloy bars 3 to be cut, the axial positioning baffle 2 can move left and right along the unpowered slope material channel 1 in the axial direction of the alloy bars 3 to be cut, can be manually adjusted and locked by a screw, plays a role in positioning and measuring the lengths of alloy bars 3 to be cut in different lengths, the length measuring function of the alloy bars 3 to be cut with different lengths can be adapted by arranging the axial positioning baffle 2. The lower end opening of the unpowered slope material channel 1 is provided with a pneumatic stopping and distributing device 4, the pneumatic stopping and distributing device 4 can be controlled to ascend and descend through an air cylinder at the bottom of the pneumatic stopping and distributing device to distribute materials, and an alloy bar 3 to be cut is separated every time the pneumatic stopping and distributing device 4 descends and ascends.
A first linear guide rail 16 parallel to the alloy bar 3 to be cut is arranged in the direction that the alloy bar 3 to be cut rolls away from the unpowered slope material channel 1 by self weight, a servo motor 8 is installed on the first linear guide rail 16, one end of an electric push rod 12 is installed at the output end of the servo motor 8, and the other end of the electric push rod 12 corresponds to one end of the alloy bar 3 to be cut, which is conveyed to a weight measuring device.
As shown in fig. 4, the length measuring device of the alloy bar 3 to be cut comprises an axial cylinder 7, a linear bearing 14 and a laser range finder 15, wherein one end of the linear bearing 14 is connected with the output end of the axial cylinder 7, the other end of the linear bearing 14 corresponds to one end of the alloy bar 3 to be cut at the position where the pneumatic blocking and stopping material dividing device 4 corresponds to the unpowered slope material channel 1, the other end of the alloy bar 3 to be cut is in close contact with the axial positioning baffle 2, and the laser range finder 15 is arranged at one side of the axial cylinder 7 corresponding to the alloy bar 3 to be cut.
The axial cylinder 7 pushes the end face of the alloy bar 3 to be cut to abut against the axial positioning baffle 2 through the linear bearing 14 to complete axial positioning, the linear bearing 14 provides support for the axial cylinder 7, and stable orientation is guaranteed when the axial cylinder 7 pushes the alloy bar 3 to be cut. The length of the alloy bar 3 to be cut is measured by a laser range finder 15, and the distance from the laser range finder 15 to the end face of the alloy bar 3 to be cut corresponding to the linear bearing 14 is L Measuring The distance from the laser range finder 15 to the top of the alloy bar 3 to be cut to the axial positioning baffle 2 is L Stator And the length L of the alloy bar 3 to be cut is the difference between the two, and the specific calculation formula is as follows:
L＝L stator -L Measuring (1)
After the length of the alloy bar 3 to be cut is measured at the position of the pneumatic stopping and distributing device 4, the pneumatic stopping and distributing device 4 which is positioned in front of the alloy bar 3 to be cut descends, the alloy bar 3 to be cut continues to roll to the unpowered feeding roller 9 at the tail end position along the unpowered slope material channel 1 by means of gravity, the alloy bar 3 to be cut is pushed by the electric push rod 12 along the first linear guide rail 16 under the action of the servo motor 8, and the alloy bar 3 to be cut is pushed forwards to the position right above the weight measuring device along the unpowered feeding roller 9.
As shown in fig. 3, treat weight measuring device of cutting alloy bar 3, including platform balance 6, V type support 10, bearing roller support 11 and jacking cylinder 13, platform balance 6 is installed on jacking cylinder 13, the top of platform balance 6 is equipped with V type support 10, the top of platform balance 6 is equipped with bearing roller support 11, the top of two V type supports 10 is equipped with the V type breach that corresponds with waiting to cut alloy bar 3, evenly install on bearing roller support 11 and wait to cut the unpowered feed roll 9 that alloy bar 3 corresponds, will wait to cut alloy bar 3 after measuring length through unpowered feed roll 9 and catch, wait to cut alloy bar 3 and place in the top of unpowered feed roll 9 and V type support 10.
When carrying out the check weighing, jacking cylinder 13 drives platform balance 6 and rises, and V type support 10 on platform balance 6 will wait to cut alloy bar 3 and lift and break away from the feed roll, and platform balance 6 carries out the operation of weighing. Then the lifting cylinder 13 descends, and the alloy bar 3 to be cut returns to the unpowered feed roller 9 and continues to be conveyed forwards under the action of the electric push rod 12.
The diameter measuring instrument 5 is arranged in the conveying direction of the alloy bar 3 to be cut away from the weight measuring device, the diameter measuring instrument 5 is installed on the carrier roller support 11 through a second linear guide rail 19, the second linear guide rail 19 is perpendicular to the conveying direction of the alloy bar 3 to be cut, and the diameter measuring instrument 5 is in sliding fit with the second linear guide rail 19. The diameter measuring instrument 5 is arranged at a position which is more than 1m away from the cutting position of the alloy bar 3 to be cut, and the diameter measuring instrument 5 can finish the arbitrary appointed section diameter d of the alloy bar 3 to be cut by adopting a laser scanning method under the accurate pushing support of a servo feeding system i The measurement of (2). The diameter d of the designated section is measured by the diameter gauge 5 i The alloy bar 3 to be cut continues to be pushed by the electric push rodIs fed into a quantitative cutting device to be cut and processed under the action of the cutting device.
The invention also provides a quantitative cutting mode of the alloy bar to be cut, which is characterized in that the current weight of the alloy bar to be cut is calculated according to the actually measured weight and length of the alloy bar to be cut, the initially set weight of the material section is combined, and the diameter d of each section is utilized i Correcting to obtain the actual length of each segment, and finally controlling cutting and blanking in a fixed-length mode, namely cutting and blanking by using the following formula:
L＝G/[ρ′*π*(d/2) 2 ] (2)
L i ＝G i /[ρ′*π*(d i /2) 2 ] (3)
wherein: l is i Is a determined cutting length (m); l is the total length (m) of the alloy bar to be cut measured by the laser range finder; g is the total weight (Kg) of the alloy bar to be cut measured by the platform scale; rho' is the actual density value (Kg/m) of the alloy bar to be cut 3 ) (ii) a d is the average outer diameter value (m) of the alloy bar to be cut; g i The weight (Kg) of the cut material section set by the user; d i The outer diameter values (m) of alloy bars to be cut at different sections are obtained; and pi is the circumferential ratio. And (3) calculating an actual density value rho 'from (2), and substituting the actual density value rho' into (3) to obtain the cutting length, namely the formula (4).
L i ＝[G i *L*(d/2) 2 ]/[G*(d i /2) 2 ] (4)
The invention utilizes a plurality of feeding devices which are placed and automatically feed single alloy bar, and automatically measures the weight and the length of the alloy bar to be cut and the diameter d of different specified sections in the feeding process i The measurement of (2). Replacing the calculated weight of the theoretical density value with the measured weight of the alloy bar to be cut, calculating the current weight of the alloy bar to be cut according to the measured weight and length of the alloy bar to be cut, combining the initially set weight of the material sections, and utilizing the diameter d of each section i Correcting to obtain the actual length of each segment, and controlling cutting and blanking in a fixed-length mode to accurately control cuttingThe weight of each section of alloy bar to be cut.
The result shows that the invention provides more accurate data for quantitative cutting of the alloy bar 3, greatly improves the quantitative precision, and can ensure that the weight error of the alloy bar 3 to be cut is less than or equal to 100 g.

Claims (8)

1. A device capable of improving quantitative cutting precision of alloy bars is characterized by comprising a feeding device and a measuring device, wherein the feeding device is provided with an unpowered slope material channel, an axial positioning baffle plate and a pneumatic stopping and distributing device; the measuring device comprises a length measuring device, a weight measuring device and a diameter measuring instrument, wherein: a length measuring device is arranged at the position, corresponding to the unpowered slope material channel, of the pneumatic stopping and distributing device and outside one end, far away from the axial positioning baffle, of the alloy bar to be cut; a weight measuring device is arranged in the direction that the alloy bar to be cut rolls away from the unpowered slope material channel due to the dead weight of the alloy bar, and a diameter gauge is arranged in the direction that the alloy bar to be cut slides away from the weight measuring device;
the length measuring device for the alloy bar to be cut comprises an axial cylinder, a linear bearing and a laser range finder, wherein one end of the linear bearing is connected with the output end of the axial cylinder, the other end of the linear bearing corresponds to one end of the alloy bar to be cut at the position where the pneumatic blocking and stopping material distributing device corresponds to the unpowered slope material channel, the other end of the alloy bar to be cut is in close contact with an axial positioning baffle, and the laser range finder is arranged on one side of the axial cylinder corresponding to the alloy bar to be cut;
the axial cylinder pushes the end face of the alloy bar to be cut to be propped against the axial positioning baffle through the linear bearing to complete axial positioning; measuring the length of the alloy bar to be cut by a laser range finder, wherein the distance from the laser range finder to the end surface of the alloy bar to be cut corresponding to the linear bearing is L Measuring The distance from the laser range finder to the top of the alloy bar to be cut to the axial positioning baffle is L Stator Length of alloy bar to be cutL is the difference between the two, and the specific calculation formula is as follows:
L=L stator -L Measuring （1）。
2. The device capable of improving the quantitative cutting precision of the alloy bar as claimed in claim 1, wherein the feeding device comprises an unpowered slope material channel, an axial positioning baffle, a pneumatic blocking and stopping material distributing device and an unpowered feeding roller, and the device has the following specific structure:
the opposite parallel in both sides that unpowered slope material said is equipped with fixed stop, the back and the baffle leg joint of every fixed stop, the one side that is close to a fixed stop on unpowered slope material is said is equipped with the axial positioning baffle, wait to cut alloy bar and arrange in proper order on the unpowered slope material between axial positioning baffle and another fixed stop says and place, axial positioning baffle and fixed stop all with the axial vertical who waits to cut alloy bar, the axial positioning baffle is waiting to cut alloy bar axial direction and is controlling along unpowered slope material and say and remove, lower one end opening part that says at unpowered slope is equipped with pneumatics and keeps off feed divider, unpowered feed roll sets up in unpowered slope material and says terminal position department.
3. The device for improving the quantitative cutting accuracy of the alloy bar as recited in claim 2, wherein an electric push rod is further provided, a first linear guide rail parallel to the alloy bar to be cut is arranged in the direction in which the alloy bar to be cut rolls away from the unpowered slope material channel due to the self weight of the alloy bar to be cut, a servo motor is mounted on the first linear guide rail, one end of the electric push rod is mounted at the output end of the servo motor, and the other end of the electric push rod corresponds to one end of the alloy bar to be cut conveyed to the weight measuring device.
4. The device capable of improving the quantitative cutting precision of the alloy bars as claimed in claim 1, wherein after the length of the alloy bars to be cut is measured at the pneumatic stopping and separating device, the pneumatic stopping and separating device in front of the alloy bars to be cut descends, the alloy bars to be cut continue to roll to the unpowered feeding roller at the tail end position along the unpowered slope material channel by means of gravity, and the electric push rod pushes the alloy bars to be cut along the first linear guide rail under the action of the servo motor to push the alloy bars to be cut to the position right above the weight measuring device along the unpowered feeding roller.
5. The device for improving the quantitative cutting accuracy of the alloy bars according to claim 1, wherein the device for measuring the weight of the alloy bars to be cut comprises a platform scale, a V-shaped support, a carrier roller support and a jacking cylinder, the platform scale is installed on the jacking cylinder, the V-shaped support is arranged at the top of the platform scale, the carrier roller support is arranged above the platform scale, V-shaped notches corresponding to the alloy bars to be cut are formed in the tops of the two V-shaped supports, unpowered feed rollers corresponding to the alloy bars to be cut are uniformly installed on the carrier roller support, the alloy bars to be cut after the length measurement are received through the unpowered feed rollers, and the alloy bars to be cut are placed at the tops of the unpowered feed rollers and the V-shaped support.
6. The device capable of improving the quantitative cutting accuracy of the alloy bar according to the claim 5, characterized in that when the weight measurement is carried out, the jacking cylinder drives the platform scale to ascend, a V-shaped bracket on the platform scale lifts the alloy bar to be cut off from the feeding roller, and the platform scale carries out the weighing operation; and then the jacking cylinder descends, the alloy bar to be cut returns to the unpowered feeding roller, and the alloy bar is continuously conveyed forwards under the action of the electric push rod.
7. The device capable of improving the quantitative cutting precision of the alloy bar as claimed in claim 1, wherein a diameter gauge is arranged in the conveying direction of the alloy bar to be cut away from the weight measuring device, the diameter gauge is mounted on the carrier roller bracket through a second linear guide rail, the second linear guide rail is perpendicular to the conveying direction of the alloy bar to be cut, and the diameter gauge is in sliding fit with the second linear guide rail; the diameter measuring instrument is arranged at a position more than 1m away from the cutting position of the alloy bar to be cut, and the diameter measuring instrument completes the alloy bar to be cut by adopting a laser scanning method under the accurate material pushing support of a servo feeding systemArbitrarily specified cross-sectional diameter of materiald i Measuring (2); the diameter of the appointed section is measured by a diameter gauged i And the alloy bar to be cut is continuously fed into quantitative cutting equipment for cutting under the action of the electric push rod.
8. Apparatus for improving the accuracy of quantitative cutting of alloy bars as defined in claim 1 wherein the weight of the initial set section is combined with the measured weight and length of the alloy bar to be cut and the diameter of each section is usedd i Correcting to obtain the actual length of each segment, and finally controlling cutting and blanking in a fixed-length mode, namely cutting and blanking by using the following formula:
L=G/[ρ′*π*(d/2) 2 ] （2）
L i =G i /[ρ′*π*(d i /2) 2 ] （3）
wherein: l is i Is a determined cutting length (m); l is the total length (m) of the alloy bar to be cut measured by the laser range finder; g is the total weight (Kg) of the alloy bar to be cut measured by the platform scale; rho' is the actual density value (Kg/m) of the alloy bar to be cut 3 ）；dThe average outer diameter value (m) of the alloy bar to be cut is obtained; g i The weight (Kg) of the cut material section set by the user;d i the outer diameter values (m) of the alloy bars to be cut at different sections are obtained; pi is the circumference ratio; calculating an actual density value rho 'from the (2), substituting the actual density value rho' into the (3) to obtain a cutting length, namely a formula (4);
L i =[G i *L*(d/2) 2 ]/[G*(d i /2) 2 ] （4）。
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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102581314A (en) * 2012-02-15 2012-07-18 河源职业技术学院 Push type bar stock feeder of electric cylinder
CN103121179A (en) * 2013-02-05 2013-05-29 浙江久立特材科技股份有限公司 On-line weighing device used for precise cutting and blanking of long rod materials
CN112047000A (en) * 2020-08-10 2020-12-08 河北敬业中厚板有限公司 Automatic steel counting device for bar production and steel counting method thereof
CN212885422U (en) * 2020-08-26 2021-04-06 张家港市立业机械有限公司 Automatic material conveying mechanism for pipe cutting
CN112763044A (en) * 2020-12-28 2021-05-07 河北三宇试验机有限公司 Weighing and length measuring instrument for steel bar sample

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102581314A (en) * 2012-02-15 2012-07-18 河源职业技术学院 Push type bar stock feeder of electric cylinder
CN103121179A (en) * 2013-02-05 2013-05-29 浙江久立特材科技股份有限公司 On-line weighing device used for precise cutting and blanking of long rod materials
CN112047000A (en) * 2020-08-10 2020-12-08 河北敬业中厚板有限公司 Automatic steel counting device for bar production and steel counting method thereof
CN212885422U (en) * 2020-08-26 2021-04-06 张家港市立业机械有限公司 Automatic material conveying mechanism for pipe cutting
CN112763044A (en) * 2020-12-28 2021-05-07 河北三宇试验机有限公司 Weighing and length measuring instrument for steel bar sample

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