CN108555694B - A kind of silk material cutting force meansurement method and device - Google Patents
A kind of silk material cutting force meansurement method and device Download PDFInfo
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- CN108555694B CN108555694B CN201810585282.4A CN201810585282A CN108555694B CN 108555694 B CN108555694 B CN 108555694B CN 201810585282 A CN201810585282 A CN 201810585282A CN 108555694 B CN108555694 B CN 108555694B
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- silk material
- cutting force
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
- B23Q17/099—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring features of the machined workpiece
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/09—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool
- B23Q17/0952—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining
- B23Q17/0966—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring cutting pressure or for determining cutting-tool condition, e.g. cutting ability, load on tool during machining by measuring a force on parts of the machine other than a motor
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Abstract
The present invention provides a kind of test devices of silk material cutting force, including lathe body, spindle chuck collet, pull-type tailstock, guide rail, silk material clamp assemblies, observation acquisition component and cutter head assembly.The present invention also provides a kind of silk material cutting force meansurement methods, this method uses above-mentioned test device, and the step of taking the detection of lathe concentricity, silk material to clamp fixed, cutter head assembly installation, trial cut and formal cutting in order to the cutting force in silk material cutting process test it is efficient and convenient can real-time reading numerical values online, test device structure is simple, easy clamping, it is easy to operate.It is concluded using computer software technology in the collection that cutting can carry out data early period, and on-line analysis is carried out to cutting force value using the method for mathematics, the advantages that applicability and practicability are high, can satisfy the Cutting Force measurement demand and stable product quality of silk material metal part.
Description
Technical field
The present invention relates to machining techniques, are related to silk material turning and its test, and in particular to a kind of silk material cutting force meansurement
Method and device.
Background technique
In machining, the rigidity of slewing parts is determined by diameter and length, and using L as length, d is diameter.When to
Process silk material L/d > > 10 when, need the cutting and processing of more accurate control silk material, it is smart to processing in silk material processing to ensure
The requirement of degree and quality.For silk material metal, the installation way of silk material equally has centainly the measurement of cutting force
Influence.The principal element for influencing processing quality is measured in real time to cutting force.Either to cutting silk material metal essence
The research of refinement or silk material machining control and on-line checking etc. require to know cutting force value in real time.Survey to silk material cutting force
Amount first has to the installation way for determining silk material, different installation way is taken according to the geomery of workpiece.Next needs to make silk
Central spindle stablizes revolution to material during the cutting process, and is cutting eventually by more accurate mode and device measurement bite point of a knife
Real-time stress in the process.
In the prior art when carrying out silk material processing can not the stability turned round during the cutting process of accurate measurements silk material, together
Shi Wufa consistently online reads and records in real time and accurately cutting force numerical value, and then cannot be guaranteed to cut in silk material process
The levels of precision of stabilization and the silk material cutting of power, is finally unable to satisfy metal wire material part converted products precision height and quality is steady
Fixed requirement.
Summary of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of test method of silk material cutting force
And device, solving in the prior art can not the stabilization turned round during the cutting process of accurate measurements silk material when carrying out silk material processing
Property, at the same can not consistently online in real time and accurately read and record cutting force numerical value, and then cannot be guaranteed silk material process
The problem of levels of precision of stabilization and the silk material cutting of middle cutting force.
In order to solve the above-mentioned technical problem, the present invention is realised by adopting the following technical scheme:
A kind of test device of silk material cutting force, including lathe body, spindle chuck collet and pull-type tailstock, the master
Axis chuck clip is installed on lathe body, and the pull-type tailstock is installed on guide rail, and the guide rail is installed on lathe
On ontology, silk material clamp assemblies are installed on the pull-type tailstock, the silk material clamp assemblies include being mounted on pull-type tail
Tailstock cylinder on seat is equipped with silk material clamping head, hollow mandrel and tailstock cover plate, the hollow core in the tailstock cylinder
Axis is rotatablely installed by bearing in the tailstock cylinder, and mandrel sleeve, the silk are also socketed with outside the hollow mandrel
The clamping head screw and strap for fixing and clamping silk material, installation in the tailstock cylinder are also equipped in material clamping head
It is also equipped with for adjusting the clamping head lifting platform for having silk material clamping head alignment position；
The lathe body is also equipped with observation acquisition component, and the observation acquisition component includes being mounted on lathe sheet
Screw rod on body is socketed mobile base on the screw rod, micro-adjusting mechanism, the fine tuning is equipped in the mobile base
Mechanism and screw rod engaged transmission simultaneously move horizontally mobile base, and bracket, the support are also equipped in the mobile base
Frame end is equipped with display screen, magnifying glass and adjustment bolt, and photographic device is also equipped on the magnifying glass, and described takes the photograph
Picture device is connect with display screen, for showing that silk material cuts situation；
Cutter head assembly is also equipped in the lathe body, the cutter head assembly includes fixing seat, the fixation
Top board and lower platen are installed on seat, bite is installed between the top board and lower platen, the lower platen and
Piezoelectric transducer and the package board for encapsulating piezoelectric transducer are installed between fixing seat, are connected on the piezoelectric transducer
Conducting wire, the top board, lower platen and fixing seat are fastened by pretension bolt.
The present invention also protects a kind of silk material cutting force meansurement method, and this method uses silk material cutting force meansurement as described above
Device, method includes the following steps:
Step 1: the detection of lathe concentricity, using silk material concentricity special measurement device, i.e. diameter 3mm and concentricity is small
In the concentricity of metal thread bar adjustment the spindle chuck collet and hollow mandrel of 0.01mm, specific method is rotation spindle chuck folder
Head clamps metal thread bar under its Self-centering Action, and swing handle moves hollow core axial direction spindle chuck collet direction, directly
Hollow mandrel is passed through to metal thread bar and head clamping is clamped by silk material, and slow swing handle presss from both sides hollow mandrel far from spindle chuck
Head and simultaneously from display screen from metal thread bar whether have skew or bounce, if i.e. prove spindle chuck collet and
Hollow mandrel concentricity has adjusted completion, if there is skew or bounce, then adjusts clamping head lifting platform immediately and slowly returns
Handle hand, eliminating bounce and skew is that spindle chuck collet and hollow mandrel concentricity have adjusted completion；
Step 2: silk material clamps fixation, and spindle chuck collet and hollow is detected and adjusted using coaxiality measuring tool
Within the concentricity to 0.01mm of mandrel, silk material to be measured is penetrated on the outside of silk material clamping head, pushes silk material clamping head close to main
Axis chuck clip continues to be sent into silk material and imports hollow mandrel until silk material is inserted into spindle chuck collet after passing through hollow mandrel
It is interior, lock spindle chuck collet, swing handle so that silk material clamping head far from spindle chuck collet until be moved to for processed filament
The position that material is of the required size continues to press on silk material clamping head up to silk material belongs to and clamped condition is straightened, makes silk material after locking
Radially bending is not generated in cutting, the spindle chuck collet and hollow mandrel at lathe body both ends use synchronous machine drives,
To guarantee that silk material to be processed does not twist in process；
Step 3: the installation of cutter head and sensor, it is by pretension bolt that the blade of piezoelectric transducer and bite is rigid
Parallel connection is fixed between top board and lower platen, and cutting knife head stretches out top board, is adjusted the position of cutter head assembly and while being led to
Display screen observation bite position of tool tip is crossed, until bite position of tool tip and silk material axle center to be processed are in same level position
It sets；
Step 4: trial cut and adjustment make bite carry out trial cut to silk material, pass through display by rotating silk material to be processed
Whether whether screen observation turning surface uniformly and symmetrical about silk material axle center to be processed, such as symmetrical to complete trial cut, such as
Position that is asymmetric then adjusting adjustment cutter head assembly is up to whether turning surface uniformly and about silk material to be processed
Axle center is symmetrical, and whether monitoring data transmission and display work normally the cutting force data that then zero piezoelectric transducer exports；
Step 5: formal cutting goes out first with bite in silk material both side ends turning to be processed before formal cutting starts
One necking down, makes silk material have self-alignment effect, and the bending for eliminating silk material to be processed itself makes it in spindle chuck collet and silk material
The axial line skew generated under the garter extension of clamping head, guarantees turning rotating accuracy, to improve the rigidity of silk material to be processed,
Continue to read result and to be processed silk material of the numerical value of cutting force as cutting force meansurement from computer in each knife turning process
The cutting parameter of process carries out average value processing in mathematical induction method, obtains the test result of silk material processing cutting force.
The present invention also has following technical characteristic:
Specifically, the piezoelectric transducer is three-way piezoelectric conversion sensor, and the piezoelectric transducer passes through
Pretension bolt is in parallel with bite to be fixed.
It is connected together specifically, shaft coupling is respectively adopted with hollow mandrel in the spindle chuck collet at the lathe body both ends
Motor driven is walked, to guarantee that silk material to be processed does not twist in process.
Specifically, the silk material device for testing cutting force further includes for adjusting spindle chuck collet and hollow mandrel concentricity
Diameter 3mm and concentricity be less than 0.01mm metal thread bar.
Specifically, the silk material device for testing cutting force further includes the amplification electricity for the voltage data of receiving wire output
Road, AD conversion component and the computer for carrying out cutting force calculating.
Specifically, the silk material is straightened under clamped condition, the tensile strength of silk material to be processed is no more than its tensile yield
Intensity.
Specifically, the pretightning force of the piezoelectric transducer is adjusted by pretension bolt.
Compared with prior art, the present invention having the following technical effect that
(I) present invention waits for carrying out micro- sight to processing silk material cutting position by the combination of magnifying glass and camera shooting display system
Examine, can observe degree of stability and cutting output of the silk material to be processed in turning process in real time online, guarantee turning and to
The concentricity for processing silk material, greatly improves the turnery processing precision of silk material to be processed.
(II) present invention is installed by the combination of three-way piezoelectric sensor and cutter head assembly, and is made by certain pretightning force
Piezoelectric transducer keeps elasticity and susceptibility, and is used in conjunction in the computer for connecing data acquisition and processing (DAP), treats processing silk material and is cutting
Cutting force in the process carries out real-time monitoring and collection, can guarantee at any time to carry out the precision of silk material during the cutting process in this way
Monitoring.
(III) present invention is also by certain cutting way, adjusts the bite of each turning according to total Lathe quantity, and first
The bite setting of knife turning is larger, it is therefore prevented that because silk material surface irregularity is uniformly to the shadow of cutting force and cutting levels of precision
It rings.Method of the invention also carries out real-time monitoring to the silk material degree of stability and cutting force of per pass turning, and according to degree of stability
Silk material position and lower road turning bite are adjusted with cutting force, to guarantee silk material turnery processing precision.
Detailed description of the invention
Data acquisition transmission work and cutting monitoring schematic diagram when Fig. 1 is turning silk material workpiece.
Fig. 2 is the structural schematic diagram of silk material clamp assemblies of the present invention.
Fig. 3 is cutter head assembly arrangement scheme of installation of the present invention.
Fig. 4 is the connection schematic diagram of lathe spindle and motor of the present invention.
Size enlarged diagram when Fig. 5 is measurement workpiece.
Fig. 6 is the partial enlargement diagram at the A of Fig. 5.
Fig. 7 is the stress diagram of cutter head when cutting silk material.
The meaning of each label in figure are as follows: 1- lathe body, 2- spindle chuck collet, the pull-type tailstock of 3-, 4- guide rail, 5- silk material
Clamp assemblies, 6- observe acquisition component, 7- cutter head assembly, 8- shaft coupling, 9- synchronous motor, 10- silk material to be processed；
(5-1)-tailstock cylinder, (5-2)-silk material clamping head, (5-3)-hollow mandrel, (5-4)-tailstock cover plate, (5-5)-
Bearing, (5-6)-mandrel sleeve, (5-7)-clamping head screw, (5-8)-strap, (5-9)-clamping head lifting platform；
(6-1)-screw rod, (6-2)-mobile base, (6-3)-micro-adjusting mechanism, (6-4)-bracket, (6-5)-display screen, (6-
6)-magnifying glass, (6-7)-adjustment bolt, (6-8)-photographic device；
(7-1)-fixing seat, (7-2)-top board, (7-3)-lower platen, (7-4)-bite, (7-5)-piezoelectric transducer,
(7-6)-package board, (7-7)-conducting wire, (7-8)-pretension bolt.
Explanation is further explained in detail to particular content of the invention with reference to embodiments.
Specific embodiment
In compliance with the above technical solution, specific embodiments of the present invention are given below, it should be noted that the present invention not office
It is limited to following specific embodiments, all equivalent transformations made on the basis of the technical solutions of the present application each falls within protection model of the invention
It encloses.
Embodiment:
The present embodiment provides a kind of test device of silk material cutting force, as shown in Figures 1 to 7, including lathe body 1, master
Axis chuck clip 2 and pull-type tailstock 3, the spindle chuck collet 2 are installed on lathe body 1, the pull-type tailstock 3
It is installed on guide rail 4, the guide rail 4 is installed in lathe body 1, and silk material clamp assemblies 5, institute are equipped on pull-type tailstock 3
The silk material clamp assemblies 5 stated include being equipped with silk material in tailstock the cylinder 5-1, the tailstock cylinder 5-1 being mounted on pull-type tailstock 3
Clamping head 5-2, hollow mandrel 5-3 and tailstock cover plate 5-4, the hollow mandrel 5-3 are rotatablely installed by bearing 5-5 in institute
In the tailstock cylinder 5-1 stated, it is also socketed with mandrel sleeve 5-6 outside the hollow mandrel, is also pacified on the silk material clamping head 5-2
Also pacify equipped with installation in the clamping head screw 5-7 and strap 5-8, the tailstock cylinder 5-1 for fixing and clamping silk material
Equipped with for adjusting the clamping head lifting platform 5-9 for having silk material clamping head 5-2 alignment position；
The lathe body 1 is also equipped with observation acquisition component 6, and the observation acquisition component 6 includes being mounted on vehicle
It is socketed mobile base 6-2 on screw rod 6-1, the screw rod 6-1 on bed ontology 1, is equipped on the mobile base 6-2 micro-
Regulating mechanism 6-3, the micro-adjusting mechanism 6-3 and screw rod 6-1 engaged transmission simultaneously move horizontally mobile base 6-2, the shifting
Bracket 6-4 is also equipped on dynamic pedestal 6-2, the end bracket 6-4 is equipped with display screen 6-5, magnifying glass 6-6 and adjustment spiral shell
Photographic device 6-8, the photographic device 6-8 and display screen 6-5 company are also equipped on bolt 6-7, the magnifying glass 6-6
It connects, for showing that silk material cuts situation；
Cutter head assembly 7 is also equipped in the lathe body 1, the cutter head assembly 7 includes fixing seat 7-1, described
Fixing seat 7-1 on top board 7-2 and lower platen 7-3 are installed, be equipped between the top board 7-2 and lower platen 7-3
Bite 7-4 is equipped with piezoelectric transducer 7-5 between the lower platen 7-3 and fixing seat 7-1 and for encapsulating piezoelectric sensing
Be connected to conducting wire 7-7 on the package board 7-6, the piezoelectric transducer 7-5 of device 7-5, the top board 7-2, lower platen 7-3 and
Fixing seat 7-1 is fastened by pretension bolt 7-8.
As a kind of concrete scheme of the present embodiment, the piezoelectric transducer 7-5 of the present embodiment is three-way piezoelectric conversion sensing
Device, and the piezoelectric transducer 7-5 is fixed by the way that pretension bolt 7-8 is in parallel with bite 7-4.
As a kind of concrete scheme of the present embodiment, the spindle chuck collet 2 at 1 both ends of lathe body of the present embodiment is in
Shaft coupling connection synchronous machine drives are respectively adopted in air-cored axis 5-3, to guarantee that silk material 10 to be processed does not occur in process
Torsion.
As a kind of concrete scheme of the present embodiment, the present embodiment further includes for adjusting spindle chuck collet 2 in
The diameter 3mm and concentricity of air-cored axis' 5-3 concentricity are less than the metal thread bar of 0.01mm.
As a kind of concrete scheme of the present embodiment, the device of the present embodiment further includes exporting for receiving wire 7-7
The amplifying circuit of voltage data, AD conversion component and the computer for carrying out cutting force calculating.
Using the silk material device for testing cutting force of the present embodiment silk material cutting force meansurement method the following steps are included:
Step 1: the detection of lathe concentricity, using silk material concentricity special measurement device, i.e. diameter 3mm and concentricity is small
In the concentricity of metal thread bar adjustment the spindle chuck collet 2 and hollow mandrel 5-3 of 0.01mm, specific method is rotation main shaft card
Disc clamp head 2 clamps metal thread bar under its Self-centering Action, and swing handle makes hollow mandrel 5-3 to 2 side of spindle chuck collet
To movement, until metal thread bar passes through hollow mandrel 5-3 and clamped by silk material clamping head 5-2, slow swing handle makes hollow core
Far from spindle chuck collet 2 and simultaneously from display screen 6-5, whether metal thread bar has skew or bounce to axis 5-3, if
Do not prove that spindle chuck collet 2 and hollow mandrel 5-3 concentricity have adjusted completion, if there is skew or bounce, then
Adjust clamping head lifting platform 5-9 and slow rotary handle immediately, make bounce and skew eliminate as spindle chuck collet 2 with it is hollow
Mandrel 5-3 concentricity has adjusted completion；
Step 2: silk material clamps fixation, and spindle chuck collet 2 and hollow is detected and adjusted using coaxiality measuring tool
Within the concentricity to 0.01mm of mandrel 5-3, silk material to be measured is penetrated on the outside of silk material clamping head 5-2, pushes silk material clamping head
5-2 continues to be sent into silk material and imports hollow mandrel 5-3 until silk material is inserted after passing through hollow mandrel 5-3 close to spindle chuck collet 2
Enter in main shaft chuck clip 2, lock spindle chuck collet 2, swing handle so that silk material clamping head 5-2 far from spindle chuck collet
2 process the position that silk material is of the required size until being moved to generation, and silk material clamping head 5-2 is continued to press on after locking until silk material category
In clamped condition is straightened, silk material is set not generate radially bending in cutting, the spindle chuck collet 2 at 1 both ends of lathe body is in
Air-cored axis 5-3 uses synchronous machine drives, to guarantee that silk material 10 to be processed does not twist in process；
Step 3: the installation of cutter head and sensor, by pretension bolt 7-8 by piezoelectric transducer 7-5's and bite 7-4
Blade rigidity parallel connection is fixed between top board 7-2 and lower platen 7-3, and bite 7-4 cutter head stretches out top board 7-2, adjusts knife
Bite 7-4 position of tool tip is simultaneously observed by display screen 6-5 simultaneously in the position of head assembly 7, until bite 7-4 position of tool tip with
10 axle center of silk material to be processed is in the same horizontal position；
Step 4: trial cut and adjustment make bite 7-4 carry out trial cut to silk material, pass through by rotating silk material 10 to be processed
Whether whether display screen 6-5 observation turning surface uniformly and symmetrical about 10 axle center of silk material to be processed, such as symmetrically i.e. complete
At trial cut, the position of adjustment cutter head assembly 7 is adjusted if asymmetric until turning surface whether uniformly and whether about
10 axle center of silk material to be processed is symmetrical, and whether monitoring data transmission and display work normally then zero piezoelectric transducer 7-5 output
Cutting force data；
Step 5: formal cutting, before formal cutting starts, first with bite 7-4 in 10 both side ends of silk material to be processed
Turning goes out a necking down, and silk material is made to have self-alignment effect, and the bending for eliminating silk material 10 to be processed itself presss from both sides it in spindle chuck
The axial line skew generated under the garter extension of first 2 and silk material clamping head 5-2, guarantees turning rotating accuracy, to be processed to improve
The rigidity of silk material 10 continues to read knot of the numerical value of cutting force as cutting force meansurement from computer in each knife turning process
The cutting parameter of 10 process of fruit and silk material to be processed carries out average value processing in mathematical induction method, obtains silk material processing
The test result of cutting force.
In the present embodiment, cutting force includes main cutting force, feeds cutting force and backwards cutting force, and cutting force is in computer
Calculating process is calculated with cutting force calculation formula known in the art or model.
As a kind of concrete scheme of the present embodiment, the silk material of the present embodiment is straightened under clamped condition, silk material 10 to be processed
Tensile strength be no more than its tensile yield strength.
As a kind of concrete scheme of the present embodiment, the pretightning force of the piezoelectric transducer 7-5 of the present embodiment is by pre-tightening spiral shell
Bolt 7-8 is adjusted.
The test method and device of the silk material cutting force of the present embodiment require 2 φ × 50mm silk material blank φ in cutting size
3mm when cutting output is the STAINLESS STEEL WIRE of 1mm, inquires the tensile strength sigma of " Materials Handbook " stainless steel materialbIt is no more than
500MPa.Applying tensile force according to part radial dimension is 6kN.Tolerance and concentricity require to be 0.01mm.Using 7 class precision vehicles
Cut processing.Turning schematic diagram as shown in fig. 7, Oxyz azimuthal coordinates system in figure where cutting point as shown in fig. 7, x, y and z distinguish
For three mutually orthogonal directions, FzFor main cutting force, FxTo feed cutting force, FyFor backwards to cutting force；F is the amount of feeding, and Vc is
Cutting speed, the principal element for influencing cutting is main cutting force.
The present embodiment can be with cutting schemes a variety of below proposed adoption:
Scheme one: since silk material diameter is small and unilateral total allowance h=0.5mm, stay 0.1mm as allowance, 0.2mm makees
For first and the machining allowance of second.Trial cut is carried out before measurement silk material turning force value, after trial cut, to prevent error from producing
It is raw, piezoelectricity conversion sensor is measured into force value zero.Z-direction and Y-direction at this time is fixed, and X is moved to that can move axially along silk material
The silk material bottleneck of pull-type tailstock one end, knife rest Y-direction feeding tool is mobile to axle center simultaneously, by bite apFor 0.2mm, carry out
The processing of first procedure.The force value of the piezoelectricity conversion sensor of first procedure processing will be transmitted to computer, the first procedure
Force value can be fluctuated, the mainly influence of silk material surface roughness, force value at this time only refers to.Second work is carried out again
When sequence, opposite first procedure of force value fluctuation is smaller, at this time the average value of power taking value.Third procedure Turning parameters are 0.1mm,
Since third procedure is carried out on the basis of second operation work, the influence to cutting force value is mainly by bite, power
The delta data capture card of value can be arranged.It finally carries out multiple groups sample and force value Data induction is taken into its average value, as conjunction
The parameter foundation of lattice product production.
Scheme two: after trial cut, all parameters are zeroed.On the basis of scheme one, the first procedure is carried out, by penetration of a cutting tool
Measure apFor 0.1mm, second operation work is by bite apFor 0.2mm, third and fourth procedure Turning parameters is respectively 0.1mm.The
One procedure force value is for reference only, extracts by bite apCutting force value when for 0.2mm and 0.1mm.Force value Data induction
Take its average value.Reliability of the Cutting Force numerical value to workpiece in raising Tutrning Process.Cutting Force numerical value is quasi- to turning silk material
Exactness method and so on.Force value data, which can be averaged, produces foundation as qualified product.
Claims (8)
1. a kind of test device of silk material cutting force, including lathe body (1), spindle chuck collet (2) and pull-type tailstock (3),
The spindle chuck collet (2) is installed on lathe body (1), and the pull-type tailstock (3) is installed on guide rail (4),
The guide rail (4) is installed on lathe body (1), it is characterised in that:
It is equipped with silk material clamp assemblies (5) on the pull-type tailstock (3), the silk material clamp assemblies (5) include being mounted on
Tailstock cylinder (5-1) on pull-type tailstock (3), the tailstock cylinder (5-1) is interior to be equipped with silk material clamping head (5-2), hollow mandrel
(5-3) and tailstock cover plate (5-4), the hollow mandrel (5-3) are rotatablely installed by bearing (5-5) in the tailstock cylinder
In (5-1), also it is socketed with mandrel sleeve (5-6) outside the hollow mandrel, is also equipped in the silk material clamping head (5-2)
For fixing and clamping the clamping head screw (5-7) and strap (5-8) of silk material, also installed in the tailstock cylinder (5-1)
There is the clamping head lifting platform (5-9) for adjusting silk material clamping head (5-2) alignment position；
The lathe body (1) is also equipped with observation acquisition component (6), and the observation acquisition component (6) includes being mounted on
Screw rod (6-1) in lathe body (1) is socketed mobile base (6-2) on the screw rod (6-1), the mobile base (6-
2) be equipped on micro-adjusting mechanism (6-3), the micro-adjusting mechanism (6-3) and screw rod (6-1) engaged transmission and make mobile base (6-
2) it moves horizontally；It is also equipped with bracket (6-4) in the mobile base (6-2), the end the bracket (6-4) is equipped with aobvious
Display screen (6-5), magnifying glass (6-6) and adjustment bolt (6-7) are also equipped with photographic device (6- on the magnifying glass (6-6)
8), the photographic device (6-8) is connect with display screen (6-5)；
It being also equipped with cutter head assembly (7) in the lathe body (1), the cutter head assembly (7) includes fixing seat (7-1),
Top board (7-2) and lower platen (7-3), the top board (7-2) and lower platen are installed in the fixing seat (7-1)
It is equipped between (7-3) bite (7-4), piezoelectric transducer is installed between the lower platen (7-3) and fixing seat (7-1)
(7-5) and package board (7-6) for encapsulating piezoelectric transducer (7-5) is connected to conducting wire on the piezoelectric transducer (7-5)
(7-7), the top board (7-2), lower platen (7-3) and fixing seat (7-1) are fastened by pretension bolt (7-8).
2. the test device of silk material cutting force as described in claim 1, which is characterized in that the piezoelectric transducer (7-5)
For three-way piezoelectric conversion sensor, and the piezoelectric transducer (7-5) passes through pretension bolt (7-8) and bite (7-4)
It fixes side by side.
3. the test device of silk material cutting force as described in claim 1, which is characterized in that described lathe body (1) both ends
Spindle chuck collet (2) and hollow mandrel (5-3) be respectively adopted shaft coupling (8) connection synchronous motor (9) driving.
4. the test device of silk material cutting force as described in claim 1, which is characterized in that further include for adjusting spindle chuck
Collet (2) and the diameter 3mm of hollow mandrel (5-3) concentricity and concentricity are less than the metal thread bar of 0.01mm.
5. the test device of silk material cutting force as described in claim 1, which is characterized in that the device further includes leading for receiving
Amplifying circuit, AD conversion component and the computer for carrying out cutting force calculating of the voltage data of line (7-7) output.
6. a kind of silk material cutting force meansurement method, which is characterized in that this method is using the silk as described in claim 1,2,3 or 5
Material device for testing cutting force, method includes the following steps:
Step 1: the detection of lathe concentricity, using silk material concentricity special measurement device, i.e. diameter 3mm and concentricity is less than
The concentricity of metal thread bar adjustment spindle chuck collet (2) and hollow mandrel (5-3) of 0.01mm, specific method are rotation main shafts
Chuck clip (2), clamps metal thread bar under its Self-centering Action, and swing handle makes hollow mandrel (5-3) to spindle chuck
The movement of collet (2) direction slowly rotates until metal thread bar passes through hollow mandrel (5-3) and clamped by silk material clamping head (5-2)
Handle make hollow mandrel (5-3) far from spindle chuck collet (2) and simultaneously from display screen (6-5) it is middle from metal thread bar whether have
Skew or bounce, if not proving that spindle chuck collet (2) and hollow mandrel (5-3) concentricity have adjusted completion,
If there is skew or bounce, then clamping head lifting platform (5-9) and slow rotary handle are adjusted immediately, eliminate bounce and skew
As spindle chuck collet (2) and hollow mandrel (5-3) concentricity has adjusted completion；
Step 2: silk material clamps fixation, is detected using coaxiality measuring tool and adjusts spindle chuck collet (2) and hollow core
Within the concentricity to 0.01mm of axis (5-3), silk material to be measured is penetrated on the outside of silk material clamping head (5-2), silk material is pushed to clamp
Head (5-2) continues to be sent into silk material and imports hollow mandrel (5-3) until silk material passes through hollow core close to spindle chuck collet (2)
Axis (5-3) is inserted into afterwards in spindle chuck collet (2), is locked spindle chuck collet (2), swing handle is so that silk material clamping head (5-
2) silk is continued to press on after locking up to being moved to the position that silk material to be processed is of the required size far from spindle chuck collet (2)
Clamped condition is straightened up to silk material belongs in material clamping head (5-2), and silk material is made not generate radially bending, lathe body in cutting
(1) the spindle chuck collet (2) and hollow mandrel (5-3) at both ends are driven using synchronous motor (9)；
Step 3: the installation of cutter head and sensor, by pretension bolt (7-8) by piezoelectric transducer (7-5) and bite (7-4)
Blade rigidity parallel connection be fixed between top board (7-2) and lower platen (7-3), bite (7-4) cutter head stretch out top board (7-
2) it, adjusts the position of cutter head assembly (7) and bite (7-4) position of tool tip is observed by display screen (6-5) simultaneously, until cutting
Knife (7-4) position of tool tip and silk material to be processed (10) axle center are in the same horizontal position；
Step 4: trial cut and adjustment make bite (7-4) carry out trial cut to silk material, pass through by rotating silk material (10) to be processed
Whether whether display screen (6-5) observation turning surface uniformly and symmetrical about silk material to be processed (10) axle center, such as symmetrical
Trial cut is completed, the position of cutter head assembly (7) is adjusted if asymmetric until turning surface is uniformly and about to be processed
Silk material (10) axle center is symmetrical, and whether monitoring data transmission and display work normally then zero piezoelectric transducer (7-5) output
Cut force data；
Step 5: formal cutting, before formal cutting starts, first with bite (7-4) in silk material to be processed (10) both side ends
Turning goes out a necking down, continues to read the numerical value of cutting force in each knife turning process from computer as cutting force meansurement
As a result with the cutting parameter of silk material to be processed (10) process, average value processing is carried out in mathematical induction method, obtains silk material
Process the test result of cutting force.
7. silk material cutting force meansurement method as claimed in claim 6, which is characterized in that clamped condition is straightened in the silk material
Under, the tensile strength of silk material (10) to be processed is no more than its tensile yield strength.
8. silk material cutting force meansurement method as claimed in claim 6, which is characterized in that the piezoelectric transducer (7-5)
Pretightning force is adjusted by pretension bolt (7-8).
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| CN109382924A (en) * | 2018-11-30 | 2019-02-26 | 上海运韩光电科技有限公司 | A kind of optical prism roller machine table of the long-range microscopic observation device of band |
| CN111112750A (en) * | 2020-02-04 | 2020-05-08 | 上海康德莱医疗器械自动化研究所有限公司 | Cutting device for cutting end face of sheath tube |
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