CN108760275A - Cutter-handle of a knife-axis system engaging portion Analysis on Static Stiffness device and analysis method - Google Patents
Cutter-handle of a knife-axis system engaging portion Analysis on Static Stiffness device and analysis method Download PDFInfo
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Abstract
Present invention is generally directed to cutter-handle of a knife-axis system engaging portion Analysis on Static Stiffness device and analysis methods, are analyzed for carrying out simulation test and display, obtain the Static stiffness value of cutter-cutter handle combining part and handle of a knife-main shaft engaging portion.The device includes test babinet, cutter, handle of a knife, broaching tool structure, analog main shaft head, axial, radial loading device, axial, radial pressure sensor, axial, radial displacement transducer and its holder, control cabinet digital display meter and computer.A plurality of types of cutter-handle of a knifes-axis system Static stiffness test may be implemented in the present invention, it is convenient for disassembly and assembly when test, the data of acquisition can be shown by control cabinet digital display meter and be recorded, it can also be output on computer and show analysis, the static properties to studying cutter-handle of a knife-axis system is of great significance.
Description
Technical field
The invention belongs to Machine Design manufacturing technology fields, and in particular to a kind of engaging portion of cutter-handle of a knife-axis system
Static stiffness simulation test analytical equipment and method.
Background technology
High-speed processing machine tool is the basic index of a national manufacturing industry prosperity, and the performance of high speed processing tool system is straight
Connect the processing performance for influencing machining tool.High speed processing tool system can be summarized simply as follows cutter-handle of a knife-axis system,
Due to materials Static stiffness such as handle of a knife, cutter, main shafts in tool system it has been determined that so passing power and precision in system
Part, i.e. engaging portion, the influence to system performance are particularly important.The factor for influencing handle of a knife-main shaft engaging portion rigidity is mainly drawn
The tightening force of knife structure, the factor for influencing cutter-cutter handle combining part rigidity is mainly the length of fit of knife handle, practical at present
In process, there is no scientific and reasonable effective reference frame, unreasonable tightening force, cutter interference volume and length of fit to this
The machining accuracy and quality of lathe can be influenced, component can be also damaged under serious conditions, causes serious accident, mesh of the invention
Pass through handle of a knife-main shaft engaging portion under Research on experimental methods difference tightening force state and different cutter interference volumes, different cooperations
Data are shown and are recorded, and transfer to computer-assisted analysis by the stiffness variation rule of length bottom tool-cutter handle combining part, can be with
Handle of a knife tightening force, cutter interference volume and knife handle length of fit are rationally determined, to improving processing quality, precision and the effect of lathe
Rate is of great significance.
HSK handle of a knifes have rigidity as High Speed NC Machine Tools and the most common handle of a knife tool of machining center currently on the market
High, the advantages that switching performance is reliable, transmission chain is short, but the time that the type handle of a knife becomes international standard is short, marketing users are to it
There are many wrong understandings, the also not enough scientific appraisal of many problems lacks complete and comprehensive operating specification, as tightening force is big
Small and broaching tool structure standard is unsatisfactory for requirement on machining accuracy, handle of a knife, cutter interference volume and knife handle length of fit not according to
According to standard.Therefore the Static stiffness for studying it with main shaft, cutter engaging portion is of great significance to improving machine tooling performance.
Invention content
In order to solve the defect in the above-mentioned prior art, the present invention provides a kind of engaging portion of cutter-handle of a knife-axis system
Static stiffness simulation test analytical equipment, feature include：
Babinet is tested,
The test babinet first side is embedded and is fixed with analog main shaft head front end, and extends in inside test babinet
It is provided with handle of a knife on analog main shaft head fore-end, forms handle of a knife-main shaft engaging portion；
The analog main shaft head fore-end in the external face of test box is connect with analog main shaft head rear end, and in the mould
Quasi- main tapping rear end setting applies axial loading device of the axial force to the handle of a knife-main shaft engaging portion；
It is described to test the radial loaded dress that top of the box is embedded and fixes application radial load to the handle of a knife-main shaft engaging portion
It sets；
The first radial displacement transducer, the second radial displacement transducer is arranged in the downside of the handle of a knife, and detection handle of a knife is opposite
Displacement in main tapping front end.
Preferably, the axial loading device includes：Pull rod, axially loaded nut, plane bearing, axial compressive force sensing
Device, disk spring, washer A and washer B；
The axial compressive force sensor first side is connect with analog main shaft head rear end；
The pull rod sequentially passes through disk spring, washer A, plane bearing, washer B, axial compressive force sensor, analog main shaft
Behind head rear end, analog main shaft head front end, first end contacts the broaching tool structure of analog main shaft head front end setting；
The second end in the pull rod is arranged in the axially loaded nut；
The plane bearing prevents rotary motion to be transmitted to axial compressive force sensor, the disk spring in use on
The tight washer A and washer B.
Preferably, the setting first axis displacement sensor of both sides up and down, the second shaft position sensor of the handle of a knife, inspection
Handle of a knife is surveyed during tightening force increases to the axially inclined situation of handle of a knife.
Preferably, shaft position sensor holder is set in analog main shaft head front end, supports the first axis position
Displacement sensor, the second shaft position sensor；
Radial displacement transducer holder is arranged in analog main shaft head front end, supports and mobile first radial displacement passes
Sensor, the second radial displacement transducer.
Preferably, further include inside the test babinet：Cutter is set on the projecting end of the handle of a knife other side, is formed
Handle of a knife-cutter engaging portion；
First radial displacement transducer, the second radial displacement transducer also are located at the downside of the cutter, detect knife
Has the displacement relative to main tapping front end；
The radial loading device further includes：
Radial loaded seat,
It is provided with radial loaded screw in the radial loaded seat, the first end of the radial loaded screw is exposed at described
The first side in radial pressure sensor is arranged on second end for test box external face；
Head is arranged in the second side of the radial pressure sensor, and the head applies the handle of a knife or cutter
Radial loaded power.
Preferably, it tests on babinet and the analog main shaft head front end of different size model, mould is installed according to test specific requirement
Quasi- main tapping rear end, handle of a knife and cutter；
Described device also includes that control cabinet digital display meter and computer measure knot by adjusting axial direction and radial loading device
Conjunction portion misalignment, is shown by control cabinet digital display meter；Or
It is transmitted on computer and is analyzed by data transmission device, handle of a knife-main shaft knot under different tightening force states is calculated
The Static stiffness in conjunction portion, different cutters-handle of a knife length of fit, different cutter interference volume bottom tool-cutter handle combining part Static stiffness.
Preferably, handle of a knife taper shank portion is located in the internal taper hole of main tapping front end；The broaching tool of analog main shaft head front end
Structure is fixed with the handle of a knife, applies pulling force to handle of a knife, to tense handle of a knife-main shaft engaging portion.
A kind of engaging portion Static stiffness simulation test analysis method of cutter-handle of a knife-axis system, utilizes the cutter-knife
The engaging portion Static stiffness simulation test analytical equipment of handle-axis system, when carrying out handle of a knife-main shaft engaging portion axial rigidity test,
Cutter is not clamped, does not apply radial pressure；It tightens and unclamps axially loaded nut, different size of tightening force is applied to handle of a knife, is drawn
Clamp force size is measured by axial compressive force sensor；First axis displacement sensor, the second shaft position sensor, measure handle of a knife phase
For the axial displacement of main tapping front end；By axially loaded power-axial displacement relationship, it is axial to obtain axially loaded power-engaging portion
The relationship of rigidity.
Preferably, the engaging portion Static stiffness simulation test analysis dress of cutter-handle of a knife-axis system described in claim is utilized
It sets, when carrying out handle of a knife-main shaft engaging portion radial rigidity and angular rigidity test, cutter is not clamped, axial rotary loads nut and determines
Axial tightening power；The pressure position for adjusting radial loading device applies radial pressure to handle of a knife projecting end；By adjusting radial add
Screw is carried, making head, radial compression applied makes engaging portion generate radial displacement and angular displacement in handle of a knife in different sizes；
Establish handle of a knife-main shaft engaging portion coordinate system O-XYZ, radial loaded power FzWhen acting on handle of a knife projecting end, meet with
Lower formula：
Wherein by the first radial displacement transducer, the second radial displacement transducer measures radial displacement is δZA、δZB；Handle of a knife
By radial loaded power FzThe relatively radially displacement d generated0；By radial loaded power angular displacement d is occurred for handle of a knife1The displacement d of generation1' and
The flexible deformation d that handle of a knife is generated by radial loaded power2；
It is assumed that handle of a knife taper shank portion does not occur bending and deformation, therefore the relatively radially position of only handle of a knife-main shaft engaging portion
Move d0With angular displacement d1；
According to above-mentioned it is assumed that calculating the flexible deformation d of handle of a knife projecting end by finite element software2；
Then there is following formula：
Wherein, the distance for measuring O points to the first radial displacement transducer is l1；O points are to the second radial displacement transducer
Distance is l2；
Radial loaded power F is measured by measuring devicezWith δZA、δZBFunctional relation, obtain radial loaded in conjunction with above-mentioned formula
Power FzWith relatively radially displacement d0Functional relation, further derivation obtains the radial rigidity K of handle of a knife-main shaft engaging portion0：
Radial loaded power F is measured by measuring devicezWith δZA、δZBFunctional relation, M is had according to bemding moment formula1=FZ·l3；
l3It is distance of the O points to radial loaded power impetus；Moment M is obtained in conjunction with above-mentioned formula1With angular displacement d1Functional relation, into
One step derivation obtains the angular rigidity K of handle of a knife-main shaft engaging portion1：
Preferably, mobile after cutter is clamped in handle of a knife when carrying out cutter-cutter handle combining part radial rigidity and angular rigidity test
The position of radial loading device makes it apply radial pressure to cutter projecting end；After determining a knife handle clamping length, lead to
Radial loaded screw is overregulated, making head, pressure acts on cutter in different sizes, and engaging portion is made to generate displacement；
Radial loaded power FzWhen acting on cutter, meet following formula：
The second radial displacement transducer is first wherein placed in handle of a knife projecting end end, measures handle of a knife projecting end end radial direction position
Move δZBAfterwards, then by the first radial displacement transducer, the second radial displacement transducer tool parts are placed in, measure radial displacement δZA'
And δZB'；The relatively radially displacement d that cutter is generated relative to handle of a knife by radial loaded power3, cutter is relative to handle of a knife by radial loaded
Angular displacement d occurs for power4The displacement d of generation4' and the flexible deformation d that is generated by radial loaded power of cutter5；
The distance for measuring handle of a knife projecting end end to the first radial displacement transducer is l4, handle of a knife projecting end end to second
The distance of radial displacement transducer is l5, solve the relatively radially displacement d of cutter-cutter handle combining part3With angular displacement d4：
Radial loaded power F is measured by measuring devicez' and δZA”、δZB" functional relation, in conjunction with above-mentioned formula obtain it is radial plus
Carry power Fz' with relatively radially displacement d3Relationship, further derivation obtains the radial rigidity K of cutter-cutter handle combining part2：
Radial loaded power F is measured by measuring devicez' and δZA”、δZB" relationship, had according to bemding moment formula
M2=FZ'·l6
Wherein l6It is distance of the handle of a knife projecting end end to radial loaded power impetus；Moment M is obtained in conjunction with above-mentioned formula2
With angular displacement d4Relationship, further derivation obtains the angular rigidity K of cutter-cutter handle combining part2：
The present invention may be implemented the test of a plurality of types of cutter-handle of a knifes-axis system Static stiffness, and when test is convenient for disassembly and assembly,
The data of acquisition can be shown by control cabinet digital display meter and be recorded, and can also be output on computer and be shown analysis, to studying knife
The static properties of tool-handle of a knife-axis system is of great significance.
Description of the drawings
Fig. 1 is simulation test analytical equipment schematic diagram；
Fig. 2 is simulation test analytical equipment structural schematic diagram；
Fig. 3 is axial rigidity test schematic diagram；
Fig. 4 is handle of a knife-Spindle Static rigidity test schematic diagram；
Fig. 5 is cutter-handle of a knife Static stiffness test schematic diagram；
Fig. 6 is that handle of a knife-main shaft engaging portion radial rigidity and angular rigidity solve schematic diagram；
Fig. 7 is that cutter-cutter handle combining part radial rigidity and angular rigidity solve schematic diagram.
Specific implementation mode
Specific implementation mode is described in detail below.
As shown in Fig. 2, a kind of engaging portion Static stiffness simulation test analytical equipment of cutter-handle of a knife-axis system, including：
It tests babinet (1), test babinet protecting screen (2), analog main shaft front end (3), analog main shaft rear end (4), pull rod (5), axially add
Nut (6), disk spring (7), washer A (8), washer B (9), plane bearing (10), broaching tool structure (11), axial displacement is carried to pass
Sensor bracket (12), radial displacement transducer holder (13), axial compressive force sensor (14), radial pressure sensor (15), knife
Handle (16), cutter (17), radial loaded seat (18), radial loaded screw (19), head (20), shaft position sensor A
(21), shaft position sensor B (22), radial displacement transducer A (23), radial displacement transducer B (24).
Test babinet (1) first side is embedded and is fixed with analog main shaft head front end (3), and extends in inside test babinet
Analog main shaft head front end (3) part on be provided with handle of a knife (16), form handle of a knife-main shaft engaging portion；Handle of a knife (16) other side
Projecting end on cutter (17) can be set, form handle of a knife-cutter engaging portion.Handle of a knife (16) the taper shank portion is located at main tapping front end
(3) in internal taper hole, and analog main shaft head front end (3) setting broaching tool structure (11), it is fixed with the handle of a knife (16).
It partly connect, and is simulating with analog main shaft head rear end (4) in the analog main shaft head front end (3) in the external face of test box
Main tapping rear end (4) is bonded with the first side of axial compressive force sensor (14)；Pull rod (5) sequentially passes through axial compressive force sensor
(14), analog main shaft head rear end (4), analog main shaft head front end (3), and its first end contacts the handle of a knife-main shaft engaging portion；
Axially loaded nut (6) is arranged in pull rod (5) second end；Rotary motion is prevented to be transmitted to the plane axis of axial compressive force sensor (14)
It holds (10), setting is in the second face of axial compressive force sensor (14), and washer A (8) and washer B (9) is arranged in the plane axis
Hold the both sides of (10)；In the process to the disk spring (7) of the lasting requirement of make-up, setting exists for washer A (8) and washer B (9) use
Between the washer A (8) and axially loaded nut (6)；The disk spring (7), washer A (8), washer B (9), plane bearing
(10) it is all sleeved on the pull rod (5).
Inserted with radial loaded seat (18), the radial loaded seat (18) is interior to be provided with radial add for the test top of the box
Screw (19) is carried, radial pressure is passed to through radial pressure sensor (15) and is arranged in diameter by rotation radial loaded screw (19)
To the head (20) of load seat (18) bottom, the head (20) applies radial add to the handle of a knife (16) or cutter (17)
Carry power；The radial pressure sensor (15) for measuring radial loaded power, be set to radial loaded screw (19) and head (20) it
Between.
Radial displacement transducer (23) (24) is arranged in the downside of the handle of a knife (16) or cutter (17), and the displacement measured is knife
Displacement of the handle (16) relative to main tapping front end (3) or cutter (17) relative to handle of a knife (16)；Up and down the two of the handle of a knife (16)
Axial sensor (21) (22) is arranged in side, and detection handle of a knife (16) is during tightening force increases to the axially inclined of handle of a knife (16)
Situation is detected；In analog main shaft head front end (3) setting shaft position sensor holder (12), the axial position is supported
Displacement sensor (21) (22)；In analog main shaft head front end (3) setting radial displacement transducer holder (13), make to be supported by it
The radial displacement transducer (24) (25) it is removable.
As shown in Fig. 1, this device also includes control cabinet digital display meter and computer, is filled by adjusting axial and radial loaded
It sets, measures engaging portion misalignment, shown by control cabinet digital display meter；Or be transmitted on computer and analyzed by data transmission device,
The Static stiffness of handle of a knife-main shaft engaging portion under different tightening force states, different cutters-handle of a knife length of fit, different knives is calculated
Has the Static stiffness of interference volume bottom tool-cutter handle combining part.
It tests on babinet (1) and analog main shaft head (3) (4), the handle of a knife of different size model is installed according to test specific requirement
(16) and cutter (17), handle of a knife used in the preferred embodiment of the present invention is HSK63 series handle of a knife (16).
As shown in Fig. 3, when the present apparatus carries out the test of handle of a knife (16)-main shaft (3) engaging portion axial rigidity, cutter is not clamped
(17), do not apply radial pressure, unclamp axially loaded nut (6) by tightening, different size of tension is applied to handle of a knife (16)
Power, tightening force size are measured by axial compressive force sensor (14).Pad can be reduced using disk spring (7) in axial loading device
Enclose the lasting requirement to make-up during (8) (9) use.Using plane bearing (10), primarily to preventing axially loaded spiral shell
In female (6) rotary course, rotary motion is transmitted to axial compressive force sensor (14).Shaft position sensor holder (12) is fixed on
Main tapping front end (3), so the displacement that shaft position sensor (21) (22) measures is handle of a knife (16) relative to main tapping front end
(3) axial displacement namely handle of a knife (16)-main shaft (3) engaging portion axial displacement, it includes handle of a knife that can ensure the displacement so only
(16) axial deformation of-main shaft (3) engaging portion will not influence data accuracy because other component deforms.It is axial using two sets
Displacement sensor (21) (22), can detect handle of a knife (16) during tightening force increases whether run-off the straight, ensure tense
Power is along axis direction.Axial compressive force size can be shown with the data that axial displacement value measures on control cabinet digital display meter or computer
Show.By axially loaded power-axial displacement relationship, the relationship of axially loaded power-engaging portion axial rigidity can be obtained.
As shown in Fig. 4, when the present apparatus carries out handle of a knife (16)-main shaft (3) engaging portion radial rigidity and angular rigidity test, no
Cutter (17) is clamped, adjusts the pressure position of radial loading device, it is made to apply radial pressure to handle of a knife (16) projecting end.Rotation
After axially loaded nut (6) determines an axial tightening power, by adjusting radial loaded screw (19), make head (20) with not
Handle of a knife (16) is acted on size pressure, so that engaging portion is generated radial displacement and angular displacement, radial pressure size is by radial pressure
Sensor (15) measures.
As shown in Fig. 5, when the present apparatus carries out cutter (17)-handle of a knife (16) engaging portion radial rigidity and angular rigidity test,
Cutter (17) is clamped, adjusts the pressure position of radial loading device, it is made to apply radial pressure to cutter (17) projecting end.It determines
After one cutter (17) handle of a knife (16) clamping length, by adjusting radial loaded screw (19), make head (20) with different big
Small pressure acts on cutter (16), and engaging portion is made to generate displacement, and radial pressure size is measured by radial pressure sensor (15).
Using radial loaded seat (18), radial loaded screw (19) may be implemented and head (20) is located at the same axis
On, and can ensure that radial pressure acts perpendicularly to the central axes of cutter (17) and handle of a knife (16).Radial displacement transducer holder
(13) it is fixed on main tapping front end (3), so the displacement that radial displacement transducer (23) (24) measures is cutter (17) and handle of a knife
(16) displacement relative to main tapping front end (3) can ensure that data accuracy will not be influenced because other component deforms in this way.
Using two sets of radial displacement transducers (23) (24), the radial displacement and angular displacement of engaging portion can be decomposited, to calculate
The radial rigidity and angular rigidity of engaging portion.The data that radial pressure size and radial displacement value measure can in control cabinet digital display meter or
It is shown on computer.By radial loaded power-radial displacement relationship, the pass of radial loaded power-engaging portion radial rigidity can be obtained
System；By moment of flexure-angular displacement relationship, the relationship of moment of flexure-engaging portion angular rigidity can be obtained.
By adjusting axially loaded nut (6), different cutter (17) interference volumes of selection and cutter (17) handle of a knife (16) cooperation
Length can obtain radial loaded power-engaging portion radial rigidity in conjunction with above-mentioned engaging portion radial rigidity and angular rigidity test method
Relationship and moment of flexure-engaging portion angular rigidity relationship.
The radial rigidity and angular rigidity solution procedure of handle of a knife (16)-main shaft (3) engaging portion are described in detail below.
When measuring the radial rigidity and angular rigidity of handle of a knife (16)-main shaft (3) engaging portion, cutter is not clamped in handle of a knife (16)
(17)。
As shown in Fig. 6, handle of a knife (16)-main shaft (3) engaging portion coordinate system O-XYZ, radial loaded power F are establishedzIt acts on
Handle of a knife (16) projecting end measures radial displacement δ by radial displacement transducer A (23), radial displacement transducer B (24)ZAAnd δZB,
The displacement is made of three parts：Handle of a knife (16) is by radial loaded power FzThe relatively radially displacement d generated0, handle of a knife (16) radially added
It carries power and angular displacement d occurs1The displacement d of generation1' and the flexible deformation d that is generated by radial loaded power of handle of a knife (16)2, i.e.,：
Since handle of a knife (16) taper shank portion is shorter and is located in main shaft (3) head, it is assumed here that handle of a knife (16) taper shank portion does not occur
Flexural deformation, therefore the relatively radially displacement d of only handle of a knife (16)-main shaft (3) engaging portion0With angular displacement d1。
According to above-mentioned it is assumed that calculating the flexible deformation d of handle of a knife (16) projecting end by finite element software2。
The distance for measuring O points to radial displacement transducer A (23) is l1, the distance of O points to sensor B is l2。
By geometrical relationship, know：
Solve the relatively radially displacement d of handle of a knife (16)-main shaft (3) engaging portion0With angular displacement d1：
Radial loaded power F is measured by measuring devicezWith δZA、δZBFunctional relation, obtain radial loaded in conjunction with above-mentioned formula
Power FzWith relatively radially displacement d0Functional relation, further derivation obtains the radial rigidity of handle of a knife (16)-main shaft (3) engaging portion
K0：
Radial loaded power F is measured by measuring devicezWith δZA、δZBFunctional relation, M is had according to bemding moment formula1=FZ·l3
(l3:Distance of the O points to radial loaded power impetus), obtain moment M in conjunction with above-mentioned formula1With angular displacement d1Functional relation, into
One step derivation obtains the angular rigidity K of handle of a knife (16)-main shaft (3) engaging portion1：
The radial rigidity and angular rigidity solution procedure of cutter (17)-handle of a knife (16) engaging portion are described in detail below.
After cutter (17) is clamped in handle of a knife (16), the position of adjustment radial loaded seat (18) makes its radial compression applied in knife
Have (17), cutter (17) is with handle of a knife (16) all because stress is subjected to displacement.As shown in Fig. 7, when radial load acts on cutter
(17) when, handle of a knife (16) stressing conditions are equivalent to the radial loaded power F of the above situation at this timezAct on handle of a knife (16) projecting end end
It holds, at this time l3Equal to the distance of O to handle of a knife (16) projecting end end, the misalignment of handle of a knife (16) is with reference to the above situation point at this time
Analysis.
Radial displacement transducer B (24) is first placed in handle of a knife (16) projecting end end, measures handle of a knife (16) projecting end end
Radial displacement δZBAfterwards, then by radial displacement transducer A (23), radial displacement transducer B (24) it is placed in cutter (17) part, measured
Radial displacement δZA' and δZB', then cutter (17) is relative to the radial displacement of handle of a knife (16)
Displacement δZA" and δZB" be made of three parts：The phase that cutter (17) is generated relative to handle of a knife (16) by radial loaded power
To radial displacement d3, cutter (17) is relative to handle of a knife (16) by radial loaded power generation angular displacement d4The displacement d of generation4' and cutter
(17) the flexible deformation d generated by radial loaded power5, i.e.,：
Because cutter (17) holding portion is in handle of a knife (16), and holding portion is shorter, so holding portion is sent out
Raw flexible deformation can be ignored, i.e. the flexible deformation of cutter (17) only occurs in cutter (17) projecting end.
The flexible deformation d that cutter (17) part occurs can be calculated by finite element software5。
The distance for measuring handle of a knife (16) projecting end end to sensors A is l4, handle of a knife (16) projecting end end to sensor B
Distance be l5。
By geometrical relationship, know：
Solve the relatively radially displacement d of cutter (17)-handle of a knife (16) engaging portion3With angular displacement d4：
Radial loaded power F is measured by measuring devicez' and δZA”、δZB" functional relation, in conjunction with above-mentioned formula obtain it is radial plus
Carry power Fz' with relatively radially displacement d3Relationship, further derivation obtains the radial rigidity of cutter (17)-handle of a knife (16) engaging portion
K2：
Radial loaded power F is measured by measuring devicez' and δZA”、δZB" relationship, M is had according to bemding moment formula2=FZ'·l6
(l6:Distance of handle of a knife (16) the projecting end end to radial loaded power impetus), obtain moment M in conjunction with above-mentioned formula2With angular displacement
d4Relationship, further derivation obtains the angular rigidity K of cutter (17)-handle of a knife (16) engaging portion2：
Although present disclosure is discussed in detail by above preferred embodiment, but it should be appreciated that above-mentioned
Description is not considered as limitation of the present invention.After those skilled in the art have read the above, for the present invention's
A variety of modifications and substitutions all will be apparent.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (10)
1. a kind of engaging portion Static stiffness simulation test analytical equipment of cutter-handle of a knife-axis system, which is characterized in that include：
Babinet (1) is tested,
The test babinet first side is embedded and is fixed with analog main shaft head front end (3), and extends in inside test babinet
It is provided with handle of a knife (16) on analog main shaft head front end (3) part, forms handle of a knife-main shaft engaging portion；
It is partly connect with analog main shaft head rear end (4) in the analog main shaft head front end (3) in the external face of test box, and described
Analog main shaft head rear end (4) setting applies axial loading device of the axial force to the handle of a knife-main shaft engaging portion；
The test top of the box is embedded and fixes the radial loading device for applying radial load to the handle of a knife-main shaft engaging portion；
The first radial displacement transducer (23), the second radial displacement transducer (24), detection is arranged in the downside of the handle of a knife (16)
Displacement of the handle of a knife (16) relative to main tapping front end (3).
2. the engaging portion Static stiffness simulation test analytical equipment of cutter-handle of a knife-axis system as described in claim 1, special
Sign is that the axial loading device includes：Pull rod (5), axially loaded nut (6), plane bearing (10), axial compressive force sensing
Device (14), disk spring (7), washer A (8) and washer B (9)；
Axial compressive force sensor (14) first side is connect with analog main shaft head rear end (4)；
The pull rod (5) sequentially passes through disk spring (7), washer A (8), plane bearing (10), washer B (9), axial compressive force and passes
Behind sensor (14), analog main shaft head rear end (4), analog main shaft head front end (3), first end contacts analog main shaft head front end
(3) the broaching tool structure (11) being arranged；
Second end of axially loaded nut (6) setting in the pull rod (5)；
The plane bearing (10) prevents rotary motion to be transmitted to axial compressive force sensor (14), and the disk spring (7) is using
The washer A (8) and washer B (9) are tightened in the process.
3. the engaging portion Static stiffness simulation test analytical equipment of cutter-handle of a knife-axis system as claimed in claim 2, special
Sign is that first axis displacement sensor (21), the second shaft position sensor is arranged in the both sides up and down of the handle of a knife (16)
(22), handle of a knife (16) is detected during tightening force increases to the axially inclined situation of handle of a knife (16).
4. the engaging portion Static stiffness simulation test analytical equipment of cutter-handle of a knife-axis system as claimed in claim 3, special
Sign is, in analog main shaft head front end (3) setting shaft position sensor holder (12), supports the first axis displacement
Sensor (21), the second shaft position sensor (22)；Radial displacement transducer holder is arranged in analog main shaft head front end (3)
(13), support and mobile first radial displacement transducer (23), the second radial displacement transducer (24).
5. the engaging portion Static stiffness simulation test analytical equipment of cutter-handle of a knife-axis system as claimed in claim 4, special
Sign is, further includes inside the test babinet：Cutter (17), composition are set on the projecting end of handle of a knife (16) other side
Handle of a knife-cutter engaging portion；
First radial displacement transducer (23), the second radial displacement transducer (24) also are located under the cutter (17)
Side, displacement of the detection cutter (17) relative to main tapping front end (13)；
The radial loading device further includes：
Radial loaded seat (18),
It is provided with radial loaded screw (19), the first end of the radial loaded screw (19) in the radial loaded seat (18)
It is exposed at outside the test babinet (1), first side of the setting in radial pressure sensor (15) on second end；
The second side setting head (20) of the radial pressure sensor (15), the head (20) is to the handle of a knife
(16) or cutter (17) applies radial loaded power.
6. the engaging portion Static stiffness simulation test analytical equipment of cutter-handle of a knife-axis system as claimed in claim 5, special
Sign is, installs analog main shaft head front end (3), the simulation of different size model on test babinet (1) according to test specific requirement
Main tapping rear end (4), handle of a knife (16) and cutter (17)；
Described device also includes that control cabinet digital display meter and computer measure engaging portion by adjusting axial direction and radial loading device
Misalignment is shown by control cabinet digital display meter；Or
It is transmitted on computer and is analyzed by data transmission device, handle of a knife-main shaft engaging portion under different tightening force states is calculated
Static stiffness, different cutters-handle of a knife length of fit, different cutter interference volume bottom tool-cutter handle combining part Static stiffness.
7. the engaging portion Static stiffness simulation test analytical equipment of cutter-handle of a knife-axis system as claimed in claim 2, special
Sign is that handle of a knife (16) the taper shank portion is located in main tapping front end (3) internal taper hole；The drawing of analog main shaft head front end (3)
Knife structure (11) is fixed with the handle of a knife (16), applies pulling force to handle of a knife (16), to tense handle of a knife-main shaft engaging portion.
8. a kind of engaging portion Static stiffness simulation test analysis method of cutter-handle of a knife-axis system, which is characterized in that exploitation right
Profit requires the engaging portion Static stiffness simulation test analytical equipment of any one of 3-7 cutter-handle of a knife-axis systems, carries out
When handle of a knife (16)-main shaft (3) engaging portion axial rigidity test, cutter (17) is not clamped, does not apply radial pressure；Tighten release axis
To load nut (6), different size of tightening force is applied to handle of a knife (16), tightening force size is surveyed by axial compressive force sensor (14)
?；First axis displacement sensor (21), the second shaft position sensor (22) measure handle of a knife (16) relative to main tapping front end
(3) axial displacement；By axially loaded power-axial displacement relationship, the relationship of axially loaded power-engaging portion axial rigidity is obtained.
9. the engaging portion Static stiffness simulation test analysis method of cutter-handle of a knife-axis system as claimed in claim 8, special
Sign is, using the engaging portion Static stiffness simulation test analytical equipment of cutter-handle of a knife-axis system described in claim 5, carries out
When handle of a knife (16)-main shaft (3) engaging portion radial rigidity and angular rigidity are tested, cutter (17) is not clamped, axial rotary loads nut
(6) an axial tightening power is determined；The pressure position for adjusting radial loading device applies radial pressure to handle of a knife (16) projecting end；
By adjusting radial loaded screw (19), making head (20), radial compression applied makes combination in handle of a knife (16) in different sizes
Portion generates radial displacement and angular displacement；
Establish handle of a knife-main shaft engaging portion coordinate system O-XYZ, radial loaded power FzWhen acting on handle of a knife (16) projecting end, meet following
Formula：
Wherein by the first radial displacement transducer (23), the second radial displacement transducer (24) measures radial displacement is δZA、δZB；Knife
Handle (16) is by radial loaded power FzThe relatively radially displacement d generated0；By radial loaded power angular displacement d is occurred for handle of a knife (16)1It generates
Displacement d1' and the flexible deformation d that is generated by radial loaded power of handle of a knife (16)2；
It is assumed that handle of a knife (16) taper shank portion does not occur bending and deformation, therefore the relatively radially position of only handle of a knife-main shaft engaging portion
Move d0With angular displacement d1；
According to above-mentioned it is assumed that calculating the flexible deformation d of handle of a knife (16) projecting end by finite element software2；
Then there is following formula：
Wherein, the distance for measuring O points to the first radial displacement transducer (23) is l1；O points are to the second radial displacement transducer (24)
Distance be l2；
Radial loaded power F is measured by measuring devicezWith δZA、δZBFunctional relation, obtain radial loaded power F in conjunction with above-mentioned formulaz
With relatively radially displacement d0Functional relation, further derivation obtains the radial rigidity K of handle of a knife-main shaft engaging portion0：
Radial loaded power F is measured by measuring devicezWith δZA、δZBFunctional relation, M is had according to bemding moment formula1=FZ·l3；l3It is O
Distance of the point to radial loaded power impetus；Moment M is obtained in conjunction with above-mentioned formula1With angular displacement d1Functional relation, further ask
It leads to obtain the angular rigidity K of handle of a knife-main shaft engaging portion1：
10. the engaging portion Static stiffness simulation test analysis method of cutter-handle of a knife-axis system as claimed in claim 8, special
Sign is that when carrying out cutter (17)-handle of a knife (16) engaging portion radial rigidity and angular rigidity test, cutter (17) is clamped in handle of a knife (16)
Afterwards, the position of mobile radial loading device, makes it apply radial pressure to cutter (17) projecting end；Determine a cutter (17) handle of a knife
(16) after clamping length, by adjusting radial loaded screw (19), making head (20), pressure acts on knife in different sizes
Have (16), engaging portion is made to generate displacement；
Radial loaded power FzWhen acting on cutter (17), meet following formula：
The second radial displacement transducer (24) is first wherein placed in handle of a knife (16) projecting end end, measures handle of a knife (16) projecting end end
Hold radial displacement δZBAfterwards, then by the first radial displacement transducer (23), the second radial displacement transducer (24) it is placed in cutter (17)
Part measures radial displacement δZA' and δZB'；The relatively radially position that cutter (17) is generated relative to handle of a knife (16) by radial loaded power
Move d3, cutter (17) is relative to handle of a knife (16) by radial loaded power generation angular displacement d4The displacement d of generation4' and cutter (17) by diameter
The flexible deformation d generated to loading force5；
The distance for measuring handle of a knife (16) projecting end end to the first radial displacement transducer (23) is l4, handle of a knife (16) projecting end end
It is l to hold the distance to the second radial displacement transducer (24)5, solve the relatively radially displacement d of cutter-cutter handle combining part3With angle position
Move d4：
Radial loaded power F is measured by measuring devicez' and δZA”、δZB" functional relation, obtain radial loaded power in conjunction with above-mentioned formula
Fz' with relatively radially displacement d3Relationship, further derivation obtains the radial rigidity K of cutter-cutter handle combining part2：
Radial loaded power F is measured by measuring devicez' and δZA”、δZB" relationship, had according to bemding moment formula
M2=FZ'·l6 (8)
Wherein l6It is distance of handle of a knife (16) the projecting end end to radial loaded power impetus；Moment M is obtained in conjunction with above-mentioned formula2
With angular displacement d4Relationship, further derivation obtains the angular rigidity K of cutter-cutter handle combining part2：
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