CN108917581B - The distance over bar detection device and its detection method of broaching tool - Google Patents
The distance over bar detection device and its detection method of broaching tool Download PDFInfo
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- CN108917581B CN108917581B CN201810355796.0A CN201810355796A CN108917581B CN 108917581 B CN108917581 B CN 108917581B CN 201810355796 A CN201810355796 A CN 201810355796A CN 108917581 B CN108917581 B CN 108917581B
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- sleeve
- support frame
- distance over
- over bar
- broaching tool
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
Abstract
The invention discloses the distance over bar detection devices and its detection method of broaching tool, belong to field of machining, the mobile platform of the support frame is fixed by the way that support frame in long strip and can accommodating is arranged, a pair of vertically corresponding sleeve being spaced apart is respectively set at the both ends of support frame, it is assembled by the position and correspondence that are preferably provided with four sleeves and fixes two groups of displacement sensors, complete the detection of broaching tool distance over bar by school zero and detection process by two groups of displacement sensors.In broaching tool distance over bar detection device of the invention and its detection method, the structure of detection device is simple, it is convenient to assemble, the step of detection method, is easy, and strong operability then can accurately and efficiently complete the detection of broaching tool distance over bar, promote the efficiency of distance over bar detection, the error of distance over bar detection is reduced, the economic cost of distance over bar detection is reduced, there is splendid application and popularization value.
Description
Technical field
The invention belongs to field of machining, and in particular to the distance over bar detection device and its detection method of broaching tool.
Background technique
With the continuous development of mechanical manufacturing technology, efficiency and precision for machining also proposed new requirement.
In field of machining, broaching tool is a kind of shaping jig for broaching, is usually provided with multiple rows of knife in cutter peripheral surface
Tooth, and the size and shape of each row's cutter tooth often successively increase and change from incision end to cutting out end, and then broaching tool does broaching fortune
When dynamic, each cutter tooth just cuts certain thickness material from workpiece, finally obtains required size and shape, and broaching tool is common
In processing circular hole, splined hole, keyway or for processing plane etc. in batch or in mass production.
Spline hole machined is a kind of form relatively conventional in broaching tool application, and the dimensional accuracy of broaching tool directly affects spline
The formed precision in hole guarantees its machining accuracy so needing in broaching tool process as far as possible.In involute spline broach
In process, needs constantly to measure to the basis as reconditioning forming grinding wheel broaching tool tooth shape, be measured in broaching tool toughness
In the process, distance over bar is an important indicator for reflecting involute spline broach tooth shape.
In the prior art, the distance over bar measurement of involute spline broach generallys use length bar and measures, but is passing
In the distance over bar measurement process of system, often in such a way that manpower is helped or plasticine is fixed, without for length bar to be fixed
Fixture between broaching tool blade；There are instantaneitys and unstability for the form that manpower is helped, and are often difficult to grasp what length bar was put
Optimum position causes distance over bar measurement biggish error occur, and is easy in the form of plasticine is fixed because of plasticine
Deformation then leads to the variation of length bar position, leads to the generation of measurement error, and this form is not in the case where dismantling broaching tool
Operation difficulty is very big, influences the measurement efficiency of distance over bar；In addition, in traditional distance over bar measurement process, since its cubing is mostly
Often there is certain error in reading in mechanical structure, stability is poor, and the structure after reading U-shaped needs to be manually entered number
Control system, then control grinding wheel and carry out reconditioning, cause the efficiency of processing to further decrease, and in this way in order to promote processing efficiency and essence
Degree, generally requires broaching tool and measures in the case where not dismantling on lathe, this is for most of distance over bar in the prior art
Cubing is all difficult to realize, often expensive although also having had already appeared the numerically-controlled machine tool with electronic gauge head automatic measurement, answers
It is larger with limitation.
Summary of the invention
At least one of aiming at the above defects or improvement requirements of the prior art, the present invention provides the distance over bar of broaching tool
Detection device and its detection method are respectively set a pair of perpendicular by the way that support frame in long strip is arranged at the both ends of support frame
The corresponding sleeve being spaced apart upwards, that is, be set to support frame one end first sleeve and second sleeve with to be set to support frame another
The 3rd sleeve and 4th sleeve of one end, first sleeve are set to the top of second sleeve, and 3rd sleeve is set to 4th sleeve
Top, and first sleeve and 4th sleeve are oblique to just and coaxial line, and second sleeve and 3rd sleeve are oblique to just and coaxial
Line, then make two groups of displacement sensors can Corresponding matching into after sleeve, the axis of two groups of displacement sensors intersects at support frame
Above middle part a bit, by the schools zero of two groups of displacement sensors and detect the detection of achievable broaching tool distance over bar, displacement sensing
The positioning of device is fixed accurate, and charge and discharge operations are simple and efficient, can effectively reduce the measurement error of displacement sensor, promotes distance over bar inspection
The efficiency and precision of survey reduce the testing cost of distance over bar detection.
To achieve the above object, one aspect of the present invention provides the distance over bar detection device of broaching tool, for broaching tool across
Stick is put down away from detection, including support frame in long strip with the movement that can be fixed the support frame and it is driven to move on machine tool guideway
Platform, which is characterized in that
It is respectively arranged with a pair of of sleeve on the upper surface at support frame as described above both ends, that is, is set to the of support frame as described above one end
One sleeve and second sleeve and the 3rd sleeve and 4th sleeve for being set to the support frame as described above other end, the axis of two pairs of sleeves
Line is in the same vertical plane above support frame as described above；And
The first sleeve is set to the top of the second sleeve, and the 3rd sleeve is set to the 4th sleeve
The axis of top, the axis of the first sleeve and the 3rd sleeve intersects at the top in the middle part of support frame as described above, and described
The axis collinear of the axis of first sleeve and the 4th sleeve, the axis of the axis of the second sleeve and the 3rd sleeve
Collinearly, after then may make four displacement sensors are corresponding to be assemblied in four sleeves, the axis of four institute's displacement sensors
Line intersects at the top in the middle part of support frame as described above, to measure for the distance over bar of the broaching tool.
As a further improvement of the present invention, the mobile platform corresponds to the accommodating that support frame as described above offers strip
Slot, to correspond to accommodating wherein for support frame as described above and realize the longitudinal positioning of the support frame.
As a further improvement of the present invention, tapped through hole is vertically offered on support frame as described above, the corresponding screw thread is logical
Hole offers counterbore on the mobile platform, then corresponds to the tapped through hole and is provided with the lead screw that can be threadedly coupled with it,
And after the lead screw and the tapped through hole Corresponding matching in the embeddable counterbore in end of the lead screw, support frame as described above is realized
Positioning in transverse direction, and can by the lead screw the rotation in the tapped through hole realize support frame as described above it is vertical on liter
Drop.
As a further improvement of the present invention, the end of the lead screw is provided with wheel disc, it can by rotating the wheel disc
Realize lifting of the support frame as described above in the accommodation groove.
As a further improvement of the present invention, corresponding two pairs of sleeves are vertically provided with connection floor, i.e., first respectively
The first sleeve and the second sleeve can be fixed on support frame as described above respectively by floor and the second floor, first floor
The upper surface of one end, it is another that the 3rd sleeve and the 4th sleeve can be fixed on support frame as described above respectively by second floor
The upper surface of one end.
As a further improvement of the present invention, institute's displacement sensors include that can correspond to nest into the sleeve and fix
Sensor sleeve and iron core；
One end of the iron core is provided with the associated component for distance over bar detection, and the other end is movably connected in the biography
In sensor sleeve and can in the sensor sleeve reciprocal telescopic, then in the iron core away from the one of the sensor sleeve
End is provided with hook, and one end of the hook is provided with link in the sensor sleeve, so that the iron core
It is collapsible into the hook after the sensor sleeve and can correspond to and hang on the link.
As a further improvement of the present invention, the bottom of the mobile platform corresponds to the machine tool guideway and offers sliding
Slot, the mobile platform can the sliding groove Corresponding matching on the machine tool guideway and can be along the length direction of the machine tool guideway
It moves back and forth, to complete the detection of the broaching tool not coaxial position distance over bar.
As a further improvement of the present invention, it is provided in the axial direction with and cracks on the periphery of the sleeve, and corresponding this cracks
It is provided with threaded connector, by the elastic control that the size of cracking can be achieved of the threaded connector, to realize institute
Quick despatch and fixation of the displacement sensors in the sleeve.
Another aspect of the present invention, provide a kind of broaching tool according to distance over bar detection device carry out broaching tool across
Stick distance detecting method, its step are as follows:
S1: after support frame as described above is correspondingly arranged with the mobile platform, four institute's displacement sensors correspondences are fitted into
It is in four sleeves and fixed, and mobile platform correspondence is placed on the machine tool guideway, it realizes and the broaching tool
The correspondence of position；
S2: by institute's displacement sensors end abutment in the first sleeve and the 4th sleeve, then by described
Institute's displacement sensors end abutment in one sleeve and the 4th sleeve is passed by two groups of oblique displacements being oppositely arranged
Sensor is respectively completed the acquisition of two groups of reference datas；
S3: by the end abutment of institute's displacement sensors in four sleeves be pressed on the broaching tool blade it
Between, the acquisition of two groups of displacement datas is respectively completed by two groups of oblique institute's displacement sensors being oppositely arranged；
S4: the displacement data as described in two groups respectively with reference data comparing calculation described in corresponding two groups, to complete institute
State the measurement of broaching tool distance over bar.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, have below beneficial to effect
Fruit:
(1) broaching tool distance over bar detection device of the invention, by the way that support frame in long strip is arranged, the two of support frame
A pair of vertically corresponding sleeve being spaced apart is respectively set in end, that is, be set to support frame one end first sleeve and second set
Cylinder is set to the top of second sleeve, third with the 3rd sleeve and 4th sleeve for being set to the support frame other end, first sleeve
Sleeve is set to the top of 4th sleeve, and first sleeve and 4th sleeve are oblique to just and coaxial line, second sleeve and third
Sleeve it is oblique to just and coaxial line, then make two groups of displacement sensors can Corresponding matching into after sleeve, two groups of displacement sensors
Axis intersect at top in the middle part of support frame a bit, by the schools zero of two groups of displacement sensors and detect achievable broaching tool across stick
Away from detection, the positioning of displacement sensor is fixed accurate, and charge and discharge operations are simple and efficient, can effectively reduce the measurement of displacement sensor
Error promotes the efficiency and precision of distance over bar detection, reduces the testing cost of distance over bar detection；
(2) broaching tool distance over bar detection device of the invention, by the accommodating for opening up accommodating support frame on a mobile platform
Slot, and respectively corresponded in support frame and accommodation groove and open up tapped through hole and counterbore, then lead screw Corresponding matching is set wherein, not only
The positioning of support frame on a mobile platform is effectively realized, the lifting of support frame can be also realized by the rotation of lead screw, thus suitable
The process in detection device school zero and detection is answered, the precision and efficiency of distance over bar detection are further promoted；
(3) broaching tool distance over bar detection method of the invention, step is simple, and it is convenient to operate, and can utilize the drawing in the present invention
Knife distance over bar detection device, is completed rapidly and accurately the detection of broaching tool distance over bar, effectively promotes the efficiency and essence of distance over bar detection
Degree reduces the cost of broaching tool distance over bar detection；
(4) broaching tool distance over bar detection device and its detection method of the invention, apparatus structure is simple, and setting is easy, side
The step of method, is succinct, it is easy to accomplish, the assembly and fixation of four displacement sensors are completed by four sleeves being correspondingly arranged,
Two distance over bar data at the same axial location of broaching tool, the detection efficiency and detection essence of distance over bar can be obtained by one-time detection
Degree is high, greatly reduces the measurement error generated in existing distance over bar detection process, reduces the economic cost of distance over bar detection,
Specific preferable application value.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the distance over bar detection device of broaching tool in the embodiment of the present invention；
Fig. 2 is the overall structure side view of the distance over bar detection device of broaching tool in the embodiment of the present invention；
Fig. 3 is the schematic diagram of the distance over bar detection device fit on displacement sensor of broaching tool in the embodiment of the present invention；
Fig. 4 is the composed structure schematic diagram of displacement sensor in the embodiment of the present invention；
Fig. 5 is the schematic diagram of displacement sensor and the measurement of broaching tool Corresponding matching in the embodiment of the present invention；
Fig. 6 is the structure principle chart of displacement sensor in the embodiment of the present invention；
Fig. 7 is the distance over bar detection device of broaching tool in the embodiment of the present invention and the matching operation schematic diagram of broaching tool；
In all the appended drawings, same appended drawing reference indicates identical technical characteristic, specifically: 1. support frames, 2. is mobile
Platform, 3. displacement sensors, 3 (a) first sensors, 3 (b) second sensors, 3 (c) 3rd sensors, 3 (d) the 4th are passed
Sensor, 301. sensor sleeves, 302. iron cores, 303. bulb length bars, 304. miniature drill chuck heads, 305. hooks, 306. links；4.
Sleeve, 4 (a) first sleeves, 4 (b) second sleeves, 4 (c) 3rd sleeves, 4 (d) 4th sleeves；5. lead screw, 501. screw threads
Through-hole, 502. counterbores, 503. wheel discs；6. broaching tool, 7. machine tool guideways, 8. connection floors, 8 (a) the first floors of, 8 (b) the second ribs of
Plate.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
In addition, as long as technical characteristic involved in the various embodiments of the present invention described below is each other not
Constituting conflict can be combined with each other.
The overall structure of the distance over bar detection device of broaching tool is as shown in Figures 1 and 2 in the preferred embodiment of the present invention, excellent
Choosing includes support frame 1 and mobile platform 2, is provided with multiple sleeves 4 for accommodating displacement sensor 3, respective numbers on support frame 1
Displacement sensor 3 can Corresponding matching into sleeve 4, to carry out the measurement of 6 distance over bar of broaching tool.
Specifically, as shown in fig. 1, the elongated structure of support frame 1 in preferred embodiment, bottom are rectangular-shape
Elongate configuration, mobile platform 2 are correspondingly arranged with support frame 1, corresponded on upper surface support frame 1 offer it is in long strip recessed
Slot, as the accommodation groove of support frame 1, the bottom of support frame 1, which can be correspondingly embedded in the accommodation groove, realizes positioning；Further, it draws
Knife 6 in application, often fix by both ends, and machine tool guideway 7 is provided below it, as shown in Figure 7, so can be by distance over bar
Detection device be arranged on machine tool guideway, by movement of the distance over bar detection device on machine tool guideway realize broaching tool 6 everybody
Set the measurement of distance over bar；It is further preferred that offering axis and above-mentioned accommodation groove axis in the bottom plane of mobile platform 2
Vertical sliding groove, with to for mobile platform 2 can machine tool guideway 7 on Corresponding matching, and it is past along the length direction of machine tool guideway 7
It is multiple mobile, support frame 1 can be driven reciprocating along the length direction of machine tool guideway 7 by mobile platform 2, then measure broaching tool
6 distance over bar everywhere.
Further, 1 both ends of support frame in the preferred embodiment of the present invention are respectively set there are two sleeve 4, that is, are set to
The first sleeve 4 (a) and second sleeve 4 (b) of 1 one end of support frame, and the 3rd sleeve 4 being set on 1 other end of support frame
(c) it is arranged in the same vertical plane with 4th sleeve 4 (d), four sleeves 4, and first sleeve 4 (a) setting is at second set
Above 4 (b) of cylinder, 3rd sleeve 4 (c) setting is above 4th sleeve 4 (d)；Further, the axis of first sleeve 4 (a) and
The axis of two sleeves 4 (b) intersects in the top at 1 middle part of support frame, the axis of 3rd sleeve 4 (c) and the axis of 4th sleeve 4 (d)
Line also intersects in the top at 1 middle part of support frame, and the axis collinear of the axis of first sleeve 4 (a) and 4th sleeve 4 (d), and second
The vertical axis of the axis of sleeve 4 (b) and the axis of 3rd sleeve 4 (c), the i.e. sleeve 4 at 1 both ends of support frame along 1 middle part of support frame
Line is symmetrical arranged.In a preferred embodiment of the invention, the corner dimension between two sleeves, 4 axis at 1 both ends of support frame is not done
It is specific to limit, it can carry out according to actual needs preferably, such as 30 °, 60 °, 90 ° or other degrees, i.e. first sleeve 4 (a)
Angle between axis and the axis of second sleeve 4 (b) can be 30 °, 60 °, 90 ° or other degrees.
Further, it is preferable to the sleeve 4 in embodiment offers on the outer periphery crack in the axial direction, as shown in fig. 1,
The size for 4 internal diameter of size control sleeve that can be cracked by control, to accommodate different size of displacement sensor 3；Further
Ground, corresponding above-mentioned crack are provided with threaded connector, and the loosening and locking for being connected through a screw thread part can be achieved to crack the control of size
System, quick despatch and the fixation of displacement sensor 3 can be realized, this connection locking form apply in the prior art more at
Ripe, this will not be repeated here.
It is further preferred that the sleeve 4 for corresponding to 1 both ends of support frame in preferred embodiment is vertically arranged, there are two connect floor
8, i.e. the first floor 8 (a) and the second floor 8 (b), wherein the first floor 8 (a) can be by first sleeve 4 (a) and second sleeve 4
(b) it is fixed on one end of support frame 1, and realizes first sleeve 4 (a) and second sleeve 4 (b) positioning；Second floor 8 (b) can incite somebody to action
3rd sleeve 4 (c) and 4th sleeve 4 (d) are fixed on the other end of support frame 1, and realize the positioning of two sleeves 4.It is preferably implemented
Connection floor 8 in example as shown in Figures 1 and 2, is arranged, certainly, structure is also not limited in attached drawing in certain arc-shaped
It is shown, it can according to actual needs be preferably other form.
Further, it is preferable to which being provided with periphery wall surface in embodiment between support frame 1 and mobile platform 2 offers screw thread
Lead screw 5, positioning and lifting of the support frame 1 on mobile platform 2 are realized with it；Specifically, it is vertically offered on support frame 1
Perforation 1 upper and lower end faces of support frame simultaneously open up internal thread tapped through hole 501, and accommodate the appearance of support frame 1 in mobile platform 2
It sets trench bottom corresponding position and offers blind hole, i.e. counterbore 502, after then support frame 1 corresponds to placement on mobile platform 2, screw thread
Through-hole 501 and counterbore 502 vertically screw in lead screw 5 in tapped through hole 501 from 1 upper surface of support frame to just, and with its lower distal process
It is embedded in counterbore 502 for behind the lower surface of support frame 1, at this point, lead screw 5 also functions to the effect of " pin " and moving support frame 1
Lateral position on moving platform 2 is fixed, i.e. the limitation transverse shifting in accommodation groove of support frame 1；Further, pass through rotary screw
5 can realize vertical lifting of the support frame 1 in accommodation groove, and 4 vertical lifting of sleeve at both ends can be driven by support frame 1 and is carried out
The check of detection device position.
It is further preferred that the upper end of lead screw 5 protrudes from the upper surface of support frame 1, and the end setting of corresponding lead screw 5
Have wheel disc 503, by rotating wheel disk 503 can turn lead screw 5, then drive support frame 1 certain altitude is gone up and down in accommodation groove, it is complete
At the school zero of detection device.
Further, it is preferable to which the displacement sensor 3 in embodiment is as shown in Figure 4, and specifically, it is preferable to the position in embodiment
Displacement sensor 3 includes sensor sleeve 301 and iron core 302, is equipped with spring, coil, coil rack etc. in sensor sleeve 301
Component, as shown in Figure 6, and displacement sensor 3 can be embedded in sleeve 4 by sensor sleeve 301 and realize positioning and fix；Into
One step, one end of iron core 302 is protruded into sensor sleeve 301 and is fixedly connected with its internal spring, then can be by this
Spring flexible and realize that iron core 302 is flexible in sensor sleeve 301；Further, the other end of iron core 302 protrudes from
Sensor sleeve 301 is to be provided with bulb length bar 303 and miniature drill chuck head 304 in the end for abutting with workpiece to be detected；
It is further preferred that being provided with hook 305 in the side close to bulb length bar 303, and accordingly cored in sensor sleeve 301
302 ends stretched out are provided with link 306, are then retracted into sensing after the spring in the compressible sensor sleeve 301 of iron core 302
In device sleeve 301, and make link 306 and hook 305 close, and then can hang over hook 305 on link 306.
Further, it is preferable in embodiment schematic diagram in detection device after 4 displacement sensors 3 of Corresponding matching as schemed
Shown in 3, that is, it is right that first sensor 3 (a), second sensor 3 (b), 3rd sensor 3 (c), the 4th sensor 3 (d) is respectively set
Should match insertion first sleeve 4 (a), second sleeve 4 (b), 3rd sleeve 4 (c), in 4th sleeve 4 (d).It is further preferred that
Displacement sensor 3 in preferred embodiment is structural principle straight line back springing type LVDT displacement sensor as shown in FIG. 6, to connect
Touch measurement, measurement accuracy is high, reliable and stable, and its working principle is preferred are as follows: excitation of the iron core 302 in an alternating magnetic field
Under, it generates and is distributed along 302 central axis of iron core (i.e. the central axis of 301 coil of sensor sleeve) and is symmetrically handed over along iron core 302
Varying magnetic field.At this point, the magnetic induction intensity on coil central axe is the axial distribution function of 302 position of iron core, so two are secondary
The induced electromotive force Es1 and Es2 of coil are also at the function of plunger position, and ideally, the two can become linear function and close
System；Further, by after two secondary coil differentials, it can obtain and be displaced linear secondary output: Es=with iron core
Es1-Es2；Further, 302 leading portion of iron core is provided with screw thread and screw thread is connected with a miniature drill chuck head 304 and can clamp mating
A series of bulb length bars 303 (a series of cylindrical rod of heads with the not equal steel ball of diameter).Then, when measurement, iron core 302
And bulb length bar 303 is pressed between each blade of broaching tool 6 by the spring effect in sensor sleeve；When not measuring, it can lead to
Hook 305 after crossing miniature drill chuck head 304 hooks the link 306 that 301 end of sensor sleeve is equipped with, compression sensor sleeve
301 contained springs are able to iron core 302 in retraction sensor sleeve 301.Displacement sensor 3 in the preferred embodiment of the present invention
It is little with the difference in working principle of displacement sensor 3 in the prior art, the application of displacement sensor 3 in the prior art
It is more mature, so this will not be repeated here.
When further, with the distance over bar of the detection device detection broaching tool in the preferred embodiment of the present invention, corresponding assembly
The detection device for being fixed with 4 displacement sensors 3 is mounted on as shown in Figure 7 on machine tool guideway 7, the hook of each displacement sensor 3
305 are preferably suspended on link 306, then by rotation roulette 503, support frame 1 are made to rise certain altitude, and four positions at this time
The crossing point of axes of displacement sensor 3 is located at the top of broaching tool 6, then stirs the hook 305 on two iron cores 302 of coaxial line respectively,
It stretches out and so that the iron core 302 of two groups of coaxial lines is opposite respectively under the action of the spring with end abutment, i.e. first sensor 3 (a)
It is one group with the 4th sensor 3 (d), the iron core 302 of the two can be abutted mutually, 3rd sensor 3 (c) and second sensor 3 (b)
It is another group, the iron core 302 of the two can also abut in opposite directions, record displacement data A1 when two groups of displacement sensors 3 abut respectively
And B1, above-mentioned two data have been reacted the displacement of first sensor 3 (a) at this time and the 4th sensor 3 (d) respectively and have been sensed with third
The displacement of device 3 (c) and second sensor 3 (b) and, in this, as the reference data of two groups of displacement sensors 3, this process is known as inspection
Survey zero process of school of device；Then, the iron core 302 of two groups of displacement sensors 3 is retracted and is fixed, rotating wheel disk 503, so that branch
Support 1 drops to suitable position, so that the crossing point of axes of two groups of displacement sensors 3 is on the radial section of broaching tool 6, in turn
The hook 305 of two groups of displacement sensors 3 is removed from link 306 respectively, so that the bulb length bar 303 of each displacement sensor 3
It is correctly pressed between the blade of broaching tool 6, as shown in Figure 5, records displacement when two groups of displacement sensors 3 abut respectively at this time
Data A2 and B2；Finally, one group of data A1 and B1 when one group of data A2 and B2 when passing through measurement are individually subtracted school zero,
Obtain two groups of distance over bar.Similarly, broaching tool 6 can be rotated after the iron core 302 for hanging up displacement sensor 3, detect the same axis of broaching tool 6
The distance over bar of different circumferential direction positions on position, and the mobile realization broaching tool 6 of mobile platform 2 not coaxial position distance over bar can be passed through
Measurement, the data measured can be used for making comparisons with normal data instruct complete broaching tool 6 reconditioning processing.
It is further preferred that each displacement sensor 3 can pass through the detection process of 6 distance over bar of broaching tool in preferred embodiment
Numerical control program carries out, and the reading of reference data and displacement data and calculating can be completed by computer program, reduces people
The error that may be introduced in part work and part study number and/or calculating process, promotes the efficiency of detection；And the distance over bar data measured can be further
Corresponding work order is produced to components such as grinding wheels by numerical control program, automatically controls and complete the reconditioning processing of broaching tool 6, it is above-mentioned
It is for the application of Numeric Control Technology and/or computer technology more mature in the prior art, and simultaneously non-present invention is studied
Emphasis, so this will not be repeated here.
Further, the step of detecting with the distance over bar that the distance over bar detection device in preferred embodiment completes broaching tool can
It is preferred that as follows:
S1: support frame 1 is correspondingly placed in the accommodation groove on mobile platform 2, is limited and is connected with lead screw 5, then by two groups
Displacement sensor 3 (i.e. four) correspondence is fixed after fitting into sleeve 4, and the hook 305 of each displacement sensor 3 correspondence is hung over
On ring 306；
S2: the mobile platform 2 for being equipped with support frame 1 being corresponded on the machine tool guideway where being placed in broaching tool to be detected, is led to
The transverse shifting for crossing mobile platform 2 makes broaching tool 6 reach the position for needing to detect distance over bar；
S3: the wheel disc 503 of 5 end of rotational lead screw makes support frame 1 rise certain altitude and makes two groups of displacement sensors 3
Crossing point of axes be in the top of broaching tool 6；
S4: respectively removing the hook 305 of the displacement sensor 3 of two groups of coaxial lines from link 306, and makes two coaxial
The bulb length bar 303 of 3 front end of linear movement pick-up is corresponding to abut, and completes two groups of (i.e. oblique two be oppositely arranged of displacement sensor 3
Group displacement sensor 3) reference data acquisition, realize the school zero of detection device, carry out reference data in one group of displacement sensor 3
When acquisition, the hook 305 of another group of displacement sensor 3 is hung on its corresponding link 306；
S5: the hook 305 of each displacement sensor 3 being respectively corresponded and is hung on its link 306, and rotation roulette 503 makes to support
Frame 1 declines certain altitude, until the crossing point of axes of two groups of displacement sensors 2 is on the radial section of broaching tool 6, preferred embodiment
In can be further preferably until the crossing point of axes of two groups of displacement sensors 2 be on the axis of broaching tool 6；
S6: respectively removing the hook 305 of each displacement sensor 3 from link 306, and makes each displacement sensor 3
Bulb length bar 303 is correctly pressed between the blade of broaching tool 6, and it is (i.e. oblique to set relatively then to complete two groups of displacement sensors 3 at this time
The two groups of displacement sensors 3 set) two groups of displacement datas acquisition, pass through the comparison of two groups of displacement datas and two groups of reference datas
Calculate the two groups of distance over bar that can obtain broaching tool 6；
S7: by the movement of mobile platform 2 and/or the rotation of broaching tool 6, can correspond to complete broaching tool not coaxial position and/
Or the distance over bar measurement of the circumferential positions of difference of same axial location, finally complete detection device removed from machine tool guideway, position
Displacement sensor such as takes out at the processes from sleeve, and device is restPosed.
In broaching tool distance over bar detection device and its detection method in the preferred embodiment of the present invention, the structure letter of detection device
The step of list, it is convenient to assemble, detection method is easy, and strong operability then can accurately and efficiently complete the inspection of broaching tool distance over bar
It surveys, promotes the efficiency of distance over bar detection, reduce the error of distance over bar detection, reduce the economic cost of distance over bar detection, there is pole
Good application and popularization value.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (9)
1. the distance over bar detection device of broaching tool, the distance over bar for broaching tool (6) is detected, including support frame (1) in long strip and
The mobile platform (2) that the support frame (1) can be fixed and it is driven to move on machine tool guideway, which is characterized in that
It is respectively arranged with a pair of of sleeve on the upper surface at support frame as described above (1) both ends, that is, is set to support frame as described above (1) one end
First sleeve and second sleeve and the 3rd sleeve and 4th sleeve for being set to support frame as described above (1) other end, two pairs of sets
The axis of cylinder (4) is in the same vertical plane above support frame as described above (1)；And
The first sleeve is set to the top of the second sleeve, and the 3rd sleeve is set to the upper of the 4th sleeve
The axis of side, the axis of the first sleeve and the 3rd sleeve intersects at the top in the middle part of support frame as described above (1), and described
The axis collinear of the axis of first sleeve and the 4th sleeve, the axis of the axis of the second sleeve and the 3rd sleeve
Collinearly, after then may make four displacement sensors (3) are corresponding to be assemblied in four sleeves (4), four displacement sensings
The axis of device (3) intersects at the top in the middle part of support frame as described above (1), to measure for the distance over bar of the broaching tool (6).
2. the distance over bar detection device of broaching tool according to claim 1, wherein the corresponding branch of the mobile platform (2)
Support (1) offers the accommodation groove of strip, to correspond to accommodating wherein for support frame as described above (1) and realize the support frame (1)
Longitudinal positioning.
3. the distance over bar detection device of broaching tool according to claim 2, wherein support frame as described above vertically offers on (1)
Tapped through hole (501), the corresponding tapped through hole (501) offers counterbore (502) on the mobile platform (2), then right
The tapped through hole (501) is answered to be provided with the lead screw (5) that can be threadedly coupled with it, and the lead screw (5) and the tapped through hole
(501) it after Corresponding matching in the embeddable counterbore (502) in the end of the lead screw (5), realizes in support frame as described above (1) transverse direction
Positioning, and can be by the lead screw (5) on the rotation in the tapped through hole (501) realizes that support frame as described above (1) is vertical
Lifting.
4. the distance over bar detection device of broaching tool according to claim 3, wherein be provided in the end of the lead screw (5)
The lifting of support frame as described above (1) in the accommodation groove can be achieved by rotating the wheel disc (503) in wheel disc (503).
5. the distance over bar detection device of broaching tool according to any one of claims 1 to 4, wherein corresponding two pairs of sets
Cylinder (4) is vertically provided with connection floor (8) respectively, i.e. the first floor and the second floor, and first floor can respectively will be described
First sleeve and the second sleeve are fixed on the upper surface of support frame as described above (1) one end, and second floor can be respectively by institute
It states 3rd sleeve and the 4th sleeve is fixed on the upper surface of support frame as described above (1) other end.
6. the distance over bar detection device of broaching tool according to any one of claims 1 to 4, wherein institute's displacement sensors
It (3) include that can correspond to the sensor sleeve (301) and iron core (302) for nesting into the sleeve (4) and fixing；
One end of the iron core (302) is provided with bulb length bar (303) and miniature drill chuck head (304) for distance over bar detection,
Its other end be movably connected in the sensor sleeve (301) and can in the sensor sleeve (301) interior reciprocal telescopic, after
And the one end of the sensor sleeve (301) is provided with hook (305) in the iron core (302), and in the sensor
Sleeve (301) is provided with link (306) close to one end of the hook (305), so that the iron core (302) is collapsible into institute
It states the hook (305) after sensor sleeve (301) and can correspond to and hang on the link (306).
7. the distance over bar detection device of broaching tool according to any one of claims 1 to 4, wherein the mobile platform (2)
Bottom correspond to the machine tool guideway and offer sliding groove, the mobile platform (2) can the sliding groove Corresponding matching described
It can move back and forth on machine tool guideway and along the length direction of the machine tool guideway, to complete the broaching tool not coaxial position distance over bar
Detection.
8. the distance over bar detection device of broaching tool according to any one of claims 1 to 4, wherein outside the sleeve (4)
It is provided in the axial direction with and cracks on week, and corresponding this cracks and be provided with threaded connector, elastic by the threaded connector can
The control for size of cracking described in realization, to realize quick despatch of the institute's displacement sensors (3) in the sleeve (4) and consolidate
It is fixed.
9. it is a kind of according to claim 1~any one of 8 described in the distance over bar detection device of broaching tool carry out the distance over bar of broaching tool
Detection method, its step are as follows:
S1: after support frame as described above (1) is correspondingly arranged with the mobile platform (2), by the corresponding dress of four institute's displacement sensors (3)
With into four sleeves (4) and fixed, and the mobile platform (2) correspondence is placed on the machine tool guideway, is realized
It is corresponding with the broaching tool position；
S2: by institute displacement sensors (3) end abutment in the first sleeve and the 4th sleeve, then by described first
Institute displacement sensors (3) end abutment in sleeve and the 4th sleeve, by two groups of oblique displacements being oppositely arranged
Sensor (3) is respectively completed the acquisition of two groups of reference datas；
S3: by the end abutment of institute's displacement sensors (3) in four sleeves (4) be pressed on the broaching tool blade it
Between, the acquisition of two groups of displacement datas is respectively completed by two groups of oblique institute's displacement sensors (3) being oppositely arranged；
S4: the displacement data as described in two groups respectively with reference data comparing calculation described in corresponding two groups, to complete the drawing
The measurement of knife distance over bar.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810355796.0A CN108917581B (en) | 2018-04-19 | 2018-04-19 | The distance over bar detection device and its detection method of broaching tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810355796.0A CN108917581B (en) | 2018-04-19 | 2018-04-19 | The distance over bar detection device and its detection method of broaching tool |
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| CN108917581B true CN108917581B (en) | 2019-11-05 |
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| JP2007003205A (en) * | 2005-06-21 | 2007-01-11 | Mitsubishi Materials Kobe Tools Corp | Device, method and program for measuring shape |
| CN105082005B (en) * | 2015-05-04 | 2016-11-30 | 苏州市计量测试研究所 | A kind of stationary fixture measuring distance over bar value |
| CN205981086U (en) * | 2016-08-30 | 2017-02-22 | 三门峡中原量仪股份有限公司 | Utensil is examined to high accuracy screw rod measurement over pins |
| CN107525453A (en) * | 2017-10-08 | 2017-12-29 | 孙阳 | A kind of external tooth distance over bar detection means |
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