CN103921227B - A kind of special fixture being used for detecting knuckle surface roughness - Google Patents

A kind of special fixture being used for detecting knuckle surface roughness Download PDF

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Publication number
CN103921227B
CN103921227B CN201410127153.2A CN201410127153A CN103921227B CN 103921227 B CN103921227 B CN 103921227B CN 201410127153 A CN201410127153 A CN 201410127153A CN 103921227 B CN103921227 B CN 103921227B
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China
Prior art keywords
knuckle
hole
guide
rotating disk
central turnplate
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CN103921227A (en
Inventor
李军民
王天福
刘勇
马洪雨
崔玉梅
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Tianjin Boxin Automotive Parts Co Ltd
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Tianjin Boxin Automotive Parts Co Ltd
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Priority to CN201410127153.2A priority Critical patent/CN103921227B/en
Publication of CN103921227A publication Critical patent/CN103921227A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B25HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25BTOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B11/00Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • G01B21/30Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring roughness or irregularity of surfaces

Abstract

The invention provides a kind of special fixture being used for detecting knuckle surface roughness, comprise central turnplate, side rotating disk and support; An affixed mandrel on central turnplate, knuckle is sleeved on mandrel, and mandrel connects a pressing plate; Central turnplate is provided with several guide-localization hole, and the caliper hole of guide-localization hole and knuckle is connected by a positioning rod; Side rotating disk has two, is arranged in parallel, and perpendicular to central turnplate, and be fixed in the both sides of central turnplate symmetrically, side rotating disk is rotatably installed on support.The present invention, by the rotation of both direction, makes each finished surface of knuckle towards top, and can keep level with roughmeter sensor, coordinates roughmeter to realize the detection of baroque knuckle surface roughness; Realize by the detection of a fixture to multiple portion faces roughness; Testing result accurately, can quantize, eliminate the hidden danger of quality that artificial decision errors causes.

Description

A kind of special fixture being used for detecting knuckle surface roughness
Technical field
The present invention relates to a kind of special fixture being used for detecting knuckle surface roughness, use Students ' Learning articles for use technical field.
Background technology
Slewing journal structure is comparatively complicated, working position and aperture more.Roughmeter cannot be used at present to carry out the detection of roughness to knuckle finished surface, is because do not have special fixture to knuckle Set and Positioning.
Existing knuckle surface roughness detection mode uses the textural characteristics of roughness comparison specimen and knuckle finished surface to contrast, by the roughness levels of visual judgement knuckle machined surface.
1) only have lathe, planer, vertical milling, plain milling, plain grinding, outer mill, grinding seven kinds of forms in roughness comparison specimen block, contrast cannot be carried out to the finished surface texture of the cutting ways such as brill, hinge and differentiate.
2) roughness comparison specimen block specifications is limited, lacks the standard sample of Ra2.5 μm, cannot meet instructions for use.
3) adopt the mode of contrast roughness comparison specimen block to detect, there is artificial decision errors, and data can not quantize, and there is hidden danger of quality.
Summary of the invention
The problem to be solved in the present invention is to provide a kind of special fixture being used for detecting knuckle surface roughness can placing various article.
For solving the problems of the technologies described above, the technical solution used in the present invention is: provide a kind of special fixture being used for detecting knuckle surface roughness, comprise central turnplate, side rotating disk and support.
An affixed mandrel on described central turnplate, knuckle is sleeved on mandrel, and described mandrel connects the pressing plate that is used for compressing knuckle; Described central turnplate is provided with several circumferential guide-localization hole of locating knuckle that is used for, and the caliper hole of described guide-localization hole and knuckle is connected by a positioning rod;
Described side rotating disk has two, is arranged in parallel, and perpendicular to central turnplate, and is fixed in the both sides of central turnplate symmetrically, and described side rotating disk is rotatably installed on support; Described side rotating disk is provided with upset locating hole or alignment pin, and corresponding described support is provided with alignment pin or rollover locating hole.
Further, described central turnplate is provided with the through hole of one and mandrel coaxial line.
Further, described mandrel is hollow shaft, is provided with screwed hole in its hollow cavity, described screwed hole Matching installation one pull bar; Described pull bar comprises screw rod and polished rod, and described polished rod position is provided with shoulder block; Described pressing plate be provided with one be used for " U " type groove of snapping on the polished rod of pull bar shoulder block position.
Further, the shoulder block place at described polished rod position is provided with an annular spacing groove, and described pressing plate snaps in annular spacing groove.
Further, the screw rod end of described pull bar connects a nut be used for pull bar cross spacing, the affixed shift fork of polished rod end of described pull bar.
Further, affixed several guide-localization cover matched with guide-localization hole on described central turnplate, described guide-localization cover and guide-localization hole coaxial line.
Further, described guide-localization hole is provided with five, and corresponding guide-localization cover and backstay also have five.
Further, described support is provided with a base and two risers, two described risers are arranged in parallel, and be fixed on base, described side rotating disk is rotatably installed on riser, described riser is provided with several upset locating hole or alignment pin, and corresponding side rotating disk is provided with several alignment pin or upset locating hole.
Further, described riser is provided with an alignment pin, and described side rotating disk is provided with two upset locating holes.
Further, described base lower end is provided with four and is used for regulating the levelness of whole fixture and the adjustment screw of height.
The bearing mounting hole of knuckle to be detected is sleeved on mandrel, and backstay described in certain and caliper hole are connected, " U " type groove of pressing plate is snapped in the cannelure of pull bar, then pull bar is screwed in the screwed hole of mandrel, until knuckle to be detected is closely fixed; Described side rotating disk is connected by bearing fit with between riser, namely side rotating disk can rotate on riser, when moving to certain position, alignment pin is inserted in locating hole, certain machined surface of knuckle to be detected can be placed in certain position accurately like this, then by roughmeter, its roughness be detected.
The advantage that the present invention has and good effect are: the present invention is the measuring principle according to roughmeter, by the rotation of both direction, and adopt locate mode accurately, make each finished surface of knuckle can towards top, and keep level with roughmeter sensor, roughmeter can be coordinated to realize the detection of baroque knuckle surface roughness; Solve the problems such as roughness comparison specimen block specifications, form constrained, realize by the detection of a fixture to multiple portion faces roughness; Testing result accurately, can quantize, eliminate the hidden danger of quality that artificial decision errors causes.
Accompanying drawing explanation
Fig. 1 is the first view stereo structural representation of knuckle to be detected;
Fig. 2 is the second view stereo structural representation of knuckle to be detected;
Fig. 3 is that the specific embodiment of the invention is used for the perspective view of the special fixture detecting knuckle surface roughness;
Fig. 4 is the position distribution schematic diagram in guide-localization cover and guide-localization hole on central turnplate in Fig. 3;
Fig. 5 is the syndeton schematic diagram of knuckle to be detected and central turnplate and other related components in Fig. 3;
Fig. 6 is I place close-up schematic view in Fig. 5;
Fig. 7 is perspective view when taking off pressing plate in Fig. 3 in the present invention;
Fig. 8 is perspective view when installing pressing plate in Fig. 3 in the present invention;
Fig. 9 is the perspective view that the present invention is used for when detecting lower ball pin face;
Figure 10 is the perspective view that the present invention is used for when detecting bearing mounting hole;
Figure 11 be the present invention be used for detection first shock absorber support face time perspective view;
Figure 12 be the present invention be used for detect joint arm face time be perspective view;
Figure 13 be the present invention be used for detection second shock absorber support face time perspective view;
Figure 14 is the perspective view that the present invention is used for when detecting ABS installed surface.
In figure:
I. bearing mounting hole, II. joint arm face, III .ABS installed surface, IV. the first shock absorber support face, V. the second shock absorber support face, VI. lower ball pin face;
1. roughmeter main frame, 2. height gauge, 3. side rotating disk, 4. driver geometrical clamp,
5. height gauge locking nut, 6. height gauge slide block, 7. driver, 8. gauge head, 9. backstay,
10. guide-localization cover, 11. mandrels, 12. central turnplates, 13. alignment pins, 14. risers,
15. bearing (ball) covers.16. bearing 17. platforms, 18. adjustment screws, 19. pressing plates, 20. knuckles,
21. pull bars;
101. first guide-localization covers, 102. second guide-localization covers, 103. the 3rd guide-localization covers,
104. the 4th guide-localization covers, 105. the 5th guide-localization covers;
301. first upset locating holes, 302. second upset locating holes.
Detailed description of the invention
In order to the more deep understanding of the present invention, enumerate a specific embodiment below, and by reference to the accompanying drawings, the present invention is described in further detail.
The special fixture that the present embodiment uses when being and carrying out roughness measurement to knuckle, the detection six machined surfaces of knuckle being carried out to roughness is needed in the present embodiment, as depicted in figs. 1 and 2, machined surface to be detected has: bearing mounting hole I, joint arm face II, ABS installed surface III, first shock absorber support face V, shock absorber support face IV, second and lower ball pin face VI.
Special fixture described in the present embodiment comprises: side rotating disk 3, knuckle rotary spacing pin 9, guide-localization cover 10, mandrel 11, central turnplate 12, alignment pin 13, riser 14, bearing (ball) cover 15, bearing 16, adjustment screw 18, pressing plate 19, pull bar 21 are formed, as shown in Figure 3; Wherein, mandrel 11 and central turnplate 12 are adopted and are bolted connection, and central turnplate 12 and side rotating disk 3 are adopted and be bolted connection, and side rotating disk 3 and riser 14 adopt bearing 16 to be connected.Side rotating disk 3 can carry out 360 ° of rotations around the axis direction of bearing 16, when side rotating disk 3 rotates, central turnplate 12 can be driven to rotate together, therefore, the knuckle 20 be arranged on mandrel 11 also can rotate thereupon together, side rotating disk 3 is provided with altogether two locating holes, penetrates a certain locating hole on side rotating disk 3 by side turntable locating pin 13 and position; Simultaneously, knuckle 20 and mandrel 11 adopt matched in clearance, when pressing plate 19 unclamps, knuckle 20 can carry out 360 ° of rotations around mandrel 11, central turnplate 12 is installed altogether five guide-localization covers 10, penetrate a certain guide-localization cover 10 on knuckle 20 caliper hole and central turnplate 12 by backstay 9 and position; By the rotation in both direction, make knuckle 20 each need detect position all can level upwards.
Be positioned at five guide-localization covers on central turnplate 12 and be positioned at the particular location of two upset locating holes on side rotating disk 3 and number as shown in Figure 4, when first guide-localization cover 101 and first overturn locating hole 301 with the use of time, can be used for detecting the surface roughness in workpiece second shock absorber support face; When the second guide-localization cover 102 and first overturn locating hole 301 with the use of time, can be used for surface roughness detection workpiece being saved to arm face and bearing mounting hole position; When the 3rd guide-localization cover 103 and first overturn locating hole 301 with the use of time, can be used for detecting the surface roughness of workpiece ABS installed surface; When the 4th guide-localization cover 104 and first overturn locating hole 301 with the use of time, can be used for detecting the surface roughness in workpiece first shock absorber support face; When the 5th guide-localization cover 105 and second overturn locating hole 302 with the use of time, can be used for detecting the surface roughness in ball pin face under workpiece.
In the present embodiment, the syndeton of knuckle 20 and central turnplate 12 and other related components as shown in Figure 5, pull bar 21 and mandrel 11 rear end adopt matched in clearance to play the effect of guiding, and stop nut plays stroke when restriction pull bar 21 pulls out, and avoids pull bar 21 to skid off mandrel 11; Pull bar 21 adopts shorter being threaded (as shown in Figure 6) with mandrel 11 front end, by rotating shift fork, the screw thread of pull bar 21 is unclamped, and when pull bar 21 pulls out, pressing plate 19 can insert in the annular spacing groove of pull bar 21, stopper slot both sides shoulder block band dynamic pressure plate 19 moves around with pull bar 21, pull bar 21 is pushed in mandrel 11, then rotates shift fork, make the screw threads for fastening of pull bar 21, pressing plate 19 energy workpiece pressings, realize quick-clamping workpiece.
In the present embodiment, roughmeter measuring principle: during measuring workpieces surface roughness, sensor is placed on workpiece measured surface, do constant speed by the driving mechanism band dynamic sensor of instrument internal along measured surface to slide, signal is produced by inductance, and convert data to, by chip digital filtering is carried out to data and parameter calculates measurement result.Need make roughmeter sensor and workpiece measured surface maintenance level during measurement, and it is reliable to require measured workpiece to locate.
Special fixture in the present embodiment is exactly requirement and the knuckle self structure that need detect position according to knuckle, and in conjunction with the measuring principle of above-mentioned roughmeter, make knuckle each measured surface can level upwards, and make roughmeter sensor correctly, steadily, reliably place on the surface of the workpiece, and keep level with workpiece measured surface, realize the object that use fixture detects knuckle multiple location surface roughness.
To detect the lower ball pin face surface roughness of knuckle, as shown in Figure 3, the concrete using method of this fixture is as follows:
1), when using, first pull bar 21 is unclamped, take off pressing plate 19, as shown in Figure 7;
2) workpiece is loaded on mandrel 11, the position of detection site as required, by rotational workpieces, makes caliper hole and the 5th guide-localization overlap the central axes of 105, backstay 9 is penetrated in caliper hole and the 5th guide-localization cover 105, realize the angle location of workpiece;
3) by the rotation of side rotating disk 3, alignment pin (13) is penetrated in the second upset locating hole 302 of side rotating disk 3, make workpiece detected portion potential energy level upwards;
4) pull bar 21 is pulled out, make pressing plate 19 can put into the stopper slot place of pull bar 21, as shown in Figure 8, pull bar is advanced in mandrel 11 after loading onto pressing plate 19, connected by nose threads and tighten pull bar, make work piece;
5) regulate the height of height gauge slide block 6, make roughmeter driver 7 and workpiece tested plane maintenance level, thus carry out accurately, reliably detecting, as shown in Figure 9.
The detection at other positions of workpiece realizes by the guide-localization cover on adjustment central turnplate 12 and the upset locating hole on side rotating disk 3, wherein: as shown in Figure 10, is the perspective view that the present embodiment is used for when detecting bearing mounting hole; As shown in figure 11, be the present embodiment be used for detection first shock absorber support face time perspective view; As shown in figure 12, be the present embodiment be used for detect joint arm face time be perspective view; As shown in figure 13, be the present embodiment be used for detection second shock absorber support face time perspective view; As shown in figure 14, be the perspective view that the present embodiment is used for when detecting ABS installed surface.
Above embodiments of the invention have been described in detail, but described content being only preferred embodiment of the present invention, can not being considered to for limiting practical range of the present invention.All equalizations done according to the scope of the invention change and improve, and all should still belong within this patent covering scope.

Claims (8)

1. be used for detecting a special fixture for knuckle surface roughness, it is characterized in that: comprise central turnplate, side rotating disk and support;
An affixed mandrel on described central turnplate, knuckle is sleeved on mandrel, and described mandrel connects the pressing plate that is used for compressing knuckle; Described central turnplate is provided with several circumferential guide-localization hole of locating knuckle that is used for, and the caliper hole of described guide-localization hole and knuckle is connected by a positioning rod;
Described side rotating disk has two, is arranged in parallel, and perpendicular to central turnplate, and is fixed in the both sides of central turnplate symmetrically, and described side rotating disk is rotatably installed on support; Described side rotating disk is provided with upset locating hole or alignment pin, and corresponding described support is provided with alignment pin or rollover locating hole;
Described central turnplate is provided with the through hole of one and mandrel coaxial line;
Described mandrel is hollow shaft, is provided with screwed hole in its hollow cavity, described screwed hole Matching installation one pull bar; Described pull bar comprises screw rod and polished rod, and described polished rod position is provided with shoulder block; Described pressing plate is provided with " U " type groove being used for snapping on the polished rod of pull bar shoulder block position.
2. special fixture according to claim 1, is characterized in that: the shoulder block place at described polished rod position is provided with an annular spacing groove, and described pressing plate snaps in annular spacing groove.
3. special fixture according to claim 2, is characterized in that: the screw rod end of described pull bar connects a nut be used for pull bar cross spacing, the affixed shift fork of polished rod end of described pull bar.
4. special fixture according to claim 1, is characterized in that: affixed several guide-localization cover matched with guide-localization hole on described central turnplate, described guide-localization cover and guide-localization hole coaxial line.
5. special fixture according to claim 4, is characterized in that: described guide-localization hole is provided with five, and corresponding guide-localization cover and backstay also have five.
6. special fixture according to claim 1, it is characterized in that: described support is provided with a base and two risers, two described risers are arranged in parallel, and be fixed on base, described side rotating disk is rotatably installed on riser, described riser is provided with several upset locating hole or alignment pin, and corresponding side rotating disk is provided with several alignment pin or upset locating hole.
7. special fixture according to claim 6, is characterized in that: described riser is provided with an alignment pin, and described side rotating disk is provided with two upset locating holes.
8. special fixture according to claim 6, is characterized in that: described base lower end is provided with four and is used for regulating the levelness of whole fixture and the adjustment screw of height.
CN201410127153.2A 2014-03-31 2014-03-31 A kind of special fixture being used for detecting knuckle surface roughness Active CN103921227B (en)

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Application Number Priority Date Filing Date Title
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Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104959929A (en) * 2015-06-19 2015-10-07 法格霭德兰汽车配件(昆山)有限公司 Visual inspection installing jig for steering joint
CN104972419A (en) * 2015-06-24 2015-10-14 镇江佳鑫精工设备有限公司 Pressing plate combination piece
CN106370152B (en) * 2016-10-18 2019-06-21 武汉科技大学 A kind of heavy rail clamping device
CN112108912B (en) * 2020-09-15 2022-04-01 合肥市东庐机械制造有限公司 Firm clamping device is used in finish machining of fork truck accessory knuckle

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06185960A (en) * 1992-10-06 1994-07-08 Mitsubishi Motors Corp Method for measuring deflecting width of brake disk against knuckle
CN2915356Y (en) * 2006-06-14 2007-06-27 中国重型汽车集团有限公司 Drill jig for automobile knuckle turning
KR100793694B1 (en) * 2006-12-29 2008-01-11 한국프랜지공업 주식회사 Apparatus testing strenth of knuckle for vehicle
CN201109033Y (en) * 2007-08-22 2008-09-03 比亚迪股份有限公司 Fabrication chuck
CN202485581U (en) * 2012-01-19 2012-10-10 长城汽车股份有限公司 Vehicle knuckle taper hole detection apparatus

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06185960A (en) * 1992-10-06 1994-07-08 Mitsubishi Motors Corp Method for measuring deflecting width of brake disk against knuckle
CN2915356Y (en) * 2006-06-14 2007-06-27 中国重型汽车集团有限公司 Drill jig for automobile knuckle turning
KR100793694B1 (en) * 2006-12-29 2008-01-11 한국프랜지공업 주식회사 Apparatus testing strenth of knuckle for vehicle
CN201109033Y (en) * 2007-08-22 2008-09-03 比亚迪股份有限公司 Fabrication chuck
CN202485581U (en) * 2012-01-19 2012-10-10 长城汽车股份有限公司 Vehicle knuckle taper hole detection apparatus

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