CN210442086U

CN210442086U - Reliability test device for main shaft blind rivet and disc spring of machining center

Info

Publication number: CN210442086U
Application number: CN201921511746.3U
Authority: CN
Inventors: 陈传海; 李伟智; 金桐彤; 田海龙; 杨兆军; 高雷; 孙国立; 蓝力峰; 庞浩文; 彭倩倩; 王思琪; 张富尧; 路尧; 曹君
Original assignee: Jilin University
Current assignee: Jilin University
Priority date: 2019-09-11
Filing date: 2019-09-11
Publication date: 2020-05-01
Anticipated expiration: 2029-09-11

Abstract

The utility model discloses a reliability test device for a main shaft blind rivet and a disc spring of a machining center.A simulation tool changing mechanism is longitudinally arranged on one side of a ground flat iron, a simulation loading mechanism is longitudinally arranged on the other side of the ground flat iron, and a simulation main shaft mechanism is longitudinally arranged in the middle of the ground flat iron; a tool handle in the simulation main shaft mechanism is aligned with a tool grabbing manipulator of the simulation tool changing mechanism; and a piston push rod of a cylinder in the simulation loading mechanism is kept in alignment with a rotor shaft of the simulation main shaft mechanism. The utility model discloses a laboratory reliability bench test can acquire fault data, operational data and maintenance data fast to the test condition is controllable, and the experimentation can duplicate, has overcome the not enough of acquireing fault data, operational data and maintenance data method through on-the-spot reliability tracking test very well, also for obtaining fault data, operational data and the maintenance data of a plurality of blind rivet-dish spring parts in the short time, and then finds its weak link and carries out the improvement design and provide the reliability test basis.

Description

Reliability test device for main shaft blind rivet and disc spring of machining center

Technical Field

The utility model relates to an experimental device technical field, more specifically the utility model relates to a machining center main shaft blind rivet and dish spring reliability test device that says so.

Background

The numerical control machine tool is a foundation for improving the national manufacturing level and equipment level and is an important mark for measuring the developed level and comprehensive national strength of national industry. The main shaft is a core component of a machining center and is a key functional sub-component with the most representative significance, and the quality and reliability of the main shaft directly affect the quality of a machined workpiece and also affect the reliability level of the machining center. According to data of field statistics, among various factors causing damage to a spindle, the damage to the spindle due to damage to the spindle rivet-disc spring component accounts for about 21%, so that the reliability of the spindle rivet-disc spring component is a key influencing the reliability of the spindle and even the whole machine of a machining center.

From the current situation, a reliability test device specially aiming at a blind rivet-disc spring component of a main shaft of a machining center is not provided in China, and fault data, operation data and maintenance data can be obtained only through a field reliability tracking test so as to carry out corresponding reliability analysis. However, the method for acquiring the fault data, the operation data and the maintenance data of the main shaft rivet-disc spring component by adopting the field reliability tracking test has long test period, uncontrollable test and irreproducible test, and consumes a large amount of manpower, material resources and financial resources, so the field reliability tracking test method has low practicability. The laboratory reliability bench test can quickly acquire fault data, operation data and maintenance data, the test conditions are controllable, and the test process can be copied.

Therefore, how to provide a device for testing the reliability of a processing center spindle blind rivet and a disc spring for a laboratory is an urgent problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model provides a machining center main shaft blind rivet and dish spring reliability test device, can acquire fault data fast through laboratory reliability bench test, operation data and maintenance data, and test condition is controllable, the experimentation can duplicate, overcome very well and acquire fault data through the on-the-spot reliability tracking test, the not enough of operation data and maintenance data method, also be the fault data who obtains a plurality of blind rivets-dish spring part in the short time, operation data and maintenance data, and then discover its weak link and carry out improved design and provide the reliability test basis, the improvement for machining center complete machine reliability has made the contribution.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the reliability test device for the blind rivet and the disc spring of the main shaft of the machining center comprises a simulation tool changing mechanism, a simulation main shaft mechanism, a simulation loading mechanism, an automatic control device and a ground flat iron;

the ground flat iron is installed on a foundation, the simulation tool changing mechanism is installed on one side of the ground flat iron along the longitudinal direction, the simulation loading mechanism is installed on the other side of the ground flat iron along the longitudinal direction, and the simulation spindle mechanism is installed in the middle of the ground flat iron along the longitudinal direction; a tool handle in the simulation main shaft mechanism is aligned with a tool grabbing manipulator of the simulation tool changing mechanism; a piston push rod of a cylinder in the simulation loading mechanism is aligned with a rotor shaft of the simulation main shaft mechanism; the automatic control device is installed on the foundation on one side of the ground flat iron through a control cabinet, and the automatic control device is electrically connected with the simulation loading mechanism, the simulation tool changing mechanism and the simulation spindle mechanism.

Preferably, in the device for testing reliability of the main shaft blind rivet and the disc spring of the machining center, the simulation main shaft mechanism comprises a first simulation main shaft element, a second simulation main shaft element, a third simulation main shaft element and a simulation main shaft mechanism outer shell; the rotor shaft outer structures of the first simulation main shaft element, the second simulation main shaft element and the third simulation main shaft element are matched in the same way;

the first simulation main shaft element, the second simulation main shaft element and the third simulation main shaft element are arranged on the simulation main shaft mechanism outer shell, the distances between the first simulation main shaft element, the second simulation main shaft element and the third simulation main shaft element are equal, and the heights of the first simulation main shaft element, the second simulation main shaft element and the third simulation main shaft element from the ground plain iron are equal;

preferably, in the device for testing reliability of the main shaft rivet and the disc spring of the machining center, the outer shell of the simulation main shaft mechanism is fixedly connected with the ground iron by a T-shaped bolt.

Preferably, in the device for testing reliability of the main shaft rivet and the disc spring of the machining center, the outer shell of the simulation main shaft mechanism is of a box-type structure, six seat lugs are arranged on a base of the outer shell of the simulation main shaft mechanism and divided into two groups, the distances between every two three seat lugs of one group are the same, the other three seat lugs of the other group are symmetrically distributed with the three seat lugs along a middle vertical plane of the outer shell of the simulation main shaft mechanism, and the six seat lugs arranged on the whole simulation main shaft mechanism are used for being fixedly connected with a ground iron; the simulation main shaft mechanism shell is provided with three holes, the three holes are identical in structural design, six threaded blind holes which are uniformly distributed at 60 degrees and are used for fixedly connecting the front small covers are arranged on the end face with the smallest opening hole diameter of each hole, and six threaded blind holes which are uniformly distributed at 60 degrees and are used for fixedly connecting the rear large covers are arranged on the end face of the hole with the second largest opening hole diameter.

Preferably, in the device for testing reliability of the main shaft rivet and the disc spring of the machining center, the first simulation main shaft element belongs to a shaft structural member and comprises a first rotor shaft, the first rotor shaft is a hollow shaft, a first tool handle, a first rivet, a first pulling claw, a first pulling rod, a first disc spring adjusting pad, a first guide sleeve, a first pulling rod nut and a first gland are respectively arranged in the rotor shaft from right to left, and the rotating central lines of the first tool handle, the first rivet, the first pulling claw, the first pulling rod, the first disc spring adjusting pad, the first guide sleeve, the first pulling rod nut and the first gland are collinear with the rotating central line of the first rotor shaft and are matched with the rotating central line of the first rotor shaft from right to left along the inner hole of the first tool handle through a 7:24 taper hole;

the end face of the first tool handle is provided with a threaded blind hole, and the external thread at the tail part of the first blind rivet is fixedly connected with the threaded blind hole at the end face of the first tool handle; the four claws of the first pull claw clamp the pull head of the first pull nail, and the pull claw head of the first pull claw is provided with a threaded blind hole with a section of external thread fixedly connected with the end face of the pull rod of the first pull rod; the first disc spring is in clearance fit with the outer side surface of the first pull rod and the shaft inner hole surface of the first rotor shaft; the first disc spring adjusting pad divides the first disc spring into a plurality of first disc spring groups uniformly, the first disc spring groups are connected in series and segmented, the first disc springs are installed in a way that three disc springs are overlapped and then are closed, and the first disc spring adjusting pad is in transition fit with the inner shaft hole surface of the first rotor shaft and the outer side surface of the first pull rod; the first guide sleeve separates the first disc spring group from the first pull rod nut, and the first guide sleeve is in clearance fit with the outer side surface of the first pull rod and the inner shaft hole surface of the first rotor shaft; the external thread at the tail part of the first pull rod is fixedly connected with the first pull rod nut through threads, and the end face of the first pull rod nut is provided with 4 threaded blind holes which are uniformly distributed at 90 degrees and are used for fixedly connecting the first gland; the end face of the first rotor shaft with the taper hole is provided with 2 threaded blind holes which are symmetrical to the rotation axis of the first rotor shaft and used for fixing 2 first end face keys.

Preferably, in the device for testing reliability of the main shaft blind rivet and the disc spring of the machining center, a three-section stepped shaft is arranged outside the first rotor shaft from the maximum outer diameter shaft shoulder, and a pair of labyrinth sealing rings are axially positioned and fixed through the maximum outer diameter shaft shoulder; the rotary sealing ring is in interference fit with the outer side face of the first rotor shaft; the inner hole wall of the outer shell of the simulation main shaft mechanism is in transition fit with the inner hole wall of the outer shell of the simulation main shaft mechanism through a fixed sealing ring; a pair of angular contact ball bearings which are installed reversely are axially positioned and fixed through a labyrinth seal ring, the angular contact ball bearings are in transition fit with the outer side surface of the first rotor shaft and the inner hole wall of the simulation main shaft mechanism shell, a front inner spacer and a front outer spacer are arranged between the angular contact ball bearings for axial positioning, the front inner spacer is in interference fit with the outer side surface of the first rotor shaft, and the front outer spacer is in transition fit with the inner hole wall of the simulation main shaft mechanism shell; a front nut is fixedly connected to the outer side surface of the first rotor shaft through threads; the pair of reversely mounted angular contact ball bearings are axially positioned and fixed through a rotor inner sleeve, the rotor inner sleeve is axially positioned and fixed through a second large-outer-diameter shaft shoulder, and the angular contact ball bearings are in transition fit with the outer side surface of the first rotor shaft and the inner hole wall of the rear large cover; a rear inner spacer and a rear outer spacer are arranged between the angular contact ball bearings for axial positioning, the rear inner spacer is in interference fit with the outer side face of the first rotor shaft, the rear outer spacer is in transition fit with the inner hole wall of the rear big cover, and a rear nut is fixedly connected to the outer side face of the tail of the first rotor shaft in a threaded connection mode.

Preferably, in the device for testing reliability of the main shaft rivet and the disc spring of the machining center, the second simulation main shaft element is a shaft type structural member and comprises a second rotor shaft, the second rotor shaft is a hollow shaft, the parts in the second rotor shaft are respectively a second tool handle, a second rivet, a second pull claw, a second pull rod, a second disc spring adjusting pad, a second guide sleeve, a second pull rod nut, a second anti-loosening sleeve and a second pressing cover from right to left, the rotation center lines of the second tool handle, the second pull nail, the second pull claw, the second pull rod, the second disc spring adjusting pad, the second guide sleeve, the second pull rod nut and the second anti-loosening sleeve are collinear with the rotation center line of the second tool handle rotor shaft, and the rotation center line of the second tool handle rotor shaft from right to left, and the second inner hole is matched with the second rotor shaft through a 7:24 taper hole;

the end face of the second tool handle is provided with a threaded blind hole, and the external thread at the tail part of the second blind rivet is fixedly connected with the threaded blind hole at the end face of the second tool handle; four claws of the second pull claw clamp the pull head of the second pull nail, and the pull claw head of the second pull claw is provided with a threaded blind hole with a section of external thread fixedly connected with the end face of the pull rod of the second pull rod; the second disc spring is in clearance fit with the outer side surface of the second pull rod and the shaft inner hole surface of the second rotor shaft; the second disc spring adjusting pad divides the second disc spring into a plurality of second disc spring groups uniformly, the second disc spring groups are connected in series and segmented, and the second disc spring adjusting pad is in transition fit with the inner hole surface of the second rotor shaft and the outer side surface of the second pull rod; the second disc spring group is separated from the second pull rod nut by the second guide sleeve, and the second guide sleeve is in clearance fit with the outer side surface of the second pull rod and the inner shaft hole surface of the second rotor shaft; no. two pull rod afterbody external screw threads with No. two pull rod nuts pass through threaded connection fixed, pull rod nut terminal surface is provided with 4 and is 90 evenly distributed's the screw thread blind hole that is used for fixed connection No. two glands, No. two rotor shaft open the terminal surface that has the taper hole be provided with 2 with No. two rotor shaft axis of revolution symmetry just are used for the fixed screw thread blind hole of No. 2 terminal surface keys.

Preferably, in the device for testing reliability of the main shaft rivet and the disc spring of the machining center, the third simulation main shaft element is a shaft-type structural member and comprises a third rotor shaft, the third rotor shaft is a hollow shaft, the parts in the third rotor shaft from right to left are respectively a third tool shank, a third rivet, a third pull claw, a third pull rod, a third disc spring adjusting pad, a third guide sleeve, a third pull rod nut and a third gland, the rotating center lines of the third tool shank, the third pull nail, the third pull claw, the third pull rod, the third disc spring adjusting pad, the third guide sleeve, the third pull rod nut and the third gland are collinear with the rotating center line of the third rotor shaft, the inner hole of the tool shank is from right to left along the inner hole of the third rotor shaft, the third tool shank is matched with the third rotor shaft through a 7:24 taper hole, and the end face of the third tool shank is provided with a threaded blind hole, the external thread at the tail part of the third blind rivet is fixedly connected with the threaded blind hole on the end surface of the third tool shank; four claws of the third pull claw clamp the pull head of the third pull nail, and the pull claw head of the third pull claw is provided with a threaded blind hole with a section of external thread fixedly connected with the end face of the pull rod of the third pull rod; the third disc spring is in clearance fit with the outer side surface of the third pull rod and the inner hole surface of the third rotor shaft;

the third disc spring adjusting pad equally divides the third disc spring into a plurality of third disc spring groups which are connected in series and segmented, the third disc spring adjusting pad is in transition fit with the inner hole surface of the third rotor shaft and the outer side surface of the third pull rod, the third guide sleeve separates the third disc spring group from the third pull rod nut, the third guide sleeve is in clearance fit with the outer side surface of the third pull rod and the inner hole surface of the third rotor shaft, the external thread at the tail part of the third pull rod is fixedly connected with the third pull rod nut through threads, the end surface of the pull rod nut is provided with 4 threaded blind holes which are uniformly distributed at 90 degrees and are used for fixedly connecting the third gland, the end face of the third rotor shaft with the taper hole is provided with 2 threaded blind holes which are symmetrical to the rotation axis of the third rotor shaft and used for fixing 2 third end face keys.

Preferably, in the device for testing reliability of the main shaft blind rivet and the disc spring of the machining center, the analog loading mechanism comprises a first cylinder, a second cylinder, a third cylinder, a first cylinder front support, a second cylinder front support, a third cylinder front support, a first cylinder connector, a second cylinder connector, a third cylinder connector, a first cylinder rear support, a second cylinder rear support and a third cylinder rear support; the piston push rod heads of the first cylinder, the second cylinder and the third cylinder are respectively welded with a first cylinder connector, a second cylinder connector and a third cylinder connector; the front end of the first air cylinder is fixedly connected with the upper end of the first air cylinder front support through a bolt, and the front end of the first air cylinder is fixedly connected with the upper end of the first air cylinder rear support through a bolt; the front end of the second cylinder is fixedly connected with the upper end of the second cylinder front support through a bolt, and the front end of the second cylinder front support is fixedly connected with the upper end of the second cylinder rear support through a bolt; the front end of the third cylinder is fixedly connected with the upper end of the front support of the third cylinder through a bolt, and the front end of the third cylinder is fixedly connected with the upper end of the rear support of the third cylinder through a bolt; the bases of the first cylinder front support, the second cylinder front support, the third cylinder front support, the first cylinder rear support, the second cylinder rear support and the third cylinder rear support are fixed on the ground flat iron through bolts.

Preferably, in the device for testing reliability of the main shaft blind rivet and the disc spring of the machining center, the simulation tool changing mechanism comprises a first manipulator, a second manipulator, a third manipulator, a large mechanical arm, a linear rolling guide rail, a guide rail slider, a connecting rod, a crank shaft supporting seat, a coupling, a motor, a sliding table top plate, a sliding table middle platform, a first connecting seat, a first ball screw, a first locking device, a first hand wheel, a second connecting seat, a second ball screw, a second locking device, a second hand wheel and a sliding table base;

the first mechanical arm, the second mechanical arm and the third mechanical arm are fixedly mounted on the large mechanical arm through bolts and nuts, four groups of counter bores are arranged on the large mechanical arm base, each group of counter bores respectively comprises two counter bores, and the distribution condition of each group of counter bores is consistent with the distribution condition of two threaded blind holes on each guide rail sliding block; the four guide rail sliding blocks are arranged on two linear rolling guide rails of the linear rolling guide rails; four uniformly distributed counter bores are formed in each linear rolling guide rail and are used for fixedly connecting threaded blind holes of a top plate of the sliding table; the large mechanical arm base is provided with two external lugs with the same structure, a through hole for fixedly connecting the large end of the connecting rod is formed in each external lug, and a through hole formed in the small end of the connecting rod is fixedly connected with a through hole formed in the large end of the crank shaft;

deep groove ball bearings in the crankshaft supporting seat and the crankshaft shoulder are axially positioned, the outer side face of the crankshaft and the inner ring of the deep groove ball bearings are in transition fit, one side of the outer ring of the deep groove ball bearings is attached to the crankshaft supporting seat, the other side of the outer ring of the deep groove ball bearings is fixed by a crankshaft supporting seat bearing end cover, 4 bolt through holes which are uniformly distributed 90 degrees are arranged on the end face of the crankshaft supporting seat bearing end cover and are used for fixedly connecting the crankshaft supporting seat, 4 thread blind holes which are uniformly distributed 90 degrees are arranged on the matched face of the crankshaft supporting seat and the crankshaft supporting seat bearing end cover, 2 bolt through holes which are symmetrical about the central plane of the crankshaft supporting seat are arranged on the crankshaft supporting seat and are used for fixedly connecting the sliding table top plate, and the;

2 groups of bolt through holes which are symmetrical with the central plane of the motor are arranged on the supporting seat of the motor, and each group is provided with 2 bolt through holes for fixedly connecting a sliding table top plate; 2 groups of bolt through holes which are symmetrical with the central plane of the first connecting seat are arranged on the connecting surface of the first connecting seat and the sliding table top plate, and each group is provided with 2 bolt through holes for fixedly connecting the sliding table top plate; the connecting surface of the first connecting seat and the first ball screw nut pair is provided with 2 groups of bolt through holes which are symmetrical by a central symmetrical plane of the first connecting seat, each group of thread through holes are provided with 3 bolt through holes which are uniformly distributed in 30 degrees and are used for fixedly connecting the first ball screw nut pair, the first ball screw is arranged on a sliding table middle platform, the outer side surface of an extending shaft of the first ball screw is in clearance fit with the inner hole surface of a locking piece in the first locking seat, the outer side surface of the locking piece is in transition fit with the inner hole wall of the first locking seat, and the first locking seat is provided with a thread through hole which is matched with the first locking screw;

2 bolt through holes which are symmetrical with the central plane of the first locking seat are formed in the first locking seat and are used for fixedly connecting the middle platform of the sliding table; and 2 groups of bolt through holes which are symmetrical with the central plane of the second connecting seat are arranged on the surface where the second connecting seat and the middle platform of the sliding table are connected, and each group is provided with 2 bolt through holes for fixedly connecting the top plate of the sliding table. The connecting surface of the second connecting seat and the second ball screw nut pair is provided with 2 groups of bolt through holes which are symmetrical by a central symmetrical plane of the second nut seat, each group of thread through holes are provided with 3 bolt through holes which are uniformly distributed at 30 degrees and are used for fixedly connecting the second ball screw nut pair, the second ball screw is arranged on a middle platform of the sliding table, the outer side surface of an extending shaft of the second ball screw is in clearance fit with the inner hole surface of a locking plate in the second locking seat, the outer side surface of the locking plate is in transition fit with the inner hole wall of the second locking seat, the second locking seat is provided with a thread through hole which is matched with a second locking screw, and the second locking seat is provided with 2 bolt through holes which are symmetrical by the central plane of the second locking seat and are used for fixing the base of; the slip table base is provided with 4 seat ears, divide into two sets ofly, and a set of 2 seat ears are the same between two liang, and a set of 2 seat ears set up to distribute with slip table base middle symmetry plane and above-mentioned 2 seat ears are symmetrical in addition, 4 seat ears that whole slip table base set up be used for with horizontal iron fixed connection.

According to the technical scheme, compared with the prior art, the utility model provides a machining center main shaft blind rivet and dish spring reliability test device adopts the cylinder to carry out load loading to blind rivet-dish spring part, and simulation blind rivet-dish spring part operating mode load under operating condition, load amplitude and frequency can be adjusted according to different operating modes dynamically, and load loading precision is high, the loading is convenient.

The device can automatically run for a long time in an unattended state, can reduce the labor intensity of testers, automatically performs the reliability test of the main shaft rivet-disc spring component of the machining center, excites and exposes potential faults of the main shaft rivet-disc spring component, and provides engineering practical basic data for the reliability increase and evaluation.

The utility model discloses rational in infrastructure, experimental principle is accurate, is applicable to the reliability aassessment and the reliability of machining center main shaft blind rivet-dish spring part test such as increase.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is an axonometric view of the present invention;

FIG. 2 is an isometric projection view of FIG. 1B;

fig. 3 is an axonometric view of the analog loading mechanism of the present invention;

fig. 4 is an axonometric view of the analog spindle mechanism of the present invention;

FIG. 5 is an isometric projection view of a tool changer simulation mechanism of the present invention;

FIG. 6 is an assembly view of a part of the structure of the simulation spindle mechanism of FIG. 4;

FIG. 7 is a schematic view of the assembly of the internal parts of the third rotor shaft in the simulated spindle mechanism of FIG. 6;

FIG. 8 is a schematic view of the assembly of the internal parts of the second rotor shaft in the simulated spindle mechanism of FIG. 6;

FIG. 9 is a schematic view of the assembly of the internal parts of the first rotor shaft of the simulated spindle mechanism of FIG. 6;

FIG. 10 is an assembly view of a portion of the structure of the simulated tool changing mechanism of FIG. 5;

FIG. 11 is an isometric projection view of a ball screw arrangement used in the partial construction of the simulated tool change mechanism of FIG. 10;

FIG. 12 is another angular isometric view of the ball screw arrangement used in the partial configuration of the simulated tool changing mechanism of FIG. 10;

FIG. 13 is a schematic block diagram of the structure of the automatic control device of the present invention;

fig. 14 is a schematic structural diagram of a control circuit of the first cylinder, the second cylinder and the third cylinder of the analog loading mechanism of the present invention;

fig. 15 is a schematic view of the interconnection of the components of the automatic control device of the present invention.

In the figure: 1. a simulated tool changing mechanism, 2 a simulated main shaft mechanism, 3 a simulated loading mechanism, 4 an automatic control device, 1-1 a cylinder connector, 1-2 a cylinder connector, 1-3 a cylinder connector, 2-1 a cylinder push rod, 2-2 a cylinder push rod, 2-3 a cylinder push rod, 3-1 a cylinder, 3-2 a cylinder, 3-3 a cylinder, 4-1 a cylinder front bracket, 4-2 a cylinder front bracket, 4-3 a cylinder front bracket, 5-1 a cylinder rear bracket, 5-2 a cylinder rear bracket, 5-3 a cylinder rear bracket, 6 a simulated main shaft mechanism outer shell, 7 a control cabinet, 8 a third manipulator, 9. a large mechanical arm, a second mechanical arm, a support arm, a first mechanical arm, a second mechanical arm, a rear large cover, a rear nut, 15.7014-1C bearings I, 16 rear outer spacers, 17 rear inner spacers, 18.7014-1C bearings II, 19 rotor inner sleeves, 20 upper industrial personal computers, 21 front nuts, 22.7019AC bearings I, 23 front outer spacers, 24 front inner spacers, 25.7019AC bearings II, 26 outer labyrinth seal rings, 27 inner labyrinth seal rings, 28 front small covers, 29 first anti-loose sleeves, 30 first pull rod nuts, 31 first guide sleeves, 32 first pull rods, 33 first rotor shafts, 34 first disc springs, 35 first disc spring adjusting pads, 36 first pull claws, 37 first pull nails, 38 first end face keys, 39 first cutter handles, 40 second anti-loose sleeves, 41 second pull rods, 42 guide sleeves, 43. a second pull rod, a 44, a second rotor shaft, a 45, a second disc spring, a 46, a second disc spring adjusting pad, a 47, a second pull claw, a 48, a second pull nail, a 49, a second end key, a 50, a second knife handle, a 51, a third anti-loose sleeve, a 52, a third pull rod nut, a 53, a third guide sleeve, a 54, a third disc spring, a 55, a third disc spring adjusting pad, a 56, a third pull rod, a 57, a third rotor shaft, a 58, a third pull claw, a 59, a third pull nail, a 60, a third knife handle, a 61, a third end key, a 62, a sliding table middle platform, a 63, a sliding table top plate, a 64, a second hand wheel, a 65, a second locking screw rod, a 66, a second locking seat, a 67, a second ball screw fixing unit, a 68, a sliding table base, a 69, a second ball screw, a 70, a second connecting seat, a second ball screw nut pair, a 72, a second ball screw supporting unit, a 73, a first locking screw rod, a 74, a first locking screw rod, 75. the locking device comprises a first locking seat, a first ball screw fixing unit, a second ball screw fixing unit, a 77 lower position programmable controller, a 78 first ball screw, a 79 first connecting seat, a 80 first ball screw nut pair, a 81 first ball screw supporting unit, a 82 crankshaft supporting seat, a 83 crankshaft supporting seat bearing end cover, a 84 connecting rod, a 85 motor, a 86 guide rail sliding block, a 87 linear rolling guide rail, a 88-1 three-position four-way electromagnetic reversing valve I, a 88-2 three-position four-way electromagnetic reversing valve II, a 88-3 three-position four-way electromagnetic reversing valve III, a 89 oil atomizer, a 90 reducing valve, a 91 air pump, a 92 air filter, a 93 ground iron, a 94 coupler and a 95 crankshaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The embodiment of the utility model discloses machining center main shaft blind rivet and dish spring reliability test device, can acquire fault data fast through laboratory reliability bench test, operational data and maintenance data, and testing condition is controllable, the experimentation can duplicate, overcome very well and acquire fault data through the on-the-spot reliability tracking test, operational data and maintenance data method not enough, also be the fault data who obtains a plurality of blind rivets-dish spring part in the short time, operational data and maintenance data, and then discover its weak link and carry out the improved design and provide reliability test basis, the contribution has been made for the improvement of machining center complete machine reliability.

A large amount of numerical control machine reliability data show that the main shaft rivet-disc spring component is one of key parts influencing the reliability of the numerical control machine; whether the main shaft rivet-disc spring component can normally work or not directly influences the work of the main shaft, the whole machine reliability level of the numerical control machine tool is seriously influenced, and the improvement of the reliability is the key for improving the whole machine reliability of the numerical control machine tool;

by developing a reliability test, weak links of reliability can be checked, and an improved design is proposed, so that the reliability test is one of main ways for improving the reliability of products; the development of the reliability test of the main shaft rivet-disc spring component of the machining center plays an important role in improving the reliability level of the main shaft rivet-disc spring component and further improving the reliability of the whole machine of the numerical control machine.

According to the principle and the requirement of a reliability test, the real working condition of a main shaft rivet-disc spring component of a machining center needs to be simulated to carry out the reliability test of the main shaft rivet-disc spring component of the machining center, and working condition load is applied to the main shaft rivet-disc spring component; because the reliability test time is long, the test cannot be carried out for a long time by a tester, and the reliability test device is required to be capable of automatically running. Automatic operation relies on the operation of automatic control devices.

In order to improve the efficiency of the reliability test, one machining center main shaft rivet-disc spring component reliability test device can simultaneously carry out the reliability test on a plurality of sets of main shaft rivet-disc spring components, so that the test device requires that the tested main shaft rivet-disc spring components are convenient and quick to replace, and meanwhile, the tested main shaft rivet-disc spring components are reasonable in layout and do not influence each other in the test device; meanwhile, the device has the capability of simulating the actual working condition of the tested main shaft blind rivet-disc spring component.

In summary, to achieve the above reliability test function of the spindle blind rivet-disc spring component, the following problems need to be solved:

1. the test can run automatically;

2. loading the simulated working condition load on the tested main shaft blind rivet-disc spring component;

3. meanwhile, the reliability test of a plurality of sets of main shaft blind rivet-disc spring components is realized;

4. the disassembly, assembly and arrangement of the tested main shaft rivet-disc spring part are convenient and reasonable.

To the above problem, a convenient and practical, easy dismounting's machining center main shaft blind rivet-dish spring part's reliability test device is provided, the utility model discloses digit control machine tool elasticity chuck reliability test device comprises simulation tool changing mechanism 1, simulation main shaft mechanism 2, simulation loading mechanism 3, automatic control device 4 and horizon iron 93. Utilize this test device, can realize effectively according to given reliability test method that the reliability test of being tried main shaft blind rivet-dish spring part, the utility model discloses above-mentioned problem has effectively been solved.

The ground flat iron 93 is arranged on a foundation, the simulation tool changing mechanism 1 is longitudinally arranged on one side of the ground flat iron 93, the simulation loading mechanism 3 is longitudinally arranged on the other side of the ground flat iron 93, and the simulation spindle mechanism 2 is longitudinally arranged in the middle of the ground flat iron 93; a tool handle in the simulation spindle mechanism 2 keeps in alignment with a tool grabbing manipulator of the simulation tool changing mechanism 1; a piston push rod of a cylinder 3 in the simulation loading mechanism keeps in alignment with a rotor shaft of the simulation main shaft mechanism 2; automatic control device 4 is installed on the ground of ground tie 93 one side through the switch board to automatic control device 4 and simulation loading mechanism 3, simulation tool changing mechanism 1 and simulation main shaft mechanism 2 electric connection.

Referring to fig. 5, 10, 11, and 12, the simulated tool changer 1 includes a third manipulator 8, a large manipulator 9, a second manipulator 10, a support arm 11, a first manipulator 12, and a coupling 94 in fig. 5; the slipway intermediate platform 62, the slipway top plate 63, the crankshaft support 82, the crankshaft support bearing end cover 83, the crank link 84, the motor 85, the guide rail slide 86 and the linear rolling guide 87 in fig. 10; in fig. 11, a second hand wheel 64, a second locking screw 65, a second locking seat 66, a second ball screw fixing unit 67, a sliding table base 68, a second ball screw pair 69, a second connecting seat 70, a second ball screw nut pair 71 and a second ball screw supporting unit 72; in fig. 12, a first hand wheel 73, a first locking screw 74, a first locking seat 75, a first ball screw fixing unit 76, a first ball screw 78, a first connecting seat 79, a first ball screw nut pair 80, and a first ball screw supporting unit 81 are provided.

Referring to fig. 5, the first mechanical arm 12, the second mechanical arm 10 and the third mechanical arm 8 are similar in structure and appearance, the front end of the first mechanical arm is a half-moon-shaped clamping arm, the first mechanical arm extends out a distance along the tangential direction, the rear part of the first mechanical arm is a support, 4 bolt through holes are formed in the rear part of the first mechanical arm, and the first mechanical arm, the second mechanical arm and the third mechanical arm are fixedly installed on the large mechanical arm 9 through bolts and nuts. The connecting part of the large mechanical arm 9 and the supporting arm 11 is a concave disc surface, the connecting part is provided with 4 bolt through holes which are uniformly distributed at 90 degrees, and the large mechanical arm 9 and the supporting arm 11 are fixed through bolts and nuts.

Referring to fig. 5 and 10, four sets of counter bores are arranged on the base of the support arm 11 in fig. 5, each set of counter bores includes two counter bores, and the distribution of each set of counter bores is consistent with the distribution of two threaded blind holes on the guide rail sliding block 86; the four guide rail sliding blocks 86 are arranged on the two linear rolling guide rails 87, and each linear rolling guide rail 87 is provided with four uniformly distributed countersunk holes for fixedly connecting the thread blind holes of the sliding table top plate 63. The base of the supporting arm 11 is provided with two external lugs with the same structure, the two external lugs are provided with a through hole for fixedly connecting the big end of the connecting rod 84, and the small end of the connecting rod is provided with a through hole for fixedly connecting the through hole on the crank shaft 95. Axial positioning is carried out with the shaft shoulder of crank axle 95 to deep groove ball bearing in the crank axle supporting seat 82, the cooperation between the lateral surface of crank axle 95 and the deep groove ball bearing inner circle is transition fit, laminating of deep groove ball bearing outer lane one side and crank axle supporting seat 82, the opposite side is fixed by crank axle supporting seat bearing end cover 83, the bearing end cover terminal surface is provided with 4 bolt through-holes that are 90 evenly distributed and is used for fixed connection crank axle supporting seat 82, be provided with 4 screw thread blind holes that are 90 evenly distributed on crank axle supporting seat 82 and the cooperation of crank axle supporting seat bearing end cover 83, be provided with 2 bolt through-holes with crank axle supporting seat 82 central plane symmetry on the crank axle supporting seat 82 and be used for fixed connection slip table. The end of the crankshaft 95 is provided with a key groove, the end of the outward extending shaft of the motor 85 is provided with a key groove, the crankshaft 96 is in key connection with the outward extending shaft of the motor 85 through a

coupler

94, 2 groups of bolt through holes symmetrical with the central vertical plane of the motor 85 are arranged on the supporting seat of the motor 85, and each group is provided with 2 bolt through holes for fixedly connecting the sliding table top plate 63.

Referring to fig. 12, 2 groups of bolt through holes symmetrical with a central symmetry plane of the first connecting seat 79 are formed in the connecting surface of the first ball screw nut pair 80 and the first connecting seat 79, each group of screw through holes are provided with 3 bolt through holes which are uniformly distributed by 30 degrees and are used for fixedly connecting the first ball screw nut pair 80, the first ball screw 78 is installed on a sliding table middle platform, the outer side surface of a screw extending shaft of the first ball screw 78 is in clearance fit with the inner hole surface of a locking sheet in the first locking seat 75, the outer side surface of the locking sheet is in transition fit with the inner hole wall of the first locking seat 75, and the first locking seat 75 is provided with a screw through hole which is matched with the first locking screw 74. The first locking seat 75 is provided with 2 bolt through holes which are symmetrical about the central plane of the first locking seat 75 and are used for fixedly connecting the sliding table middle platform 62.

Referring to fig. 11, two sets of bolt through holes symmetrical about the central plane of the second connecting seat 70 are formed on the connecting surface of the second connecting seat 70 and the sliding table middle platform 62, each set has 2 bolt through holes for fixedly connecting the sliding table top plate 63, two sets of bolt through holes symmetrical about the central plane of the second connecting seat 70 are formed on the connecting surface of the second connecting seat 70 and the second ball screw nut pair 71, each set has 3 bolt through holes uniformly distributed at 30 degrees for fixedly connecting the second ball screw nut pair 71, the second ball screw 69 is mounted on the sliding table middle platform 62, the outer side surface of the screw shaft of the second ball screw 69 is in clearance fit with the inner hole surface of the locking plate in the second locking seat 66, the outer side surface of the locking plate is in transition fit with the inner hole wall of the second locking seat 66, the second locking seat 66 is provided with a thread through hole for matching with the second locking screw 65, the second locking seat 66 is provided with 2 bolt through holes which are symmetrical with the central plane of the second locking seat 66 and are used for fixing the sliding table base 68; the slip table base 68 is provided with 4 seat ears, divide into two sets ofly, and the distance is the same between two liang of 2 seat ears of a set of 2 seat ears, and the symmetry plane distributes with 2 seat ears of the aforesaid in the middle of a set of 2 seat ear slip table bases in addition, and 4 seat ears that whole slip table base 68 set up are used for with horizontal iron 93 fixed connection.

Referring to fig. 4, the simulation spindle mechanism 2 includes the simulation spindle mechanism outer casing 6 in fig. 4, the simulation spindle mechanism outer casing 6 is a box-type part, six seat lugs are arranged on a base of the simulation spindle mechanism outer casing 6, the base is divided into two groups, distances between every two three seat lugs in one group are the same, the other three seat lugs in the other group are symmetrically distributed with the three seat lugs along a middle plane of the simulation spindle mechanism outer casing 6, and the six seat lugs arranged on the whole simulation spindle mechanism 2 are used for being fixedly connected with the ground iron 93.

Referring to fig. 6, the rotor shaft outer assembly parts in the simulated spindle mechanism 2 include a rear large cover 13, a rear nut 14, a 7014-1C bearing i 15, a rear outer spacer 16, a rear inner spacer 17, a 7014-1C bearing ii 18, a rotor inner sleeve 19, a front nut 21, a 7019AC bearing i 22, a front outer spacer 23, a front inner spacer 24, a 7019AC bearing ii 25, a rotary outer labyrinth seal 26, a fixed inner labyrinth seal 27, and a front small cover 28.

In fig. 4, the structure of three holes of the simulated spindle mechanism outer shell 6 is the same, six threaded blind holes which are uniformly distributed at 120 degrees and used for fixedly connecting the front small covers 28 are arranged on the end face with the smallest opening aperture, and six threaded blind holes which are uniformly distributed at 120 degrees and used for fixedly connecting the rear large cover 13 are arranged on the end face of the hole with the second largest opening aperture. The outer part of the rotor shaft is provided with a three-section stepped shaft from a maximum outer diameter shaft shoulder, a pair of labyrinth seal rings are axially positioned and fixed through the maximum outer diameter shaft shoulder, an outer labyrinth seal ring 26 of the rotating labyrinth seal ring is in interference fit with the outer side surface of the rotor shaft, an inner labyrinth seal ring 27 of the fixed labyrinth seal ring is in transition fit with the inner hole wall of the outer shell 6 of the simulated spindle mechanism, a pair of oppositely-installed angular contact ball bearings are respectively a 7014-1C bearing I15 and a 7014-1C bearing II 18, the 7014-1C bearing I15 and the 7014-1C bearing II 18 are axially positioned and fixed through the labyrinth seal rings, the angular contact ball bearings are in transition fit with the outer side surface of the rotor shaft and the inner hole wall of the outer shell 6 of the simulated spindle mechanism, a front inner spacer 24 and a front outer spacer 23 are arranged between the angular contact ball bearings for axial positioning, and the front inner spacer, the front outer spacer 36 is in transition fit with the inner hole wall of the outer shell 6 of the simulation main shaft mechanism, and the front nut 21 is fixedly connected with the outer side surface of the rotor shaft through threads. The rotor inner sleeve 19 is axially positioned and fixed through a second large outer diameter shaft shoulder, a pair of oppositely installed angular contact ball bearings are 7019AC bearing I22 and 7019AC bearing II 25, the 7019AC bearing I22 and the 7019AC bearing II 25 are axially positioned and fixed through the rotor inner sleeve, the angular contact ball bearings are in transition fit with the outer side face of the rotor shaft and the inner hole wall of the rear large cover 13, a rear inner spacer 17 and a rear outer spacer 16 are arranged between the angular contact ball bearings for axial positioning, the rear inner spacer 17 is in interference fit with the outer side face of the rotor shaft, the rear outer spacer 16 is in transition fit with the inner hole wall of the rear large cover 13, and the rear nut 14 is fixedly connected with the outer side face of the tail portion of the rotor shaft through threads.

Referring to fig. 9, the first analog spindle element is composed of a first anti-loose sleeve 29, a first pull rod nut 30, a first guide sleeve 31, a first pull rod 32, a first rotor shaft 33, a first disc spring 34, a first disc spring adjusting pad 35, a first pull claw 36, a first pull nail 37, a first end face key 38 and a first tool shank 39. Wherein, the first rotor shaft 33 is a hollow shaft, the parts arranged on the inner side of the first rotor shaft 33 from right to left are respectively a first knife handle 39, a first blind rivet 37, a first pull claw 36, a first pull rod 32, a first disc spring 34, a first disc spring adjusting pad 35, a first guide sleeve 31, a first pull rod nut 30 and a first anti-loose sleeve 29, the rotation center line of the parts arranged on the inner side of the first rotor shaft 33 is collinear with the rotation center line of the rotor shaft, the first knife handle 39 is matched with the first rotor shaft 33 through a 7:24 taper hole along the inner hole of the first rotor shaft 33 from right to left, the small end surface of the first knife handle 39 is provided with a threaded blind hole, the external thread at the tail part of the first blind rivet 37 is fixedly connected with the threaded blind hole at the small end surface of the first knife handle 39, the four claws of the first pull claw 36 clamp the pull head of the first pull nail 37, the pull claw head of the first pull claw 36 is provided with a section of thread fixedly connected with the pull rod end surface of the first pull rod 32, the outer side surfaces of a first disc spring 34 and a first pull rod 32 and the inner hole surface of a first rotor shaft 33 are in clearance fit, a first disc spring adjusting pad 35 divides the first disc spring 34 into a plurality of first disc spring groups uniformly, the first disc spring groups are connected in series and segmented, the first disc spring adjusting pad 35, the inner hole surface of the first rotor shaft 33 and the outer side surface of the first pull rod 32 are in transition fit, a first disc spring group and a first pull rod nut 30 are separated by a first guide sleeve 31, the outer side surfaces of the first guide sleeve 31, the first pull rod 32 and the inner hole surface of the first rotor shaft 33 are in clearance fit, the external thread at the tail of the first pull rod 32 is fixedly connected with the first pull rod nut 30 through threads, the end surface of the pull rod nut is provided with 4 threaded blind holes which are uniformly distributed at 90 degrees and are used for fixedly connecting a first anti-loosening sleeve 29, and the end surface of the first rotor shaft 33 with a conical hole is provided with 2 threads which are symmetrical to a rotor shaft 33 rotating axis and are used for fixedly connecting 2 first end surface keys 38.

Referring to fig. 8, the first analog spindle element is composed of a second anti-loosening sleeve 40, a second pull rod nut 41, a second guide sleeve 42, a second pull rod 43, a second rotor shaft 44, a second disc spring 45, a second disc spring adjusting pad 46, a second pull claw 47, a second pull nail 48, a second end face key 49 and a second tool shank 50. Wherein the second rotor shaft 44 is a hollow shaft, the parts arranged on the inner side of the second rotor shaft 44 from right to left are respectively a second knife handle 50, a second blind rivet 48, a second pull claw 47, a second pull rod 43, a second disc spring 45, a second disc spring adjusting pad 46, a second guide sleeve 42, a second pull rod nut 41 and a second anti-loosening sleeve 40, the rotation center lines of the parts arranged on the inner side of the second rotor shaft 44 are collinear with the rotation center line of the rotor shaft, from right to left along the inner hole of the rotor shaft, the second knife handle 50 is matched with the second rotor shaft 44 through a 7:24 taper hole, the small end face on the left side of the second knife handle 50 is provided with a threaded blind hole, the external thread on the tail part of the second blind rivet 48 is fixedly connected with the threaded blind hole on the small end face on the left side of the second knife handle 50, the four claws of the second pull claw 47 clamp the pull head of the second blind rivet 48, the pull claw head of the second pull claw 47 is provided with a section of a threaded blind hole fixedly connected with the pull rod end face of the second pull, the disc spring 45, the outer side face of the pull rod II and the inner hole face of the rotor shaft II are in clearance fit, the disc spring adjusting pad 46 divides the disc spring 45 into a plurality of disc spring groups II, the disc spring groups II are connected in series and are segmented, the disc spring adjusting pad 46, the inner hole face of the rotor shaft 44 and the outer side face of the pull rod 43 are in transition fit, the disc spring groups II are separated from the pull rod nut 41 through the guide sleeve 42 II, the guide sleeve 42, the outer side face of the pull rod 43 and the inner hole face of the rotor shaft 44 are in clearance fit, the external thread at the tail of the pull rod 43 is fixedly connected with the pull rod nut 41 through threads, the pull rod nut 41 is provided with 4 threaded blind holes which are uniformly distributed at 90 degrees and are used for fixedly connecting the anti-loosening sleeve 40, and the end face of the rotor shaft 44 with the conical holes is provided with 2 threads which are symmetrical to the rotation axis of the rotor shaft 44 and are used for fixing the end face key 49.

Referring to fig. 7, the third analog spindle element is composed of a third anti-loosening sleeve 51, a third pull rod nut 52, a third guide sleeve 53, a third disc spring 54, a third disc spring adjusting pad 55, a third pull rod 56, a third rotor shaft 57, a third pull claw 58, a third pull nail 59, a third knife handle 60 and a third end face key 61. Wherein the third rotor shaft 57 is a hollow shaft, the parts assembled on the inner side of the third rotor shaft 57 from right to left are respectively a third tool shank 60, a third blind rivet 59, a third pull claw 58, a third pull rod 56, a third disc spring 54, a third disc spring adjusting pad 55, a third guide sleeve 53, a third pull rod nut 52 and a third anti-loose sleeve 51, the rotation center lines of the parts assembled on the inner side of the third rotor shaft 57 and the rotation center line of the rotor shaft are collinear, the third tool shank 60 and the third rotor shaft 57 are matched through a 7:24 taper hole along the inner hole of the rotor shaft from right to left, the small end face of the third tool shank 60 is provided with a threaded blind hole, the external thread at the tail part of the third blind rivet 59 is fixedly connected with the threaded blind hole at the small end face of the third tool shank 60, the four claws of the third pull claw 58 clamp the pull head of the third pull nail 59, the pull claw head of the third pull claw 58 is provided with a section of external thread fixedly connected with the threaded blind hole at the pull rod end face of the, the outer side surfaces of a third disc spring 54 and a third pull rod 56 and the shaft inner hole surface of a third rotor shaft 57 are in clearance fit, the third disc spring adjusting pad 55 divides the third disc spring 54 into a plurality of third disc spring groups, the third disc spring groups are connected in series and segmented, the third disc spring adjusting pad 55 and the shaft inner hole surface and the third outer side surface of the third rotor shaft 57 are in transition fit, the third disc spring groups and a third pull rod nut 52 are separated by a third guide sleeve 53, the third guide sleeve 53 and the outer side surfaces of the third pull rod 56 and the shaft inner hole surface of the third rotor shaft 57 are in clearance fit, the external thread at the tail part of the third pull rod 56 is fixedly connected with the third pull rod nut 52 through threads, the end surface of the pull rod nut is provided with 4 threaded blind holes which are uniformly distributed at 90 degrees and are used for fixedly connecting a third anti-loosening sleeve 51, and the end surface of the third rotor shaft 57 with a conical hole is provided with 2 threads which are symmetrical to the rotating shaft 57 rotating axis of the third rotor shaft and are used for fixing a third end surface key 61.

Referring to fig. 2 and 3, the simulation loading mechanism 3 in the technical scheme comprises a first cylinder 3-1, a second cylinder 3-2, a third cylinder 3-3, a first cylinder front support 4-1, a second cylinder front support 4-2, a third cylinder front support 4-3, a first cylinder connector 1-1, a second cylinder connector 1-2, a third cylinder connector 1-3, a first cylinder push rod 2-1, a second cylinder push rod 2-2, a third cylinder push rod 2-3, a first cylinder rear support 5-1, a second cylinder rear support 5-2 and a third cylinder rear support 5-3. The head parts of piston push rods of the first cylinder 3-1, the second cylinder 3-2 and the third cylinder 3-3 are respectively welded with a first cylinder connector 1-1, a second cylinder connector 1-2 and a third cylinder connector 1-3; the front end of the first air cylinder 3-1 is fixedly connected with the upper end of the first air cylinder front support 4-1 through a bolt, and the front end of the first air cylinder front support is fixedly connected with the upper end of the first air cylinder rear support 5-1 through a bolt; the front end of the second cylinder 3-2 is fixedly connected with the upper end of a second cylinder front support 4-2 through bolts, and the front end of the second cylinder front support is fixedly connected with the upper end of a second cylinder rear support 5-2 through bolts; the front end of the third cylinder 3-3 is fixedly connected with the upper end of a front support 4-3 of the third cylinder by bolts, and the front end of the third cylinder is fixedly connected with the upper end of a rear support 5-3 of the third cylinder by bolts; bases of a first cylinder front support 4-1, a second cylinder front support 4-2, a third cylinder front support 4-3, a first cylinder rear support 5-1, a second cylinder rear support 5-2 and a third cylinder rear support 5-3 are fixed on a ground flat iron 93 through bolts.

Referring to fig. 14, the three-position four-way electromagnetic directional valve 88 and the air pump 91 are selected according to the test requirements and standards, and the oil atomizer 89, the pressure reducing valve 90 and the air filter 92 form a pneumatic triple piece, so that the functions of protecting equipment and prolonging the service life of the equipment are achieved, and the three-position four-way electromagnetic directional valve and the air pump are selected according to the standards.

The action control of the reliability test device for the main shaft blind rivet-disc spring component of the machining center is realized by an automatic control device 4.

Referring to fig. 13, the automatic control device 4 is composed of a control cabinet 7, and a display, a keyboard input device, an upper industrial personal computer 20, a lower programmable controller 77, a three-position four-way solenoid valve 88-1, a three-position four-way solenoid valve 88-2, and a three-position four-way solenoid valve 88-3 installed in the control cabinet.

Referring to fig. 15, the lower programmable controller 77 has four interfaces, the interface in the up direction is connected to the upper industrial personal computer 20 by a communication line, and the interface in the down direction is connected to the three-position four-way solenoid directional valves 88-1, 88-2, and 88-3 by a communication line. Control programs and control instructions in the upper industrial personal computer 20 are input to the upper industrial personal computer 20 by means of a keyboard, and are finally displayed on a display of the industrial personal computer 20.

The control interface of the upper industrial personal computer 20 can be compiled by a mature VC + + language, and test parameters such as the motion frequency, the motion distance, the test time and the like of each cylinder are input and controlled on the control interface of the upper industrial personal computer 20. The upper industrial personal computer 20 mainly realizes the function of communicating with the lower programmable controller 77 through a serial port. The lower programmable controller 77 controls the three-position four-way electromagnetic directional valve 88 to be in a power-on state and a power-off state, so as to control the movement frequency and the reciprocating distance of the cylinder 3, as shown in fig. 14, when the left position of the three-position four-way electromagnetic directional valve 88 is electrically connected, the cylinder 3 extends out of the work station and enters, and when the right position of the three-position four-way electromagnetic directional valve 88 is electrically connected, the cylinder 3 retracts. The lower programmable controller 77 controls the three-position four-way electromagnetic directional valve 88 to reciprocate the cylinder 3 to realize the actions of loosening and tightening the broach.

To sum up, rely on the VC + + program of compiling in the upper industrial computer 20, right the utility model discloses each part of machining center main shaft blind rivet-dish spring part reliability test device realizes automatic control.

Referring to fig. 1, 2 and 5, a ground iron 93 is installed on a foundation, a simulation tool changer 1 is installed on one side of the ground iron 93 along a longitudinal direction, a simulation loading mechanism 3 is installed on the other side of the ground iron 93 along the longitudinal direction, and a simulation spindle mechanism 2 is installed in the middle of the ground iron 93 along the longitudinal direction. The simulated tool changing mechanism 1 is positioned right in front of the simulated spindle mechanism 2, wherein a first manipulator 12 in the simulated tool changing mechanism 1 grasps a first tool shank 39 in the simulated spindle mechanism 2 when a tool changing process is simulated, a second manipulator 10 in the simulated tool changing mechanism 1 grasps a second tool shank 50 in the simulated spindle mechanism 2 when a tool changing process is simulated, and a third manipulator 8 in the simulated tool changing mechanism 1 grasps a third tool shank 60 in the simulated spindle mechanism 2 when a tool changing process is simulated; the center line of an arc-shaped paw of a first manipulator 12 in the simulation tool changing mechanism 1 is collinear with the rotation central axis of a first simulation main shaft element in the simulation main shaft mechanism 2, the center line of an arc-shaped paw of a second manipulator 10 in the simulation tool changing mechanism 1 is collinear with the rotation central axis of a second simulation main shaft element in the simulation main shaft mechanism 2, and the center line of an arc-shaped paw of a third manipulator 8 in the simulation tool changing mechanism 1 is collinear with the rotation central axis of a third simulation main shaft element in the simulation main shaft mechanism 2. The cylinder connector 1-1 of the first cylinder 3-1 of the analog loading mechanism 3 is contacted with the end surface of the first anti-loosening sleeve 29 in the analog spindle mechanism 2, and the rotating center line of the first cylinder 3-1 is collinear with the rotating center line of the first analog spindle element in the analog spindle mechanism 2; the cylinder connector 1-2 of the second cylinder 3-2 of the analog loading mechanism 3 is contacted with the end face of the second anti-loosening sleeve 40 in the analog spindle mechanism 2, and the rotation center line of the second cylinder 3-2 is collinear with the rotation center line of the second analog spindle element in the analog spindle mechanism 2; the cylinder connector 1-3 of the third cylinder 3-3 of the analog loading mechanism 3 is contacted with the end surface of the third anti-loosening sleeve 51 in the analog spindle mechanism 2, and the rotation center line of the third cylinder 3-1 is collinear with the rotation center line of the third analog spindle element in the analog spindle mechanism 2; the automatic control device 4 is installed on a foundation around a ground flat iron 64 through a control cabinet 44 therein, is positioned on the side of an interaction whole body consisting of the simulation tool changing mechanism 1, the simulation spindle mechanism 2 and the simulation loading mechanism 3, and is used for controlling the movement of the whole body of the machining center spindle blind rivet-disc spring component reliability test device.

Working principle of reliability test device for main shaft blind rivet-disc spring component of machining center

Referring to fig. 14, when the three-position four-way electromagnetic directional valve 88 is energized from the left, the first cylinder 3-1, the second cylinder 3-2 and the third cylinder 3-3 extend out of the working chamber, and when the three-position four-way electromagnetic directional valve 88 is energized from the right, the first cylinder 3-1, the second cylinder 3-2 and the third cylinder 3-3 retract. The first cylinder 3-1, the second cylinder 3-2 and the third cylinder 3-3 reciprocate by controlling the three-position four-way electromagnetic directional valve 88 to perform the actions of loosening and tightening the broach of the rivet-disc spring component in each simulation spindle element in the simulation spindle mechanism 2. When the first cylinder 3-1, the second cylinder 3-2 and the third cylinder 3-3 reciprocate, the crank connecting rod 84 controlled by the motor 85 drives the supporting arm 11 to move back and forth on the linear rolling slide rail 87, each manipulator of the simulated tool changing mechanism 1 tightly grasps each tool shank of the simulated spindle mechanism 2, and tool changing action during tool drawing tightness is simulated.

Because the device can simultaneously perform reliability tests on three sets of main shaft rivet-disc spring components, the three sets of main shaft rivet-disc spring components may not fail simultaneously, and if a certain main shaft rivet-disc spring component fails, the main shaft rivet-disc spring component can continue to be tested only after being replaced by a normal main shaft rivet-disc spring component, so that the reliability test efficiency of the rivet-disc spring component is improved, and the test cost is reduced.

In the specific implementation process, the utility model discloses machining center main shaft blind rivet-dish spring part reliability test device can accept or reject or the deformation as required:

1. the load loading of the main shaft rivet-disc spring component can be realized by various modes, such as a hydraulic cylinder, a cylinder unclamping cylinder, a composite hydraulic unclamping cylinder or other mechanical structures.

2. The reliability test device for the main shaft rivet-disc spring components of the machining center is used for simultaneously carrying out reliability tests on three sets of main shaft rivet-disc spring components, and also can carry out reliability tests on three sets of main shaft rivet-disc spring components or more than three sets of main shaft rivet-disc spring components or less than three sets of main shaft rivet-disc spring components while slightly changing the reliability test device for the main shaft rivet-disc spring components of the machining center, but the whole effect is not changed by the changes.

In addition, the embodiment of the present invention is to facilitate the technical personnel in the technical field to understand and apply the present invention, which is an optimized embodiment, or a specific technical solution with better performance, it is only suitable for the reliability test of the spindle blind rivet-disc spring component with the spindle blind rivet-disc spring component quantity in a certain range, the reliability test of the spindle blind rivet-disc spring component of the machining center with the spindle blind rivet-disc spring component quantity out of the range can adopt the technical solution that is basically unchanged, but the quantity of the used components will be changed accordingly, such as increasing the simulation spindle quantity, the cylinder quantity, etc., so the present invention is not limited to the description of the specific technical solution in the embodiment.

The utility model discloses there can also be other implementation modes, for example: the air cylinder is changed into the hydraulic cylinder for testing, if the movement of the motor control cam is adopted, the tool changing can be simulated, and the linear motor can be arranged on the cross sliding table for tool changing simulation. In conclusion, if the related technical personnel make the equivalent structural change or various modifications without creative efforts while adhering to the basic technical scheme of the invention, the protection scope of the invention is within the scope of the invention.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The reliability test device for the blind rivet and the disc spring of the main shaft of the machining center is characterized by comprising a simulation tool changing mechanism, a simulation main shaft mechanism, a simulation loading mechanism, an automatic control device and a ground flat iron;

2. The device for testing the reliability of a processing center spindle blind rivet and a disc spring according to claim 1, wherein the analog spindle mechanism comprises a first analog spindle element, a second analog spindle element, a third analog spindle element and an analog spindle mechanism outer shell; the rotor shaft outer structures of the first simulation main shaft element, the second simulation main shaft element and the third simulation main shaft element are matched in the same way;

the first simulation main shaft element, the second simulation main shaft element and the third simulation main shaft element are installed on the simulation main shaft mechanism outer shell, the distances between the first simulation main shaft element, the second simulation main shaft element and the third simulation main shaft element which are adjacent to each other are equal, and the heights of the first simulation main shaft element, the second simulation main shaft element and the third simulation main shaft element from the ground plain iron are equal.

3. The device for testing the reliability of the blind rivet and the disc spring of the main shaft of the machining center according to claim 2, wherein the outer shell of the simulation main shaft mechanism is fixedly connected with the ground iron by a T-shaped bolt.

4. The device for testing the reliability of the processing center spindle rivet and the disc spring according to claim 3, wherein the outer shell of the simulation spindle mechanism is of a box-type structure, six seat lugs are arranged on a base of the outer shell of the simulation spindle mechanism and divided into two groups, the distance between every two three seat lugs in one group is the same, the three seat lugs in the other group are symmetrically distributed with the three seat lugs along a middle vertical plane of the outer shell of the simulation spindle mechanism, and the six seat lugs arranged on the whole simulation spindle mechanism are fixedly connected with a ground iron; the simulation main shaft mechanism shell is provided with three holes, the three holes are identical in structural design, six threaded blind holes which are uniformly distributed at 60 degrees and are used for fixedly connecting the front small covers are arranged on the end face with the smallest opening hole diameter of each hole, and six threaded blind holes which are uniformly distributed at 60 degrees and are used for fixedly connecting the rear large covers are arranged on the end face of the hole with the second largest opening hole diameter.

5. The device for testing the reliability of the blind rivet and the disc spring of the main shaft of the machining center according to claim 2, wherein the first simulation main shaft element belongs to a shaft type structural member and comprises a first rotor shaft, the first rotor shaft is a hollow shaft, a first tool handle, a first blind rivet, a first pulling claw, a first pulling rod, a first disc spring adjusting pad, a first guide sleeve, a first pulling rod nut and a first gland are respectively arranged in the rotor shaft from right to left, the rotating center lines of the first tool handle, the first pulling rivet, the first pulling claw, the first pulling rod, the first disc spring adjusting pad, the first guide sleeve, the first pulling rod nut and the first gland are collinear with the rotating center line of the first rotor shaft, the tool handle is arranged from right to left along the inner hole of the first rotor shaft, and the first tool handle is matched with the first rotor shaft through a 7:24 taper hole;

6. The device for testing the reliability of the blind rivet and the disc spring of the main shaft of the machining center according to claim 5, wherein the first rotor shaft is provided with a three-section stepped shaft from a shaft shoulder with the maximum outer diameter, and a pair of labyrinth sealing rings are axially positioned and fixed through the shaft shoulder with the maximum outer diameter; the rotary sealing ring is in interference fit with the outer side face of the first rotor shaft; the inner hole wall of the outer shell of the simulation main shaft mechanism is in transition fit with the inner hole wall of the outer shell of the simulation main shaft mechanism through a fixed sealing ring; a pair of angular contact ball bearings which are installed reversely are axially positioned and fixed through a labyrinth seal ring, the angular contact ball bearings are in transition fit with the outer side surface of the first rotor shaft and the inner hole wall of the simulation main shaft mechanism shell, a front inner spacer and a front outer spacer are arranged between the angular contact ball bearings for axial positioning, the front inner spacer is in interference fit with the outer side surface of the first rotor shaft, and the front outer spacer is in transition fit with the inner hole wall of the simulation main shaft mechanism shell; a front nut is fixedly connected to the outer side surface of the first rotor shaft through threads; the pair of reversely mounted angular contact ball bearings are axially positioned and fixed through a rotor inner sleeve, the rotor inner sleeve is axially positioned and fixed through a second large-outer-diameter shaft shoulder, and the angular contact ball bearings are in transition fit with the outer side surface of the first rotor shaft and the inner hole wall of the rear large cover; a rear inner spacer and a rear outer spacer are arranged between the angular contact ball bearings for axial positioning, the rear inner spacer is in interference fit with the outer side face of the first rotor shaft, the rear outer spacer is in transition fit with the inner hole wall of the rear big cover, and a rear nut is fixedly connected to the outer side face of the tail of the first rotor shaft in a threaded connection mode.

7. The device for testing the reliability of a blind rivet and a disc spring of a main shaft of a machining center according to claim 2, it is characterized in that the second analog main shaft element is a shaft structural part and comprises a second rotor shaft, the second rotor shaft is a hollow shaft, the parts in the second rotor shaft from right to left are respectively a second knife handle, a second blind rivet, a second pull claw, a second pull rod, a second disc spring adjusting pad, a second guide sleeve, a second pull rod nut, a second anti-loosening sleeve and a second gland, the rotary central lines of the second knife handle, the second blind rivet, the second pull claw, the second pull rod, the second disc spring adjusting pad, the second guide sleeve, the second pull rod nut and the second anti-loosening sleeve are collinear with the rotary central line of the second rotor shaft, the right side to the left side is arranged along the inner hole of the second rotor shaft, and the second knife handle is matched with the second rotor shaft through a 7:24 taper hole;

8. The device for testing the reliability of the blind rivet and the disc spring of the main shaft of the machining center according to claim 2, wherein the third simulation main shaft element is a shaft type structural member and comprises a third rotor shaft, the third rotor shaft is a hollow shaft, the parts in the third rotor shaft from right to left are a third tool shank, a third blind rivet, a third claw, a third pull rod, a third disc spring adjusting pad, a third guide sleeve, a third pull rod nut and a third gland respectively, the turning center lines of the third tool shank, the third blind rivet, the third pull rod, the third disc spring adjusting pad, the third guide sleeve, the third pull rod nut and the third gland are collinear with the turning center line of the third rotor shaft, the third blind hole is matched with the third rotor shaft through a 7:24 taper hole along the inner hole of the third rotor shaft, and the end face of the third tool shank is provided with a threaded blind hole, the external thread at the tail part of the third blind rivet is fixedly connected with the threaded blind hole on the end surface of the third tool shank; four claws of the third pull claw clamp the pull head of the third pull nail, and the pull claw head of the third pull claw is provided with a threaded blind hole with a section of external thread fixedly connected with the end face of the pull rod of the third pull rod; the third disc spring is in clearance fit with the outer side surface of the third pull rod and the inner hole surface of the third rotor shaft;

9. The device for testing the reliability of the blind rivet and the disc spring of the main shaft of the machining center according to claim 1, wherein the analog loading mechanism comprises a first cylinder, a second cylinder, a third cylinder, a first cylinder front support, a second cylinder front support, a third cylinder front support, a first cylinder connector, a second cylinder connector, a third cylinder connector, a first cylinder rear support, a second cylinder rear support and a third cylinder rear support; the piston push rod heads of the first cylinder, the second cylinder and the third cylinder are respectively welded with a first cylinder connector, a second cylinder connector and a third cylinder connector; the front end of the first air cylinder is fixedly connected with the upper end of the first air cylinder front support through a bolt, and the front end of the first air cylinder is fixedly connected with the upper end of the first air cylinder rear support through a bolt; the front end of the second cylinder is fixedly connected with the upper end of the second cylinder front support through a bolt, and the front end of the second cylinder front support is fixedly connected with the upper end of the second cylinder rear support through a bolt; the front end of the third cylinder is fixedly connected with the upper end of the front support of the third cylinder through a bolt, and the front end of the third cylinder is fixedly connected with the upper end of the rear support of the third cylinder through a bolt; the bases of the first cylinder front support, the second cylinder front support, the third cylinder front support, the first cylinder rear support, the second cylinder rear support and the third cylinder rear support are fixed on the ground flat iron through bolts.

10. The device for testing the reliability of the blind rivet and the disc spring of the main shaft of the machining center according to claim 1, wherein the simulation tool changing mechanism comprises a first manipulator, a second manipulator, a third manipulator, a large mechanical arm, a linear rolling guide rail, a guide rail slider, a connecting rod, a crank shaft supporting seat, a coupler, a motor, a sliding table top plate, a sliding table middle platform, a first connecting seat, a first ball screw, a first locking device, a first hand wheel, a second connecting seat, a second ball screw, a second locking device, a second hand wheel and a sliding table base;

2 bolt through holes which are symmetrical with the central plane of the first locking seat are formed in the first locking seat and are used for fixedly connecting the middle platform of the sliding table; the surface of the second connecting seat connected with the middle platform of the sliding table is provided with 2 groups of bolt through holes which are symmetrical with the central plane of the second connecting seat, and each group is provided with 2 bolt through holes for fixedly connecting a top plate of the sliding table; the connecting surface of the second connecting seat and the second ball screw nut pair is provided with 2 groups of bolt through holes which are symmetrical by a central symmetrical plane of the second nut seat, each group of thread through holes are provided with 3 bolt through holes which are uniformly distributed at 30 degrees and are used for fixedly connecting the second ball screw nut pair, the second ball screw is arranged on a middle platform of the sliding table, the outer side surface of an extending shaft of the second ball screw is in clearance fit with the inner hole surface of a locking plate in the second locking seat, the outer side surface of the locking plate is in transition fit with the inner hole wall of the second locking seat, the second locking seat is provided with a thread through hole which is matched with a second locking screw, and the second locking seat is provided with 2 bolt through holes which are symmetrical by the central plane of the second locking seat and are used for fixing the base of; the slip table base is provided with 4 seat ears, divide into two sets ofly, and a set of 2 seat ears are the same between two liang, and a set of 2 seat ears set up to distribute with slip table base middle symmetry plane and above-mentioned 2 seat ears are symmetrical in addition, 4 seat ears that whole slip table base set up be used for with horizontal iron fixed connection.