CN110315094B - Automatic chamfering equipment for roller of overrunning clutch of medical machine - Google Patents
Automatic chamfering equipment for roller of overrunning clutch of medical machine Download PDFInfo
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- CN110315094B CN110315094B CN201910652254.4A CN201910652254A CN110315094B CN 110315094 B CN110315094 B CN 110315094B CN 201910652254 A CN201910652254 A CN 201910652254A CN 110315094 B CN110315094 B CN 110315094B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B23/00—Tailstocks; Centres
- B23B23/02—Dead centres
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B5/16—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor for bevelling, chamfering, or deburring the ends of bars or tubes
- B23B5/161—Devices attached to the workpiece
- B23B5/163—Devices attached to the workpiece with an external clamping device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q7/00—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting
- B23Q7/10—Arrangements for handling work specially combined with or arranged in, or specially adapted for use in connection with, machine tools, e.g. for conveying, loading, positioning, discharging, sorting by means of magazines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Turning (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention belongs to the technical field of medical machinery manufacturing equipment, and relates to automatic roller chamfering equipment for an overrunning clutch of medical machinery. The rotating wheel assembly is decelerated, the centrifugal force of the heavy hammer is reduced, the force for tightly holding the roller by the tight holding surface is small, the top is translated forwards to push out the roller before chamfering to replace the chamfered roller, the electromagnetic clutch is closed, the motor drives the rotating wheel assembly to rotate in an accelerating mode, the centrifugal force of the heavy hammer is increased, the force for tightly holding the roller before chamfering by the three tight holding surfaces is increased, the front chamfering is turned by the front turning tool, and the rear chamfering is turned by the rear turning tool. The rotating wheel assembly can load and unload workpieces without stopping completely, chamfers at two ends can be turned by one-time clamping, and the rotating wheel assembly is high in automation degree and working efficiency.
Description
Technical Field
The invention belongs to the technical field of medical machinery manufacturing equipment, relates to manufacturing equipment of an overrunning clutch of medical machinery, and particularly relates to automatic roller chamfering equipment for the overrunning clutch of the medical machinery.
Background
The medical machinery industry often needs to use an overrunning clutch, the overrunning clutch needs to use a roller, the outer cylindrical surface of the roller is generally formed by fine grinding on a grinding machine, the requirements on surface roughness and tolerance are quite high, and both ends of the roller are provided with chamfers.
The chamfer all is processed on center lathe in the tradition adds technology, and the chuck of lathe stops completely earlier, and the rotational speed becomes zero promptly, and artifical material loading is tight, starts the lathe, and artifical rocking car blade holder feed, and this end of car is dismantled again, and it presss from both sides tightly to rearrange another end again, starts the lathe, and artifical rocking car blade holder feed is accomplished another end and is dismantled again, and the lathe is stopped to open and is stopped the time of occuping longer, and work efficiency is fairly low.
And the numerical control lathe is also used for chamfering, the workpiece is manually placed in place, the numerical control lathe is automatically clamped, the workpiece is still unloaded by the manual tool after the chuck is completely stopped, the time for loading and unloading the workpiece during stopping is quite long, and the working efficiency is still lower.
The chamfering device is generally turned by one-time clamping on a lathe, and if the chamfering device can be turned out by one-time clamping at two ends, the working efficiency is doubled.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide the automatic roller chamfering equipment for the overrunning clutch of the medical machinery, which can automatically load and unload workpieces without stopping a rotating wheel assembly completely, can clamp and lathe two chamfers at a time, and has higher automation degree and higher working efficiency.
The invention is realized by the following technical scheme:
a roller automatic chamfering device for an overrunning clutch of medical machinery comprises a rack, a rotating assembly, a material warehouse, a front turning tool assembly, a rear turning tool assembly, a tip assembly, an electromagnetic clutch and a motor;
the rotating assembly comprises a rotating wheel assembly, three enclasping assemblies, a guide ring assembly, three link rods and three pressure springs;
the rotating wheel assembly comprises an outer ring, an inner ring sleeve, a connecting plate and three clasping connecting earrings; the outer ring is circular and comprises a large gear ring and an annular track, gear teeth are arranged on the large gear ring, and the axis of a reference circle of the large gear ring is superposed with the axis of the annular track; the outer ring and the inner ring sleeve are fixedly connected together through a connecting plate; each connecting plate is provided with a guide hole; the inner ring sleeve is in a sleeve shape, an outer cylindrical surface is arranged on the inner ring sleeve, and the axial lead of the outer cylindrical surface is superposed with the axial lead of the annular track; the three clasping connecting earrings are fixedly connected on the inner ring sleeve, each clasping connecting earring is provided with a clasping connecting earring hole, and the three clasping connecting earring holes are uniformly distributed in an array manner around the axial lead of the inner ring sleeve; the rack is provided with a rotating support plate, the rotating support plate is provided with three supporting rollers, the axial leads of the supporting rollers are arranged in the front-back horizontal direction, the supporting rollers are connected with the rotating support plate through revolute pairs, the outer cylindrical surface of the supporting rollers is tangent to the outer cylindrical surface of the annular track, and the three supporting rollers are uniformly distributed around the annular track, namely the rotating wheel assembly is connected with the rotating support plate through the revolute pairs;
the clasping component comprises three parts, namely a clasping claw, a swinging arm and a heavy hammer; a first clasping piece mounting hole is formed in the connecting part of the rear end of the clasping claw and one end of the swinging arm; a second clasping piece mounting hole is formed in the part where one end of the swinging arm is connected with the heavy hammer; the first clasping piece mounting hole is matched with the clasping connecting earring hole to form a hinge; the clamping claw is provided with a clamping surface, the clamping surface faces to the axial lead direction of the rotating wheel assembly, the heavy hammer is closer to the front than the clamping connection earring hole in the front-back direction, and the clamping surface is closer to the back than the clamping connection earring hole in the front-back direction; the distance between the second holding piece mounting hole and the axis of the annular track is longer than that between the first holding piece mounting hole and the axis of the annular track;
the guide ring assembly comprises a guide ring, three link rod earrings and three guide columns; the guide ring is provided with an inner cylindrical surface of the guide ring, the inner cylindrical surface of the guide ring and an outer cylindrical surface of the inner ring sleeve form sliding fit, the three guide columns respectively form sliding fit with the three guide hole groups, and the guide ring slides in the front-rear direction along the outer cylindrical surface; the three link rod earrings are respectively and fixedly connected around the guide ring, and each link rod earring is provided with a link rod earring hole; two ends of the link rod are respectively provided with a first link rod hole and a second link rod hole; the three link rod holes I are respectively matched with the three clasping member mounting holes II to form three hinges, and the three link rod holes II are respectively matched with the three link rod ear-ring holes to form three hinges; the compression spring is sleeved on the periphery of the guide post, the front end of the compression spring is tightly pressed on the connecting plate, and the rear end of the compression spring is tightly pressed on the front end of the guide ring; the pressure spring pushes the guide ring assembly backwards by means of elastic force, the guide ring assembly pulls the enclasping assembly through the link rod, the enclasping assembly has a tendency of swinging around an enclasping connection lug ring hole, and the three enclasping surfaces jointly enclasping a roller in front of a chamfer at the center of the circular track; when the rotating wheel assembly rotates, a heavy hammer generates centrifugal force, the enclasping assembly has the tendency of swinging around an enclasping connection earring hole, the guide ring, the enclasping assembly, the link rod and the inner ring sleeve jointly form a crank slider mechanism, wherein the inner ring sleeve is a guide rod, the guide ring is a slider, the enclasping assembly is a prime mover, and three enclasping surfaces jointly enclasping a roller positioned in front of a chamfer at the center of the annular track; namely, under the combined action of the elastic force of the pressure spring and the centrifugal force of the heavy hammer, the three holding surfaces hold the roller positioned in front of the chamfer at the center of the circular track together; the three clamping surfaces can clamp the roller or the roller in front of the chamfer angle together even if the rotating wheel assembly is in a stop state due to the elastic force of the pressure spring, and the workpiece cannot fall off when the rotating wheel assembly is in a fault shutdown state; the centrifugal force of the heavy hammer changes along with the rotating speed, so that the magnitude of the holding force can be conveniently adjusted by adjusting the rotating speed in the working process;
the crank-slider mechanism mentioned above refers to the crank-slider mechanism shown in fig. 3-19(a) on page 38 of "light industry mechanical design foundation", published by the chinese light industry press, and edited by the long and huge sources, wherein the scientific terms "guide bar", "slider" and "prime mover" are also from the chapter of the book;
the lower part of the material storehouse is provided with a vertical channel, a row of rollers before chamfering arranged in the vertical direction are accommodated in the vertical channel, the axial lead of the rollers before chamfering is in the front-back horizontal direction, the material storehouse is positioned behind the rotating assembly, and the axial lead of the roller before chamfering at the lowest part in the vertical channel is aligned with the axial lead of the annular track in the front-back direction; a front outlet hole is formed in the vertical channel in front of the roller before the lowest chamfer, and a tip through hole is formed in the vertical channel behind the roller before the lowest chamfer;
the centre assembly comprises a centre cylinder and a push rod; the top cylinder is a cylinder with a guide rod; the centre cylinder comprises a centre cylinder body and a centre cylinder piston rod; the push rod is cylindrical, the axis of the annular track is aligned with the axis of the push rod in the front-back direction, the rear end of the push rod is fixedly connected with the front tail end of a centre cylinder piston rod, and the front end of the push rod is provided with a centre; the center cylinder piston rod drives the push rod to perform reciprocating translation in the front-back direction; a piston rod of a centre cylinder drives a push rod to push forwards, a centre pushes a roller in front of the lowest chamfer in the vertical channel to translate forwards through a centre through hole, and the roller is pushed out forwards in a translation mode through a front outlet hole and replaces the roller held by the three holding surfaces together;
the flange of the shell of the motor is fixedly connected with the rotary support plate, and the input hole of the electromagnetic clutch is fixedly connected with the output shaft of the motor; the output element of the electromagnetic clutch is a gear, and the output gear of the electromagnetic clutch is meshed with the gear teeth on the large gear ring;
the front lathe tool component comprises a front cylinder and a front lathe tool; the front cylinder is a cylinder with a guide rod; the front cylinder comprises a front cylinder body and a front cylinder piston rod; the front lathe tool is fixedly connected with a front cylinder piston rod; a front cylinder piston rod drives a front turning tool to do piston motion relative to a front cylinder body; a front cylinder piston rod drives a front turning tool to extend out, and the front turning tool turns a front chamfer of the roller before the chamfer;
the rear lathe tool component comprises a rear cylinder and a rear lathe tool; the rear cylinder is a cylinder with a guide rod; the rear cylinder comprises a rear cylinder body and a rear cylinder piston rod; the rear turning tool is fixedly connected with a piston rod of the rear cylinder; the piston rod of the rear cylinder drives the rear turning tool to do piston movement relative to the rear cylinder body; and the piston rod of the rear cylinder drives the rear turning tool to extend out, and the rear turning tool turns the rear chamfer of the roller before the chamfer.
The workpiece refers to a roller in the process of processing or a roller after the processing.
The working process of the present invention is as follows.
0) An initial state.
The rollers before chamfering are placed in a material warehouse, the rollers before chamfering are all in the front-back horizontal direction, and a part of the rollers before chamfering are arranged in the vertical channel along the vertical direction.
The motor is in an on-idle state.
The electromagnetic clutch is in a disengaged state.
The rotating wheel assembly is in a decelerated rotation state under the action of inertia and friction force.
1) When the speed of the rotating wheel assembly is reduced to a lower speed, the centrifugal force of the heavy hammer is reduced, the force for the three holding surfaces to hold the roller together is smaller, the axial friction force between the three holding surfaces and the roller is also smaller, the center cylinder is started, the piston rod of the center cylinder drives the push rod to push forwards, the center pushes the roller before the lowest chamfer in the vertical channel to translate forwards through the center through hole, the roller which is held tightly by the three holding surfaces together and is turned is pushed forwards through the front hole and replaced, the roller falls into the material basket below, and the roller before the chamfer is left in the holding of the three holding surfaces. The gravity of the remaining rollers before chamfering in the vertical channel presses the upper side surface of the push rod.
2) The electromagnetic clutch is closed. The power of motor passes through electromagnetic clutch, the combination drive swiveling wheel subassembly of the gear tooth on electromagnetic clutch's output gear and the gear wheel circle is rotatory with higher speed, the centrifugal force that the weight produced is also along with the increase, the centrifugal force increase of weight leads to three the power increase of the roller before the chamfer of hugging closely the face, three the roller before the chamfer of hugging closely the face jointly hugging closely under the combined action of the elastic force of pressure spring and the centrifugal force of weight, when the axial frictional force that hugs closely the power production is enough to resist before lathe tool or the axial additional thrust that back lathe tool produced when car chamfer:
and the front cylinder drives the combination of the front cylinder piston rod and the front turning tool to translate towards the front corner of the roller before chamfering, and the front turning tool turns the front chamfer.
And the rear cylinder drives the combination of the piston rod of the rear cylinder and the rear turning tool to translate towards the rear corner of the roller before the chamfer, and the rear turning tool turns the rear chamfer.
The roller before chamfering is converted into a roller.
3) And (5) separating the electromagnetic clutch. The motor is in an idle state.
And the front cylinder is started reversely to drive the combination of the front cylinder piston rod and the front turning tool to leave the roller.
And the rear cylinder is reversely started to drive the combination of the piston rod of the rear cylinder and the rear turning tool to leave the roller.
The rotating wheel assembly is in a speed-reducing rotating state due to inertia, and the force of the three holding surfaces holding the roller together is smaller and smaller under the combined action of the elastic force of the pressure spring and the centrifugal force of the heavy hammer.
The center cylinder is reversely started, a piston rod of the center cylinder drives the push rod to retract backwards, the center always returns to the center through hole, the roller in front of the chamfer in the material warehouse falls under the action of gravity, the roller in front of the lowest chamfer falls to the bottom, the front of the roller in front of the lowest chamfer faces the front outlet hole, and the rear of the roller faces the center through hole.
The steps 1) to 3) are repeated ceaselessly, so that the roller before chamfering in the material warehouse is turned into the roller ceaselessly and falls into the material basket below, and the purposes of automatically loading and unloading workpieces and efficiently and automatically turning the roller chamfer without completely stopping the rotating wheel assembly are achieved.
The invention has the beneficial effects that: the rotating wheel assembly can load and unload workpieces without stopping completely, chamfers at two ends can be turned by one-time clamping, the automation degree is high, and the working efficiency is high.
Drawings
FIG. 1 is a schematic three-dimensional structure of an embodiment of the present invention;
fig. 2 is a plan view of an embodiment of the present invention, in which the center 621 is retracted all the way to the center through hole 33, the rollers 93 before chamfering in the magazine 3 fall down by gravity, and the lowermost roller 93 before chamfering falls down to the bottom;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
fig. 4 is a top view of an embodiment of the present invention, in which the center 621 pushes the roller 93 before chamfering to translate forward, and pushes out and replaces the roller 9 after chamfering, the front turning tool 42 turns the front chamfer 91, and the rear turning tool 52 turns the rear chamfer 92;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
FIG. 6 is a view taken along line C of FIG. 5;
fig. 7 is a schematic three-dimensional structure of the gantry 1;
fig. 8 is a schematic three-dimensional structure of the rotating assembly 2;
FIG. 9 is a partial cross-sectional view of the three-dimensional structure of the rotating wheel assembly 21;
figure 10 is a schematic three-dimensional structure of the clasping assembly 22;
FIG. 11 is a schematic three-dimensional view of the guide ring assembly 23;
FIG. 12 is a front view of link 24;
fig. 13 is a partial cross-sectional view of the three-dimensional structure of the magazine 3;
FIG. 14 is a schematic three-dimensional view of the forward turning tool assembly 4;
FIG. 15 is a schematic three-dimensional view of the rear bit assembly 5;
fig. 16 is a schematic three-dimensional structure of the tip assembly 6;
fig. 17 is a schematic three-dimensional structure of the roller 9;
shown in the figure: 1. a frame; 12. rotating the support plate; 121. supporting the rollers; 122. a motor mounting hole; 123. a velometer; 13. a stock support plate; 14. a front cylinder support plate; 15. a rear cylinder support plate; 16. a centre cylinder support plate;
2. a rotating assembly; 21. a rotating wheel assembly; 211. a large gear ring; 212. an annular track; 213. an inner ring sleeve; 214. an outer cylindrical surface; 215. a coupling plate; 2151. a guide hole; 216. a limit baffle; 217. clasping and connecting earrings; 2171. tightly clasping the lug ring hole; 22. a clasping component; 221. embracing a claw; 2211. a hugging surface; 222. swinging the arm; 223. a first mounting hole of the holding piece; 224. a second mounting hole of the holding piece; 225. a weight; 23. a guide ring assembly; 231. a guide ring; 2311. a cylindrical surface within the guide ring; 232. a link rod earring; 2321. a link rod earring hole; 233. a guide post; 24. a link rod; 241. a first connecting rod hole; 242. a second connecting rod hole; 25. a pressure spring;
3. a material warehouse; 31. a vertical channel; 32. a front outlet hole; 33. a center is provided with a through hole;
4. a front lathe tool assembly; 41. a front cylinder; 411. a front cylinder block; 412. a front cylinder piston rod; 42. a front turning tool;
5. a rear lathe tool assembly; 51. a rear cylinder; 511. a rear cylinder block; 512. a rear cylinder piston rod; 52. a rear turning tool;
6. a tip assembly; 61. a centre cylinder; 611. a tip cylinder body; 612. a centre cylinder piston rod; 62. a push rod; 621. a tip;
7. an electromagnetic clutch; 8. a motor;
9. a roller; 91. front chamfering; 92. chamfering the rear part; 93. and chamfering the front roller.
Detailed Description
The invention is further illustrated with reference to the following figures and examples:
example (b): see fig. 1-17.
A roller automatic chamfering device for an overrunning clutch of medical machinery comprises a rack 1, a rotating assembly 2, a material warehouse 3, a front turning tool assembly 4, a rear turning tool assembly 5, a tip assembly 6, an electromagnetic clutch 7 and a motor 8;
the rotating assembly 2 comprises a rotating wheel assembly 21, three clasping assemblies 22, a guide ring assembly 23, three connecting rods 24 and three pressure springs 25;
the rotating wheel assembly 21 comprises an outer ring, an inner ring sleeve 213, a connecting plate 215 and three clasping connecting earrings 217; the outer ring is circular and comprises a large gear ring 211 and an annular track 212, gear teeth are arranged on the large gear ring 211, and the axis of a reference circle of the large gear ring 211 is superposed with the axis of the annular track 212; the outer ring and the inner ring sleeve 213 are fixedly connected together through a connecting plate 215; each connecting plate 215 is provided with a guide hole 2151; the inner ring sleeve 213 is in a sleeve shape, an outer cylindrical surface 214 is arranged on the inner ring sleeve 213, and the axial lead of the outer cylindrical surface 214 is superposed with the axial lead of the annular track 212; the three clasping and connecting earrings 217 are fixedly connected to the inner ring sleeve 213, each clasping and connecting earring 217 is provided with a clasping and connecting earring hole 2171, and the three clasping and connecting earring holes 2171 are uniformly distributed in an array mode around the axial lead of the inner ring sleeve 213; the rack 1 is provided with a rotating support plate 12, the rotating support plate 12 is provided with three support rollers 121, the axial leads of the support rollers 121 are all arranged in the front-back horizontal direction, the support rollers 121 are all connected with the rotating support plate 12 through revolute pairs, the outer cylindrical surface of the support rollers 121 is tangent to the outer cylindrical surface of the annular track 212, and the three support rollers 121 are uniformly distributed around the annular track 212, namely the rotating wheel assembly 21 is connected with the rotating support plate 12 through the revolute pairs;
the clasping component 22 comprises three parts, namely a clasping claw 221, a swinging arm 222 and a heavy hammer 225; a first clasping piece mounting hole 223 is formed in the connecting part of the rear end of the clasping claw 221 and one end of the swinging arm 222; a second clasping piece mounting hole 224 is formed at the position where one end of the swinging arm 222 is connected with the heavy hammer 225; the first clasping piece mounting hole 223 is matched with the clasping and connecting earring hole 2171 to form a hinge; the holding claw 221 is provided with a holding surface 2211, the holding surface 2211 faces the axial lead direction of the rotating wheel assembly 21, the weight 225 is located forward of the holding and coupling ear ring hole 2171 in the front-rear direction, and the holding surface 2211 is located rearward of the holding and coupling ear ring hole 2171 in the front-rear direction; the distance between the second clasping piece mounting hole 224 and the axis of the annular track 212 is longer than that between the first clasping piece mounting hole 223 and the axis of the annular track 212;
the guide ring assembly 23 comprises a guide ring 231, three link earrings 232 and three guide posts 233; the guide ring 231 is provided with a guide ring inner cylindrical surface 2311, the guide ring inner cylindrical surface 2311 and the outer cylindrical surface 214 form sliding fit, the three guide columns 233 respectively form sliding fit with the three guide holes 2151, and the guide ring 231 slides along the outer cylindrical surface 214 in the front-rear direction; the three link earrings 232 are respectively and fixedly connected around the guide ring 231, and each link earring 232 is provided with a link earring hole 2321; two ends of the link 24 are respectively provided with a first link hole 241 and a second link hole 242; the three first link holes 241 are respectively matched with the three second clasp mounting holes 224 to form hinges, and the three second link holes 242 are respectively matched with the three link ear ring holes 2321 to form hinges; the compression spring 25 is sleeved on the periphery of the guide post 233, the front end of the compression spring 25 is tightly pressed on the connection plate 215, and the rear end of the compression spring 25 is tightly pressed on the front end of the guide ring 231; the pressure spring 25 pushes the guide ring assembly 23 backwards by means of elastic force, the guide ring assembly 23 pulls the enclasping assembly 22 through the link rod 24, the enclasping assembly 22 has a tendency of swinging around the enclasping connection ear ring hole 2171, and the three enclasping surfaces 2211 jointly enclasping the roller 93 in front of the chamfer at the center of the circular track 212; when the rotating wheel assembly 21 rotates, the weight 225 generates centrifugal force, the clasping assembly 22 tends to swing around the clasping and connecting ear ring hole 2171, the guide ring 231, the clasping assembly 22, the connecting rod 24 and the inner ring sleeve 213 jointly form a crank-slider mechanism, wherein the inner ring sleeve 213 is a guide rod, the guide ring 231 is a slider, the clasping assembly 22 is a prime mover, and the three clasping surfaces 2211 jointly clasp the roller 93 positioned in front of the chamfer at the center of the circular track 212; namely, under the combined action of the elastic force of the pressure spring 25 and the centrifugal force of the weight 225, the three holding surfaces 2211 hold the roller 93 positioned in front of the chamfer at the center of the circular track 212 together; due to the elastic force of the pressure spring 25, even if the rotating wheel assembly 21 is in a stop state, the three holding surfaces 2211 can hold the roller 93 or the roller 9 in front of the chamfer angle together, and the workpiece cannot fall off when the rotating wheel assembly is in a fault stop state; the centrifugal force of the heavy hammer 225 changes along with the rotating speed, so that the holding force can be conveniently adjusted in the working process; the crank-slider mechanism mentioned above refers to the crank-slider mechanism shown in fig. 3-19(a) on page 38 of "light industry mechanical design foundation", published by the chinese light industry press, and edited by the long and huge sources, wherein the scientific terms "guide bar", "slider" and "prime mover" are also from the chapter of the book;
the lower part of the material storehouse 3 is provided with a vertical channel 31, a row of rollers 93 before chamfering arranged in the vertical direction is accommodated in the vertical channel 31, the axial lead of the rollers 93 before chamfering is in the front-back horizontal direction, the material storehouse 3 is positioned behind the rotating component 2, and the axial lead of the roller 93 before the lowest chamfering in the vertical channel 31 is aligned with the axial lead of the annular track 212 in the front-back direction; a front hole 32 is formed in front of the roller 93 before the lowest chamfer in the vertical channel 31, and a tip through hole 33 is formed in the rear of the roller 93 before the lowest chamfer in the vertical channel 31;
the centre assembly 6 comprises a centre cylinder 61 and a push rod 62; the center cylinder 61 is a cylinder with a guide rod; the tip cylinder 61 includes a tip cylinder block 611 and a tip cylinder piston rod 612; the push rod 62 is cylindrical, the axis of the annular track 212 is aligned with the axis of the push rod 62 in the front-back direction, the rear end of the push rod 62 is fixedly connected with the front tail end of the center cylinder piston rod 612, and the center 621 is arranged at the front end of the push rod 62; the centre cylinder piston rod 612 drives the push rod 62 to perform reciprocating translation in the front-rear direction; the centre cylinder piston rod 612 drives the push rod 62 to push forwards, the centre 621 pushes the roller 93 before the lowest chamfer in the vertical channel 31 to translate forwards through the centre through hole 33, and the roller 9 is pushed forwards to translate and replace the three holding surfaces 2211 to hold tightly together through the front hole 32;
a shell flange of the motor 8 is fixedly connected with the rotating support plate 12, and an input hole of the electromagnetic clutch 7 is fixedly connected with an output shaft of the motor 8; the output element of the electromagnetic clutch 7 is a gear, and the output gear of the electromagnetic clutch 7 is meshed with the gear teeth on the large gear ring 211;
the front lathe tool assembly 4 comprises a front cylinder 41 and a front lathe tool 42; the front cylinder 41 is a cylinder with a guide rod; the front cylinder 41 includes a front cylinder block 411 and a front cylinder piston rod 412; the front lathe tool 42 is fixedly connected with the front cylinder piston rod 412; the front cylinder piston rod 412 drives the front turning tool 42 to perform piston movement relative to the front cylinder block 411; the front cylinder piston rod 412 drives the front turning tool 42 to extend out, and the front turning tool 42 turns a front chamfer 91 of the roller 93 before chamfering;
the rear lathe tool assembly 5 comprises a rear cylinder 51 and a rear lathe tool 52; the rear cylinder 51 is a cylinder with a guide bar; the rear cylinder 51 includes a rear cylinder block 511 and a rear cylinder piston rod 512; the rear lathe tool 52 is fixedly connected with a rear cylinder piston rod 512; the rear cylinder piston rod 512 drives the rear turning tool 52 to perform piston movement relative to the rear cylinder body 511; the piston rod 512 of the rear cylinder drives the rear turning tool 52 to extend, and the rear turning tool 52 turns the rear chamfer 92 of the roller 93 before the chamfer.
The working process of this embodiment is as follows.
0) An initial state.
The rollers 93 before chamfering are placed in the material warehouse 3, the rollers 93 before chamfering are all in the front-back horizontal direction, and a part of the rollers 93 before chamfering are arranged in the vertical channel 31 along the vertical direction.
The motor 8 is in an on-idle state.
The electromagnetic clutch 7 is in a disengaged state.
The rotating wheel assembly 21 is in a decelerated rotation state by inertia and friction.
1) When the speed of the rotating wheel assembly 21 is reduced to a lower speed, the centrifugal force of the heavy hammer 225 is reduced, the force of the three holding surfaces 2211 holding the rollers 9 together is smaller, the axial friction force between the three holding surfaces 2211 and the rollers 9 is also smaller, the tip cylinder 61 is started, the tip cylinder piston rod 612 drives the push rod 62 to push forwards, the tip 621 pushes the roller 93 in front of the lowest chamfer in the vertical channel 31 to translate forwards through the tip through hole 33, the roller 9 which is turned to the chamfer and held by the three holding surfaces 2211 together is pushed out and replaced by the front outlet 32 in a translating way, the roller 9 falls into a basket below, and the roller 93 before chamfering is retained in the holding of the three holding surfaces 2211. The weight of the remaining pre-chamfered rollers 93 in the vertical channel 31 presses against the upper side of the pushrod 62.
2) The electromagnetic clutch 7 is closed. The power of the motor 8 drives the rotating wheel assembly 21 to rotate in an accelerated manner through the combination of the electromagnetic clutch 7, the output gear of the electromagnetic clutch 7 and the gear teeth on the large gear ring 211, the centrifugal force generated by the heavy hammer 225 is increased, the centrifugal force of the heavy hammer 225 is increased to increase the force of the three holding surfaces 2211 holding the roller 93 before chamfering, the three holding surfaces 2211 holding the roller 93 before chamfering together under the combined action of the elastic force of the pressure spring 25 and the centrifugal force of the heavy hammer 225, and when the axial friction force generated by the holding force is enough to resist the axial additional thrust generated by the front turning tool 42 or the rear turning tool 52 during chamfering: the front cylinder 41 drives the combination of the front cylinder piston rod 412 and the front turning tool 42 to translate towards the front corner of the roller 93 before chamfering, and the front turning tool 42 turns the front chamfer 91.
The rear cylinder 51 drives the combination of the rear cylinder piston rod 512 and the rear turning tool 52 to translate towards the rear corner of the roller 93 before chamfering, and the rear turning tool 52 turns the rear chamfer 92.
The roller 93 before chamfering is converted into the roller 9.
3) The electromagnetic clutch 7 is disengaged. The motor 8 is in an on-idle state.
The front cylinder 41 is activated in reverse driving the combination of the front cylinder piston rod 412 and the front lathe tool 42 away from the rollers 9.
The rear cylinder 51 is actuated in reverse to drive the combination of the rear cylinder piston rod 512 and the rear lathe tool 52 away from the rollers 9.
When the rotating wheel assembly 21 is in the deceleration rotation state due to inertia, the three holding surfaces 2211 hold the roller 9 together with less force under the combined action of the elastic force of the compression spring 25 and the centrifugal force of the weight 225.
The centre cylinder 61 is reversely started, the centre cylinder piston rod 612 drives the push rod 62 to retract backwards, the centre 621 retracts to the centre through hole 33 all the time, the roller 93 in front of the chamfer in the material warehouse 3 falls under the action of gravity, the roller 93 in front of the lowest chamfer falls to the bottom, the front of the roller 93 in front of the lowest chamfer faces the front hole 32, and the rear of the roller faces the centre through hole 33.
The steps 1) to 3) are repeated continuously, so that the roller 93 before chamfering in the material warehouse 3 is turned into the roller 9 continuously and falls into the material basket below, and the purposes of automatically loading and unloading workpieces and efficiently and automatically turning the roller chamfer without completely stopping the rotating wheel assembly are achieved.
The rotational speed of the rotating wheel assembly 21 can be measured by the tachometer 123 and transmitted to the electronic control system in the form of an electrical signal, which the system can determine the next action.
The beneficial effects of this embodiment: the rotating wheel assembly can load and unload workpieces without stopping completely, chamfers at two ends can be turned by one-time clamping, the automation degree is high, and the working efficiency is high.
Claims (1)
1. A roller automatic chamfering device for an overrunning clutch of medical machinery is characterized by comprising a rack, a rotating assembly, a material warehouse, a front turning tool assembly, a rear turning tool assembly, a tip assembly, an electromagnetic clutch and a motor;
the rotating assembly comprises a rotating wheel assembly, three enclasping assemblies, a guide ring assembly, three link rods and three pressure springs;
the rotating wheel assembly comprises an outer ring, an inner ring sleeve, a connecting plate and three clasping connecting earrings; the outer ring is circular and comprises a large gear ring and an annular track, gear teeth are arranged on the large gear ring, and the axis of a reference circle of the large gear ring is superposed with the axis of the annular track; the outer ring and the inner ring sleeve are fixedly connected together through a connecting plate; each connecting plate is provided with a guide hole; the inner ring sleeve is in a sleeve shape, an outer cylindrical surface is arranged on the inner ring sleeve, and the axial lead of the outer cylindrical surface is superposed with the axial lead of the annular track; the three clasping connecting earrings are fixedly connected on the inner ring sleeve, each clasping connecting earring is provided with a clasping connecting earring hole, and the three clasping connecting earring holes are uniformly distributed in an array manner around the axial lead of the inner ring sleeve; the rack is provided with a rotating support plate, the rotating support plate is provided with three support rollers, the axis lines of the support rollers are arranged in the front-back horizontal direction, the support rollers are connected with the rotating support plate through revolute pairs, the outer cylindrical surface of each support roller is tangent to the outer cylindrical surface of the annular track, and the three support rollers are uniformly distributed around the annular track;
the clasping component comprises three parts, namely a clasping claw, a swinging arm and a heavy hammer; a first clasping piece mounting hole is formed in the connecting part of the rear end of the clasping claw and one end of the swinging arm; a second clasping piece mounting hole is formed in the part where one end of the swinging arm is connected with the heavy hammer; the first clasping piece mounting hole is matched with the clasping connecting earring hole to form a hinge; the clamping claw is provided with a clamping surface, the clamping surface faces to the axial lead direction of the rotating wheel assembly, the heavy hammer is closer to the front than the clamping connection earring hole in the front-back direction, and the clamping surface is closer to the back than the clamping connection earring hole in the front-back direction; the distance between the second holding piece mounting hole and the axis of the annular track is longer than that between the first holding piece mounting hole and the axis of the annular track;
the guide ring assembly comprises a guide ring, three link rod earrings and three guide columns; the guide ring is provided with an inner cylindrical surface of the guide ring, the inner cylindrical surface of the guide ring and an outer cylindrical surface of the inner ring sleeve form sliding fit, the three guide columns respectively form sliding fit with the three guide hole groups, and the guide ring slides in the front-rear direction along the outer cylindrical surface; the three link rod earrings are respectively and fixedly connected around the guide ring, and each link rod earring is provided with a link rod earring hole; two ends of the link rod are respectively provided with a first link rod hole and a second link rod hole; the three link rod holes I are respectively matched with the three clasping member mounting holes II to form three hinges, and the three link rod holes II are respectively matched with the three link rod ear-ring holes to form three hinges; the compression spring is sleeved on the periphery of the guide post, the front end of the compression spring is tightly pressed on the connecting plate, and the rear end of the compression spring is tightly pressed on the front end of the guide ring; the pressure spring pushes the guide ring assembly backwards by means of elastic force, the guide ring assembly pulls the enclasping assembly through the link rod, the enclasping assembly has a tendency of swinging around an enclasping connection lug ring hole, and the three enclasping surfaces jointly enclasping a roller in front of a chamfer at the center of the circular track; when the rotating wheel assembly rotates, a heavy hammer generates centrifugal force, the enclasping assembly has the tendency of swinging around an enclasping connection earring hole, the guide ring, the enclasping assembly, the link rod and the inner ring sleeve jointly form a crank slider mechanism, wherein the inner ring sleeve is a guide rod, the guide ring is a slider, the enclasping assembly is a prime mover, and three enclasping surfaces jointly enclasping a roller positioned in front of a chamfer at the center of the annular track;
the lower part of the material storehouse is provided with a vertical channel, a row of rollers before chamfering arranged in the vertical direction are accommodated in the vertical channel, the axial lead of the rollers before chamfering is in the front-back horizontal direction, the material storehouse is positioned behind the rotating assembly, and the axial lead of the roller before chamfering at the lowest part in the vertical channel is superposed with the axial lead of the annular track; a front outlet hole is formed in the vertical channel in front of the roller before the lowest chamfer, and a tip through hole is formed in the vertical channel behind the roller before the lowest chamfer;
the centre assembly comprises a centre cylinder and a push rod; the top cylinder is a cylinder with a guide rod; the centre cylinder comprises a centre cylinder body and a centre cylinder piston rod; the push rod is cylindrical, the axis of the annular track is aligned with the axis of the push rod in the front-back direction, the rear end of the push rod is fixedly connected with the front tail end of a centre cylinder piston rod, and the front end of the push rod is provided with a centre; a piston rod of a centre cylinder drives a push rod to push forwards, a centre pushes a roller in front of the lowest chamfer in the vertical channel to translate forwards through a centre through hole, and the roller is pushed out forwards in a translation mode through a front outlet hole and replaces the roller held by the three holding surfaces together;
the flange of the shell of the motor is fixedly connected with the rotary support plate, and the input hole of the electromagnetic clutch is fixedly connected with the output shaft of the motor; the output element of the electromagnetic clutch is a gear, and the output gear of the electromagnetic clutch is meshed with the gear teeth on the large gear ring;
the front lathe tool component comprises a front cylinder and a front lathe tool; the front cylinder is a cylinder with a guide rod; the front cylinder comprises a front cylinder body and a front cylinder piston rod; the front lathe tool is fixedly connected with a front cylinder piston rod; a front cylinder piston rod drives a front turning tool to extend out, and the front turning tool turns a front chamfer of the roller before the chamfer;
the rear lathe tool component comprises a rear cylinder and a rear lathe tool; the rear cylinder is a cylinder with a guide rod; the rear cylinder comprises a rear cylinder body and a rear cylinder piston rod; the rear turning tool is fixedly connected with a piston rod of the rear cylinder; and the piston rod of the rear cylinder drives the rear turning tool to extend out, and the rear turning tool turns the rear chamfer of the roller before the chamfer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652254.4A CN110315094B (en) | 2019-07-19 | 2019-07-19 | Automatic chamfering equipment for roller of overrunning clutch of medical machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910652254.4A CN110315094B (en) | 2019-07-19 | 2019-07-19 | Automatic chamfering equipment for roller of overrunning clutch of medical machine |
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| CN110315094A CN110315094A (en) | 2019-10-11 |
| CN110315094B true CN110315094B (en) | 2020-10-16 |
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| CN110744133B (en) * | 2019-11-08 | 2020-11-17 | 谢桂林 | Automatic chamfering equipment for construction aluminum template sealing plate |
| CN111071807A (en) * | 2020-03-06 | 2020-04-28 | 杜宗英 | Automatic intelligent welding workstation that makes up of mine belt feeder bearing roller bearing frame |
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| CN201076926Y (en) * | 2007-09-14 | 2008-06-25 | 中冶京唐建设有限公司 | Pipe chamfering auxiliary centering fixture for turning mill |
| FR2958195A1 (en) * | 2010-04-02 | 2011-10-07 | Axxair | Orbital machining apparatus for machining e.g. cutting, tubular unit i.e. tube, has fixed support, locking plate and support arrangement that are formed of stacked sheets cut with laser while having realizing units to realize functions |
| EP2455174A1 (en) * | 2010-11-22 | 2012-05-23 | Saint-Gobain PAM | Device for cutting and/or bevelling a tubular element and corresponding use |
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