CN113369519A - Flexible gear inner hole opening device and clamping method thereof - Google Patents
Flexible gear inner hole opening device and clamping method thereof Download PDFInfo
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- CN113369519A CN113369519A CN202110795788.XA CN202110795788A CN113369519A CN 113369519 A CN113369519 A CN 113369519A CN 202110795788 A CN202110795788 A CN 202110795788A CN 113369519 A CN113369519 A CN 113369519A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000007480 spreading Effects 0.000 claims description 8
- 238000003892 spreading Methods 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 17
- 238000012545 processing Methods 0.000 abstract description 13
- 238000001125 extrusion Methods 0.000 abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 description 11
- 238000001514 detection method Methods 0.000 description 11
- 230000005540 biological transmission Effects 0.000 description 7
- 230000000694 effects Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- 230000008093 supporting effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/40—Expansion mandrels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a flexible gear inner hole opening device and a clamping method thereof, and particularly relates to the technical field of flexible gear processing assistance of a harmonic reducer. A flexible gear inner hole opening device and a clamping method thereof are provided, wherein a screw rod assembly comprises a screw rod and a screw rod nut arranged on the screw rod; the tensioning assembly comprises a step mandrel with at least two step shafts with different diameters and a tensioning sleeve assembly sleeved outside the step mandrel; the tensioning sleeve assembly comprises an expansion sleeve and an elastic ring, wherein the expansion sleeve consists of a pair of semicircular expansion sleeves separated from each other; the step core shaft is sleeved on the screw rod nut, and the semicircular expansion sleeve is sleeved on the step shaft of the step core shaft through an elastic ring; the positioning assembly is arranged at one end, close to the step mandrel, of the screw rod. The invention has simple structure and simple and convenient operation, can match flexible gears with different tolerances, can realize replacement and reuse, and simultaneously does not need too large extrusion force to deform the expansion sleeve in the process of adjusting the size of the expansion sleeve so that the expansion sleeve is in good contact with an inner hole of the flexible gear.
Description
Technical Field
The invention relates to the technical field of flexible gear machining assistance of harmonic reducers, in particular to a flexible gear inner hole opening device and a clamping method thereof.
Background
In the process of mechanical part processing detection, the benchmark is required to be set, so that the detection result of the mechanical part is more accurate, and meanwhile, when the mechanical part is lighter and thinner, deformation is easy to occur, and in order to guarantee the accuracy of detection, an auxiliary detection device is required to be added, so that the mechanical part can be ensured to be in a normal state.
The harmonic reducer is mainly a mechanical driver which transmits power and movement by generating elastic mechanical waves through flexible parts. The harmonic drive includes three basic components: wave generator, flexible wheel and rigid wheel. The three components are fixed one at will, one of the other two components is a driving component, the other two components are driven components, speed reduction or speed increase (fixed transmission ratio) can be realized, and the speed reduction or speed increase can also be converted into two inputs and one output to form differential transmission. The harmonic transmission has the advantages of large transmission ratio, wide range, high precision, small backlash, large bearing capacity, small volume, light weight, high transmission efficiency, stable transmission, low noise, capability of transmitting motion to a closed space and the like, and is more and more widely applied in recent years.
The flexible gear of the harmonic reducer is a core part in the harmonic reducer, and the transmission precision and the service life of the harmonic reducer are directly influenced by the machining precision. Because of its special structure, be the thin wall form after the processing, oval under the free state, so must fix a position with the dabber when processing and detecting it, with the hole rounding, but there is the tolerance in its hole size, so the dabber must be adjustable size, the dabber that uses at present mostly relies on hydraulic pressure or magnetism as power, do a set of complicated frock with the lathe, it is available to process on the lathe, but the processing completion needs to rely on other equipment such as gear measuring apparatu to examine time measuring, this type dabber loses the holding power, become unadjustable dabber, can't satisfy the detection demand of many sizes flexbile gear hole, cause the testing result inaccurate, increased the degree of difficulty for the research and development of new product.
Disclosure of Invention
The invention aims to provide a flexible gear inner hole expanding device and a clamping method thereof, and aims to solve the problems that an existing step mandrel cannot be used for multiple times and can realize multi-size adjustment, and an expansion sleeve in contact with a flexible gear is deformed due to too large extrusion force.
The technical scheme for solving the technical problems is as follows:
a flexspline bore distractor device comprising: the screw rod assembly, the tensioning assembly and the positioning assembly are arranged on the base; the screw rod assembly comprises a screw rod and a screw rod nut arranged on the screw rod; the tensioning assembly comprises a step mandrel with at least two steps with different diameters and a tensioning sleeve assembly sleeved on the step mandrel; the step core shaft is sleeved on the screw rod nut and connected with the screw rod nut; the tensioning sleeve assembly comprises an annular expansion sleeve consisting of a pair of mutually separated semicircular expansion sleeves and an elastic ring which is arranged on the outer circular surface of the expansion sleeve and used for connecting the two semicircular expansion sleeves; the expansion sleeve is sleeved on one step of the step mandrel; and two ends of the screw rod are respectively provided with a positioning component.
The beneficial effects of adopting the above technical scheme are: the step mandrel is connected with the lead screw nut, the lead screw nut is arranged on the lead screw, the step mandrel can slide up and down along the lead screw along with the lead screw nut sliding on the lead screw, the position of the step mandrel on the lead screw is adjusted, the diameter of the step mandrel is convenient to match with flexible gears with different inner hole diameters, and the adjustment effect on the flexible gears with different sizes is achieved. The pair of mutually separated semicircular expansion sleeves are sleeved outside the step mandrel, so that the semicircular expansion sleeves are in contact fit with the flexible gear, and the flexible gear is prevented from being in direct contact with the step mandrel to cause certain damage to the step mandrel and further influence the precision of the step mandrel; on the other hand, the elastic ring connects a pair of semicircular expansion sleeves separated from each other together and is sleeved on the step mandrel, and the size of the expansion sleeve formed by the pair of semicircular expansion sleeves separated from each other can be adjusted and changed according to step shafts with different diameters of the step mandrel so as to adapt to the size of the inner hole of the flexible gear. The pair of mutually separated semicircular expansion sleeves are connected together through the elastic ring, and the expansion sleeve is formed, so that the phenomenon of excessive deformation of the expansion sleeve can not occur in the process of adjusting the size of the expansion sleeve, meanwhile, the purpose of adjusting the size of the expansion sleeve can be realized without too large extrusion force in the adjusting process, and the expansion sleeve can be used for multiple times.
Further, the expansion sleeve is sleeved on the step with the smallest diameter of the step mandrel.
The beneficial effects of adopting the above technical scheme are: the expansion sleeve is sleeved on the step with the smallest diameter of the step mandrel, so that the expansion sleeve can be sleeved on other steps on the step mandrel, and the tensioning supporting effect of the expansion sleeve is met.
Furthermore, one end of the screw nut is provided with a flange, and the flange is connected with the small end face of the step mandrel through a bolt.
The beneficial effects of adopting the above technical scheme are: one end of the screw rod nut is provided with a flange, so that the step mandrel sleeved on the screw rod nut is fixedly connected with the screw rod nut. When the position of the step mandrel is adjusted, the step mandrel is rotated, so that the lead screw nut drives the step mandrel to slide on the lead screw. The flange is connected with the small end face of the step mandrel, so that the structure of the flexible gear inner hole opening device is compact and attractive under the condition that the processing and detection conditions of the flexible gear inner hole are not influenced; on the other hand, when the position of the step mandrel on the screw rod is changed, the positioning assembly mounted on the screw rod can fasten the step mandrel again. Meanwhile, the flange on the screw rod nut is connected with the small end face of the step mandrel, so that the flexible gear can be conveniently extended into the outer circumference of the step mandrel in the process of detecting the inner hole of the flexible gear, and the problem that the flexible gear cannot be sleeved outside the step mandrel due to blocking of the fixing assembly is avoided.
Furthermore, the outer circumferential surface of the semicircular expansion sleeve is provided with a groove, so that the outer circumferential surface of the expansion sleeve is provided with an annular groove, and the elastic ring is arranged inside the annular groove.
The beneficial effects of adopting the above technical scheme are: the outer circumferential surface of the semicircular expansion sleeve is provided with the groove, the elastic ring is placed in the groove, so that the contact surface of the expansion sleeve formed by the pair of mutually separated semicircular expansion sleeves and the flexible gear is smooth and has no protrusion, and the damage to the surface of the inner hole of the flexible gear and the influence on the precision of the flexible gear are avoided.
Furthermore, the semicircular expansion sleeve is made of polytetrafluoroethylene material; the elastic ring is a spring connected end to end.
The beneficial effects of adopting the above technical scheme are: the semi-circular expansion sleeve is made of polytetrafluoroethylene, so that the contact part of the expansion sleeve formed by the pair of mutually separated semi-circular expansion sleeves and the flexible gear inner hole has extremely small friction force effect, and the friction between the expansion sleeve and the flexible gear inner hole is avoided, and the surface of the flexible gear inner hole is prevented from being damaged. The elastic ring is arranged into a spring which is connected end to end, so that the expansion sleeve formed by the pair of mutually separated semicircular expansion sleeves has certain reset and compression functions and higher fatigue resistance, and the phenomenon of insufficient elasticity in the process of long-term use is avoided.
Furthermore, two ends of the screw rod are respectively provided with a tip.
The beneficial effects of adopting the above technical scheme are: through the centers arranged at the two ends of the screw rod, the spreading device can be arranged on a lathe to perform small-batch flexible gear manufacturing; meanwhile, the distraction device is fixed, so that the flexible gear fixed on the distraction device can be conveniently detected.
Further, the diameter difference of two adjacent steps on the step mandrel is 0.01 mm.
The beneficial effects of adopting the above technical scheme are: the diameters of two adjacent steps are set to have a difference of 0.01mm, so that the step mandrel can be matched with the inner holes of the flexible gears with different tolerances, and meanwhile, the flexible gears can be ensured to have enough precision.
Further, the positioning assembly is arranged on the end face of the large end of the stepped mandrel and comprises a nut and a gasket.
The beneficial effects of adopting the above technical scheme are: the positioning assembly is arranged on the end face, close to the large end of the step mandrel, of the screw rod, so that the step mandrel and the screw rod are fixed in a nut mode; meanwhile, when the position of the step mandrel is adjusted, the step mandrel can be fastened again.
A flexible gear clamping method based on the flexible gear inner hole opening device comprises the following steps:
s1, sleeving the expansion sleeves on the step with the largest diameter of the step mandrel, wherein a gap is formed between the two semicircular expansion sleeves, and one positioning assembly is arranged at one end, close to the large end of the step mandrel, of the screw rod, so that the screw rod nut is fixed on the screw rod;
s2, sleeving the flexible gear on the screw rod from one end, close to the small end of the step mandrel, of the screw rod, and enabling the small end of the step mandrel to extend into the flexible gear from the open end of the flexible gear; installing another positioning assembly on the screw rod and contacting with the opening end of the flexible gear;
s3, enabling the large end of the step mandrel to face upwards;
s4, loosening the positioning assembly close to the large end of the step mandrel;
s5, screwing the step mandrel to enable the expansion sleeve to be close to the open end of the flexible gear, and judging whether the open end of the flexible gear can be sleeved on the expansion sleeve or not; if the step mandrel can be sleeved on the expansion sleeve, screwing the positioning assembly close to the large end of the step mandrel, and if the step mandrel cannot be sleeved on the expansion sleeve, performing the next step;
s6, screwing the step mandrel to enable the step mandrel to move downwards, shifting the expansion sleeve to the next step, and repeating the step S5 until the open end of the flexible wheel can be sleeved on the expansion sleeve.
The beneficial effects of adopting the above technical scheme are: the lead screw is matched with the lead screw nut, the step mandrel is fixed on the lead screw nut, and when the step mandrel is rotated, the step mandrel is driven by the lead screw nut to slide on the lead screw, so that the adjusting process is smooth and convenient; the size of an expansion sleeve consisting of a pair of semicircular expansion sleeves is adjusted to match stepped mandrels with different diameters and stepped shafts. The adjustment process of the inner hole of the flexible gear adopts a semi-automatic mode, and can be accurately adjusted according to the actual tolerance of the inner hole of the flexible gear, so that the expansion sleeve consisting of a pair of semi-circular expansion sleeves is well matched with the inner hole of the flexible gear. After the inner hole of the flexible gear is adjusted, the adjusting device is clamped on a machine tool, and gear manufacturing processing or precision detection is carried out on the flexible gear. Through the locating component who sets up near the outside one end of flexbile gear, make the flexbile gear body can fix on lead screw and bloated cover, avoid processing the flexbile gear body and the in-process that detects, appear the flexbile gear body and sheathe phenomenon of landing from expanding.
Further, when judging whether the open end of the flexible gear can be sleeved on the expansion sleeve or not, the shape of the open end of the flexible gear is manually adjusted.
The beneficial effects of adopting the above technical scheme are: the flexible gear can be smoothly sleeved on the expansion sleeve by manually adjusting the shape of the open end of the flexible gear.
The invention has the following beneficial effects:
1. the adjusting device has a simple structure, is easy and convenient to operate, can be matched with flexible gears with different tolerances, can realize replacement and reuse, and simultaneously does not need too large extrusion force to deform the expansion sleeve in the process of adjusting the size of the expansion sleeve so that the expansion sleeve is in good contact with an inner hole of the flexible gear.
2. The step core shaft with the step shafts with different diameters enables the step core shaft to be matched with flexible gear sizes with different tolerances, and after the inner hole of the flexible gear is adjusted, a certain supporting force is provided in the flexible gear machining process.
3. A pair of semicircular expansion sleeves separated from each other are connected together through an elastic ring and sleeved on a step mandrel, and different sizes of the semicircular expansion sleeves can be adjusted according to the sizes of different step shafts on the step mandrel so as to match flexible gear inner holes with different tolerances; the expansion sleeve is arranged into a pair of semicircular expansion sleeves separated from each other, so that the adjustment process is more convenient and simpler, and the adjustment of the size of the expansion sleeve can be realized without too large extrusion force.
4. According to the invention, the positioning assemblies are respectively arranged at one end of the screw rod close to the flexible gear body and one end close to the large end of the step core shaft, so that the flexible gear body can be stably arranged outside the step core shaft, and the phenomenon that the flexible gear slides out of the step core shaft in the process of processing or detecting the flexible gear is avoided.
Drawings
FIG. 1 is a schematic structural view of a device for spreading an inner hole of a flexspline according to the present invention;
FIG. 2 is a schematic view of a stepped mandrel configuration of the present invention;
FIG. 3 is a schematic view of the expansion sleeve structure of the present invention;
FIG. 4 is a schematic structural view of a lead screw assembly of the present invention;
fig. 5 is a schematic structural view of the flexible gear clamping method of the present invention.
In the figure: 1-a screw assembly; 2-a tensioning assembly; 3-a positioning assembly; 4-a flexible gear; 11-a screw rod; 12-a lead screw nut; 13-positioning a counter sink; 21-step mandrel; 22-a tensioning sleeve component; 23-expanding the sleeve; 24-an elastic ring; 25-semicircular expansion sleeves; 121-a flange; 251-groove.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Examples
Referring to fig. 1, a spreader for an inner hole of a flexspline comprises a screw rod assembly 1, a tensioning assembly 2 and a positioning assembly 3; the tensioning assembly 2 is sleeved outside the screw rod assembly 1, the tensioning assembly 2 is fixed on the screw rod assembly 1 through the positioning assembly 3, the tensioning assembly 2 can slide up and down along with the screw rod assembly 1 to match flexible wheel inner holes with different tolerances, the flexible wheel inner holes are fixedly sleeved on the tensioning assembly 2, and further processing or detection operation on the flexible wheel is facilitated.
Referring to fig. 1 to 3, the stepped mandrel 21 has 5 stepped shafts with different diameters, the 5 stepped shafts with different diameters are sequentially arranged from a small end to a large end, and the diameters of two adjacent stepped shafts are different by 0.01 mm. The diameters of the step shafts of the step core shaft 21 are different by 0.01mm, so that the step core shaft 21 can be matched with flexible gear inner holes with different tolerances, and the flexible gear inner holes with different size tolerances are adjusted. The expansion sleeve 23 is composed of a pair of mutually separated semicircular expansion sleeves 25, the mutually separated semicircular expansion sleeves 25 are sleeved on step shafts with different sizes on the step mandrel 21 through elastic rings 24, so that the semicircular expansion sleeves 25 are in contact fit with inner holes of the flexible gears, direct contact between the inner holes of the flexible gears and the step mandrel 21 is avoided, certain damage and damage to the step mandrel 21 are avoided, and further the precision of the step mandrel 21 is influenced. The size of the expansion sleeve 23 is adjusted to match different tolerance of the inner hole of the flexible gear, the expansion sleeve 23 is sleeved on different step shafts of the step mandrel 21, and the expansion sleeve 23 can support the flexible gear after changing the size, so that subsequent further processing or detection operation is facilitated. The expansion sleeve 23 is arranged into a pair of semicircular expansion sleeves 25 which are separated from each other, so that the process of adjusting the size of the expansion sleeve 23 is simpler, more convenient and faster, and the phenomenon of excessive deformation in the process of tensioning the expansion sleeve 23 is avoided, so that the expansion sleeve 23 cannot recover the original state; and the expansion sleeve 23 is deformed to require larger extrusion force, the actual size of the extrusion force is difficult to control in the adjusting process, and the phenomenon of damaging the flexible gear is easy to occur.
A groove 251 is provided on the outer circumferential surface of the semicircular expander 25, and the width of the notch of the groove 251 is less than or equal to the width of the semicircular expander 25. The groove 251 is formed in the outer circumferential surface of the semicircular expansion sleeve 25, and the elastic ring 24 is placed in the groove 251, so that the outer circumferential surface of the semicircular expansion sleeve 25 is as smooth as possible without protrusions, and the surface of an inner hole of the flexible gear is prevented from being damaged, and the precision of the flexible gear is prevented from being influenced.
The semicircular expansion sleeve 25 is made of polytetrafluoroethylene, so that the contact part of the expansion sleeve 23 formed by the pair of mutually separated semicircular expansion sleeves 25 and the flexible gear inner hole has extremely small friction force effect, and the damage to the surface of the flexible gear inner hole caused by the friction between the expansion sleeve 23 and the flexible gear inner hole is avoided, thereby further influencing the precision of the flexible gear inner hole. The elastic ring 24 is set into a spring which is connected end to end, so that the expansion sleeve 23 formed by the pair of mutually separated semicircular expansion sleeves 25 has certain reset and compression functions and higher fatigue resistance, and the phenomenon of insufficient elasticity of the expansion sleeve 23 in the long-term use process is avoided.
Referring to fig. 1 and 4, the lead screw assembly 1 includes a lead screw 11 and a lead screw nut 12 mounted on the lead screw 11, the tensioning assembly 2 is sleeved on an outer circumferential surface of the lead screw nut 12, and the tensioning assembly 2 is fixedly connected with the lead screw nut 12 through a bolt. When the tensioning assembly 2 is adjusted, the tensioning assembly 2 is driven by the screw rod nut 12 to slide up and down along the screw rod 11, so that the purpose of the size of the inner hole of the step flexible gear is achieved.
One end of the feed screw nut 12 is provided with a flange 121, and the flange 121 is fixed with a small end of the step mandrel 21 by a bolt. The flange 121 is arranged at one end of the feed screw nut 12, so that the connection between the step mandrel 21 and the feed screw nut 12 is firmer and more stable; meanwhile, in the process of rotating the step mandrel 21, the lead screw nut 12 can stably and accurately drive the step mandrel 21 to slide up and down along the lead screw 11.
And a positioning component 3 is arranged at one end of the lead screw 11 close to the large end of the step mandrel 21, and the positioning component 3 comprises a nut and a gasket. The positioning assembly 3 is arranged at the large end of the step mandrel 21, so that the step mandrel 21 is fixed on the screw rod 11, and the step mandrel 21 is prevented from sliding up and down along the screw rod 11 under the action of the screw rod nut 12.
Two ends of the screw rod 11 are respectively provided with a positioning counter bore 13, and the positioning counter bores 13 are arranged along the axial direction of the screw rod 11. The positioning counter bores 13 are arranged at the two ends of the screw rod 11 along the axis of the screw rod 11, so that when the screw rod 11 is installed on a machine tool, good coaxiality is ensured, and detection and processing operation of a flexible gear are facilitated.
The flexible gear 4 comprises an open end and an open end, the open end is sleeved on the expansion sleeve 23, the open end is sleeved on the screw rod 11, and the open end is provided with the positioning component 3.
Referring to fig. 1 to 5, a method for clamping a flexible gear based on the spreader of the inner hole of the flexible gear includes the following steps:
s1, sleeving the expansion sleeve 23 on the step with the largest diameter of the step mandrel 21, wherein a gap is formed between the two semicircular expansion sleeves 25, and one positioning assembly 3 is arranged at one end, close to the large end of the step mandrel 21, of the lead screw 11, so that the lead screw nut 12 is fixed on the lead screw 11;
s2, sleeving the flexible gear on the screw rod 11 from one end of the screw rod 11 close to the small end of the step mandrel 21, and enabling the small end of the step mandrel 21 to extend into the flexible gear 4 from the open end of the flexible gear 4; another positioning component 3 is arranged on the screw rod 11 and is contacted with the opening end of the flexible gear;
s3, the large end of the step mandrel 21 is upward;
s4, loosening the positioning component 3 close to the large end of the step mandrel 21;
s5, screwing the step mandrel 21 to enable the expansion sleeve 23 to be close to the open end of the flexible gear 4, adjusting the shape of the open end of the flexible gear 4 by hand, and judging whether the open end of the flexible gear 4 can be sleeved on the expansion sleeve 23 or not; if the sleeve can be sleeved on the expansion sleeve 23, the positioning component 3 close to the large end of the step mandrel 21 is screwed, and if the sleeve cannot be sleeved on the expansion sleeve 23, the next step is carried out;
s6, screwing the step mandrel 21 to enable the step mandrel 21 to move downwards, shifting the expansion sleeve 23 to the next step, and repeating the step S5 until the open end of the flexible wheel 4 can be sleeved on the expansion sleeve 23.
When strutting the flexbile gear hole size, adopt semi-automatic formula regulation mode, can adjust step dabber and the expanding sleeve on the step dabber according to the tolerance of actual flexbile gear hole, enlarge its application scope, satisfy the processing or the detection operation's of many sizes flexbile gear hole needs.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A device for spreading an inner hole of a flexible gear is characterized by comprising: the device comprises a screw rod assembly (1), a tensioning assembly (2) and a positioning assembly (3);
the screw rod assembly (1) comprises a screw rod (11) and a screw rod nut (12) arranged on the screw rod (11);
the tensioning assembly (2) comprises a step mandrel (21) with at least two steps with different diameters and a tensioning sleeve assembly (22) sleeved on the step mandrel (21);
the step mandrel (21) is sleeved on the screw rod nut (12) and is connected with the screw rod nut (12);
the tensioning sleeve assembly (22) comprises an annular expansion sleeve (23) consisting of a pair of mutually separated semicircular expansion sleeves (25) and an elastic ring (24) which is arranged on the outer circular surface of the expansion sleeve (23) and is used for connecting the two semicircular expansion sleeves (25); the expansion sleeve (23) is sleeved on one step of the step mandrel (21); and the two ends of the screw rod (11) are respectively provided with the positioning components (3).
2. The flexspline inner bore opening device according to claim 1, wherein the expansion sleeve (23) is fitted over the step of the smallest diameter of the step mandrel (21).
3. The flexspline inner bore spreading device according to claim 1, characterized in that one end of the lead screw nut (12) is provided with a flange (121), and the flange (121) is connected with the small end face of the step mandrel (21) through a bolt.
4. The flexspline inner bore spreading device according to claim 1, wherein the semi-circular expansion sleeve (25) is provided with a groove (251) on its outer circumferential surface such that the expansion sleeve (23) has an annular groove on its outer circumferential surface, the elastic ring (24) being disposed inside the annular groove.
5. The flexspline inner bore opening device according to claim 4, wherein the semicircular expansion sleeve (23) is made of polytetrafluoroethylene material; the elastic ring (24) is a spring connected end to end.
6. The flexspline inner hole opening device according to claim 1, wherein the two ends of the lead screw (11) are respectively provided with a tip (13).
7. The flexspline bore spreading device according to claim 1, wherein the diameters of two adjacent steps on the step mandrel (21) differ by 0.01 mm.
8. The flexspline bore spreading device according to any one of claims 1 to 7, wherein the positioning assembly (3) comprises a nut and a washer.
9. A method for clamping a flexible gear based on the device for spreading an inner hole of the flexible gear according to any one of claims 1 to 8, which comprises the following steps:
s1, sleeving the expansion sleeve (23) on the step with the largest diameter of the step mandrel (21), wherein a gap is reserved between the two semicircular expansion sleeves (25), and one positioning assembly (3) is arranged at one end, close to the large end of the step mandrel (21), of the screw rod (11), so that the screw rod nut is fixed on the screw rod (11);
s2, sleeving the flexible gear (4) on the screw rod (11) from one end, close to the small end of the step mandrel (21), of the screw rod (11), and enabling the small end of the step mandrel (21) to extend into the flexible gear (4) from the open end of the flexible gear (4); another positioning component (3) is arranged on the lead screw (11) and is contacted with the open pore end of the flexible gear (4);
s3, the large end of the step mandrel (21) is upward;
s4, loosening the positioning assembly (3) close to the large end of the step mandrel (21);
s5: screwing the step mandrel (21) to enable the expansion sleeve (23) to be close to the open end of the flexible gear (4), and judging whether the open end of the flexible gear (4) can be sleeved on the expansion sleeve (23) or not; if the sleeve can be sleeved on the expansion sleeve (23), the positioning component (3) close to the large end of the step mandrel (21) is screwed; if the sleeve cannot be sleeved on the expansion sleeve (23), the next step is carried out;
s6: screwing the step mandrel (21) to enable the step mandrel (21) to move downwards, shifting the expansion sleeve (23) to the next step, and repeating the step S5 until the open end of the flexible wheel (4) can be sleeved on the expansion sleeve (23).
10. The flexible gear clamping method according to claim 9, wherein the shape of the open end of the flexible gear (4) is manually adjusted when judging whether the open end of the flexible gear (4) can be sleeved on the expansion sleeve (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110795788.XA CN113369519A (en) | 2021-07-14 | 2021-07-14 | Flexible gear inner hole opening device and clamping method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110795788.XA CN113369519A (en) | 2021-07-14 | 2021-07-14 | Flexible gear inner hole opening device and clamping method thereof |
Publications (1)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749971A (en) * | 2022-04-28 | 2022-07-15 | 陕西渭河工模具有限公司 | Thin-wall part excircle machining method and tool |
| CN114851072A (en) * | 2022-07-05 | 2022-08-05 | 苏州信能精密机械有限公司 | Thin-wall cup-shaped fixture for flexible gear honing and honing machine tool |
| WO2024197553A1 (en) * | 2023-03-27 | 2024-10-03 | 江苏科技大学 | Parameterized harmonic reducer flexspline expansion sleeve clamp |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050158135A1 (en) * | 2004-01-21 | 2005-07-21 | Massa Ted R. | Tool holder |
| KR20090123789A (en) * | 2008-05-28 | 2009-12-02 | 가부시키가이샤 하모닉 드라이브 시스템즈 | Wave-gear-type linear-actuation mechanism |
| CN203738466U (en) * | 2014-03-05 | 2014-07-30 | 泰州市天鑫机械有限公司 | Novel clamp for producing eccentric bushing parts |
| CN203765018U (en) * | 2013-11-18 | 2014-08-13 | 重庆清平机械厂 | Flexible gear positioning tool |
| CN205270921U (en) * | 2015-12-26 | 2016-06-01 | 北京众合天成精密机械制造有限公司 | Bloated axle of processing flexbile gear |
| CN205342108U (en) * | 2015-10-21 | 2016-06-29 | 重庆市江津区禾丰机械有限公司 | Adopt bloated cover device of gear of four symmetrical magnetic paths design |
| CN205464417U (en) * | 2016-04-01 | 2016-08-17 | 韩向阳 | A long section of thick bamboo type part clamping anchor clamps |
| CN107824822A (en) * | 2017-12-24 | 2018-03-23 | 中国航发贵州红林航空动力控制科技有限公司 | A kind of thin-wall rotation-type part cylindrical turning clamping method and device |
| CN208116920U (en) * | 2018-03-26 | 2018-11-20 | 郑州高端装备与信息产业技术研究院有限公司 | Harmonic reducer flexible wheel teeth portion processing equipment expanding arbor |
| CN215033743U (en) * | 2021-07-14 | 2021-12-07 | 陕西渭河精密传动有限公司 | Opening device for inner hole of flexible gear |
-
2021
- 2021-07-14 CN CN202110795788.XA patent/CN113369519A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20050158135A1 (en) * | 2004-01-21 | 2005-07-21 | Massa Ted R. | Tool holder |
| KR20090123789A (en) * | 2008-05-28 | 2009-12-02 | 가부시키가이샤 하모닉 드라이브 시스템즈 | Wave-gear-type linear-actuation mechanism |
| CN203765018U (en) * | 2013-11-18 | 2014-08-13 | 重庆清平机械厂 | Flexible gear positioning tool |
| CN203738466U (en) * | 2014-03-05 | 2014-07-30 | 泰州市天鑫机械有限公司 | Novel clamp for producing eccentric bushing parts |
| CN205342108U (en) * | 2015-10-21 | 2016-06-29 | 重庆市江津区禾丰机械有限公司 | Adopt bloated cover device of gear of four symmetrical magnetic paths design |
| CN205270921U (en) * | 2015-12-26 | 2016-06-01 | 北京众合天成精密机械制造有限公司 | Bloated axle of processing flexbile gear |
| CN205464417U (en) * | 2016-04-01 | 2016-08-17 | 韩向阳 | A long section of thick bamboo type part clamping anchor clamps |
| CN107824822A (en) * | 2017-12-24 | 2018-03-23 | 中国航发贵州红林航空动力控制科技有限公司 | A kind of thin-wall rotation-type part cylindrical turning clamping method and device |
| CN208116920U (en) * | 2018-03-26 | 2018-11-20 | 郑州高端装备与信息产业技术研究院有限公司 | Harmonic reducer flexible wheel teeth portion processing equipment expanding arbor |
| CN215033743U (en) * | 2021-07-14 | 2021-12-07 | 陕西渭河精密传动有限公司 | Opening device for inner hole of flexible gear |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114749971A (en) * | 2022-04-28 | 2022-07-15 | 陕西渭河工模具有限公司 | Thin-wall part excircle machining method and tool |
| CN114851072A (en) * | 2022-07-05 | 2022-08-05 | 苏州信能精密机械有限公司 | Thin-wall cup-shaped fixture for flexible gear honing and honing machine tool |
| CN114851072B (en) * | 2022-07-05 | 2022-10-04 | 苏州信能精密机械有限公司 | Thin-wall cup-shaped fixture for flexible gear honing and honing machine tool |
| WO2024197553A1 (en) * | 2023-03-27 | 2024-10-03 | 江苏科技大学 | Parameterized harmonic reducer flexspline expansion sleeve clamp |
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