CN205937705U - Cam follower and drive mechanism - Google Patents
Cam follower and drive mechanism Download PDFInfo
- Publication number
- CN205937705U CN205937705U CN201620802008.4U CN201620802008U CN205937705U CN 205937705 U CN205937705 U CN 205937705U CN 201620802008 U CN201620802008 U CN 201620802008U CN 205937705 U CN205937705 U CN 205937705U
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- face
- inner core
- outer tube
- rolling element
- cam follower
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Abstract
The utility model provides the cam follower and drive mechanism of inner tube and urceolus. Cam follower has inner tube, urceolus etc. A tip of inner tube inserts in the concave part of a shape of face one -tenth at the object object, and another tip of inner tube is outstanding from the concave part. The urceolus is with the help of the rolling element in order can rolling mode establishing the radial outside position at the inner tube. Internal thread portion locates the bottom surface of concave part. Another tip of inner tube be equipped with with the flange that the terminal surface is relative of urceolus. In the axial of external screw thread member, the size sum of the size of urceolus and concave part is lighter than the size of the tip from the flange to the inner tube of inner tube. There is the clearance between urceolus and the smooth face and between rolling element and smooth face to the urceolus can smoothly rotate. Insert in the inner tube at the external screw thread component to during with the internal thread screwing engagement of portion, the inner tube takes place to warp, thereby makes the clearance between inner tube and the concave part filled. Consequently, can set for the machining precision of inner tube and concave part lower.
Description
Technical field
The utility model is related to have cam follower and the transmission mechanism of inner core and outer tube.
Background technology
Japanese Laid-Open Patent Publication JP 2000-346174 disclose one kind have spiral helicine gear (cam) and
The gear hobbing cam of multiple rollers (cam follower).Cam is located at input shaft.Cam follower is located at the periphery of output shaft.Input shaft
Orthogonal with output shaft.Cam and cam follower are located at the input shaft part orthogonal with output shaft.
Cam follower has inner core and outer tube.Embedded hole (recess) is located at the side face of output shaft.Internal thread part is located at recessed
The bottom surface in portion.The peripheral part of the one end of inner core is embedded in recess.Outer tube, around inner core, can pivot.In inner core
Stage casing position be provided with the part prominent to radial outside.The diameter with diameter greater than recess of ledge.Ledge is recessed
Engaging in the side face of output shaft around portion.
Form the flange that oriented radial outside projects in the other end of inner core.Flange can be protected in the way of rolling by outer tube
Hold the end of this outer tube.External thread component is inserted in inner core and is threadedly engaged with internal thread part.External thread component can
Inner core is fixed on recess.
In order to inner core be pressed in recess with higher precision, need to contract by the machining accuracy improving recess and inner core
Gap between little recess and inner core.
Utility model content
The purpose of this utility model is, provides the cam follower being capable of easy to manufacture and has this cam follower
Transmission mechanism.
The cam follower of technical scheme 1 has：Inner core, one side is inserted in and is formed in face of target object
In recess, its another side is prominent from recess；Outer tube, it is located at the position of the other end of described inner core, energy
Enough pivot by rolling element；Internal thread part, it is located at the bottom surface of described recess；And external thread component, it is inserted in described
In inner core, and it is threadedly engaged with internal thread part, thus described inner core is fixed on described target object, wherein, described inner core
One end is abutted against with the bottom surface of recess, is provided with the flange relative with the end face of described outer tube in the other end of described inner core,
In the axial direction of described external thread component, the size sum of the size of described outer tube and described recess be less than inner core from described convex
The size of the one end to described inner core for the edge.Outer tube is less than inner core with size sum in the axial direction of external thread component for the recess
Size in the axial direction of external thread component for the corresponding corresponding region is so that the one end of inner core can be with recess with them
Bottom surface abuts against.When being pressed into inner core in recess, inner core is abutted against with the bottom surface of recess, and inner core is tightened because of external thread component
And deform, expand.Gap between inner core and recess is padded because of this deformation, it is therefore not necessary to improve to reduce gap
Inner core and the machining accuracy of recess.
The corner of the one end in inner core for the cam follower of technical scheme 2 is circumferentially arranged with inclined-plane or curved surface.When passing through
When machining forms recess, remain non-cutting portion in the corner portion of recess sometimes.The corner of one end be inclined plane shape or
Curved, interferes thus without with non-cutting portion.One end reliably can be embedded in recess such that it is able to prevent one end
Portion misplaces at recess.
The corner of the cam follower of technical scheme 3 the other end in inner core is circumferentially arranged with inclined-plane or curved surface.When logical
When crossing machining formation cam path, remain non-cutting portion in the corner portion of cam path sometimes.Angle due to the other end
Portion is inclined plane shape or curved, and therefore, inner core will not be interfered with non-cutting portion after being embedded into cam path.The other end
Swimmingly cam path can be embedded in such that it is able to power is swimmingly delivered to cam follower from cam.
The axial dimension of the rolling element of the cam follower of technical scheme 4 is less than the axial dimension of outer tube, and rolling element is in
Cylindric, the face of the outer cylinder side of flange is in step-like, and the face of the outer cylinder side of described flange has the first face and the second face, should
First face is located at the position by radial outside of flange, and this second face is located at the position by radially inner side of flange, target object
A face there is the tabular surface relative with the first face and the second face, the first face is more than second with the distance between tabular surface size
Face and the distance between tabular surface size, located between the first face and tabular surface, rolling element is located at the second face and tabular surface for outer tube
Between, the axial dimension of outer tube is less than the first face and the distance between tabular surface size, and the axial dimension of rolling element is less than second
Face and the distance between tabular surface size.Compared with curved surface, tabular surface being capable of stably roller body and outer tube.Be installed on
The situation of curved surface is compared, and rolling element and outer tube are easily installed on tabular surface.The axial dimension of outer tube is less than the first face and tabular surface
The distance between size, the axial dimension of rolling element is less than the second face and the distance between tabular surface size.Therefore, rolling element and
Outer tube can swimmingly rotate.
The cam follower of technical scheme 5 has protuberance, and this protuberance is dashed forward from the stage casing position of inner core towards radial outside
Go out, and be located at than target object a face lean on flange side position, rolling element be located in the way of can rolling protuberance with
Between flange, the jag of protuberance is located at the radially end identical position with rolling element, and outer tube in rolling element and projects
This rolling element and protuberance are surrounded by the outside in portion, between protuberance and a face of described target object and outside
It is provided with gap between cylinder and a face of described target object.It is provided with prominent between rolling element and a face of target object
Portion, therefore, rolling element will not directly contact target object a face.Therefore, it is possible to prevent rolling element grinding target object
One face.When external force acts on outer tube from radial outside, outer tube can be abutted against with protuberance, and therefore, protuberance is prevented from
Power acts on rolling element such that it is able to prevent rolling element from deforming.
The transmission mechanism of technical scheme 6 includes：Above-mentioned cam follower；And cam, it has for cam follower engaging
Cam path.Transmission mechanism has above-mentioned cam follower, same with technical scheme 1～technical scheme 5 therefore, it is possible to obtain
Effect.
Brief description
Fig. 1 is the partial sectional view representing transmission mechanism.
Fig. 2 is the enlarged partial sectional view of Fig. 1.
Fig. 3 is the enlarged partial sectional view of the variation of transmission mechanism.
Specific embodiment
Brief description the utility model below according to transmission mechanism.Transmission mechanism is, for example, gear hobbing cam, gear hobbing cam
Including input shaft 1 and output shaft 3 (target object).Input shaft 1 is orthogonal with output shaft 3.Cam 2 is in input shaft 1 with output shaft 3 just
Located at this input shaft 1 at the part handed over.Cam 2 has the spiral helicine cam path 2a of the outer peripheral face formation in input shaft 1.Multiple
Cam follower 4 is circumferentially lined up in the outer peripheral face of output shaft 3.
It is provided with the columned recess 3a corresponding with each cam follower 4 in the outer peripheral face of output shaft 3.Internal thread part 3c
Bottom surface 3b located at recess 3a.Cam follower 4 has inner core 5, outer tube 7, rolling element 9 and external thread component 8.The one of inner core 5
Side is inserted in recess 3a.Inner core 5 is configured to substantially coaxial with internal thread part 3c.The corner of the one end of inner core 5 is in complete cycle
In the range of be formed as curved surface 5a.Curved surface 5a can also be formed as inclined plane shape.The end face of the one end of inner core 5 and the bottom surface of recess 3a
3b abuts against.
It is provided with the flange 6 projecting towards radial outside in the other end of inner core 5.The corner of flange 6 sets in the range of complete cycle
There is inclined-plane 6a.Curved surface can also be arranged to replace inclined-plane 6a.Spot-facing 5b is located at the end face of the other end of inner core 5.
The face relative with output shaft 3 of flange 6 is in step-like, and it has the first face 61 and the second face 62, this first face 61
Positioned at flange 6 by radial outside position, this second face 62 be located at flange 6 the position by radially inner side.Outside output shaft 3
The part relative with the first face 61 and the second face 62 in side face forms relatively flat.Below by the outer peripheral face of output shaft 3
Flat part be referred to as tabular surface 3d.First face 61 and the distance between tabular surface 3d size are more than the second face 62 and tabular surface
The distance between 3d size.First face 61, the second face 62, it is parallel to each other between tabular surface 3d.
Outer tube 7 is located at the outside of this inner core 5 in the way of substantially coaxial with inner core 5.Outer tube 7 is in the another side of inner core 5
Between tabular surface 3d and the first face 61.The end face of outer tube 7 is relative with the first face 61, its other end and tabular surface 3d phase
Right.Flange 6 can keep this outer tube 7 by outer tube 7 in the way of pivoting.Multiple rolling elements 9 edge between inner core 5 and outer tube 7
Circumferential array is got up.Rolling element 9 is parallel with inner core 5 and outer tube 7 cylindric, and be located at the second face 62 and tabular surface 3d it
Between.The end face of rolling element 9 is relative with the second face 62, and its other end is relative with tabular surface 3d.Outer tube 7 can be by rolling element
9 rotate around inner core 5.
External thread component 8 is inserted in inner core 5.External thread component 8 has head 8a and bar portion 8b, bar portion 8b and internal thread
Portion 3c is threadedly engaged.Head 8a is located in spot-facing 5b, not prominent from inner core 5.Head 8a is engaging in the bottom of spot-facing 5b, inner core
5 one end is abutted against with bottom surface 3b.Inner core 5 is fixed on output shaft 3 by external thread component 8, and inner core 5 can be rotated with outer tube 7
Mode keep this outer tube 7.
As shown in Fig. 2 the axial dimension of outer tube 7 is set to A, the axial dimension (depth) of recess 3a is set to B, by inner core
The axial dimension of the end face (bottom surface 3b) of 5 one end from the first face 61 to inner core 5 is set to C.Cam follower 4 is designed to
A+B ＜ C.Inner core 5 expands such that it is able to fill up the gap between inner core 5 and recess 3a because external thread component 8 is tightened.
And, there is also gap between outer tube 7 and output shaft 3 and between rolling element 9 and output shaft 3.Due to this
The presence in gap, outer tube 7 and rolling element 9 can rotate.In other words, the axial dimension of outer tube 7 is designed to less than the first face 61
With the distance between tabular surface 3d size, the axial dimension of rolling element 9 is designed to less than between the second face 62 and tabular surface 3d
Apart from size.
The axial dimension sum (A+B) of the axial dimension of outer tube 7 and recess 3a is set to be less than the axial dimension of inner core 5
(C) so that the end face of the one end of inner core 5 can be abutted against with bottom surface 3b.Inner core 5 deforms because external thread component 8 is tightened,
Expand.Because the gap between inner core 5 and recess 3a is padded, it is therefore not necessary to improve inner core 5 and recess to reduce gap
The machining accuracy of 3a.And, it is formed with gap between outer tube 7 and tabular surface 3d and between rolling element 9 and tabular surface 3d,
So as to realize the smoothly rotation of outer tube 7.
It is provided with curved surface 5a in the corner of the one end of inner core 5.When recess 3a is formed by machining, sometimes recessed
The corner portion of portion 3a remains non-cutting portion.Because curved surface 5a is located at the corner of the one end of inner core 5, therefore, inner core 5 will not be with
Non- cutting portion interferes.The one end of inner core 5 can reliably be embedded in recess 3a such that it is able to prevent one end of inner core 5
Portion misplaces at recess 3a.Also there is when being provided with inclined-plane in the corner of the one end of inner core 5 same effect.
It is provided with inclined-plane 6a in the corner of flange 6 (the other end of inner core 5).When by machining formation cam path 2a
When, remain non-cutting portion in the corner portion of cam path 2a sometimes.Because inclined-plane 6a is located at the angle of the other end of inner core 5
Portion, therefore, inner core 5 will not be interfered with non-cutting portion when being embedded in cam path 2a.The other end of inner core 5 can be smooth
Be embedded in cam path 2a such that it is able to power is swimmingly delivered to cam follower 4 from cam 2.The other end in inner core 5
Corner be provided with during curved surface also there is same effect.
Compared with curved surface, tabular surface 3d being capable of stably roller body 9 and outer tube 7.With the situation phase being installed on curved surface
Easily it is installed on tabular surface 3d than, rolling element 9 and outer tube 7.The axial dimension of outer tube 7 is less than between the first face 61 and tabular surface 3d
Apart from size, the axial dimension of rolling element 9 is less than the second face 62 and the distance between tabular surface 3d size.Therefore, rolling element 9
Can swimmingly rotate with outer tube 7.
Transmission mechanism only passes through external thread component 8 to be inserted in inner core 5 and tightens external thread component 8 just can will be convex
Wheel driven member 4 is fixed on output shaft 3, therefore, arranges through hole with output shaft 3, and external thread component 8 is inserted in after through hole again
Compared with situation about engaging with nut thread, installing becomes easy.
Sometimes inner core 5 is changed into solid pin, form recess in the side face of solid pin, edge and solid pin are set in output shaft 3
The through hole that orthogonal direction is run through, external thread component 8 is inserted in through hole, is embedded in solid pin by making external thread component 8
Recess solid pin is fixed on output shaft 3.Compared with this way, in the transmission mechanism of present embodiment, external screw thread structure
Part 8 will not radially press inner core 5, and therefore, inner core 5 will not radially misplace.Recessed due to not having the outer peripheral face in inner core 5 to be formed
Portion, the therefore intensity of inner core 5 will not reduce.
The variation that the structure of transmission mechanism is carried out obtaining after partial alteration is illustrated.As shown in figure 3, flange 6
The face relative with output shaft 3 be not step-like, it has the first face 61, but does not have the second face 62.Transmission mechanism is in inner core 5
Stage casing position have towards inner core 5 radial outside project protuberance 5c.Protuberance 5c is along the whole periphery setting of inner core 5.
Radial dimension at protuberance 5c for the inner core 5 is less than the radial dimension of flange 6.
The position of flange 6 side is being leaned in protuberance 5c configuration than tabular surface 3d.Rolling element 9 is located at convex in the way of can rolling
Between edge 6 and protuberance 5c.The jag of protuberance 5c be located at rolling element 9 radially hold roughly the same position.Outward
Cylinder 7 is located between flange 6 and tabular surface 3d, surrounds this rolling element 9 and protuberance 5c in the outside of rolling element 9 and protuberance 5c
Get up.Outer tube 7 can pivot by rolling element 9.
The axial dimension of rolling element 9 is roughly equal with the axial dimension A of outer tube 7 with the axial dimension sum of protuberance 5c.
The axial dimension B sum of the axial dimension A and recess 3a of outer tube 7 is less than the axial dimension C from the first face 61 to bottom surface 3b, because
This, be provided with gap between protuberance 5c and tabular surface 3d and between outer tube 7 and tabular surface 3d.
Inner core 5 deforms, expands because external thread component 8 is tightened.Because the gap between inner core 5 and recess 3a is filled out
Mend, it is therefore not necessary to improve inner core 5 and the machining accuracy of recess 3a to reduce gap.And, in outer tube 7 and tabular surface 3d
Between be formed with gap such that it is able to realize the smoothly rotation of outer tube 7.Because rolling element 9 is not directly contacted with tabular surface 3d, because
This, be prevented from rolling element 9 grinding tabular surface 3d.The jag of protuberance 5c is positioned at the radially end with rolling element 9 substantially
Identical position, when external force acts on outer tube 7 from radial outside, outer tube 7 can be abutted against with protuberance 5c, therefore, protuberance
5c is prevented from power and acts on rolling element 9 such that it is able to prevent rolling element 9 from deforming.
Claims (6)
1. a kind of cam follower, this cam follower (4) has：Inner core (5), one side is inserted in target object (3)
The recess (3a) that formed of face in, its another side is prominent from described recess；Outer tube (7), it is located at described inner core
The position of the other end, can pivot by rolling element；Internal thread part (3c), it is located at the bottom of described recess
Face (3b)；And external thread component (8), it is inserted in described inner core, and is threadedly engaged with described internal thread part, thus will be described
Inner core is fixed on described target object,
This cam follower is characterised by,
The one end of described inner core is abutted against with the bottom surface of described recess,
It is provided with the flange (6) relative with the end face of described outer tube in the other end of described inner core,
In the axial direction of described external thread component, the size of described outer tube is less than described inner core with the size sum of described recess
From described flange to the size of the one end of described inner core.
2. cam follower according to claim 1 it is characterised in that
Described inner core described one end corner circumferentially arranged with inclined-plane or curved surface (5a).
3. cam follower according to claim 1 and 2 it is characterised in that
Described the other end of described inner core corner circumferentially arranged with inclined-plane (6a) or curved surface.
4. cam follower according to claim 1 and 2 it is characterised in that
The axial dimension of described rolling element is less than the axial dimension of described outer tube, and described rolling element is cylindrical,
The face by described outer tube side of described flange is in step-like,
The face by described outer tube side of described flange has the first face (61) and the second face (62), and this first face is located at described flange
The position by radial outside, this second face be located at described flange the position by radially inner side,
One face of described target object has the tabular surface (3d) relative with described first face and the second face,
Described first face is more than the distance between described second face and described tabular surface with the distance between described tabular surface size
Size,
Described outer tube located between described first face and described tabular surface,
Described rolling element located between described second face and described tabular surface,
The axial dimension of described outer tube is less than described first face and the distance between described tabular surface size,
The axial dimension of described rolling element is less than described second face and the distance between described tabular surface size.
5. cam follower according to claim 1 and 2 it is characterised in that
This cam follower has protuberance, and this protuberance projects from the stage casing position of inner core towards radial outside, and is located at than institute
The position of described flange side is leaned in the one face stating target object,
Described rolling element is located between described protuberance and flange in the way of can rolling,
The jag of described protuberance is located at the radially end identical position with described rolling element,
This rolling element and protuberance are surrounded by described outer tube in the outside of described rolling element and protuberance,
One between protuberance and one face of described target object and in outer tube and described target object
It is provided with gap between face.
6. a kind of transmission mechanism, this transmission mechanism is characterised by, including：
Cam follower any one of Claims 1 to 5；And
Cam (2), it has the cam path (2a) for the engaging of described cam follower.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2015147632A JP6540327B2 (en) | 2015-07-27 | 2015-07-27 | Cam follower and transmission mechanism |
| JP2015-147632 | 2015-07-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205937705U true CN205937705U (en) | 2017-02-08 |
Family
ID=57927387
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620802008.4U Active CN205937705U (en) | 2015-07-27 | 2016-07-27 | Cam follower and drive mechanism |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP6540327B2 (en) |
| CN (1) | CN205937705U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018151011A (en) * | 2017-03-14 | 2018-09-27 | 高広工業株式会社 | Roller gear |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4384751B2 (en) * | 1999-06-08 | 2009-12-16 | 株式会社三共製作所 | Cam follower mounting structure |
| JP4603643B2 (en) * | 1999-06-08 | 2010-12-22 | 株式会社三共製作所 | Cam follower fixing structure |
| JP3636104B2 (en) * | 2001-06-28 | 2005-04-06 | 高広工業株式会社 | Rotation transmission device, toothed rotator used therefor, and method of manufacturing rotation transmission device |
| JP2004264784A (en) * | 2003-03-04 | 2004-09-24 | Nikon Corp | Sliding member and lens barrel |
-
2015
- 2015-07-27 JP JP2015147632A patent/JP6540327B2/en active Active
-
2016
- 2016-07-27 CN CN201620802008.4U patent/CN205937705U/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| JP6540327B2 (en) | 2019-07-10 |
| JP2017026099A (en) | 2017-02-02 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |