CN206803909U - Spline rod distance measurement auxiliary fixture - Google Patents
Spline rod distance measurement auxiliary fixture Download PDFInfo
- Publication number
- CN206803909U CN206803909U CN201720371536.3U CN201720371536U CN206803909U CN 206803909 U CN206803909 U CN 206803909U CN 201720371536 U CN201720371536 U CN 201720371536U CN 206803909 U CN206803909 U CN 206803909U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- fixing hole
- spline
- eccentric cam
- pair
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Abstract
The utility model discloses a kind of spline rod distance measurement auxiliary fixture, including pedestal and at least one pair of eccentric cam, at least one pair of fixing hole is provided with pedestal；Pedestal is used to support spline to be measured；Eccentric cam includes the first cylinder and the second cylinder, and the first cylinder is not coaxial with the second cylinder, and eccentric cam is correspondingly arranged with fixing hole, and the first cylinder is detachably connected with fixing hole；First cylinder makes the second cylinder clamp length bar for driving the second cylinder to turn to length bar and sentence.Jig structure provided by the utility model is simple, and cost is cheap, creatively will be applied to fixed mechanism for the cam of transmission mechanism.More because the characteristic of cam mechanism, especially since the angle of tool eccentric cam of the present utility model can be with controllable adjustment, and tool of the present utility model is for asymmetric odd number gear spline, there is sizable superiority, this very formidable limitation of tool before being.
Description
Technical field
It the utility model is related to spline rod distance measurement auxiliary fixture, more particularly to spline rod distance measurement auxiliary fixture.
Background technology
Spline connection is one kind connection that flat key quantitatively develops and improved in quality, and it is by the external splines and hub on axle
The internal spline composition in hole, side during work by key extrudes mutually transmission torque.According to tooth form, spline can be divided into rectangular spline and
Two kinds of involute spline.
The flank profil of involute spline is involute, and pressure angle of graduated circle mainly has 30 ° and 45 ° two kinds.Fig. 1 be 30 ° of angles gradually
Burst at the seams spline, and Fig. 2 is 45° angle involute spline, and involute spline can be processed with the method for manufacture gear, manufacturability compared with
Good, the accuracy of manufacture is higher, and stress concentration is small, is easy to feel relieved, and when the torque of transmission is larger and the diameter of axle is also larger, preferably uses and gradually opens
Line spline couples.
The centering mode of involute spline is felt relieved for tooth form.When tooth stand under load, the radial load on tooth can play self-centering
Effect, is advantageous to each tooth and uniformly carries.
Pressure angle is 45 ° of involute spline, because tooth form is blunt and short, compared with pressure angle is 30 ° of involute spline,
Weakening to connector is smaller, but the face height of tooth is smaller, therefore bearing capacity is relatively low, and it is lighter to be used for load, diameter compared with
Small quiet connection, the propeller boss especially suitable for thin-walled parts couple.
From the above mentioned, spline connection is used for that load is larger, and centering precision is required in higher connection, such as automobile, lathe,
In the machines such as aircraft.
Involute spline gauge is for calibrating involute spline, therefore the calibration to involute spline gauge seems outstanding
To be important.Involute spline gauge mainly calibrates the parameter such as rod spacing, big path.According to national standard, measuring stick spacing will lead to
Length bar is crossed to realize.But the fixation in measurement to length bar, although there is the tool fixed for spline length bar the country at present,
It is substantially dual numbers tooth spline to be relatively applicable, to odd number gear spline, low module spline then there are some limitations.It is and big at present
Partial tool, complicated, cost is more expensive.
Utility model content
The utility model provides a kind of spline rod distance measurement auxiliary fixture, including pedestal and at least one pair of bias it is convex
Wheel,
At least one pair of fixing hole is provided with the pedestal；The pedestal is used to support spline and length bar to be measured；
The eccentric cam includes the first cylinder and the second cylinder, and first cylinder and second cylinder be not coaxial,
The eccentric cam is correspondingly arranged with the fixing hole, and first cylinder is detachably connected with the fixing hole；
First cylinder makes the second cylinder clamp length bar for driving second cylinder to turn to length bar and sentence.
Further, first cylinder is provided with external screw thread, and the fixing hole is through hole, first cylinder with it is described
Fixing hole is fixed by screw nut.
Further, multipair fixing hole is provided with the pedestal, the pitch of holes of every a pair of fixing holes is different；Described second
The top surface of cylinder sets fluted.
Further, the material of second cylinder is copper or other softer materials such as aluminium, plastics, rubber.
Further, the cylinder outer wall of second cylinder is arranged with protective case.
Further, the radius of second cylinder be more than first cylinder radius, first cylinder with it is described
Second cylinder inscribe, the centre-to-centre spacing of a pair of fixing holes is 2 φ 2- φ 1, wherein, φ 2 is the diameter of the second cylinder, and φ 1 is first
The diameter of cylinder.
Further, second cylinder is a diameter ofFirst cylinder it is a diameter ofWherein, a is described
The lower limit for the tool range that fixing hole and the eccentric cam determine, b is the fixing hole and what the eccentric cam determined controls
Have the upper limit of range, wherein, a<b<2a.
The utility model additionally provides a kind of spline rod measurement method for distance, and methods described is surveyed based on above-mentioned spline rod spacing
Auxiliary fixture is measured, methods described includes：
Spline to be measured is placed on pedestal；A pair of length bars are placed on measurement position；
Estimate the rod spacing M of two length bars to be fixed；
The position of a pair of eccentric cams is adjusted according to the rod spacing M so that each first cylinder clamps corresponding amount
Rod；
A pair of eccentric cams are separately fixed on pedestal；
Measure the rod spacing of a pair of length bars.
Length bar is further, described that a pair of eccentric cams are fixed on pedestal according to the rod spacing M so that the first circle
Post clamps length bar, including：
It is described according to line and the angle of line of eccentricity centered on the rod spacing M acquisition first angles θ, the first angle θ
Center line is the line of centres of a pair of fixing holes, and the line of eccentricity is the company in the axle center and the axle center of the second cylinder of the first cylinder
Line；
A pair of eccentric cams are fixed on pedestal according to first angle θ so that the first cylinder clamps length bar.
Further, the radius of second cylinder be more than first cylinder radius, first cylinder with it is described
Second cylinder inscribe, the centre-to-centre spacing of a pair of fixing holes is 2 φ 2- φ 1, wherein, φ 2 is the diameter of the second cylinder, and φ 1 is first
The diameter of cylinder；The first angle θ is obtained by following formula：
Wherein, x be the first cylinder radius, Δ for the second cylinder diameter and the first cylinder diameter difference.
The application can be by setting the pitch of holes of positioning hole and the eccentric throw of eccentric cam to determine range, in addition, originally
Application can also extend measurement range by setting multipair positioning hole and eccentric cam, after extending measurement range, can include
All rod spacing specified in national standard (only need workbench and cam has a corresponding size, and by the spacing and cam of through hole pair
Measurement range change it is corresponding).
Jig structure provided by the utility model is simple, and cost is cheap, creatively will be (inclined for the cam of transmission mechanism
Cardiac prominence wheel) it is applied to fixed mechanism.More because the characteristic of cam mechanism, especially since tool bias of the present utility model is convex
The angle of wheel can be with controllable adjustment, and tool of the present utility model has sizable superiority for asymmetric odd number gear spline,
This very formidable limitation of tool before being.
By multiple authentication, tool measurement reproducibility of the present utility model is good, easy to operate, and is sat in superhigh precision three
Parametrization automatic measurement can be realized by putting on, and substantially increase the measurement efficiency and precision of spline rod spacing.
Brief description of the drawings
, below will be right in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art and advantage
The required accompanying drawing used is briefly described in embodiment or description of the prior art, it should be apparent that, it is attached in describing below
Figure is only some embodiments of the utility model, for those of ordinary skill in the art, is not paying creative work
On the premise of, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is 30 ° of angle involute spline schematic diagrames；
Fig. 2 is 45° angle involute spline schematic diagram；
Fig. 3 is the structure chart for the spline rod distance measurement auxiliary fixture that the utility model embodiment provides；
Fig. 4 is the schematic diagram for the eccentric cam that the utility model embodiment provides；
Fig. 5 is the working state schematic representation for the spline rod distance measurement auxiliary fixture that the utility model embodiment provides；
Fig. 6 is the schematic diagram for the minimum range that the utility model embodiment provides；
Fig. 7 is the schematic diagram for the maximum range that the utility model embodiment provides；
Fig. 8 is the first angle schematic diagram calculation that the utility model embodiment provides.
In figure, 1- pedestals, 2- eccentric cams, 3- positioning holes, 4- splines to be measured, 5- length bars；The cylinders of 21- first, 22- second
Cylinder, 23- grooves, 24- external screw threads.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the premise of creative work
Lower obtained every other embodiment, belong to the scope of the utility model protection.
Embodiment：
As shown in Figure 3-Figure 5, the utility model provides a kind of spline rod distance measurement auxiliary fixture, including the He of pedestal 1
At least one pair of eccentric cam 2.
At least one pair of fixing hole 3 is provided with the pedestal 1；The pedestal 1 is used to support spline and length bar to be measured；
The eccentric cam 2 includes the first cylinder 21 and the second cylinder 22, first cylinder 21 and second cylinder
22 is coaxial.
In an optional embodiment, first cylinder 21 is relatively fixed with the second cylinder 22.
In an optional embodiment, first cylinder 21 is integrally formed with the second cylinder 22.Or described first
Cylinder 21 is fixed together by other means with the second cylinder 22, does not produce relative displacement, so that the energy of the first cylinder 21
The second cylinder 22 is enough driven to move.
The eccentric cam 2 is correspondingly arranged with the fixing hole 3, and first cylinder 21 and the fixing hole 3 are detachable
Connection；Each fixing hole 3 is corresponding with an eccentric cam 2.
First cylinder 21 makes the clamping amount of the second cylinder 22 for driving second cylinder 22 to turn to length bar and sentence
Rod.
Selectable, first cylinder is provided with external screw thread 24, and the fixing hole 3 is through hole, first cylinder 21
Fixed with the fixing hole 3 by screw nut.External screw thread 24 is for fixing eccentric cam, and supporting is the spiral shell of standard
Mother, the size of screw thread in itself is naturally also standard.
Certainly, alternatively, fixing hole 3 is the other kinds of connections such as screwed hole or magnet.
Further, multipair fixing hole 3 is provided with the pedestal 1, the pitch of holes of every a pair of fixing holes 3 is different.It is described
Multipair fixing hole 3 can determine different measurement ranges from various sizes of eccentric cam.
Eccentric cam 2 is used to fix length bar, is core of the present utility model.By repeatedly attempting, it is originally designed for
Range, is not segmented by the design of wide range, causes eccentric wheel structure heavy, and the fixed guide groove also needed to by outside, not
Compact-sized purpose can be reached.After range segmentation, this problem is overcome well, is provided with compact structure.By setting
Multigroup eccentric cam 2 is put, and is correspondingly arranged multipair fixing hole 3, realizes more measuring ranges.
The outer surface of eccentric cam 2 changes with the measurement range that the range difference at fixing hole center is cam, this measurement range
Change needs are corresponding with the spacing of the through hole pair on workbench, and both joints are exactly the range of range.Eccentric cam
It is for fixing length bar, current general processing conditions is attained by required precision, as long as length bar can be made to fix can.It is convex
The profile of wheel, it is impossible to have mutation, can produce to continuity the change of measurement range.
In actually making, rotate for convenience, the top surface of second cylinder 22 sets fluted 23.Rotation work used
Tool is exactly general straight screwdriver used in everyday.
Further, because the length bar material therefor that current national standard defines is generally steel, the material of steel is harder, in order to prevent
Weigh length bar wounded, the material of second cylinder is copper or other softer materials.
As an alternative solution, the cylinder outer wall of second cylinder is arranged with protective case, prevents from weighing length bar wounded.
Further, the radius of second cylinder 22 is more than the radius of first cylinder 21, first cylinder 21
With the inscribe of the second cylinder 22, the centre-to-centre spacing of a pair of fixing holes is 2 φ 2- φ 1, wherein, φ 2 be the second cylinder diameter, φ
1 is the diameter of the first cylinder.
Further, second cylinder 22 is a diameter ofFirst cylinder 21 it is a diameter ofWherein, a is
The lower limit for the tool range that the fixing hole and the eccentric cam 2 determine, b are that the fixing hole and the eccentric cam 2 are true
The upper limit of fixed tool range, wherein, a<b<2a.
Technical approach of the present utility model is specifically addressed below, as shown in Figure 6, Figure 7：
O1 is the axle center of the first cylinder, and O2 is the axle center of the second cylinder, the first cylinder 21 and the inscribe of the second cylinder 22.
If eccentric throw O1O2, a diameter of φ 2 of the second cylinder, first that the distance between O1 and O2 are eccentric cam 2 justify
A diameter of φ 1 of post, the radius of the first cylinder is x, then：φ 1=2x；
Make Δ be the second cylinder diameter and the first cylinder diameter difference, then：O1O2=Δ/2, φ 2=2x+ Δs.
The range and pedestal of the auxiliary fixture of the application, the parameter of eccentric cam are determined by following methods：
The center of positioning hole 3 and the axis coinciding of the first cylinder.
When the centre-to-centre spacing of a pair of positioning holes is 2x+2 Δs, structure is most compact, and now, corresponding Lower Range is a, range
The upper limit is b；
A=4x+2 Δs；
B=4x+4 Δs.
Two formulas can obtain more than：
By x>0, obtain 2a>b；
By Δ>0, obtain b>a.
Therefore：a<b<2a.
Therefore：
The centre-to-centre spacing of a pair of fixing holes is
The utility model additionally provides a kind of spline rod measurement method for distance, and methods described is surveyed based on above-mentioned spline rod spacing
Auxiliary fixture is measured, methods described includes：
Spline to be measured is placed on pedestal；A pair of length bars are placed on measurement position；
Estimate the rod spacing M of two length bars to be fixed；
The position of a pair of eccentric cams is adjusted according to the rod spacing M so that each first cylinder clamps corresponding amount
Rod；
A pair of eccentric cams are separately fixed on pedestal；
Measure the rod spacing of a pair of length bars.
Further, it is described that a pair of eccentric cams are fixed on pedestal according to the rod spacing M so that the first cylinder presss from both sides
Tight length bar, including：
It is described according to line and the angle of line of eccentricity centered on the rod spacing M acquisition first angles θ, the first angle θ
Center line is the line of centres of a pair of fixing holes, and the line of eccentricity is the company in the axle center and the axle center of the second cylinder of the first cylinder
Line；
A pair of eccentric cams are fixed on pedestal according to first angle θ so that the first cylinder clamps length bar.
Further, the radius of second cylinder be more than first cylinder radius, first cylinder with it is described
Second cylinder inscribe, the centre-to-centre spacing of a pair of fixing holes areWherein, φ 2 is the diameter of the second cylinder, and φ 1 is the
The diameter of one cylinder.The first angle θ is obtained by following formula：
Wherein, x be the first cylinder radius, Δ for the second cylinder diameter and the first cylinder diameter difference.
Fig. 8 is the first angle schematic diagram calculation that the utility model embodiment provides, while is also the principle of general range
Figure.
As shown in Figure 8：First angle θ derivation is as follows：
Length bar and the second cylinder are circumscribed, point of contact T, T '.
If O1O2 and O1O angle is first angle θ, θ is 0~180 degree；O is the center of the line of a pair of fixing holes,
Then：
O1O=x+ Δs
It can be obtained by the cosine law：
TT '=M=2x (TO2+O2O)；
As known M, θ can be tried to achieve.
The utility model measures primarily directed to the rod spacing of spline.
The application can be by setting the pitch of holes of positioning hole and the eccentric throw of eccentric cam to determine range, in addition, originally
Application can also extend measurement range by setting multipair positioning hole and eccentric cam, after extending measurement range, can include
All rod spacing specified in national standard (only need workbench and cam has a corresponding size, and by the spacing and cam of through hole pair
Measurement range change it is corresponding).
Jig structure provided by the utility model is simple, and cost is cheap, creatively will be (inclined for the cam of transmission mechanism
Cardiac prominence wheel) it is applied to fixed mechanism.More because the characteristic of cam mechanism, especially since tool bias of the present utility model is convex
The angle of wheel can be with controllable adjustment, and tool of the present utility model has sizable excellent for asymmetric odd number gear spline
More property, this very formidable limitation of tool before being.
By multiple authentication, tool measurement reproducibility of the present utility model is good, easy to operate, and is sat in superhigh precision three
Parametrization automatic measurement can be realized by putting on, and substantially increase the measurement efficiency and precision of spline rod spacing.
Described above is preferred embodiment of the present utility model, it is noted that for the ordinary skill of the art
For personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these are improved and profit
Decorations are also considered as the scope of protection of the utility model.
Claims (7)
- A kind of 1. spline rod distance measurement auxiliary fixture, it is characterised in that including pedestal (1) and at least one pair of eccentric cam (2),At least one pair of fixing hole (3) is provided with the pedestal (1)；The pedestal (1) is used to support spline and length bar to be measured；The eccentric cam (2) includes the first cylinder (21) and the second cylinder (22), first cylinder (21) and described second Cylinder (22) is not coaxial,The eccentric cam (2) is correspondingly arranged with the fixing hole (3), and first cylinder (21) can with the fixing hole (3) Dismantling connection；First cylinder (21) clamps the second cylinder (22) for driving second cylinder (22) to turn to length bar and sentence Length bar.
- 2. spline rod distance measurement auxiliary fixture according to claim 1, it is characterised in that first cylinder is provided with External screw thread (24), the fixing hole (3) are through hole, and first cylinder (21) is consolidated with the fixing hole (3) by screw nut It is fixed.
- 3. spline rod distance measurement auxiliary fixture according to claim 1, it is characterised in that set on the pedestal (1) There are multipair fixing hole (3), the pitch of holes difference of every a pair of fixing holes (3)；The top surface of second cylinder (22) sets fluted (23)。
- 4. spline rod distance measurement auxiliary fixture according to claim 1, it is characterised in that the material of second cylinder For copper.
- 5. spline rod distance measurement auxiliary fixture according to claim 1, it is characterised in that the cylinder of second cylinder Outer wall is arranged with protective case.
- 6. spline rod distance measurement auxiliary fixture according to claim 1, it is characterised in that second cylinder (22) Radius is more than the radius of first cylinder (21), first cylinder (21) and the second cylinder (22) inscribe, and a pair solid The centre-to-centre spacing for determining hole is 2 φ 2- φ 1, wherein, φ 2 is the diameter of the second cylinder (22), and φ 1 is the diameter of the first cylinder.
- 7. spline rod distance measurement auxiliary fixture according to claim 6, it is characterised in that second cylinder (22) It is a diameter ofFirst cylinder (21) it is a diameter ofWherein, a is that the fixing hole and the eccentric cam (2) determine Tool range lower limit, b is the upper limit for the tool range that the fixing hole and the eccentric cam (2) determine, wherein, a<b< 2a。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720371536.3U CN206803909U (en) | 2017-04-11 | 2017-04-11 | Spline rod distance measurement auxiliary fixture |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720371536.3U CN206803909U (en) | 2017-04-11 | 2017-04-11 | Spline rod distance measurement auxiliary fixture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206803909U true CN206803909U (en) | 2017-12-26 |
Family
ID=60732598
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720371536.3U Active CN206803909U (en) | 2017-04-11 | 2017-04-11 | Spline rod distance measurement auxiliary fixture |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206803909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931856A (en) * | 2017-04-11 | 2017-07-07 | 苏州市计量测试研究所 | Spline rod distance measurement auxiliary fixture and measuring method |
-
2017
- 2017-04-11 CN CN201720371536.3U patent/CN206803909U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106931856A (en) * | 2017-04-11 | 2017-07-07 | 苏州市计量测试研究所 | Spline rod distance measurement auxiliary fixture and measuring method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206803909U (en) | Spline rod distance measurement auxiliary fixture | |
| CN106931856A (en) | Spline rod distance measurement auxiliary fixture and measuring method | |
| CN201218717Y (en) | Alignment measuring tool for coupling | |
| CN214502335U (en) | Bevel gear shaft gear taper detection device | |
| CN111185609A (en) | Aligning chuck and measurement compensation device applied to pipe cutting device | |
| CN215832645U (en) | Coaxiality detection device | |
| CN201036844Y (en) | Traction electric motor base correcting craft equipment | |
| CN211276960U (en) | Copper aluminium friction welding device | |
| CN203184899U (en) | Cylindrical-workpiece side-wall part welding device | |
| CN213888483U (en) | Modular reamer system | |
| CN212747713U (en) | Spherical surface automatic measuring device that beats | |
| CN214199885U (en) | Adjustable centering tool for coupler | |
| CN206096953U (en) | Center pin structure of angel position control revolving stage | |
| CN220007557U (en) | Gear fixing tool | |
| CN212683004U (en) | Novel pipe fitting positioning mechanism | |
| CN201016682Y (en) | Adjustable outer taper gauge | |
| CN220170138U (en) | Portable angle measuring tool | |
| CN219115683U (en) | Steering engine installation's adjustment frock | |
| CN217764928U (en) | Gear box back clearance detection device | |
| CN219890305U (en) | Anode slot measuring tool for lithium electric copper foil production | |
| CN219521015U (en) | Support for welding steel structure | |
| CN219474501U (en) | Vernier caliper for measuring hole and groove distance | |
| CN218994214U (en) | Air classifier terminal surface gear shaft terminal surface detection device that beats | |
| CN215064244U (en) | Detection apparatus for plastics tubular product internal diameter | |
| CN111721246A (en) | Spherical surface automatic measuring device that beats |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant |