CN211824230U - Eccentric shaft detection tool - Google Patents
Eccentric shaft detection tool Download PDFInfo
- Publication number
- CN211824230U CN211824230U CN202020716476.6U CN202020716476U CN211824230U CN 211824230 U CN211824230 U CN 211824230U CN 202020716476 U CN202020716476 U CN 202020716476U CN 211824230 U CN211824230 U CN 211824230U
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- China
- Prior art keywords
- eccentric shaft
- shaft
- shaft hole
- eccentric
- cam
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Abstract
The utility model provides an utensil is examined to eccentric shaft for the realization is to the detection of eccentric shaft, and the eccentric shaft includes first eccentric shaft, first cam, second eccentric shaft and second cam. The gauge comprises a base, a first cam shaft sleeve, a first eccentric shaft sleeve, an integrated shaft sleeve, a measuring bar and an altimeter. A first shaft hole matched with the first cam is formed on the first cam shaft sleeve; a second shaft hole matched with the first eccentric shaft is formed in the first eccentric shaft sleeve, and a preset first eccentricity is formed between the second shaft hole and the first shaft hole; a third shaft hole and a fourth shaft hole which are communicated are formed in the integrated shaft sleeve, the third shaft hole is matched with the second cam, the fourth shaft hole is matched with the second eccentric shaft, and a preset second eccentric amount is formed between the third shaft hole and the fourth shaft hole; the first end of measuring the strip is connected on the integral type axle sleeve, and the second end is the free end. The utility model discloses simple structure, detection speed are fast, the detection precision is high, and it provides detection efficiency, has reduced the detection cost.
Description
Technical Field
The utility model relates to an axle type part production field especially relates to an utensil is examined to eccentric shaft.
Background
The eccentric shaft is widely applied to mechanical equipment, and in mechanical transmission, the rotation motion is changed into reciprocating linear motion or the reciprocating linear motion is changed into rotation motion, and the rotation motion is generally completed by the eccentric shaft. As shown in fig. 1 to 2, there is shown a typical eccentric shaft 100, and the eccentric shaft 100 includes a first eccentric shaft 101, a first cam 102, a second eccentric shaft 103, and a second cam 104. Wherein: the end of one eccentric shaft 101 is provided with a center hole, and the outer circle of the second eccentric shaft 103 is formed with a spline.
The precision of the eccentricity and the angle of the eccentric shaft directly affects the performance of the whole device, such as the eccentric shaft 100 in fig. 1 to 2, when the device is shipped, it is necessary to ensure that the eccentricity of the first eccentric shaft 101 relative to the first cam 102, the eccentricity of the second eccentric shaft 103 relative to the second cam 104 are lower than the predetermined value, and the phase angle of the eccentric shaft 100 is lower than the predetermined value. The phase angle can be characterized as the angle between the line of the centres of the first eccentric shaft 101 and the first cam 102 and the line of the centres of the second eccentric shaft 103 and the second cam 104.
At present, for the detection of the eccentricity and the phase angle of the eccentric shaft, a conventional detection method generally adopts a phase meter for detection, but the phase meter detection has the defects of low efficiency and high cost corresponding to the mass production of a production line.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a simple structure, detection speed are fast, detect the eccentric shaft that the precision is high and examine utensil. The utility model discloses a concrete technical scheme as follows:
an eccentric shaft detection tool is used for detecting an eccentric shaft, and the eccentric shaft comprises a first eccentric shaft, a first cam, a second eccentric shaft and a second cam. Utensil is examined to eccentric shaft includes:
a base;
the first camshaft sleeve is connected to the base, and a first shaft hole matched with the first cam is formed in the first camshaft sleeve;
the first eccentric shaft sleeve is connected to the base, a second shaft hole matched with the first eccentric shaft is formed in the first eccentric shaft sleeve, and a preset first eccentricity is reserved between the second shaft hole and the first shaft hole;
the integral type axle sleeve, be formed with in the integral type axle sleeve and link up third shaft hole and the fourth shaft hole that link up, wherein: the third shaft hole is matched with the second cam, the fourth shaft hole is matched with the second eccentric shaft, and a preset second eccentric amount is reserved between the third shaft hole and the fourth shaft hole;
the first end of the measuring strip is connected to the integrated shaft sleeve, and the second end of the measuring strip is a free end;
the altimeter is connected to the base.
In some embodiments, the eccentric shaft gauge further comprises a zero correction block connected to the base.
In some embodiments, the one-piece bushing includes a first connecting plate and a second connecting plate detachably connected together, the third axis hole being formed on the first connecting plate, and the fourth axis hole being formed on the second connecting plate.
In some embodiments, the first eccentric bushing is slidably coupled to the base plate, the first eccentric bushing being movable between a distal position distal from the first camming bushing and a proximal position proximal to the first camming bushing.
In some embodiments, the first shaft hole and the second shaft hole are provided with balls on the inner walls.
In some embodiments, a first end of the measuring strip is bolted to the integral boss and a second end of the measuring strip is formed with a flat measuring portion.
In some embodiments, the altimeter is a dial indicator.
In some embodiments, the dial indicator comprises an indicator frame, an indicator head and an indicator needle, the indicator frame is connected to the bottom plate, the indicator head is connected to the indicator frame, and the indicator needle is connected to the indicator head and can move up and down along the vertical direction.
Compare with the eccentric shaft inspection tool among the prior art, the utility model discloses simple structure, detection speed are fast, detect the precision high, and it provides detection efficiency, has reduced the detection cost.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings which are needed in the embodiments and are practical will be briefly described below and will be obvious, the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. Wherein the content of the first and second substances,
FIG. 1 is a schematic view of an eccentric shaft at a viewing angle;
FIG. 2 is a schematic view of an eccentric shaft from another perspective;
fig. 3 is a schematic view of the structure of the present invention;
fig. 4 is a schematic top view of the present invention;
fig. 5 is a schematic structural view of a base according to the present invention;
fig. 6 is a schematic structural view of a first camshaft sleeve according to the present invention;
fig. 7 is a schematic structural view of a first eccentric shaft sleeve in the present invention;
fig. 8 is a schematic structural view of the combined shaft sleeve and the measuring strip in the present invention;
fig. 9 is a left side view structural diagram of the combined shaft sleeve and the measuring strip of the present invention;
fig. 10 is a schematic top view of the combined shaft sleeve and the measuring strip according to the present invention.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The crankshaft is detected by adopting the phase instrument, so that the defects of low detection efficiency and high detection cost exist. In view of this, the utility model provides a simple structure, with low costs utensil is examined to eccentric shaft.
The present invention is particularly suitable for detecting the eccentric shaft 100 in fig. 1 and 2, and the eccentric shaft 100 includes a first eccentric shaft 101, a first cam 102, a second eccentric shaft 103 and a second cam 104.
As shown in fig. 3 to 10, the eccentric shaft testing fixture of the present invention at least comprises a base 1, a first cam shaft sleeve 2, a first eccentric shaft sleeve 3, an integrated shaft sleeve 4, a measuring bar 5 and a height gauge 6. Optionally, the utility model discloses an utensil is examined to eccentric shaft still includes zero correction block 7. Specifically, the method comprises the following steps:
the first camshaft housing 2 is coupled to the base 1, and the first camshaft housing 2 is formed with a first shaft hole 21 that matches the first cam 102. Alternatively, the first camshaft housing 2 is fixedly connected to the base 1 via bolts.
The first eccentric shaft sleeve 3 is connected to the base 1, a second shaft hole 31 matched with the first eccentric shaft 101 is formed on the first eccentric shaft sleeve 3, and a predetermined first eccentricity is provided between the second shaft hole 31 and the first shaft hole 21.
Be formed with in the integral type axle sleeve 4 and link up third shaft hole 41 and the fourth shaft hole 42 that link up and link up, wherein: the third shaft hole 41 is matched with the second cam 104, the fourth shaft hole 42 is matched with the second eccentric shaft 103, and a predetermined second eccentricity is provided between the third shaft hole 41 and the fourth shaft hole 42.
One end of the measuring strip 5 is connected to the integrated shaft sleeve 4, and the other end is a free end.
An altimeter 6 is attached to the base 1 and is used to measure the height of the free end of the measuring strip 5.
The utility model discloses in, the first eccentric volume between the size in first shaft hole 21, second shaft hole 31, third shaft hole 41 and fourth shaft hole 42, second eccentric volume between second shaft hole 31 and the first shaft hole 21, third shaft hole 41 and the fourth shaft hole 42 all use the standard qualification piece of the eccentric shaft that is detected as the benchmark to prefabricate.
In other words, if the first cam 102 and the first eccentric shaft 101 of the detected eccentric shaft can smoothly enter the first shaft hole 21 and the second shaft hole 31, the sizes of the first cam 102 and the first eccentric shaft 101 and the eccentricity therebetween are qualified, otherwise, the eccentric shaft is determined to be unqualified. Similarly, if the detected eccentric shaft includes the second cam 104, the second eccentric shaft 103, and the eccentric shaft can smoothly enter the third shaft hole 41 and the fourth shaft hole 42, the sizes of the second cam 104 and the second eccentric shaft 103 and the eccentricity therebetween are acceptable, and otherwise, the eccentric shaft is determined to be unacceptable.
The altimeter 6 is calibrated in zero position before the eccentric shaft to be detected is detected. Optionally, for the convenience of zero calibration, it is optional, the utility model discloses still including connecting zero correction piece 7 on the bottom plate. When the pointer of the altimeter 6 hits the upper end face of the zero correction block 7, the reading of the altimeter 6 is zero.
Hereinafter, we will continue to refer to fig. 3 and 4 to describe the specific working process of the eccentric shaft testing tool of the present invention by way of example:
step one, the first eccentric shaft 101 and the first cam 102 of the detected eccentric shaft 100 face the first shaft hole 21 on the first cam shaft sleeve 2 to be sleeved inwards, if the first eccentric shaft 101 and the first cam 102 can be sleeved into the second shaft hole 31 and the first shaft hole 21 respectively, the sizes of the first cam 102 and the first eccentric shaft 101 and the eccentricity between the first cam 102 and the first eccentric shaft 101 are qualified, and the step two is performed. Otherwise, the eccentric shaft 100 is determined to be defective, and the current detection of the eccentric shaft 100 is stopped.
After the detection in the step one, the eccentric shaft 100 currently being detected is fixed to the first camshaft housing 2 and the first eccentric shaft housing 3.
Step two, sleeving the third shaft hole 41 on the integrated shaft sleeve 4 towards the second eccentric shaft 103 of the eccentric shaft 100, and if the second eccentric shaft 103 and the second cam 104 can be respectively sleeved into the fourth shaft hole 42 and the third shaft hole 41, indicating that the sizes of the second eccentric shaft 103 and the second cam 104 and the eccentricity between the two are qualified, and entering step three. Otherwise, the eccentric shaft 100 is determined to be defective, and the current detection of the eccentric shaft 100 is stopped.
After the detection in the second step, the size and the eccentricity of the eccentric shaft 100 currently detected are considered to be qualified. At this point, the free end of the measuring strip 5 extends beyond the height gauge 6.
And step three, moving the pointer of the height gauge 6 to the free end of the measuring bar 5 to measure the height of the free end of the measuring bar 5. The value of the phase angle of the eccentric shaft 100 to be detected can be obtained on the basis of the height value of the free end of the measuring bar 5.
Optionally, the height of the null correction block 7 is adaptively adjusted so that: when the eccentric shaft to be detected is a standard component, the free end of the measuring bar 5 is just positioned on the same horizontal plane with the top end surface of the zero correction block 7, namely: altimeter 6 reads zero. Thus, the larger the absolute value of the reading of altimeter 6 (i.e., the greater the degree to which the free end of bar 5 is offset from the top face of null corrector block 7), the larger the phase angle of eccentric shaft 100 currently being detected, and conversely, the smaller the phase angle.
It is easy to imagine that there is a determined numerical relationship between the reading of the altimeter 6 and the phase angle of the eccentric shaft 100 being detected, which can be characterized by a determined quantitative relationship (or functional relationship), namely: based on the reading of the current altimeter 6, the phase angle of the eccentric shaft 100 currently detected can be obtained.
In order to obtain the phase angle value quickly, in some embodiments, the numerical correspondence between the reading of the altimeter and the phase angle of the eccentric shaft is pre-written in a mapping table. After the reading of the altimeter is obtained, the corresponding phase angle value is quickly obtained by searching the mapping table.
It is visible, the utility model discloses a measuring strip 5 converts the angle detection into the altitude mixture control and detects, has simplified the detection degree of difficulty. In addition, the slight change of the phase angle brings about a significant change of the height value of the free end of the measuring bar 5, that is, the measuring bar 5 amplifies the detection amount, so that the detection accuracy of the phase angle can be greatly improved.
Of course, theoretically, the longer the length of the measuring bar 5, the higher the accuracy of the measurement of the phase angle. However, in order to prevent the bending deformation of the measuring strip 5 caused by too long length, the length of the measuring strip 5 needs to be adaptively selected in the specific embodiment.
Alternatively, as shown in fig. 9, the integrated boss 4 includes a first connecting plate and a second connecting plate detachably connected together, a third shaft hole 41 is formed on the first connecting plate, and a fourth shaft hole 42 is formed on the second connecting plate. The first connecting plate and the second connecting plate are detachably connected together through bolts.
Alternatively, the first eccentric shaft bushing 3 is slidably attached to the base plate 1, the first eccentric shaft bushing 3 being movable between a remote position, which is remote from the first camshaft bushing 2, and an adjacent position, which is adjacent to the first camshaft bushing 2. By slidably connecting the first eccentric shaft sleeve 3 to the base plate 1, in step one of the detection process:
firstly, after the first eccentric shaft sleeve 3 is moved to a far position, the first cam 102 is sleeved into the first shaft hole 21, if the first cam 102 can not be sleeved, the detection is directly finished, and the detection is determined to be unqualified. Otherwise, the first eccentric shaft sleeve 3 is moved toward the approaching position, and whether the first eccentric shaft 101 can smoothly enter the second shaft hole 31 is observed.
Alternatively, as shown in fig. 4, in order to reduce friction between the detected eccentric shaft 100 and the first and second shaft holes 21 and 31, balls are disposed on inner walls of the first and second shaft holes 21 and 31.
Optionally, as shown in fig. 3, the height gauge 6 is a dial gauge, and includes a gauge stand 61, a gauge head 62 and a gauge needle 63, where the gauge stand 61 is connected to the bottom plate 1, the gauge head 62 is connected to the gauge stand 61, and the gauge needle 63 is connected to the gauge head 62 and can move up and down in a vertical direction to realize touching of a free end of the measuring bar 5. Alternatively, as shown in fig. 10, a first end of the measuring bar 5 is screwed to the integrated boss via a bolt, and a second end of the measuring bar 5 is formed with a flat measuring portion.
The invention has been described above with a certain degree of particularity and detail. It will be understood by those of ordinary skill in the art that the description of the embodiments is merely exemplary and that all changes that may be made without departing from the true spirit and scope of the present invention are intended to be within the scope of the present invention. The scope of the invention is defined by the appended claims rather than by the foregoing description of the embodiments.
Claims (8)
1. An eccentric shaft detection tool is used for detecting an eccentric shaft, wherein the eccentric shaft comprises a first eccentric shaft, a first cam, a second eccentric shaft and a second cam, and the eccentric shaft detection tool is characterized by comprising:
a base;
the first camshaft sleeve is connected to the base, and a first shaft hole matched with the first cam is formed in the first camshaft sleeve;
the first eccentric shaft sleeve is connected to the base, a second shaft hole matched with the first eccentric shaft is formed in the first eccentric shaft sleeve, and a preset first eccentricity is reserved between the second shaft hole and the first shaft hole;
the integral type axle sleeve, be formed with in the integral type axle sleeve and link up third shaft hole and the fourth shaft hole that link up, wherein: the third shaft hole is matched with the second cam, the fourth shaft hole is matched with the second eccentric shaft, and a preset second eccentric amount is reserved between the third shaft hole and the fourth shaft hole;
the first end of the measuring strip is connected to the integrated shaft sleeve, and the second end of the measuring strip is a free end; and
the altimeter is connected to the base.
2. The eccentric shaft test tool of claim 1, further comprising a zero adjustment block coupled to the base.
3. The eccentric shaft testing fixture of claim 1, wherein said integral bushing comprises a first connecting plate and a second connecting plate detachably connected together, said third axis hole being formed in said first connecting plate, and said fourth axis hole being formed in said second connecting plate.
4. The eccentric shaft test tool of claim 1, wherein said first eccentric shaft bushing is slidably attached to said base, said first eccentric shaft bushing being movable between a distal position away from said first cam bushing and a proximal position adjacent to said first cam bushing.
5. The eccentric shaft testing fixture of claim 1, wherein the first shaft hole and the second shaft hole are provided with balls on inner walls thereof.
6. The eccentric shaft inspection tool according to claim 1, wherein a first end of the measuring bar is screwed to the integrated sleeve via a bolt, and a second end of the measuring bar is formed with a flat measuring portion.
7. The eccentric shaft gauge according to claim 1, wherein the height gauge is a dial gauge.
8. The eccentric shaft testing fixture according to claim 7, wherein the dial indicator comprises an indicator frame, an indicator head and an indicator needle, the indicator frame is connected to the base, the indicator head is connected to the indicator frame, and the indicator needle is connected to the indicator head and can move up and down in the vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020716476.6U CN211824230U (en) | 2020-05-06 | 2020-05-06 | Eccentric shaft detection tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020716476.6U CN211824230U (en) | 2020-05-06 | 2020-05-06 | Eccentric shaft detection tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211824230U true CN211824230U (en) | 2020-10-30 |
Family
ID=73021648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020716476.6U Expired - Fee Related CN211824230U (en) | 2020-05-06 | 2020-05-06 | Eccentric shaft detection tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211824230U (en) |
-
2020
- 2020-05-06 CN CN202020716476.6U patent/CN211824230U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201030 Termination date: 20210506 |
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| CF01 | Termination of patent right due to non-payment of annual fee |