阅读说明：本技术 一种椭圆凸轮检测方法及装置 (Elliptical cam detection method and device ) 是由 刘贵彬 于 2021-09-09 设计创作，主要内容包括：本发明公开一种椭圆凸轮检测方法及装置,该装置包括底座,在底座的中央固定有定位芯轴,在底座的圆周上均匀地固定有一号杠杆指示表、二号杠杆指示表、三号杠杆指示表以及四号杠杆指示表。本发明可以检测椭圆长短轴尺寸和对称度,简单适用,只需手动垂直装入和取出椭圆凸轮,旋转椭圆凸轮便可检测出想要的数据,一次装夹完成全部数据检测,检测效率高,方法简单,操作性强、容易推广实施,能够有效地解决很多类似凸轮检测,降低生产成本。(The invention discloses an elliptical cam detection method and device, wherein the device comprises a base, a positioning mandrel is fixed in the center of the base, and a first lever indicator, a second lever indicator, a third lever indicator and a fourth lever indicator are uniformly fixed on the circumference of the base. The invention can detect the size and the symmetry of the major axis and the minor axis of the ellipse, is simple and applicable, can detect the desired data only by manually vertically installing and taking out the elliptical cam and rotating the elliptical cam, completes all data detection by one-time clamping, has high detection efficiency, simple method, strong operability and easy popularization and implementation, can effectively solve the detection of a plurality of similar cams, and reduces the production cost.)

1. The utility model provides an elliptical cam detection device, includes base (1), its characterized in that: a positioning mandrel (3) is fixed in the center of a base (1), and a first lever indicator (2), a second lever indicator (5), a third lever indicator (6) and a fourth lever indicator (7) are uniformly fixed on the circumference of the base (1).

2. The elliptical cam detection device of claim 1, wherein: four step grooves (8) that run through are evenly distributed on the base (1), and screws (9) fixedly connected with a lever indicating meter (2), a second lever indicating meter (5), a third lever indicating meter (6) and a fourth lever indicating meter (7) penetrate into each step groove (8) respectively.

3. The elliptical cam detection device of claim 1, wherein: the positioning core shaft is characterized by further comprising a long shaft gauge ring (10) and a short shaft gauge ring (11), and the center holes of the long shaft gauge ring (10) and the short shaft gauge ring (11) are in clearance fit with the positioning core shaft (3).

4. An elliptical cam detection method based on the elliptical cam detection device of any one of claims 1 to 3, characterized by comprising the steps of:

step one, checking an indicator: sleeving a short shaft gauge ring (11) on a positioning mandrel (3), wherein the diameter of the short shaft gauge ring (11) is b0, adjusting the gauge heads of a first lever indicator (2) and a third lever indicator (6) to be in surface contact with the short shaft gauge ring (11), then screwing down screws (9) below the first lever indicator (2) and the third lever indicator (6), fixing the first lever indicator (2) and the third lever indicator (6), and adjusting the marking discs of the first lever indicator (2) and the third lever indicator (6) to enable the indicating values to be 0; similarly, the short shaft gauge ring (11) is taken down, the long shaft gauge ring (10) is sleeved on the positioning mandrel (3), the diameter of the long shaft gauge ring (10) is a0, the gauge heads of the second lever indicator (5) and the fourth lever indicator (7) are adjusted to be in surface contact with the long shaft gauge ring (10), then the screws (9) below the second lever indicator (5) and the fourth lever indicator (7) are screwed, the second lever indicator (5) and the fourth lever indicator (7) are fixed, and then the scale plates of the second lever indicator (5) and the fourth lever indicator (7) are adjusted to enable the indicated values to be 0;

step two, measurement: sleeving an elliptic cam (4) to be detected on a positioning mandrel (3), and enabling a center hole of the elliptic cam (4) to be detected to be in clearance fit with the positioning mandrel (3), rotating the elliptic cam (4) to be detected, so that the major axis of the elliptic cam (4) to be detected is provided with a meter head of a second lever indicator (5) and a fourth lever indicator (7), and stopping rotating when the readings of the indicated values of the second lever indicator (5) and the fourth lever indicator (7) are changed from small to large and then reduced, wherein the phases of the major axis and the minor axis of the elliptic cam (4) to be detected are aligned with the four lever indicators, and the readings of the second lever indicator (5), the fourth lever indicator (7), the first lever indicator (2) and the third lever indicator (6) are respectively c1, c2, c3 and c4, so that: the major axis of the elliptic cam (4) to be tested is A2 a0+ c1+ c 2; and the minor axis B of the elliptic cam (4) to be tested is 2 x B0+ c3+ c 4.

5. The method of using the elliptical cam detection method and apparatus of claim 4, characterized in that: c is C1-C2; the short axis symmetry degree is D ═ c3-c 4.

Technical Field

The invention relates to an elliptical cam detection method and device, and belongs to the technical field of mechanical part detection.

Background

In the harmonic reducer, an elliptical cam is a core component of a wave generator. The existing elliptical cam detection modes are three types: 1. the method has the advantages that the manual error is large when the external diameter digital display micrometer detects; 2. the detection precision is not high and the efficiency is slow when the detection is carried out by a universal tool microscope; 3. the special detection equipment of cam appearance detects, and this kind of mode instrument input cost is big, can not detect at the production scene, and work efficiency is low and can't satisfy the required precision. As shown in fig. 4, the standard equation of the ellipse: x2/a2+ y2/b2 is 1, and the rectangular coordinate parameter equation is as follows: x is acos theta, y is bsin theta, where theta is the eccentric angle of the ellipse, so it can be known that the ellipse is a parameter curve, all nodes are, and the detection is difficult. Therefore, the existing detection technology cannot meet the requirements of batch production and use, and needs to be further improved.

Disclosure of Invention

In order to solve the technical problems, the invention provides an elliptical cam detection method and device, which have high detection efficiency and can meet the requirements of production field inspection so as to solve the defects in the prior art.

The invention is formed as follows: the elliptical cam detection device comprises a base, wherein a positioning mandrel is fixed in the center of the base, and a first lever indicator, a second lever indicator, a third lever indicator and a fourth lever indicator are uniformly fixed on the circumference of the base.

Furthermore, four through step grooves are uniformly distributed on the base, and screws fixedly connected with the first lever indicating meter, the second lever indicating meter, the third lever indicating meter and the fourth lever indicating meter penetrate into each step groove respectively.

Furthermore, the detection device also comprises a long shaft gauge ring and a short shaft gauge ring, and the central holes of the long shaft gauge ring and the short shaft gauge ring are in clearance fit with the positioning mandrel.

Meanwhile, the invention also provides an elliptical cam detection method based on the elliptical cam detection device, which comprises the following steps:

step one, checking an indicator: sleeving a short shaft gauge ring on a positioning mandrel, wherein the diameter of the short shaft gauge ring is b0, adjusting the gauge heads of a first lever indicator and a third lever indicator to be in contact with the surface of the short shaft gauge ring, then screwing down screws below the first lever indicator and the third lever indicator, fixing the first lever indicator and the third lever indicator, and adjusting the scale discs of the first lever indicator and the third lever indicator to enable the indicated values to be 0; similarly, the short shaft gauge ring is taken down, the long shaft gauge ring is sleeved on the positioning mandrel, the diameter of the long shaft gauge ring is a0, the gauge heads of the second lever indicator and the fourth lever indicator are adjusted to be in contact with the surface of the long shaft gauge ring, then screws below the second lever indicator and the fourth lever indicator are screwed, the second lever indicator and the fourth lever indicator are fixed, and the dial of the second lever indicator and the fourth lever indicator is adjusted to enable the indicated value to be 0;

step two, measurement: sleeving the elliptic cam to be detected on the positioning mandrel, and in addition, the central hole of the elliptic cam to be detected is in clearance fit with the positioning mandrel, rotating the elliptic cam to be detected, so that the meter heads of the second lever indicator and the fourth lever indicator of the long axis of the elliptic cam to be detected are enabled, when the reading values of the indicating values of the second lever indicator and the fourth lever indicator are changed from small to large and then become small, the rotation is stopped, the phases of the long axis and the short axis of the elliptic cam to be detected are aligned with the four lever indicators, at the moment, the reading values of the second lever indicator, the fourth lever indicator, the first lever indicator and the third lever indicator are respectively c1, c2, c3 and c4, and then: the major axis of the elliptic cam to be detected is A2 × a0+ c1+ c 2; and the minor axis B of the elliptic cam to be tested is 2 × B0+ c3+ c 4.

In the method, the symmetry degree of the long axis of the elliptic cam to be detected is C-C1-C2; the short axis symmetry degree is D ═ c3-c 4.

Due to the adoption of the technical scheme, the invention has the advantages that: the invention can detect the size and the symmetry of the major axis and the minor axis of the ellipse, is simple and applicable, can detect the desired data only by manually vertically installing and taking out the elliptical cam and rotating the elliptical cam, completes all data detection by one-time clamping, has high detection efficiency, simple method, strong operability and easy popularization and implementation, can effectively solve the detection of a plurality of similar cams, and reduces the production cost.

Drawings

FIG. 1 is a perspective view of a schematic structural view of the present invention;

FIG. 2 is a top view of a schematic structural diagram of the present invention;

FIG. 3 is a cross-sectional view E-E of FIG. 2:

FIG. 4 is a schematic view of a long axis gauge ring;

FIG. 5 is a schematic view of a short axis gauge ring;

fig. 6 is a schematic structural diagram of the elliptical cam to be measured.

The labels in the figures are: the device comprises a base 1, a lever indicator 2, a lever indicator I, a positioning mandrel 3, an elliptic cam to be tested 4, a lever indicator II 5, a lever indicator III 6, a lever indicator IV 7, a lever indicator IV 8, a step groove 9, a screw 9, a long axis calibration ring 10 and a short axis calibration ring 11.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.

The embodiment of the invention comprises the following steps: as shown in fig. 1 to 6, an elliptical cam detection method and device includes a base 1, a positioning core shaft 3 is fixed at the center of the base 1, and a first lever indicator 2, a second lever indicator 5, a third lever indicator 6 and a fourth lever indicator 7 are uniformly fixed on the circumference of the base 1. The equipartition has four step grooves 8 that run through on the base 1, penetrate respectively in every step groove 8 with a lever indicating table 2, No. two lever indicating tables 5, No. three lever indicating tables 6 and No. four lever indicating tables 7 fixed connection's screw 9, like this alright adjust the position of each lever indicating table on a large scale to satisfy the not unidimensional detection of the elliptical cam 4 that awaits measuring. The detection device further comprises a long shaft gauge ring 10 and a short shaft gauge ring 11, and the central holes of the long shaft gauge ring 10 and the short shaft gauge ring 11 are in clearance fit with the positioning mandrel 3.

When the elliptical cam detection device is used for detecting the elliptical cam, the following steps can be adopted:

step one, checking an indicator: sleeving a short shaft gauge ring 11 on a positioning mandrel 3, wherein the diameter of the short shaft gauge ring 11 is b0, adjusting the gauge heads of a first lever indicator 2 and a third lever indicator 6 to be in surface contact with the short shaft gauge ring 11, then screwing down screws 9 below the first lever indicator 2 and the third lever indicator 6, fixing the first lever indicator 2 and the third lever indicator 6, and adjusting the marking discs of the first lever indicator 2 and the third lever indicator 6 to enable the indicating values to be 0; similarly, the short shaft gauge ring 11 is taken down, the long shaft gauge ring 10 is sleeved on the positioning mandrel 3, the diameter of the long shaft gauge ring 10 is a0, the gauge heads of the second lever indicator 5 and the fourth lever indicator 7 are adjusted to be in surface contact with the long shaft gauge ring 10, then the screws 9 below the second lever indicator 5 and the fourth lever indicator 7 are screwed, the second lever indicator 5 and the fourth lever indicator 7 are fixed, and the marking discs of the second lever indicator 5 and the fourth lever indicator 7 are adjusted to enable the indicating values to be 0;

step two, measurement: sleeving the elliptic cam 4 to be detected on the positioning mandrel 3, and in addition, the central hole of the elliptic cam 4 to be detected is in clearance fit with the positioning mandrel 3, rotating the elliptic cam 4 to be detected, so that the gauge heads of the long-axis second lever indicator 5 and the fourth lever indicator 7 of the elliptic cam 4 to be detected are enabled to stop rotating at the moment when the reading values of the indicating values of the second lever indicator 5 and the fourth lever indicator 7 are changed from small to large and then become small, at the moment, the phases of the long axis and the short axis of the elliptic cam 4 to be detected are aligned with the four lever indicators, and at the moment, the reading values of the second lever indicator 5, the fourth lever indicator 7, the first lever indicator 2 and the third lever indicator 6 are respectively c1, c2, c3 and c4, so that: the major axis of the elliptic cam 4 to be measured is A2 × a0+ c1+ c 2; and the minor axis B of the elliptic cam 4 to be tested is 2 × B0+ c3+ c 4. The symmetry degree of the long axis of the elliptic cam 4 to be detected is C-C1-C2; the short axis symmetry degree is D ═ c3-c 4.

In conclusion, the invention can detect the sizes and the symmetry degrees of the major axis and the minor axis of the ellipse, is simple and applicable, can detect the desired data only by manually and vertically installing and taking out the elliptical cam and rotating the elliptical cam, completes all data detection by one-time clamping, has high detection efficiency, simple method, strong operability and easy popularization and implementation, can effectively solve the detection of a plurality of similar cams, and reduces the production cost.