CN115962886A - Centroid measuring tool and centroid measuring method - Google Patents
Centroid measuring tool and centroid measuring method Download PDFInfo
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- CN115962886A CN115962886A CN202310007396.1A CN202310007396A CN115962886A CN 115962886 A CN115962886 A CN 115962886A CN 202310007396 A CN202310007396 A CN 202310007396A CN 115962886 A CN115962886 A CN 115962886A
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Abstract
The invention discloses a centroid measuring tool and a centroid measuring method. This frock includes: the top of the lifting frame is provided with a lifting hole for enabling lifting equipment to penetrate through to lift or put down the lifting frame; an eccentric groove is formed in the bottom of the lifting frame; an adjusting screw; the adjusting screw is used for penetrating the eccentric groove to fixedly connect the lifting frame with the workpiece to be measured; wherein the adjusting screw can move in the eccentric groove; the level gauge is arranged at the top of the side surface of the measured workpiece and used for judging whether the measured workpiece is in a horizontal state, and when the measured workpiece is judged to be in the horizontal state, the midpoint of the axis of the measured workpiece is considered as a theoretical mass center G; when the measured workpiece is judged to be in a non-horizontal state, the lifting frame is moved, the adjusting screw moves relative to the eccentric groove and stops moving until the level meter displays that the measured workpiece is in a horizontal state, and the intersection point of the center line of the lifting frame and the axis of the measured workpiece is the actual mass center; the measuring tool is simple in structure, and can measure the measured workpiece for multiple frequencies.
Description
Technical Field
The invention relates to the technical field of centroid measurement, in particular to a centroid measurement tool and a centroid measurement method.
Background
The parts of the rotary structure, most of which have the requirement of axial centroid measurement. In the prior art, most of devices for measuring the mass center are special testing devices for electromechanical integration, the measuring precision is high, the purchase quantity is generally small, the operation is relatively complex, and a specially-assigned person is required to carry out testing. Part of product parts need high-frequency measurement, the requirement on the accuracy of mass center measurement data is low, the measurement of the parts is carried out by using special high-accuracy measurement equipment, limited equipment resources can be occupied, and the measurement of multiple frequencies can cause certain damage to the equipment.
The method aims at solving the problems that in the prior art, the measured workpiece with low requirement on the centroid measurement precision is measured by using high-precision measurement equipment, limited equipment resources can be occupied, and the measured workpiece is measured by multiple frequencies, so that certain damage can be caused to the high-precision measurement equipment.
Disclosure of Invention
The embodiment of the invention provides a centroid measuring tool and a centroid measuring method, and aims to solve the problems that in the prior art, a high-precision measuring device is used for measuring a workpiece to be measured with low centroid measuring precision requirement, limited device resources are occupied, and the high-precision measuring device is damaged to a certain extent when the workpiece to be measured is measured for multiple times.
In order to achieve the above object, in one aspect, the present invention provides a centroid measuring tool, which includes: the lifting frame is provided with a lifting hole at the top part and used for enabling lifting equipment to penetrate to lift or put down the lifting frame; an eccentric groove is formed in the bottom of the lifting frame; an adjusting screw; the adjusting screw is used for fixedly connecting the lifting frame with a workpiece to be measured through the eccentric groove; wherein the adjusting screw is movable within the eccentric slot; the level gauge is arranged on the top of the side surface of the workpiece to be measured.
Optionally, the workpiece to be measured is of a revolving body structure, and a side surface of the workpiece to be measured is fixedly connected with the bottom of the lifting frame; the lifting frame is of an axisymmetric structure.
Optionally, the lifting frame includes: a first lifting part and a second lifting part; the first hoisting part is positioned on the central line of the second hoisting part; the bottom of the first lifting part is fixedly connected with the top of the second lifting part.
Optionally, the first lifting portion is provided with the through lifting hole; the bottom of the second lifting part is provided with the penetrating eccentric groove.
Optionally, the length of the eccentric groove is greater than twice the diameter of the adjusting screw.
On the other hand, the invention provides a method for measuring the mass center, which adopts the mass center measuring tool to fix a workpiece to be measured, and comprises the following steps: fixedly connecting the lifting frame with the workpiece to be measured through an adjusting screw; wherein the adjusting screw is positioned on the center line of the lifting frame; the connected measured workpiece and the lifting frame are lifted through lifting equipment, a level gauge is placed at the top of the side surface of the lifted measured workpiece, and whether the measured workpiece is in a horizontal state or not is judged; when the workpiece to be measured is judged to be in a horizontal state, the middle point of the axis of the workpiece to be measured is considered as a theoretical center of mass G; calculating the distance L from the theoretical mass center to the end surface of the workpiece to be measured; when the measured workpiece is judged to be in a non-horizontal state, moving a lifting frame, enabling an adjusting screw to move relative to the eccentric groove, stopping when the level meter displays that the measured workpiece is in a horizontal state, and enabling an intersection point of a center line of the lifting frame and an axis of the measured workpiece to be an actual mass center G1; and measuring the moving distance delta of the adjusting screw through a ruler, and calculating the distance L1 from the actual mass center to the end surface of the workpiece to be measured according to the delta and the L.
Optionally, when it is determined that the workpiece to be measured is in a non-horizontal state, moving the lifting frame to move the adjusting screw relative to the eccentric groove includes: when the workpiece to be measured is judged to be inclined rightwards, the lifting frame is moved rightwards, and the adjusting screw moves leftwards relative to the eccentric groove; when the workpiece to be detected is judged to be inclined towards the left, the lifting frame is moved towards the left, and the adjusting screw moves towards the right relative to the eccentric groove.
Optionally, the calculation formula of L1 is: l1= L ± δ.
The invention has the beneficial effects that:
the invention provides a center of mass measuring tool and a measuring method, wherein the measuring tool comprises: the lifting frame is provided with a lifting hole at the top part and used for enabling lifting equipment to penetrate to lift or put down the lifting frame; an eccentric groove is formed in the bottom of the lifting frame; an adjusting screw; the adjusting screw is used for penetrating through the eccentric groove to fixedly connect the lifting frame with a workpiece to be measured; wherein the adjusting screw is movable within the eccentric slot; the level gauge is arranged on the top of the side surface of the workpiece to be measured. The measuring tool is simple in structure and can measure the workpiece to be measured frequently.
Drawings
Fig. 1 is a schematic structural diagram of a centroid measuring tool according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a centroid measuring tool and a workpiece to be measured according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a workpiece under test in a horizontal state according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram illustrating that an adjusting screw is not moved when a workpiece to be measured is in a non-horizontal state according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of an adjusting screw after the adjusting screw moves when the workpiece to be measured is in a non-horizontal state according to an embodiment of the present invention;
fig. 6 is a flowchart of a centroid measuring method according to an embodiment of the present invention.
Description of the symbols:
the device comprises a lifting frame-1, an adjusting screw-2, an eccentric groove-3, a lifting hole-4, a level gauge-5, a workpiece to be detected-6, a first lifting part-11 and a second lifting part-12.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The parts of the rotary structure have the requirement of axial centroid measurement. In the prior art, most of devices for measuring the mass center are special testing devices for electromechanical integration, the measuring precision is high, the purchase quantity is generally small, the operation is relatively complex, and a specially-assigned person is required to carry out testing. Part of product parts need high-frequency measurement, the requirement on the accuracy of mass center measurement data is low, the measurement of the parts is carried out by using special high-accuracy measurement equipment, limited equipment resources can be occupied, and the measurement of multiple frequencies can cause certain damage to the equipment.
Therefore, the present invention provides a centroid measuring tool, fig. 1 is a schematic structural diagram of the centroid measuring tool provided in the embodiment of the present invention, and fig. 2 is a schematic structural diagram of the centroid measuring tool and the workpiece to be measured provided in the embodiment of the present invention; as shown in fig. 1 and 2, the apparatus includes:
1. the lifting frame comprises a lifting frame 1, wherein a lifting hole 4 is formed in the top of the lifting frame 1 and used for enabling lifting equipment to penetrate to lift or put down the lifting frame 1; an eccentric groove 3 is formed in the bottom of the lifting frame 1;
specifically, the lifting frame 1 is an axisymmetric structure, and the lifting frame 1 includes: a first lifting part 11 and a second lifting part 12; the first lifting part 11 is located on the central line of the second lifting part 12; the bottom of the first lifting part 11 is fixedly connected with the top of the second lifting part 12. The lifting frame 1 is of an integrated structure.
The first hoisting part 11 is provided with the hoisting hole 4 penetrating therethrough; the eccentric groove 3 is provided at the bottom of the second lifting portion 12.
2. An adjusting screw 2; the adjusting screw 2 is used for fixedly connecting the lifting frame 1 with a workpiece 6 to be measured through the eccentric groove 3; wherein the adjusting screw 2 is movable in the eccentric groove 3;
specifically, the workpiece 6 to be measured is of a revolving body structure, and the side surface of the workpiece 6 to be measured is fixedly connected with the bottom of the lifting frame 1; the length of the eccentric groove 3 is greater than twice the diameter of the adjusting screw 2, so that the adjusting screw 2 can be moved in the eccentric groove 3.
The level gauge 5 is arranged on the top of the side surface of the workpiece 6 to be measured and used for measuring whether the workpiece 6 to be measured is in a horizontal state.
The centroid measuring tool is simple in structure and convenient to operate.
Fig. 6 is a flowchart of a method for measuring a centroid according to an embodiment of the present invention, as shown in fig. 6, the method includes:
s101, fixedly connecting a lifting frame 1 with a workpiece 6 to be measured through an adjusting screw 2; wherein, the adjusting screw 2 is positioned on the central line of the lifting frame 1; namely, the first lifting part 11 and the adjusting screw 2 are both on the center line of the lifting frame 1.
S102, hoisting the connected workpiece to be detected 6 and the hoisting frame 1 by using hoisting equipment, placing the level meter 5 on the top of the side surface of the hoisted workpiece to be detected 6, and judging whether the workpiece to be detected 6 is in a horizontal state;
specifically, the hoisting equipment passes through the hoisting hole 4, the hoisting frame 1 is hoisted, and the hoisting frame 1 and the workpiece 6 to be measured are connected through the adjusting screw 2, so that the hoisting frame 1 can be hoisted together with the workpiece 6 to be measured. The level 5 is placed on top of the side surface of the workpiece 6 being lifted. The level 5 will display whether the workpiece 6 is level or not.
S103, when the workpiece 6 to be detected is judged to be in a horizontal state, the middle point of the axis of the workpiece 6 to be detected is considered as a theoretical mass center G; calculating the distance L from the theoretical mass center to the end surface of the measured workpiece 6;
fig. 3 is a schematic structural diagram of the workpiece 6 under test provided by the embodiment of the present invention in a horizontal state, and as shown in fig. 3, a distance from a centroid of the workpiece 6 to a right end face of the workpiece 6 is L.
S104, when the workpiece 6 to be measured is judged to be in a non-horizontal state, the adjusting screw 2 is moved in the eccentric groove 3 until the level meter 5 displays that the workpiece 6 to be measured is in a horizontal state, and the intersection point of the center line of the lifting frame 1 and the axis of the workpiece 6 to be measured is an actual mass center; the distance delta moved by the adjusting screw 2 is measured through a ruler, and the distance L1 from the actual mass center to the end face of the measured workpiece 6 is calculated according to the delta and L. Wherein, the calculation formula of L1 is as follows: l1= L ± δ.
In an alternative embodiment, when it is determined that the workpiece 6 to be measured is in a non-horizontal state, the step of moving the lifting frame 1 to move the adjusting screw 2 relative to the eccentric groove 3 comprises:
when the workpiece 6 to be measured is judged to be inclined to the right, the lifting frame 1 is moved to the right, and the adjusting screw 2 is moved to the left relative to the eccentric groove 3;
when the workpiece 6 to be detected is judged to be inclined to the left, the lifting frame 1 is moved to the left, and the adjusting screw 2 is moved to the right relative to the eccentric groove 3.
Specifically, taking the measured workpiece 6 to tilt to the right as an example:
fig. 4 is a schematic structural diagram of the adjusting screw 2 not moving when the workpiece 6 to be measured is in a non-horizontal state according to the embodiment of the present invention, as shown in fig. 4,
the theoretical centroid of the workpiece 6 under test is G, i.e. at the midpoint of the axis of the workpiece 6 under test. And at this time, according to the level 5 on the workpiece 6 to be measured, the workpiece 6 to be measured is inclined to the right, namely, in the direction of the dotted arrow in fig. 2, and the actual centroid of the workpiece 6 to be measured is G1.
The relative position between the lifting frame 1 and the workpiece 6 to be measured is adjusted through the space of the adjusting screw 2 and the eccentric groove 3 on the lifting frame 1, namely the lifting frame 1 is adjusted to move rightwards, the adjusting screw 2 moves leftwards relative to the eccentric groove 3, and when the workpiece 6 to be measured is in a horizontal state and is measured by the level gauge 5, the lifting frame 1 stops moving.
Fig. 5 is a schematic structural diagram of the measured workpiece 6 provided in the embodiment of the present invention after the adjusting screw 2 is moved when the workpiece is in a non-horizontal state, as shown in fig. 5:
and measuring the distance delta between the adjusting screw 2 and the center line of the lifting frame 1 through a ruler, namely the distance delta between the center line of the adjusting screw 2 and the center line of the lifting frame 1, and calculating the distance L1 from the actual mass center to the right end surface of the measured workpiece 6 according to the delta and L. L1= L- δ.
Similarly, when the workpiece 6 to be measured inclines to the left, the lifting frame 1 is adjusted to move to the left, the adjusting screw 2 is enabled to move to the right relative to the eccentric groove 3, the distance delta between the adjusting screw 2 after moving and the center line of the lifting frame 1 is measured through the straight ruler, namely the distance delta between the center line of the adjusting screw 2 and the center line of the lifting frame 1, and the distance L1 from the actual mass center to the right end face of the workpiece 6 to be measured is calculated according to the delta and L. L1= L + δ.
The invention has the beneficial effects that:
the invention provides a center of mass measuring tool and a measuring method, wherein the measuring tool comprises: the lifting frame comprises a lifting frame 1, wherein a lifting hole 4 is formed in the top of the lifting frame 1 and used for enabling lifting equipment to penetrate to lift or put down the lifting frame 1; an eccentric groove 3 is formed in the bottom of the lifting frame 1; an adjusting screw 2; the adjusting screw 2 is used for penetrating through the eccentric groove 3 to fixedly connect the lifting frame 1 with a workpiece 6 to be measured; wherein the adjusting screw 2 is movable in the eccentric groove 3; a level 5, wherein the level 5 is arranged on the top of the side surface of the workpiece 6 to be measured. The measuring tool is simple in structure and can measure the workpiece 6 to be measured at multiple frequencies.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a frock is measured to centre of mass which characterized in that includes:
the lifting frame is provided with a lifting hole at the top part and used for enabling lifting equipment to penetrate to lift or put down the lifting frame; an eccentric groove is formed in the bottom of the lifting frame;
an adjusting screw; the adjusting screw is used for fixedly connecting the lifting frame with a workpiece to be measured through the eccentric groove; wherein the adjustment screw is movable within the eccentric slot;
the level gauge is arranged on the top of the side surface of the workpiece to be measured.
2. The tooling of claim 1, wherein:
the workpiece to be detected is of a revolving body structure, and the side surface of the workpiece to be detected is fixedly connected with the bottom of the lifting frame;
the lifting frame is of an axisymmetric structure.
3. The tooling of claim 2, wherein:
the lifting frame comprises: a first lifting part and a second lifting part; the first hoisting part is positioned on the central line of the second hoisting part; the bottom of the first lifting part is fixedly connected with the top of the second lifting part.
4. The tooling of claim 3, wherein:
the first hoisting part is provided with the through hoisting hole;
the bottom of the second lifting part is provided with the through eccentric groove.
5. The tooling of claim 4, wherein:
the length of the eccentric groove is more than twice the diameter of the adjusting screw.
6. A mass center measuring method for fixing a workpiece to be measured by using a mass center measuring tool according to any one of claims 1 to 5, comprising:
fixedly connecting the lifting frame with the workpiece to be measured through an adjusting screw; wherein the adjusting screw is positioned on the center line of the lifting frame;
the connected measured workpiece and the lifting frame are lifted by lifting equipment, a level meter is placed at the top of the side surface of the lifted measured workpiece, and whether the measured workpiece is in a horizontal state or not is judged;
when the workpiece to be measured is judged to be in a horizontal state, the middle point of the axis of the workpiece to be measured is considered as a theoretical center of mass G; calculating the distance L from the theoretical mass center to the end surface of the workpiece to be measured;
when the measured workpiece is judged to be in a non-horizontal state, moving a lifting frame, enabling an adjusting screw to move relative to the eccentric groove, stopping when the level meter displays that the measured workpiece is in a horizontal state, and enabling an intersection point of a center line of the lifting frame and an axis of the measured workpiece to be an actual mass center G1; and measuring the distance delta from the moved adjusting screw to the center line of the lifting frame through a ruler, and calculating the distance L1 from the actual mass center to the end surface of the workpiece to be measured according to the delta and the L.
7. The method of claim 6, wherein: when the workpiece to be detected is judged to be in a non-horizontal state, the lifting frame is moved, and the moving of the adjusting screw relative to the eccentric groove comprises the following steps:
when the workpiece to be measured is judged to be inclined rightwards, the lifting frame is moved rightwards, and the adjusting screw moves leftwards relative to the eccentric groove;
when the workpiece to be detected is judged to be inclined towards the left, the lifting frame is moved towards the left, and the adjusting screw moves towards the right relative to the eccentric groove.
8. The method of claim 6, wherein:
the calculation formula of the L1 is as follows: l1= L ± δ.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310007396.1A CN115962886A (en) | 2023-01-04 | 2023-01-04 | Centroid measuring tool and centroid measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310007396.1A CN115962886A (en) | 2023-01-04 | 2023-01-04 | Centroid measuring tool and centroid measuring method |
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| Publication Number | Publication Date |
|---|---|
| CN115962886A true CN115962886A (en) | 2023-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310007396.1A Pending CN115962886A (en) | 2023-01-04 | 2023-01-04 | Centroid measuring tool and centroid measuring method |
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| CN (1) | CN115962886A (en) |
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- 2023-01-04 CN CN202310007396.1A patent/CN115962886A/en active Pending
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