CN109579674B - Parallelism testing device and method - Google Patents
Parallelism testing device and method Download PDFInfo
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- CN109579674B CN109579674B CN201811363253.XA CN201811363253A CN109579674B CN 109579674 B CN109579674 B CN 109579674B CN 201811363253 A CN201811363253 A CN 201811363253A CN 109579674 B CN109579674 B CN 109579674B
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- expansion sleeve
- parallelism
- measured
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- hand wheel
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
Abstract
The invention relates to a parallelism testing device and a parallelism testing method. The product to be measured is assembled on the expansion sleeve, the hand wheel is rotated, the movable cone driven by the front end of the screw rod moves back and forth to extrude the expansion sleeve, so that the expansion sleeve is tensioned and loosened, when the expansion sleeve is tensioned, the bulges at the two ends of the expansion sleeve can be supported on the two sides of the center of the product, the product is uniformly supported from the inside, the center of the product is aligned, the eccentricity phenomenon cannot occur, the part with the parallelism to be measured is downwards opposite to the base, the measuring block slides into the lower part of the part to be measured of the base through the dovetail groove, and the measuring surface of the measuring block is guaranteed to be attached to the part to be measured through fine processing, namely the parallelism is qualified. The device and the method can detect the parallelism of the parts on the outer surface of the product with the main structure of a revolving body, and are convenient, quick and economical.
Description
Technical Field
The invention relates to a parallelism testing device and a parallelism testing method, and belongs to the technical field of parallelism detection.
Background
The main structure of a certain product is a revolving body, special-shaped parts are arranged on the outer surface of the revolving body, and the special-shaped parts have parallelism requirements relative to the center of the revolving body, so that the parallelism of the parts on the manufactured product needs to be measured and tested, and whether the parallelism meets the requirements is judged.
In the prior art, the position and the parallelism of a part on a product can be detected by a three-coordinate measuring instrument, but the measuring period and the cost are high, and a convenient, quick and economic detecting device needs to be designed to detect the position precision of the part at the same time.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a parallelism testing device and a parallelism testing method, which can detect the parallelism of parts on the outer surface of a product with a main structure of a revolving body, are convenient, quick and economical.
In order to achieve the purpose of the invention, the following technical scheme is provided.
A parallelism testing device mainly comprises a hand wheel, a support, a screw rod, a fixed cone, an expansion sleeve, a movable cone, a base and a measuring block.
The hand wheel is composed of a stud with external threads and a wheel disc, and the stud can be rotated by the rotation of the wheel disc;
the rear end of the screw body is provided with an internal thread pore passage so that a stud of a hand wheel can extend into the thread for connection, and the front end of the body is provided with a bulge with the inner diameter smaller than that of the body and used for installing a movable cone;
one end of the fixed cone is an inclined plane and is matched with the inner end surface of the expansion sleeve;
the peripheral surface of the movable vertebral body is an inclined surface and is matched with the inner end surface of the expansion sleeve;
the expansion sleeve is internally provided with an expansion joint, and can be slightly deformed when being extruded.
The surface of the base is a horizontal plane, and a dovetail groove is arranged on the surface of the base and used for placing and moving the measuring block.
The measuring block is designed according to the shape matching of the part to be measured, and the parallelism of the measuring surface is guaranteed through fine processing.
The bottom of the support is fixedly arranged on the horizontal plane of the base, the rear part of the fixed cone body penetrates through the support and is fixed on the support, the rear end of the fixed cone body, which is positioned on one side of the support, is fixedly connected with the hand wheel, the front end, which is positioned on the other side of the support, extends into the expansion sleeve and is in matched connection with the inner inclined plane of the rear end surface of the expansion sleeve, the peripheral surface of the movable cone body is in matched connection with the inner inclined plane of the front end surface of the expansion sleeve, the screw rod penetrates through the middle pore passages of the fixed cone body and the expansion sleeve, the inner threaded pore passage at the rear end of the screw rod body is in matched connection with the outer thread of the stud; the central line of an integral structure formed by the screw, the fixed cone, the expansion sleeve and the movable cone is kept horizontal and is parallel to the horizontal base, a product to be measured is sleeved and fixed on the integral structure, a part with the parallelism to be measured is downwards opposite to the base, and the parallelism is measured through the measuring block.
A parallelism testing method adopts a device which is the parallelism testing device of the invention, and comprises the following steps: assembling a revolving body main body of a product to be measured on an expansion sleeve, rotating a hand wheel to enable a stud on the hand wheel to move back and forth to drive a screw rod to move, keeping a fixed cone body still, driving a movable cone body to move back and forth to extrude the expansion sleeve, thereby realizing the tensioning and loosening of the expansion sleeve, when the expansion sleeve is tensioned, two ends of the expansion sleeve can be supported on two sides of the center of the product, uniformly supporting the product from the inside, aligning the center of the product, avoiding the eccentric phenomenon, enabling a part with parallelism to be measured to face downwards to a base, enabling a measuring block to slide stably into the part to be measured of the base through a dovetail groove, ensuring the parallelism when the measuring block can be attached to the part to be measured through fine processing, namely ensuring the parallelism to be qualified, if the part to be measured is positioned on other parts on the surface of the product, rotating the hand wheel to loosen the expansion sleeve, adjusting the part to be measured on other parts on the product, and rotating the hand wheel to enable the expansion sleeve to be tensioned, and placing the expansion sleeve into a measuring block matched with the shape of the part to be measured for measurement.
Advantageous effects
The invention provides a parallelism testing device and a parallelism testing method, which can be used for detecting the parallelism of parts on the outer surface of a product with a main structure of a revolving body, and are convenient, quick and economical.
Drawings
Fig. 1 is a schematic structural diagram of a product part to be tested by the parallelism testing apparatus in embodiment 1.
Fig. 2 is a schematic structural diagram of the parallelism testing apparatus in embodiment 1.
FIG. 3 is a schematic view of the parallelism testing apparatus described in example 1 for testing part No. 2.
Wherein, 1-hand wheel, 2-support, 3-screw rod, 4-fixed centrum, 5-expansion sleeve, 6-movable centrum, 7-base, 8-measuring block
Detailed Description
The invention is described in detail below with reference to the drawings and specific examples, but the invention is not limited thereto.
Example 1
The main structure of a certain product is a revolving body, three special-shaped parts are arranged on the revolving body, the parallelism of the three special-shaped parts is 0.2 relative to the center of the revolving body, and the three special-shaped parts have the following position relation: no. 1 part and No. 3 part are located one side of the solid of revolution, and No. 2 part is located the opposite side, need to detect according to the product requirement the depth of parallelism and the position of part. The part 2 is an interface between the product reservation and the outside, the part 1 and the part 3 are mounting supports of the same part, the part is an important part of the product, the mounting position precision of the part directly influences the product quality, the structure of the product is shown in figure 1, wherein the left side is a left view, and the right side is a front view.
A parallelism testing device is mainly composed of a hand wheel 1, a support 2, a screw rod 3, a fixed cone 4, an expansion sleeve 5, a movable cone 6, a base 7 and a measuring block 8, as shown in figure 2.
The hand wheel 1 is composed of a stud with an external thread and a wheel disc, and the stud can be rotated by the rotation of the wheel disc;
the rear end of the screw 3 body is provided with an internal thread pore channel so that a stud of the hand wheel 1 extends into the thread for connection, and the front end of the body is provided with a bulge with the inner diameter smaller than that of the body for installing a movable cone 6;
one end of the fixed cone 4 is an inclined plane and is matched with the inner end surface of the expansion sleeve 5;
the peripheral surface of the movable vertebral body 6 is an inclined surface and is matched with the inner end surface of the expansion sleeve 5;
the inner parts of the two ends of the expansion sleeve 5 are inclined planes, the outer parts of the two ends are bulges, the heights of the bulges are consistent, the expansion sleeve 5 is positioned on the same horizontal plane and used for supporting a main body of a product revolving body structure, and expansion joints are arranged in the expansion sleeve 5 and can generate micro deformation when the expansion sleeve 5 is extruded.
The surface of the base 7 is a horizontal plane, and a dovetail groove is arranged on the surface of the base and used for placing and moving the measuring block 8.
The measuring block 8 is designed according to the shape matching of the part to be measured, and the parallelism of the measuring surface is guaranteed through fine processing.
The bottom of a support 2 is fixedly arranged on the horizontal plane of a base 7, the rear part of a fixed cone 4 penetrates through the support 2 and is fixed on the support 2, the rear end of the fixed cone 4 positioned on one side of the support 2 is fixedly connected with a hand wheel 1, the front end positioned on the other side of the support 2 extends into an expansion sleeve 5 and is matched and connected with an internal inclined plane of the rear end surface of the expansion sleeve 5, the peripheral surface of a movable cone 6 is matched and connected with an internal inclined plane of the front end surface of the expansion sleeve 5, a screw rod 3 penetrates through a middle pore passage of the fixed cone 4 and the expansion sleeve 5, an internal thread pore passage at the rear end of a screw rod 3 body is matched and connected with an external thread of a stud on the hand wheel 1, and a bulge at the front end of the screw rod; the central line of the whole structure formed by the screw 3, the fixed cone 4, the expansion sleeve 5 and the movable cone 6 is kept horizontal and is parallel to the horizontal base 7, a product to be measured is sleeved and fixed on the whole structure, a part to be measured in parallelism is downwards opposite to the base 7, and the parallelism is measured through the measuring block 8.
A parallelism testing method adopts a device as the parallelism testing device of the embodiment, and comprises the following steps: assembling a revolving body main body of a product to be measured on an expansion sleeve 5, rotating a hand wheel 1 to enable a stud on the hand wheel 1 to move back and forth to drive a screw rod 3 to move, keeping a fixed cone 4 still, driving a movable cone 6 driven by the front end of the screw rod 3 to move back and forth to extrude the expansion sleeve 5, thereby realizing the expansion and the loosening of the expansion sleeve 5, when the expansion sleeve 5 is tightened, two bulges at two ends can be supported at two sides of the center of the product, uniformly supporting the product from the inside, aligning the center of the product, and avoiding the eccentric phenomenon, a No. 2 part to be measured with parallelism is downwards opposite to a base 7, at the moment, a measuring block 8 matched with the shape of the No. 2 part is adopted, two measuring surfaces of the measuring block 8 ensure that the parallelism is 0.01 through fine processing, and stably slide into the lower part to be measured of the No. 2 part 7 through a dovetail groove, when the measuring block 8 can be jointed with the part to be measured, the left side is a left view and the right side is a main view.
When needing to measure and be located product surface other position awaiting measuring 1 part and No. 3 part, rotatory hand wheel 1 makes the cover 5 that rises loosen, and adjustment 1 part and No. 3 part rotate to just to base 7 downwards, and rotatory hand wheel 1 makes the cover 5 that rises and tightly, puts into the measuring block 8 that matches 1 part and No. 3 shape respectively and measures, and the precision of measuring block 8 is 0.01, when it can with 1 part and No. 3 part laminating, promptly the depth of parallelism of part is qualified.
Claims (2)
1. The utility model provides a depth of parallelism testing arrangement which characterized in that: the device mainly comprises a hand wheel (1), a support (2), a screw (3), a fixed cone (4), an expansion sleeve (5), a movable cone (6), a base (7) and a measuring block (8);
the hand wheel (1) is composed of a stud with external threads and a wheel disc, and the stud can be rotated by the rotation of the wheel disc;
the rear end of the screw rod (3) body is provided with an internal thread pore canal so that a stud of the hand wheel (1) extends into the thread for connection, and the front end of the body is provided with a bulge with the inner diameter smaller than that of the body for installing a movable cone body (6);
one end of the fixed cone (4) is an inclined plane and is matched with the inner end surface of the expansion sleeve (5);
the peripheral surface of the movable vertebral body (6) is an inclined surface and is matched with the inner end surface of the expansion sleeve (5);
the inner parts of two ends of the expansion sleeve (5) are inclined planes, the outer parts of the two ends are bulges, the heights of the bulges are consistent, the expansion sleeve (5) is positioned on the same horizontal plane and is used for supporting a main body of a product revolving body structure, and an expansion joint is arranged in the expansion sleeve (5) and can generate micro deformation when the expansion sleeve (5) is extruded;
the surface of the base (7) is a horizontal plane, and a dovetail groove is formed in the surface of the base and used for placing and moving the measuring block (8);
the measuring block (8) is designed according to the shape matching of the part to be measured, and the parallelism of the measuring surface is ensured through fine processing;
the bottom of a support (2) is fixedly arranged on the horizontal plane of a base (7), the rear part of a fixed cone (4) penetrates through the support (2) and is fixed on the support (2), the rear end of the fixed cone (4) positioned on one side of the support (2) is fixedly connected with a hand wheel (1), the front end positioned on the other side of the support (2) extends into an expansion sleeve (5) and is matched and connected with an inner inclined plane of the rear end surface of the expansion sleeve (5), the peripheral surface of a movable cone (6) is matched and connected with an inner inclined plane of the front end surface of the expansion sleeve (5), a screw (3) penetrates through middle pore passages of the fixed cone (4) and the expansion sleeve (5), an inner threaded pore passage of the rear end of a screw (3) body is matched and connected with an outer thread of a stud on the hand wheel (1), and a bulge at the front end of the screw (3) body extends into a middle pore passage of the movable cone (6); the central line of the whole structure consisting of the screw (3), the fixed cone (4), the expansion sleeve (5) and the movable cone (6) is kept horizontal and is parallel to the horizontal base (7), a product to be measured is installed and fixed on the outer surface of the expansion sleeve (5), a part of the parallelism to be measured is downwards opposite to the base (7), and the parallelism is measured through the measuring block (8).
2. A parallelism testing method is characterized in that: the method adopts the device as the parallelism testing device of claim 1, and comprises the following steps: assembling a revolving body main body of a product to be measured on an expansion sleeve (5), rotating a hand wheel (1), enabling a stud on the hand wheel (1) to move back and forth to drive a screw rod (3) to move, keeping a fixed cone body (4) still, enabling a movable cone body (6) driven by the front end of the screw rod (3) to move back and forth to extrude the expansion sleeve (5), thereby realizing the tensioning and loosening of the expansion sleeve (5), when the expansion sleeve (5) is tensioned, two bulges at two ends of the expansion sleeve can be supported at two sides of the center of the product, uniformly supporting the product from the inside, aligning the center of the product, avoiding the eccentricity phenomenon, enabling a part with the parallelism to be measured to face downwards a base (7), at the moment, stably sliding a measuring block (8) into the lower part to be measured through a dovetail groove, ensuring the parallelism of a measuring surface of the measuring block (8) through fine processing, when the measuring block (8) can be attached to the part to be measured, namely the parallelism is qualified, if the part to be, and rotating the hand wheel (1) to loosen the expansion sleeve (5), adjusting the part to be measured at other parts on the product to rotate to the downward direction to be opposite to the base (7), rotating the hand wheel (1) to expand the expansion sleeve (5), and placing the expansion sleeve into a measuring block (8) matched with the shape of the part to be measured for measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811363253.XA CN109579674B (en) | 2018-11-15 | 2018-11-15 | Parallelism testing device and method |
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| CN201811363253.XA CN109579674B (en) | 2018-11-15 | 2018-11-15 | Parallelism testing device and method |
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| CN109579674A CN109579674A (en) | 2019-04-05 |
| CN109579674B true CN109579674B (en) | 2020-07-14 |
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| CN115299843B (en) * | 2022-06-17 | 2023-04-07 | 中山市微视医用科技有限公司 | Endoscope lens flatness adjusting system and using method thereof |
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