CN115451788A - Online detection tool and detection method for large optical platform - Google Patents

Abstract

The invention discloses an online detection tool and detection method for a large-scale optical platform, belongs to the technical field of precision machinery manufacturing, and the technical problem to be solved is the online detection of the parallelism of a large-scale optical platform. The online detection tool comprises: a cantilever adjustment assembly (1), a counterweight (2), and a gauge adjustment assembly (3). The detection tooling of the present invention is used in conjunction with a marble platform with 0-grade precision to detect the parallelism of a large optical platform of 1600mm x 1700mm x 180mm. The stability of the tooling structure is good, and the detection accuracy is high, which can solve the problem of online detection of the parallelism of large optical platforms and improve processing accuracy and efficiency.

Description

An online detection tool and detection method for a large optical platform

technical field

The invention belongs to the technical field of precision machinery manufacturing, and in particular relates to an online detection tool and a detection method for a large optical platform.

Background technique

The large optical table has two notable features of large size and high precision. For an optical platform of 1600mm×1700mm×180mm, the overall flatness is required to be 0.02mm, and the parallelism is 0.02mm. The flatness of a single installation platform is 0.01, and the parallelism is 0.01. The precision is close to that of a marble platform with 0-level precision. Finishing is carried out by local grinding after high-point scraping, and online detection is a difficult problem. The longest cantilever of the existing measuring instrument is 400mm, but to realize the detection of a large optical platform, the cantilever of the measuring instrument needs to be 900mm long, so it is necessary to design and manufacture the cantilever frame of the measuring instrument, which can ensure the length of the cantilever and the stability of the cantilever, and ensure the detection process The middle data returns to zero. The present invention just solves the problem of online detection. Using the detection tooling described in the present invention in conjunction with a 0-grade precision marble platform, the tooling structure is stable and the detection returns to zero with high precision, which can solve the problem of online detection of the parallelism of large optical platforms. , Improve machining accuracy and efficiency.

Contents of the invention

The technical problem to be solved by the invention is: the online detection of the parallelism of a large optical platform belongs to the category of comparative detection. Specifically, the parallelism of the parts is detected by comparing with the 0-level precision marble platform.

In order to solve the problems of the technologies described above, the present invention proposes the following technical solutions:

An online detection tool for a large optical platform, the online detection tool includes: a cantilever adjustment assembly (1), a counterweight (2) and a gauge adjustment assembly (3); the cantilever adjustment assembly (1) includes : support frame (11), slide block (12), cantilever frame (13), locking screw (14), fixing screw (15);

The support frame (11) is a triangular structure, the bottom surface is provided with an empty knife, and the side is provided with a dovetail groove; the side of the slider (12) is provided with a dovetail groove, which is used in conjunction with the support frame (11); the cantilever The frame (13) is a triangular structure, one end of the cantilever frame (13) is fixed to the slider (12), and the other end is provided with a gap for matching with the meter adjustment assembly (3); the cantilever frame (13) can be passed through The dovetail groove slides on the support frame (11), and can be locked by a locking screw (14) after sliding to a designated position.

Further, the counterweight (2) includes two counterweights, and the middle of the two counterweights is fixedly connected by bolts and nuts.

Further, the meter adjustment assembly (3) includes: a plurality of locking screws (31), a measuring rod connector (32), a measuring rod connecting rod (33), a dial indicator (34), and a measuring rod slider (35), slider cover plate (36), gauge adjustment screw (38), cylindrical pin (39);

The slider cover (36) is fixed with the cantilever frame (13) by screws; the meter adjustment screw (38) is threadedly matched with the slider cover (36), and the adjustment of the meter adjustment screw (38) can be realized by rotation. Move up and down; the bottom of the meter adjusting screw (38) is provided with a semicircular ring groove, which is fixed with the measuring rod slider (35) by a cylindrical pin (39), and the measuring rod sliding can be realized by rotating the measuring meter adjusting screw (38). The block (35) moves up and down in the straight groove of the cantilever frame (13), and can be locked by a locking screw (31) after moving to a suitable position; Block (35) is connected and locked by another locking screw (31); the meter connecting rod (33) cooperates with the measuring rod connector (32) through a straight groove, and the other locking screw (31) ) as an axis, the connecting rod (33) can be rotated around the axis to adjust the angle and locked by the locking screw (31); the dial indicator (34) is inserted into the inner hole of the connecting rod (33) and locked by locking Screw (31) is locked.

Further, the support frame (11) and the cantilever frame (13) are provided with circular lightening chambers.

The present invention also provides another technical scheme:

A detection method based on the online detection tool, the method comprises the following steps:

1) Clean the 0-level precision marble platform and the reference surface of the parts, and hoist the parts on the marble platform;

2) After the parts are stabilized, place the online inspection tool on the marble platform, use the cantilever adjustment component (1) to adjust the height of the cantilever frame (13), and lock it with screws;

3) Connect and lock the dial gauge (34) with the gauge connecting rod (33); turn the gauge adjustment screw (38) to adjust the height position of the dial gauge (34), and lock it after adjusting to a proper position Dead; Rotate meter connecting rod (33), adjust the angle of dial indicator (34), be locked after being adjusted to suitable position and the reading of dial indicator (34) is cleared.

4) Push the online inspection tool to detect the high point of the part plane, and perform local scraping or grinding on the high point until the parallelism of the part meets the design requirements.

The present invention has the following beneficial effects:

Using the detection tooling of the present invention in conjunction with the 0-grade precision marble detection platform, the detection process has high precision in returning to zero, and can realize the problem of online detection of the parallelism of a large optical platform, thereby improving processing accuracy and efficiency.

Description of drawings

Fig. 1 is the front view of the online detection tool of the present invention;

Figure 2a, Figure 2b and Figure 2c are the front view, top view and left side view of the cantilever adjustment assembly of the present invention, respectively;

Fig. 3a, Fig. 3b, Fig. 3c and Fig. 3d are respectively the front view, top view, left view and cross-sectional view of the meter assembly of the present invention;

Fig. 4 is the schematic diagram of working process of the present invention;

Each label in the figure means:

1. Cantilever adjustment assembly, 2. Counterweight, 3. Meter adjustment assembly, 11. Support frame, 12. Slider, 13. Cantilever frame, 14. Locking screw, 15. Fixing screw, 31. Locking screw , 32, measuring rod connector, 33, measuring meter connecting rod, 34, dial indicator, 35, measuring rod slider, 36, slider cover, 37, screw, 38, measuring meter adjusting screw, 39, straight pin , 41. On-line detection tooling, 42. Large optical platform, 43. Grade 0 precision marble platform.

detailed description

The specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

1-4, the present invention discloses an online detection tool for large optical platforms, the tool includes: a cantilever adjustment assembly 1, a counterweight 2, and a gauge adjustment assembly 3; the cantilever adjustment assembly 1 includes: The support frame 11, the slider 12, the cantilever frame 13, the locking screw 14, and the fixing screw 15 can move up and down the cantilever frame 13 and lock it at a specified position through the cooperation and sliding of the dovetail groove; the meter adjustment assembly 3 includes: locking screw 31, measuring rod connector 32, measuring meter connecting rod 33, dial indicator 34, measuring rod slider 35, slider cover plate 36, screw 37, measuring meter adjusting screw 38, cylindrical pin 39.

Wherein, the slider cover plate 36 is fixed with the cantilever frame 13 by screws; the meter adjustment screw 38 is threadedly matched with the slider cover plate 36, and the movement of the meter adjustment screw 38 can be realized by rotation; the meter adjustment screw 38 There is a semi-circular ring groove at the bottom of the cantilever, which is fixed with the measuring rod slider 35 by a cylindrical pin 39, and the measuring rod slider 35 can move up and down in the straight groove of the cantilever frame 13 by rotating the meter adjusting screw 38 to a suitable position. After the position, it can be locked by a locking screw 31; the connecting piece 32 of the measuring rod is connected with the slider 35 of the measuring rod through an arc-shaped slot, and is locked by another locking screw 31; Measuring rod connecting piece 32 cooperates, and said another locking screw 31 is used as the axis in the middle, measuring meter connecting rod 33 can rotate around the axis to adjust the angle and utilize locking screw 31 to lock; Dial indicator 34 inserts measuring meter connecting rod 33 The inner hole, and lock it with locking screw 31.

Further, the support frame 11 and the cantilever frame 13 are provided with circular lightening chambers.

Wherein, the up and down movement of the meter can be realized by turning the meter adjusting screw 38, the angle of the meter can be adjusted by rotating the meter connecting rod 33, and the meter position can be locked by the locking screw 31 after adjusting the meter position.

As shown in Figure 4, the use mode or work process of the present invention are as follows:

1) Clean up the marble platform 43 with grade 0 precision and the reference plane of the parts, and hoist the parts on the marble platform; refer to the large optical platform 42 in the accompanying drawing 4 for the parts;

2) After the parts are stabilized, place the online detection tool 41 on the marble platform, use the cantilever adjustment assembly 1 to adjust the height of the cantilever frame 13, and lock it with screws;

3) Connect and lock the dial indicator 34 with the meter connecting rod 33; turn the meter adjusting screw 38 to adjust the height position of the dial indicator 34, and lock it after adjusting to a suitable position; rotate the meter connecting rod 33 , adjust the angle of the dial indicator 34, lock it after adjusting to a suitable position and clear the reading of the dial indicator 34;

4) Push the detection tool to detect the high point of the part plane, and locally scrape or grind the high point until the parallelism of the part meets the design requirements.

Parts not described in detail in the present invention belong to the well-known technology in the art.

The above are only some specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be covered within the protection scope of the present invention.

Claims (5)

1. A kind of on-line inspection frock for large-scale optical platform, it is characterized in that, described on-line inspection frock comprises: cantilever adjustment assembly (1), counterweight (2) and gauge adjustment assembly (3); Described cantilever The adjustment assembly (1) includes: a support frame (11), a slider (12), a cantilever frame (13), a locking screw (14), and a fixing screw (15); The support frame (11) is a triangular structure, the bottom surface is provided with an empty knife, and the side is provided with a dovetail groove; the side of the slider (12) is provided with a dovetail groove, which is used in conjunction with the support frame (11); the cantilever The frame (13) is a triangular structure, one end of the cantilever frame (13) is fixed to the slider (12), and the other end is provided with a gap for matching with the meter adjustment assembly (3); the cantilever frame (13) can be passed through The dovetail groove slides on the support frame (11), and can be locked by a locking screw (14) after sliding to a designated position. 2 . The on-line detection tool for large optical platforms according to claim 1 , wherein the counterweight ( 2 ) comprises two pieces, and the middle of the two counterweights is fixedly connected by bolts and nuts. 3 . 3. The on-line detection tool for large optical platforms according to claim 1, characterized in that, the meter adjustment assembly (3) includes: a plurality of locking screws (31), measuring rod connectors (32 ), measuring meter connecting rod (33), dial indicator (34), measuring rod slider (35), slider cover plate (36), measuring meter adjusting screw (38), cylindrical pin (39); The slider cover (36) is fixed with the cantilever frame (13) by screws; the meter adjustment screw (38) is threadedly matched with the slider cover (36), and the adjustment of the meter adjustment screw (38) can be realized by rotation. Move up and down; the bottom of the meter adjusting screw (38) is provided with a semicircular ring groove, which is fixed with the measuring rod slider (35) by a cylindrical pin (39), and the measuring rod sliding can be realized by rotating the measuring meter adjusting screw (38). The block (35) moves up and down in the straight groove of the cantilever frame (13), and can be locked by a locking screw (31) after moving to a suitable position; Block (35) is connected and locked by another locking screw (31); the meter connecting rod (33) cooperates with the measuring rod connector (32) through a straight groove, and the other locking screw (31) ) as an axis, the connecting rod (33) can be rotated around the axis to adjust the angle and locked by the locking screw (31); the dial indicator (34) is inserted into the inner hole of the connecting rod (33) and locked by locking Screw (31) is locked. 4 . The on-line inspection tool for large optical platforms according to claim 1 , characterized in that, a circular lightening cavity is provided on the support frame ( 11 ) and the cantilever frame ( 13 ). 5. A detection method based on the online detection tool described in any one of claims 1-4, characterized in that the method comprises the following steps: 1) Clean up the 0-grade precision marble platform (43) and the reference plane of the parts, and hoist the parts on the marble platform; 2) After the parts are stabilized, place the online inspection tool on the marble platform, use the cantilever adjustment component (1) to adjust the height of the cantilever frame (13), and lock it with screws; 3) Connect and lock the dial gauge (34) with the gauge connecting rod (33); turn the gauge adjustment screw (38) to adjust the height position of the dial gauge (34), and lock it after adjusting to a proper position Dead; Rotate the meter connecting rod (33), adjust the angle of the dial indicator (34), lock it after adjusting to a suitable position and reset the reading of the dial indicator (34); 4) Promote the online detection tooling, detect the high point of the part plane, and locally scrape or grind the surface of the part corresponding to the high point until the parallelism of the part meets the design requirements.

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