CN216283309U - PGI centering device - Google Patents

Abstract

The utility model provides a PGI centering device with high detection efficiency and high detection accuracy. A bearing seat assembly is arranged on a bottom plate; a bearing seat column, a bearing cover and a bearing seat assembly are in interference fit; a left guide sleeve is sleeved into the bearing seat column; The spring is sleeved into the left guide sleeve, the left headed guide sleeve is sleeved into the bearing seat column, and the left headed guide sleeve is connected with the beam plate by interference fit; the lower centering table is set on the worktable, and the worktable is set on the bottom plate; the upper centering table and the beam The plate is connected, the upper centering table and the lower centering table are coaxial; the positioning block is arranged on the bottom plate, the cushion table is arranged on the positioning block, and the positioning pin is arranged in the positioning block; the cushion table column is arranged on the cushion table; The right spring is sleeved into the right guide sleeve, the right lead guide sleeve is sleeved into the cushion platform column, and the right lead guide sleeve is connected with the beam plate by interference fit; the bottom plate is parallel to the beam plate. The utility model ensures that the upper centering table and the lower centering table are coaxial, and the aspherical lens detected each time conforms to the required detection position.

Description

PGI centering device

technical field

The utility model relates to a centering device, in particular to an auxiliary centering device on a PGI (surface shape detection profiler) platform.

Background technique

The use of aspherical optical elements in the optical system can not only reduce the number and weight of optical elements, reduce the size of the system, simplify the structure of the instrument, but also help to correct aberrations and improve the imaging quality. It can also increase the degree of freedom of optical design and reduce the Therefore, it has been widely used and developed rapidly in modern optical systems, especially in recent years, with the increase in demand for surveillance, vehicle, and sports DV, and the rapid growth of laser TV, optical communication and other products, driving the demand for aspheric lenses to maintain higher growth.

At the same time, higher requirements are put forward for the detection of the surface parameters of optical aspherical lenses. Therefore, the corresponding height is also mentioned for the positioning requirements of aspherical lenses detected on PGI testing equipment. The detection efficiency is low and the detection error is large. With the diversification of products, manual placement of aspherical lenses for detection gradually exposes the following problems: 1) When placing aspherical lenses, the centering is slow and unreliable; 2) PGI When the equipment detects aspherical surfaces, it needs to be placed and tested multiple times to obtain approximate values. Due to repeated inspections and no corresponding basic data for reference, each aspherical lens needs to be inspected more than three times to find the most reasonable fitting value, which reduces inspection efficiency, increases labor costs and equipment loss costs, etc.; 3) When placing the aspherical lens on the test table, it is mainly controlled by people, and the test results also depend on the person. Therefore, it is difficult to ensure a fixed centering position for the lens placed on the auxiliary tooling. Due to factors, each lens will be repeatedly tested several times, and the test time is about 10-15 minutes each time, and the human-machine cooperation cannot reach a reasonable state.

Utility model content

The technical problem to be solved by the utility model is to provide a PGI centering device with high detection efficiency and high detection accuracy.

The technical scheme adopted by the utility model to solve the technical problem is: a PGI centering device, the bearing seat assembly is arranged on the bottom plate; the bearing seat column and the bearing cover are in interference fit with the bearing seat assembly; the left guide sleeve is sleeved into the bearing seat column, The left spring is sleeved into the left guide sleeve, the left headed guide sleeve is sleeved into the bearing seat column, and the left headed guide sleeve is connected with the beam plate by interference fit; the lower centering table is arranged on the worktable, and the worktable is arranged in The upper centering table is connected with the beam plate, and the upper centering table and the lower centering table are coaxial; the positioning block is arranged on the bottom plate, the cushion table is arranged on the positioning block, and the positioning pin is arranged on the in the positioning block; the upright column of the bed is set on the bed; the right guide sleeve is sleeved into the upright column of the cushion table, the right spring is sleeved into the right guide sleeve, the right lead guide sleeve is sleeved into the bed column, the right lead The guide sleeve is connected with the beam plate by interference fit; the bottom plate is parallel to the beam plate.

Further, it also includes two cover caps, the two cover caps are arranged on the beam plate and screwed into the bearing seat column and the cushion platform column respectively.

Further, it also includes a left beam handle and a right beam handle, the left beam handle and the right beam handle are respectively arranged on the left and right ends of the beam plate and are respectively connected with the beam plate by threads.

Further, the positioning block is connected to the pad through M4×16 socket head cap screws.

Further, the upright column of the bed is connected with the bed by threads.

Further, the positioning pins are screwed into the positioning holes on the bottom plate for positioning.

Further, the bearing seat assembly is connected to the bottom plate through M4×16 socket head cap screws.

Further, the upper centering table is connected with the beam plate by M4×16 socket head cap screws.

Further, the left headed guide sleeve, the right headed guide sleeve and the beam plate are respectively connected by interference fit with M2-3 slotted flat-end locking screws.

Further, the lower centering table is connected to the bottom plate through M4×55 socket head cap screws.

Further, the left guide sleeve and the right guide sleeve are the same in size and shape; the left spring and the right spring are the same in size and shape; the left headed guide sleeve and the right headed guide sleeve are the same in size and shape; the left beam handle is the same as the right beam. The handles are the same size and shape.

The beneficial effects of the utility model are: the left and right guide sleeves are used to ensure the fixed movement in the Z direction, the fixed length beam plate ensures the fixed position in the X direction, the positioning pin and the positioning hole ensure the fixed position in the Y direction, so as to ensure the upper centering table and the lower centering table. The center stage is coaxial, and the aspherical lenses tested each time meet the testing position required for testing, which improves the difference in centering positions caused by different personnel and placement methods; previously, in order to ensure data reliability, each testing At least three times of the above type, using the device of the utility model for one positioning and one test, each test saves at least 20-30 minutes, reduces the time occupied by each machine, improves the detection efficiency of PGI detection equipment by more than three times, and the detection accuracy is much higher than that of manual work. The accuracy of placement; by replacing the upper centering table and the lower centering table, the detection of aspherical lenses with different outer diameters of φ4.5-50 is realized. The device of the utility model is suitable for automatic centering and positioning of aspherical high-precision lenses with various shapes of double concave, double convex, one convex and one concave.

Description of drawings

FIG. 1 is a sectional view of the front view of the device of the present invention.

FIG. 2 is a right side view of FIG. 1 .

FIG. 3 is a plan view of FIG. 1 .

FIG. 4 is an exploded view of FIG. 1 .

Figure 5 is a perspective view of the device of the present invention.

Fig. 6 is the working schematic diagram of the device of the present invention.

Detailed ways

As shown in Figures 1-5, the PGI centering device of the present invention includes a base plate 1, a positioning block 2, a pad 3, a pad column 4, a left guide sleeve 5, a right guide sleeve 24, a left spring 6, and a right spring 21. , Left headed guide sleeve 7, right headed guide sleeve 22, left beam handle 8, right beam handle 23, cap 9, beam plate 11, upper centering table 13, lower centering table 14, bearing seat column 15, bearing cover 16, The bearing seat assembly 17, the worktable 18 and the positioning pin 20, wherein the upper centering table 13 and the lower centering table 14 are coaxial; the bottom plate 1 is parallel to the beam plate 11; the bearing seat assembly 17 is arranged on the bottom plate 1, and the bearing seat assembly 17 It is connected with the bottom plate 1 through M4×16 hexagon socket screws, which is convenient for the positioning block 2 and the above connecting parts to rotate around the central axis of the bearing seat column 15 when the tooling is opened, so that the two maintain a fixed positional relationship; the bearing seat column 15, The bearing cover 16 and the bearing seat assembly 17 have an interference fit; the left guide sleeve 5 is inserted into the bearing seat column 15, the left spring 6 is inserted into the left guide sleeve 5, the left leaded guide sleeve 7 is inserted into the bearing seat column 15, and the left leaded guide sleeve 7 is inserted into the bearing seat column 15. It is connected with the beam plate 11 by interference fit; the lower centering table 14 is arranged on the worktable 18, and the worktable 18 is arranged on the bottom plate 1, and the worktable 18 and the lower centering table 14 are connected to the bottom plate through M4×55 inner hexagon socket head screws. 1 connection; the positioning block 2 is set on the bottom plate 1, the pad platform 3 is set on the positioning block 2, the pad platform column 4 is set on the pad platform 3, and the positioning block 2 is connected with the pad platform 3 through M4×16 socket head screws , the upright column 4 of the bed is connected with the bed 3 by thread; the right guide sleeve 24 is inserted into the upright column 4 of the bed, the right spring 21 is inserted into the right guide sleeve 24, the right headed guide sleeve 22 is inserted into the upright column 4, and the right headed guide sleeve 22 Interference fit with the beam plate 11; the left beam handle 8 and the right beam handle 23 are respectively arranged on the left and right ends of the beam plate 11, and are respectively connected with the beam plate 11 by threads, so as to facilitate the pressing of the beam plate 11; the upper centering table 13 passes through The M4×16 socket head cap screws 12 are connected with the beam plate 11; the left headed guide sleeve 7, the right headed guide sleeve 22 and the beam plate 11 are respectively connected by the M2-3 slotted flat end locking screws 10 with interference fit to prevent the left Circumferential rotation of the leading guide sleeve 7 and the right leading guide sleeve 22 due to interference failure; two caps 9 are arranged on the beam plate 11 and screwed into the bearing seat column 15 and the cushion column column 4 respectively, so that the beam plate 11 is In the static state, the space position at the time of design is guaranteed, and the spring force of the left spring 6 and the right spring 21 can prevent them from being pushed out; the positioning pin 20 is arranged in the positioning block 2, and the bottom plate 1 and the positioning block 2 can move relatively. When the positioning block 2 is rotated (the tooling is opened), loosen the positioning pin 20, and the positioning block 2 and the above connecting parts rotate together; when the positioning block 2 needs to be fixed, screw the positioning pin 20 into the positioning hole 19 on the base plate 1 for positioning .

The above-mentioned left guide sleeve 5 is the same in size and shape as the right guide sleeve 24; the left spring 6 is the same in size and shape as the right spring 21; same shape.

Before the PGI centering device of the present invention is installed, it is adjusted to the required horizontal position and fixed. The lower centering table 14 is connected to the base plate 1 for positioning, and the beam plate 11 relies on the left and right column components to ensure that the Z-direction movement track is fixed and fixed. The length of the beam plate 11 ensures that the X-direction position is fixed, and the positioning pin 20 and the positioning hole 19 ensure that the Y-direction position is fixed, so as to ensure that the upper centering table 13 and the lower centering table 14 are coaxial, thereby ensuring that the aspherical lenses tested each time are consistent. The detection position required for detection. The upper centering table 13 and the lower centering table 14 can be replaced, so as to realize the detection of aspherical lenses with different outer diameters.

When working, the PGI centering device of the present utility model is fixedly placed on the PGI detection equipment platform, and then the tooling is opened, as shown in Figure 6, the aspherical lens is placed on the lower centering table 14 with tweezers; then the tooling ( The positioning block 2 and the above connecting parts) are rotated to the state shown in Figure 5, and then the positioning pin 20 is screwed into the positioning hole 19 to realize the coaxiality of the upper centering table 13 and the lower centering table 14; The left guide sleeve 5 and the right guide sleeve 24 make the Z-direction (up and down) moving trajectory the same each time, so as to ensure that the coaxiality of the aspheric lens and the upper centering table 13 and the lower centering table 14 is infinitely close; then loosen the beam plate 11 , the left spring 6 and the right spring 21 are reset, and then the tooling is opened to the PGI, as shown in Figure 6, to avoid the interference problem when the PGI equipment detects the surface shape of the aspherical lens.

Claims (11)

1. A PGI centering device, characterized by: the bearing seat assembly (17) is arranged on the bottom plate (1); the bearing seat upright column (15) and the bearing cover (16) are in interference fit with the bearing seat assembly (17); the left guide sleeve (5) is sleeved into the bearing seat upright post (15), the left spring (6) is sleeved into the left guide sleeve (5), the left guide sleeve with the head (7) is sleeved into the bearing seat upright post (15), and the left guide sleeve with the head (7) is connected with the cross beam plate (11) in an interference fit manner; the lower centering table (14) is arranged on a workbench (18), and the workbench (18) is arranged on the bottom plate (1); the upper centering table (13) is connected with the cross beam plate (11), and the upper centering table (13) and the lower centering table (14) are coaxial; the positioning block (2) is arranged on the bottom plate (1), the cushion table (3) is arranged on the positioning block (2), and the positioning pin (20) is arranged in the positioning block (2); the cushion table upright post (4) is arranged on the cushion table (3); the right guide sleeve (24) is sleeved in the cushion table upright post (4), the right spring (21) is sleeved in the right guide sleeve (24), the right guide sleeve (22) with a head is sleeved in the cushion table upright post (4), and the right guide sleeve (22) with a head is connected with the cross beam plate (11) in an interference fit manner; the bottom plate (1) is parallel to the cross beam plate (11).
2. 2. The PGI centering apparatus of claim 1, wherein: the bearing pedestal column structure is characterized by further comprising two cover caps (9), wherein the two cover caps (9) are arranged on the cross beam plate (11) and are screwed into the bearing pedestal column (15) and the cushion table column (4) respectively.
3. 3. The PGI centering apparatus of claim 1 or 2, wherein: the left crossbeam handle (8) and the right crossbeam handle (23) are arranged at the left end and the right end of the crossbeam plate (11) respectively, and are in threaded connection with the crossbeam plate (11) respectively.
4. 4. The PGI centering apparatus of claim 1 or 2, wherein: the positioning block (2) is connected with the cushion table (3) through an M4X 16 hexagon socket head cap screw; the cushion table upright post (4) is in threaded connection with the cushion table (3).
5. 5. The PGI centering apparatus of claim 1 or 2, wherein: the positioning pin (20) is screwed into the positioning hole (19) on the bottom plate (1) for positioning.
6. 6. The PGI centering apparatus of claim 1 or 2, wherein: the bearing seat assembly (17) is connected with the bottom plate (1) through an M4 multiplied by 16 hexagon socket head cap screw.
7. 7. The PGI centering apparatus of claim 1 or 2, wherein: the upper centering table (13) is connected with the beam plate (11) through an M4 x 16 hexagon socket head cap screw (12).
8. 8. The PGI centering apparatus of claim 1 or 2, wherein: the left headed guide sleeve (7), the right headed guide sleeve (22) and the beam plate (11) are respectively connected through a slotted flat end locking screw (10) of M2-3 in an interference fit manner.
9. 9. The PGI centering apparatus of claim 1 or 2, wherein: the lower centering table (14) is connected with the bottom plate (1) through an M4 x 55 hexagon socket head cap screw.
10. 10. The PGI centering apparatus of claim 1 or 2, wherein: the left guide sleeve (5) and the right guide sleeve (24) are the same in size and shape; the left spring (6) and the right spring (21) are the same in size and shape; the left guide sleeve (7) with the head is the same as the right guide sleeve (22) with the head in size and shape.
11. 11. The PGI centering apparatus of claim 3, wherein: the left beam handle (8) and the right beam handle (23) are the same in size and shape.

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