1. The utility model provides an optical glass processing fixing device, includes fixed station (1), its characterized in that: a circular frame hole (11) is formed in the table top of the fixed table (1), a guide ring (12) which is coaxial with the circular frame hole (11) is arranged at the bottom end of the table top of the fixed table (1), and six clamping and positioning assemblies (2) which are distributed around the circumference of a central shaft of the circular frame hole (11) are arranged in the circular frame hole (11); each clamping and positioning component (2) is in sliding fit with the guide ring (12); the bottom end of the guide ring (12) is provided with a clamping driving mechanism (3) for driving the six clamping and positioning components (2) to synchronously slide; wherein:

the clamping and positioning assembly (2) comprises a stroke frame (21), the stroke frame (21) comprises a horizontal plate (211) which is located in the round frame hole (11) and has a rectangular structure, the length direction of the horizontal plate (211) points to the circle center of the round frame hole (11), one end, far away from the circle center of the round frame hole (11), of the horizontal plate (211) is provided with a side clamping convex block (2111), the horizontal plate (211) is provided with a plurality of elastic inner supporting pieces (24) which are uniformly distributed along the length direction of the horizontal plate, the elastic supporting direction of the elastic inner supporting pieces (24) is the vertical direction, and a pressing assembly (25) for pressing optical glass is arranged on the side clamping convex block (2111);

the elastic inner support piece (24) comprises a cylinder (241) vertically fixed on the lower plate surface of the horizontal plate (211), a pin shaft (242) vertically penetrating the cylinder (241), a ball end (243) fixed at the top end of the pin shaft (242), a pressure spring (244) sleeved on the pin shaft (242) and a ball (245) movably embedded at the top end of the ball end (243); the horizontal plate (211) is located right above the cylinder (241) and is provided with a round hole coinciding with the inner circle of the cylinder (241), the top end of the pin shaft (242) penetrates through the round hole, the pin shaft (242) is vertically matched with the bottom end of the cylinder (241) in a sliding mode, and two ends of the pressure spring (244) are fixedly connected to the inner end face of the bottom of the cylinder (241) and the bottom end face of the ball end (243) respectively.

2. An optical glass processing fixture as defined in claim 2, wherein: the side clamping convex block (2111) is provided with a U-shaped groove (2112), the downward pressing assembly (25) comprises a second spring (251) which is vertically fixed in the U-shaped groove (2112) and extends upwards, the top end of the second spring (251) is fixed with a pressing wheel seat (252), and a pressing wheel (253) is horizontally and rotatably installed on the pressing wheel seat (252).

3. An optical glass processing fixture as defined in any one of claims 1 and 2 wherein: the stroke frame (21) further comprises a vertical plate (212) vertically fixed at the bottom end of the horizontal plate (211), a guide post (22) horizontally matched with the guide ring (12) in a sliding mode is horizontally and fixedly installed on the side wall of the vertical plate (212), the sliding direction of the guide post (22) points to the circle center of the circular frame hole (11), a first spring (23) is sleeved on the guide post (22), and two ends of the first spring (23) are respectively fixed on the guide ring (12) and the vertical plate (212).

4. An optical glass processing fixture as defined in claim 3, wherein: the clamping driving mechanism (3) comprises a mounting frame (31) horizontally and fixedly mounted on the bottom end face of the guide ring (12), a driving air cylinder (32) horizontally and fixedly mounted on the bottom end face of the mounting frame (31) through a fixing seat, a driving rack (33) fixedly connected with the output end of the driving air cylinder (32), a rotary drum (34) vertically and rotatably mounted on the mounting frame (31), and six connecting rods (343) connected to the rotary drum (34); the central axis of the rotary drum (34) coincides with the central axis of the guide ring (12), the bottom end of the rotary drum (34) is provided with a gear ring (341) meshed with the driving rack (33), the top end of the rotary drum (34) is horizontally provided with a disc (342), six connecting rods (343) are uniformly distributed around the circumference of the central axis of the rotary drum (34), one ends of the six connecting rods (343) are hinged on the disc (342), and the other ends of the six connecting rods (343) are hinged on six vertical plates (212) in a one-to-one correspondence manner.

5. An optical glass processing fixture as defined in claim 4, wherein: the mounting frame (31) comprises a mounting disc (311) and a plurality of connecting columns (312); the connecting columns (312) are fixed at the bottom end of the guide ring (12) and are uniformly distributed around the circumference of the central shaft of the guide ring (12); the mounting disc (311) is horizontally fixed at the bottom ends of the connecting columns (312); the rotary drum (34) is vertically and rotatably mounted on the mounting disc (311); the driving cylinder (32) is horizontally and fixedly installed on the bottom end face of the mounting disc (311) through a fixing seat.

Background

The optical glass refers to glass which is assembled in an optical instrument, can change the propagation direction of light and can change the relative spectral distribution of ultraviolet light, visible light or infrared light; optical glass in the narrow sense means colorless optical glass; the generalized optical glass also comprises colored optical glass, laser glass, quartz optical glass, radiation-resistant glass, ultraviolet infrared optical glass, fiber optical glass, acousto-optic glass, magneto-optic glass and photochromic glass; the optical glass can be used for manufacturing lenses, prisms, reflectors, windows and the like in optical instruments, and components made of the optical glass are key elements in the optical instruments.

The invention provides an optical glass processing and fixing device, which is a common processing means in the optical glass processing process and is used for fixing the optical glass to facilitate processing in the optical glass processing and manufacturing process and realizing positioning through fixing, the fixing device is used for fixing, clamping and positioning the optical glass in the processing process, and is particularly suitable for processing and fixing the optical glass piece with a round structure and a spherical curved surface as shown in FIG. 8, when the existing fixing device is used for fixing and clamping the optical glass piece as shown in FIG. 8, only the edge position of the optical glass piece is usually supported and clamped, the whole spherical curved surface part of the optical glass piece is not effectively supported, the number of supporting contact parts is too small, therefore, the whole optical glass piece is easy to crack and break due to improper operation in the actual processing process, thereby causing material waste.

Disclosure of Invention

In order to solve the above problems, the present invention provides an optical glass processing fixing device for solving the above problems mentioned in the background art.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose: the optical glass processing and fixing device comprises a fixing table, wherein a circular frame hole is formed in the table top of the fixing table, a guide ring coaxial with the circular frame hole is arranged at the bottom end of the table top of the fixing table, and six clamping and positioning assemblies distributed around the circumference of a central shaft of the circular frame hole are arranged in the circular frame hole; each clamping and positioning assembly is in sliding fit with the guide ring; the bottom end of the guide ring is provided with a clamping driving mechanism for driving the six clamping and positioning components to synchronously slide; wherein: the clamping and positioning assembly comprises a stroke frame, the stroke frame comprises a horizontal plate which is located in a rectangular structure in a round frame hole, the length direction of the horizontal plate is directional to the circle center of the round frame hole, the top of the horizontal plate is far away from one end of the circle center of the round frame hole, a side clamping lug is arranged at one end of the horizontal plate, a plurality of elastic inner supporting pieces which are uniformly distributed along the length direction of the horizontal plate are arranged on the horizontal plate, the elastic supporting direction of the elastic inner supporting pieces is vertical, and a pressing assembly used for pressing optical glass is arranged on the side clamping lug.

Preferably, the elastic inner supporting piece comprises a cylinder vertically fixed on the lower plate surface of the horizontal plate, a pin shaft vertically penetrating the cylinder, a ball end fixed at the top end of the pin shaft, a pressure spring sleeved on the pin shaft and a ball movably embedded at the top end of the ball end; and a round hole which is coincided with the inner circle of the cylinder is formed in the horizontal plate and is positioned right above the cylinder, the top end of the pin shaft penetrates through the round hole, the pin shaft is vertically matched with the bottom end of the cylinder in a sliding manner, and two ends of the pressure spring are respectively and fixedly connected to the inner end face of the bottom of the cylinder and the bottom end face of the ball end.

Preferably, a U-shaped groove is formed in the side clamping convex block, the downward pressing assembly comprises a second spring which is vertically fixed in the U-shaped groove and extends upwards, a pressing wheel seat is fixed at the top end of the second spring, and a pressing wheel is horizontally and rotatably installed on the pressing wheel seat.

Preferably, the stroke frame further comprises a vertical plate vertically fixed at the bottom end of the horizontal plate, a guide pillar horizontally and slidably matched with the guide ring is horizontally and fixedly installed on the side wall of the vertical plate, the sliding direction of the guide pillar points to the circle center of the circular frame hole, a first spring is sleeved on the guide pillar, and two ends of the first spring are respectively fixed on the guide ring and the vertical plate.

Preferably, the clamping driving mechanism comprises a mounting frame horizontally and fixedly mounted on the bottom end surface of the guide ring, a driving cylinder horizontally and fixedly mounted on the bottom end surface of the mounting frame through a fixing seat, a driving rack fixedly connected with the output end of the driving cylinder, a rotating drum vertically and rotatably mounted on the mounting frame, and six connecting rods connected to the rotating drum; the central shaft of the rotary drum coincides with the central shaft of the guide ring, the bottom end of the rotary drum is provided with a gear ring meshed with the driving rack, the top end of the rotary drum is horizontally provided with a disc, six connecting rods are uniformly distributed around the circumference of the central shaft of the rotary drum, one ends of the six connecting rods are hinged on the disc, and the other ends of the six connecting rods are hinged on six vertical plates in a one-to-one correspondence manner.

Preferably, the mounting rack comprises a mounting disc and a plurality of connecting columns; the connecting columns are fixed at the bottom end of the guide ring and are uniformly distributed around the circumference of the central shaft of the guide ring; the mounting disc is horizontally fixed at the bottom ends of the connecting columns; the rotary drum is vertically and rotatably arranged on the mounting disc; the driving cylinder is horizontally and fixedly installed on the bottom end face of the mounting plate through a fixing seat.

The technical scheme has the following advantages or beneficial effects: 1. the invention provides an optical glass processing and fixing device, which changes the situation that the edge clamping and supporting are only carried out by the traditional fixing device when the optical glass with a round structure and a spherical curved surface is processed, strengthens the uniform distribution and support of the whole spherical curved surface part, and avoids the situation that the optical glass is cracked or broken in the processing process because the contact parts of the clamping and supporting are too few.

2. The invention provides an optical glass processing and fixing device, which can achieve the purpose of clamping, fixing and positioning an optical glass piece by synchronously driving six clamping and positioning components through an arranged clamping driving mechanism, wherein the edge of the optical glass piece can be clamped and clamped in a clamping manner through six side clamping convex blocks, and under the matching and pressing of six pressing components, six groups of elastic inner supporting pieces can uniformly disperse and support the concave curved surface of the optical glass piece, thereby achieving the purpose of uniformly distributing and supporting the spherical curved surface part of the optical glass piece at the same time.

Drawings

The invention and its features, aspects and advantages will become more apparent from reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings; the drawings, in which like numerals refer to like parts throughout the several views and which are not necessarily drawn to scale, emphasis instead being placed upon illustrating the principles of the invention.

Fig. 1 is a schematic perspective view of an optical glass processing fixture according to the present invention at a viewing angle.

Fig. 2 is a schematic perspective view of an optical glass processing fixture according to another aspect of the present invention.

Fig. 3 is a partially enlarged schematic view at a in fig. 1.

FIG. 4 is a top view of an optical glass processing fixture in accordance with the present invention.

Fig. 5 is a sectional view of B-B in fig. 4.

Fig. 6 is a partially enlarged schematic view at C in fig. 5.

Fig. 7 is a front view of the present invention.

Fig. 8 is a schematic structural view of an optical glass member suitable for clamping and fixing by an optical glass processing fixing device provided by the invention.

In the figure: 1. a fixed table; 11. a circular frame hole; 12. a guide ring; 2. clamping and positioning the assembly; 21. a stroke frame; 211. a horizontal plate; 2111. side clamping convex blocks; 2112. a U-shaped groove; 212. a vertical plate; 22. a guide post; 23. a first spring; 24. an elastic inner support member; 241. a cylinder; 242. a pin shaft; 243. a ball end; 244. a pressure spring; 245. a ball bearing; 25. pressing the assembly; 251. a second spring; 252. a pressure wheel seat; 253. a pinch roller; 3. a clamping drive mechanism; 31. a mounting frame; 311. mounting a disc; 312. connecting columns; 32. a driving cylinder; 33. a drive rack; 34. a rotating drum; 341. a ring gear; 342. a disc; 343. a connecting rod; 4. an optical glass member.

Detailed Description

The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for the purpose of providing those skilled in the art with a more complete, accurate and thorough understanding of the concept and technical solution of the present invention, and to facilitate the implementation thereof, but not to limit the present invention.

As shown in fig. 1, 2 and 4, an optical glass processing and fixing device comprises a fixing table 1, wherein a circular frame hole 11 is formed in a table top of the fixing table 1, a guide ring 12 coaxial with the circular frame hole 11 is arranged at the bottom end of the table top of the fixing table 1, and six clamping and positioning assemblies 2 distributed around the circumference of a central shaft of the circular frame hole 11 are arranged in the circular frame hole 11; each clamping and positioning component 2 is in sliding fit with the guide ring 12; the bottom end of the guide ring 12 is provided with a clamping driving mechanism 3 for driving the six clamping and positioning components 2 to synchronously slide.

As shown in fig. 3, 5, 6 and 7, the clamping and positioning assembly 2 includes a stroke frame 21, the stroke frame 21 includes a horizontal plate 211 located in the circular frame hole 11 and having a rectangular structure, a length direction of the horizontal plate 211 points to a center of the circular frame hole 11, one end of the top of the horizontal plate 211 away from the center of the circular frame hole 11 is provided with a side clamping protrusion 2111, the horizontal plate 211 is provided with four elastic inner supporting members 24 uniformly arranged and distributed along the length direction thereof, an elastic supporting direction of the elastic inner supporting members 24 is a vertical direction, and the side clamping protrusion 2111 is provided with a pressing assembly 25 for pressing the optical glass; the stroke frame 21 further comprises a vertical plate 212 welded at the bottom end of the horizontal plate 211, a guide post 22 in horizontal sliding fit with the guide ring 12 is welded on the side wall of the vertical plate 212, the sliding direction of the guide post 22 points to the circle center of the circular frame hole 11, a first spring 23 is sleeved on the guide post 22, and two ends of the first spring 23 are respectively welded on the guide ring 12 and the vertical plate 212.

As shown in fig. 3 and 6, the elastic inner support 24 includes a cylinder 241 vertically welded on the lower plate surface of the horizontal plate 211, a pin 242 vertically penetrating the cylinder 241, a ball end 243 welded on the top end of the pin 242, a pressure spring 244 sleeved on the pin 242, and a ball 245 movably embedded on the top end of the ball end 243; a round hole coinciding with the inner circle of the cylinder 241 is formed in the horizontal plate 211 and located right above the cylinder 241, the top end of the pin shaft 242 penetrates through the round hole, the pin shaft 242 is vertically matched with the bottom end of the cylinder 241 in a sliding mode, and two ends of the pressure spring 244 are respectively welded to the inner end face of the bottom of the cylinder 241 and the bottom end face of the ball end 243.

In the process of fixing and clamping the optical glass element 4, the four elastic inner supporting pieces 24 in each clamping and positioning assembly 2 provide radial support, and the six clamping and positioning assemblies 2 are uniformly distributed in the circumferential direction, so that the six groups of elastic inner supporting pieces 24 can form uniformly distributed inner supporting points on the whole concave curved surface of the optical glass element 4 to form stable support for the curved surface, the condition that the edge clamping and supporting are only performed when the traditional fixing device is used for processing the optical glass element 4 with the spherical curved surface of the circular structure is changed, the uniformly distributed support for the whole spherical curved surface part is enhanced, and the condition that the optical glass element 4 is cracked or broken in the processing process due to too few contact parts of the clamping and supporting parts is avoided; in addition, it should be noted that the elastic stiffness of the pressure spring 244 is moderate, after the six pressure wheels 253 are pressed against the convex curved surface of the optical glass element 4, and the ball 245 rolls along the concave curved surface of the optical glass element 4, the pressure spring 244 will be correspondingly compressed along the curved surface of the concave curved surface, the pressure spring 244 is compressed, the pin 242 will slide downwards along the cylinder 241, and the ball 245 will descend, and the reverse acting elastic force formed after compression is not enough to cause the spalling of the optical glass element 4.

As shown in fig. 5 and 6, a U-shaped groove 2112 is formed in the side clamping protrusion 2111, the downward pressing assembly 25 includes a second spring 251 welded in the U-shaped groove 2112 and extending upward, a pressing wheel seat 252 is welded to the top end of the second spring 251, and a pressing wheel 253 is horizontally and rotatably mounted on the pressing wheel seat 252. When the optical glass element 4 is clamped and fastened, the six pressing assemblies 25 are mutually matched, under the action of the elastic force of the second spring 251, the six pressing wheels 253 are pressed towards the convex curved surface of the optical glass element 4 in a pressure equalizing manner, and the six groups of elastic inner supporting pieces 24 are forced to form uniform support for the concave curved surface of the optical glass element 4.

As shown in fig. 4, 5 and 7, the clamping driving mechanism 3 includes a mounting bracket 31 horizontally and fixedly mounted on the bottom end surface of the guide ring 12, and the mounting bracket 31 includes a mounting plate 311 and six connecting columns 312; six connecting columns 312 are welded at the bottom end of the guide ring 12 and are uniformly distributed around the circumference of the central shaft of the guide ring 12; the mounting plate 311 is horizontally welded at the bottom ends of the six connecting columns 312; the clamping driving mechanism 3 further comprises a driving cylinder 32 horizontally and fixedly mounted on the bottom end surface of the mounting plate 311 through a fixed seat, a driving rack 33 fixedly connected with the output end of the driving cylinder 32, a rotating drum 34 vertically and rotatably mounted on the mounting plate 311, and six connecting rods 343 connected to the rotating drum 34; the central axis of the rotary drum 34 coincides with the central axis of the guide ring 12, the bottom end of the rotary drum 34 is provided with a gear ring 341 meshed with the driving rack 33, the top end of the rotary drum 34 is horizontally provided with a disc 342, six connecting rods 343 are uniformly distributed around the circumference of the central axis of the rotary drum 34, one ends of the six connecting rods 343 are hinged on the disc 342, and the other ends of the six connecting rods 343 are hinged on six vertical plates 212 in a one-to-one correspondence manner.

When the optical glass piece 4 is clamped and fastened, the concave curved surface of the optical glass piece 4 is placed downwards on the six groups of elastic inner supporting pieces 24, and then the clamping driving mechanism 3 is started to synchronously drive the six clamping and positioning assemblies 2 to realize the clamping function of the optical glass piece 4; specifically, the driving cylinder 32 is started to push the driving rack 33 to move forward, the driving rack 33 drives the drum 34 to rotate by a certain angle through meshing transmission with the gear ring 341, then the disc 342 rotates by a corresponding rotation angle along with the drum 34, the rotating disc 342 drives the six connecting rods 343 to pull the respective hinged vertical plates 212 to move, so that the stroke frame 21 is driven to move towards the center of the circular frame hole 11 under the guiding action of the guide post 22, the edge position of the optical glass piece 4 actively enters the lower parts of the six press wheels 253 along with the gradual movement of the pressing component 25, the stroke frame 21 continues to move, the six press wheels 253 all press the outer convex curved surface of the optical glass piece 4 under the elastic force of the second spring 251, then the balls 245 on the six groups of elastic inner supporting pieces 24 all realize the function of abutting rolling contact with the inner concave curved surface of the optical glass piece 4, and continue to move close along with the stroke frame 21, finally, the edge of the lite 4 will abut against the six side clamp protrusions 2111, thereby performing the clamping positioning function of the lite 4, the other six pressing wheels 253 realize the function of pressing the optical glass piece 4, the pressing wheels 253 can roll along the convex curved surface of the optical glass piece 4, and the six groups of elastic inner supporting pieces 24 realize the function of uniformly supporting the concave curved surface of the optical glass piece 4, the degree of compression of the four elastic inner supporting pieces 24 positioned on the clamping and positioning assembly 2 from the center of the optical glass piece 4 to the edge of the optical glass piece 4 is increased in sequence, by clamping the edge position of the optical glass piece 4 and uniformly dispersing and supporting the inner concave curved surface, the clamping and fixing are ensured, the fixing and positioning functions are realized, the uniform support to the whole optical glass piece 4 is greatly improved, and the probability of breakage of the optical glass piece 4 in the processing process can be effectively reduced.

Those skilled in the art should understand that those skilled in the art can implement the modifications in combination with the prior art and the above embodiments, and detailed descriptions thereof are omitted; such variations do not affect the essence of the present invention and are not described herein.

The above description is of the preferred embodiment of the invention; it is to be understood that the invention is not limited to the particular embodiments described above, in that devices and structures not described in detail are understood to be implemented in a manner common in the art; any person skilled in the art can make many possible variations and modifications, or modify equivalent embodiments, without departing from the technical solution of the invention, without affecting the essence of the invention; therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the scope of the protection of the technical solution of the present invention, unless the contents of the technical solution of the present invention are departed.