Fixing tool for lens edge milling and grinding

Abstract

The utility model provides a lens edge milling and grinding fixing tool which comprises a clamp and a base. The clamp comprises a base part, a plurality of clamping finger parts, a mounting part and a plurality of matching parts; the base part is axially positioned between the plurality of clamping finger parts and the mounting part; the plurality of clamping finger parts are spaced in the circumferential direction and the radial direction and are fixedly connected to the base part, and the plurality of clamping finger parts are used for clamping a lens; the mounting part is used for being mounted on a corresponding component of external milling and grinding equipment; each matching part protrudes towards the base part; the base comprises a bottom plate, an annular part and a sleeve; the bottom plate is provided with through holes; the annular part and the sleeve are located on the two opposite sides of the bottom plate. The annular part is arranged on the multiple matching parts in a sleeving mode, gaps are formed between the annular part and the matching parts when the multiple clamping finger parts do not elastically deform and expand, the annular part and the matching parts press and make contact with each other when the multiple clamping finger parts elastically deform and expand, and the outer circumferential face of the annular part is closer to the outer circumferential face of the corresponding clamping finger part relative to the inner circumferential face of each clamping finger part in the radial direction. The sleeve is used for being fixed to a corresponding component of the milling and grinding equipment.

Description

Technical Field

[0001] The present disclosure relates to the field of infrared material processing, and more particularly to a fixture for fixing and milling the edge of a lens. Background Art

[0002] Milling is a very important step in infrared material processing. One important requirement is the ETV (Edge Thickness Variation) of the processed product. The stability of the fixture during operation has a great impact on the ETV of the product.

[0003] Figure 1 It is an assembled sectional view of the current fixture for fixing and milling the edge of a lens. Figure 2 It is Figure 1 a schematic diagram of the working state of the fixture for fixing and milling the edge of a lens.

[0004] As Figure 1 and Figure 2 shown, the current fixture 100' for fixing and milling the edge of a lens includes a clamp 1' and a base 2'.

[0005] The clamp 1' includes a base portion 11', a plurality of clamping fingers 12', a mounting portion 13', and a plurality of mating portions 14'.

[0006] The base portion 11' is located between the plurality of clamping fingers 12' and the mounting portion 13' along the axial direction D. The plurality of clamping fingers 12' are spaced apart from each other in the circumferential direction by a slit S', spaced apart from each other in the radial direction, and fixedly connected to the base portion 11' at one end close to the base portion 11'. The plurality of clamping fingers 12' are used to open by elastic deformation to accommodate the lens 200 to be edge-milled and clamp the lens 200 of the infrared material to be edge-milled by a milling tool 300 by the elastic restoring force generated by the elastic deformation. The mounting portion 13' is used to be mounted on a corresponding component 400 of an external milling device. Specifically, the mounting portion 13' is provided with an internal thread 13'1, and the internal thread 13'1 is used to engage an external thread portion of a rotatable main shaft 400a of the corresponding component 400 of the external milling device. Each mating portion 14' protrudes from the side surface of the corresponding clamping finger 12' facing the base portion 11 along the axial direction D towards the base portion 11', and is spaced apart from the portion of the corresponding clamping finger 12' connected to the base portion 11' in the radial direction.

[0007] The base 2' includes a bottom plate 21', an annular portion 22', and a sleeve 23'.

[0008] The bottom plate 21' has a through hole 211' that passes through along the axial direction D. The annular portion 22' and the sleeve 23' are located on opposite sides of the bottom plate 21' along the axial direction D. The annular portion 22 has a receiving cavity 221', and the annular portion 22' is sleeved on a plurality of matching portions 14'. A gap G' of 1.0-1.5 mm is provided between the annular portion 22' and each matching portion 14' when the plurality of clamping fingers 12' are not elastically deformed and opened, and the plurality of clamping fingers 12' are pressed against each other when they are elastically deformed and opened. The receiving cavity 221' receives the plurality of matching portions 14', the portions of the respective clamping fingers 12' connected to the base 11', and the base 11'. The annular portion 22' is spaced apart from the base 11' in the radial direction, and the outer peripheral surface 222' of the annular portion 22' is closer to the inner peripheral surface 121' of the corresponding clamping finger 12 in the radial direction relative to the outer peripheral surface 122' of each clamping finger 12'. The sleeve 23' protrudes outward from the side of the base plate 21' away from the annular portion 22' along the axial direction D, is connected with the through hole 211' of the base plate 21' and allows the mounting portion 13' to pass through and be exposed. The sleeve 23' is used to be fixed on the corresponding component 400 of the external milling equipment. Specifically, the sleeve 23' is used to have an interference fit with the sleeve 400b of the corresponding component 400 of the external milling equipment, which surrounds the main shaft 400a from the radial outside and is spaced apart.

[0009] exist Figure 1 and Figure 2 In the lens edge milling fixture 100' shown, because the outer circumferential surface 222' of the annular portion 22' is radially closer to the inner circumferential surface 121' of the corresponding clamping finger 12 relative to the outer circumferential surface 122' of each clamping finger 12', that is, the radial edge of the clamp 1' is farther from the outer circumferential surface 222' of the annular portion 22' of the base 2', the torque formed by the radial edge of the clamp 1' relative to the outer circumferential surface 222' of the annular portion 22' of the base 2' is relatively large. During operation, the multiple clamping fingers 12' are elastically deformed and opened, so that the annular portion 22' and the matching portions 14' are pressed against each other to form tension. This large torque causes the tension on the multiple clamping fingers 12' to be small and uneven, thereby making the clamping of the lens 200 by the multiple clamping fingers 12' of the clamp 1' unstable.

[0010] exist Figure 1 and Figure 2In the shown lens edge milling and fixing tooling 100', a gap G' of 1.0 - 1.5 mm is provided between the annular part 22' and each mating part 14' when the plurality of clamping finger parts 12' are not elastically deformed and opened. The gap G' of 1.0 - 1.5 mm makes the gap at the mating part of the fixture 1' and the base 2' too large. Because when the plurality of clamping finger parts 12' are elastically deformed and opened, the annular part 22' and each mating part 14' are pressed against each other to generate tension, this excessive gap makes the generated tension smaller and more uneven. Furthermore, the tension received by the plurality of clamping finger parts 12' is smaller and uneven, thus making the clamping of the plurality of clamping finger parts 12' of the fixture 1' on the lens 200 unstable.

[0011] The unstable clamping of the plurality of clamping finger parts 12' of the fixture 1' on the lens 200 has a great impact on the ETV of the lens 200 of the infrared material being edge-milled by the milling tool 300, which is not conducive to improving the qualified rate of the milling of the lens 200 of the infrared material.

[0012] In addition, the unstable clamping of the plurality of clamping finger parts 12' of the fixture 1' on the lens 200 causes an increase in the number of times and time of manual machine adjustment. Utility Model Content

[0013] In view of the problems existing in the background technology, an object of the present disclosure is to provide a lens edge milling and fixing tooling, which can make the clamping of the lens stable when edge-milling the lens.

[0014] Thus, a lens edge milling fixture is provided, which includes a fixture and a base; the fixture includes a base, a plurality of clamping fingers, a mounting portion, and a plurality of matching portions; the base is axially located between the plurality of clamping fingers and the mounting portion; the plurality of clamping fingers are spaced apart from each other by slits in the circumferential direction and spaced apart from each other in the radial direction, and are fixedly connected to the base at one end close to the base, and the plurality of clamping fingers are used to open through elastic deformation to accommodate the lens to be edge milled and to clamp the lens to be edge milled by the milling tool through the elastic restoring force generated by the elastic deformation; the mounting portion is used to be mounted on a corresponding component of an external milling device; each matching portion protrudes axially toward the base from the side of the corresponding clamping finger facing the base, and is radially spaced apart from the corresponding clamping finger from the outside at the portion connected to the base. ; The base includes a bottom plate, an annular portion and a sleeve; the bottom plate has a through hole that passes through in the axial direction; the annular portion and the sleeve are located on opposite sides of the bottom plate in the axial direction; the annular portion has a receiving cavity, the annular portion is sleeved on a plurality of matching portions, and a gap is arranged between the annular portion and each matching portion when the plurality of clamping fingers are not elastically deformed and opened, and a pressure contact is made with each other when the plurality of clamping fingers are elastically deformed and opened, and the receiving cavity receives a plurality of matching portions, the portions of the respective clamping fingers connected to the base, and the base, the annular portion is spaced apart from the base in the radial direction, and the outer circumferential surface of the annular portion is closer to the outer circumferential surface of the corresponding clamping finger relative to the inner circumferential surface of each clamping finger in the radial direction; the sleeve protrudes outward from the side of the bottom plate axially away from the annular portion, is connected with the through hole of the bottom plate, and is exposed for the mounting portion to pass through, and the sleeve is used to be fixed on the corresponding component of the external milling equipment.

[0015] The beneficial effects of the present disclosure are as follows: compared with the situation in the background technology where the outer circumferential surface of the annular portion is radially closer to the inner circumferential surface of the corresponding clamping finger relative to the outer circumferential surface of each clamping finger, in the lens edge milling and fixing tooling according to the present disclosure, the outer circumferential surface of the annular portion is radially closer to the outer circumferential surface of the corresponding clamping finger relative to the inner circumferential surface of each clamping finger, that is, the radial edge of the clamp is closer to the outer circumferential surface of the annular portion of the base, and the torque formed by the radial edge of the clamp relative to the outer circumferential surface of the annular portion of the base is smaller. During operation, multiple clamping fingers are elastically deformed and opened, so that the annular portion and the matching portions are pressed against each other to form tension. This smaller torque makes the tension on the multiple clamping fingers larger and more uniform, thereby making the multiple clamping fingers of the clamp clamp stably clamp the lens. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is an assembly cross-sectional view of the current lens edge milling fixture.

[0017] Figure 2 yes Figure 1 Schematic diagram of the working status of the lens edge milling fixture.

[0018] Figure 3It is an assembled three-dimensional view of a lens edge milling and fixing tooling according to the present disclosure.

[0019] Figure 4 It is Figure 3 a three-dimensional view from another angle of

[0020] Figure 5 It is an exploded three-dimensional view of a lens edge milling and fixing tooling according to the present disclosure.

[0021] Figure 6 It is Figure 5 an exploded three-dimensional view from another angle of

[0022] Figure 7 It is Figure 3 a three-dimensional sectional view of

[0023] Figure 8 It is Figure 3 a top view of

[0024] Figure 9 It is Figure 8 a sectional view taken along line A-A of

[0025] Figure 10 It is Figure 3 a schematic diagram of the working state of the lens edge milling and fixing tooling

[0026] Among them, the reference numerals are explained as follows.

[0027] 100' lens edge milling and fixing tooling 400 component

[0028] 1' fixture 400a spindle

[0029] 11' base 400b sleeve

[0030] 12' clamping finger 100 lens edge milling and fixing tooling 121' inner peripheral surface 1 fixture

[0031] 122' outer peripheral surface 11 base

[0032] 123' body part 12 clamping finger

[0033] 123a' side surface 121 inner peripheral surface

[0034] 124' finger head 122 outer peripheral surface

[0035] 125' root 123 body part

[0036] 13' mounting part 123a side surface

[0037] 13'1 internal thread 124 finger head

[0038] Root of the mating part 125 of 14'

[0039] End face of the concave part 125a of R'

[0040] Mounting part of the slit 13 of S'

[0041] Internal thread of the base 131 of 2'

[0042] Mating part of the bottom plate 14 of 21'

[0043] Through hole R concave part of 211'

[0044] Annular part S slit of 22'

[0045] Receiving cavity of the base 2 of 221'

[0046] Outer peripheral surface of the bottom plate 21 of 222'

[0047] Perforation of the through hole 211 of 223'

[0048] Sleeve 23 of the annular part 22'

[0049] Gap G of the receiving cavity 221'

[0050] Axial direction D of the outer peripheral surface 222'

[0051] Lens 200 of the perforation 223'

[0052] Milling and grinding tool 300 of the sleeve 23'

[0053] Gap G Detailed implementation mode

[0054] The accompanying drawings illustrate embodiments of the present disclosure, and it will be understood that the disclosed embodiments are merely examples of the present disclosure, and the present disclosure can be implemented in various forms. Therefore, the specific details disclosed herein should not be construed as limiting, but only as a basis for the claims and as a representative basis for teaching those of ordinary skill in the art to implement the present disclosure in various ways.

[0055] Refer to Figures 3 to 10 , according to the present disclosure, the lens edge milling and fixing tooling 100 includes a fixture 1 and a base 2.

[0056] The clamp 1 includes a base 11, a plurality of clamping fingers 12, a mounting portion 13, and a plurality of matching portions 14. The base 11 is located between the plurality of clamping fingers 12 and the mounting portion 13 along the axial direction D. The plurality of clamping fingers 12 are spaced apart from each other by slits S in the circumferential direction, spaced apart from each other in the radial direction, and fixedly connected to the base 11 at one end close to the base 11. The plurality of clamping fingers 12 are used to be opened by elastic deformation to accommodate the lens 200 to be edge-milled and to clamp the lens 200 to be edge-milled by the milling tool 300 by the elastic restoring force generated by the elastic deformation. The mounting portion 13 is used to be mounted on a corresponding component 400 of an external milling device. Each matching portion 14 protrudes toward the base 11 along the axial direction D from the side of the corresponding clamping finger 12 facing the base 11, and is spaced apart from the portion of the corresponding clamping finger 12 connected to the base 11 from the outside in the radial direction.

[0057] The base 2 includes a bottom plate 21, an annular portion 22 and a sleeve 23. The bottom plate 21 has a through hole 211 that passes through along the axial direction D. The annular portion 22 and the sleeve 23 are located on opposite sides of the bottom plate 21 along the axial direction D. The annular portion 22 has a receiving cavity 221, and the annular portion 22 is sleeved on a plurality of matching portions 14. A gap G is provided between the annular portion 22 and each matching portion 14 when the plurality of clamping fingers 12 are not elastically deformed and opened, and the plurality of clamping fingers 12 are pressed against each other when the plurality of clamping fingers 12 are elastically deformed and opened. The receiving cavity 221 receives the plurality of matching portions 14, the portions of the respective clamping fingers 12 connected to the base 11, and the base 11, and the annular portion 22 is spaced apart from the base 11 in the radial direction. The outer peripheral surface 222 of the annular portion 22 is closer to the outer peripheral surface 122 of the corresponding clamping finger 12 in the radial direction than the inner peripheral surface 121 of each clamping finger 12. The sleeve 23 protrudes outward from the side of the base plate 21 away from the annular portion 22 along the axial direction D, communicates with the through hole 211 of the base plate 21 and allows the mounting portion 13 to pass through and be exposed. The sleeve 23 is used to be fixed to a corresponding component 400 of an external milling device.

[0058] Compared with the situation in the background technology where the outer circumferential surface 222' of the annular portion 22 is radially closer to the inner circumferential surface 121' of the corresponding clamping finger 12 relative to the outer circumferential surface 122' of each clamping finger 12', in the lens edge milling and grinding fixture 100 according to the present invention, the outer circumferential surface 222 of the annular portion 22 is radially closer to the outer circumferential surface 122 of the corresponding clamping finger 12 relative to the inner circumferential surface 121 of each clamping finger 12, that is, the radial edge of the clamp 1 is closer to the outer circumferential surface 222 of the annular portion 22 of the base 2, and the torque formed by the radial edge of the clamp 1 relative to the outer circumferential surface 222 of the annular portion 22 of the base 2 is smaller. During operation, the multiple clamping fingers 12 are elastically deformed and opened, so that the annular portion 22 and the matching portions 14 are pressed against each other to form tension. This smaller torque makes the tension on the multiple clamping fingers 12 larger and more uniform, thereby making the multiple clamping fingers 12 of the clamp 1 clamp the lens 200 stably.

[0059] The stable clamping of the lens 200 by the multiple clamping fingers 12 of the fixture 1 ensures the ETV of the lens 200 milled at the edge by the milling tool 300, which is beneficial to improving the qualification rate of the milling of the lens 200.

[0060] In addition, the stable clamping of the lens 200 by the multiple clamping fingers 12 of the fixture 1 reduces the number of times and time of manual machine adjustment.

[0061] In one example, the gap G is in the range of 0.5 - 0.8 mm. Compared with the gap G' of 1.0 - 1.5 mm in the background art, this reduces the gap at the mating portion of the fixture 1 and the base 2. Because when the multiple clamping fingers 12 elastically deform and open, the annular portion 22 and the respective mating portions 14 press against each other to generate tension. This reduced gap makes the generated tension larger and more uniform. As a result, the multiple clamping fingers 12 of the fixture 1 are subjected to a larger and uniform tension, thereby making the clamping of the lens 200 by the multiple clamping fingers 12 of the fixture 1 stable. Similarly, the stable clamping of the lens 200 by the multiple clamping fingers 12 of the fixture 1 ensures the ETV of the lens 200 milled at the edge by the milling tool 300, which is beneficial to improving the qualification rate of the milling of the lens 200. In addition, the stable clamping of the lens 200 by the multiple clamping fingers 12 of the fixture 1 reduces the number of times and time of manual machine adjustment.

[0062] As Figure 7 shown, in one example, each clamping finger 12 includes a body portion 123, a finger head portion 124, and a root portion 125. The inner circumferential surface of the finger head portion 124 constitutes the inner circumferential surface 121 of the clamping finger 12. The outer circumferential surface of the body portion 123 and the outer circumferential surface of the finger head portion 124 constitute the outer circumferential surface 122 of the clamping finger 12. The finger head portion 124 and the root portion 125 are located on both sides of the body portion 123 along the axial direction D and respectively protrude from the body portion 123 along the axial direction D. The finger head portions 124 of the multiple clamping fingers 12 and the body portion 123 enclose a recess R for receiving and fixing the lens 200 to be edge milled. The slit S penetrates through the finger head portion 124, the body portion 123, and the root portion 125 along the axial direction D. The end surface 125a of the root portion 125 along the axial direction D is fixedly connected to the base portion 11. The mating portion 14 protrudes from the side surface 123a of the body portion 123 along the axial direction D facing the base portion 11 towards the base portion 11 and is spaced from the root portion 125 of the corresponding clamping finger 12 in the radial direction.

[0063] In Figures 3 to 10 the example, the number of the multiple clamping fingers 12 is six, and the six clamping fingers 12 are arranged at equal intervals in the circumferential direction. In an alternative example, the number of the multiple clamping fingers 12 can be less than six or more than six.

[0064] As Figure 4 、 Figure 6 、 Figure 7 、Figure 9 and Figure 10 As shown in Figure 10 , in one example, the mounting portion 13 is provided with an internal thread 131 for engaging with an external threaded portion of a rotatable main shaft 400a of a corresponding member 400 of a milling device.

[0065] As Figures 4 to 7 , Figure 9 and Figure 10 As shown in Figure 10 , in one example, the annular portion 22 is provided with a plurality of radially penetrating perforations 223. The sleeve 23 is used for interference fit with a sleeve 400b of a corresponding member 400 of an external milling device that surrounds and is spaced from the main shaft 400a radially outward. The perforations 223 are used for inserting a wrench (not shown) to remove the base 2 from the sleeve 400b of the corresponding member 400 of the external milling device.

[0066] As Figures 4 to 10 As shown in Figures 4 to 10 , in one example, the fixture 1 and the base 2 are each an integral single piece.

[0067] As shown in 7 Figure 9 and Figure 10 As shown in Figure 10 , the fixture 1 and the base 2 are coaxial, which ensures that when the plurality of clamping fingers 12 elastically open, the plurality of clamping fingers 12 are uniformly deformed under force, ensuring that the lens 200 is centered and stable.

[0068] The lens edge milling and fixing tooling 100 according to the present disclosure is applicable not only to the lens 200 made of infrared material, but also to the lens 200 made of non-infrared material.

[0069] In addition, the materials of the fixture 1 and the base 2 can be, but are not limited to, plastics.

[0070] Multiple exemplary embodiments are described using the detailed description above, but the present disclosure is not intended to be limited to the explicitly disclosed combinations. Therefore, unless otherwise stated, the various features disclosed herein can be combined together to form multiple additional combinations that are not shown for the sake of brevity.

Claims

1. A lens edge milling and fixing tooling, characterized in that the lens edge milling and fixing tooling (100) includes a fixture (1) and a base (2); the fixture (1) includes a base portion (11), a plurality of clamping fingers (12), a mounting portion (13), and a plurality of mating portions (14); the base portion (11) is located axially (D) between the plurality of clamping fingers (12) and the mounting portion (13); the plurality of clamping fingers (12) are spaced from each other circumferentially by a slit (S), spaced from each other radially, and fixedly connected to the base portion (11) at one end close to the base portion (11). The plurality of clamping fingers (12) are used to open by elastic deformation to receive the lens (200) to be edge-milled and clamp the lens (200) to be edge-milled by a milling tool (300) by the elastic restoring force generated by the elastic deformation; the mounting portion (13) is used to be mounted on a corresponding component (400) of an external milling device; each mating portion (14) projects axially (D) toward the base portion (11) from the side surface of the corresponding clamping finger (12) facing the base portion (11), and is spaced from the portion of the corresponding clamping finger (12) connected to the base portion (11) radially on the outside; the base (2) includes a bottom plate (21), an annular portion (22), and a sleeve (23); the bottom plate (21) has a through hole (211) penetrating axially (D); the annular portion (22) and the sleeve (23) are located on opposite sides of the bottom plate (21) axially (D); the annular portion (22) has a receiving cavity (221). The annular portion (22) is sleeved on the plurality of mating portions (14). A gap (G) is provided between the annular portion (22) and each mating portion (14) when the plurality of clamping fingers (12) are not elastically deformed and opened, and they are pressed against each other when the plurality of clamping fingers (12) are elastically deformed and opened. The receiving cavity (221) receives the plurality of mating portions (14), the portions of their respective clamping fingers (12) connected to the base portion (11), and the base portion (11). The annular portion (22) is spaced from the base portion (11) radially. The outer peripheral surface (222) of the annular portion (22) is closer to the outer peripheral surface (122) of the corresponding clamping finger (12) radially relative to the inner peripheral surface (121) of each clamping finger (12); the sleeve (23) projects axially (D) outward from the side of the bottom plate (21) away from the annular portion (22), communicates with the through hole (211) of the bottom plate (21), and allows the mounting portion (13) to pass through and be exposed. The sleeve (23) is used to be fixed on a corresponding component (400) of an external milling device.

2. The lens edge milling and fixing tooling according to claim 1, characterized in that the gap (G) is in the range of 0.5 - 0.8 mm.

3. The lens edge milling and fixing tooling according to claim 1, characterized in that each clamping finger (12) includes a body portion (123), a finger head portion (124), and a root portion (125); the inner peripheral surface of the finger head portion (124) constitutes the inner peripheral surface (121) of the clamping finger (12); The outer peripheral surface of the main body portion (123) and the outer peripheral surface of the finger portion (124) constitute the outer peripheral surface (122) of the clamping finger portion (12); The finger portion (124) and the root portion (125) are located on both sides of the main body portion (123) along the axial direction (D) and protrude from the main body portion (123) along the axial direction (D) respectively; The finger portions (124) of the plurality of clamping finger portions (12) and the main body portion (123) enclose a concave portion (R) for receiving and fixing the lens (200) to be edge milled; The slit (S) penetrates through the finger portion (124), the main body portion (123) and the root portion (125) along the axial direction (D); The end surface (125a) of the root portion (125) in the axial direction (D) is fixedly connected to the base portion (11); The engaging portion (14) protrudes from the side surface (123a) of the main body portion (123) facing the base portion (11) along the axial direction (D) toward the base portion (11) and is spaced from the root portion (125) of the corresponding clamping finger portion (12) in the radial direction.

4. The lens edge milling and fixing tooling according to claim 1, wherein The number of the plurality of clamping finger portions (12) is six, and the six clamping finger portions (12) are arranged at equal intervals in the circumferential direction.

5. The lens edge milling and fixing tooling according to claim 1, wherein The mounting portion (13) is provided with an internal thread (131) for engaging the external thread portion of the rotatable main shaft (400a) of the corresponding component (400) of the external milling equipment.

6. The lens edge milling and fixing tooling according to claim 4, wherein The annular portion (22) is provided with a plurality of through holes (223) penetrating in the radial direction; The sleeve (23) is used for an interference fit with the sleeve (400b) of the corresponding component (400) of the external milling equipment that surrounds and is spaced from the main shaft (400a) from the radial outside; The through hole (223) is used for inserting a wrench to remove the base (2) from the sleeve (400b) of the corresponding component (400) of the external milling equipment.

7. The lens edge milling and fixing tooling according to claim 1, wherein The fixture (1) and the base (2) are each an integral single piece.

8. The lens edge milling and fixing tooling according to claim 1, wherein The fixture (1) and the base (2) are coaxial.

Images