Clamping fixture for positioning and fixing lens

Abstract

The utility model relates to the field of lens processing, in particular to a clamping fixture for positioning and fixing a lens. According to the scheme, the device specifically comprises a base and a worm wheel rotationally connected to the base, a worm is rotationally arranged on one side, corresponding to the side portion of the worm wheel, of the base in a penetrating mode, and a worm wheel matched with the worm is arranged in the circumferential direction of the worm wheel and corresponds to the worm; the worm is matched with the gear, so that the rotating stability and accuracy of the worm gear can be ensured; by rotating the worm, the angle of the worm gear can be accurately adjusted, then the angle of the lens is adjusted, and the requirements for different angles in the machining process are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of lens processing, specifically relates to a kind of for lens positioning and fixed mounting fixture. BACKGROUND

[0002] In the field of lens processing, whether it is accurate to measure lens size, or chamfer processing is carried out to lens, it cannot do without special fixture to firmly fix lens. Traditional fixture is mainly composed of base and fixed sleeve two parts. Base is generally made of stable heavy material, and the purpose is to provide sufficient stability and support force in processing.

[0003] Fixed sleeve is arranged on base, and it is generally hollow cylinder, and is provided with clamping groove inside. When operating, operator needs to carefully align lens with clamping groove and gently clamp, to ensure that lens is fixed in position during processing.

[0004] However, this traditional fixture structure has many inconveniences in actual use. When lens needs to be adjusted or rotated to meet the processing needs of different angles, operator can only rotate base as a whole. Since base is relatively heavy, this operation not only consumes physical strength, but also is difficult to accurately control rotation angle. Especially when fine adjustment or high-precision processing is carried out, inaccurate angle control can possibly become a key problem affecting processing quality. SUMMARY

[0005] To solve the above problems, the utility model discloses a kind of for lens positioning and fixed mounting fixture.

[0006] To achieve the above purpose, the utility model provides the following technical scheme: a kind of for lens positioning and fixed mounting fixture, including base and worm wheel rotationally connected on the base, the side of the base corresponds the side of the worm wheel and can be rotatably inserted with worm, the worm is engaged transmission with the worm wheel, the top of the worm wheel is provided with fixed sleeve, the fixed sleeve can be nested together with adjustable sleeve, recess is in the fixed sleeve and adjustable sleeve, the recess is used to cooperate with lens clamping.

[0007] In a possible implementation, the inner side of the recess is uniformly distributed with a plurality of vertically arranged guide protrusions along its circumferential direction, and the guide protrusions are used to contact and cooperate with the side of lens.

[0008] The outer periphery of the adjustable sleeve is provided with a slot for inserting and cooperating with the guide protrusion on the fixed sleeve, and when the adjustable sleeve is embedded in the fixed sleeve, the guide protrusion is inserted into the slot.

[0009] In addition, two ends of the adjusting sleeve are open, a groove bottom surface of the groove in the fixing sleeve is rotatably provided with an eccentric shaft, one end of the eccentric shaft extends to the outside of the fixing sleeve and is connected with a push rod, and under normal circumstances, the top end of the eccentric shaft is flush with the groove bottom surface.

[0010] The worm gear is provided with a containing groove corresponding to the eccentric shaft, and the eccentric shaft is rotatably arranged in the containing groove.

[0011] The scheme of the embodiment of the application specifically comprises a base, and a worm gear rotatably connected to the base, a worm is rotatably arranged on one side of the base corresponding to the side of the worm gear, and the worm gear is provided with a worm gear matched with the worm in the circumferential direction; the cooperation of the worm and the gear can ensure the stability and accuracy of the rotation of the worm gear; by rotating the worm, the angle of the worm gear can be accurately adjusted, and the angle of the lens is adjusted, thereby meeting the requirements of different angles in the processing process. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is a perspective view of the clamp in the embodiment 1 of the application;

[0013] Figure 2 It is a perspective view of the clamp in the embodiment 2 of the application;

[0014] Figure 3 It is a top view of Figure 2 ;

[0015] Figure 4 It is a position schematic view of the buffer pad in the clamp in the embodiment 3 of the application;

[0016] Figure 5 It is a position schematic view of the metal pad in the embodiment 3 of the application. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical scheme and advantages of the application more clear, the application will be further described in detail below with reference to the drawings.

[0018] The terms used in the following embodiments are only for the purpose of describing the specific embodiments and are not intended to be limiting on the application. As used in the specification and the appended claims of the application, the singular forms "a," "an," and "the" are intended to include both the singular and plural forms, e.g., "one or more," unless the context clearly indicates otherwise.

[0019] Reference to "one embodiment" or "some embodiments" or "one implementation" or "some implementations" etc. in the present description means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. The appearances of the phrases "in one embodiment" or "in some embodiments" or "in other embodiments" or "in still other embodiments" or "in yet other embodiments" etc. in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily referring to some, but not all embodiments, unless otherwise indicated. The terms "including", "comprising", "having" and variations thereof mean "including but not limited to", unless expressly specified otherwise.

[0020] Embodiment 1: As shown in the figure, a holding fixture for lens positioning and fixing, comprising a base 100, and a worm wheel 101 rotatably connected to the base 100, a worm 111 rotatably penetrating the side of the base 100 corresponding to the side of the worm wheel 101, the worm 111 being in meshing transmission with the worm wheel 101. The worm and the worm wheel are in meshing transmission with each other, forming a worm and worm wheel transmission mechanism. This kind of transmission mechanism has stable transmission and self-locking property. By rotating the worm 111, the worm wheel 101 can be driven to rotate, thereby realizing angle adjustment of the components connected with the worm wheel. Figure 1 The top end of the worm wheel 101 is provided with a fixed sleeve 112, which can be separably nested with an adjusting sleeve 300, the fixed sleeve 112 and the adjusting sleeve 300 both having a groove 200 for clamping the lens. The main function of the groove is to clamp the lens. When the lens needs to be clamped, the lens is placed in the groove, and the shape and size of the groove can preliminarily position and fix the lens to prevent the lens from moving in the horizontal direction.

[0021] The fixed sleeve 112 is installed at the top end of the worm wheel 101 and rotates with the worm wheel, and it is one of the important components for clamping the lens. The adjusting sleeve 300 can be separably nested with the fixed sleeve 112, and the separable design makes the fixture flexible to adjust according to the diameters of different lenses. When different diameter lenses need to be clamped, only the appropriate adjusting sleeve needs to be replaced, so that the fixture can adapt to lenses of different sizes, greatly improving the versatility and applicability of the fixture.

[0022]

[0023] ​In one possible implementation, the inner side of the groove 200 is uniformly distributed with a plurality of vertically arranged guide ribs 301 along its circumference, which are used to contact and fit with the side of the lens. The guide ribs play a guiding role in the process of lens clamping into the groove, ensuring that the lens can accurately enter the groove and be in the correct position. At the same time, when the lens is clamped, the guide ribs contact and fit with the side of the lens, further enhancing the stability of the lens in the vertical and circumferential directions, preventing the lens from shaking or tilting.

[0024] The outer periphery of the adjusting sleeve 300 is provided with a slot 302 for insertion and fitting with the guide rib 301 on the fixed sleeve 112, and when the adjusting sleeve 300 is embedded in the fixed sleeve 112, the guide rib 301 is inserted into the slot 302. When the adjusting sleeve 300 is embedded in the fixed sleeve 112, the guide rib 301 is inserted into the slot 302. This kind of insertion and fitting structure not only ensures the accurate nesting between the adjusting sleeve and the fixed sleeve, but also increases the stability of the connection between the two, so that the adjusting sleeve and the fixed sleeve can be tightly combined and work together during clamping the lens and adjusting the angle.

[0025] During the processing or detection of the lens, the angle of the lens needs to be adjusted. By rotating the worm 111, the worm gear is driven to rotate the worm gear 101, and then the fixed sleeve 112, the adjusting sleeve 300 and the lens clamped therein are rotated together to the required angle to meet the requirements of actual operation.

[0026] Example 2: see Figures 2-4 On the basis of Example 1, this embodiment further provides a rotatable eccentric shaft 113 at the bottom surface of the groove 200. Specifically, the two ends of the adjusting sleeve 300 are open, the bottom surface of the groove 200 in the fixed sleeve 112 is rotatably provided with an eccentric shaft 113, one end of the eccentric shaft 113 extends to the outside of the fixed sleeve 112 and is connected with a push rod 114; in normal state, the top end of the eccentric shaft 113 is flush with the bottom surface of the groove 200; to avoid interfering with the normal placement and processing of the lens when the lens is placed in the groove. When the operator needs to take out the lens, the eccentric shaft 113 can be rotated by pushing the push rod 114. Due to the characteristics of the eccentric shaft, when it rotates, its top end will protrude relative to the bottom surface, thereby gently lifting the lens placed in the groove. The design of the eccentric shaft can avoid the lens being clamped too tightly in the groove and being difficult to take out.

[0027] In a specific structure, the worm wheel 101 is provided with a receiving groove 115 corresponding to the eccentric shaft 113, and the eccentric shaft 113 is rotatably arranged in the receiving groove 115. By rotatably arranging the eccentric shaft 113 in the receiving groove 115, the friction between the eccentric shaft and other components can be reduced, and the rotation resistance can be reduced.

[0028] Embodiment 3: see Figures 4-5 In addition, the recess 200 is provided with a buffer pad 116 which is detachable and covers the receiving groove 115. The buffer pad can prevent the lens from being damaged during processing,

[0029] In combination with the content of the above embodiment 2, the bottom of the buffer pad 116 is provided with a metal gasket 117 which covers the receiving groove 115. The metal gasket 117 covers the receiving groove 115 and directly contacts the eccentric shaft. When the eccentric shaft is rotated, the metal gasket 117 can effectively transmit the ejection force generated by the eccentric shaft, so as to ensure that the lens placed on the buffer pad 116 can be smoothly and easily ejected.

[0030] The top end of the recess 200 is provided with a chamfered outer periphery. The chamfered design makes the top end of the recess 200 outwardly expand, so as to facilitate the lens to be clamped in the recess 200.

[0031] The technical means disclosed in the utility model scheme is not only limited to the technical means disclosed in the above-mentioned embodiments, but also includes the technical scheme composed of any combination of the above technical features. It should be noted that for ordinary skilled persons in the art, without departing from the principle of the utility model, some improvements and refinements can be made, and these improvements and refinements are also considered as the protection scope of the utility model.

Claims

1. A clamping fixture for positioning and fixing lenses, characterized in that: The device includes a base (100) and a worm gear (101) rotatably connected to the base (100). A worm (111) is rotatably inserted on one side of the base (100) corresponding to the side of the worm gear (101). The worm (111) meshes with the worm gear (101) for transmission. A fixing sleeve (112) is provided at the top of the worm gear (101). The fixing sleeve (112) can be nested together with an adjusting sleeve (300) in a separable manner. Both the fixing sleeve (112) and the adjusting sleeve (300) have a groove (200) for engaging with a lens.

2. The mounting clamp for positioning and fixing lenses as described in claim 1, characterized in that: The inner side of the groove (200) is evenly distributed with a plurality of vertically arranged guide protrusions (301) along its circumference. The guide protrusions (301) are used to contact and cooperate with the side of the lens.

3. The mounting clamp for positioning and fixing lenses as described in claim 2, characterized in that: The outer periphery of the adjusting sleeve (300) is provided with a slot (302) for inserting and engaging with the guide protrusion (301) on the fixed sleeve (112). When the adjusting sleeve (300) is embedded in the fixed sleeve (112), the guide protrusion (301) is inserted into the slot (302).

4. The mounting clamp for positioning and fixing lenses as described in claim 1, characterized in that: The two ends of the adjusting sleeve (300) are open. An eccentric shaft (113) is rotatably provided on the bottom surface of the groove (200) in the fixing sleeve (112). One end of the eccentric shaft (113) extends to the outside of the fixing sleeve (112) and is connected to the push rod (114). Under normal conditions, the top end of the eccentric shaft (113) is flush with the bottom surface of the groove (200).

5. A clamping fixture for positioning and fixing lenses as described in claim 4, characterized in that: The worm gear (101) has a receiving groove (115) corresponding to the eccentric shaft (113), and the eccentric shaft (113) is rotatably disposed in the receiving groove (115).

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