CN216173846U - Clamping mechanism and lens processing device - Google Patents

Abstract

The utility model discloses a clamping mechanism and a lens processing device, and relates to the technical field of lens processing. The clamping mechanism provided by the utility model can adjust and control the pressure of the to-be-fixed part, and is simple and efficient to operate.

Description

Clamping mechanism and lens processing device

Technical Field

The utility model relates to the technical field of lens processing, in particular to a clamping mechanism and a lens processing device.

Background

After the optical lens is glued, the gluing process is performed on the edge of the gluing assembly. When the gluing assembly is placed on equipment for gluing, the two sides of the gluing assembly are always in a rotating state after being abutted by the wafer.

The existing gluing component clamping mechanisms are mainly divided into two types, one type is a spring pressure mechanism, a spring directly props against the surface of a gluing component, and when the gluing component is taken and placed, if improper operation of the mechanism easily causes sudden release of spring potential energy, the gluing component is damaged; the other is a screw tightening mechanism, which adopts a screw to abut against the surface of the gluing component, the pressure of the mechanism is not easy to control and adjust, the efficiency is low, and the risk of damaging the gluing component exists.

However, the interlayer in the middle of the glue assembly is a special material and cannot withstand too much pressure. Therefore, there is a need for a clamping mechanism that can both regulate pressure and prevent damage to the glue assembly.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a clamping mechanism and a lens processing device, which can adjust and control the pressure of a gluing component and have high adjusting efficiency.

The embodiment of the utility model is realized by the following steps:

the utility model provides a clamping mechanism, which comprises a base, support on the base and hold subassembly and pressure assembly, pressure assembly includes the push rod, spring and pressure regulating knob, be equipped with the perforating hole in the pressure regulating knob, the one end of pressure regulating knob is equipped with the separation blade in order to plug the one end of perforating hole, the other end is equipped with first screw thread, the spring sets up in the perforating hole, the one end and the separation blade of spring support and hold, the other end supports with the push rod and holds, be equipped with on the base with first screw thread complex second screw thread in order to close soon with the pressure regulating knob and compress spring, support holding the face of holding the subassembly and the relative setting of the application of force face of push rod, treat the mounting centre gripping between supporting face and application of force face, the pressure regulating knob is exerted on treating the mounting with the adjustment application of force face on the base through revolving.

Optionally, as an implementable mode, one end of the inner wall of the through hole, which is far away from the first thread, is provided with a third thread, the periphery of the separation blade is provided with a fourth thread matched with the third thread, and the separation blade is screwed into the through hole of the pressure regulating knob.

Optionally, as an implementable mode, be equipped with the guide cylinder on the base, the guide cylinder sets up with the pressure regulating knob is coaxial, and the push rod wears to locate in the guide cylinder and slides in the guide cylinder, and the second screw thread is located the tip of guide cylinder.

Optionally, as an implementable manner, the abutting assembly includes an abutting rod disposed on the base and an abutting disc connected to an end of the abutting rod and perpendicular to the abutting rod, and the abutting surface is located on a side of the abutting disc far from the abutting rod.

Optionally, as an implementable manner, a positioning block is slidably disposed on an outer wall of the holding rod, a positioning groove is disposed on one side of the positioning block facing the holding disc, and a cross-sectional shape of the positioning groove along a direction perpendicular to an axis of the holding rod is matched with a shape of a stressed surface of the to-be-fixed member.

Optionally, as an implementable mode, the first thread is an internal thread arranged at one end of the through hole, and the second thread is an external thread arranged on the outer wall of the guide cylinder, or the first thread is an external thread arranged on the outer wall of the pressure regulating knob, and the second thread is an internal thread arranged on the inner wall of the guide cylinder.

Optionally, as an implementable mode, the through hole includes a first accommodation hole and a second accommodation hole that are connected to each other and coaxial, the first thread is disposed on an inner wall of the first accommodation hole, the spring is disposed in the second accommodation hole, the end of the push rod is provided with a limiting piece, the limiting piece is disposed in the second accommodation hole and abuts against the spring, and a diameter of the limiting piece is greater than a diameter of the first accommodation hole.

Optionally, as an implementable mode, the base is provided with at least two supporting arms at intervals, the supporting arms are provided with supporting holes, the at least two supporting holes are coaxially arranged, the supporting holes are internally provided with first bearings, and the abutting rod is arranged on the inner rings of the at least two first bearings.

Optionally, as an implementable manner, the end of the push rod is provided with a pressure disc, the pressure disc is connected with the push rod through a second bearing, and the force application surface is located on one side of the pressure disc far away from the push rod.

A lens processing apparatus comprising the clamping mechanism of any one of the above.

The embodiment of the utility model has the beneficial effects that:

the utility model provides a clamping mechanism which comprises a base, a propping assembly and a pressure assembly, wherein the propping assembly and the pressure assembly are arranged on the base, the pressure assembly comprises a push rod, a spring and a pressure regulating knob, a through hole is formed in the pressure regulating knob, a blocking piece is arranged at one end of the pressure regulating knob to block one end of the through hole, a first thread is arranged at the other end of the pressure regulating knob, the spring is arranged in the through hole, one end of the spring props against the blocking piece, the other end of the spring props against the push rod, a second thread matched with the first thread is arranged on the base to be screwed with the pressure regulating knob to compress the spring, a propping surface of the propping assembly is opposite to a force application surface of the push rod, a to-be-fixed member is clamped between the propping surface and the force application surface, and the pressure regulating knob is screwed on the base to regulate the pressure application surface to the to-be-fixed member. The clamping mechanism can adjust and control the pressure of the to-be-fixed part, and only the pressure adjusting knob needs to be screwed on the base completely when the clamping mechanism is used, so that the clamping mechanism is simple and efficient to operate.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of a clamping mechanism according to an embodiment of the present invention;

FIG. 2 is a schematic view of a clamping mechanism clamping a member to be fastened according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a pressure assembly according to an embodiment of the present invention;

fig. 4 is a partially enlarged schematic view of a portion a in fig. 2.

Icon: 100-a clamping mechanism; 110-a base; 111-a second thread; 112-a guide cylinder; 113-a support arm; 114-a first bearing; 121-a holding surface; 122-a holding rod; 123-holding disc; 124-positioning blocks; 125-positioning groove; 130-a pressure assembly; 131-a push rod; 132-a spring; 133-a pressure regulating knob; 1341-a first receiving hole; 1342-a second receiving hole; 135-baffle plate; 136-a first thread; 137-force application surface; 138-limiting piece; 139-pressure disk; 140-a second bearing; 200-waiting for fixing.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "vertical", "horizontal", "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the products of the present invention are used, and are only used for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 and fig. 2, the present embodiment provides a clamping mechanism 100, which includes a base 110, a propping assembly and a pressure assembly 130 disposed on the base 110, the pressure assembly 130 includes a push rod 131, a spring 132 and a pressure adjusting knob 133, a through hole is disposed in the pressure adjusting knob 133, a stopper 135 is disposed at one end of the pressure adjusting knob 133 to block one end of the through hole, the other end is provided with a first thread 136, the spring 132 is arranged in the through hole, one end of the spring 132 abuts against the baffle 135, the other end abuts against the push rod 131, the base 110 is provided with a second thread 111 matched with the first thread 136 to be screwed with the pressure regulating knob 133 to compress the spring 132, the abutting surface 121 of the abutting assembly is arranged opposite to the force application surface 137 of the push rod 131, the to-be-fixed member 200 is clamped between the abutting surface 121 and the force application surface 137, and the pressure regulating knob 133 is screwed on the base 110 to regulate the pressure applied by the force application surface 137 on the to-be-fixed member 200.

The clamping mechanism 100 includes a base 110, a propping component and a pressure component 130, the base 110 is used for supporting the propping component and the pressure component 130, the propping component and the pressure component 130 are respectively provided with a propping surface 121 and a force application surface 137, the propping surface 121 and the force application surface 137 are oppositely arranged, and the to-be-fixed member 200 is clamped by adjusting the distance between the propping surface 121 and the force application surface 137. The pressure assembly 130 comprises a push rod 131, a spring 132 and a pressure regulating knob 133, wherein one end of the pressure regulating knob 133 is provided with a first thread 136, the other end of the pressure regulating knob 133 is provided with a baffle 135, and the spring 132 is positioned in a through hole of the pressure regulating knob 133. The spring 132 extends and contracts in the same direction as the axial direction of the through hole, and one end of the spring 132 abuts against the push rod 131 and the other end abuts against the stopper 135. The base 110 is provided with a second thread 111 which can be in thread fit with the first thread 136, the pressure regulating knob 133 can be screwed on the base 110 through the fit between the first thread 136 and the second thread 111, the compression amount of the spring 132 is changed through the screwing distance between the first thread 136 and the second thread 111, the resilience of the spring 132 is adjusted, and the pressure exerted on the member to be fixed 200 by the force applying surface 137 is further changed.

When the device is used, the abutting surface 121 on the abutting assembly is kept still, the to-be-fixed piece 200 is fixed on the abutting surface 121, and the push rod 131 moves along a straight line and gradually approaches to the to-be-fixed piece 200. When the force application surface 137 of the push rod 131 just contacts the force bearing surface of the member to be fixed 200, the first thread 136 comes into contact with the second thread 111. Subsequently, the pressure regulating knob 133 is rotated to be screwed on the base 110, and since the end of the push rod 131 contacting with the member to be fixed 200 is kept stationary, during the screwing process, the other end of the push rod 131 compresses the spring 132, the spring 132 generates a resilience force after being pressed, and the resilience force reacts on the push rod 131 and is transmitted to the surface of the member to be fixed 200 through the push rod 131 to press the member to be fixed 200. When the first thread 136 and the second thread 111 are completely screwed, the pressure applied by the pressure assembly 130 to the fixing member 200 reaches a maximum value. By adjusting the lengths of the first thread 136, the second thread 111 and the push rod 131, the pressure applied by the pressure assembly 130 on the to-be-fixed member 200 can be adjusted and the maximum pressure value can be kept constant. When the fixing piece is used, only the first thread 136 and the second thread 111 need to be screwed completely, the operation is simple and efficient, and meanwhile, the damage to the fixing piece 200 caused by overlarge pressure is avoided.

As described above, the clamping mechanism 100 includes the base 110, the abutting assembly disposed on the base 110, and the pressure assembly 130, the pressure assembly 130 includes the push rod 131, the spring 132, and the pressure adjusting knob 133, a through hole is disposed in the pressure adjusting knob 133, one end of the pressure adjusting knob 133 is provided with the stopper 135 to seal one end of the through hole, the other end is provided with the first thread 136, the spring 132 is disposed in the through hole, one end of the spring 132 abuts against the stopper 135, the other end abuts against the push rod 131, the base 110 is provided with the second thread 111 engaged with the first thread 136 to be engaged with the pressure adjusting knob 133 and compress the spring 132, the abutting surface 121 of the abutting assembly is disposed opposite to the force applying surface 137 of the push rod 131, the to-be-fixed member 200 is clamped between the abutting surface 121 and the force applying surface 137, and the pressure adjusting knob 133 is screwed on the base 110 to adjust the pressure applied by the force applying surface 137 on the to-be-fixed member 200. The clamping mechanism 100 can adjust and control the pressure of the to-be-fixed member 200, and only the pressure adjusting knob 133 needs to be screwed on the base 110 completely when the clamping mechanism is used, so that the operation is simple and efficient.

Referring to fig. 3, in an optional manner of the embodiment of the present invention, the through hole includes a first receiving hole 1341 and a second receiving hole 1342 that are connected to each other and are coaxial, the first thread 136 is disposed on an inner wall of the first receiving hole 1341, the spring 132 is disposed in the second receiving hole 1342, a limiting piece 138 is disposed at an end of the push rod 131, the limiting piece 138 is disposed in the second receiving hole 1342 and abuts against the spring 132, and a diameter of the limiting piece 138 is greater than a diameter of the first receiving hole 1341.

The first receiving hole 1341 and the second receiving hole 1342 are coaxially connected to each other, a diameter of the first receiving hole 1341 is smaller than a diameter of the second receiving hole 1342, the first thread 136 is disposed on an inner wall of the first receiving hole 1341 and is an internal thread, and at this time, the second thread 111 disposed on the base 110 should be an external thread. The spring 132 is disposed in the second receiving hole 1342, a limiting piece 138 is disposed at an end of the push rod 131 connected to the spring 132, and the limiting piece 138 is disposed in the second receiving hole 1342 and has a diameter larger than that of the first receiving hole 1341. One end of the spring 132 abuts against the limiting piece 138, and the other end abuts against the blocking piece 135. The limiting piece 138 is abutted against a transition wall between the first accommodating hole 1341 and the second accommodating hole 1342 under the resilient force of the spring 132, so that one end of the push rod 131 is always located in the second accommodating hole 1342.

Optionally, in an implementation manner of the embodiment of the present invention, a third thread is disposed at an end of the inner wall of the through hole, the end being away from the first thread 136, a fourth thread matching with the third thread is disposed on the outer periphery of the blocking piece 135, and the blocking piece 135 is screwed into the through hole of the pressure regulating knob 133 to form the compressible spring 132.

By adjusting the screwing length between the third thread and the fourth thread, the relative position between the blocking piece 135 and the pressure adjusting knob 133 can be changed. The flap 135 is used to compress the spring 132 and provide a biasing force on the spring 132. The pretension pressure is used to apply pressure to the member to be fixed 200 through the push rod 131 after the force application surface 137 is contacted with the member to be fixed 200. The greater the length of the twist between the third thread and the fourth thread, the greater the pretensioning pressure. At this time, there are two pressure sources applied to the member to be fixed 200, one is the pre-tightening pressure of the spring 132 caused by the flap 135, and the other is the resilience of the spring 132 caused by the pressure-adjusting knob 133 screwed onto the base 110 to further compress the spring 132. The pressure applied to the member to be fixed 200 can also be adjusted and controlled by adjusting the relative position between the flap 135 and the pressure adjusting knob 133.

Optionally, in an implementation manner of the embodiment of the present invention, a guide cylinder 112 is disposed on the base 110, the guide cylinder 112 is disposed coaxially with the pressure regulating knob 133, the push rod 131 is disposed through the guide cylinder 112 and slides in the guide cylinder 112, and the second thread 111 is located at an end of the guide cylinder 112.

In order to facilitate the linear motion of the push rod 131 and limit the push rod 131, the base 110 is provided with a guide cylinder 112, the guide cylinder 112 is hollow, and the push rod 131 penetrates through the guide cylinder 112 and slides in the guide cylinder 112. The push rod 131 has two ends located at two sides of the guide cylinder 112, one end being a force application surface 137 and the other end abutting against the spring 132.

The second screw 111 is provided at an end of the guide cylinder 112 facing the pressure adjusting knob 133, and the second screw 111 is a male screw provided on an outer wall of the guide cylinder 112 or a female screw provided on an inner wall of the guide cylinder 112.

Alternatively, in an achievable manner of the embodiment of the present invention, the first thread 136 is an internal thread provided at one end of the through hole, and the second thread 111 is an external thread provided on the outer wall of the guide cylinder 112, or the first thread 136 is an external thread provided on the outer wall of the pressure adjusting knob 133, and the second thread 111 is an internal thread provided on the inner wall of the guide cylinder 112.

When the first thread 136 is an internal thread, the internal thread is disposed at an end of the through hole away from the stop piece 135, and correspondingly, the second thread 111 is an external thread disposed on an outer wall of the guide cylinder 112; when the first thread 136 is an external thread, the external thread is disposed on the outer wall of the pressure adjusting knob 133 away from the blocking plate 135, and correspondingly, the second thread 111 is an internal thread disposed on the inner wall of the guiding cylinder 112.

Optionally, in an implementation manner of the embodiment of the present invention, the abutting assembly includes an abutting rod 122 disposed on the base 110 and an abutting disc 123 connected to an end of the abutting rod 122 and perpendicular to the abutting rod 122, and the abutting surface 121 is located on a side of the abutting disc 123 away from the abutting rod 122.

The abutting assembly comprises an abutting rod 122 and an abutting disc 123, the abutting disc 123 is connected to the end of the abutting rod 122 and is arranged coaxially with the abutting rod 122, and an abutting surface 121 on the abutting disc 123 is arranged perpendicular to the abutting rod 122. By arranging the abutting disc 123, the contact area between the abutting assembly and the to-be-fixed member 200 is increased, so as to avoid damage to the to-be-fixed member 200.

Referring to fig. 1 and fig. 4, optionally, in an implementation manner of the embodiment of the present invention, a positioning block 124 is slidably disposed on an outer wall of the holding rod 122, a positioning groove 125 is disposed on a side of the positioning block 124 facing the holding tray 123, and a cross-sectional shape of the positioning groove 125 along a direction perpendicular to an axis of the holding rod 122 matches a shape of a stressed surface of the to-be-fixed member 200.

The positioning block 124 is slidably disposed on the abutting rod 122, a positioning groove 125 is disposed on the positioning block 124, and a notch of the positioning groove 125 is disposed toward the abutting disc 123. When the positioning block 124 slides to one end of the holding rod 122, the holding disc 123 is located in the positioning slot 125. The cross-sectional shape of the positioning slot 125 along the direction perpendicular to the axial line of the holding rod 122 matches with the shape of the stressed surface of the to-be-fixed member 200, so as to wrap the to-be-fixed member 200 and prevent the to-be-fixed member from falling off before the force-applying surface 137 of the pressure assembly 130 is held against the to-be-fixed member 200. After the holding surface 121 and the force applying surface 137 clamp the to-be-fixed member 200 together, the positioning block 124 is slid to a position away from the end of the holding rod 122 to expose the to-be-fixed member 200.

Optionally, in an implementation manner of the embodiment of the present invention, at least two supporting arms 113 are disposed on the base 110 at intervals, supporting holes are disposed on the supporting arms 113, the at least two supporting holes are coaxially disposed, first bearings 114 are disposed in the supporting holes, and the abutting rod 122 is disposed on inner rings of the at least two first bearings 114.

At least two support arms 113 are arranged on the base 110 in parallel, each support arm 113 is provided with a support hole, and the at least two support holes are coaxial and have the same diameter. The supporting hole is used for arranging the first bearing 114, the abutting rod 122 is arranged in the supporting hole through the first bearing 114, and the abutting rod 122 can drive the to-be-fixed member 200 to rotate by rotating.

Optionally, in an achievable manner of the embodiment of the present invention, the end of the push rod 131 is provided with a pressure disc 139, the pressure disc 139 is connected with the push rod 131 through a second bearing 140, and the force application surface 137 is located on a side of the pressure disc 139 away from the push rod 131.

The pressure disc 139 is fixed at the end of the push rod 131 through the second bearing 140, the side of the pressure disc 139 far away from the push rod 131 is a force application surface 137, and the pressure disc 139 can rotate together with the member to be fixed 200 but the push rod 131 only moves linearly.

The embodiment of the utility model also discloses a lens processing device which comprises the clamping mechanism 100. The lens processing apparatus includes the same structure and advantageous effects as the clamping mechanism 100 in the foregoing embodiment. The structure and advantages of the clamping mechanism 100 have been described in detail in the foregoing embodiments, and are not described in detail herein.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A clamping mechanism is characterized by comprising a base, an abutting component and a pressure component which are arranged on the base, the pressure assembly comprises a push rod, a spring and a pressure regulating knob, a through hole is arranged in the pressure regulating knob, one end of the pressure regulating knob is provided with a baffle plate to plug one end of the through hole, the other end of the through hole is provided with a first thread, the spring is arranged in the through hole, one end of the spring is abutted against the blocking piece, the other end of the spring is abutted against the push rod, a second thread matched with the first thread is arranged on the base to be screwed with the pressure regulating knob to compress the spring, the propping surface of the propping component is arranged opposite to the force application surface of the push rod, the to-be-fixed piece is clamped between the propping surface and the force application surface, the pressure regulating knob is screwed on the base to regulate the pressure exerted on the to-be-fixed member by the force applying surface.

2. The clamping mechanism as claimed in claim 1, wherein a third thread is provided on an end of an inner wall of the through hole away from the first thread, a fourth thread engaged with the third thread is provided on an outer periphery of the blocking piece, and the blocking piece is screwed into the through hole of the pressure regulating knob to compress the spring.

3. The clamping mechanism as claimed in claim 2, wherein a guide cylinder is arranged on the base, the guide cylinder is coaxial with the pressure regulating knob, the push rod is arranged in the guide cylinder in a penetrating manner and slides in the guide cylinder, and the second thread is arranged at the end part of the guide cylinder.

4. The clamping mechanism as claimed in claim 1, wherein the abutting assembly comprises an abutting rod disposed on the base and an abutting disc connected to an end of the abutting rod and perpendicular to the abutting rod, and the abutting surface is located on a side of the abutting disc away from the abutting rod.

5. The clamping mechanism as claimed in claim 4, wherein a positioning block is slidably disposed on the outer wall of the holding rod, a positioning groove is disposed on one side of the positioning block facing the holding disc, and the cross-sectional shape of the positioning groove along the direction perpendicular to the axis of the holding rod is matched with the shape of the stressed surface of the member to be fixed.

6. The clamping mechanism according to claim 3, wherein the first thread is an internal thread provided at one end of the through hole, and the second thread is an external thread provided on an outer wall of the guide cylinder, or the first thread is an external thread provided on an outer wall of the pressure adjusting knob, and the second thread is an internal thread provided on an inner wall of the guide cylinder.

7. The clamping mechanism according to claim 1, wherein the through hole includes a first receiving hole and a second receiving hole which are connected with each other and coaxial, the first thread is disposed on an inner wall of the first receiving hole, the spring is disposed in the second receiving hole, a limiting piece is disposed at an end of the push rod, the limiting piece is located in the second receiving hole and abuts against the spring, and a diameter of the limiting piece is larger than a diameter of the first receiving hole.

8. The clamping mechanism as claimed in claim 4, wherein at least two supporting arms are provided on the base at intervals, supporting holes are provided on the supporting arms, at least two supporting holes are coaxially provided, first bearings are provided in the supporting holes, and the abutting rod is provided on inner rings of at least two first bearings.

9. The clamping mechanism as claimed in claim 8, wherein a pressure disc is provided at the end of the push rod, the pressure disc is connected with the push rod through a second bearing, and the force application surface is located at the side of the pressure disc far away from the push rod.

10. A lens processing apparatus comprising a clamping mechanism as claimed in any one of claims 1 to 9.

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