A tool fitting deep lens barrel assembly

Abstract

The utility model discloses a kind of tooling that fit deep lens barrel assembly, belong to lens assembly technical field, solve the problem that current deep lens barrel assembly lacks special tool, lead to the problem of big assembly difficulty;The tooling includes force transmission cylinder, and the bottom of force transmission cylinder is detachably connected with pressure groove knife edge poking piece;After force transmission cylinder is inserted into lens barrel interior, pressure groove knife edge poking piece is embedded in the recess of pressure ring inside lens barrel interior.The utility model, after force transmission cylinder drives pressure groove knife edge poking piece to be inserted into lens barrel, rotate force transmission cylinder, make pressure groove knife edge poking piece be embedded in the recess of pressure ring, rotate force transmission cylinder at this time, pressure groove knife edge poking piece drives pressure ring to rotate, to realize assembly;Operation depth is extended using force transmission cylinder, can satisfy the requirement of deep lens lens assembly, assembly is convenient;Meanwhile, the bottom of force transmission cylinder is in contact with pressure ring during assembly process, forms the location to pressure ring, avoid pressure ring to produce radial deflection, ensure that circumferential torque is evenly distributed during tightening process, will not appear the phenomenon that lens edge collapse is caused due to local stress concentration.

Description

Technical Field

[0001] This utility model relates to the field of lens assembly technology, and in particular to a tooling for fitting deep lens barrel assembly. Background Technology

[0002] In the field of optical lens assembly, the installation accuracy of the pressure ring inside the lens barrel has a critical impact on the optical performance of the lens. However, there are two major technical pain points in the traditional installation process that urgently need to be addressed.

[0003] In existing technologies, when installing the internal retaining ring of a deep lens barrel, tweezers are used to drive the retaining ring to rotate inside the deep lens barrel for assembly. From a tool compatibility perspective, the long tweezers used have inherent defects in torque transmission mechanisms. Due to the long lever arm formed by the deep structure of the lens barrel, the flexible gripping method of long tweezers is difficult to effectively transmit the operating torque to the threaded pair of the retaining ring, resulting in insufficient thread preload. The retaining ring is prone to loosening under long-term vibration. At the same time, the lack of elastic buffer between the metal contact parts of the tweezers and the inner wall of the lens barrel or the lens coating, during fine-tuning operations in a confined space, is due to blind spots and operational precision limitations, which can easily generate rigid friction, causing scratches on the inner wall of the lens barrel or damage to the lens coating, thus affecting the imaging quality of the optical system. In terms of force uniformity control, the traditional operation mode of directly using a threaded wrench has significant drawbacks. The single-point force application characteristics of the threaded wrench are incompatible with the annular thread structure of the retaining ring, making it difficult to ensure uniform distribution of circumferential torque during tightening, resulting in radial deviation of the retaining ring. This misalignment causes uneven axial pressure on the lens, which can range from minor optical axis shift affecting image quality to severe stress concentration leading to edge chipping and irreversible assembly defects. Particularly in high-precision optical systems, this accumulated error can have a systemic impact on overall performance, becoming a technical bottleneck restricting product reliability. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a tooling suitable for deep lens barrel assembly, solving the problem of high assembly difficulty caused by the lack of specialized tools in existing deep lens barrel assembly.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A tooling for assembling deep microscope tubes includes a force transmission cylinder, the bottom of which is detachably connected to a grooved cutting edge; after the force transmission cylinder extends into the inside of the microscope tube, the grooved cutting edge is embedded in the groove of the pressure ring inside the microscope tube.

[0007] In this design, after the force transmission cylinder drives the grooved blade to extend into the lens barrel, the force transmission cylinder is rotated so that the grooved blade is embedded in the groove of the pressure ring. At this time, rotating the force transmission cylinder causes the grooved blade to drive the pressure ring to rotate, thereby achieving assembly. The use of a force transmission cylinder to extend the working depth can meet the requirements of deep lens assembly and adjustment, and the assembly is convenient. At the same time, during the assembly process, the bottom of the force transmission cylinder abuts against the pressure ring, which limits the pressure ring and prevents radial deviation of the pressure ring. This ensures the uniform distribution of circumferential torque during tightening and prevents lens edge chipping caused by local stress concentration.

[0008] Furthermore, the bottom of the force transmission cylinder is provided with a toothed groove, and one end of the pressure groove blade is stuck in the toothed groove.

[0009] In this design, the grooved blade can be directly pressed into the toothed groove at the bottom of the force transmission cylinder, which makes it easy to select a force transmission cylinder of appropriate diameter and install the grooved blade.

[0010] Furthermore, the end of the pressure groove blade away from the force transmission cylinder is a wedge-shaped tooth, and the thickness at the tip of the wedge-shaped tooth is designed to be tapered.

[0011] In this design, the wedge-shaped teeth allow the pressure-grooving blade to be easily embedded into the tooth groove at the bottom of the power transmission cylinder during rotation.

[0012] Furthermore, the bottom of the force transmission cylinder is provided with several toothed grooves, which are evenly distributed along the circumference; two pressure groove knife blades are provided, and the two pressure groove knife blades are fixed in two toothed grooves at both ends of the radial direction of the force transmission cylinder.

[0013] Furthermore, a force-applying handle is provided at the end of the force-transmitting cylinder away from the pressure groove blade.

[0014] In this solution, the force transmission cylinder is rotated by applying force to increase torque and improve the thread preload of the pressure ring assembly.

[0015] Furthermore, one end of the force application handle is tapped with an external thread; two threaded holes are respectively opened on both sides of the force transmission cylinder along the radial direction, and the two force application handles are respectively threaded into the two threaded holes.

[0016] Furthermore, the force transmission cylinder is made of polytetrafluoroethylene.

[0017] In this solution, polytetrafluoroethylene (PTFE) material can prevent distortion of assembly accuracy caused by thermal deformation.

[0018] Furthermore, the material of the grooved blade is 45# steel.

[0019] The beneficial effects of this utility model are:

[0020] The tooling provided by this utility model for assembling deep lens barrels utilizes a force transmission cylinder to drive a grooving knife-edge paddle into the lens barrel. The grooving knife-edge paddle is embedded in the groove of the pressure ring. While rotating the force transmission cylinder, the grooving knife-edge paddle drives the pressure ring to rotate, thereby achieving assembly. The assembly is convenient and efficient.

[0021] During assembly, the bottom of the force transmission cylinder abuts against the pressure ring, limiting the pressure ring and preventing radial deviation. This ensures a uniform distribution of circumferential torque during tightening and prevents lens edge chipping caused by localized stress concentration. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a tooling for fitting deep lens barrel assembly that extends into the lens barrel according to this utility model;

[0023] Figure 2 To be Figure 1 Schematic diagram of the internal structure of the middle tube;

[0024] Figure 3 This is a schematic diagram of the structure of the bottom of the force transmission cylinder, the pressure groove blade, and the pressure ring in this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of the pressure groove blade of this utility model;

[0026] Figure 5 This is an exploded view of a tooling for assembling a deep lens barrel according to the present invention.

[0027] Figure label:

[0028] 1. Force transmission cylinder; 11. Tooth groove; 2. Grooving blade; 21. Wedge tooth; 3. Lens tube; 4. Pressure ring; 41. Groove; 5. Force application handle; Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. The specific embodiments of the present invention are described below to facilitate understanding by those skilled in the art. However, it should be understood that the present invention is not limited to the scope of the specific embodiments. For those skilled in the art, various changes are obvious as long as they fall within the spirit and scope of the present invention as defined and determined by the appended claims. All inventions utilizing the concept of the present invention are protected.

[0030] Example 1

[0031] like Figure 1 and Figure 2 As shown, this embodiment provides a tooling for assembling deep-lens telescopes, solving the problem of high assembly difficulty caused by the lack of dedicated tools in existing deep-lens telescope assembly; specifically, it includes:

[0032] 1. Force transmission cylinder, 2. Grooving knife edge paddle, and 5. Force application handle;

[0033] The force transmission cylinder 1 has a detachable grooved blade 2 connected to its bottom. After the force transmission cylinder 1 is inserted into the lens barrel 3, the grooved blade 2 is embedded in the groove 41 of the pressure ring 4 inside the lens barrel 3. A force application handle 5 is provided on the top of the force transmission cylinder 1. When installing the pressure ring 4, after the force transmission cylinder 1 is inserted into the lens barrel 3, the force transmission cylinder 1 is rotated by the force application handle 5, and the grooved blade 2 drives the pressure ring 4 to rotate, thereby realizing the assembly.

[0034] like Figure 3 As shown, the bottom of the force transmission cylinder 1 is provided with a toothed groove 11, and one end of the grooved blade 2 is stuck in the toothed groove 11. With this design, when installing the grooved blade 2, it can be directly pressed into the toothed groove 11 at the bottom of the force transmission cylinder 1, which makes it convenient to select a force transmission cylinder 1 of appropriate diameter and install the grooved blade 2.

[0035] like Figure 4 As shown, the end of the grooved blade 2 away from the force transmission cylinder 1 is a wedge-shaped tooth 21, and the thickness of the tip of the wedge-shaped tooth 21 is tapered. The design of the wedge-shaped tooth 21 allows the grooved blade 2 to be easily embedded into the tooth groove 11 at the bottom of the force transmission cylinder 1 during the rotation of the force transmission cylinder 1.

[0036] The bottom of the force transmission cylinder 1 has several toothed grooves 11, which are evenly distributed along the circumference. Two pressing blades 2 are provided, each fixed in one of the two toothed grooves 11 at either end of the radial direction of the force transmission cylinder 1. Figure 5 As shown.

[0037] One end of the force-applying handle 5 is tapped with an external thread; the force transmission cylinder 1 has two threaded holes on both sides along the radial direction, and the two force-applying handles 5 are respectively threaded into the two threaded holes.

[0038] As a preferred embodiment, the force transmission cylinder 1 is made of polytetrafluoroethylene (PTFE), which can prevent the distortion of assembly and adjustment accuracy caused by thermal deformation.

[0039] As a preferred embodiment, the material of the grooved blade 2 is 45 steel.

[0040] Example 2

[0041] This embodiment, based on a tooling for assembling deep lens barrels according to Embodiment 1, provides a method for assembling a φ58mm×300mm lens barrel 3. The specific implementation steps are as follows:

[0042] Step 1: Select a power transmission cylinder 1 with a suitable diameter, insert the grooved blade 2 into the toothed groove 11 at the bottom of the power transmission cylinder 1, and check its stability.

[0043] Step 2: Use the force transmission cylinder 1 to test mount the grooved knife edge 2 and the lens retaining ring 4 outside the lens barrel 3 to check their fit.

[0044] Step 3: Connect the force application handle 5 to the force transmission cylinder 1 and check whether the force transmission is good; during the test, continuously rotate the handle and check the parallelism of the pressure ring 4 every 90° rotation.

[0045] Step 4: Slowly insert the force transmission cylinder 1 along the lens cylinder 3 until it reaches the groove depth of the pressure ring 4, and check whether the wedge-shaped teeth 21 at the bottom of the pressure groove knife edge 2 are aligned with the groove 41 on the pressure ring 4.

[0046] Step 5: Apply the corresponding torque to the force application handle 5 according to the process specifications, transmit the torque through the force transmission cylinder 1, and tighten the pressure ring 4.

[0047] Step 6: Slowly remove the force transmission cylinder 1 and check whether there are any remaining objects inside the lens tube 3. Continue to assemble and adjust other components.

[0048] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of this invention, and should be understood that the scope of protection of this invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on these technical teachings disclosed in this invention without departing from the essence of this invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A tooling for assembling deep microscope tubes, characterized in that: Includes a force transmission cylinder (1), the bottom of which is detachably connected to a grooved blade (2); after the force transmission cylinder (1) extends into the lens barrel (3), the grooved blade (2) is embedded in the groove (41) of the pressure ring (4) inside the lens barrel (3).

2. The tooling for fitting deep-lens assembly according to claim 1, characterized in that: The bottom of the force transmission cylinder (1) is provided with a toothed groove (11), and one end of the pressure groove knife blade (2) is stuck in the toothed groove (11).

3. The tooling for fitting deep-lens assembly according to claim 2, characterized in that: The end of the grooved blade (2) away from the force transmission cylinder (1) is a wedge-shaped tooth (21), and the thickness of the tip of the wedge-shaped tooth (21) is tapered.

4. The tooling for fitting deep-lens assembly according to claim 2, characterized in that: The bottom of the force transmission cylinder (1) is provided with a number of toothed grooves (11), and the number of toothed grooves (11) are evenly distributed along the circumferential direction. The grooved blade (2) is provided in two pieces, and the two grooved blades (2) are respectively fixed in two toothed grooves (11) at both ends of the force transmission cylinder (1) radially.

5. The tooling for fitting deep-lens assembly according to claim 1, characterized in that: The force transmission cylinder (1) is provided with a force application handle (5) at the end away from the pressure groove knife edge (2).

6. The tooling for fitting deep-lens assembly according to claim 5, characterized in that: One end of the force-applying handle (5) is tapped with an external thread; the force-transmitting cylinder (1) has two threaded holes on both sides along the radial direction, and the two force-applying handles (5) are respectively threaded into the two threaded holes.

7. The tooling for fitting deep-lens assembly according to any one of claims 1 to 6, characterized in that: The force transmission cylinder (1) is made of polytetrafluoroethylene.

8. The tooling for fitting deep-lens assembly according to any one of claims 1 to 6, characterized in that: The grooved blade (2) is made of No. 45 steel.

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