Five-axis numerical control machining tool for lens cone parts

Abstract

The utility model relates to a tool for five-axis numerical control machining of lens cone parts, and belongs to the technical field of machining of optical parts. Wherein the first working step tool comprises a base, a positioning pin and a machine tool body; the base and the machine tool body are fixed through a positioning pin, the positioning pin enables the rotation center of the base and the rotation center of the machine tool body to coincide, and the base is fixed to the machine tool body. According to the utility model, the pin holes are used for positioning when parts are mounted in the step 1 of the five-axis machining procedure, so that the alignment time of the parts is shortened, and the repeated positioning precision can meet the requirement of immediately executing a machining procedure after mounting. The process threads on the part are used for fixing, the part is not directly clamped, stress deformation of the part is avoided, the percent of pass of the part is increased to 100% from original 90%, and it is guaranteed that the distance between every two different planes of three reference shafts is smaller than 0.02, and the intersection point distance is within 0.05. After machining in the step 1 is completed, the tray can be directly replaced without replacing all tools, so that the re-alignment and positioning work is reduced, the working efficiency is improved, and the working hours are saved by one hour.

Description

Technical Field

[0001] The utility model belongs to the technical field of optical parts processing, and in particular relates to a tool for five-axis numerical control processing of lens barrel parts. Background Art

[0002] The optical lens is a crucial component of the seeker, and the lens barrel is a crucial part of the optical lens. Its dimensional and geometric tolerances are stringent, making it challenging to machine. Currently, the five-axis machining process for this part consists of two steps. Step 1 uses conventional flat-nose pliers for clamping, requiring realignment when replacing the part, making repeatable positioning impossible and inefficient. Furthermore, the clamping force is affected by human factors, and excessive force can easily cause deformation, resulting in poor precision and dimensional and geometric tolerance violations. Step 2, using existing tooling for clamping, can only process one part at a time, resulting in low efficiency. To address these issues, a specialized tooling for the optical lens barrel part needs to be designed. Utility Model Content

[0003] (1) Technical issues to be resolved

[0004] The technical problem to be solved by the utility model is to provide a five-axis machining tool for lens barrel parts, solve the low machining efficiency of the existing tooling, and eliminate the problems of size and shape tolerance out-of-tolerance caused by human factors.

[0005] (2) Technical solution

[0006] In order to solve the above technical problems, the utility model provides a tool for five-axis CNC machining of lens barrel parts, including a first step tool and a second step tool;

[0007] The first step tooling includes a base 1, a first pallet 2, a lens barrel fixing seat 3, a first screw 4, a positioning pin 5, a machine tool bed 6, and a second screw 7; wherein the base 1 and the machine tool bed 6 are fixed by the positioning pin 5, the positioning pin 5 makes the rotation center of the base 1 and the machine tool bed 6 coincide, and the base 1 is fixed to the machine tool bed 6; the first pallet 2 is located on the base 1; the first screw 4 connects and fixes the lens barrel fixing seat 3 and the first pallet 2, and the lens barrel parts are fastened to the lens barrel fixing seat 3 by the second screw 7, and the first pallet 2 is matched with the axial hole of the lens barrel fixing seat 3;

[0008] The second-step tooling includes a base 1, a positioning pin 5, a machine tool bed 6, a second pallet 9, and a second bolt 13; wherein the base 1, the positioning pin 5, and the machine tool bed 6 are components shared with the first-step tooling; the second pallet 9 is fixed to the base 1 by the second bolt 13; the second pallet 9 has four bosses; the four barrel-like parts are respectively pressed against the positions of the four bosses on the second pallet 9, and the four barrel-like parts are respectively matched with the four bosses of the second pallet 9.

[0009] Preferably, the installed first tray 2 and lens barrel fixing seat 3 are fastened and positioned by first bolts and positioning pins.

[0010] Preferably, the straight sides of the four bosses of the second tray 9 are capable of limiting the axial rotational freedom.

[0011] Preferably, the four lens barrel parts are pressed against the four bosses on the second tray 9 by using nuts 10 , washers 11 and third bolts 12 .

[0012] Preferably, four first screws 4 are evenly distributed.

[0013] Preferably, four second screws 7 are evenly distributed.

[0014] Preferably, the lens barrel parts are optical lens barrel parts.

[0015] The utility model also provides an optical lens barrel part obtained by processing the tooling.

[0016] The utility model also provides an optical lens comprising the optical lens barrel part.

[0017] The utility model also provides a guide head comprising the optical lens.

[0018] (3) Beneficial effects

[0019] The advantage of the present invention is that pin holes are used for positioning when installing parts in step 1 of the five-axis machining process, which reduces the time for part alignment, and the repeatable positioning accuracy can meet the requirements of executing the machining program immediately after installation. The process threads on the parts are used for fixing, and the parts are not clamped directly, which avoids deformation of the parts due to stress. The part qualification rate is increased from the original 90% to 100%, ensuring that the distance between the three reference axes is less than 0.02 and the intersection distance is within 0.05. After the processing of step 1 is completed, there is no need to replace all the tooling, and the pallet can be replaced directly, which reduces the work of re-alignment and positioning, improves work efficiency, and saves 1 hour of work time. In step 2, 4 parts can be clamped at a time, and the processing time is reduced to a quarter of the original. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a top view of the first step tooling for implementing the five-axis machining process step 1 of the utility model;

[0021] Figure 2 for Figure 1 KK-direction partial cross-sectional view;

[0022] Figure 3 This is a top view of the second step tooling for implementing step 2 of the five-axis machining process of the present invention;

[0023] Figure 4 for Figure 3 LL partial cross-sectional view. DETAILED DESCRIPTION

[0024] In order to make the purpose, content and advantages of the present invention more clear, the specific implementation methods of the present invention are further described in detail below with reference to the accompanying drawings and embodiments.

[0025] refer to Figures 1 to 4 The utility model provides a five-axis machining tool for lens barrel parts, which includes a first step tool and a second step tool;

[0026] The first step tooling includes a base 1, a first pallet 2, a lens barrel fixing seat 3, a first screw 4, a positioning pin 5, a machine tool bed 6, and a second screw 7; wherein, the base 1 and the machine tool bed 6 are fixed by the positioning pin 5, and the positioning pin 5 makes the rotation center of the base 1 and the machine tool bed 6 coincide, and the base 1 is fixed to the machine tool bed 6; the first pallet 2 is located on the base 1; the first screw 4 connects and fixes the lens barrel fixing seat 3 and the first pallet 2, and the second screw 7 fastens the lens barrel parts to the lens barrel fixing seat 3, and the first pallet 2 cooperates with the axial hole of the lens barrel fixing seat 3; the installed first pallet 2 and the lens barrel fixing seat 3 are fastened and positioned by the first bolt and the positioning pin 8;

[0027] The second-step tooling includes a base 1, a locating pin 5, a machine bed 6, a second pallet 9, a nut 10, a gasket 11, a third bolt 12, and a second bolt 13; among which the base 1, the locating pin 5 and the machine bed 6 are components shared with the first-step tooling; the second pallet 9 is fixed to the base 1 by the second bolt 13; the second pallet 9 has four bosses; the four lens barrel-like parts are pressed against the positions of the four bosses on the second pallet 9 by means of the third bolt 12, the gasket 11 and the nut 10, and the four lens barrel-like parts are respectively matched with the four bosses of the second pallet 9, and the straight edges of the four bosses of the second pallet 9 can limit the axial rotational freedom.

[0028] The specific operation steps of using the first step fixture and the second step fixture to respectively realize step 1 and step 2 of the five-axis machining process are as follows:

[0029] First, the first step tooling consisting of the base 1, the first tray 2, the lens barrel fixing seat 3, the first screw 4, the positioning pin 5, the machine tool bed 6, the second screw 7 and other components is used to implement the processing content of step 1; the details are as follows:

[0030] Use the locating pin 5 to make the base 1 coincide with the rotation center of the machine tool bed 6, and use the pressure plate to fix the base 1 on the machine tool bed 6; use the first screw 4 to connect and fix the lens barrel fixing seat 3 and the first pallet 2, and use the second screw 7 to fasten the lens barrel parts to the lens barrel fixing seat 3. At the same time, the axial holes of the first pallet 2 and the lens barrel fixing seat 3 cooperate to play a positioning role; tighten and position the installed first pallet 2 and the lens barrel fixing seat 3 with the first bolt and the locating pin 8, and finally ensure that the coaxiality of the parts and the machine tool center is less than 0.02 before starting the processing content of step 1.

[0031] After the processing content of step 1 is completed, the first pallet 2 and the lens barrel fixing seat 3 are removed and the second pallet 9 is installed. The processing content of step 2 is realized using the second step tooling composed of the base 1, the positioning pin 5, the machine tool bed 6, the second pallet 9, the nut 10, the gasket 11, the third bolt 12, the second bolt 13 and other components, where the second pallet 9 has four bosses.

[0032] The clamping of step 2 is completed through the following steps: first, use the second bolt 13 to fix the second pallet 9; use the third bolt 12, gasket 11, and nut 10 to press the four barrel-like parts onto the second pallet 9; the second pallet 9 and the four barrel-like parts are matched with each other using various process bosses to ensure lateral positioning accuracy. The straight edges of the four bosses of the second pallet 9 can limit the axial rotational freedom.

[0033] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A tool for five-axis CNC machining of lens barrel parts, characterized in that: Including the first step tooling and the second step tooling; The first step tooling comprises a base (1), a first tray (2), a lens barrel fixing seat (3), a first screw (4), a positioning pin (5), a machine tool bed (6) and a second screw (7); wherein the base (1) and the machine tool bed (6) are fixed by the positioning pin (5); the positioning pin (5) makes the rotation centers of the base (1) and the machine tool bed (6) coincide with each other, and the base (1) is fixed on the machine tool bed (6); the first tray (2) is located on the base (1); the first screw (4) connects and fixes the lens barrel fixing seat (3) and the first tray (2); the lens barrel parts are fastened to the lens barrel fixing seat (3) by the second screw (7); the first tray (2) and the shaft hole of the lens barrel fixing seat (3) are matched; The second work step tooling comprises a base (1), a positioning pin (5), a machine tool bed (6), a second pallet (9), and a second bolt (13); wherein the base (1), the positioning pin (5), and the machine tool bed (6) are components shared with the first work step tooling; the second pallet (9) is fixed to the base (1) by the second bolt (13); the second pallet (9) has four bosses; four lens barrel parts are respectively pressed against the positions of the four bosses on the second pallet (9), and the four lens barrel parts are respectively matched with the four bosses of the second pallet (9).

2. The tooling according to claim 1, wherein: The installed first tray (2) and lens barrel fixing seat (3) are fastened and positioned by means of a first bolt and a positioning pin.

3. The tooling according to claim 1, wherein: The straight edges of the four bosses of the second tray (9) are capable of limiting the axial rotational freedom.

4. The tooling according to claim 1, wherein: The four lens barrel parts are pressed tightly onto the positions of the four bosses on the second tray (9) through nuts (10), washers (11) and third bolts (12).

5. The tooling according to claim 1, wherein: Four first screws (4) are evenly distributed.

6. The tooling according to claim 1, wherein: Four second screws (7) are evenly distributed.

7. The tooling according to claim 1, wherein: The lens barrel parts are optical lens barrel parts.

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