Lens pad repairing device and repairing method

Abstract

The lens pad repairing device comprises a telescopic tool rest and a profiling assembly, the telescopic tool rest comprises a shell, a telescopic shaft is arranged in the shell, a lathe tool rest is arranged at one end of the telescopic shaft, the other end of the telescopic shaft is tightly attached to the profiling assembly, and the contact face of the profiling assembly and the telescopic shaft is an arc face; the invention further discloses a lens pad repairing method for repairing the lens pad in industries such as petrochemical engineering, and the problem that an existing repaired lens pad cannot be used due to insufficient precision is solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of lens gasket repair and relates to a lens gasket repair device.

[0002] The present invention also relates to a lens gasket repair method. Background Art

[0003] In recent years, lens gaskets used in production devices of refining and chemical enterprises have been frequently damaged. When using conventional tools to repair the sealing surface of old lens gaskets, after multiple repairs and uses, it is found that the repair effect is not ideal. Through analysis and discussion by technical personnel, it is found that the arc shape required for the sealing surface of the lens gasket cannot be achieved by directly manually machining the small tool rest on a lathe; the arc radius of the lens gasket sealing surface is generally between φ100 and φ300, and the outer dimensions have strict requirements. The machining accuracy on existing lathes is insufficient, but the workload of manufacturing or repairing lens gaskets is relatively large. Therefore, a special lens gasket sealing surface repair tool is needed to solve the problem of insufficient repair accuracy of the manual small tool rest. Summary of the Invention

[0004] The purpose of the present invention is to provide a lens gasket repair device, which solves the problem of insufficient machining accuracy on existing lathes during the repair process of existing lens gaskets.

[0005] Another purpose of the present invention is to provide a lens gasket repair method.

[0006] The first technical solution adopted by the present invention is a lens gasket repair device, including a telescopic tool rest and a profiling component. The telescopic tool rest includes a housing, a telescopic shaft is arranged inside the housing, one end of the telescopic shaft is provided with a lathe tool rest, the other end of the telescopic shaft is in close contact with the profiling component, and the contact surface between the profiling component and the telescopic shaft is an arc surface.

[0007] The characteristics of the first technical solution of the present invention also lie in:

[0008] One end of the telescopic shaft close to the profiling component is connected to a shaft head through a coaxially arranged connecting rod, a spring is sleeved outside the connecting rod, a spring retaining piece is arranged at the end of the housing, one end of the spring is connected to the spring retaining piece, and the other end of the spring is fixedly connected to the shaft head;

[0009] The diameter of the connecting rod is smaller than the diameter of the telescopic shaft;

[0010] One end of the housing close to the connecting rod is axially provided with a concave groove along the telescopic shaft, the spring retaining piece is laid at the bottom of the concave groove, and the connecting rod extends out of the spring retaining piece and has a clearance fit with the spring retaining piece;

[0011] A spring fixing nut is sleeved between the connecting rod and the shaft head, and the spring is fixedly connected to the spring fixing nut;

[0012] A pin is provided outside the outer shell. The telescopic shaft is axially provided with a keyway for mating with the pin. The pin vertically extends into the outer shell to connect with the telescopic shaft and passes through the keyway on the telescopic shaft.

[0013] The shaft head is in close contact with the profiling component. The connection between the shaft head and the profiling component is a angular structure formed by two inclined cutting surfaces, and the top of the angle is in close contact with the profiling component.

[0014] The profiling component includes a Morse taper pin. The Morse taper pin is connected to the profiling template through a profiling clamping plate. One end of the profiling template away from the profiling clamping plate is connected to the shaft head, and the surface where the profiling template is connected to the shaft head is an arc surface.

[0015] The radian of the arc surface of the profiling template is the same as the radian of the lens gasket to be repaired.

[0016] The second technical solution adopted by the present invention is a method for repairing a lens gasket. A lens gasket repair device is used, and the specific method is as follows: Install the profiling component on the tailstock of the lathe. The profiling template has a curved surface with the same shape as the curved surface of the lens gasket to be repaired. The shaft head of the telescopic tool rest moves along the curved surface of the profiling template in a curved motion. The spring expands and contracts according to the trajectory of the shaft head. A turning tool is installed on the lathe tool rest of the telescopic tool rest, and the turning tool also shows a curved running trajectory, so as to perform curved machining on the lens gasket.

[0017] The beneficial effects of the present invention are:

[0018] For the lens gasket repair device of the present invention, under the action of the spring, the shaft head of the telescopic shaft acts on the sealing surface of the lens gasket through the turning tool along the radius of the radian of the profiling template, meeting the processing requirements. Moreover, the processing accuracy is the same as that of the lathe. After using this tool, the repair level of the lens gasket is improved, and a large amount of outsourcing maintenance costs and on-site maintenance time are saved. The device of the present invention is applicable to the repair of lens gaskets in the machining industry and is worthy of popularization. Similarly, since this tool rest processes workpieces according to the radian of the tailstock profiling template, as long as profiling templates with different shapes are made, different shapes can be machined with an ordinary lathe, not just the lens gasket as a single part, greatly extending the processing capacity of the ordinary lathe. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of the telescopic tool rest in the lens gasket repair device of the present invention;

[0020] Figure 2 It is a schematic structural diagram of the profiling component in the lens gasket repair device of the present invention;

[0021] Figure 3 It is a schematic structural diagram during the actual application process of the lens gasket repair device of the present invention;

[0022] Figure 4 It is a schematic structural diagram of the telescopic shaft in the lens gasket repair device of the present invention.

[0023] In the figure, 1. outer shell, 2. telescopic shaft, 3. lathe tool rest, 4. connecting rod, 5. shaft head, 6. spring, 7. spring retaining plate, 8. concave groove, 9. pin, 10. spring fixing nut, 11. Morse taper pin, 12. profiling clamp plate, 13. profiling template, 14. lens pad, 15. turning tool, 16. profiling fixing pin, 17. clamp plate fixing bolt. Specific implementation mode

[0024] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0025] By visiting each workshop to measure the lens pads in use, the arc radian of the lens pads was determined, and the damage of some removed old lens pads was analyzed. It was found that most gaskets could be repaired and reused. Therefore, the general working principle of the "special tool rest for repairing and machining the sealing surface of lens pads" was elaborated. It was determined to first make a prototype machine to achieve the purpose of repairing the damaged sealing surface of the lens pads. Specifically, the lens pad repair device provided by the present invention mainly consists of two parts: a telescopic tool rest fixed on the tool rest and a sealing surface radian profiling component fixed on the tailstock of the lathe. The lathe using this tool rest is a CA-6140 ordinary lathe.

[0026] Specifically, as shown in the following embodiments:

[0027] Embodiment 1, the specific structure of the telescopic tool rest of the lens pad repair device of the present invention is as Figure 1 shown:

[0028] The telescopic tool rest fixed on the tool rest is designed and made according to the sizes of the 20 lathe tool rest and the turning tool. The made framework can be firmly fixed on the lathe tool rest, and the telescopic shaft moves freely. The tail of the made telescopic shaft is processed into the form of the 20 lathe tool rest 3 to install the turning tool 15. The tool rest housing is processed into a stepped shape and can be fixed on the lathe tool rest 3, with a clearance fit with the telescopic shaft 2, and it needs to slide freely when lubricated with oil. The pin 9 is fixed on the outer housing 1, and the head extends into the axial keyway of the telescopic shaft 2 to prevent the telescopic shaft 2 from rotating. The spring retaining plate 7, the spring 6, and the spring fixing nut 10 form the resilience for the axial movement of the telescopic shaft, ensuring that the shaft head 5 is always in close contact with the profiling template 13. The specific structure is as follows:

[0029] The retractable tool rest includes a housing 1, inside which a retractable shaft 2 is embedded. One end of the retractable shaft 2 is provided with a lathe tool rest 3, and the other end of the retractable shaft 2 is in close contact with a profiling component. The contact surface between the profiling component and the retractable shaft 2 is an arc surface. One end of the retractable shaft 2 close to the profiling component is connected to a shaft head 5 through a coaxially arranged connecting rod 4. The diameter of the connecting rod 4 is smaller than that of the retractable shaft 2. A spring 6 is sleeved outside the connecting rod 4. One end of the housing 1 close to the connecting rod 4 is provided with a concave groove 8 along the axial direction of the retractable shaft 2. The bottom of the concave groove 8 just plays a limiting role on the retractable shaft 2. A spring retainer 7 is laid at the bottom of the concave groove 8. The connecting rod 4 extends out of the spring retainer 7 and has a clearance fit with the spring retainer 7. One end of the spring 6 is connected to the spring retainer 7, and a spring fixing nut 10 is sleeved between the connecting rod 4 and the shaft head 5. The other end of the spring 6 is fixedly connected to the spring fixing nut 10;

[0030] A pin 9 vertically extends into the housing 1 and is connected to the retractable shaft 2. A keyway for cooperating with the pin 9 is provided along the axial direction on the shaft surface of the retractable shaft 2. The keyway can ensure the rotation of the retractable shaft 2 in the housing 1 and also play an axial guiding role on the retractable shaft 2 during the retraction and extension process; As Figure 4 shown, the shaft head 5 is in close contact with the profiling component. The contact part between the shaft head 5 and the profiling component is an angular structure formed by two inclined planes, and the top of the angle is in close contact with the profiling component.

[0031] Embodiment 2, the specific structure of the profiling component of the lens pad repair device of the present invention is as Figure 2 shown:

[0032] A sealing surface radian profiling template 13 fixed on the lathe tailstock, the fabricated component is firmly combined with the tailstock, and the arc radius of the profiling template 13 is the same as the actual radius of the lens pad 14;

[0033] The profiling template 13 is made of the inner radian of the profiling template 13 according to the radian of the lens pad 14 given by the workshop. The profiling template 13 is fixed in the middle of the profiling template clamping plate 12 and connected by a clamping plate fixing bolt 17. The profiling template fixing pin 16 is to prevent the profiling template 13 from loosening from the profiling template clamping plate 12; The profiling template clamping plate 12 is welded to the 5# Morse taper pin 11, pay attention to the welding direction, and it can be quickly installed and disassembled in the tailstock; The profiling template 13 can be made in several models according to the radian of the lens pad 14 for replacement.

[0034] Embodiment 3, the specific process of the lens pad repair method of the present invention is as follows:

[0035] As Figure 3As shown, during the operation of repairing the lens gasket using a lathe, since the traditional turning tool moves in a straight-line trajectory, while the sealing surface of the lens gasket 14 is curved, when using this innovative achievement, the profiling component is installed on the tailstock of the lathe. The profiling template 13 has a curved surface with the same shape as the curved surface of the lens gasket 14 to be repaired. The retractable tool rest can move in a curve along the curved surface of the profiling template 13. The turning tool 15 is installed at the left end of the retractable tool rest, and the turning tool 15 also shows a curved running trajectory, thereby performing curve machining on the lens gasket 14. This innovative achievement can change the shape of the profiling template and use the retractable tool rest to turn machining surfaces of different shapes.

Claims

1. Lens pad repair device, Characterized in that, It includes a retractable tool holder and a template component. The retractable tool holder includes a housing (1). A telescopic shaft (2) is arranged inside the housing (1). One end of the telescopic shaft (2) is provided with a lathe tool holder (3). The other end of the telescopic shaft (2) is in close contact with the template component. The contact surface between the template component and the telescopic shaft (2) is an arc surface.

2. The lens pad repair device according to claim 1, Characterized in that, One end of the telescopic shaft (2) close to the template component is connected to a shaft head (5) through a coaxially arranged connecting rod (4). A spring (6) is sleeved outside the connecting rod (4). A spring retaining piece (7) is arranged at the end of the housing (1). One end of the spring (6) is connected to the spring retaining piece (7), and the other end of the spring (6) is fixedly connected to the shaft head (5).

3. The lens pad repair device according to claim 2, Characterized in that, The diameter of the connecting rod (4) is smaller than the diameter of the telescopic shaft (2).

4. The lens pad repair device according to claim 2, Characterized in that, One end of the housing (1) close to the connecting rod (4) is axially provided with a concave groove (8) along the telescopic shaft (2). The spring retaining piece (7) is laid at the bottom of the concave groove (8). The connecting rod (4) extends out of the spring retaining piece (7) and has a clearance fit with the spring retaining piece (7).

5. The lens pad repair device according to claim 2, Characterized in that, A spring fixing nut (10) is sleeved between the connecting rod (4) and the shaft head (5). The spring (6) is fixedly connected to the spring fixing nut (10).

6. The lens pad repair device according to claim 2, Characterized in that, A pin (9) is arranged outside the housing (1). The pin (9) vertically extends into the housing (1) and is connected to the telescopic shaft (2). The telescopic shaft (2) is axially provided with a keyway for cooperating with the pin (9).

7. The lens pad repair device according to claim 2, Characterized in that, The shaft head (5) is in close contact with the template component. The joint between the shaft head (5) and the template component is an angular structure formed by two inclined planes. The pointed end of the angular structure is in close contact with the template component.

8. The lens pad repair device according to claim 7, Characterized in that, The template component includes a Morse taper pin (11). The Morse taper pin (11) is connected to a template (13) through a template clamping plate (12). One end of the template (13) away from the template clamping plate (12) is connected to the shaft head (5). The surface of the template (13) in contact with the shaft head (5) is an arc surface.

9. The lens pad repair device according to claim 8, Characterized in that, The arc radian of the template (13) is the same as the radian of the lens pad to be repaired.

10. Lens pad repair method, using the lens pad repair device according to any one of claims 1 to 9, Characterized in that, The specific method is as follows: Install the template component on the lathe tailstock. The template (13) has a curved surface with the same shape as the curved surface to be repaired of the lens pad (14). The shaft head (5) of the retractable tool rest makes a curvilinear motion along the curved surface of the template (13). The spring (6) expands and contracts according to the trajectory of the shaft head (5). A turning tool (15) is installed on the lathe tool rest (3) of the retractable tool rest. The turning tool (15) also shows a curvilinear running trajectory, so as to perform curvilinear machining on the lens pad (14).

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