A precision machining clamping and positioning tool for metal products

Abstract

The present application relates to the technical field of clamping positioning, and particularly relates to a precision machining clamping positioning tool for metal products, which comprises a machining table, a telescopic column installed on the upper end of the machining table and a rotating positioning table fixedly installed on the upper end of the telescopic column, a mounting groove is formed in the middle of the rotating positioning table, and a plurality of positioning members are arranged in an annular array inside the mounting groove; the positioning member comprises an outer tube, an iron core column, a sealing block, an electrified spiral tube and a supporting spring, the outer tube is fixedly connected vertically inside the mounting groove, the supporting spring is fixedly installed at the bottom of the outer tube, the sealing block is fixedly connected to the upper end of the supporting spring, the iron core column is fixedly connected vertically to the sealing block, the sealing block is slidingly arranged at the upper end opening of the outer tube, and the electrified spiral tube is sleeved on the iron core column and fixedly connected at the bottom end to the sealing block. The present application can complete the rapid placement of metal products without the need for readjustment, thereby improving the applicability of the device.

Description

Technical Field

[0001] This invention relates to the field of clamping and positioning technology, and in particular to a clamping and positioning fixture for precision machining of metal products. Background Technology

[0002] In precision machining of metal products, clamping and positioning fixtures serve as a bridge connecting the workpiece and the machining equipment. Their core task is to ensure that the workpiece remains in a predetermined position during the machining process and resists external forces such as cutting forces and vibrations.

[0003] Patent CN218081549U discloses a positioning fixture for metal products, including a worktable, a rotating plate rotatably mounted on the worktable, a rotating component for driving the rotating plate to rotate mounted on the lower end of the worktable, a pair of positioning components for clamping plate-shaped metal products fixedly mounted at the upper edge of the rotating plate, and a plurality of lifting grooves distributed on the upper surface of the rotating plate, with lifting components for rolling support of the plate-shaped metal products fixedly mounted in the lifting grooves.

[0004] However, since different shapes of metal products require different clamping and positioning positions, the positioning base needs to be disassembled and replaced according to the shape of the metal product. This reduces the processing efficiency when processing different precision metal products. Summary of the Invention

[0005] The purpose of this invention is to solve the problem that the existing technology requires disassembling and replacing the positioning base according to the shape of the metal product, which reduces the processing efficiency when processing different precision metal products. Therefore, this invention proposes a clamping and positioning fixture for precision machining of metal products.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A clamping and positioning fixture for precision machining of metal products includes: a machining table, a telescopic column mounted on the upper end of the machining table, and a rotating positioning table fixedly mounted on the upper end of the telescopic column. The rotating positioning table has a mounting groove in the middle, and multiple positioning elements are arranged in a ring inside the mounting groove.

[0008] The positioning component includes an outer tube, an iron core column, a sealing block, an energized spiral tube, and a support spring. The outer tube is vertically fixed inside the mounting groove. The support spring is fixedly installed at the bottom of the outer tube. The sealing block is fixedly connected to the upper end of the support spring. The iron core column is vertically fixedly connected to the sealing block and is slidably disposed at the upper opening of the outer tube. The energized spiral tube is sleeved on the iron core column and its bottom end is fixedly connected to the sealing block.

[0009] The bottom end of the iron core column is provided with a sliding groove, and a positioning component is provided inside the sliding groove. The positioning component is used to fix the position of the iron core column when the energized spiral tube is energized.

[0010] Preferably, the rotating positioning table has symmetrical placement openings on both sides, and the processing table has multiple slide rails arranged in a ring around its side. The slide rails are vertically arranged and have clamping components.

[0011] Preferably, the clamping assembly includes a drive block, a rotating seat, a side frame, two telescopic rods, and a mounting slider. The drive block is disposed inside the slide rail, the rotating seat is fixedly mounted on the side of the drive block, the side frame is fixedly connected to the rotating end of the rotating seat, the side frame is provided with a sliding groove, the two telescopic rods are symmetrically fixedly mounted inside the sliding groove, and the mounting slider is fixedly connected to the end of the telescopic rod and slidably disposed inside the sliding groove.

[0012] Preferably, the mounting slider is provided with a mounting groove, which is used to install and place clamping parts of different specifications.

[0013] Preferably, the bottom of the rotating positioning platform is provided with an air guide cavity, the bottom of the outer tube is connected to the air guide cavity, and multiple sliding openings are provided on the side of the air guide cavity. Multiple limiting components are respectively provided inside the multiple sliding openings, and the limiting components are used to limit the position of the driving block inside the slide rail.

[0014] Preferably, the limiting component includes a limiting block, two tension plates and a limiting groove. The two tension plates are symmetrically arranged on the upper and lower sides of the limiting block, and the limiting sliding is arranged inside the sliding opening. The limiting groove is opened at the bottom of the driving block on the side away from the rotating seat.

[0015] Preferably, the positioning component includes a magnetic block, a sealing column, and multiple positioning elements. The magnetic block is fixedly connected to the bottom end of the sealing column, the sealing column is slidably disposed inside the sliding groove, and multiple positioning grooves are opened on the top side of the sliding groove, with multiple positioning elements disposed inside the positioning grooves.

[0016] Preferably, the positioning element includes a positioning block and an elastic sheet, wherein the elastic sheet is fixedly connected to the end of the positioning block and fixedly connected to the inside of the positioning groove.

[0017] Preferably, the positioning block is made of metal, the elastic sheet seals the opening at the inner end of the positioning groove, and the sliding groove is provided with extrusion gas for extruding the elastic sheet.

[0018] Preferably, an elastic cover is provided on the outside of the mounting groove, and the upper end of the elastic cover is shaped like an inverted frustum.

[0019] Compared with the prior art, the beneficial effects of the present invention are:

[0020] 1. By setting the processed surface of the metal product upward and contacting the bottom surface with the support component, the support spring inside the support component will be compressed and deformed to adapt to the shape of different metal products. During the processing, electricity is passed through the inside of the energized spiral tube, which causes the upper end of the iron core column to generate magnetism, thereby magnetically fixing the entire metal product and improving the fixing speed of the metal product.

[0021] 2. When the metal products to be processed are replaced, only the current inside the energized solenoid needs to be changed. While reducing the magnetism, the shape of the support is maintained while the metal products are being picked up, so that the metal products can be placed quickly without readjustment, thus improving the applicability of the device.

[0022] 3. Based on the material and shape of the metal product to be precision machined, the rotating positioning table is rotated to move the required placement openings on both sides to the position of the clamping parts to be used. The clamping parts inside the two symmetrically set mounting slots clamp and limit the metal product placed in the middle, realizing the quick replacement of the clamping parts without the need for manual disassembly.

[0023] 4. When the metal product is placed on multiple supports, due to gravity, the iron core column drives the sealing block to slide inside the outer tube, thereby forcing the gas at the bottom of the outer tube into the air guide cavity. The limiting block slides out from the sliding port and is locked into the limiting groove of the driving block, thus completing the limiting reinforcement of the driving block and preventing the driving block from sliding and shifting due to vibration, ensuring stable clamping of the metal product during processing. Attached Figure Description

[0024] Figure 1 This is a front structural schematic diagram of a clamping and positioning fixture for precision machining of metal products proposed in this invention.

[0025] Figure 2 This is a schematic diagram of the cross-sectional structure of a machining table for a precision machining clamping and positioning fixture for metal products, as proposed in this invention.

[0026] Figure 3 This is a schematic diagram of the unfolded structure of a clamping assembly for a precision machining fixture for metal products proposed in this invention.

[0027] Figure 4 This is a schematic diagram of a clamping assembly structure for a precision machining clamping and positioning fixture for metal products proposed in this invention.

[0028] Figure 5 This is a schematic diagram of a support structure for a precision machining clamping and positioning fixture for metal products proposed in this invention.

[0029] Figure 6This is a schematic diagram of the cross-sectional structure of a support component for a precision machining clamping and positioning fixture for metal products proposed in this invention.

[0030] Figure 7 This is a schematic diagram of a limiting component structure for a precision machining clamping and positioning fixture for metal products proposed in this invention.

[0031] Figure 8 This is a schematic diagram of a positioning component structure for a precision machining clamping and positioning fixture for metal products proposed in this invention.

[0032] In the diagram: 1. Processing table; 2. Rotary positioning table; 3. Support component; 31. Outer tube; 32. Iron core column; 33. Sealing block; 34. Electrified spiral tube; 35. Support spring; 4. Positioning assembly; 41. Magnetic block; 42. Sealing column; 43. Positioning component; 431. Positioning block; 432. Elastic sheet; 5. Slide rail; 6. Clamping assembly; 61. Drive block; 62. Rotating seat; 63. Side frame; 64. Telescopic rod; 65. Mounting slider; 7. Limiting assembly; 71. Limiting block; 72. Tensioning sheet; 73. Limiting groove; 8. Elastic cover. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0034] The terms used in this invention, such as "upper," "lower," "left," "right," "middle," and "one," are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0035] Reference Figures 1-8 A clamping and positioning fixture for precision machining of metal products includes: a machining table 1, a telescopic column installed on the upper end of the machining table 1, and a rotating positioning table 2 fixedly installed on the upper end of the telescopic column. The rotating positioning table 2 has an installation groove in the middle, and multiple support members 3 are arranged in a ring inside the installation groove.

[0036] The support component 3 includes an outer tube 31, an iron core column 32, a sealing block 33, an energized spiral tube 34, and a support spring 35. The outer tube 31 is vertically fixedly connected inside the mounting groove. The support spring 35 is fixedly installed at the bottom of the outer tube 31. The sealing block 33 is fixedly connected to the upper end of the support spring 35. The iron core column 32 is vertically fixedly connected to the sealing block 33 and is slidably disposed at the upper opening of the outer tube 31. The energized spiral tube 34 is sleeved on the iron core column 32 and its bottom end is fixedly connected to the sealing block 33.

[0037] The bottom end of the iron core column 32 is provided with a sliding groove, and the sliding groove is provided with a positioning component 4. The positioning component 4 is used to fix the position of the iron core column 32 when the energized spiral tube 34 is energized.

[0038] In the embodiments applying the above technical solution, since different metal products require different support surfaces, in order to quickly place metal products of different shapes, the processed surface of the metal product is set upwards, and the bottom surface contacts the support member 3. The support spring 35 inside the support member 3 will be compressed and deformed to adapt to the shape of different metal products. During the processing, the inside of the energized spiral tube 34 is energized, so that the upper end of the iron core column 32 generates magnetism, which magnetically fixes the entire metal product. At the same time, the positioning component 4 fixes the position of the iron core column 32. When the metal product to be processed is replaced, it is only necessary to change the current inside the energized spiral tube. While reducing the magnetism, the shape of the support member 3 is maintained when the metal product is picked up, thereby completing the rapid placement of the metal product without the need for readjustment.

[0039] The preferred technical solution in this embodiment is:

[0040] Reference Figure 1-4 The rotating positioning table 2 has symmetrical placement openings on both sides, and the processing table 1 has multiple slide rails 5 arranged in a ring on the side. The slide rails 5 are arranged vertically, and clamping components 6 are provided on the slide rails 5.

[0041] The clamping assembly 6 includes a drive block 61, a rotating seat 62, a side frame 63, two telescopic rods 64, and a mounting slider 65. The drive block 61 is disposed inside the slide rail 5. The rotating seat 62 is fixedly installed on the side of the drive block 61. The side frame 63 is fixedly connected to the rotating end of the rotating seat 62. The side frame 63 is provided with a sliding groove. The two telescopic rods 64 are symmetrically fixedly installed inside the sliding groove. The mounting slider 65 is fixedly connected to the end of the telescopic rod 64 and is slidably disposed inside the sliding groove.

[0042] The mounting slider 65 is provided with a mounting groove, which is used to install and place clamping parts of different specifications.

[0043] Because different shapes of clamping parts are required during the processing of metal products of different shapes, traditional tooling requires disassembling bolts when changing clamping parts, which is time-consuming and has low repeatability and positioning accuracy. Before processing, this application controls the rotation of the rotating positioning table 2 to move the required placement openings on both sides to the position of the clamping parts, based on the material and shape of the metal product to be precision machined. The drive block 61 is moved inside the slide rail 5. The drive block 61 is equipped with a drive gear, and the slide rail 5 is equipped with a track rack. The drive gear moves on the slide rail 5, transferring the drive block 61 to the slide rail 5 on the rotating processing table 1. At this time, the electric shaft inside the rotating seat 62 controls the rotating seat 62 to rotate, thereby changing the side frame 63 from a vertical state to a horizontal state, so that the side frame 63 is located inside the mounting slot. The clamping parts inside the two symmetrically arranged mounting slots clamp and limit the metal product placed in the middle, realizing the quick replacement of clamping parts without the need for manual disassembly.

[0044] Reference Figure 3 and Figure 7 The bottom of the rotating positioning platform 2 is provided with an air guide cavity, the bottom of the outer tube 31 is connected to the air guide cavity, and multiple sliding openings are provided on the side of the air guide cavity. Multiple limiting components 7 are respectively provided inside the multiple sliding openings. The limiting components 7 are used to limit the position of the driving block 61 inside the slide rail 5.

[0045] The limiting component 7 includes a limiting block 71, two tension pieces 72 and a limiting groove 73. The two tension pieces 72 are symmetrically arranged on the upper and lower sides of the limiting block 71 and are slidably positioned inside the sliding opening. The limiting groove 73 is opened at the bottom of the drive block 61 on the side away from the rotating seat 62.

[0046] After the clamping component completes the clamping of the metal product, during the grinding and cutting process of the metal product, the clamping component will be subjected to external forces, causing it to shake and be squeezed. This can easily cause the position of the drive block 61 inside the slide rail 5 to be offset, affecting the stable clamping of the side of the metal product.

[0047] When the metal product is placed on multiple support members 3, due to the effect of gravity, the iron core column 32 drives the sealing block 33 to slide inside the outer tube 31, thereby forcing the gas at the bottom of the outer tube 31 into the air guide cavity. Due to the increase in the volume of gas inside the air guide cavity, the gas compresses the limiting block 71, and the limiting block 71 slides out from the sliding port. The limiting block 71 is locked into the limiting groove 73 of the driving block 61, thereby completing the limiting reinforcement of the driving block 61 and avoiding the sliding displacement of the driving block 61 due to vibration, thus ensuring the stable clamping of the metal product during the processing.

[0048] Reference Figure 5-8The positioning component 4 includes a magnetic block 41, a sealing column 42 and a plurality of positioning elements 43. The magnetic block 41 is fixedly connected to the bottom end of the sealing column 42. The sealing column 42 is slidably disposed inside the sliding groove. A plurality of positioning grooves are opened on the top side of the sliding groove, and the plurality of positioning elements 43 are disposed inside the positioning groove.

[0049] The positioning element 43 includes a positioning block 431 and an elastic sheet 432. The elastic sheet 432 is fixedly connected to the end of the positioning block 431 and fixedly connected to the inside of the positioning groove.

[0050] The positioning block 431 is made of metal, the elastic sheet 432 seals the groove opening at the inner end of the positioning groove, and the sliding groove is provided with extrusion gas to extrude the elastic sheet 432.

[0051] Because the support member 3 deforms to fit the shape of the metal product, it will be subjected to compression and expansion during processing, thus affecting the processing accuracy of the metal product. Before energizing, the magnetic block 41 slides downwards due to gravity. The magnetic block 41 is fixed in the sliding groove by the sealing post 42 fixedly connected at the upper end. At this time, the magnetic block 41 is separated from the lower end of the iron core post 32. After processing begins, by energizing the solenoid 34, a magnetic field is generated at both ends of the iron core post 32. When the magnetic block 41 is attracted by the magnetic force of the iron core column 32, it moves toward the iron core column 32, thereby driving the sealing column 42 connected to the magnetic block 41 to move upward. When the sealing column 42 slides inside the sliding groove, it will compress the gas inside the sliding groove. When compressed, the elastic sheet 432 is pushed outward, thereby causing the positioning block 431 to move out of the positioning groove. The moved positioning block 431 will be locked on the upper and lower sides of the upper end of the outer tube 31, thereby fixing the position of the iron core column 32 and the outer tube 31, and completing the positioning of the iron core column 32.

[0052] Reference Figure 1 An elastic cover 8 is provided on the outside of the mounting groove, and the upper end of the elastic cover 8 is shaped like an inverted frustum.

[0053] The elastic cover 8 is used to confine large metal products and, during the finishing process of grinding or cutting, to block the generated debris and prevent it from splashing.

[0054] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A clamping and positioning fixture for precision machining of metal products, comprising: A processing table, a telescopic column installed on the upper part of the processing table, and a rotating positioning table fixedly installed on the upper part of the telescopic column, characterized in that the rotating positioning table has an installation groove in the middle, and multiple support members are arranged in a ring inside the installation groove; The support component includes an outer tube, an iron core column, a sealing block, an energized spiral tube, and a support spring. The outer tube is vertically fixed inside the mounting groove. The support spring is fixedly installed at the bottom of the outer tube. The sealing block is fixedly connected to the upper end of the support spring. The iron core column is vertically fixed to the sealing block and is slidably disposed at the upper opening of the outer tube. The energized spiral tube is sleeved on the iron core column and its bottom end is fixedly connected to the sealing block. The bottom end of the iron core column is provided with a sliding groove, and a positioning component is provided inside the sliding groove. The positioning component is used to fix the position of the iron core column when the energized spiral tube is energized. The positioning component includes a magnetic block, a sealing column, and multiple positioning elements. The magnetic block is fixedly connected to the bottom end of the sealing column. The sealing column is slidably disposed inside the sliding groove. Multiple positioning grooves are opened on the top side of the sliding groove, and multiple positioning elements are disposed inside the positioning grooves. The positioning element includes a positioning block and an elastic sheet, wherein the elastic sheet is fixedly connected to the end of the positioning block and fixedly connected to the inside of the positioning groove.

2. The clamping and positioning fixture for precision machining of metal products according to claim 1, characterized in that, The rotating positioning table has symmetrical placement openings on both sides, and the processing table has multiple slide rails arranged in a ring around its side. The slide rails are vertically arranged and have clamping components.

3. The clamping and positioning fixture for precision machining of metal products according to claim 2, characterized in that, The clamping assembly includes a drive block, a rotating seat, a side frame, two telescopic rods, and a mounting slider. The drive block is disposed inside the slide rail. The rotating seat is fixedly mounted on the side of the drive block. The side frame is fixedly connected to the rotating end of the rotating seat. The side frame has a sliding groove inside. The two telescopic rods are symmetrically fixedly mounted inside the sliding groove. The mounting slider is fixedly connected to the end of the telescopic rod and is slidably disposed inside the sliding groove.

4. The clamping and positioning fixture for precision machining of metal products according to claim 3, characterized in that, The mounting slider is provided with a mounting groove, which is used to install and place clamping parts of different specifications.

5. A clamping and positioning fixture for precision machining of metal products according to claim 3, characterized in that, The bottom of the rotating positioning platform is provided with an air guide cavity, the bottom of the outer tube is connected to the air guide cavity, and multiple sliding openings are provided on the side of the air guide cavity. Multiple limiting components are respectively provided inside the multiple sliding openings. The limiting components are used to limit the position of the drive block inside the slide rail.

6. A clamping and positioning fixture for precision machining of metal products according to claim 5, characterized in that, The limiting component includes a limiting block, two tension plates, and a limiting groove. The two tension plates are symmetrically arranged on the upper and lower sides of the limiting block, and the limiting sliding is arranged inside the sliding opening. The limiting groove is opened at the bottom of the driving block on the side away from the rotating seat.

7. A clamping and positioning fixture for precision machining of metal products according to claim 6, characterized in that, The positioning block is made of metal, the elastic sheet seals the opening at the inner end of the positioning groove, and the sliding groove is equipped with extrusion gas to extrude the elastic sheet.

8. A clamping and positioning fixture for precision machining of metal products according to claim 1, characterized in that, An elastic cover is provided on the outside of the mounting groove, and the upper end of the elastic cover is shaped like an inverted frustum.

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