A fixing fixture for deep internal machining of pipe fittings

Abstract

This application relates to the field of machining fixtures, and more particularly to a fixed fixture for deep internal machining of pipe fittings. The fixture includes a fixing component and a clamping component. The fixing component includes a worktable and a support frame fixed to the worktable. The clamping component is fixed to the support frame and includes multiple clamping rings detachably connected along the length of the pipe fitting. Each clamping ring is used to clamp the pipe fitting to be machined, and a clamping space corresponding to the size of the pipe fitting is formed within each clamping ring. This application achieves the effect of limiting the pipe fitting during internal machining by using multiple clamping rings, preventing overcutting by the milling cutter due to vibration, thus affecting production quality. Furthermore, the modular design achieved by using detachable clamping rings facilitates quick installation or replacement.

Description

Technical Field

[0001] This application relates to the field of machining fixtures, and in particular to a fixed fixture for deep internal machining of pipe fittings. Background Technology

[0002] In modern machinery manufacturing, to achieve lightweighting and structural integration, many complex tubular parts, such as the integrated tubular components of the lower tube and motor mount of electric bicycle frames, are pre-installed with reinforcing ribs or support structures to ensure initial strength and molding accuracy. However, depending on the requirements of subsequent processing techniques, such as tube expansion, tube shrinking, bending, or hydraulic forming, these internal reinforcing ribs must be precisely removed.

[0003] In existing technologies for removing internal ribs from deep-hole pipes, the cutting tool requires a long overhang to reach the machining area due to the deep machining depth. During cutting, both the long tool and the hollow pipe itself are prone to severe vibration due to the cutting force. This vibration seriously disrupts machining stability, directly causing the actual cutting trajectory of the milling cutter to deviate from the preset path, resulting in "overcutting." This makes the pipe wall in the cut area too thin, creating a significant safety hazard. Utility Model Content

[0004] The purpose of this application is to overcome the above-mentioned technical problems and provide a fixing fixture for deep internal machining of pipe fittings.

[0005] A fixing fixture for deep internal machining of pipe fittings, comprising: The fixing mechanism includes a worktable and a support frame fixed to the worktable, and A clamping mechanism is fixed to the support frame. The clamping mechanism includes multiple clamping rings that are detachably connected along the length of the pipe. Each clamping ring is used to clamp the pipe to be processed. A clamping space is formed inside the clamping ring, and the size of the clamping space corresponds to the pipe to be processed.

[0006] By adopting the above scheme, multiple clamping rings clamp the pipe fittings simultaneously. During the processing of the pipe fittings, the multiple clamping rings limit the pipe fittings to prevent vibrations from occurring inside the pipe fittings during processing, which could cause the milling cutter to overcut and thus affect the production quality. By setting multiple detachable clamping rings, a modular design can be achieved, allowing the clamping rings to be installed or replaced quickly.

[0007] In one embodiment, the support frame includes a base plate and a side plate vertically disposed at one end of the base plate. The side plate is provided with a plurality of positioning holes arranged in an array along the length direction of the pipe. Each clamping ring includes at least one positioning pin that mates with the positioning hole.

[0008] By adopting the above scheme, the positioning pin and different positioning holes cooperate to achieve the initial positioning of the clamping ring. The clamping ring can be positioned at different positions on the side plate, thereby realizing the adjustable spacing between different clamping rings.

[0009] In one embodiment, the bottom plate has a first limiting block on the side facing the side plate, and the side plate has a first limiting groove that cooperates with the first limiting block.

[0010] By adopting the above scheme, the first limiting block and the first limiting groove cooperate to limit the side plate in the vertical direction and prevent the side plate from displacing in the vertical direction.

[0011] In one embodiment, the fixing mechanism further includes a plurality of first fixing members arranged along the length direction of the pipe fitting, and a second fixing member arranged along the length direction of the first limiting groove. The first fixing members pass through the side plate and are fixed to the clamping ring, and the second fixing members pass through the bottom surface of the first limiting groove and are fixed to the first limiting block.

[0012] By adopting the above solution, the first fixing component is used to fix the clamping ring to the side plate, and the second fixing component is used to fix the bottom plate to the side plate.

[0013] In one embodiment, the support frame further includes two parallel reinforcing plates, and the side plate is also provided with a second limiting groove that cooperates with the bottom plate. The second limiting groove is perpendicular to the first limiting groove and is connected to the first limiting groove.

[0014] By adopting the above scheme, the reinforcing plate is used to strengthen the bottom plate and the side plate to prevent tilting between the bottom plate and the side plate, and the second limiting groove is used to limit the reinforcing bottom plate to prevent it from shifting.

[0015] In one embodiment, the upper surface of the base plate is provided with a third limiting groove that mates with the bottom surface of the reinforcing plate. When the first limiting block is embedded in the first limiting groove, the third limiting groove is connected to the second limiting groove. The fixing mechanism also includes a plurality of third fixing members. A portion of the third fixing members pass through the second limiting groove and are fixed to the reinforcing plate, while another portion of the third fixing members pass through the third limiting groove and are fixed to the reinforcing plate.

[0016] By adopting the above scheme, the third limiting groove further limits the reinforcing plate. At the same time, after the reinforcing plate cooperates with the third and second limiting grooves, the side wall of the reinforcing plate can generate static friction at the connection between the third and second limiting grooves, thereby further enhancing the stability of the connection between the bottom plate and the side plate.

[0017] In one embodiment, the clamping ring includes a clamping seat and a pressure block. One side of the clamping seat is fixed to the side plate, and the other side is provided with a second limiting block. The pressure block is provided with a fourth limiting groove that cooperates with the second limiting block.

[0018] By adopting the above scheme, the second limiting block cooperates with the fourth limiting groove to prevent the clamping seat and the pressure block from being displaced relative to each other in the direction perpendicular to the pipe fitting.

[0019] In one embodiment, the clamping ring further includes a fourth fixing member, the pressure block is provided with a mounting groove, the fourth fixing member passes through the mounting groove along the length direction of the mounting groove and is fixed to the clamping seat.

[0020] By adopting the above scheme, the installation groove makes it easier to align the fourth fastener during installation, thus improving the assembly efficiency of the clamping ring.

[0021] In one embodiment, the fixing mechanism further includes a directional adjustment assembly located between the workbench and the support frame. The directional adjustment assembly includes an adjustment plate. One end of the adjustment plate is provided with a rotating shaft for rotatably connecting with the base plate. Both ends of the rotating shaft protrude from the base plate, and a tightening member is sleeved on the outer peripheral surface of the protruding part. The support frame further includes a first screw. The base plate is provided with a first threaded hole that mates with the first screw. The extended end of the first screw abuts against the adjustment plate. A second screw is provided inside the workbench that abuts against the side of the pipe.

[0022] By adopting the above scheme, when the adjusting plate rotates around the base plate, the vertical orientation of the pipe can be adjusted, thereby adjusting the pipe to a state that is easy to process. The setting of the tightening part can initially fix the adjusting plate at the preset working angle. The first screw abuts against the adjusting plate, and the second screw abuts against the side of the pipe, further limiting the bearing frame.

[0023] In one embodiment, the steering assembly further includes a fastener and a turntable fixed to the worktable. The turntable is rotatably connected to the adjusting plate on the side opposite to the worktable. The sidewall of the turntable is provided with a plurality of stop grooves that cooperate with the fastener. An adjusting block is fixed on the surface of the worktable. The adjusting block is provided with a second threaded hole. The fastener extends along the direction of the turntable and is provided with an external thread that cooperates with the second threaded hole.

[0024] By adopting the above solution, rotating the turntable can adjust the horizontal orientation of the pipe fitting, and tightening the fasteners can keep the turntable in the set position.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. Multiple clamping rings clamp the pipe fittings simultaneously. During the processing of the pipe fittings, the multiple clamping rings limit the pipe fittings to prevent vibrations from occurring inside the pipe fittings during processing, which could cause the milling cutter to overcut and thus affect the production quality. By setting multiple detachable clamping rings, a modular design can be achieved, allowing the clamping rings to be quickly installed or replaced.

[0026] 2. The reinforcing plate is used to reinforce the base plate and side plate to prevent tilting between them. The second limiting groove is used to limit the reinforcing base plate to prevent it from shifting. The third limiting groove further limits the reinforcing plate. At the same time, after the reinforcing plate cooperates with the third and second limiting grooves, the side wall of the reinforcing plate can generate static friction at the connection between the third and second limiting grooves, thereby further enhancing the stability of the connection between the base plate and the side plate.

[0027] 3. When the adjusting plate rotates around the base plate, the vertical orientation of the pipe fitting can be adjusted, thereby adjusting the pipe fitting to a state that is easy to process. The setting of the tightening part can initially fix the adjusting plate at the preset working angle. The first screw abuts against the adjusting plate, and the second screw abuts against the side of the pipe fitting, further limiting the support frame. Rotating the turntable can adjust the horizontal orientation of the pipe fitting. Tightening the fastener can stop the turntable from rotating, thereby allowing the processing direction of the pipe fitting to be adjusted. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a fixing fixture for deep internal processing of pipe fittings provided in the first embodiment of this application.

[0029] Figure 2 This is an exploded view of a fixing fixture for deep internal machining of pipe fittings provided in the first embodiment of this application.

[0030] Figure 3 This is a schematic diagram of the clamping mechanism.

[0031] Figure 4 This is a schematic diagram of a fixing fixture for deep internal processing of pipe fittings provided in the second embodiment of this application.

[0032] Figure 5 yes Figure 4 An enlarged view of region A.

[0033] Figure 6 This is a cross-sectional view of the fixing clamp when the pipe fitting is tilted according to the second embodiment of this application.

[0034] Explanation of reference numerals in the attached drawings: 1. Fixing mechanism; 11. Worktable; 111. Second screw; 112. Adjusting block; 1121. Second threaded hole; 12. Bearing frame; 121. Base plate; 1211. First limiting block; 1212. Third limiting groove; 1213. First threaded hole; 122. Side plate; 1221. First limiting groove; 1222. Second limiting groove; 1223. Positioning hole; 123. Reinforcing plate; 124. First screw; 13. First fixing component; 14. 15. Second fixing component; 16. Third fixing component; 17. Orientation assembly; 18. Adjustment plate; 19.11. Rotating shaft; 10.12. Tightening component; 16.2. Turntable; 19.21. Stop groove; 10.3. Fastener; 2. Clamping mechanism; 21. Clamping ring; 211. Positioning pin; 212. Clamping seat; 2121. Second limiting block; 213. Pressure block; 2131. Mounting groove; 2132. Fourth limiting groove; 214. Fourth fixing component; 215. Clamping space; 3. Pipe fitting. Detailed Implementation

[0035] This application provides a fixing clamp for deep internal machining of pipe fittings that can stably clamp pipes and facilitate installation.

[0036] Example 1 Please see Figure 1-2 , Figure 1 This is a schematic diagram of a fixing fixture for deep internal processing of pipe fittings provided in the first embodiment of this application. The fixing fixture for deep internal processing of pipe fittings provided in this embodiment includes a fixing mechanism 1 and a clamping mechanism 2. The fixing mechanism 1 is detachably connected to the worktable 11 by bolts. The clamping mechanism 2 is mounted on the support frame 12 of the fixing mechanism 1. Multiple clamping rings 21 are detachably connected along the length of the pipe fitting 3. The multiple clamping rings 21 clamp the pipe fitting 3 to prevent vibration during processing. The multiple clamping rings 21 are detachable and modular, which facilitates quick installation or replacement.

[0037] The fixing mechanism 1 includes a worktable 11 and a support frame 12. The worktable 11 is the basic support component of the entire fixture, usually made of a sturdy metal material, such as cast iron or steel, to give it good stability and load-bearing capacity. The support frame 12 includes a base plate 121, a side plate 122 perpendicularly arranged at one end of the base plate 121, and two parallel reinforcing plates 123. The base plate 121 is generally a rectangular flat plate structure, made of high-strength steel plate to ensure that it can withstand the various forces of the pipe fitting 3 and the processing. The side plate 122 is perpendicular to the base plate 121 and is also made of high-strength steel plate. It has multiple positioning holes 1223 arranged in an array along the length of the pipe fitting 3. The positioning holes 1223 are circular through holes for cooperating with the positioning pins 211 on the clamping ring 21.

[0038] In this application, the fixing mechanism 1 further includes multiple first fixing members 13, second fixing members 14, and third fixing members 15. The first fixing member 13 is arranged along the length of the pipe 3, passes through the side plate 122, and is fixed to the clamping ring 21. The first fixing member 13 can be a bolt, which securely fixes the clamping ring 21 to the side plate 122. The second fixing member 14 is arranged along the length of the first limiting groove 1221, passes through the bottom surface of the first limiting groove 1221, and is fixed to the first limiting block 1211. The second fixing member 14 can also be a bolt, achieving a stable connection between the base plate 121 and the side plate 122. A portion of the third fixing member 15 passes through the second limiting groove 1222 and is fixed to the reinforcing plate 123, while another portion passes through the third limiting groove 1212 and is fixed to the reinforcing plate 123. The third fixing member 15 can also be a bolt, used to strengthen the connection between the reinforcing plate 123 and the base plate 121 and the side plate 122.

[0039] The base plate 121 has a first limiting block 1211 on its side facing the side plate 122. The first limiting block 1211 is cuboid in shape and made of metal. The side plate 122 has a first limiting groove 1221 that mates with the first limiting block 1211. The first limiting groove 1221 is a rectangular groove. The first limiting block 1211 and the first limiting groove 1221 work together to limit the side plate 122 in the vertical direction, preventing the side plate 122 from shifting vertically. The upper surface of the base plate 121 has a third limiting groove 1212 that mates with the bottom surface of the reinforcing plate 123. The third limiting groove 1212 is a rectangular groove. When the first limiting block 1211 is embedded in the first limiting groove 1221, the third limiting groove 1212 connects with the second limiting groove 1222.

[0040] The reinforcing plate 123 is a metal plate used to reinforce the base plate 121 and the side plate 122, preventing tilting between them. The side plate 122 is also provided with a second limiting groove 1222 that cooperates with the reinforcing plate 123. The second limiting groove 1222 is perpendicular to the first limiting groove 1221 and communicates with it. The second limiting groove 1222 is used to limit the reinforcing plate 123 and prevent it from shifting.

[0041] Please refer to the following: Figure 3 , Figure 3This is a schematic diagram of the clamping mechanism. The clamping mechanism 2 is fixed to the support frame 12 and includes multiple clamping rings 21 detachably connected along the length of the pipe fitting 3. Each clamping ring 21 forms a clamping space 215, the size of which corresponds to the pipe fitting 3 to be processed. The clamping ring 21 includes a clamping seat 212, a pressure block 213, a positioning pin 211, a second limiting block 2121, a fourth limiting groove 2132, and a fourth fixing member 214. One side of the clamping seat 212 is fixed to the side plate 122, and the other side is provided with the second limiting block 2121, which is cuboid in shape and made of metal. The pressure block 213 is provided with a fourth limiting groove 2132 that cooperates with the second limiting block 2121. The fourth limiting groove 2132 is a rectangular groove. The second limiting block 2121 cooperates with the fourth limiting groove 2132 to prevent relative displacement between the clamping seat 212 and the pressure block 213 in the direction perpendicular to the pipe fitting 3.

[0042] The positioning pin 211 engages with the positioning hole 1223 to achieve initial positioning of the clamping ring 21, enabling the clamping ring 21 to be positioned at different positions on the side plate 122, thereby achieving adjustable spacing between different clamping rings 21. Each clamping ring 21 includes at least one positioning pin 211 that engages with the positioning hole 1223. The positioning pin 211 is a cylindrical metal pin. The pressure block 213 is provided with a mounting groove 2131, which is a rectangular groove. The fourth fixing member 214 passes through the mounting groove 2131 along its length and is fixed to the clamping seat 212. The fourth fixing member 214 can be a bolt. The mounting groove 2131 makes it easier to align the fourth fixing member 214 during installation, improving the assembly efficiency of the clamping ring 21.

[0043] The working principle of this embodiment is as follows: Multiple clamping rings 21 are initially positioned by engaging with positioning holes 1223 on the side plate 122 using positioning pins 211. The spacing between different clamping rings 21 is adjusted, and then the clamping rings 21 are fixed to the side plate 122 using the first fixing member 13. The pipe 3 is placed into the clamping space 215 of the clamping rings 21, and the pipe 3 is clamped by the cooperation of the pressure block 213 and the clamping seat 212. The pressure block 213 and the clamping seat 212 are fixed by the fourth fixing member 214. During the processing, multiple clamping rings 21 simultaneously limit the movement of the pipe 3, preventing the pipe 3 from vibrating due to cutting force, avoiding overcutting by the milling cutter, and improving the stability of processing and product quality. At the same time, the multiple detachable clamping rings 21 realize a modular design, which facilitates quick installation or replacement. The setting of the reinforcing plate 123, the limiting block and the limiting groove enhances the structural stability of the entire fixture.

[0044] Example 2 Please see Figure 4-6 , Figure 4This is a schematic diagram of a fixing fixture for deep internal processing of pipe fittings provided in the second embodiment of this application. The structure of this embodiment is basically the same as that of the above embodiment, except that: the support frame 12 further includes a first screw 124, and the fixing mechanism 1 further includes an adjusting assembly 16 located between the worktable 11 and the support frame 12. The adjusting assembly 16 includes an adjusting plate 161, a tightening member 1612, a fastener 163, and a turntable 162. The adjusting plate 161 is a rectangular metal plate, one end of which is provided with a rotating shaft 1611 for rotatably connecting with the base plate 121. The rotating shaft 1611 is usually a solid metal shaft, with both ends protruding from the base plate 121, and the tightening member 1612 is sleeved on the outer circumference of the protruding part. The parts of the rotating shaft 1611 that protrude from the base plate 121 are provided with external threads. The tightening member 1612 is a nut that mates with the external thread. By tightening the nut, the adjusting plate 161 can be initially fixed at a preset working angle. The base plate 121 is provided with a first threaded hole 1213 that mates with the first screw 124. The extended end of the first screw 124 abuts against the adjusting plate 161. The first screw 124 can be an ordinary threaded rod. By rotating the first screw 124, the degree of contact between it and the adjusting plate 161 can be adjusted, thereby limiting the position of the support frame 12.

[0045] The workbench 11 is equipped with a second screw 111 that abuts against the side of the pipe fitting 3. The second screw 111 also serves as a limit. The turntable 162 is fixed to the workbench 11 and is rotatably connected to the adjusting plate 161 on the side away from the workbench 11. The side wall of the turntable 162 is provided with an array of stop grooves 1621 that cooperate with fasteners 163. The stop grooves 1621 are semi-circular grooves. The fasteners 163 can be bolts. An adjusting block 112 is fixed to the surface of the workbench 11. The adjusting block 112 is provided with a second threaded hole 1121. The fasteners 163 are provided with external threads that cooperate with the second threaded hole 1121. The fasteners 163 are bolts or screws and extend along the direction of the turntable 162. By tightening the fasteners 163, the turntable 162 can be stopped from rotating.

[0046] The working principle of this embodiment is as follows: When the adjusting plate 161 rotates around the base plate 121, the vertical orientation of the pipe fitting 3 can be adjusted, thereby adjusting the pipe fitting 3 to a state that is convenient for processing. The setting of the tightening member 1612 can initially fix the adjusting plate 161 at a preset working angle. The first screw 124 abuts against the adjusting plate 161, and the second screw 111 abuts against the side of the pipe fitting 3, further limiting the position of the support frame 12. Rotating the turntable 162 can adjust the horizontal orientation of the pipe fitting 3. Tightening the fastener 163 can stop the turntable 162 from rotating, so that the processing direction of the pipe fitting 3 can be adjusted, further improving the practicality and flexibility of the fixture and better meeting different processing needs.

[0047] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A fixing fixture for deep internal machining of pipe fittings, characterized in that, include: The fixing mechanism (1) includes a worktable (11) and a support frame (12) fixed to the worktable (11), and A clamping mechanism (2) is fixed to the support frame (12). The clamping mechanism (2) includes a plurality of clamping rings (21) that are detachably connected along the length of the pipe (3). Each clamping ring (21) is used to clamp the pipe (3) to be processed. A clamping space (215) is formed in the clamping ring (21). The size of the clamping space (215) corresponds to the pipe (3) to be processed.

2. The fixing fixture for deep internal machining of pipe fittings according to claim 1, characterized in that: The support frame (12) includes a base plate (121) and a side plate (122) vertically disposed at one end of the base plate (121). The side plate (122) is provided with a plurality of positioning holes (1223) arranged in an array along the length direction of the pipe (3). Each clamping ring (21) includes at least one positioning pin (211) that cooperates with the positioning hole (1223).

3. A fixing fixture for deep internal machining of pipe fittings according to claim 2, characterized in that: The bottom plate (121) has a first limiting block (1211) on the side facing the side plate (122), and the side plate (122) has a first limiting groove (1221) that cooperates with the first limiting block (1211).

4. A fixing fixture for deep internal machining of pipe fittings according to claim 3, characterized in that: The fixing mechanism (1) further includes a plurality of first fixing members (13) arranged along the length direction of the pipe (3) and a second fixing member (14) arranged along the length direction of the first limiting groove (1221). The first fixing member (13) passes through the side plate (122) and is fixed to the clamping ring (21). The second fixing member (14) passes through the bottom surface of the first limiting groove (1221) and is fixed to the first limiting block (1211).

5. A fixing fixture for deep internal machining of pipe fittings according to claim 3, characterized in that: The support frame (12) also includes two parallel reinforcing plates (123), and the side plate (122) is also provided with a second limiting groove (1222) that cooperates with the bottom plate (121). The second limiting groove (1222) is perpendicular to the first limiting groove (1221), and the second limiting groove (1222) is connected to the first limiting groove (1221).

6. A fixing fixture for deep internal machining of pipe fittings according to claim 5, characterized in that: The upper surface of the base plate (121) is provided with a third limiting groove (1212) that mates with the bottom surface of the reinforcing plate (123). When the first limiting block (1211) is embedded in the first limiting groove (1221), the third limiting groove (1212) is connected to the second limiting groove (1222). The fixing mechanism (1) also includes a plurality of third fixing members (15). A portion of the third fixing members (15) passes through the second limiting groove (1222) and is fixed to the reinforcing plate (123), while another portion of the third fixing members (15) passes through the third limiting groove (1212) and is fixed to the reinforcing plate (123).

7. A fixing fixture for deep internal machining of pipe fittings according to claim 2, characterized in that: The clamping ring (21) includes a clamping seat (212) and a pressure block (213). One side of the clamping seat (212) is fixed to the side plate (122), and the other side is provided with a second limiting block (2121). The pressure block (213) is provided with a fourth limiting groove (2132) that cooperates with the second limiting block (2121).

8. A fixing fixture for deep internal machining of pipe fittings according to claim 7, characterized in that: The clamping ring (21) further includes a fourth fixing member (214). The pressure block (213) is provided with a mounting groove (2131). The fourth fixing member (214) passes through the mounting groove (2131) along the length direction of the mounting groove (2131) and is fixed to the clamping seat (212).

9. A fixing fixture for deep internal machining of pipe fittings according to claim 2, characterized in that: The fixing mechanism (1) further includes a directional adjustment assembly (16) located between the workbench (11) and the support frame (12). The directional adjustment assembly (16) includes an adjustment plate (161). One end of the adjustment plate (161) is provided with a rotating shaft (1611) for rotatably connecting with the base plate (121). Both ends of the rotating shaft (1611) protrude from the base plate (121), and a tightening member (1612) is sleeved on the outer peripheral surface of the protruding part. The support frame (12) further includes a first screw (124). The base plate (121) is provided with a first threaded hole (1213) that mates with the first screw (124). The extended end of the first screw (124) abuts against the adjustment plate (161). The workbench (11) is provided with a second screw (111) that abuts against the side of the pipe (3).

10. A fixing fixture for deep internal machining of pipe fittings according to claim 9, characterized in that: The directional assembly (16) further includes a fastener (163) and a turntable (162) fixed to the worktable (11). The turntable (162) is rotatably connected to the adjusting plate (161) on the side away from the worktable (11). The side wall of the turntable (162) is provided with a plurality of stop grooves (1621) that cooperate with the fastener (163). An adjusting block (112) is fixed on the surface of the worktable (11). The adjusting block (112) is provided with a second threaded hole (1121). The fastener (163) extends along the direction of the turntable (162) and is provided with an external thread that cooperates with the second threaded hole (1121).

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