A synchronous chamfering device for both ends of an oil tank support column

Abstract

The application discloses an oil tank upper support column two-end synchronous chamfer processing device, and relates to the technical field of chamfer processing. The application can change the height of the support column between the first fixed wedge and the second fixed wedge by making the first fixed wedge and the second fixed wedge approach or move away from each other, and the chamfer cutter can perform right-angle chamfering on support columns with different diameters, and can also perform right-angle chamfering on the end face edge of the support column or the end face axis of the support column.

Description

Technical Field

[0001] This invention relates to the field of chamfering technology, specifically to a device for synchronously chamfering both ends of a support column on an oil tank. Background Technology

[0002] Simultaneous chamfering at both ends of shafts commonly employs turning, specialized double-head chamfering, milling, grinding, and automated chamfering technologies. Specialized fully automatic double-head chamfering machines are the primary equipment for chamfering both ends of shafts. They utilize a double-tool holder opposing structure, automatic feeding, clamping, and simultaneous cutting at both ends. They can produce C-corners and rounded corners, and are suitable for mass production of round shafts, pins, and tubes. They offer high efficiency and strong dimensional consistency. Additionally, robots equipped with double-chamfering spindles, working in conjunction with conveyor lines, enable unmanned simultaneous chamfering at both ends of long and heavy shafts, adapting to multi-variety, large-scale production lines.

[0003] According to the Chinese Patent Publication No. CN223903033U, entitled "An Anchor Outer Circle Chamfering Processing Device", an anchor outer circle chamfering processing device is disclosed, which includes a telescopic platform 1, and outer circle chamfering processing devices 2 are respectively arranged on the upper and lower sides of the telescopic platform 1... The synchronous drive device 4 can synchronously drive the synchronous clamps 3 on the left and right sides to move towards each other or move away from each other synchronously. It can be seen that the chamfering processing device only processes the outer circle surface of the material.

[0004] The simultaneous chamfering of both ends of the support column on the oil tank has certain drawbacks. Generally, the chamfering of the support column's end face is done around the edge. However, due to variations in the diameter caused by different support column models, it's difficult to ensure the end face of the support column corresponds correctly to the tool position. There's a lack of components to adjust the support column. Furthermore, some support columns require not only chamfering around the end face edge but also chamfering along the end face axis to create countersunk holes. The simultaneous chamfering device cannot simultaneously meet the needs of processing both the edge and the end face axis of the support column. Summary of the Invention

[0005] The purpose of this invention is to provide a device for simultaneously chamfering both ends of a support column on an oil tank, so as to solve the problems mentioned in the background art.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] A device for synchronously chamfering both ends of a support column on an oil tank includes a worktable, a fixed base, and a movable base. The fixed base and the movable base are respectively installed on opposite sides of the surface of the worktable. A drive mechanism, a replaceable metal chuck, and a chamfering tool are installed above both the fixed base and the movable base. The drive mechanism drives the metal chuck to rotate, and the chamfering tool is installed at the end of the metal chuck. A height adjustment assembly for supporting the column is installed between the fixed base and the movable base. The height adjustment assembly includes two fixing bars, which are respectively installed on the opposite edges of the fixed base and the movable base. A first fixing wedge and a second fixing wedge are slidably installed on the surfaces of the two fixing bars. The first fixing wedge and the second fixing wedge are positioned relatively close to or relatively far apart by the drive assembly. The support column is located on the inclined surfaces of the first fixing wedge and the second fixing wedge. The two chamfering tools and the support column are always coplanar. The relative position of the first fixing wedge and the second fixing wedge is used to adjust the height of the support column, thereby chamfering the end edge or the end axis of the support column at a right angle.

[0008] In a preferred embodiment of the present invention, the inclined surfaces of the first and second fixed wedges are arranged in a V-shape. The driving assembly includes a first motor, and a spur gear is mounted on the end of the first motor. Reserved slots are provided inside both the first and second fixed wedges. The spur gear is located inside the reserved slots of the first and second fixed wedges in the same group. A first tooth is provided at the bottom of the reserved slot of the first fixed wedge, and a second tooth is provided at the top of the reserved slot of the second fixed wedge. Both the first and second teeth mesh with the spur gear. The movement directions of the first and second fixed wedges are opposite.

[0009] As a preferred embodiment of the present invention, the surface of the fixing strip is provided with two sets of T-slots, which are parallel to each other. The bottom end of the first fixing wedge and the bottom end of the second fixing wedge are both integrally provided with T-blocks. The cross-section of the T-slots and the cross-section of the T-blocks are adapted to each other. The T-blocks of the first fixing wedge and the T-blocks of the second fixing wedge are slidably connected to the two sets of T-slots respectively.

[0010] As a preferred embodiment of the present invention, a first fixing frame is installed on both the surface of the fixed base and the surface of the movable base. A cylinder is installed at the lower edge of the first fixing frame, and a fixing block is installed at the bottom of the cylinder. A second drive motor is installed on one side wall of the fixing block, and a friction wheel is installed at the end of the second drive motor. The friction wheel is located on the other side wall of the fixing block and is used to drive the side wall of the support column. The first fixing wedge, the second fixing wedge, and the friction wheel are used to define the position of the cylindrical support column.

[0011] In a preferred embodiment of the present invention, the chamfering tool is a conical grinding wheel, the edge of which is in contact with the edge of the support column, and the conical grinding wheel is used to chamfer the edges of both ends of the support column; or the chamfering tool is a countersink or a center drill, the axis of which is aligned with the axis of the support column, and the countersink or center drill is used to chamfer the axial position of both ends of the support column.

[0012] As a preferred embodiment of the present invention, an auxiliary rotation assembly for smooth rotation of the support column is provided between the first fixed wedge, the second fixed wedge, and the fixed block. The auxiliary rotation assembly includes several embedded blocks, which are located on the inclined surfaces of the first and second fixed wedges. A row of balls is embedded inside each first fixed groove. The balls of the first and second fixed wedges and the friction wheel are all in contact with the cylindrical surface of the support column. The balls are used to ensure smooth rotation of the support column.

[0013] As a preferred embodiment of the present invention, the inclined surfaces of the first and second fixed wedges are both provided with first fixing grooves, the embedded block is located inside the first fixing groove, the embedded block is provided with a rolling groove, the ball is located inside the rolling groove, and a plug is installed at the end of the embedded block to prevent the ball from falling out of the rolling groove.

[0014] As a preferred embodiment of the present invention, a second fixing frame and a fixing pin are installed on the side wall of the fixing block on both sides of the friction wheel axis. The fixing pin is located inside the fixing block and is rotatably connected to the second fixing frame. A pressure wheel is installed at the bottom of each second fixing frame. The pressure wheels are symmetrical about the friction wheel axis. The two pressure wheels in the same group are close to or far from each other, and the two pressure wheels in the same group are in contact with the support column. Each pressure wheel is used to prevent the support column from separating from the friction wheel.

[0015] As a preferred embodiment of the present invention, a second fixing groove is provided on the side wall of the fixing block and at the second fixing frame. The second fixing frame is located inside the second fixing groove. A telescopic spring is connected to the inner wall of the second fixing groove and the top side wall of the second fixing frame. The two ends of the telescopic spring are respectively fixed to the top of the second fixing frame and the inner wall of the second fixing groove. The two second fixing frames in the same group are arranged in an inverted V-shape.

[0016] As a preferred embodiment of the present invention, a lead screw for moving the movable seat is installed between the bottom end of the movable seat and the surface of the worktable. The lead screw runs parallel to the axis of the support column and is used to adjust the distance between the two chamfering tools.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] Equipped with a height adjustment component, the height of the support column between the first and second fixed wedges can be changed by moving the first and second fixed wedges closer to or further apart. The chamfering tool can chamfer support columns of different diameters, and can also chamfer the end face edge or the end face axis of the support column.

[0019] A friction wheel is provided, which drives the support column. The first fixed wedge, the second fixed wedge, and the friction wheel limit the position of the support column, thereby ensuring that the chamfering tool will chamfer the rotating support column at a right angle after rotation.

[0020] An auxiliary rotation component is provided, which uses the balls on the surfaces of the first and second fixed wedges to contact the support column, thereby ensuring that the support column rotates smoothly with the first and second fixed wedges.

[0021] It is equipped with pressure rollers, which press down the support column by using the pressure rollers on both sides of the support column. When the friction rollers come into contact with the support column, it prevents the support column from jumping or the support column from separating from the friction rollers. Attached Figure Description

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a structural diagram of the main body of the present invention;

[0024] Figure 2 This is a schematic diagram of the cylinder and chamfering tool of the present invention;

[0025] Figure 3 This is a schematic diagram of the height adjustment component of the present invention;

[0026] Figure 4 This is a schematic diagram of the plug, the second fixing groove, and the second fixing frame of the present invention;

[0027] Figure 5 This is a schematic diagram of the fixing block and friction wheel of the present invention;

[0028] Figure 6 This is a schematic diagram showing the chamfering of the edge of the end face of the grinding wheel and the support column of the present invention;

[0029] Figure 7 This is a schematic diagram showing the right angle at the end face of the support column of the center drill of the present invention.

[0030] Figure 8 This is a schematic diagram of the auxiliary rotation component of the present invention;

[0031] Figure 9 This is a schematic diagram of the embedded block and ball bearings of the present invention;

[0032] Figure 10 This is a schematic diagram showing the contact between the pressure wheel and the support column of the present invention;

[0033] Figure 11 This is a schematic diagram of the telescopic spring of the present invention.

[0034] In the diagram: 1. Workbench; 2. Fixed base; 3. Moving base; 4. Drive mechanism; 5. Metal chuck; 6. First fixed frame; 7. Height adjustment assembly; 71. Fixing strip; 72. First fixing wedge; 73. Second fixing wedge; 74. First motor; 75. Spur gear; 76. First tooth; 77. Second tooth; 78. T-slot; 79. T-block; 710. Fixing block; 711. Friction wheel; 712. Second drive motor; 713. Reserved slot; 8. Cylinder; 9. Auxiliary rotation assembly; 91. First fixing slot; 92. Embedded block; 93. Ball bearing; 94. Rolling groove; 95. Plug; 96. Second fixing slot; 97. Second fixed frame; 98. Pressure roller; 99. Fixing pin; 910. Telescopic spring; 10. Chamfering tool. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0037] Example 1:

[0038] Please see Figure 1 - Figure 7A device for synchronously chamfering both ends of a support column on an oil tank is shown. It includes a worktable 1, a fixed base 2, and a movable base 3. The fixed base 2 and the movable base 3 are respectively mounted on opposite sides of the surface of the worktable 1. A lead screw for moving the movable base 3 is installed between the bottom end of the movable base 3 and the surface of the worktable 1. The lead screw runs parallel to the axis of the support column. The lead screw is used to adjust the distance between two chamfering tools 10. Rotation of the lead screw causes a second fixed wedge 73 to move relative to the worktable 1, thereby bringing the chamfering tools 10 on the movable base 3 closer to or closer to the chamfering tools 10 on the worktable 1. The two chamfering cutters 10 can be moved apart to adjust their positions according to the length of the support column. A drive mechanism 4, a replaceable metal chuck 5, and chamfering cutters 10 are mounted on top of both the fixed base 2 and the movable base 3. The drive mechanism 4 drives the metal chuck 5 to rotate, and the chamfering cutters 10 are mounted on the end of the metal chuck 5. The operation of the drive mechanism 4 causes the chamfering cutters 10 at the metal chuck 5 to rotate, allowing the two chamfering cutters 10 to rotate normally. The two fixed bases 2 and the movable base 3 can be moved closer or further apart, and the two fixing bars 71 of the height adjustment component 7 can be moved closer or further apart. A height adjustment assembly 7 for supporting columns is installed between the fixed base 2 and the movable base 3. The height adjustment assembly 7 includes two fixing bars 71, which are respectively installed on the opposite edges of the fixed base 2 and the movable base 3. The two fixing bars 71 move with the fixed base 2 and the movable base 3. A first fixing wedge 72 and a second fixing wedge 73 are slidably mounted on the surfaces of the two fixing bars 71. The first fixing wedge 72 and the second fixing wedge 73 are driven to move closer or further apart. The supporting column is located on the inclined surfaces of the first fixing wedge 72 and the second fixing wedge 73. The two chamfering cutters 10 and the support column are always coplanar. Regardless of whether the support column is raised or lowered, the axis of the support column is raised or lowered along the vertical direction. The relative position of the first fixed wedge 72 and the second fixed wedge 73 is used to adjust the height of the support column, thereby chamfering the end face edge or the end face axis of the support column. The first fixed wedge 72 and the second fixed wedge 73 in the same group are closer to each other, which can increase the height of the support column. The first fixed wedge 72 and the second fixed wedge 73 in the same group are further apart, which can decrease the height of the support column. The relative position of the support column and the chamfering cutter 10 can be adjusted according to the diameter of the support column.

[0039] Please see Figure 3 - Figure 5As shown, the inclined surfaces of the first fixing wedge 72 and the second fixing wedge 73 are arranged in a V-shape, allowing the support column to be placed between the two sets of first fixing wedges 72 and second fixing wedges 73, similar to the support column being constrained by two sets of V-shaped blocks. The driving assembly includes a first motor 74, with a spur gear 75 mounted at its end. Both the interior of the first fixing wedge 72 and the interior of the second fixing wedge 73 have reserved slots 713. The spur gear 75 is located inside the reserved slots 713 of both the first fixing wedge 72 and the second fixing wedge 73. The reserved slot of the first fixing wedge 72... The bottom end of the 713 has a first tooth 76, and the top end of the reserved groove 713 of the second fixed wedge 73 has a second tooth 77. Both the first tooth 76 and the second tooth 77 mesh with the spur gear 75. The first fixed wedge 72 and the second fixed wedge 73 move in opposite directions. The rotation of the first motor 74 causes the spur gear 75 to rotate. The spur gear 75 drives the first tooth 76 of the first fixed wedge 72 and the second tooth 77 of the second fixed wedge 73 to move in opposite directions. The position of the support column at the top of the first fixed wedge 72 and the second fixed wedge 73 changes, thereby adjusting the relative position of the support column and the axis of the chamfering tool 10.

[0040] Please see Figure 3 and Figure 4 As shown, the surface of the fixing strip 71 is provided with two sets of T-slots 78, which are parallel to each other. The bottom end of the first fixing wedge 72 and the bottom end of the second fixing wedge 73 are both integrally provided with T-blocks 79. The T-blocks 79 are located inside the T-slots 78, and the cross-sections of the T-slots 78 and the T-blocks 79 are adapted to each other. The T-blocks 79 of the first fixing wedge 72 and the T-blocks 79 of the second fixing wedge 73 are slidably connected to the two sets of T-slots 78 respectively. The spur gear 75 drives the first tooth 76 and the second tooth 77 to move, so that the first fixing wedge 72 and the second fixing wedge 73 both move along the direction of the T-slots 78.

[0041] Please see Figure 3 and Figure 5As shown, a first fixing frame 6 is installed on the surface of the fixed seat 2 and the surface of the movable seat 3. A cylinder 8 is installed at the lower edge of the first fixing frame 6. The two sets of first fixing frames 6 and cylinders 8 move closer or further away from each other as the fixed seat 2 and the movable seat 3 move. A fixing block 710 is installed at the bottom of the cylinder 8. A second drive motor 712 is installed on one side wall of the fixing block 710. A friction wheel 711 is installed at the end of the second drive motor 712. The rotation of the second drive motor 712 drives the friction wheel 711 to rotate. The friction wheel 711 is located on the other side wall of the fixing block 710. The friction wheel 711 is used to drive the side wall of the support column. The first fixing wedge 72, the second fixing wedge 73, and the friction wheel 711 are used to limit the position of the cylindrical support column. The rotation of the friction wheel 711 can drive the support column to rotate between the first fixing wedge 72 and the second fixing wedge 73. The rotation of the chamfering tool 10 and the rotation of the support column are conducive to the chamfering of the end face of the support column.

[0042] Please see Figure 6 and Figure 7 As shown, the chamfering tool 10 uses a conical grinding wheel. The edge of the conical grinding wheel contacts the edge of the support column. The conical grinding wheel is used to chamfer the edges of both ends of the support column. Raising and lowering the support column causes the edge of the support column's end face to contact the edge of the bevel gear. The rotating bevel gear and the rotating support column rotate relative to each other, thus the edge of the support column's end face is chamfered by the chamfering tool 10. This edge chamfering solves problems such as sharp edges, stress concentration, assembly scratches, and burr chipping, and is a fundamental chamfering procedure essential for fuel tank support columns. Alternatively, the chamfering tool 10 can be a countersink or a center drill, with the axis of the chamfering tool 10 aligned with the axis of the support column. This tool is used to chamfer the axis positions of both ends of the support column. The axis of the lifting support column is aligned with the axis of the chamfering tool 10. The moving seat 3 is adjusted close to the fixed seat 2 by the lead screw, so that the countersink or center drill can contact the axis of the support column. The axis of the support column can be machined into a chamfer. The center chamfer of the axis can prepare for the countersunk hole. If necessary, the drill bit and the support column rotate simultaneously. The coaxiality between them is checked by a dial indicator to see if it meets the requirements. The positions of the first fixed wedge 72 and the second fixed wedge 73 are finely adjusted to meet the coaxiality requirements. The rotation speed of the grinding wheel is 1500-2000 r / min, and the rotation speed of the support column is 100-200 r / min.

[0043] Please see Figure 2 , Figure 8 - Figure 11As shown, an auxiliary rotation assembly 9 is provided between the first fixed wedge 72, the second fixed wedge 73, and the fixed block 710 to facilitate the smooth rotation of the support column. The auxiliary rotation assembly 9 includes several embedded blocks 92, which are located on the inclined surfaces of the first fixed wedge 72 and the second fixed wedge 73. The embedded blocks 92 of the first fixed wedge 72 and the second fixed wedge 73 are symmetrical about the axis of the support column. A row of balls 93 is embedded inside each first fixed groove 91. The balls 93 of the first fixed wedge 72, the balls 93 of the second fixed wedge 73, and the friction wheel 711 are all in contact with the cylindrical surface of the support column. The balls 93 are used to ensure the smooth rotation of the support column. The contact between the balls 93 and the cylindrical surface of the support column ensures that the rotation of the balls 93 does not affect the rotation of the support column and facilitates the rotation of the support column by the friction wheel 711. As long as there is a speed difference between the rotation speed of the support column and the speed of the chamfering tool 10, the chamfer of the support column can be processed.

[0044] Please see Figure 8 and Figure 9 As shown, the inclined surfaces of the first fixed wedge 72 and the second fixed wedge 73 are both provided with first fixed grooves 91. The embedded block 92 is located inside the first fixed groove 91. When the embedded block 92 is placed inside the first fixed groove 91, the ball 93 comes into contact with the cylindrical surface of the support column. The embedded block 92 is provided with a rolling groove 94. The ball 93 is located inside the rolling groove 94. A plug 95 is installed at the end of the embedded block 92. The plug 95 is used to prevent the ball 93 from falling out of the rolling groove 94. The plug 95 can limit the position of the ball 93, and the ball 93 rolls inside the rolling groove 94.

[0045] Please see Figure 8 , Figure 10 and Figure 11 As shown, a second fixing frame 97 and a fixing pin 99 are installed on the side wall of the fixing block 710 on both sides of the friction wheel 711 axis. The fixing pin 99 is located inside the fixing block 710 and is rotatably connected to the second fixing frame 97. The fixing pin 99 passes through the interior of the fixing block 710, so the second fixing frame 97 rotates around the outside of the fixing pin 99. A pressure roller 98 is installed at the bottom end of each second fixing frame 97. The pressure rollers 98 are symmetrical about the axis of the friction wheel 711. The two pressure rollers 98 in the same group are close to or far from each other, and both pressure rollers 98 in the same group are in contact with the support column. The pressure rollers 98 swing with the second fixing frame 97. The pressure rollers 98 of the second fixing frame 97 can contact the cylindrical surface of the support column. Each pressure roller 98 is used to prevent the support column from separating from the friction wheel 711.

[0046] Please see Figure 8 , Figure 10 and Figure 11As shown, a second fixing groove 96 is provided on the side wall of the fixing block 710 at the second fixing frame 97. The second fixing frame 97 is located inside the second fixing groove 96. The second fixing frame 97 and the lower pressure wheel 98 are located inside the second fixing groove 96. A telescopic spring 910 is connected to the inner wall of the second fixing groove 96 and the top side wall of the second fixing frame 97. The two ends of the telescopic spring 910 are fixed to the top of the second fixing frame 97 and the inner wall of the second fixing groove 96, respectively. The two second fixing frames 97 in the same group are arranged in an inverted V-shape. The extension and retraction of the telescopic spring 910 can drive the second fixing frame 97 to rotate around the fixing pin 99. The lower pressure wheel 98 at the bottom of the second fixing frame 97 can always contact the cylindrical surface of the support column, thereby preventing the support column from separating from the friction wheel 711.

[0047] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A device for synchronous chamfering of both ends of a support column on an oil tank, comprising a worktable (1), a fixed seat (2), and a movable seat (3), wherein the fixed seat (2) and the movable seat (3) are respectively installed on both sides of the surface of the worktable (1), and a drive mechanism (4), a replaceable tool metal chuck (5), and a chamfering tool (10) are installed above the fixed seat (2) and the movable seat (3), wherein the drive mechanism (4) is used to drive the metal chuck (5) to rotate, and the chamfering tool (10) is installed at the end of the metal chuck (5), characterized in that, A height adjustment assembly (7) for supporting columns is installed between the fixed seat (2) and the movable seat (3). The height adjustment assembly (7) includes two fixing bars (71). The two fixing bars (71) are respectively installed on the opposite edges of the fixed seat (2) and the movable seat (3). A first fixing wedge (72) and a second fixing wedge (73) are slidably installed on the surfaces of the two fixing bars (71). The first fixing wedge (72) and the second fixing wedge (73) are relatively close or relatively far apart by a driving assembly. The support column is located on the inclined surface of the first fixing wedge (72) and the inclined surface of the second fixing wedge (73). The two chamfering cutters (10) and the support column are always coplanar. The relative position of the first fixing wedge (72) and the second fixing wedge (73) is used to adjust the height of the support column so as to chamfer the edge of the end face of the support column or the axis of the end face of the support column.

2. The device according to claim 1, wherein, The inclined surfaces of the first fixed wedge (72) and the second fixed wedge (73) are arranged in a V-shape. The drive assembly includes a first motor (74), and a spur gear (75) is installed at the end of the first motor (74). The interior of the first fixed wedge (72) and the interior of the second fixed wedge (73) are provided with reserved slots (713). The spur gear (75) is located inside the reserved slots (713) of the first fixed wedge (72) and the reserved slots (713) of the second fixed wedge (73) in the same group. The bottom end of the reserved slot (713) of the first fixed wedge (72) is provided with a first tooth (76), and the top end of the reserved slot (713) of the second fixed wedge (73) is provided with a second tooth (77). The first tooth (76) and the second tooth (77) mesh with the spur gear (75). The movement directions of the first fixed wedge (72) and the second fixed wedge (73) are opposite.

3. The device according to claim 2, wherein, The surface of the fixing strip (71) is provided with two sets of T-slots (78), which are parallel to each other. The bottom end of the first fixing wedge (72) and the bottom end of the second fixing wedge (73) are integrally provided with T-blocks (79). The cross-section of the T-slots (78) and the cross-section of the T-blocks (79) are adapted to each other. The T-blocks (79) of the first fixing wedge (72) and the T-blocks (79) of the second fixing wedge (73) are slidably connected to the two sets of T-slots (78).

4. The device according to claim 3, characterized in that, The surface of the fixed seat (2) and the surface of the movable seat (3) are both equipped with a first fixed frame (6). A cylinder (8) is installed at the lower edge of the first fixed frame (6). A fixed block (710) is installed at the bottom of the cylinder (8). A second drive motor (712) is installed on one side wall of the fixed block (710). A friction wheel (711) is installed at the end of the second drive motor (712). The friction wheel (711) is located on the other side wall of the fixed block (710). The friction wheel (711) is used to drive the side wall of the support column. The first fixed wedge (72), the second fixed wedge (73), and the friction wheel (711) are used to limit the position of the cylindrical support column.

5. The device according to claim 4, wherein, The chamfering tool (10) is a conical grinding wheel, the edge of which is in contact with the edge of the support column. The conical grinding wheel is used to chamfer the edges of both ends of the support column. Alternatively, the chamfering tool (10) is a countersink or a center drill, the axis of which is aligned with the axis of the support column. The countersink or center drill is used to chamfer the axis of both ends of the support column.

6. The device according to claim 5, wherein, An auxiliary rotating assembly (9) is provided between the first fixed wedge (72), the second fixed wedge (73) and the fixed block (710) to assist the smooth rotation of the support column. The auxiliary rotating assembly (9) includes several embedded blocks (92). The embedded blocks (92) are located on the inclined surfaces of the first fixed wedge (72) and the second fixed wedge (73). A row of balls (93) is embedded inside each first fixed groove (91). The balls (93) of the first fixed wedge (72), the balls (93) of the second fixed wedge (73) and the friction wheel (711) are all in contact with the cylindrical surface of the support column. The balls (93) are used to ensure the smooth rotation of the support column.

7. The device according to claim 6, wherein, The inclined surfaces of the first fixed wedge (72) and the second fixed wedge (73) are both provided with a first fixed groove (91). The embedded block (92) is located inside the first fixed groove (91). The embedded block (92) is provided with a rolling groove (94). The ball (93) is located inside the rolling groove (94). A plug (95) is installed at the end of the embedded block (92). The plug (95) is used to prevent the ball (93) from falling out of the rolling groove (94).

8. The device according to claim 7, wherein, The sidewall of the fixing block (710) and both sides of the friction wheel (711) are equipped with a second fixing frame (97) and a fixing pin (99). The fixing pin (99) is located inside the fixing block (710). The fixing pin (99) and the second fixing frame (97) are rotatably connected. Each second fixing frame (97) has a pressure wheel (98) installed at its bottom end. The pressure wheel (98) is symmetrical about the axis of the friction wheel (711). The two pressure wheels (98) in the same group are close to or far from each other. Both pressure wheels (98) in the same group are in contact with the support column. Each pressure wheel (98) is used to prevent the support column from separating from the friction wheel (711).

9. The synchronous chamfering processing device for both ends of the support column on the oil tank according to claim 8, characterized in that, The side wall of the fixing block (710) and the second fixing frame (97) are provided with a second fixing groove (96). The second fixing frame (97) is located inside the second fixing groove (96). The inner wall of the second fixing groove (96) and the top side wall of the second fixing frame (97) are connected with a telescopic spring (910). The two ends of the telescopic spring (910) are fixed to the top of the second fixing frame (97) and the inner wall of the second fixing groove (96) respectively. The two second fixing frames (97) in the same group are arranged in an inverted V shape.

10. A device for synchronously chamfering both ends of a support column on an oil tank according to any one of claims 1-9, characterized in that, A lead screw for moving the movable seat (3) is installed between the bottom end of the movable seat (3) and the surface of the worktable (1). The direction of the lead screw is parallel to the axis of the support column. The lead screw is used to adjust the distance between the two chamfering tools (10).

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