Welding tool for CNC machining

Abstract

The utility model relates to the field of machining, in particular to a welding tool for CNC (computer numerical control) machining, which comprises a base, mounting plates are mounted on two sides of the top of the base, mounting cavities are formed in the surfaces of the two mounting plates, turntables are rotatably mounted in the mounting cavities, and a conical jacking block is fixedly mounted between the two turntables; when a pipe sheet metal part is clamped, the pipe sheet metal part is arranged on the surfaces of expansion plates in two rotating discs in a sleeving mode, meanwhile, a servo motor rotates reversely to drive belt wheels to rotate, and the two belt wheels drive a driving bevel gear to rotate synchronously through transmission connection of a transmission belt; the driving bevel gear drives a lead screw to rotate through meshing connection with a driven bevel gear, an expansion plate is driven to expand through threaded connection between the lead screw and a supporting rod, pipe type sheet metal parts with different thicknesses are supported, and meanwhile shaft type sheet metal parts are clamped through a conical jacking block between two rotating discs.

Description

Technical Field

[0001] The utility model relates to the field of machining, in particular to a welding tool for CNC machining. Background Art

[0002] Welding fixtures are a set of flexible fixtures for welding, fixing, pressing and positioning. They are mainly used for welding various weldable materials, large, medium and small materials. However, the existing welding fixtures for CNC machining of shaft sheet metal parts on the market have unsatisfactory clamping and positioning effects on shaft sheet metal parts, and the operation is cumbersome, which affects the welding efficiency. In addition, the contact between the welding fixture and the shaft sheet metal parts may cause relative displacement, resulting in the inability to guarantee the welding accuracy and welding effect of the shaft sheet metal parts.

[0003] After searching, it is found that the authorization announcement number is: CN220718307U, which is a welding tool for CNC processing. Although the device has the advantages of firm and reliable clamping of shaft sheet metal parts, not easy to loosen, precise positioning, and simple operation, the device can only clamp shaft sheet metal parts. Because the welding tool needs to process different types of sheet metal parts, the clamping parts need to be replaced when processing pipe sheet metal parts, and the practicality is low.

[0004] Therefore, a welding tool for CNC machining is proposed to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to provide a welding tool for CNC processing in order to solve the above-mentioned problem, which improves the problem that the device can only clamp shaft-type sheet metal parts. Since the welding tool needs to process different types of sheet metal parts, the clamping parts need to be replaced when processing pipe-type sheet metal parts, which has low practicality.

[0006] The utility model achieves the above-mentioned purpose through the following technical scheme: a welding tool for CNC processing, comprising: a base, mounting plates are installed on both sides of the top of the base, mounting cavities are opened on the surfaces of the two mounting plates, a turntable is rotatably installed inside the mounting cavity, and a conical top tightening block is fixedly installed between the two turntables; a mounting member, the mounting member is installed on one side of the top of the base and can fix the pipe sheet metal parts; wherein the mounting member includes a gear ring installed on one side of the surface of a turntable, a servo motor is installed on one side of the top of the base, a rotating rod is welded on the output end of the servo motor, a transmission gear is installed on the surface of the rotating rod, the transmission gear is meshed with the gear ring, and an expansion mechanism is installed on one side of the turntable.

[0007] Preferably, the expansion mechanism includes a connecting rod fixedly mounted on one side of the turntable, a driving bevel gear being mounted on the surface of the connecting rod, four driven bevel gears being meshingly mounted on one side of the driving bevel gear, four screw rods being hingedly mounted on one side of the turntable, one end of the screw rod being fixedly connected to the driven bevel gear, a support rod being threadedly connected to the surface of the four screw rods, one end of the support rod passing through the turntable and extending to one side of the turntable, and an expansion plate being fixedly mounted on one end of the support rod located on one side of the turntable.

[0008] Preferably, the surfaces of the rotating rod and the connecting rod are both provided with pulleys via a one-way bearing sleeve, a transmission belt is wound around the surfaces of the two pulleys, and the two pulleys are connected via a transmission belt.

[0009] Preferably, four strip-shaped holes are opened on the surface of one of the turntables, and one ends of the four support rods pass through the strip-shaped holes and are slidably connected to the strip-shaped holes.

[0010] Preferably, the inner walls of the two installation cavities are provided with annular slideways, and the outer walls of the two turntables are fixedly provided with annular slide bars, which are slidably connected to the annular slideways.

[0011] Preferably, two guide rails are fixedly mounted on the top of the base, a slide seat is slidably mounted on the surface of the guide rail, and the top of the slide seat is fixedly connected to the bottom of a mounting plate.

[0012] Preferably, threaded holes are provided on the surfaces of the slide seat and the guide rail, a locking bolt is installed through the top of the slide seat, and the locking bolt is threadedly connected to the threaded hole.

[0013] The beneficial effects of the utility model are:

[0014] When clamping the tube sheet metal parts, the tube sheet metal parts are sleeved on the surface of the expansion plate inside the two turntables. At the same time, the servo motor reverses to drive the pulley to rotate, and the transmission connection between the two pulleys through the transmission belt drives the active bevel gear to rotate synchronously. The active bevel gear drives the screw rod to rotate through the meshing connection with the driven bevel gear, and the expansion plate is driven to expand by the threaded connection between the screw rod and the support rod, so as to support the tube sheet metal parts of different thicknesses. At the same time, the conical top tightening block between the two turntables is used to clamp the shaft sheet metal parts, so that the shaft sheet metal parts and the tube sheet metal parts can be clamped according to the processing needs, and there is no need to replace the clamping parts during the sheet metal processing, so as to increase the practicality of the device.

[0015] When the pipe sheet metal parts need to be rotated for welding, the servo motor rotates forward to drive the transmission gear to rotate, and the transmission gear drives a turntable to rotate inside the installation cavity through the meshing connection with the gear ring, so as to drive the pipe sheet metal parts inside the two turntables to rotate, and the connection between the two one-way bearings and the pulley can prevent the transmission gear from rotating when the expansion plate expands, which will affect the clamping of the pipe sheet metal parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the expansion mechanism structure of the utility model;

[0018] Figure 3 for Figure 2 Enlarged view of area A in the middle;

[0019] Figure 4 This is a schematic diagram of the support rod structure of the utility model;

[0020] Figure 5 for Figure 1 Enlarged view of area B in the middle.

[0021] In the figure: 10, base; 11, mounting plate; 12, mounting cavity; 13, turntable; 14, conical top block; 15, guide rail; 16, slide seat; 17, threaded hole; 18, locking bolt; 20, mounting piece; 21, gear ring; 22, servo motor; 23, transmission gear; 24, expansion mechanism; 241, connecting rod; 242, active bevel gear; 243, driven bevel gear; 244, lead screw; 245, support rod; 246, expansion plate; 247, pulley; 248, transmission belt; 249, strip hole. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] When implementing: Figure 1-5 As shown, a welding tool for CNC processing includes:

[0024] A base 10, with mounting plates 11 mounted on both sides of the top of the base 10, mounting cavities 12 are provided on the surfaces of the two mounting plates 11, a turntable 13 is rotatably mounted inside the mounting cavity 12, and a conical top tightening block 14 is fixedly mounted between the two turntables 13;

[0025] A mounting member 20, which is mounted on one side of the top of the base 10 and can fix the pipe-like sheet metal parts;

[0026] The inner walls of the two installation cavities 12 are provided with annular slideways, and the outer walls of the two rotating disks 13 are fixedly provided with annular slide bars, which are slidably connected with the annular slideways;

[0027] The mounting member 20 includes a gear ring 21 mounted on one side of the surface of a rotating disk 13, a servo motor 22 is mounted on one side of the top of the base 10, a rotating rod is welded to the output end of the servo motor 22, a transmission gear 23 is mounted on the surface of the rotating rod, and the transmission gear 23 is meshedly connected with the gear ring 21, and an expansion mechanism 24 is mounted on one side of the rotating disk 13;

[0028] In this embodiment, the servo motor 22 rotates forward to drive the transmission gear 23 to rotate, and the transmission gear 23 drives a turntable 13 to rotate inside the installation cavity 12 through the meshing connection with the gear ring 21, so as to drive the tube-like sheet metal parts inside the two turntables 13 to rotate.

[0029] like Figure 2 , Figure 3 and Figure 4 As shown, the expansion mechanism 24 includes a connecting rod 241 fixedly installed on one side of a rotating disk 13, a driving bevel gear 242 is installed on the surface of the connecting rod 241, and four driven bevel gears 243 are meshed and installed on one side of the driving bevel gear 242, and four screw rods 244 are hingedly installed on one side of a rotating disk 13, one end of the screw rod 244 is fixedly connected to the driven bevel gear 243, and the surfaces of the four screw rods 244 are all threadedly connected with support rods 245, one end of the support rod 245 penetrates the rotating disk 13 and extends to one side of the rotating disk 13, and an expansion plate 246 is fixedly installed on one end of the support rod 245 located on one side of the rotating disk 13; the surfaces of the rotating rod and the connecting rod 241 are both provided with pulleys 247 through one-way bearing sleeves, and the surfaces of the two pulleys 247 are both wound with transmission belts 248, and the two pulleys 247 are connected through the transmission belt 248.

[0030] In this embodiment, the tube sheet metal parts are sleeved on the surface of the expansion plate 246 inside the two turntables 13. At the same time, the servo motor 22 reverses to drive the pulley 247 to rotate, and the transmission connection between the two pulleys 247 through the transmission belt 248 drives the active bevel gear 242 to rotate synchronously. The active bevel gear 242 drives the screw rod 244 to rotate through the meshing connection with the driven bevel gear 243, and the threaded connection between the screw rod 244 and the support rod 245 drives the expansion plate 246 to expand, so as to support the tube sheet metal parts of different thicknesses. At the same time, the conical top tightening block 14 between the two turntables 13 is used to clamp the shaft sheet metal parts.

[0031] In this embodiment, four strip holes 249 are formed on the surface of a rotating disk 13, and one end of each of the four support rods 245 passes through the strip holes 249 and is slidably connected to the strip holes 249; the support rods 245 can slide inside the strip holes 249 to expand the expansion plate 246;

[0032] In this embodiment, by connecting two one-way bearings with the pulley 247, it is possible to prevent the transmission gear 23 from rotating when the expansion plate 246 is expanded, thereby preventing the clamping of the tube-type sheet metal parts from being affected.

[0033] like Figure 1 and Figure 5 As shown, two guide rails 15 are fixedly installed on the top of the base 10, and a slide seat 16 is slidably installed on the surface of the guide rail 15, and the top of the slide seat 16 is fixedly connected to the bottom of a mounting plate 11; the surfaces of the slide seat 16 and the guide rail 15 are provided with threaded holes 17, and a locking bolt 18 is installed through the top of the slide seat 16, and the locking bolt 18 is threadedly connected to the threaded hole 17;

[0034] In this embodiment, a mounting plate 11 and a turntable 13 can be easily driven to slide on the top of the base 10, so as to facilitate clamping of pipe sheet metal parts and shaft sheet metal parts of different lengths.

[0035] When the utility model clamps the pipe sheet metal parts, the pipe sheet metal parts are sleeved on the surface of the expansion plate 246 inside the two turntables 13. At the same time, the servo motor 22 reverses to drive the pulley 247 to rotate, and the two pulleys 247 are connected by the transmission belt 248 to drive the active bevel gear 242 to rotate synchronously. The active bevel gear 242 drives the screw rod 244 to rotate through the meshing connection with the driven bevel gear 243, and uses the threaded connection between the screw rod 244 and the support rod 245 to drive the expansion plate 246 to expand, so as to support the pipe sheet metal parts of different thicknesses. At the same time, the conical top tightening block 14 between the two turntables 13 is used to clamp the shaft sheet metal parts; and when the pipe sheet metal parts need to be rotated during welding, the servo motor 22 rotates forward to drive the transmission gear 23 to rotate, and the transmission gear 23 drives a turntable 13 to rotate inside the installation cavity 12 through the meshing connection with the gear ring 21, so as to drive the pipe sheet metal parts inside the two turntables 13 to rotate.

[0036] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A welding tool for CNC machining, characterized in that: include: A base (10), wherein mounting plates (11) are mounted on both sides of the top of the base (10), mounting cavities (12) are provided on the surfaces of the two mounting plates (11), a rotating disk (13) is rotatably mounted inside the mounting cavity (12), and a conical tightening block (14) is fixedly mounted between the two rotating disks (13); A mounting member (20), wherein the mounting member (20) is mounted on one side of the top of the base (10) and can fix the tube-type sheet metal member; The mounting member (20) comprises a toothed ring (21) mounted on one side of the surface of a rotating disk (13); a servo motor (22) is mounted on one side of the top of the base (10); a rotating rod is welded to the output end of the servo motor (22); a transmission gear (23) is mounted on the surface of the rotating rod; the transmission gear (23) is meshingly connected to the toothed ring (21); and an expansion mechanism (24) is mounted on one side of the rotating disk (13).

2. A welding tool for CNC machining according to claim 1, characterized in that: The expansion mechanism (24) comprises a connecting rod (241) fixedly mounted on one side of a rotating disk (13); a driving bevel gear (242) is mounted on the surface of the connecting rod (241); four driven bevel gears (243) are meshingly mounted on one side of the driving bevel gear (242); four screw rods (244) are hingedly mounted on one side of the rotating disk (13); one end of the screw rod (244) is fixedly connected to the driven bevel gear (243); surfaces of the four screw rods (244) are all threadedly connected with support rods (245); one end of the support rod (245) passes through the rotating disk (13) and extends to one side of the rotating disk (13); an expansion plate (246) is fixedly mounted on one end of the support rod (245) located on one side of the rotating disk (13).

3. A welding tool for CNC machining according to claim 2, characterized in that: The surfaces of the rotating rod and the connecting rod (241) are both provided with pulleys (247) via a one-way bearing sleeve, and the surfaces of the two pulleys (247) are both wound with a transmission belt (248), and the two pulleys (247) are connected in transmission via the transmission belt (248).

4. The welding tool for CNC machining according to claim 2, characterized in that: Four strip-shaped holes (249) are formed on the surface of one of the rotating disks (13), and one end of each of the four support rods (245) passes through the strip-shaped holes (249) and is slidably connected to the strip-shaped holes (249).

5. The welding tool for CNC machining according to claim 1, characterized in that: The inner walls of the two installation cavities (12) are provided with an annular slideway, and the outer walls of the two rotating disks (13) are fixedly provided with an annular slide bar, which is slidably connected to the annular slideway.

6. The welding tool for CNC machining according to claim 1, characterized in that: Two guide rails (15) are fixedly mounted on the top of the base (10), a slide seat (16) is slidably mounted on the surface of the guide rail (15), and the top of the slide seat (16) is fixedly connected to the bottom of a mounting plate (11).

7. The welding tool for CNC machining according to claim 6, characterized in that: The surfaces of the slide seat (16) and the guide rail (15) are both provided with threaded holes (17), a locking bolt (18) is installed through the top of the slide seat (16), and the locking bolt (18) is threadedly connected to the threaded hole (17).

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