Groove cutting device for steel pipe to be welded

Abstract

The utility model discloses a beveled edge cutting device for a steel pipe to be welded, which belongs to the technical field of beveling machines and comprises a motor, a reduction gearbox, a spindle box, a spindle, an expansion component and a feed component, the feed component comprises a cutterhead, a first clamp component and a second clamp component are arranged on the cutterhead, a beveling cutter is detachably connected onto the first clamp component, and the second clamp component is detachably connected onto the second clamp component. The second clamp assembly is detachably connected with a deburring block. The deburring block can be fixed to the position corresponding to the beveling cutter through the second clamp assembly, the deburring block can remove burrs at the two ends of a steel pipe groove after beveling operation, and the machining efficiency is improved; the deburring block can be adjusted in left-right position and is suitable for deburring steel pipes with different pipe diameters; the device can be suitable for steel pipes with different wall thicknesses and is wide in application range.

Description

Technical Field

[0001] The utility model belongs to the technical field of beveling machines, and in particular relates to a beveling cutting device for steel pipes to be welded. Background Art

[0002] A beveling machine is a specialized machine used to bevel the workpiece at the desired location before welding to ensure welding quality during the welding manufacturing process. Existing internal expansion beveling machines are usually inserted into the inner wall of the pipe through an expansion structure, automatically positioning and centering the entire beveling machine. The beveling cutter is mounted on a cutterhead and positioned corresponding to the pipe wall. The motor drives the cutterhead to rotate, and the rotating cutterhead then drives the beveling cutter to cut the pipe wall, forming a bevel at a certain angle on the pipe wall. This type of beveling machine also has mobility issues during use. After the beveling cuts the pipe wall, burrs are easily formed on both ends of the bevel. Deburring requires a steel file or grinding head after the beveling operation, which is rather cumbersome. Utility Model Content

[0003] The technical problem solved by the utility model is to provide a beveling cutting device for steel pipes to be welded, which can quickly remove burrs after beveling operation.

[0004] Technical solution: In order to solve the above technical problems, the technical solution adopted by this utility model is as follows:

[0005] A device for beveling steel pipes to be welded, comprising a motor, a reduction gearbox connected to the motor, a spindle box connected to the reduction gearbox, a spindle passing through the spindle box, an expansion assembly connected to the spindle, and a feed assembly rotatably connected to the spindle box, wherein the feed assembly comprises a cutter disc, a first clamp assembly and a second clamp assembly are provided on the cutter disc, a beveling cutter is detachably connected to the first clamp assembly, and a deburring block is detachably connected to the second clamp assembly.

[0006] Furthermore, the cutter disc is provided with a first working groove corresponding to the first clamp assembly, the first clamp assembly includes a first clamping block arranged in the first working groove and a first clamping bolt for clamping the first clamping block, and the first clamping block is provided with a tool groove corresponding to the beveling cutter.

[0007] Furthermore, the cutter disc is provided with a second working groove corresponding to the second clamp assembly, and the second clamp assembly includes a second clamping block arranged in the second working groove and a second clamping bolt for clamping the second clamping block.

[0008] Furthermore, the deburring block includes a base block and a first working rod and a second working rod connected to the base block. The first working rod and the second working rod are located on both sides of the steel pipe groove. The first working rod is provided with a first notch, and the first notch is used to remove burrs at one end of the steel pipe groove. The second working rod is provided with a grinding layer, and the grinding layer is used to remove burrs at the other end of the steel pipe groove.

[0009] Furthermore, the deburring block further includes a fixing rod connected to the base block, and the second working rod is movably connected to the fixing rod via a spring.

[0010] Furthermore, the working surface of the grinding layer is arc-shaped.

[0011] Furthermore, two first clamp assemblies are symmetrically arranged.

[0012] Furthermore, the cutter disc includes a first disc block and a second disc block, one of the two first clamp assemblies is arranged on the first disc block, and the other is arranged on the second disc block.

[0013] Beneficial effects: Compared with the prior art, the utility model has the following advantages:

[0014] 1. By arranging the first clamp assembly and the second clamp assembly on the cutter head, the deburring block can be fixed to the corresponding position of the beveling cutter by using the second clamp assembly. The deburring block can remove burrs at both ends of the steel pipe groove after the beveling operation, thereby improving the processing efficiency;

[0015] 2. The deburring block can be adjusted left and right, suitable for deburring steel pipes of different diameters;

[0016] 3. The deburring block includes a second working rod, which is connected to the fixed rod through a spring, so that it can be applied to steel pipes with different wall thicknesses and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the device of the embodiment of the utility model;

[0018] Figure 2 1. It is a schematic diagram of the front structure of the cutter head in the embodiment;

[0019] Figure 3 1 is a schematic structural diagram of the first clamp assembly and the second clamp assembly of the embodiment;

[0020] Figure 4 This is a schematic diagram of the structure of a deburring block in an embodiment;

[0021] Figure 5 is a schematic diagram of the cross-sectional structure of the second working rod in the embodiment;

[0022] Figure 6It is a structural diagram of the deburring block in working state. DETAILED DESCRIPTION

[0023] The present invention will be further illustrated below with reference to specific embodiments. The embodiments are implemented based on the technical solutions of the present invention. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention.

[0024] like Figure 1 As shown, a device for beveling a steel pipe to be welded includes a motor 1, a reduction gearbox 2, a spindle box 3, a spindle 4, an expansion assembly 5 and a feed assembly. The motor 1 adopts an existing AC 220V motor, the reduction gearbox 2 is connected to the output end of the motor 1, the reduction gearbox 2 adopts an existing planetary reduction gearbox, the output end of the reduction gearbox 2 is connected to the spindle box 3, the spindle 4 is arranged through the spindle box 3, the feed assembly is rotatably connected to the spindle box 3, the feed assembly can adopt an existing beveling machine feed assembly, the feed assembly includes a cutter disc 6, a rotating sleeve connected to the cutter disc 6, inner and outer screw sleeves arranged on the spindle box 3, and a feed handwheel 31 connected to the inner and outer screw sleeves, the rotating sleeve is rotatably connected to the spindle box 3 through a bearing, and the spindle 4 penetrates the rotating shaft Sleeve, a bearing is also provided between the rotating sleeve and the main shaft 4, so that the rotating sleeve and the main shaft 4 are also rotatably connected, a circle of worm gear is provided outside the rotating sleeve, and a worm corresponding to the worm gear is connected to the output end of the reduction gear box 2, so that the motor 1 can drive the rotating sleeve to rotate when it is working, and the cutter disc 6 is located below the spindle box 3. The lower end of the rotating sleeve is detachably connected to the cutter disc 6 by a connecting bolt 651. When the rotating sleeve rotates, it drives the cutter disc 6 to rotate. The feed handwheel 31 adopts a ratchet feed handwheel. When the feed handwheel 31 works, it drives the inner and outer screw sleeves connected thereto to move downward, thereby pressing the spindle box 3 downward. The spindle box 3 drives the rotating sleeve and the cutter disc 6 to move downward as a whole to complete the feeding. The feeding component can adopt the feeding scheme of the replaceable tool holder beveling machine with the authorization announcement number CN 214023766 U, and drives its beveling tool holder downward by the feed handwheel.

[0025] like Figure 1As shown, the expansion assembly 5 is connected to the main shaft 4, and the expansion assembly 5 includes an expansion nut 51, an expansion core shaft 52, an expansion pull disc 53, an expansion base 54, an expansion block 55 and an expansion extension block 56. The expansion core shaft 52 runs through the spindle box 3 and the main shaft 4, and the upper end of the expansion core shaft 52 is located above the feed handwheel 31. The expansion nut 51 is connected to the upper end of the expansion core shaft 52, and the lower end of the expansion core shaft 52 is located below the lower end of the main shaft 4. The expansion pull disc 53 is connected to the lower end of the expansion core shaft 52. When the expansion nut 51 is rotated, the expansion core shaft 52 drives the expansion pull disc 53 to move upward, and the expansion base 54 is connected to the lower end of the main shaft 4. Three expansion blocks 55 are distributed in a ring array on the expansion base 54, and the expansion base 54 is provided with an inclined groove corresponding to the expansion blocks 55. When the expansion pull disc 53 moves upward, it drives the three expansion blocks 55 along The inclined groove is upward, so that the outer diameter of the circle where the three expansion blocks 55 are located is expanded, and the three expansion blocks 55 can be pressed against the inner wall of the steel pipe to be processed. The three expansion blocks 55 are self-centering, so that the axis of the main shaft 4 and the axis of the steel pipe to be processed are in the same straight line, which is convenient for subsequent groove processing. The expansion extension block 56 is cylindrical, and the 6 expansion extension blocks 56 are detachably connected to the expansion block 55. The 3 expansion extension blocks 56 are distributed in a group of annular arrays. The expansion extension block 56 is used to increase the outer diameter of the circle where the expansion block 55 is located, thereby increasing the scope of application, which is convenient for selecting different expansion extension blocks 56 according to the steel pipes to be processed with different inner diameters.

[0026] like Figure 1 、 Figure 2 and Figure 3As shown, the cutterhead 6 is provided with a first fixture assembly 61 and a second fixture assembly 62. The first fixture assembly 61 is detachably connected to a beveling cutter 7. When the cutterhead 6 rotates, the beveling cutter 7 is driven to rotate, thereby beveling the steel pipe. A central through hole 65 corresponding to the main shaft 4 is provided in the center of the cutterhead 6. A circle of connecting bolts 651 is provided around the central through hole 65. The cutterhead 6 is connected to the rotating sleeve via this circle of connecting bolts 651. When the rotating sleeve rotates, the cutterhead 6 is driven to rotate. Two first fixture assemblies 61 are provided on the cutterhead 6. The two first fixture assemblies 61 are arranged in a circular array with the center of the central through hole 65 as the center point. Thus, the two first fixture assemblies 61 can connect two beveling cutters 7 and perform beveling operations simultaneously. The cutterhead 6 is provided with a first working groove 601 corresponding to the first clamp assembly 61. The first clamp assembly 61 includes a first clamping block 611 and a first clamping bolt 612. The first clamping block 611 is slidably disposed within the first working groove 601. A first adjustment bolt 613 is threadedly connected to the back of the first clamping block 611. A first adjustment slot corresponding to the first adjustment bolt 613 is provided on the back of the cutterhead 6. The first adjustment bolt 613 slides left and right in the first adjustment slot, driving the first clamping block 611 to slide left and right within the first working groove 601, thereby adjusting the left and right position of the first clamping block 611. The first clamping block 611 is provided with a cutting groove 6111 corresponding to the beveling cutter 7. During use, the beveling cutter 7 is placed in the cutting groove 6111. Multiple first clamping bolts 612 are provided on the cutterhead 6 at positions corresponding to the first working groove 601. The front end of the first clamping bolt 612 is located within the first working groove 601. When tightened, the first clamping bolt 612 compresses the first clamping block 611. During use, the first clamping block 611 is first driven to slide left and right within the first working groove 601 to an appropriate position according to the diameter of the steel pipe being processed via the first adjusting bolt 613. The first adjusting bolt 613 is then tightened. After the beveling cutter 7 is placed within the cutter groove 6111, the corresponding plurality of first clamping bolts 612 are tightened to clamp the beveling cutter 7. In this embodiment, the cutter head 6 is composed of a first disc block 63 and a second disc block 64. Both the first disc block 63 and the second disc block 64 are rectangular. One of the two first clamping assemblies 61 is located at one end of the first disc block 63, and the other is located at the other end of the second disc block 64.

[0027] like Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown, the second clamp assembly 62 includes a second clamping block 621 and a second clamping bolt 622. The cutter head 6 is provided with a second working groove 602 corresponding to the second clamping block 621. The second clamping block 621 is disposed within the second working groove 602. The second clamping bolt 622 is disposed at a position corresponding to the second working groove 602, and the front end of the second clamping bolt 622 enters the second working groove 602. A deburring block 8 is detachably connected to the second clamp assembly 62. After the beveling process is completed, the deburring block 8 is placed in the second working groove 602 at a position corresponding to the beveling cutter 7. The second clamping bolt 622 is tightened to compress the second clamping block 621, and the second clamping block 621 compresses and secures the deburring block 8. The deburring block 8 includes a base block 81, a first working rod 82, a second working rod 83 and a fixed rod 84. The deburring block 8 is a rectangular body. The base block 81 is used to be clamped by the second clamp assembly 62. The first working rod 82 and the fixed rod 84 are connected to the left and right sides of the base block 81. The second working rod 83 is located between the first working rod 82 and the fixed rod 84. The second working rod 83 is movably connected to the fixed rod 84 through a plurality of springs 85. A first notch 821 is provided on the first working rod 82. The first notch 821 is a rectangular notch. A grinding layer 831 is provided on the second working rod 83. The working surface of the grinding layer 831 is arc-shaped, which reduces the resistance between the second working rod 83 and the steel pipe when the deburring block 8 is rotated. When the deburring block 8 is in use, as shown in FIG. Figure 5 As shown, the first working rod 82 and the second working rod 83 are located on either side of the groove 91 of the steel pipe 9. The first notch 821 corresponds to the upper end of the groove 91, and the abrasive layer 831 of the second working rod 83 abuts the lower end of the groove 91 under the action of the spring 85. When the cutter head 6 drives the deburring block 8 to rotate, the first notch 821 is used to remove burrs at the upper end of the steel pipe groove, and the abrasive layer 831 is used to remove burrs at the lower end of the steel pipe groove. Because the second working rod 83 is connected to the fixed rod 84 via the spring 85, it can accommodate steel pipes of various wall thicknesses.

[0028] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A device for cutting the groove of a steel pipe to be welded, characterized in that: The invention comprises a motor (1), a reduction box (2) connected to the motor (1), a spindle box (3) connected to the reduction box (2), a spindle (4) passing through the spindle box (3), a tightening assembly (5) connected to the spindle (4), and a feed assembly rotatably connected to the spindle box (3), wherein the feed assembly comprises a cutter disc (6), a first clamp assembly (61) and a second clamp assembly (62) are provided on the cutter disc (6), a beveling cutter (7) is detachably connected to the first clamp assembly (61), and a deburring block (8) is detachably connected to the second clamp assembly (62).

2. The device for cutting the groove of the steel pipe to be welded according to claim 1, characterized in that: The cutter disc (6) is provided with a first working groove (601) corresponding to the first clamp assembly (61); the first clamp assembly (61) comprises a first clamping block (611) arranged in the first working groove (601) and a first clamping bolt (612) for clamping the first clamping block (611); the first clamping block (611) is provided with a tool groove (6111) corresponding to the beveling cutter (7).

3. The device for cutting the groove of the steel pipe to be welded according to claim 2, characterized in that: The cutter disc (6) is provided with a second working groove (602) corresponding to the second clamp assembly (62), and the second clamp assembly (62) includes a second clamp block (621) arranged in the second working groove (602) and a second clamping bolt (622) for clamping the second clamp block (621).

4. The device for cutting the groove of a steel pipe to be welded according to claim 1, characterized in that: The deburring block (8) includes a base block (81) and a first working rod (82) and a second working rod (83) connected to the base block (81). The first working rod (82) and the second working rod (83) are located on both sides of the steel pipe groove. The first working rod (82) is provided with a first notch (821), and the first notch (821) is used to remove burrs at one end of the steel pipe groove. The second working rod (83) is provided with a grinding layer (831), and the grinding layer (831) is used to remove burrs at the other end of the steel pipe groove.

5. The device for cutting the groove of the steel pipe to be welded according to claim 4, characterized in that: The deburring block (8) further comprises a fixing rod (84) connected to the base block (81), and the second working rod (83) is movably connected to the fixing rod (84) via a spring (85).

6. The device for cutting the groove of the steel pipe to be welded according to claim 4, characterized in that: The working surface of the grinding layer (831) is arc-shaped.

7. The device for cutting the groove of a steel pipe to be welded according to claim 1, characterized in that: Two of the first clamp assemblies (61) are symmetrically arranged.

8. The device for cutting the groove of the steel pipe to be welded according to claim 7, characterized in that: The cutter disc (6) comprises a first disc block (63) and a second disc block (64); one of the two first clamp assemblies (61) is arranged on the first disc block (63), and the other is arranged on the second disc block (64).

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