Simple chamfering device for multi-pipe-diameter chamfering

Abstract

The utility model discloses a simple chamfering device used for multi-pipe-diameter chamfering, which comprises a shell, a chamfering device, a plurality of connecting rods and a plurality of connecting rods, the shell is in a non-closed cylindrical shape, and the side wall of the shell is provided with an opening to form a non-closed structure; the first steps are arranged on the inner wall of the shell, and the number of the first steps is at least one; the first groove body is formed in the radial inner wall of the shell and located on the outer side of the circumferential direction of the first step, and the number of the first groove body is at least one; the blade is arranged in a first matching groove in the shell, and the first matching groove is located in the circumferential range of the first step; wherein when the number of the first steps is larger than one, the first steps are arranged in the direction from the axial end opening of the shell to the center of the shell, the diameters of all the first steps in the direction from the axial end opening of the shell to the center of the shell are sequentially reduced, the swing amplitude is small when the shell rotates, and chamfering can be conveniently conducted on the end opening of the pipe in a narrow space; and the first step can meet the chamfering positioning requirements of pipes with different pipe diameters.

Description

Technical Field

[0001] The utility model relates to the technical field of chamfering devices for pipe connection, in particular to a simple chamfering device for chamfering multi-diameter pipes. Background Art

[0002] Traditional chamfering tools fail to effectively wrap the tube in the outer diameter direction and fail to position the tube in the axial direction, resulting in poor chamfering results.

[0003] Moreover, since the traditional chamfering machine does not adopt a compact cylindrical shape, some of its shapes are far away from the central axis of rotation, and its shape swings greatly during chamfering, and it occupies a large space, which makes it inconvenient to operate in a narrow space.

[0004] In addition, when cutting pipes, the pipe ends are often cut crooked, which can easily lead to uneven chamfering. The protruding ends are often chamfered more, while the non-protruding ends are chamfered less or even not cut, which seriously affects the chamfering effect. Usually, the most unfavorable situation for chamfering is when the most protruding part of the pipe end is turned to the radially symmetrical position of the blade. Because the protruding end of the pipe is against the stop step, the non-protruding end of the pipe that is turning to the direction of the blade is relatively far away from the blade and is rarely cut by the blade, or even the pipe end cannot be cut by the blade. Utility Model Content

[0005] In view of the above technical deficiencies, the utility model provides a chamfering device with a small swing amplitude when the shell rotates, which is convenient for chamfering the pipe port in a narrow space, and the first step can meet the chamfering positioning needs of pipes of different diameters.

[0006] To achieve the above object, the utility model is implemented through the following technical solutions: The utility model discloses a simple chamfering device for chamfering multiple pipe diameters, comprising:

[0007] The shell is in the shape of a non-closed cylinder, and the side wall of the shell is provided with an opening to form a non-closed structure;

[0008] A first step is provided on the inner wall of the housing, and the number of the first step is at least one;

[0009] A first groove body is arranged on the radial inner wall of the housing and is located on the outer side of the first step in the circumferential direction, and the number of the first groove body is at least one;

[0010] a blade, disposed in a first matching groove in the housing, wherein the first matching groove is located within the circumference of the first step;

[0011] Among them, when the number of the first steps is greater than one, the first steps are all located at one end of the shell in the axial direction or at both ends of the shell in the axial direction, and the first steps are arranged along the direction from the axial port of the shell to the center of the shell, and the diameters of all the first steps in the direction from the axial port of the shell to the center of the shell decrease successively, and a first groove body within the circumference of the first step is symmetrically positioned with the first matching groove.

[0012] Furthermore, it also includes a reducing insert, which is fitted on the inner sides of two adjacent first steps in the axial direction of the shell, and a second step is eccentrically arranged on the inner side of the end with a larger outer diameter in the reducing insert, and a notch is arranged on the end of the second step close to the first groove body where the blade is located, and the circumferential trajectory of the second step coincides with the circumferential trajectory of the first step outside the notch.

[0013] Furthermore, the second step is provided with a second groove body which is symmetrically located with respect to the notch in the circumferential direction of the second step.

[0014] Furthermore, at least one protrusion is circumferentially provided on the outer wall of the variable diameter insert, and a groove for cooperating with the protrusion is circumferentially provided on the first step.

[0015] Furthermore, a first groove body within the circumference of the first step is symmetrically positioned with the first matching groove.

[0016] Furthermore, a matching hole is provided on the partition surface at the center of the shell in the axial direction, and the matching hole is connected with a transmission shaft extending outside the shell in a through-fitting form. The transmission shaft is provided with a convex ring located outside the matching hole, and the transmission shaft passes through the end on the other side of the matching hole to be provided with a threaded section, and the threaded section is matched with a first nut.

[0017] Furthermore, the shell is provided with a chip removal opening located outside the first matching groove, and the chip removal opening is communicated with the first matching groove.

[0018] Furthermore, the blade is fixed in the first matching groove by a screw, and the screw passes through the blade and the housing in sequence from the first matching groove, and is matched with a second nut at the portion passing through the outside of the housing.

[0019] Furthermore, the shell is provided with a second matching groove located outside the first matching groove, the second nut is located in the second matching groove, and the cross-sectional shape of the second matching groove is the same as the cross-sectional shape of the nut.

[0020] The beneficial effects of the utility model are:

[0021] 1) The shell of the chamfering tool is cylindrical. During use, the overall rotation amplitude of the chamfering tool is small, which is convenient for chamfering in narrow spaces and existing pipelines.

[0022] 2) The shell is provided with first steps of different diameters, which can provide space for inserting pipes of different diameters into the shell and meet the chamfering positioning needs of pipes of different diameters, so that the chamferer can adapt to the chamfering operation of pipes of different diameters, with highly integrated functions and compact structure.

[0023] 3) The shell is not a closed cylinder, but a cylinder with an opening; the inner diameter of each section of the shell is slightly smaller than the outer diameter of the corresponding pipe. Based on the above structural design, the shell uses the elasticity of its own material to form a pre-pressure on the inserted pipe, so that the pipe is always close to the blade, ensuring a stable chamfering effect. At the same time, the chamferer will not easily fall off the pipe, which is convenient for on-site chamfering operations.

[0024] 4) The parts are easy to assemble. The blade is a wearing part. For pipes of different diameters with different chamfering edges, when the cutting edge corresponding to a certain diameter is damaged, it can be replaced and used for pipes of other diameters to continue chamfering.

[0025] 5) The chamfering device is provided with a first groove body symmetrical to the position of the blade on the first step, so as to form a avoidance for the protruding end of the inserted pipe, thereby ensuring the uniform chamfering effect of the blade to the greatest extent. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The structure of the chamfering machine is shown in FIG. Figure 1 .

[0027] Figure 2 The structure of the chamfering machine is shown in FIG. Figure 2 .

[0028] Figure 3 The structure of the chamfering machine is shown in FIG. Figure 3 .

[0029] Figure 4 Schematic diagram of the structure when the chamfering tool is equipped with a reducing insert Figure 1 .

[0030] Figure 5 Schematic diagram of the structure when the chamfering tool is equipped with a reducing insert Figure 2 .

[0031] Figure 6 Schematic diagram of the structure when the chamfering tool is equipped with a reducing insert Figure 3 .

[0032] Figure 7 The structure diagram of the variable diameter insert Figure 1 .

[0033] Figure 8 The structure diagram of the variable diameter insert Figure 2 .

[0034] Fig. 9 Schematic diagram of the groove structure.

[0035] Fig.10 This is a schematic diagram of the structure after the chamferer is installed into the transmission shaft.

[0036] Fig.11 This is a schematic diagram of the structure of the chip removal port.

[0037] Fig.12 This is a schematic diagram of the structure in which the blade is fixed in the first slot body by screws.

[0038] Fig.13 It is a schematic diagram of the structure when the second nut is matched in the second matching groove.

[0039] In the figure, 1, shell; 2, opening; 3, first step; 4, first slot; 5, blade; 6, first matching groove; 7, reducing insert; 8, second step; 9, notch; 10, second slot; 11, protrusion; 12, groove; 13, matching hole; 14, transmission shaft; 15, convex ring; 16, threaded section; 17, first nut; 18, chip removal port; 19, screw; 20, second nut; 21, second matching groove. DETAILED DESCRIPTION

[0040] The utility model discloses a simple chamfering device for chamfering multiple pipe diameters, such as Figures 1 to 3 Combined with the following, including:

[0041] The shell 1 is in the shape of a non-closed cylinder, and the side wall of the shell 1 is provided with an opening 2 to form a non-closed structure;

[0042] A first step 3 is provided on the inner wall of the housing 1, and the number of the first step 3 is at least one;

[0043] A first groove body 4 is arranged on the radial inner wall of the housing 1 and located on the outer side of the first step 3 in the circumferential direction, and the number of the first groove body 4 is at least one;

[0044] The blade 5 is arranged in a first matching groove 6 in the housing 1, and the first matching groove 6 is located within the circumference of the first step 3;

[0045] Among them, when the number of the first steps 3 is greater than one, the first steps 3 are all located at one end of the shell 1 in the axial direction or at both ends of the shell 1 in the axial direction, and the first steps 3 are arranged along the direction from the axial port of the shell 1 to the center of the shell 1. The diameters of all the first steps 3 in the direction from the axial port of the shell 1 to the center of the shell 1 decrease successively, and a first groove body 4 within the circumference of the first step 3 is symmetrically positioned with the first matching groove 6.

[0046] It should be noted that: when chamfering the pipe, the pipe is inserted into the shell 1 along the position of the port and the first step 3. After the pipe is inserted into the shell 1, the pipe fits in the space inside the first step 3 corresponding to its diameter, and is restricted from further movement by the end face of another first step 3 with a smaller diameter. Moreover, the surface of the pipe port is against the cutting part of the blade 5 outside the first step 3 where the pipe is located. Then, the pipe is rotated, and the cutting part of the blade 5 performs tangential cutting on the pipe port, thereby chamfering the pipe port.

[0047] In addition, when cutting the pipe, the pipe end often appears crooked, which can easily lead to uneven chamfering effect. The protruding end is often chamfered more, while the non-protruding end is chamfered less or even not cut, which seriously affects the chamfering effect. Usually, the most unfavorable situation for chamfering is when the most protruding part of the pipe end is turned to the radially symmetrical position of the blade 5. Because the protruding end part of the pipe is against the stop step, the non-protruding end of the pipe that is turning to the direction of the blade 5 is relatively far away from the blade 5, and is rarely cut by the blade 5, or even not cut. The chamferer is provided with a first slot 4 on the first step 3, which is symmetrical to the blade 5, to form a avoidance for the protruding end of the inserted pipe, thereby ensuring the uniform chamfering effect of the blade 5 to the greatest extent.

[0048] The shell 1 of the chamfering tool is cylindrical. During use, the overall rotation amplitude of the chamfering tool is small, which is convenient for chamfering in a narrow space. The shell 1 is provided with a first step 3 of different diameters, so that the inner diameter of each section of the inner cavity of the shell 1 is slightly smaller than the outer diameter of the corresponding pipe, which can provide space for pipes of different diameters to be inserted into the shell 1, and can meet the chamfering positioning needs of pipes of different diameters, so that the chamfering tool can adapt to the chamfering operation of pipes of different diameters, with highly integrated functions, exquisite and compact structure, and simple assembly of parts. The shell 1 is not a closed cylinder, but an opening 2 is provided on the cylinder. Based on the above structural design, the shell 1 uses the elastic force of its own material to form a pre-pressure on the inserted pipe, so that the pipe is always close to the blade 5, ensuring a stable chamfering effect. At the same time, the chamfering tool will not easily fall off the pipe, which is convenient for on-site chamfering operations. Moreover, the blade 5 is a wearable part. For pipes of different diameters with different chamfering edge use positions, when the edge corresponding to a certain diameter is damaged, it can also be replaced and used for pipes of other diameters to continue chamfering.

[0049] As one of the embodiments of the present utility model, Figures 4 to 7 As shown in the combination, it also includes a reducing insert 7, which is fitted on the inner sides of two adjacent first steps 3 in the axial direction of the shell 1. A second step 8 is eccentrically arranged inside the end with a larger outer diameter in the reducing insert 7. A notch 9 is arranged at one end of the second step 8 close to the first matching groove 6, and the circumferential trajectory of the second step 8 coincides with the circumferential trajectory of the first step 3 outside the notch 9.

[0050] Among them, different reducing inserts 7 can be embedded in the space inside the shell 1, and the second step 8 in the reducing insert 7 can cooperate with the pipe corresponding to its diameter, which is easy to embed and remove. After the pipe is inserted and passed through the inner side of the second step 8, the circumferential trajectory of the second step 8 coincides with the circumferential trajectory of the first step 3 outside the notch 9, so the surface of the pipe port is against the cutting part of the blade 5, and then the pipe is rotated, and the cutting part of the blade 5 performs tangential cutting on the pipe port, thereby realizing the chamfering of the pipe port. By replacing different reducing inserts 7, the chamfering of pipes with smaller diameters can be quickly realized, which greatly broadens the pipe diameter range adapted to the chamfering.

[0051] Further preference of this embodiment is as follows Figure 7 As shown, the second step 8 is provided with a second groove body 10 which is symmetrical with the notch 9 in the circumferential direction of the second step 8 .

[0052] Among them, similar to the previous embodiment, a first groove body 4 symmetrical to the position of the blade 5 is set on the second step 8 in the reducer insert 7 to form a avoidance for the protruding end of the inserted pipe, thereby ensuring the uniform chamfering effect of the blade 5 to the greatest extent.

[0053] Further preference of this embodiment is as follows Figure 8 and Fig. 9 As shown in the figure, at least one protrusion 11 is circumferentially provided on the outer wall of the reducing insert 7 , and a groove 12 for cooperating with the protrusion 11 is circumferentially provided on the first step 3 .

[0054] Among them, the cooperation between the protrusion 11 and the groove 12 can fix the reducing insert 7 in the space of the shell 1 where the first step 3 is located, and when the pipe is rotated, the cooperation between the protrusion 11 and the groove 12 can limit the reducing insert 7 to prevent the reducing insert 7 from rotating when the pipe is rotated and affecting the chamfering processing of the pipe port.

[0055] As one of the embodiments of the present utility model, Fig.10 As shown, a matching hole 13 is provided on the partition surface at the center of the shell 1 in the axial direction, and the matching hole 13 is connected with a transmission shaft 14 extending to the outside of the shell 1 in a through-fitting form. The transmission shaft 14 is provided with a convex ring 15 located outside the matching hole 13, and the transmission shaft 14 passes through the end on the other side of the matching hole 13 to be provided with a threaded section 16, and the threaded section 16 is matched with a first nut 17.

[0056] Among them, a matching hole 13 for the transmission shaft 14 is reserved at the partition surface of the shell 1, which is convenient for fixing the transmission shaft 14 with a fixing nut, so that it can be matched with electric tools such as an electric screwdriver to achieve electric chamfering.

[0057] As one of the embodiments of the present utility model, Fig.11As shown, the housing 1 is provided with a chip removal opening 18 located outside the first matching groove 6 , and the chip removal opening 18 is communicated with the first matching groove 6 .

[0058] The discharge port can facilitate the discharge of the debris generated by the blade 5 cutting the pipe port from the first matching groove 6, thereby preventing the debris from affecting the effect of the blade 5 cutting the pipe port.

[0059] As one of the embodiments of the present utility model, Fig.12 As shown, the blade 5 is fixed in the first matching groove 6 by a screw 19 , and the screw 19 passes through the blade 5 and the housing 1 in sequence from the first matching groove 6 , and is matched with a second nut 20 at the portion passing through the outside of the housing 1 .

[0060] Among them, the blade 5 fixed by the screw 19 and the second nut 20 can be removed outside the first matching groove 6. When the cutting edge of the blade 5 corresponding to a certain pipe diameter is damaged, the end of the blade 5 with an intact cutting edge can be replaced to the position of the first matching groove 6 corresponding to other pipe diameters through the detachable structure, so that the same blade 5 can continue to be used in the chamfering processing of the pipe, thereby increasing the utilization rate of the blade 5 and saving the use cost.

[0061] As one of the embodiments of the present utility model, Fig.13 As shown, the housing 1 is provided with a second matching groove 21 located outside the first matching groove 6, the second nut 20 is located in the second matching groove 21, and the cross-sectional shape of the second matching groove 21 is the same as the cross-sectional shape of the nut.

[0062] Among them, after the second nut 20 is placed in the second matching groove 21, the second nut 20 can be limited by the second matching groove 21. When fixing the blade 5 to the first matching groove 6, the position of the blade 5 can be locked by twisting the screw 19, which is simple and convenient to operate.

[0063] 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 simple chamfering device for chamfering multiple pipe diameters, characterized in that: include: The shell is in the shape of a non-closed cylinder, and the side wall of the shell is provided with an opening to form a non-closed structure; A first step is provided on the inner wall of the housing, and the number of the first step is at least one; A first groove body is arranged on the radial inner wall of the housing and is located on the outer side of the first step in the circumferential direction, and the number of the first groove body is at least one; a blade, disposed in a first matching groove in the housing, wherein the first matching groove is located within the circumference of the first step; Among them, when the number of the first steps is greater than one, the first steps are all located at one end of the shell in the axial direction or at both ends of the shell in the axial direction, and the first steps are arranged along the direction from the axial port of the shell to the center of the shell, and the diameters of all the first steps in the direction from the axial port of the shell to the center of the shell decrease successively, and a first groove body within the circumference of the first step is symmetrically positioned with the first matching groove.

2. A simple chamfering device for chamfering multiple pipe diameters according to claim 1, characterized in that: It also includes a reducing insert, which is fitted on the inner sides of two adjacent first steps in the axial direction of the shell, and a second step is eccentrically arranged on the inner side of the end with a larger outer diameter of the reducing insert, and a notch is arranged on the end of the second step close to the first matching groove, and the circumferential trajectory of the second step coincides with the circumferential trajectory of the first step outside the notch.

3. The simple chamfering device for chamfering multiple pipe diameters according to claim 2, characterized in that: The second step is provided with a second groove body which is symmetrical with the notch in the circumferential direction of the second step.

4. The simple chamfering device for chamfering multiple pipe diameters according to claim 2, characterized in that: At least one protrusion is circumferentially provided on the outer wall of the reducing insert, and a groove for cooperating with the protrusion is circumferentially provided on the first step.

5. The simple chamfering device for chamfering multiple pipe diameters according to claim 1, characterized in that: A matching hole is provided on the partition surface at the center of the shell in the axial direction, and the matching hole is connected with a transmission shaft extending outside the shell in a through-fitting form. The transmission shaft is provided with a convex ring located outside the matching hole, and the transmission shaft passes through the end on the other side of the matching hole to be provided with a threaded section, and the threaded section is matched with a first nut.

6. The simple chamfering device for chamfering multiple pipe diameters according to claim 1, characterized in that: The shell is provided with a chip removal opening located outside the first matching groove, and the chip removal opening is communicated with the first matching groove.

7. The simple chamfering device for chamfering multiple pipe diameters according to claim 1, characterized in that: The blade is fixed in the first matching groove by a screw. The screw passes through the blade and the housing in sequence from the first matching groove, and is matched with a second nut at a portion passing through the housing.

8. The simple chamfering device for chamfering multiple pipe diameters according to claim 7, characterized in that: The housing is provided with a second matching groove located outside the first matching groove, the second nut is located in the second matching groove, and the cross-sectional shape of the second matching groove is the same as the cross-sectional shape of the nut.

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