Universal portable cutting type pipe external chamfering machine

Abstract

The utility model provides a kind of general portable cutting type pipe outer chamfering machine, including tool rest, tool, protective cover, transmission shaft, fastener, five component centers are on the same axis.The tool rest is disc-shaped, with shaft hole in the center, with multiple tools in it, and pipe positioning ring corresponding to tool.The transmission shaft is through the center of tool rest and protective cover, and is fixedly connected with tool rest.According to the general portable cutting type pipe outer chamfering machine of the utility model embodiment, various standard pipes can be chamfered outside by hand drill, and the quality of chamfered product is guaranteed to be high quality and stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of machining, in particular to a general portable cutting type pipe external chamfering machine. BACKGROUND

[0002] Pipes are widely used in water supply, drainage, heating, gas supply, long-distance transportation of oil and natural gas, agricultural irrigation, hydraulic engineering and various industrial devices. During pipe installation, it is sometimes necessary to insert a rubber ring structure, such as a pp super-silent pipe system for building drainage, which is difficult to insert. In order to facilitate installation, avoid damaging the rubber ring, and ensure sealing effect, the end face of the pipe needs to be chamfered and coated with lubricating oil.

[0003] During construction, an angle grinder is generally used for manual chamfering, or large equipment is used for centralized chamfering of pipes. Manual chamfering has the disadvantages of uneven chamfering, low efficiency, and inability to guarantee the effect; centralized pipe chamfering has the disadvantages of inconvenient operation, poor mobility, and inability to chamfer according to requirements.

[0004] Patent No. CN212763685U discloses a multi-size portable round pipe chamfering device, which is characterized by being composed of multiple groups of the same structure in series, with different sizes of the same structure arranged in a ladder shape and connected through a sleeve joint. By rotating the adjusting screw, the adjusting screw drives the cutter to rotate through the connecting rod, thereby achieving different size chamfering of the round pipe. However, when chamfering small-diameter pipes, the driving end is far away from the fixed end, the pipe shakes unstably during processing, and the long strip design occupies a large space, which is not conducive to carrying. SUMMARY

[0005] The present application aims to provide a general portable cutting type pipe external chamfering machine that can chamfer at any time during construction, improve efficiency, guarantee the effect of chamfering to meet standards, and facilitate construction personnel to carry the tool package together.

[0006] The general portable cutting type pipe external chamfering machine disclosed by the present application comprises a tool holder, the tool holder is disc-shaped, has a tool holder bottom plate and multiple pipe positioning rings on the top, and has an axle hole at the center; a cutter, the cutter is installed on the tool holder and fixed with the tool holder through fasteners; a transmission shaft, the transmission shaft is fixed with the tool holder through a protective cover; the centers of the tool holder, the cutter, and the protective cover are on the same axis of the transmission shaft. The cutter is fixed on the tool holder through fasteners, and the tool holder is located between the tool holder and the protective piece. The transmission shaft penetrates the centers of the tool holder and the protective cover, is fixedly connected with the tool holder, and does not directly contact the protective cover. The tool holder can be powered by a hand drill to chamfer various standard pipes, while ensuring that the chamfered products are of high quality and stable.

[0007] As preferred, the tool holder bottom has an outer nesting protective cover, the protective cover is an open barrel shape, covering the tool holder, and the top surface has a chip removal hole corresponding to the tool. The protective cover prevents the tool and chips from hurting people, and the chip removal hole optimizes the operation process, without opening the cover for cleaning during continuous chamfering.

[0008] As preferred, the tube positioning ring, all tube positioning ring bottom ends are located at the same height surface, and are perpendicular to the tool holder bottom plate. To ensure that the contact angle of the tool and the pipe is fixed, the cutting efficiency is high, and the chamfering result is stable.

[0009] As preferred, the tool holder bottom plate has two circumferential local notches at the connection part with the tube positioning ring. The notches and the tube positioning ring together form a constraint positioning device for the pipe, and at the same time, space is left out for adjusting the tool.

[0010] As preferred, the tool and the tube positioning ring are along the same circumference, and the tool edge is flush with the straight edge of the local notch.

[0011] As preferred, the local notch has a tool fixing surface, and the local notch has a groove depth not higher than the tool plane, and the general depth is 2 / 3 of the tool holder.

[0012] As preferred, the tool fixing surface is perpendicular to the tool holder bottom plate, and the tool fixing surface is centrally symmetric as a wall surface of the local notch, and at the intersection part of the tool holder bottom plate and the tube positioning ring, the tool fixing structure and the tool fixing screw hole are respectively provided.

[0013] As preferred, the protective cover is matched and attached with the tool holder bottom plate and the tube positioning ring after being assembled with the tool holder. The protective cover prevents the protective cover from affecting the chamfering effect during the operation process.

[0014] As preferred, the transmission shaft has a locking structure with a thread and a pin key structure matched with the shaft hole, and the transmission shaft is fixed on the tool holder through a fastener. The transmission shaft can be directly inserted into a hand drill for fixation, and the hand drill can be used as a power source to process the pipe at any construction site environment at any time.

[0015] The universal portable cutting type pipe outer chamfering machine provided by the application has a flat disc shape and can be carried with a tool bag. The finished product is stable during chamfering. The power source can be directly used with a hand drill, and can be used directly on site at any construction site environment. For different outer diameters of pipes, a plurality of pipe diameter tube positioning rings and corresponding tools are provided, and several commonly used pipes can be chamfered. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a schematic diagram of a universal portable cutting type pipe outer chamfering machine according to an embodiment of the application.

[0017] Figure 2It is the cross sectional view of the universal portable cutting type pipe external chamfering machine of one embodiment of the present application.

[0018] Figure 3 It is the longitudinal sectional view of the universal portable cutting type pipe external chamfering machine of one embodiment of the present application.

[0019] Figure 4 It is the enlarged view of the tool holder part of the universal portable cutting type pipe external chamfering machine of one embodiment of the present application.

[0020] Figure 5 It is the enlarged view of the cutting face part of the universal portable cutting type pipe external chamfering machine of one embodiment of the present application.

[0021] Reference signs:

[0022] Tool holder 1, tool 2, protective cover 3, transmission shaft 4, fastener 5, 50 pipe positioning ring 11, 75 pipe positioning ring 12, 110 pipe positioning ring 13, tool holder bottom plate 14, partial notch 15, tool fixing surface 16, tool fixing structure 17, tool fixing screw hole 18, shaft hole 19, barrel wall 31, barrel bottom 32, chip removal hole 33, locking structure 41. DETAILED DESCRIPTION

[0023] The embodiments of the present application are described below in detail, and examples of the embodiments are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0024] As Figures 1 to 3 , the universal portable cutting type pipe external chamfering machine according to one embodiment of the present application comprises a tool holder 1, a tool 2, a protective cover 3, a transmission shaft 4, a fastener 5, and five functional parts, wherein the tool holder 1, the tool 2, the protective cover 3, the transmission shaft 4, and the fastener 5 are centered on the same axis, the tool holder 1 is generally disc-shaped and has three pipe external diameter positioning rings located on the same height plane, the tool holder 1 has six tools 2 symmetrically distributed, the protective cover has a chip removal hole, and the tool 2 is located inside the protective cover 3. The tool holder 1 and the protective cover 3 jointly form the shell part of the universal portable cutting type pipe external chamfering machine, the tool 2 and the fastener 5 are located in the universal portable cutting type pipe external chamfering machine, and the tool 2 is fixed on the tool holder 1 through the fastener 5.

[0025] The embodiments of the present application integrate multiple specification chamfering machines into a single universal portable cutting type pipe external chamfering machine, and simultaneously optimize the structure by changing the cylinder nesting of the prior art into ring nesting, thereby saving more space and facilitating carrying.

[0026] As Figures 2 to 3, Specifically, the tool holder 1 is disc-shaped, has a shaft hole 19 in the center, and has three pipe positioning rings, namely a 50 pipe positioning ring 11, a 75 pipe positioning ring 12, and a 110 pipe positioning ring 13, which are matched with the outer diameters of 50, 75, and 110 pipes, respectively, and the inner diameters of the positioning rings are in the ranges of 50-51, 75-76, and 110-111, respectively; the bottom ends of the 50 pipe positioning ring 11, the 75 pipe positioning ring 12, and the 110 pipe positioning ring 13 are located on the same height plane and are vertically and integrally connected with the tool holder bottom plate 14; the tool holder bottom plate 14 has two circumferential local notches 15 at the connection parts with the positioning rings, the local notches 15 cover the three positioning rings, and the depth is not greater than 2 / 3 of the height of the positioning ring, so that the positioning ring has a complete circular opening to ensure the strength and positioning function of the positioning ring. The local notches 15 have tool fixing surfaces 16, the tool fixing surfaces 16 are perpendicular to the tool holder bottom plate 14, and the two tool fixing surfaces form local notches 16 as wall surfaces, which face the same direction and are clockwise or counterclockwise. The tool fixing surfaces 16 have tool fixing structures 17 and tool fixing screw holes 18 at the intersection parts of the tool holder bottom plate 14 and the 50 pipe positioning ring 11, the 75 pipe positioning ring 12, and the 110 pipe positioning ring 13, respectively, which are used for positioning the inclination angle of the tool and fixing the tool 2. The tool 2 is a standard general part, which can be purchased by the user for convenient replacement and has a cost advantage. The protective cover 3 is in the shape of an open barrel, has a barrel wall 31 and a barrel bottom 32, and is matched and attached with the tool holder 1 after assembly, is attached to the tool holder bottom plate 14 and the 110 pipe positioning ring 13, is covered outside, covers the local notches 15 and the tool 2 inside, makes the tool holder 1 have a relatively complete cylindrical outer surface, and avoids scratching the operator during high-speed rotation; the barrel wall 31 has a chip removal hole 33 corresponding to the local notch 15 part. The transmission shaft 4 is matched with the shaft hole 19 and has a locking structure 41, which can be in the form of a thread, a pin key, or the like, and is used for locking the transmission shaft 4 and the tool holder 1 to transmit the rotating power to the tool holder 1. The transmission shaft is fixed on the tool holder 1 by a fastener 5.

[0027] As a power source, the transmission shaft 4 is inserted into a commonly used hand drill on the construction site, and the internal tool holder 1 and the tool 2 are rotated by the hand drill. When the target pipe material is hard or the pipe wall is thick, the transmission shaft 4 can also be inserted into a bench drill in the workshop for use.

[0028] The tool 2 is fixed on the tool holder 1 by the fastener 5. In general, the tool 2 and the tool holder 1 are 120 degrees. If necessary, the present embodiment leaves enough space through the local notches 15, and the tool 2 can be replaced and adjusted at the work site with simple tools.

[0029] As Figures 4 to 5As a multi-diameter processing combination, the universal portable cutting type pipe outer chamfering machine of the embodiment of the application comprises 50 pipe positioning rings 11, 75 pipe positioning rings 12 and 110 pipe positioning rings 13 of three pipe diameter specifications. The cutting blades of the three specifications are designed on the same height plane, and a nested structure is adopted to reduce the volume of the chamfering machine. The cutting tool 2 is provided with pipe positioning holes corresponding to the cutting tool, and each pipe diameter chamfering combination maintains a fixed chamfering angle and radius.

[0030] The pipe for building drainage has different wall thicknesses of different materials, such as PVC, pp super-silence, PE pipe and the like, and the outer diameters are fixed values, and there is a wall thickness deviation problem in the circumferential direction in the production and processing process, so that the pipe inner diameter deviation is large, and the embodiment of the application positions by the outer diameter to ensure the uniformity of the chamfering in the circumferential direction.

[0031] During operation, first, the components are assembled and checked for stable cooperation, then the transmission shaft 4 is connected with the power source. After trial rotation, the pipe to be chamfered is inserted into the corresponding pipe positioning hole. After the hand drill or other power source is turned on, only the pipe is slowly pushed until the pipe contacts the bottom of the tool holder 1, and the chamfering operation is completed. During the cutting process, the protective cover 3 effectively blocks the cutting chips from splashing, and after the operation is completed, the cutting chips are discharged through the chip discharge hole 33 of the protective cover 3 to quickly prepare for the next chamfering.

[0032] The embodiment of the application fixes and restricts the angle of the cutting tool 1 and the pipe feeding distance, and after the chamfering of any pipe meeting the outer diameter specification, the chamfering angle and the chamfering radius are standard fixed values. For pipes of different thicknesses, the outer size after chamfering is ensured to be the same by fixing the outer diameter size.

[0033] The universal portable cutting type pipe outer chamfering machine of the embodiment of the application has the beneficial functions of using a hand drill and other commonly used machining tools as a power source, being convenient for direct machining according to the needs on the construction site and the like, the protective cover 3 having positioning and safety functions, the pipe positioning holes with fixed diameters matching the outer diameter of the pipe, the chamfering radius and angle being fixed by directly inserting into the bottom during machining, the cutting chips generated during machining being blocked by the protective cover 3 and remaining in the chamfering machine, effectively preventing the operator from being scratched by the splashing cutting chips, the three pipe positioning holes of the 50 pipe positioning rings 11, the 75 pipe positioning rings 12 and the 110 pipe positioning rings 13 being simultaneously present to perform multi-diameter chamfering, and the defect of unstable operation product quality of the adjustable chamfering structure being avoided.

Claims

1. A universal portable cutting type pipe external chamfering machine, characterized in that it comprises: a cutter holder (1) in the shape of a disc, having a cutter holder bottom plate (14) and a plurality of pipe positioning rings at the top, and having a shaft hole (19) in the center; a cutter (2) mounted on the cutter holder (1); a transmission shaft (4) fixed with the cutter holder (1); the cutter holder (1) and the cutter (2) are centered on the axis of the transmission shaft (4); the pipe positioning rings are located on the same height plane, and each pipe positioning ring is perpendicular to the cutter holder bottom plate; the connection part of the cutter holder bottom plate and the pipe positioning ring has two partial notches in the shape of a sector; the cutter and the pipe positioning ring are along the same circle, the cutter edge is flush with the straight edge of the partial notch, the partial notch has a cutter fixing surface, the slot depth of the partial notch is not higher than the cutter in the plane, the cutter fixing surface is perpendicular to the cutter holder bottom plate, the cutter fixing surface is used as a wall surface to form a center symmetry of the partial notch, and the cutter fixing structure and the cutter fixing screw hole are located at the intersection part of the cutter holder bottom plate and the pipe positioning ring.

2. The universal portable cutting type pipe external chamfering machine according to claim 1, wherein the cutter holder (1) has an externally nested protective cover (3) at the top. The protective cover (3) is in the shape of an open barrel. The protective cover (3) covers the cutter holder (1). The protective cover (3) has a chip removal hole (33) corresponding to the cutter (2) on the top surface. The protective cover (3) is respectively matched and attached to the cutter holder bottom plate (14) and the pipe positioning ring. The transmission shaft (4) is matched with the shaft hole (19), has a locking structure (41) with a thread and a pin key structure, and is fixed on the cutter holder (1) through a fastener.

3. A portable general-purpose pipe external chamfering machine according to claim 2, wherein ​ 4. A portable general-purpose pipe external chamfering machine according to claim 3, wherein ​ 5. A portable general-purpose pipe external chamfering machine according to claim 4, wherein ​ 6. A portable general-purpose pipe external chamfering machine according to claim 2, wherein ​ 7. A portable general-purpose pipe external chamfering machine according to claim 1, wherein ​

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