Internal expansion type beveling machine

Abstract

The utility model discloses an internal expansion type beveling machine, which belongs to the technical field of beveling machine equipment, and comprises a power mechanism, the power mechanism is connected with a transmission mechanism, the transmission mechanism is fixedly connected with a beveling mechanism, a tensioning mechanism penetrates through the middle part of the transmission mechanism, the tensioning mechanism comprises a central shaft, and the central shaft is fixedly connected with the transmission mechanism. The central shaft is fixedly connected with the feeding screw rod, and the central shaft is fixedly connected with the sliding sleeve through a modified flat key. The internal expanding type beveling machine is simple in structure and easy to operate, the rotating force brought by the driven gear is changed into a flat key formed by matching the sliding sleeve and the center shaft to bear, the center shaft in the expanding mechanism only needs to bear axial movement, and the rotating force is greatly reduced. And the dry oil-free bushing is arranged between the sliding sleeve and the central shaft, so that the sliding wear is reduced, and the service life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of beveling machine equipment, in particular to an internal expansion type beveling machine. Background Art

[0002] There are many types of beveling machines, the most common of which are pipe end beveling machines. The existing internal expansion type pipe beveling machines include an internal expansion mechanism, a beveling knife holder, a motor, a rotating shaft and a manual feeding mechanism. Since the end face of the pipe needs to be cut, the beveling machine needs to be positioned on the pipe first. Generally, an internal expansion mechanism is used to tighten it on the inner wall of the pipe. The motor drives the rotating shaft to rotate, and the rotating shaft is linked to the beveling knife holder. The motor can drive the tool on the beveling knife holder to perform beveling operations, and the manual feeding mechanism can drive the beveling knife holder to perform feeding operations. The central axis of the tensioning mechanism not only has to bear the rotational force brought by the rotating shaft but also has to bear the axial force of manual feeding. The service life is not long and it is easy to be damaged. Summary of the invention

[0003] The purpose of the utility model is to provide an internal expansion beveling machine with a simple structure and easy operation. The rotational force brought by the driven gear is converted into a modified flat key borne by the sliding sleeve and the center shaft that cooperate with each other, so that the center shaft in the tensioning mechanism only needs to bear axial movement, and a dry oil-free bushing is arranged between the sliding sleeve and the center shaft to reduce sliding wear and increase service life.

[0004] To achieve the above-mentioned purpose, the utility model provides an internal expansion type beveling machine, including a power mechanism, the power mechanism is connected to a transmission mechanism, the transmission mechanism is fixedly connected to the beveling mechanism, a tensioning mechanism runs through the middle of the transmission mechanism, the tensioning mechanism includes a center shaft, the center shaft is fixedly connected to the feed screw, and the center shaft is connected to the sleeve by a modified flat key.

[0005] Preferably, a first pull rod is provided inside the feed screw, the first pull rod is rotatably connected to the second pull rod, one end of the first pull rod is connected to a nut, the second pull rod is connected to the tensioning assembly, and a dry oil-free bushing is sleeved on the outer side of the central shaft.

[0006] Preferably, the transmission mechanism includes a driving gear, the driving gear meshes with a driven gear, the driving gear is connected to the power mechanism via a spline, the driving gear and the driven gear are both placed inside a lower shell, and the lower shell is connected to an upper shell via screws.

[0007] Preferably, the tensioning mechanism is inserted into the sliding sleeve and the cutter disc, the central axis passes through the middle of the driven gear, the driven gear and the cutter disc are fixedly connected by screws and internal threaded cylindrical pins, and a beveling cutter is fixed on the cutter disc.

[0008] Preferably, the sliding sleeve is connected to the lower shell and the upper shell through a slotted round nut with a locking groove and a flat key.

[0009] Preferably, the sliding sleeve is provided with a groove, the flat key is fixedly connected to the groove of the sliding sleeve by a screw, and the central shaft is provided with a groove matching with the flat key.

[0010] Preferably, the feed screw is connected to the feed handwheel via a thread, one end of the feed handwheel is sleeved on an upper end cover, and the upper end cover is fixedly connected to one end of a sliding sleeve via a screw.

[0011] Preferably, the feed handwheel is fixedly connected to the ratchet wrench via a thread and a hexagon socket fastening screw.

[0012] Preferably, the dry oil-free bushing is sleeved at a designated position of the sliding sleeve.

[0013] Therefore, the utility model adopts the above-mentioned internal expansion type beveling machine (technical effect).

[0014] The technical solution of the utility model is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a front view of an embodiment of an internal expansion type beveling machine of the utility model;

[0016] Figure 2 It is a cross-sectional view of an embodiment of an internal expansion type beveling machine of the utility model.

[0017] Reference numerals

[0018] 1. Power mechanism; 2. Driving gear; 3. Driven gear; 4. Sliding sleeve; 5. Upper end cover; 6. Flat key; 7. Feed handwheel; 8. Upper shell; 9. Lower shell; 10. Cutter disc; 11. Ratchet wrench; 12. Tensioning mechanism; 121. Feed screw; 122. Center shaft. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described below through the accompanying drawings and embodiments.

[0020] Unless otherwise defined, the technical terms or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0021] Embodiment 1

[0022] like Figure 1 to Figure 2 As shown, the utility model provides an internal expansion type beveling machine, including a power mechanism 1, the power mechanism 1 is used to provide power, the power mechanism 1 is connected to a transmission mechanism, the transmission mechanism is used to transmit power to the beveling mechanism, the transmission mechanism is fixedly connected to the beveling mechanism, and the beveling mechanism is used to perform beveling operations on the pipe mouth. A tensioning mechanism 12 runs through the middle of the transmission mechanism, and the tensioning mechanism 12 is used to connect the beveling machine to the pipe.

[0023] The tensioning mechanism 12 includes a central shaft 122, which is the reference for transmission and feeding actions. The central shaft 122 is fixedly connected to the feed screw 121, which is used to control the advance and retreat of the cutter head 10 to adjust the cutting depth. The feed screw 121 is connected to the feed handwheel 7 by a thread, and the feed handwheel 7 is used to drive the structure other than the tensioning mechanism 12 to move axially to achieve feeding. One end of the feed handwheel 7 is sleeved on the upper end cover 5, and the upper end cover 5 is fixedly connected to one end of the sliding sleeve 4 by a screw, and the upper end cover 5 is used to protect the internal mechanical structure. The feed handwheel 7 is fixedly connected to the ratchet wrench 11 by a thread and a hexagon socket fastening screw, and the ratchet wrench 11 is used to drive the feed handwheel 7 to rotate. An upper end cover 5 is provided below the ratchet wrench 11, and a bearing is provided between the upper end cover 5 and the feed handwheel 7.

[0024] The central shaft 122 is connected to the sleeve 4 through a modified flat key 6. A groove matching the flat key 6 is provided on the central shaft 122. The flat key 6 can ensure the synchronous movement of the two components. The modified flat key 6 connects the central shaft 122 to the sleeve 4 so that the sleeve 4 and the upper shell 8 and the lower shell 9 can overcome the rotational force brought by the driving gear 2 and the driven gear 3. The sleeve 4 is connected to the lower shell 9 and the upper shell 8 through a slotted round nut with a locking groove and the flat key 6. The sleeve 4 is provided with a groove, and the flat key 6 is fixedly connected to the groove of the sleeve 4 through a screw.

[0025] A first pull rod is provided inside the feed screw 121, and the first pull rod is rotatably connected to the second pull rod. A nut is connected to one end of the first pull rod, and the second pull rod is connected to the tensioning assembly. A dry oil-free bushing is provided on the outer side of the center shaft 122, and the dry oil-free bushing is provided at a designated position of the sliding sleeve 4. The dry oil-free bushing can reduce friction and wear, thereby improving work efficiency.

[0026] The transmission mechanism includes a driving gear 2, which meshes with a driven gear 3. The driving gear 2 is connected to the power mechanism 1 through a spline. The driving gear 2 is used to receive the rotational power output by the power mechanism 1, and the driven gear 3 is used to receive the power transmitted by the driving gear 2. The driving gear 2 and the driven gear 3 are both placed inside the lower shell 9, and the lower shell 9 is connected to the upper shell 8 through screws. The upper shell 8 and the lower shell 9 are used to protect and support the internal mechanical structure.

[0027] The tensioning mechanism 12 is inserted into the sliding sleeve 4 and the cutter head 10. A central shaft 122 runs through the middle of the driven gear 3. The driven gear 3 is fixedly connected to the cutter head 10 by screws and internal thread cylindrical pins. The cutter head 10 is used to install cutting tools and is responsible for actual groove processing. The cutter head 10 forms an incision on the pipeline through rotation and feeding. A groove cutter is fixed on the cutter head 10, and the groove cutter is used to perform groove operations on the pipeline.

[0028] When the internal expansion beveling machine provided by the utility model is used, the tensioning mechanism 12 is first tightened in the pipeline, and then the power mechanism 1 is started, the power mechanism 1 drives the driving gear 2 to rotate, the driving gear 2 drives the driven gear 3 to rotate, and the driven gear 3 drives the cutter disc 10 to rotate. Then the ratchet wrench 11 is rotated, the ratchet wrench 11 drives the feed hand wheel 7 to rotate, the feed hand wheel 7 rotates on the feed screw 121 and moves toward the pipeline, thereby driving the sliding sleeve 4 to move, the sliding sleeve 4 drives the beveling mechanism and the power mechanism 1 to move toward the pipeline until they contact the pipeline mouth, and the beveling cutter performs a beveling operation on the pipeline mouth. After the beveling is completed, the above steps are reversed to remove the beveling machine from the pipeline.

[0029] Therefore, the utility model adopts the above-mentioned internal expansion beveling machine, which has a simple structure and is easy to operate. By converting the rotational force brought by the driven gear into a modified flat key that cooperates with the sliding sleeve and the center shaft, the center shaft in the tensioning mechanism only needs to bear axial movement, and a dry oil-free bushing is arranged between the sliding sleeve and the center shaft to reduce sliding wear and increase service life.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that they can still modify or replace the technical solution of the utility model with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the utility model.

Claims

1. An internal expansion beveling machine, characterized in that: It includes a power mechanism, which is connected to a transmission mechanism, which is fixedly connected to a groove mechanism, a tensioning mechanism passes through the middle of the transmission mechanism, and the tensioning mechanism includes a center shaft, which is fixedly connected to a feed screw, and the center shaft is connected to a sleeve through a modified flat key.

2. The internal expansion groove machine according to claim 1, characterized in that: A first pull rod is provided inside the feed screw, the first pull rod is rotatably connected to the second pull rod, one end of the first pull rod is connected to a nut, the second pull rod is connected to a tensioning assembly, and a dry oil-free bushing is sleeved on the outer side of the central shaft.

3. The internal expansion groove machine according to claim 1, characterized in that: The transmission mechanism comprises a driving gear meshing with a driven gear, the driving gear is connected to the power mechanism via a spline, the driving gear and the driven gear are both placed inside a lower housing, and the lower housing is connected to an upper housing via screws.

4. The internal expansion groove machine according to claim 3, characterized in that: The tensioning mechanism is inserted into the sliding sleeve and the cutter disc, the central shaft passes through the middle of the driven gear, the driven gear is fixedly connected to the cutter disc by screws and internal thread cylindrical pins, and a beveling cutter is fixed on the cutter disc.

5. The internal expansion groove machine according to claim 1, characterized in that: The sliding sleeve is connected with the lower shell and the upper shell through a slotted round nut with a locking groove and a flat key.

6. The internal expansion type groove machine according to claim 1, characterized in that: The sliding sleeve is provided with a groove, the flat key is fixedly connected to the groove of the sliding sleeve by a screw, and the central shaft is provided with a groove matching with the flat key.

7. The internal expansion groove machine according to claim 1, characterized in that: The feed screw is connected to the feed hand wheel through threads, one end of the feed hand wheel is sleeved on the upper end cover, and the upper end cover is fixedly connected to one end of the sliding sleeve through screws.

8. The internal expansion type groove machine according to claim 7, characterized in that: The feed hand wheel is fixedly connected to the ratchet wrench through a thread and a hexagon socket fastening screw.

9. The internal expansion type groove machine according to claim 2, characterized in that: The dry oil-free bushing is sleeved on a designated position of the sliding sleeve.

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