Punching burr removal tool and punching machine

Abstract

The present application relates to a punching burr removal tool and a punching machine, wherein the punching burr removal tool and the punching machine include a sleeve, and a bayonet installed in the sleeve and capable of extending and retracting relative to the inner and outer ends of the sleeve; the bayonet includes an elastically deformable cutter head, which can be compressed and retracted radially or released and extended relative to the sleeve mouth; a cutting block is provided on the cutter head, and the cutting block includes an inclined blade, and when the cutter head extends out of the sleeve, the burrs on the hole forming part are removed by the rotation of the bayonet. The utility model can effectively and reliably remove the burrs on the hole forming part by the rotation of the bayonet, thereby improving the technical difficulty of effectively removing the burrs on the existing pipe drilling, removing the burrs with the secondary processing structure and form, and ensuring the drilling quality.

Description

Technical Field

[0001] The present application relates to the technical field of drilling equipment, and in particular to a drilling burr removal tool and a drilling machine. Background Art

[0002] In the existing process of punching holes in medical device tubes, a hollow drill bit is generally used to drill holes in the tubes.

[0003] Due to the flexible material of medical device tubes, burrs are easily formed at the hole-forming part during the drilling process, which are difficult to effectively remove and affect the quality of the product.

[0004] Although other materials can be laid under the pipe to reduce burrs, adding a process will affect work efficiency on the one hand, and easily wear the drilling tool on the other hand, reducing the service life of the drilling tool. Utility Model Content

[0005] The purpose of the present application is to provide a drilling burr removal tool and a drilling machine, which can remove burrs with a secondary processing structure and form to ensure the quality of drilling.

[0006] In order to achieve the above-mentioned object, in a first aspect, the utility model provides a punching burr removal tool, comprising a sleeve, and a burr cutter installed in the sleeve and capable of extending inward and outward relative to the sleeve opening;

[0007] The bayonet knife comprises an elastically deformable knife head, and the knife head can be compressed and retracted or released and extended in the radial direction relative to the tube opening of the sleeve;

[0008] The cutter head is provided with a cutting block, and the cutting block includes an inclined blade. When the cutter head extends out of the sleeve, the burrs on the hole forming part are removed by rotating the burr cutter.

[0009] In an optional embodiment, the bayonet includes a knife rod inserted into the sleeve, and the end of the knife rod includes a forked structure, and the forked portion is telescopic relative to the tube opening of the sleeve.

[0010] In an optional embodiment, the cutter head includes a double-sided cutter head, both sides of the bifurcated portion can be elastically deformed, and the cutting blocks are respectively connected to the cutter heads of the two side branches.

[0011] In an optional embodiment, the cutter head comprises a single-sided cutter head, wherein one side branch of the bifurcated portion constitutes a fixed cutter seat, and the other side branch can be elastically deformed to form a cutter head, and the cutting block is connected to the cutter head.

[0012] In an optional embodiment, the knife rod is vertically inserted into the sleeve, and the sleeve and the knife rod are coaxially arranged and clearance-fitted.

[0013] In an optional embodiment, the cutting block includes a cutting seat capable of contacting and cooperating with the pipe mouth, the cutting seat is connected to the side wall of the cutter head, the inclined blade is arranged on the upper and lower sides of the cutting seat, and there is a smooth transition between the side wall of the cutting seat and the inclined blade, and the pipe mouth of the sleeve is provided with an arc chamfer, and the arc chamfer is arranged on the inner side of the pipe mouth.

[0014] In an optional embodiment, the sleeve is clamped and fixed on a sleeve fixture, and the sleeve fixture is connected to a lifting mechanism, and the lifting mechanism can drive the sleeve fixture and the sleeve to move up and down relative to the bayonet.

[0015] In an optional embodiment, the lifting mechanism includes a cylinder, the sleeve clamp is installed on an adapter seat, a piston rod is provided on the cylinder, and a telescopic end of the piston rod is connected to the adapter seat.

[0016] In an optional embodiment, it further includes a rotating motor, the output end of which is connected to a bayonet clamp, the bayonet is clamped and fixed on the bayonet clamp, and the rotating motor can drive the bayonet clamp and the bayonet to rotate synchronously.

[0017] In the second aspect, the utility model provides a punching machine, including a drilling tool and a punching burr removal tool as described in any one of the aforementioned embodiments, wherein the drilling tool is used to drill holes in pipes, and the punching burr removal tool is used to perform secondary processing on the formed holes to remove burrs generated by drilling.

[0018] By providing a sleeve and a bayonet installed in the sleeve that can be retracted relative to the inside and outside of the pipe mouth, the sleeve and the bayonet can be placed at the drilling position of the pipe first, and then the movement of the sleeve or the bayonet is controlled to extend the bayonet from the pipe mouth of the sleeve, and then the burrs generated at the drilling position can be removed by controlling the rotation of the bayonet. After the burrs are removed, the subsequent hole burr removal operation can be performed by relatively retracting the bayonet into the sleeve and then withdrawing it from the drilling position.

[0019] The bayonet includes an elastically deformable cutter head, which can elastically move radially relative to the tube mouth of the sleeve. Specifically, under the restraining effect of the tube mouth, the cutter head can be compressed and retracted in the radial direction of the tube mouth; and after the bayonet is extended from the tube mouth of the sleeve, the cutter head is released and extended in the radial direction of the tube mouth after getting rid of the restraint of the tube mouth, so as to control different working conditions of the cutter head and facilitate switching between different operating procedures.

[0020] The cutting block arranged on the cutter head can perform rotational cutting on the hole-forming part in combination with the rotation of the cutter head when the cutter head extends out of the casing and releases the extension. The inclined blade arranged on the cutting block can effectively perform rotational cutting on the burrs generated on the side of the drill hole. At the same time, it can facilitate the formation of chamfers on the cutting part after secondary processing to further improve the hole-forming quality.

[0021] Through the punching burr removal tool in the present application, the burrs at the hole forming part can be effectively and reliably removed by rotating the burr cutter, thereby improving the technical difficulty of effectively removing the existing pipe drilling burrs.

[0022] Other features and advantages of the present application will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the structure of the punching burr removal tool in this application;

[0025] Figure 2 This is a schematic diagram of the structure of one of the cutter head forms in this application;

[0026] Figure 3 for Figure 2 A schematic diagram of the structure in which the middle cutter head extends out from the casing;

[0027] Figure 4 It is a schematic diagram of the structure of another type of cutter head in this application;

[0028] Figure 5 for Figure 4 A schematic diagram of the structure in which the middle cutter head extends out from the casing;

[0029] Figure 6 This is a schematic diagram of the structure of burrs on the inner surface of the drilling part of the pipe;

[0030] Figure 7 This is a schematic diagram of the casing and the cutter head extending into the borehole;

[0031] Figure 8 It is a schematic diagram of the state of the casing being withdrawn and the drilling head being used to cut the burrs;

[0032] Fig. 9 This is a schematic diagram of the casing outer casing cutter head after burr removal;

[0033] Fig.10 This is a schematic diagram of the overall withdrawal of the casing and the cutter head after burr removal.

[0034] icon:

[0035] 1- casing; 11- pipe opening; 12- arc chamfer;

[0036] 2-bayonet; 21-knife bar; 22-knife head; 23-fixed knife seat;

[0037] 3-cutting block; 31-inclined blade; 32-cutting seat;

[0038] 4-Casing clamp;

[0039] 5-cylinder; 51-piston rod;

[0040] 6- adapter;

[0041] 7-Rotate the motor;

[0042] 8-Bayonet fixture. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0044] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0045] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0046] The punching burr removal tool and punching machine in this application are mainly used to remove burrs generated after drilling holes in medical device pipes to improve the hole quality after drilling.

[0047] Specifically, by arranging the sleeve 1 and the bayonet 2 that cooperate with each other, the bayonet 2 can be extended and retracted relative to the tube mouth 11 of the sleeve 1 to control the exposure and retraction of the bayonet 2 on the sleeve 1. At the same time, combined with the elastically deformable cutter head 22, the cutter head 22 can be expanded outward or retracted inward to switch back and forth between expanding and rotating cutting and retracting and withdrawing drilling.

[0048] At the same time, by providing a cutting block 3 and a blade of a specific form, the burrs on the drilling part can be cut during the rotation of the burr cutter 2, and chamfers can be further formed to improve the hole quality.

[0049] See also Figure 1 The punching burr removal tool in the utility model mainly includes a sleeve 1 and a bayonet 2, wherein the bayonet 2 is mainly used to cut the burrs on the inner surface of the drilled hole of the pipe product, and the sleeve 1 is mainly used to control the exposed and retracted state of the bayonet 2, so that the overall tool can be transferred and switched at the drilling position.

[0050] The bayonet 2 is installed in the sleeve 1, and the bayonet 2 can be extended and retracted inward and outward relative to the pipe mouth 11 of the sleeve 1. By controlling the bayonet 2 or the sleeve 1 to move axially, the position of the bayonet 2 relative to the pipe mouth 11 of the sleeve 1 can be changed, and the bayonet 2 can be controlled to extend from the pipe mouth 11 of the sleeve 1 in the form of inward and outward extension, or the bayonet 2 can be controlled to retract from the pipe mouth 11 of the sleeve 1.

[0051] In the present application, after the pipe is drilled, it is fixed on the workbench, and the punching burr removal tool is moved downward as a whole, and the casing 1 is inserted into the drilling position. At this time, the blade head 22 of the bayonet 2 lies in the casing 1, and the casing 1 is withdrawn to make the bayonet 2 extend from the pipe mouth 11 of the casing 1, and the blade head 22 of the bayonet 2 corresponds to the drilling burr position, which is further conducive to the cutting operation.

[0052] The bayonet 2 includes an elastically deformable cutter head 22, which can be compressed and retracted or released and extended radially relative to the tube mouth 11 of the casing 1. When the cutter head 22 is compressed and retracted, the bayonet 2 can follow the casing 1 to extend or withdraw as a whole at the drilling site.

[0053] When the sleeve 1 and the cutter head 22 as a whole reach the drilling burr position, after the sleeve 1 is retracted as described above, the cutter head 22 can be released and extended at the drilling burr position, and the position of the cutter head 22 of the bayonet knife 2 corresponds to the drilling burr, and the drilling burr is cut and removed while the bayonet knife 2 is rotating.

[0054] The specific cutting action of the bayonet knife 2 is performed by the cutting block 3, which is specifically arranged on the cutter head 22. The cutting block 3 is provided with an inclined blade 31. When the cutter head 22 extends out of the sleeve 1, the bayonet knife 2 rotates to remove the burrs on the hole forming part.

[0055] After the removal is completed, the casing 1 is moved downward so that the casing 1 relatively wraps the released and extended cutter head 22, so that the cutter head 22 is compressed again and lies in the casing 1, and the burr removal tooling is moved upward as a whole to separate the casing 1 and the cutter head 22 from the drilling part, and subsequent burr removal is performed after the hole or pipe is replaced.

[0056] The punching burr removal tool in the present application can effectively remove burrs at the drilling site, thereby solving the problem that burrs generated after drilling are difficult to remove.

[0057] In one specific embodiment, the bayonet 2 includes a knife rod 21 inserted into the sleeve 1, and the end of the knife rod 21 includes a forked structure. The forked portion can be extended and retracted inward and outward relative to the pipe mouth 11 of the sleeve 1. After the forked portion is freed from the restraint of the pipe mouth 11, it can be extended and released outward; at the same time, the forked portion is compressed and lying after being re-wrapped by the sleeve 1.

[0058] The branch structure at the bifurcation portion can be heat treated or machined to form a structural state in which the branch can be elastically deformed, thereby ensuring that the cutter head 22 can be deformed outward or inward.

[0059] Combination Figure 2-Figure 3 The cutter head 22 includes different setting forms. In one specific implementation form, the cutter head 22 includes a double-sided cutter head 22, and both side branches of the bifurcation can be elastically deformed, and the cutting blocks 3 are respectively connected to the cutter heads 22 of the two side branches.

[0060] Through this form, cutting structures can be formed on both sides of the cutter head 22, which is beneficial for quickly cutting burrs at the drilling site.

[0061] Combination Figure 4-Figure 5 In another specific implementation form, the cutter head 22 includes a single-sided cutter head 22, one side branch of the bifurcated portion constitutes a fixed cutter seat 23, and the other side branch can be elastically deformed to form the cutter head 22, and the cutting block 3 is connected to the cutter head 22.

[0062] Through this form, a cutting structure can be formed on one side of the cutter head 22, and the branch on the other side forms a cutter seat, thereby meeting the need for burr removal of smaller diameter holes.

[0063] Regardless of the arrangement of the cutter head 22 , the cutter rod 21 is vertically inserted into the sleeve 1 . Preferably, the sleeve 1 and the cutter rod 21 are coaxially arranged and clearance-matched.

[0064] The coaxial arrangement of the sleeve 1 and the knife rod 21 can ensure that the burr cutter 2 can evenly cut the burrs and form regular chamfers during the rotation process.

[0065] The clearance fit between the two can facilitate the cutter head 22 to rotate synchronously in the casing 1 by the cutter rod 21, and can also provide a space for the cutter head 22 to shrink and lie down, which can facilitate the insertion and withdrawal of the casing 1 and the cutter head 22 in the drilling area.

[0066] From the perspective of cutting, the cutting block 3 is a structure independent of the cutter head 22, specifically a block structure fitted with the branch structure, including a cutting seat 32 capable of contacting and cooperating with the pipe mouth 11, the cutting seat 32 is connected to the side wall of the cutter head 22, and the inclined blade 31 is arranged on the upper and lower sides of the cutting seat 32. The side wall of the cutting seat 32 protrudes toward the middle, so that the cross section of the cutting block 3 is approximately a trapezoidal structure, and the burr cutter 2 is in the process of rotating, and the inclined blade 31 in the rotating state continuously cuts the burrs.

[0067] The sleeve 1, the knife rod 21, the knife head 22 and the cutting block 3 in this embodiment are all metal structures. In order to protect the knife head 22 during the extension and retraction process of the knife head 22 relative to the sleeve 1, the side wall of the cutting seat 32 has a smooth transition with the inclined blade 31. The pipe mouth 11 of the sleeve 1 is provided with an arc chamfer 12. Combined with the arc chamfer 12 being arranged on the inner side of the pipe mouth 11, it can effectively protect the inclined blade 31, while reducing the collision between the hard sharp corners of the pipe mouth 11 at the bottom of the sleeve 1 and the cutting block 3, and further ensuring the smoothness of the relative displacement between the sleeve 1 and the knife head 22.

[0068] In the present application, when the sleeve 1 and the bayonet 2 reach the drilling position, the position of the bayonet 2 remains unchanged, and the sleeve 1 moves up and down relative to the bayonet 2.

[0069] The sleeve 1 is clamped and fixed on the sleeve clamp 4 , and the sleeve clamp 4 is connected to a lifting mechanism, which can drive the sleeve clamp 4 and the sleeve 1 to move up and down relative to the bayonet 2 .

[0070] The lifting mechanism comprises a cylinder 5 . The sleeve clamp 4 is installed on an adapter seat 6 . A piston rod 51 is provided on the cylinder 5 . The telescopic end of the piston rod 51 is connected to the adapter seat 6 .

[0071] The cylinder 5 is connected with a driving air inlet pipe and a driving air outlet pipe, and is connected with the piston rod 51 on the cylinder 5 based on the adapter 6. The piston rod 51 can be extended and retracted by controlling the air intake and exhaust, thereby synchronously driving the adapter 6, the sleeve clamp 4 and the sleeve 1 to move up and down.

[0072] After the drilling is completed and the casing 1 and the cutter head 22 are inserted into the drilling position, the cylinder 5 is inflated by driving the air intake pipe to control the piston rod 51 to extend upward, driving the adapter 6, the casing fixture 4 and the casing 1 to move upward, so that the cutter head 22 is extended and released.

[0073] The bayonet 2 is driven to rotate by rotating the motor 7. After the burrs are removed, the cylinder 5 is exhausted by driving the air outlet pipe, and the piston rod 51 is controlled to retract downward, driving the adapter 6, the casing fixture 4 and the casing 1 to move downward, restoring the compression capacity of the cutter head 22 in the casing 1, and finally driving the casing 1 and the bayonet 2 to move upward as a whole and leave the drilling site.

[0074] In addition to using the cylinder 5, the lifting mechanism can also be in the form of an electric push rod or a threaded shaft screw, which can also achieve the technical purpose of controlling the lifting and lowering of the adapter 6, the sleeve clamp 4 and the sleeve 1, and will not be repeated here.

[0075] The rotation process of the bayonet 2 is specifically carried out by the rotating motor 7. The output end of the rotating motor 7 is connected to the bayonet clamp 8. The bayonet 2 is clamped and fixed on the bayonet clamp 8 by the tool rod 21. The rotating motor 7 can drive the bayonet clamp 8 and the bayonet 2 to rotate synchronously, thereby effectively completing the cutting and removal of burrs.

[0076] In this embodiment, the rotating motor 7 is arranged at the top, and is controlled by the punching machine to drive the punching burr removal tool to rise and fall as a whole, and enables the sleeve 1 to perform an independent lifting action.

[0077] The utility model also provides a punching machine, including a drilling tool and the above-mentioned punching burr removal tool. The drilling tool is used to drill holes in pipes. After the holes are drilled, the punching burr removal tool is used to perform secondary processing on the holes to remove burrs generated during the drilling process.

[0078] Combination Figure 6-Figure 10 After the punching machine completes the drilling, the bayonet 2 can be positioned to the same position as the punch needle by setting the distance parameters. Then, the bayonet 2 and the sleeve 1 are lowered to the appropriate position and the outer sleeve 1 is withdrawn to expose the internal bayonet 2. The bayonet 2 performs circular cutting on the burr position to remove the burrs. Finally, the sleeve 1 is lowered after the bayonet 2 stops, and the bayonet 2 is rewrapped and withdrawn together. At this time, the product burrs will be removed and chamfers will be left.

[0079] The double-sided blade of the cutting block 3 can also be used to remove burrs on the outer surface of the pipe product. After the operation is completed, the sleeve 1 needs to be withdrawn to expose the burr knife 2 to prevent the burr knife 2 from being placed in the released and extended state for a long time, so that the burr knife 2 is permanently deformed and cannot be used.

[0080] During use, in addition to controlling the lifting of the sleeve 1, the motor of the bayonet 2 and the lifting of the bayonet 2 can also be controlled by the lifting mechanism, which can also achieve the technical purpose of controlling the exposure and retraction of the cutter head 22, which will not be repeated here.

[0081] The punching machine of the utility model can improve the hole quality, increase the processing efficiency and extend the service life of the tool.

[0082] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0083] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A punching burr removal tool, characterized in that: It comprises a sleeve and a bayonet installed in the sleeve and capable of extending and retracting relative to the sleeve opening; The bayonet knife comprises an elastically deformable knife head, and the knife head can be compressed and retracted or released and extended in the radial direction relative to the tube opening of the sleeve; The cutter head is provided with a cutting block, and the cutting block includes an inclined blade. When the cutter head extends out of the sleeve, the burrs on the hole forming part are removed by rotating the burr cutter.

2. The punching burr removal tool according to claim 1, characterized in that: The burr knife comprises a knife rod which is inserted and installed in the sleeve, and the end of the knife rod comprises a forked structure, and the forked part is telescopic inward and outward relative to the pipe opening of the sleeve.

3. The punching burr removal tool according to claim 2, characterized in that: The cutter head comprises a double-sided cutter head, and both side branches of the bifurcated part can be elastically deformed, and the cutting blocks are respectively connected to the cutter heads of the two side branches.

4. The punching burr removal tool according to claim 2, characterized in that: The cutter head comprises a single-sided cutter head, wherein one side branch of the bifurcated portion forms a fixed cutter seat, and the other side branch can be elastically deformed to form a cutter head, and the cutting block is connected to the cutter head.

5. The punching burr removal tool according to claim 2, characterized in that: The knife rod is vertically inserted into the sleeve, and the sleeve and the knife rod are coaxially arranged and clearance-matched.

6. The punching burr removal tool according to any one of claims 1 to 5, characterized in that: The cutting block includes a cutting seat capable of contacting and cooperating with the pipe mouth, the cutting seat is connected to the side wall of the cutter head, the inclined blade is arranged on the upper and lower sides of the cutting seat, and there is a smooth transition between the side wall of the cutting seat and the inclined blade. The pipe mouth of the sleeve is provided with an arc chamfer, and the arc chamfer is arranged on the inner side of the pipe mouth.

7. The punching burr removal tool according to claim 6, characterized in that: The sleeve is clamped and fixed on a sleeve fixture, and the sleeve fixture is connected to a lifting mechanism, and the lifting mechanism can drive the sleeve fixture and the sleeve to move up and down relative to the bayonet.

8. The punching burr removal tool according to claim 7, characterized in that: The lifting mechanism comprises a cylinder, the sleeve clamp is installed on an adapter seat, a piston rod is arranged on the cylinder, and a telescopic end of the piston rod is connected to the adapter seat.

9. The punching burr removal tool according to claim 1, characterized in that: It also includes a rotating motor, the output end of which is connected to a bayonet clamp, the bayonet is clamped and fixed on the bayonet clamp, and the rotating motor can drive the bayonet clamp and the bayonet to rotate synchronously.

10. A punching machine, characterized in that: It comprises a drilling tool and a punching burr removal tool as described in any one of claims 1 to 9, wherein the drilling tool is used for drilling holes in pipes, and the punching burr removal tool is used for secondary processing of the holes to remove burrs generated by drilling.

Images