Device for removing burrs

Abstract

According to the device for removing the burrs, the burrs of a workpiece to be deburred are located at an opening in the inner side of an extension channel, and the device is characterized by comprising a protection piece arranged at the opening in the outer side of the extension channel of the workpiece to be deburred, and the protection piece comprises a cylindrical lining; the cylindrical bushing comprises a main body part and an annular flange part which horizontally extends towards the outer side from the outer peripheral surface of the main body part, the flange part abuts against the peripheral edge part of the outer side opening, and the main body part is provided with a center hole for a deburring tool to penetrate through. Due to the arrangement of the cylindrical lining, when an operator uses the deburring tool to remove burrs at the opening in the inner side, a main body of the deburring tool can abut against the inner side of the cylindrical lining to fix the angle of the deburring tool, and when the deburring tool moves back and forth in the extending channel, the deburring tool can move back and forth. Friction of the main body on the inner side of the cylindrical lining replaces direct friction on an outer opening in the prior art, and the machining quality of the workpiece to be deburred at the outer opening is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of accessories for clamping scrapers or workpieces to be scraped, in particular to a device for removing burrs. Background Art

[0002] Burr removal is one of the processes of mechanical finishing, which is used to improve the surface finish and dimensional accuracy of the product and reduce the friction and wear caused by burrs. It is even more necessary to remove the burrs of the machined holes. Generally, the burrs are removed by machining. If the product to be deburred is such as Figure 1 and Figure 2 The shell workpiece 1' shown is annular and has at least two axially extending elongated holes 14' spaced circumferentially on the annular circumferential wall, wherein the locations requiring deburring are A and B, and the common point of these two locations is that they are connected to their respective corresponding elongated holes 14' and have an extension channel 10' extending along the extension, and the extension channel 10' is cross-arranged with their respective corresponding elongated holes 14'. Since the burr removal parts at A and B, namely the inner opening 11' of the extension channel 10', are relatively special, the extension channel 10' is formed by subsequent punching after the shell workpiece 1' is cast, a bottom wall 101' perpendicular to the inner wall of the extension channel 10' is formed on the inner side of the extension channel 10'. The bottom wall 101' is parallel to and corresponds to the outer opening 13' in the direction of the central axis of the extension channel 10'. The lower edge of the bottom wall 101' constitutes a part of the edge of the inner opening 11', and the inner opening 11' is connected to the elongated hole 14'.

[0003] Existing automatic deburring tools, such as the Chinese utility model patent "A Deburring Tool" with patent number ZL202021542409.3 (publication number CN212350490U), propose a tool capable of processing burrs on the edge of a straight hole. The radius of the tool body is adapted to the radius of the straight hole, and the tool passes through an extension channel 10' and then rotates to remove burrs. However, when this deburring tool is applied to the above-mentioned shell workpiece 1', it encounters the following problems:

[0004] First, after the tool body enters the extension channel 10 ′, if the radius of its rotation matches the radius R of the extension channel 10 ′, the tool will be blocked by the bottom wall 101 ′ and cannot fully enter the oblong hole 14 ′, thereby failing to remove the burr at point A;

[0005] Second, if the tool's rotation radius is adjusted to allow it to penetrate the oblong hole 14', the operator needs to precisely control the rotating blade to align it exactly with point A. At the same time, point A is blocked by the outer shell of the shell workpiece 1', and requires the use of an optical instrument that can penetrate the interior of the shell workpiece 1'. In addition, vibrations are generated during the rotation process, and the position of the rotating blade may shift at any time. If the operator is not careful, the wall of the oblong hole 14' near point A may be scratched, making the operation more difficult.

[0006] Considering the above factors, the burrs at points A and B of the inner opening 11' that need to be removed at the same time can only be removed manually. The traditional manual deburring method is that the operator inserts a file 12' into the extension channel 10' to remove the burrs. When the extension channel 10' is deep, it is too laborious to directly remove the burrs on the inner inclined surface 11'. Figure 3 and 4 As shown, it is necessary to find a fulcrum at the outer opening 13 ′ of the extension channel 10 ′ to fix the angle of the file 12 ′, which will cause the file 12 ′ to scrape the burrs on the inner inclined surface 11 ′ while also scraping the outer opening 13 ′, resulting in a decrease in product quality.

[0007] Therefore, how to avoid the outer opening 13' from being bruised during deburring becomes an urgent problem to be solved; secondly, after the deburring tool removes the burrs from the inner opening 11', the burrs will fall into the gap 14' of the shell workpiece 1', making it difficult to clean. Utility Model Content

[0008] The first technical problem to be solved by the present invention is to provide a device for removing burrs that is not easy to damage the workpiece in response to the above-mentioned existing technical status, especially for removing burrs of an inner opening with an extended channel, and the internal gap of the inner opening is small and has a bottom wall corresponding to the outer opening in the extended channel.

[0009] The second technical problem to be solved by the present invention is to provide a burr removal device for conveniently cleaning burrs that fall into the gaps of workpieces in response to the above-mentioned existing technical status.

[0010] The technical solution adopted by the present invention to solve the first technical problem is: the device for removing burrs, the burrs of the workpiece to be deburred are located at the inner opening of the extension channel, and is characterized in that: it includes a protective member arranged at the outer opening of the extension channel of the workpiece to be deburred, the protective member includes a cylindrical bushing, the cylindrical bushing includes a main body and a flange portion that extends horizontally outward from the outer peripheral surface of the main body and is annular, the flange portion is abutted against the peripheral portion of the outer opening, and the main body has a center hole for the deburring tool to pass through.

[0011] To facilitate deburring of the inner opening by the operator, the inner side of the extension channel of the workpiece to be deburred further comprises a bottom wall that abuts the inner opening, and the wall thickness of the main body is smaller than the protrusion of the bottom wall. The design of the main body wall thickness being smaller than the protrusion of the bottom wall is intended to ensure that the deburring tool resting against the flange can contact the topmost point of the inner opening to remove the burr, regardless of its tilt. This not only effectively removes burrs, but also reduces labor during the deburring process by allowing the deburring tool to abut against the inner side of the flange in the protective member.

[0012] To solve the second technical problem, preferably, a blowing mechanism is further included for blowing out the burrs removed from the gaps in the workpiece to be deburred. The setting of the blowing mechanism prevents the burrs from remaining in the gaps, thus avoiding scratches on the inner wall of the deburred workpiece.

[0013] In order to enhance the effectiveness of the blowing mechanism in removing burrs from the gap, the blowing mechanism further includes a support base and a blowing member connected to the support base. The support base is provided with a holding groove for the workpiece to be deburred, and the blowing member includes a body higher than the support base, the body having a hollow portion that is at least partially hollow, the hollow portion being provided with an air inlet for allowing gas provided by an external air supply to flow in, and the corresponding hollow portion of the body having at least two air outlets for allowing gas provided by the external air supply to flow out, each of the air outlets corresponding to its corresponding gap. After the operator places the workpiece to be deburred on the holding groove and removes the burrs with a deburring tool, the burrs fall into the gap. At this time, the blowing mechanism is opened, and the air outlet of the blowing member can be used to blow the burrs out of the gap.

[0014] To ensure that the air outlets correspond to the gaps, the main body is annular, with a raised ring protruding from the surface of the main body to fit the gaps, and the air outlets are located on the raised rings. The raised rings not only act as a limiter, limiting the vertical movement of the workpiece to be deburred, but also allow the air outlets to extend into the gaps to remove burrs, shortening the distance between the air outlets and the inner opening, making it easier to remove burrs.

[0015] To ensure that the workpiece being deburred is not blown off course during deburring, and that the air velocity at each air outlet is uniform, the hollow portion is further configured as an annular air duct formed within the convex ring, with each air outlet positioned on the surface of the convex ring. The annular air duct ensures uniform wind pressure along the circumferential direction within the hollow portion, resulting in a substantially uniform pressure difference between each air outlet and the gap, thereby creating a more uniform air flow to remove burrs.

[0016] To facilitate the operator's control of the blowing mechanism, the blowing mechanism further includes an air inlet pipe connected to the air inlet, and an air inlet switch is provided on the air inlet pipe for controlling the on / off state of the air inlet pipe. The provision of the air inlet switch allows the operator to change the blowing state in the gap at any time.

[0017] In order to facilitate operators to take and place the cylindrical bushing and deburring tool, further, the support seat and the blowing mechanism are both arranged on a workbench, and the workbench includes a first placement area for placing the cylindrical bushing and a second placement area for placing the deburring tool.

[0018] To keep the first and second placement areas tidy, the workbench further includes a material discharge platform, which is provided with the first and second placement areas. Brackets connected to the workbench are provided around the material discharge platform to maintain a predetermined distance from the workbench surface. The predetermined distance is greater than the height of the blowing element. This technical solution prevents burrs in the gap from being blown into the first and second placement areas.

[0019] In order to enhance the safety of the operator during deburring, the cross section of the bracket is further in the shape of an inverted "U" with the opening facing the blowing mechanism, and includes:

[0020] Two baffles are provided, which are respectively arranged on both sides of the workbench and are used to block burrs flying out of the air outlet;

[0021] A ventilation window is provided on the connection portion between the two baffles, corresponding to the air outlet. The arrangement of the baffles and the ventilation window ensures that the burrs blown away from the operator and out of the ventilation window, thereby preventing the burrs from being blown onto the sides of the workbench or the operator himself and injuring him.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] 1. A new protective part is designed to cooperate with the deburring process to protect the extension channel of the workpiece to be deburred from being damaged;

[0024] 2. The main body of the protective member can protect the inner peripheral wall of the extension channel of the deburred workpiece, while the flange can abut against the extension channel, and the protective member can be fixed with simple operation;

[0025] 3. The protective member allows the operator to use the deburring tool to remove burrs from the inner opening while the main body of the tool can rest against the inner side of the cylindrical bushing to fix the angle of the deburring tool. When the deburring tool moves back and forth in the extension channel, the friction of the main body on the inner side of the cylindrical bushing replaces the direct friction on the outer opening in the prior art, thereby protecting the outer opening from damage and improving the processing quality of the workpiece to be deburred at the outer opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of a shell workpiece of background technology;

[0027] Figure 2 for Figure 1 A longitudinal section of

[0028] Figure 3 A schematic diagram of the positional relationship of a file used in the background art to remove burrs from an inner opening;

[0029] Figure 4 Another schematic diagram of the position relationship of a file in the background art for removing burrs from an inner opening;

[0030] Figure 5 This is a schematic structural diagram of an embodiment of the present utility model;

[0031] Figure 6 for Figure 5 A longitudinal section of

[0032] Figure 7 for Figure 6 A partial enlarged view of

[0033] Figure 8 A longitudinal cross-sectional view of the deburring tool and the cylindrical bushing in another state according to an embodiment of the present invention;

[0034] Figure 9 This is a schematic diagram of the assembly relationship between the workpiece to be deburred, the support seat, and the blowing mechanism according to an embodiment of the utility model;

[0035] Figure 10 for Figure 9 A longitudinal section of

[0036] Figure 11 This is a schematic diagram of the assembly relationship between the support base and the blowing member in an embodiment of the utility model;

[0037] Figure 12 A longitudinal cross-sectional view of a blowing member according to an embodiment of the present utility model;

[0038] Figure 13 This is a schematic diagram of the overall structure of a workbench according to an embodiment of the present invention;

[0039] Figure 14 This is a schematic diagram of an operator performing a deburring operation on a workbench according to an embodiment of the present utility model. DETAILED DESCRIPTION

[0040] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0041] like Figures 5 to 14 The burr removal device of this embodiment is mainly used to remove burrs at the openings on both sides of the extension channel in the workpiece processing hole, such as Figures 1 to 4 As shown, when the workpiece 1' has an elongated hole 14' and a bottom wall 101' connected to the extension channel 10', the existing tool for removing burrs by rotation cannot be used because it cannot reach the elongated hole 14'. The method of removing burrs by using a file will damage the hole wall of the outer opening 13' while filing the burrs of the inner opening 11', affecting the quality of the finished workpiece. Therefore, it is beneficial to provide a device for removing burrs that is not easy to damage the workpiece, especially for removing burrs of the inner opening 11' with an extension channel 10', and the inner gap of the inner opening 11' is small and has a bottom wall corresponding to the outer opening 13' in the extension channel 10'. The structure of the burr removal device will be described in detail below:

[0042] See Figures 5 to 8 The burr of the workpiece a to be deburred is located at the inner opening a1 of the extension channel a0. The device for deburring the burrs includes a protective member 1 provided at the outer opening a2 of the extension channel a0 of the workpiece a to be deburred. The protective member 1 includes a cylindrical bushing 2. The cylindrical bushing 2 includes a main body 21 and an annular flange 22 extending horizontally outward from the outer peripheral surface of the main body 21. The flange 22 abuts against the peripheral edge a3 of the outer opening a2. The main body 21 has a central hole 211 for the deburring tool b to pass through. In addition, the protective member 1 may also include other components used in conjunction with the cylindrical bushing 2, such as a washer (not shown) to prevent the cylindrical bushing 2 from sliding.

[0043] The inner side of the extension channel a0 of the workpiece a to be deburred has a bottom wall a4 that connects to the inner opening a1. The wall thickness d1 of the main body 21 is less than the projection d2 of the bottom wall a4. The projection d2 is the maximum thickness of the portion of the bottom wall a4 that protrudes beyond the peripheral wall of the extension channel a0. This feature of the main body 21 having a wall thickness d1 less than the projection d2 of the bottom wall a4 ensures that the deburring tool b resting against the flange 22 can contact the topmost portion of the inner opening a1 and remove burrs regardless of its tilt, facilitating burr removal from the inner opening a1. Furthermore, a gap is provided between the first end of the main body 21, near the inner opening a1, and the inner opening a1. This gap allows the operator to remove burrs from the lower edge of the inner opening a1 when inserting the deburring tool into the gap a5 of the extension channel a0.

[0044] See Figure 5 The burr removal device of this embodiment further includes a blowing mechanism 3 for blowing out the burrs removed from the gap a5 of the workpiece a to be deburred. The arrangement of the blowing mechanism 3 prevents burrs from remaining in the gap a5, thereby preventing the inner wall of the deburred workpiece a from being scratched.

[0045] See Figure 11 The blowing mechanism 3 includes a support base 4 and a blowing member 5 connected to the support base 4. The support base 4 is provided with a storage groove 41 for the workpiece a to be deburred to be placed, and the blowing member 5 includes a body that is higher than the support base 4. The body has a hollow portion that is at least partially hollow, and the hollow portion is provided with an air inlet 51 for the flow of gas provided by an external air supply. The corresponding hollow portion of the body has at least two air outlets 52 for the flow of gas provided by the external air supply. Each air outlet 52 corresponds to its corresponding gap a5. The operator places the workpiece a to be deburred on the storage groove 41 and removes the burrs with the deburring tool b. During the deburring process, the burrs will fall into the gap a5. At this time, the blowing mechanism is opened, and the air outlet 52 of the blowing member 5 can be used to blow the burrs out of the gap a5. In this embodiment, the body is annular, and a ring 53 is provided on the surface of the body to match the gap a5. Each air outlet 52 is provided on the ring 53. Due to the setting of the convex ring 53, on the one hand, it can play a limiting role, that is, it limits the up and down movement of the workpiece a to be deburred. On the other hand, it enables the air outlet 52 to extend into the gap a5 to blow away the burrs, shortening the distance between the air outlet 52 and the inner opening a1, making it easier to blow away the burrs, and maintaining the air outlet 52 corresponding to the gap a5.

[0046] See Figure 10 and Figure 12The hollow portion is an annular air duct 531 formed by the hollowing inside of the convex ring 53, and the air outlets 52 are evenly distributed on the surface of the convex ring 53. The setting of the annular air duct 531 ensures that the wind pressure along the circumferential direction in the hollow portion is the same, and thus the pressure difference between each air outlet 52 and the gap a5 is basically the same, ensuring that the workpiece a to be deburred is not blown off when the burrs are blown away, that is, the air outlet speed of each air outlet 52 is uniform. The blowing mechanism 3 also includes an air inlet pipe 54 connected to the air inlet 51. The air inlet pipe 54 is provided with an air inlet switch 55 for controlling the on / off state of the air inlet pipe 54. The setting of the air inlet switch 55 allows the operator to change the blowing state in the gap a5 at any time, making it convenient for the operator to control the blowing mechanism 3. The support seat 4 and the blowing mechanism 3 are both arranged on a workbench 6. The workbench 6 includes a first placement area 61 for placing the cylindrical bushing 2 and a second placement area 62 for placing the deburring tool b, which facilitates the operator to take and place the cylindrical bushing 2 and the deburring tool b. For details, please refer to Figure 13 and Figure 14 .

[0047] In addition, the workbench 6 of this embodiment also includes a discharge platform 63, which is provided with a first placement area 61 and a second placement area 62. A bracket 64 connected to the workbench 6 is provided around the discharge platform 63 to maintain a predetermined distance from the surface of the workbench 6, which is greater than the height of the blowing member 5. This design prevents burrs within the gap a5 from being blown into the first and second placement areas 61, 62, thereby keeping them clean. The bracket 64 has an inverted "U"-shaped cross-section with its opening facing the blowing mechanism 3 and includes a baffle 641 and a ventilation window 642. Two baffles 641 are provided, one on each side of the workbench 6, to block burrs ejected from the air outlet 52. The ventilation window 642 is located on the connecting portion 643 between the two baffles 641, corresponding to the air outlet 52. The setting of the baffle 641 and the ventilation window 642 ensures that the burrs blown away fly out of the ventilation window 642 in the direction away from the operator, preventing the burrs from being blown to the sides of the workbench 6 or the operator himself and injuring people, thereby enhancing the safety of the operator when removing burrs.

[0048] In summary, the working process of the burr removal device of this embodiment is as follows: the operator stands in front of the workbench 6, see Figure 14 , place the workpiece a to be deburred on the shelf groove 41, align the gap a5 with the convex ring 53 and gently press the workpiece a to be deburred inward to prevent it from slipping. The operator puts the cylindrical bushing 2 on the outer opening a2, and uses the deburring tool b to pass through the cylindrical bushing 2 and into the extension channel a0 to remove the burrs of the inner opening a1. Then, step on the air intake switch 55 to blow the burrs in the gap a5 out of the ventilation window 642.

Claims

1. A device for deburring a workpiece (a) having burrs located at an inner opening (a1) of an extension channel (a0), characterized in that: The invention comprises a protective member (1) arranged at the outer opening (a2) of the extension channel (a0) of the workpiece (a) to be deburred, the protective member (1) comprising a cylindrical bushing (2), the cylindrical bushing (2) comprising a main body (21) and a flange (22) extending horizontally outward from the outer peripheral surface of the main body (21) and in an annular shape, the flange (22) being in contact with the peripheral edge (a3) ​​of the outer opening (a2), and the main body (21) having a central hole (211) for a deburring tool (b) to pass through.

2. The burr removal device according to claim 1, characterized in that: The inner side of the extension channel (a0) of the workpiece (a) to be deburred has a bottom wall (a4) connected to the inner opening (a1), and the wall thickness d1 of the main body (21) is smaller than the protrusion d2 of the bottom wall (a4).

3. The burr removal device according to claim 1 or 2, characterized in that: It also includes a blowing mechanism (3) for blowing out the burrs removed from the gap (a5) in the workpiece (a) to be deburred.

4. The burr removal device according to claim 3, characterized in that: The blowing mechanism (3) includes a support seat (4) and a blowing member (5) connected to the support seat (4), the support seat (4) is provided with a resting groove (41) for resting a workpiece (a) to be deburred, and the blowing member (5) includes a body higher than the support seat (4), the body having a hollow portion that is at least partially hollow, the hollow portion being provided with an air inlet (51) for allowing gas provided by an external air supply portion to flow in, and the corresponding hollow portion of the body having at least two air outlets (52) for allowing gas provided by the external air supply portion to flow out, each of the air outlets (52) corresponding to its corresponding gap (a5).

5. The burr removal device according to claim 4, characterized in that: The main body is annular, and a convex ring (53) adapted to the gap (a5) is convexly provided on the surface of the main body, and each air outlet (52) is provided on the convex ring (53).

6. The burr removal device according to claim 5, characterized in that: The hollow portion is an annular air duct (531) formed by the hollowing inside of the convex ring (53), and each of the air outlets (52) is arranged on the surface of the convex ring (53).

7. The burr removal device according to claim 4, characterized in that: The blowing mechanism (3) further comprises an air inlet pipe (54) connected to the air inlet (51), and an air inlet switch (55) for controlling the on / off state of the air inlet pipe (54) is provided on the air inlet pipe (54).

8. The burr removal device according to any one of claims 4 to 7, characterized in that: The support seat (4) and the blowing mechanism (3) are both arranged on a workbench (6), and the workbench (6) includes a first placement area (61) for placing the cylindrical bushing (2) and a second placement area (62) for placing the deburring tool (b).

9. The burr removal device according to claim 8, characterized in that: The workbench (6) further comprises a discharge platform (63), on which the first placement area (61) and the second placement area (62) are provided. A bracket (64) connected to the workbench (6) is provided on the peripheral side of the discharge platform (63), so that the discharge platform (63) and the table surface of the workbench (6) maintain a preset distance, and the preset distance is greater than the height of the blowing member (5).

10. The burr removal device according to claim 9, characterized in that: The cross section of the bracket (64) is in an inverted "U" shape with its opening facing the blowing mechanism (3), and comprises: Two baffles (641) are provided, respectively disposed on both sides of the workbench (6) and used to block burrs flying out of the air outlet (52); The ventilation window (642) is provided on the connecting portion (643) connecting the two baffles (641) and corresponds to the air outlet (52).

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