Tool for milling support lugs

Abstract

The utility model provides a tool for milling a support lug, which relates to the technical field of tools for machining, and comprises a tool base, a first limiting hole, a fixing hole, a second limiting hole, a first positioning hole and a second positioning hole, the first stud is in threaded connection with the tool base through the first limiting hole, an eccentric wheel is arranged on the outer wall of the first stud, and the central axis of the eccentric wheel does not coincide with the central axis of the first stud; the fixing stud is in threaded connection with the tool base through the fixing hole, and the fixing stud is sleeved with a pressing plate used for fixing the support; an annular gasket is arranged between the head of the fixing stud and the pressing plate. The limiting block is arranged on the tool base and used for limiting the support; the number of the first limiting holes is two times that of the fixing holes. According to the utility model, the support lug is locked and limited in an eccentric locking manner, and the support lug is quickly disassembled and assembled in a manner of the pressing plate and the annular gasket.

Description

Technical Field

[0001] The utility model relates to the technical field of tooling for machining, in particular to a tooling for milling a bracket lug. Background Art

[0002] At present, when milling a bracket lug on a vertical CNC milling machine, it is necessary to first position and clamp the bracket, and then mill the lug on the bracket. When positioning and clamping the bracket lug, some of the fixtures used are relatively simple. Although they can clamp the bracket lug, the clamping effect is poor, and it is easy for the bracket lug to displace during the processing, resulting in insufficient machining accuracy. Another part of the fixtures is relatively complex and can clamp the bracket lug in multiple directions to prevent the bracket lug from displacing during the processing. However, such fixtures are relatively complex when disassembling and assembling the bracket lug, which affects the processing efficiency of the bracket lug. Summary of the Utility Model

[0003] In order to solve the problems of displacement of the bracket lug on the tooling and time-consuming disassembly and assembly of the bracket lug, the utility model provides a tooling for milling a bracket lug, which locks and limits the bracket lug by means of eccentric locking, and realizes the quick disassembly and assembly of the bracket lug by means of a pressing plate and an annular gasket.

[0004] The technical solution adopted by the utility model is as follows:

[0005] A tooling for milling a bracket lug is provided, including:

[0006] A tooling base, on which one or more first limiting holes and fixing holes are respectively provided;

[0007] A first stud, which is threadedly connected to the tooling base through the first limiting hole. An eccentric wheel is provided on the outer wall of the first stud, and the central axis of the eccentric wheel does not coincide with the central axis of the first stud;

[0008] A fixing stud, which is threadedly connected to the tooling base through the fixing hole, and a pressing plate for fixing the bracket is sleeved on the fixing stud; an annular gasket is provided between the head of the fixing stud and the pressing plate;

[0009] A limiting block, which is arranged on the tooling base and used for limiting the bracket;

[0010] Wherein, when both the first limiting hole and the fixing hole are multiple, the connection line of the center points of the multiple first limiting holes is a straight line, and the number of the first limiting holes is equal to twice the number of the fixing holes.

[0011] In some embodiments of the present utility model, there are two limiting blocks, and the angle formed by the tangent extension lines at the connection points of the two limiting blocks and the bracket is 90°.

[0012] In some embodiments of the present utility model, an annular fixing groove is provided along the circumferential direction of the annular gasket.

[0013] In some embodiments of the present utility model, an opening is provided on the side wall of the annular gasket, and the diameter of the opening is equal to the diameter of the column body of the fixing stud.

[0014] In some embodiments of the present utility model, a second limiting hole is further provided on the tooling base, a second stud is threadedly connected to the tooling base through the second limiting hole, and an arc-shaped groove for abutting against the second stud is provided on the outer wall of the pressing plate;

[0015] Wherein, the connecting line between the center points of the second limiting hole and the fixing hole is perpendicular to the connecting line between the center points of the adjacent first limiting holes.

[0016] In some embodiments of the present utility model, a groove is provided on the tooling base along its own length direction.

[0017] In some embodiments of the present utility model, there is a gap between the adjacent brackets of the adjacent pressing plates.

[0018] In some embodiments of the present utility model, the tooling base is provided with a plurality of positioning holes.

[0019] The beneficial effects of the present utility model are as follows:

[0020] 1. By rotating the first stud, the eccentric wheel located on the first stud is driven to rotate, so that the locking end of the eccentric wheel towards the outside of the tooling base is used to lock one end of the bracket. Then, the bracket is placed between the limiting block and the first stud. One end of the bracket contacts the limiting block, and the other end is stuck on the first stud. At this time, start rotating the first stud, and the first stud drives the eccentric wheel to rotate. During the rotation process, the locking end of the eccentric wheel will gradually complete the displacement fixation of the bracket in the horizontal direction;

[0021] 2. The pressing plate is sleeved on the fixing stud, and the fixing stud is threadedly connected to the tooling base through the fixing hole provided on the tooling base. During the tightening process of the fixing stud, the pressing plate on the fixing stud will gradually press the bracket. The annular gasket located between the fixing stud and the pressing plate enhances the effect of the fixing stud pressing the bracket through the pressing plate, preventing the ear on the bracket from displacing in the vertical direction during the processing and affecting the processing accuracy. Moreover, the combined use of the pressing plate, the annular gasket and the fixing stud also makes the disassembly and assembly process of the bracket more convenient and fast. Brief Description of the Drawings

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0023] Figure 1 Is a three-dimensional schematic diagram of a tooling for milling the bracket ear

[0024] Figure 2 Is a bottom view of a tooling for milling the bracket ear

[0025] Figure 3 Is a top view of a tooling for milling the bracket ear

[0026] Figure 4 Is Figure 3 A partial enlarged schematic diagram at position A in

[0027] Figure 5 Is a structural schematic diagram of the pressing plate in a tooling for milling the bracket ear

[0028] Reference Numerals:

[0029] 1 - Tooling base, 10 - First limiting hole, 11 - Second limiting hole, 12 - Fixing hole, 13 - First stud, 14 - Second stud, 15 - Fixing stud, 16 - Eccentric wheel, 17 - Gasket, 170 - Fixing groove, 18 - Groove, 19 - Positioning hole, 2 - Limiting block, 3 - Pressing plate, 30 - Arc groove, 31 - Placing groove, 4 - Bracket Detailed Embodiments

[0030] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of the present utility model. To simplify the disclosure of the present utility model, components and settings of specific examples are described below. Of course, they are only examples and are not intended to limit the present utility model.

[0032] The embodiments of the utility model will be described in detail below with reference to the accompanying drawings. Embodiment

[0033] As Figures 1-3 shown, this embodiment provides a tooling for milling the ear of the bracket 4, including:

[0034] A tooling base 1, on which one or more first limiting holes 10 and fixing holes 12 are respectively provided;

[0035] A first stud 13, which is threadedly connected to the tooling base 1 through the first limiting hole 10. An eccentric wheel 16 is provided on the outer wall of the first stud 13, and the central axis of the eccentric wheel 16 does not coincide with the central axis of the first stud 13;

[0036] A fixing stud 15, which is threadedly connected to the tooling base 1 through the fixing hole 12. A pressing plate 3 for fixing the bracket 4 is sleeved on the fixing stud 15; a ring gasket 17 is provided between the head of the fixing stud 15 and the pressing plate 3;

[0037] A limiting block 2, which is arranged on the tooling base 1 and is used for limiting the bracket 4;

[0038] Wherein, when both the first limiting holes 10 and the fixing holes 12 are multiple, the connecting line of the center points of the multiple first limiting holes 10 is a straight line, and the number of the first limiting holes 10 is equal to twice the number of the fixing holes 12.

[0039] In this embodiment, the number of the first limiting holes 10 is six, and the number of the fixing holes 12 is three. Each fixing hole 12 and two first limiting holes 10 are used as a group. Specifically, one fixing hole 12 is located between two adjacent first limiting holes 10. It should be noted that the two adjacent first limiting holes 10 here are non-repeated first limiting holes 10, that is, after one fixing hole 12 and two first limiting holes 10 are used as a group, the fixing hole 12 and the first limiting holes 10 in another group will not use the fixing hole 12 and the first limiting holes 10 in the previous group. Among them, for the line segment connecting the center points of two adjacent first limiting holes 10, another line segment is made from the midpoint of this line segment to the center point of the fixing hole 12, and these two line segments are perpendicular to each other, that is, the center point of the fixing hole 12 is on the perpendicular bisector of the connection line of the center points of two adjacent first limiting holes 10.

[0040] Both the first stud 13 and the fixing stud 15 are composed of three parts, namely, a head, a neck, and a threaded part. The difference between the two lies in different sizes and uses, so they are named differently. Among them, the eccentric wheel 16 is arranged on the non-threaded part of the neck of the first stud 13, and the annular gasket 17 is located on the non-threaded part of the neck of the fixing stud 15.

[0041] When it is necessary to fix the bracket 4, rotate the first stud 13 and the fixing stud 15 respectively, so that the eccentric wheel 16 on the first stud 13 also rotates along with the first stud 13, and at the same time remove the fixing stud 15 from the fixing hole 12. During the rotation of the eccentric wheel 16, the part of the eccentric wheel 16 used to lock and limit the bracket 4 needs to rotate to the other side, so that the bracket 4 will not be restricted by the eccentric wheel 16 and the limiting block 2. At this time, the bracket 4 can be placed between the limiting block 2 and the eccentric wheel 16. After the bracket 4 is placed, rotate the first stud 13 again. Since the central axis of the eccentric wheel 16 does not coincide with the central axis of the first stud 13, the eccentric wheel 16 can lock and limit the bracket 4. In addition, when fixing the bracket 4, the first stud 13 can also be removed from the first limiting hole 10, then the bracket 4 is placed on the tooling base 1, and then the first stud 13 is aligned with the first limiting hole 10 again and tightened. During the tightening process, the bracket 4 can be locked and limited. After the eccentric wheel 16 on the first stud 13 completes the limiting of the bracket 4, then the annular gasket 17 and the pressing plate 3 are sleeved on the fixing stud 15 in sequence, and the fixing stud 15 is aligned with the fixing hole 12 opened on the tooling base 1 and tightened. During the tightening process of the fixing stud 15, the pressing plate 3 can be placed on the bracket 4. When the fixing stud 15 rotates until it is in contact with the annular gasket 17, and at this time the annular gasket 17 is also in contact with the pressing plate 3, the position of the pressing plate 3 needs to be adjusted so that the pressing plate 3 can be in the position with the largest contact area with the bracket 4, and then the fixing stud 15 is tightened to prevent the ear on the bracket 4 from being displaced due to the influence of the processing equipment during processing; when it is necessary to disassemble the processed bracket 4, first rotate the fixing stud 15 until the fixing stud 15 is disengaged from the rotational connection with the tooling base 1, then remove the fixing stud 15 and the pressing plate 3 and the annular gasket 17 on the fixing stud 15, and then rotate the first stud 13 until the eccentric wheel 16 on the first stud 13 does not lock and limit the bracket 4, and at this time the bracket 4 can be removed. The whole process is not only convenient and fast for disassembly and assembly, but also very convenient for fixing the bracket 4, and the fixing effect is good, which can prevent the bracket 4 from displacing in any direction.

[0042] Further, as Figure 3 shown, there are two limiting blocks 2, and the angle formed by the tangent extension lines at the connection between the two limiting blocks 2 and the bracket 4 is 90°.

[0043] In this embodiment, two limit blocks 2 are selected. The two limit blocks 2 are located on either side of the bracket 4 and are symmetrically distributed with the diameter of the first limit hole 10 as the axis of symmetry. Two limit blocks 2 can improve the limiting effect of the bracket 4 on the tooling base 1. Compared with using a single limit block 2, due to the special structure of the bracket 4, when the eccentric wheel 16 locks the bracket 4, the bracket 4 will rotate around the locking position under the influence of the processing equipment. If there is only one limit block 2, it can only limit the rotation in one direction, either clockwise or counterclockwise, and cannot achieve simultaneous limitation in both directions. Therefore, the number of limit blocks 2 is selected to be two. Two limit blocks 2 can limit the rotation of the bracket 4 in the clockwise and counterclockwise directions in the lateral direction. In addition, the part where the bracket 4 and the limit block 2 contact is a curved surface. The tangent extension line is made at the part where the limit block 2 and the curved surface on the bracket 4 contact. The intersection of the tangent extension lines made on the two limit blocks 2 will form a 90° angle. At this angle, the two limit blocks 2 can have a good limiting effect on the bracket 4, preventing the bracket 4 from displacing in the lateral direction.

[0044] Further, such as Figure 5 As shown, the annular gasket 17 is provided with an annular fixing groove 170 along its own circumferential direction.

[0045] The annular fixing groove 170 is provided at the top of the annular gasket 17, that is, the end where the annular gasket 17 contacts the head of the fixing stud 15, and the central axis of the annular fixing groove 170 coincides with the central axis of the annular gasket 17. The annular fixing groove 170 is used to cooperate with the head of the fixing stud 15, so that the fixing stud 15 can lock the pressure plate 3 through the contacted annular gasket 17 during the tightening process, and achieve the locking of the bracket 4 in the vertical direction. Among them, the reason why the fixing stud 15 does not directly contact the pressure plate 3 for locking is to avoid the fixing stud 15 damaging the pressure plate 3 during the locking process. Therefore, compared with the damage of the pressure plate 3, the annular gasket 17 is specially selected. If the annular gasket 17 is damaged after long-term use, the replacement cost will be much lower than the replacement cost of the pressure plate 3, and the annular gasket 17 is also faster to disassemble and assemble than the pressure plate 3. In addition, the pressure plate 3 is also provided with a placement slot 31 adapted to fit the gasket 17. Since the diameter of the hole in the pressure plate 3 for the fixing stud 15 to pass through is larger than the diameter of the fixing stud 15, the pressure plate 3 may be displaced during the process of locking the bracket 4, thereby affecting the locking effect of the bracket 4. Therefore, the provision of the placement slot 31 can prevent the pressure plate 3 from being displaced after the fixing stud 15 is locked.

[0046] Further, such as Figure 5 As shown, an opening is formed on the side wall of the annular gasket 17 , and the diameter of the opening is equal to the diameter of the column of the fixing stud 15 .

[0047] In this embodiment, in order to facilitate the disassembly and assembly of the annular gasket 17 on the fixed stud 15, an opening is provided on the side wall of the annular gasket 17. The opening communicates with the hollowed-out part in the middle of the annular gasket 17 and also communicates with the annular fixing groove 170. The diameter of the opening is equal to the diameter of the column body of the fixed stud 15. When it is necessary to disassemble and assemble the annular gasket 17 on the fixed stud 15, the annular gasket 17 can be installed on the column body of the fixed stud 15 or removed from the column body of the fixed stud 15 through the opening. The purpose is that when the annular gasket 17 is damaged after being locked by the head of the fixed stud 15 on the pressing plate 3, the annular gasket 17 on the fixed stud 15 can be removed and replaced with a new one without removing the pressing plate 3, so as not to affect the processing efficiency of the ear of the bracket 4.

[0048] Further, as Figure 5 shown, a second limiting hole 11 is also provided on the tooling base 1. A second stud 14 is threadedly connected to the tooling base 1 through the second limiting hole 11. An arc-shaped groove 30 for abutting against the second stud 14 is provided on the outer wall of the pressing plate 3.

[0049] Among them, the connecting line between the center points of the second limiting hole 11 and the fixing hole 12 is perpendicular to the connecting line between the center points of the adjacent first limiting holes 10.

[0050] In this embodiment, the second limiting hole 11 is provided on the tooling base 1. The extension line of the connecting line between the center points of the second limiting hole 11 and the fixing hole 12 is perpendicular to the connecting line between the center points of the first limiting holes 10 adjacent to both ends of the pressing plate 3, and the second limiting hole 11 is located between the fixing hole 12 and the limiting block 2. The arc-shaped groove 30 is provided on the outer wall of the pressing plate 3 at the end facing the limiting block 2. When the tooling base 1 is threadedly connected with the second stud 14 through the second limiting hole 11, the side wall of the second stud 14 will contact the arc-shaped groove 30 provided on the outer wall of the pressing plate 3. The purpose is that when the ear on the bracket 4 is processed, the bracket 4 may rotate under the influence of the processing equipment. Therefore, the second stud 14 is provided to limit the rotation of the pressing plate 3 on the fixing hole 12 in the circumferential direction.

[0051] Further, as Figure 3 shown, a groove 18 is provided on the tooling base 1 along its own length direction.

[0052] In this embodiment, a groove 18 is provided on the tooling base 1 along its own length direction. The groove 18 makes the two opposite side walls perpendicular to the length direction of the tooling base 1 communicate. The provision of the groove 18 enables the bracket 4 to fit closer to the tooling base 1 at both ends of the groove 18 and be pressed more firmly by the pressing plate 3 when the pressing plate 3 presses the bracket 4.

[0053] Furthermore, as Figure 3 shown, there is a gap between adjacent brackets 4 between the adjacent pressing plates 3.

[0054] In this embodiment, there is a gap between two adjacent brackets 4 located between adjacent pressing plates 3. This gap enables the adjacent pressing plates 3 not to affect each other, so as to prevent the lug on one bracket 4 from affecting the adjacent bracket 4 during the processing. However, the gap should not be too large to avoid occupying the position of the bracket 4 and resulting in more unusable space on the tooling base 1, that is, while saving material costs, rationally utilizing the space on the tooling base 1.

[0055] Furthermore, as Figure 2 shown, the tooling base 1 is provided with a plurality of positioning holes 19.

[0056] In this embodiment, there are two positioning holes 19 provided on the tooling base 1, which are respectively located at both ends of the tooling base 1 and are used for positioning the point slots on the machining center workbench, so that the X-axis coordinate values are always the same each time the staff installs the tooling base 1.

[0057] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Without conflict, the embodiments of this application and the features in the embodiments can be arbitrarily combined with each other. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A tooling for milling the bracket lug, characterized in that Including: A tooling base, on which one or more first limiting holes and fixing holes are respectively formed; a first stud, the first stud is threadedly connected to the tooling base through the first limiting hole, and an eccentric wheel is provided on the outer wall of the first stud, and the central axis of the eccentric wheel does not coincide with the central axis of the first stud; a fixing stud, the fixing stud is threadedly connected to the tooling base through the fixing hole, and a pressing plate for fixing the bracket is sleeved on the fixing stud; an annular gasket is provided between the head of the fixing stud and the pressing plate; a limiting block, the limiting block is arranged on the tooling base for limiting the bracket; wherein, when both the first limiting hole and the fixing hole are multiple, the connecting line of the center points of the multiple first limiting holes is a straight line, and the number of the first limiting holes is equal to twice the number of the fixing holes.

2. The tooling for milling the bracket lug according to claim 1, wherein, There are two limiting blocks, and the angle formed by the tangent extension lines at the connection points of the two limiting blocks and the bracket is 90°.

3. The tooling for milling the bracket lug according to claim 2, characterized in that, The annular gasket is provided with an annular fixing groove along its circumferential direction.

4. The tooling for milling the support lug of the bracket according to claim 3, characterized in that, An opening is formed on the side wall of the annular gasket, and the diameter of the opening is equal to the column diameter of the fixing stud.

5. The tooling for milling the bracket lug according to claim 1 or 4, characterized in that, A second limiting hole is further formed on the tooling base, and a second stud is threadedly connected to the tooling base through the second limiting hole, and an arc-shaped groove for abutting against the second stud is formed on the outer wall of the pressing plate; wherein, the connecting line of the center point of the second limiting hole and the center point of the fixing hole is perpendicular to the connecting line between the center points of the adjacent first limiting holes.

6. The tooling for milling the bracket lug according to claim 5, characterized in that, A groove is formed on the tooling base along its length direction.

7. The tooling for milling the bracket lug according to claim 5, characterized in that, There is a gap between adjacent brackets between adjacent pressing plates.

8. The tooling for milling the bracket lug according to claim 5, characterized in that, The tooling base is provided with multiple positioning holes.

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