Milling clamp for special-shaped workpiece

Abstract

The utility model discloses a milling fixture for a special-shaped workpiece, the special-shaped workpiece is provided with a limiting bulge and a limiting hole, the milling fixture comprises a first limiting plate, a second limiting plate, a third limiting plate and a fourth limiting plate, the first limiting plate is provided with a limiting notch, and the limiting bulge can extend into the limiting notch; the limiting column can extend into the limiting hole; and the locking column can be connected to the special-shaped workpiece in an abutting mode. In the utility model, the limiting bulge extends into the limiting notch to lock the height of one end of the special-shaped workpiece, and the limiting column extends into the limiting hole to lock the height of the other end of the special-shaped workpiece, so that the heights of the two ends of the special-shaped workpiece are consistent, the workpiece is prevented from inclining leftwards and rightwards, the processing of the uppermost plane is more facilitated, and the processing precision is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamps, in particular to a milling clamp for special-shaped workpieces. Background Art

[0002] Existing clamps all clamp or release the workpiece by moving a plurality of clamp arms closer to or farther from each other.

[0003] However, these fixtures only have the functions of clamping and rough positioning, and cannot achieve precise positioning of the workpiece, especially for the clamping of special-shaped workpieces. Due to the irregular shape of the workpiece, it is difficult to achieve stable clamping and precise positioning. When the workpiece is not accurately positioned, there will be errors in the processed holes and surfaces. Summary of the invention

[0004] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to propose a milling fixture for special-shaped workpieces, which is used to solve the problem that the fixture in the prior art cannot achieve precise positioning, resulting in errors in the processed holes and surfaces.

[0005] The technical solution adopted by the utility model to solve the technical problem is a milling fixture for a special-shaped workpiece, the special-shaped workpiece has a first mounting portion and a second mounting portion, the first mounting portion is provided with a limiting protrusion, the second mounting hole is provided with a limiting hole, and the milling fixture includes:

[0006] A first limiting assembly, wherein the first limiting assembly comprises a first limiting plate, a limiting notch is formed on the first limiting plate, and the limiting protrusion can extend into the limiting notch along a first direction;

[0007] A second limiting assembly connected to the first limiting assembly, the second limiting assembly comprising a limiting column, the limiting column can extend into the limiting hole along the second direction, the limiting column has at least two abutting portions, and the two abutting portions respectively abut against the inner wall of the limiting hole;

[0008] A third limiting assembly is connected to the second limiting assembly, and the third limiting assembly includes a locking column, which is located on the side of the limiting column away from the first limiting plate, and the locking column can move along the first direction to abut against the special-shaped workpiece; the second direction is perpendicular to the first direction.

[0009] Further, the limiting column comprises a first limiting section, a second limiting section and a third limiting section which are connected in sequence, and the radius of the second limiting section is smaller than the radius of the first limiting section, so as to form a first step surface at the connection between the first limiting section and the second limiting section;

[0010] The limiting hole includes a first connecting section, a second connecting section and a third connecting section which are connected in sequence, and the radius of the second connecting section is smaller than the radius of the third connecting section, so as to form a second step surface at the connection between the first connecting section and the second connecting section, and the second step surface can be offset against the first step surface.

[0011] Further, at least two of the abutting portions are arranged in the third limiting section, the abutting portions can abut against the inner wall of the second connecting section, and the distance between the two abutting portions is smaller than the diameter of the second connecting section.

[0012] Furthermore, the abutting portion is arranged in an arc shape.

[0013] Furthermore, the second limiting assembly further includes a locking block, and the locking block can extend into the third connecting section and be connected to the third limiting section.

[0014] Further, the radius of the third connecting segment is greater than the radius of the second connecting segment, so as to form a third step surface at the connection between the second connecting segment and the third connecting segment;

[0015] One end of the locking block can extend into the third connecting section and abut against the third step surface.

[0016] Furthermore, the limiting protrusion is provided in a cylindrical shape, the limiting notch is provided in an arcuate shape, and the side wall of the limiting protrusion can abut against the inner wall of the limiting notch.

[0017] Furthermore, the first mounting portion is further provided with a limiting surface, the limiting surface protrudes outward to form the limiting protrusion, and the limiting protrusion can extend into the limiting notch and make the limiting surface abut against the first limiting plate.

[0018] Furthermore, the second limiting assembly also includes a second limiting plate, the second limiting plate is fixedly connected to the first limiting plate, and the limiting column is fixedly connected to the second limiting plate.

[0019] Furthermore, the third limiting assembly also includes a third limiting plate, the third limiting plate is fixedly connected to an end of the second limiting plate away from the first limiting plate, and the locking column is threadedly connected to the third limiting plate.

[0020] Compared with the prior art, the utility model has at least the following beneficial effects:

[0021] The limiting protrusion in the first limiting component extends into the limiting notch to lock the height of one end of the special-shaped workpiece, and the limiting column in the second limiting component extends into the limiting hole to lock the height of the other end of the special-shaped workpiece, so that the heights of the two ends of the special-shaped workpiece are consistent, avoiding the workpiece from tilting left and right, which is more conducive to processing the top plane and improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a milling fixture and a workpiece in an embodiment;

[0023] Figure 2 It is a structural schematic diagram of the milling fixture in the embodiment;

[0024] Figure 3 It is a schematic diagram of the structure of the limiting column in the embodiment;

[0025] Figure 4 A schematic structural diagram of a workpiece from one perspective in an embodiment;

[0026] Figure 5 A schematic structural diagram of a workpiece from another perspective in the embodiment;

[0027] In the figure:

[0028] 100, first limiting assembly; 110, first limiting plate; 120, limiting notch;

[0029] 200, second limiting assembly; 210, second limiting plate; 220, locking block; 230, limiting column; 231, first limiting section; 232, second limiting section; 233, third limiting section; 2331, abutting portion; 234, first step surface;

[0030] 300, third limiting assembly; 310, locking column; 320, third limiting plate;

[0031] 400, workpiece; 410, limiting hole; 411, first connecting section; 412, second connecting section; 413, third connecting section; 414, second step surface; 415, third step surface; 420, limiting protrusion; 430, limiting surface. DETAILED DESCRIPTION

[0032] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0033] Please refer to Figure 1-Figure 5 The utility model discloses a milling fixture for a special-shaped workpiece, wherein the special-shaped workpiece 400 has a first mounting portion and a second mounting portion, wherein the first mounting portion is provided with a limiting protrusion 420, and the second mounting hole is provided with a limiting hole 410, and the milling fixture comprises:

[0034] A first limiting assembly 100, wherein the first limiting assembly 100 comprises a first limiting plate 110, wherein a limiting notch 120 is formed on the first limiting plate 110, and the limiting protrusion 420 can extend into the limiting notch 120 along a first direction;

[0035] A second limiting assembly 200 is connected to the first limiting assembly 100. The second limiting assembly 200 includes a limiting column 230. The limiting column 230 can extend into the limiting hole 410 along the second direction. The limiting column 230 has at least two abutting portions 2331. The two abutting portions 2331 abut against the inner wall of the limiting hole 410 respectively.

[0036] The third limiting assembly 300 is connected to the second limiting assembly 200, and the third limiting assembly 300 includes a locking column 310. The locking column 310 is located on the side of the limiting column 230 away from the first limiting plate 110, and the locking column 310 can move along the first direction to abut against the special-shaped workpiece 400; the second direction is perpendicular to the first direction.

[0037] It should be noted that the first direction is perpendicular to the second direction. The first direction can be understood as the length direction of the workpiece 400, and the second direction is the width direction.

[0038] By extending the limiting protrusion 420 at one end of the special-shaped workpiece 400 into the limiting notch 120, the position of the special-shaped workpiece 400 in the height direction and the width direction can be locked, and then the locking column 310 is pressed against the other end of the special-shaped workpiece 400 to lock the position of the special-shaped workpiece 400 in the length direction, thereby locking the position of the entire special-shaped workpiece 400.

[0039] Since the application needs to process the topmost plane of the special-shaped workpiece 400, the entire special-shaped workpiece 400 needs to be placed horizontally, and the required precision is higher. Based on this, the application also sets a second limiting component 200, through the limiting column 230 extending into the limiting hole 410, so that at least two abutting portions 2331 on the limiting column 230 abut against the inner wall of the limiting hole 410 at the same time to achieve limiting. In general, the limiting protrusion 420 in the first limiting component 100 extends into the limiting notch 120, which can lock the height of one end of the special-shaped workpiece 400, and the limiting column 230 in the second limiting component 200 extends into the limiting hole 410, which can lock the height of the other end of the special-shaped workpiece 400, so that the heights of the two ends of the special-shaped workpiece 400 are consistent, avoiding the workpiece 400 from tilting left and right, which is more conducive to processing the topmost plane and improving the processing precision.

[0040] Further, the limiting column 230 includes a first limiting section 231, a second limiting section 232 and a third limiting section 233 which are connected in sequence, and the radius of the second limiting section 232 is smaller than the radius of the first limiting section 231, so as to form a first step surface 234 at the connection between the first limiting section 231 and the second limiting section 232;

[0041] The limiting hole 410 includes a first connecting section 411, a second connecting section 412 and a third connecting section 413 which are connected in sequence, and the radius of the second connecting section 412 is smaller than the radius of the third connecting section 413, so as to form a second step surface 414 at the connection between the first connecting section 411 and the second connecting section 412, and the second step surface 414 can be offset against the first step surface 234.

[0042] Specifically, the first step surface 234 and the second step surface 414 abut against each other, which can lock the position of one end of the special-shaped workpiece 400 in the width direction, and the limiting protrusion 420 extends into the limiting notch 120 and abuts against the inner wall of the limiting notch 120, which can lock the position of the other end of the special-shaped workpiece 400 in the width direction.

[0043] Furthermore, at least two abutting portions 2331 are disposed in the third limiting section 233 , and the abutting portions 2331 can abut against an inner wall of the second connecting section 412 , and a distance between the two abutting portions 2331 is smaller than a diameter of the second connecting section 412 .

[0044] Specifically, since the distance between the two abutment portions 2331 is smaller than the diameter of the second connecting section 412, when the limiting column 230 extends into the limiting hole 410, the special-shaped workpiece 400 can move laterally relative to the limiting column 230, thereby enabling the locking column 310 on the far right of the special-shaped workpiece 400 to push the entire special-shaped workpiece 400 to move to the left until the limiting protrusion 420 is fully extended into the limiting notch 120, and at the same time, the two abutment portions 2331 abut against the inner wall of the limiting hole 410 at the same time.

[0045] It should be noted that, since the distance between the two abutting portions 2331 is smaller than the diameter of the limiting hole 410 , the two abutting portions 2331 will not abut against the highest and lowest points of the limiting hole 410 at the same time, but will abut against the positions in the right half area at the same time.

[0046] Furthermore, the abutting portion 2331 is configured in an arc shape.

[0047] The abutting portion 2331 is configured as an arc surface, so as to increase the contact area between the abutting portion 2331 and the limiting hole 410 , thereby preventing the abutting portion 2331 from scratching the inner wall of the limiting hole 410 and improving the clamping stability.

[0048] Furthermore, the second limiting assembly 200 further includes a locking block 220 , and the locking block 220 can extend into the third connecting section 413 and be connected to the third limiting section 233 .

[0049] The radius of the third connecting section 413 is greater than the radius of the second connecting section 412, so as to form a third step surface 415 at the connection between the second connecting section 412 and the third connecting section 413;

[0050] One end of the locking block 220 can extend into the third connecting section 413 and abut against the third step surface 415 .

[0051] A locking block 220 is provided at the other end of the limiting hole 410 and is connected to the limiting column 230 to prevent the limiting column 230 from being separated from the limiting hole 410, thereby enhancing the locking stability.

[0052] Furthermore, the limiting protrusion 420 is provided in a cylindrical shape, the limiting notch 120 is provided in an arc shape, and the side wall of the limiting protrusion 420 can abut against the inner wall of the limiting notch 120 .

[0053] Furthermore, the first mounting portion is further provided with a limiting surface 430 , and the limiting surface 430 protrudes outward to form the limiting protrusion 420 . The limiting protrusion 420 can extend into the limiting notch 120 and make the limiting surface 430 abut against the first limiting plate 110 .

[0054] Furthermore, the second limiting assembly 200 further includes a second limiting plate 210 , the second limiting plate 210 is fixedly connected to the first limiting plate 110 , and the limiting column 230 is fixedly connected to the second limiting plate 210 .

[0055] Furthermore, the third limiting assembly 300 further includes a third limiting plate 320 , which is fixed to an end of the second limiting plate 210 away from the first limiting plate 110 , and the locking column 310 is threadedly connected to the third limiting plate 320 .

[0056] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0057] In addition, in the present invention, the descriptions of "first", "second", "one", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0058] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0059] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

Claims

1. A milling fixture for a special-shaped workpiece, the special-shaped workpiece having a first mounting portion and a second mounting portion, the first mounting portion having a limiting protrusion, and the second mounting portion having a limiting hole, characterized in that: The milling fixture comprises: A first limiting assembly, wherein the first limiting assembly comprises a first limiting plate, a limiting notch is formed on the first limiting plate, and the limiting protrusion can extend into the limiting notch along a first direction; A second limiting assembly is connected to the first limiting assembly, the second limiting assembly comprises a limiting column, the limiting column can extend into the limiting hole along the second direction, the limiting column has at least two abutting portions, and the two abutting portions abut against the inner wall of the limiting hole respectively; A third limiting assembly is connected to the second limiting assembly, and the third limiting assembly includes a locking column, which is located on the side of the limiting column away from the first limiting plate, and the locking column can move along the first direction to abut against the special-shaped workpiece; the second direction is perpendicular to the first direction.

2. A milling fixture for special-shaped workpieces according to claim 1, characterized in that: The limiting column comprises a first limiting section, a second limiting section and a third limiting section which are connected in sequence, wherein the radius of the second limiting section is smaller than the radius of the first limiting section, so as to form a first step surface at the connection between the first limiting section and the second limiting section; The limiting hole includes a first connecting section, a second connecting section and a third connecting section which are connected in sequence, and the radius of the second connecting section is smaller than the radius of the third connecting section, so as to form a second step surface at the connection between the first connecting section and the second connecting section, and the second step surface can be offset against the first step surface.

3. A milling fixture for special-shaped workpieces according to claim 2, characterized in that: At least two of the abutting portions are arranged in the third limiting section, and the abutting portions can abut against the inner wall of the second connecting section, and the distance between the two abutting portions is smaller than the diameter of the second connecting section.

4. A milling fixture for special-shaped workpieces according to claim 1, characterized in that: The abutting portion is arranged in an arc shape.

5. A milling fixture for special-shaped workpieces according to claim 2, characterized in that: The second limiting assembly further includes a locking block, which can extend into the third connecting section and be connected to the third limiting section.

6. A milling fixture for special-shaped workpieces according to claim 5, characterized in that: The radius of the third connecting segment is greater than the radius of the second connecting segment, so as to form a third step surface at the connection between the second connecting segment and the third connecting segment; One end of the locking block can extend into the third connecting section and abut against the third step surface.

7. A milling fixture for special-shaped workpieces according to claim 1, characterized in that: The limiting protrusion is provided in a cylindrical shape, the limiting notch is provided in an arcuate shape, and the side wall of the limiting protrusion can abut against the inner wall of the limiting notch.

8. The milling fixture for special-shaped workpieces according to claim 1, characterized in that: The first mounting portion is further provided with a limiting surface, which protrudes outward to form the limiting protrusion. The limiting protrusion can extend into the limiting notch and make the limiting surface abut against the first limiting plate.

9. A milling fixture for special-shaped workpieces according to claim 1, characterized in that: The second limiting assembly further includes a second limiting plate, the second limiting plate is fixedly connected to the first limiting plate, and the limiting column is fixedly connected to the second limiting plate.

10. A milling fixture for special-shaped workpieces according to claim 9, characterized in that: The third limiting assembly further includes a third limiting plate, the third limiting plate is fixedly connected to an end of the second limiting plate away from the first limiting plate, and the locking column is threadedly connected to the third limiting plate.

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