Positioning mechanism for processing special-shaped workpieces

Abstract

The present application relates to the technical field of special-shaped workpiece machining, and particularly relates to a positioning mechanism for special-shaped workpiece machining, which comprises a base, a special-shaped workpiece and two bases arranged side by side, the upper part of each of the two bases is provided with a lower clamping seat, the special-shaped workpiece is placed on the two lower clamping seats, one end of the base is further provided with a guide rail assembly, and the guide rail assembly is movably provided with an upper clamping assembly capable of ascending and descending; the positioning mechanism for special-shaped workpiece machining is provided with a side limiting mechanism arranged in cooperation, which is used for assisting in positioning the special-shaped workpiece, when the upper clamping assembly is driven by the driving mechanism to move downwards, the first linkage assembly synchronously drives the upper clamping seat to overturn to a horizontal state, when the special-shaped workpiece is clamped and fixed in cooperation with the lower clamping seat, the second linkage assembly synchronously drives the side limiting mechanism to transversely position the special-shaped workpiece, so that the special-shaped workpiece does not transversely deviate during numerical control machining, and the positioning precision is improved.

Description

Technical Field

[0001] This invention relates to the field of irregular workpiece processing technology, specifically to a positioning mechanism for irregular workpiece processing. Background Technology

[0002] In the profile manufacturing industry, precision machining is a crucial step in ensuring the performance of workpieces. Currently, workpiece processing in the market mainly relies on traditional manual clamps and mechanical positioning devices. However, these clamping methods have limitations. Due to their reliance on manual operation, operators need to manually adjust the clamping force and positioning accuracy, which is not only time-consuming and labor-intensive but also prone to poor clamping consistency due to human factors, thus affecting processing accuracy and production efficiency. In addition, traditional clamps are difficult to adapt to the processing requirements of irregularly shaped workpieces, making it difficult to consistently control the processing quality. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a positioning mechanism for machining irregularly shaped workpieces.

[0004] The present invention adopts the following technical solution: a positioning mechanism for processing irregular workpieces, including a base, an irregular workpiece, and two bases arranged side by side. Each of the two bases is provided with a lower clamping seat on its upper part. The irregular workpiece is placed on the two lower clamping seats. A guide rail assembly is also provided at one end of the base. An upper clamping assembly that can be raised and lowered is movably arranged in the guide rail assembly. An upper clamping seat is provided on the upper clamping assembly. A side limiting mechanism is also provided on the outer wall of the base.

[0005] The base is also provided with a first linkage component and a second linkage component. The base is provided with a driving mechanism for driving the upper clamping component to move up and down. When the driving mechanism drives the upper clamping component to move down, the first linkage component simultaneously drives the upper clamping seat to flip to a horizontal state, which cooperates with the lower clamping seat to clamp and fix the irregular workpiece. The second linkage component simultaneously drives the side limiting mechanism to perform lateral positioning of the irregular workpiece.

[0006] As a further description of the above technical solution: the guide rail assembly includes two parallel strip blocks, which are symmetrically welded to the two side walls of the base, and a first strip groove is formed on the opposite side of the two strip blocks in the vertical direction.

[0007] As a further description of the above technical solution: the upper clamping assembly includes a drive seat, a slider is welded to the side wall of the drive seat, the slider is slidably connected to the first strip groove, a rotating shaft is rotatably connected to the drive seat, mounting brackets are welded to both ends of the rotating shaft, the upper clamping seat is bolted to the mounting brackets, and a gear disk is welded to the middle section of the rotating shaft;

[0008] The driving mechanism is an electric telescopic rod, the bottom end of which is fixed on the base, and the top end of which is fixed on the drive seat.

[0009] As a further description of the above technical solution: the side limiting mechanism includes two limiting shafts, which are inserted into the side wall of the base, and both ends of the limiting shafts extend through the side wall of the base to the outside. A limiting block is welded and fixed between one end of the two limiting shafts, and a wedge-shaped transmission block is welded and fixed between the other ends of the two limiting shafts. A return spring is sleeved on the limiting shaft between the wedge-shaped transmission block and the base, and the wedge-shaped transmission block is located between the two bases.

[0010] As a further description of the above technical solution: the first linkage component includes a strip plate vertically welded to the base. A rectangular groove is formed on the front surface of the strip plate along the length direction. A toothed plate is movably arranged in the rectangular groove. A sliding seat is welded to the back of the toothed plate. A second strip-shaped sliding groove is formed on the bottom plate inside the rectangular groove along the length direction. The sliding seat is slidably connected to the second strip-shaped sliding groove. A limit spring is welded to the bottom end of the sliding seat. The bottom end of the limit spring is welded to the bottom plate inside the second strip-shaped sliding groove.

[0011] As a further description of the above technical solution: There are two electric telescopic rods, which are respectively mounted on two bases. The second linkage component includes a strip rod, the two ends of which are respectively fixed to the top outer wall of the two electric telescopic rods. The electric telescopic rods extend and retract, driving the strip rod to move up and down. A wedge-shaped drive block is installed at the middle position of the strip rod. A linkage block is slidably connected to the base at the center of the two bases.

[0012] As a further description of the above technical solution: one inclined end face of the linkage block is in contact with the inclined surface of the wedge-shaped drive block, and the inclined surfaces of the two side walls of the linkage block are in contact with the inclined surfaces of the wedge-shaped transmission block.

[0013] As a further description of the above technical solution: the irregular workpiece is composed of a base, a first protruding end, a second protruding end and a third protruding end. The first protruding end and the second protruding end are integrally formed at both ends of the irregular workpiece. The first protruding end and the second protruding end are on the same horizontal line. The third protruding end is integrally formed on the upper part of the base and is perpendicular to the first protruding end and the second protruding end.

[0014] As a further description of the above technical solution: there are two lower clamping seats, which are respectively clamped at the connection between the first protrusion and the second protrusion and the base. There are two upper clamping components, which cooperate with the two lower clamping seats to clamp and fix the irregular workpiece.

[0015] As a further description of the above technical solution: the outer ports of the first protruding end, the second protruding end, and the third protruding end are all provided with flanges.

[0016] Beneficial effects:

[0017] This invention provides a positioning mechanism for processing irregularly shaped workpieces. It features a flip-up upper clamping seat that works in conjunction with a lower clamping seat to clamp and fix the irregularly shaped workpiece. In the initial state, the upper clamping seat on the upper clamping assembly is flipped to an inclined position, not directly above the lower clamping seat, facilitating the placement of the irregularly shaped workpiece on the two lower clamping seats. During use, a drive mechanism drives the upper clamping assembly downwards, and a first linkage component simultaneously flips the upper clamping seat to a horizontal position, working in conjunction with the lower clamping seat to clamp and fix the irregularly shaped workpiece. This allows for simultaneous flipping and downward movement of the upper clamping seat, improving the efficiency of clamping and fixing irregularly shaped workpieces.

[0018] Furthermore, a side limiting mechanism is also provided to assist in the positioning of irregularly shaped workpieces. In use, when the drive mechanism drives the upper clamping assembly to move downward, the first linkage assembly simultaneously drives the upper clamping seat to flip to a horizontal state. When the lower clamping seat clamps and fixes the irregularly shaped workpiece, the second linkage assembly simultaneously drives the side limiting mechanism to perform lateral positioning of the irregularly shaped workpiece, so that the irregularly shaped workpiece will not shift laterally during CNC machining, thereby improving its positioning accuracy and ensuring its machining accuracy. Attached Figure Description

[0019] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0020] Figure 1 This is a schematic diagram of a positioning mechanism for machining irregularly shaped workpieces according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of the base provided in an embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the structure of the wedge-shaped transmission block provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the side limiting mechanism provided in an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the second linkage component provided in an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the upper clamping assembly provided in an embodiment of the present invention;

[0026] Figure 7A top view of the second linkage component provided in an embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the wedge-shaped drive block provided in an embodiment of the present invention;

[0028] Figure 9 A schematic diagram of the structure of the first linkage component provided in an embodiment of the present invention;

[0029] Figure 10 This is a schematic diagram of the toothed plate provided in an embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of the structure of an irregularly shaped workpiece provided in an embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of the structure of the wedge-shaped drive block and the linkage block provided in an embodiment of the present invention.

[0032] Reference numerals: 1. Base; 2. Base seat; 3. Lower clamping seat; 4. Side limiting mechanism; 41. Limiting shaft; 42. Limiting block; 43. Wedge-shaped transmission block; 44. Return spring; 5. Guide rail assembly; 51. Strip block; 52. First strip groove; 7. First linkage assembly; 71. Strip plate; 72. Rectangular groove; 73. Toothed plate; 74. Second strip groove; 75. Sliding seat; 76. Limiting spring; 8. Upper clamping assembly; 81. Drive seat; 82. Slider; 83. Electric telescopic rod; 84. Rotating shaft; 85. Gear disk; 86. Mounting bracket; 87. Upper clamping seat; 9. Second linkage assembly; 91. Strip rod; 92. Wedge-shaped drive block; 93. Linkage block; 10. Irregular workpiece; 101. Base; 102. First protruding end; 103. Second protruding end; 104. Third protruding end; 105. Flange. Detailed Implementation

[0033] To make the technical means, creative features, objectives, and effects of this invention readily understandable, the invention is further described below with reference to specific illustrations. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0034] Example 1

[0035] Please see Figures 1-3 and Figures 6-10The present invention provides a technical solution: a positioning mechanism for processing irregular workpieces, including a base 1, an irregular workpiece 10 and two bases 2 arranged in parallel. Each of the two bases 2 is provided with a lower clamping seat 3 on its upper part. The irregular workpiece 10 is placed on the two lower clamping seats 3. A guide rail assembly 5 is also provided at one end of the base 2. An upper clamping assembly 8 that can be raised and lowered is movably arranged in the guide rail assembly 5. An upper clamping seat 87 is provided on the upper clamping assembly 8. A side limiting mechanism 4 is also provided on the outer wall of the base 2.

[0036] The base 1 is also provided with a first linkage component 7 and a second linkage component 9. The base 2 is provided with a drive mechanism for driving the upper clamping component 8 to move up and down. When the drive mechanism drives the upper clamping component 8 to move down, the first linkage component 7 simultaneously drives the upper clamping seat 87 to flip to a horizontal state, which cooperates with the lower clamping seat 3 to clamp and fix the irregular workpiece 10. The second linkage component 9 simultaneously drives the side limiting mechanism 4 to perform lateral positioning of the irregular workpiece 10.

[0037] The guide rail assembly 5 includes two parallel strip blocks 51, which are symmetrically welded to the two side walls of the base 2. The opposite side of the two strip blocks 51 is provided with a first strip groove 52 in the vertical direction.

[0038] The upper clamping assembly 8 includes a drive base 81, a slider 82 welded to the side wall of the drive base 81, the slider 82 being slidably connected to the first strip groove 52, a rotating shaft 84 rotatably connected to the drive base 81, mounting brackets 86 welded to both ends of the rotating shaft 84, an upper clamping seat 87 bolted to the mounting brackets 86, and a gear disk 85 welded to the middle section of the rotating shaft 84; the driving mechanism is an electric telescopic rod 83, the bottom end of the electric telescopic rod 83 is mounted and fixed on the base 2, and the top end of the electric telescopic rod 83 is fixed on the drive base 81.

[0039] The first linkage component 7 includes a strip plate 71 vertically welded to the base 2. A rectangular groove 72 is formed on the front surface of the strip plate 71 along the length direction. A toothed plate 73 is movably arranged in the rectangular groove 72. A sliding seat 75 is welded to the back of the toothed plate 73. A second strip groove 74 is formed on the bottom plate inside the rectangular groove 72 along the length direction. The sliding seat 75 is slidably connected to the second strip groove 74. A limit spring 76 is welded to the bottom end of the sliding seat 75. The bottom end of the limit spring 76 is welded to the bottom plate inside the second strip groove 74.

[0040] Specifically, in this embodiment, during use, in the initial state, such as Figure 2The upper clamping seat 87 on the upper clamping assembly 8 is flipped into an inclined state and is not located directly above the lower clamping seat 3, which makes it convenient to place the irregular workpiece 10 on the two lower clamping seats 3. In use, the upper clamping assembly 8 is driven to move downward by the drive mechanism, and the first linkage assembly 7 simultaneously drives the upper clamping seat 87 to flip into a horizontal state, which works with the lower clamping seat 3 to clamp and fix the irregular workpiece 10. Thus, the flipping and downward movement of the upper clamping seat 87 are completed simultaneously, improving its efficiency in clamping and fixing the irregular workpiece 10.

[0041] The upper clamping assembly 8 is driven downward by the drive mechanism, and the first linkage assembly 7 simultaneously drives the upper clamping seat 87 to flip to a horizontal state, thus cooperating with the lower clamping seat 3 to clamp and fix the irregular workpiece 10. The specific working method is as follows: In use, the drive mechanism is an electric telescopic rod 83. Controlling the electric telescopic rod 83 to retract drives the drive seat 81 to move downward within the guide rail assembly 5. When the drive seat 81 moves downward, it drives the gear disk 85 to walk on the toothed plate 73, causing the gear disk 85 to rotate. The gear disk 85 drives the upper clamping seat 87 to flip to a horizontal state. At this time, the upper clamping seat 87 cannot rotate due to the obstruction of the drive seat 81, causing the gear disk 85 to drive the toothed plate 73 to move downward, causing the limit spring 76 to contract. Thus, the drive mechanism drives the upper clamping assembly 8 to move downward, and the first linkage assembly 7 simultaneously drives the upper clamping seat 87 to flip to a horizontal state, thus cooperating with the lower clamping seat 3 to clamp and fix the irregular workpiece 10.

[0042] Example 2

[0043] Please see Figures 2-6 , Figures 7-8 , Figures 11-12 This embodiment adds a side limiting mechanism 4 based on the above embodiment;

[0044] The side limiting mechanism 4 includes two limiting shafts 41, which are inserted into the side wall of the base 2. Both ends of the limiting shafts 41 extend through the side wall of the base 2 to the outside. A limiting block 42 is welded and fixed between one end of the two limiting shafts 41, and a wedge-shaped transmission block 43 is welded and fixed between the other ends of the two limiting shafts 41. A return spring 44 is sleeved on the limiting shaft 41 between the wedge-shaped transmission block 43 and the base 2. The wedge-shaped transmission block 43 is located between the two bases 2.

[0045] There are two electric telescopic rods 83, which are respectively mounted on two bases 2. The second linkage component 9 includes a strip rod 91, the two ends of which are fixed to the top outer wall of the two electric telescopic rods 83. The electric telescopic rods 83 extend and retract, driving the strip rod 91 to move up and down. A wedge-shaped drive block 92 is installed in the middle of the strip rod 91. A linkage block 93 is slidably connected to the base 1 at the center of the two bases 2.

[0046] One inclined end face of the linkage block 93 is in contact with the inclined surface of the wedge-shaped drive block 92, and the inclined surfaces of the two side walls of the linkage block 93 are in contact with the inclined surfaces of the wedge-shaped transmission block 43. The irregular workpiece 10 is composed of a base 101, a first protruding end 102, a second protruding end 103, and a third protruding end 104. The outer ports of the first protruding end 102, the second protruding end 103, and the third protruding end 104 are all provided with flanges 105.

[0047] Specifically, in this embodiment, by setting the side limiting mechanism 4, the two limiting blocks 42 on the side limiting mechanism 4 abut against the flange 105 set on the outer port of the first protruding end 102 and the second protruding end 103, thereby realizing the horizontal limiting of the irregular workpiece 10 and improving the accuracy of the positioning and fixing of the irregular workpiece 10.

[0048] When the drive mechanism drives the upper clamping assembly 8 to move downward, the second linkage assembly 9 synchronously drives the side limiting mechanism 4 to perform lateral positioning of the irregular workpiece 10. The specific process is as follows: When the electric telescopic rod 83 is retracted, the drive seat 81 moves downward within the guide rail assembly 5. When the electric telescopic rod 83 retracts, the strip rod 91 moves downward synchronously. The downward movement of the strip rod 91 drives the wedge drive block 92 to move downward. The wedge drive block 92, through the linkage block 93, drives the two wedge transmission blocks 43 to move closer to the base 2 respectively. The reset spring 44 retracts, thereby driving the two limiting blocks 42 to abut against the flange 105 set on the outer port of the first protruding end 102 and the second protruding end 103, thereby achieving horizontal limiting of the irregular workpiece 10.

[0049] Example 3

[0050] Please see Figure 1 and Figure 11 Based on the above embodiments, this embodiment specifically discloses the structural composition of the irregular workpiece 10, and the specific clamping positions of the irregular workpiece 10 by the two upper clamping components 8 and the two lower clamping seats 3.

[0051] The irregular workpiece 10 is composed of a base 101, a first protruding end 102, a second protruding end 103 and a third protruding end 104. The first protruding end 102 and the second protruding end 103 are integrally formed at both ends of the irregular workpiece 10. The first protruding end 102 and the second protruding end 103 are on the same horizontal line. The third protruding end 104 is integrally formed on the upper part of the base 101 and is arranged perpendicular to the first protruding end 102 and the second protruding end 103.

[0052] There are two lower clamping seats 3, which are respectively clamped at the connection between the first protruding end 102 and the second protruding end 103 and the base 101. There are two upper clamping components 8, which work together with the two lower clamping seats 3 to clamp and fix the irregular workpiece 10.

[0053] In this embodiment, the clamping position is set at the connection between the first protruding end 102 and the second protruding end 103 and the base 101, which can completely expose the first protruding end 102, the second protruding end 103, the third protruding end 104 and the upper part of the base 101, which facilitates the assembly of the interior of the base 101 and the processing of the flange 105 on the first protruding end 102, the second protruding end 103 and the third protruding end 104.

[0054] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A positioning mechanism for machining irregularly shaped workpieces, characterized in that, The device includes a base (1), a shaped workpiece (10), and two bases (2) arranged side by side. Each base (2) has a lower clamping seat (3) on its upper part. The shaped workpiece (10) is placed on the two lower clamping seats (3). One end of the base (2) is also provided with a guide rail assembly (5). An upper clamping assembly (8) that can be raised and lowered is movably arranged inside the guide rail assembly (5). An upper clamping seat (87) is provided on the upper clamping assembly (8). A side limiting mechanism (4) is also provided on the outer wall of the base (2). The base (1) is also provided with a first linkage component (7) and a second linkage component (9). The base (2) is provided with a driving mechanism for driving the upper clamping component (8) to move up and down. When the driving mechanism drives the upper clamping component (8) to move down, the first linkage component (7) simultaneously drives the upper clamping seat (87) to flip to a horizontal state, and cooperates with the lower clamping seat (3) to clamp and fix the irregular workpiece (10). The second linkage component (9) simultaneously drives the side limiting mechanism (4) to perform lateral positioning of the irregular workpiece (10).

2. The positioning mechanism for machining irregularly shaped workpieces according to claim 1, characterized in that, The guide rail assembly (5) includes two parallel strip blocks (51), which are symmetrically welded to the two side walls of the base (2). The opposite side of the two strip blocks (51) is provided with a first strip groove (52) in the vertical direction.

3. The positioning mechanism for machining irregularly shaped workpieces according to claim 2, characterized in that, The upper clamping assembly (8) includes a drive seat (81), a slider (82) is welded to the side wall of the drive seat (81), the slider (82) is slidably connected to the first strip groove (52), a rotating shaft (84) is rotatably connected to the drive seat (81), mounting brackets (86) are welded to both ends of the rotating shaft (84), the upper clamping seat (87) is bolted to the mounting bracket (86), and a gear disk (85) is welded to the middle section of the rotating shaft (84). The driving mechanism is an electric telescopic rod (83), the bottom end of which is fixed on the base (2), and the top end of which is fixed on the drive seat (81).

4. The positioning mechanism for machining irregularly shaped workpieces according to claim 3, characterized in that, The side limiting mechanism (4) includes two limiting shafts (41). The limiting shafts (41) are inserted into the side wall of the base (2), and both ends of the limiting shafts (41) extend through the side wall of the base (2) to the outside. A limiting block (42) is welded and fixed between one end of the two limiting shafts (41), and a wedge-shaped transmission block (43) is welded and fixed between the other ends of the two limiting shafts (41). A reset spring (44) is sleeved on the limiting shaft (41) between the wedge-shaped transmission block (43) and the base (2). The wedge-shaped transmission block (43) is located between the two bases (2).

5. A positioning mechanism for machining irregularly shaped workpieces according to claim 1, characterized in that, The first linkage component (7) includes a strip plate (71) vertically welded to the base (2). A rectangular groove (72) is provided on the front surface of the strip plate (71) along the length direction. A toothed plate (73) is movably arranged in the rectangular groove (72). A sliding seat (75) is welded to the back of the toothed plate (73). A second strip groove (74) is provided on the bottom plate inside the rectangular groove (72) along the length direction. The sliding seat (75) is slidably connected to the second strip groove (74). A limit spring (76) is welded to the bottom end of the sliding seat (75). The bottom end of the limit spring (76) is welded to the bottom plate inside the second strip groove (74).

6. A positioning mechanism for machining irregularly shaped workpieces according to claim 4, characterized in that, Two electric telescopic rods (83) are provided. The two electric telescopic rods (83) are respectively set on two bases (2). The second linkage component (9) includes a strip rod (91). The two ends of the strip rod (91) are respectively fixed on the top outer wall of the two electric telescopic rods (83). The electric telescopic rods (83) extend and retract, driving the strip rod (91) to move up and down. A wedge-shaped drive block (92) is installed at the middle position of the strip rod (91). A linkage block (93) is slidably connected to the base (1) at the center of the two bases (2).

7. A positioning mechanism for machining irregularly shaped workpieces according to claim 6, characterized in that, One inclined end face of the linkage block (93) is in contact with the inclined surface of the wedge-shaped drive block (92), and the inclined surfaces of the two side walls of the linkage block (93) are in contact with the inclined surfaces of the wedge-shaped transmission block (43).

8. A positioning mechanism for machining irregularly shaped workpieces according to claim 1, characterized in that, The irregular workpiece (10) is composed of a base (101), a first protruding end (102), a second protruding end (103) and a third protruding end (104). The first protruding end (102) and the second protruding end (103) are integrally formed on both ends of the irregular workpiece (10). The first protruding end (102) and the second protruding end (103) are on the same horizontal line. The third protruding end (104) is integrally formed on the upper part of the base (101) and is perpendicular to the first protruding end (102) and the second protruding end (103).

9. A positioning mechanism for machining irregularly shaped workpieces according to claim 8, characterized in that, There are two lower clamping seats (3). The two lower clamping seats (3) are respectively clamped at the connection between the first protruding end (102) and the second protruding end (103) and the base (101). There are two upper clamping components (8). The two upper clamping components (8) cooperate with the two lower clamping seats (3) to clamp and fix the irregular workpiece (10).

10. A positioning mechanism for machining irregularly shaped workpieces according to claim 8, characterized in that, The outer ports of the first protruding end (102), the second protruding end (103) and the third protruding end (104) are all provided with flanges (105).

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