Processing center clamp with positioning function

Abstract

The utility model discloses a machining center clamp with positioning function relates to machining center clamp technical field, this machining center clamp with positioning function includes installation mesa, and the installation mesa is installed with outer ring clamping positioning mechanism and gantry frame respectively on, the outer ring clamping positioning mechanism is located in the inside of gantry frame, the inner ring bracing positioning mechanism is fixedly installed on the upper end of gantry frame, the utility model discloses, when using, the outer ring clamping positioning mechanism forms the primary positioner to workpiece outer ring through annular positioning groove, and the radial tightening force of cooperation clamping drive piece can complete clamping positioning to workpiece outer ring, and the bracing plate seat of inner ring bracing positioning mechanism is annular array distribution, can provide even radial support force from workpiece inner ring, and forms reverse balance with outer ring clamping force, and this bidirectional constraint structure can effectively offset the radial and axial force produced in the cutting process, realizes double positioning precision guarantee.

Description

Technical Field

[0001] This utility model specifically relates to the field of machining center fixture technology, and more specifically to a machining center fixture with positioning function. Background Technology

[0002] In modern machining, the positioning accuracy and stability of machining center fixtures directly affect workpiece machining quality and production efficiency. With the increasing demand for high-precision components, traditional fixtures often face problems such as large positioning deviations, uneven clamping force, and poor adaptability. For example, in machining circular or ring-shaped workpieces, a single outer ring clamping or inner ring support method can easily lead to workpiece deformation. Especially for thin-walled or irregularly shaped parts, excessive clamping can cause elastic deformation, affecting the final dimensional accuracy. Insufficient rigidity of the positioning mechanism can generate vibration during high-speed cutting, reducing the surface finish of the machined parts.

[0003] Meanwhile, the adjustment process of traditional fixtures is cumbersome, requiring multiple manual calibrations, making it difficult to adapt to the flexible production needs of multiple varieties and small batches. In addition, the insufficient repeatability of the workpiece after clamping leads to poor processing consistency of products in the same batch, increasing subsequent inspection and rework costs. Utility Model Content

[0004] The purpose of this utility model is to provide a machining center fixture with positioning function. By installing the inner ring clamping positioning mechanism, the gantry frame and the outer ring clamping positioning mechanism with the mounting table, the adaptability, structural stability and operation convenience of the machining center fixture are improved, and it also has dual positioning; thus solving the technical problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A machining center fixture with positioning function, including The mounting platform is equipped with an outer ring clamping and positioning mechanism and a gantry frame; the outer ring clamping and positioning mechanism is located inside the gantry frame; and an inner ring support and positioning mechanism is fixedly installed at the upper end of the gantry frame. The inner ring support and positioning mechanism includes a double-outlet drive cylinder, which is fixedly installed on the upper surface of the connecting seat. The connecting seat has a mounting through groove at the center. The lower end of the double-outlet drive cylinder is fixedly connected to the ear plate. Three sets of ear seats are fixedly installed on the lower surface of the ear plate. Each of the three sets of ear seats is rotatably connected to a joint linkage rod, which is arranged in an inverted L-shape. Three sets of connecting seat ears are fixedly installed on the lower surface of the connecting seat. The connecting seat ears are rotatably connected to the corner of the joint linkage rod. The other end of the joint linkage rod is rotatably connected to the support plate seat. An auxiliary linkage rod is also rotatably connected to the support plate seat. The auxiliary linkage rod is rotatably connected to the connecting seat ears.

[0006] As a further technical solution of this utility model, three sets of telescopic guide rods are fixedly installed on the upper surface of the connecting seat, and the upper ends of the telescopic guide rods are all fixedly connected to the lower surface of the top mounting plate; and anti-slip pads are fixedly installed on the tensioning plate seat.

[0007] As a further technical solution of this utility model, the center position of the lower surface of the top mounting plate is fixedly connected to the upper end of the double-outlet drive cylinder, and columns are fixedly installed at the four corners of the lower surface of the top mounting plate, and positioning sliders are threadedly connected to the lower end of each column.

[0008] As a further technical solution of this utility model, the multiple positioning sliders are all connected to the inverted T-shaped guide grooves, which are symmetrically arranged on the inner side of the base platform; the symmetrically arranged inverted T-shaped guide grooves are also connected to the positioning sliders, and the four positioning sliders are threadedly connected to the inner side of the lower end of the positioning base plate.

[0009] As a further technical solution of this utility model, the upper inner side of the positioning base plate is provided with an annular positioning groove, and a central sliding shaft is fixedly installed at the center of the inner side of the positioning base plate. Multiple springs are installed in an annular array at the lower end of the central sliding shaft seat.

[0010] As a further technical solution of this utility model, a threaded rod is fixedly installed on the upper end of the central sliding shaft, the threaded rod is threadedly connected to the adjusting nut, the lower end of the adjusting nut is provided with a sliding cylinder seat, the sliding cylinder seat is slidably connected to the central sliding shaft, and the lower end of the central sliding shaft is connected to the upper ends of multiple springs arranged in a ring array.

[0011] As a further technical solution of this utility model, three sets of slide cylinder seat ears are installed in a ring array on the outer side of the lower end of the slide cylinder seat, and a linkage push rod is rotatably connected to each slide cylinder seat ear; three sets of base plate ears are installed in a ring array on the outer side of the upper end of the positioning base plate, and a linkage arm is rotatably connected to each base plate ear, and is rotatably connected to the middle of the linkage arm.

[0012] As a further technical solution of this utility model, the lower end of the linkage arm is correspondingly arranged with the other end of the linkage push rod, and the upper end of the linkage arm is rotatably connected to the clamping drive block; the positioning base plate has three push rod movable slots arranged in a ring array inside, and the push rod movable slots are used for the linkage push rod to slide.

[0013] Compared with the prior art, the beneficial effects of this utility model are: In use, the outer ring clamping and positioning mechanism initially limits the outer ring of the workpiece through the annular positioning groove. Combined with the radial tightening force of the clamping drive block, the outer ring of the workpiece can be clamped and positioned. The inner ring supporting and positioning mechanism has a ring array of supporting plates, which can provide uniform radial support force from the inner ring of the workpiece, forming a reverse balance with the outer ring clamping force. This bidirectional constraint structure can effectively counteract the radial and axial forces generated during the cutting process, achieving dual positioning accuracy assurance. This invention features an outer ring clamping mechanism that uses a threaded rod and adjusting nut for threaded transmission, enabling radial adjustment of the clamping drive block. Combined with the sliding of the positioning slider within the inverted T-shaped guide groove, it can accommodate outer rings of different workpiece models. The inner ring clamping mechanism's double-outlet drive cylinder, through the lever amplification effect of the joint linkage rod, allows for radial extension and retraction of the clamping plate, accommodating inner rings of different workpiece models. For non-standard irregular parts, the contact gap can be adjusted by replacing clamping anti-slip pads of different thicknesses, and with the elastic buffering of springs, the need for customized special fixtures is significantly reduced. In this invention, the central sliding shaft and the sliding cylinder seat are precisely slidably fitted together; the auxiliary linkage rod and the support plate seat form a triangular stable structure, which can greatly reduce the vibration amplitude and significantly extend the tool life during high-speed cutting. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0015] Figure 2 This utility model Figure 1 Top view.

[0016] Figure 3 This utility model Figure 2 A bottom view.

[0017] Figure 4 This utility model Figure 1 A schematic diagram of the split structure.

[0018] Figure 5 This utility model Figure 4 A schematic diagram of the split structure.

[0019] Figure 6 This utility model Figure 4 A partial cross-sectional view of the partially disassembled structure.

[0020] Figure 7 This utility model Figure 3 A schematic diagram of the split structure.

[0021] Figure 8 This utility model Figure 7 A schematic diagram of the split structure.

[0022] Figure 9 This utility model Figure 8 Front view.

[0023] Figure 10 This utility model Figure 6 A magnified view of a portion of the image.

[0024] In the diagram: 1-Mounting platform, 2-Outer ring clamping and positioning mechanism, 3-Gantry frame, 4-Inner ring bracing and positioning mechanism; 11-Base platform; 12-Inverted T-shaped guide groove; 21-Positioning base plate, 22-Annular positioning groove, 23-Positioning slider one, 24-Central sliding shaft, 25-Spring, 26-Threaded rod, 27-Adjusting nut, 28-Slide cylinder seat, 29-Slide cylinder seat ear, 210-Linkage push rod, 211-Base plate ear, 212-Linkage arm, 213-Clamping drive block, 214-Push rod movable groove; 31-Column, 32-Second positioning slider, 33-Top mounting plate; 41-Dual-outlet drive cylinder, 42-Connecting seat, 43-Telescopic guide rod, 44-Ear seat plate, 45-Connecting seat ear seat, 46-Joint linkage rod, 47-Auxiliary linkage rod, 48-Stabilizing plate seat, 49-Stabilizing anti-slip pad. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Please see Figure 1-10 In this embodiment of the utility model, a machining center fixture with positioning function includes... Mounting platform 1, on which an outer ring clamping and positioning mechanism 2 and a gantry frame 3 are respectively mounted; the outer ring clamping and positioning mechanism 2 is located inside the gantry frame 3; an inner ring support and positioning mechanism 4 is fixedly mounted on the upper end of the gantry frame 3. The inner ring support and positioning mechanism 4 includes a double-outlet drive cylinder 41, which is fixedly installed on the upper surface of the connecting seat 42. The connecting seat 42 has a mounting through groove at the center. The lower end of the double-outlet drive cylinder 41 is fixedly connected to the ear plate 44. Three sets of ear seats are fixedly installed on the lower surface of the ear plate 44. All three sets of ear seats are rotatably connected to a joint linkage rod 46, which is arranged in an inverted L-shape. Three sets of connecting seat ear seats 45 are fixedly installed on the lower surface of the connecting seat 42. The connecting seat ear seats 45 are rotatably connected to the joint linkage rod 46 at the corner. The other end of the joint linkage rod 46 is rotatably connected to the support plate seat 48. An auxiliary linkage rod 47 is also rotatably connected to the support plate seat 48. The auxiliary linkage rod 47 is rotatably connected to the connecting seat ear seats 45. Three sets of telescopic guide rods 43 are fixedly installed on the upper surface of the connecting seat 42, and the upper ends of the telescopic guide rods 43 are fixedly connected to the lower surface of the top mounting plate 33; a tensioning anti-slip pad 49 is fixedly installed on each of the tensioning plate seats 48. The center of the lower surface of the top mounting plate 33 is fixedly connected to the upper end of the double-outlet drive cylinder 41, and columns 31 are fixedly installed at the four corners of the lower surface of the top mounting plate 33. The lower end of each column 31 is threaded with a positioning slider 32. The multiple positioning sliders 32 are all connected to the inverted T-shaped guide grooves 12, which are symmetrically arranged on the inner side of the base platform 11. The symmetrically arranged inverted T-shaped guide grooves 12 are also connected to the positioning sliders 23, and the four positioning sliders 23 are threadedly connected to the inner side of the lower end of the positioning base plate 21.

[0027] By adopting the above technical solution, during use, the outer ring clamping and positioning mechanism 2 forms a preliminary limit on the outer ring of the workpiece through the annular positioning groove 22. With the radial tightening force of the clamping drive block 213, the outer ring of the workpiece can be clamped and positioned. The inner ring supporting and positioning mechanism 4 has a supporting plate seat 48 arranged in an annular array, which can provide uniform radial support force from the inner ring of the workpiece, forming a reverse balance with the outer ring clamping force. This bidirectional constraint structure can effectively offset the radial and axial forces generated during the cutting process, achieving dual positioning accuracy assurance.

[0028] In this embodiment, the upper inner side of the positioning base disk 21 is provided with an annular positioning groove 22, and a central sliding shaft 24 is fixedly installed at the center of the inner side of the positioning base disk 21. Multiple springs 25 are installed in an annular array at the lower end of the central sliding shaft 24. A threaded rod 26 is fixedly installed on the upper end of the central sliding shaft 24. The threaded rod 26 is threadedly connected to the adjusting nut 27. A sliding cylinder seat 28 is provided at the lower end of the adjusting nut 27. The sliding cylinder seat 28 is slidably connected to the central sliding shaft 24. The lower end of the central sliding shaft 24 is connected to the upper end of a plurality of springs 25 arranged in a ring array. The lower outer side of the slide cylinder seat 28 is provided with three sets of slide cylinder seat ears 29 arranged in a ring array, and each slide cylinder seat ear 29 is rotatably connected to a linkage push rod 210; the upper outer side of the positioning base plate 21 is provided with three sets of base plate ear 211 arranged in a ring array, and each base plate ear 211 is rotatably connected to a linkage arm 212, and is rotatably connected to the middle of the linkage arm 212. The lower end of the linkage arm 212 is correspondingly set to the other end of the linkage push rod 210, and the upper end of the linkage arm 212 is rotatably connected to the clamping drive block 213; the positioning base plate 21 has three push rod movable grooves 214 arranged in a ring array inside, and the push rod movable grooves 214 are used for sliding of the linkage push rod 210.

[0029] By adopting the above technical solution, the outer ring clamping mechanism can realize the radial adjustment range of the clamping drive block 213 through the threaded transmission of the threaded rod 26 and the adjusting nut 27. With the sliding of the positioning slider 23 in the inverted T-shaped guide groove 12, it can adapt to the outer ring of different models of workpieces. The double-outlet drive cylinder 41 of the inner ring clamping mechanism can realize the radial extension and retraction of the clamping plate seat 48 through the lever amplification effect of the joint linkage rod 46, adapting to the inner ring of different models of workpieces. For non-standard irregular parts, the contact gap can be adjusted by replacing the clamping anti-slip pads 49 of different thicknesses. With the elastic buffer of the spring 25, the customization requirements of special fixtures are greatly reduced. The central sliding shaft 24 is precisely slidably fitted with the slide cylinder seat 28; the auxiliary linkage rod 47 and the support plate seat 48 form a triangular stable structure, which can greatly reduce the vibration amplitude and significantly extend the tool life during high-speed cutting.

[0030] The working principle of this utility model is as follows: The inverted T-shaped guide groove 12 of the base platform 11 provides a sliding track for the positioning slider 1 23 and positioning slider 2 32. The positioning slider 1 23 and positioning slider 2 32 can be positioned by tightening the bolts provided on the upper end of the positioning slider 1 23 and positioning slider 2 32. By adjusting the positioning slider 2 32 at the lower end of the column 31, the relative position of the gantry frame 3 and the outer ring clamping positioning mechanism 2 can be adjusted to meet the placement requirements of workpieces of different sizes. Rotating the adjusting nut 27 causes it to move down along the threaded rod 26, pushing the slide cylinder seat 28 to slide down along the central slide shaft 24 and compressing the spring 25. The slide cylinder seat ear seat 29 drives the linkage push rod 210 to slide in the push rod movable groove 214, and at the same time pushes the linkage arm 212 to rotate around the base plate ear seat 211, finally causing the clamping drive block 213 to tighten towards the center, which, together with the annular positioning groove 22 of the positioning base plate 21, realizes the clamping and positioning of the outer ring of the workpiece. When the reverse adjustment nut 27 is activated, the spring 25 returns to its original position, and the clamping drive block 213 is released. The double-outlet drive cylinder 41 extends and retracts, causing the ear plate 44 to move up and down, making the inverted L-shaped joint linkage rod 46 rotate around the connecting seat ear 45, thereby pushing the support plate seat 48 to open outward or retract inward. The auxiliary linkage rod 47 enhances the stability of the support plate seat 48, and the anti-slip pad 49 prevents the workpiece from slipping, achieving the support and positioning of the inner ring of the workpiece. The telescopic guide rod 43 ensures the verticality of the connecting seat 42 when it moves, improving the positioning accuracy. In use, the outer ring clamping and positioning mechanism 2 initially limits the outer ring of the workpiece through the annular positioning groove 22. With the radial tightening force of the clamping drive block 213, the outer ring of the workpiece can be clamped and positioned. The inner ring supporting and positioning mechanism 4 has a supporting plate seat 48 arranged in a ring array, which can provide uniform radial support force from the inner ring of the workpiece, forming an opposite balance with the outer ring clamping force. This bidirectional constraint structure can effectively counteract the radial and axial forces generated during the cutting process, achieving dual positioning accuracy assurance. The outer ring clamping mechanism, through the threaded transmission of the threaded rod 26 and the adjusting nut 27, can realize the radial adjustment range of the clamping drive block 213. With the sliding of the positioning slider 23 in the inverted T-shaped guide groove 12, it can adapt to the outer ring of different workpiece models. The double-outlet drive cylinder 41 of the inner ring clamping mechanism, through the lever amplification effect of the joint linkage rod 46, can realize the radial extension and retraction of the clamping plate seat 48, adapting to the inner ring of different workpiece models. For non-standard irregular parts, the contact gap can be adjusted by replacing the clamping anti-slip pads 49 of different thicknesses. With the elastic buffer of the spring 25, the customization requirements of special fixtures are greatly reduced. The central sliding shaft 24 is precisely slidably fitted with the slide cylinder seat 28; the auxiliary linkage rod 47 and the support plate seat 48 form a triangular stable structure, which can greatly reduce the vibration amplitude and significantly extend the tool life during high-speed cutting.

[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0032] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style of the specification is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A machining center fixture with positioning function, characterized in that: include Mounting platform (1), on which an outer ring clamping and positioning mechanism (2) and a gantry frame (3) are respectively mounted; the outer ring clamping and positioning mechanism (2) is located inside the gantry frame (3); an inner ring support and positioning mechanism (4) is fixedly mounted on the upper end of the gantry frame (3). The inner ring support and positioning mechanism (4) includes a double-outlet drive cylinder (41), which is fixedly installed on the upper surface of the connecting seat (42). The connecting seat (42) has a mounting through groove at the center. The lower end of the double-outlet drive cylinder (41) is fixedly connected to the ear seat plate (44). Three sets of ear seats are fixedly installed on the lower surface of the ear seat plate (44). All three sets of ear seats are rotatably connected to a joint linkage rod (46). The joint linkage rod (46) is arranged in an inverted L shape. Three sets of connecting seat ear seats (45) are fixedly installed on the lower surface of the connecting seat (42). The connecting seat ear seats (45) are rotatably connected to the joint linkage rod (46) at the corner. The other end of the joint linkage rod (46) is rotatably connected to the support plate seat (48). An auxiliary linkage rod (47) is also rotatably connected to the support plate seat (48). The auxiliary linkage rod (47) is rotatably connected to the connecting seat ear seats (45).

2. The machining center fixture with positioning function according to claim 1, characterized in that: Three sets of telescopic guide rods (43) are fixedly installed on the upper surface of the connecting seat (42), and the upper ends of the telescopic guide rods (43) are fixedly connected to the lower surface of the top mounting plate (33); and anti-slip pads (49) are fixedly installed on the tensioning plate seat (48).

3. The machining center fixture with positioning function according to claim 2, characterized in that: The center of the lower surface of the top mounting plate (33) is fixedly connected to the upper end of the double-outlet drive cylinder (41), and columns (31) are fixedly installed at the four corners of the lower surface of the top mounting plate (33). The lower end of each column (31) is threaded with a positioning slider (32).

4. The machining center fixture with positioning function according to claim 3, characterized in that: The multiple positioning sliders (32) are all connected to the inverted T-shaped guide groove (12), which is symmetrically arranged on the inner side of the base platform (11). The symmetrically arranged inverted T-shaped guide groove (12) is also connected to the positioning slider (23), and the four positioning sliders (23) are threadedly connected to the inner side of the lower end of the positioning base plate (21).

5. The machining center fixture with positioning function according to claim 4, characterized in that: The positioning base plate (21) has an annular positioning groove (22) on the inner side of the upper end, and a central sliding shaft (24) is fixedly installed at the center of the inner side of the positioning base plate (21). Multiple springs (25) are installed in an annular array at the lower end of the central sliding shaft (24).

6. The machining center fixture with positioning function according to claim 5, characterized in that: The upper end of the central sliding shaft (24) is fixedly installed with a threaded rod (26), which is threadedly connected to the adjusting nut (27). The lower end of the adjusting nut (27) is provided with a sliding cylinder seat (28), which is slidably connected to the central sliding shaft (24). The lower end of the central sliding shaft (24) is connected to the upper end of multiple springs (25) arranged in a ring array.

7. The machining center fixture with positioning function according to claim 6, characterized in that: The lower outer side of the slide cylinder seat (28) is equipped with three sets of slide cylinder seat ears (29) in a ring array, and each slide cylinder seat ear (29) is rotatably connected to a linkage push rod (210); the upper outer side of the positioning base plate (21) is equipped with three sets of base plate ear (211) in a ring array, and each base plate ear (211) is rotatably connected to a linkage arm (212), and is rotatably connected to the middle of the linkage arm (212).

8. The machining center fixture with positioning function according to claim 7, characterized in that: The lower end of the linkage arm (212) is correspondingly set to the other end of the linkage push rod (210), and the upper end of the linkage arm (212) is rotatably connected to the clamping drive block (213); the positioning base plate (21) has three push rod movable slots (214) arranged in a ring array inside, and the push rod movable slots (214) are used for the linkage push rod (210) to slide.

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