Multi-station rotating clamp of machining center

Abstract

The utility model relates to the technical field of machining centers, in particular to a machining center multi-station rotating clamp which comprises a chuck arranged in a machine body, a movable rod and a movable disc are driven to rotate by starting a control motor through the arrangement of a fixing assembly, and when the movable disc rotates, a clamping table is pulled to slide through a pull rod. When a clamping table slides, a clamping block and a positioning plate are driven to move, when the positioning plate moves, a machined object reversely abuts against the positioning plate, so that the positioning plate drives an abutting rod to slide, and when the abutting rod slides, the abutting rod abuts against the surface of a connecting strip and drives a rotating plate and a clamping shaft to move; during clamping, the clamping shaft at the bottom of the rotating plate can be rotationally adjusted according to machined objects in different shapes, so that the clamping shaft is attached to the surfaces of the machined objects for positioning, the situation that the machined objects in different shapes are different, the accuracy of the relative positions of the workpieces and a cutter is difficult to guarantee when the workpieces are machined on all stations is prevented, the machining precision is improved, and the machining efficiency is improved. The working efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of machining center technology, specifically to a multi-station rotary fixture for machining centers. Background Technology

[0002] Against the backdrop of the booming development of modern manufacturing, machining centers, with their advantages of high automation, high precision, and the ability to perform multiple processing techniques, have become core equipment for the production of high-precision parts in many industries. Whether it's the precision manufacturing of complex structural components in the aerospace field, the processing of key components such as engines in the automotive industry, or the production of precision molds and small parts in electronic equipment, machining centers play an indispensable role. As products in various industries continue to develop towards high performance, high precision, and lightweight, the requirements for machining center accuracy and efficiency are becoming increasingly stringent. In actual machining processes, multiple different processing operations are often required on the same workpiece, which poses a greater challenge to workpiece clamping and positioning.

[0003] However, existing multi-station rotary fixtures in machining centers are difficult to use to achieve all-round and precise positioning and fixation. Due to the different surface contours of workpieces of different shapes, the fit between the rotary fixture and the workpiece is not ideal. During the machining process, the workpiece is easily affected by cutting forces, vibrations and other factors, resulting in displacement or angular changes. This leads to a decrease in the accuracy of the relative position between the workpiece and the tool, and in turn, machining deviations such as hole offset, flatness failure and contour accuracy failure. These problems seriously affect the final quality of the product, fail to meet the machining needs of modern manufacturing for high-precision parts, and reduce work efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a multi-station rotary fixture for machining centers, which solves the problems of traditional rotary fixtures having difficulty clamping workpieces of different shapes and the insufficient fit between the rotary fixture and the workpiece.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A multi-station rotary fixture for a machining center includes a chuck disposed inside the machine body, a control motor disposed at the bottom of the chuck, the control motor being fixedly installed inside the machine body, the chuck being fixedly installed on the surface of the output shaft of the control motor, and a station plate being fixedly installed on the surface of the chuck.

[0007] It also includes a fixing component for rotating and clamping objects of different shapes and sizes;

[0008] A restraining component is used to prevent objects from being over-clamped during rotational gripping.

[0009] The fixing assembly includes: a base plate, which is fixedly installed inside the machine body. A movable rod is rotatably connected to the top of the base plate. The movable rod is fixedly installed on the surface of the control motor. A movable disc is fixedly installed on the surface of the movable rod. A pull rod is hinged to the bottom of the movable disc. A clamping platform is hinged to the top of the pull rod. The clamping platform is slidably connected to the top of the base plate. A clamping block is fixedly installed on the top of the clamping platform.

[0010] Preferably, a positioning plate is slidably connected inside the clamping block, an abutment rod is installed on the top of the positioning plate, a movable plate is rotatably connected inside the clamping block, a spiral spring is fixedly installed on the surface of the movable plate, the spiral spring is fixedly installed on the top of the clamping block, and a connecting strip is fixedly installed on the surface of the movable plate.

[0011] Preferably, a rotating plate is rotatably connected to the bottom of the movable plate, and a clamping shaft is rotatably connected to the bottom of the rotating plate.

[0012] Preferably, the limiting component includes: a fixing block, the fixing block being fixedly installed on the top of the clamping table, a telescopic rod being fixedly installed on the inner side of the fixing block, a fixing spring being fixedly installed on the surface of the telescopic rod, the telescopic rod being fixedly installed on the outer side of the positioning plate, a fixing strip being fixedly installed on the surface of the telescopic rod, a push rod being hinged to the inner side of the fixing strip, a push block being hinged to the surface of the push rod, the push block being slidably connected inside the fixing block, and a toothed plate being fixedly installed on the top of the push block.

[0013] Preferably, a plug rod is hinged to the top of the fixing block, a second spiral spring is fixedly installed on the outside of the plug rod, the second spiral spring is fixedly installed on the top of the fixing block, a gear is rotatably connected to the inside of the fixing block, the gear meshes with the top of the gear plate, and the plug rod is inserted into the surface of the gear.

[0014] Preferably, the limiting components are provided in four sets, and the four sets of limiting components are arranged in a circular array with the center point of the clamping plate as the center.

[0015] Preferably, the bottom plate has a sliding groove on the top, and the cross-section of the pull rod is L-shaped.

[0016] By employing the above technical solution, this utility model provides a multi-station rotary fixture for machining centers. It possesses at least the following beneficial effects:

[0017] (1) This utility model uses a fixed component to start a control motor to drive the rotation of the movable rod and the movable plate. When the movable plate rotates, it will pull the clamping table to slide through the pull rod. When the clamping table slides, it will drive the clamping block and the positioning plate to move. When the positioning plate moves, the workpiece will resist the positioning plate in the opposite direction, so that the positioning plate will drive the resisting rod to slide. When the resisting rod slides, it will resist the surface of the connecting strip and drive the rotating plate and the clamping shaft to move. When clamping, the clamping shaft at the bottom of the rotating plate can be rotated and adjusted according to the different shapes of the workpiece, so that the clamping shaft is in contact with the surface of the workpiece for positioning, preventing the differences between different shapes of workpieces from making it difficult to ensure the accuracy of the relative position of the workpiece and the tool when processing at each station, thus improving the processing accuracy and enhancing the work efficiency.

[0018] (2) By setting the limiting component, the present invention will cause the telescopic rod to retract when the positioning plate moves. When the telescopic rod retracts, it will cause the push rod on the outside of the fixed bar to slide against the toothed plate at the top of the push block at the bottom of the gear, thereby causing the gear to rotate. When the gear rotates, it will resist the insertion rod to swing upward. After the positioning plate has finished resisting the workpieces of different sizes, the insertion rod will be reset under the action of the spiral spring II, so that the insertion rod is re-inserted into the surface of the gear for restriction, preventing the rotating fixture from causing over-clamping when clamping workpieces of different sizes, improving the stability and safety of clamping, and reducing material loss caused by over-clamping. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention, form part of this application:

[0020] Figure 1 This is a schematic diagram of the overall front view of the present invention;

[0021] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0022] Figure 3 This is a front view schematic diagram of the clamping plate structure in this utility model;

[0023] Figure 4 This is a front view of the fixing component in this utility model;

[0024] Figure 5 This is a front view structural diagram of the bottom plate of this utility model;

[0025] Figure 6 This is a front view schematic diagram of the limiting component in this utility model;

[0026] Figure 7 This is a front view structural diagram of the bottom plate of this utility model.

[0027] In the diagram: 1. Machine body; 2. Clamping plate; 3. Workstation plate; 6. Control motor; 4. Fixed assembly; 41. Base plate; 42. Movable rod; 43. Movable disc; 44. Pull rod; 45. Clamping table; 46. Clamping block; 47. Positioning plate; 48. Abutment rod; 49. Movable plate; 410. First spiral spring; 411. Connecting strip; 412. Rotating plate; 413. Clamping shaft; 5. Restriction assembly; 51. Fixed block; 52. Telescopic rod; 53. Fixed spring; 54. Fixed strip; 55. Push rod; 56. Push block; 57. Toothed plate; 58. Insert rod; 59. Second spiral spring; 510. Gear; 4100. Slide groove. Detailed Implementation

[0028] 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.

[0029] Example 1

[0030] A multi-station rotary fixture for machining centers, such as Figures 1-5 As shown, the machine includes a chuck 2 set inside the machine body 1. The workpiece can be fixed by the grooves opened on the surface of the chuck 2. The chuck 2 has four sets of grooves, so it can achieve the effect of multiple workstations. A control motor 6 is set at the bottom of the chuck 2. The control motor 6 is fixedly installed inside the machine body 1. The chuck 2 is fixedly installed on the surface of the output shaft of the control motor 6. A workstation plate 3 is fixedly installed on the surface of the chuck 2.

[0031] It also includes a fixing component 4, which is used to rotate and clamp objects of different shapes and sizes;

[0032] Limiting component 5 is used to prevent the object from being over-clamped during rotational clamping.

[0033] First, the fixed assembly 4 includes: a base plate 41, which is fixedly installed inside the machine body 1. A movable rod 42 is rotatably connected to the top of the base plate 41. The movable rod 42 is fixedly installed on the surface of the control motor 6. A movable disc 43 is fixedly installed on the surface of the movable rod 42. A pull rod 44 is hinged to the bottom of the movable disc 43. A clamping platform 45 is hinged to the top of the pull rod 44. The clamping platform 45 is slidably connected to the top of the base plate 41. A clamping block 46 is fixedly installed on the top of the clamping platform 45. The clamping platform 45 can slide on the top of the base plate 41 by rotating the movable disc 43 and using the pull rod 44.

[0034] Secondly, a positioning plate 47 is slidably connected inside the clamping block 46, and an abutment rod 48 is installed on the top of the positioning plate 47. A movable plate 49 is rotatably connected inside the clamping block 46, and a spiral spring 410 is fixedly installed on the surface of the movable plate 49. The spiral spring 410 is fixedly installed on the top of the clamping block 46, and a connecting strip 411 is fixedly installed on the surface of the movable plate 49. The spiral spring 410 can be used to achieve the effect of resetting the movable plate 49 after use. A rotating plate 412 is rotatably connected to the bottom of the movable plate 49, and a clamping shaft 413 is rotatably connected to the bottom of the rotating plate 412. The workpiece can be clamped by the rotatably connected clamping shaft 413, and the workpiece can be rotated and adjusted according to different shapes.

[0035] In this embodiment, by setting the fixed component 4, the control motor 6 is started to drive the rotation of the movable rod 42 and the movable disk 43. When the movable disk 43 rotates, it will pull the clamping table 45 to slide through the pull rod 44. When the clamping table 45 slides, it will drive the clamping block 46 and the positioning plate 47 to move. When the positioning plate 47 moves, the workpiece will abut against the positioning plate 47, causing the positioning plate 47 to drive the abutting rod 48 to slide. When the abutting rod 48 slides, it will abut against the surface of the connecting strip 411 and drive the rotating plate 412 and the clamping shaft 413 to move, thereby clamping the bottom end of the workpiece. When clamping, the clamping shaft 413 at the bottom of the rotating plate 412 can be rotated and adjusted according to the different shapes of the workpiece, so that the clamping shaft 413 fits against the surface of the workpiece for positioning, preventing differences between different shapes of workpieces, which makes it difficult to ensure the accuracy of the relative position of the workpiece and the tool when processing at each station, thus improving the processing accuracy and enhancing the work efficiency.

[0036] Example 2

[0037] like Figures 6-7 As shown, the limiting component 5 includes: a fixing block 51, which is fixedly installed on the top of the clamping table 45; a telescopic rod 52 is fixedly installed on the inner side of the fixing block 51; a fixing spring 53 is fixedly installed on the surface of the telescopic rod 52; the telescopic rod 52 is fixedly installed on the outer side of the positioning plate 47; a fixing strip 54 is fixedly installed on the surface of the telescopic rod 52; a push rod 55 is hinged to the inner side of the fixing strip 54; a push block 56 is hinged to the surface of the push rod 55; the push block 56 is slidably connected inside the fixing block 51; and a toothed plate 57 is fixedly installed on the top of the push block 56.

[0038] Furthermore, a plug rod 58 is hinged to the top of the fixing block 51, and a spiral spring 59 is fixedly installed on the outside of the plug rod 58. The spiral spring 59 is fixedly installed on the top of the fixing block 51, and a gear 510 is rotatably connected to the inside of the fixing block 51. The gear 510 meshes with the top of the gear plate 57, and the plug rod 58 is inserted into the surface of the gear 510. The spiral spring 59 installed on the surface of the plug rod 58 can achieve the effect of resetting the plug rod 58 after it is pushed by the gear 510 when it rotates.

[0039] Finally, four sets of limiting components 5 are provided, and the four sets of limiting components 5 are arranged in a circular array with the center point of the clamping plate 2 as the center. A sliding groove 4100 is provided on the top of the base plate 41, which allows the clamping table 45 to slide on the top of the base plate 41. The cross-section of the pull rod 44 is L-shaped, which can improve the connection between the pull rod 44 and the clamping table 45.

[0040] In this embodiment, by setting the limiting component 5, when the positioning plate 47 moves, it will also drive the telescopic rod 52 to retract. When the telescopic rod 52 retracts, it will drive the push rod 55 on the outside of the fixing bar 54 to abut against the toothed plate 57 at the top of the push block 56 and slide at the bottom of the gear 510, thereby driving the gear 510 to rotate. When the gear 510 rotates, it will abut against the insertion rod 58 and swing upward. When the positioning plate 47 has finished abutting against the workpieces of different sizes, the insertion rod 58 will be reset under the action of the spiral spring 59, so that the insertion rod 58 is re-inserted into the surface of the gear 510 for restriction, preventing the rotating fixture from causing over-clamping when clamping workpieces of different sizes, improving the stability and safety of clamping, and reducing material loss caused by over-clamping.

[0041] In use, the multi-station rotary fixture of this utility model allows the workpiece to be placed on the workstation plate 3 and fixed by the clamping plate 2. After fixing, the control motor 6 is started to drive the rotation of the movable rod 42. When the movable rod 42 rotates, it drives the movable plate 43 to rotate. When the movable plate 43 rotates, it pulls the clamping table 45 to slide on the top of the base plate 41 via the pull rod 44. When the clamping table 45 slides, the clamping block 46 and the positioning plate 47 move closer to the surface of the workpiece. When the positioning plate 47 moves, the workpiece will abut against the positioning plate 47, causing the positioning plate 47 to slide inside the clamping block 46, and driving the abutment rod 48 to slide. When the contact rod 48 slides, it abuts against the surface of the connecting strip 411 and drives the rotating plate 412 to move closer to the surface of the workpiece, thereby clamping the bottom end of the workpiece. When clamping, the clamping shaft 413 at the bottom of the rotating plate 412 can be rotated and adjusted according to the different shapes of the workpiece, so that the clamping shaft 413 fits against the surface of the workpiece for positioning, preventing differences between different shapes of workpieces. If the rotating fixture cannot fit well against the surface for positioning, it is difficult to guarantee the accuracy of the relative position of the workpiece and the tool during processing at each station, which can easily cause processing deviations, such as hole offset and non-compliance with flatness standards. This improves processing accuracy and enhances work efficiency.

[0042] When the positioning plate 47 moves, it also causes the telescopic rod 52 to retract. When the telescopic rod 52 retracts, it causes the push rod 55 on the outside of the fixing bar 54 to move closer to the surface of the fixing block 51. When the push rod 55 moves, it causes the toothed plate 57 at the top of the push block 56 to slide at the bottom of the gear 510, thereby causing the gear 510 to rotate. When the gear 510 rotates, it will resist the insertion rod 58 and swing upward. After the positioning plate 47 has finished resisting the workpieces of different sizes, the insertion rod 58 will be reset under the action of the spiral spring 59, so that the insertion rod 58 is re-inserted into the surface of the gear 510 for restriction. This prevents the rotating fixture from over-clamping when clamping workpieces of different sizes, improves the stability and safety of clamping, and reduces material loss caused by over-clamping.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A machining center multi-station rotary clamp comprising a chuck (2) arranged inside a body (1), characterized in that: The chuck (2) bottom is provided with a control motor (6), the control motor (6) is fixedly installed in the inside of the body (1), the chuck (2) is fixedly installed on the surface of the output shaft of the control motor (6), the chuck (2) surface is fixedly installed with the station plate (3); It also includes a fixed assembly (4) for rotating and clamping objects of different shapes and sizes; Limiting assembly (5), for preventing the effect of excessive clamping of the object during the rotating and clamping process; The fixed assembly (4) comprises: a bottom plate (41) fixedly installed in the inside of the body (1), the top of the bottom plate (41) is rotatably connected with a movable rod (42), the movable rod (42) is fixedly installed on the surface of the control motor (6), the surface of the movable rod (42) is fixedly installed with a movable disc (43), the bottom of the movable disc (43) is hingedly connected with a pull rod (44), the top of the pull rod (44) is hingedly connected with a clamping table (45), the clamping table (45) is slidably connected on the top of the bottom plate (41), the top of the clamping table (45) is fixedly installed with a clamping block (46).

2. The multi-station rotary fixture for machining centers according to claim 1, characterized in that: The inside of the clamping block (46) is slidably connected with a positioning plate (47), the top of the positioning plate (47) is provided with a resisting rod (48), the inside of the clamping block (46) is rotatably connected with a movable plate (49), the surface of the movable plate (49) is fixedly installed with a volute spring (410), the volute spring (410) is fixedly installed on the top of the clamping block (46), the surface of the movable plate (49) is fixedly installed with a connecting strip (411).

3. The multi-station rotary fixture of claim 2, wherein: The bottom of the movable plate (49) is rotatably connected with a rotating plate (412), the bottom of the rotating plate (412) is rotatably connected with a clamping shaft (413).

4. The multi-station rotary fixture of claim 1, wherein: The limiting assembly (5) comprises: a fixed block (51) fixedly installed on the top of the clamping table (45), a telescopic rod (52) fixedly installed on the inner side of the fixed block (51), a fixed spring (53) fixedly installed on the surface of the telescopic rod (52), the telescopic rod (52) fixedly installed on the outer side of the positioning plate (47), a fixed strip (54) fixedly installed on the surface of the telescopic rod (52), a push rod (55) hingedly connected on the inner side of the fixed strip (54), a push block (56) hingedly connected on the surface of the push rod (55), the push block (56) is slidably connected in the inside of the fixed block (51), a toothed plate (57) fixedly installed on the top of the push block (56).

5. The multi-station rotary fixture for a machining center according to claim 4, wherein: The top of the fixed block (51) is hingedly connected with a plug rod (58), the outer side of the plug rod (58) is fixedly installed with a volute spring (59), the volute spring (59) is fixedly installed on the top of the fixed block (51), a gear (510) rotatably connected on the inner side of the fixed block (51), the gear (510) is engaged on the top of the toothed plate (57), the plug rod (58) is inserted on the surface of the gear (510).

6. The multi-station rotary fixture for a machining center of claim 1, wherein: The limiting assembly (5) is provided with four groups, and the four groups of limiting assemblies (5) are arranged in a circular array with the center point of the chuck (2) as the center.

7. The multi-station rotary fixture of claim 1, wherein: The bottom plate (41) is provided with a chute (4100) on the top, and the pull rod (44) is L-shaped in cross section.

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