Rotary tool clamp

Abstract

The invention discloses a rotary tool clamp. The rotary tool clamp comprises a base; the rotary driving assembly comprises a four-axis cam rotary table and a disc type brake tailstock which are detachably fixed to the two ends of the base respectively; the rotating seat is rotatably connected between the four-axis cam rotary table and the disc type brake tailstock and is driven by the four-axis cam rotary table to rotate, and a plurality of positioning pieces for fastening workpieces are fixed on the rotating seat; the multiple rotary limiting assemblies are distributed on the base at intervals in the length direction and supported below the rotary base, and the rotary limiting assemblies are connected with the rotary base through bolts. The rotary tool clamp can be used for clamping and machining large-size workpieces, the multiple rotary limiting assemblies are arranged at the lower end of the rotary base of the rotary tool clamp at intervals, and the multiple rotary limiting assemblies support and limit the rotary base; the fixture and the workpiece are prevented from shaking in the rotating process and vibrating in the machining process, and therefore the machining efficiency and precision of the special large and long workpiece are improved.

Description

Technical Field

[0001] The invention relates to the technical field of four-axis turntable processing equipment, and in particular to a rotary fixture. Background Art

[0002] A fixture is a piece of equipment used to clamp and fasten the workpiece during processing, so that the machine tool, tool, and workpiece maintain the correct relative position. Therefore, fixtures are indispensable parts of mechanical processing. Driven by the development of machine tool technology towards high speed, high efficiency, precision, composite, intelligent, and environmentally friendly, fixture technology is developing towards high precision, high efficiency, modular, combined, universal, and economical directions. A fixture is also called a clamp. In a broad sense, any device used to quickly, conveniently, and safely install a workpiece in any process in the process can be called a fixture, such as welding fixtures, inspection fixtures, assembly fixtures, machine tool fixtures, etc., among which machine tool fixtures are the most common.

[0003] In the production process, it is often necessary to process multiple sides of the workpiece, so the fixture is required to drive the workpiece to rotate and have sufficient stability to ensure the workpiece processing accuracy. The current rotating fixtures are generally only clamped and fixed at both ends. During the processing, vibration is easy to occur when processing the middle of the workpiece, and the processing accuracy is difficult to control stably, especially for long and large workpieces. It is more difficult to ensure the accuracy of the parts. When clamping large-sized workpieces for processing, due to the large size and heavy weight of the workpiece, conventional fixtures lead to low stability during rotation. The only way is to reduce the rotation speed and the feed speed of the processing tool, resulting in very low processing efficiency. Summary of the invention

[0004] In order to solve at least one technical problem in the prior art, the present invention provides a rotary fixture.

[0005] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention is: a rotary fixture, comprising: a base; A rotary drive assembly, comprising a four-axis cam turntable and a disc brake tailstock, which are detachably fixed to both ends of the base; A rotating seat is rotatably connected between the four-axis cam turntable and the disc brake tailstock and rotates under the drive of the four-axis cam turntable. A plurality of positioning parts for fastening the workpiece are fixed on the rotating seat. A plurality of rotation limiting components are distributed on the base at intervals along the length direction and supported below the rotating seat. The rotation limiting components are connected to the rotating seat by bolts.

[0006] In certain embodiments, the rotation limiting assembly includes multiple groups of support components and multiple groups of rotation limiting components, and the multiple groups of support components and the multiple groups of rotation limiting components are alternately arranged and detachably fixed to the base by bolts.

[0007] In some embodiments, a group of the supporting components includes a first connecting seat, N roller supporting seats, N rollers and a first annular plate, the first connecting seat is fixed to the base by bolts, the N roller supporting seats are fixed at intervals on the first connecting seat, the first annular plate is detachably connected to the rotating seat, the rollers are rotatably arranged on the roller supporting seat one by one, the N rollers are supported below the first annular plate along the circumference of the first annular plate and are in rolling contact with the first annular plate, wherein N≥3.

[0008] In some embodiments, the first annular plate is a semicircular plate, and a first slot adapted to the rotating seat is formed at the upper end of the first annular plate, and the rotating seat is disposed in the first slot and connected to the first annular plate by bolts; The first annular plate is provided with a limiting sliding groove extending in the circumferential direction, and the roller part is arranged in the limiting sliding groove.

[0009] In certain embodiments, a plurality of support seats are detachably fixed to the upper surface of the first connecting seat, the plurality of support seats are distributed along the length direction of the first connecting seat and the upper end surfaces of the plurality of support seats form a "V"-shaped mounting surface, and the N roller support seats are detachably fixed to the plurality of support seats and distributed along the mounting surface so that the surface formed by connecting the tops of the N rollers is an arc-shaped surface.

[0010] In some embodiments, a group of the limiting components includes a locking seat, two limiting claws and a second annular plate, the locking seat is fixed to the base by bolts, the second annular plate is detachably connected to the rotating seat, and the two limiting claws are symmetrically arranged on the second connecting seat and slidably supported on the two side surfaces of the second annular plate.

[0011] In some embodiments, the limiting clamp has an inclined rod body, and the two rod bodies are supported on two side surfaces of the second annular plate in an inverted "V" shape; The rotation limiting component also includes a plurality of first connecting plates and a plurality of second connecting plates, the two ends of the first connecting plates are respectively hinged to the limiting clamps and the second connecting seat, and the two ends of the second connecting plates are respectively hinged to the two limiting clamps and the vertical linear actuator.

[0012] In some embodiments, a vertical linear actuator is disposed on the second connecting seat, and the vertical linear actuator is disposed between the two limiting jaws and connected to the limiting jaws through the second connecting plate, and a plurality of the first connecting plates, a plurality of the second connecting plates, the two limiting jaws and the vertical linear actuator form a multi-link structure.

[0013] In some embodiments, the two ends of the rotating seat are detachably connected to a first connecting block and a second connecting block respectively; The four-axis cam turntable includes a transmission shaft, the first connecting seat is fixed on the transmission shaft, the disc brake tail seat includes a driven shaft, and the second connecting seat is connected to the driven shaft.

[0014] In some embodiments, the four-axis cam turntable further includes a first housing, a driving motor detachably connected to the first housing, and a transmission assembly disposed in the first housing, the transmission assembly being used for transmission between the driving motor and the transmission shaft; The disc brake tailstock comprises a second housing, and the driven shaft is rotatably disposed in the second housing.

[0015] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The rotary fixture of the present invention can be used for fastening processing of large-sized workpieces, and the rotary fixture of the present invention is provided with a plurality of rotary limit assemblies at intervals at the lower end of the rotary seat. The plurality of rotary limit assemblies support and limit the bracket to prevent the rotary seat from shaking during the rotary processing, thereby improving the processing accuracy of the machine tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a rotary fixture of the present invention; Figure 2 It is a schematic diagram of the three-dimensional structure of the supporting component of the present invention; Figure 3 It is a partial structural schematic diagram of the supporting component of the present invention; Figure 4 It is a structural schematic diagram of the rotation limiting component of the present invention. DETAILED DESCRIPTION

[0017] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be noted that the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0018] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0019] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0020] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0021] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] Reference Figures 1 to 4The present invention provides a rotary fixture, comprising a base 1, a rotary drive assembly, a rotary seat 4 and a plurality of rotary limit assemblies, the rotary drive assembly comprising a four-axis cam turntable 2 and a disc brake tailstock 3 which are detachably fixed at both ends of the base 1, respectively, the rotary seat 4 is rotatably connected between the driving four-axis cam turntable 2 and the disc brake tailstock 3 and performs rotary motion under the drive of the four-axis cam turntable 2, a plurality of positioning members 40 for fastening a workpiece 7 are fixed on the rotary seat 4, a plurality of rotary limit assemblies are distributed on the base 1 at intervals along the length direction and supported below the rotary seat 4, and the plurality of rotary limit assemblies are respectively connected to the rotary seat 4 by bolts.

[0024] The rotary fixture of the present invention can be used for the fastening processing of large-sized workpieces 7, and the rotary fixture of the present invention is provided with a plurality of rotation limit assemblies at intervals at the lower end of the rotating seat 4. The plurality of rotation limit assemblies support and limit the rotating seat 4 to prevent the bracket 4 from shaking during the rotation processing, thereby improving the processing accuracy of the machine tool.

[0025] In some embodiments, the rotation limiting assembly includes multiple groups of support components 5 and multiple groups of rotation limiting components 6. The multiple groups of support components 5 and the multiple groups of rotation limiting components 6 are alternately arranged and detachably fixed to the base 1 by bolts.

[0026] In some embodiments, a group of supporting components 5 includes a first connecting seat 51, N roller supporting seats 52, N rollers 53 and a first annular plate 54, the first connecting seat 51 is fixed to the base 1 by bolts, the N roller supporting seats 52 are fixed at intervals on the first connecting seat 51, the first annular plate 54 is detachably connected to the rotating seat 4, the rollers 53 are one-to-one and rotatably arranged on the roller supporting seat 52, the N rollers 53 are supported along the circumference of the first annular plate 54 below the first annular plate 54 and are in rolling contact with the first annular plate 54, wherein N≥3.

[0027] The roller support module is designed to share the weight load of the four-axis cam turntable 2 and the disc brake tailstock 3 to avoid structural deformation caused by stress concentration in the middle due to the excessive length of the rotating seat 4; the roller support not only provides additional support force, but also ensures smooth and stable rotation movement.

[0028] In some embodiments, the first annular plate 54 is a semicircular plate, and a first slot 540 adapted to the rotating seat 4 is opened at the upper end of the first annular plate 54 . The rotating seat 4 is disposed in the first slot 540 and connected to the first annular plate 54 by bolts.

[0029] Furthermore, the first annular plate 54 is provided with a limiting slide groove 541 extending in the circumferential direction, and the roller 53 is partially disposed in the limiting slide groove 541. Specifically, the edges of the two side surfaces of the first annular plate 54 are respectively detachably fixed with limiting plates 55, which extend in the circumferential direction of the first annular plate 54. In the radial direction, the edge of the limiting plate 55 exceeds the first annular plate 54, so that the limiting slide groove 541 extending in the circumferential direction is formed between the two limiting plates 55 and the first annular plate 54. The two limiting plates 55 can be used to limit the two end surfaces of the roller 53 to prevent slippage during the relative rolling process of the first annular plate 54 and the roller 53.

[0030] Furthermore, the support component 5 also includes a dirt partition plate 56 that is detachably fixed to the outside of the roller support seat 52 located at both ends. The dirt partition plate 56 is located on the outside of the roller 53. The dirt partition plate 56 is generally in a "convex" shape, and its protruding part is arranged in the limiting slide groove 541, which can effectively prevent processing debris from entering the roller area.

[0031] In some embodiments, a plurality of support seats 510 are detachably fixed to the upper surface of the first connecting seat 51, and the plurality of support seats 510 are distributed along the length direction of the first connecting seat 51 and the upper end surfaces of the plurality of support seats 510 form a "V"-shaped mounting surface, and the N roller support seats 52 are detachably fixed to the plurality of support seats 510 and distributed along the mounting surface so that the surface formed by connecting the tops of the N rollers 53 is an arc-shaped surface.

[0032] In some embodiments, a group of rotation limiting components 6 includes a second connecting seat 61, two limiting clamps 62 and a second annular plate 63. The second connecting seat 61 is fixed to the base 1 by bolts. The second annular plate 63 is detachably connected to the rotating seat 4. The two limiting clamps 62 are symmetrically arranged on the second connecting seat 61 and are slidably supported on the two side surfaces of the second annular plate 63.

[0033] In some embodiments, the second annular plate 63 is a semicircular plate, and a second slot 630 adapted to the rotating seat 4 is opened at the upper end of the second annular plate 63 . The rotating seat 4 is disposed in the second slot 630 and connected to the second annular plate 63 by bolts.

[0034] In some embodiments, the limiting jaw 62 has an inclined rod body, and the two rod bodies are supported on the two sides of the second annular plate 63 in an inverted "V" shape. The rotation limiting component 6 also includes a plurality of first connecting plates 64 and a plurality of second connecting plates 65. The two ends of the first connecting plate 64 are respectively hinged to the limiting jaw 62 and the locking seat 61. In the invention, the limiting jaw 62 is hinged to the second connecting seat 610 through the two first connecting plates 64. The two ends of the second connecting plate 65 are respectively hinged to the limiting jaw 62 and the vertical linear actuator 66, so that the second connecting seat 610 and the vertical linear actuator 66 are hinged through the second connecting plate 65.

[0035] Furthermore, a vertical linear actuator 66 is provided on the locking seat 61. The vertical linear actuator 66 is provided between the two limit jaws 62 and connected to the limit jaws 62 through the second connecting plate 65. The plurality of first connecting plates 64, the plurality of second connecting plates 65, the two limit jaws 62 and the connecting column 66 form a multi-link structure. When the workpiece needs to be processed and is stationary at the required position, the vertical linear actuator 66 is pulled downward, and the limit jaws 62 are driven to shrink toward the middle through the second connecting plate 65. The second connecting seat 610 supports the first connecting plate 64, and the second annular plate 63 is firmly clamped by the limit jaws 62; and when the second annular plate 63 is needed, the vertical linear actuator 66 extends upward, and the limit jaws 62 are driven to expand to both sides through the second connecting plate 65, so that the clamp can rotate freely.

[0036] In some embodiments, the two ends of the rotating seat 4 are detachably connected with a first connecting seat 41 and a second connecting seat 42. The four-axis cam turntable 2 includes a transmission shaft, the first connecting seat 41 is fixed on the transmission shaft, and the disc brake tailstock 3 includes a driven shaft, and the second connecting seat 42 is connected to the driven shaft.

[0037] In some embodiments, the four-axis cam turntable 2 further includes a first housing 21, a driving motor 22 detachably connected to the first housing 21, and a transmission assembly disposed in the first housing 21, the transmission assembly being used for transmission between the driving motor 22 and the transmission shaft. The disc brake tailstock 3 includes a second housing, and the driven shaft is rotatably disposed in the second housing.

[0038] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to the above embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the above embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A rotary fixture, characterized in that: include: Base (1); A rotary drive assembly, comprising a four-axis cam turntable (2) and a disc brake tailstock (3) which are detachably fixed to both ends of the base (1); a rotating seat (4) rotatably connected between the four-axis cam turntable (2) and the disc brake tail seat (3) and capable of rotating under the drive of the four-axis cam turntable (2); a plurality of positioning members (40) for fastening a workpiece (7) are fixed on the rotating seat (4); A plurality of rotation limit assemblies are spaced apart on the base (1) along the length direction and supported below the rotation seat (4); the rotation limit assemblies are connected to the rotation seat (4) via bolts.

2. The rotary fixture according to claim 1, characterized in that: The rotation limiting assembly comprises a plurality of groups of support components (5) and a plurality of groups of rotation limiting components (6), wherein the plurality of groups of support components (5) and the plurality of groups of rotation limiting components (6) are alternately arranged and detachably fixed to the base (1) by bolts.

3. The rotary fixture according to claim 2, characterized in that: A group of the supporting components (5) comprises a first connecting seat (51), N roller supporting seats (52), N rollers (53) and a first annular plate (54), wherein the first connecting seat (51) is fixed to the base (1) by bolts, the N roller supporting seats (52) are fixed to the first connecting seat (51) at intervals, the first annular plate (54) is detachably connected to the rotating seat (4), the rollers (53) are rotatably arranged on the roller supporting seat (52) in a one-to-one manner, the N rollers (53) are supported below the first annular plate (54) along the circumference of the first annular plate (54) and are in rolling contact with the first annular plate (54), wherein N≥3.

4. The rotary fixture according to claim 3, characterized in that: The first annular plate (54) is a semicircular plate body, and a first clamping groove (540) adapted to the rotating seat (4) is formed at the upper end of the first annular plate (54); the rotating seat (4) is arranged in the first clamping groove (540) and connected to the first annular plate (54) by bolts; The first annular plate (54) is provided with a limiting sliding groove (541) extending in the circumferential direction, and the roller (53) is partially arranged in the limiting sliding groove (541).

5. The rotary fixture as claimed in claim 3, characterized in that: A plurality of support seats (510) are detachably fixed on the upper surface of the first connecting seat (51), the plurality of support seats (510) are distributed along the length direction of the first connecting seat (51) and the upper end surfaces of the plurality of support seats (510) form a "V"-shaped mounting surface, and the N roller support seats (52) are detachably fixed to the plurality of support seats (510) and are distributed along the mounting surface so that the surface formed by the tops of the N rollers (53) is an arc-shaped surface.

6. The rotary fixture according to claim 2, characterized in that: A set of the rotation limiting components (6) comprises a locking seat (61), two limiting clamping claws (62) and a second annular plate (63); the locking seat (61) is fixed to the base (1) by bolts; the second annular plate (63) is detachably connected to the rotation seat (4); the two limiting clamping claws (62) are symmetrically arranged on the second connection seat (610) and slidably supported on two side surfaces of the second annular plate (63).

7. The rotary fixture according to claim 6, characterized in that: The limiting clamping claw (62) has an inclined rod body, and the two rod bodies are slidably supported on the two side surfaces of the second annular plate (63) in an inverted "V" shape; The rotation limiting component (6) further comprises a plurality of first connecting plates (64) and a plurality of second connecting plates (65), wherein two ends of the first connecting plates (64) are respectively hinged to the limiting clamping claw (62) and the second connecting seat (610), and two ends of the second connecting plates (65) are respectively hinged to the limiting clamping claw (62) and the vertical linear actuator (66).

8. The rotary fixture according to claim 7, characterized in that: A vertical linear actuator (66) is provided on the locking seat (61). The vertical linear actuator (66) is arranged between the two limiting clamps (62) and is connected to the limiting clamps (62) via the second connecting plate (65). A plurality of the first connecting plates (64), a plurality of the second connecting plates (65), the two limiting clamps (62) and the vertical linear actuator (66) form a multi-link structure.

9. The rotary fixture according to any one of claims 1 to 7, characterized in that: The two ends of the rotating seat (4) are respectively detachably connected to a first connecting seat (41) and a second connecting seat (42); The four-axis cam turntable (2) comprises a transmission shaft, the first connecting seat (41) is fixed on the transmission shaft, the disc brake tail seat (3) comprises a driven shaft, and the second connecting seat (42) is connected to the driven shaft.

10. The rotary fixture according to claim 9, characterized in that: The four-axis cam turntable (2) further comprises a first housing (21), a drive motor (22) detachably connected to the first housing (21), and a transmission assembly arranged in the first housing (21), the transmission assembly being used for transmission between the drive motor (22) and the transmission shaft; The disc brake tailstock (3) comprises a second housing, and the driven shaft is rotatably arranged in the second housing.

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