Clamping tool for mechanical part

Abstract

The clamping tool for the mechanical part comprises a base, the end face of the left side of the base is fixedly connected with an installation frame, a moving groove is formed in the end face of the right side of the base in a penetrating mode, a moving seat is movably arranged in the moving groove, the upper end of the moving seat is fixedly connected with a device plate, and the outer wall of the device plate is arranged to be circular. A plurality of adjusting grooves are formed in the circumference of the outer wall of the device plate, connecting rods are fixedly connected to the bottoms in the adjusting grooves, clamping plates are slidably connected to the outer walls of the connecting rods, and a sliding assembly for driving the clamping plates to slide synchronously is installed on the outer wall of the device plate. The V-shaped grooves of the first clamping block and the second clamping block and the clamping plate are cooperatively clamped inside and outside to form a two-way positioning mechanism, during multi-point machining, inner supporting positioning of the clamping plate and accurate feeding of the moving seat work cooperatively, a workpiece can continuously move without being completely released, and the machining efficiency is improved. And therefore, the problem that the clamping precision is influenced by repeated clamping of a traditional tool is avoided, and the machining quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of clamping tooling technology, and in particular to a clamping tooling for mechanical parts. Background Technology

[0002] Currently, tooling fixtures are commonly used fixing devices in the field of machining. Different tooling fixtures are needed to meet the shape, precision and other requirements of different types of workpieces. Special clamping fixtures are used to fix tubular workpieces during machining.

[0003] Existing clamping fixtures mostly use V-blocks or jaws to clamp and fix tubular workpieces. However, when machining tubular workpieces at multiple points, it is necessary to release the workpiece's limit, feed it forward, and then reposition and clamp it. During re-clamping, the workpiece may undergo axial or radial displacement, affecting the clamping accuracy and reducing the machining quality. Therefore, it is necessary to propose a clamping fixture for mechanical parts to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing a clamping fixture for mechanical parts.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A clamping fixture for mechanical parts includes a base. A mounting bracket is fixedly connected to the left end face of the base. A clamping block one and a clamping block two are disposed between the mounting bracket and the end face of the base. V-shaped grooves are formed on the sides of the clamping blocks one and two that are close to each other. A moving groove is formed through the right end face of the base. A moving seat is movably disposed in the moving groove. A device plate is fixedly connected to the upper end of the moving seat. The outer wall of the device plate is circular. Multiple sets of adjustment grooves are formed around the circumference of the outer wall of the device plate. A connecting rod is fixedly connected to the bottom of each of the multiple sets of adjustment grooves. A clamping plate is slidably connected to the outer wall of the connecting rod. A sliding assembly for driving the multiple sets of clamping plates to slide synchronously is installed on the outer wall of the device plate.

[0007] Preferably, the sliding assembly includes a threaded rod II rotatably connected to the axis of the device plate, a slider is threadedly connected to the threaded section of the threaded rod II, and multiple sets of connecting plates are rotatably connected to the outer wall of the slider. The number of the multiple sets of connecting plates is the same as the number of the multiple sets of clamping plates, and their positions correspond one-to-one. The multiple sets of connecting plates are rotatably connected to their adjacent clamping plates.

[0008] Preferably, a hydraulic cylinder is fixedly connected to the end face of the mounting bracket, and the telescopic end of the hydraulic cylinder passes through the mounting bracket and is fixedly connected to the top surface of the clamping block.

[0009] Preferably, the moving groove inner wall is rotationally connected with a threaded rod one, and the moving seat is threadedly connected on a threaded segment of the threaded rod one.

[0010] Preferably, the moving groove inner wall is rotationally connected with a threaded rod one, and the moving seat is threadedly connected on a threaded segment of the threaded rod one.

[0011] Preferably, the base side wall is fixedly connected with a servo motor one, the device plate side wall is fixedly connected with a servo motor two, the servo motor one and the servo motor two output shafts are coaxially fixedly connected with a threaded rod two and the threaded rod one respectively, and the threaded rod two end portion is fixedly connected with a limiting block.

[0012] The utility model has the following beneficial effects:

[0013] 1. The utility model discloses a V-shaped groove of clamp block one and clamp block two and the inside and outside cooperation of clamping plate form bidirectional positioning mechanism, when processing in many points, the inside support positioning of clamping plate and the accurate feed of moving seat work together, and the workpiece can be continuously moved without completely releasing, thereby avoiding the problem that the traditional tooling is influenced by repeated clamping and the clamping precision is influenced, thereby ensuring the processing quality.

[0014] 2. The utility model discloses a threaded rod two, sliding block and other devices, by the rotation of threaded rod two, a plurality of clamping plates can be synchronously expanded or contracted, can be adapted to tubular workpieces of different inner diameters, improve the flexibility of the whole device when using, and the clamping plate can avoid unilateral stress concentration through uniform distribution design. DRAWINGS

[0015] Figure 1 The utility model provides a structure schematic view of clamping tool for mechanical part;

[0016] Figure 2 The utility model discloses a structure schematic view of clamping tool for mechanical part; Figure 1 Structure schematic view.

[0017] Figure 3 The utility model discloses a structure schematic view of clamping tool for mechanical part; Figure 1 Device plate structure schematic view.

[0018] Fig. 1, base;2, mounting frame;3, clamp block one;4, clamp block two;5, hydraulic oil cylinder;6, moving groove;7, threaded rod one;8, limiting rod;9, servo motor one;10, moving seat;11, device plate;12, adjusting groove;13, connecting rod;14, clamping plate;15, threaded rod two;16, limiting block;17, sliding block;18, link plate;19, servo motor two. PREFERRED EMBODIMENT

[0019] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0020] With reference to Figures 1-3 A clamping tool for mechanical parts, comprising a base 1, a mounting frame 2 is fixedly connected to the left end face of the base 1, a clamping block one 3 and a clamping block two 4 are arranged between the mounting frame 2 and the end face of the base 1, V-shaped grooves are formed on the surfaces of the clamping block one 3 and the clamping block two 4 close to each other, a moving groove 6 is formed through the right end face of the base 1, a moving seat 10 is movably arranged in the moving groove 6, a device plate 11 is fixedly connected to the upper end of the moving seat 10, the outer wall of the device plate 11 is circularly arranged, a plurality of adjusting grooves 12 are formed in the outer wall of the device plate 11, a connecting rod 13 is fixedly connected to the bottom of each adjusting groove 12, a clamping plate 14 is slidably connected to the outer wall of the connecting rod 13, and a sliding assembly is arranged on the outer wall of the device plate 11 to drive the synchronous sliding of the plurality of clamping plates 14.

[0021] Specifically, when clamping and positioning the tubular workpiece, the V-shaped grooves on the outer walls of the clamping block one 3 and the clamping block two 4 are used for clamping and positioning, and the plurality of clamping plates 14 are unfolded to further clamp and position the tubular workpiece from the inner side of the end portion of the tubular workpiece. The clamping block one 3 and the clamping block two 4 mainly play a clamping role, and when clamping at multiple points, the clamping block one 3 and the clamping block two 4 are released from the positioning, while the plurality of clamping plates 14 maintain the positioning posture of the workpiece. In cooperation with the movement of the moving seat 10, the workpiece can be fed forward, and displacement of the workpiece during re-clamping is avoided.

[0022] The sliding assembly comprises a threaded rod two 15 rotatably connected to the axis of the device plate 11, a sliding block 17 threadedly connected to the threaded segment of the threaded rod two 15, a plurality of link plates 18 rotatably connected to the outer wall of the sliding block 17, the number of the plurality of link plates 18 being consistent with the number of the plurality of clamping plates 14, and the positions of the plurality of link plates 18 corresponding to the positions of the plurality of clamping plates 14 one by one, and the plurality of link plates 18 are respectively rotatably connected to the adjacent clamping plates 14.

[0023] Specifically, the rotation of the threaded rod two 15 drives the axial movement of the sliding block 17, and the hinged linkage of the link plates 18 and the clamping plates 14 ensures the synchronous radial unfolding or contraction of the plurality of clamping plates 14, which is suitable for tubular workpieces with different inner diameters, and the clamping process has no unilateral stress concentration, avoiding deformation of the workpiece.

[0024] The end face of the mounting frame 2 is fixedly connected to a hydraulic oil cylinder 5, and the end portion of the telescopic end of the hydraulic oil cylinder 5 is fixedly connected to the top surface of the clamping block two 4 through the mounting frame 2.

[0025] Specifically, the self-locking property of the hydraulic oil cylinder 5 ensures that the clamping block one 3 and the clamping block two 4 maintain constant clamping force during processing, preventing loosening of clamping due to vibration.

[0026] A threaded rod one 7 is rotationally connected to the inner wall of the moving groove 6, and the moving seat 10 is threadedly connected to a threaded section of the threaded rod one 7.

[0027] Specifically, the threaded rod one 7 is threadedly matched with the moving seat 10, and the precise linear feeding of the moving seat 10 is realized by rotating the threaded rod one 7.

[0028] Two groups of limiting rods 8 are fixedly connected to the inner wall of the moving groove 6 and are symmetrically arranged, the moving seat 10 is slidingly connected to the outer wall of the two groups of limiting rods 8, the side wall of the clamping plate 14 is in abutting contact with the inner side wall of the adjusting groove 12, the side wall of the base 1 is fixedly connected with a servo motor one 9, the side wall of the device plate 11 is fixedly connected with a servo motor two 19, the output shafts of the servo motor one 9 and the servo motor two 19 are coaxially and fixedly connected with a threaded rod two 15 and the threaded rod one 7 respectively, and the end portion of the threaded rod two 15 is fixedly connected with a limiting block 16.

[0029] Specifically, the limiting rods 8 limit the moving direction of the moving seat 10, and ensure that there is no deflection or inclination in the feeding process.

[0030] In the utility model, when the device is used, the operator first places the tubular workpiece in the V-shaped groove between the clamping block one 3 and the clamping block two 4. The clamping block two 4 is driven to move downward by the hydraulic oil cylinder 5, cooperates with the clamping block one 3 to clamp the outer wall of the workpiece, and realizes radial positioning by the V-shaped groove. At this time, the servo motor two 19 is started, drives the threaded rod two 15 to rotate, drives the sliding block 17 to move along the axial direction, through the hinged linkage of the multiple groups of link plates 18, forces the clamping plate 14 to expand radially along the adjusting groove 12, applies uniform inside supporting force from the inside of the end portion of the workpiece, forms inside and outside bidirectional clamping, and ensures that the workpiece does not deviate in the axial direction or the radial direction in the machining process.

[0031] When multiple point machining is carried out, the operator controls the threaded rod one 7 to rotate by the servo motor one 9, drives the moving seat 10 to accurately and linearly feed along the limiting rod 8, at this time, the hydraulic oil cylinder 5 releases the clamping of the clamping block one 3 and the clamping block two 4, but the clamping plate 14 still maintains the inside supporting positioning state to the workpiece. Due to the positioning effect of the clamping plate 14, the workpiece does not need to be completely released in the feeding process, can move forward synchronously with the moving seat 10, and avoids the repeated positioning error caused by repeated clamping of the traditional tooling.

[0032] When the workpiece moves to the next machining point, the hydraulic oil cylinder 5 drives the clamping block one 3 and the clamping block two 4 to clamp the outer wall of the workpiece again, and through the closed loop control of the servo motor two 19, the expansion diameter of the clamping plate 14 can be adapted to the tubular workpiece with different inner diameters, and the clamping force is uniformly distributed through the equal-arm lever principle of the link plate 18, avoiding the deformation of the thin-walled pipe caused by unilateral stress concentration.

[0033] In the processing, the clamping plate 14 side wall always and the adjusting groove 12 inner wall are in close contact, form double guide mechanism, further restrain the radial swing of clamping plate 14, ensure the stability of inner support positioning.

[0034] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art in the technical range disclosed by the present application, according to the technical scheme and the utility model concept of the present application, equivalent replacement or change, should be covered in the protection scope of the present application.

Claims

1. A clamping tool for mechanical parts, comprising a base (1), characterized in that, The left end face of the base (1) is fixedly connected with a mounting rack (2), clamping block one (3) and clamping block two (4) are arranged between the mounting rack (2) and the end face of the base (1), V-shaped grooves are formed in the faces of the clamping block one (3) and the clamping block two (4) close to each other, a moving groove (6) is formed through the right end face of the base (1), a moving seat (10) is movably arranged in the moving groove (6), a device plate (11) is fixedly connected to the upper end of the moving seat (10), the outer wall of the device plate (11) is circular, a plurality of adjusting grooves (12) are formed in the outer wall of the device plate (11), a connecting rod (13) is fixedly connected to the bottom of each adjusting groove (12), a clamping plate (14) is slidably connected to the outer wall of the connecting rod (13), and a sliding assembly is arranged on the outer wall of the device plate (11) to drive the synchronous sliding of the plurality of clamping plates (14).

2. The holding tool for a mechanical member according to claim 1, wherein The sliding assembly comprises a threaded rod two (15) rotatably connected to the axis of the device plate (11), a sliding block (17) threadedly connected to the threaded segment of the threaded rod two (15), a plurality of link plates (18) rotatably connected to the outer wall of the sliding block (17), the number of the plurality of link plates (18) is consistent with the number of the plurality of clamping plates (14), and the positions of the plurality of link plates (18) correspond one by one to the positions of the plurality of clamping plates (14), and the plurality of link plates (18) are rotatably connected to the adjacent clamping plates (14) respectively.

3. The holding tool for a mechanical member according to claim 2, wherein The end face of the mounting rack (2) is fixedly connected with a hydraulic oil cylinder (5), and the top surface of the clamping block two (4) is fixedly connected with the telescopic end of the hydraulic oil cylinder (5).

4. The holding tool for a machine part according to claim 3, wherein A threaded rod one (7) is rotatably connected to the inner wall of the moving groove (6), and the moving seat (10) is threadedly connected to the threaded segment of the threaded rod one (7).

5. The holding tool for a machine part according to claim 4, wherein Two groups of limiting rods (8) are fixedly connected to the inner wall of the moving groove (6) and are symmetrically arranged, the moving seat (10) is slidably connected to the outer wall of the two groups of limiting rods (8), and the side wall of the clamping plate (14) is in contact with the inner side wall of the adjusting groove (12).

6. The holding tool for a machine part according to claim 5, wherein A servo motor one (9) is fixedly connected to the side wall of the base (1), a servo motor two (19) is fixedly connected to the side wall of the device plate (11), the output shafts of the servo motor one (9) and the servo motor two (19) are coaxially fixedly connected with the threaded rod two (15) and the threaded rod one (7) respectively, and the end of the threaded rod two (15) is fixedly connected with a limiting block (16).

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