Universal tool for positioning and fast switching of multiple types of shafts

Abstract

The utility model relates to the field of production and processing of forklift parts, and discloses a universal tool for positioning and fast switching of multiple types of shafts, which comprises a base (1), a fixed positioning sleeve (2), a movable positioning sleeve (3) and a pressing plate (4), the base (1) is provided with a positioning hole, the fixed positioning sleeve (2) is arranged in the positioning hole, and the movable positioning sleeve (3) is coaxially arranged in the fixed positioning sleeve (2); wherein an internal thread is formed on the inner wall of the fixed positioning sleeve (2), an external thread is formed on the outer wall of the movable positioning sleeve (3), an inner hexagonal cavity is formed in the movable positioning sleeve (3) along the central axis, and the movable positioning sleeve (3) can move up and down in the fixed positioning sleeve (2) through rotation; and the pressing plate (4) is arranged above the movable positioning sleeve (3) and is arranged to be capable of extruding and fixing a shaft positioned in the positioning sleeve. The universal tool is simple in structure and convenient to operate, the problem of frequent production change is solved, and the production efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a forklift spare part production and processing technical field, specifically, a kind of general tool for the positioning of multiple varieties shafts is switched quickly. BACKGROUND

[0002] Various shaft parts are provided on the forklift hoisting system, which are used to connect various components on the forklift. The shaft parts are characterized by a large variety of types, and many products have small batches. During machining, frequent production changes are required. To address this situation, the existing processing scheme is to configure a special tool for parts with the same positioning size. However, this scheme results in excessive number of tools, frequent production changes, low production efficiency, and serious impact on production.

[0003] Therefore, there is an urgent need to provide a more versatile general tool to solve the above technical problems. INVENTION CONTENTS

[0004] The utility model aims to overcome the problems of excessive number of special tools, low production efficiency and frequent production changes in the prior art, and provides a general tool for the positioning of multiple varieties shafts, which is simple in structure and easy to operate, solves the problem of frequent production changes, and improves production efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides a general tool for the positioning of multiple varieties shafts, which comprises a base, a fixed positioning sleeve, a movable positioning sleeve and a pressing plate. The base has a positioning hole, the fixed positioning sleeve is arranged in the positioning hole, and the movable positioning sleeve is coaxially arranged in the fixed positioning sleeve. Wherein,

[0006] The inner wall of the fixed positioning sleeve is formed with internal threads, and the outer wall of the movable positioning sleeve is formed with external threads. Furthermore, an internal hexagonal cavity is formed in the movable positioning sleeve along the central axis, and the movable positioning sleeve can move up and down in the fixed positioning sleeve by rotating. The pressing plate is arranged above the movable positioning sleeve and is configured to press the shaft positioned in the positioning sleeve.

[0007] Preferably, the inner wall of the fixed positioning sleeve is shaped to fit the outer wall of the movable positioning sleeve.

[0008] Preferably, the internal threads are located on the lower section of the inner wall of the fixed positioning sleeve, and the external threads are located on the middle section of the outer wall of the movable positioning sleeve.

[0009] Preferably, a groove is formed between the internal hexagonal cavity of the movable positioning sleeve and the top end face of the movable positioning sleeve, and the groove is configured to accommodate the shaft head of the multiple varieties shaft.

[0010] Preferably, the fixed positioning sleeve has a positioning structure above the movable positioning sleeve, which is configured to cooperate with the shaft shoulder of the multiple varieties shaft for shoulder positioning.

[0011] Preferably, the positioning structure is annular and the inner side is circular.

[0012] Preferably, the top end surface of the positioning structure is concave and has a plurality of circular-arc-shaped notches.

[0013] Preferably, the plurality of circular-arc-shaped notches are evenly distributed in the circumferential direction.

[0014] Preferably, the pressing plate is connected to a pneumatic cylinder, a hydraulic cylinder or a mechanical arm.

[0015] Preferably, the edge of the fixed positioning sleeve in contact with the shaft is chamfered.

[0016] According to the above technical solution, the fixed positioning sleeve is installed on the base, and the movable positioning sleeve is threadedly connected to the lower section of the fixed positioning sleeve through the external thread of the middle section. The outer diameter of the movable positioning sleeve is matched with the inner hole of the fixed positioning sleeve to ensure the position, so that the movable positioning sleeve can rotate up and down in the hole of the fixed positioning sleeve. Figure 3 and Figure 4 When positioning the A-type shaft or the B-type shaft, the pressing plate is removed, the A-type shaft or the B-type shaft is directly placed into the positioning space formed by the fixed positioning sleeve and the movable positioning sleeve, the lower outer diameter and the shoulder surface of the shaft are pre-positioned, and finally, the pressing plate is moved to press and fix the top end of the shaft, so that the A-type shaft or the B-type shaft is tightly positioned. Figure 5 When positioning the C-type shaft, the internal hexagonal wrench is used to rotate the internal hexagonal of the movable positioning sleeve, so that the movable positioning sleeve is lowered to release the positioning space, and then the C-type shaft is placed into the positioning space, and the outer diameter shoulder surface of the C-type shaft is positioned by the inner hole of the fixed positioning sleeve. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the installation and structural schematic view of the universal tool for quick switching of positioning of multiple types of shafts according to the present application;

[0018] Figure 2 is the installation schematic view of the fixed positioning sleeve and the movable positioning sleeve in the universal tool for quick switching of positioning of multiple types of shafts according to the present application;

[0019] Figure 3 is the schematic view of positioning of the A-type shaft by using the universal tool for quick switching of positioning of multiple types of shafts according to the present application;

[0020] Figure 4 is the schematic view of positioning of the B-type shaft by using the universal tool for quick switching of positioning of multiple types of shafts according to the present application;

[0021] Figure 5It is the schematic diagram of the universal tool positioning C type shaft for the multi-variety shaft positioning quick switching provided by the utility model.

[0022] Mark explanation

[0023] 1-base 2-fixed positioning sleeve

[0024] 3-movable positioning sleeve 4-pressing plate

[0025] 6-groove 7-circular-arc-shaped notch

[0026] 501-A type shaft 502-B type shaft

[0027] 503-C type shaft Specific embodiments

[0028] The specific embodiments described herein are intended to be illustrative only and are not intended to limit the present utility model.

[0029] In the utility model, under the condition of not making opposite statement, the orientation words such as " upper, middle, lower, top, bottom, inner and outer " contained in the term only represent the orientation of the term in the normal use state, or the common name understood by the person skilled in the art, and should not be regarded as the limitation of the term.

[0030] Referring to Figure 1 And Figure 2 The utility model provides a kind of universal tool for multi-variety shaft positioning quick switching, the universal tool includes base 1, fixed positioning sleeve 2, movable positioning sleeve 3 and pressing plate 4, base 1 is equipped with positioning hole, and fixed positioning sleeve 2 is equipped in positioning hole, movable positioning sleeve 3 is coaxially arranged in fixed positioning sleeve 2;Wherein,

[0031] The inner wall of fixed positioning sleeve 2 is formed with internal thread, the outer wall of movable positioning sleeve 3 is formed with external thread, and the inside of movable positioning sleeve 3 is formed with internal hexagonal cavity along center axis, movable positioning sleeve 3 can move position by rotating up and down in the inside of fixed positioning sleeve 2;Pressing plate 4 is arranged above movable positioning sleeve 3 and is arranged to be able to extrude the shaft fixed in positioning sleeve.

[0032] By the above technical scheme, fixed positioning sleeve 2 is installed on base 1, movable positioning sleeve 3 is threadedly connected with the internal thread of lower section of fixed positioning sleeve 2 by the external thread of middle section thereof.The outer diameter of movable positioning sleeve 3 is positioned with the inner hole of fixed positioning sleeve 2 to ensure position, so that movable positioning sleeve 3 can rotate up and down in the hole of fixed positioning sleeve 2. Figure 3 And Figure 4As shown in FIG. 1 and FIG. 2, when positioning the A-type shaft 501 or the B-type shaft 502, the pressing plate 4 is removed, the A-type shaft 501 or the B-type shaft 502 is directly placed into the positioning space formed by the cooperation of the fixed positioning sleeve 2 and the movable positioning sleeve 3, the lower outer diameter and the shoulder surface of the shaft are pre-positioned, finally, the pressing plate 4 is moved to extrude and fix the top end of the shaft, realizing tight fixing and positioning. Figure 5 When positioning the C-type shaft 503 (see FIG. 3), the internal hex of the movable positioning sleeve 3 is first rotated by using the internal hex wrench, so that the movable positioning sleeve 3 is lowered to release the positioning space, then the C-type shaft 503 is placed into the positioning space, and the outer diameter shoulder surface of the C-type shaft 503 is positioned by the inner hole of the fixed positioning sleeve 2.

[0033] In the embodiment, in order to avoid the existence of a large gap between the movable positioning sleeve 3 and the fixed positioning sleeve 2, and to avoid the occurrence of the situation that other sundries in the working environment enter the gap to cause the movable positioning sleeve 3 to move unsmoothly in the fixed positioning sleeve 2, preferably, the inner wall shape of the fixed positioning sleeve 2 is set to be in close contact with the outer wall of the movable positioning sleeve 3.

[0034] In the embodiment, in order to facilitate the rotation of the internal hex of the movable positioning sleeve 3 by using the internal hex wrench, reduce the number of rotation of the internal hex wrench, and avoid unnecessary rotation and waste of physical strength, preferably, the internal thread is located at the lower section of the inner wall of the fixed positioning sleeve 2, and the external thread is located at the middle section of the outer wall of the movable positioning sleeve 3. In this way, the movable positioning sleeve 3 needs to be rotated and adjusted in position only when it is inserted into the fixed positioning sleeve 2 to a relatively deep depth, instead of being rotated continuously from the moment when the movable positioning sleeve 3 just enters the fixed positioning sleeve 2 to rotate the movable positioning sleeve 3 into the fixed positioning sleeve 2.

[0035] In the embodiment, in order to improve the practicability of the universal tool for quick switching of positioning of multiple types of shafts, so that it can be applied to the positioning operation of shafts of different models and different lengths, preferably, a groove 6 is formed between the internal hex cavity on the movable positioning sleeve 3 and the top surface of the movable positioning sleeve 3, and the groove 6 is set to be capable of accommodating the shaft head of multiple types of shafts. In this way, as shown in FIG. 1 and FIG. 2, when positioning the A-type shaft 501 or the B-type shaft 502, the shaft head of the A-type shaft 501 or the B-type shaft 502 is directly placed into the groove 6, the lower outer diameter and the shoulder surface of the shaft are pre-positioned, finally, the pressing plate 4 is moved to extrude and fix the top end of the shaft, realizing tight fixing and positioning. Figure 3 Figure 4 When positioning the C-type shaft 503 (see FIG. 3), the size of the shaft head of the C-type shaft 503 is larger than the size of the groove 6, the internal hex of the movable positioning sleeve 3 is first rotated by using the internal hex wrench, so that the movable positioning sleeve 3 is lowered to release the positioning space, then the C-type shaft 503 is placed into the positioning space, and the outer diameter shoulder surface of the C-type shaft 503 is positioned by the inner hole of the fixed positioning sleeve 2. Figure 5

[0036] ​​In the embodiment, in order to facilitate auxiliary positioning of different types of shafts, preferably, a positioning structure capable of cooperating with the shaft shoulder of various shafts to perform shoulder surface positioning is formed above the movable positioning sleeve 3 in the fixed positioning sleeve 2.

[0037] Further, in order to expand the wrapping capacity of the positioning structure on the shafts, preferably, the positioning structure is annular and the inner side is circular.

[0038] Further, in order to reduce the contact area of the positioning structure with the shafts, facilitate adjustment and pick-and-place of the shafts, preferably, the top end surface of the positioning structure is inwardly recessed to form a plurality of circular-arc-shaped notches 7.

[0039] In the embodiment, in order to facilitate machining of the notches in the positioning structure, preferably, the plurality of circular-arc-shaped notches 7 are uniformly distributed in the circumferential direction.

[0040] In the embodiment, in order to facilitate adjustment of the operation of the pressing plate 4 as needed, preferably, the pressing plate 4 is connected with a pneumatic cylinder, an oil cylinder or a mechanical arm.

[0041] In the embodiment, in order to avoid that the relatively sharp profile causes scratches, bumps or even damage to the surface of the shafts when the shafts are placed into the universal tooling, preferably, the edge of the fixed positioning sleeve 2 in contact with the shaft is chamfered.

[0042] The preferred embodiments of the utility model are described in detail above in combination with the drawings, but the utility model is not limited thereto. Within the technical concept of the utility model, the technical solutions of the utility model can be subjected to various simple modifications, including combination of various specific technical features in any suitable manner. In order to avoid unnecessary repetition, the utility model does not further describe various possible combination manners. However, these simple modifications and combinations should also be regarded as the disclosed content of the utility model and belong to the protection scope of the utility model.

Claims

1. A universal tooling fixture for quick switching of positioning for multiple types of shafts, characterized in that, The general-purpose tooling includes a base (1), a fixed positioning sleeve (2), a movable positioning sleeve (3), and a pressure plate (4). The base (1) has a positioning hole, and the fixed positioning sleeve (2) is disposed within the positioning hole. The movable positioning sleeve (3) is coaxially disposed within the fixed positioning sleeve (2). The fixed positioning sleeve (2) has an internal thread on its inner wall and the movable positioning sleeve (3) has an external thread on its outer wall. The movable positioning sleeve (3) has an internal hexagonal cavity formed along its central axis. The movable positioning sleeve (3) can move up and down inside the fixed positioning sleeve (2) by rotation. The pressure plate (4) is located above the movable positioning sleeve (3) and is configured to press and fix the shaft located inside the positioning sleeve.

2. The universal tooling for quick switching of positioning for multiple types of shafts according to claim 1, characterized in that, The inner wall shape of the fixed positioning sleeve (2) is fitted to fit the outer wall of the movable positioning sleeve (3).

3. The universal tooling for quick switching of positioning for multiple types of shafts according to claim 2, characterized in that, The internal thread is located on the lower section of the inner wall of the fixed positioning sleeve (2), and the external thread is located on the middle section of the outer wall of the movable positioning sleeve (3).

4. The universal tooling for quick switching of positioning of multiple shaft types according to claim 1, characterized in that, A groove (6) is formed between the internal hexagonal cavity on the movable positioning sleeve (3) and the top surface of the movable positioning sleeve (3), and the groove (6) is configured to accommodate shaft heads of multiple types of shafts.

5. The universal tooling for quick switching of positioning of multiple shaft types according to claim 1, characterized in that, The fixed positioning sleeve (2) has a positioning structure located above the movable positioning sleeve (3) that can cooperate with the shoulder of various types of shafts for shoulder positioning.

6. The universal tooling for quick switching of positioning for multiple types of shafts according to claim 5, characterized in that, The positioning structure is annular with a roughly circular inner surface.

7. The universal tooling for quick switching of positioning for multiple types of shafts according to claim 6, characterized in that, The top surface of the positioning structure is recessed inward to form multiple arc-shaped notches (7).

8. The universal tooling for quick switching of positioning of multiple shaft types according to claim 7, characterized in that, Multiple arc-shaped notches (7) are evenly distributed along the circumferential direction.

9. The universal tooling for quick switching of positioning of multiple shaft types according to claim 1, characterized in that, The pressure plate (4) is connected to a cylinder, a hydraulic cylinder or a robotic arm.

10. The universal tooling for quick switching of positioning for multiple types of shafts according to claim 1, characterized in that, The edge of the fixed positioning sleeve (2) that contacts the shaft is rounded.

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