Fixture quick-change positioning tool

Abstract

The utility model discloses a fixture quick-change positioning tool. The fixture quick-change positioning tool is characterized in that fixing bottom feet are arranged at the bottom of a platform main body and are used for mounting and fixing; a guide groove is formed in the upper surface of the platform body, and the guide groove is matched with a side guide plate on the side of the clamp and used for restraining the initial direction when the clamp is pushed in. A positioning concave block is arranged on the platform main body, and the positioning concave block is matched with a positioning convex block on the clamp side and is used for posture fine positioning and resistance reduction guiding in the clamp pushing-in process; a universal ball bearing is mounted on the platform main body through a positioning frame; and a positioning pin hole is formed in the platform main body. Guide groove coarse positioning and trapezoidal concave-convex block slope fine positioning are adopted, so that the precision is high, and resistance is reduced; the matrix type universal ball bearing converts sliding friction into rolling friction, the operation is labor-saving, and the pushing is smooth; the buffer absorbs impact, the proximity switch is linked with the positioning pin for automatic locking, safety is achieved, and the automation degree is high; the multi-point fixing feet are connected with the side guide plates, so that the vibration resistance is high; the modular design can quickly adapt to different clamps, and quick-wear parts are convenient to replace.

Description

Technical Field

[0001] This utility model relates to the field of positioning tooling technology, specifically a quick-change positioning tooling for a clamp. Background Technology

[0002] In industrial fields such as machining and assembly, fixtures are key tooling for workpiece positioning and clamping. Their replacement efficiency and positioning accuracy directly affect production efficiency and processing quality. Traditional fixture positioning tooling generally suffers from the following technical bottlenecks:

[0003] Traditional fixture positioning tools suffer from problems such as low positioning accuracy, cumbersome operation (high sliding friction resistance), easy rigid collision at the pushing end, insufficient automated detection, and poor installation stability, which affect production efficiency and equipment life. Utility Model Content

[0004] The purpose of this utility model is to provide a quick-change positioning fixture to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a quick-change positioning fixture, comprising:

[0006] The platform body has fixed feet at the bottom for installation and fixation.

[0007] The guiding and positioning unit has a guide groove on the upper surface of the platform body, which is adapted to the side guide plate on the clamp side for initial directional constraint when the clamp is pushed in; the platform body has a positioning recess, which is adapted to the positioning protrusion on the clamp side for precise posture positioning and drag reduction guidance during the clamp pushing process.

[0008] The platform body is equipped with a universal ball bearing mounted on the support drag reduction unit via a positioning frame. This bearing supports the pushed-in clamp and converts sliding friction into rolling friction.

[0009] The locking unit has a positioning pin hole on the platform body for inserting a positioning pin to rigidly lock the position of the clamp.

[0010] Preferably, a buffer is provided on the side of the positioning recess to absorb the impact energy of the clamp being pushed in and to avoid rigid collision.

[0011] Preferably, the side of the positioning recess is provided with a proximity switch to detect whether the clamp is in place, so as to trigger the subsequent action of inserting the positioning pin.

[0012] Preferably, the platform body is provided with fixed feet on both sides, and the fixed feet are connected to the side guide plates to enhance the installation stability of the platform.

[0013] Preferably, the positioning protrusion is a trapezoidal protrusion and the positioning concave block is a matching trapezoidal groove, which achieves the guiding and drag-reducing function through the inclined surface cooperation.

[0014] Preferably, the universal ball bearings are arranged in a matrix on the positioning frame to evenly support the bottom of the clamp and ensure smooth pushing.

[0015] Compared with the prior art, the advantages of this utility model are: the guide groove provides coarse positioning and the trapezoidal concave-convex block inclined surface provides fine positioning, resulting in high accuracy and reduced drag; the matrix universal ball bearing converts sliding friction into rolling friction, making operation easier and pushing smoother; the buffer absorbs impact, and the proximity switch linkage positioning pin automatically locks, ensuring safety and a high degree of automation; the multi-point fixed feet are connected to the side guide plate, providing strong vibration resistance; the modular design allows for quick adaptation to different fixtures, and the replacement of vulnerable parts is convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of a local structure in the image;

[0018] Figure 3 This is a schematic diagram of the guide groove structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the positioning pin hole structure of this utility model.

[0020] In the diagram: 1. Fixed foot, 2. Positioning protrusion, 3. Positioning recess, 4. Universal ball bearing, 5. Positioning frame, 6. Guide groove, 7. Positioning pin hole, 8. Proximity switch, 9. Buffer, 10. Side guide plate, 11. Fixed foot, 12. Platform body. Detailed Implementation

[0021] 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.

[0022] Please see Figures 1-4This utility model provides a technical solution: a quick-change positioning fixture, comprising: a platform body 12, a guiding and positioning unit, a support and drag-reducing unit, and a locking unit; the platform body 12 has a fixed base 1 at the bottom for installation and fixation; the guiding and positioning unit includes a guide groove 6 on the upper surface of the platform body 12, which is adapted to the side guide plate 10 on the fixture side for initial directional constraint when the fixture is pushed in; the platform body 12 has a positioning recess 3, which is adapted to the positioning protrusion 2 on the fixture side for precise positioning and drag reduction guidance during the fixture push-in process; the positioning protrusion 2 is a trapezoidal protrusion, and the positioning recess 3 is a matching trapezoidal groove, which achieves the guiding and drag-reducing function through the inclined surface cooperation; the support and drag-reducing unit includes a universal ball bearing 4 mounted on the platform body 12 through a positioning frame 5 for supporting the pushed-in fixture and converting sliding friction into rolling friction; the locking unit includes a positioning pin hole 7 on the platform body 12 for inserting a positioning pin to rigidly lock the fixture position.

[0023] More specifically, a buffer 9 is provided on the side of the positioning recess 3 to absorb the impact energy of the end of the clamp being pushed in, so as to avoid rigid collision. A proximity switch 8 is provided on the side of the positioning recess 3 to detect whether the clamp is in place, so as to link the subsequent action of the positioning pin insertion.

[0024] More specifically, the platform body 12 is provided with fixed feet 11 on both sides, which are connected to the side guide plate 10 to enhance the installation stability of the platform. The universal ball bearings 4 are distributed in a matrix on the positioning frame 5 to evenly support the bottom of the clamp and ensure smooth pushing.

[0025] More specifically, the upper surface of the platform body 12 is provided with a guide groove 6, which extends along the clamping pushing direction, and its cross-sectional shape is adapted to the side guide plate 10 on the side of the clamp (e.g., Figure 3 As shown, when the fixture is pushed in, the side guide plate 10 is embedded in the guide groove 6, forming a preliminary directional constraint, limiting the lateral displacement of the fixture, and achieving rapid centering.

[0026] More specifically, the platform body 12 is provided with a positioning recess 3, and the bottom of the corresponding fixture is provided with a positioning protrusion 2, the two being in a trapezoidal concave-convex fit (e.g. Figure 2 As shown); the positioning protrusion 2 is a trapezoidal protrusion, and the positioning concave block 3 is a matching trapezoidal groove. With the cooperation of the inclined surface (preferably with an inclination angle of 15°-30°), during the process of pushing the fixture in, the inclined surface guides the fixture to automatically correct its posture, while decomposing the pushing force, reducing contact resistance, and achieving precise positioning and drag reduction guidance.

[0027] More specifically, the support and drag reduction unit reduces pushing resistance and evenly bears the weight of the fixture by replacing sliding friction with rolling friction: multiple universal ball bearings 4 are installed on the platform body 12 via positioning frames 5, and the universal ball bearings 4 are distributed in a matrix on the positioning frames 5 (e.g., Figure 1 , Figure 4 As shown), it covers the main support area at the bottom of the clamp; when the clamp is pushed in, the balls of the universal ball bearing 4 contact the bottom of the clamp, converting the traditional sliding friction into rolling friction, so that a single person can easily push the heavy clamp, while uniform support avoids tilting caused by uneven local force.

[0028] More specifically, the locking unit is used to rigidly fix the position of the clamp; the platform body 12 is provided with positioning pin holes 7 (such as...). Figure 4 As shown in the figure, the position of the locating pin hole 7 corresponds to the pin hole at the bottom of the fixture; after the fixture is pushed into place, the locating pin is inserted into the locating pin hole 7 by manual or automated means to form a mechanical lock and ensure that the fixture does not move during the processing.

[0029] More specifically, the buffer 9 is located on the side of the positioning recess 3 (near the end of the clamp push-in position). Figure 2 As shown), preferably a spring buffer or a hydraulic buffer, when the fixture is pushed into place, the buffer 9 absorbs the impact energy to avoid rigid collision between the fixture and the platform body 12, thus protecting the tooling and fixture structure.

[0030] More specifically, a proximity switch 8 is installed on the side of the positioning recess 3 (e.g., Figure 2 As shown), its sensing end is aligned with the side of the fixture. When the fixture is pushed into the precise positioning position, the proximity switch 8 detects the fixture's positioning signal and controls subsequent actions (such as automatic insertion of the positioning pin, illumination of the indicator light, etc.) to achieve automated process connection.

[0031] Its detailed connection method is a well-known technology in this field. The following mainly introduces the working principle and process, and the specific work is as follows.

[0032] When replacing the fixture, first align the fixture side guide plate 10 with the guide groove 6 of the platform body 12, and push the fixture in along the guide groove 6. During this process, the universal ball bearing 4 supports the bottom of the fixture, and the rolling friction significantly reduces the pushing resistance. When the positioning protrusion 2 contacts the trapezoidal inclined surface of the positioning concave block 3, the inclined surface guides the fixture to automatically correct its posture and complete the precise positioning. At the end of the fixture is pushed in, the buffer 9 absorbs the impact energy, and at the same time, the proximity switch 8 detects the positioning signal, triggering the positioning pin to insert into the positioning pin hole 7, thereby achieving rigid locking of the fixture. To disassemble, simply pull out the positioning pin and push the fixture in the reverse direction to complete the replacement.

[0033] 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 quick-change positioning fixture, characterized in that, include: The platform body (12) has fixed feet (1) at the bottom for installation and fixation; The guiding and positioning unit has a guide groove (6) on the upper surface of the platform body (12). The guide groove (6) is adapted to the side guide plate (10) on the clamp side and is used for the initial directional constraint when the clamp is pushed in. The platform body (12) has a positioning recess (3) on it. The positioning recess (3) is adapted to the positioning protrusion (2) on the clamp side and is used for the precise positioning of the attitude and drag reduction guidance during the clamp pushing process. The platform body (12) is equipped with a universal ball bearing (4) via a positioning frame (5) to support the pushed-in clamp and convert sliding friction into rolling friction. The locking unit has a positioning pin hole (7) on the platform body (12) for inserting a positioning pin to rigidly lock the position of the clamp.

2. The quick-change positioning fixture according to claim 1, characterized in that: A buffer (9) is provided on the side of the positioning recess (3) to absorb the impact energy of the clamp being pushed into the end and avoid rigid collision.

3. The quick-change positioning fixture according to claim 2, characterized in that: The side of the positioning recess (3) is provided with a proximity switch (8) to detect whether the clamp is in place, so as to trigger the subsequent action of inserting the positioning pin.

4. The quick-change positioning fixture according to claim 3, characterized in that: The platform body (12) is provided with fixed feet (11) on both sides. The fixed feet (11) are connected to the side guide plate (10) to enhance the installation stability of the platform.

5. A quick-change positioning fixture according to claim 4, characterized in that: The positioning protrusion (2) is a trapezoidal protrusion, and the positioning concave block (3) is a matching trapezoidal groove. The guide and resistance reduction functions are achieved through the inclined surface cooperation.

6. A quick-change positioning fixture according to claim 5, characterized in that: The universal ball bearings (4) are distributed in a matrix on the positioning frame (5) to evenly support the bottom of the clamp and ensure smooth pushing.

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