Precise manual center frame convenient to use

Abstract

The utility model relates to the technical field of manual center frames, and discloses a precise manual center frame convenient to use, which comprises a clamping mechanism and is characterized in that the clamping mechanism is connected with a supporting arm, a base is arranged below the supporting arm, a limiting column is arranged in the base, and the limiting column is connected with the clamping mechanism. A locking mechanism used for limiting rotation of the supporting arm is arranged in the base, a limiting plate is arranged in the base, the limiting plate is in threaded connection with a positioning rod, and the positioning rod is sleeved with a spring. And the locking mechanism is installed in the base, the locking mechanism is matched with the limiting column to position rotation of the supporting arm, the opening direction of the clamped workpiece can be freely adjusted, the carrying height and distance of workers are reduced, and therefore the labor intensity of the workers is reduced.

Description

Technical Field

[0001] This utility model relates to the field of manual center support technology, specifically a precision manual center support that is easy to use. Background Technology

[0002] Precision manual center rests are key auxiliary devices used in machine tool processing for radially supporting rotating workpieces, especially suitable for long shafts. Existing precision manual center rests generally adopt the three-point centering principle, driving three sets of support arms to move synchronously by manually rotating the adjusting screw to ensure that the workpiece axis coincides with the machine tool spindle. However, because the existing manual center rests have a fixed clamping opening direction, the operator needs to move the workpiece to the clamping opening direction during the workpiece installation process before clamping it, thus increasing the labor intensity of the operator.

[0003] Therefore, we propose a user-friendly precision manual center rest. Utility Model Content

[0004] The purpose of this utility model is to provide a precision manual center frame that is easy to use, in order to solve the problem mentioned in the background art that the existing manual center frame is fixed in the direction of the workpiece opening, and the workers need to move it to the direction of the workpiece opening during the workpiece installation process and then clamp it, thereby increasing the labor intensity of the workers.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a precision manual center frame that is easy to use, including a clamping mechanism, characterized in that: the clamping mechanism is connected to a support arm, a base is provided below the support arm, a limiting post is provided inside the base, a locking mechanism for limiting the rotation of the support arm is provided inside the base, a limiting plate is provided inside the base, a positioning rod is threadedly connected to the limiting plate, and a spring is sleeved on the positioning rod.

[0006] Preferably, the locking mechanism includes a sliding block and a second spring. The second spring is sleeved on the sliding block, the sliding block tightly presses against the second spring, the sliding block tightly presses against the interior of the base, and the sliding block has magnetic attraction.

[0007] Preferably, the support arm is connected to an extension rod, and the support arm has a positioning groove for a limit post.

[0008] Preferably, the positioning rod is slidably connected to the base, and the base is rotatably connected to the extension rod.

[0009] Preferably, the extension rod has a mounting groove for a limiting plate, and the limiting plate is tightly pressed into the mounting groove by a spring.

[0010] Preferably, the limiting post is slidably connected to the inside of the base, and the limiting post is magnetically engaged with the sliding block.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This utility model has a locking mechanism installed inside the base. The locking mechanism, together with the limiting column, positions the rotation of the support arm. The opening direction of the clamping workpiece can be freely adjusted, reducing the height and distance that workers need to carry, thereby reducing the labor intensity of workers. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the cross-sectional structure of the base of this utility model;

[0014] Figure 2 This is an exploded view of the base structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the overall side view structure of this utility model;

[0016] In the diagram: 1. Clamping mechanism; 2. Support arm; 3. Base; 4. Limiting post; 5. Locking mechanism; 6. Limiting plate; 7. Positioning rod; 8. Spring; 201. Extension rod; 501. Sliding block; 502. Spring 2. Detailed Implementation

[0017] 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. Example

[0018] Please see Figures 1-3 The figure shows a user-friendly precision manual center frame, including a clamping mechanism 1. The clamping mechanism 1 is connected to a support arm 2, and a base 3 is located below the support arm 2. A limiting post 4 is located inside the base 3, and a locking mechanism 5 is located inside the base 3 to limit the rotation of the support arm 2. A limiting plate 6 is located inside the base 3, and a positioning rod 7 is threadedly connected to the limiting plate 6. A spring 8 is sleeved on the positioning rod 7. This invention, by installing a locking mechanism inside the base, and using the locking mechanism in conjunction with the limiting post to position the rotation of the support arm, allows for free adjustment of the workpiece opening direction, reducing the height and distance required for workers to handle the work, thereby reducing the labor intensity of workers.

[0019] Furthermore, the locking mechanism 5 includes a sliding block 501 and a second spring 502. The sliding block 501 is fitted with the second spring 502. The sliding block 501 tightly presses against the second spring 502 and the sliding block 501 tightly presses against the inside of the base 3. The sliding block 501 has magnetic attraction and locks the support arm through the locking mechanism, while also facilitating assembly.

[0020] Furthermore, the support arm 2 is connected to an extension rod 201, and the support arm 2 has a positioning groove for a limit post. The positioning groove for the limit post in the support arm ensures the stability of the connection between the support arm and the base.

[0021] Furthermore, the positioning rod 7 is slidably connected to the base 3, and the base 3 is rotatably connected to the extension rod 201. The base and the positioning rod work together to ensure convenient installation of the support arm and stable rotation of the extension rod.

[0022] Furthermore, the extension rod 201 has a mounting groove for a limiting plate. The limiting plate 6 is tightly pressed into the mounting groove by the spring 8. The mounting groove for the limiting plate opened on the extension rod ensures the stability of the connection between the support arm and the base.

[0023] Furthermore, the limiting post 4 is slidably connected to the inside of the base 3, and the limiting post 4 magnetically engages with the sliding block 501. The magnetic engagement between the limiting post and the sliding block facilitates assembly.

[0024] In this solution, the workflow is as follows: In the non-working state, the support arm 2 hangs naturally, and the sliding block 501 of the locking mechanism 5, under the preload of the spring 502, tightly fits the limiting groove on the inner wall of the base 3. At this time, the positioning rod 7, through the axial thrust of the spring 8, keeps the limiting plate 6 perpendicular to the tangential direction of the rotation trajectory of the support arm 2, thus forming a mechanical limit.

[0025] When the operator places the workpiece to be processed into the clamping mechanism 1, the support arm 2 is pushed radially around the rotation axis of the base 3 by manual or external drive. At this time:

[0026] The bottom inclined surface of the support arm 2 slides relative to the wedge-shaped contact surface of the sliding block 501, and the sliding block 501 overcomes the elastic force of the spring 502 and makes axial displacement along the guide groove.

[0027] The magnetic sliding block 501 and the electromagnetic adsorption module embedded in the base 3 achieve instantaneous positioning;

[0028] Under the threaded drive of the positioning rod 7, the limiting plate 6 achieves adaptive angle deflection through the buffering effect of the spring 8. When the support arm 2 reaches the preset clamping angle, the locking mechanism 5 locks the position.

[0029] The positioning pin of the sliding block 501 is embedded in the locking hole at the bottom of the support arm 2; the limiting plate 6 is pushed forward along the guide rail, shortening the swing stroke of the support arm 2, releasing the compressive potential energy of the spring 8, expanding the working range of the support arm 2, and the release button is manually pressed. The sliding block 501 is reset under the action of the second spring 502, and the positioning rod 7 is rotated in the opposite direction, so that the limiting plate 6 is separated from the rotation trajectory of the support arm 2, and the support arm 2 returns to the initial position under the action of gravity or the reset spring.

[0030] 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.

[0031] 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 user-friendly precision manual center frame, comprising a clamping mechanism (1), characterized in that: The clamping mechanism (1) is connected to a support arm (2), and a base (3) is provided below the support arm (2). A limiting post (4) is provided inside the base (3). A locking mechanism (5) for limiting the rotation of the support arm (2) is provided inside the base (3). A limiting plate (6) is provided inside the base (3). A positioning rod (7) is threadedly connected to the limiting plate (6). A spring (8) is sleeved on the positioning rod (7).

2. The easy-to-use precision manual center frame according to claim 1, characterized in that: The locking mechanism (5) includes a sliding block (501) and a second spring (502). The sliding block (501) is fitted with the second spring (502). The sliding block (501) tightly presses against the second spring (502). The sliding block (501) tightly presses against the interior of the base (3). The sliding block (501) has magnetic attraction.

3. The easy-to-use precision manual center rest according to claim 1, characterized in that: The support arm (2) is connected to an extension rod (201), and the support arm (2) has a positioning groove for a limit post.

4. The easy-to-use precision manual center rest according to claim 1, characterized in that: The positioning rod (7) is slidably connected to the base (3), and the base (3) is rotatably connected to the extension rod (201).

5. A user-friendly precision manual center rest according to claim 3, characterized in that: The extension rod (201) has a mounting groove for a limiting plate, and the limiting plate (6) is pressed tightly against the mounting groove by a spring (8).

6. The easy-to-use precision manual center rest according to claim 1, characterized in that: The limiting post (4) is slidably connected to the inside of the base (3), and the limiting post (4) is magnetically engaged with the sliding block (501).

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