Mandrel

Abstract

The utility model relates to a mandrel, relates to the mandrel technical field, including fixed seat and mandrel, the mandrel is arranged transversely, the mandrel is with fixed seat inner wall sliding fit, fixed seat inner wall is provided with a plurality of grooves at equal interval angle, the inner wall of groove is fixedly equipped with the clamping rod through the spring, and the clamping rod is connected with the fixed seat through the spring. A groove is formed in the outer wall of the mandrel, the clamping rod is in sliding fit with the inner wall of the groove, the clamping rod is movably embedded into the outer wall of the mandrel, the clamping rod is connected with a clamping cancelling mechanism, a butt joint strip is transversely and fixedly installed on the outer wall of the mandrel, and a butt joint groove matched with the butt joint strip in a matched mode is formed in the inner wall of the fixing base. And the mounting steps are simplified, so that the mandrel is more convenient to mount and dismount.

Description

Technical Field

[0001] This utility model relates to the field of mandrel technology, and in particular to a mandrel. Background Technology

[0002] A mandrel is a commonly used tool in machining, mainly used to support workpieces or as a positioning reference for workpieces. Mandrels can be used in a variety of situations, such as supporting workpieces for machining on lathes, or fixing specimens in tensile tests.

[0003] However, in existing technologies, the mandrel is prone to damage during use, and the traditional connection method makes the disassembly and replacement of the mandrel not very convenient. In addition, the length of the mandrel is fixed year after year and cannot be assembled and adjusted according to actual needs. Therefore, we propose a new type of mandrel. Utility Model Content

[0004] This invention provides a mandrel that solves the above-mentioned technical problems.

[0005] The present invention provides the following solution to the above-mentioned technical problems: A mandrel includes a fixed base and a mandrel. The mandrel is arranged laterally and slides in cooperation with the inner wall of the fixed base. The inner wall of the fixed base has multiple grooves at equal intervals. A snap-fit ​​rod is fixedly installed on the inner wall of the groove by a spring. The snap-fit ​​rod slides in cooperation with the inner wall of the groove and is movably embedded in the outer wall of the mandrel. The snap-fit ​​rod is connected to a snap-fit ​​cancellation mechanism. A mating strip is fixedly installed laterally on the outer wall of the mandrel. A mating groove that matches the mating strip is opened on the inner wall of the fixed base.

[0006] Preferably, the latching cancellation mechanism includes a rotating ring rotatably sleeved on the outer wall of the fixed base, the rotating ring being fixedly connected to the latching rod via a steel wire that movably passes through the fixed base, and the spring being movably sleeved on the outer wall of the spring.

[0007] Preferably, the outer wall of the fixing seat is provided with multiple wide slots at equal intervals, and each of the multiple wide slots corresponds to a multiple groove, and the steel wire passes through the wide slots.

[0008] Preferably, a nut is fixedly installed on the outer wall of the fixing seat.

[0009] Preferably, the mandrel end has a threaded groove.

[0010] The beneficial effects of this utility model are:

[0011] 1. By setting a snap-fit ​​rod inside the fixing seat, the snap-fit ​​rod can snap and fix the mandrel, making the installation or disassembly and replacement of the mandrel more convenient. A mating strip is set with a mating groove to achieve quick and accurate mating between the fixing seat and the mandrel. A rotating ring is set with a steel wire to control multiple snap-fit ​​rods. Rotating the rotating ring can simultaneously control and cancel the snap-fit ​​of all snap-fit ​​rods. This is convenient and practical, allowing the snap-fit ​​rods to be directly aligned with the groove on the surface of the mandrel, improving installation efficiency.

[0012] 2. By setting a threaded groove at the end of the mandrel, it can be connected and extended with other mandrels. The length of the mandrel can be adjusted as needed, making the device more versatile.

[0013] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0014] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0015] Figure 1 This utility model provides a schematic diagram of the overall structure of a mandrel;

[0016] Figure 2 A cross-sectional view of a mandrel fixing seat is provided for this utility model;

[0017] Figure 3 A schematic diagram of a rotating ring structure for a mandrel is provided for this utility model;

[0018] Figure 4 This utility model proposes a mandrel. Figure 2 Enlarged view of point A in the middle.

[0019] Legend:

[0020] 1. Fixing base; 2. Mandrel; 3. Groove; 4. Spring; 5. Connecting rod; 6. Connecting strip; 7. Connecting groove; 8. Rotating ring; 9. Steel wire; 10. Wide-mouth groove; 11. Nut; 12. Threaded groove. Detailed Implementation

[0021] The following is in conjunction with the appendix Figure 1-4The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0022] like Figure 1-4 As shown, this utility model discloses a mandrel, including a fixed base 1 and a mandrel 2. A nut 11 is fixedly installed on the outer wall of the fixed base 1, and the thread 11 is used for the installation connection of the fixed base 1. The mandrel 2 is arranged horizontally and slides with the inner wall of the fixed base 1. Multiple grooves 3 are opened at equal intervals on the inner wall of the fixed base 1. A snap-fit ​​rod 5 is fixedly installed on the inner wall of the groove 3 by a spring 4. The snap-fit ​​rod 5 slides with the inner wall of the groove 3 and is movably embedded into the outer wall of the mandrel 2. The snap-fit ​​rod 5 is connected to a snap-fit ​​cancellation mechanism. A mating strip 6 is fixedly installed horizontally on the outer wall of the mandrel 2. A mating groove 7 that matches the mating strip 6 is opened on the inner wall of the fixed base 1. This device uses multiple snap-fit ​​rods 5 to snap-fit ​​and fix the mandrel 2, replacing the traditional installation method, making the installation or disassembly of the mandrel 2 more convenient and saving time. A rotating ring 8 is set to realize the synchronous control of multiple snap-fit ​​rods 5, simplifying the operation. The end of the mandrel 2 is provided with a threaded groove 12, which facilitates the assembly and extension of multiple mandrels 2 and improves the applicability.

[0023] Specifically, the locking and unlocking mechanism includes a rotating ring 8 that is rotatably sleeved on the outer wall of the fixed base 1. The rotating ring 8 is fixedly connected to the locking rod 5 through a steel wire 9 that movably passes through the fixed base 1. The spring 4 is movably sleeved on the outer wall of the spring 4. Rotating the rotating ring 8 can directly pull the locking rod 5 to move through the steel wire 9, causing the locking rod 5 to return to the groove 3, making the installation or removal of the spindle 2 more convenient.

[0024] More specifically, the outer wall of the fixing seat 1 is provided with multiple wide slots 10 at equal intervals. Each of the multiple wide slots 10 corresponds to a pair of grooves 3. The steel wire 9 passes through the wide slots 10. The wide slots 10 facilitate the sliding passage of the steel wire 9, reduce the friction between the fixing seat 1 and the steel wire 9, and extend the service life of the steel wire 9.

[0025] Furthermore, the end of the mandrel 2 is provided with a threaded groove 12. Different mandrels 2 are provided with threaded grooves 12 or threaded posts at their ends. The combination of the threaded post and the threaded groove 12 can realize the combined extension of two mandrels 2, and the length of the mandrel 2 can be adjusted according to actual needs.

[0026] Working principle:

[0027] The rotating ring 8 indirectly drives the locking rod 5 to move through the transmission of the steel wire 9, causing the locking rod 5 to retract into the groove 3 against the force of the spring 4, thus making enough installation space for the mandrel 2. Then, the mandrel 2 is inserted into the fixed seat 1, so that the mating strip 6 on the outer wall of the mandrel 2 aligns with the mating groove 7 of the fixed seat 1, thereby ensuring that the locking rod 5 can be directly aligned with the groove on the surface of the mandrel 2. Then, the rotating ring 8 is released, and the spring 4 pushes the locking rod 5 to move out of the groove 3 and insert it into the groove on the surface of the mandrel 2, completing the installation and fixing of the mandrel 2 and simplifying the installation and connection of the mandrel 2. The threaded groove 12 at the end of the mandrel 2 can realize the mating extension of two mandrels 2, allowing the mandrel 2 to be adjusted as needed.

[0028] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A mandrel, comprising a fixed base (1) and a mandrel (2), characterized in that: The mandrel (2) is arranged horizontally and slides with the inner wall of the fixed seat (1). The inner wall of the fixed seat (1) has multiple grooves (3) at equal intervals. The inner wall of the groove (3) is fixedly installed with a snap-fit ​​rod (5) by a spring (4). The snap-fit ​​rod (5) slides with the inner wall of the groove (3). The snap-fit ​​rod (5) is movably embedded in the outer wall of the mandrel (2). The snap-fit ​​rod (5) is connected to a snap-fit ​​cancellation mechanism. The outer wall of the mandrel (2) is horizontally fixedly installed with a docking strip (6). The inner wall of the fixed seat (1) has a docking groove (7) that matches the docking strip (6).

2. A mandrel according to claim 1, characterized in that: The latching cancellation mechanism includes a rotating ring (8) that is rotatably sleeved on the outer wall of the fixed seat (1). The rotating ring (8) is fixedly connected to the latching rod (5) through a steel wire (9) that movably passes through the fixed seat (1). The spring (4) is movably sleeved on the outer wall of the spring (4).

3. A mandrel according to claim 2, characterized in that: The outer wall of the fixed base (1) is provided with a plurality of wide slots (10) at equal intervals. The plurality of wide slots (10) correspond one-to-one with a plurality of grooves (3). The steel wire (9) passes through the wide slots (10).

4. A mandrel according to claim 1, characterized in that: A nut (11) is fixedly installed on the outer wall of the fixing seat (1).

5. A mandrel according to claim 1, characterized in that: The mandrel (2) has a threaded groove (12) at its end.

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