Universal rear positioning device for clamping spring

Abstract

The universal rear positioning device comprises a positioning rod, the positioning rod is a threaded rod, the diameter of the positioning rod is smaller than that of an inner hole of the corresponding clamping spring, the positioning rod is in threaded connection with a positioning piece, and the positioning piece is provided with a limiting structure corresponding to a rear end opening of the clamping spring. The clamp spring is simple in structure, convenient to operate, economical and applicable, the positioning rod and the positioning piece work cooperatively, a rear positioning structure is provided for a workpiece in the clamp spring, and the problem that the workpiece is difficult to position when the clamp spring clamps the workpiece is solved.

Description

Technical Field

[0001] The invention belongs to the field of mechanical processing, and in particular relates to a universal rear positioning device for a clamp spring. Background Art

[0002] Spring clamping is an important clamping method in the field of mechanical processing, and is widely used in workpiece clamping of various types of machine tools such as lathes and machining centers. Nowadays, spring clamping generally faces the problem of being unable to provide a positioning reference for the workpiece inside the spring. This problem not only restricts the machining accuracy requirements of certain sizes of the workpiece, but also reduces the efficiency of workpiece replacement. Summary of the invention

[0003] In view of this, the present invention aims to provide a universal rear positioning device for a clamp spring to solve the technical problem that the clamp spring cannot provide rear positioning for the workpiece.

[0004] To achieve the above object, the technical solution of the present invention is achieved as follows:

[0005] A universal rear positioning device for a clamp spring comprises a positioning rod, wherein the positioning rod is a threaded rod, the diameter of the positioning rod is smaller than the diameter of the inner hole of the corresponding clamp spring, a positioning piece is threadedly connected to the positioning rod, and the positioning piece is provided with a limiting structure corresponding to the rear port of the clamp spring.

[0006] Furthermore, the positioning member is a conical sleeve structure, whose small port diameter is smaller than the corresponding clamp spring rear port diameter, and the large port diameter of the positioning member is larger than the corresponding clamp spring rear port diameter, and the conical side of the positioning member is the limiting structure corresponding to the clamp spring rear port.

[0007] Furthermore, the cone angle corresponding to the positioning member is 3° to 7°

[0008] Furthermore, the positioning member is an elastic positioning member.

[0009] Furthermore, the positioning rod is provided with locking nuts at the front and rear sides of the positioning piece respectively, and the locking nuts are tightly attached to the end face of the positioning piece, wherein the radial dimension of the locking nuts corresponding to the small port of the positioning piece is smaller than the diameter of the small port of the positioning piece.

[0010] Furthermore, the locking nut is a hexagonal nut.

[0011] Compared with the prior art, the universal rear positioning device for a clamp spring described in the present invention has the following advantages:

[0012] (1) The present invention has a simple structure, is easy to operate, and is economical and applicable. The positioning rod and the positioning member work together to provide a rear positioning structure for the workpiece inside the clamp spring, thereby solving the problem of difficulty in positioning the workpiece when the clamp spring is clamped.

[0013] (2) In the present invention, the positioning member adopts a tapered sleeve structure, and the conical side surface of the tapered sleeve and the rear end of the clamp spring form a limit, so that the positioning rod is concentric with the clamp spring after insertion, which is convenient for the workpiece positioning operation.

[0014] (3) In the present invention, the positioning member adopts an elastic positioning member, which is convenient for the positioning member to be inserted and fixed with the clamp spring, so as to facilitate the rotation of the positioning rod and adjust the depth of its insertion into the clamp spring to meet the positioning requirements of the workpiece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of a universal rear positioning device for a clamp spring according to an embodiment of the present invention;

[0017] Description of reference numerals:

[0018] 1- Positioning rod; 2- Positioning piece; 3- Locking nut. DETAILED DESCRIPTION

[0019] The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0020] like Figure 1 As shown, a universal rear positioning device for a clamp spring includes a positioning rod 1 and a positioning member 2. The positioning rod 1 is a threaded rod, and its diameter is smaller than the inner hole diameter of the corresponding clamp spring. The positioning member 2 is provided with a threaded hole corresponding to the positioning rod 1. The positioning member 2 is sleeved on the positioning rod 1 and threadedly connected to the positioning rod 1. The positioning member 2 is provided with a limiting structure corresponding to the rear port of the clamp spring.

[0021] The principle of the present invention is as follows: the positioning rod 1 is inserted through the rear port of the through hole of the corresponding clamp spring, the position of the positioning member 2 on the positioning rod 1 is adjusted according to the workpiece clamping position requirement, the limiting structure limits the insertion depth of the positioning rod 1 to meet the workpiece clamping positioning requirement, the workpiece clamping end extends from the front port of the clamp spring until it contacts the front end of the positioning rod 1, at which time the positioning rod 1 performs rear positioning on the workpiece to ensure the workpiece clamping position accuracy.

[0022] In the present invention, the positioning member 2 is a cone sleeve structure with a cone angle of 3° to 7°, and its small port diameter is smaller than the diameter of the rear port of the clamp spring, and the large port diameter of the positioning member 2 is larger than the diameter of the rear port of the clamp spring. The conical side surface of the positioning member 2 forms a limit corresponding to the rear port of the clamp spring: the small port of the positioning member 2 is inserted from the rear port of the clamp spring along with the positioning rod 1 until the rear port of the clamp spring abuts the conical side surface of the positioning member 2, preventing the positioning member 2 from being inserted further, that is, limiting the insertion depth of the positioning rod 1. The positioning member 2 adopts a cone sleeve structure, so that the positioning rod 1 is concentric with the clamp spring after insertion, which is convenient for rear positioning of the workpiece.

[0023] Preferably, the positioning member 2 is an elastic positioning member, and the positioning member 2 is made of a non-metallic material with strong plasticity, such as a fluoroplastic member. By utilizing the elastic properties of the positioning member 2, when the small end of the positioning member 2 is inserted into the rear port of the clamp spring, the positioning member 2 plugs the rear port of the clamp spring, thereby fixing the positioning member 2. At this time, the positioning rod 1 can be rotated to adjust the length of the positioning rod 1 extending into the clamp spring, so as to facilitate the positioning and clamping operations of the workpiece.

[0024] In the present invention, the positioning rod 1 is provided with locking nuts 3 at the front and rear sides of the positioning member 2, respectively. The locking nuts 3 are in close contact with the end face of the positioning member 2, wherein the radial dimension of the locking nuts 3 corresponding to the small port of the positioning member 2 is smaller than the diameter of the small port of the positioning member 2. The locking nuts 3 can be round nuts or hexagonal nuts. When a round nut is used, the outer diameter of the locking nuts 3 corresponding to the small port of the positioning member 2 is smaller than the diameter of the small port of the positioning member 2; when a hexagonal nut is used, the diagonal distance of the locking nuts 3 corresponding to the small port of the positioning member 2 is smaller than the diameter of the small port of the positioning member 2, so that the small end of the positioning member 2 can be inserted through the rear port of the clamp spring.

[0025] The operation process of the present invention is as follows: initially adjust the position of the nut 3 and the positioning member 2 on the positioning rod 1 according to the workpiece clamping position, so that the length of the positioning rod 1 basically meets the workpiece positioning requirements, adjust the locking nuts 3 on the front and rear sides of the positioning member 2 to be close to the end face of the positioning member 2, and then the small end of the positioning member 2 is directly opposite to the rear port of the clamp spring, insert the positioning rod 1 together with the positioning member 2 from the rear port of the clamp spring until the positioning member 2 is tightly fixed, and then rotate the positioning rod 1, and fine-tune the length of the positioning rod 1 extending into the jacket to meet the requirements of the rear positioning of the workpiece, insert the workpiece clamping end from the front port of the clamp spring until the workpiece clamping end abuts the positioning rod 1, and the positioning rod 1 positions the workpiece. In the present invention, the setting of the positioning rod is to perform rear positioning for the workpiece clamping, improve the workpiece clamping accuracy, and ensure the workpiece processing accuracy.

[0026] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A universal rear positioning device for a clamp spring, characterized in that: The invention comprises a positioning rod (1), wherein the positioning rod (1) is a threaded rod, the diameter of the positioning rod (1) is smaller than the diameter of the inner hole of the corresponding clamp spring, the positioning rod (1) is threadedly connected to a positioning member (2), and the positioning member (2) is provided with a limiting structure corresponding to the rear port of the clamp spring.

2. A universal rear positioning device for a clamp spring according to claim 1, characterized in that: The positioning member (2) is a conical sleeve structure, the diameter of its small port is smaller than the diameter of the corresponding rear port of the clamp spring, the diameter of the large port of the positioning member (2) is larger than the diameter of the corresponding rear port of the clamp spring, and the conical side surface of the positioning member (2) is a limiting structure corresponding to the rear port of the clamp spring.

3. A universal rear positioning device for a clip spring according to claim 2, characterized in that: The cone angle corresponding to the positioning member (2) is 3° to 7°.

4. A universal rear positioning device for a clamp spring according to claim 2, characterized in that: The positioning member (2) is an elastic positioning member.

5. The universal rear positioning device for a clamp spring according to claim 2, characterized in that: The positioning rod (1) is provided with locking nuts (3) at the front and rear sides of the positioning member (2), respectively. The locking nuts (3) are tightly attached to the end surface of the positioning member (2), wherein the radial dimension of the locking nuts (3) corresponding to the small port of the positioning member (2) is smaller than the diameter of the small port of the positioning member (2).

6. A universal rear positioning device for a clip spring according to claim 5, characterized in that: The locking nut (3) is a hexagonal nut.

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