Precise small part clamping tool and clamping mechanism for machining center

Abstract

The utility model discloses a precision small piece clamping tool and clamping mechanism for machining center, including clamped part and clamping part, the clamping part passes through the centre line and is provided with the clamping seam, the clamping seam divides the clamping part into the first clamping block and the second clamping block, the bottom of the first clamping block is connected with the second clamping block, the clamping part passes through the centre line, the clamping part passes through the centre line, and the clamping part passes through the centre line. Inwards-concave clamping faces are arranged on the two side walls of the clamping seam, a first horizontal notch is formed in the bottom of the first clamping block and is perpendicular to the clamping seam, an elastic thin wall is formed between the first horizontal notch and the clamping seam, a second horizontal notch is formed in the bottom of the second clamping block and is perpendicular to the clamping seam, and an elastic thin wall is formed between the second horizontal notch and the clamping seam. An elastic thin wall is also formed between the second horizontal notch and the clamping seam, and the top of the first clamping block and the top of the second clamping block are locked through two locking screws. The clamping device has the advantages that the small precise parts can be clamped, the small precise parts can be machined on a machining center conveniently, the small precise parts are convenient to disassemble and assemble, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to the processing of small precision parts, in particular to a small precision part clamping tool and a clamping mechanism for a processing center. Background Art

[0002] With the development of processing technology, machining centers are able to perform milling, turning and other processing operations on workpieces. During the processing, most parts are clamped by the processing tooling on the machining center, such as three-jaw chuck clamping, electromagnet adsorption fixation, etc. However, for some small parts with high processing precision requirements, the traditional clamping method is easy to affect the processing precision of precision small parts, and the clamping is particularly inconvenient. Therefore, an auxiliary tooling is needed to facilitate the clamping processing of precision small parts. Utility Model Content

[0003] The utility model aims to overcome the shortcomings of the prior art and provide a small precision parts clamping tool and a clamping mechanism for a machining center.

[0004] The purpose of the utility model is achieved through the following technical scheme: a precision small parts clamping tool for a machining center, comprising an integrally formed clamped part and a clamping part, a clamping slit is opened on the clamping part through the center line, the clamping slit divides the clamping part into a first clamping block and a second clamping block, and the bottoms of the first clamping block and the second clamping block are connected, both side walls of the clamping slit are provided with concave clamping surfaces, and the center line of the two clamping surfaces passes through the center line of the clamping part, and the space between the two clamping surfaces constitutes a clamping area, a first horizontal incision is opened at the bottom of the first clamping block, the first horizontal incision is perpendicular to the clamping slit, and an elastic thin wall is formed between the first horizontal incision and the clamping slit, a second horizontal incision is opened at the bottom of the second clamping block, the second horizontal incision is perpendicular to the clamping slit, and an elastic thin wall is also formed between the second horizontal incision and the clamping slit, the tops of the first clamping block and the second clamping block are locked by two locking screws, and the two locking screws are respectively located on both sides of the clamping area.

[0005] Optionally, the two locking screws are symmetrical about the clamping area axis.

[0006] Optionally, a threaded through hole is provided on the first clamping block and / or the second clamping block, and a screw on the locking screw away from the head is threadedly connected to the threaded through hole.

[0007] Optionally, the clamped portion and the clamping portion are both cylinders, and the clamped portion and the clamping portion are coaxially arranged.

[0008] Optionally, the clamping surface is an arc-shaped concave surface.

[0009] A precision small parts clamping mechanism for a machining center comprises a three-jaw chuck and the above-mentioned clamping tooling, wherein the three-jaw chuck clamps a clamped part of the clamping tooling.

[0010] The utility model has the following advantages: The clamping tooling of the utility model can clamp precision small parts, thereby facilitating the processing of precision small parts on a machining center, and the precision small parts are relatively convenient to disassemble and assemble, which is convenient for operation. Brief Description of the Drawings

[0011] Figure 1 is a schematic structural view of the clamping tooling Figure 1 ;

[0012] Figure 2 is a schematic structural view of the clamping tooling Figure 2 ;

[0013] Figure 3 is a schematic cross-sectional view of the clamping tooling;

[0014] Figure 4 is Figure 2 a cross-sectional view taken along A-A in

[0015] Figure 5 is a schematic structural view of the clamping tooling clamping precision small parts;

[0016] Figure 6 is a schematic structural view of the clamping tooling being clamped by a three-jaw chuck;

[0017] In the figure, 1 - clamping workbench, 2 - three-jaw chuck, 3 - precision small part, 11 - clamped part, 12 - clamping part, 13 - locking screw, 14 - clamping slot, 15 - clamping surface, 16 - first horizontal incision, 17 - second horizontal incision, 18 - first clamping block, 19 - second clamping block. Detailed Description of the Specific Embodiment

[0018] To make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. Usually, the components of the embodiments of the utility model described and shown in the accompanying drawings here can be arranged and designed in various different configurations.

[0019] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents the selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the utility model.

[0020] It should be noted that, without conflict, the embodiments in the present utility model and the features in the embodiments can be combined with each other.

[0021] It should be noted that like reference numerals and letters denote like items in the following figures, and thus, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and defined, the terms "set", "install", "connect", "couple" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0024] As Figure 6 shown, a precision small part clamping mechanism for a machining center includes a three-jaw chuck 2 and a clamping tooling 1. In this embodiment, the clamping tooling 1 is a precision small part 3 clamping tooling 1 for a machining center. Specifically, as Figure 1 、 Figure 2 and Figure 3 shown, the clamping tooling 1 includes an integrally formed clamped portion 11 and a clamping portion 12. In this embodiment, both the clamped portion 11 and the clamping portion 12 are cylinders, and the clamped portion 11 and the clamping portion 12 are coaxially arranged. The diameter of the clamped portion 11 is smaller than that of the clamping portion 12. Therefore, there is a limiting step between the clamped portion 11 and the clamping portion 12. During use, the three-jaw chuck 2 clamps the clamped portion 11 of the clamping tooling 1, and the limiting step abuts against the top surface of the three-jaw chuck 2. Therefore, during machining, especially when the clamping tooling 1 is subjected to an axial pressure, the clamping tooling 1 will not move axially.

[0025] In this embodiment, asFigure 1 , Figure 2 and Figure 3 As shown in Figure 1 , Figure 2 and Figure 3 , a clamping slot 14 is provided on the clamping portion 12 along the center line. The clamping slot 14 divides the clamping portion 12 into a first clamping block 18 and a second clamping block 19. The first clamping block 18 and the second clamping block 19 are symmetrical about the clamping slot 14. Further, the bottoms of the first clamping block 18 and the second clamping block 19 are connected. That is to say, the depth of the clamping slot 14 is less than the height of the clamping portion 12. Concave clamping surfaces 15 are provided on both side walls of the clamping slot 14, and the central connection line of the two clamping surfaces 15 passes through the center line of the clamping portion 12. In this embodiment, as shown in Figure 3 and Figure 5 As shown in Figure 3 and Figure 5 , since the clamped area at the bottom of the precision small part 3 is a cylinder, the clamping surface 15 is an arc-shaped concave surface. Therefore, when the two clamping surfaces 15 contract, the two clamping surfaces 15 can clamp the clamped area of the precision small part 3. To facilitate the clamping of the precision small part 3 by the clamping surface 15, a first horizontal cut 16 is provided at the bottom of the first clamping block 18. The first horizontal cut 16 is perpendicular to the clamping slot 14, and an elastic thin wall is formed between the first horizontal cut 16 and the clamping slot 14. A second horizontal cut 17 is provided at the bottom of the second clamping block 19. The second horizontal cut 17 is perpendicular to the clamping slot 14, and an elastic thin wall is also formed between the second horizontal cut 17 and the clamping slot 14. The tops of the first clamping block 18 and the second clamping block 19 are locked by two locking screws 13. The two locking screws 13 are respectively located on both sides of the clamping area. During use, by rotating the locking screw 13 forward, the first clamping block 18 and the second clamping block 19 approach each other, and then the clamping surface 15 clamps the precision small part 3. After the processing is completed, when the precision small part 3 needs to be taken out, the locking screw 13 is rotated reversely, so that the first clamping block 18 and the second clamping block 19 move away, and thus the precision small part 3 can be taken out. Moreover, in this embodiment, an elastic thin wall is formed between the horizontal cut and the clamping slot 14, which facilitates the deformation of the clamping block under the action of the locking force of the locking screw 13. Preferably, the hole formed by the circumference where the clamping surface 15 is located and the clamped cylinder on the precision small part 3 are in clearance fit. Therefore, during the clamping process of the first clamping block 18 and the second clamping block 19, they are both in small deformation. Therefore, the requirement for the deformation amount of the elastic thin wall is not high, and the gap between the locking screw 13 and the thread during the locking and loosening processes of the locking screw 13 can also meet the small deformation of the first clamping block 18 and the second clamping block 19

[0026] In this embodiment, as shown in Figure 5As shown, the space between the two clamping surfaces 15 forms a clamping area. The two locking screws 13 are axisymmetric with respect to the clamping area. A threaded through hole is provided on the first clamping block 18 and / or the second clamping block 19. The screw of the locking screw 13 away from the head is threadedly connected to the threaded through hole. Preferably, a threaded through hole is provided on the first clamping block 18, and a through hole is provided on the second clamping block 19. A limiting surface is formed at the through hole of the second clamping block 19. The screw of the locking screw 13 passes through the through hole and is in threaded cooperation with the threaded through hole of the first clamping block 18. When the head of the locking screw 13 contacts the limiting surface, as the locking screw 13 rotates, the first clamping block 18 and the second clamping block 19 approach each other, thereby clamping the precision small part 3.

[0027] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A precision small parts clamping tool for a machining center, characterized by: The clamping portion comprises an integrally formed clamped part and a clamping part, a clamping slit is opened on the clamping part through the center line, the clamping slit divides the clamping part into a first clamping block and a second clamping block, and the bottoms of the first clamping block and the second clamping block are connected, both side walls of the clamping slit are provided with concave clamping surfaces, and the center line of the two clamping surfaces passes through the center line of the clamping portion, and the space between the two clamping surfaces constitutes a clamping area, a first horizontal incision is opened at the bottom of the first clamping block, the first horizontal incision is perpendicular to the clamping slit, and an elastic thin wall is formed between the first horizontal incision and the clamping slit, a second horizontal incision is opened at the bottom of the second clamping block, the second horizontal incision is perpendicular to the clamping slit, and an elastic thin wall is also formed between the second horizontal incision and the clamping slit, the tops of the first clamping block and the second clamping block are locked by two locking screws, and the two locking screws are respectively located on both sides of the clamping area.

2. The precision small parts clamping tool for a machining center according to claim 1, characterized in that: The two locking screws are symmetrical about the clamping area axis.

3. The precision small parts clamping tool for a machining center according to claim 1, characterized in that: The first clamping block and / or the second clamping block is provided with a threaded through hole, and the screw rod on the locking screw rod away from the head is threadedly connected with the threaded through hole.

4. The small precision parts clamping tool for a machining center according to claim 1, characterized in that: The clamped portion and the clamping portion are both cylindrical, and the clamped portion and the clamping portion are coaxially arranged.

5. The small precision parts clamping tool for a machining center according to claim 1, characterized in that: The clamping surface is an arc-shaped concave surface.

6. A precision small parts clamping mechanism for a machining center, comprising a three-jaw chuck, characterized in that: It comprises the clamping tool as described in any one of claims 1 to 5, wherein the three-jaw chuck clamps the clamped part of the clamping tool.

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