Special fixture for milling impeller shaft

Abstract

The utility model discloses a special fixture for milling an impeller shaft, which comprises a fixture body, a sliding block, a locking component and a fastening component, a clamping groove is arranged at the top of the fixture body, a notch penetrating to the top of the clamping groove is arranged on the side edge of the fixture body, the sliding block is arranged in the notch and can horizontally move relative to the notch, and the locking component is used for locking an impeller shaft blank on the fixture body. The clamp body and the sliding block are simple in structure and convenient to machine and manufacture, when the positioning face on the clamp body and the positioning face on the sliding block are abraded, the abraded surfaces can be milled away to generate new positioning faces, operation is convenient, feeding and discharging can be conducted outside a machine, the utilization rate of the machine tool is increased, and the machining efficiency is improved. The position of the sliding block can be flexibly adjusted according to the distance between the two positioning faces on the impeller shaft blank, the impeller shaft blank is not only clamped by the locking component, but also pressed by the sliding block, and it is guaranteed that the impeller shaft blank is accurately positioned and reliably clamped.

Description

Technical Field

[0001] The utility model relates to the technical field of impeller shaft milling, in particular to a special fixture for impeller shaft milling. Background Technique

[0002] The machining of the impeller structure of the impeller shaft needs to be carried out on a five-axis machining center. Using a three-jaw chuck or a precision parallel jaw vice general fixture to clamp the impeller shaft will cause interference between the tool and the fixture, resulting in safety accidents. Some impeller shafts also use special fixtures for clamping, but the positioning and clamping of the fixtures are unreliable.

[0003] Due to the structural design problem of the fixture, the impeller shaft cannot be reliably positioned and clamped. For example, using a three-jaw chuck or a precision parallel jaw vice general fixture for clamping will cause interference between the tool and the fixture, resulting in safety accidents; moreover, the positioning and clamping of some special fixtures are unreliable. Under the action of the cutting force, the impeller shaft will loosen, resulting in the scrapping of the impeller shaft. Content of the Utility Model

[0004] The purpose of this part is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this part, as well as in the abstract of the specification and the title of the utility model of this application, to avoid obscuring the purpose of this part, the abstract of the specification and the title of the utility model. However, such simplifications or omissions shall not be used to limit the scope of the utility model.

[0005] Therefore, the purpose of the utility model is to provide a special fixture for impeller shaft milling, which has the advantages of simple structure, convenient processing and manufacturing, convenient operation, accurate positioning and reliable clamping.

[0006] To solve the above technical problems, according to one aspect of the utility model, the following technical solutions are provided:

[0007] A special fixture for impeller shaft milling, comprising:

[0008] A fixture body, with a clamping groove arranged at the top and a notch penetrating to the top of the clamping groove arranged at the side;

[0009] A slider, arranged in the notch and capable of horizontally moving relative to the notch;

[0010] A locking member, used to lock the impeller shaft blank on the fixture body;

[0011] A locking component, used to lock the slider in the notch.

[0012] As a preferred scheme of the special fixture for impeller shaft milling described in the utility model, wherein, the clamping groove has an inner side surface, and the slider has a clamping surface;

[0013] The inner side surface and the clamping surface are respectively in contact with the positioning plane of the rough blank of the impeller shaft.

[0014] As a preferred solution of a special fixture for milling the impeller shaft of the present invention, wherein the top of the slider is flush with the top of the clamping groove.

[0015] As a preferred solution of a special fixture for milling the impeller shaft of the present invention, a central through hole penetrating through to the bottom of the fixture body is provided at the bottom of the clamping groove, the locking member is an internal hexagonal screw, and the internal hexagonal screw passes through the central through hole from the bottom of the fixture body and extends into the threaded hole of the rough blank of the impeller shaft to lock the rough blank of the impeller shaft on the fixture body.

[0016] As a preferred solution of a special fixture for milling the impeller shaft of the present invention, the fastening assembly includes a side-through threaded hole vertically penetrating through the clamping groove and a fastening screw cooperating with the side-through threaded hole.

[0017] As a preferred solution of a special fixture for milling the impeller shaft of the present invention, threaded blind holes are equidistantly arranged at the bottom of the fixture body.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: The fixture body and the slider of the present invention have a simple structure and are convenient for processing and manufacturing. When the positioning surfaces on the fixture body and the slider are worn, the worn surfaces can be milled to generate new positioning surfaces, and the operation is convenient. Loading and unloading can be carried out outside the machine, improving the utilization rate of the machine tool. Moreover, the position of the slider can be flexibly adjusted according to the distance between the two positioning surfaces on the rough blank of the impeller shaft. In addition to the clamping force of the locking member on the rough blank of the impeller shaft, the rough blank of the impeller shaft also receives the pressing force from the slider, ensuring accurate positioning and reliable clamping of the rough blank of the impeller shaft. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in conjunction with the drawings and detailed embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. Among them:

[0020] Figure 1 is an exploded view of a special fixture for milling the impeller shaft of the present invention;

[0021] Figure 2 is a bottom view of a special fixture for milling the impeller shaft of the present invention;

[0022] Figure 3 is a schematic structural diagram of the rough blank of the impeller shaft provided by the present invention;

[0023] Figure 4 This is an installation schematic diagram of a special fixture for milling the impeller shaft of the present utility model and the blank of the impeller shaft. Specific embodiments

[0024] In order to make the above objects, features, and advantages of the present utility model more obvious and understandable, the specific embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

[0025] Secondly, the present utility model will be described in detail with reference to the schematic diagrams. When detailing the embodiments of the present utility model, for the convenience of description, the cross-sectional views showing the device structure will be enlarged locally in a non-general proportion, and the schematic diagrams are only examples, which should not limit the scope of protection of the present utility model here. In addition, in actual production, three-dimensional spatial dimensions including length, width, and depth should be included.

[0026] In order to make the purpose, technical solution, and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] The present utility model provides a special fixture for milling the impeller shaft, which has the advantages of simple structure, convenient processing and manufacturing, convenient operation, accurate positioning, and reliable clamping.

[0028] Figures 1 - 4 Shown is a schematic structural diagram of an embodiment of a special fixture for milling the impeller shaft of the present utility model. Please refer to Figures 1 - 4 , A special fixture for milling the impeller shaft in this embodiment, its main part includes a fixture body 100, a slider 200, a locking member 300, and a set screw assembly 400.

[0029] A clamping groove 110 is provided at the top of the fixture body 100, and a notch 120 is provided on the side and penetrates to the top of the clamping groove 110. Among them, threaded blind holes 130 are equidistantly arranged at the bottom of the fixture body 100, and the special fixture is locked on the zero-point quick-change fixture adapter plate through the hexagon socket head cap screws and the threaded holes 5 on the fixture body 1.

[0030] The slider 200 is arranged in the notch 120 and can move horizontally relative to the notch 120. In this embodiment, the clamping groove 110 has an inner side surface 110a, and the slider 200 has a clamping surface 210; the inner side surface 110a and the clamping surface 210 are respectively in contact with the positioning plane 510 of the impeller shaft blank 500. Preferably, the top of the slider 200 is flush with the top of the clamping groove 110.

[0031] The locking component 300 is used to lock the rough blank of the impeller shaft 500 on the fixture body 100. Specifically, a central through hole 110b penetrating through to the bottom of the fixture body 100 is formed at the bottom of the clamping groove 110. The locking component 300 is an internal hexagon screw, and the internal hexagon screw passes through the central through hole 110b from the bottom of the fixture body 100 and extends into the threaded hole 520 of the rough blank of the impeller shaft 500 to lock the rough blank of the impeller shaft 500 on the fixture body 100.

[0032] The fastening assembly 400 is used to lock the slider 200 in the notch 120. Specifically, the fastening assembly 400 includes a side-through threaded hole 410 vertically penetrating through the clamping groove 110 and a set screw 420 cooperating with the side-through threaded hole 410.

[0033] Combined Figures 1 - 4 , a special fixture for milling the impeller shaft in this embodiment is used as follows:

[0034] When the fixture is positioned, the slider 200 slides on the bottom surface of the notch 120 of the fixture body 100 to adjust the position of the clamping surface 210. The top surface of the slider 200 is flush with the top surface of the fixture body 100. The inner side surface 110a of the clamping groove 110 and the clamping surface 210 are respectively in contact with the positioning plane 510 of the rough blank of the impeller shaft 500. The top surface of the fixture body 100 and the top surface of the slider 200 are used as positioning surfaces to contact the bottom surface of the rough blank of the impeller shaft 500. When clamping, the slider 200 is locked on the fixture body 100 through the fastening assembly 400, and then the internal hexagon screw passes through the central through hole 110b from the bottom of the fixture body 100 and extends into the threaded hole 520 of the rough blank of the impeller shaft 500 to lock the rough blank of the impeller shaft 500 on the fixture body 100.

[0035] Although the present utility model has been described above with reference to the embodiments, various improvements can be made to it and components therein can be replaced with equivalents without departing from the scope of the present utility model. In particular, as long as there is no structural conflict, the various features in the disclosed embodiments of the present utility model can be combined with each other in any way. The exhaustive description of these combinations is not given in this specification only for the sake of saving space and resources. Therefore, the present utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A special fixture for impeller shaft milling, characterized in that: include: A clamp body (100) having a clamp groove (110) disposed on the top and a notch (120) penetrating to the top of the clamp groove (110) disposed on the side; A slider (200) is arranged in the notch (120) and can move horizontally relative to the notch (120); A locking component (300) used to lock the impeller shaft blank (500) on the clamp body (100); The locking assembly (400) is used to lock the slider (200) in the notch (120).

2. The special fixture for impeller shaft milling according to claim 1, characterized in that: The clamping groove (110) has an inner side surface (110a), and the sliding block (200) has a clamping surface (210); The inner side surface (110a) and the clamping surface (210) are respectively fitted with a positioning plane (510) of the impeller shaft blank (500).

3. The special fixture for impeller shaft milling according to claim 1, characterized in that: The top of the sliding block (200) is flush with the top of the clamping groove (110).

4. The special fixture for impeller shaft milling according to claim 1, characterized in that: The bottom of the clamping groove (110) is provided with a central through hole (110b) extending to the bottom of the clamp body (100); the locking component (300) is a hexagon socket screw, which passes through the central through hole (110b) from the bottom of the clamp body (100) and extends into the threaded hole (520) of the impeller shaft blank (500) to lock the impeller shaft blank (500) on the clamp body (100).

5. The special fixture for impeller shaft milling according to claim 1, characterized in that: The fastening assembly (400) comprises a side-penetrating screw hole (410) vertically penetrating the clamping groove (110) and a fastening screw (420) matched with the side-penetrating screw hole (410).

6. The special fixture for impeller shaft milling according to claim 1, characterized in that: The bottom of the clamp body (100) is provided with threaded blind holes (130) at equal intervals.

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