CN216371097U

CN216371097U - Workpiece clamping tool

Info

Publication number: CN216371097U
Application number: CN202123040964.3U
Authority: CN
Inventors: 邢林贺; 张建华; 王明恒; 李晓晨
Original assignee: China Academy of Aerospace Aerodynamics CAAA
Current assignee: China Academy of Aerospace Aerodynamics CAAA
Priority date: 2021-12-06
Filing date: 2021-12-06
Publication date: 2022-04-26
Anticipated expiration: 2031-12-06

Abstract

The utility model relates to the technical field of aircraft part machining and manufacturing, in particular to a workpiece clamping tool which comprises a rotating shaft, wherein a plurality of positioning grooves for placing workpieces and fastening mechanisms for fastening the workpieces in each positioning groove are formed in the side wall of the rotating shaft, and the workpieces in the plurality of positioning grooves are arranged at equal intervals with the center line of the rotating shaft in a fastening state. When the tool setting device is used, a workpiece to be processed is placed in the positioning groove of the rotating shaft, the fastening mechanism is used for clamping and fixing the workpiece, and the workpiece in the positioning groove is arranged at equal intervals with the central line of the rotating shaft in a fastening state, so that tool setting of all workpieces can be completed after tool setting is carried out on the workpiece on one side of the rotating shaft. Therefore, the clamping tool can realize one-time clamping and one-time tool setting for processing a plurality of products, has accurate positioning and simple and convenient operation, saves the time for repeatedly replacing, setting and clamping the parts, and improves the effective operation time and the working efficiency of the numerical control milling machine.

Description

Workpiece clamping tool

Technical Field

The utility model relates to the technical field of aircraft part machining and manufacturing, in particular to a workpiece clamping tool.

Background

The aircraft comprises a plurality of different parts, and the clamping mode of the parts commonly exists in the production, processing and manufacturing processes, which consumes a great deal of time and shortens the effective operation time of a machine tool. In particular to the processing and manufacturing of parts such as wings, flaps, ailerons, empennages and the like.

The empennage of the aircraft belongs to one of key parts in an aerodynamic suite, is arranged at the rear end of the aircraft, and mainly has the function of generating lift force to support the aircraft to fly in the air and play a certain role in stabilizing and manipulating, so that the empennage is the key part for determining the performance of the aircraft.

The tail of an aircraft is generally divided into a vertical tail and a horizontal tail. The rear part of the vertical tail wing is provided with a rudder, and the rear part of the horizontal tail wing is provided with an elevator, so that the rudder has the main purpose of balancing a lifting moment and has the functions of controlling and stabilizing a flight attitude.

When the empennage of the aircraft is subjected to mass production processing, the existing processing mode is that a single empennage vice is clamped, the positions of a workpiece and the vice on a milling machine workbench are adjusted, and milling forming is carried out after tool setting and alignment. The processing mode of the repeated tool setting and clamping not only consumes a large amount of clamping time during mass production processing, shortens the effective operation time of a machine tool, reduces the labor productivity, but also has the problem of poor consistency of workpieces in the same batch.

Therefore, in order to solve the above problems, it is an urgent need to solve the technical problem in the art to develop a workpiece clamping tool capable of batch milling and forming by one-time clamping and one-time tool setting.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a workpiece clamping tool which saves the time for repeatedly replacing, setting and clamping workpieces and improves the working efficiency of workpiece processing.

The utility model provides a workpiece clamping tool which comprises a rotating shaft, wherein a plurality of positioning grooves for placing workpieces and a fastening mechanism for fastening the workpieces in each positioning groove are formed in the side wall of the rotating shaft, and the workpieces in the plurality of positioning grooves are arranged at equal intervals with the center line of the rotating shaft in a fastened state.

As a further technical proposal, the fastening mechanism comprises a fastening block and a fastening screw,

the side wall of the rotating shaft is provided with a plurality of fastening grooves, all the fastening grooves are respectively communicated with the corresponding positioning grooves, the fastening block is fixed in the fastening grooves through the fastening screws, and the fastening block is pressed on a workpiece in the positioning grooves in a fixed state so as to fasten the workpiece.

As a further technical scheme, a plurality of planes are arranged on the side wall of the rotating shaft along the circumferential direction, and the positioning groove and the fastening groove are arranged on the planes.

As a further technical solution, on each plane, the positioning grooves are arranged at intervals in the long side direction of the rotating shaft, and the plurality of positioning grooves on the same plane are located in the same radial direction of the rotating shaft.

As a further technical scheme, the fastening block is a locking wedge block, and the cross section of the locking wedge block is in a right-angled trapezoid shape.

As a further technical scheme, threaded holes are formed in the rotating shaft below the locking wedge block and the fastening groove, and the fastening screw penetrates through the threaded hole of the locking wedge block and is in threaded connection with the rotating shaft.

As a further technical scheme, all the fastening grooves are correspondingly arranged on the same side of the positioning groove.

As a further technical scheme, one end of the rotating shaft is provided with a positioning inner hole, and the other end of the rotating shaft is provided with a concentric stepped shaft.

As a further technical scheme, 16 groups of the positioning grooves and the fastening grooves are symmetrically distributed on the rotating shaft.

As a further technical scheme, the positioning groove is matched with a reference clamping block reserved on a workpiece.

Compared with the prior art, the workpiece clamping tool has the following excellent technical effects:

the workpiece clamping tool comprises a rotating shaft, wherein a plurality of positioning grooves for placing workpieces and a fastening mechanism for fastening the workpieces in each positioning groove are formed in the side wall of the rotating shaft, and the workpieces in the plurality of positioning grooves are arranged at equal intervals with the center line of the rotating shaft in a fastened state. When the tool setting device is used, a workpiece to be processed is placed in the positioning groove of the rotating shaft, the fastening mechanism is used for clamping and fixing the workpiece, and the workpiece in the positioning groove is arranged at equal intervals with the central line of the rotating shaft in a fastening state, so that tool setting of all workpieces can be completed after tool setting is carried out on the workpiece on one side of the rotating shaft. Therefore, the clamping tool can realize one-time clamping and one-time tool setting for processing a plurality of products, has accurate positioning and simple and convenient operation, saves the time for repeatedly replacing, setting and clamping the parts, and improves the effective operation time and the working efficiency of the numerical control milling machine.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a workpiece clamping tool of the present invention;

fig. 2 is a sectional view of the workpiece clamping tool of the utility model.

Description of reference numerals:

1: a positioning groove; 2: fastening the groove; 3: a rotating shaft; 4: locking a wedge block; 5: fastening screws; 6: and (5) a workpiece.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1-2, the present invention provides a workpiece clamping tool, which includes a rotating shaft 3, wherein a plurality of positioning grooves 1 for placing workpieces 6 and a fastening mechanism for fastening the workpieces 6 in each positioning groove 1 are disposed on a side wall of the rotating shaft 3, and the workpieces 6 in the plurality of positioning grooves 1 are disposed at equal intervals from a center line of the rotating shaft 3 in a fastened state.

The problems that in the prior art, a large amount of repeated tool setting and clamping time is consumed during workpiece processing, the consistency of workpieces in the same batch is poor, and the effective operation time of a machine tool is shortened are solved. The utility model provides a workpiece clamping tool which comprises a rotating shaft 3, wherein a plurality of positioning grooves 1 for placing workpieces 6 and a fastening mechanism for fastening the workpieces 6 in each positioning groove 1 are formed in the side wall of the rotating shaft 3, and the workpieces 6 in the plurality of positioning grooves 1 are arranged at equal intervals with the center line of the rotating shaft 3 in a fastening state. During the use, will wait that the work piece 6 of processing is placed in the positioning groove 1 of axis of rotation 3, use fastening device to press from both sides tight fixed to work piece 6, because of work piece 6 in positioning groove 1 sets up with the central line equidistance of axis of rotation 3 under the fastening state, consequently, carry out the tool setting to one side work piece 6 on axis of rotation 3 after, can accomplish the tool setting to all work pieces 6. Therefore, the clamping tool can realize one-time clamping and one-time tool setting for processing a plurality of products, has accurate positioning and simple and convenient operation, saves the time for repeatedly replacing, setting and clamping the parts, and improves the effective operation time and the working efficiency of the numerical control milling machine.

Specifically, in order to increase the number of workpieces 6 mounted on the tool rotation shaft 3 and to make the rotation shaft 3 suitable for a numerically controlled milling machine, the cross section of the rotation shaft 3 in the radial direction thereof may be polygonal, such as quadrilateral, pentagonal, or hexagonal, or may be of other non-standard structure, as long as it is sufficient to fix the workpieces 6. And according to the requirement of the processing quantity, the length of the rotating shaft 3 can be adjusted, and the quantity of the positioning grooves 1 can be increased or decreased. Therefore, the workpiece 6 machined by the clamping tool has the advantages of high consistency and high interchangeability.

On the basis of the technical scheme, the fastening mechanism comprises a fastening block and fastening screws 5, a plurality of fastening grooves 2 are formed in the side wall of the rotating shaft 3, all the fastening grooves 2 are respectively communicated with the corresponding positioning grooves 1, the fastening block is fixed in the fastening grooves 2 through the fastening screws 5, and the fastening block is pressed on a workpiece 6 in the positioning grooves 1 in a fixed state to fasten the workpiece 6.

Specifically, fastening device includes fastening block and fastening screw 5, and during the use, operating personnel arranges work piece 6 and fastening block in positioning groove 1 and fastening groove 2 respectively, rotates fastening screw 5, and the in-process of fastening downwards realizes fastening block lateral displacement reference surface location, and then realizes the clamp of work piece 6. When the workpiece 6 is removed, the fastening screw 5 is loosened, the fastening screw 5 is unscrewed, and the workpiece 6 is taken out.

In order to improve the tightness of the workpiece 6, a plurality of planes are arranged on the side wall of the rotating shaft 3 along the circumferential direction, and the positioning groove 1 and the fastening groove 2 are arranged on the planes.

On the basis of the above technical solution, it is further preferable that, on each plane, the positioning grooves 1 are arranged at intervals in the long side direction of the rotating shaft 3, and the plurality of positioning grooves 1 on the same plane are located in the same radial direction of the rotating shaft 3.

In a specific embodiment of the utility model, on the section in the same radial direction, the axes of any adjacent positioning grooves 1 on the rotating shaft 3 intersect at the center of the circle on the section in the radial direction and are perpendicular to each other, that is, the rotating shaft 3 is a rotating square shaft, a plurality of positioning grooves 1 and fastening grooves 2 are symmetrically arranged on four horizontal side surfaces of the rotating square shaft, the positioning grooves 1 on the adjacent side surfaces are arranged in a right angle, and can be matched with corresponding numerically controlled milling machines, and the processing efficiency is highest.

Specifically, in order to improve the clamping degree of the fastening block to the workpiece 6, the fastening block is a locking wedge 4, and the cross section of the locking wedge 4 is in a right trapezoid shape.

The fastening block is the wedge structure, places in fastening recess 2 when locking voussoir 4 to when fastening downwards, control when locking voussoir 4 can follow the inclined plane and reciprocate, and then with work piece 6 location clamp, this design location is accurate, easy operation, has simplified clamping mode, locate mode, has improved work piece 6's clamping efficiency greatly.

On the basis of the technical scheme, furthermore, threaded holes are formed in the locking wedge 4 and the rotating shaft 3 below the fastening groove 2, and the fastening screw 5 penetrates through the threaded hole of the locking wedge 4 and is in threaded connection with the rotating shaft 3.

During the specific use, operating personnel arranges work piece 6 and locking voussoir 4 in positioning groove 1 and fastening groove 2 respectively, rotates fastening screw 5, and the in-process of fastening downwards realizes locking voussoir 4 lateral displacement reference surface location, makes locking

voussoir

4 and 3 threaded connection of axis of rotation, and locking voussoir 4 passes through the inclined plane locking with work piece 6, and then realizes the clamp of work piece 6. When the workpiece 6 is removed, the fastening screw 5 is loosened, the fastening screw 5 is unscrewed, and the workpiece 6 is taken out.

On the basis of the technical scheme, further, all the fastening grooves 2 are correspondingly arranged on the same side of the positioning groove 1.

In addition, in order to guarantee the consistency and symmetry of clamping at every turn, the fastening grooves 2 are correspondingly arranged on the same side of the positioning grooves 1. However, considering that the locking wedge 4 is provided in the fastening groove 2 only for clamping and fixing the work 6, the fastening groove 2 may be provided on either side of the positioning groove 1, and the positions of the fastening groove 2 on each side of the rotary shaft 3 with respect to the positioning groove 1 may be the same or different.

On the basis of the technical scheme, furthermore, a positioning inner hole is formed in one end of the rotating shaft 3, and a concentric stepped shaft is arranged at the other end of the rotating shaft.

Because the clamping tool needs to be placed on a numerical control milling machine for use, one end of the rotating shaft 3 is provided with a positioning inner hole connected with the tailstock center, and the other end of the rotating shaft is provided with a concentric stepped shaft for clamping the three-jaw chuck.

On the basis of the technical scheme, 16 groups of positioning grooves 1 and fastening grooves 2 are symmetrically distributed on the rotating shaft 3.

In a specific embodiment of the utility model, 16 positioning grooves 1 are symmetrically arranged in four directions of a rotating shaft 3, 16 workpieces 6 can be processed by one-time tool setting alignment, so that the time for repeatedly changing, setting and clamping the workpieces is greatly saved, the effective operation time of the numerically controlled milling machine is greatly improved, and the working efficiency of processing the workpieces 6 is improved.

Specifically, in order to avoid damage to the tail wing in the machining process, the positioning groove 1 is matched with a reference clamping block reserved on the workpiece 6. After the tail wing is machined, the reserved reference clamping blocks are cut off in a linear cutting mode.

The workpiece 6 of the utility model is preferably an aircraft tail wing, but is limited to the aircraft tail wing, and other workpieces 6 with similar structures can also use the clamping tool.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a work piece clamping frock, its characterized in that includes axis of rotation (3), be equipped with a plurality of positioning groove (1) that are used for placing work piece (6) on the lateral wall of axis of rotation (3) and be used for each work piece (6) in positioning groove (1) carry out the fastening device who fastens, and are a plurality of work piece (6) in positioning groove (1) under the fastening state with the central line equidistance of axis of rotation (3) sets up.

2. The workpiece clamping tool as recited in claim 1, characterized in that the fastening mechanism comprises a fastening block and a fastening screw (5),

be equipped with a plurality of fastening grooves (2) on the lateral wall of axis of rotation (3), all fastening grooves (2) respectively with correspond positioning groove (1) intercommunication, the fastening block passes through fastening screw (5) are fixed in fastening grooves (2), the fastening block is pressed under fixed state and is established on work piece (6) in positioning groove (1) in order to fasten work piece (6).

3. The workpiece clamping tool according to claim 2, wherein a plurality of planes are arranged on the side wall of the rotating shaft (3) along the circumferential direction, and the positioning groove (1) and the fastening groove (2) are arranged on the planes.

4. The workpiece clamping tool according to claim 3, wherein the positioning grooves (1) are arranged in the long side direction of the rotating shaft (3) at intervals on each plane, and the plurality of positioning grooves (1) on the same plane are positioned in the same radial direction of the rotating shaft (3).

5. The workpiece clamping tool as claimed in claim 2, wherein the fastening block is a locking wedge (4), and the cross section of the locking wedge (4) is in a right-angled trapezoid shape.

6. The workpiece clamping tool according to claim 5, wherein threaded holes are formed in the locking wedge (4) and the rotating shaft (3) below the fastening groove (2), and the fastening screw (5) penetrates through the threaded hole of the locking wedge (4) and is in threaded connection with the rotating shaft (3).

7. The workpiece clamping tool according to claim 2, wherein all the fastening grooves (2) are correspondingly arranged on the same side of the positioning groove (1).

8. The workpiece clamping tool according to claim 1, wherein one end of the rotating shaft (3) is provided with a positioning inner hole, and the other end of the rotating shaft is provided with a concentric stepped shaft.

9. The workpiece clamping tool according to claim 2, wherein 16 groups of the positioning grooves (1) and the fastening grooves (2) are symmetrically distributed on the rotating shaft (3).

10. The workpiece clamping tool as claimed in claim 1, wherein the positioning groove (1) is matched with a reference clamping block reserved on the workpiece (6).