CN216541978U

CN216541978U - Curved surface part machining positioning fixture

Info

Publication number: CN216541978U
Application number: CN202122491911.7U
Authority: CN
Inventors: 蒋忠伟; 王兴飞; 郭玉林
Original assignee: Harbin Tianhe Machinery Manufacturing Co ltd
Current assignee: Harbin Tianhe Machinery Manufacturing Co ltd
Priority date: 2021-10-16
Filing date: 2021-10-16
Publication date: 2022-05-17
Anticipated expiration: 2031-10-16

Abstract

The utility model discloses a curved surface part machining positioning fixture which comprises a bottom shell, a mounting plate and a threaded hole, wherein the mounting plate is attached to the upper surface of the bottom shell, the threaded hole is machined in the mounting plate, a clamping assembly is installed at the top of the mounting plate, the lower surface of a disc is attached to the mounting plate, an adjusting groove is formed in the disc, a threaded rod is sleeved in the adjusting groove, and the bottom end of the threaded rod is in threaded connection with the threaded hole. This curved surface part machine adds positioning fixture uses through the cooperation of disc, adjustment tank, threaded rod and nut etc. and the position of disc is adjusted at the outer wall of threaded rod, and after the outer wall of disc and part laminated completely, the nut carries out the rigidity to the disc, and then accomplishes the location of curved surface part and press from both sides tightly, adopts adjustable design, can realize the centre gripping to not unidimensional part, has reduced the quantity of anchor clamps, has reduced the design and the manufacturing cost of anchor clamps.

Description

Curved surface part machining positioning fixture

Technical Field

The utility model relates to the technical field of machining, in particular to a curved surface part machining positioning clamp.

Background

In the machining process of the curved surface part of the airplane, due to the fact that the number of the curved surface parts is large, each traditional curved surface part needs a set of corresponding machining positioning fixture, the position of the part is fixed, the part is prevented from moving in the machining process, the machining feasibility is guaranteed, and the machining precision is improved.

However, the conventional plane clamping mode is adopted in the conventional curved surface part machining positioning clamp, so that the risk of damaging the surface of the part is caused, and meanwhile, if a clamp corresponding to each part is designed, the cost of the clamp is remarkably increased due to the fact that the curved surface form is complex and changeable.

Disclosure of Invention

The utility model aims to provide a curved surface part machining positioning clamp, which aims to solve the problem that the conventional curved surface part machining positioning clamp has the risk of damaging the surface of a part in a traditional plane clamping mode.

In order to achieve the purpose, the utility model provides the following technical scheme: a curved surface part machining positioning clamp comprises a bottom shell, a mounting plate and a threaded hole, wherein the mounting plate is attached to the upper surface of the bottom shell, the threaded hole is machined in the mounting plate, and a clamping assembly is mounted at the top of the mounting plate;

the clamping assembly comprises a disc, an adjusting groove, a threaded rod and a nut;

the lower surface and the mounting panel laminating of disc mutually, the adjustment groove has been seted up to the inside of disc, the inside cover in adjustment groove is equipped with the threaded rod, the bottom and the screw hole threaded connection of threaded rod, the top threaded connection of threaded rod has the nut.

Preferably, the top of the bottom shell is fixedly connected with a fixing plate, and a clamping groove is formed in the fixing plate.

Preferably, an adjusting mechanism is mounted on the upper surface of the fixing plate;

the adjusting mechanism comprises a connecting pin, a groove plate, a gasket and a threaded cap;

two the bottom of connecting pin all links to each other with the draw-in groove screw thread, the outer wall cover of connecting pin is equipped with the frid, the lower surface and the fixed plate of frid laminate mutually, gasket and screw cap threaded connection are run through at the top of connecting pin, the lower surface and the frid of gasket laminate mutually, the upper surface and the screw cap of gasket laminate mutually.

Preferably, the bottom end of the bottom shell is welded with a bottom plate, and a mounting hole is machined in the bottom plate.

Preferably, a power mechanism is installed inside the bottom shell;

the power mechanism comprises a transmission shaft, a bearing, a rotating handle and a sliding block;

the outer wall of transmission shaft passes through the bearing and links to each other with the drain pan activity, the one end rigid coupling that the drain pan was kept away from to the transmission shaft has the turning handle, the outer wall threaded connection of transmission shaft has the slider, the outer wall and the drain pan clearance fit of slider, the top and the mounting panel rigid coupling of slider mutually.

Compared with the prior art, the utility model has the beneficial effects that: this curved surface part machine adds positioning fixture for the conventional art, has following advantage:

the position of the disc is adjusted on the outer wall of the threaded rod through the matching use of the disc, the adjusting groove, the threaded rod, the nut and the like, when the outer wall of the disc is completely attached to the part, the nut fixes the position of the disc, and then the positioning and clamping of the curved surface part are completed, and by adopting an adjustable design scheme, the clamping of parts with different sizes can be realized, the number of clamps is reduced, and the design and manufacturing cost of the clamps is reduced;

through the cooperation use of connecting pin, frid, gasket and screw cap etc. insert in the suitable draw-in groove and screw up with the connecting pin, establish the outer wall at the connecting pin with frid and gasket in proper order cover, remove frid and part laminating, rotate the screw cap at connecting pin top and closely laminate with the gasket, the cooperation of two frids is used and can be directly to some parts clamping, this kind of design is favorable to the cooperation use of whole mechanism, and the exclusive use that does increases application range.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a partial cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the connection structure of the disk, the threaded rod and the mounting plate in FIG. 1;

fig. 4 is a schematic view of the connection structure of the groove plate, the connecting pin and the fixing plate in fig. 1.

In the figure: 1. bottom shell, 2, mounting plate, 3, threaded hole, 4, clamping component, 401, disc, 402, adjusting groove, 403, threaded rod, 404, nut, 5, fixing plate, 6, clamping groove, 7, adjusting mechanism, 701, connecting pin, 702, grooved plate, 703, gasket, 704, threaded cap, 8, power mechanism, 801, transmission shaft, 802, bearing, 803, rotating handle, 804, sliding block, 9, bottom plate, 10 and mounting hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Referring to fig. 1-4, the present invention provides a technical solution: a positioning fixture for machining curved surface parts comprises a bottom shell 1, a mounting plate 2 and threaded holes 3, wherein the mounting plate 2 is attached to the upper surface of the bottom shell 1, the threaded holes 3 are machined in the mounting plate 2, four threaded holes 3 are machined in the mounting plate 2, a clamping assembly 4 is installed at the top of the mounting plate 2, the clamping assembly 4 comprises a disc 401, adjusting groove 402, threaded rod 403 and nut 404, the lower surface and the mounting panel 2 of disc 401 are laminated mutually, adjusting groove 402 has been seted up to disc 401's inside, adjusting groove 402 is set up in disc 401's inside for the right angle type, the inside cover of adjusting groove 402 is equipped with threaded rod 403, disc 401 passes through adjusting groove 402 and removes at the outer wall of threaded rod 403, the bottom and the 3 threaded connection of screw hole of threaded rod 403, threaded rod 403 can be followed screw hole 3 and dismantled, the top threaded connection of threaded rod 403 has nut 404, the effect of nut 404 is to carry out position fixing to disc 401.

The top rigid coupling of drain pan 1 has fixed plate 5, and fixed plate 5 welds the top at drain pan 1, and draw-in groove 6 has been seted up to the inside of fixed plate 5, and the internal thread has been processed in draw-in groove 6.

The upper surface mounting of fixed plate 5 has adjustment mechanism 7, adjustment mechanism 7 includes connecting pin 701, frid 702, gasket 703 and screw cap 704, the bottom of two connecting pins 701 all links to each other with draw-in groove 6 screw thread, the outer wall processing of connecting pin 701 has the screw thread, the outer wall cover of connecting pin 701 is equipped with frid 702, it has the bar to lead to the groove to add to be processed in frid 702, the lower surface and the fixed plate 5 of frid 702 are laminated mutually, gasket 703 and screw cap 704 threaded connection are run through at the top of connecting pin 701, gasket 703 increases the frictional force between screw cap 704 and the frid 702, the lower surface and the frid 702 of gasket 703 laminate mutually, the upper surface and the screw cap 704 of gasket 703 laminate mutually.

Bottom welding of drain pan 1 has bottom plate 9, the inside processing of bottom plate 9 has mounting hole 10, processing has four mounting holes 10 in the bottom plate 9, mounting hole 10 is used for installing the set screw, the internally mounted of drain pan 1 has power unit 8, power unit 8 includes transmission shaft 801, bearing 802, turning handle 803 and slider 804, the outer wall of transmission shaft 801 passes through bearing 802 and links to each other with drain pan 1 activity, the outer wall processing of transmission shaft 801 has the screw thread, transmission shaft 801 rotates in drain pan 1 through bearing 802, the one end rigid coupling that transmission shaft 801 kept away from drain pan 1 has turning handle 803, turning handle 803 drives transmission shaft 801 and rotates, the outer wall threaded connection of transmission shaft 801 has slider 804, the outer wall and the drain pan 1 clearance fit of slider 804, transmission shaft 801 drives slider 804 and moves in drain pan 1, the top of slider 804 and mounting panel 2 looks rigid coupling, slider 804 drives mounting panel 2 and removes.

In this example, when the positioning fixture for machining a curved surface part is used, firstly, the transmission shaft 801 is rotated through the rotating handle 803, the transmission shaft 801 rotates to drive the sliding block 804 to move in the bottom case 1, the sliding block 804 drives the mounting plate 2 to move, after the position of the mounting plate 2 is properly adjusted, the curved surface part is placed on the upper surfaces of the mounting plate 2 and the fixing plate 5, then the connecting pin 701 is inserted into the proper clamping groove 6 and screwed down, the groove plate 702 and the gasket 703 are sequentially sleeved on the outer wall of the connecting pin 701, the groove plate 702 is moved to be attached to the part, the threaded cap 704 at the top of the connecting pin 701 is rotated to be closely attached to the gasket 703, further, the threaded cap 704 fixes the position of the groove plate 702, the two groove plates 702 can be used in cooperation to directly clamp part of the part, then the position of the disc 401 is adjusted on the outer wall of the threaded rod 403, the disc 401 moves on the outer wall of the threaded rod 403 through the adjusting groove 402, when the outer wall of the disc 401 is completely attached to the part, and rotating a nut 404 on the outer wall of the threaded rod 403, and fixing the position of the disc 401 by the nut 404, thereby completing the positioning and clamping of the curved part.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a curved surface spare machine adds positioning fixture, includes drain pan (1), mounting panel (2) and screw hole (3), the upper surface laminating of drain pan (1) has mounting panel (2), the inside processing of mounting panel (2) has screw hole (3), its characterized in that: the top of the mounting plate (2) is provided with a clamping assembly (4);

the clamping assembly (4) comprises a disc (401), an adjusting groove (402), a threaded rod (403) and a nut (404);

the lower surface and the mounting panel (2) of disc (401) are laminated mutually, adjustment groove (402) have been seted up to the inside of disc (401), the inside cover of adjustment groove (402) is equipped with threaded rod (403), the bottom and screw hole (3) threaded connection of threaded rod (403), the top threaded connection of threaded rod (403) has nut (404).

2. The curved surface part machining positioning fixture according to claim 1, characterized in that: the top of drain pan (1) rigid coupling has fixed plate (5), draw-in groove (6) have been seted up to the inside of fixed plate (5).

3. The curved surface part machining positioning fixture of claim 2, characterized in that: an adjusting mechanism (7) is arranged on the upper surface of the fixing plate (5);

the adjusting mechanism (7) comprises a connecting pin (701), a groove plate (702), a gasket (703) and a threaded cap (704);

two the bottom of connecting pin (701) all links to each other with draw-in groove (6) screw thread, the outer wall cover of connecting pin (701) is equipped with frid (702), the lower surface and fixed plate (5) of frid (702) are laminated mutually, gasket (703) and screw cap (704) threaded connection are run through at the top of connecting pin (701), the lower surface and frid (702) of gasket (703) are laminated mutually, the upper surface and the screw cap (704) of gasket (703) are laminated mutually.

4. The curved surface part machining positioning fixture according to claim 1, characterized in that: the bottom end of the bottom shell (1) is welded with a bottom plate (9), and a mounting hole (10) is machined in the bottom plate (9).

5. The curved surface part machining positioning fixture according to claim 1, characterized in that: a power mechanism (8) is arranged in the bottom shell (1);

the power mechanism (8) comprises a transmission shaft (801), a bearing (802), a rotating handle (803) and a sliding block (804);

the outer wall of transmission shaft (801) passes through bearing (802) and drain pan (1) swing joint, the one end rigid coupling that drain pan (1) was kept away from in transmission shaft (801) has turning handle (803), the outer wall threaded connection of transmission shaft (801) has slider (804), the outer wall and the drain pan (1) clearance fit of slider (804), the top and mounting panel (2) looks rigid coupling of slider (804).