CN111823030A

CN111823030A - Special clamp

Info

Publication number: CN111823030A
Application number: CN202010824957.3A
Authority: CN
Inventors: 刘佳坤; 王楠; 王宝刚; 张振华; 张光普; 齐宇翔; 姜云龙; 段性军; 高军伟
Original assignee: Heilongjiang Agricultural Engineering Vocational College
Current assignee: Heilongjiang Agricultural Engineering Vocational College
Priority date: 2020-08-17
Filing date: 2020-08-17
Publication date: 2020-10-27
Anticipated expiration: 2040-08-17
Also published as: CN111823030B

Abstract

The invention discloses a special clamp which comprises a base, a fixing plate, a control plate, positioning grooves, a centering plate and locking rods, wherein symmetrical annular grooves are symmetrically formed in the base, the fixing plate is arranged on the base and is positioned at the center of the base, the fixing plate is connected with the base in an inserting or screwing mode, the positioning grooves are fixedly formed in the fixing plate, the centering plate is embedded in the positioning grooves, the rear end face of the fixing plate is fixedly connected with the control plate through bolts, the control plate is circular, the locking rods are connected to the centering plate and are inserted in the positioning grooves, and the locking rods extend out of the end face of the control plate. The centering plate and the locking rod are movably connected through the pin shaft, and can be replaced according to the size of a workpiece.

Description

Special clamp

Technical Field

The invention relates to the technical field of machining, in particular to a special clamp.

Background

The existing mechanical fixtures are various, particularly milling machines, when workpieces are machined, a large number of fixtures are needed, but the existing fixtures are only single to clamp a fixed body and cannot achieve the functions of automatic centering and clamping, in addition, when positioning and debugging are conducted in the past, a pressure plate is generally used for positioning and adjusting, the adjusting mode needs cushion block matching, the height adjusting error is large, the cushion block and the pressure plate which are used for a long time are abraded, uneven conditions occur, waste products of machined parts are easily increased when the fixtures are used for machining and positioning, in order to provide positioning and machining precision, the applicant groves out a new milling machine fixture from an actual workshop and a practical processing factory, and the fixture can achieve the function of automatic centering while being convenient to fix.

Disclosure of Invention

The invention aims to provide a special clamp which comprises a base, a fixed plate, a control plate, positioning grooves, a centering plate and locking rods, wherein symmetrical annular grooves are symmetrically formed in the base, the fixed plate is arranged on the base and is positioned at the center of the base, the fixed plate is connected to the base in an inserting or screwing mode, the positioning grooves are fixedly formed in the fixed plate, the centering plate is embedded in the positioning grooves, the control plate is fixedly connected to the rear end face of the fixed plate through bolts, the control plate is circular, the locking rods are connected to the centering plate and are inserted into the positioning grooves, and the locking rods extend out of the end face of the control plate.

Furthermore, 6 constant head tanks are evenly distributed along the fixed plate terminal surface circumference, and the constant head tank link up the fixed plate.

Furthermore, the constant head tank is the symmetry of rectangle logical trough-shaped, and the rectangle sets up a plurality of.

Furthermore, the centering plate is wedge-shaped, is located the fixed splicing block that is the rectangle form that is equipped with in centering plate bottom surface, and the splicing block cooperates with the rectangular channel on the constant head tank, and is located centering plate and is being pegged graft swing joint the check lock lever through the location round pin axle.

Furthermore, the locking rod is 7-shaped, and the bottom surface of the locking rod, which is opposite to the centering plate, is horizontally arranged and is parallel to the plane of the fixing plate.

Furthermore, an included angle is formed between the control panel and the opposite surface of the rear end face of the fixing plate, and the included angle is controlled to be 5 degrees.

Further, the centering plate is any one of a triangle, an arc or a square.

Furthermore, the distance between the control board and the fixing board is adjusted and controlled to be 40-100 mm.

Further, the width of the locking rod is the same as that of the rectangular groove on the positioning groove.

Furthermore, the bottom surface of the locking rod opposite to the centering plate is an arc-shaped surface, and the bottom surface of the arc-shaped surface is parallel to the fixing plate.

Compared with the prior art, the invention has the beneficial effects that: the centering plate and the locking rod are movably connected through the pin shaft, and can be replaced according to the size of a workpiece.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a top view of the present invention;

FIG. 4 is a schematic view of a centering plate of the present invention;

FIG. 5 is a schematic view of the lock lever of the present invention;

FIG. 6 is a schematic view of a locking bar retaining a workpiece in accordance with the present invention;

FIG. 7 is a top view of the present invention clamping a workpiece;

FIG. 8 is a side view of the present invention clamping a workpiece;

FIG. 9 is a perspective view of the present invention clamping a workpiece.

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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

As shown in fig. 1-9, a special fixture comprises a base 1, a fixing plate 2, a control plate 3, a positioning groove 4, a centering plate 5 and a locking rod 6, wherein symmetrical annular grooves are symmetrically formed in the base 1, the fixing plate 2 is arranged on the base 1, the fixing plate 2 is located at the center of the base 1, the fixing plate 2 is connected to the base 1 in an inserting or screwing manner, the positioning groove 4 is fixedly formed in the fixing plate 2, the centering plate 5 is embedded in the positioning groove 4, the rear end face of the fixing plate 2 is fixedly connected to the control plate 3 through a bolt, the control plate 3 is circular, the locking rod 6 is connected to the centering plate 5, the locking rod 6 is inserted into the positioning groove 4, and the locking rod 6 extends out of the end face of the control plate 3.

In this embodiment, 6 positioning grooves 4 are uniformly distributed along the circumference of the end surface of the fixing plate 2, and the positioning grooves 4 penetrate through the fixing plate 2. The constant head tank sets up 6, can fix a position the work piece through different position.

In this embodiment, the positioning grooves 4 are in the shape of a rectangular symmetrical through groove, and a plurality of the positioning grooves are arranged in a rectangular shape. The constant head tank sets up the shape that a plurality of rectangle led to the groove into, can be convenient for adjust the fixed position of centering plate in leading to the inslot according to the size of the diameter of work piece when using.

In this embodiment, centering plate 5 is the wedge form, is located the fixed splicing block that is the rectangle form that is equipped with in 5 bottom surfaces of centering plate, and the splicing block cooperates with the rectangular channel on the constant head tank 4, and is located centering plate 5 and is going up through positioning pin axle grafting swing joint locking lever 6.

Another fixing mode of the centering plate 5 is directly matched with the positioning groove in a sliding block mode, the positioning groove at the moment is of a rectangular through groove structure, and the rectangular blocks which are symmetrically provided with lugs at the bottom of the centering plate are matched with rectangular slide ways which are arranged on the opposite inner walls of the positioning groove.

Another fixing mode of the centering plate 5 adopts a hydraulic and pneumatic mode to fixedly arrange a hydraulic support rod from the left vertical edge and the right vertical edge of the centering plate 5, so that the centering plate is convenient to push.

Another kind of fixed mode of centering plate 5 is for adopting three-jaw cardboard work structure, is located the fixed rotatory hole that is equipped with on the terminal surface on 5 stiles of centering plate, and centering plate 5 adopts threaded connection mode to be connected with the constant head tank and fixes, all is equipped with scale mark on the contact surface of centering plate and fixed plate and corresponds each other.

In this embodiment, the locking rod 6 is 7-shaped, and the bottom surface of the locking rod 6 opposite to the centering plate 5 is horizontally arranged and parallel to the plane of the fixing plate 2.

In this embodiment, an included angle is formed between the opposite surfaces of the control plate 3 and the rear end face of the fixing plate 2, and the included angle is controlled to be 5 degrees.

The base 1 is symmetrically provided with symmetrical annular grooves, the function of additionally arranging the annular grooves is to more firmly position the base, and meanwhile, the structural mode of the annular grooves is adopted to facilitate butt joint.

Be equipped with the contained angle of 5 degrees on the control panel 3, the contained angle is 5 degrees by the inclined plane on the control panel 3 with 3 terminal surface formation angles of control panel, and control panel 3 is parallel to each other with fixed plate 2, and it is 5 degrees with the angle that the fixed plate formed when the inclined plane place straight line position space extends to and intersects with the fixed plate. I.e., a tapered slope having 5 degrees is formed on the end surface of the control plate 3.

Through setting up the effect that the angle can make the shrink catch up and outwards expand thereby realize that the check lock lever front end plane supports the work piece and realizes compressing tightly when the check lock lever is tightly pushed up to the control panel end.

In the present embodiment, the centering plate 5 is any one of a triangle, an arc, and a square. The shape of the centering plate 5 is determined according to the shape of the workpiece to be machined, and the centering plate can be replaced.

In the embodiment, the distance between the control board 3 and the fixing board 2 is adjusted and controlled to be 40-100 mm.

In this embodiment, the width of the locking lever 6 is the same as the width of the rectangular groove on the positioning groove 4. According to the width of the locking rod, the distance between the control plate and the fixing plate is shortened by matching with the positioning groove until the tail end of the locking rod props against the control plate until the locking rod is pressed.

The automatic centering device realizes the automatic centering of the workpiece through the centering plate, can realize the automatic pressing effect through the locking rod, and replaces the defect of uneven original pressing plate.

In this embodiment, the bottom surface of the locking rod 6 opposite to the centering plate 5 is an arc surface, and the bottom surface of the arc surface is parallel to the fixing plate 2. The locking rods with different shapes can be replaced according to the shape of the processed workpiece, and the ground of the locking rod is ensured to be parallel to the plane where the fixing plate 2 is located.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The special fixture is characterized in that: comprises a base (1), a fixed plate (2), a control plate (3), a positioning groove (4), a centering plate (5) and a locking rod (6), symmetrical annular grooves are symmetrically formed in the base (1), a fixing plate (2) is arranged on the base (1), the fixed plate (2) is positioned at the center of the base (1), the fixed plate (2) is spliced or screwed with the base (1), a positioning groove (4) is fixedly arranged on the fixed plate (2), a centering plate (5) is embedded in the positioning groove (4), the rear end face of the fixed plate (2) is fixedly connected with a control plate (3) through a bolt, the control plate (3) is circular, the centering plate (5) is connected with a locking rod (6), the locking rod (6) is inserted into the positioning groove (4), and the locking rod (6) extends out to the end face of the control plate (3).

2. A special fixture as claimed in claim 1, wherein said positioning slots (4) are evenly distributed in 6 numbers along the circumference of the end surface of the fixing plate (2), and the positioning slots (4) penetrate through the fixing plate (2).

3. A special fixture as claimed in claim 2, characterized in that said positioning slots (4) are in the shape of rectangular symmetrical through slots, and several of them are arranged in a rectangular shape.

4. A special fixture as claimed in claim 1, wherein the centering plate (5) is wedge-shaped, a rectangular insertion block is fixedly arranged on the bottom surface of the centering plate (5), the insertion block is matched with the rectangular groove on the positioning slot (4), and the centering plate (5) is movably connected with the locking rod (6) through a positioning pin shaft in an insertion manner.

5. A special fixture as claimed in claim 1 or 4, wherein the locking bar (6) is 7-shaped, and the bottom surface of the locking bar (6) opposite to the centering plate (5) is horizontally arranged and parallel to the plane of the fixing plate (2).

6. A special fixture as claimed in claim 1, characterized in that an included angle is provided between the opposite surfaces of the control plate (3) and the rear end surface of the fixing plate (2), and the included angle is controlled to be 5 degrees.

7. A special fixture as claimed in claim 1, characterised in that the centring plate (5) is any one of triangular, arcuate or square.

8. A special fixture according to claim 6, characterized in that the distance between the control plate (3) and the fixing plate (2) is adjusted and controlled to be 40-100 mm.

9. A special clamp as claimed in claim 1, characterized in that the width of the locking lever (6) is the same as the width of the rectangular groove in the positioning groove (4).

10. A special fixture as claimed in claim 1, characterised in that the bottom surface of the locking lever (6) opposite to the centring plate (5) is an arc-shaped surface, and the bottom surface of the arc-shaped surface is parallel to the fixing plate (2).