CN105855941B - A kind of Rapid Combination flexible fixture for large scale flat-type work pieces process - Google Patents

Abstract

The invention relates to a quick-combined flexible fixture for processing large-size flat workpieces, which includes a base, a plurality of quick-combined pressing mechanisms, at least two stop plungers and positioning plungers; There is a positioning groove for the installation through hole on the base above the installation channel. There is a screw in the installation channel. The two ends of the screw are fixed in the installation channel through bearings. It is installed in the positioning groove, and its lower end is connected to the nut seat, and the upper end protrudes out of the positioning groove; two sets of tracks are arranged on the base, and the two sets of tracks are symmetrically distributed on both sides of the installation channel; multiple quick combination pressing mechanisms are respectively It is installed in two sets of rails and can move along the corresponding rails; at least two anti-resistance plungers are installed side by side in the rails on one side of the installation channel. Advantages: simple structure, easy operation, fast clamping, improved processing efficiency, and saved costs.

Description

A fast combined flexible fixture for processing large-size flat workpieces

technical field

The invention relates to an auxiliary fixture, in particular to a fast combined flexible fixture used for processing large-size flat workpieces.

Background technique

In the field of machining and manufacturing, fixtures have a wide range of uses. Most common fixtures on CNC milling machines are vise or combination clamps. However, the opening of the flat pliers is limited, and when processing a large-sized flat plate, it is difficult or difficult to clamp; there is also a combined pressing plate that can be fixed, but it takes a lot of time to process the workpiece from alignment to pressing the pressing plate. Time increases the processing cost, making it difficult to achieve fast and efficient processing.

Contents of the invention

The technical problem to be solved by the present invention is to provide a fast combined flexible fixture for processing large-size flat workpieces, which effectively solves the difficulty of adding and positioning in the processing of large-size flat workpieces in the prior art, which is time-consuming and labor-intensive. , the efficiency is low, and the defects of fast and efficient processing cannot be realized.

The technical solution of the present invention to solve the above-mentioned technical problems is as follows: a fast-combined flexible fixture for processing large-size flat workpieces, including a base, a plurality of fast-combined pressing mechanisms, at least two stop plungers and positioning plungers;

The middle part of the above-mentioned base is provided with an installation passage running through it from front to back. The base above the above-mentioned installation passage is provided with a positioning groove for installation through holes. The above-mentioned installation passage is provided with a screw, and the two ends of the above-mentioned screw are fixed in the installation passage through bearings. A nut seat is sheathed on the screw rod, the above-mentioned positioning plunger is vertically arranged in the positioning groove, and its lower end is connected to the above-mentioned nut seat, and its upper end protrudes out of the above-mentioned positioning groove, and can interfere with the workpiece to be processed, and is used for positioning the workpiece to be processed;

Two sets of tracks are arranged on the above base, and the two sets of tracks are symmetrically distributed on both sides of the above installation channel;

The above-mentioned multiple fast combined pressing mechanisms are respectively installed in two sets of the above-mentioned tracks, and can move along the corresponding tracks, and are used to press the workpiece to be processed on the above-mentioned base;

At least two of the above-mentioned stopper plungers are installed side by side in the track on one side of the installation channel, and can move along the corresponding track, and can touch the workpiece to be processed for positioning the workpiece to be processed.

The beneficial effects of the present invention are: simple structure, easy operation, greatly saving the time required for leveling and clamping large-sized flat workpieces, improving processing efficiency, saving costs, and being applicable to various types of milling machines for processing large-sized flat workpieces. artifact.

On the basis of the above technical solutions, the present invention can also be improved as follows.

Further, each set of above-mentioned rails includes a plurality of horizontal rails arranged front and back and a plurality of vertical rails perpendicular to the horizontal rails and interlacedly arranged, and a plurality of the above-mentioned quick combination pressing mechanisms are respectively symmetrically distributed on the corresponding two groups of above-mentioned rails. In any one of the horizontal rails or vertical rails, at least two stop plungers are distributed in any one of the vertical rails corresponding to the above-mentioned rails.

The beneficial effect of adopting the above-mentioned further solution is that the structure is simple, the operation is fast and convenient, and it is convenient for fast clamping and positioning of workpieces.

Further, the above-mentioned quick combination pressing mechanism includes a bottom plate, a slider, a connecting screw, a cam handle and a pressing clamp. The above-mentioned connecting screw passes through the above-mentioned bottom plate up and down, and its two ends extend out of the above-mentioned bottom plate respectively, and the above-mentioned slider is threadedly connected At the lower end of the above-mentioned connecting screw, the above-mentioned slider is slidably installed in the corresponding track and can move along the track. The above-mentioned pressing clamp is installed on the top of the above-mentioned bottom plate, and the above-mentioned cam handle is rotatably connected to the upper end of the above-mentioned connecting screw, and it is connected with the One end of the screw connection is in contact with the top of the above-mentioned bottom plate, and when the cam handle is pressed and rotated, the above-mentioned bottom plate can be pressed to move downward relative to the above-mentioned connecting screw.

The beneficial effect of adopting the above-mentioned further solution is that the fast combined pressing mechanism has a simple structure, flexible and convenient operation, and is convenient for fast clamping in space.

Further, the above-mentioned cam handle includes a cam portion and a handle portion connected to the cam portion, the above-mentioned cam portion is rotatably mounted on the upper end of the above-mentioned connecting screw through a pin shaft, and its bottom touches the above-mentioned base plate, when the above-mentioned handle portion is pressed down, the above-mentioned The cam part can rotate around the pin shaft. During the rotation, the above-mentioned base plate is pressed down and moves downward relative to the connecting screw rod, so that the base plate is pressed on the upper surface of the above-mentioned base, and the base plate is fixed.

The beneficial effect of adopting the above further solution is that the cam handle has a simple structure, and the characteristics of the cam part can be used to press and fix the bottom plate when the cam handle is pressed, and the operation is relatively simple.

Further, the bottom of the bottom plate is provided with a guide column, and the guide column and the corresponding slider at the lower end of the connecting screw are located in the same horizontal or vertical rail of the same track.

The beneficial effect of adopting the above further solution is that the bottom plate can move smoothly and linearly through the two points and one line of the guide column and the slider, which is convenient for rapid movement, positioning and clamping.

Further, the above-mentioned pressing and clamping pliers include two connection seats arranged side by side, a pressing handle and an indenter mechanism, the above-mentioned indenter mechanism is installed on one of the connection seats through the rotation of the pin shaft, and the above-mentioned pressing handle is rotated by the pin shaft and the indenter mechanism The above-mentioned pressing handle is also installed on another connecting seat through the rotation of the pin shaft. When the pressing handle is pressed down, the above-mentioned pressing handle drives the end of the pressing head mechanism connected to it to move upward, and makes the end of the pressing head mechanism away from it. Move down, and press the surface of the workpiece on the base, so that the workpiece is fixed on the bottom plate.

The beneficial effect of adopting the above further solution is that the structure of the pressing clamp is simple, and the four-point principle of the mechanical four-bar linkage mechanism is adopted. When it is pressed, the mechanism has a self-locking clamping function, and the function of quickly clamping the workpiece is realized. .

Further, one end of the screw rod is also connected to a rotating handle.

The beneficial effect of adopting the above further scheme is that it is convenient to rotate the screw rod by turning the handle, and further realize the positioning of the workpiece by moving the positioning plunger, the operation is relatively simple, and the positioning of the workpiece is relatively fast.

Further, fixing platforms are arranged symmetrically on both sides of the above-mentioned base, and strip-shaped fixing holes are opened on the above-mentioned fixing platform.

The beneficial effect of adopting the above further solution is that it is convenient to install the whole device on the workbench of the milling machine or other equipment by setting the pre-tightening bolts in the fixed block.

Further, the cross-sections of the horizontal rails and the vertical rails of each group of the above-mentioned rails are all set in a T-shape.

The beneficial effect of adopting the above further scheme is that the structure is simple and the design is reasonable.

Description of drawings

Fig. 1 is the structural schematic diagram of the quick combined flexible fixture that is used for the processing of large-size flat workpiece of the present invention;

Fig. 2 is the schematic structural view of the base of the fast combined flexible fixture used for processing large-size flat workpieces of the present invention;

3 is a schematic cross-sectional view of the assembly structure of the screw and the installation channel of the fast combined flexible fixture used for processing large-size flat workpieces according to the present invention;

Fig. 4 is a structural schematic diagram of a quick combination pressing mechanism of a quick combination flexible clamp for large-size flat workpiece processing according to the present invention;

Fig. 5 is a schematic diagram of the use state of the quick-assembled flexible fixture used for processing large-sized flat workpieces according to the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. Base, 2. Quick combination pressing mechanism, 3. Stop plunger, 4. Positioning plunger, 5. Screw, 11. Positioning groove, 12. Fixed platform, 21. Base plate, 22. Slider, 23. Connecting screw, 24, cam handle, 25, pressing clamp, 51, nut seat, 52, rotating handle, 121, fixing hole, 211, guide column, 241, cam part, 242, handle part, 251, connecting seat, 252, pressing the handle, 253, the pressure head mechanism.

detailed description

The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

Embodiment: As shown in the figure, the quick-combined flexible fixture for processing large-sized flat workpieces in this embodiment includes a base 1, a plurality of quick-combined pressing mechanisms 2, at least two stop plungers 3 and a positioning plunger 4;

The middle part of the above-mentioned base 1 is provided with an installation channel that runs through it from front to back. The base 1 above the above-mentioned installation channel is provided with a positioning groove 11 for installing through holes. The above-mentioned installation channel is provided with a screw rod 5, and the two ends of the above-mentioned screw rod 5 are fixed by bearings. In the installation channel, the above-mentioned screw rod 5 is covered with a nut seat 51, the above-mentioned positioning plunger 4 is vertically arranged in the positioning groove 11, and its lower end is connected to the above-mentioned nut seat 51, and the upper end extends out of the above-mentioned positioning groove 11, and can be in contact with The workpiece to be processed is used for positioning the workpiece to be processed;

Two sets of tracks are arranged on the base 1, and the two sets of tracks are symmetrically distributed on both sides of the above-mentioned installation channel;

The above-mentioned multiple fast combined pressing mechanisms 2 are respectively installed in two groups of the above-mentioned tracks, and can move along the corresponding tracks, and are used to press the workpiece to be processed on the above-mentioned base 1;

At least two of the above-mentioned stopper plungers 3 are installed side by side in a track located on one side of the installation channel, and can move along the corresponding track, and can touch the above-mentioned workpiece to be processed for positioning the workpiece to be processed.

During use, the base 1 needs to be leveled and aligned first, and fixed to the workbench of the milling machine, and at least two stop plungers 3 are placed in the same track on one side of the installation channel, and the two stop plungers 3 have the same size, so the workpiece is directly placed on the two stop plungers 3 to ensure that the left side of the workpiece is parallel to the Y axis of the milling machine; after that, the positioning plunger 4 with a hole in the screw rod 5 is moved to make the workpiece touch the positioning plunger 4, driven by the positioning plunger 4, the position of the workpiece on the base 1 can be adjusted; after the position of the workpiece is adjusted, the quick combination pressing mechanism 2 is placed on the appropriate position on the base 1, and it is moved on the track to adjust and track Corresponding multiple fast combined pressing mechanisms 2 make it close to the flat workpiece, and in the next step, press each quick combined pressing mechanism 2 to fasten the workpiece on the base 1 to process the workpiece.

Preferably, each set of above-mentioned rails includes a plurality of horizontal rails arranged front and back and a plurality of vertical rails perpendicular to the horizontal rails and interlaced with the horizontal rails, and a plurality of the above-mentioned quick combination pressing mechanisms 2 are respectively symmetrically distributed in the corresponding two groups of above-mentioned rails. In any horizontal rail or vertical rail of the track, at least two stop plungers 3 are distributed in any vertical rail of the above-mentioned track corresponding to it. When moving, at least two stop plungers 3 are on the same track. Move in any one of the vertical rails, choose a suitable position to place the workpiece, so that one side of the workpiece is in contact with at least two stop plungers 3, and then move each corresponding pair of plungers 3 horizontally or vertically in each group of rails A fast combined pressing mechanism 2 makes it close to the workpiece, and presses it to compress the workpiece on the base 1.

In some embodiments, as shown in FIG. 4, the above-mentioned quick combination pressing mechanism 2 includes a bottom plate 21, a slider 22, a connecting screw 23, a cam handle 24 and a pressing clamp 25, and the above-mentioned connecting screw 23 passes through the above-mentioned bottom plate up and down. 21, and its two ends protrude out of the above-mentioned bottom plate 21 respectively, the above-mentioned slider 22 is threadedly connected to the lower end of the above-mentioned connecting screw 23, the above-mentioned slider 22 is slidably installed in the corresponding track, and can move along the track, the above-mentioned pressing clamp 25 is installed on the top of the above-mentioned bottom plate 21, the above-mentioned cam handle 24 is connected to the upper end of the above-mentioned connecting screw 23 in rotation, and one end connected to the connecting screw 23 is in contact with the top of the above-mentioned bottom plate 21, and when the cam handle 24 is pressed and rotated, it can be pressed Move the above-mentioned base plate 21 to move downward relative to the above-mentioned connecting screw rod 23. When the quick combination pressing mechanism 2 moves to a position close to the workpiece in the corresponding track, press the cam handle 24 downward. During this process, the cam handle 24 resists and Press the bottom plate 21 downwards to press the bottom plate 21 on the base 1 and fix it. Afterwards, press the clamping pliers 25 downwards so that the pressure head part touches the surface of the workpiece and press the workpiece on the base 1 to complete. Workpiece clamping.

Preferably, the above-mentioned cam handle 24 includes a cam portion 241 and a handle portion 242 connected to the cam portion 241, the above-mentioned cam portion 241 is rotatably mounted on the upper end of the above-mentioned connecting screw 23 through a pin shaft, and its bottom is in contact with the above-mentioned bottom plate 21, when facing When the above-mentioned handle part 242 is pressed down, the above-mentioned cam part 241 can rotate around the pin shaft. During the rotation process, the above-mentioned bottom plate 21 is pressed down and moves downward relative to the connecting screw 23, so that the bottom plate 21 is pressed on the upper surface of the above-mentioned base 1 , so that the bottom plate 21 is fixed, using the characteristics of the cam part 241, when the cam handle 24 is pressed down, the cam part 241 has a certain rotation, and during its rotation, the linear distance between its bottom and the pin shaft has a height Change, and the height gradually increases, while increasing, the bottom of the cam portion 241 can be limited by the matching pin, so that the bottom plate 21 moves downward and is pressed against the base 1, and its operation is relatively simple.

In some embodiments, the bottom of the bottom plate 21 is provided with a guide column 211, and the guide column 211 and the slider 22 at the lower end of the corresponding connecting screw 23 are located in the same horizontal rail or vertical rail of the same track, so that the guide column 211 Two points and one line are positioned between the slider 22, and relative rotation occurs between the bottom plate 21, the slider 22 and the connecting screw 23.

Preferably, the above-mentioned pressing clamp pliers 25 includes two connection seats 251 arranged side by side, a pressing handle 252 and a pressure head mechanism 253, and the above-mentioned pressure head mechanism 253 is installed on one of the connection seats 251 through a pin rotation, and the above-mentioned pressing handle 252 The pressing handle 252 is rotatably connected to the pressing head mechanism 253 through the pin shaft, and the above-mentioned pressing handle 252 is also installed on another connection seat 251 through the rotating pin shaft. When the pressing handle 252 is pressed down, the pressing handle 252 drives the pressing head mechanism 253 to connect with it One end of the pressure head mechanism 253 moves upward, and the end of the pressure head mechanism 253 away from it moves downward, and presses the surface of the workpiece on the base 1, so that the workpiece is fixed on the bottom plate 1. When the thickness of the workpiece changes, it is only necessary to adjust the pressure. The length of the connecting rod of the head mechanism 253 can realize compressing the workpieces of different thicknesses, the operation is relatively simple, and the clamping is fast and convenient.

Preferably, one end of the above-mentioned screw rod 5 is also connected to a rotating handle 52, and by operating the rotating handle 52 to rotate, the screw rod 5 can be driven to rotate, and the nut seat 51 can drive the slider 22 and the positioning plunger 4 to move in the positioning groove 11 to carry out the work. position.

Preferably, both sides of the above-mentioned base 1 are symmetrically provided with fixing tables 12, and there are strip-shaped fixing holes 121 on the above-mentioned fixing table 12. The fixing hole 121 is fixed on the processing table to complete the fixed assembly of the whole device on the milling machine processing table.

Preferably, the cross-sections of the horizontal rails and vertical rails of each group of above-mentioned rails are T-shaped, and the design is reasonable, which avoids the situation where the slider 22 falls off the rails during the movement.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and therefore should not be construed as limitations on the invention.

In the present invention, unless otherwise clearly specified and limited, terms such as "installation", "connection", "connection" and "fixation" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection , or integrated; can be mechanically connected, can also be electrically connected or can communicate with each other; can be directly connected, can also be indirectly connected through an intermediary, can be the internal communication of two components or the interaction relationship between two components, unless expressly defined otherwise. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within range.

Claims (8)

1. A kind of 1. Rapid Combination flexible fixture for large scale flat-type work pieces process, it is characterised in that：Including base (1), Multiple Rapid Combination hold-down mechanisms (2), at least two are only to plunger (3) and positioning plunger (4)；

   In the base (1) middle part be provided with it is front and rear run through its installation passage, opened on the base (1) above the installation passage There is the locating slot (11) of connection installation passage, be provided with screw rod (5) in the installation passage, screw rod (5) both ends pass through bearing It is fixed in installation passage, nut seat (51) is arranged with the screw rod (5), the positioning plunger (4) is vertically arranged in positioning In groove (11), and its lower end connects the nut seat (51), and the locating slot (11) is stretched out outside in upper end, and can contradict work to be processed Part, for being positioned to workpiece to be processed；

   The base (1) is provided with two groups of tracks, and two groups of tracks are respectively symmetrically distributed in the both sides of the installation passage；

   The multiple Rapid Combination hold-down mechanism (2) is separately mounted to described in two groups in track, and can be moved along corresponding track, For workpiece to be processed to be pressed on into the base (1)；

   At least two it is described be only mounted on side by side in the track of installation passage side to plunger (3), and can be along corresponding Track moves, and can contradict the workpiece to be processed, for positioning workpiece to be processed；

   The Rapid Combination hold-down mechanism (2) include bottom plate (21), sliding block (22), connecting screw (23), cam handle (24) and Clamping clip (25) is pressed, the connecting screw (23) passes through the bottom plate (21) up and down, and the bottom plate is stretched out at its both ends respectively (21) outside, the sliding block (22) is threaded in the connecting screw (23) lower end, and the sliding block (22) is slidably mounted on correspondingly Track in, and track-movable, the pressing clamping clip (25) is arranged on the top of the bottom plate (21), the cam hand Handle (24) is rotatably connected on the connecting screw (23) upper end, and its one end being connected with connecting screw (23) is contradicted at the bottom At the top of plate (21), and work as in cam handle (24) pressing rotation process, the relatively described connecting screw of the bottom plate (21) can be pressed (23) move down.
2. 2. a kind of Rapid Combination flexible fixture for large scale flat-type work pieces process according to claim 1, it is special Sign is：The Transverse rails put are set before and after including more for track described in every group and Duo Gen is vertical with Transverse rails and the perpendicular rail that is staggered, And multiple Rapid Combination hold-down mechanisms (2) are respectively symmetrically distributed in the Ren meaning Yi Gen Transverse of track described in corresponding two groups In rail or perpendicular rail, at least two are only distributed in any one perpendicular rail of the corresponding track to plunger (3).
3. 3. a kind of Rapid Combination flexible fixture for large scale flat-type work pieces process according to claim 1, it is special Sign is：The cam handle (24) includes cam part (241) and the handle portion (242) being connected with cam part (241), described convex Wheel portion (241) is rotatably installed in the upper end of the connecting screw (23) by bearing pin, and its bottom is contradicted on the bottom plate (21), When pressing down on the handle portion (242), the cam part (241) can rotate around bearing pin, in rotation process, pull down The bottom plate (21) moves down relative to connecting screw (23), bottom plate (21) is covered in the base (1) upper surface, makes bottom Plate (21) is fixed.
4. 4. a kind of Rapid Combination flexible fixture for large scale flat-type work pieces process according to claim 3, it is special Sign is：Bottom plate (21) bottom is provided with lead (211), the lead (211) and corresponding connecting screw (23) The sliding block (22) of lower end be located in Tong mono- Tiao Transverse rails or the perpendicular rail of the same track.
5. 5. a kind of Rapid Combination flexible fixture for large scale flat-type work pieces process according to claim 4, it is special Sign is：The pressing clamping clip (25) includes two connecting seats (251) being set up in parallel, pressing handle (252) and heading machine Structure (253), the pressure heads mechanism (253) are rotatably installed on one of connecting seat (251) by bearing pin, the pressing handle (252) it is rotatablely connected by bearing pin and pressure heads mechanism (253), the pressing handle (252) is also rotatably installed in separately by bearing pin On one connecting seat (251), when pulling down pressing handle (252), the pressing handle (252) drives pressure heads mechanism (253) connected one end moves up, and pressure heads mechanism (253) is moved down away from its one end, and covers the bottom of at Workpiece surface on seat (1), makes workpiece be fixed on bottom plate (1).
6. 6. a kind of Rapid Combination for large scale flat-type work pieces process according to any one of claim 1 to 5 is flexible Fixture, it is characterised in that：Described screw rod (5) one end is also connected with rotational handle (52).
7. 7. a kind of Rapid Combination for large scale flat-type work pieces process according to any one of claim 1 to 5 is flexible Fixture, it is characterised in that：Base (1) both sides are symmetrically arranged with fixed station (12), and bar shaped is provided with the fixed station (12) Fixing hole (121).
8. 8. a kind of Rapid Combination for large scale flat-type work pieces process according to any one of claim 1 to 5 is flexible Fixture, it is characterised in that：The section of track Transverse rails and perpendicular rail described in every group is disposed as T-shaped.