CN111618626B

CN111618626B - Clamping and fixing device of numerical control machine tool

Info

Publication number: CN111618626B
Application number: CN202010525300.7A
Authority: CN
Inventors: 嵇海平
Original assignee: Pama Shanghai Machine Tool Co ltd
Current assignee: PAMA (SHANGHAI) MACHINE TOOL Co.,Ltd.
Priority date: 2020-06-10
Filing date: 2020-06-10
Publication date: 2021-04-02
Anticipated expiration: 2040-06-10
Also published as: CN111618626A

Abstract

The invention relates to the technical field of machine tool equipment, and discloses a clamping and fixing device of a numerical control machine tool. This tight fixing device of clamp of digit control machine tool, fixed plate two and the cooperation installation of movable fixing plate through setting up the symmetry installation for short, again with the cooperation installation of the fixed plate of longer setting symmetry installation, make the lower part of the regular work piece that the workstation upper surface was placed can be by fixed plate one and regular work piece, movable fixing plate wraps up completely, restrict the degree of freedom of four directions of regular work piece completely, and bleed under the effect that forms the negative pressure at the air extractor to the complex negative pressure hole, to the decurrent power of regular work piece, the degree of freedom of direction about the control is from top to bottom, thereby make the centre gripping of digit control machine tool to regular work piece more fixed.

Description

Clamping and fixing device of numerical control machine tool

Technical Field

The invention relates to the technical field of machine tool equipment, in particular to a clamping and fixing device of a numerical control machine tool.

Background

The numerical control machine tool is a numerical control machine tool for short, and is an automatic machine tool provided with a program control system, the control system can logically process a program specified by a control code or other symbolic instructions, decode the program, and represent the decoded program by coded numbers, parts are machined on the numerical control machine tool, the numerical control machine tool is mainly dependent on the machining program, and the numerical control machine tool is suitable for occasions where the machined parts are frequently changed, namely suitable for production of single-piece and small-batch products and development of new products, so that the production preparation period is shortened, the cost of a large amount of process equipment is saved, and the workpieces need to be further machined after being formed by a copper drum die casting process.

In the use process of the existing numerical control machine tool, the fixing plates are pushed to four directions of a workpiece by utilizing hydraulic devices arranged around the workpiece respectively, and then a cutter is used for further processing above the workpiece.

In order to ensure that the fixing plates in the four directions cannot mutually influence each other in the process of clamping the workpiece, and therefore under the condition that clamping is not fixed, the fixing plates can be used for setting a small part and a large part of workpieces, the cutter is rotated in the machining process, the workpiece is machined from the edge to the middle, the rotating cutter has downward force on the workpiece and a rotating centrifugal force during cutting, and particularly when the edge part of a thin workpiece is machined, the workpiece is broken and damaged, the machining effect is influenced, and the machining yield is reduced.

Disclosure of Invention

The invention provides a clamping and fixing device of a numerical control machine tool, which has the advantages of more limited degrees of freedom, better workpiece fixing performance and better fixing performance on irregular workpieces, and solves the problems that the limited degrees of freedom are insufficient, the irregular workpieces are easy to damage during fixing, and the fixing performance is poor.

The invention provides the following technical scheme: a clamping and fixing device of a numerical control machine tool comprises a machine body, wherein a workbench is fixedly arranged in the middle of the upper surface of the machine body, a support is fixedly arranged in the middle of the periphery of the machine body, a hydraulic device is fixedly sleeved in the support, a first fixing plate is fixedly arranged at one end of the hydraulic device which is symmetrically arranged left and right, a second fixing plate is fixedly arranged at one end of the hydraulic device which is symmetrically arranged front and back, a regular workpiece is clamped between the first fixing plate and the second fixing plate, matching keys are integrally formed on two sides of the second fixing plate, movable fixing plates are slidably arranged on two sides of the second fixing plate through the matching keys, a matching groove matched with the size of the matching keys is formed in one side of the movable fixing plates, which is in contact with the second fixing plate, a negative pressure hole is formed in the middle of the upper surface of the workbench and is in a, the exhaust hole is communicated with the negative pressure hole, and an air extractor is fixedly mounted on one side of the workbench, which is communicated with the exhaust hole.

As preferred, the mounting groove has been seted up to one side of fixed plate one, fixed plate two, movable fixing plate and regular work piece contact, fixed plate one, fixed plate two, movable fixing plate have the worker's word board through mounting groove movable mounting, the centre gripping has the irregularity in the middle of fixed plate one, fixed plate two, the movable fixing plate, the fixed slot has been seted up in the front of worker's word board, the positive inside of worker's word board has the maintenance frame through fixed slot fixed mounting, the front of worker's word board is through the fixed mounting elastic rubber cover of fixed slot with the cooperation of maintenance frame, the positive middle part fixed mounting of worker's word board has the permanent magnetism board, the front of permanent magnetism board and the inside movable mounting who is located elastic rubber cover.

Preferably, the permanent magnetic beads are spherical, the permanent magnetic plates and the permanent magnetic plates are magnetic, the diameter of each permanent magnetic plate is 5mm, and the contact surfaces of the permanent magnetic plates and the permanent magnetic beads are provided with regularly arranged ball grooves which are consistent with the size of the permanent magnetic beads.

Preferably, the upper surface of I-shaped plate is fixedly provided with a limiting frame, and a limiting plate is movably arranged between the upper surface of I-shaped plate and the limiting frame.

Preferably, the elastic rubber sleeve is made of a rubber material which is easily deformable.

Preferably, the diameter of the permanent magnetic bead is larger than the aperture of the Y-shaped lower part of the negative pressure hole, and the diameter of the negative pressure hole is 3 mm.

The invention has the following beneficial effects:

this tight fixing device of clamp of digit control machine tool, fixed plate two and the cooperation installation of movable fixing plate through setting up the symmetry installation for short, again with the cooperation installation of the fixed plate of longer setting symmetry installation, make the lower part of the regular work piece that the workstation upper surface was placed can be by fixed plate one and regular work piece, movable fixing plate wraps up completely, restrict the degree of freedom of four directions of regular work piece completely, and bleed under the effect that forms the negative pressure at the air extractor to the complex negative pressure hole, to the decurrent power of regular work piece, the degree of freedom of direction about the control is from top to bottom, thereby make the centre gripping of digit control machine tool to regular work piece more fixed.

Drawings

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

FIG. 2 is a schematic top view of a regular workpiece holding structure according to the present invention;

FIG. 3 is a schematic top view of the worktable according to the present invention;

FIG. 4 is a schematic top view of the irregular workpiece clamping structure of the present invention;

FIG. 5 is a schematic view of a half-section of the packing of the present invention;

FIG. 6 is a perspective view of the closure of the present invention;

fig. 7 is an enlarged schematic view of the movable fixing plate of the present invention.

In the figure: 1. a body; 2. a work table; 3. a support; 4. a hydraulic device; 5. a first fixing plate; 6. a second fixing plate; 7. a regular workpiece; 8. a movable fixing plate; 9. a mating groove; 10. a mating key; 11. a negative pressure hole; 12. an exhaust hole; 13. an air extractor; 14. mounting grooves; 15. i-shaped plates; 16. an irregularity; 17. fixing grooves; 18. a retention frame; 19. an elastic rubber sleeve; 20. a permanent magnet plate; 21. permanent magnetic beads; 22. a limiting frame; 23. and a limiting plate.

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. 1-7, a clamping and fixing device of a numerical control machine tool comprises a machine body 1, a worktable 2 is fixedly installed in the middle of the upper surface of the machine body 1, a support 3 is fixedly installed in the middle of the periphery of the machine body 1, a hydraulic device 4 is fixedly sleeved in the support 3, a first fixing plate 5 is fixedly installed at one end of the hydraulic device 4 which is symmetrically installed left and right, a second fixing plate 6 is fixedly installed at one end of the hydraulic device 4 which is symmetrically installed front and back, a regular workpiece 7 is clamped between the first fixing plate 5 and the second fixing plate 6, fitting keys 10 are integrally formed at two sides of the second fixing plate 6, movable fixing plates 8 are slidably installed at two sides of the second fixing plate 6 through the fitting keys 10, a fitting groove 9 which is matched with the fitting keys 10 in size is formed at one side where the movable fixing plates 8 are in contact with the second fixing plate 6, a negative pressure hole, exhaust hole 12 is opened to the inside of workstation 2, and exhaust hole 12 and negative pressure hole 11 UNICOM, one side UNICOM exhaust hole 12 fixed mounting of workstation 2 have air extractor 13.

Wherein, one side of the first fixing plate 5, the second fixing plate 6 and the movable fixing plate 8 contacting with the regular workpiece 7 is provided with a mounting groove 14, the first fixing plate 5, the second fixing plate 6 and the movable fixing plate 8 are movably provided with an I-shaped plate 15 through the mounting groove 14, an irregular part 16 is clamped between the first fixing plate 5, the second fixing plate 6 and the movable fixing plate 8, the front surface of the I-shaped plate 15 is provided with a fixing groove 17, the inside of the front surface of the I-shaped plate 15 is fixedly provided with a fixing frame 18 through the fixing groove 17, the front surface of the I-shaped plate 15 is fixedly provided with an elastic rubber sleeve 19 through the matching of the fixing groove 17 and the fixing frame 18, the middle part of the front surface of the I-shaped plate 15 is fixedly provided with a permanent magnetic plate 20, the permanent magnetic bead 21 is movably arranged on the front surface of the permanent magnetic plate 20 and inside the elastic rubber sleeve 19, Gaps among the second fixed plate 6, the movable fixed plate 8 and the irregular part 16 are filled, and the hydraulic device 4 is started again to perform extrusion fixing, so that the irregular part 16 can be fixed more stably.

Wherein, magnetic bead 21 forever is globular diameter and is 5mm, and all have magnetism with permanent magnetic plate 20, permanent magnetic plate 20 sets up the ball groove that accords with permanent magnetic bead 21 size that the rule was arranged with permanent magnetic bead 21 contact surface, through complex permanent magnetic plate 20 and permanent magnetic bead 21, make permanent magnetic bead 21 self closely laminate, and be connected with permanent magnetic plate 20 magnetism, it is inseparabler with the contact of irregularity 16 to extrude once more through hydraulic means 4, the filling effect of the little permanent magnetism of diameter is better simultaneously, make irregularity 16 more fixed in the course of working.

Wherein, the fixed surface of the upper surface of the I-shaped plate 15 is provided with a limiting frame 22, a limiting plate 23 is movably arranged between the upper surface of the I-shaped plate 15 and the limiting frame 22, the I-shaped plate 15 can be easily lifted through the arranged limiting frame 22, so that the operation is convenient, the limiting frame 22 which is installed in a matched mode can limit upward deformation of the permanent magnetic bead 21 after being extruded, and the permanent magnetic bead 21 can be fixed on the irregular part 16.

Wherein, the elastic rubber sleeve 19 is made of rubber material which is easy to deform, and the lower part of the irregular part 16 can be completely wrapped and fixed through the elastic rubber sleeve 19 which is easy to deform.

Wherein, the diameter of permanent magnetism bead 21 will be greater than the aperture of the lower part of "Y" type of negative pressure hole 11, the diameter of negative pressure hole 11 is 3mm, through negative pressure hole 11 and the permanent magnetism bead 21 of size regulation for the upper surface of workstation 2 is placed to irregularity 16, because irregular, some negative pressure holes 11 are not in irregularity 16's below, in order to guarantee the negative pressure effect, these negative pressure holes 11 can be filled and blockked up to permanent magnetism bead 21, make the fixed effect of negative pressure of irregularity 16 better.

The working principle of the invention is as follows:

the regular workpiece 7 is placed in the middle of the upper surface of the workbench 2, the first fixing plate 5 and the second fixing plate 6 are driven to move by starting the hydraulic devices 4 on the periphery, so that the regular workpiece 7 is clamped, when the second fixing plate 6 is too short, the first fixing plate 5, the second fixing plate 6 and the movable fixing plate 8 completely fix the lower part of the regular workpiece 7 through the matching groove 9 on the movable fixing plate 8 and the matching key 10 on the second fixing plate 6 in a matching way, the peripheral freedom degree is limited, meanwhile, the air extractor 13 starts to work to extract air from the exhaust hole 12, so that negative pressure is formed below the regular workpiece 7, further fixing of the regular workpiece 7 is achieved, when the irregular part 16 is placed on the upper surface of the workbench 2, the I-shaped plate 15 is movably installed on the first fixing plate 5, the second fixing plate 6 and the movable fixing plate 8 on the side contacting with the irregular part 16, through setting up elastic rubber sleeve 19 and the magnetic bead 21 forever in the I-shaped board 15 one side, the gap when holding anomalous piece 16 fills, utilizes limiting plate 23 to inject a plurality of magnetic beads 21's deformation direction forever simultaneously, promotes fixed plate 5, fixed plate two 6 and further fixes, reaches the effect of fixed anomalous piece 16.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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 invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a press from both sides tight fixing device of digit control machine tool, includes organism (1), the middle part fixed mounting of organism (1) upper surface has workstation (2), organism (1) middle part fixed mounting all around has support (3), the fixed cover in inside of support (3) is equipped with hydraulic means (4), and bilateral symmetry installs the one end fixed mounting of hydraulic means (4) has fixed plate (5), and the front and back symmetry is installed the one end fixed mounting of hydraulic means (4) has fixed plate two (6), its characterized in that: matching keys (10) are integrally formed on two sides of the second fixing plate (6), movable fixing plates (8) are slidably mounted on two sides of the second fixing plate (6) through the matching keys (10), and regular workpieces (7) or irregular parts (16) are clamped among the first fixing plate (5), the second fixing plate (6) and the movable fixing plates (8);

a matching groove (9) matched with a matching key (10) in size is formed in one side, in contact with the second fixing plate (6), of the movable fixing plate (8), a negative pressure hole (11) is formed in the middle of the upper surface of the workbench (2), the negative pressure hole (11) is Y-shaped, an exhaust hole (12) is formed in the workbench (2), the exhaust hole (12) is communicated with the negative pressure hole (11), and an air extractor (13) is fixedly mounted on one side, communicated with the exhaust hole (12), of the workbench (2);

the fixing device is characterized in that a mounting groove (14) is formed in one side, in contact with a regular workpiece (7), of the first fixing plate (5), the second fixing plate (6) and the movable fixing plate (8), an I-shaped plate (15) is movably mounted on the first fixing plate (5), the second fixing plate (6) and the movable fixing plate (8) through the mounting groove (14), a fixing groove (17) is formed in the front of the I-shaped plate (15), a fixing frame (18) is fixedly mounted in the front of the I-shaped plate (15) through the fixing groove (17), an elastic rubber sleeve (19) is fixedly mounted in the front of the I-shaped plate (15) through matching of the fixing groove (17) and the fixing frame (18), a permanent magnet plate (20) is fixedly mounted in the middle of the front of the I-shaped plate (15), and a permanent magnet bead (21) is movably mounted in the front of;

the permanent magnetic beads (21) are spherical, the diameter of the permanent magnetic beads is 5mm, the permanent magnetic beads and the permanent magnetic plate (20) are magnetic, and ball grooves which are regularly distributed and accord with the sizes of the permanent magnetic beads (21) are formed in the contact surface of the permanent magnetic plate (20) and the permanent magnetic beads (21);

a limiting frame (22) is fixedly arranged on the upper surface of the I-shaped plate (15), and a limiting plate (23) is movably arranged between the upper surface of the I-shaped plate (15) and the limiting frame (22);

the elastic rubber sleeve (19) is made of rubber materials which are easy to deform;

the diameter of the permanent magnetic bead (21) is larger than the aperture of the Y-shaped lower part of the negative pressure hole (11), and the diameter of the negative pressure hole (11) is 3 mm;

during use, a regular workpiece (7) is placed in the middle of the upper surface of a workbench (2), the first fixing plate (5) and the second fixing plate (6) are driven to move by starting the surrounding hydraulic devices (4), so that the regular workpiece (7) is clamped, when the second fixing plate (6) is too short, the first fixing plate (5), the second fixing plate (6) and the lower part of the regular workpiece (7) are completely fixed by the aid of the matching grooves (9) in the movable fixing plate (8) and the matching keys (10) in the second fixing plate (6) in a matching mode, surrounding freedom degrees are limited, and meanwhile, the air exhauster (13) starts to work to exhaust air from the exhaust holes (12), so that negative pressure is formed below the regular workpiece (7), and the regular workpiece (7) is further fixed;

when irregularity (16) are placed to the upper surface of workstation (2), through fixed plate (5) with irregularity (16) contact one side, fixed plate two (6), movable fixing plate (8) movable mounting has worker's word board (15), elastic rubber sleeve (19) and permanent magnetism pearl (21) through setting up in worker's word board (15) one side, gap when filling when holding irregularity (16), utilize limiting plate (23) to prescribe a limit to the deformation direction of a plurality of permanent magnetism pearls (21) simultaneously, promote fixed plate one (5), fixed plate two (6) are further fixed, reach the effect of fixed irregularity (16).