CN111085740B

CN111085740B - Metal part precision finishing equipment

Info

Publication number: CN111085740B
Application number: CN201911356059.3A
Authority: CN
Inventors: 林苑; 陈舒盈; 徐俊
Original assignee: Jiangxi Normal University
Current assignee: Jiangxi Normal University
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-12-01
Anticipated expiration: 2039-12-25
Also published as: CN111085740A

Abstract

The invention relates to the technical field of precision machining, and discloses metal part precision machining equipment which comprises a fixed block and a guider, wherein spring pins are movably mounted on two sides of the fixed block, pin shafts are arranged in the fixed block, return springs are sleeved on the outer edges of the pin shafts, the ends, far away from the spring pins, of the pin shafts are fixedly provided with pin heads, through holes are formed in the guider, and the top of the fixed block is movably connected with a rubber ring. This metal parts precision finishing equipment, spring pin structure through being provided with two-way joint in the both sides of fixed block, two spring pins can carry out the joint in the both sides of fixed block and fix to the director, guarantee the convenience and the stability of dismouting, the round pin head position of spring pin is provided with triangular pin head in addition, the stability of installation has further been guaranteed, make the spaciousness between round pin head and the director littleer, at the punch electrode pivoted in-process like this, the director can bring better guide effect.

Description

Metal part precision finishing equipment

Technical Field

The invention relates to the technical field of precision machining, in particular to a metal part precision machining device.

Background

The spark erosion drilling machine uses a continuously rotating thin metal copper tube (called electrode wire) as an electrode to perform pulse spark discharge erosion metal forming on a workpiece.

Referring to the attached drawing 1, the specific working principle of the spark erosion drilling machine is that an electrode 4 is fixed on a sliding block 2 through a drill chuck 3, the sliding block 2 moves downwards on the sliding base 1 to enable the electrode 4 to penetrate through a dust cover 5 and then penetrate through the center of a guider 7 on a fixed block 6, then the guider 7 is fixed on the fixed block 6 through a screwing pin 8, then an aqueous medium is communicated with the inside of the electrode 4, when current on the electrode 4 meets current on a metal workpiece, the aqueous medium is punctured, electric sparks are generated, and therefore the metal workpiece is electrically eroded at high temperature, and drilling operation is completed.

When the puncher works, holes with different diameters need to be punched on metal parts according to different processing requirements, so that the guider 7 needs to be frequently replaced to be matched with the electrode 4, the replacement of the guider 7 is controlled by the rotation of the screwing pin 8 in the conventional dismounting mode, the guider 7 needs to be rotated for multiple times in the replacement process, the operation is complicated, the screwing pin 8 is tightly connected and fixed with the guider 7 through a fulcrum, the stress of the guider 7 is unbalanced, the inclination is easy to occur, the processing precision is reduced, in addition, the conventional electrode 4 is made of copper materials, the deformation is easy to cause in the carrying process, once the deformation occurs, the detection method for the deformation is only observed by naked eyes, the scientificity is not realized, if the deformed electrode 4 works, the electrode 4 is circled in the rotating process, and the diameter of the punched hole is increased, affecting the machining accuracy.

Disclosure of Invention

The invention provides precision machining equipment for metal parts, which has the advantages of convenient bidirectional clamping and assembling of a guider, better stability and capability of monitoring the bending degree of an electrode in real time by annular pressure sensing to ensure the machining precision, and solves the problems that the existing electrode is made of copper material, is easy to deform in the carrying process, once the deformation occurs, the deformation detection method only depends on visual observation and is not scientific enough, and if the deformed electrode works, the electrode is circled in the rotating process, so that the diameter of a through hole is increased, and the machining precision is influenced.

The invention provides the following technical scheme: the utility model provides a metal part precision finishing equipment, includes fixed block and director, the equal movable mounting in both sides of fixed block has the spring catch, the inside that the spring catch is located the fixed block is equipped with the round pin axle, the round pin axle is located the inside of fixed block and has cup jointed reset spring, the one end fixed mounting that the spring catch was kept away from to the round pin axle has the round pin head, the clearing hole has been seted up to the inside of director, the top swing joint of fixed block has the rubber circle, the inside fixed mounting of rubber circle has film pressure sensor, the inside fixed mounting of rubber circle has the mainboard subassembly, the director side is located two round pin head symmetry departments and has seted up the joint position, joint position and round pin head swing joint.

Preferably, the cross section of the pin head is an equilateral triangle.

Preferably, the rubber ring is prepared from a rubber material, the inner part of the rubber ring is an arc convex surface, and the cross section of the rubber ring is arc-shaped.

Preferably, the inner shape of the card holder is matched with the shape of the pin head.

The invention has the following beneficial effects:

1. this metal parts precision finishing equipment, spring pin structure through being provided with two-way joint in the both sides of fixed block, two spring pins can carry out the joint in the both sides of fixed block and fix to the director, guarantee the convenience and the stability of dismouting, the round pin head position of spring pin is provided with triangular pin head in addition, the stability of installation has further been guaranteed, make the spaciousness between round pin head and the director littleer, at the punch electrode pivoted in-process like this, the director can bring better guide effect.

2. This metal part precision finishing equipment, top through at the fixed block is provided with annular rubber circle, the inside of rubber circle is provided with film pressure sensor, the electrode normal rotation not with the arc inner wall contact of rubber circle, in case the electrode takes place the bending, can appear the phenomenon of "drawing the circle" at the pivoted in-process, the electrode will contact rubber circle and inside film pressure sensor like this, thereby can real-time crooked condition that detects the electrode, and current detection device is generally through the naked eye observation, not scientific enough, it is not advisable.

Drawings

FIG. 1 is a schematic view of a part of a conventional piercing machine;

FIG. 2 is a schematic view of a portion of the construction of the perforator of the present invention;

FIG. 3 is a sectional view showing the internal structure of the fixing block according to the present invention;

FIG. 4 is a schematic view of the construction of the guide of the present invention;

FIG. 5 is a schematic perspective view of the rubber ring structure of the present invention;

fig. 6 is a sectional view of the rubber ring structure of the present invention.

In the figure: 1. a slide base; 2. a slider; 3. a drill chuck; 4. an electrode; 5. a dust cover; 6. a fixed block; 7. a guide; 8. screwing the pin; 9. a spring pin; 10. a pin shaft; 11. a return spring; 12. a pin head; 13. through the hole; 14. a rubber ring; 15. a thin film pressure sensor; 16. a motherboard assembly; 17. and (6) clamping the card.

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. 1-6, a precision machining device for metal parts comprises a fixed block 6 and a guider 7, wherein spring pins 9 are movably mounted on both sides of the fixed block 6, pin shafts 10 are arranged inside the fixed block 6 of the spring pins 9, return springs 11 are sleeved inside the pin shafts 10 located inside the fixed block 6, pin heads 12 are fixedly mounted at one ends of the pin shafts 10 far away from the spring pins 9, through holes 13 are formed inside the guider 7, a rubber ring 14 is movably connected to the top of the fixed block 6, a film pressure sensor 15 is fixedly mounted inside the rubber ring 14, the rubber ring 14 is made of rubber materials, the inside of the rubber ring 14 is an arc-shaped convex surface, the cross section of the rubber ring 14 is arc-shaped, and the film pressure sensor 15 can be tightly attached to the arc-shaped convex surface inside the rubber ring 14 through the arc-shaped convex surface inside the rubber ring 14, therefore, when the arc convex surface in the rubber ring 14 contacts the deformed electrode 4, the signal of the film pressure sensor 15 can be timely triggered, the cross section of the rubber ring 14 is in the shape of an arc, the rubber ring 14 can be placed into the groove at the top of the fixed block 6, the installation stability is ensured, the main board assembly 16 is fixedly installed in the rubber ring 14, the clamping positions 17 are formed in the symmetrical positions of the two pin heads 12 on the side edge of the guider 7, the shape of the inner part of each clamping position 17 is matched with that of the corresponding pin head 12, the clamping positions 17 and the pin heads 12 can be more conveniently installed through the arrangement, the shape matching is favorable for ensuring the contact area between the clamping positions 17 and the pin heads 12, the friction force is ensured, the installation stability is improved, the cross section of the pin heads 12 is in the shape of an equilateral triangle, and the connection effect between the pin heads 12 and the clamping positions 17 is better through the arrangement, the stress of joint position 17 is more even to guarantee this director 7 job stabilization nature, in addition the lateral wall of round pin head 12 for laminating director 7 has certain indent radian, guarantees the integrality of round pin head 12 and director 7 lateral wall, joint position 17 and round pin head 12 swing joint.

The theory of operation, when this device work, at first install the inside of fixed block 6 from top to bottom with director 7, then carry out the symmetry through two round pin head 12 joints to the inside of joint position 17 and fix, only need strut spring catch 9 to both sides through two fingers when dismantling and can release director 7, do not contact with the inside arcwall face of rubber circle 14 when electrode 4 normally works, in case electrode 4 takes place to warp man-hour "drawing circle", then can touch the inside arcwall face of rubber circle 14, and then make inside film pressure sensor 15 receive pressure signal, in time inform the bee calling organ and send alarm signal, can.

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 metal parts precision finishing equipment, includes fixed block (6) and director (7), its characterized in that: the equal movable mounting in both sides of fixed block (6) has spring round pin (9), the inside that spring round pin (9) are located fixed block (6) is equipped with round pin axle (10), reset spring (11) have been cup jointed in the inside that round pin axle (10) are located fixed block (6), the one end fixed mounting that spring round pin (9) were kept away from in round pin axle (10) has round pin head (12), clearing hole (13) have been seted up to the inside of director (7), the top swing joint of fixed block (6) has rubber circle (14), the inside fixed mounting of rubber circle (14) has film pressure sensor (15), the inside fixed mounting of rubber circle (14) has mainboard subassembly (16), director (7) side is located two round pin head (12) symmetry departments and has seted up joint position (17), joint position (17) and round pin head (12) swing joint.

2. A metal part precision-machining apparatus according to claim 1, characterized in that: the cross section of the pin head (12) is an equilateral triangle.

3. A metal part precision-machining apparatus according to claim 1, characterized in that: the rubber ring (14) is made of rubber materials, the inner portion of the rubber ring (14) is an arc-shaped convex surface, and the cross section of the rubber ring (14) is arc-shaped.

4. A metal part precision-machining apparatus according to claim 1, characterized in that: the inner shape of the clamping position (17) is matched with that of the pin head (12).