CN210498659U

CN210498659U - Cylinder type electrode wire guiding device with external flushing liquid filling structure

Info

Publication number: CN210498659U
Application number: CN201921302267.0U
Authority: CN
Inventors: 李宝泉; 黄正辉; 蒋锡伟
Original assignee: Wuxi Micro Research Precise Machinery Technology Co ltd
Current assignee: Wuxi Micro Research Precise Machinery Technology Co ltd
Priority date: 2019-08-12
Filing date: 2019-08-12
Publication date: 2020-05-12
Anticipated expiration: 2029-08-12

Abstract

The utility model relates to a cylinder type wire electrode guider with outer liquid filling structure that dashes, including guide structure, outer liquid filling structure and the normally open clip of cylinder type, wherein outer liquid filling structure that dashes includes the water cap and annotates the liquid end, the clip is normally opened to the cylinder type includes cylinder and clamping mechanism, and the lower extreme and the water cap upper end of director seat are equipped with screw thread and the stair structure of mutually supporting, and two sections ladder departments are equipped with first sealing washer and second sealing washer respectively, and the upper end of director seat forms the boss to extending all around, and the cylinder is installed in boss department. The utility model can make the external flushing liquid enter the processing position evenly along the inside of the water cap, prevent the deformation of the processing hole caused by the uneven flushing force of the external flushing liquid, and make the external flushing liquid enter the processing hole which is difficult to enter by direct flushing, thus improving the processing efficiency and quality; simultaneously the utility model discloses can accurately control the tight dynamics of clamp, and the maximum deformation of wire electrode does not surpass the installation space of wire electrode in the director, has improved the spark-erosion machining precision.

Description

Cylinder type electrode wire guiding device with external flushing liquid filling structure

Technical Field

The utility model belongs to the technical field of the spark-erosion machining technique and specifically relates to a cylinder type wire electrode guider with outer flushing liquid filling structure.

Background

In the electric spark machining, since the electrode wire is thin and long, the problems of deformation, bending, distortion and the like are easily generated during long-distance control, and the machining precision is influenced. Therefore, a wire guide is generally provided at the lower end of the electric discharge machine to guide the feeding and withdrawing of the wire, and the wire guide maintains the accuracy and stability of the machining direction of the wire. The electrode wire guide device is provided with an electrode wire normally-open clamp, and the external flushing liquid is needed to assist in processing in the operation process.

The normally open clamp of the electrode wire is usually arranged on a guider, is an auxiliary wire clamping tool designed for an electric spark machine tool, and is kept in an open state in the machining wire feeding process. The traditional normally-open clamp adopts an electromagnet to drive a plastic wire pressing block to fix a wire electrode on a clamping surface, so that when the normally-closed clamp at the upper part of an electric spark machine tool is opened, the wire electrode cannot move relative to the machine tool due to gravity or other external forces. The wire clamping force is high, only a mini-type push-out type electromagnet can be adopted due to limited spatial position, and the electromagnet is easy to lose effectiveness after long-term use, so that the accuracy of wire feeding processing and the use safety are influenced. The structure of part lathe has also made improvement, and normally open the clamp design for the gasbag rises tightly the formula, but the clamp force is difficult to control when the gasbag is doing the tight motion that rises, and the electrode wire is easy to be crooked because of the atress is uneven, and the gasbag rises tightly formula structure complicacy, and the maintenance is inconvenient.

The electric spark outer flushing liquid can assist electric spark machining to remove machining scraps, and is widely applied to the field of electric spark machining. At present when processing aeroengine blade air film hole, generally use brass cavity wire electrode, when the machined part will be beaten thoroughly, because lack the outer washing liquid of resistance and can follow the processing drill way and directly jet out, and annotate the liquid ware slope and set up, therefore the direction that the outer washing liquid jetted into the air film hole forms a great contained angle between with the air film hole, seriously influences the processing mouth state in air film hole. In addition, the original external flushing liquid can only play a role on the shallow surface of a machined part, when the machining depth is increased, the gap between the electrode wire and the gas film hole to be machined is narrow, the external flushing liquid is difficult to enter, and the machining efficiency is obviously reduced.

SUMMERY OF THE UTILITY MODEL

The applicant provides a cylinder type electrode wire guiding device with an external flushing liquid filling structure aiming at the defects in the prior art, and the cylinder type normally closed clamp and the external flushing liquid filling structure are combined and applied to the electrode wire guiding device, so that the utility model has the characteristics of the two structures, compared with the traditional surface direct flushing structure, an external flushing cap of a guider is added below a guider seat to guide external flushing water to uniformly enter a gas film hole along the electrode wire, thereby ensuring the stability and consistency of the shape of a processing hole; and the cylinder type electrode wire normally-open clamp can accurately control the clamping force of the electrode wire, the clamping force is uniform and stable, the deflection of the electrode wire is small after the electrode wire is clamped, and the defects that the clamping force is difficult to adjust in the traditional clamping mode and the electrode wire is greatly uncontrollably deformed are overcome.

The utility model discloses the technical scheme who adopts as follows:

a cylinder type electrode wire guiding device with an external flushing liquid filling structure comprises a guiding structure, wherein the guiding structure comprises a fixed support, a guider seat is arranged below the fixed support, the upper end of the guider seat extends to the periphery to form a boss, a first cavity and a second cavity are respectively arranged in the guider seat from top to bottom, one end of an upper guider is arranged in the fixed support, the other end of the upper guider penetrates through the first cavity and extends into the second cavity, one end of a ceramic guiding structure is embedded in the second cavity, the other end of the ceramic guiding structure extends out of the second cavity, one end of an electrode wire is arranged above the fixed support, the other end of the electrode wire sequentially penetrates through the upper guider, the guider seat and the ceramic guiding structure and extends out of the bottom end of the ceramic guiding structure, the guiding device further comprises an external flushing liquid filling structure and a cylinder type electrode wire normally open clamp, the external flushing liquid filling structure comprises a water cap and a liquid filling part, the water cap is of a sleeve-shaped structure, a fifth through hole, a fourth through hole, a third through hole and a second through hole with gradually decreasing radiuses are arranged in the water cap from top to bottom, the fifth through hole, the fourth through hole, the third through hole and the second through hole are sequentially connected to form a stepped hole, the lower end of the second through hole is connected with a conical structure, the bottom of the conical structure is provided with the first through hole, a liquid injection port penetrating through the wall of the water cap is formed in the hole wall of the third through hole, the liquid injection part comprises a liquid injection pipe and a connecting piece, and the liquid injection port is communicated with the liquid injection pipe through the connecting piece; the electrode wire normally-open clamp comprises a fixed support, a guider seat is arranged below the fixed support, the upper end of the guider seat extends to the periphery to form a boss, a first cavity and a second cavity are respectively arranged in the guider seat from top to bottom, one end of the guider is arranged in the fixed support, the other end of the guider passes through the first cavity and extends into the second cavity, one end of the ceramic guide structure is arranged in the second cavity, the other end of the ceramic guide structure extends out of the second cavity, one end of the wire electrode is arranged above the fixed support, the other end of the wire electrode sequentially passes through the guider, the guider seat and the ceramic guide structure and extends out from the bottom end of the ceramic guide structure, a through hole is arranged on the side wall of the boss, an air cylinder is arranged in the through hole, and one end of the air cylinder extending into the first cavity, and a clamping hole is formed on the side wall of the upper guider along the opposite position of the clamping block and the upper guider.

The further technical scheme is as follows:

the first through hole, the conical structure, the second through hole, the third through hole, the fourth through hole and the fifth through hole are coaxially arranged;

the diameter of the liquid injection port is smaller than the length of the third through hole;

the section of the joint of the conical structure and the second through hole is circular, and the diameter of the circular section is the same as that of the second through hole;

a first sealing ring is arranged on a platform formed by connecting the third through hole and the fourth through hole;

a second sealing ring is arranged on a platform formed by connecting the fourth through hole and the fifth through hole;

the first sealing ring and the second sealing ring are hollow structures;

threads are arranged on the inner walls of the fourth through hole and the liquid injection port;

the clamping block is of a cylindrical hard plastic structure, the length of the clamping block is 4-5 mm, and the diameter of the clamping block is 5-6 mm;

the diameter of the cylinder is 5-6 millimeters, the stroke of the cylinder is 1-3 millimeters, the length of the cylinder is 26-27 millimeters, and the clamping force of the cylinder is 3-5 newtons.

The utility model has the advantages as follows:

the utility model discloses an increase a director outer washing cap below director seat, avoid outer washing to directly wash and drench the processing department, make outer washing hydroenergy evenly enter the processing department along the inside of water cap, prevent the processing hole deformation that leads to because of the local impulsive force inequality of outer washing from warping, also make outer washing hydroenergy enter directly wash and drench the processing hole that is difficult to enter, improve machining efficiency and quality; meanwhile, the utility model can accurately control the clamping force by controlling the opening and closing of the electrode wire normally-open clamp through the cylinder, and the maximum deformation of the electrode wire does not exceed the installation space of the electrode wire in the guider, compared with the traditional electromagnet structure and air expansion structure, the clamping force is easier to adjust, the deformation of the electrode wire is smaller, the falling phenomenon of the electrode wire due to insufficient clamping force is avoided, the uncontrollable deformation of the electrode wire due to uneven clamping force is avoided, and the electric spark machining precision is improved; compared with the traditional guide structure, the utility model discloses a wire electrode control accuracy is higher, and control process is more stable, and the centre gripping of wire electrode is adjusted more conveniently, and the processing effect is more ideal, and machining efficiency is showing and is promoting.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an enlarged view of the cylinder structure of the present invention.

Fig. 3 is a schematic view of the water cap structure of the present invention.

Wherein: 1. a water cap; 101. a first through hole; 102. a tapered structure; 103. a second through hole; 104. a third through hole; 105. a fourth via hole; 106. a fifth through hole; 107. a water cap wall; 108. a liquid injection port; 109. a first annular cavity; 110. a second annular cavity; 2. a liquid injection part; 201. a connecting member; 202. a liquid injection pipe; 3. A second seal ring; 4. a guider seat; 401. a boss; 402. a second cavity; 403. a first cavity; 5. Fixing a bracket; 6. an upper guide; 7. a wire electrode; 8. a cylinder; 801. a clamping block; 802. a clamping hole; 9. a first seal ring; 10. externally washing the liquid; 11. processing a workpiece; 12. a gas film hole; 13. a ceramic guide structure.

Detailed Description

The following describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1-3, the utility model comprises a guiding structure, the guiding structure comprises a fixing support 5, a guiding seat 4 is arranged under the fixing support 5, the upper end of the guiding seat 4 extends to the periphery to form a boss 401, a first cavity 403 and a second cavity 402 are respectively arranged in the guiding seat 4 from top to bottom, one end of an upper guiding device 6 is arranged in the fixing support 5, the other end passes through the first cavity 403 and extends into the second cavity 402, one end of a ceramic guiding structure 13 is embedded in the second cavity 402, the other end of the ceramic guiding structure 13 extends out of the second cavity 402, one end of a wire electrode 7 is arranged above the fixing support 5, the other end sequentially passes through the upper guiding device 6, the guiding seat 4 and the ceramic guiding structure 13 and extends out of the bottom end of the ceramic guiding structure 13, the guiding device further comprises an external liquid filling structure and a cylinder type wire electrode normally open clamp, the external flushing liquid filling structure comprises a water cap 1 and a liquid injection part 2, wherein the water cap 1 is of a sleeve-shaped structure, a fifth through hole 106, a fourth through hole 105, a third through hole 104 and a second through hole 103 with gradually decreasing radiuses are arranged in the water cap 1 from top to bottom, the fifth through hole 106, the fourth through hole 105, the third through hole 104 and the second through hole 103 are sequentially connected to form a stepped hole, the lower end of the second through hole 103 is connected with a conical structure 102, the bottom of the conical structure 102 is provided with a first through hole 101, a liquid injection port 108 penetrating through a wall 107 of the water cap is formed in the wall of the third through hole 104, the liquid injection part 2 comprises a liquid injection pipe 202 and a connecting piece 201, and the liquid injection port 108 is communicated with the liquid injection pipe 202 through the; the electrode wire normally-open clamp comprises a cylinder 8, a through hole is formed in the side wall of a boss 401, the cylinder 8 is arranged in the through hole, one end, extending into a first cavity 403, of the cylinder 8 is connected with a clamping block 801, and a clamping hole 802 is formed in the side wall, opposite to the upper guider 6, of the clamping block 801 and along the upper guider 6. The first through hole 101, the conical structure 102, the second through hole 103, the third through hole 104, the fourth through hole 105 and the fifth through hole 106 are all coaxially arranged, and the diameter of the liquid injection port 108 is smaller than the length of the third through hole 104. The section of the connection part of the conical structure 102 and the second through hole 103 is circular, and the diameter of the circular section is the same as that of the second through hole 103. The first sealing ring 9 is arranged on a platform formed by connecting the third through hole 104 and the fourth through hole 105, the second sealing ring 3 is arranged on a platform formed by connecting the fourth through hole 105 and the fifth through hole 106, the first sealing ring 9 and the second sealing ring 3 are hollow structures, and threads are arranged on the inner walls of the fourth through hole 105 and the liquid injection port 108. The clamping block 801 is of a cylindrical hard plastic structure, the length of the clamping block 801 is 4-5 mm, the diameter of the clamping block 801 is 5-6 mm, the diameter of the air cylinder 8 is 5-6 mm, the stroke of the air cylinder 8 is 1-3 mm, the length of the air cylinder 8 is 26-27 mm, and the clamping force of the air cylinder 8 is 3-5N.

The utility model discloses the concrete assembly and the use of well foreign-style liquid filling structure are as follows:

as shown in fig. 1-2, the lower end of the guide seat 4 is also stepped, a hollow cylindrical ceramic guide structure 13 is embedded in the guide seat 4, the bottom of the ceramic guide structure 13 is provided with a cone angle matched with the conical structure 102, and the center of the ceramic guide structure 13 is provided with an electrode wire 7 in a penetrating manner. The guide seat 4 is matched with the fourth through hole 105 through threads, the first sealing ring 9 is arranged at the bottom of the guide seat 4 on a platform formed by connecting the third through hole 104 and the fourth through hole 105, the outer diameter of the first sealing ring 9 is the same as the diameter of the fourth through hole 105, and the inner diameter of the first sealing ring 9 is the same as the outer diameter of the ceramic guide structure 13. And a second sealing ring 3 is arranged between a platform formed by connecting the fourth through hole 105 and the fifth through hole 106 and the guide seat 4, the outer diameter of the second sealing ring 3 is the same as the diameter of the fifth through hole 106, and the inner diameter of the second sealing ring 3 is the same as the outer diameter of the ceramic guide structure 13. A first annular cavity 109 is formed between the third through hole 104 and the ceramic guide structure 13, and because the top of the first annular cavity 109 is sealed by the first sealing ring 9, when the external flushing liquid 10 flows into the first annular cavity 109 through the liquid injection pipe 202, the connecting piece 201 and the liquid injection port 108, the liquid cannot enter the upper fourth through hole 105, and at the moment, the first annular cavity 109 can contain and disperse the external flushing liquid 10. A narrow second annular cavity 110 is formed between the second through hole 103 and the ceramic guide structure 13, when the external flushing liquid 10 flows through the second annular cavity 110, the flow speed is accelerated under the influence of pressure, the external flushing water is converged at the conical structure 102 at the bottom to form high-speed and uniform external flushing water flow, and the external flushing water flow flows out along the periphery of the electrode wire 7 at the first through hole 101. Because the water flow direction is almost parallel to the wire electrode 7 and is tightly attached to the wire electrode 7 to flow uniformly, when the external flushing liquid 10 contacts the air film hole 12, excessive impact on the hole opening is avoided, the hole shape is not influenced due to uneven stress, and the processing quality is improved. Just the utility model discloses enable outer washing liquid 10 and wait to process the darker position in air film hole 12 on getting into machined part 11, 7 degree of depth processing of auxiliary electrode silk have greatly improved work efficiency. The utility model discloses the external structure of water cap 1 can be along with the operating mode of difference and do suitable adjustment, if the installation environment is comparatively narrow and small, 1 lower extreme of water cap can the internal contraction, and the cylinder that is the external diameter littleer through the transition of one section conical surface also can be according to actual need do other and do not influence inner structure's adjustment.

The utility model discloses the use of clamp is normally opened to middle cylinder type wire electrode as follows:

when the electrode wire 7 normally feeds, the utility model discloses be in normally open state, press from both sides tight piece 801 this moment and lie in outside the tight hole 802 of clamp or partly stretch into the tight hole 802 of clamp but not contact electrode wire 7. When the normally closed clip of spark-erosion machine tool upper end was opened, the utility model discloses get into closed state, press from both sides tight piece 801 promptly and stretch into in pressing from both sides tight hole 802 to press wire electrode 7 on the mounting hole pore wall that wire electrode 7 was seted up with presetting the packing force with the inside of last director 6. The clamping block 801 is of a hard plastic structure, and the surface of the clamping block has no sharp edges and corners, so that the wire electrode 7 cannot be damaged. The deformation range of the wire electrode 7 is limited in the mounting hole inside the upper guide 6, the deformation amount is small, and the influence on the processing precision is small. In the pressing process, the clamping blocks 801 uniformly apply pressing force, the wire electrode 7 cannot deform uncontrollably in direction, the size of the pressing force can be accurately controlled through means such as a servo motor and the like, corresponding adjustment can be carried out along with the change of the wire electrode 7, and the use is more flexible.

The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made within the scope of the invention.

Claims

1. The cylinder type electrode wire guiding device with the external flushing liquid filling structure comprises a guiding structure, wherein the guiding structure comprises a fixing support (5), a guide seat (4) is arranged below the fixing support (5), the upper end of the guide seat (4) extends to the periphery to form a boss (401), a first cavity (403) and a second cavity (402) are respectively arranged in the guide seat (4) from top to bottom, one end of an upper guider (6) is arranged in the fixing support (5), the other end of the upper guider passes through the first cavity (403) and extends into the second cavity (402), one end of a ceramic guiding structure (13) is embedded in the second cavity (402), the other end of the ceramic guiding structure (13) extends out of the second cavity (402), one end of an electrode wire (7) is arranged above the fixing support (5), and the other end of the electrode wire sequentially passes through the upper guider (6), The guide device comprises a guide device seat (4), a ceramic guide structure (13) and a guide device, wherein the guide device seat extends out from the bottom end of the ceramic guide structure (13), and is characterized in that: the guiding device also comprises an external flushing liquid filling structure and a cylinder type electrode wire normally-open clamp;

the external liquid filling structure comprises a water cap (1) and a liquid injection part (2), wherein the water cap (1) is of a sleeve-shaped structure, a fifth through hole (106), a fourth through hole (105), a third through hole (104) and a second through hole (103) with gradually decreased radiuses are arranged in the water cap (1) from top to bottom, the fifth through hole (106), the fourth through hole (105), the third through hole (104) and the second through hole (103) are sequentially connected to form a stepped hole, the lower end of the second through hole (103) is connected with a conical structure (102), the bottom of the conical structure (102) is provided with a first through hole (101), a liquid injection port (108) penetrating through a water cap wall (107) is formed in the hole wall of the third through hole (104), the liquid injection part (2) comprises a liquid injection pipe (202) and a connecting piece (201), and the liquid injection port (108) is communicated with the liquid injection pipe (202) through the connecting piece (201);

the electrode wire normally-open clamp comprises a cylinder (8), a through hole is formed in the side wall of a boss (401), the cylinder (8) is arranged in the through hole, one end, extending into a first cavity (403), of the cylinder (8) is connected with a clamping block (801), and a clamping hole (802) is formed in the side wall of the upper guider (6) along the position, opposite to the upper guider (6), of the clamping block (801).

2. The cylinder type wire electrode guiding device with the external flushing liquid filling structure as claimed in claim 1, wherein: the first through hole (101), the conical structure (102), the second through hole (103), the third through hole (104), the fourth through hole (105) and the fifth through hole (106) are all coaxially arranged.

3. The cylinder type wire electrode guiding device with the external flushing liquid filling structure as claimed in claim 1, wherein: the diameter of the liquid injection port (108) is smaller than the length of the third through hole (104).

4. The cylinder type wire electrode guiding device with the external flushing liquid filling structure as claimed in claim 2, wherein: the section of the connection part of the conical structure (102) and the second through hole (103) is circular, and the diameter of the circular section is the same as that of the second through hole (103).

5. The cylinder type wire electrode guiding device with the external flushing liquid filling structure as claimed in claim 2, wherein: and a first sealing ring (9) is arranged on a platform formed by connecting the third through hole (104) and the fourth through hole (105).

6. The cylinder type wire electrode guiding device with the external flushing liquid filling structure as claimed in claim 2, wherein: and a second sealing ring (3) is arranged on a platform formed by connecting the fourth through hole (105) and the fifth through hole (106).

7. The cylinder type wire electrode guiding device with the external flushing liquid filling structure as claimed in any one of claims 5 to 6, wherein: the first sealing ring (9) and the second sealing ring (3) are hollow structures.

8. The cylinder type wire electrode guiding device with the external flushing liquid filling structure as claimed in claim 1, wherein: the inner walls of the fourth through hole (105) and the liquid injection port (108) are both provided with threads.

9. The cylinder type wire electrode guiding device with the external flushing liquid filling structure as claimed in claim 1, wherein: the clamping block (801) is of a cylindrical hard plastic structure, the length of the clamping block (801) is 4-5 mm, and the diameter of the clamping block (801) is 5-6 mm.

10. The cylinder type wire electrode guiding device with the external flushing liquid filling structure as claimed in claim 1, wherein: the diameter of the air cylinder (8) is 5-6 mm, the stroke of the air cylinder (8) is 1-3 mm, the length of the air cylinder (8) is 26-27 mm, and the clamping force of the air cylinder (8) is 3-5N.