Machine tool working fluid spraying device for micro shaft machining

Abstract

The utility model relates to the technical field of micro shaft machining, and discloses a machine tool working fluid spraying device for micro shaft machining, which comprises a portal frame, an electromagnetic valve is fixedly arranged on the surface of the portal frame, and the input end of the electromagnetic valve is fixedly connected with a water inlet pipe. Water flow is accurately guided to the micro shaft through a thin outlet of the electromagnetic valve, so that it is guaranteed that related positions can be effectively treated in the machining process, the machining precision and effect are improved, the convex block capable of sliding in the spray head base in a sealed mode is arranged, when water spraying is not needed, the convex block slides rapidly, and the water spraying effect is improved. Water in the needle head can be sucked into the spray head seat, the interior of the spray head seat is sealed, the situation that water in the bamboo joint pipe slowly drips through the needle head when the water pump is closed is avoided, the working table top can be effectively kept in a dry state, the integrity of the working table top is protected, and the maintenance or replacement frequency caused by moisture is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of micro-shaft processing, and more specifically to a machine tool working fluid injection device used for micro-shaft processing. Background Art

[0002] The electrode equipment output device is a key component for the electrode equipment to transfer electrical energy to the micro-axis processing area and realize discharge machining. Its main function is to accurately transmit the high-energy pulse current generated by the electrode to the processing part of the micro-axis, so that the workpiece material is melted and vaporized at high temperature in an instant, thereby removing the material and achieving the purpose of processing the micro-axis. The working fluid injection device plays a vital role in micro-axis processing. It is mainly responsible for spraying the working fluid into the processing area at a certain pressure and flow rate. The working fluid has insulation, cooling, chip removal and other functions. The insulation function can ensure that the discharge between the electrode and the workpiece can proceed normally to avoid short circuit. The cooling function can promptly take away the heat generated during the processing to prevent the workpiece and electrode from deformation and loss due to overheating; the chip removal function is to wash away impurities such as metal chips generated during the processing to avoid their accumulation in the processing area and affect the processing accuracy and stability.

[0003] However, traditional working fluid injection directly sprays the working fluid through a water pipe. The water flow sprayed by the water pipe has a wide coverage range and is difficult to accurately locate to the specific parts required for micro-axis processing, which easily leads to unnecessary flushing of non-critical processing areas. Due to the wide coverage of the water flow and inaccurate positioning, the working fluid will excessively flush the processed surface of the micro-axis or adjacent non-critical areas, causing unnecessary small displacements of the micro-axis. For example, in the precision turning of micro-axis, the shaft segment with a diameter error of within a few microns is originally to be turned. Due to the excess flushing, the shaft body shakes, and the final processed shaft diameter size deviation exceeds the allowable range, which cannot meet the high-precision assembly requirements and affects the performance of the entire micro-mechanical product. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the utility model provides a machine tool working fluid injection device for micro-shaft processing to solve the problems existing in the above-mentioned background technology.

[0005] The utility model provides the following technical solution: a machine tool working fluid injection device for micro-axis processing, comprising a gantry, a solenoid valve is fixedly installed on the surface of the gantry, an input end of the solenoid valve is fixedly connected to a water inlet pipe, an output end of the solenoid valve is fixedly connected to a bamboo tube, and an injection assembly is installed at one end of the bamboo tube away from the solenoid valve;

[0006] The spray assembly includes a nozzle seat threadedly fixedly connected to the output end of the bamboo tube, a fixed block fixedly connected inside the nozzle seat, a sliding plate slidably connected inside the fixed block, a connecting rod fixedly connected to the bottom of the sliding plate, a return spring movably sleeved on the outer surface of the connecting rod, water inlet grooves equidistantly provided inside the fixed block, a convex block fixedly connected to the end of the connecting rod away from the sliding plate, a water groove provided at the inner center of the convex block, water inlet holes equidistantly provided on the outer surface of the convex block, a threaded sealing tube threadedly sealed at the inner bottom end of the nozzle seat, a needle fixedly connected through the inner center of the threaded sealing tube.

[0007] Furthermore, a sealing assembly is installed inside the nozzle seat, and the sealing assembly includes a connecting groove and a limit groove opened inside the nozzle seat, the internal sealing sliding connection of the limit groove is connected to the limit block, the surface of the limit block is fixedly connected to the sealing plate, and the outer surface of the sealing plate is movably installed with a tension spring.

[0008] Furthermore, a water pump is fixedly installed at the input end of the water inlet pipe, and the water pump is placed in a circulating water pool. The electrode device body is fixedly installed at the center of the surface of the gantry, and the output end of the needle faces directly below the electrode device body.

[0009] Furthermore, a sealing gasket is fixedly mounted on the upper surface of the convex block, and the upper surface of the convex block is sealed and attached to the lower surface of the fixed block through the sealing gasket.

[0010] Furthermore, the outer surface of the sealing plate is sealingly slidably connected to the inside of the communicating groove, and the inside of the limiting groove is connected to the inside of the nozzle seat through the communicating groove.

[0011] Furthermore, the outer surface of the convex block is sealingly slidably connected to the inside of the nozzle seat, and the water groove is connected to the inside of the water inlet hole.

[0012] Technical effects and advantages of the utility model:

[0013] 1. The utility model can flexibly control the injection amount by installing a needle and a solenoid valve, so as to accurately guide the water flow to the fine axis by virtue of the thinner outlet of the solenoid valve, thereby ensuring that the relevant positions in the processing process can be effectively processed, improving the processing accuracy and effect, and by providing a convex block that can slide sealably inside the nozzle seat, when there is no need to spray water, the convex block can quickly slide to suck the water inside the needle into the nozzle seat, and the inside of the nozzle seat can be sealed to prevent the water inside the bamboo tube from slowly dripping through the needle when the water pump is turned off. It can effectively maintain the work surface in a dry state, protect the integrity of the work surface, and reduce maintenance or replacement caused by moisture.

[0014] 2. The utility model can further seal the bottom of the nozzle seat by installing a sealing component to prevent residual water in the nozzle seat from falling through the needle. At the same time, when the needle is not installed, it can also prevent foreign debris and dust from entering the nozzle seat and polluting the interior of the nozzle seat, thereby affecting the sealing of the sliding convex block. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the connection between the bamboo tube and the injection assembly in the utility model;

[0017] Figure 3 It is a cross-sectional view of the injection assembly in the utility model;

[0018] Figure 4 for Figure 3 The enlarged view of point A in the middle;

[0019] Figure 5 It is a structural schematic diagram of the fixing block in the utility model;

[0020] Figure 6 It is a structural schematic diagram of the convex block in the utility model;

[0021] Figure 7 for Figure 3 Enlarged view of point B in the middle.

[0022] The accompanying drawings are marked as follows: 1. gantry; 2. solenoid valve; 3. water inlet pipe; 4. bamboo tube; 5. injection assembly; 51. nozzle seat; 52. fixing block; 53. sliding plate; 54. connecting rod; 55. reset spring; 56. water inlet groove; 57. convex block; 58. water trough; 59. water inlet hole; 510. threaded sealing tube; 511. needle; 6. sealing assembly; 61. connecting groove; 62. limit groove; 63. limit block; 64. sealing plate; 65. tension spring. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with specific embodiments. However, people familiar with the art should understand that the detailed description given here in conjunction with the drawings is for better explanation, and the structure of the present invention necessarily exceeds these limited embodiments. For some equivalent replacement schemes or common means, they are no longer described in detail herein, but still fall within the scope of protection of the present application.

[0024] Figure 1-Figure 7 It is the best embodiment of the utility model, and the following Figure 1-Figure 7 The utility model is further described.

[0025] Specifically, a machine tool working fluid injection device for micro-axis machining includes a gantry 1, a solenoid valve 2 is fixedly installed on the surface of the gantry 1, an input end of the solenoid valve 2 is fixedly connected to a water inlet pipe 3, an output end of the solenoid valve 2 is fixedly connected to a bamboo tube 4, and an injection assembly 5 is installed at one end of the bamboo tube 4 away from the solenoid valve 2;

[0026] The spray assembly 5 includes a nozzle seat 51 which is threadedly fixedly connected to the output end of the bamboo tube 4, a fixed block 52 is fixedly connected inside the nozzle seat 51, a sliding plate 53 is slidably connected inside the fixed block 52, a connecting rod 54 is fixedly connected to the bottom of the sliding plate 53, a return spring 55 is movably sleeved on the outer surface of the connecting rod 54, water inlet grooves 56 are equidistantly provided inside the fixed block 52, a convex block 57 is fixedly connected to the end of the connecting rod 54 away from the sliding plate 53, a water trough 58 is provided at the inner center of the convex block 57, and water inlet holes 59 are equidistantly provided on the outer surface of the convex block 57, a threaded sealing tube 510 is threadedly sealed at the inner bottom end of the nozzle seat 51, a needle 511 is fixedly connected through the inner center of the threaded sealing tube 510, a water pump is fixedly installed at the input end of the water inlet pipe 3, and the water pump is placed in a circulating water pool, an electrode device body is fixedly installed at the surface center of the gantry 1, and the output end of the needle 511 faces directly below the electrode device body.

[0027] In the present embodiment, by installing the needle 511 and the solenoid valve 2, the injection amount can be flexibly controlled, so that the water flow can be accurately guided to the fine axis by means of the thinner outlet of the solenoid valve 2, thereby ensuring that the relevant positions in the processing process can be effectively processed, improving the processing accuracy and effect, and by providing a convex block 57 that can slide sealably inside the nozzle seat 51, when there is no need to spray water, the convex block 57 can slide quickly to suck the water inside the needle 511 into the nozzle seat 51, and the inside of the nozzle seat 51 can be sealed to prevent the water inside the bamboo tube 4 from slowly dripping through the needle 511 when the water pump is turned off, which can effectively maintain the work surface in a dry state, protect the integrity of the work surface, and reduce the cost of repairs or replacements caused by moisture.

[0028] Specifically, a sealing assembly 6 is installed inside the nozzle seat 51, and the sealing assembly 6 includes a connecting groove 61 and a limit groove 62 opened inside the nozzle seat 51. The internal sealing sliding connection of the limit groove 62 is connected to the limit block 63. The surface of the limit block 63 is fixedly connected to a sealing plate 64, and the outer surface of the sealing plate 64 is movably installed with a tension spring 65.

[0029] In this embodiment, by installing the sealing assembly 6, the bottom end of the nozzle seat 51 can be further sealed to prevent residual water in the nozzle seat 51 from falling through the needle 511. At the same time, when the needle 511 is not installed, it can also prevent foreign debris and dust from entering the nozzle seat 51 and polluting the interior of the nozzle seat 51, thereby affecting the sliding sealing of the convex block 57.

[0030] Specifically, a sealing gasket is fixedly installed on the upper surface of the convex block 57 , and the upper surface of the convex block 57 is sealed and attached to the lower surface of the fixed block 52 through the sealing gasket.

[0031] In this embodiment, by providing a sealing gasket, the sealing performance of the convex block 5 and the fixing block 52 after being attached to each other can be enhanced.

[0032] Specifically, the outer surface of the sealing plate 64 is sealingly slidably connected to the inside of the communicating groove 61 , and the inside of the limiting groove 62 is connected to the inside of the nozzle seat 51 through the communicating groove 61 .

[0033] In this embodiment, since the interior of the limiting groove 62 is connected to the interior of the nozzle seat 51 through the connecting groove 61, when the water pressure inside the nozzle seat 51 increases, the internal pressure of the limiting groove 62 can also increase.

[0034] Specifically, the outer surface of the convex block 57 is sealingly slidably connected to the inside of the nozzle seat 51, and the water groove 58 and the inside of the water inlet hole 59 are connected.

[0035] In this embodiment, when the water inlet hole 59 intersects with the water inlet groove 56 , the working fluid can enter the water channel 58 through the water inlet groove 56 and the water inlet hole 59 .

[0036] The working principle and use process of the utility model are as follows: when in use, first open the solenoid valve 2, then start the water pump, and transport the water in the pool to the inside of the nozzle seat 51 through the water pump, the water inlet pipe 3, the solenoid valve 2 and the bamboo tube 4. Then the water pressure inside the nozzle seat 51 increases, and the water flows through the water inlet groove 56 into the fixed block 52. As the water pressure continues to increase, it drives the fixed block 52 to slide downward. When the output end of the water inlet groove 56 intersects with the water inlet hole 59, the high-pressure water flows through the water inlet groove 56 and the water inlet hole 59. 9 enters the water tank 58, and then passes through the nozzle seat 51. At this time, the nozzle seat 51 is in a strong pressure state, and the limit groove 62 is also in a strong pressure state through the connecting groove 61, and drives the sealing plate 64 to slide to the left, so that the nozzle seat 51 is in a connected state with the threaded sealing tube 510, and finally passes through the threaded sealing tube 510 and is sprayed out through the needle 511. When water spraying is not needed, after the water pump is turned off, the water pressure inside the bamboo tube 4 and the nozzle seat 51 gradually decreases, and the reset spring 5 5, the sliding plate 53 drives the water tank 58 to slide upward through the connecting rod 54. When the output end of the water inlet tank 56 and the water inlet hole 59 do not intersect, the upward sliding of the fixed block 52 will quickly suck the water inside the needle 511 into the nozzle seat 51, which can prevent the water inside the needle 511 from dripping, effectively maintain the work surface in a dry state, protect the integrity of the work surface, and reduce the cost of maintenance or replacement caused by moisture. When the fixed block 52 slides upward, the nozzle seat 51 The part is gradually in a normal pressure state. At this time, the elasticity of the tension spring 65 drives the limit block 63 and the sealing plate 64 to slide slowly to the right. When the liquid in the needle 511 is completely absorbed, the bottom end of the nozzle seat 51 can be further sealed to prevent the residual water in the nozzle seat 51 from falling through the needle 511. At the same time, when the needle 511 is not installed, it can also prevent foreign debris and dust from entering the nozzle seat 51 and polluting the interior of the nozzle seat 51, thereby affecting the sealing of the sliding of the convex block 57.

[0037] The above is only the preferred embodiment of the utility model, and does not limit the utility model in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the technical solution of the utility model still belongs to the protection scope of the technical solution of the utility model.

Claims

1. A machine tool working fluid injection device for micro-shaft machining, comprising a gantry (1), characterized in that: A solenoid valve (2) is fixedly mounted on the surface of the gantry (1); an input end of the solenoid valve (2) is fixedly connected to a water inlet pipe (3); an output end of the solenoid valve (2) is fixedly connected to a bamboo tube (4); an end of the bamboo tube (4) away from the solenoid valve (2) is mounted with a spray assembly (5); The spray assembly (5) comprises a nozzle seat (51) threadedly fixedly connected to the output end of the bamboo tube (4); a fixed block (52) is fixedly connected inside the nozzle seat (51); a sliding plate (53) is slidably connected inside the fixed block (52); a connecting rod (54) is fixedly connected to the bottom of the sliding plate (53); a return spring (55) is movably sleeved on the outer surface of the connecting rod (54); water inlet grooves (56) are equidistantly provided inside the fixed block (52); a convex block (57) is fixedly connected to one end of the connecting rod (54) away from the sliding plate (53); a water passing groove (58) is provided at the center of the convex block (57); water inlet holes (59) are equidistantly provided on the outer surface of the convex block (57); a threaded sealing tube (510) is threadedly sealedly connected to the bottom end of the nozzle seat (51); a needle (511) is fixedly connected through the center of the threaded sealing tube (510).

2. The machine tool working fluid injection device for micro-shaft machining according to claim 1, characterized in that: A sealing assembly (6) is installed inside the nozzle seat (51), and the sealing assembly (6) comprises a connecting groove (61) and a limiting groove (62) opened inside the nozzle seat (51); the limiting groove (62) is sealingly and slidably connected to a limiting block (63) inside, a sealing plate (64) is fixedly connected to the surface of the limiting block (63), and a tension spring (65) is movably installed on the outer surface of the sealing plate (64).

3. The machine tool working fluid injection device for micro-shaft machining according to claim 1, characterized in that: A water pump is fixedly mounted at the input end of the water inlet pipe (3), and the water pump is placed in a circulating water pool. An electrode device body is fixedly mounted at the center of the surface of the gantry (1), and an output end of the needle (511) faces directly below the electrode device body.

4. The machine tool working fluid injection device for micro-shaft machining according to claim 1, characterized in that: A sealing gasket is fixedly mounted on the upper surface of the convex block (57), and the upper surface of the convex block (57) is sealed and attached to the lower surface of the fixed block (52) via the sealing gasket.

5. The machine tool working fluid injection device for micro-shaft machining according to claim 2, characterized in that: The outer surface of the sealing plate (64) is sealingly slidably connected to the interior of the connecting groove (61), and the interior of the limiting groove (62) is connected to the interior of the nozzle seat (51) through the connecting groove (61).

6. The machine tool working fluid injection device for micro-shaft machining according to claim 1, characterized in that: The outer surface of the convex block (57) is sealingly slidably connected to the inside of the nozzle seat (51), and the water groove (58) and the inside of the water inlet hole (59) are connected.

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