CN210498398U

CN210498398U - Central water outlet main shaft

Info

Publication number: CN210498398U
Application number: CN201921427213.7U
Authority: CN
Inventors: 戴秋生; 郑桂元
Original assignee: Aiboke Dynamo Electric Wuxi Co ltd
Current assignee: Aiboke Dynamo Electric Wuxi Co ltd
Priority date: 2019-08-30
Filing date: 2019-08-30
Publication date: 2020-05-12
Anticipated expiration: 2029-08-30

Abstract

The utility model discloses a center goes out water main shaft relates to machine tool equipment technical field, when aiming at solving cutting process through-hole type part, and it is downthehole that partial metal sweeps can be washed away and get into the main shaft, and partial sweeps remains to splash on the jack catch in addition, and the sweeps can't clear away clean problem. The main point of the technical scheme is that the device comprises a main shaft hole arranged in a main shaft along the axial direction of the main shaft and a top rod with one end inserted in the main shaft hole, wherein the main shaft hole and the main shaft are coaxially arranged, a through hole penetrating through two opposite end surfaces of the top rod is arranged in the top rod along the axial direction of the top rod, and the through hole is communicated with the main shaft hole; one end of the ejector rod extending out of the spindle hole is connected with a central water outlet mechanism. During cutting, cutting fluid flows into a main shaft hole of the main shaft through the through hole of the ejector rod and is sprayed out from the center of the three-jaw chuck, the cutter and parts are washed, and the cutting fluid is sprayed out from the main shaft hole, so that scraps generated by hole machining are effectively sprayed out of the hole, and the purpose of cleaning the scraps is achieved.

Description

Central water outlet main shaft

Technical Field

The utility model belongs to the technical field of the technique of machine tool equipment and specifically relates to a central play water main shaft is related to.

Background

The machine tool spindle can drive a workpiece or a cutter on a machine tool to rotate, and the machine tool spindle generally comprises a spindle, a bearing, a transmission part (a gear or a belt wheel) and the like. Most machine tools have a spindle part, the motion precision and the structural rigidity of the spindle part are important factors for determining the processing quality and the cutting efficiency, and indexes for measuring the performance of the spindle part comprise speed adaptability, namely the allowable maximum rotating speed and the rotating speed range, which are mainly determined by the structure and the lubrication of a bearing and heat dissipation conditions.

Most of machine tools clamp workpieces by using three-jaw chucks, the three-jaw chucks need to be fixed on a machine tool spindle, and the rotation of the machine tool spindle drives the workpieces to rotate through the three-jaw chucks for cutting. Parts with high precision requirements and fine surface roughness requirements are generally machined by machining. In the prior art, a large amount of cutting fluid is circularly sprayed on the cutter and a workpiece from the root of the cutter bar in a large amount.

The above prior art solutions have the following drawbacks: when a through hole type part is machined, on one hand, part of metal scraps can be washed into a main shaft hole, and the main shaft is damaged to influence the machining quality and the cutting efficiency; on the other hand, the scraps may partially remain and splash on the jaws, causing a pressure damage phenomenon, thereby affecting the precision and quality of the product, and thus, the improvement is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a center goes out water main shaft, it has the effect of sweeps clean up.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a central water outlet main shaft comprises a main shaft hole arranged in the main shaft along the axial direction of the main shaft and a top rod with one end inserted in the main shaft hole, wherein the main shaft hole is coaxial with the main shaft; one end of the ejector rod extending out of the spindle hole is connected with a central water outlet mechanism.

The utility model discloses further set up to: the central water outlet mechanism comprises a high-pressure water pump arranged on the machine tool and a high-pressure hose connected with the high-pressure water pump, one end, far away from the high-pressure water pump, of the high-pressure hose is connected to the ejector rod, and a fixing assembly used for fixing the high-pressure hose is arranged at one end, extending out of the spindle hole, of the ejector rod.

The utility model discloses further set up to: the fixing assembly comprises a sealing external thread arranged on the circumferential side face of the ejector rod, and one end, far away from the high-pressure hose, of the sealing external thread is inwards sunken to be provided with a locking groove.

The utility model discloses further set up to: the outer side wall of the thread section of the ejector rod is provided with a first annular groove with a semicircular cross section, the inner side wall of the thread end of the high-pressure hose is provided with a second annular groove with a semicircular cross section and corresponding to the first annular groove, and a first water absorption expansion strip is arranged in the first annular groove.

The utility model discloses further set up to: and a water-absorbing expansion strip II is arranged in the annular groove II.

The utility model discloses further set up to: and a sealing assembly is arranged between one end of the ejector rod inserted into the main shaft hole and the inner wall of the main shaft hole.

The utility model discloses further set up to: the sealing assembly comprises a bearing, a sealing ring, a wear-resistant rubber ring and a Y-shaped sealing ring, wherein the bearing is sleeved on the ejector rod, the sealing ring is coaxially sleeved on the outer ring of the bearing, and the wear-resistant rubber ring and the Y-shaped sealing ring are embedded on the circumferential side face of the sealing ring.

To sum up, the utility model discloses a beneficial technological effect does:

1. by the arrangement of the central water outlet mechanism, when cutting machining is carried out, cutting fluid flows into a main shaft hole of the main shaft through the through hole of the ejector rod and is ejected out of the center of the three-jaw chuck to flush a cutter and parts;

2. through the arrangement of the high-pressure hose, the high-pressure cutting fluid is sprayed out, so that the cooling effect is obvious, no dead angle exists in the hole for lubrication, the service life of the cutter is prolonged, and the product quality and the stability are improved;

3. through the setting of the water absorption expansion strip I, the high-pressure hose is in threaded connection with the end part of the ejector rod, if the thread is worn to cause the leakage of the cutting fluid from the threaded connection part, the water absorption expansion strip I can absorb the water expansion in the cutting fluid to block the water leakage gap, the continuous cutting processing is not influenced, and the production efficiency is improved.

Drawings

FIG. 1 is a schematic sectional view showing the connection of a spindle and a ram;

FIG. 2 is a schematic structural view for showing a seal assembly;

FIG. 3 is a schematic view for showing the structure of the central water outlet mechanism;

FIG. 4 is a schematic cross-sectional view for showing a center water discharge mechanism;

FIG. 5 is a schematic sectional view for showing the connection of the jack and the high pressure water pipe;

fig. 6 is an enlarged schematic view of a portion a in fig. 5.

In the figure, 1, main shaft; 11. a spindle hole; 2. a top rod; 21. a through hole; 3. a high pressure hose; 4. sealing the external thread; 41. a locking groove; 5. a first annular groove; 51. a water absorption expansion strip I; 6. a second annular groove; 61. a water absorption expansion strip II; 7. a bearing; 71. an outer ring; 72. an inner ring; 73. a clamp spring I; 74. a second clamp spring; 8. a seal ring; 81. a wear-resistant rubber ring; 82. and a Y-shaped sealing ring.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided in conjunction with the accompanying drawings, so as to enable those skilled in the art to more easily understand the advantages and features of the present invention, and thereby define the scope of the invention more clearly and clearly.

Referring to fig. 1 and 2, for the utility model discloses a central water main shaft, include the main shaft hole 11 of seting up in main shaft 1 along the axial of main shaft 1, main shaft hole 11 and the coaxial setting of main shaft 1. A top rod 2 is inserted in the spindle hole 11, and a through hole 21 penetrating through two opposite end surfaces of the top rod 2 is formed in the top rod 2 along the axial direction of the top rod 2. The length of the mandril 2 is 500mm, so a through hole 21 of 8mm is punched at the center of the mandril 2 by using a deep hole drill. The machine tool spindle can drive a workpiece or a cutter on a machine tool to rotate, and the machine tool spindle generally comprises a spindle 1, a bearing, a transmission part (a gear or a belt wheel) and the like. The cutter produces a large amount of heat and metal cuttings in the high-speed cutting process, and a large amount of heat can not be dissipated in time, so that the machining precision and the durability of the cutter are directly affected, and in order to improve the overall machining performance of a machine tool, the machine tool is required to have the functions of cooling the cutter by large-flow cutting fluid and clearing cuttings. Therefore, one end of the ejector rod 2 extending out of the spindle hole 11 is connected with a central water outlet mechanism, in the embodiment, the cutting fluid adopts water-based cutting fluid, the cutting fluid flows into the spindle hole 11 of the spindle 1 from the central water outlet mechanism through the through hole 21 of the ejector rod 2 and is sprayed out from the center of the three-jaw chuck to flush the cutter and parts, and as the cutting fluid is sprayed out from the spindle hole 11, the scraps generated by hole machining are effectively sprayed out of the hole, so that the metal scraps are cleaner, the machining quality and the cutting efficiency are improved, and the service life of the spindle is prolonged.

Referring to fig. 1 and 2, during the cutting process, the spindle 1 rotates circumferentially, but the ejector rod 2 does not rotate along with the spindle 1, so in order to improve the sealing performance of the contact part of the ejector rod 2 and the spindle 1, a sealing assembly is arranged between one end of the ejector rod 2 inserted into the spindle hole 11 and the inner wall of the spindle hole 11. In this embodiment, the sealing assembly includes a bearing 7 sleeved on the rod 2, and the bearing 7 includes an inner ring 72 and an outer ring 71. The outer ring 71 of the bearing 7 is coaxially sleeved with a sealing ring 8, and a wear-resistant rubber ring 81 and a Y-shaped sealing ring 82 are fixed on the circumferential side surface of the sealing ring 8. A first snap spring 73 is fixed at the joint of the inner ring 72 of the bearing 7 and the ejector rod 2, and a second snap spring 74 is fixed at the joint of the outer ring 71 of the bearing 7 and the sealing ring 8.

Referring to fig. 3 and 4, in order to facilitate the axial movement of the ejector rod 2 along the ejector rod 2, an air cylinder is fixed on the machine tool, a driving end screw of the air cylinder is fixed with a connecting plate two, a connecting plate one is fixed on the connecting plate two through a screw, and the connecting plate one is perpendicular to the connecting plate two. The top surface of the connecting plate I is fixed with the mandril 2. And a linear rail sliding block which is matched with the linear rail of the machine tool in a clamping and embedding manner is also fixed on the bottom surface of the connecting plate II. And starting the cylinder, and enabling the connecting plate II to do linear movement along the linear rail so as to drive the ejector rod 2 to move.

Referring to fig. 4 and 5, the central water outlet mechanism is connected to the end of the push rod 2. The central water outlet mechanism comprises a high-pressure water pump arranged on the machine tool and a high-pressure hose 3 connected with the high-pressure water pump, one end, far away from the high-pressure water pump, of the high-pressure hose 3 is connected to the ejector rod 2, and a fixing assembly used for fixing the high-pressure hose 3 is arranged at one end, extending out of the spindle hole 11, of the ejector rod 2. In this embodiment, the fixing component comprises a sealing external thread 4 arranged on the circumferential side surface of the mandril 2, and the sealing external thread 4 is an Rc1/4 sealing external thread. The end of the sealing external thread 4 far away from the high-pressure hose 3 is processed into a H17X 10L flat position and is inwards sunken to form a locking groove 41 for locking the high-pressure hose 3.

Referring to fig. 5 and 6, the high-pressure hose 3 is screwed to the end of the ram 2, and after long-term use, the thread is worn to cause the water-based cutting fluid to leak from the screwed part. In order to prevent leakage, a first annular groove 5 with a semicircular cross section is formed in the outer side wall of the threaded section of the ejector rod 2, and a second annular groove 6 with a semicircular cross section and corresponding to the first annular groove 5 is formed in the inner side wall of the threaded end of the high-pressure hose 3. The first water-absorbing expansion strip 51 is bonded in the first annular groove 5 through an adhesive, and the second water-absorbing expansion strip 61 is also bonded in the second annular groove 6. An annular channel is formed between the first annular groove 5 and the second corresponding annular groove 6, when the threads at the threaded connection part are worn to cause leakage, the cutting fluid leaks to the connection part and flows into the annular channel, and the first water absorption expansion strip 51 and the second water absorption expansion strip 61 absorb the water in the cutting fluid to expand and block gaps in the annular channel, so that the continuous cutting machining is not influenced. The first water-absorbing expansion strip 51 and the second water-absorbing expansion strip 61 are both made of polymer inorganic water-absorbing expansion materials and rubber, and can absorb water and expand in volume when meeting water, so that gaps are blocked, a waterproof plastic colloid is formed, and the purposes of seepage prevention and leakage prevention are achieved.

The implementation principle of the embodiment is as follows: the high-pressure hose 3 is first screwed to the end of the ram 2.

When cutting machining is carried out, the high-pressure water pump is started, cutting fluid flows out from the high-pressure hose 3, flows into the spindle hole 11 of the spindle 1 through the through hole 21 of the ejector rod 2 and is sprayed out from the center of the three-jaw chuck, the cutting tool and parts are washed, and the cutting fluid is sprayed out from the spindle hole 11, so that scraps generated in hole machining are effectively sprayed out of the hole, metal scraps are cleaned cleanly, the machining quality and the cutting efficiency are improved, and the service life of the spindle is prolonged.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A central water outlet main shaft is characterized in that: the device comprises a main shaft hole (11) formed in a main shaft (1) along the axial direction of the main shaft (1) and a top rod (2) with one end inserted in the main shaft hole (11), wherein the main shaft hole (11) and the main shaft (1) are coaxially arranged, a through hole (21) penetrating through two opposite end surfaces of the top rod (2) is formed in the top rod (2) along the axial direction of the top rod (2), and the through hole (21) is communicated with the main shaft hole (11); one end of the ejector rod (2) extending out of the spindle hole (11) is connected with a central water outlet mechanism.

2. A central water spindle according to claim 1, wherein: the center goes out water mechanism including setting up high pressure water pump on the lathe and high pressure hose (3) be connected with high pressure water pump, the one end that high pressure water pump was kept away from in high pressure hose (3) is connected in ejector pin (2), the one end that main shaft hole (11) are stretched out in ejector pin (2) is provided with the fixed subassembly that is used for fixed high pressure hose (3).

3. A central water spindle according to claim 2, wherein: the fixing assembly comprises a sealing external thread (4) arranged on the circumferential side face of the ejector rod (2), and one end, far away from the high-pressure hose (3), of the sealing external thread (4) is inwards provided with a locking groove (41) in a recessed mode.

4. A central water spindle according to claim 3, wherein: the outer side wall of the thread section of the ejector rod (2) is provided with a first annular groove (5) with a semicircular cross section, the inner side wall of the thread end of the high-pressure hose (3) is provided with a second annular groove (6) with a semicircular cross section and corresponding to the first annular groove (5), and a first water absorption expansion strip (51) is arranged in the first annular groove (5).

5. A central water spindle according to claim 4 in which: and a second water-absorbing expansion strip (61) is arranged in the second annular groove (6).

6. A central water spindle according to claim 1, wherein: and a sealing assembly is arranged between one end of the ejector rod (2) inserted into the spindle hole (11) and the inner wall of the spindle hole (11).

7. A central water spindle according to claim 6 wherein: the sealing assembly comprises a bearing (7) arranged on the ejector rod (2), a sealing ring (8) arranged on an outer ring (71) of the bearing (7) and an abrasion-resistant rubber ring (81) and a Y-shaped sealing ring (82) which are embedded on the circumferential side face of the sealing ring (8) in a sleeved mode, wherein a clamp spring I (73) is arranged at the joint of an inner ring (72) of the bearing (7) and the ejector rod (2), and a clamp spring II (74) is arranged at the joint of the outer ring (71) of the bearing (7) and the sealing ring (8).