High-pressure water passing mechanism for knife rest

Abstract

The high-pressure water passing mechanism for the knife rest comprises a water passing block installed on the knife rest, a first water pipe communicated with a water outlet in the knife rest is arranged in the water passing block, a water outlet pin sliding in the water passing block is arranged in the water passing block, a second water pipe is arranged in the water outlet pin, and the end of the second water pipe is communicated with the end of the first water pipe. An end cover making contact with the right end of the water outlet pin is arranged at the right end of the water passing block, a compression spring is arranged between the end cover and the water outlet pin, and a sealing sleeve is installed in an inner hole in the contact position of the water outlet pin and the cutter head. When the cutterhead is locked, the sealing sleeve is compressed, the water outlet pin is driven to overcome the elasticity of the compression spring to retract, the lower end of the first water pipe is communicated with the right end of the second water pipe, namely, a waterway is communicated, and the sealing effect of high-pressure water is achieved through elastic deformation of the sealing sleeve. The cutterhead is flexibly connected with the water passing device, the sealing performance is kept, the cutterhead is only subjected to the acting force of the rubber sleeve, and the locking precision of the tool rest is prevented from being affected.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a high-pressure water-passing mechanism for a tool holder. Background Art

[0002] The cooling water pressure of general CNC tool holders is low, generally not exceeding 20bar. With the improvement of high-pressure chip breaking technology, more and more users have proposed that tool holders need to meet the requirements of high-pressure water outlet, and the pressure requirement is 70-80bar. The water supply device of general tool holders is mostly an external structure. The three steps of lifting, rotating and locking are required during the rotation of the cutter disc. There is a position change of 4-5mm between the lifting and locking positions. During the rotation process, the water outlet pin will move toward the cutter disc under the action of the spring force and maintain contact with the cutter disc to achieve the effect of sealing the cooling water. When the cooling water pressure is low, it can meet the sealing requirements. When the use pressure is greatly increased, the tool holder body and the cutter disc structure can meet the high-pressure use requirements, but the spring force of the water outlet device is not enough to offset the force of the high-pressure water, resulting in serious water leakage, causing pressure loss and failing to achieve the use effect. Utility Model Content

[0003] The purpose of the utility model is to solve the above-mentioned problem and provide a high-pressure water supply mechanism for a tool holder, which can be used for high-pressure water supply of the tool holder and can also be directly applicable to the current common CNC tool holder low-pressure conversion into high-pressure water supply structure, which is easy to install and adjust, low in cost, and highly practical and popularizable.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A high-pressure water supply mechanism for a tool holder comprises a water supply block installed on the tool holder, a first water pipe connected to a water outlet on the tool holder is arranged in the water supply block, a water outlet pin sliding in the water supply block is arranged in the water supply block, a second water pipe connected to an end of the first water pipe is arranged in the water outlet pin, an end cover in contact with the right end of the water outlet pin is arranged at the right end of the water supply block, a compression spring is arranged between the end cover and the water outlet pin, and a sealing sleeve is installed in the inner hole of the contact part between the water outlet pin and the tool disc.

[0006] Furthermore, a first groove is provided at the left end of the water outlet pin.

[0007] Furthermore, a first sealing ring is provided between the water outlet pin and the inner wall of the water flow block.

[0008] Furthermore, the end cover is connected to the right end of the water flow block via screws, and the end cover is provided with an adjustment screw for adjusting the interval between the end cover and the water flow block.

[0009] Furthermore, a groove is provided on the outer cylindrical surface of the water outlet pin, and a baffle is provided on the left end of the water flow block, and the upper end of the baffle extends into the groove.

[0010] Furthermore, a protrusion that matches with the right end of the inner hole of the water flow block is provided at one end of the inner side of the end cover, and a second sealing ring is provided between the protrusion and the inner wall of the through hole of the water flow block.

[0011] Furthermore, a second groove is provided in the protrusion, and the compression spring is located in the second groove.

[0012] The beneficial effects of the utility model are:

[0013] 1. The utility model includes a water-passing block installed on a tool holder, wherein a first water pipe connected to a water outlet on the tool holder is provided in the water-passing block, a water outlet pin sliding in the water-passing block is provided in the water-passing block, a second water pipe connected to the end of the first water pipe is provided in the water outlet pin, an end cover in contact with the right end of the water outlet pin is provided at the right end of the water-passing block, a compression spring is provided between the end cover and the water outlet pin, and a sealing sleeve is installed in the inner hole of the contact part between the water outlet pin and the tool holder. When the tool holder is locked, the sealing sleeve is compressed to drive the water outlet pin to retract against the elastic force of the compression spring, and the lower end of the first water pipe is connected to the right end of the second water pipe, that is, the water path is connected, and the sealing effect of high-pressure water is achieved through the elastic deformation of the sealing sleeve. The tool holder and the water-passing device are flexibly connected, which not only maintains the sealing performance, but also ensures that the tool holder is only subjected to the force of the rubber sleeve, thereby avoiding affecting the locking accuracy of the tool holder. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic diagram of the working state of the utility model;

[0016] Figure 2 It is a cross-sectional view of the utility model.

[0017] In the figure: tool holder 1, water block 2, water outlet 3, first water pipe 4, water outlet pin 5, second water pipe 6, end cover 7, compression spring 8, sealing sleeve 9, first sealing ring 10, adjusting screw 11, protrusion 12, second sealing ring 13, second groove 14, slot 15, baffle 16. DETAILED DESCRIPTION

[0018] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0019] like Figure 1 and Figure 2 As shown, a high-pressure water-passing mechanism for a tool holder comprises a water-passing block 2 installed on the tool holder 1, the water-passing block 2 is fixed to the tool holder 1 by screws, a first water pipe 4 connected with a water outlet 3 on the tool holder 1 is arranged in the water-passing block 2, a water outlet pin 5 sliding in the water-passing block 2 is arranged in the water-passing block 2, the water outlet pin is arranged in the inner hole of the water-passing block, a second water pipe 6 connected with an end of the first water pipe 4 is arranged in the water outlet pin 5, a vertical portion is arranged at the right end of the second water pipe 6, the upper end of the vertical portion cooperates with the lower end of the first water pipe 4, when the water outlet pin 5 moves to the left, the two are staggered and the water path is disconnected, when the water outlet pin 5 moves to the right, the two are aligned and the water path is connected, an end cover 7 in contact with the right end of the water outlet pin 5 is arranged at the right end of the water-passing block 2, a compression spring 8 is arranged between the end cover 7 and the water outlet pin 5, a sealing sleeve 9 is installed in the inner hole of the contact part between the water outlet pin 5 and the tool disc.

[0020] Since a compression spring 8 is arranged between the end cover 7 and the water outlet pin 5, when the tool holder is lifted, the water outlet pin is pushed to the left to seal the water outlet 3 on the tool holder. When the cutter disc is locked, the sealing sleeve 9 contacts the cutter disc, and the water outlet pin is compressed by the sealing sleeve 9 to move back, thereby connecting the water path. The structure is simple, and the installation and adjustment are convenient. It can be used for high-pressure water flow of the tool holder, and can also be directly applied to the general CNC tool holder low-pressure to high-pressure water flow structure.

[0021] The sealing sleeve 9 is made of a rubber material with good elasticity; the left end of the sealing sleeve 9 extends out of the water outlet pin installation hole by 1-2mm and has a thickness of 3-4mm. When the cutter disc is locked, the sealing sleeve 9 is compressed, driving the water outlet pin 5 to retract against the elastic force of the compression spring 8, and the lower end of the first water pipe 4 is connected to the right end of the second water pipe 6, that is, the water path is connected, and the sealing effect of high-pressure water is achieved through the elastic deformation of the sealing sleeve 9. The cutter disc and the water-passing device are flexibly connected, which not only maintains the sealing performance, but also the cutter disc is only subjected to the force of the rubber sleeve, avoiding affecting the locking accuracy of the tool holder.

[0022] An end cap 7 is installed at the right end of the water outlet pin 5, and the extension length of the water outlet pin 5 can be adjusted forward and backward. Based on the locking position of the cutter disc, it can adapt to different assembly precisions and reduce the installation precision requirements.

[0023] like Figure 2As shown, a first groove is provided at the left end of the water outlet pin 5, and a sealing rubber sleeve 9 is arranged in the first groove.

[0024] like Figure 2 As shown, a first sealing ring 10 is provided between the water outlet pin 5 and the inner wall of the water passing block 2 .

[0025] like Figure 2 As shown, the end cover 7 is connected to the right end of the water block 2 by screws, and the end cover 7 is provided with an adjusting screw 11 for adjusting the interval between the end cover 7 and the water block 2. A number of threaded holes are evenly arranged on the end cover 7. The adjusting screw 11 penetrates into the threaded hole and is threadedly connected with the threaded hole. By rotating the adjusting screw 8, the gap between the end cover 7 and the water block 2 is adjusted, and then the gap between the left end face of the water outlet pin 5 and the back of the cutter disc is adjusted. The gap is 0.2-0.3mm. If the gap is too large, water leakage is likely to occur.

[0026] like Figure 2 As shown, a groove 15 is provided on the outer cylindrical surface of the water outlet pin 5, and a baffle 16 is provided at the left end of the water flow block 2. The upper end of the baffle 16 extends into the groove 15, and the baffle 16 limits the maximum extension length of the water outlet pin to avoid interference.

[0027] A protrusion 12 that cooperates with the right end of the inner hole of the water flow block 2 is provided at one end of the inner side of the end cover 7 . The protrusion 12 is a cylindrical protrusion. A second sealing ring 13 is provided between the protrusion 12 and the inner wall of the through hole of the water flow block 2 .

[0028] like Figure 2 As shown, a second groove 14 is provided in the protrusion 12 , and the compression spring 8 is located in the second groove 14 . The right end of the compression spring 8 contacts the inner wall of the second groove, and the other end of the compression spring 8 contacts the right end of the water outlet pin 5 .

[0029] In the description of the present invention, it should be noted that the terms "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection, it can be a direct connection, it can be an indirect connection through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A high-pressure water supply mechanism for a tool holder, comprising a water supply block (2) mounted on the tool holder (1), wherein the water supply block (2) is provided with a first water pipe (4) connected to a water outlet (3) on the tool holder (1), wherein the water supply block (2) is provided with a water outlet pin (5) sliding in the water supply block (2), wherein the water outlet pin (5) is provided with a second water pipe (6) whose end is connected to the end of the first water pipe (4), characterized in that: The right end of the water flow block (2) is provided with an end cover (7) in contact with the right end of the water outlet pin (5), a compression spring (8) is provided between the end cover (7) and the water outlet pin (5), and a sealing sleeve (9) is installed in the inner hole of the contact portion between the water outlet pin (5) and the cutter disc.

2. A high-pressure water supply mechanism for a tool holder as claimed in claim 1, characterized in that: The left end of the water outlet pin (5) is provided with a first groove.

3. A high-pressure water supply mechanism for a tool holder as claimed in claim 1, characterized in that: A first sealing ring (10) is provided between the water outlet pin (5) and the inner wall of the water flow block (2).

4. A high-pressure water supply mechanism for a tool holder as claimed in claim 1, characterized in that: The end cover (7) is connected to the right end of the water flow block (2) via screws, and the end cover (7) is provided with an adjustment screw (11) for adjusting the interval between the end cover (7) and the water flow block (2).

5. A high-pressure water supply mechanism for a tool holder as claimed in claim 1, characterized in that: A clamping groove (15) is provided on the outer cylindrical surface of the water outlet pin (5), and a baffle (16) is provided at the left end of the water flow block (2), and the upper end of the baffle (16) is deeply inserted into the clamping groove (15).

6. A high-pressure water supply mechanism for a tool holder as claimed in claim 1, characterized in that: One end of the inner side of the end cover (7) is provided with a protrusion (12) that matches the right end of the inner hole of the water flow block (2), and a second sealing ring (13) is provided between the protrusion (12) and the inner wall of the through hole of the water flow block (2).

7. A high-pressure water supply mechanism for a tool holder as claimed in claim 6, characterized in that: A second groove (14) is provided in the protrusion (12), and the compression spring (8) is located in the second groove (14).

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