Tool turret tool cooling water supply valve group

Abstract

The utility model provides a turret cutter cooling water supply valve group which comprises a valve body, a piston rod and a sealing ring, and a sliding cavity and a liquid inlet channel are formed in the valve body. The piston rod is in sliding fit in the sliding cavity, and a liquid outlet runner with one open end is formed in the piston rod; a cylindrical protrusion is arranged at the tail of the piston rod, a first liquid inlet hole communicated with the liquid outlet flow channel is formed in the side wall of the cylindrical protrusion, and the end of the cylindrical protrusion is a working face and used for sealing and generating axial thrust. The sealing ring is arranged between the sliding cavity and the liquid inlet channel, second liquid inlet holes communicating with the liquid inlet area and the liquid inlet channel are formed in the two ends of the sealing ring in a penetrating mode, and the edge of each second liquid inlet hole is provided with a main sealing face capable of being attached to the working face to form sealing. The tool turret tool cooling water supply valve set is compact in structure, convenient to install, fast in response, capable of greatly improving the reliability of water supply to a tool turret, stable and reliable in use and long in service life.

Description

Technical Field

[0001] The utility model relates to a valve, in particular to a turret tool cooling water supply valve group. Background Art

[0002] The hydraulic turret is an important accessory for high-precision CNC machine tools. It is generally loaded with various types of tools such as turning, milling, and drilling. The rapid switching of different tools is completed by rotating the tool disc. When the turret clamps the tool to cut the workpiece, the temperature of the tool and the turret will rise, and a cooling mechanism is required to cool them down to reduce the temperature of the tool and the turret.

[0003] In the prior art, the cooling device of the turret includes a cutter disc, a turret housing and a tool cooling water supply assembly. The cutter disc rotates relative to the turret housing. The cutter disc is provided with a cooling water channel. The outlet of the cooling water channel faces the processing tool. A cutter disc sealing ring is fixedly provided on the side of the cutter disc close to the turret housing. A water inlet channel for conveying cooling water is provided in the turret housing. A brass water pipe is provided in the tool cooling water supply assembly. The brass water pipe is used to connect the water inlet channel with the cooling water channel, and a sealing ring at the end of the brass water pipe realizes sealing with the cutter disc sealing ring.

[0004] Existing turret cooling has the following disadvantages:

[0005] 1. The problem of contact wear between the cutter disc and the tool cooling water supply assembly. The turrets on the market now all have contact seals. The general design scheme is to design a spring in the tool cooling water supply assembly. Through the pressure of the spring, the brass water pipe in the middle of the tool cooling water supply assembly is pressed, and the spring pressure always presses the water pipe to the cutter disc to tightly connect. When the cutter disc performs the tool change action, the spring pressure always forces the water pipe of the tool cooling water supply assembly to be tightly pressed on the disc. The cutter disc rotates when changing the tool, which will cause the seal ring at the end of the brass water pipe to wear. If this continues for a long time, the seal ring at the end of the brass water pipe will need to be replaced every few months, otherwise it will leak.

[0006] 2. During the operation of the turret, the water inlet channel of the cutter disc is usually perpendicular to the brass water pipe. When the water inlet pressure is high or the spring pressure is insufficient, the brass water pipe will rotate in a circle, causing the sealing ring at the end of the brass water pipe to rub against the end face of the rotating sealing disk, resulting in a mismatch with the cutter disc, causing the cooling water to leak out and cause insufficient pressure, making it difficult to cool the cutter disc and the tool.

[0007] 3. Since the turrets on the market are basically designed with springs, if the turret pressure is too low, it is easy to cause insufficient cooling of the tool, which will aggravate tool wear. If the pressure is too high, it will offset the pressure given to the water pipe contact surface by the spring, resulting in serious pressure relief, insufficient sealing, and serious water leakage.

[0008] 4. Since the turrets on the market are basically designed with springs, they cannot use high-pressure water supply, such as the 50-70Kg high-pressure water supply required by internal energy tools and drills. Because the high pressure generated by the high-pressure pump exceeds the sealing pressure given by the spring, it will directly cause the water pipe and the cutter disc to separate directly under high pressure, causing serious water leakage, and it is impossible to use internal cooling tools and drills that require high-pressure water supply. Utility Model Content

[0009] Technical issues to be solved

[0010] The technical problem to be solved by the utility model is to provide a turret tool cooling water supply valve group which has a compact structure, can be separated from the turret, has no wear, can generate high-pressure water supply and has good cooling effect.

[0011] Technical solutions to the problem

[0012] The utility model provides a turret tool cooling water supply valve group, which includes:

[0013] A valve body 1, wherein a sliding cavity 10a and a liquid inlet channel 10b arranged at the tail of the sliding cavity 10a are formed in the valve body 1;

[0014] The piston rod 3 is slidably mounted in the sliding cavity 10a, the head of the piston rod 3 extends to the outside of the valve body 1, and a liquid outlet channel 30 with an open end is formed in the piston rod 3; a cylindrical protrusion 32 is provided at the tail of the piston rod 3, a gap is provided between the outer wall of the cylindrical protrusion 32 and the inner wall of the sliding cavity 10a and a liquid inlet area 100 is formed, and a first liquid inlet hole 301 connected to the liquid outlet channel 30 is opened on the side wall of the cylindrical protrusion 32, and the end of the cylindrical protrusion 32 is a working surface 32a and is used for sealing and generating axial thrust;

[0015] The sealing ring 5 is arranged between the sliding cavity 10a and the liquid inlet channel 10b. The two ends of the sealing ring 5 are penetrated by second liquid inlet holes 50 connecting the liquid inlet area 100 and the liquid inlet channel 10b. The edge of the second liquid inlet hole 50 is provided with a main sealing surface 5a that can fit with the working surface and form a seal.

[0016] Furthermore, a chamfer 321 is provided at the end of the cylindrical protrusion 32, and a secondary sealing surface 502 is provided on the sealing ring 5, which can fit into the chamfer 321 and achieve sealing.

[0017] Furthermore, an annular groove 503 is formed on the secondary sealing surface 502, and the secondary sealing surface 502 is divided into a plurality of sub-sealing surfaces.

[0018] Furthermore, a stepped hole is formed in the valve body 1, a front plug 2 is provided at the large hole end of the stepped hole to form the sliding cavity 10a, and oil ports 101 and 102 are provided at both ends of the sliding cavity 10a; the small hole of the stepped hole serves as the liquid inlet channel 10b, and the sealing ring 5 is installed on the step surface of the stepped hole.

[0019] Furthermore, the oil port includes a first oil port 101 for driving the piston rod 3 forward and a second oil port 102 for driving the piston rod 3 backward, the first oil port 101 is connected to the hydraulic locking pipeline of the turret, and the second oil port 102 is connected to the hydraulic separation pipeline of the turret.

[0020] Furthermore, the end of the piston rod 3 is threadedly connected to a sealing seat 4 for connecting to a cooling pipeline of the turret, the end of the sealing seat 4 forms a sealing surface, and both ends of the sealing seat 4 are penetrated by through holes for liquid discharge.

[0021] Furthermore, the piston rod 3 includes a first rod body 311, a second rod body 312 and a third rod body 313 connected in sequence, the diameter of the second rod body 312 is larger than the diameters of the first rod body 311 and the third rod body 313 and serves as a piston part, the side walls of the second rod body and the third rod body are provided with sealing rings, and the cylindrical protrusion is arranged at the end of the third rod body.

[0022] Furthermore, there are multiple first liquid inlet holes 301 that are evenly distributed around the circumference.

[0023] Beneficial Effects

[0024] The utility model discloses a turret tool cooling water supply valve group, which adopts modular design, has high integration, is easy to disassemble and assemble, and integrates hydraulic pressure, cooling water, etc. at the same time; adopts a separation and locking linkage design with the turret to achieve zero wear of the separation contact water pipe surface and the contact sealing surface of the cutter disc; shares a set of hydraulic pipelines with the turret, and the pipelines are simple and do not increase additional use costs; adopts hydraulic design to solve the problems of spring rust or insufficient spring pressure; can carry out high-pressure water supply, solves the problems that traditional mechanisms cannot use high-pressure water supply and cannot use internal cooling tool drill bits; when using high-pressure water supply, it can make the piston rod have a tendency to move forward, which has The pressurization effect makes the seal with the contact surface of the cutter disc tighter; when the tool change action is executed, the valve group is separated from the cutter disc, and the valve group will automatically close the high-pressure water supply at the same time without the need for host computer control; no matter high-pressure or low-pressure water supply, real-time direct water supply is achieved after the tool change is completed, without waiting for the water supply equipment to start and then supply water, and the liquid supply rate is fast, which greatly saves time, reduces tool wear, and also reduces the extension of processing time caused by waiting for water supply; the utility model turret tool cooling water supply valve group has a compact structure, is easy to install, and responds quickly, can greatly improve the reliability of the water supply to the turret, and is stable and reliable to use and has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural schematic diagram of the turret tool cooling water supply valve group of the utility model;

[0026] Figure 2 This is a schematic structural diagram of the turret tool cooling water supply valve group of the utility model from another angle;

[0027] Figure 3 It is a cross-sectional view of the turret tool cooling water supply valve group of the utility model;

[0028] Figure 4 Another planar cross-sectional view of the turret tool cooling water supply valve assembly of the utility model;

[0029] Figure 5 for Figure 3 Enlarged view of part A in the middle;

[0030] Figure 6 This is a structural schematic diagram of the piston rod of the turret tool cooling water supply valve group of the utility model;

[0031] Figure 7 This is a structural schematic diagram of the sealing ring of the turret tool cooling water supply valve group of the utility model;

[0032] Figure 8 It is a cross-sectional view of the sealing ring of the turret tool cooling water supply valve group of the utility model;

[0033] Fig. 9 This is a schematic diagram of the water supply status of the turret tool cooling water supply valve group of the utility model. DETAILED DESCRIPTION

[0034] The following is a detailed description of the embodiments of the present utility model in conjunction with the accompanying drawings.

[0035] See also Figure 1-Figure 9 The utility model provides a turret tool cooling water supply valve group, which is used for high-pressure water supply cooling of tools on the turret, and includes a valve body 1, a piston rod 3 and a sealing ring 5.

[0036] The valve body 1 is used as a support and mounting carrier for installing the piston rod 3. The valve body is a rectangular parallelepiped as a whole, and a mounting hole is provided on the valve body 1 for installing it on the turret frame; a sliding cavity 10a and a liquid inlet channel 10b are formed in the valve body 1, and the liquid inlet channel 10b is arranged at the tail end of the sliding cavity 10a; in the present application, a stepped hole is formed in the valve body 1, and a front plug 2 is provided at the end of the large hole of the stepped hole to form a sliding cavity 10a, and oil ports are provided at both ends of the sliding cavity 10a for driving the axial movement of the piston rod; the small hole in the stepped hole serves as the liquid inlet channel 10b. In order to reduce the difficulty of processing, the stepped hole in this embodiment is a through hole, and a rear plug 6 is provided at the end of the small hole of the stepped hole, and the sealing ring 5 is installed on the step surface of the stepped hole, and a liquid inlet 103 connected to the liquid inlet channel 10b is provided on the side wall of the valve body.

[0037] The piston rod 3 is slidably fitted in the sliding cavity 10a, and axial sliding is achieved through the two oil ports for oil inlet and outlet. The head of the piston rod 3 passes through the front plug and extends to the outside of the valve body 1, which serves as the output end. A liquid outlet channel 30 is formed in the piston rod 3, and the front end of the liquid outlet channel 30 is open (open) for discharging coolant; a cylindrical protrusion 32 is provided at the tail of the piston rod 3, and the cylindrical protrusion 32 is coaxially arranged with the piston rod, and there is a gap between its outer wall and the inner wall of the sliding cavity 10a, and a liquid inlet area 100 is formed. At the same time, a first liquid inlet hole 301 is opened on the side wall of the cylindrical protrusion 32, and the first liquid inlet hole 301 is connected to the liquid outlet channel 30. There are multiple liquid inlet holes 301 that are evenly distributed circumferentially. The coolant in the liquid inlet area 100 can enter the liquid outlet channel 30 through the first liquid inlet hole 301 and be output from its front end to the cooling pipeline of the tool of the turret to achieve cooling of the tool; the end of the cylindrical protrusion 32 is a working surface 32a. In this embodiment, the working surface is a plane that is perpendicular to the axis of the piston rod and is used for sealing and generating axial thrust. When used as a seal, it blocks the connection between the liquid inlet chamber 100 and the liquid inlet passage; when supplying liquid, the high-pressure coolant can generate thrust on the working surface, and the piston rod has a tendency to move forward, so that its end is pressed tightly against the contact surface of the turret to improve the sealing performance.

[0038] In the present application, the piston rod 3 includes a first rod body 311, a second rod body 312 and a third rod body 313 connected in sequence from front to back, wherein the diameter of the second rod body 312 is greater than the diameter of the first rod body 311 and the third rod body 313, and it serves as a piston part. Preferably, the diameters of the second rod body 312, the third rod body and the first rod body decrease in sequence. At the same time, sealing rings are provided on the side walls of the second rod body 312 and the third rod body 313, which are in close contact with the inner wall of the sliding cavity to achieve sealing. The cylindrical protrusion 32 is provided at the end of the third rod body. At the same time, a wear-resistant belt is also provided on the side wall of the piston part to improve the operating reliability, stability and service life; accordingly, the sliding cavity includes a first sliding cavity and a second sliding cavity, the outer wall of the second rod body is in close contact with the inner wall of the first sliding cavity, the outer wall of the third rod body is in close contact with the inner wall of the second sliding cavity, and the oil port is arranged at both ends of the first sliding cavity. Specifically, the oil port includes a first oil port 101 and a second oil port 102. The first oil port 101 is arranged at the rear end of the first sliding cavity for driving the piston rod 3 forward, and the second oil port 102 is arranged at the front end of the first sliding cavity for driving the piston rod 3 backward. At the same time, the first oil port 101 is connected to the hydraulic locking pipeline of the turret, and the second oil port 102 is connected to the hydraulic separation pipeline of the turret, which can realize linkage.

[0039] The sealing ring 5 is in an annular shape as a whole and is arranged between the sliding cavity 10a and the liquid inlet channel 10b. In the present embodiment, it is arranged on the step surface between the sliding cavity 10a and the liquid inlet channel 10b and can withstand the axial force. A second liquid inlet hole 50 is passed through the center of both ends of the sealing ring 5 and is used to connect the liquid inlet area 100 and the liquid inlet channel 10b. At the same time, a main sealing surface 5a is provided at the edge of the second liquid inlet hole 50. The main sealing surface 5a is in an annular shape and protrudes toward the columnar shape. It can fit with the working surface to achieve sealing.

[0040] In this embodiment, a chamfer 321 is provided at the end of the cylindrical protrusion 32, and correspondingly, a secondary sealing surface 502 is provided on the sealing ring 5. The secondary sealing surface 502 is a conical structure, and its taper is the same as that of the chamfer. It can fit into the chamfer 321 to further improve the sealing performance; an annular groove 503 is opened on the secondary sealing surface 502, and the annular groove divides the secondary sealing surface 502 into a plurality of sub-sealing surfaces, which can form multi-pass seals and greatly improve the sealing performance.

[0041] A sealing seat 4 is provided at the end of the piston rod 3. The sealing seat 4 is cylindrical and is connected to the piston rod 3 by threads. A sealing surface is formed at the end of the sealing seat 4 for fitting in contact with the turret and connected to the cooling pipeline. Through holes are penetrated at both ends of the sealing seat 4 for outputting the coolant in the liquid outlet channel 30 to the cooling pipeline of the turret, thereby cooling the tool of the turret.

[0042] The working principle of the utility model turret tool cooling water supply valve group is described below:

[0043] Separation locking:

[0044] The oil circuit in this application is connected in parallel with the locking oil circuit of the turret, and drives the piston rod to move forward (closely connected with the turret sealing surface) or backward (separated from the close contact with the turret sealing surface, and at the same time, the working surface at its rear end contacts the main sealing surface to achieve sealing and block water ingress) through the oil port on the valve body.

[0045] Coolant supply:

[0046] A liquid inlet is provided on the valve body, which is connected to the turret tool cooling water pipeline so that the tool cooling water can enter the valve body. A piston rod is slidably mounted in the valve body, and a liquid outlet channel is opened in the center of the piston rod. A first liquid inlet hole is evenly distributed circumferentially on the cylindrical protrusion at the rear end of the piston rod, which can guide the coolant entering the valve body. A sealing seat is provided on the end of the piston rod, which is connected to the piston rod through a thread. The threaded connection can realize high-pressure delivery of the coolant. If the threaded connection is not used, there is a risk of being washed away by high-pressure water under the action of high pressure. The coolant entering the center of the piston rod is closely contacted with the cutter disc through the sealing seat, and is transmitted into the tool cooling water pipeline designed in the cutter disc, thereby completing the transmission of the tool cooling water.

[0047] At the same time, when the high-pressure coolant enters the liquid inlet area through the liquid inlet channel, since the rear end of the piston rod is provided with a working surface, and the first liquid inlet hole provided on the cylindrical protrusion is smaller, it is blocked by the sealing ring (this sealing ring is a special sealing ring for high pressure) in the forward direction. The greater the water pressure of the high-pressure cooling water, the greater the sealing pressure and the stronger the sealing ability. It will accumulate this time, while the high-pressure pump has been maintaining the high-pressure water supply to the vehicle, which will apply the pressure of the high-pressure water to the piston rod, causing the piston rod to have a forward movement tendency, thereby playing a pressurizing effect, and thereby enhancing the sealing effect of the sealing seat and the end face of the cutter disc.

[0048] The utility model turret tool cooling water supply valve group has the following advantages:

[0049] It adopts modular design, with high integration and convenient disassembly and assembly. It also integrates hydraulic pressure, cooling water, etc. It adopts a linkage design of separation and locking with the turret to achieve zero wear on the separation contact water pipe surface and the contact sealing surface of the cutter disc. It shares a set of hydraulic pipelines with the turret, which is simple and does not increase additional use costs. It adopts hydraulic design to solve problems such as spring rust or insufficient spring pressure. It can supply high pressure water, which solves the problems that traditional mechanisms cannot use high pressure water supply and cannot use internal cooling tools and drill bits. When using high pressure water supply, it can make the piston rod have a tendency to move forward, which has a pressurizing effect, making it compatible with The contact surface of the cutter disc is more tightly sealed; when the tool change action is executed, the valve group is separated from the cutter disc, and the valve group will automatically shut down the high-pressure water supply at the same time without the need for host computer control; no matter high-pressure or low-pressure water supply, real-time direct water supply is achieved after the tool change is completed, without waiting for the water supply equipment to start and then supply water, and the liquid supply rate is fast, which greatly saves time, reduces tool wear, and also reduces the extension of processing time caused by waiting for water supply; the utility model turret tool cooling water supply valve group has a compact structure, is easy to install, and responds quickly, can greatly improve the reliability of the water supply to the turret, and is stable and reliable to use and has a long service life.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A turret tool cooling water supply valve group, characterized in that: include: A valve body, wherein a sliding cavity and a liquid inlet channel arranged at the tail of the sliding cavity are formed in the valve body; A piston rod is slidably mounted in the sliding cavity, the head of the piston rod extends outside the valve body, and a liquid outlet channel with an open end is formed in the piston rod; a cylindrical protrusion is provided at the tail of the piston rod, a gap is provided between the outer wall of the cylindrical protrusion and the inner wall of the sliding cavity to form a liquid inlet area, a first liquid inlet hole connected to the liquid outlet channel is provided on the side wall of the cylindrical protrusion, and the end of the cylindrical protrusion is a working surface and is used for sealing and generating axial thrust; A sealing ring is arranged between the sliding cavity and the liquid inlet channel, and both ends of the sealing ring are penetrated by second liquid inlet holes connecting the liquid inlet area and the liquid inlet channel, and the edge of the second liquid inlet hole is provided with a main sealing surface that can fit with the working surface and achieve sealing.

2. The turret tool cooling water supply valve assembly according to claim 1, characterized in that: The end of the cylindrical protrusion is provided with a chamfer, and the sealing ring is provided with a secondary sealing surface which can fit the chamfer and achieve sealing.

3. The turret tool cooling water supply valve assembly according to claim 2, characterized in that: An annular groove is provided on the secondary sealing surface, and the secondary sealing surface is divided into a plurality of sub-sealing surfaces.

4. The turret tool cooling water supply valve assembly according to claim 1, characterized in that: A stepped hole is formed in the valve body, a front plug is provided at the end of the large hole of the stepped hole to form the sliding cavity, and oil ports are provided at both ends of the sliding cavity; the small hole of the stepped hole serves as the liquid inlet channel, and the sealing ring is installed on the step surface of the stepped hole.

5. The turret tool cooling water supply valve assembly according to claim 4, characterized in that: The oil port includes a first oil port for driving the piston rod forward and a second oil port for driving the piston rod backward. The first oil port is connected to the hydraulic locking pipeline of the turret, and the second oil port is connected to the hydraulic separation pipeline of the turret.

6. The turret tool cooling water supply valve assembly according to claim 1, characterized in that: The end of the piston rod is threadedly connected with a sealing seat for connecting to the cooling pipeline of the turret, the end of the sealing seat serves as a sealing surface, and both ends of the sealing seat are penetrated by through holes for liquid discharge.

7. The turret tool cooling water supply valve assembly according to claim 1, characterized in that: The piston rod includes a first rod body, a second rod body and a third rod body connected in sequence. The diameter of the second rod body is larger than that of the first rod body and the third rod body and serves as a piston part. The side walls of the second rod body and the third rod body are provided with sealing rings, and the cylindrical protrusion is arranged at the end of the third rod body.

8. The turret tool cooling water supply valve assembly according to claim 1, characterized in that: The first liquid inlet holes are multiple and evenly distributed in the circumferential direction.

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