Center water outlet right-angle head

Abstract

The utility model relates to a center water outlet right-angle head, and belongs to the technical field of machine tool parts, the center water outlet right-angle head comprises an upper base, a lower base, a shaft core, a rotary joint, a pull rod, a pull claw, a water guide pipe, an annular piston, a first reset spring and a second reset spring, the other end of the water guide pipe is fixed to the pull rod, and in the reciprocating motion process of the pull rod, the pull rod drives the pull claw to be switched between the folded state and the unfolded state. According to the center water outlet right-angle head, the rotating connector and the pull rod are communicated through the water guide pipe, in the process that the pull rod reciprocates to control opening and closing of the pull claw, the rotating connector does not need to do reciprocating rectilinear motion along with the pull rod, abrasion of the rotating connector is reduced, and the service life of the rotating connector is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of machine tool parts, and in particular to a center water outlet right-angle head. Background Art

[0002] Center-outlet right-angle heads are often used in pentahedron gantry machining centers. Center-outlet right-angle heads are usually equipped with swivel joints, which are used to transport liquid from the pipeline to the rotating and reciprocating parts. However, the swivel joint will also reciprocate while rotating, which is very easy to cause wear and tear, seriously affecting the service life. Utility Model Content

[0003] Based on this, it is necessary to provide a center water outlet right-angle head to solve the technical problem of easy wear of the rotary joint existing in the prior art.

[0004] To achieve the above purpose, the present application provides a central water outlet right-angle head, the central water outlet right-angle head comprising:

[0005] The upper base is provided with a first cooling water flow channel and a hydraulic oil flow channel;

[0006] A lower base is provided with a first channel;

[0007] The shaft core is rotatably disposed at one end of the first channel, and the shaft core is provided with a second channel;

[0008] A rotary joint is arranged at the other end of the first channel, and the rotary joint is provided with a second cooling water flow channel communicating with the first cooling water flow channel;

[0009] A pull rod is slidably disposed in the second channel, and a third cooling water flow channel is disposed on the pull rod;

[0010] A claw is arranged in the second channel, and the claw is located on the side of the pull rod away from the rotary joint, one end of the pull rod is inserted in the claw, and the third cooling water flow channel is connected to the claw. During the reciprocating movement of the pull rod, the pull rod drives the claw to switch between a closed state and an open state;

[0011] A water pipe, one end of which is slidably inserted into the second cooling water flow channel, and the other end of which is fixed to the pull rod, and the water pipe is provided with a connection connecting the second cooling water flow channel with the third cooling water flow channel and the fourth cooling water flow channel;

[0012] The annular piston is arranged on the side of the pull rod close to the rotary joint. The annular piston is slidably and sealedly inserted in the first channel and sleeved on the rotary joint. The hydraulic oil flow channel drives the annular piston to move in a direction close to the pull rod, so that the annular piston pushes the pull rod to move in a direction close to the pull claw.

[0013] A first return spring, used to make the pull rod always have a tendency to move away from the pull claw; and

[0014] The second return spring is used to ensure that the annular piston always has a tendency to move in a direction away from the pull rod.

[0015] Optionally, the end of the rotary joint protrudes out of the first channel, and a first annular rib is circumferentially arranged on the outer peripheral surface of the rotary joint outside the first channel.

[0016] Optionally, the lower base is provided with a first annular groove adapted to the first annular rib along the circumference of the port of the first channel, and the first annular rib is provided in the first annular groove.

[0017] Optionally, a plurality of bearings are arranged between the shaft core and the lower base.

[0018] Optionally, a plurality of bearings are disposed at both ends of the shaft core.

[0019] Optionally, a second annular rib and a third annular rib are arranged on the inner wall surface of the first channel, the second annular rib is away from the pull rod, and the third annular rib is close to the pull rod, the annular piston is arranged between the second annular rib and the third annular rib, a hydraulic chamber connected to the hydraulic oil flow channel is formed between the annular piston and the second annular rib, and a second return spring is arranged between the annular piston and the third annular rib.

[0020] Optionally, a plurality of second return springs are provided, and the plurality of second return springs are evenly arranged along the circumference of the annular piston.

[0021] Optionally, the second return spring is a rectangular spring.

[0022] Optionally, a fourth annular rib is protrudingly provided on the end face of the annular piston facing the second annular rib, and the second annular rib can be slidably and sealingly inserted into the inner circumferential surface of the second annular rib. The inner circumferential surface of the first channel, the end face of the second annular rib facing the annular piston, the outer circumferential surface of the fourth annular rib and the end face of the annular piston facing the second annular rib form a hydraulic chamber.

[0023] Optionally, a second annular groove is provided on the end surface of the second annular rib facing the annular piston, and the second annular groove is connected to the hydraulic oil flow channel.

[0024] The beneficial effect of the center water outlet right angle head provided by the present application is that compared with the prior art, the center water outlet right angle head of the present application includes an upper base, a lower base, an axis core, a rotary joint, a pull rod, a pull claw, a water pipe, an annular piston, a first return spring and a second return spring. The rotary joint and the pull rod are connected by the water pipe. During the reciprocating motion of the pull rod to control the opening and closing of the pull claw, the rotary joint does not need to follow the pull rod to make reciprocating linear motion, thereby reducing the wear of the rotary joint and increasing the service life of the rotary joint. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the cross-sectional structure of a center water outlet right-angle head provided in an embodiment of the present application.

[0027] Description of reference numerals:

[0028] 1. Upper base;

[0029] 2. Lower base; 210. First channel; 220. First annular groove; 230. Second annular rib; 240. Third annular rib; 250. Second annular groove;

[0030] 3. Axis core; 310. Second channel;

[0031] 4. Rotary joint; 410. First annular rib;

[0032] 5. tie rod; 510. third cooling water channel;

[0033] 6. Pull claw;

[0034] 7. water guide pipe; 710. fourth cooling water flow channel;

[0035] 8. annular piston; 810. fourth annular rib;

[0036] 9. First return spring;

[0037] 10. Second return spring;

[0038] 11. Bearings. DETAILED DESCRIPTION

[0039] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0040] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0042] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0045] The embodiment of the present application provides a central water outlet right angle head, please refer to Figure 1 The central water outlet right-angle head includes an upper base 1, a lower base 2, an axis core 3, a rotary joint 4, a pull rod 5, a pull claw 6, a water guide pipe 7, an annular piston 8, a first return spring 9 and a second return spring 10. The upper base 1 is provided with a first cooling water flow channel and a hydraulic oil flow channel; the lower base 2 is provided with a first channel 210; the axis core 3 is rotatably arranged at one end of the first channel 210, and the axis core 3 is provided with a second channel 310; the rotary joint 4 is arranged at the other end of the first channel 210, and the rotary joint 4 is provided with a second cooling water flow channel connected to the first cooling water flow channel; the pull rod 5 is slidably arranged in the second channel 310, and the pull rod 5 is provided with a third cooling water flow channel 510; the pull claw 6 is arranged in the second channel 310, and the pull claw 6 is on the side of the pull rod 5 away from the rotary joint 4, one end of the pull rod 5 is inserted in the pull claw 6, and the third cooling water flow channel 510 is connected to the pull Claw 6, during the reciprocating movement of the pull rod 5, the pull rod 5 drives the pull claw 6 to switch between a closed state and an open state; one end of the water pipe 7 can be slidably inserted in the second cooling water channel, and the other end of the water pipe 7 is fixed to the pull rod 5, and the water pipe 7 is provided with a connection between the second cooling water channel and the third cooling water channel 510 and the fourth cooling water channel 710; the annular piston 8 is arranged on the side of the pull rod 5 close to the rotary joint 4, the annular piston 8 can be slidably and sealedly inserted in the first channel 210 and sleeved on the rotary joint 4, and the hydraulic oil channel drives the annular piston 8 to move in the direction close to the pull rod 5, so that the annular piston 8 pushes the pull rod 5 to move in the direction close to the pull claw 6; the first return spring 9 is used to make the pull rod 5 always have a tendency to move in the direction away from the pull claw 6; the second return spring 10 is used to make the annular piston 8 always have a tendency to move in the direction away from the pull rod 5.

[0046] It can be understood that the claw 6 is used to clamp the tool, and the cooling water flow channel and the hydraulic oil flow channel are separated from each other. When the pull rod 5 is in a normal state, the claw 6 is in a closed state to clamp the tool. At this time, the hydraulic oil flow channel does not flow hydraulic oil, while the cooling water flow channel flows normally. When the tool needs to be released, the hydraulic oil flows in the hydraulic oil flow channel, which in turn pushes the annular piston 8 to move, and the annular piston 8 pushes the pull rod 5 to move, and the pull rod 5 pushes the claw 6 to the open state, thereby releasing the tool. Among them, while the hydraulic oil flows in the hydraulic oil flow channel, the cooling water flows normally in the cooling water flow channel.

[0047] In other embodiments, the transmission structure between the upper base 1 and the lower base 2 adopts a rectangular spline transmission, the rectangular spline transmission shaft transmits torque to the rectangular spline bevel gear through the spline, the rectangular spline bevel gear is connected to the shaft core 3 through the spline, and finally outputs the torque to the tool. The rectangular spline bevel gear is larger and transmits greater torque. The transmission shaft and the handle shaft are made into one piece, the cost is lower, and the rectangular spline is easier to process than the involute spline.

[0048] In the embodiment of the present application, the center water outlet right-angle head includes an upper base 1, a lower base 2, an axis core 3, a rotary joint 4, a pull rod 5, a pull claw 6, a water pipe 7, an annular piston 8, a first return spring 9 and a second return spring 10. The rotary joint 4 and the pull rod 5 are connected through the water pipe 7. During the reciprocating motion of the pull rod 5 to control the opening and closing of the pull claw 6, the rotary joint 4 does not need to follow the pull rod 5 to make reciprocating linear motion, thereby reducing the wear of the rotary joint 4 and increasing the service life of the rotary joint 4.

[0049] In one embodiment, see Figure 1 The end of the rotary joint 4 protrudes out of the first channel 210 , and a first annular rib 410 is circumferentially arranged on the outer peripheral surface of the rotary joint 4 outside the first channel 210 .

[0050] In this way, the annular rib can limit the movement of the rotary joint 4 along the axial direction of the pull rod 5, thereby preventing the rotary joint 4 from performing reciprocating linear motion.

[0051] In one embodiment, see Figure 1 The lower base 2 is provided with a first annular groove 220 adapted to the first annular rib 410 along the circumference of the port of the first channel 210, and the first annular rib 410 is arranged in the first annular groove 220, thereby reducing the volume of the rotary joint 4 protruding outside the lower base 2 and reducing the overall volume of the central water outlet right-angle head of the present application.

[0052] In one embodiment, see Figure 1A plurality of bearings 11 are arranged between the shaft core 3 and the lower base 2. It can be understood that the claws 6 in the shaft core 3 are used to clamp the tool, and the bearings 11 can improve the rotation effect of the shaft core 3 in the lower base 2.

[0053] In one embodiment, see Figure 1 A plurality of bearings 11 are disposed at both ends of the shaft core 3 to further ensure smooth rotation of the shaft core 3 .

[0054] Furthermore, each bearing 11 is lubricated by oil bath instead of grease, which saves cost; and a sealing structure is provided at the front and rear ends of each group of bearings 11 to prevent the lubricating oil from overflowing.

[0055] In one embodiment, see Figure 1 A second annular rib 230 and a third annular rib 240 are arranged on the inner wall surface of the first channel 210, the second annular rib 230 is away from the pull rod 5, and the third annular rib 240 is close to the pull rod 5, the annular piston 8 is arranged between the second annular rib 230 and the third annular rib 240, a hydraulic cavity connected to the hydraulic oil flow channel is formed between the annular piston 8 and the second annular rib 230, and the second return spring 10 is arranged between the annular piston 8 and the third annular rib 240.

[0056] In one embodiment, see Figure 1 A plurality of second return springs 10 are provided, and the plurality of second return springs 10 are evenly arranged along the circumference of the annular piston 8 to improve the return speed and uniformity of the annular piston 8 .

[0057] In one embodiment, see Figure 1 The second return spring 10 is a rectangular spring, which has the advantages of compact structure, strong bearing capacity and high precision.

[0058] In one embodiment, see Figure 1 A fourth annular rib 810 is convexly provided on the end surface of the annular piston 8 facing the second annular rib 230, and the second annular rib 230 is slidably and sealingly inserted on the inner circumference of the second annular rib 230. The inner circumference of the first channel 210, the end surface of the second annular rib 230 facing the annular piston 8, the outer circumference of the fourth annular rib 810 and the end surface of the annular piston 8 facing the second annular rib 230 form a hydraulic chamber.

[0059] Alternatively, in other embodiments, the depth of the second annular groove 250 described below is greater, and the annular piston 8 slides in the second annular groove 250, so that the second annular groove 250 and the annular piston 8 enclose a hydraulic chamber.

[0060] In one embodiment, see Figure 1A second annular groove 250 is provided on the end surface of the second annular rib 230 facing the annular piston 8. The second annular groove 250 is connected to the hydraulic oil flow channel. Hydraulic oil is reserved in the second annular groove 250 to reduce the initial difficulty of the hydraulic oil pushing the annular piston 8 to move.

[0061] It is understandable that sealing rings are used to seal between the shaft core 3 and the pull rod 5, between the lower base 2 and the rotary joint 4, and between the lower base 2 and the annular piston 8. Similarly, sealing rings are also used to seal between other parts that need to be sealed, which is not limited here.

[0062] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0063] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A center water outlet right angle head, characterized in that: include: The upper base is provided with a first cooling water flow channel and a hydraulic oil flow channel; A lower base is provided with a first channel; An axis core is rotatably disposed at one end of the first channel, and the axis core is provided with a second channel; A rotary joint, disposed at the other end of the first channel, the rotary joint being provided with a second cooling water flow channel communicating with the first cooling water flow channel; a pull rod slidably disposed in the second channel, the pull rod being provided with a third cooling water flow channel; A claw is disposed in the second channel, and the claw is located on the side of the pull rod away from the rotary joint, one end of the pull rod is inserted in the claw, and the third cooling water channel is connected to the claw. During the reciprocating movement of the pull rod, the pull rod drives the claw to switch between a closed state and an open state; A water pipe, one end of which is slidably inserted into the second cooling water flow channel, the other end of which is fixed to the pull rod, and the water pipe is provided with a connection connecting the second cooling water flow channel with the third cooling water flow channel and the fourth cooling water flow channel; An annular piston is arranged on a side of the pull rod close to the rotary joint, the annular piston is slidably and sealedly inserted in the first channel and sleeved on the rotary joint, and the hydraulic oil flow channel drives the annular piston to move in a direction close to the pull rod, so that the annular piston pushes the pull rod to move in a direction close to the pull claw; a first return spring, used to ensure that the pull rod always has a tendency to move away from the pull claw; as well as The second return spring is used to ensure that the annular piston always has a tendency to move in a direction away from the pull rod.

2. A center water outlet right angle head according to claim 1, characterized in that: The end of the rotary joint protrudes out of the first channel, and a first annular rib is circumferentially arranged on the outer peripheral surface of the rotary joint outside the first channel.

3. A center water outlet right angle head according to claim 2, characterized in that: The lower base is provided with a first annular groove adapted to the first annular rib along the circumference of the port of the first channel, and the first annular rib is provided in the first annular groove.

4. A center water outlet right angle head according to claim 1, characterized in that: A plurality of bearings are arranged between the shaft core and the lower base.

5. A center water outlet right angle head according to claim 4, characterized in that: The plurality of bearings are disposed at both ends of the shaft core.

6. A center water outlet right angle head according to claim 1, characterized in that: A second annular rib and a third annular rib are arranged on the inner wall surface of the first channel, the second annular rib is away from the pull rod, and the third annular rib is close to the pull rod, the annular piston is arranged between the second annular rib and the third annular rib, a hydraulic cavity connected to the hydraulic oil flow channel is formed between the annular piston and the second annular rib, and the second return spring is arranged between the annular piston and the third annular rib.

7. A center water outlet right angle head according to claim 6, characterized in that: A plurality of the second return springs are provided, and the plurality of the second return springs are evenly arranged along the circumference of the annular piston.

8. A center water outlet right angle head according to claim 6, characterized in that: The second return spring is a rectangular spring.

9. A center-outlet right-angle head according to claim 6, characterized in that: A fourth annular rib is protrudingly provided on the end face of the annular piston facing the second annular rib, and the second annular rib is slidably and sealingly inserted on the inner circumferential surface of the second annular rib. The inner circumferential surface of the first channel, the end face of the second annular rib facing the annular piston, the outer circumferential surface of the fourth annular rib and the end face of the annular piston facing the second annular rib together form the hydraulic chamber.

10. A center water outlet right angle head according to claim 9, characterized in that: A second annular groove is provided on the end surface of the second annular rib facing the annular piston, and the second annular groove is connected to the hydraulic oil flow channel.

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