A self-pressure angle head

Abstract

The present invention discloses a self-pressure-supply angle head, which relates to the field of mechanical processing technology and comprises a tool handle, a worm is fixedly connected to the bottom end of the tool handle, a worm sleeve is provided on the outer wall of the worm, an outer shell is provided on the outer side of the bottom of the tool handle, a bearing is provided inside the outer shell, a fixing device is fixedly connected to the outer wall of the outer shell, a high-pressure gas storage shell is fixedly connected to the bottom end of the worm sleeve, and a gas transmission device is fixedly connected to the bottom of the high-pressure gas storage shell. The self-pressure-supply angle head first generates high-pressure gas by rotating the worm, transmits energy through the gas, and then converts it into cutting kinetic energy by a pneumatic motor. The gas transmission pipeline can be designed to be very small, and the pneumatic motor has a simple design structure and can be designed to be very small. The two can be coordinated to design an ultra-small angle processing head, which is convenient for the miniaturization design of the angle head.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, in particular to a self-pressure-supplying angle head. Background Art

[0002] In the field of CNC machining, 90% of machining centers are three-axis and can only process horizontal surfaces, but cannot process the sides of parts. Small parts are processed by flipping the workpiece, clamping it twice, or flipping it over and clamping it multiple times. Since each clamping has a certain error, the overall machining accuracy of the parts is reduced and cannot meet the requirements of the design drawings. In addition, multiple clamping requires manpower and the clamping time increases, resulting in reduced machining efficiency and increased costs. In particular, large parts cannot be flipped for machining. The solution to these problems must use angle head machining, because the angle head can transform the vertical downward machining of the three-axis machine tool into 90-degree horizontal machining, and can also rotate 360 ​​degrees around the vertical axis and process at any angle, so that the workpiece can be clamped once, the vertical and horizontal surfaces can be machined, and all sides can be machined at the same time, which improves machining efficiency, ensures part machining accuracy, and effectively solves the problem that the sides of large parts cannot be machined.

[0003] For example, the angle head disclosed in the publication number: CN205218168U includes a tool handle, an angle head transmission shaft and a mandrel arbor, one end of the tool handle is installed at the bottom end of the machine tool spindle and the other end is installed with an active bevel gear, the angle head transmission shaft is located below the tool handle and is installed with a driven bevel gear, and the active bevel gear and the driven bevel gear rotate in coordination; a clamping nut is fixed at one end of the angle head transmission shaft; a through hole is provided along the axial direction of the angle head transmission shaft; the mandrel arbor is passed through the through hole, one end of the mandrel arbor is located in the through hole and is fixed with a tightening bolt and a clamping nut matched with the tightening bolt, the side wall of the mandrel arbor is interference-fitted with the inner wall of the angle head transmission shaft, the other end of the mandrel arbor extends out of the main shaft of the angle head transmission shaft and is connected with a saw blade milling cutter, and the axis of the mandrel arbor is arranged perpendicular to the axis of the tool handle. The present invention meets the milling force requirements of the saw blade milling cutter while ensuring accuracy. The outer wall of the mandrel guide rod is closely matched with the inner wall of the angle head transmission shaft to obtain a sufficiently large contact friction force to ensure a smooth milling process.

[0004] However, the traditional angle heads of this angle head are all mechanically driven, such as Figure 7 As shown, the kinetic energy is provided by the tool handle 1, which drives the rotation of the vertical shaft 2. The vertical shaft 2 drives the second bevel gear 4 of the transverse shaft 5 to rotate through the first bevel gear 3 on the shaft to achieve a 90-degree rotation angle. The second bevel gear 4 drives the transverse shaft 5 to rotate. The transverse shaft 5 is equipped with a CNC tool 6 to achieve rotation processing.

[0005] However, the traditional angle head that relies on mechanical transmission has the following disadvantages: First, due to the rotational friction transmission between the shaft, bearings, and gears, a large amount of heat energy will be generated during the transmission process, and the temperature of the angle head will rise. In addition, due to the certain tension of the spindle of the CNC machine tool, the design weight and volume of the angle head are limited. At present, the old angle head has no cooling device, so its speed is strictly limited. The normal speed is within 4000 rpm. If the speed is increased, it will cause the bearings and gears to sinter and lock, and the equipment will be destroyed. Second, due to mechanical transmission, the shaft, bearings, and gears have a certain volume, strength, and weight, which makes it difficult to design miniaturization. The transmission distance is short, and it is difficult to achieve miniaturized design and production. In order to solve the above problems, a self-pressure angle head is proposed. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a self-pressure-supply angle head.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A self-pressure-supplied angle head comprises a tool handle, a worm is fixedly connected to the bottom end of the tool handle, a worm sleeve is provided on the outer wall of the worm, an outer shell is provided on the outer side of the bottom of the tool handle, a bearing is provided inside the outer shell, a fixing device is fixedly connected to the outer wall of the outer shell, a high-pressure gas storage shell is fixedly connected to the bottom end of the worm sleeve, a gas transmission device is fixedly connected to the bottom of the high-pressure gas storage shell, an air motor is fixedly connected to the bottom end of the gas transmission device, a tool is fixedly connected to the output end of the air motor, an exhaust muffler is fixedly installed on the outer wall of the worm sleeve, and a waterproof fixing shell is provided on the outer wall of the tool handle.

[0009] Preferably, the inner wall of the bearing is fixedly sleeved with the outer wall of the bottom of the knife handle, and the outer wall of the bearing is fixedly connected to the inner wall of the shell. The rotation of the knife handle can drive the steel balls in the bearing to rotate. The rotation of the steel balls in the bearing generates a large amount of heat. At the same time, external gas flows through the gaps between the steel balls in the bearing, taking away the heat generated by the rotational friction of the bearing, thereby cooling the bearing and increasing the gas temperature.

[0010] Preferably, the outer wall of the shell is threadedly connected with a plurality of locking screws, and the angle of the angle head can be adjusted by loosening the locking screws, and the locking screws are fixed to control the processing direction.

[0011] Preferably, a gas storage chamber is provided inside the high-pressure gas storage shell, the output end of the worm is connected to the input end of the high-pressure gas storage shell, and the gas storage chamber is used to store high-pressure gas.

[0012] Preferably, the gas transmission device includes a first gas transmission pipeline and a second gas transmission pipeline, the output end of the high-pressure gas storage shell is connected to the output end of the first gas transmission pipeline, the output end of the first gas transmission pipeline is connected to the input end of the pneumatic motor, and the gas output end of the pneumatic motor is connected to the input end of the second gas transmission pipeline.

[0013] Preferably, an exhaust port is provided at the output end of the exhaust muffler, an exhaust hole is opened inside the worm gear housing and the high-pressure gas storage shell, the output end of the second gas transmission pipeline is connected to the input end of the exhaust hole, and the output end of the exhaust hole is connected to the input end of the exhaust muffler.

[0014] Preferably, an air inlet is provided at the bottom of the waterproof fixed shell, and the air inlet is located above the bearing. Through the design of the waterproof fixed shell, the air inlet is located at the bottom of the waterproof fixed shell, which can prevent processing lubricating fluid, dust and waste from entering the interior of the angle head.

[0015] Preferably, a pressure relief valve is fixedly installed inside the high-pressure gas storage shell, which can protect the worm. When the speed of the worm increases, the worm rotates to allow high-pressure gas to enter the high-pressure gas storage shell, and the worm will continuously compress air to supply the pneumatic motor.

[0016] The beneficial effects of the present invention are:

[0017] 1. In the present invention, the worm rotates and compresses the compressed gas into high-pressure gas, which provides power to the pneumatic motor. At the same time, the gas can cool the equipment and take away the heat generated by the equipment to keep the equipment working continuously.

[0018] 2. In the present invention, the shapes of the first gas transmission pipeline and the second gas transmission pipeline can be changed arbitrarily, which is convenient for providing ultra-long distance transmission, so that the shape of the transmission line can turn and the volume can be slender.

[0019] 3. In the present invention, the structure is relatively simple through pneumatic transmission, the volume can be miniaturized, the operation reliability is high, and the pneumatic motor has a high speed, which can reach more than 20,000 revolutions per minute.

[0020] 4. In the present invention, the exhaust muffler is used to reduce noise, and the air inlet is located at the bottom of the waterproof fixed shell through the design of the waterproof fixed shell, which can prevent processing lubricating fluid, dust, and waste from entering the interior of the angle head.

[0021] In short, traditional angle heads are all mechanically driven, with relatively large accessories and limited space for miniaturized design. The self-pressure angle head first generates high-pressure gas through the rotation of the worm, then transmits energy through the gas, and then converts it into cutting kinetic energy with a pneumatic motor. The gas transmission equipment can be designed to be very small, and the pneumatic motor has a simple design structure and can be designed to be very small. The combination of the two can design an ultra-small angle processing head, which is convenient for the miniaturization of the angle head. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The figure is a front view of a self-pressure-supply angle head of the present invention.

[0023] Figure 2 The figure is a side view of a self-pressure-supply angle head according to the present invention.

[0024] Figure 3 A self-pressure-supply angle head of the present invention Figure 2 Cross-sectional view at AA in the middle.

[0025] Figure 4 The present invention is a schematic structural diagram of an exhaust silencer, an exhaust port, a bearing, a waterproof fixing shell, and an air inlet of a self-pressure-supply angle head.

[0026] Figure 5 The figure is a top view of a self-pressure-supply angle head according to the present invention.

[0027] Figure 6 The present invention is a schematic structural diagram of a pneumatic motor and a tool of a self-pressure angle head.

[0028] Figure 7 This is the front view of a traditional angle head.

[0029] Numbers in the figure: 1. tool handle; 2. fixing device; 3. housing; 4. worm; 5. worm jacket; 6. high-pressure gas storage shell; 601. gas storage chamber; 7. pressure relief valve; 8. gas transmission device; 9. pneumatic motor; 10. tool; 11. exhaust muffler; 1101. exhaust port; 12. bearing; 13. waterproof fixing shell; 1301. air inlet. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] Example:

[0032] As attached Figure 1 To Attachment Figure 6 As shown:

[0033] A self-pressure-supply angle head includes a tool handle 1, which is used to connect to the rotating spindle of a CNC machine tool to obtain rotational kinetic energy. A worm 4 is fixedly connected to the bottom end of the tool handle 1. The tool handle 1 provides kinetic energy to drive the worm 4 to rotate. The worm 4 rotates at a high speed to compress gas downwards and press the high-pressure gas into a high-pressure gas storage shell 6. A worm outer sleeve 5 is provided on the outer wall of the worm 4. The worm outer sleeve 5 is used to seal and cooperate with the worm 4 to compress the gas. An outer shell 3 is provided on the outer side of the bottom of the tool handle 1. A bearing 12 is provided inside the outer shell 3. A fixing device 2 is fixedly connected to the outer wall of the outer shell 3. The bottom end of the worm gear casing 5 is fixedly connected to a high-pressure gas storage shell 6, the bottom of the high-pressure gas storage shell 6 is fixedly connected to a gas transmission device 8, the bottom end of the gas transmission device 8 is fixedly connected to an air motor 9, the air motor 9 converts the high-pressure gas into kinetic energy, drives the tool 10 to rotate, and the workpiece is cut by the tool 10, the output end of the air motor 9 is fixedly connected to the tool 10, the outer wall of the worm gear casing 5 is fixedly installed with an exhaust muffler 11, the exhaust muffler 11 plays a role in silencing and reducing noise, and the outer wall of the tool handle 1 is provided with a waterproof fixed shell 13.

[0034] in:

[0035] a. The inner wall of the bearing 12 is fixedly sleeved with the outer wall of the bottom of the knife handle 1, and the outer wall of the bearing 12 is fixedly connected with the inner wall of the shell 3. The rotation of the knife handle 1 can drive the steel balls in the bearing 12 to rotate. The rotation of the steel balls in the bearing 12 generates a large amount of heat. At the same time, the external gas flows through the gaps between the steel balls of the bearing 12, taking away the heat generated by the rotation friction of the bearing 12, thereby cooling the bearing 12 and increasing the gas temperature.

[0036] b. The outer wall of the housing 3 is threadedly connected with a plurality of locking screws. The angle of the angle head can be adjusted by loosening the locking screws, and the locking screws are fixed to control the processing direction.

[0037] c. A gas storage chamber 601 is provided inside the high-pressure gas storage shell 6. The output end of the worm 4 is connected to the input end of the high-pressure gas storage shell 6. The gas storage chamber 601 is used to store high-pressure gas.

[0038] in:

[0039] d. The gas transmission device 8 includes a first gas transmission pipeline and a second gas transmission pipeline. The shapes of the first gas transmission pipeline and the second gas transmission pipeline can be changed arbitrarily, which is convenient for providing ultra-long distance transmission, so that the shape of the transmission line can turn and the volume can be slender. The output ends of the first gas transmission pipeline, the second gas transmission pipeline, and the high-pressure gas storage shell 6 are connected to the output end of the first gas transmission pipeline, and the output end of the first gas transmission pipeline is connected to the input end of the pneumatic motor 9, and the gas output end of the pneumatic motor 9 is connected to the input end of the second gas transmission pipeline.

[0040] e. An exhaust port 1101 is provided at the output end of the exhaust muffler 11, and exhaust holes are opened inside the worm housing 5 and the high-pressure gas storage shell 6. The output end of the second gas transmission pipeline is connected to the input end of the exhaust hole, and the output end of the exhaust hole is connected to the input end of the exhaust muffler 11.

[0041] f. An air inlet 1301 is provided at the bottom of the waterproof fixed shell 13, and the air inlet 1301 is located above the bearing 12. Through the design of the waterproof fixed shell 13, the air inlet 1301 is located at the bottom of the waterproof fixed shell 13, which can prevent processing lubricating fluid, dust, and waste from entering the interior of the angle head.

[0042] g. A pressure relief valve 7 is fixedly installed inside the high-pressure gas storage shell 6. The pressure relief valve 7 can protect the worm 4. When the speed of the worm 4 increases, the worm 4 rotates to allow high-pressure gas to enter the high-pressure gas storage shell 6. The worm 4 will continuously supply compressed air to the pneumatic motor 9.

[0043] The specific usage and function of this embodiment are as follows:

[0044] When the present invention is used, the tool handle 1 is connected to the rotating spindle of the CNC machine tool to obtain rotational kinetic energy. The tool handle 1 rotates to drive the worm 4 to rotate. The worm 4 rotates at high speed, compresses the gas downward, and presses the high-pressure gas into the high-pressure gas storage shell 6. At the same time, the top of the worm 4 generates negative pressure to absorb the gas, and then the external gas enters the interior of the angle head through the air inlet 1301, and the gas enters the worm 4 through the gap between the steel balls of the bearing 12;

[0045] At the same time, the rotation of the knife handle 1 can drive the steel balls in the bearing 12 to rotate. The rotation of the steel balls in the bearing 12 generates a large amount of heat. At the same time, the external gas flows through the gaps between the steel balls in the bearing 12, taking away the heat generated by the rotational friction of the bearing 12, thereby cooling the bearing 12. At the same time, the gas temperature increases, thereby increasing the internal pressure of the high-pressure gas storage shell 6, so that the pneumatic motor 9 can obtain stronger kinetic energy.

[0046] The high-pressure gas in the high-pressure gas storage shell 6 is transported to the pneumatic motor 9 through the first gas transmission pipeline. The pneumatic motor 9 converts the high-pressure gas into kinetic energy, drives the tool 10 to rotate, and the tool 10 performs cutting processing on the workpiece;

[0047] At the same time, the gas passing through the pneumatic motor 9 can take away the heat generated by the rotation friction of the pneumatic motor 9, and then the gas enters the exhaust holes inside the high-pressure gas storage shell 6 and the worm gear jacket 5 through the second gas transmission pipeline, and the gas is discharged through the exhaust muffler 11 installed in the middle of the angle head. The gas passes through the exhaust holes inside the high-pressure gas storage shell 6 and the worm gear jacket 5, taking away part of the shell temperature of the high-pressure gas storage shell 6 and the worm gear jacket 5, thereby achieving the overall cooling of the angle head, and the exhaust muffler 11 plays a role in silencing and reducing noise.

[0048] For the above structure and process, please refer to Figure 1-6 .

[0049] Compared with patents CN111805281A and CN205218168U, the present invention has the following advantages: firstly, the present invention has its own compressed air device, which is compressed into high-pressure gas, and the high-pressure gas is used to provide power to the pneumatic motor. At the same time, the gas can cool the equipment and take away the heat generated by the equipment to keep the equipment working continuously. Secondly, the gas transmission can provide ultra-long distance transmission, the shape of the transmission line can turn, and the volume can be slender. Thirdly, the pneumatic transmission has a relatively simple structure, the volume can be miniaturized, the operating reliability is high, and the pneumatic motor has a high speed, which can reach more than 20,000 revolutions per minute.

[0050] In the description of the present invention, 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" 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 invention 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 invention.

[0051] 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 one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-pressure angle tool, comprising a tool handle (1), characterized in that: The bottom end of the knife handle (1) is fixedly connected to a worm (4), the outer wall of the worm (4) is provided with a worm sleeve (5), the outer side of the bottom of the knife handle (1) is provided with a shell (3), the interior of the shell (3) is provided with a bearing (12), the outer wall of the shell (3) is fixedly connected to a fixing device (2), the bottom end of the worm sleeve (5) is fixedly connected to a high-pressure gas storage shell (6), the bottom of the high-pressure gas storage shell (6) is fixedly connected to a gas transmission device (8), the bottom end of the gas transmission device (8) is fixedly connected to an air motor (9), the output end of the air motor (9) is fixedly connected to a tool (10), the outer wall of the worm sleeve (5) is fixedly installed with an exhaust muffler (11), and the outer wall of the knife handle (1) is provided with a waterproof fixing shell (13); The inner wall of the bearing (12) is fixedly sleeved with the outer wall of the bottom of the knife handle (1), and the outer wall of the bearing (12) is fixedly connected with the inner wall of the outer shell (3); An air inlet (1301) is provided at the bottom of the waterproof fixing shell (13), and the air inlet (1301) is located above the bearing (12); The gas transmission device (8) comprises a first gas transmission pipeline and a second gas transmission pipeline, the output end of the high-pressure gas storage shell (6) is connected to the output end of the first gas transmission pipeline, the output end of the first gas transmission pipeline is connected to the input end of the pneumatic motor (9), and the gas output end of the pneumatic motor (9) is connected to the input end of the second gas transmission pipeline; The output end of the exhaust muffler (11) is provided with an exhaust port (1101), the worm gear housing (5) and the high-pressure gas storage shell (6) are provided with exhaust holes, the output end of the second gas transmission pipeline is connected to the input end of the exhaust hole, and the output end of the exhaust hole is connected to the input end of the exhaust muffler (11).

2. A self-pressure-supply angle head according to claim 1, characterized in that: The outer wall of the housing (3) is threadedly connected with a plurality of locking screws.

3. A self-pressure-supply angle head according to claim 1, characterized in that: A gas storage chamber (601) is provided inside the high-pressure gas storage shell (6), and the output end of the worm (4) is connected to the input end of the high-pressure gas storage shell (6).

4. The self-pressure-supply angle head according to claim 1, characterized in that: A pressure relief valve (7) is fixedly installed inside the high-pressure gas storage shell (6).

Images