End cover part with spiral groove and five-axis linkage machine tool CNC machining method thereof

Abstract

The present invention relates to the technical field of end cap parts, and in particular to an end cap part with a spiral groove and a five-axis linkage machine tool CNC processing method thereof; the end cap part with a spiral groove comprises a cylindrical end cap body, the interior of the end cap body has a channel running through along the central axis, the first end of the end cap body is provided with a spiral groove type quick connection mechanism for connecting with an elastic positioning pin provided in the outlet interface of a paint storage device, and the second end of the end cap body is used for an external device. Compared with the prior art, the present invention is easy to install and disassemble, and has good sealing performance. The processing method of the present invention can improve the processing efficiency of the end cap part, and is more conducive to the requirements of processing and production accuracy and the improvement of production speed of thread groove type parts.

Description

Technical Field

[0001] The invention relates to the technical field of end cover parts, in particular to an end cover part with a spiral groove and a numerical control machining method of a five-axis linkage machine tool. Background Art

[0002] The outlet interface at one end of the paint storage device needs to be connected to an end cover part, and the end cover part is connected to other equipment to transport materials. Since the paint has a certain viscosity, the channel in the end cover part needs to be removed and cleaned regularly, so the end cover part is required to be able to be replaced quickly. At present, the conventional end cover with internal and external thread engagement connection is used. Although this end cover has good connection reliability, it is time-consuming and laborious to disassemble, and it is very inconvenient to use. There is an urgent need for a quick-release end cover part that can meet the use requirements, and to explore its processing method. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the above-mentioned prior art and to provide an end cover part with a spiral groove and a five-axis linkage machine tool CNC machining method thereof which is easy to install and disassemble, has good sealing performance, high production efficiency and good process universality.

[0004] The purpose of the present invention can be achieved by the following technical solutions:

[0005] A first aspect of the present invention provides an end cover part with a spiral groove, comprising a cylindrical end cover body, the interior of the end cover body having a channel running through the interior along the central axis, a spiral groove type quick connection mechanism being provided at the first end of the end cover body for cooperating and connecting with an elastic positioning pin arranged in the outlet interface of a paint storage device, and the second end of the end cover body being used for an external device.

[0006] Preferably, the spiral groove mechanism comprises a spiral groove arranged on the side wall of the end cover body, and the end of the spiral groove close to the first end of the end cover body is connected to a guide groove pointing to the first end of the end cover body.

[0007] Preferably, a distance is provided between the end of the guide groove and the edge of the end surface of the first end of the end cover body.

[0008] Preferably, the guide groove is a slope groove, and the end connected to the spiral groove is deeper.

[0009] Preferably, the length of the spiral groove around the side wall of the end cover body is less than one circle.

[0010] Preferably, the outer edge of the first end of the end cover body is chamfered.

[0011] Preferably, a sealing groove is further provided on the outer side wall of the end cover body for filling a sealing ring, and cooperates with the inner side wall of the outlet interface of the paint storage device to play a sealing role.

[0012] Preferably, the second end of the end cover body is provided with an enlarged head for an external device.

[0013] On the other hand, in order to reduce costs and increase efficiency, enterprises have achieved higher efficiency by optimizing the simulation processing steps on UG software. Due to the complexity of the thread and the correlation of various data, many errors are prone to occur in the design and actual processing process, and even experience is used instead of more accurate data design. The problem with spiral surface processing is that many manufacturers still often use empirical trial and error to solve it.

[0014] It is hoped that by studying the better simulation design of thread precision data on UG software, it can be better applied to actual processing to achieve lower cost and higher efficiency thread processing. The geometry of the spiral surface depends not only on the geometry of the tool, but also on the operating (machine setting) parameters. The same surface can be manufactured under completely different conditions, taking into account the machine settings and the geometry of the tool. Therefore, the choice of operating parameters and tool profile depends on the machine operator and his expertise in the process. Therefore, in the enterprise, if these early design processes can be optimized and the design test can be concluded in a shorter time, then the efficiency can be improved and it can be more widely used in the market.

[0015] A second aspect of the present invention provides a five-axis linkage machine tool CNC machining method for an end cover part having a spiral groove, comprising the following steps:

[0016] S1: Clamp the outer circle of one end of the blank with a three-jaw chuck, and turn the outer circle, chamfer the outer circle and the sealing groove;

[0017] S2: Drill a center positioning hole on the outer cylindrical end surface with a center drill and then drill a hole to ensure the center position of the hole;

[0018] S3: adding a boring tool to turn the inner hole based on step S2;

[0019] S4: Drill a deep hole on the lower end face of the inner hole and ream a hole on the hole;

[0020] S5: milling guide groove and spiral groove;

[0021] S6: Wrap the copper sheet on the outer circle of the machined blank and turn it over to clamp it, clamp the outer circle of the machined end, and machine the outer circle of the unprocessed end;

[0022] S7: Use a center drill to drill holes on the end surface of the outer circle for positioning, and use a drill bit to drill holes;

[0023] S8: Turning the inner circle, turning the inner chamfer of the inner circle, turning the threaded bottom hole, turning the inner groove of the inner circle, turning the inner thread of the inner circle, and forming a channel running through the central axis;

[0024] S9: The above steps S1 to S8 are firstly rough-machined once with a margin of 1 mm; then the first fine-machining is performed with a margin of 0.5 mm; then the second fine-machining is performed with a margin of 0.2 mm, and the processing of the end cover part with a spiral groove is completed.

[0025] Preferably, in the process of milling the guide groove and the spiral groove, a flat-bottom milling cutter is used. First, a large-diameter flat-bottom milling cutter is used to mill the guide groove and the spiral groove along the center line of the spiral groove and the guide groove, and then a small-diameter flat-bottom milling cutter is used to mill the high-precision spiral groove and guide groove in a cyclic mode along the offset curve of the spiral groove and the guide groove.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] (1) The present invention redesigns the connection method between the outlet interface of the paint storage device and the end cover part, and uses the elastic positioning pin set in the side wall of the outlet interface of the paint storage device to cooperate with the specially designed spiral groove type quick connection mechanism on the end cover part to realize the quick removal of the end cover part. When in use, it is necessary to insert the guide groove into the outlet interface facing the elastic positioning pin, and the elastic positioning pin slides into the guide groove along the guide groove, and then the end cover part is rotated to make the elastic limiting pin stuck in the spiral groove, thereby playing a limiting role on the end cover part. When removing the end cover part, it only needs to be rotated in the opposite direction and then pulled out.

[0028] (2) The outer edge of the first end of the end cover body is chamfered to facilitate the elastic positioning pin to enter the guide groove.

[0029] (3) The distance between the end of the guide groove and the first end of the end cover body ensures that the spiral groove is not directly connected to the chamfered interior of the outer edge, thereby ensuring sealing during use.

[0030] (4) The design of the sealing groove further ensures the sealing effect.

[0031] (5) The well-designed processing method for end cap parts enables more efficient production and more universal production conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of an end cover part with a spiral groove according to the present invention.

[0033] Figure 2 It is a cross-sectional schematic diagram of the end cover part with spiral grooves of the present invention.

[0034] Figure 3 It is a schematic diagram of the connection between the end cover part with spiral groove and the outlet interface of the paint storage device of the present invention.

[0035] Figure 4The tool path trajectory of the spiral groove and the guide groove of the end cover part with the spiral groove of the present invention.

[0036] In the figure, 1 is the end cover body, 21 is the spiral groove, 22 is the guide groove, 3 is the enlarged head, 4 is the sealing groove, 5 is the chamfer, 6 is the channel, 7 is the outlet interface of the paint storage device, 71 is the elastic positioning pin, and 8 is the sealing ring. DETAILED DESCRIPTION

[0037] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] Example 1

[0039] An end cap part having a spiral groove, such as Figures 1 to 3 As shown, it includes a cylindrical end cover body 1, the interior of the end cover body 1 has a channel 6 running through along the central axis, the first end of the end cover body 1 is provided with a spiral groove type quick connection mechanism, which is used to cooperate with the elastic positioning pin 71 set in the outlet interface 7 of the paint storage device, and the second end of the end cover body 1 is used for an external device (in this embodiment, the second end of the end cover body 1 is provided with an enlarged head 3 for an external device). In view of the defects of the prior art, the embodiment redesigns the connection method between the outlet interface of the paint storage device and the end cover parts, and utilizes the elastic positioning pin set in the side wall of the outlet interface of the paint storage device to cooperate with the specially designed spiral groove type quick connection mechanism on the end cover parts to achieve the quick release of the end cover parts. When in use, it is necessary to insert the guide groove into the outlet interface facing the elastic positioning pin, and the elastic positioning pin slides into the guide groove along the guide groove, and then rotate the end cover part so that the elastic limit pin is stuck in the spiral groove, thereby playing a limiting role on the end cover part. When removing the end cover part, it only needs to be rotated in the opposite direction and then pulled out. It is very convenient to disassemble and assemble.

[0040] In this embodiment, the spiral groove mechanism includes a spiral groove 21 arranged on the side wall of the end cover body 1, and the end of the spiral groove 21 close to the first end of the end cover body 1 is connected with a guide groove 22 pointing to the first end of the end cover body 1. There is a distance between the end of the guide groove 22 and the edge of the end surface of the first end of the end cover body 1. The spiral groove is not directly connected to the outer edge with a chamfered internal connection, which ensures the sealing during use. The guide groove 22 is a slope groove, and the end connected to the spiral groove 21 is deeper. The setting of the guide groove 22 is used to guide the elastic locating pin in the process of entering and exiting the spiral groove 21, especially the elastic locating pin 71 in the process of exiting the spiral groove 21. The outer edge of the first end of the end cover body 1 is provided with a chamfer 5. The setting of the chamfer 5 facilitates the elastic locating pin 71 to enter the guide groove. The elastic locating pin adopts the elastic locating pin of the prior art. For example, a spring-type telescopic locating pin structure is adopted (adopting the prior art, which will not be repeated in this embodiment). In this embodiment, the length of the spiral groove 21 around the side wall of the end cover body 1 is less than one circle. In order to further improve the sealing performance, a sealing groove 4 is further provided on the outer side wall of the end cover body 1 for filling a sealing ring 8 and cooperating with the inner side wall of the outlet interface 7 of the paint storage device to play a sealing role.

[0041] Example 2

[0042] A five-axis linkage machine tool CNC machining method for an end cover part with a spiral groove, used for machining the end cover part with a spiral groove of Example 1, comprises the following steps:

[0043] S1: Use a three-jaw chuck to clamp the outer circle of one end of the blank (the blank is a cylinder with a diameter of 45 mm and a length of 60 mm), and turn the outer circle, outer circle chamfer and sealing groove. In this embodiment, use a three-jaw chuck to clamp the outer circle of one end with a diameter of 42 mm, and turn the outer circle. Long, external chamfer 0.5×45°, turning seal groove

[0044] S2: Drill a center positioning hole on the outer cylindrical end surface with a center drill and then drill a hole to ensure the center position of the hole. In this embodiment, Use a center drill to drill a center hole on the end face of the outer circle, and drill a φ12×10.5mm deep hole on the upper end face;

[0045] S3: adding a boring tool to turn out an inner hole based on step S2. In this embodiment, the inner hole φ13mm is turned out by the boring tool;

[0046] S4: Drill a deep hole on the lower end surface of the inner hole and ream a hole on the hole. In this embodiment, a φ3.7×10mm deep hole is drilled on the lower end surface of the inner hole. The upper end surface of the fixed hole is reamed out deep holes;

[0047] S5: Milling the guide groove and the spiral groove. In this step, the characteristic connection between the spiral groove and the guide groove is particularly important. The tool path here first uses a large-diameter flat-bottom milling cutter to move along the center line of the spiral groove and the guide groove to mill a guide groove of R2.25 with a length of 6.5mm, a spiral groove with a width of 4.5mm, a pitch of 8mm, and a thread angle of 330°. Then, a small-diameter tool is used to mill high-precision spiral grooves and guide grooves in a cyclic mode along the offset curves of the spiral groove and the guide groove. In this embodiment, the position of the spiral groove is roughly milled out by the first large-radius tool, such as Figure 4 As shown, a small radius milling cutter is used in a circular manner, with a small step and high speed principle to mill out the precision, which greatly improves the precision of the spiral groove and ensures the processing efficiency, making up for the low fault tolerance and low position accuracy of geometric elements.

[0048] S6: Wrap the copper sheet on the outer circle of the machined blank and turn around to clamp it, clamp the outer circle of the machined end, and turn the outer circle of the unprocessed end. In this embodiment, wrap the copper sheet on the machined outer circle and turn around to clamp it, clamp mm outer circle, turning the outer circle of φ40×10mm deep;

[0049] S7: Drill holes on the end surface of the outer circle with a center drill for positioning, and drill holes with a drill bit. In this embodiment, drill holes on the end surface of the φ40 mm outer circle with a center drill for positioning, and drill holes with a depth of φ20×38.5 mm with a drill bit;

[0050] S8: Turn the inner circle, turn the inner chamfer of the inner circle, turn the threaded bottom hole, turn the inner groove of the inner circle, turn the inner thread of the inner circle, and form a channel running through the central axis. In this embodiment, the inner circle is turned to be φ31.5×27.5mm deep. The inner circle chamfer of the inner circle of φ27×2mm is turned to be 2×61°. The threaded bottom hole is turned to be φ21×11mm deep, and the inner groove of the inner circle is turned to be φ27×2mm deep. The inner thread of the inner circle is turned to be M24×1.5mm, with a depth of 9mm;

[0051] S9: The above steps S1 to S8 are firstly rough-machined once, with an allowance of 1mm and a tool speed of 2000 rpm; then the first fine-machining is performed, with an allowance of 0.5mm and a tool speed of 3000 rpm; then the second fine-machining is performed, with an allowance of 0.2mm and a tool speed of 5000 rpm, the part data is checked, and the processing of the end cover part with a spiral groove is completed.

[0052] The above description of the embodiments is to facilitate the understanding and use of the invention by those skilled in the art. It is obvious that those skilled in the art can easily make various modifications to these embodiments and apply the general principles described herein to other embodiments without creative work. Therefore, the present invention is not limited to the above embodiments, and improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the scope of protection of the present invention.

Claims

1. An end cap part with a spiral groove, characterized in that: The invention comprises a cylindrical end cover body (1), the end cover body (1) has a passage (6) extending along a central axis therein, a spiral groove type quick connection mechanism is provided at a first end of the end cover body (1) for matingly connecting with an elastic positioning pin (71) provided in an outlet interface (7) of a paint storage device, and a second end of the end cover body (1) is used for connecting to an external device; The spiral groove type quick connection mechanism comprises a spiral groove (21) arranged on the side wall of the end cover body (1), wherein the end of the spiral groove (21) close to the first end of the end cover body (1) is connected to a guide groove (22) pointing to the first end of the end cover body (1); There is a distance between the end of the guide groove (22) and the edge of the end surface of the first end of the end cover body (1); The outer edge of the first end of the end cover body (1) is provided with a chamfer (5).

2. The end cap part with spiral groove according to claim 1, characterized in that: The guide groove (22) is a slope groove, and the end connected to the spiral groove (21) is deeper.

3. The end cap component with spiral groove according to claim 1, characterized in that: The length of the spiral groove (21) around the side wall of the end cover body (1) is less than one circle.

4. The end cap component with spiral groove according to claim 1, characterized in that: A sealing groove (4) is also provided on the outer side wall of the end cover body (1) for loading a sealing ring (8) and cooperating with the inner side wall of the outlet interface (7) of the paint storage device to perform a sealing function.

5. The end cap component with spiral groove according to claim 1, characterized in that: The second end of the end cover body (1) is provided with an enlarged head (3) for connecting an external device.

6. A five-axis CNC machining method for an end cap part with a spiral groove as claimed in claim 4, characterized in that: The following steps are involved: S1: Clamp the outer circle of one end of the blank with a three-jaw chuck, and turn the outer circle, chamfer the outer circle and the sealing groove; S2: Drill a center positioning hole on the outer cylindrical end surface with a center drill and then drill a hole to ensure the center position of the hole; S3: adding a boring tool to turn the inner hole based on step S2; S4: Drill a deep hole on the lower end face of the inner hole and ream a hole on the hole; S5: milling guide groove and spiral groove; S6: Wrap the copper sheet on the outer circle of the machined blank and turn it over to clamp it, clamp the outer circle of the machined end, and machine the outer circle of the unprocessed end; S7: Use a center drill to drill holes on the end surface of the outer circle for positioning, and use a drill bit to drill holes; S8: Turning the inner circle, turning the inner chamfer of the inner circle, turning the threaded bottom hole, turning the inner groove of the inner circle, turning the inner thread of the inner circle, and forming a channel running through the central axis; S9: The above steps S1 to S8 are firstly rough-machined once with a margin of 1 mm; then the first fine-machining is performed with a margin of 0.5 mm; then the second fine-machining is performed with a margin of 0.2 mm, and the processing of the end cover part with a spiral groove is completed.

7. The five-axis linkage machine tool CNC machining method for an end cover part with a spiral groove according to claim 6, characterized in that: In the process of milling the guide groove and the spiral groove, a flat-bottomed milling cutter is used. First, a large-diameter flat-bottomed milling cutter is used to mill the guide groove and the spiral groove along the center line of the spiral groove and the guide groove. Then, a small-diameter flat-bottomed milling cutter is used to mill the spiral groove and the guide groove in a cycle mode along the offset curve of the spiral groove and the guide groove to produce high-precision spiral grooves and guide grooves.

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