A processing device and method for deicing the inner spiral of a retaining ring

Abstract

The application discloses a kind of processing device and processing method of deicing baffle ring inner spiral, positioning ring is installed on device main body, guaranteeing flat square parallel, using internal hexagonal cylindrical end locking screw locking;Dustproof ring and deicing baffle ring are respectively installed in device main body, using internal hexagonal flat end locking screw locking;Tool body is installed in positioning ring, using cylindrical pin is positioned, guaranteeing that tool body and the flat square of positioning ring are parallel, using internal hexagonal cylindrical head screw locking tool body;Install in tool body middle this method when processing deicing baffle ring inner spiral, can effectively guarantee the angular position relationship of inner spiral and outer circle key, end surface key groove, guarantee that the helix of deicing baffle ring inner spiral and ball nut inner spiral is coincident when assembling, and meet the clearance requirement between deicing baffle ring assembly end surface.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of ball screw pairs, and particularly relates to a processing device for an ice-removing blocking ring inner raceway in a ball screw pair. BACKGROUND

[0002] As shown in Figure 1 , Figure 2 , the ball nut assembly is composed of a ball nut 12, a dust-proof ring 14 and an ice-removing blocking ring 13. The ice-removing blocking ring is positioned by an outer round key and is installed at both ends of the ball nut, and the dust-proof ring is connected with the ice-removing blocking ring through an end face key groove. In order to ensure the normal operation of the ball screw pair, it is necessary to ensure that the ice-removing blocking ring, the dust-proof ring and the inner raceway of the ball nut are in the same spiral line, and the ice-removing blocking ring, the dust-proof ring and the end face of the inner hole of the ball nut need to ensure a 0.5mm gap.

[0003] As shown in Figure 3 , Figure 4 , Figure 5 , the structure of the ice-removing blocking ring 13 is composed of an inner raceway, an outer round key, an end face key groove and an inner hole opening groove. In order to ensure the assembly technical requirements, the angular positional relationship between the inner raceway and the outer round key and the end face key groove must be ensured during processing.

[0004] The traditional processing method of the ice-removing blocking ring is to ensure the positional relationship of the inner raceway and the key, the end face key groove and other features through scribing and matching. First, the inner raceway of the ice-removing blocking ring is processed, and then the ice-removing blocking ring is assembled with the ball nut, the dust-proof ring, the ball screw and other parts. According to the assembly gap requirement, the key and the end face key groove and other features are scribed and matched. The traditional processing method has a complicated processing flow, low processing efficiency and unstable quality, so it is necessary to explore a method for processing the raceway of the ice-removing blocking ring to ensure the quality of the ice-removing blocking ring processing. SUMMARY

[0005] The purpose of the present application is to provide an ice-removing blocking ring inner raceway processing device and a processing method. This method can effectively ensure the angular positional relationship between the inner raceway and the outer round key and the end face key groove when processing the inner raceway of the ice-removing blocking ring, ensure that the spiral line of the inner raceway of the ice-removing blocking ring coincides with the inner raceway of the ball nut during assembly, and meet the ice-removing blocking ring assembly end face gap requirement. This method has low processing cost, obvious improvement in processing efficiency compared with the traditional processing, stable and reliable processing quality, and effectively solves the shortcomings of the conventional processing method of the ice-removing blocking ring.

[0006] The technical scheme of the present application is a processing device for an ice-melting blocking ring inner screw channel, comprising a device main body, characterized in that the device main body is clamped on a machine tool through three claws; a positioning ring is installed on the device main body to ensure that the flats are parallel, and is locked by an inner hexagonal cylindrical end set screw; a dustproof ring and an ice-melting blocking ring are respectively installed in the device main body and locked by an inner hexagonal flat end set screw; a tool setting body is installed in the positioning ring and is positioned by a cylindrical pin to ensure that the tool setting body and the flats of the positioning ring are parallel, and the tool setting body is locked by an inner hexagonal cylindrical head screw; and a centering block is installed in the tool setting body.

[0007] The present application has the following beneficial effects:

[0008] 1. The present application has simple structure and principle, high repeated positioning accuracy, convenient disassembly and assembly, fast and accurate tool setting, stable processing quality, and good interchangeability.

[0009] 2. After the device main body is clamped and aligned once by the numerical control lathe, only the tool setting body needs to be disassembled and assembled to realize fast replacement of parts.

[0010] 3. The present application solves the problems of complicated processing flow, low processing efficiency, and unstable quality caused by conventional processing methods, greatly improves the processing efficiency and processing quality of the ice-melting blocking ring. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a structure diagram of an existing ball nut assembly;

[0012] Figure 2 is a left view of Figure 1 ;

[0013] Figure 3 is a structure diagram of an existing ice-melting blocking ring;

[0014] Figure 4 is a left view of Figure 3 ;

[0015] Figure 5 is a right view of Figure 3 ;

[0016] Figure 6 is a three-dimensional structure diagram of the ice-melting blocking ring of the present application;

[0017] Figure 7 is a structure diagram of the combined processing device for the ice-melting blocking ring of the present application;

[0018] Figure 8 is a top view of Figure 7 ;

[0019] Figure 9 is a left view of Figure 7 ;

[0020] Figure 10 is a three-dimensional view of the ice-melting baffle ring combination machining device of the present application.

[0021] BRIEF DESCRIPTION OF DRAWINGS

[0022] 1. device body; 2. dustproof ring; 3. ice-melting baffle ring; 4. positioning ring; 5. tool setting body; 6. centering block; 7. inner hexagonal cylindrical end set screw; 8. inner hexagonal flat end set screw; 9. inner hexagonal cylindrical head screw; 10. cylindrical pin; 11. turning tool bar; 12. ball nut; 13 ice-melting baffle ring; 14. dustproof ring. DETAILED DESCRIPTION

[0023] As shown in Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , the embodiment is an ice-melting baffle ring inner spiral channel machining device. The device body 1 is clamped on the machine tool by the three-jaw chuck. The positioning ring 4 is installed on the device body 1 to ensure that the flats are parallel, and the inner hexagonal cylindrical end set screw 7 is used for locking. The dustproof ring 2 and the ice-melting baffle ring 3 are installed in the device body 1, respectively, and the inner hexagonal flat end set screw 8 is used for locking. The tool setting body 5 is installed in the positioning ring 4, and the cylindrical pin 10 is used for positioning to ensure that the tool setting body 5 and the positioning ring 4 are parallel, and the inner hexagonal cylindrical head screw 9 is used for locking the tool setting body 5. The centering block 6 is installed in the tool setting body 6.

[0024] The combination machining device has high repeat positioning accuracy, accurate and convenient tool setting, and is easy to disassemble and assemble, which can meet the quality requirements of ice-melting baffle ring machining.

[0025] WORKING PRINCIPLE

[0026] The main movements of the mechanical device cutting are: the main movement of the ice-melting baffle ring rotating in the circumferential direction driven by the three-jaw chuck and the auxiliary movement of the turning tool bar 11 advancing in the axial direction. The two movements are combined to realize the cutting machining of the ice-melting baffle ring inner spiral channel.

[0027] The ice-melting baffle ring inner spiral channel machining process is explained as follows:

[0028] ① The device body 1 is clamped on the machine tool chuck by the three-jaw chuck, and the dial indicator is used to align the device body 1 outer diameter run-out, which is not greater than 0.015mm;

[0029] ② The positioning ring 4 is installed on the device body 1, and the standard block gauge and tool edge ruler are used to ensure that the flats of the positioning ring 4 and the device body are parallel, and the inner hexagonal cylindrical end set screw 7 is used for locking the positioning ring 4;

[0030] ③Install the dustproof ring 2 and the deicing baffle ring 3 in the device body 1 respectively, use copper pads to adjust the end face fit clearance of the dustproof ring 2 and the deicing baffle ring 3 to 0.5mm during installation, and then lock the deicing baffle ring 3 by using the internal hexagonal flat end locking screw 8;

[0031] ④Install the tool holder 5 in the positioning ring 4, use the cylindrical pin 10 for positioning, ensure that the flat square of the tool holder 5 is parallel to the flat square of the positioning ring 4, and lock the tool holder by using the internal hexagonal cylindrical head screw 9;

[0032] ⑤Install the centering block 6 in the tool holder 5, and use fastening glue for firm adhesion;

[0033] ⑥Before processing, use the centering block 6 to perform tool setting, and pass the spiral line of the spiral pass through the center of the tool setting block by adjusting the axial position of the tool bar 10.

[0034] ⑦After tool setting is completed, process the inner spiral pass of the dustproof ring 2 and the deicing baffle ring 3;

[0035] ⑧After the first piece is processed, remove the tool holder 5, the deicing baffle ring 3 and the dustproof ring 2 respectively;

[0036] ⑨After the deicing baffle ring 3 and the dustproof ring 2 are tested and installed in the ball screw pair for the first piece, it is checked that the ball screw pair should run smoothly without jamming, and the end face fit clearance of the deicing baffle ring 3 and the dustproof ring 2 should be 0.5mm;

[0037] ⑩After the first piece is tested and installed, complete the processing of subsequent parts according to the process ③-⑦, and the subsequent parts do not need to be tested and installed.

[0038] The structure and principle of the present application are simple, the repeated positioning precision is high, the disassembly and assembly are convenient, the tool setting can be quickly and accurately performed, the processing quality is stable, and the interchangeability is good. After the device body is clamped and aligned once by using the numerical control lathe, only the tool holder needs to be disassembled and assembled, so that the parts can be quickly replaced. According to the processing and assembly characteristics of the deicing baffle ring, the problems of complicated processing flow, low processing efficiency and unstable quality caused by the conventional processing mode are solved, and the processing efficiency and processing quality of the deicing baffle ring are greatly improved.

[0039] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.

Claims

1. A method of machining a de-icing baffle inner spiral pass machining device, characterized by, The processing device comprises a device body (1) which is clamped on a machine tool by three claws; a positioning ring (4) is installed on the device body (1) to ensure that the flats are parallel, and is locked by an internal hexagonal cylindrical end set screw (7); a dustproof ring (2) and an ice removal baffle ring (3) are respectively installed in the device body (1) and are locked by an internal hexagonal flat end set screw (8); a tool setting body (5) is installed in the positioning ring (4) and is positioned by a cylindrical pin (10) to ensure that the tool setting body (5) is parallel to the flats of the positioning ring (4), and the tool setting body (5) is locked by an internal hexagonal cylindrical head screw (9); a centering block (6) is installed in the tool setting body (5); The processing method comprises the following steps: Step ①: the device body (1) is clamped on the chuck of a machine tool, and the outer diameter runout of the device body (1) is adjusted to be not greater than 0.015mm by using a dial indicator; Step ②: the positioning ring (4) is installed on the device body (1), and the flats of the positioning ring (4) and the device body are ensured to be parallel by using a standard block gauge and a tool edge ruler, and the positioning ring (4) is locked by an internal hexagonal cylindrical end set screw (7); Step ③: the dustproof ring (2) and the ice removal baffle ring (3) are respectively installed in the device body (1), the end face gap of the dustproof ring (2) and the ice removal baffle ring (3) is adjusted to be 0.5mm by using a copper pad during installation, and the ice removal baffle ring (3) is locked by an internal hexagonal flat end set screw (8); Step ④: the tool setting body (5) is installed in the positioning ring (4) and is positioned by a cylindrical pin (10) to ensure that the tool setting body (5) is parallel to the flats of the positioning ring (4), and the tool setting body is locked by an internal hexagonal cylindrical head screw (9); Step ⑤: the centering block (6) is installed in the tool setting body (5) and is firmly adhered by using fastening glue; Step ⑥: before processing, the tool is set by using the centering block (6), and the helical line of the spiral pass is made to pass through the center of the tool setting block by adjusting the axial position of the turning tool bar (11); Step ⑦: after the tool setting is completed, the inner spiral pass of the dustproof ring (2) and the ice removal baffle ring (3) is processed; Step ⑧: after the first piece is processed, the tool setting body (5), the ice removal baffle ring (3) and the dustproof ring (2) are respectively removed; Step ⑨: after the first piece is tested and installed, the ice removal baffle ring (3) and the dustproof ring (2) are checked in the ball screw pair, and the ball screw pair should run smoothly without jamming, and the end face gap of the ice removal baffle ring (3) and the dustproof ring (2) should be 0.5mm; Step ⑩: after the first piece is tested and installed, the subsequent part processing is completed according to steps ③-⑦, and the subsequent processed parts do not need to be tested and installed.

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