Device for machining rotary body part

Abstract

The utility model discloses a device for processing a revolving body part, a first through hole penetrating through the left end face and the right end face of the revolving body part is formed in the middle of the revolving body part, an indexing mechanism comprises an indexing head, a three-jaw chuck, a mandrel and a center, and the indexing head and the center are both arranged on a workbench; the three-jaw chuck is arranged on the right side of the dividing head; a first cylinder and a second cylinder are arranged at the left end and the right end of the mandrel respectively, the middle of the mandrel is arranged in a first through hole in the middle of the rotary part, the three-jaw chuck clamps the first cylinder, and the tip abuts against the second cylinder. The pressing mechanism comprises a guide column, a pull rod and a pressing block, a guide groove extending in the Y-axis direction is formed in the pressing block, and the pressing block makes contact with the upper surface of the rotary body part; the guide column is vertically arranged between the workbench and the pressing block. The lower end of the pull rod is fixed to the workbench, and the upper end of the pull rod is arranged in the guide groove. The device is convenient to install and easy to operate, and a plurality of holes in the side face of the rotary body part can be machined through one-time clamping.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, and in particular to a device for machining rotating parts. Background Technology

[0002] In the modern motor manufacturing industry chain, rotating parts such as bushings and flanges typically have through holes in the middle, requiring multiple holes to be machined on their sides around their central axis. Taking a motor bushing as an example, its circumferential side usually needs to be machined with 6-12 evenly distributed holes. These holes serve critical functions such as bolt connection, heat dissipation channels, and lubrication medium delivery. For small and medium-sized motor manufacturing enterprises, this type of multi-hole machining task faces dual constraints of equipment capacity and process cost.

[0003] In current mainstream machining equipment configurations, small and medium-sized enterprises generally use economical three-axis (X / Y / Z-axis) vertical milling machines. These traditional machines lack the crucial fourth axis (A-axis) function, making it impossible to rotate the workpiece around its own axis. This presents a significant technical obstacle when processing parts requiring drilling at multiple angles. In traditional processes, operators must manually adjust the workpiece clamping angle, performing multiple clamping and positioning operations to complete the milling of holes on each side. Taking a bushing as an example, to drill six holes evenly around its circumference, after machining each hole, the worker must release the clamp, rotate the workpiece to the next predetermined angle (e.g., 60°), and then re-clamp and position it. This cumbersome process easily leads to the accumulation of positioning errors, resulting in a series of quality problems such as uneven hole distribution and excessive coaxiality deviation. More seriously, frequent clamping operations greatly increase auxiliary time, severely restricting the improvement of production efficiency. To solve this technical challenge, the ideal solution is to use a rotary table equipped with a CNC system (i.e., introducing an A-axis function) to achieve precise linkage between the milling cutter and the workpiece rotary table, thereby automating multi-angle drilling operations. However, such equipment is expensive (typically 3-5 times the price of a conventional milling machine) and requires specialized programming and operation personnel, far exceeding the financial and technical capabilities of small and medium-sized enterprises (SMEs). Therefore, exploring an economical and efficient solution under limited resources has become a pressing technical challenge for these enterprises.

[0004] The above background information is provided only to aid in understanding the concept and technical solution of this utility model. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0005] The purpose of this utility model is to propose a device for processing rotating parts, so as to solve the technical problems of the prior art, such as the accumulation of positioning errors, cumbersome process, and low production efficiency caused by multiple clamping and processing of hollow rotating parts.

[0006] Therefore, this utility model proposes a device for processing rotating parts.

[0007] Preferably, the present invention may also have the following technical features:

[0008] An apparatus for processing rotating parts, wherein the rotating parts have a first through hole in the middle that penetrates the left and right end faces, and includes a base, a worktable, a spindle, an indexing mechanism and a clamping mechanism, wherein the worktable is disposed on the base and can move in the X / Y axis direction;

[0009] The spindle is positioned above the worktable and can move in the Z-axis direction driven by a motor.

[0010] The indexing mechanism includes an indexing head, a three-jaw chuck, a mandrel, and a center. The indexing head and the center are both disposed on the worktable, respectively on the left and right sides of the main spindle. The three-jaw chuck is disposed on the right side of the indexing head. The left and right ends of the mandrel are respectively provided with a first cylinder and a second cylinder. The middle part of the mandrel is disposed in a first through hole in the middle of the rotating part. The three-jaw chuck clamps the first cylinder, and the center presses against the second cylinder to fix the rotating part below the main spindle. Under the drive of the indexing head, the rotating part can rotate around its central axis.

[0011] The clamping mechanism includes a guide post, a pull rod, and a pressure block. The pressure block is provided with a guide groove extending along the Y-axis direction, and the pressure block is in contact with the upper surface of the rotating part. The guide post is vertically arranged between the worktable and the pressure block. The pull rod is telescopic, vertically arranged, with its lower end fixed to the worktable and its upper end arranged in the guide groove.

[0012] Preferably, it further includes a support block disposed on the worktable below the rotating part, the upper surface of the support block being provided with a V-shaped groove extending in the X direction.

[0013] Preferably, the opening angle α of the V-groove is 90°-120°.

[0014] Preferably, the guide post is connected to the end of the pressure block away from the main shaft, and the upper and lower ends of the guide post are respectively provided with a first guide sleeve and a second guide sleeve that are in clearance fit with the guide post, and the upper surface of the first guide sleeve is in contact with the pressure block.

[0015] Preferably, it further includes a pad disposed between the second guide sleeve and the worktable.

[0016] Preferably, the mandrel and the first through hole are fitted with a transition fit.

[0017] Preferably, it also includes a nut disposed on the right end of the mandrel, on the second cylinder.

[0018] Preferably, the tip is disposed on the tailstock, and the tailstock has an oblong hole in the vertical direction.

[0019] The beneficial effects of this utility model compared with the prior art include: The device mentioned in this utility model is an improvement on the existing ordinary three-axis vertical milling machine. An indexing mechanism is added to the worktable, enabling small and medium-sized manufacturing enterprises to complete the machining of multiple holes on the side of motor rotating parts under limited resource conditions (only traditional three-axis vertical milling machines are available). For example, small and medium-sized motor manufacturing enterprises can complete the machining of multiple holes on the side of motor rotating parts. The mandrel passes through the first through hole in the rotating part, and the rotating part is fixed by the indexing head and center. The whole process is convenient to install and simple to operate. Multiple holes on the side of the rotating part can be machined on the three-axis vertical milling machine with one clamping, avoiding the accumulation of positioning errors caused by multiple clamping and positioning, which would affect the machining accuracy. With the help of tie rods and guide pillars, the pressure block presses the rotating part tightly, avoiding the vibration of the part during the machining process, which would affect the machining accuracy. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0021] Figure 2 This is a schematic diagram of the structure of the support block according to a specific embodiment of this utility model.

[0022] Explanation of reference numerals in the attached drawings: 01-Rotating part; 011-First through hole; 02-Tailstock; 021-Oblique hole; 03-Worktable; 04-Spindle; 05-Indexing head; 06-Three-jaw chuck; 07-Mandrel; 071-First cylinder; 072-Second cylinder; 08-Center; 09-Guide post; 10-Pull rod; 11-Pressure block; 111-Guide groove; 12-Support block; 121-V-groove; 13-First guide sleeve; 14-Second guide sleeve; 15-Padded block; 16-Nut. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to specific embodiments and the accompanying drawings. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0024] Non-limiting and non-exclusive embodiments will be described with reference to the following figures, wherein the same reference numerals denote the same parts unless otherwise specifically stated.

[0025] An apparatus for machining rotating parts, such as Figure 1 and 2 As shown, the rotating part 01 has a first through hole 011 in the middle that penetrates its left and right end faces. This device is an improvement on the existing ordinary three-axis (X / Y / Z axis) vertical milling machine, which enables small and medium-sized manufacturing enterprises to complete the multi-hole machining of the side of the rotating part 01 under limited resource conditions. It should be noted that the multi-hole here refers to multiple holes that are distributed around the central axis of the rotating part 01 on the side. Specifically, it includes a base, a worktable 03, a spindle 04, an indexing mechanism, and a clamping mechanism. The worktable 03 is mounted on the base and can move in the X / Y axis directions. The spindle 04 is mounted above the worktable 03 and can move in the Z axis direction driven by a motor. The indexing mechanism includes an indexing head 05, a three-jaw chuck 06, a mandrel 07, and a center 08. The indexing head 05 and the center 08 are both mounted on the worktable 03 and are respectively located on the left and right sides of the spindle 04. The three-jaw chuck 06 is located on the right side of the indexing head 05. The mandrel 07 has a first cylinder 071 and a second cylinder 072 at its left and right ends, respectively. The middle of the mandrel 07 is located at the center of the rotating part 01. Within a through hole 011, the three-jaw chuck 06 clamps the first cylinder 071, and the center 08 presses against the second cylinder 072 to fix the rotating part 01 below the main shaft 04. Driven by the indexing head 05, the rotating part 01 can rotate around its central axis. The clamping mechanism includes a guide post 09, a pull rod 10, and a pressure block 11. The pressure block 11 is provided with a guide groove 111 extending along the Y-axis direction. The pressure block 11 is in contact with the upper surface of the rotating part 01. The guide post 09 is vertically arranged between the worktable 03 and the pressure block 11. The pull rod 10 is telescopic, vertically arranged, with its lower end fixed to the worktable 03 and its upper end arranged in the guide groove 111.

[0026] This embodiment takes the processing of a motor bushing as an example. Three through holes need to be evenly processed on its circumferential side (that is, the central axis of each hole is 120°). In actual production, first insert the mandrel 07 into the first through hole 011 of the bushing, so that the three-jaw chuck 06 clamps the first cylinder of the mandrel 07, and the center pin presses against the second cylinder 072. Adjust the bushing to a suitable position, adjust the extension length of the pull rod 10 and its specific position in the guide groove 111, so that the pull rod 10 pulls the bushing and locks it, and then the processing of the through holes can begin (of course, before processing, the coaxiality, flatness and perpendicularity need to be calibrated, which will not be described in detail here). After processing the first hole, adjust the indexing head so that the bushing rotates 120° to process the second hole. The method for processing the third hole is the same as above. The device is used to process the hollow rotating part 01 of the motor. The mandrel 07 passes through the first through hole in the rotating part 01. The rotating part 01 is fixed by the indexing head 05 and the center 08. The whole process is easy to install and simple to operate. Multiple holes on the side of the rotating part 01 can be processed by one calibration, avoiding the accumulation of positioning errors caused by multiple clamping and positioning, which would affect the processing accuracy. With the help of the pull rod 10 and the guide post 09, the pressure block 11 presses the rotating part 01 tightly to prevent the part from vibrating during the processing, which would affect the processing accuracy.

[0027] In some examples of this embodiment, a support block 12 is also included, disposed on the worktable 03 and below the rotating part 01. The upper surface of the support block 12 is provided with a V-groove 121 extending in the X direction. The symmetrical structure of the V-groove 121 can automatically align the axis of the rotating part 01 with the center, reducing alignment time and errors during installation. The V-groove 121 has a large contact area with the rotating part 01, which can evenly distribute pressure and prevent displacement of the rotating part 01 during processing. Stable support can reduce vibration during processing, improve processing accuracy, and avoid damage to the surface of the rotating part 01. The V-groove 121 can accommodate rotating parts of different diameters, improving the versatility of the support block 12. Preferably, the opening angle α of the V-groove 121 is typically 90°-120°.

[0028] In some examples of this embodiment, the guide post 09 is connected to the end of the pressure block 11 away from the main shaft. The upper and lower ends of the guide post 09 are respectively provided with a first guide sleeve 13 and a second guide sleeve 14 that are clearance-fitted with the guide post 09. The upper surface of the first guide sleeve 13 contacts the pressure block 11. The guide post 09 provides vertical guidance, assists in positioning the pressure block 11, simplifies the installation process, and improves production efficiency; it prevents the pressure block 11 from shifting during clamping, ensuring uniform contact between the pressure block 11 and the surface of the rotating part 01; the pull rod 10 directly transmits pressure during operation, and the guide post 09 effectively reduces friction, making the clamping force more effective. The guide post 09 is connected to the end of the pressure block 11 away from the main shaft, while the pull rod 10 is positioned between the guide post 09 and the rotating part 01. The guide post 09 enhances the stability of the clamping mechanism, and the cooperation between the guide post 09 and the pull rod 10 prevents vibration during processing and improves the machining accuracy of the hole. Specifically, a pad 15 can be provided between the second guide sleeve 14 and the worktable 03 to provide support for the second guide sleeve 14, increase the stability of the structure, and reduce vibration.

[0029] In other examples of this embodiment, the mandrel 07 and the first through hole 011 are fitted with a transition fit, so that the mandrel 07 can fit tightly with the rotating part 01, with a certain centering accuracy, and is convenient for disassembly after processing. Specifically, a nut 16 can also be provided on the right end of the mandrel 07 and on the second cylinder 072 to facilitate the installation, adjustment and disassembly of the mandrel 07.

[0030] In some other examples of this embodiment, the tip 08 is disposed on the tailstock 02, and the tailstock 02 is provided with an oblong hole 021 in the vertical direction (i.e., the Z direction) so that the tip 08 can be finely adjusted to better clamp the rotating part 01.

[0031] Those skilled in the art will recognize that numerous variations are possible with respect to the above description, and the embodiments and figures are merely for describing one or more specific implementations.

[0032] Although exemplary embodiments of the present invention have been described and illustrated, those skilled in the art will understand that various changes and substitutions can be made thereto without departing from the spirit of the present invention. Furthermore, many modifications can be made to adapt specific situations to the doctrine of the present invention without departing from the central concept of the present invention described herein. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but may include all embodiments and equivalents that fall within the scope of the present invention.

Claims

1. An apparatus for machining a rotating part, wherein the rotating part has a first through hole penetrating its left and right end faces, characterized in that: It includes a base, a worktable, a spindle, an indexing mechanism, and a clamping mechanism. The worktable is disposed on the base, and the base can move in the X / Y axis direction. The spindle is positioned above the worktable and can move in the Z-axis direction driven by a motor. The indexing mechanism includes an indexing head, a three-jaw chuck, a mandrel, and a center. The indexing head and the center are both disposed on the worktable, respectively on the left and right sides of the main spindle. The three-jaw chuck is disposed on the right side of the indexing head. The left and right ends of the mandrel are respectively provided with a first cylinder and a second cylinder. The middle part of the mandrel is disposed in a first through hole in the middle of the rotating part. The three-jaw chuck clamps the first cylinder, and the center presses against the second cylinder to fix the rotating part below the main spindle. Under the drive of the indexing head, the rotating part can rotate around its central axis. The clamping mechanism includes a guide post, a pull rod, and a pressure block. The pressure block is provided with a guide groove extending along the Y-axis direction, and the pressure block is in contact with the upper surface of the rotating part. The guide post is vertically arranged between the worktable and the pressure block. The pull rod is telescopic, vertically arranged, with its lower end fixed to the worktable and its upper end arranged in the guide groove.

2. The apparatus for processing rotating parts according to claim 1, characterized in that: It also includes a support block disposed on the worktable below the rotating part, the upper surface of which is provided with a V-shaped groove extending in the X direction.

3. The apparatus for processing rotating parts according to claim 2, characterized in that: The opening angle α of the V-groove is 90°-120°.

4. The apparatus for machining rotating parts according to claim 1, characterized in that: The guide post is connected to the end of the pressure block away from the main shaft. The upper and lower ends of the guide post are respectively provided with a first guide sleeve and a second guide sleeve that are in clearance fit with the guide post. The upper surface of the first guide sleeve is in contact with the pressure block.

5. The apparatus for machining rotating parts according to claim 4, characterized in that: It also includes a pad block disposed between the second guide sleeve and the worktable.

6. The apparatus for machining rotating parts according to claim 1, characterized in that: The mandrel and the first through hole are fitted with a transition fit.

7. The apparatus for machining rotating parts according to claim 1, characterized in that: It also includes a nut located on the right end of the mandrel, on the second cylinder.

8. The apparatus for machining rotating parts according to claim 1, characterized in that: The tip is disposed on the tailstock, and the tailstock has an oblong hole in the vertical direction.

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