Machining device for upper boss face and lower boss face in planet carrier

Abstract

The utility model discloses a processing device for upper and lower boss surfaces in a planet carrier. Comprising a tool and a tool rest, the tool comprises a scraper, the tool rest comprises a clamping rod, the clamping rod comprises a working end axially corresponding to a corresponding inner hole of a workpiece and a driving connecting end connected to the working end, and the working end is provided with a clamping device. And the scraper corresponds to the corresponding boss surface of the workpiece, and is transversely arranged at the working end of the clamping rod through a clamping device relative to the clamping rod. The machining device for the upper boss face and the lower boss face in the planet carrier is high in machining precision and product machining quality.

Description

Technical Field

[0001] The utility model relates to a cutting tool, in particular to a device for processing upper and lower convex surfaces in a planetary frame. Background Art

[0002] In the field of loader manufacturing, the gearbox, as an important component of the loader, will have a great impact on the overall stability of the loader, and the planetary carrier is an important component of the gearbox. The quality of the planetary carrier directly affects the overall performance of the gearbox. At present, the upper and lower boss surfaces of the planetary carrier are processed on the existing Y52 vertical milling machine and other processing equipment, and the end mill is generally used for milling. The disadvantages of using the end mill are: the plane roughness of the milled upper and lower boss surfaces is poor, and the parallelism of the upper and lower boss surfaces is poor, resulting in the dimensional accuracy and geometric tolerance accuracy of the upper and lower boss surfaces in the planetary carrier failing to meet the requirements of the drawings, affecting the production quality of the product. Utility Model Content

[0003] The purpose of the utility model is to provide a device for processing upper and lower convex surfaces in a planetary carrier in view of the shortcomings of the above-mentioned prior art. The device for processing upper and lower convex surfaces in a planetary carrier has high processing accuracy and high product processing quality.

[0004] The technical solution of the upper and lower boss surface processing device in the planetary carrier of the utility model includes a tool and a tool holder, the tool includes a scraper, the tool holder includes a clamping rod, the clamping rod includes a working end axially corresponding to the corresponding inner hole of the workpiece, and a driving connection end connected to the working end, the working end is provided with a clamping device, the scraper corresponds to the corresponding boss surface of the workpiece and is installed on the working end of the clamping rod through the clamping device transversely to the clamping rod.

[0005] The clamping device comprises a mounting hole radially arranged at the working end of the clamping rod, and a threaded hole arranged on the end surface of the working end of the clamping rod and corresponding to the mounting hole. The scraper is fixedly connected to the mounting hole by a fastener through the threaded hole.

[0006] The cross-section of the mounting hole is in a rhombus or rectangle shape.

[0007] The scraper comprises an upper and a lower blade which correspond to the upper and lower boss surfaces in the workpiece respectively.

[0008] The upper and lower blades are symmetrically arranged.

[0009] The upper and lower blades are respectively provided with a cone angle with the horizontal plane.

[0010] The utility model has high machining accuracy and reliability for machining the upper and lower convex surfaces in the planetary frame, which can ensure that the size accuracy and shape and position tolerance accuracy of the upper and lower convex surfaces in the planetary frame meet the requirements of the drawings, thereby relatively improving the product quality of the loader. The utility model has a simple structure, is easy to process and operate, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the general assembly structure of the utility model;

[0012] Figure 2 This is a cross-sectional view of the clamping rod structure of the utility model;

[0013] Figure 3 This is a view of one end of the scraper of the utility model;

[0014] Figure 4 for Figure 3 Section view along line AA. DETAILED DESCRIPTION

[0015] In order to better understand the technical solution of the present invention, the present invention is now clearly and completely described through embodiments in combination with the accompanying drawings.

[0016] See also Figure 1 to Figure 4 The upper and lower boss surface processing device of the planet carrier of the utility model comprises a clamping rod 1 for clamping a tool, a tool, and a clamping device, etc., which are arranged vertically or perpendicularly to the upper and lower boss surfaces of the workpiece 12. In this example, the workpiece is the planet carrier.

[0017] The clamping rod 1 includes a driving connection end 2 and a clamping working end 4. The outer diameter of the clamping working end 4 is smaller than the inner diameter of the inner hole 5 of the upper and lower boss surfaces of the workpiece 12, so as to form a clearance fit with the inner hole 5 of the workpiece. The clamping working end 4 can extend through the inner hole 5 of the workpiece 12 into the inner space between its upper and lower boss surfaces.

[0018] The clamping device includes a mounting hole 6, a threaded hole 7, and a bolt 8 corresponding to the threaded hole 7, which are provided in the radial direction of the clamping working end 4 of the clamping rod 1. The mounting hole 6 can be a through hole with a square cross-section, and the mounting hole 6 is adapted to the clamping rod or the handle of the corresponding scraper. The threaded hole 7 is provided on the lower end surface of the clamping working end 4 of the clamping rod, and the axial threaded hole 7 is connected with the radial threaded hole.

[0019] The tool is a scraper 9 with double blades. The upper and lower blades of the scraper 9 can be symmetrical to each other. The upper blade 10 and the lower blade 11 of the scraper 9 correspond to the upper boss surface 13 and the lower boss surface 14 in the workpiece 12 respectively.

[0020] The two blades of the scraper are respectively provided with an inverted cone angle a with the horizontal plane, and the angle of the inverted cone angle a can be 1-10 degrees. An R transition is provided between the two blades of the scraper, and the transition arc R can be 10-30 degrees, which is convenient for the discharge of iron chips during processing and can better ensure the roughness of the processed surface.

[0021] The connection part of the driving connection end 2 of the clamping rod 1 is arranged to have an outer Morse 4# taper, and a threaded hole 3 is provided on the end surface of the driving connection end 2.

[0022] When in use, the driving connection end 2 of the clamping rod 1 is inserted into the inner hole of the clamping rod with a Morse 4# taper of a processing machine tool such as a Y52 vertical milling machine through the outer circle Morse 4# taper, and the outer thread of the machine tool fixed clamping rod is screwed into the threaded hole 3 of the clamping rod 1, and the clamping rod 1 is fixed on the machine tool. The workpiece 12 is fixed on the machine tool workbench, and the clamping working end of the clamping rod 1 is inserted into the inner hole 5 of the workpiece and extends between the upper and lower boss surfaces of the space inside the workpiece 12. The scraper 9 is installed into the square mounting hole of the clamping rod 1 through one end of its handle, and is screwed into the threaded hole 7 of the clamping rod 1 with a bolt 8, and the scraper 9 is locked and fixed to the clamping working end of the clamping rod. Start the Y52 vertical milling machine, raise the clamping rod 1 until the upper blade of the scraper contacts the upper boss surface of the workpiece to be processed, and then the upper boss surface of the workpiece can be processed. Lower the clamping rod 1 until the lower blade of the scraper contacts the lower boss surface of the workpiece to be processed, and then the lower boss surface of the workpiece can be processed.

[0023] The utility model sets the clamping tool holder in a manner that is perpendicular to the processing convex surface in the workpiece, and sets the tool in a scraper type. The knife line of the scraper blade is horizontal or perpendicular to the rotation axis of the clamping rod. The clamping rod and its tool are directly inserted into the upper and lower convex surfaces by using the inherent inner hole of the workpiece, and the rotating scraper knife line acts on the entire plane wall of the workpiece to perform the processing. The clamping structure and method, processing method, etc. are more reasonable. The upper and lower convex surfaces in the workpiece can be clamped and processed at one time, ensuring that the dimensional accuracy and shape and position tolerance accuracy of the upper and lower convex surfaces in the workpiece meet the requirements of the drawings, the tool is easy to load and unload, the processing quality is stable and reliable, and the processing efficiency is high.

Claims

1. A device for processing upper and lower boss surfaces in a planetary carrier, comprising a tool and a tool holder, characterized in that: The tool includes a scraper, the tool holder includes a clamping rod, the clamping rod includes a working end axially corresponding to the corresponding inner hole of the workpiece, and a driving connection end connected to the working end, the working end is provided with a clamping device, the scraper corresponds to the corresponding boss surface of the workpiece and is installed on the working end of the clamping rod through the clamping device transversely to the clamping rod.

2. The device for processing the upper and lower boss surfaces in a planetary carrier according to claim 1, characterized in that: The clamping device comprises a mounting hole radially arranged at the working end of the clamping rod, and a threaded hole arranged on the end surface of the working end of the clamping rod and corresponding to the mounting hole. The scraper is fixedly connected to the mounting hole by a fastener through the threaded hole.

3. The device for processing the upper and lower boss surfaces in a planetary carrier according to claim 2, characterized in that: The cross-section of the mounting hole is in a rhombus or rectangle shape.

4. The device for processing upper and lower boss surfaces in a planetary carrier according to claim 1, characterized in that: The scraper comprises an upper and a lower blade which correspond to the upper and lower boss surfaces in the workpiece respectively.

5. The device for processing the upper and lower boss surfaces in a planetary carrier according to claim 4, characterized in that: The upper and lower blades are symmetrically arranged.

6. The device for processing the upper and lower boss surfaces in a planetary carrier according to claim 4 or 5, characterized in that: The upper and lower blades are respectively provided with a cone angle with the horizontal plane.

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