Inner circle boring cutter for differential case

Abstract

The utility model discloses a differential case inner circle boring cutter which comprises a sleeve rod and a telescopic rod, a center hole is formed in the sleeve rod, the telescopic rod is arranged in the center hole and stretches back and forth along the center hole, an adapting groove is formed in the tail end of the sleeve rod, a cutter head is rotationally connected in the adapting groove through a pin shaft, and a telescopic connecting rod is hinged to the cutter head. The telescopic connecting rod is hinged to the telescopic rod, the tool bit stretches out and retracts into the transfer groove of the sleeve rod through stretching and retracting of the telescopic rod, the tool bit is detachably provided with a blade, and the initial end of the telescopic rod is connected with a telescopic hydraulic cylinder. The tool bit of the tool can stretch out and retract into the adapting groove of the sleeve rod, during machining, the tool stretches out after being placed in the differential case, the tool can be conveniently placed in, meanwhile, different tool bits and blades can be disassembled and placed, and the tool is suitable for boring machining of inner circles of various differential cases.

Description

Technical Field

[0001] The utility model relates to the technical field of boring tools, in particular to a differential case inner circle boring tool. Background Art

[0002] like Figure 1 As shown, the existing differential case includes a housing 1, a central shaft hole 2 is provided in the center of the housing, and an internal cavity is provided inside the central shaft hole. During processing, the inner circle of the central shaft hole in the differential case needs to be bored. The existing technical means is to use Figure 2 The tool shown is placed eccentrically into the center axis hole, and then the center is reset and the workpiece is rotated for processing.

[0003] However, this method can only process workpieces that can fit the tool and fit the inner circle of the center axis hole. Once the tool length required by the workpiece is greater than the center axis hole diameter, the tool cannot be inserted for processing. Utility Model Content

[0004] In order to solve the above technical problems, the utility model designs a differential case inner circle boring tool.

[0005] The utility model adopts the following technical solutions:

[0006] A differential case internal boring tool comprises a sleeve rod and a telescopic rod. A center hole is provided in the sleeve rod, and a telescopic rod is provided in the center hole, which is telescopically extendable back and forth along the center hole. A transfer groove is provided on the end of the sleeve rod, and a cutter head is connected to the transfer groove by rotating through a pin shaft. A telescopic connecting rod is hinged on the cutter head, and the telescopic connecting rod is hinged to the telescopic rod. The cutter head is extended and retracted into the transfer groove of the sleeve rod by the extension and retraction of the telescopic rod. The cutter head is detachably mounted with a blade, and the initial end of the telescopic rod is connected to a telescopic hydraulic cylinder.

[0007] Preferably, the telescopic connecting rod is an arc-shaped connecting rod.

[0008] Preferably, the telescopic rod is connected to the output end of the telescopic hydraulic cylinder via a coupling.

[0009] Preferably, a jet channel is provided at the center of the telescopic rod, a jet inlet is correspondingly opened on the telescopic rod, the jet inlet is connected to the jet pipe, and a jet hole is provided at the end of the telescopic rod, which is connected to the jet inlet through the jet channel.

[0010] Preferably, a sleeve rod mounting seat is fixedly connected to the sleeve rod, and the sleeve rod mounting seat is used for being installed on a machine tool.

[0011] Preferably, a hydraulic cylinder mounting seat is fixedly connected to the telescopic hydraulic cylinder, and the hydraulic cylinder mounting seat is used for being installed on a machine tool.

[0012] Preferably, the hydraulic cylinder mounting seat is provided with reinforcing ribs.

[0013] The beneficial effects of the utility model are as follows: the utility model designs a differential case inner circle boring tool, the tool head of the tool can be extended and retracted into the adapter groove of the sleeve rod, during processing, the tool is placed inside the differential case and then extended, which is convenient for inserting the tool, and different tool heads and blades can be disassembled and placed, which is suitable for various differential case inner circle boring processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural diagram of an existing differential case;

[0015] Figure 2 It is a structural schematic diagram of an existing differential case boring tool;

[0016] Figure 3 It is a structural schematic diagram of the utility model;

[0017] Figure 4 This is a schematic diagram of the internal structure of the guide rod part of the utility model;

[0018] In the figure: 1. shell, 2. center axis hole, 3. sleeve rod, 4. telescopic rod, 5. cutter head, 6. blade, 7. telescopic connecting rod, 8. telescopic hydraulic cylinder, 9. coupling, 10. jet tube, 11. sleeve rod mounting seat, 12. hydraulic cylinder mounting seat, 13. reinforcing rib, 14. adapter groove, 15. jet air inlet. DETAILED DESCRIPTION

[0019] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings:

[0020] Example: Figure 3-Figure 4 As shown, a differential case internal boring tool includes a sleeve rod 3 and a telescopic rod 4. A center hole is provided in the sleeve rod, and a telescopic rod is provided in the center hole, which is telescopically extended back and forth along the center hole. A transfer groove 14 is provided on the end of the sleeve rod, and a cutter head 5 is connected to the transfer groove by rotating through a pin shaft. A telescopic connecting rod 7 is hinged on the cutter head, and the telescopic connecting rod is hinged to the telescopic rod. The cutter head is extended and retracted into the transfer groove of the sleeve rod by extending and retracting the telescopic rod. The cutter head is detachably mounted with a blade 6, and the initial end of the telescopic rod is connected to a telescopic hydraulic cylinder 8.

[0021] The telescopic connecting rod is an arc-shaped connecting rod. It is connected to the output end of the telescopic hydraulic cylinder via a coupling 9. A jet channel is provided at the center of the telescopic rod, along with a corresponding jet inlet, which is connected to an air jet pipe 10. An air jet hole is provided at the end of the telescopic rod, which is connected to an air jet inlet 15 via the jet channel.

[0022] A sleeve rod mounting seat 11 is fixedly connected to the sleeve rod, and the sleeve rod mounting seat is used for being installed on a machine tool.

[0023] The telescopic hydraulic cylinder is fixedly connected with a hydraulic cylinder mounting seat 12, which is used for mounting on a machine tool. A reinforcing rib 13 is provided on the hydraulic cylinder mounting seat.

[0024] The utility model designs a differential case inner circle boring tool. The cutter head of the tool can be extended and retracted into the adapter groove of the sleeve rod. During processing, the tool is placed inside the differential case and then extended, which is convenient for inserting the tool. At the same time, different cutter heads and blades can be disassembled and placed, which is suitable for boring processing of various differential case inner circles.

[0025] The embodiment described above is only a preferred solution of the present invention and does not limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A differential case internal boring tool, characterized in that: It includes a sleeve rod and a telescopic rod. A center hole is provided in the sleeve rod, and a telescopic rod is provided in the center hole. It can be extended and retracted back and forth along the center hole. A transfer groove is provided on the end of the sleeve rod. A cutter head is connected to the transfer groove through a pin shaft. A telescopic connecting rod is hinged on the cutter head. The telescopic connecting rod is hinged to the telescopic rod. The cutter head is extended and retracted into the transfer groove of the sleeve rod through the extension and retraction of the telescopic rod. The cutter head is detachably equipped with a blade. The initial end of the telescopic rod is connected to a telescopic hydraulic cylinder.

2. A differential case internal boring tool according to claim 1, characterized in that: The telescopic connecting rod is an arc-shaped connecting rod.

3. The differential case internal boring tool according to claim 1, characterized in that: The telescopic rod is connected to the output end of the telescopic hydraulic cylinder through a coupling.

4. The differential case internal boring tool according to claim 1, characterized in that: The center of the telescopic rod is provided with an air jet channel, the telescopic rod is correspondingly provided with an air jet inlet, the air jet inlet is connected to the air jet pipe, and the end of the telescopic rod is provided with an air jet hole, which is connected to the air jet inlet through the air jet channel.

5. The differential case internal boring tool according to claim 1, characterized in that: The sleeve rod is fixedly connected with a sleeve rod mounting seat, and the sleeve rod mounting seat is used for being mounted on a machine tool.

6. The differential case internal boring tool according to claim 1, characterized in that: The telescopic hydraulic cylinder is fixedly connected to a hydraulic cylinder mounting seat, and the hydraulic cylinder mounting seat is used for being mounted on a machine tool.

7. The differential case internal boring tool according to claim 6, characterized in that: The hydraulic cylinder mounting seat is provided with reinforcing ribs.

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