Precise burr polishing tool for double-flow-channel turbine shell partition wall

Abstract

The utility model relates to an accurate burr polishing tool for a double-flow-channel turbine shell partition wall. Comprising a positioning sleeve, a rotating shaft, a scraper, a connecting shaft and an electric / pneumatic tool, the positioning sleeve is arranged on the rotating shaft in a sleeving mode, the rotating shaft can rotate in the positioning sleeve, the scraper is arranged at one end of the rotating shaft, the connecting shaft is arranged at the other end of the rotating shaft, the positioning sleeve is installed at a positioning opening of the double-flow-channel turbine shell, and the electric / pneumatic tool is installed on the rotating shaft. The positioning sleeve is matched with the double-flow-channel turbine shell, the scraper makes contact with partition wall burrs of the double-flow-channel turbine shell, the connecting shaft is used for being connected with the electric / pneumatic tool, and the electric / pneumatic tool is used for driving the rotating shaft to rotate. The position of the scraper is controlled through the positioning sleeve, the electric pistol drill is used for driving the rotating shaft to achieve the polishing work of the scraper, the polishing range can be accurately controlled, the polishing efficiency can be improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model belongs to a sand core grinding tool used for producing a turbine shell, in particular to a tool for accurately grinding burrs of a partition wall of a double-flow channel turbine shell. Background Art

[0002] In order to further improve the performance of automobile engines, many turbochargers currently use a dual-channel design for their turbine housings. Compared with single-channel turbochargers, dual-channel designs can more efficiently recover energy from exhaust gas, reduce parasitic reverse losses, and improve response speed at low engine speeds. The dual-channel design consists of two sand cores, so burrs will be generated at the tip of the partition wall between the two channels and need to be polished. In order to maximize the performance of the turbocharger, the closer the distance from the impeller to the tip of the partition wall, the better. Therefore, customers have strict requirements on the size of the tip of the partition wall, and machining and cutting are not allowed. Currently, grinding is done manually. Since the burr is located inside the casting, the grinding status cannot be seen during the grinding process, and the grinding work can only be completed by feeling. This will result in more grinding in some places and less grinding in others, and the rough surface above and below the partition wall will also be polished during the grinding process, affecting the size of the casting. Summary of the invention

[0003] The utility model provides a double-channel turbine housing partition wall burr precision grinding tool, in order to solve the technical problem of inadequate grinding mentioned in the background technology, to achieve precise grinding.

[0004] The technical solution of the utility model is as follows: a tool for precisely grinding burrs on a partition wall of a dual-channel turbine shell, comprising: a positioning sleeve, a rotating shaft, a scraper, a connecting shaft and an electric / pneumatic tool, the positioning sleeve being mounted on the rotating shaft and the rotating shaft being able to rotate within the positioning sleeve, the scraper being arranged at one end of the rotating shaft, the connecting shaft being arranged at the other end of the rotating shaft, the positioning sleeve being installed at a positioning port of the dual-channel turbine shell, the positioning sleeve being adapted to the dual-channel turbine shell, the scraper being in contact with the partition wall burrs of the dual-channel turbine shell, the connecting shaft being used to connect to the electric / pneumatic tool, and the electric / pneumatic tool being used to drive the rotating shaft to rotate.

[0005] Furthermore, the scraper is fixed to one end of the connecting shaft by a fixing screw, and the end of the scraper is provided with a sharp angle structure for cutting burrs.

[0006] Furthermore, a positioning hole is provided in the middle of the scraper and one end of the rotating shaft, and the positioning hole in the middle of the scraper and the positioning hole at one end of the rotating shaft are positioned by a positioning pin.

[0007] Furthermore, the connecting shaft is a hexagonal connecting block, the electric / pneumatic tool is an electric pistol drill, and the electric pistol drill is connected to the hexagonal connecting block via a hexagonal connecting interface.

[0008] The beneficial effects of the utility model are as follows: the utility model uses a positioning sleeve to control the position of the scraper, and uses an electric pistol drill to drive the rotating shaft to realize the grinding work of the scraper, which can not only accurately control the grinding range, but also improve the grinding efficiency and reduce the labor intensity of workers. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] Figure 2 It is a use schematic diagram of the utility model. DETAILED DESCRIPTION

[0011] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. The described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0012] In an embodiment of the present utility model, Figure 1 The schematic diagram is provided according to the specific structure of a double-channel turbine housing partition wall burr precision grinding tool of the utility model. Figure 1 As shown, the utility model specifically includes:

[0013] A positioning sleeve 1, a rotating shaft 2, a scraper 3, a connecting shaft 6 and an electric / pneumatic tool, wherein the positioning sleeve 1 is sleeved on the rotating shaft 2 and the rotating shaft 2 can rotate in the positioning sleeve 1, the scraper 3 is arranged at one end of the rotating shaft 2, and the connecting shaft 6 is arranged at the other end of the rotating shaft 2. The positioning sleeve 1 is installed at the positioning port of a dual-channel turbine shell, the positioning sleeve 1 is adapted to the dual-channel turbine shell, the scraper 3 contacts the burr of the partition wall of the dual-channel turbine shell, the connecting shaft 6 is used to connect with the electric / pneumatic tool, and the electric / pneumatic tool is used to drive the rotating shaft 2 to rotate.

[0014] In an embodiment of the present utility model, the scraper 3 is fixed to one end of the connecting shaft 6 by a fixing screw 4, and the end of the scraper 3 is provided with a sharp angle structure for cutting burrs.

[0015] In one embodiment of the utility model, a positioning hole is provided in the middle of the scraper 3 and one end of the rotating shaft 2 , and the positioning hole in the middle of the scraper 3 and the positioning hole at one end of the rotating shaft 2 are positioned by a positioning pin 5 .

[0016] In one embodiment of the present utility model, the connecting shaft 6 is a hexagonal connecting block, the electric / pneumatic tool is an electric pistol drill, and the electric pistol drill is connected to the hexagonal connecting block via a hexagonal connecting interface.

[0017] The utility model is a burr grinding tool for partition walls, comprising a positioning sleeve 1, a rotating shaft 2 and a scraper 3. The positioning sleeve 1 is used to fix the grinding position, which is specifically determined according to the workpiece to be ground. Before grinding, a suitable positioning sleeve 1 is selected according to the size of the workpiece to be ground. The rotating shaft 2 is inserted in the center of the positioning sleeve 1, and the tail end of the rotating shaft 2 is a hexagonal structure, which is convenient for connecting an electric tool to facilitate driving rotation. The head of the rotating shaft 2 has a threaded hole for installing the scraper 3. The scraper 3 is fixed on the rotating shaft 2, and is made of wear-resistant material. The tip of the scraper 3 has a sharp angle structure for cutting burrs. The length of the tip of the scraper 3 is replaced according to the casting to be ground.

[0018] like Figure 2 As shown, 7 is a double-channel turbine shell, 8 is a burr, and the use process of the grinding tool of the utility model is: when using it, first put the scraper 3 at the position to be ground, then put the positioning sleeve 1 into the positioning port of the casting to fix the position of the scraper 3, and then start the electric pistol drill to drive the rotating shaft 2 to rotate, and the scraper 3 fixed on the rotating shaft 2 rotates in conjunction with the grinding of the burrs on the partition wall, and finally after the grinding is completed, first take out the positioning sleeve 1, and then take out the entire grinding tool to grind the next casting.

[0019] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A double-channel turbine housing partition wall burr precision grinding tool, characterized in that: include: A positioning sleeve (1), a rotating shaft (2), a scraper (3), a connecting shaft (6), and an electric / pneumatic tool, wherein the positioning sleeve (1) is sleeved on the rotating shaft (2) and the rotating shaft (2) is capable of rotating in the positioning sleeve (1), the scraper (3) is arranged at one end of the rotating shaft (2), the connecting shaft (6) is arranged at the other end of the rotating shaft (2), the positioning sleeve (1) is installed at the positioning opening of a double-flow-channel turbine shell, the positioning sleeve (1) is adapted to the double-flow-channel turbine shell, the scraper (3) contacts the burr of the partition wall of the double-flow-channel turbine shell, the connecting shaft (6) is used to be connected to the electric / pneumatic tool, and the electric / pneumatic tool is used to drive the rotating shaft (2) to rotate.

2. The double-channel turbine housing partition wall burr precision grinding tool as claimed in claim 1, characterized in that: The scraper (3) is fixed to one end of the connecting shaft (6) via a fixing screw (4), and the end of the scraper (3) is provided with a sharp angle structure for cutting burrs.

3. The double-channel turbine housing partition wall burr precision grinding tool as claimed in claim 1 is characterized in that: A positioning hole is provided in the middle of the scraper (3) and at one end of the rotating shaft (2), and the positioning hole in the middle of the scraper (3) and the positioning hole at one end of the rotating shaft (2) are positioned by a positioning pin (5).

4. The double-channel turbine housing partition wall burr precision grinding tool as claimed in claim 1, characterized in that: The connecting shaft (6) is a hexagonal connecting block, the electric / pneumatic tool is an electric pistol drill, and the electric pistol drill is connected to the hexagonal connecting block via a hexagonal connecting interface.

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