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CN-122007461-A - Inner ball turning tool for differential mechanism shell

CN122007461ACN 122007461 ACN122007461 ACN 122007461ACN-122007461-A

Abstract

The invention relates to the technical field of numerical control machining equipment, in particular to an inner ball turning tool for a differential mechanism shell, which comprises a main body unit, an adjusting unit, a cooling unit and a control unit, wherein the adjusting unit comprises a driving mechanism arranged on a tool apron, a transmission mechanism arranged on the tool apron and a tool bar body, a fixing mechanism arranged on a corner tool holder and used for fixing a blade body; through adopting the blade design of angularly adjustable, promoted the suitability and the simple operation of cutter, but the direct adoption major diameter cutter arbor design can further promote the cutting rigidity, avoid vibration and the deformation in the high-speed cutting process, ensured machining precision, reduced the cutter simultaneously and broken the risk of damaging, reduced manufacturing cost, utilize cooling body and brake mechanism, make the accurate injection of coolant liquid to the processing position, reduce cutter wearing and tearing and work piece heat altered shape, further ensured processingquality and cutter life, avoided the coolant liquid extravagant simultaneously, can further reduce manufacturing cost.

Inventors

  • GU WEILIANG
  • CHENG LIN

Assignees

  • 南京肯迈得机床制造有限公司

Dates

Publication Date
20260512
Application Date
20260325

Claims (10)

  1. 1. An internal ball turning tool for a differential case comprises a main body unit (100), and is characterized by comprising a tool holder (101), a tool holder body (102) arranged on the tool holder (101), a corner tool holder (103) arranged on the tool holder body (102), and a blade body (104) arranged on the corner tool holder (103), The adjusting unit (200) comprises a driving mechanism (201) arranged on the tool apron (101), a transmission mechanism (202) arranged on the tool apron (101) and the tool bar body (102), a fixing mechanism (203) arranged on the corner tool holder (103) and used for fixing the tool bar body (104), and a transfusion tube (204) arranged on the tool apron (101) and used for conveying hydraulic solution to the interior of the tool apron (101), wherein the driving mechanism (201) and the transmission mechanism (202) are used for driving the fixing mechanism (203) to move so as to realize ninety-degree rotation adjustment of the tool bar body (104), and the adjusting mechanism (203) is also used for driving the tool bar body (104) to reset under the decompression state of the driving mechanism (201) and the transmission mechanism (202); The cooling unit (300) comprises a cooling mechanism (301) arranged on the corner tool holder (103) and used for spraying cooling liquid to the machining position of the differential case in a machining state, and a braking mechanism (302) arranged on the corner tool holder (103), wherein the braking mechanism (302) is used for adjusting the opening and closing of the cooling mechanism (301) according to the rotation state of the blade body (104).
  2. 2. The internal ball turning tool for the differential case according to claim 1, wherein the driving mechanism (201) comprises a first piston (2014) sleeved on the inner wall of the tool post (101), one side of the first piston (2014) is fixedly connected with a push rod (2012), and one end of the push rod (2012) far away from the first piston (2014) movably passes through the tool post (101) and is fixedly connected with a push plate (2011).
  3. 3. The inner ball turning tool for the differential case according to claim 2, wherein a return spring (2013) is fixedly connected to one side, close to the push rod (2012), of the push plate (2011), a baffle plate (2017) is fixedly connected to one end, away from the push plate (2011), of the return spring (2013), one side, fixedly connected to the surface of the tool apron (101), of the baffle plate (2017), a strip-shaped groove (2015) is formed in the surface of the baffle plate (2017), a limiting block (2016) used for being in sliding fit with the strip-shaped groove (2015) is fixedly connected to the surface of the push rod (2012), and the limiting block (2016) is further used for being in butt fit with the baffle plate (2017).
  4. 4. The internal ball turning tool for the differential case according to claim 1, wherein the transmission mechanism (202) comprises a piston two (2021) arranged on one side of the piston one (2014) away from the push rod (2012), and the surface of the piston two (2021) is sleeved on the inner wall of the tool holder (101).
  5. 5. The internal ball turning tool for the differential case according to claim 4, wherein a piston rod (2022) is fixedly connected to one side of the piston two (2021) away from the piston one (2014), one end of the piston rod (2022) away from the piston two (2021) movably penetrates through the tool holder (101) and the tool holder body (102) and extends to the inner wall of the corner tool holder (103), and one end of the piston rod (2022) extending to the corner tool holder (103) is fixedly connected with a rotary joint (2023) used for being connected with a fixing mechanism.
  6. 6. The internal ball turning tool for differential housing according to claim 1, wherein the fixing mechanism (203) comprises a blade fixing head (2031) rotatably connected to an inner wall of the swivel joint (2023), and one side of the blade fixing head (2031) is fixedly connected to a fixed end of the blade body (104).
  7. 7. The internal ball turning tool for the differential case according to claim 6, wherein two sides of the blade fixing head (2031) are rotatably connected to the inner wall of the corner tool holder (103) through a first fixed shaft (2032), a first torsion spring (2033) is fixedly connected to the surface of the first fixed shaft (2032), and one end, far away from the first fixed shaft (2032), of the first torsion spring (2033) is fixedly connected to the inner wall of the corner tool holder (103).
  8. 8. The internal ball turning tool for the differential case according to claim 1, wherein the cooling mechanism (301) comprises a sealing barrel (3011) fixedly connected with the inner wall of the corner tool holder (103), the output end of the sealing barrel (3011) is fixedly connected with a spray head (3012), the input end of the sealing barrel (3011) is fixedly connected with a liquid supply pipe (3013), and one end, far away from the sealing barrel (3011), of the liquid supply pipe (3013) fixedly penetrates through the tool bar body (102) and the tool holder (101) and extends to the outside of the tool holder (101).
  9. 9. The inner ball turning tool for the differential case, according to claim 8, characterized in that a sealing plate (3014) is arranged in the sealing cylinder (3011), two sides of the sealing plate (3014) are rotatably connected to the inner wall of the sealing cylinder (3011) through a second fixing shaft (3015), a second torsion spring (3016) is fixedly connected to the surface of the second fixing shaft (3015), and one end, far away from the second fixing shaft (3015), of the second torsion spring (3016) is fixedly connected to the inner wall of the sealing cylinder (3011).
  10. 10. The inner ball turning tool for the differential case according to claim 1, wherein the braking mechanism (302) comprises a rubber sleeve (3021) fixedly connected to one side of a sealing barrel (3011), a cam (3022) used for being in butt fit with a blade fixing head (2031) is arranged in the rubber sleeve (3021), an elastic telescopic rod (3023) is fixedly connected to one side of the cam (3022) close to the sealing barrel (3011), the fixed end of the elastic telescopic rod (3023) is fixedly connected to one side of the sealing barrel (3011) close to the rubber sleeve (3021), a push rod (3024) is fixedly connected to the surface of the elastic telescopic rod (3023), and one end of the push rod (3024) away from the elastic telescopic rod (3023) movably penetrates through the sealing barrel (3011) and extends into the sealing barrel (3011) for butt fit with a sealing plate (3014).

Description

Inner ball turning tool for differential mechanism shell Technical Field The invention relates to the technical field of numerical control machining equipment, in particular to an inner ball turning tool for a differential case. Background In the numerical control machining field, the differential housing is used as a core bearing and transmission part of an automobile transmission system, and the machining precision of an internal spherical hole site directly determines the transmission efficiency, the running stability and the service life, so that extremely high requirements are put on the structural design, the adaptation capability and the operation convenience of a machining tool, and at present, the main tools for circular machining in the differential housing in the industry are mainly an eagle hook tool and a gooseneck tool; Because of the special structure of the differential mechanism shell, the aperture of the inner spherical hole position needs to be larger, the aperture of the outer inlet of the cutter extending into the shell is smaller, the structural characteristic of 'outer small and inner large' is formed, for the eagle hook turning tool, in order to adapt to the structure, the cutter head needs to be designed into a fixed bending form to bypass the inlet to limit the cutter head extending into the shell, however, the fixed bending structure forms strict limitation on the cutter bar size, so that the diameter of the cutter bar needs to be greatly reduced in order to ensure that the cutter can smoothly pass through a narrow inlet, the cutter bar is possibly insufficient in rigidity, vibration and deformation are easily generated in the high-speed cutting process, the machining precision is easily affected, the cutter is easily broken, and the production cost is increased; While the gooseneck knife is structurally optimized, the gooseneck knife is required to be matched with complex feeding action and rotation track when being stretched into the differential mechanism shell, the operation flow is relatively complicated, the control precision requirement on processing equipment is relatively high, the equipment debugging cost and the operation threshold are improved, meanwhile, in order to meet the stretching requirement of a narrow inlet, the gooseneck knife is also required to be designed by adopting a small-diameter cutter bar, and the problem of insufficient cutting rigidity exists; In view of this, we propose an internal ball turning tool for differential housings. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides the inner ball turning tool for the differential case, which can effectively solve the problems that the hawk-hook turning tool and the gooseneck knife in the prior art are limited by the structure of 'small outside and big inside' of the differential case, and the cutter bar has insufficient rigidity, complex operation and high equipment debugging cost. In order to achieve the above purpose, the invention is realized by the following technical scheme: the invention provides an internal ball turning tool for a differential mechanism shell, which comprises a main body unit, a cutter bar body arranged on the cutter bar, a corner cutter holder arranged on the cutter bar body, and a blade body arranged on the corner cutter holder, wherein the internal ball turning tool comprises, The adjusting unit comprises a driving mechanism arranged on the tool apron, a transmission mechanism arranged on the tool apron and the tool bar body, a fixing mechanism arranged on the corner tool holder and used for fixing the blade body, and a transfusion tube arranged on the tool apron and used for conveying hydraulic solution to the interior of the tool apron, wherein the driving mechanism and the transmission mechanism are used for driving the fixing mechanism to move so as to realize ninety-degree rotation adjustment of the blade body, and the adjusting mechanism is also used for driving the blade body to reset in a decompression state of the driving mechanism and the transmission mechanism; The cooling unit comprises a cooling mechanism arranged on the corner tool holder and used for spraying cooling liquid to the machining position of the differential mechanism shell in a machining state, and a braking mechanism arranged on the corner tool holder and used for adjusting the opening and closing of the cooling mechanism according to the rotation state of the blade body. Further, the driving mechanism comprises a first piston sleeved on the inner wall of the tool apron, one side of the first piston is fixedly connected with a push rod, and one end, far away from the first piston, of the push rod movably penetrates through the tool apron and is fixedly connected with a push plate. Further, push pedal is close to push rod one side fixedly connected with reset spring, and reset spring keeps away from push pedal one end fixedly connected with baffle, baffle