Numerical control lathe for universal joint pin of automobile differential mechanism

Abstract

The invention provides an automobile differential universal joint pin numerical control lathe which comprises a lathe body, and a clamping mechanism and an inner and outer side machining mechanism are arranged on the lathe body. The inner and outer side machining mechanism comprises a rotating sleeve b, a rotating shaft b and a rotating shaft b, wherein the rotating sleeve b is rotationally arranged on the lathe body; and the outer side machining tool is mounted on the rotating sleeve b. The rotating driving part a drives the transmission wheel to rotate, and the outer side machining tool is driven to rotate around the axis of the rotating sleeve b; a pushing plate is driven to move in the X direction, a shaft body of the cross shaft in the clamping circular truncated cone is made to make contact with an outer side machining tool, then the outer side of the shaft body of the cross shaft is machined, an inserting rod a is driven to leave an inserting groove a, an inserting rod b is inserted into an inserting groove b, at the moment, the pushing plate is driven to move in the X direction, and the shaft body of the cross shaft in the clamping circular truncated cone is made to make contact with an inner side machining tool; and then the interior of the shaft body of the cross shaft is drilled, and the differential cross shaft can be conveniently machined.

Description

Technical Field

[0001] The invention relates to the technical field of numerically controlled lathes, and in particular to a numerically controlled lathe for a cross shaft of an automobile differential. Background Art

[0002] The differential cross shaft is an important component in the automobile transmission system, usually used in the drive axle. It is located inside the differential, connecting the half-shaft gears on the left and right sides, and allows the wheels on both sides to rotate at different speeds, which is very important for each wheel to take a different path length when the vehicle turns, such as Fig.14 The figure shows a schematic diagram of a differential cross shaft structure in the prior art.

[0003] Chinese patent application No. 202010154144.8 discloses a CNC lathe, whose structure includes a base, a moving component, a screw component, a chuck, a lathe body, a dust cover, a lathe tool holder, a guard plate, and a tailstock turning mechanism. A lathe body is provided on the base, and a guard plate is fixed to the lathe body. A new structural setting is adopted to hide the screw rod to prevent the screw rod from being exposed to the outside, effectively prevent the debris generated by the lathe processing and the external dust from falling into the thread groove of the screw rod, avoid the clogging of the thread groove of the screw rod, prevent the scaling of the thread groove, and make the translation of the moving component smooth and unobstructed, so that there is no need to clean and descale the screw rod, and a new structural setting is adopted through the blade mounting seat.

[0004] like Fig.14 As shown, the differential cross shaft includes a mounting seat 800, and four shaft bodies 801 are provided on the mounting seat 800. During processing, the outer side of the shaft body 801 needs to be processed, and the inner side of the shaft body 801 also needs to be drilled. However, the above-mentioned CNC lathe is not convenient for processing the inner and outer sides of the differential cross shaft. Therefore, we propose a CNC lathe for an automobile differential cross shaft. Summary of the invention

[0005] The purpose of the present invention is to address the deficiencies in the prior art and provide a CNC lathe for a cross-axis of an automobile differential. The driving wheel is driven to rotate by rotating a driving member a, and the outer processing tool is driven to rotate around the axis of a rotating sleeve b; a push plate is driven to move along the X direction, so that the shaft body of the cross-axis in the clamping truncated table contacts the outer processing tool, and then the outer side of the shaft body of the cross-axis is processed, and the insertion rod a is driven to leave the slot a, and the insertion rod b is inserted into the slot b. At this time, the push plate is driven to move along the X direction, so that the shaft body of the cross-axis in the clamping truncated table contacts the inner processing tool, and then the inside of the shaft body of the cross-axis is drilled, which is convenient for processing the differential cross-axis.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A cross-axis CNC lathe for automobile differential, comprising a lathe body, on which a clamping mechanism and an inner and outer side processing mechanism are provided;

[0008] The inner and outer processing mechanism includes: a rotating sleeve b, which is rotatably arranged on the lathe body; an outer processing tool, which is installed on the rotating sleeve b; a rotating shaft, which is rotatably arranged in the rotating sleeve b; an inner processing tool, which is installed on the rotating shaft; an adjusting drive component, which is installed on the lathe body; and a cooling mechanism is provided on the lathe body for cooling the outer processing tool and the inner processing tool.

[0009] The adjustment drive assembly includes: a guide rail a, which is installed on the lathe body; a moving plate, which is slidably arranged on the guide rail a; a support frame, which is installed on the moving plate; a transmission wheel, which is rotatably arranged on the support frame; a rotating driving member a, which is installed on the moving plate; a driving wheel, which is installed on the output end of the rotating driving member a; and a belt, wherein the transmission wheel and the driving wheel are connected via a belt drive.

[0010] A connecting rod a is installed on the rotating sleeve b, a circular plate a is installed on the connecting rod a, and an insertion rod a is installed on the circular plate a; a slot a is opened on one side of the transmission wheel; a slide plate is slidably provided on the guide rail a, a connecting frame is installed on the slide plate, the rotating shaft is rotatably arranged on the connecting frame, a circular plate b is installed on the rotating shaft, an insertion rod b is installed on the circular plate b, and a slot b is opened on the other side of the transmission wheel.

[0011] A rack block a is installed on the moving plate, a rack block b is installed on the sliding plate, a rotating driving member b is installed on the lathe body, a gear b is installed on the output end of the rotating driving member b, and the gear b is respectively meshed with the rack block a and the rack block b.

[0012] The cooling mechanism includes: a connecting sleeve a, which is arranged on the outside of the connecting rod a; a liquid inlet pipe a, which is installed on the connecting sleeve a; a liquid discharge pipe a, which is installed on the connecting sleeve a; a connecting sleeve b, which is arranged on the outside of the rotating shaft; a liquid inlet pipe b, which is installed on the connecting sleeve b; a liquid discharge pipe b, which is installed on the connecting sleeve b; a liquid supply component, which is installed on the lathe body; and a switching component, which is installed on the lathe body.

[0013] The liquid supply component includes: a cooling box, which is arranged below the lathe body; a fixed sleeve, which is installed on the lathe body and has a sliding groove inside; the liquid inlet pipe a, the liquid discharge pipe a, the liquid inlet pipe b, and the liquid discharge pipe b are connected to the fixed sleeve; and a pump, which is installed on the lathe body.

[0014] The switching assembly includes: a sliding sleeve, which is slidably arranged in the sliding groove; a mounting sleeve, two mounting sleeves are installed on both sides of the sliding sleeve; the mounting sleeve, the pump, and the cooling box are connected through a pipeline; two L-shaped grooves are provided in the sliding sleeve, and a connecting rod b is installed on the rack block a, and the connecting rod b is connected to the sliding sleeve.

[0015] A cooling groove a is provided in the outer processing tool, and a flow groove a is provided in the connecting rod a; a cooling groove b is provided in the inner processing tool, and a flow groove b is provided in the rotating shaft. The cooling groove a and the flow groove a are connected, and the cooling groove b and the flow groove b are connected.

[0016] The clamping mechanism includes: a guide rail b, which is installed on the lathe body; a movable plate, which is slidably arranged on the guide rail b; a linear driving member, which is installed on the movable plate; a pushing plate, which is installed on the output end of the linear driving member; a rotating driving member c, which is installed on the pushing plate; a rotating sleeve a, which is rotatably installed on the pushing plate, and the output end of the rotating driving member c and the rotating sleeve a are connected by a chain transmission; and a clamping round table, which is installed in the rotating sleeve a.

[0017] A fixed seat is installed on the lathe body, and a swing arm is rotatably installed on the fixed seat, and a positioning hole is opened in the swing arm; a groove is opened in the rotating sleeve a, and a limiting tooth block is arranged in the groove; the clamping round table is threadedly connected with a bolt, and a pressure block is rotatably provided at the bottom of the bolt, and a guide rod is provided on the clamping round table, and the guide rod passes through the pressure block.

[0018] The beneficial effects of the present invention are:

[0019] (1) The present invention drives the transmission wheel to rotate by rotating the driving member a, and drives the outer processing tool to rotate around the axis of the rotating sleeve b; drives the push plate to move along the X direction, so that the shaft body of the cross shaft in the clamping truncated table contacts the outer processing tool, and then processes the outer side of the shaft body of the cross shaft; the rotating driving member b drives the gear b to rotate, drives the insertion rod a to leave the slot a, and inserts the insertion rod b into the slot b, and at this time drives the push plate to move along the X direction, so that the shaft body of the cross shaft in the clamping truncated table contacts the inner processing tool, and then drills the inside of the shaft body of the cross shaft, which is convenient for processing the differential cross shaft.

[0020] (2) The present invention places the cross shaft into the clamping truncated table, and inserts the clamping block in the clamping truncated table into the clamping groove of the cross shaft mounting seat to limit and fix the cross shaft; the swing arm is swung downward to drive the push plate to move and drive the clamping truncated table to move, so that the shaft body of the cross shaft in the clamping truncated table is inserted into the positioning hole, thereby positioning the cross shaft before processing.

[0021] (3) In the present invention, when the shaft body cannot be inserted into the positioning hole due to deflection, the bolt is rotated to drive the pressure block to move downward so that the pressure block leaves the limiting tooth block. At this time, the clamping table can be rotated to adjust the angle of the shaft body of the deflected cross shaft in the clamping table so that it can be inserted into the positioning hole. Then, the bolt is rotated to drive the pressure block to move upward and press on the limiting tooth block (not shown in the figure) to limit the shaft body of the cross shaft in the clamping table.

[0022] (4) In the present invention, in the initial state, the two L-shaped grooves are connected to the liquid inlet pipe a and the liquid discharge pipe a respectively, and the pump drives the coolant in the pipe to circulate, and the coolant flow direction is: pump → pipe → mounting sleeve → L-shaped groove → liquid inlet pipe a → flow groove a → cooling groove a → flow groove a → liquid discharge pipe a → L-shaped groove → mounting sleeve → pipe → cooling box → pump, thereby cooling the outer processing tool from the inside to avoid the outer processing tool from being too high during processing, thereby extending the service life of the outer processing tool;

[0023] (5) The present invention drives the gear b to rotate by rotating the driving member b, drives the rack block a and the rack block b to move toward each other, and drives the sliding sleeve to slide in the sliding groove, so that the two L-shaped grooves are respectively connected with the liquid inlet pipe b and the liquid discharge pipe b; at this time, the flow direction of the coolant is: pump → pipeline → installation sleeve → L-shaped groove → liquid inlet pipe b → flow groove b → cooling groove b → flow groove b → liquid discharge pipe b → L-shaped groove → installation sleeve → pipeline → cooling box → pump, so that the inner processing tool is cooled from the inside to avoid excessive temperature of the inner processing tool during processing, thereby extending the service life of the inner processing tool BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2This is a schematic diagram of the structure of the fixing seat and the swing arm of the present invention;

[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of some parts of the present invention;

[0027] Figure 4 This is a schematic diagram of the structure of the liquid supply component of the present invention;

[0028] Figure 5 It is a schematic diagram of the explosion structure of the inner and outer processing mechanism of the present invention;

[0029] Figure 6 This is a schematic diagram of the structure of the fixed sleeve and the sliding sleeve of the present invention;

[0030] Figure 7 It is a schematic cross-sectional structure diagram of the inner and outer side processing mechanism of the present invention;

[0031] Figure 8 For the present invention Figure 7 The enlarged schematic diagram of point B in the middle;

[0032] Fig. 9 For the present invention Figure 7 The enlarged schematic diagram at C in the middle;

[0033] Fig.10 For the present invention Figure 7 The enlarged schematic diagram at D in the middle;

[0034] Fig.11 It is a schematic diagram of the structure of the clamping mechanism of the present invention;

[0035] Fig.12 It is an exploded schematic diagram of the clamping mechanism of the present invention;

[0036] Fig.13 This is a schematic diagram of the bolt and guide rod structure of the present invention;

[0037] Fig.14 It is a schematic diagram of the differential cross shaft structure in the prior art.

[0038] The accompanying drawings of the present application are marked as follows: 1. lathe body; 2. clamping mechanism; 201. guide rail b; 203. moving plate; 204. linear drive member; 205. pushing plate; 206. rotating drive member c; 207. rotating sleeve a; 2071. groove; 208. clamping table; 209. fixed seat; 210. swing arm; 2101. positioning hole; 211. bolt; 212. pressure block; 213. guide rod; 3. inner and outer processing mechanism; 301. rotating sleeve b; 302. outer processing tool; 3021. cooling groove a; 303. rotating shaft; 3031. flow groove b; 304. inner processing tool; 3041. cooling groove b; 305. connecting rod a; 3051. flow groove a; 306. circular plate a; 307. insert rod a; 31. adjusting drive assembly; 311. guide rail a; 312, moving plate; 313, support frame; 314, transmission wheel; 3141, slot a; 3142, slot b; 315, rotating drive member a; 316, driving wheel; 317, belt; 318, slide plate; 319, connecting frame; 320, circular plate b; 322, plug rod b; 323, rack block a; 324, rack block b; 325, rotating drive member b; 326, gear b; 4, cooling mechanism; 411, connecting sleeve a; 412, liquid inlet pipe a; 413, liquid discharge pipe a; 414, connecting sleeve b; 415, liquid inlet pipe b; 416, liquid discharge pipe b; 42, liquid supply assembly; 422, fixing sleeve; 4221, sliding groove; 43, switching assembly; 431, sliding sleeve; 4311, L-shaped groove; 432, mounting sleeve; 433, connecting rod b; 434, pipeline. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0041] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0042] Embodiment 1: Figure 1-Figure 13 As shown, this embodiment provides a cross-axis CNC lathe for automobile differential, comprising a lathe body 1, on which a clamping mechanism 2 and an inner and outer processing mechanism 3 are provided;

[0043] The inner and outer processing mechanism 3 includes: a rotating sleeve b301, which is rotatably arranged on the lathe body 1; an outer processing tool 302, which is installed on the rotating sleeve b301; a rotating shaft 303, which is rotatably arranged in the rotating sleeve b301; an inner processing tool 304, which is installed on the rotating shaft 303; an adjusting drive component 31, which is installed on the lathe body 1; a cooling mechanism 4 is provided on the lathe body 1 for cooling the outer processing tool 302 and the inner processing tool 304, and the inner processing tool 304 is a drill bit.

[0044] like Figure 1-Figure 13 As shown, the adjustment drive assembly 31 includes: a guide rail a311, which is installed on the lathe body 1; a moving plate 312, which is slidably arranged on the guide rail a311; a support frame 313, which is installed on the moving plate 312; a transmission wheel 314, which is rotatably arranged on the support frame 313; a rotating driving member a315, which is installed on the moving plate 312; a driving wheel 316, which is installed on the output end of the rotating driving member a315; and a belt 317, wherein the transmission wheel 314 and the driving wheel 316 are connected through the belt 317.

[0045] A connecting rod a305 is installed on the rotating sleeve b301, a circular plate a306 is installed on the connecting rod a305, and an insert rod a307 is installed on the circular plate a306; a slot a3141 is provided on one side of the transmission wheel 314; a slide plate 318 is slidably provided on the guide rail a311, a connecting frame 319 is installed on the slide plate 318, the rotating shaft 303 is rotatably provided on the connecting frame 319, a circular plate b320 is installed on the rotating shaft 303, an insert rod b322 is installed on the circular plate b320, and a slot b3142 (not marked in the figure) is provided on the other side of the transmission wheel 314. A fixed seat 209 is installed on the fixed seat 209, and a swing arm 210 is rotatably installed on the fixed seat 209, and a positioning hole 2101 is provided in the swing arm 210; it should be noted that: when the swing arm 210 is swung downward, the positioning hole 2101 is coaxial with the rotating sleeve b301 and the rotating shaft 303;

[0046] In this embodiment, the cross shaft is placed in the clamping truncated table 208, and the clamping block in the clamping truncated table 208 is inserted into the clamping slot of the cross shaft mounting seat 800 to limit and fix the cross shaft; the swing arm 210 is swung downward to drive the push plate 205 to move and drive the clamping truncated table 208 to move, so that the shaft body 801 of the cross shaft in the clamping truncated table 208 is inserted into the positioning hole 2101, and the cross shaft before processing is positioned;

[0047] When the shaft body 801 cannot be inserted into the positioning hole 2101 due to deflection, the bolt 211 is rotated to drive the pressing block 212 to move downward, so that the pressing block 212 leaves the limiting tooth block. At this time, the clamping table 208 can be rotated to adjust the angle of the shaft body 801 of the cross shaft deflected in the clamping table 208 so that it can be inserted into the positioning hole 2101. Then, the bolt 211 is rotated to drive the pressing block 212 to move upward and press on the limiting tooth block (not shown in the figure) to limit the shaft body 801 of the cross shaft in the clamping table 208.

[0048] It should be noted that a tooth block may also be provided on the pressing block 212 , and the pressing block 212 is pressed on the limiting tooth block to enhance the limiting effect.

[0049] like Figure 1-Figure 13 As shown, a rack block a323 is installed on the moving plate 312, a rack block b324 is installed on the slide plate 318, a rotating driving member b325 is installed on the lathe body 1, and a gear b326 is installed on the output end of the rotating driving member b325, and the gear b326 is respectively engaged with the rack block a323 and the rack block b324.

[0050] like Figure 1-Figure 13As shown, the clamping mechanism 2 includes: a guide rail b201, which is installed on the lathe body 1; a movable plate 203, which is slidably arranged on the guide rail b201; a linear driving member 204, which is installed on the movable plate 203; a pushing plate 205, which is installed on the output end of the linear driving member 204; a rotating driving member c206, which is installed on the pushing plate 205; a rotating sleeve a207, which is rotatably installed on the pushing plate 205, and the output end of the rotating driving member c206 and the rotating sleeve a207 are connected by a chain transmission; and a clamping table 208, which is installed in the rotating sleeve a207.

[0051] A groove 2071 is provided in the rotating sleeve a207, and a limiting tooth block is provided in the groove 2071. The clamping table 208 is threadedly connected with a bolt 211, and a pressure block 212 is rotatably provided at the bottom of the bolt 211. A guide rod 213 is provided on the clamping table 208, and the guide rod 213 passes through the pressure block 212.

[0052] In this embodiment, in the initial state, the inner processing tool 304 is located inside the rotating sleeve b301 (not extended), the insertion rod a307 is inserted into the slot a3141, and the rotating driving member a315 drives the transmission wheel 314 to rotate through the belt 317, driving the connecting rod a305 and the rotating sleeve b301 to rotate, and driving the outer processing tool 302 to rotate around the axis of the rotating sleeve b301;

[0053] At this time, the driving plate 205 is driven to move along the X direction, so that the shaft body 801 of the cross shaft in the clamping table 208 contacts the outer processing tool 302, and then the outer side of the shaft body 801 of the cross shaft is processed. After the processing is completed, the rotating driving part c206 drives the clamping table 208 to rotate 90 degrees through the chain to process the other shaft bodies 801 of the cross shaft.

[0054] In this embodiment, the rotating driving member b325 drives the gear b326 to rotate, drives the rack block a323 and the rack block b324 to move toward each other, drives the insertion rod a307 to leave the slot a3141, and inserts the insertion rod b322 into the slot b3142, and drives the inner processing tool 304 on the rotating shaft 303 to extend outward along the rotating sleeve b301;

[0055] At this time, the push plate 205 is driven to move along the X direction, so that the shaft body 801 of the cross shaft in the clamping truncated table 208 contacts the inner processing tool 304, and then the inside of the shaft body 801 of the cross shaft is drilled.

[0056] Embodiment 2: Figure 1-Figure 13As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0057] like Figure 1-Figure 13 As shown, the cooling mechanism 4 includes: a connecting sleeve a411, which is arranged on the outside of the connecting rod a305; a liquid inlet pipe a412, which is installed on the connecting sleeve a411; a liquid discharge pipe a413, which is installed on the connecting sleeve a411; a connecting sleeve b414, which is arranged on the outside of the rotating shaft 303; a liquid inlet pipe b415, which is installed on the connecting sleeve b414; a liquid discharge pipe b416, which is installed on the connecting sleeve b414; a liquid supply component 42, which is installed on the lathe body 1; and a switching component 43, which is installed on the lathe body 1.

[0058] The liquid supply component 42 includes: a cooling box, which is arranged under the lathe body 1; a fixed sleeve 422, which is installed on the lathe body 1, and a sliding groove 4221 is opened in the fixed sleeve 422; a liquid inlet pipe a412, a liquid discharge pipe a413, a liquid inlet pipe b415, and a liquid discharge pipe b416 are connected to the fixed sleeve 422; a pump, which is installed on the lathe body 1, and the cooling box cools the flowing coolant. Ice cubes are preferably placed in the cooling box. The liquid supply component 42 is a conventional technical means in the field and will not be described in detail here.

[0059] The switching assembly 43 includes: a sliding sleeve 431, which is slidably arranged in the sliding groove 4221; a mounting sleeve 432, and two mounting sleeves 432 are installed on both sides of the sliding sleeve 431; the mounting sleeve 432, the pump, and the cooling box are connected through a pipeline 434; two L-shaped grooves 4311 are opened in the sliding sleeve 431, and a connecting rod b433 is installed on the rack block a323, and the connecting rod b433 is connected to the sliding sleeve 431.

[0060] A cooling groove a3021 is provided in the outer processing tool 302, and a flow groove a3051 is provided in the connecting rod a305; a cooling groove b3041 is provided in the inner processing tool 304, and a flow groove b3031 is provided in the rotating shaft 303; the cooling groove a3021 and the flow groove a3051 are connected, and the cooling groove b3041 and the flow groove b3031 are connected.

[0061] In this embodiment, in the initial state, the two L-shaped grooves 4311 are connected to the liquid inlet pipe a412 and the liquid discharge pipe a413 respectively, and the pump drives the coolant in the pipeline 434 to circulate, and the flow direction of the coolant is: pump → pipeline 434 → mounting sleeve 432 → L-shaped groove 4311 → liquid inlet pipe a412 → flow groove a3051 → cooling groove a3021 → flow groove a3051 → liquid discharge pipe a413 → L-shaped groove 4311 → mounting sleeve 432 → pipeline 434 → cooling box → pump, thereby cooling the outer processing tool 302 from the inside, avoiding the outer processing tool 302 from being too high during processing, and extending the service life of the outer processing tool 302;

[0062] The rotating driving member b325 drives the gear b326 to rotate, drives the rack block a323 and the rack block b324 to move toward each other, and drives the sliding sleeve 431 to slide in the sliding groove 4221, so that the two L-shaped grooves 4311 are respectively connected with the liquid inlet pipe b415 and the liquid discharge pipe b416; at this time, the flow direction of the coolant is: pump → pipeline 434 → mounting sleeve 432 → L-shaped groove 4311 → liquid inlet pipe b415 → flow groove b3031 → cooling groove b3041 → flow groove b3031 → liquid discharge pipe b416 → L-shaped groove 4311 → mounting sleeve 432 → pipeline 434 → cooling box → pump, so as to cool the inner processing tool 304 from the inside, avoid excessive temperature of the inner processing tool 304 during processing, and extend the service life of the inner processing tool 304.

[0063] Embodiment 3: This embodiment provides a method for machining a cross-axis CNC lathe of an automobile differential, comprising the following steps:

[0064] Step 1, placement and positioning process: put the cross shaft into the clamping truncated table 208, insert the clamping block in the clamping truncated table 208 into the clamping slot of the cross shaft mounting seat 800 to limit and fix the cross shaft; swing the swing arm 210 downward, drive the push plate 205 to move and drive the clamping truncated table 208 to move, so that the shaft body 801 of the cross shaft in the clamping truncated table 208 is inserted into the positioning hole 2101, and the cross shaft before processing is positioned;

[0065] When the shaft body 801 cannot be inserted into the positioning hole 2101 due to deflection, the bolt 211 is rotated to drive the pressing block 212 to move downward, so that the pressing block 212 leaves the limiting tooth block. At this time, the clamping table 208 can be rotated to adjust the angle of the shaft body 801 of the cross shaft deflected in the clamping table 208 so that it can be inserted into the positioning hole 2101. Then, the bolt 211 is rotated to drive the pressing block 212 to move upward and press on the limiting tooth block to limit the shaft body 801 of the cross shaft in the clamping table 208.

[0066] Step 2, outer processing step: in the initial state, the insert rod a307 is inserted into the slot a3141, and the rotating driving member a315 drives the transmission wheel 314 to rotate through the belt 317, driving the connecting rod a305 and the rotating sleeve b301 to rotate, and driving the outer processing tool 302 to rotate around the axis of the rotating sleeve b301;

[0067] At this time, the driving plate 205 is driven to move along the X direction, so that the shaft body 801 of the cross shaft in the clamping truncated table 208 contacts the outer processing tool 302, and then the outer side of the shaft body 801 of the cross shaft is processed. After the processing is completed, the rotating driving member c206 drives the clamping truncated table 208 to rotate 90 degrees through the chain to process the other shaft bodies 801 of the cross shaft;

[0068] Step 3, inner processing step: the rotating driving member b325 drives the gear b326 to rotate, drives the rack block a323 and the rack block b324 to move toward each other, drives the insertion rod a307 to leave the slot a3141, inserts the insertion rod b322 into the slot b3142, and drives the inner processing tool 304 on the rotating shaft 303 to extend outward along the rotating sleeve b301;

[0069] At this time, the push plate 205 is driven to move along the X direction, so that the shaft body 801 of the cross shaft in the clamping truncated table 208 contacts the inner processing tool 304, and then the inside of the shaft body 801 of the cross shaft is drilled;

[0070] Step 4, cooling process: in the initial state, the two L-shaped grooves 4311 are connected to the liquid inlet pipe a412 and the liquid discharge pipe a413 respectively, and the pump drives the coolant in the pipeline 434 to circulate, and the flow direction of the coolant is: pump → pipeline 434 → mounting sleeve 432 → L-shaped groove 4311 → liquid inlet pipe a412 → flow groove a3051 → cooling groove a3021 → flow groove a3051 → liquid discharge pipe a413 → L-shaped groove 4311 → mounting sleeve 432 → pipeline 434 → cooling box → pump, and then the outer processing tool 302 is cooled from the inside to avoid the outer processing tool 302 from being too high during processing, thereby extending the service life of the outer processing tool 302;

[0071] The rotating driving member b325 drives the gear b326 to rotate, drives the rack block a323 and the rack block b324 to move toward each other, and drives the sliding sleeve 431 to slide in the sliding groove 4221, so that the two L-shaped grooves 4311 are respectively connected with the liquid inlet pipe b415 and the liquid discharge pipe b416; at this time, the flow direction of the coolant is: pump → pipeline 434 → mounting sleeve 432 → L-shaped groove 4311 → liquid inlet pipe b415 → flow groove b3031 → cooling groove b3041 → flow groove b3031 → liquid discharge pipe b416 → L-shaped groove 4311 → mounting sleeve 432 → pipeline 434 → cooling box → pump, so as to cool the inner processing tool 304 from the inside, avoid excessive temperature of the inner processing tool 304 during processing, and extend the service life of the inner processing tool 304.

[0072] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A cross-axis CNC lathe for automobile differential, comprising a lathe body (1), characterized in that: The lathe body (1) is provided with a clamping mechanism (2) and an inner and outer side processing mechanism (3); The inner and outer processing mechanism (3) comprises: A rotating sleeve b (301), the rotating sleeve b (301) being rotatably mounted on the lathe body (1); An outer processing tool (302), the outer processing tool (302) being mounted on the rotating sleeve b (301); A rotating shaft (303), the rotating shaft (303) is rotatably disposed in the rotating sleeve b (301); An inner side machining tool (304), wherein the inner side machining tool (304) is mounted on the rotating shaft (303); An adjusting drive assembly (31) is mounted on the lathe body (1); the lathe body (1) is provided with a cooling mechanism (4) for cooling the outer machining tool (302) and the inner machining tool (304).

2. The automobile differential cross-axis CNC lathe according to claim 1, characterized in that: The adjustment drive assembly (31) comprises: A guide rail a (311), wherein the guide rail a (311) is mounted on the lathe body (1); A moving plate (312), the moving plate (312) being slidably disposed on the guide rail a (311); A support frame (313), wherein the support frame (313) is mounted on the moving plate (312); A transmission wheel (314), the transmission wheel (314) being rotatably disposed on the support frame (313); A rotating driving member a (315), wherein the rotating driving member a (315) is mounted on the moving plate (312); A driving wheel (316), the driving wheel (316) being mounted on the output end of the rotating driving member a (315); The transmission wheel (314) and the driving wheel (316) are connected to each other through a belt (317).

3. The automobile differential cross-axis CNC lathe according to claim 2, characterized in that: The rotating sleeve b (301) is provided with a connecting rod a (305), a circular plate a (306) is provided on the connecting rod a (305), and an inserting rod a (307) is provided on the circular plate a (306); a slot a (3141) is provided on one side of the transmission wheel (314); A slide plate (318) is slidably provided on the guide rail a (311), a connecting frame (319) is installed on the slide plate (318), the rotating shaft (303) is rotatably provided on the connecting frame (319), a circular plate b (320) is installed on the rotating shaft (303), an inserting rod b (322) is installed on the circular plate b (320), and a slot b (3142) is opened on the other side of the transmission wheel (314).

4. The automobile differential cross-axis CNC lathe according to claim 3, characterized in that: A rack block a (323) is mounted on the moving plate (312), a rack block b (324) is mounted on the sliding plate (318), a rotating driving member b (325) is mounted on the lathe body (1), a gear b (326) is mounted on the output end of the rotating driving member b (325), and the gear b (326) is respectively meshed with the rack block a (323) and the rack block b (324).

5. The automobile differential cross-axis CNC lathe according to claim 4, characterized in that: The cooling mechanism (4) comprises: A connecting sleeve a (411), the connecting sleeve a (411) is arranged outside the connecting rod a (305); A liquid inlet pipe a (412), the liquid inlet pipe a (412) being installed on the connecting sleeve a (411); A liquid discharge pipe a (413), wherein the liquid discharge pipe a (413) is installed on the connecting sleeve a (411); A connecting sleeve b (414), wherein the connecting sleeve b (414) is arranged outside the rotating shaft (303); A liquid inlet pipe b (415), the liquid inlet pipe b (415) is installed on the connecting sleeve b (414); A liquid discharge pipe b (416), wherein the liquid discharge pipe b (416) is installed on the connecting sleeve b (414); A liquid supply assembly (42), the liquid supply assembly (42) being mounted on the lathe body (1); A switching component (43), wherein the switching component (43) is installed on the lathe body (1).

6. The automobile differential cross-axis CNC lathe according to claim 5, characterized in that: The liquid supply assembly (42) comprises: A cooling box, the cooling box being arranged below the lathe body (1); a fixed sleeve (422), the fixed sleeve (422) being mounted on the lathe body (1), and a sliding groove (4221) being provided in the fixed sleeve (422); the liquid inlet pipe a (412), the liquid discharge pipe a (413), the liquid inlet pipe b (415), and the liquid discharge pipe b (416) being in communication with the fixed sleeve (422); A pump is installed on the lathe body (1).

7. The automobile differential cross-axis CNC lathe according to claim 6, characterized in that: The switching component (43) comprises: A sliding sleeve (431), wherein the sliding sleeve (431) is slidably disposed in the sliding groove (4221); A mounting sleeve (432), wherein two mounting sleeves (432) are mounted on both sides of the sliding sleeve (431); the mounting sleeve (432), the pump, and the cooling box are connected via a pipeline (434); Two L-shaped grooves (4311) are provided in the sliding sleeve (431), and a connecting rod b (433) is installed on the rack block a (323), and the connecting rod b (433) is connected to the sliding sleeve (431).

8. The automobile differential cross-axis CNC lathe according to claim 7, characterized in that: The outer processing tool (302) is provided with a cooling groove a (3021), the connecting rod a (305) is provided with a flow groove a (3051), and the cooling groove a (3021) and the flow groove a (3051) are connected; A cooling groove b (3041) is provided in the inner processing tool (304), and a flow groove b (3031) is provided in the rotating shaft (303), and the cooling groove b (3041) and the flow groove b (3031) are connected.

9. The automobile differential cross-axis CNC lathe according to claim 8, characterized in that: The clamping mechanism (2) comprises: A guide rail b (201), wherein the guide rail b (201) is mounted on the lathe body (1); A movable plate (203), the movable plate (203) being slidably disposed on the guide rail b (201); A linear drive member (204), wherein the linear drive member (204) is mounted on the movable plate (203); A push plate (205), the push plate (205) being mounted on the output end of the linear drive member (204); A rotating driving member c (206), wherein the rotating driving member c (206) is mounted on the pushing plate (205); A rotating sleeve a (207), wherein the rotating sleeve a (207) is rotatably mounted on the pushing plate (205), and an output end of the rotating driving member c (206) and the rotating sleeve a (207) are connected via a chain transmission; A clamping truncated table (208), wherein the clamping truncated table (208) is installed in the rotating sleeve a (207).

10. The automobile differential cross-axis CNC lathe according to claim 9, characterized in that: A fixed seat (209) is installed on the lathe body (1), a swing arm (210) is rotatably installed on the fixed seat (209), and a positioning hole (2101) is opened in the swing arm (210); The rotating sleeve a (207) is provided with a groove (2071), a limiting tooth block is provided in the groove (2071), the clamping truncated table (208) is threadedly connected with a bolt (211), a pressing block (212) is rotatably provided at the bottom of the bolt (211), a guide rod (213) is provided on the clamping truncated table (208), and the guide rod (213) passes through the pressing block (212).

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