A differential case drilling device

Abstract

The present invention relates to the technical field of differential case processing, and specifically to a differential case drilling device, comprising: a machine platform; a differential case body; a fixing mechanism for fixing the differential case body; a drilling mechanism for drilling holes in the fixed differential case body; the fixing mechanism comprises: a support cylinder rotatably mounted on the machine platform; an outer clamping assembly; and an inner clamping assembly. In the present invention, through the setting of the fixing mechanism, not only the outer side and the inner side of the differential case body can be clamped and fixed, but also the differential case body can be clamped and fixed from different directions, which greatly improves the stability of the differential case body, and avoids the problem that the differential case body is easily displaced during drilling, resulting in the offset of the drilling position.

Description

Technical Field

[0001] The invention relates to the technical field of differential case processing, and in particular to a differential case drilling device. Background Art

[0002] The differential is a machine that produces a speed difference. Its two output shafts can move at different speeds, but the output torque of the two shafts must be strictly kept the same. The automobile differential is the main component of the car drive, and has a very important influence on the car's traction, stability, and passability. The differential housing is the skeleton of the differential gear, half-shaft gear, and cross shaft, and the differential housing combines them together. The differential housing needs to be drilled during the production and processing process.

[0003] A Chinese patent with application number CN202020470883.3 discloses a vertical processing and drilling device for a differential case, comprising a base assembly, a clamping device, a support block, a mandrel, an upper positioning plate assembly, and a side positioning device, wherein the base assembly is provided with a clamping device, a support block, a side positioning device, and a mandrel; the mandrel is connected to the upper positioning plate assembly through a positioning key to position the radial center of the differential case; the side positioning device positions the center of the cross shaft hole of the differential case through a positioning pin; the clamping device is pressed on the upper plane of the upper positioning plate assembly through three pressing plates to press the differential case; the device is suitable for processing the large end face basin tooth mounting holes and the cross shaft locking threaded holes of the differential case to ensure the position of the differential case holes, the quality of the differential case is stable, the tooling structure is simple, the production efficiency is high, and the labor intensity and production cost of workers are reduced.

[0004] However, in the above patent, the differential housing is pressed down by only three pressure plates, and the fixing effect is poor. When drilling, the differential housing is easily displaced, resulting in deviation of the drilling position.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the invention

[0006] The object of the present invention is to provide a differential case drilling device which can effectively solve the above technical problems.

[0007] In order to achieve the purpose of the present invention, the following technical scheme is adopted: A differential case drilling device, comprising: a machine platform; a differential case body; a fixing mechanism for fixing the differential case body; and a drilling mechanism for drilling holes in the fixed differential case body. The fixing mechanism comprises: a support cylinder rotatably mounted on the machine platform; an outer clamping assembly; and an inner clamping assembly; The outer clamping assembly comprises: a power source 1 fixedly installed in the support tube, a rotating rod fixedly installed at the output end of the power source 1, a linkage gear fixedly sleeved on the rotating rod, a linkage rack meshingly connected with the linkage gear, a linkage plate fixedly connected with the linkage rack, an outer clamping plate fixedly connected with the linkage plate, and a limiting member 1 for limiting the position of the outer clamping plate when it moves; The inner clamping assembly includes: an inner clamping plate, a threaded block threadedly connected to the rotating rod, a clamping rod hingedly installed between the threaded block and the inner clamping plate, and a second limiting member for limiting the threaded block when it moves.

[0008] Furthermore, the drilling mechanism includes: an installation box fixedly installed on the machine platform, a power source 2 fixedly installed on the installation box, a mounting base fixedly installed on the movable end of the power source 2, a drilling machine fixedly installed on the mounting base, a guiding assembly for guiding the mounting base when moving, a cooling assembly for cooling the differential case body when drilling, a rotating assembly for adjusting the drilling position of the differential case body, a cleaning assembly for cleaning the drill bit of the drilling machine, and a grinding assembly for grinding the drilled holes on the differential case body.

[0009] Furthermore, the cooling assembly includes: a liquid spray head, a cooling box fixedly installed in the machine, a fixed cylinder fixedly installed in the installation box, a piston slidably installed in the fixed cylinder, a movable rod fixedly installed on the piston, a liquid inlet pipe connecting the cooling box and the fixed cylinder, a liquid outlet pipe connecting the liquid spray head and the fixed cylinder, an adjustment unit for adjusting the spray range of the liquid spray head, and a recovery unit for recovering the coolant; the movable rod is fixedly connected to the telescopic end of the power source 2.

[0010] Furthermore, the adjustment unit includes: a connecting rod fixedly mounted on the mounting seat, a guide groove 1 opened on the connecting rod, a cylinder slidably mounted on the connecting rod, a rolling element 1 rotatably mounted on the cylinder, a guide groove 2 opened on the cylinder, a ring slidably mounted on the cylinder, a rolling element 2 rotatably mounted on the ring, a movable frame fixedly mounted on the ring, a protective cylinder fixedly mounted on the machine platform, and a guide groove 3 opened on the protective cylinder.

[0011] Furthermore, the recovery unit includes: an annular groove formed on the machine platform, a through hole connected to the annular groove, and a filter screen movably installed in the annular groove.

[0012] Furthermore, the rotating assembly includes: a driven gear coaxially connected to the supporting tube, a driving gear meshingly connected to the driven gear, and a power source for driving the driving gear to rotate.

[0013] Furthermore, the cleaning assembly includes: an annular tube fixedly installed on the drilling machine, an air guide tube connecting the annular tube and the fixed tube, and an air jet head plugged and installed on the annular tube.

[0014] Furthermore, the grinding assembly includes: a grinding cylinder, and a rotating unit driving the grinding cylinder to rotate; The rotating unit includes: a mounting plate fixedly mounted on the end of the connecting rod, a fixing rod fixedly mounted on the mounting plate, a sleeve slidably mounted on the fixing rod, a movable block slidably mounted in the sleeve, a mounting tube fixedly mounted on the movable block, a guide groove four opened in the mounting tube, a mounting rod movably mounted in the mounting tube, a rolling element three rotatably mounted on the mounting rod, and a reset spring for driving the sleeve to reset.

[0015] Furthermore, the rotating assembly also includes: a stirring blade coaxially connected to the driven gear.

[0016] Furthermore, the fixing mechanism also includes: a fixing tube, an extrusion rod slidably installed in the fixing tube, an extrusion block fixedly installed at the end of the extrusion rod, and a linkage spring fixedly installed between the extrusion rod and the fixing tube.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The differential case drilling device of the present invention can not only clamp and fix the outer side and the inner side of the differential case body, but also clamp and fix the differential case body from different directions through the setting of the fixing mechanism, thereby greatly improving the stability of the fixation of the differential case body and avoiding the problem that the differential case body is easily displaced during drilling, resulting in the deviation of the drilling position. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0019] Figure 1 It is a three-dimensional schematic diagram of a differential case drilling device of the present invention; Figure 2 It is a three-dimensional schematic diagram of a differential case drilling device according to the present invention from another angle; Figure 3 It is a cross-sectional schematic diagram of a component protection sleeve of a differential case drilling device of the present invention; Figure 4 A schematic cross-sectional view of a component machine of a differential case drilling device according to the present invention; Figure 5 A schematic cross-sectional view of a component cooling box of a differential case drilling device according to the present invention; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 A three-dimensional schematic diagram of a component drilling machine of a differential case drilling device according to the present invention; Figure 8 It is a cross-sectional schematic diagram of a component support cylinder of a differential case drilling device of the present invention; Fig. 9 It is a cross-sectional schematic diagram of a component fixing plate of a differential case drilling device of the present invention; Fig.10 It is a schematic cross-sectional view of a component ring of a differential case drilling device according to the present invention; Fig.11 A schematic cross-sectional view of a component casing of a differential case drilling device according to the present invention; Fig.12 It is a cross-sectional schematic diagram of a component installation tube of a differential case drilling device of the present invention; Fig.13 A schematic cross-sectional view of a component fixing tube of a differential case drilling device according to the present invention; Fig.14 A three-dimensional schematic diagram of a differential case body as a component of a differential case drilling device according to the present invention; Fig.15 It is a three-dimensional schematic diagram of a component support cylinder of a differential case drilling device of the present invention.

[0020] In the figure: 1. Machine; 2. Differential case body; 3. Fixing mechanism; 31. Support cylinder; 32. External clamping assembly; 321. Power source 1; 322. Turn bar; 323. Linking gear; 324. Linking rack; 325. Linking plate; 326. External clamping plate; 327. Limiting piece 1; 3271. Fixed plate 1; 3272. Fixed plate 2; 3273. Limiting groove 1; 3274. Limiting groove 2; 3275. Sliding rod; 33. Internal clamping assembly; 331. Threaded block ; 332, inner clamping plate; 333, clamping rod; 334, stopper 2; 3341, connecting plate; 3342, stopper rod; 34, fixed tube; 35, extrusion rod; 36, extrusion block; 37, linkage spring; 4, drilling mechanism; 41, installation box; 42, power source 2; 43, installation seat; 44, drilling machine; 45, guide assembly; 451, slider; 452, slide rail; 46, cooling assembly; 461, cooling box; 462, fixed cylinder; 463, movable moving rod; 464, piston; 465, liquid inlet pipe; 466, liquid outlet pipe; 467, liquid spray head; 468, regulating unit; 4681, connecting rod; 4682, protective cylinder; 4683, mounting frame; 4684, cylinder; 4685, rolling element 1; 4686, rolling element 2; 4687, ring; 4688, movable frame; 469, recovery unit; 4691, annular groove; 4692, through hole; 4693, filter screen; 47, rotating assembly; 471 , power source three; 472, driving gear; 473, driven gear; 474, stirring blade; 48, cleaning assembly; 481, annular tube; 483, nozzle; 484, air guide tube; 49, grinding assembly; 491, grinding cylinder; 492, rotating unit; 4921, mounting plate; 4922, fixing rod; 4923, sleeve; 4924, movable block; 4925, mounting tube; 4926, mounting rod; 4927, rolling element three; 4928, reset spring. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the present invention, rather than all embodiments.

[0022] In the description of the present invention, it should be understood that the terms "center", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present invention. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0023] like Figures 1 to 15 As shown, a differential case drilling device of the present invention comprises: a machine platform 1; a differential case body 2; a fixing mechanism 3 for fixing the differential case body 2; and a drilling mechanism 4 for drilling holes in the fixed differential case body 2.

[0024] The fixing mechanism 3 includes: a support cylinder 31 rotatably mounted on the machine table 1; an outer clamping assembly 32; an inner clamping assembly 33; the outer clamping assembly 32 includes: a power source 321 fixedly mounted in the support cylinder 31, a rotating rod 322 fixedly mounted on the output end of the power source 321, a linkage gear 323 fixedly sleeved on the rotating rod 322, a linkage rack 324 meshingly connected to the linkage gear 323, a linkage plate 325 fixedly connected to the linkage rack 324, an outer clamping plate 326 fixedly connected to the linkage plate 325, and a limiting member 327 for limiting the outer clamping plate 326 when it moves.

[0025] In the present invention, the linkage rack 324, the linkage plate 325, and the outer clamping plate 326 are provided in multiple groups, so that the outer side of the differential case body 2 can be fixed from multiple directions, thereby improving the fixing effect.

[0026] When fixing the differential case body 2, first place the differential case body 2 in the support tube 31. The side wall of the support tube 31 is provided with a placement opening that matches the differential case body 2. When the differential case body 2 is placed in the support tube 31, the side wall shell of the support tube 31 supports the differential case body 2. Through the setting of the support tube 31, the differential case body 2 can be positioned, thereby facilitating subsequent rapid fixation and improving the efficiency of fixation.

[0027] At this time, the power source 1 321 is started to drive the rotating rod 322 to rotate, the rotating rod 322 drives the connecting gear 323 to rotate, the connecting gear 323 drives multiple sets of connecting racks 324 to move, and the connecting racks 324 drive the adjacent connecting plates 325 to move. Under the limiting action of the limiting member 1 327, the connecting plates 325 drive the adjacent outer clamping plates 326 to approach each other, thereby achieving the clamping and fixing of the outer side of the differential case body 2.

[0028] The limiting member 327 includes: a fixing plate 1 3271 and a fixing plate 2 3272 fixedly installed in the support, a limiting groove 1 3273 opened on the fixing plate 1 3271, a limiting groove 2 3274 opened on the fixing plate 2 3272, and a sliding rod 3275 fixedly installed in the limiting groove 1 3273; the rotating rod 322 is a bidirectional threaded rotating rod; the rotating rod 322 is rotatably installed on the fixing plate 1 3271 and the fixing plate 2 3272; the linkage plate 325 passes through the inner cavity of the limiting groove 1 3273, and is slidably installed in the inner cavity of the limiting groove 2 3274, and the linkage plate 325 is slidably installed on the sliding rod 3275.

[0029] Specifically, when the linkage gear 323 drives the linkage plate 325 to move, the linkage plate 325 slides in the inner cavity of the limit groove 1 3273 and the limit groove 2 3274. The limiting action of the limit groove 1 3273 and the limit groove 2 3274 can limit the linkage plate 325, and then the moving direction of the external clamping plate 326 can be limited.

[0030] In addition, the linkage plate 325 is slidably installed on the slide rod 3275. Through the setting of the slide rod 3275, on the one hand, it can limit the linkage plate 325, and then limit the moving direction of the outer clamping plate 326; on the other hand, it can prevent the linkage plate 325 from being separated from the limit groove 1 3273 and the limit groove 2 3274.

[0031] It is to be added here that the power source 321 is preferably: a motor.

[0032] The inner clamping assembly 33 includes: an inner clamping plate 332, a threaded block 331 threadedly connected to the rotating rod 322, a clamping rod 333 hingedly installed between the threaded block 331 and the inner clamping plate 332, and a second limiting member 334 for limiting the movement of the threaded block 331; two threaded blocks 331 are provided, which are threadedly installed at both ends of the rotating rod 322 respectively.

[0033] In the present invention, multiple groups of clamping rods 333 and inner clamping plates 332 are provided, so that the inner side of the differential case body 2 can be fixed from multiple directions, further improving the fixing effect.

[0034] While the outer clamping plate 326 clamps and fixes the outer side of the differential case body 2, since a bidirectional thread is provided on the rotating rod 322, when the rotating rod 322 rotates, under the limiting action of the second limiting member 334, the two threaded blocks 331 approach each other. The second limiting member 334 includes: a connecting plate 3341 rotatably installed on the end of the rotating rod 322, and a limiting rod 3342 fixedly installed between the connecting plate 3341 and the fixed plate 1 3271; the threaded block 331 is slidably installed on the limiting rod 3342.

[0035] Specifically, when the rotating rod 322 rotates, through the setting of the limiting rod 3342 and the connecting plate 3341, the two threaded blocks 331 approach each other along the axial direction of the rotating rod 322, thereby driving the adjacent clamping rods 333 to move, so that the multiple groups of inner clamping plates 332 move away from each other, thereby achieving clamping and fixing of the inner side of the differential case body 2.

[0036] When the drilling of the differential case body 2 is completed, the power source 1 321 is started to rotate in the opposite direction, thereby driving the outer clamping plate 326 and the inner clamping plate 332 to reset, thereby releasing the clamping of the differential case body 2, and the differential case body 2 can be taken out from the support tube 31.

[0037] In the present invention, by setting the outer clamping assembly 32 and the inner clamping assembly 33, when the power source 321 is started, the outer clamping plate 326 and the inner clamping plate 332 can be synchronously driven to clamp and fix the outer side and the inner side of the differential case body 2 respectively, thereby improving the stability of the fixation of the differential case body 2 and avoiding the problem that the differential case body 2 is easily displaced during drilling, resulting in the deviation of the drilling position.

[0038] Furthermore, since multiple sets of outer clamping plates 326 and inner clamping plates 332 are provided, on the one hand, the differential case body 2 can be fixed from multiple directions, thereby improving the fixing effect of the differential case body 2; on the other hand, the clamping area of ​​the differential case body 2 is increased, thereby further improving the fixing effect.

[0039] In addition, the outer clamping plate 326 and the inner clamping plate 332 are both configured to be arc-shaped, so that the outer clamping plate 326 and the inner clamping plate 332 can better fit with the outer side and the inner side of the differential case body 2, thereby ensuring the stability of the clamping.

[0040] The drilling mechanism 4 includes: an installation box 41 fixedly installed on the machine 1, a power source 42 fixedly installed on the installation box 41, a mounting seat 43 fixedly installed on the movable end of the power source 42, a limited opening is opened on the installation box 41, the mounting seat 43 passes through the inner cavity of the limited opening and can slide in the limited opening, a drilling machine 44 fixedly installed on the mounting seat 43, a guide component 45 for guiding the mounting seat 43 when moving, a cooling component 46 for cooling the differential case body 2 when drilling, a rotating component 47 for adjusting the drilling position of the differential case body 2, a cleaning component 48 for cleaning the drill bit of the drilling machine 44, and a grinding component 49 for grinding the drilled holes on the differential case body 2.

[0041] When drilling holes in the fixed differential case body 2, start the power source 2 42 to drive the mounting seat 43 to move downward, and the mounting seat 43 drives the drilling machine 44 to move downward, thereby drilling holes in the differential case body 2. After the drilling is completed, start the power source 2 42 to drive the mounting seat 43 to move upward, and then drive the drilling machine 44 to move upward, so as to prepare for subsequent use.

[0042] It is to be added here that the power source 2 42 is preferably: a telescopic cylinder.

[0043] The guide assembly 45 includes: a slide rail 452 fixedly mounted on the installation box 41 , and a slider 451 slidably mounted on the slide rail 452 ; the slider 451 is fixedly connected to the installation seat 43 .

[0044] When the mounting seat 43 moves, the slider 451 can be driven to slide on the slide rail 452. Through the cooperation between the slide rail 452 and the slider 451, the mounting seat 43 can be limited and guided, and then the drilling machine 44 can be limited and guided, avoiding deviation of the drilling machine 44 during the up and down movement, thereby improving the accuracy of drilling.

[0045] The cooling assembly 46 includes: a liquid spray head 467, a cooling box 461 fixedly installed in the machine 1, in which coolant is stored, a fixed cylinder 462 fixedly installed in the installation box 41, a piston 464 slidably installed in the fixed cylinder 462, a movable rod 463 fixedly installed on the piston 464, a liquid inlet pipe 465 connecting the cooling box 461 and the fixed cylinder 462, a liquid outlet pipe 466 connecting the liquid spray head 467 and the fixed cylinder 462, an adjusting unit 468 for adjusting the spray range of the liquid spray head 467, and a recovery unit 469 for recovering the coolant; a first one-way valve is installed on the liquid inlet pipe 465; a second one-way valve is installed on the liquid outlet pipe 466; the top end of the movable rod 463 penetrates the side wall of the fixed cylinder 462 and is fixedly connected to the telescopic end of the power source 2 42; a sealing ring is installed at the penetration point of the movable rod 463 on the fixed cylinder 462 to reduce gas leakage from the penetration point on the fixed cylinder 462 when the movable rod 463 moves.

[0046] The fixed cylinder 462 is divided into two independent spaces by the piston 464. The space at the top of the piston 464 stores air, and the space at the bottom of the piston 464 stores coolant.

[0047] When the power source 2 42 is started to drive the drilling machine 44 to move downward and drill a hole in the differential case body 2, the movable rod 463 is simultaneously driven to move downward, and the movable rod 463 drives the piston 464 to slide downward in the fixed cylinder 462, and the piston 464 squeezes the coolant downward. At this time, the first one-way valve is closed, and the second one-way valve is opened. The coolant enters the spray head 467 through the liquid outlet pipe 466 and is sprayed on the drilling hole of the differential case body 2. On the one hand, the drill bit of the drilling machine 44 and the differential case body 2 are cooled and cooled, avoiding the problem that a large amount of heat is generated by the friction between the drill bit and the differential case body 2 during the drilling process, resulting in local temperature increase and affecting the service life of the drill bit; on the other hand, the friction resistance between the drill bit and the differential case body 2 is reduced, thereby improving the cutting performance of the drill bit and increasing the speed and efficiency of drilling; at the same time, it is convenient to discharge the chips generated during the drilling process, thereby ensuring the smooth drilling operation and improving the processing quality.

[0048] When the drilling machine 44 completes drilling, the power source 2 42 is started to drive the drilling machine 44 to move upward, and simultaneously drives the movable rod 463 to move upward, and the movable rod 463 drives the piston 464 to slide upward in the fixed cylinder 462. At this time, the first one-way valve is opened, and the second one-way valve is closed, and the coolant in the cooling box 461 enters the fixed cylinder 462 through the liquid inlet pipe 465, so that the coolant is automatically absorbed into the fixed cylinder 462, preparing for subsequent spraying.

[0049] In the present invention, when the power source 42 drives the drilling machine 44 to move downward and drill the differential case body 2, the spraying of coolant is achieved simultaneously. When the power source 42 drives the drilling machine 44 to move upward, the absorption of coolant is achieved simultaneously. No human control is required, thereby improving the automation performance of the equipment.

[0050] It should be added here that the power source 42 drives the drilling machine 44 to move downward, and the coolant starts to spray before drilling the differential case body 2. That is to say, the spraying of the coolant precedes the drilling operation, so that the temperature of the drilling point of the differential case body 2 can be reduced in advance, creating a lower working temperature environment for the subsequent drilling process, thereby reducing the heat accumulation caused by friction during the drilling process and extending the service life of the drill bit.

[0051] The adjustment unit 468 includes: a connecting rod 4681 fixedly mounted on the mounting seat 43; a guide groove 1 provided on the connecting rod 4681, the guide groove 1 being spiral; a cylinder 4684 slidably mounted on the connecting rod 4681; a rolling element 1 4685 rotatably mounted on the cylinder 4684; a guide groove 2 provided on the cylinder 4684, the guide groove 2 being composed of two U-shaped grooves in opposite directions and interconnected with each other; a ring 4687 slidably mounted on the cylinder 4684; a rolling element 2 4686 rotatably mounted on the ring 4687; and a movable frame 468 fixedly mounted on the ring 4687. 8. The liquid spray head 467 is hingedly installed in the movable frame 4688; the protective cylinder 4682 is fixedly installed on the machine 1, and the protective cylinder 4682 can prevent waste chips from splashing during drilling and affecting the working environment, thereby facilitating the collection of waste chips; a guide groove three is provided on the protective cylinder 4682, and the guide groove three is wavy, and the liquid spray head 467 is slidably installed in the guide groove three; the cylinder 4684 is rotatably installed on the mounting frame 4683, and the mounting frame 4683 is fixedly connected to the mounting box 41; a sliding opening is provided on the mounting frame 4683, and the movable frame 4688 passes through the inner cavity of the sliding opening and can slide in the sliding opening.

[0052] When the power source 2 42 drives the drilling machine 44 to move downward and drives the coolant to spray, it synchronously drives the connecting rod 4681 to move downward. At this time, the rolling member 1 4685 rolls along the path of the guide groove 1. Since the guide groove 1 is spiral, when the rolling member 1 4685 rolls along the path of the guide groove 1, it drives the cylinder 4684 to rotate. When the cylinder 4684 rotates, it drives the rolling member 2 4686 to roll along the path of the guide groove 2. The rolling member 2 4686 drives the ring 4687 to move, and the ring 4687 drives the movable frame 4688 to slide in the sliding opening. Through the limiting effect of the sliding opening, the ring 4687 and the movable frame 4688 make up and down reciprocating movements along the axis of the cylinder 4684, thereby driving the spray head 467 to make up and down reciprocating movements, thereby expanding the spraying range of the spray head 467 in the vertical direction.

[0053] Since the liquid spray head 467 is slidably installed in the guide groove three, the liquid spray head 467 moves along the path of the guide groove three while making up and down reciprocating movements. Since the guide groove three is wavy and the liquid spray head 467 is hingedly installed in the movable frame 4688, the liquid spray head 467 moves up and down while swinging back and forth at the hinge with the movable frame 4688, thereby expanding the spraying range of the liquid spray head 467 in the horizontal direction.

[0054] It should be added here that rolling element 1 4685 and rolling element 2 4686 are preferably: bull's eye balls.

[0055] In the present invention, by setting the adjustment unit 468, the spray head 467 is made to move up and down reciprocatingly, and at the hinge with the movable frame 4688, it swings back and forth, thereby expanding the spraying range of the spray head 467, so that the coolant can be fully sprayed on the drilling holes of the differential case body 2, thereby improving the cooling effect when drilling the differential case body 2.

[0056] The recovery unit 469 includes: an annular groove 4691 opened on the machine 1; a through hole 4692 connected to the annular groove 4691, and a plurality of through holes 4692 are provided to improve the efficiency of the coolant flowing into the cooling box 461; and a filter screen 4693 movably installed in the annular groove 4691.

[0057] Since the coolant sprayed on the drilled holes of the differential case body 2 will mix with the waste chips generated by the drilling and flow into the annular groove 4691, the coolant can be filtered through the filter 4693, and the waste chips will be retained on the filter 4693. The filtered coolant flows into the cooling box 461 through the through hole 4692, thereby realizing the recycling of the coolant, improving the utilization rate of the coolant, and saving production costs.

[0058] The filter screen 4693 can be detachably installed in the collecting tank, thereby facilitating the removal of the filter screen 4693 and further facilitating the cleaning or replacement of the filter screen 4693 .

[0059] It is supplemented here that the cooling box 461 can be connected to an external cold source to cool the coolant in the cooling box 461 , thereby ensuring the cooling effect on the differential case body 2 .

[0060] The rotating assembly 47 includes: a driven gear 473 coaxially connected to the support cylinder 31, a driving gear 472 meshingly connected to the driven gear 473, and a power source 471 driving the driving gear 472 to rotate; the power source 471 is fixedly installed in the machine 1.

[0061] Since a plurality of holes need to be drilled on the differential case body 2 , and the plurality of holes are evenly distributed along the circumference of the differential case body 2 , it is necessary to adjust the drilling position of the differential case body 2 after drilling one hole.

[0062] When adjusting the drilling position of the differential case body 2, start the power source three 471 to drive the driving gear 472 to rotate, and the driving gear 472 drives the driven gear 473 to rotate. Since the support cylinder 31 is coaxially connected with the driven gear 473, the support cylinder 31 is driven to rotate, and then the differential case body 2 is driven to rotate. When it rotates to a certain angle, the power source three 471 stops rotating, thereby realizing the adjustment of the drilling position of the differential case body 2.

[0063] It is to be added here that the power source three 471 is preferably: a motor.

[0064] The cleaning assembly 48 includes: an annular tube 481 fixedly installed on the drilling machine 44; an air guide tube 484 connecting the annular tube 481 and the fixed tube 462; an air jet head 483 plugged and installed on the annular tube 481; a plurality of air jet heads 483 are arranged and evenly distributed along the circumference of the annular tube 481, so that the waste chips attached to the surface of the drill bit can be fully cleaned, thereby improving the cleaning effect.

[0065] When the piston 464 moves downward along the fixed cylinder 462, the outside air can pass through the nozzle 483, the annular tube 481, and the air guide tube 484 in sequence, and finally be sucked into the fixed cylinder 462. When the piston 464 moves upward along the fixed cylinder 462, the piston 464 squeezes the air, so that the air passes through the air guide tube 484, the annular tube 481, the nozzle 483 in sequence, and finally is sprayed on the drill bit surface of the drilling machine 44, so that the waste chips on the drill bit surface can be cleaned.

[0066] As the piston 464 moves upward, the power source 2 42 drives the drill 44 to move upward. At this time, the drill 44 completes drilling and cleans the waste chips on the surface of the drill bit by jetting air, thereby improving the cleanliness of the drill bit surface and further keeping the drill bit sharp, preparing for subsequent drilling operations.

[0067] The grinding assembly 49 includes: a grinding cylinder 491, a rotating unit 492 for driving the grinding cylinder 491 to rotate; the rotating unit 492 includes: a mounting plate 4921 fixedly mounted on the end of the connecting rod 4681; a fixing rod 4922 fixedly mounted on the mounting plate 4921; a sleeve 4923 slidably mounted on the fixing rod 4922; a movable block 4924 slidably mounted in the sleeve 4923, the movable block 4924 being fixedly connected to the fixing rod 4922; a mounting pipe 4925 fixedly mounted on the movable block 4924; a guide opening in the mounting pipe 4925 Groove four, guide groove four is spiral; a mounting rod 4926 movably mounted in the mounting tube 4925, the mounting rod 4926 is rotatably mounted on the sleeve 4923, and the grinding cylinder 491 is fixedly mounted on the top of the mounting rod 4926; a rolling member three 4927 rotatably mounted on the mounting rod 4926, the rolling member three 4927 is rollingly mounted in the guide groove four; a reset spring 4928 that drives the sleeve 4923 to reset, one end of the reset spring 4928 is fixedly connected to the movable block 4924, and the other end of the reset spring 4928 is fixedly connected to the inner wall of the sleeve 4923.

[0068] When the drilling machine 44 completes drilling of the differential case body 2, the power source 42 drives the mounting seat 43 to move upward, the mounting seat 43 drives the drilling machine 44 to move upward, and simultaneously drives the connecting rod 4681 to move upward, the connecting rod 4681 drives the mounting plate 4921 to move upward, the mounting plate 4921 drives the fixing rod 4922 to move upward, thereby driving the grinding cylinder 491 to move upward, and the grinding cylinder 491 is inserted into the drilled hole, so that the waste chips in the drilled hole can be pushed out, thereby realizing the cleaning of the drilled hole.

[0069] When the grinding tube 491 is fully inserted into the drilled hole, the top of the sleeve 4923 abuts against the differential case body 2, so that the sleeve 4923 no longer moves upward. At this time, the fixing rod 4922 continues to move upward, thereby driving the mounting tube 4925 to move upward and driving the return spring 4928 to compress. Since the guide groove four is spiral and the rolling element three 4927 is rollingly installed in the guide groove four, when the mounting tube 4925 moves upward, it drives the rolling element three 4927 to roll along the path of the guide groove four, thereby driving the mounting rod 4926 to rotate, and then driving the grinding tube 491 to rotate. Through the rotation of the grinding tube 491, the burrs in the drilled hole can be polished and removed, ensuring that the inner wall of the drilled hole is smoother and neater, thereby improving the quality of the drilled hole.

[0070] After grinding is completed, power source 2 42 is started to drive the mounting seat 43 to move downward, and the mounting seat 43 drives the connecting rod 4681 to move downward, and then drives the fixing rod 4922 to move downward. At this time, the elastic force of the reset spring 4928 can drive the sleeve 4923 to reset. When the grinding cylinder 491 is separated from the drill hole, power source 2 42 stops running. At this time, starting the rotating assembly 47 can drive the differential case body 2 to rotate and adjust the drilling position of the differential case body 2.

[0071] It should be added here that the rolling element three 4927 is preferably: a bull's eye ball.

[0072] The rotating assembly 47 further includes: a stirring blade 474 coaxially connected to the driven gear 473 ; the stirring blade 474 is located in the coolant in the cooling box 461 .

[0073] When the driven gear 473 rotates, the stirring blade 474 is driven to rotate. The stirring blade 474 rotates to stir the coolant, so that the cold source cools the coolant in the cooling box 461 evenly, ensuring the cooling effect of the coolant.

[0074] In the present invention, the power source 471 is started to drive the differential case body 2 to rotate, and at the same time, the stirring blade 474 can be driven to stir the coolant, which can adjust the drilling position of the differential case body 2 on the one hand; on the other hand, the cold source cools the coolant in the cooling box 461 evenly, ensuring the cooling effect of the coolant.

[0075] The fixing mechanism 3 also includes: a fixing tube 34 fixedly mounted on the drilling machine 44, an extrusion rod 35 slidably mounted in the fixing tube 34, an extrusion block 36 fixedly mounted at the end of the extrusion rod 35, and a linkage spring 37 fixedly mounted between the extrusion rod 35 and the fixing tube 34; the extrusion rod 35 is T-shaped, thereby preventing the extrusion rod 35 from separating from the fixing tube 34.

[0076] When the drilling machine 44 moves downward to drill the differential case body 2, it can drive the fixing tube 34 to move downward, the fixing tube 34 drives the extrusion rod 35 to move downward, and the extrusion rod 35 drives the extrusion block 36 to move downward. Since the extrusion block 36 is lower than the drill bit of the drilling machine 44, it can abut against the differential case body 2 before the drilling machine 44.

[0077] When the extrusion block 36 abuts against the differential case body 2, it no longer moves downward. At this time, when the drilling machine 44 continues to move downward, it can drive the fixing tube 34 to move downward and drive the linkage spring 37 to be compressed. At this time, the elastic force of the linkage spring 37 can apply a downward thrust to the extrusion rod 35, thereby driving the extrusion block 36 to squeeze the differential case body 2. At this time, the mutual cooperation of the extrusion block 36 and the support tube 31 can clamp and fix the differential case body 2 in the vertical direction, further improving the stability of the fixation of the differential case body 2.

[0078] It should be added here that the extrusion block 36 can be designed as an electromagnet. When the differential case body 2 is squeezed and fixed downward, the extrusion block 36 is not energized. When the drilling is completed, the drilling machine 44 moves upward, thereby driving the extrusion block 36 to move upward, and the extrusion block 36 can be energized. At this time, the extrusion block 36 generates magnetism, which can attract the differential case body 2, thereby driving the differential case body 2 to move upward together, thereby facilitating the removal of the differential case body 2 from the support tube 31, thereby improving the convenience of removing the differential case body 2.

[0079] In the present invention, by setting the fixing mechanism 3, not only the outer side and the inner side of the differential case body 2 can be clamped and fixed, but also the differential case body 2 can be clamped and fixed from different directions, which greatly improves the stability of the fixation of the differential case body 2 and avoids the problem that the differential case body 2 is easily displaced during drilling, resulting in the deviation of the drilling position.

[0080] The standard parts used in the present invention can all be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. Machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art. It will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0081] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A differential case drilling device, characterized in that: include: Machine; Differential case body; A fixing mechanism for fixing the differential case body; a drilling mechanism for drilling holes in the fixed differential case body; The fixing mechanism comprises: a support cylinder rotatably mounted on the machine platform; an outer clamping assembly; and an inner clamping assembly; The outer clamping assembly comprises: a power source 1 fixedly installed in the support tube, a rotating rod fixedly installed at the output end of the power source 1, a linkage gear fixedly sleeved on the rotating rod, a linkage rack meshingly connected with the linkage gear, a linkage plate fixedly connected with the linkage rack, an outer clamping plate fixedly connected with the linkage plate, and a limiting member 1 for limiting the position of the outer clamping plate when it moves; The inner clamping assembly includes: an inner clamping plate, a threaded block threadedly connected to the rotating rod, a clamping rod hingedly installed between the threaded block and the inner clamping plate, and a second limiting member for limiting the threaded block when it moves.

2. A differential case drilling device as claimed in claim 1, characterized in that: The drilling mechanism includes: an installation box fixedly installed on the machine platform, a power source 2 fixedly installed on the installation box, a mounting seat fixedly installed on the movable end of the power source 2, a drilling machine fixedly installed on the mounting seat, a guide component for guiding the mounting seat when moving, a cooling component for cooling the differential case body when drilling, a rotating component for adjusting the drilling position of the differential case body, a cleaning component for cleaning the drill bit of the drilling machine, and a grinding component for grinding the drilled holes on the differential case body.

3. A differential case drilling device as claimed in claim 2, characterized in that: The cooling assembly includes: a liquid spray head, a cooling box fixedly installed in the machine, a fixed cylinder fixedly installed in the installation box, a piston slidably installed in the fixed cylinder, a movable rod fixedly installed on the piston, a liquid inlet pipe connecting the cooling box and the fixed cylinder, a liquid outlet pipe connecting the liquid spray head and the fixed cylinder, an adjustment unit for adjusting the spray range of the liquid spray head, and a recovery unit for recovering the coolant; the movable rod is fixedly connected to the telescopic end of the power source 2.

4. A differential case drilling device as claimed in claim 3, characterized in that: The adjustment unit includes: a connecting rod fixedly mounted on the mounting seat, a guide groove 1 opened on the connecting rod, a cylinder slidably mounted on the connecting rod, a rolling element 1 rotatably mounted on the cylinder, a guide groove 2 opened on the cylinder, a ring slidably mounted on the cylinder, a rolling element 2 rotatably mounted on the ring, a movable frame fixedly mounted on the ring, a protective cylinder fixedly mounted on the machine platform, and a guide groove 3 opened on the protective cylinder.

5. A differential case drilling device as claimed in claim 3, characterized in that: The recovery unit comprises: an annular groove formed on the machine platform, a through hole connected to the annular groove, and a filter screen movably installed in the annular groove.

6. A differential case drilling device as claimed in claim 2, characterized in that: The rotating assembly includes: a driven gear coaxially connected to the supporting tube, a driving gear meshingly connected to the driven gear, and a power source for driving the driving gear to rotate.

7. A differential case drilling device as claimed in claim 2, characterized in that: The cleaning assembly comprises: an annular tube fixedly installed on the drilling machine, an air guide tube connecting the annular tube and a fixed tube, and an air jet head plugged and installed on the annular tube.

8. A differential case drilling device as claimed in claim 4, characterized in that: The grinding assembly comprises: a grinding cylinder and a rotating unit for driving the grinding cylinder to rotate; The rotating unit includes: a mounting plate fixedly mounted on the end of the connecting rod, a fixing rod fixedly mounted on the mounting plate, a sleeve slidably mounted on the fixing rod, a movable block slidably mounted in the sleeve, a mounting tube fixedly mounted on the movable block, a guide groove four opened in the mounting tube, a mounting rod movably mounted in the mounting tube, a rolling element three rotatably mounted on the mounting rod, and a reset spring for driving the sleeve to reset.

9. A differential case drilling device as claimed in claim 6, characterized in that: The rotating assembly further includes a stirring blade coaxially connected to the driven gear.

10. The differential case drilling device according to claim 1, characterized in that: The fixing mechanism further comprises: a fixing tube, an extrusion rod slidably mounted in the fixing tube, an extrusion block fixedly mounted on the end of the extrusion rod, and a linkage spring fixedly mounted between the extrusion rod and the fixing tube.

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