Piston oil hole drilling machine

Abstract

The utility model provides a piston oil hole drilling machine which is provided with a straight oil hole machining station and an inclined oil hole machining station and comprises a rack, a clamping and transferring mechanism, a straight oil hole drilling mechanism, an inclined oil hole drilling mechanism and a guide mechanism. The clamping and transferring mechanism comprises a clamping unit and a station transferring module, the clamping unit is used for placing and clamping the piston, the clamping unit is arranged on a sliding block of the station transferring module, and the station transferring module is used for driving the clamping unit to move to a straight oil hole machining station and an inclined oil hole machining station; the straight oil hole drilling mechanism is located at the straight oil hole machining station. The inclined oil hole drilling mechanism is located at the inclined oil hole machining station. The guiding mechanism is used for guiding the piston on the clamping unit. Compared with the prior art, the piston oil hole drilling machine has the advantages that the influence of human factors can be reduced, the machining efficiency is improved, and the consistency of product quality is ensured.

Description

Technical Field

[0001] This utility model relates to the field of piston machining technology, and in particular to a piston oil hole drilling machine. Background Technology

[0002] The piston is a reciprocating component in the cylinder block of a car engine. Currently, with the development of car engine technology, in order to improve engine performance, such as... Figure 1 As shown, the piston cavity is generally designed with a straight oil hole 1 and an oblique oil hole 2, so that the engine oil can continuously enter the piston oil passage and carry away the heat of the combustion chamber at the top of the piston. Typical piston products are usually designed with two straight oil holes 1 and two oblique oil holes 2.

[0003] Currently, in piston machining production lines, most manufacturers still use manual bench drills to drill the straight oil hole 1 and the inclined oil hole 2. This requires two operators to operate two drills simultaneously to machine the straight oil hole 1 and the inclined oil hole 2 on the piston. This machining method has low production efficiency and wastes manpower and resources. In addition, this machining method is affected by the operator's skill level, resulting in poor drilling quality stability. It is very easy to have missed drilling or incorrect drilling (incorrect drilling diameter / depth), which can easily lead to product scrap, affect product yield, and increase piston machining costs.

[0004] With technological advancements, pistons with offset straight oil holes (not aligned with the bottom hole center) are becoming increasingly common, and now they can only be machined using milling machines, which undoubtedly increases the cost of machining a single piston. Utility Model Content

[0005] Existing technologies for machining piston oil holes rely on manual bench drills, resulting in low efficiency, high labor costs, and significant susceptibility to human error, leading to product scrap, reduced yield, and increased processing costs. This invention provides a piston oil hole drilling machine equipped with a clamping and transport mechanism, a straight oil hole drilling mechanism, and an inclined oil hole drilling mechanism. Utilizing the clamping and transport mechanism and the two drilling mechanisms, it achieves precise machining of straight and inclined oil holes within the piston cavity. This eliminates reliance on operator skills, reduces the impact of human error, improves processing efficiency, ensures consistent product quality, and increases product yield.

[0006] A piston oil hole drilling machine has a straight oil hole machining station and an inclined oil hole machining station. The piston oil hole drilling machine includes a frame, a clamping and transfer mechanism, a straight oil hole drilling mechanism, an inclined oil hole drilling mechanism, and a guiding mechanism.

[0007] The clamping and transfer mechanism is mounted on the frame. The clamping and transfer mechanism includes a clamping unit and a station transfer module. The clamping unit is used to place the piston and clamp the piston. The clamping unit is mounted on the slider of the station transfer module. The station transfer module is used to drive the clamping unit to move to the straight oil hole processing station and the inclined oil hole processing station.

[0008] The straight oil hole drilling mechanism is mounted on the frame and located at the straight oil hole processing station;

[0009] The inclined oil hole drilling mechanism is mounted on the frame and located at the inclined oil hole processing station;

[0010] The guiding mechanism is disposed on the frame and is used to guide the piston on the clamping unit.

[0011] Preferably, the clamping and transfer mechanism further includes a rotary table, and the clamping unit is mounted on the slider of the workstation transfer module via the rotary table.

[0012] Preferably, the clamping and transfer mechanism further includes a sprayer, which is connected to the slider of the station transfer module via a bracket. The sprayer is used to lubricate and cool the drill bit of the straight oil hole drilling mechanism or the inclined oil hole drilling mechanism.

[0013] Preferably, the bracket is also provided with a detection switch.

[0014] Preferably, along the movable direction of the workstation transfer module, the guiding mechanism is located at one end of the clamping and transferring mechanism;

[0015] The guiding mechanism includes a guiding linear drive unit and a guiding pin;

[0016] The movable direction of the guiding linear drive unit is the same as the movable direction of the workstation transfer module;

[0017] The guide pin is disposed on the sliding part of the guiding linear drive unit, and the guide pin is used to insert into the pin hole of the piston to guide the piston.

[0018] Preferably, the guiding mechanism further includes a lifting adjustment unit, and the guiding pin is disposed on the sliding part of the guiding linear drive unit through the lifting adjustment unit. The guiding pin is disposed on the lifting part of the lifting adjustment unit.

[0019] Preferably, the straight oil hole drilling mechanism includes an adjustable column and a straight oil hole drill bit;

[0020] The adjustable column is mounted on the frame;

[0021] The straight oil hole drill bit is mounted on the sliding assembly of the adjustable column.

[0022] Preferably, the inclined oil hole drilling mechanism includes an inclined oil hole drilling shaft adjusting slide and an inclined oil hole drilling tool;

[0023] The inclined oil hole drilling shaft adjustment slide is mounted on the frame;

[0024] The inclined oil hole drill bit is inclined, and the inclined oil hole drill bit is mounted on the slider of the inclined oil hole drill shaft adjustment slide via an inclined oil hole drill shaft angle adjustment turntable. The inclined oil hole drill shaft angle adjustment turntable is used to adjust the inclination angle of the drill shaft of the inclined oil hole drill bit.

[0025] Preferably, the inclined oil hole drilling mechanism further includes a broken tool detection sensor, which is set corresponding to the drill bit of the inclined oil hole drill tool to detect the drill bit of the inclined oil hole drill tool and detect the breakage of the drill bit when drilling the inclined oil hole, so as to prevent the subsequent processing of the piston from having insufficient oil hole depth in batches.

[0026] Preferably, the frame includes a frame body, a table panel, and a protective cover. The table panel and the protective cover are disposed on the frame body, and the clamping and transferring mechanism, the straight oil hole drilling mechanism, the inclined oil hole drilling mechanism, and the guiding mechanism are disposed on the table panel.

[0027] The frame is equipped with a collection box located below the clamping and transferring mechanism.

[0028] A collection box is provided on the protective cover.

[0029] Compared with the prior art, the present invention provides a piston oil hole drilling machine, which has a straight oil hole machining station and an inclined oil hole machining station. The piston oil hole drilling machine includes a frame, a clamping and transfer mechanism, a straight oil hole drilling mechanism, an inclined oil hole drilling mechanism, and a guiding mechanism. The clamping and transfer mechanism is disposed on the frame and includes a clamping unit and a station transfer module. The clamping unit is used to place and clamp the piston. The clamping unit is disposed on the slider of the station transfer module. The station transfer module is used to drive the clamping unit to move to the straight oil hole machining station and the inclined oil hole machining station. The straight oil hole drilling mechanism is disposed on the frame and located at the straight oil hole machining station. The inclined oil hole drilling mechanism is disposed on the frame and located at the inclined oil hole machining station. The guiding mechanism is disposed on the frame and is used to guide the piston on the clamping unit. The piston oil hole drilling machine is equipped with a straight oil hole machining station and an inclined oil hole machining station. During piston drilling, the piston can be transferred to the straight oil hole machining station and the inclined oil hole machining station via the clamping and transfer mechanism, and then drilled using the straight oil hole drilling mechanism and the inclined oil hole drilling mechanism respectively. The precise machining of the straight and inclined oil holes in the piston cavity is achieved through the cooperation of the mechanical structures, reducing reliance on operator skills, minimizing the impact of human factors, improving processing efficiency, ensuring product quality consistency, increasing product yield, and reducing piston processing costs. In addition, a guiding mechanism is provided. Before drilling, the piston on the clamping and transfer mechanism can be guided by the guiding mechanism, thereby improving the accuracy of subsequent drilling and improving product processing quality. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional structural diagram of a piston in the prior art;

[0032] Figure 2 A three-dimensional structural schematic diagram of a piston oil hole drilling machine provided in one embodiment;

[0033] Figure 3 for Figure 2 A three-dimensional structural diagram of some of the components shown;

[0034] Figure 4A three-dimensional structural schematic diagram of a clamping and transferring mechanism provided in one embodiment;

[0035] Figure 5 A three-dimensional structural schematic diagram of a guiding mechanism provided in one embodiment;

[0036] Figure 6 A three-dimensional structural schematic diagram of a straight oil hole drilling mechanism provided in one embodiment;

[0037] Figure 7 A three-dimensional structural schematic diagram of an inclined oil hole drilling mechanism provided in one embodiment;

[0038] Figure 8 A three-dimensional structural diagram of a rack provided in one embodiment;

[0039] Figure 9 for Figure 8 The diagram shows a three-dimensional structure of the rack from another angle. Detailed Implementation

[0040] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0041] It should be noted that when a component is referred to as being "fixed to", "mounted to", or "set on" another component, it can be directly on or indirectly set on the other component; when a component is "connected" to another component, or when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0042] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0043] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0044] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0045] This utility model provides a piston oil hole drilling machine, which has a straight oil hole machining station and an inclined oil hole machining station. The piston oil hole drilling machine includes a frame, a clamping and transfer mechanism, a straight oil hole drilling mechanism, an inclined oil hole drilling mechanism, and a guiding mechanism. The clamping and transfer mechanism is disposed on the frame and includes a clamping unit and a station transfer module. The clamping unit is used to place and clamp the piston. The clamping unit is disposed on the slider of the station transfer module. The station transfer module is used to drive the clamping unit to move to the straight oil hole machining station and the inclined oil hole machining station. The straight oil hole drilling mechanism is disposed on the frame and located at the straight oil hole machining station. The inclined oil hole drilling mechanism is disposed on the frame and located at the inclined oil hole machining station. The guiding mechanism is disposed on the frame and is used to guide the piston on the clamping unit. The piston oil hole drilling machine is equipped with a straight oil hole machining station and an inclined oil hole machining station. During piston drilling, the piston can be transferred to the straight oil hole machining station and the inclined oil hole machining station via the clamping and transfer mechanism, and then drilled using the straight oil hole drilling mechanism and the inclined oil hole drilling mechanism respectively. The precise machining of the straight and inclined oil holes in the piston cavity is achieved through the cooperation of the mechanical structures, reducing reliance on operator skills, minimizing the impact of human factors, improving processing efficiency, ensuring product quality consistency, increasing product yield, and reducing piston processing costs. In addition, a guiding mechanism is provided. Before drilling, the piston on the clamping and transfer mechanism can be guided by the guiding mechanism, thereby improving the accuracy of subsequent drilling and improving product processing quality.

[0046] Please refer to the following: Figures 2 to 9In one embodiment, a piston oil hole drilling machine 100 is provided, which is mainly used to process straight oil holes and oblique oil holes on piston 200.

[0047] The piston oil hole drilling machine 100 has a straight oil hole machining station 101 and an inclined oil hole machining station 102. The piston oil hole drilling machine 100 includes a frame 10, a clamping and transferring mechanism 20, a straight oil hole drilling mechanism 30, an inclined oil hole drilling mechanism 40, and a guiding mechanism 50. The clamping and transferring mechanism 20 is mainly used to place and clamp the piston 200 and to transfer the piston 200 between the various stations. The straight oil hole drilling mechanism 30 is used to drill straight oil holes in the inner cavity of the piston 200, the inclined oil hole drilling mechanism 40 is used to drill inclined oil holes in the inner cavity of the piston 200, and the guiding mechanism 50 is used to adjust and guide the position angle of the piston 200.

[0048] The clamping and transfer mechanism 20 is mounted on the frame 10. The clamping and transfer mechanism 20 includes a clamping unit 21 and a station transfer module 22. The clamping unit 21 is used to place the piston 200 and clamp the piston 200. The clamping unit 21 is mounted on the slider 221 of the station transfer module 22. The station transfer module 22 is used to drive the clamping unit 21 to move to the straight oil hole processing station 101 and the oblique oil hole processing station 102.

[0049] The straight oil hole drilling mechanism 30 is mounted on the frame 10 and located at the straight oil hole processing station 101. The inclined oil hole drilling mechanism 40 is mounted on the frame 10 and located at the inclined oil hole processing station 102. The guiding mechanism 50 is mounted on the frame 10 and is used to guide the piston 200 on the clamping unit 21.

[0050] In one embodiment, the processing steps of the piston oil hole drilling machine 100 are as follows: The operator first confirms the model of the piston 200 to be processed, and then calls the pre-set program parameters. The operator places the piston 200 on the clamping unit 21, and after pressing the program start button, the station transfer module 22 drives the clamping unit 21 to move forward. First, the piston 200 in the clamping unit 21 is guided by the guiding mechanism 50, and then the clamping unit 21 clamps the piston 200. Then, the station transfer module 22 drives the clamping unit 21 to the inclined oil hole processing station 102, and the inclined oil hole drilling mechanism 40 performs inclined oil hole drilling on the piston 200 on the clamping unit 21. After the oblique oil hole of piston 200 is machined, the station transfer module 22 then moves the clamping unit 21 to the straight oil hole machining station 101. The straight oil hole drilling mechanism 30 then performs straight oil hole drilling on piston 200 on clamping unit 21, thereby completing the automatic machining of oblique and straight oil holes of piston 200. The station in piston oil hole drilling machine 100 used for guiding piston 200 can be located in the same position as other stations. For example, the station used for guiding piston 200 can be in the same position as the oblique oil hole machining station 102. Therefore, during machining, the guiding mechanism 50 first moves to the oblique oil hole machining station 102 for guidance, and then the oblique oil hole drilling mechanism 40 performs drilling. Of course, the station in the piston oil hole drilling machine 100 used for guiding the piston 200 can be located in a different position from other stations. Thus, during processing, the station transfer module 22 first moves the clamping unit 21 to the guiding station for guidance, and then the station transfer module 22 moves the clamping unit 21 to the required processing station. Furthermore, the processing sequence of the straight oil hole and the oblique oil hole of the piston 200 can be selected according to actual needs. That is, the station transfer module 22 can first move the clamping unit 21 to the oblique oil hole processing station 102 for oblique oil hole processing, or it can first move the clamping unit 21 to the straight oil hole processing station 101 for straight oil hole processing.

[0051] The piston oil hole drilling machine 100 provided in this embodiment uses the clamping and transferring mechanism 20 to clamp and move the piston 200, the guiding mechanism 50 to guide the piston 200, and the straight oil hole drilling mechanism 30 and the oblique oil hole drilling mechanism 40 to drill holes in the piston 200. The precise machining of straight and oblique oil holes in the inner cavity of the piston 200 is achieved through the cooperation between the mechanical structures. The piston oil hole drilling machine 100 has a small footprint and is convenient for changeover and adjustment. It can be placed in the location where a bench drill was originally placed on the production line, allowing one operator to complete multiple processing steps of the product simultaneously, saving the need for dedicated drilling operators and contributing to lean production in the workshop.

[0052] Preferably, in one embodiment, the clamping and transferring mechanism 20 further includes a rotary table 23, and the clamping unit 21 is mounted on the slider 221 of the workstation transfer module 22 via the rotary table 23. The rotary table 23 allows the clamping unit 21 to rotate, thereby adjusting the angle of the piston 200 on the clamping unit 21. This allows for the machining of oil holes at different positions of the piston 200 using a single drilling mechanism, reducing the need for a separate drilling mechanism.

[0053] Specifically, in one embodiment, the workstation transfer module 22 uses an electric slide table.

[0054] Specifically, in one embodiment, the rotary table 23 is an electric rotary table, which is fixed to the slider 221 of the workstation transfer module 22 by screws. The control program gives the servo motor of the workstation transfer module 22 motion commands to realize the processing workstation conversion function of the piston 200.

[0055] Specifically, in one embodiment, the clamping unit 21 is a three-jaw pneumatic chuck, which is fixed to the rotary shaft of the rotary table 23 by screws. The control program sends motion commands to the servo motor of the rotary table 23, thereby realizing the rotation of the piston 200.

[0056] Specifically, in one embodiment, the workstation transfer module 22 is mounted on the frame 10 via a mounting bracket 24. The mounting bracket 24 includes two mounting supports 241 and a connecting rod 242 connecting the two mounting supports 241. The two mounting supports 241 are spaced apart from each other and are respectively connected to the workstation transfer module 22. The mounting supports 241 and the connecting rod 242 form an integral frame structure, which is finally fixed to the designed position on the frame 10 by screws. More specifically, the mounting bracket 241 includes two horizontal frames 2411 and two vertical frames 2412. The two horizontal frames 2411 are spaced apart along the height direction, and the bottom horizontal frame 2411 is fixed to the bottom of the workstation transfer module 22 by screws. The two vertical frames 2412 are spaced apart along the width direction, and the two ends of the vertical frames 2412 are respectively connected to the two horizontal frames 2411. The mounting bracket 241 has an overall rectangular frame structure.

[0057] The clamping and transferring mechanism 20 can reliably clamp the piston 200, rotate at a preset angle, and switch between straight and oblique oil hole drilling positions. The overall assembly has strong load-bearing capacity, high positioning accuracy, and large driving force, which can meet the processing requirements of offset straight oil holes.

[0058] Preferably, in one embodiment, the clamping and transferring mechanism 20 further includes a sprayer (not shown), which is connected to the slider 221 of the workstation transfer module 22 via a bracket 25. The sprayer is used to lubricate and cool the drill bit of the straight oil hole drilling mechanism 30 or the inclined oil hole drilling mechanism 40. During processing, the control program can instruct the control valve of the sprayer to spray a medium onto the drill bit, thereby achieving lubrication and cooling of the drill bit and extending its service life. For example, after the drill bit retracts into position, the sprayer activates for 0.2 seconds to lubricate the drill bit, thus extending its service life.

[0059] Specifically, in one embodiment, the bracket 25 includes a first bracket 251 and a second bracket 252 connected to the first bracket 251. The first bracket 251 is arranged horizontally, and the second bracket 252 is arranged vertically. The sprayer is arranged on the second bracket 252. The first bracket 251 is fixed to the slider 221 of the workstation transfer module 22 by screws.

[0060] like Figure 4 As shown, in one embodiment, the piston 200 is a piston blank, consisting of only half a piston structure. Preferably, in one embodiment, the support 25 is also equipped with a detection switch 253. The detection switch 253 can detect the position of the piston 200 and output a corresponding signal to prevent the operator from placing the piston 200 in the wrong direction, resulting in a product with only one side having an angled oil hole, which would lead to a processing error. For example, the detection switch can detect whether the placement angle of the piston 200 is correct. If the detection switch feedback signal is abnormal, the rotary table 23 can automatically rotate 180° before the clamping and transfer mechanism 20 proceeds with subsequent work. The detection switch 253 allows for detection of the piston 200's placement direction before drilling, thereby preventing misalignment of the oil hole during subsequent drilling and reducing the scrap rate.

[0061] Preferably, in one embodiment, along the movable direction of the workstation transfer module 22, the guiding mechanism 50 is located at one end of the clamping and transferring mechanism 20. The guiding mechanism 50 includes a guiding linear drive unit 51 and a guiding pin 52. The movable direction of the guiding linear drive unit 51 is the same as the movable direction of the workstation transfer module 22. The guiding pin 52 is disposed on the sliding portion of the guiding linear drive unit 51 and is used to insert into the pin hole of the piston 200 to guide the piston 200. That is, in this embodiment, the guiding mechanism 50 specifically achieves the position and angle correction of the piston 200 by cooperating with the pin hole of the piston 200. Furthermore, the guiding mechanism 50 is a movable structure, and the guiding linear drive unit 51 can drive the guiding pin 52 to move back and forth, thereby achieving contact and separation with the piston 200.

[0062] Preferably, in one embodiment, the guide pin 52 has a tapered structure, which can be adapted to different pistons 200, thereby improving the versatility of the guide mechanism 50.

[0063] Preferably, in one embodiment, the guiding mechanism 50 further includes a lifting adjustment unit 53. The guiding pin 52 is disposed on the sliding portion of the guiding linear drive unit 51 via the lifting adjustment unit 53, and the guiding pin 52 is disposed on the lifting portion of the lifting adjustment unit 53. By providing the lifting adjustment unit 53, the position and height of the guiding pin 52 can be adjusted, thereby adapting to different pistons 200 for guiding purposes and improving the versatility of the guiding mechanism 50.

[0064] The lifting adjustment unit 53 can be a manual adjustment structure or an electric adjustment structure. For example, the lifting adjustment unit 53 can be a manual slide or an electric slide.

[0065] Specifically, in one embodiment, the base of the guiding linear drive unit 51 is fixed with a fixing plate 54 and a support block 55, and the lifting adjustment unit 53 is fixed to the sliding part of the guiding linear drive unit 51 by screws.

[0066] Specifically, in one embodiment, the guiding linear drive unit 51 is a cylinder.

[0067] Specifically, in one embodiment, the guide pin 52 is fixed to the lifting portion of the lifting adjustment unit 53 by means of a guide pin fixing fine-tuning fixing plate 56. More specifically, the guide pin 52 is fixed to the guide pin fixing fine-tuning fixing plate 56 by screws, the guide pin fixing fine-tuning fixing plate 56 is fixed to the lifting portion of the lifting adjustment unit 53 by screws, and the guide mechanism 50 assembly is finally fixed to the designed position of the frame 10 by screws.

[0068] The main function of the guiding mechanism 50 is to guide the pin hole of the piston 200 to be processed, ensure the consistency of the oil hole position of the piston 200 to be processed, and ensure the consistency of the drilling position of the piston 200.

[0069] Preferably, in one embodiment, the straight oil hole drilling mechanism 30 includes an adjustable column 31 and a straight oil hole drill bit 32. The adjustable column 31 is mounted on the frame 10, and the straight oil hole drill bit 32 is mounted on a sliding assembly of the adjustable column 31. The adjustable column 31 allows for vertical adjustment of the straight oil hole drill bit 32, thereby adjusting its height.

[0070] Specifically, in one embodiment, the drilling shaft rotation function of the straight oil hole drill 32 is driven by a three-phase asynchronous motor, and the feed function is driven by a servo motor. The drilling process is dry cutting to prevent chips (aluminum chips) from adhering to the inner wall surface of the oil passage.

[0071] Specifically, in one embodiment, the outer shell of the straight oil hole drilling shaft 321 of the straight oil hole drill 32 is fixed to the sliding assembly of the adjustable column 31 by a clamp, thereby realizing the vertical displacement adjustment of the straight oil hole drilling shaft 321.

[0072] Preferably, in one embodiment, the straight oil hole drill bit 32 is provided with a synchronous multi-spindle device 322, and the inner hole of the synchronous multi-spindle device 322 is fixed to the outer circle of the feed shaft of the straight oil hole drill bit 321 by an elastic retainer.

[0073] When the straight oil hole drill bit 32 is running, the control program sends commands to the three-phase asynchronous motor that drives the drill bit to rotate, thereby realizing the rotation function of the drill bit. The control program also sends commands to the servo motor that drives the straight oil hole drilling shaft 321 to feed, thereby realizing the feed function of the drill bit.

[0074] Specifically, in one embodiment, the straight oil hole drilling mechanism 30 is fixed to the designed position of the frame 10 by screws.

[0075] Preferably, in one embodiment, the inclined oil hole drilling mechanism 40 includes an inclined oil hole drilling shaft adjusting slide 41 and an inclined oil hole drill bit 42, the inclined oil hole drilling shaft adjusting slide 41 being mounted on the frame 10. The inclined oil hole drill bit 42 is inclined, and is mounted on the slider of the inclined oil hole drilling shaft adjusting slide 41 via an inclined oil hole drilling angle adjusting turntable 43, the inclined oil hole drilling shaft adjusting turntable 43 being used to adjust the inclination angle of the drilling shaft of the inclined oil hole drill bit 42. The height position of the inclined oil hole drill bit 42 can be adaptively adjusted by the inclined oil hole drilling shaft adjusting slide 41, while the inclination angle of the inclined oil hole drill bit 42 can be adaptively adjusted by the inclined oil hole drilling angle adjusting turntable 43, thereby enabling more accurate machining of the inclined oil hole of the piston 200, and also adapting to the machining of different types of pistons 200.

[0076] Specifically, in one embodiment, the inclined oil hole drilling angle adjustment turntable 43 is an electric rotary turntable.

[0077] Specifically, in one embodiment, the inclined oil hole drilling shaft adjusting slide 41 can adopt a manual adjustment structure or an electric adjustment structure. For example, the inclined oil hole drilling shaft adjusting slide 41 can be a manual slide or an electric slide.

[0078] Specifically, in one embodiment, the drilling shaft of the inclined oil hole drill 42 is fixed to the rotary shaft of the inclined oil hole drilling angle adjusting turntable 43 by a bracket, the base of the inclined oil hole drilling angle adjusting turntable 43 is fixed to the slider of the inclined oil hole drilling shaft adjusting slide 41 by screws, the column of the inclined oil hole drilling shaft adjusting slide 41 is fixed to the fixed base 44 by screws, and the complete set of components is finally fixed to the designed position of the frame 10 by screws.

[0079] Specifically, in one embodiment, the drilling shaft rotation function of the inclined oil hole drill 42 is driven by a three-phase asynchronous motor, and the feed function is driven by a servo motor. The drilling process is dry cutting to prevent chips (aluminum chips) from adhering to the inner wall surface of the oil passage.

[0080] More preferably, in one embodiment, a transverse slide can also be provided between the inclined oil hole drilling angle adjusting turntable 43 and the inclined oil hole drilling shaft adjusting slide 41.

[0081] Preferably, in one embodiment, the inclined oil hole drilling mechanism 40 further includes a broken tool detection sensor 45. The broken tool detection sensor 45 is configured corresponding to the drill bit of the inclined oil hole drill 42 to detect the breakage of the drill bit during the drilling of the inclined oil hole, preventing insufficient oil hole depth in subsequent piston machining. During machining, after the inclined oil hole machining is completed and the drill bit is retracted, the control program automatically reads the feedback signal from the broken tool detection sensor 45. A signal indicates that the drill bit tip is intact and machining can continue. Otherwise, an alarm signal is output to prompt the operator to replace the inclined oil hole drill bit, preventing batches of scrap.

[0082] Specifically, in one embodiment, the broken tool detection sensor 45 can be mounted on the inclined oil hole drill bit 42 or the inclined oil hole drilling angle adjustment turntable 43 via a bracket, as long as the broken tool detection sensor 45 can detect the position of the tip of the inclined oil hole drill bit.

[0083] Preferably, in one embodiment, the frame 10 includes a frame body 11, a table panel 12, and a protective cover 13. The table panel 12 and the protective cover 13 are disposed on the frame body 11, and the clamping and transferring mechanism 20, the straight oil hole drilling mechanism 30, the inclined oil hole drilling mechanism 40, and the guiding mechanism 50 are disposed on the table panel 12.

[0084] More preferably, in one embodiment, a collection box 14 is provided inside the frame 11, located below the clamping and transferring mechanism 20. The collection box 14 can be a pull-out structure, allowing operators to clean it up promptly if too much debris (aluminum shavings) accumulates. A collection box 15 is provided on the protective cover 13, specifically, the collection box 15 can be hung on the outside of the protective cover 13 via a groove.

[0085] Specifically, in one embodiment, the protective cover 13 is provided with a plurality of protective doors 131, which are hinged to the protective cover 13.

[0086] Preferably, in one embodiment, an operation panel display screen 132 may be provided on the protective cover 13.

[0087] More preferably, in one embodiment, a side chip baffle 16 is also provided on the inner side of the protective cover 13, and the side chip baffle 16 is located near the drilling station of the piston oil hole drilling machine 100.

[0088] Specifically, in one embodiment, the bottom of the frame 11 is also provided with a support foot 17. The table panel 12, the protective cover 13, the side chip baffle 16, and the support foot 17 are all fixed to the frame 11 with screws.

[0089] Preferably, in one embodiment, the frame 11 is provided with a pneumatic component cabinet door 111 and an electrical cabinet door 112 around its perimeter, and the pneumatic component cabinet door 111 and the electrical cabinet door 112 are fixed to the frame 11 by hinges.

[0090] Specifically, in one embodiment, the frame 11 may be a welded profile structure.

[0091] In one embodiment, the motion control system of the piston oil hole drilling machine 100 consists of five servo motors, two three-phase asynchronous motors, drivers, frequency converters, a motion control PLC, and a control program, enabling precise control of the machining process with an accuracy of ±0.01mm. The control program includes functions such as motion control of each axis, formula parameter setting, alarm output, and machining record storage.

[0092] Understandably, in the current technology, drilling holes in pistons is done manually using a bench drill. This method has the following drawbacks: the operator manually operates the bench drill arm to lower the drill bit for drilling oil holes, which is physically demanding. Working continuously for a long time makes it difficult to ensure product consistency and easily leads to missed drilling, incorrect drilling, and other problems, resulting in product scrap.

[0093] The piston oil hole drilling machine 100 provided in this application utilizes a high-rigidity product clamping and transfer mechanism and two sets of drilling mechanisms to precisely machine straight and oblique oil holes in the piston cavity. This eliminates reliance on operator skills, improves processing efficiency, and ensures consistent product quality. During production, the operator confirms the piston model to be machined and calls the pre-set program parameters. The piston to be machined is placed in the cavity of the clamping unit 21, and the program start button is pressed to achieve fully automatic machining of the oil holes in the piston cavity.

[0094] In one embodiment, the machining steps of the piston oil hole drilling machine 100 are as follows:

[0095] (1) Workpiece model confirmation and clamping: The operator confirms the model of piston 200 to be processed and calls the pre-set program parameters. The piston 200 to be processed is placed in the inner cavity of the clamping unit 21 (the fixture is adjusted according to the actual workpiece), and the program start button is pressed. If the feedback signal of the detection switch 253 is normal, the guiding mechanism 50 automatically moves forward into place, and the station transfer module 22 drives the clamping unit 21 to automatically move backward from L0 (which can be the straight oil hole processing station 101) to L1 (which can be the inclined oil hole processing station 102). After the piston 200 pin hole is guided, the clamping unit 21 automatically closes, and the guiding mechanism 50 automatically moves backward into place.

[0096] If the feedback signal from the detection switch 253 is abnormal, the rotary table 23 will automatically rotate 180°, and the station transfer module 22 will drive the clamping unit 21 to automatically move from L0 to L1.

[0097] (2) Machining the oblique oil hole: Depending on the type of piston 200 that needs to be machined, there are three situations:

[0098] ① There are two inclined oil holes on both sides of the piston. The inclined oil hole drilling mechanism 40 starts its rotary motor and moves from the starting point L2 to the program-set position L3 at a speed of V1 at a pre-programmed speed S1. After reaching the position, it moves slowly to the program-set position L4 at a speed of V2, with a pause time T1. After the pause time T1, it slowly retracts to position L3 at a speed of V2, and then quickly retracts to position L2 at a speed of V1. The rotary table 23 at the bottom of the clamping unit 21 automatically rotates 180°. After retracting to the correct position, the program runs again to complete the automatic machining of the second inclined oil hole. The inclined oil hole drill bit retracts to position L2, and the station transfer module 22 drives the clamping unit 21 to automatically move forward to L0.

[0099] ② There is one inclined oil hole on the left side of the piston. The inclined oil hole drilling mechanism 40 starts with a rotary motor and moves quickly from the starting point L2 to the program-set position L3 at a speed of V1 at a pre-set speed S1. It then moves slowly to the program-set position L4 at a speed of V2, with a pause time T1. After the pause time T1, it slowly moves back to position L3 at a speed of V2 and quickly moves back to position L2 at a speed of V1. The station transfer module 22 drives the clamping unit 21 to automatically move forward to L0.

[0100] ③ The product has one angled oil hole on the right side. The rotary table 23 at the bottom of the clamping unit 21 automatically rotates 180°. After rotating into position, the rotary motor of the angled oil hole drilling mechanism 40 starts and moves from the starting point L2 to the program-set position L3 at a speed of V1 at a pre-set speed S1. Then, it moves slowly to the program-set position L4 at a speed of V2, with a pause time T1. After the pause time T1, it slowly moves back to position L3 at a speed of V2 and quickly moves back to position L2 at a speed of V1. The station transfer module 22 then drives the clamping unit 21 to automatically move forward to L0.

[0101] (3) Machining straight oil holes: While the station transfer module 22 drives the clamping unit 21 to move forward automatically, the straight oil hole drilling mechanism 30 starts. At the programmed speed S2, the station transfer module 22 drives the clamping unit 21 to position L0. The straight oil hole drilling mechanism 30 moves quickly from the starting point L5 to the programmed position L6 at speed V3. After reaching the position, it moves slowly to the programmed position L7 at speed V4. There is a pause time T2. After the pause time T2 is up, it quickly retreats to position L5 at speed V3. After reaching L5, the clamping unit 21 automatically opens, and the operator replaces the piston 200 to continue machining.

[0102] The piston oil hole drilling machine 100 is fully automated, capable of automatically machining straight and angled oil holes in a single setup. It has a small footprint, is easy to operate, has high processing efficiency, and is easy to maintain. It can complete the machining of straight and angled oil holes for a piston in just 25 seconds. For different piston models, quick switching can be achieved by adjusting the jaw position and changing the formula. The piston oil hole drilling machine 100 eliminates the influence of human factors on product quality, achieving autonomous and controllable processing. The piston oil hole drilling machine 100 can be installed on a production line, allowing one operator to complete multiple processing steps simultaneously, eliminating the need for a separate operator for drilling.

[0103] The above description is merely an embodiment of this utility model. It should be noted that those skilled in the art can make improvements without departing from the inventive concept of this utility model, but these improvements all fall within the protection scope of this utility model.

Claims

1. A piston oil hole drilling machine, characterized in that, The piston oil hole drilling machine has a straight oil hole machining station and an inclined oil hole machining station. It includes a frame, a clamping and transfer mechanism, a straight oil hole drilling mechanism, an inclined oil hole drilling mechanism, and a guiding mechanism. The clamping and transfer mechanism is mounted on the frame. The clamping and transfer mechanism includes a clamping unit and a station transfer module. The clamping unit is used to place the piston and clamp the piston. The clamping unit is mounted on the slider of the station transfer module. The station transfer module is used to drive the clamping unit to move to the straight oil hole processing station and the inclined oil hole processing station. The straight oil hole drilling mechanism is mounted on the frame and located at the straight oil hole processing station; The inclined oil hole drilling mechanism is mounted on the frame and located at the inclined oil hole processing station; The guiding mechanism is disposed on the frame and is used to guide the piston on the clamping unit.

2. The piston oil hole drilling machine according to claim 1, characterized in that, The clamping and transfer mechanism also includes a rotary table, and the clamping unit is mounted on the slider of the workstation transfer module via the rotary table.

3. The piston oil hole drilling machine according to claim 1, characterized in that, The clamping and transfer mechanism also includes a sprayer, which is connected to the slider of the station transfer module via a bracket. The sprayer is used to lubricate and cool the drill bit of the straight oil hole drilling mechanism or the inclined oil hole drilling mechanism.

4. The piston oil hole drilling machine according to claim 3, characterized in that, The bracket is also equipped with a detection switch.

5. The piston oil hole drilling machine according to claim 1, characterized in that, Along the movable direction of the workstation transfer module, the guiding mechanism is located at one end of the clamping and transferring mechanism; The guiding mechanism includes a guiding linear drive unit and a guiding pin; The movable direction of the guiding linear drive unit is the same as the movable direction of the workstation transfer module; The guide pin is disposed on the sliding part of the guiding linear drive unit, and the guide pin is used to insert into the pin hole of the piston to guide the piston.

6. The piston oil hole drilling machine according to claim 5, characterized in that, The guiding mechanism further includes a lifting adjustment unit, and the guiding pin is disposed on the sliding part of the guiding linear drive unit through the lifting adjustment unit. The guiding pin is disposed on the lifting part of the lifting adjustment unit.

7. The piston oil hole drilling machine according to claim 1, characterized in that, The straight oil hole drilling mechanism includes an adjustable column and a straight oil hole drill bit. The adjustable column is mounted on the frame; The straight oil hole drill bit is mounted on the sliding assembly of the adjustable column.

8. The piston oil hole drilling machine according to claim 1, characterized in that, The inclined oil hole drilling mechanism includes an inclined oil hole drilling shaft adjusting slide and an inclined oil hole drilling tool. The inclined oil hole drilling shaft adjustment slide is mounted on the frame; The inclined oil hole drill bit is inclined, and the inclined oil hole drill bit is mounted on the slider of the inclined oil hole drill shaft adjustment slide via an inclined oil hole drill shaft angle adjustment turntable. The inclined oil hole drill shaft angle adjustment turntable is used to adjust the inclination angle of the drill shaft of the inclined oil hole drill bit.

9. The piston oil hole drilling machine according to claim 8, characterized in that, The inclined oil hole drilling mechanism also includes a broken tool detection sensor, which is set corresponding to the drill bit of the inclined oil hole drill tool to detect the broken tool.

10. The piston oil hole drilling machine according to claim 1, characterized in that, The frame includes a frame body, a table panel, and a protective cover. The table panel and the protective cover are mounted on the frame body. The clamping and transfer mechanism, the straight oil hole drilling mechanism, the inclined oil hole drilling mechanism, and the guiding mechanism are mounted on the table panel. The frame is equipped with a collection box located below the clamping and transferring mechanism. A collection box is provided on the protective cover.

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