Full-automatic numerical control quenching equipment for pin shaft

Abstract

The application provides a pin shaft full-automatic numerical control quenching device, which comprises a feeding and discharging mechanism, a quenching mechanism and a circulating cooling mechanism, wherein the feeding and discharging mechanism is used for mounting a workpiece to be quenched to the quenching mechanism and taking the quenched workpiece from the quenching mechanism, and the circulating cooling mechanism supplies quenching liquid to the quenching mechanism and performs circulating cooling on the quenching liquid; the quenching mechanism comprises a quenching chamber, a mounting driving part, a heating temperature control part and a spraying cooling part. The pin shaft full-automatic numerical control quenching device provided by the application adopts automatic quenching of the pin shaft, and the transportation of the workpiece is not required manually in the process, so that the safety risk existing in manual transportation of the workpiece can be avoided, and the high efficiency is achieved.

Description

Technical Field

[0001] This invention relates to the field of heat treatment technology, and in particular to a fully automatic CNC quenching equipment for pin shafts. Background Technology

[0002] To improve the mechanical properties of the pin, heat treatment is usually performed. In the traditional heat treatment process, the workpiece (pin) heated to the quenching temperature is usually placed into the quenching liquid by hand. This manual quenching method is relatively inefficient, and the workpiece is prone to loosening and slipping during the transportation of the heated workpiece, which may endanger the worker's safety. Summary of the Invention

[0003] The purpose of this invention is to provide a fully automatic CNC quenching equipment for pin shafts, in order to solve the technical problems of low efficiency and safety associated with traditional manual heat treatment.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is: to provide a fully automatic CNC quenching equipment for pins, the fully automatic CNC quenching equipment for pins comprising:

[0005] The system includes a loading and unloading mechanism, a quenching mechanism, and a circulating cooling mechanism. The loading and unloading mechanism is used to install the workpiece to be quenched onto the quenching mechanism and to remove the quenched workpiece from the quenching mechanism. The circulating cooling mechanism supplies quenching fluid to the quenching mechanism and circulates and cools the quenching fluid.

[0006] The quenching mechanism includes a quenching chamber, a mounting drive unit, a heating and temperature control unit, and a spray cooling unit. A pneumatic sliding door is provided on one side of the quenching chamber, and a liquid collection tank is provided at the bottom of the quenching chamber. The mounting drive unit is located inside the quenching chamber. The workpiece to be quenched is mounted on the mounting drive unit. Under the drive of the mounting drive unit, the workpiece passes sequentially through the heating and temperature control unit and the spray cooling unit. The heating and temperature control unit heats the workpiece to the quenching temperature, and then it is cooled and quenched by the spray cooling unit. The quenching liquid sprayed by the spray cooling unit flows back to the circulating cooling mechanism through a pipe, is cooled by the circulating cooling mechanism, and is then transported back to the spray cooling unit.

[0007] In one embodiment, the mounting drive unit includes:

[0008] An adjustable platform is slidably disposed on the inner wall of the quenching chamber;

[0009] A first lead screw and slider mechanism is disposed between the upper and lower adjustment platform and the inner wall of the quenching chamber, and the first lead screw and slider mechanism controls the upper and lower positions of the upper and lower adjustment platform.

[0010] A clamping platform, which is slidably mounted on the upper and lower adjustment platform;

[0011] The second lead screw and slider mechanism is disposed between the clamping platform and the up-down adjustment platform, and the second lead screw and slider mechanism is used to control the movement of the clamping platform.

[0012] An upper push rod is disposed on the clamping platform;

[0013] A rotating device is disposed at the bottom of the vertical adjustment platform;

[0014] The lower push rod is connected to the rotating part of the rotating device, and the lower push rod cooperates with the upper push rod to clamp the workpiece.

[0015] In one embodiment, the heating temperature control unit includes:

[0016] An electromagnetic heating coil is fixed to the inner wall of the quenching chamber. During heating, the workpiece is located inside the coil.

[0017] A temperature sensor is disposed below the electromagnetic heating coil and is electrically connected to the mounting drive unit. The temperature sensor detects the temperature of the workpiece and controls the operation of the mounting drive unit based on the temperature value.

[0018] In one embodiment, the spray cooling section includes:

[0019] A cooling shroud, which is barrel-shaped, with the workpiece to be cooled and quenched located inside the cooling shroud;

[0020] A plurality of spray nozzles are evenly distributed inside the cooling shroud. The spray nozzles spray quenching liquid toward the center of the cooling shroud. The spray nozzles are equipped with electromagnetic valves.

[0021] Several baffle rings are disposed inside the cooling cover, and a through hole is provided at the center of the baffle ring. The through hole is the same size as the diameter of the workpiece. The baffle rings divide the cooling cover into multiple spray zones.

[0022] In one embodiment, the retaining ring is a cone shape with an upward convex shape, and a drain hole is provided at the connection position between the cooling cover and the retaining ring.

[0023] In one embodiment, the quenching chamber is provided with two sets of the mounting drive unit, the heating and temperature control unit, and the spray cooling unit.

[0024] In one embodiment, the loading and unloading mechanism includes a robot, a picking frame, a loading buffer platform, an unloading buffer platform, and an unloading frame. The robot is equipped with picking claws. The picking frame contains workpieces to be quenched. The unloading frame is used to hold quenched workpieces. After the robot takes a workpiece out of the picking frame, it places it on the loading buffer platform for position correction. After correction, the workpiece is then gripped by the robot and installed onto the mounting drive unit. After quenching, the workpiece is clamped by the robot and placed on the unloading buffer platform. After the workpiece is marked on the unloading buffer platform, it is gripped by the robot and placed into the unloading frame.

[0025] In one embodiment, the material-grabbing claw is a V-shaped electromagnet structure.

[0026] The above-described technical solutions in the embodiments of the present invention have at least the following technical effects or advantages:

[0027] The fully automatic CNC quenching equipment for pin shafts provided in this invention uses a loading and unloading mechanism to automatically feed the workpiece to be heat-treated into the quenching chamber of the quenching mechanism (at this time, the pneumatic sliding door opens automatically). The workpiece is fixed by the mounting drive unit (after the workpiece is fixed, the loading and unloading mechanism will withdraw from the quenching chamber, and the pneumatic sliding door will close), and the workpiece is transported to the heating and temperature control unit, where it is heated to the quenching temperature. After heating, the workpiece is then transported by the mounting drive unit to the spray cooling unit, where it is spray-cooled and quenched. After quenching, the workpiece is again removed from the quenching mechanism by the loading and unloading mechanism, and another workpiece to be quenched is installed into the quenching mechanism for cyclic quenching. The quenching liquid sprayed from the spray cooling unit flows into the circulating cooling unit, is cooled by the circulating cooling unit, and is then pumped back into the spray cooling unit, realizing the recycling of the quenching liquid. The fully automatic CNC quenching equipment for pins provided in this application quenches pins automatically, eliminating the need for manual transport of workpieces during the process. This not only increases efficiency but also avoids the safety risks associated with manual workpiece transport. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention, 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the structure of the fully automatic CNC quenching equipment for pins provided in an embodiment of the present invention;

[0030] Figure 2This is a front view of the mounting drive unit and the heating and temperature control unit provided in an embodiment of the present invention;

[0031] Figure 3 A perspective view of the mounting drive unit and the heating and temperature control unit provided in an embodiment of the present invention;

[0032] Figure 4 This is a schematic diagram of the structure of the spray cooling section provided in an embodiment of the present invention.

[0033] The various icons are as follows:

[0034] 1. Loading and unloading mechanism; 2. Quenching mechanism; 3. Circulating cooling mechanism; 4. Workpiece; 11. Robot; 12. Picking frame; 13. Loading buffer platform; 14. Unloading buffer platform; 15. Unloading frame; 21. Quenching chamber; 22. Mounting drive unit; 23. Heating and temperature control unit; 24. Spray cooling unit; 221. Up and down adjustment platform; 222. First lead screw and slider mechanism; 223. Clamping platform; 224. Second lead screw and slider mechanism; 225. Upper push rod; 226. Rotating device; 227. Lower push rod; 241. Cooling cover; 242. Spray nozzle; 243. Retaining ring. Detailed Implementation

[0035] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0036] In the description of this invention, 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 invention 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 invention.

[0037] 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 invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0039] Please see Figures 1 to 4 This application provides a fully automatic CNC quenching equipment for pins, including a loading and unloading mechanism 1, a quenching mechanism 2, and a circulating cooling mechanism 3. The loading and unloading mechanism 1 is used to install the workpiece 4 to be quenched onto the quenching mechanism 2 and to remove the quenched workpiece 4 from the quenching mechanism 2. The circulating cooling mechanism 3 supplies quenching liquid to the quenching mechanism 2 and circulates and cools the quenching liquid. The quenching mechanism 2 includes a quenching chamber 21, a mounting drive unit 22, a heating and temperature control unit 23, and a spray cooling unit 24. A pneumatic sliding door is provided on one side of the quenching chamber 21. The bottom of the quenching chamber 21 is provided with a liquid collection tank. The installation drive unit 22 is located in the quenching chamber 21. The workpiece 4 to be quenched is installed on the installation drive unit 22. Under the drive of the installation drive unit 22, the workpiece 4 passes through the heating and temperature control unit 23 and the spray cooling unit 24 in sequence. The heating and temperature control unit 23 heats the workpiece 4 to the quenching temperature, and then it is cooled and quenched by the spray cooling unit 24. The quenching liquid sprayed out by the spray cooling unit 24 flows back to the circulating cooling mechanism 3 through the pipeline. After being cooled by the circulating cooling mechanism 3, it is transported back to the spray cooling unit 24.

[0040] The fully automatic CNC quenching equipment for pin shafts provided in this embodiment of the invention automatically feeds the workpiece 4 to be heat-treated into the quenching chamber 21 of the quenching mechanism 2 using a loading and unloading mechanism 1 (at this time, the pneumatic sliding door opens automatically). The workpiece 4 is fixed by the mounting drive unit 22 (after the workpiece 4 is fixed, the loading and unloading mechanism 1 will withdraw from the quenching chamber 21 and the pneumatic sliding door will close), and the workpiece 4 is transported to the heating and temperature control unit 23, where it is heated to the quenching temperature. After heating, the workpiece 4 is transported by the mounting drive unit 22 to the spray cooling unit 24, where it is spray-cooled and quenched. After quenching, the workpiece 4 is taken out of the quenching mechanism 2 by the loading and unloading mechanism 1 again, and another workpiece 4 to be quenched is installed into the quenching mechanism 2 for cyclic quenching treatment. The quenching liquid sprayed from the spray cooling section 24 flows into the circulating cooling mechanism 3. After being cooled by the circulating cooling mechanism 3, it is pumped back into the spray cooling section 24, realizing the recycling of the quenching liquid. The fully automatic CNC quenching equipment for pins provided in this application automates the quenching of pins. During the process, there is no need for manual transportation of the workpiece 4, which has high efficiency and avoids the safety risks associated with manual transportation of the workpiece 4.

[0041] In one embodiment, the mounting drive unit 22 includes a lower push rod 227, a first lead screw and slider mechanism 222, a clamping platform 223, a second lead screw and slider mechanism 224, an upper push rod 225, a rotating device 226, and an up-down adjustment platform 221. The vertical adjustment platform 221 is slidably disposed on the inner wall of the quenching chamber 21; the first screw-slider mechanism 222 is disposed between the vertical adjustment platform 221 and the inner wall of the quenching chamber 21, and the first screw-slider mechanism 222 controls the vertical position of the vertical adjustment platform 221; the clamping platform 223 is slidably disposed on the vertical adjustment platform 221; the second screw-slider mechanism 224 is disposed between the clamping platform 223 and the vertical adjustment platform 221, and the second screw-slider mechanism 224 is used to control the movement of the clamping platform 223; the upper push rod 225 is disposed on the clamping platform 223; the rotating device 226 is disposed at the bottom of the vertical adjustment platform 221; the lower push rod 227 is connected to the rotating part of the rotating device 226, and the lower push rod 227 cooperates with the upper push rod 225 to clamp the workpiece 4. The second lead screw and slider mechanism 224 is used to clamp the position of the platform 223 and adjust the height of the upper push rod 225. The upper push rod 225 and the lower push rod 227 then hold the two ends of the workpiece 4 in place, thus fixing the workpiece 4. Then, the first lead screw and slider mechanism 222 controls the height of the platform 221 to move the workpiece 4 up and down, so that the workpiece 4 can enter the heating and temperature control section 23 and the spray cooling section 24.

[0042] In one embodiment, the heating and temperature control unit 23 includes an electromagnetic heating coil and a temperature sensor. The electromagnetic heating coil is fixed to the inner wall of the quenching chamber 21. During heating, the workpiece 4 is located inside the coil of the electromagnetic heating coil. The temperature sensor is located below the electromagnetic heating coil and is electrically connected to the mounting drive unit 22. The temperature sensor detects the temperature of the workpiece 4 and controls the mounting drive unit 22 to work according to the temperature value.

[0043] In one embodiment, the spray cooling section 24 includes a cooling shroud 241, a plurality of baffle rings 243, a plurality of spray nozzles 242, and the cooling shroud 241. The cooling shroud 241 is barrel-shaped, and the workpiece 4 to be cooled and quenched is located inside the cooling shroud 241. The spray nozzles 242 are evenly distributed inside the cooling shroud 241, and spray quenching liquid towards the center of the cooling shroud 241. The spray nozzles 242 are equipped with solenoid valves. The baffle rings 243 are disposed inside the cooling shroud 241, and a through hole is provided at the center of the baffle ring 243. The through hole is the same size as the diameter of the workpiece 4; the baffle rings 243 divide the cooling shroud 241 into multiple spraying zones.

[0044] When workpiece 4 enters the cooling shroud 241, the spray nozzle 242 sprays quenching liquid (such as water or oil) onto workpiece 4, causing it to cool and quench. Furthermore, because workpiece 4 is driven by the rotating device 226, it rotates, allowing for more uniform contact with the quenching liquid, resulting in even cooling and preventing uneven cooling rates in localized areas, thus ensuring effective quenching.

[0045] Furthermore, because the quenching liquid sprayed from the top spray nozzle 242 absorbs heat from the workpiece 4 upon contact with it, its temperature rises and flows downwards along the surface of the workpiece 4. This can easily hinder the contact between the lower-temperature quenching liquid sprayed from the lower nozzle and the bottom surface of the workpiece 4 (the quenching liquid on the bottom surface of the workpiece 4 is the quenching liquid that has absorbed heat and flowed down from the upper surface of the workpiece 4, therefore its temperature is higher, resulting in a lower rate at which the bottom section of the workpiece 4 transfers heat to the higher-temperature quenching liquid). Consequently, the upper section of the workpiece 4 cools down faster, while the bottom section cools down more slowly, easily leading to inconsistent quenching effects between the upper and lower sections of the workpiece 4, affecting the performance of the workpiece 4. Therefore, this embodiment provides a baffle ring 243 inside the spray cooling section 24, such as... Figure 4 As shown, the baffle ring 243 divides the cooling cover 241 into multiple spray zones, allowing the quenching liquid on the upper surface of the workpiece 4 to diffuse and flow away along the perimeter of the baffle ring 243 after cooling the workpiece 4, instead of continuing to flow downwards along the surface of the workpiece 4 and hindering the subsequent cooling of the workpiece 4 by the quenching liquid. This makes the cooling rate between the upper and lower sections of the workpiece 4 approximately the same, ensuring that the quenching effect of the upper and lower sections of the workpiece 4 is consistent.

[0046] In one embodiment, the retaining ring 243 is an upwardly convex cone shape, and a drain hole is provided at the connection position between the cooling cover 241 and the retaining ring 243. By setting the retaining ring 243 to an upwardly convex cone shape, the quenching liquid guided by the retaining ring 243 can automatically flow towards the edge of the cooling cover 241 and then be discharged through the drain hole, preventing the quenching liquid from accumulating inside the cooling cover 241.

[0047] In one embodiment, the quenching chamber 21 is provided with two sets of mounting drive units 22, heating and temperature control units 23, and spray cooling units 24. By providing two sets of mounting drive units 22, heating and temperature control units 23, and spray cooling units 24, one quenching mechanism 2 can simultaneously quench two workpieces 4, greatly improving the efficiency of the quenching process.

[0048] In one embodiment, the loading and unloading mechanism 1 includes a robot 11, a picking frame 12, a loading buffer platform 13, an unloading buffer platform 14, and an unloading frame 15. The robot 11 is equipped with a picking claw. The picking frame 12 contains the workpiece 4 to be quenched. The unloading frame 15 is used to store the workpiece 4 after quenching. After the robot 11 takes the workpiece 4 out of the picking frame 12, it is placed on the loading buffer platform 13 for position correction. After the correction is completed, the workpiece 4 is then clamped by the robot 11 and installed on the mounting drive unit 22. After the quenching is completed, the workpiece 4 is clamped by the robot 11 and placed on the unloading buffer platform 14. After the workpiece 4 is marked on the unloading buffer platform 14, it is then clamped by the robot 11 and placed into the unloading frame 15.

[0049] The AGV places the picking frame 12 into position—the robot 11 picks up the picking frame and places it horizontally on the buffer calibration platform (grabbing one part at a time, placing four parts, with the center distance between two parts being the same as the machine tool)—the machine tool door opens—the loading robot grabs two parts at a time, flips them to the vertical position, and positions them in the machine tool quenching position—the upper center pneumatically clamps the parts—the robot retracts—the pneumatic door closes—the parts move into position, and the parts are rotated and scanned for induction quenching (while the parts are being induction quenched, the loading robot completes the loading at another station)—the pneumatic door opens—the unloading robot moves into position and grabs the parts—the upper center releases—the robot exits the rotation position—the loading robot positions and places the parts—the machine tool center automatically clamps them—the robot retracts—the pneumatic door closes—the induction quenching program loops—the unloading robot places the parts on the unloading buffer worktable—the robot places the parts into the unloading frame 15 in two steps—the work program loops.

[0050] Robot 11 employs five grippers, one of which is a single, V-shaped gripper for picking up and placing materials from the material box. The other four grippers use a double-set, double-jaw structure: one set is used for loading quenching parts, gripping two parts at a time; the other set is used for unloading quenching parts, clamping two parts at a time. Utilizing Robot 11's six-axis motion capability, the robotic arm can freely rotate, fulfilling both parts gripping and loading / unloading functions.

[0051] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A fully automatic CNC quenching equipment for pins, characterized in that, The fully automatic CNC quenching equipment for the pin shaft includes: The system includes a loading and unloading mechanism, a quenching mechanism, and a circulating cooling mechanism. The loading and unloading mechanism is used to install the workpiece to be quenched onto the quenching mechanism and to remove the quenched workpiece from the quenching mechanism. The circulating cooling mechanism supplies quenching fluid to the quenching mechanism and circulates and cools the quenching fluid. The quenching mechanism includes a quenching chamber, a mounting drive unit, a heating and temperature control unit, and a spray cooling unit. A pneumatic sliding door is provided on one side of the quenching chamber, and a liquid collection tank is provided at the bottom of the quenching chamber. The mounting drive unit is located inside the quenching chamber. The workpiece to be quenched is mounted on the mounting drive unit. Under the drive of the mounting drive unit, the workpiece passes through the heating and temperature control unit and the spray cooling unit in sequence. The heating and temperature control unit heats the workpiece to the quenching temperature, and then it is cooled and quenched by the spray cooling unit. The quenching liquid sprayed by the spray cooling unit flows back to the circulating cooling mechanism through a pipe, is cooled by the circulating cooling mechanism, and is then transported back to the spray cooling unit. The spray cooling section includes: A cooling shroud, which is barrel-shaped, with the workpiece to be cooled and quenched located inside the cooling shroud; A plurality of spray nozzles are evenly distributed inside the cooling shroud. The spray nozzles spray quenching liquid toward the center of the cooling shroud. The spray nozzles are equipped with electromagnetic valves. Several baffle rings are disposed inside the cooling cover, and a through hole is provided at the center of each baffle ring. The through hole has the same diameter as the workpiece. The baffle rings divide the cooling cover into multiple spray zones. The retaining ring is a cone shape with an upward convex shape, and a drain hole is provided at the connection position between the cooling cover and the retaining ring.

2. The fully automatic CNC quenching equipment for pins according to claim 1, characterized in that, The mounting drive unit includes: An adjustable platform is slidably disposed on the inner wall of the quenching chamber; A first lead screw and slider mechanism is disposed between the upper and lower adjustment platform and the inner wall of the quenching chamber, and the first lead screw and slider mechanism controls the upper and lower positions of the upper and lower adjustment platform. A clamping platform, which is slidably mounted on the upper and lower adjustment platform; The second lead screw and slider mechanism is disposed between the clamping platform and the up-down adjustment platform, and the second lead screw and slider mechanism is used to control the movement of the clamping platform. An upper push rod is disposed on the clamping platform; A rotating device is disposed at the bottom of the vertical adjustment platform; The lower push rod is connected to the rotating part of the rotating device, and the lower push rod cooperates with the upper push rod to clamp the workpiece.

3. The fully automatic CNC quenching equipment for pins according to claim 1, characterized in that, The heating and temperature control unit includes: An electromagnetic heating coil is fixed to the inner wall of the quenching chamber. During heating, the workpiece is located inside the coil. A temperature sensor is disposed below the electromagnetic heating coil and is electrically connected to the mounting drive unit. The temperature sensor detects the temperature of the workpiece and controls the operation of the mounting drive unit based on the temperature value.

4. The fully automatic CNC quenching equipment for pins according to claim 1, characterized in that: The quenching chamber is equipped with two sets of the installation drive unit, the heating and temperature control unit, and the spray cooling unit.

5. The fully automatic CNC quenching equipment for pins according to claim 1, characterized in that: The loading and unloading mechanism includes a robot, a picking frame, a loading buffer platform, an unloading buffer platform, and an unloading frame. The robot is equipped with picking claws. The picking frame contains workpieces to be quenched. The unloading frame is used to hold quenched workpieces. After the robot takes a workpiece out of the picking frame, it places it on the loading buffer platform for position correction. After correction, the workpiece is then gripped by the robot and installed onto the mounting drive unit. After quenching, the workpiece is clamped by the robot and placed on the unloading buffer platform. After the workpiece is marked on the unloading buffer platform, it is gripped by the robot and placed into the unloading frame.

6. The fully automatic CNC quenching equipment for pins according to claim 5, characterized in that: The material handling claw has a V-shaped electromagnet structure.

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