Automatic machining equipment based on hydraulic pump body machining

Abstract

The application discloses automatic machining equipment based on hydraulic pump body machining, and belongs to the technical field of turning equipment, which comprises a rack, a lathe holder arranged on the rack, a lathe rod provided on the lathe holder, a blade fixed to the front end of the lathe rod, a supporting plate fixed to one end of the lathe holder and adhered to the side of the lathe rod away from the blade, an ultrasonic range finder arranged on the lathe rod and facing the front side of the blade machining direction, an inner cooling flow channel arranged in the lathe rod, a piston cavity arranged on one side of the inner cooling flow channel in the lathe rod, a piston slidably arranged in the piston cavity, a pin shaft fixed to the piston, a waist-shaped through hole corresponding to the pin shaft arranged on the supporting plate, a sliding groove arranged on the inner wall of the waist-shaped through hole, and a circular ring slidably arranged in the sliding groove. The automatic reinforcement when the tool engagement amount is increased is realized, the lathe rod is prevented from continuing to bend, the assembly jam caused by the small inner hole size is avoided, secondary machining is not needed, and the machining efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of turning equipment technology, and more specifically, to automated machining equipment for machining hydraulic pump bodies. Background Technology

[0002] In the hydraulic pump body machining process, the inner hole of the pump body usually needs to be turned to ensure the dimensional accuracy and cylindricity of the inner hole, so as to meet the subsequent assembly requirements.

[0003] When existing turning equipment performs turning on the hydraulic pump body, it is necessary to clamp the hydraulic pump body with a chuck and drive it to rotate, and then use the cutting tool at the front end of the cutting tool holder that extends into the inner hole of the pump body to perform turning. Furthermore, since the cutting tool holder is a cantilever structure, when the turning equipment uses the cutting tool at the front end of the cutting tool holder to turn the hydraulic pump body, the cutting force on the cutting tool holder can easily cause a certain deformation of the cutting tool holder and result in tool deflection.

[0004] Currently, when the aforementioned existing turning equipment is used to turn the inner hole of the hydraulic pump body, due to the local compression of the sand core by the molten metal during the casting process, there are inward protrusions in the inner hole of the hydraulic pump body. When the cutting tool reaches the protrusion, the tool holder deflection suddenly increases, resulting in less material actually removed at that location. This can easily lead to the inner hole size of the pump body being too small, causing jamming during assembly and requiring secondary processing. Consequently, the overall production efficiency of the automated machining equipment is low.

[0005] In view of this, we propose an automated processing equipment for machining hydraulic pump bodies. Summary of the Invention

[0006] Technical problem to be solved: The purpose of this invention is to provide an automated processing equipment for machining hydraulic pump bodies, which solves the technical problem mentioned in the background art above.

[0007] Technical Solution: The technical solution of this invention provides an automated processing equipment for machining hydraulic pump bodies, including: A frame, on which a chuck is mounted; A tool holder is mounted on a machine frame and a tool bar is mounted thereon. A cutting blade is fixed at the front end of the tool bar. A support plate is fixed at one end to the tool holder and fits against the side of the tool bar facing away from the cutting edge. Strain gauges are provided on the support plate. An ultrasonic rangefinder is mounted on the tool holder, facing the front side in the direction of the cutting tool. The cutting tool holder has an internal cooling channel, and a piston chamber is provided on one side of the internal cooling channel. A piston is slidably provided in the piston chamber, a pin is fixed on the piston, and a first spring is provided between the piston and the piston chamber. The support plate is provided with an oblong through hole corresponding to the pin. The inner wall of the oblong through hole is provided with a sliding groove. A ring is slidably arranged in the sliding groove. A second spring is provided at both ends of the support plate in the sliding direction of the ring to abut against the ring. When the ultrasonic rangefinder measures a distance lower than a set threshold, it controls the increase of coolant pressure in the internal cooling channel to drive the piston to slide, causing the pin to extend and insert into the inner hole of the ring.

[0008] As an optional solution of the technical solution of the present invention, a movable seat is slidably provided on the frame, the movable seat slides along the chuck axis, and the cutting tool post is slidably disposed on the top of the movable seat.

[0009] As an optional solution of the technical solution of the present invention, the end of the waist-shaped through hole near the tool holder is a limiting end that abuts against the pin.

[0010] As an optional solution of the present invention, the support plate is provided with mounting grooves at both ends in the sliding direction of the ring, and the two second springs are respectively disposed in the two mounting grooves.

[0011] As an optional solution to the technical solution of the present invention, the end of the pin is hemispherical.

[0012] As an optional solution of the present invention, the two ends of the groove along the sliding direction of the ring are arc surfaces that cooperate with the outer wall of the ring.

[0013] As an optional solution of the present invention, the strain gauge is fixed to the side of the support plate facing away from the cutting tool holder and close to the end of the support plate connected to the cutting tool holder.

[0014] As an optional solution of the present invention, the cutting tool holder is provided with a nozzle that communicates with the internal cooling channel, and the nozzle faces the tip of the cutting tool.

[0015] As an optional solution of the technical solution of the present invention, one end of the first spring abuts against the piston, and the other end abuts against the inner wall of the piston cavity away from the inner cooling channel.

[0016] As an optional solution of the present invention, the tool holder is provided with a plurality of fastening bolts for pressing and fixing the tool bar onto the tool holder.

[0017] Beneficial effects: One or more technical solutions provided in this invention have at least the following technical effects or advantages: 1. This invention provides a support plate that fits snugly against the tool holder on the tool post, thus reinforcing the tool holder. When an ultrasonic rangefinder detects that the distance between the support plate and the wall of the hole to be machined in front of the tool is lower than a set threshold, the coolant pressure in the internal cooling channel is increased to drive the piston to slide, causing the pin to extend and insert into the inner hole of the annulus. After the pin is inserted, the increase in the tool depth causes the pin to abut against the end of the oblong through hole near the tool post. The shear resistance of the pin prevents the misalignment between the tool holder and the support plate from increasing further, thereby preventing the tool holder from bending further. By limiting the deflection amount within the tolerance range, the tool holder is automatically reinforced when the radial cutting force suddenly increases at the protrusion during turning. This helps to effectively avoid the situation where the actual material removed at that location is reduced due to a sudden increase in the deflection amount during the turning of the inner hole of the hydraulic pump body. This also avoids assembly jamming caused by the pump body's inner hole size being too small during subsequent assembly, eliminating the need for secondary processing and thus improving the overall production efficiency of automated machining equipment.

[0018] 2. When the pin is inserted into the inner hole of the ring, the ring floats in the oblong through hole along the sliding direction of the ring through two second springs to accommodate the misalignment caused by the tool holder and the support plate during normal machining. The hemispherical end forms a guiding fit with the inner wall of the ring, further reducing the resistance when the pin is inserted. This ensures that the pin can be inserted smoothly even when both the tool holder and the support plate are in a bent state, avoiding the pin hitting the plane of the support plate and being unable to enter the inner hole of the ring due to misalignment. This ensures that the reinforcement action of the tool holder is executed reliably and in a timely manner.

[0019] 3. The two ends of the groove along the sliding direction of the ring are arc surfaces that mate with the outer wall of the ring. When the pin bearing is subjected to shear force, the pin shaft abuts against the inner wall of the end of the waist-shaped through hole. At the same time, the outer wall of the ring fits against the arc surface of the end of the groove, increasing the contact area between the ring and the groove. The inner wall of the ring and the inner wall of the waist-shaped through hole together support the pin shaft. Moreover, the side wall of the ring is restricted by the groove and cannot deflect, which hinders the pin shaft from bending. This improves the pin bearing's ability to withstand shear force and further enhances the reinforcement effect on the cutting tool holder.

[0020] 4. Strain gauges can monitor the bending strain of the support plate. During normal processing, they can correct the deviation of the ultrasonic rangefinder measurement data caused by tool deflection based on the degree of bending of the support plate. At the same time, after reinforcement, they can be used to determine whether the tool deflection amount is within the threshold. If the tool deflection amount still exceeds the threshold, it indicates that the reinforcement is insufficient. A reminder can be issued and the part can be marked to avoid unqualified parts from flowing into subsequent assembly processes.

[0021] 5. As the coolant pressure increases and drives the piston to slide, the coolant flow rate increases and is sprayed out through the nozzle to the turning area. The coolant pressure serves as both the driving force for the reinforcement action and an enhanced source of cooling for the turning area. This simplifies the equipment structure, reduces equipment costs, and simultaneously addresses the increased turning heat caused by the increased turning amount, preventing the cutting tool from wearing out due to excessive turning heat. This ensures stable processing after reinforcement, avoids secondary processing, and ultimately improves the overall production efficiency of automated processing equipment. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural schematic diagram of an automated processing equipment for machining hydraulic pump bodies, as disclosed in a preferred embodiment of the present invention.

[0023] Figure 2 This is a cross-sectional structural schematic diagram of an automated processing equipment for machining hydraulic pump bodies, as disclosed in a preferred embodiment of the present invention.

[0024] Figure 3 This is a schematic diagram of the first three-dimensional structure of the cutting tool holder in an automated machining equipment for machining a hydraulic pump body, as disclosed in a preferred embodiment of the present invention.

[0025] Figure 4 This is a schematic diagram of the second three-dimensional structure of the turning tool holder in an automated machining equipment for machining a hydraulic pump body, as disclosed in a preferred embodiment of the present invention.

[0026] Figure 5 This is a schematic diagram of the first cross-sectional structure of the cutting tool holder in an automated machining equipment for machining a hydraulic pump body, as disclosed in a preferred embodiment of the present invention.

[0027] Figure 6 This is a schematic diagram of the second cross-sectional structure of the turning tool holder in an automated machining equipment for machining a hydraulic pump body, as disclosed in a preferred embodiment of the present invention.

[0028] Figure 7 An automated machining equipment for machining hydraulic pump bodies is disclosed in a preferred embodiment of the present invention. Figure 6 A magnified schematic diagram of a portion of the structure in section A.

[0029] Figure 8 This is a schematic diagram of the three-dimensional structure of the tool holder in an automated machining equipment for machining a hydraulic pump body, as disclosed in a preferred embodiment of the present invention.

[0030] Figure 9 This is a cross-sectional view of the support plate in an automated processing equipment for machining a hydraulic pump body, as disclosed in a preferred embodiment of the present invention.

[0031] Figure 10An automated machining equipment for machining hydraulic pump bodies is disclosed in a preferred embodiment of the present invention. Figure 9 A magnified schematic diagram of a local structure in section B.

[0032] Explanation of the labels in the diagram: 1. Frame; 2. Chuck; 3. Moving base; 4. Tool post; 41. Tool bar; 411. Blade; 412. Nozzle; 413. Ultrasonic rangefinder; 414. Internal cooling channel; 415. Piston; 416. Pin; 417. Piston chamber; 418. First spring; 42. Support plate; 421. Strain gauge; 422. Waist-shaped through hole; 423. Ring; 424. Slide groove; 425. Second spring; 426. Mounting groove; 43. Fastening bolt. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "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.

[0035] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] Example 1, referring to Figures 1-10 As a first embodiment of the present invention, an automated processing equipment for machining hydraulic pump bodies is provided, the automated processing equipment for machining hydraulic pump bodies includes: A frame 1 is provided with a chuck 2, which is used to hold the hydraulic pump body and drive it to rotate. A tool holder 4 is mounted on the machine frame 1, and a tool bar 41 is mounted on it. A cutting blade 411 is fixed at the front end of the tool bar 41. The support plate 42 is fixed at one end to the tool holder 4 and fits against the side of the tool bar 41 facing away from the blade 411. The support plate 42 is provided with strain gauges 421. An ultrasonic rangefinder 413 is mounted on the tool holder 41, facing the front side of the cutting direction of the cutting tool 411; The tool holder 41 has an internal cooling channel 414, and a piston chamber 417 is located on one side of the internal cooling channel 414. A piston 415 is slidably arranged in the piston chamber 417. A pin 416 is fixed on the piston 415. A first spring 418 is provided between the piston 415 and the piston chamber 417. The support plate 42 is provided with an oblong through hole 422 corresponding to the pin 416. The inner wall of the oblong through hole 422 is provided with a groove 424. A ring 423 is slidably provided in the groove 424. A second spring 425 is provided at both ends of the ring 423 in the sliding direction of the support plate 42 to abut against the ring 423. When the ultrasonic rangefinder 413 measures a distance lower than a set threshold, it controls the increase of coolant pressure in the internal cooling channel 414 to drive the piston 415 to slide, causing the pin 416 to extend and insert into the inner hole of the ring 423.

[0037] A movable seat 3 is slidably mounted on the frame 1. The movable seat 3 slides along the axial direction of the chuck 2, and the tool post 4 is slidably mounted on the top of the movable seat 3.

[0038] The end of the waist-shaped through hole 422 near the tool holder 4 is the limiting end that abuts against the pin 416.

[0039] The support plate 42 has mounting grooves 426 at both ends of the ring 423 in the sliding direction, and two second springs 425 are respectively set in the two mounting grooves 426.

[0040] The end of the pin 416 is hemispherical.

[0041] The two ends of the groove 424 along the sliding direction of the ring 423 are arc surfaces that mate with the outer wall of the ring 423.

[0042] The strain gauge 421 is fixed to the side of the support plate 42 facing away from the cutting tool holder 41, and close to the end of the support plate 42 that is connected to the cutting tool holder 4.

[0043] The cutting tool holder 41 is provided with a nozzle 412 that communicates with the internal cooling channel 414, and the nozzle 412 faces the tip of the cutting tool 411.

[0044] One end of the first spring 418 abuts against the piston 415, and the other end abuts against the inner wall of the piston cavity 417 away from the internal cooling channel 414. The first spring 418 is sleeved on the outside of the pin 416. When the coolant pressure in the internal cooling channel 414 is normal, the elastic force of the first spring 418 keeps the piston 415 on the side of the piston cavity 417 close to the internal cooling channel 414, and the pin 416 retracts into the piston cavity 417. The free end of the pin 416 does not extend beyond the surface of the cutting tool holder 41 facing away from the cutting tool 411.

[0045] The tool holder 4 is provided with multiple fastening bolts 43, which are used to press and fix the tool bar 41 to the tool holder 4.

[0046] The piston chamber 417 is located inside the cutting tool holder 41 and on one side of the internal cooling channel 414. The piston chamber 417 and the internal cooling channel 414 are connected by a connecting hole, so that the coolant in the internal cooling channel 414 can enter the piston chamber 417 to push the piston 415 to slide.

[0047] One end of the support plate 42 is fixed to the tool holder 4 by bolts or welding. The support plate 42 is attached to the side of the tool holder 41 facing away from the cutting tool 411. The support plate 42 and the tool holder 41 are only attached to each other in the non-reinforced state. The length direction of the support plate 42 extends along the axis of the tool holder 41.

[0048] An oblong through hole 422 is formed on the support plate 42 near one end of the tool holder 4. The long axis of the oblong through hole 422 is along the axis of the tool holder 41. A groove 424 is set in the middle of the inner wall of the oblong through hole 422. The depth direction of the groove 424 is perpendicular to the inner wall surface of the oblong through hole 422. The groove 424 extends along the length direction of the oblong through hole 422. Both ends of the groove 424 are arc surfaces that cooperate with the outer wall of the ring 423. The width of the ring 423 is adapted to the width of the groove 424. The ring 423 can slide in the groove 424 along the length direction of the oblong through hole 422.

[0049] Two mounting slots 426 are respectively disposed in the support plate 42 and located at both ends of the slide groove 424. The mounting slots 426 are connected to the slide groove 424. The second spring 425 is disposed in the mounting slot 426. One end of the second spring 425 abuts against the inner wall of the mounting slot 426 away from the slide groove 424, and the other end abuts against the outer wall of the ring 423, so that the ring 423 is held in the middle position of the waist-shaped through hole 422 when no external force is applied.

[0050] During use, the operator clamps the hydraulic pump body onto the chuck 2. The chuck 2 holds the pump body and drives it to rotate. The chuck 2 is preferably a four-jaw chuck, which can stably clamp hydraulic pump bodies of different shapes and ensure that the position of the axis is consistent with the turning axis. The moving seat 3 slides along the axial direction of the chuck 2, driving the tool holder 4 and the tool bar 41 to feed towards the inner hole of the pump body. The tool holder 4 can slide relative to the top of the moving seat 3 to adjust the radial turning position of the cutting tool 411 in the inner hole of the pump body. The end of the cutting tool bar 41 is pressed and fixed to the tool holder 4 by multiple fastening bolts 43. The cutting tool 411 extends into the inner hole of the pump body for turning.

[0051] The sliding of the movable seat 3 along the axial direction of the chuck 2 and the sliding of the tool post 4 relative to the top of the movable seat 3 can both be achieved through a lead screw drive structure. The main controller controls the servo motor to drive the lead screw to rotate, thereby driving the movable seat 3 and the tool post 4 to move along a set path. Its specific structure is a common design of existing CNC lathes and will not be described in detail.

[0052] The tool holder 41 is a cantilever structure. During turning, the cutting force on the insert 411 causes the tool holder 41 to deform and cause tool deflection. One end of the support plate 42 is fixed to the tool holder 4 and fits against the side of the tool holder 41 facing away from the insert 411, providing basic reinforcement for the tool holder 41. Strain gauges 421 are provided on the support plate 42, fixed to the side of the support plate 42 facing away from the tool holder 41 and close to the end of the support plate 42 connected to the tool holder 4. When the cutting tool 41 bends under the cutting force, the support plate 42 bends along with the cutting tool 41. The strain gauge 421 is attached to the surface of the support plate 42. When the support plate 42 bends, its surface undergoes tensile or compressive deformation, and the resistance value of the strain gauge 421 changes accordingly. The resistance change is converted into a voltage signal output by the measuring circuit. This voltage signal is proportional to the bending strain of the support plate 42, so that the bending strain generated by the support plate 42 as the cutting tool 41 bends can be monitored in real time.

[0053] An ultrasonic rangefinder 413 is mounted on the cutting tool holder 41, facing the front side of the cutting tool 411 in the machining direction. It obliquely illuminates the hole wall to be machined in front of the cutting tool 411, detecting the remaining material distribution of the hole wall before the cutting tool 411 arrives. The measuring point of the ultrasonic rangefinder 413 is located on the same side in front of the cutting tool 411, allowing sufficient time for a reinforcement action to be triggered. The working principle of the ultrasonic rangefinder 413 is based on existing technology; it emits ultrasonic pulses and receives the echoes reflected from the hole wall, calculating the ultrasonic rangefinder 413 based on the time difference between emission and reception. The distance between the cutting tool 411 and the hole wall is used to calculate the actual inner diameter by adjusting the tilt angle, thereby determining the actual machining allowance. The cutting tool 411 feeds along the axial direction of the pump body hole with the cutting tool holder 41. The ultrasonic rangefinder 413 can obtain the allowance information of the hole wall in front before the cutting tool 411 arrives. When the allowance is normal, the distance value output by the ultrasonic rangefinder 413 is within the normal range. When there is a protrusion in front of the cutting tool 411, the hole wall at the protrusion protrudes inward, and the distance between the ultrasonic rangefinder 413 and the hole wall at that point decreases, and the distance value is lower than the normal range.

[0054] During normal machining, the ultrasonic rangefinder 413 monitors the allowance of the hole wall in front of the cutting tool 411, and the strain gauge 421 monitors the normal bending strain of the support plate 42. These measurements are used to correct the reading of the ultrasonic rangefinder 413. Because the cutting tool holder 41 deflects under the turning force, there is a deviation between the actual turning position and the theoretical position of the cutting tool 411. The ultrasonic rangefinder 413 measures the distance between the hole wall in front of the cutting tool 411 and the ultrasonic rangefinder 413 itself. Since the ultrasonic rangefinder 413 deflects along with the cutting tool holder 41, the reading of the ultrasonic rangefinder 413 includes the deviation caused by the deflection. The strain gauge 421... The bending strain of the support plate 42 is monitored, which corresponds to the tool deflection amount. The main controller calculates the current tool deflection amount based on the output signal of the strain gauge 421 and corrects the reading of the ultrasonic rangefinder 413 to obtain the true allowance of the hole wall in front of the cutting tool 411. The cutting tool holder 41 is attached to the support plate 42 to provide basic rigidity. The tool deflection amount is within the tolerance. At this time, the piston 415 in the piston chamber 417 is in the initial position under the action of the first spring 418. The pin 416 retracts and does not insert into the waist-shaped through hole 422 on the support plate 42, so as to avoid repeated wear between the pin 416 and the ring 423 due to machining vibration.

[0055] When the ultrasonic rangefinder 413 detects that the machining allowance of the hole wall in front of the blade 411 exceeds the set value, that is, when the measured distance is lower than the set threshold, it sends a trigger signal. The main controller controls the coolant pump to increase the pressure, so that the coolant pressure in the internal cooling channel 414 increases. Under the action of pressure, the coolant in the internal cooling channel 414 enters the piston chamber 417, pushing the piston 415 to slide in the piston chamber 417. The piston 415 overcomes the elastic force of the first spring 418 and drives the pin 416 to extend. The pin 416 extends and inserts into the waist-shaped through hole 422 on the support plate 42, and at the same time inserts into the inner hole of the ring 423.

[0056] When the pin 416 is inserted, due to the tool deflection during normal machining, both the tool holder 41 and the support plate 42 are in a slightly bent state. Because their bending radii are different, the tool holder 41 is located on the outer side of the bend, and the support plate 42 is located on the inner side, causing axial misalignment between the pin 416 and the oblong through hole 422. If directly and rigidly inserted, this misalignment may cause the pin 416 to abut against the plane of the support plate 42, preventing it from entering the inner hole of the ring 423. Therefore, a ring 423 is installed inside the oblong through hole 422. The ring 423 is held in the middle position of the oblong through hole 422 by a second spring 425. The support plate 42 has mounting grooves 426 at both ends in the sliding direction of the ring 423, and two second springs 425 are respectively installed in the two mounting grooves 426, with one end of each second spring abutting against the mounting groove. At one end of the groove 426, the other end abuts against the side wall of the ring 423, so that the ring 423 is held in the middle position of the waist-shaped through hole 422 when no external force is applied, and can float slightly along the axial direction of the cutting tool holder 41. When the pin 416 is inserted, the ring 423 floats in the waist-shaped through hole 422 along the sliding direction of the ring 423 to adapt to the misalignment between the cutting tool holder 41 and the support plate 42 caused by the tool deflection during normal machining. The end of the pin 416 is hemispherical, and the hemispherical end forms a guiding fit with the inner wall of the ring 423, further reducing the resistance when the pin 416 is inserted and ensuring that the pin 416 is inserted smoothly. The inner hole of the ring 423 and the pin 416 adopt a cylindrical small clearance fit to ensure that the pin 416 can pass smoothly through the inner hole of the ring 423, while avoiding excessive clearance that would cause the pin 416 to wobble when subjected to shearing force.

[0057] After the pin 416 is inserted, the increase in tool depth causes the tool holder 41 and support plate 42 to bend further. This causes the pin 416 to abut against the end of the oblong through hole 422 near the tool holder 4. The end of the oblong through hole 422 near the tool holder 4 serves as a limiting end for the pin 416. After abutting against this limiting end, the pin 416 bears axial shear force. The pin 416 contacts the inner wall of the ring 423, and the outer wall of the ring 423 abuts against the end of the groove 424. The force is transmitted to the support plate 42 through the ring 423. Simultaneously, the pin 416 abuts against the inner wall of the oblong through hole 422, and the inner wall of the oblong through hole 422 also directly bears the force transmitted by the pin 416. The two ends of the groove 424 along the sliding direction of the ring 423 mate with the outer wall of the ring 423. When the pin 416 is subjected to shear force, the pin 416 abuts against the inner wall of the end of the waist-shaped through hole 422, while the outer wall of the ring 423 fits against the arc surface of the end of the groove 424, increasing the contact area between the ring 423 and the groove 424. The inner wall of the ring 423 and the inner wall of the waist-shaped through hole 422 together support the pin 416, and the side wall of the ring 423 is restricted by the groove 424 and cannot deflect, thus preventing the pin 416 from bending and improving the ability of the pin 416 to withstand shear force. The shear resistance of the pin 416 prevents the misalignment between the cutting tool holder 41 and the support plate 42 from increasing, thereby preventing the cutting tool holder 41 from bending further and limiting the tool allowance within the tolerance range, further enhancing the reinforcement effect on the cutting tool holder 41.

[0058] Therefore, during the turning process, when the cutting tool 411 turns to the protrusion and causes a sudden increase in radial turning force, the tool holder 41 is automatically reinforced. This helps to effectively avoid the situation where the actual material removed at that position is reduced due to a sudden increase in the tool depth during the turning of the inner hole of the hydraulic pump body. This also avoids the situation where the assembly of the hydraulic pump body is stuck due to the small inner hole size of the pump body, eliminating the need for secondary processing and thus improving the overall production efficiency of the automated processing equipment.

[0059] At the same time, the increase in coolant pressure increases the coolant flow rate, which is then sprayed out from the nozzle 412 through the internal cooling channel 414. The nozzle 412 is directed towards the turning part of the cutting tool 411. In response to the increased turning heat caused by the increased turning amount, the coolant pressure serves as both the driving force for the reinforcement action and the enhanced source of cooling for the turning part. There is no need to set up an additional independent driving source, which simplifies the equipment structure and reduces the equipment cost. At the same time, it ensures that reinforcement and cooling are carried out simultaneously, preventing the cutting tool 411 from wearing out due to excessive turning heat and ensuring the stable progress of the machining after reinforcement.

[0060] After reinforcement, strain gauge 421 continuously monitors the bending strain of support plate 42, corresponding to the tool deflection amount after reinforcement. If the tool deflection amount is within the threshold, processing continues; if it exceeds the threshold, it indicates insufficient reinforcement. The main controller issues a reminder and marks the part for rejection, thereby preventing unqualified parts from flowing into subsequent assembly processes.

[0061] After passing the protrusion, the main controller controls the coolant pump pressure to drop, the coolant pressure in the internal cooling channel 414 decreases, the piston 415 resets under the action of the first spring 418, the pin 416 retracts, the support plate 42 and the cutting tool rod 41 return to a close but not locked state, and the ring 423 returns to the middle position of the waist-shaped through hole 422 under the action of the second spring 425, realizing the automatic reset of the equipment.

[0062] After this batch of processing is completed, the moving seat 3 retracts, the chuck 2 stops rotating, and the operator inspects the equipment, replacing vulnerable parts such as strain gauge 421, ring 423, or pin 416 if necessary, in preparation for the next batch of production.

[0063] It should be noted that the main controller in this embodiment is a PLC, which is used to receive signals from the ultrasonic rangefinder 413 and the strain gauge 421 and control the pressure of the coolant pump, and will not be described in detail. The coolant pump is a hydraulic pump, which is used to provide pressurized coolant to the internal cooling channel 414.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An automated processing equipment for machining hydraulic pump bodies, characterized in that, include: A frame, on which a chuck is mounted; A tool holder is mounted on a machine frame and a tool bar is mounted thereon. A cutting blade is fixed at the front end of the tool bar. A support plate is fixed at one end to the tool holder and fits against the side of the tool bar facing away from the cutting edge. Strain gauges are provided on the support plate. An ultrasonic rangefinder is mounted on the tool holder, facing the front side in the direction of the cutting tool. The cutting tool holder has an internal cooling channel, and a piston chamber is provided on one side of the internal cooling channel. A piston is slidably provided in the piston chamber, a pin is fixed on the piston, and a first spring is provided between the piston and the piston chamber. The support plate is provided with an oblong through hole corresponding to the pin. The inner wall of the oblong through hole is provided with a sliding groove. A ring is slidably arranged in the sliding groove. A second spring is provided at both ends of the support plate in the sliding direction of the ring to abut against the ring. When the ultrasonic rangefinder measures a distance lower than a set threshold, it controls the increase of coolant pressure in the internal cooling channel to drive the piston to slide, causing the pin to extend and insert into the inner hole of the ring.

2. The automated processing equipment for machining hydraulic pump bodies according to claim 1, characterized in that: A movable seat is slidably mounted on the frame, and the movable seat slides along the chuck axis. The tool post is slidably mounted on the top of the movable seat.

3. The automated processing equipment for machining hydraulic pump bodies according to claim 1, characterized in that: The end of the waist-shaped through hole near the tool holder is a limiting end that abuts against the pin.

4. The automated processing equipment for machining hydraulic pump bodies according to claim 1, characterized in that: The support plate has mounting grooves at both ends in the sliding direction of the ring, and the two second springs are respectively installed in the two mounting grooves.

5. The automated processing equipment for machining hydraulic pump bodies according to claim 1, characterized in that: The end of the pin is hemispherical.

6. The automated processing equipment for machining hydraulic pump bodies according to claim 1, characterized in that: The two ends of the groove along the sliding direction of the ring are arc surfaces that mate with the outer wall of the ring.

7. The automated processing equipment for machining hydraulic pump bodies according to claim 1, characterized in that: The strain gauge is fixed to the side of the support plate facing away from the cutting tool holder, and close to the end of the support plate that is connected to the cutting tool holder.

8. The automated processing equipment for machining hydraulic pump bodies according to claim 1, characterized in that: The cutting tool holder is provided with a nozzle that communicates with the internal cooling channel, and the nozzle faces the tip of the cutting tool.

9. The automated processing equipment for machining hydraulic pump bodies according to claim 1, characterized in that: One end of the first spring abuts against the piston, and the other end abuts against the inner wall of the piston cavity away from the internal cooling channel.

10. The automated processing equipment for machining hydraulic pump bodies according to claim 1, characterized in that: The tool holder is provided with multiple fastening bolts for pressing and fixing the tool bar to the tool holder.

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