A rotary motor housing machining fixture and its usage method

Abstract

This invention discloses a rotary motor housing machining fixture and its usage method, comprising a turntable, a fixed base, and a base. The fixed base is sleeved on the outer surface of the turntable and fixedly installed on the upper surface of the base. The turntable is located above the base and is rotatably connected to both the fixed base and the base. The turntable has four sets of upper and lower open receiving slots circumferentially, corresponding to the loading / unloading area, upper surface machining area, flipping area, and lower surface machining area of ​​the rotary motor housing. A baffle for opening and closing the receiving slots is provided below the turntable at the corresponding slot positions. Mounting slots are provided on both the inner and outer sides of the receiving slots on the turntable. Each set of mounting slots contains a first drive mechanism, a steel ball, a second drive mechanism, and a push rod. This invention, by setting up the turntable, the first drive mechanism, the steel ball, the second drive mechanism, and the push rod, realizes continuous automated operation of rotary motor housing loading, upper surface machining, flipping, lower surface machining, and unloading, completing double-sided machining in a single clamping.

Description

Technical Field

[0001] This invention relates to the field of rotary motor machining technology, and more specifically, to a rotary motor housing machining fixture and its usage method. Background Technology

[0002] A high-pressure plunger rotary motor is a hydraulic drive device mainly used in heavy machinery such as excavators to achieve the rotation of the equipment.

[0003] Currently, in the machining of rotary motor housings, single-station fixtures are commonly used, which can only clamp one workpiece at a time. After machining one side, the workpiece must be manually disassembled, flipped, and re-clamped before machining the other side. This method is not only inefficient but also results in large repeatability errors. Furthermore, existing fixtures often lack automatic flipping and multi-station transfer functions, making it difficult to achieve continuous and automated production.

[0004] Therefore, a new solution is needed to address the above problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rotary motor housing machining fixture and its usage method.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A rotary motor housing machining fixture includes a turntable, a fixed base, and a base. The fixed base is sleeved on the outer surface of the turntable and fixedly installed on the upper surface of the base. The turntable is located above the base and is rotatably connected to both the fixed base and the base. The turntable has four sets of upper and lower open receiving slots circumferentially, corresponding to the loading / unloading area, upper surface machining area, flipping area, and lower surface machining area of ​​the rotary motor housing. A baffle for opening and closing the receiving slots is provided below the turntable at the corresponding location of the receiving slots. The turntable has mounting slots on both the inner and outer sides of the receiving slots. Each set of mounting slots contains a first drive mechanism and a steel ball. The first drive mechanism is connected to the steel ball and drives the steel ball to partially protrude from the receiving slot. Each set of mounting slots also contains a second drive mechanism and a push rod. The second drive mechanism is connected to the push rod and drives the push rod to move toward the rotary motor housing in the receiving slot in the flipping area until the end of the push rod abuts against the rotary motor housing. The second drive mechanism drives the push rod to rotate, causing the rotary motor housing to flip.

[0008] Furthermore, the inner edge of the fixed base is connected to a support ring, which is used to support the baffle and is movably connected to the baffle. The support ring is provided with a notch in the flipping area that matches the receiving groove.

[0009] Furthermore, a first cylinder is installed on the lower surface of the turntable at the position corresponding to the baffle, and the output end of the first cylinder is connected to the baffle.

[0010] Furthermore, the first driving mechanism includes a telescopic rod, with a first mounting block and a second mounting block connected to its two ends respectively. The first mounting block is fixedly installed on the opposite side of the exposed portion of the steel ball, and the second mounting block is fixedly installed at the bottom of the mounting groove. A spring is sleeved on the outer surface of the telescopic rod, with the two ends of the spring abutting against the first mounting block and the second mounting block respectively.

[0011] Furthermore, the second drive mechanism includes a second cylinder, the output end of which is connected to a motor, the output end of which is connected to an indexing turntable, and a push rod is connected to the indexing turntable. The push rod passes through a steel ball, a first mounting block, a telescopic rod, and a second mounting block.

[0012] Furthermore, at least two sets of limiting blocks are evenly distributed circumferentially on the outer surface of the top rod end.

[0013] Furthermore, when the second drive mechanism is running in the flipping zone, it detects in real time the contact pressure between the end of the push rod and the housing of the rotary motor, as well as the displacement of the push rod extending from its initial position, and determines the effective contact state of the push rod based on the judgment mechanism.

[0014] Furthermore, the determination mechanism is as follows: a valid contact is determined when the following three conditions are met simultaneously;

[0015] Pressure conditions: Real-time contact pressure Reaching or exceeding the preset effective contact force threshold ;

[0016] Displacement condition: the actual displacement of the push rod Contact displacement with the preset theoretical value The absolute error between them is less than or equal to the allowable displacement tolerance. ;

[0017] Displacement stability condition: real-time displacement rate of the push rod The absolute value is less than or equal to the speed threshold. .

[0018] The present invention also provides a method for using a rotary motor housing machining fixture, comprising the following steps:

[0019] Step S1: At the loading and unloading area, the rotary motor housing is placed in the receiving groove, the lower surface of the rotary motor housing abuts against the contact baffle, and the two sides of the rotary motor housing are limited by the exposed parts of the steel balls embedded in them.

[0020] In step S2, the turntable rotates 90°, moving the rotary motor housing to the upper surface machining area. Then, the second drive mechanism in one of the mounting slots operates, and the second cylinder drives the push rod to move toward the rotary motor housing until the end of the push rod abuts against the rotary motor housing. Next, the pressure plate at the upper surface machining area moves downward, clamping and fixing the rotary motor housing by abutting against it. Then, the milling cutter at the upper surface machining area performs machining on the upper surface of the rotary motor housing.

[0021] Step S3: The turntable rotates 90°, moving the rotary motor housing to the tilting zone. Then, the second drive mechanisms in both sets of mounting slots operate, and the two sets of second cylinders drive their corresponding push rods toward the rotary motor housing until the ends of the push rods abut against the rotary motor housing. Next, the baffle below the receiving slot is driven by the first cylinder to open the lower opening of the receiving slot. Then, the motor drives the push rod to rotate 180° via the indexing turntable, and the rotation of the push rod drives the rotary motor housing to tilt 180°. Next, the baffle below the receiving slot is driven by the first cylinder to close the lower opening of the receiving slot.

[0022] In step S4, the turntable rotates 90°, moving the rotary motor housing to the lower surface machining area. Then, the second drive mechanism in one of the mounting slots operates, and the second cylinder drives the push rod to move toward the rotary motor housing until the end of the push rod abuts against the rotary motor housing. Next, the pressure plate in the lower surface machining area moves downward, clamping and fixing the rotary motor housing by abutting against the lower surface of the rotary motor housing. Then, the milling cutter in the lower surface machining area performs machining on the lower surface of the rotary motor housing.

[0023] Step S5: Rotate the turntable 90° to move the rotary motor housing to the loading and unloading area, and remove the finished rotary motor housing from the receiving slot.

[0024] The beneficial effects of this invention are:

[0025] 1. This invention, by setting up a turntable, a first driving mechanism, steel balls, a second driving mechanism, and a push rod, realizes continuous automated operation of rotary motor housing loading, upper surface processing, flipping, lower surface processing, and unloading. Double-sided processing can be completed in one clamping, significantly improving the processing efficiency of rotary motor housing.

[0026] 2. By installing a pressure sensor on the push rod, a displacement sensor on the second cylinder, and introducing a multi-condition judgment mechanism, this invention achieves accurate and reliable detection of the contact state between the push rod and the rotary motor housing, ensuring the stability and safety of the subsequent rotation of the rotary motor housing.

[0027] 3. This invention improves the balance and reliability of clamping by using a dual confirmation mechanism that requires both push rods to achieve effective contact, effectively preventing overturning accidents caused by poor contact on one side. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of a rotary motor housing machining fixture in this embodiment;

[0029] Figure 2 This is a cross-sectional view of the rotary motor housing machining fixture in this embodiment;

[0030] Figure 3 This is a cross-sectional structural frame diagram of the turntable located in the upper surface machining area in this embodiment;

[0031] Figure 4 This is a cross-sectional view of the turntable located in the flipping area in this embodiment;

[0032] Figure 5 This is a cross-sectional view of the first driving mechanism in this embodiment;

[0033] Figure 6 This is a schematic diagram of the main structure of the rotary motor housing in this embodiment.

[0034] Reference numerals in the attached drawings: 1. Turntable; 2. Fixed base; 3. Receiving groove; 4. Baffle; 5. Mounting groove; 6. First drive mechanism; 7. Telescopic rod; 71. First mounting block; 72. Second mounting block; 73. Spring; 74. Steel ball; 8. Second drive mechanism; 9. Second cylinder; 91. Motor; 92. Indexing turntable; 93. Motor base; 94. Top rod; 10. Limiting block; 101. Support ring; 11. Notch; 12. First cylinder; 13. Rotary motor housing; 14. First groove; 141. Second groove; 142. Limiting groove; 143. Pressure plate; 15. Detailed Implementation

[0035] 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, and 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.

[0036] Example: A jig for machining a rotary motor housing, such as Figures 1-6As shown, the device includes a turntable 1, a fixed base 2, and a base 3. The fixed base 2 has an annular structure and is fitted onto the outer surface of the turntable 1 and fixedly mounted on the upper surface of the base 3. The turntable 1 has a disc-shaped structure and is located above the base 3. It is rotatably connected to both the fixed base 2 and the base 3. That is, when the turntable 1 rotates, the lower end of the turntable 1 is rotatably connected to the base 3, and the outer sidewall of the edge of the turntable 1 is rotatably connected to the inner sidewall of the fixed base 2. The turntable 1, the fixed base 2, and the base 3 are coaxially arranged. Preferably, a drive motor can be installed on the base 3. The output end of the drive motor is connected to an indexing plate and then connected to the turntable 1 through the indexing plate to achieve intermittent rotation of the turntable 1.

[0037] Furthermore, the turntable 1 is provided with four sets of open-top and open-bottom receiving slots 4 around its circumference. The receiving slots 4 are adapted to the rotary motor housing 14 and are used to load the rotary motor housing 14. The receiving slots 4 have a square structure and correspond to the loading / unloading area, upper surface processing area, flipping area and lower surface processing area of ​​the rotary motor housing 14. That is, there is a set of receiving slots 4 for each of the loading / unloading area, upper surface processing area, flipping area and lower surface processing area.

[0038] A baffle 5 is provided below the turntable 1 at the position corresponding to the receiving groove 4 for opening and closing the receiving groove 4. By setting the baffle 5, when rotating to the loading / unloading area, the upper surface processing area and the lower surface processing area, the baffle 5 closes the lower opening of the receiving groove 4 to prevent the rotary motor housing 14 from falling from the lower opening of the receiving groove 4. At the same time, the baffle 5 also supports the rotary motor housing 14 and cooperates with the pressure plate 15 to clamp and limit the rotary motor housing 14 to facilitate the processing of the upper and lower surfaces. In the flipping area, the baffle 5 is displaced to open the lower opening of the receiving groove 4 so that the rotary motor housing 14 can be flipped to avoid interference.

[0039] Furthermore, such as Figures 2-4 As shown, the turntable 1 has mounting slots 6 on both the inner and outer sides of each set of receiving slots 4. That is, for each set of receiving slots 4, there are two sets of mounting slots 6, located on the outer side (edge ​​of the turntable 1) and the inner side (middle of the turntable 1) of the receiving slots 4, respectively. Each set of mounting slots 6 is provided with a first drive mechanism 7 and a steel ball 8. The first drive mechanism 7 is connected to the steel ball 8 and drives the steel ball 8 to be partially exposed in the receiving slot 4. When the rotary motor housing 14 is placed in the receiving slot 4, the steel balls 8 on both sides of the receiving slot 4 are embedded in the rotary motor housing 14, which initially positions and laterally limits the rotary motor housing 14 to facilitate the subsequent flow of the rotary motor to each processing area.

[0040] Each set of mounting slots 6 is also equipped with a second drive mechanism 9 and a push rod 10, with the second drive mechanism 9 connected to the push rod 10. When rotating to the upper surface machining area and the lower surface machining area, the second drive mechanism 9 in one set of mounting slots 6 operates, driving the push rod 10 to move towards the rotary motor housing 14 until the end of the push rod 10 abuts against the rotary motor housing 14. The push rod 10 abuts against and contacts the rotary motor housing 14 to limit and fix it, so as to facilitate the machining of the upper and lower surfaces of the rotary motor housing 14. When rotating to the flipping area... At this time, the second drive mechanism 9 in both sets of mounting slots 6 are running, driving the two sets of push rods 10 to move toward the rotary motor housing 14 until the ends of the two sets of push rods 10 abut against the rotary motor housing 14. The rotary motor housing 14 is clamped and fixed by the contact of the two sets of push rods 10. Then, the second drive mechanism 9 drives the push rods 10 to rotate 180°, so that the rotary motor housing 14 is flipped 180°, and the lower surface of the rotary motor housing 14 is flipped upward, which facilitates the processing of the lower surface.

[0041] Furthermore, such as Figures 2-4 As shown, the inner edge of the fixed base 2 is connected to a support ring 11. The support ring 11 has a ring structure and is integrated with the fixed base 2. It is used to support the baffle 5 and is movably connected to the baffle 5. The support ring 11 has a notch 12 in the flipping area that is adapted to the receiving groove 4. By setting the notch 12, interference with the flipping of the rotary motor housing 14 can be avoided.

[0042] Preferably, the upper surface of the support block is fitted with multiple sets of balls, which are evenly arranged. The multiple sets of balls work together to support the baffle 5. At the same time, the rolling connection between the balls and the baffle 5 reduces the friction between the support block and the baffle 5, facilitating the circumferential and radial movement of the baffle 5.

[0043] Preferably, a first cylinder 13 is installed on the lower surface of the turntable 1 at the position corresponding to the baffle 5, and the output end of the first cylinder 13 is connected to the baffle 5. The first cylinder 13 is used to drive the baffle 5 to move, so as to open and close the lower opening of the receiving groove 4.

[0044] Furthermore, such as Figure 3 and Figure 4 As shown, the first drive mechanism 7 includes a telescopic rod 71, with a first mounting block 72 and a second mounting block 73 connected to its two ends respectively. The first mounting block 72 is fixedly installed on the opposite side of the exposed part of the steel ball 8, that is, the first mounting block 72 and the steel ball 8 form an integral unit. The second mounting block 73 is fixedly installed on the bottom of the mounting groove 6. A spring 74 is sleeved on the outer surface of the telescopic rod 71, with the two ends of the spring 74 abutting against the first mounting block 72 and the second mounting block 73 respectively. The first mounting block 72 is slidably connected to the bottom of the mounting groove 6 and moves linearly.

[0045] When the rotary motor housing 14 is placed in the receiving groove 4, the exposed part of the steel ball 8, under the elastic force of the spring 74, is embedded into the first groove 141 on both sides of the rotary motor housing 14. This achieves initial positioning and lateral limiting of the rotary motor housing 14, preventing the rotary motor housing 14 from shifting or shaking during the rotation process. This provides an accurate and stable initial position for subsequent upper surface processing, flipping, and lower surface processing, ensuring that the subsequent push rod 10 can smoothly and accurately align with the second groove 142 and the limiting groove 143 on the rotary motor housing 14. It should be noted that the steel ball 8 is positioned at the center of the longitudinal height of the rotary motor housing 14 to ensure that the position of the steel ball 8 is consistent before and after the rotary motor housing 14 is flipped, that is, the contact point with the rotary motor housing 14 remains unchanged. This ensures that the reference of the rotary motor housing 14 is consistent in the height direction before and after flipping, which is beneficial for maintaining processing accuracy and reducing repeated positioning errors caused by flipping.

[0046] Among them, the steel ball 8 can be made of high carbon chromium bearing steel with a hardness of HRC 58-62; the preload provided by the spring 74 is greater than the inertial force / centrifugal force generated by the rotary motor housing 14 during the start, stop or rotation of the turntable 1, so as to prevent the rotary motor housing 14 from moving or falling out of the limit of the steel ball 8 in the receiving groove 4.

[0047] The second drive mechanism 9 includes a second cylinder 91, which is fixedly installed at the bottom of the mounting groove 6. The output end of the second cylinder 91 is connected to a motor base 94, which is used to install a motor 92 and an indexing turntable 93. The motor base 94 slides along the bottom of the mounting groove 6 to ensure the alignment of the movement trajectory of the push rod 10 with the rotary motor housing 14. The output end of the motor 92 passes through the motor base 94 and is connected to the input end of the indexing turntable 93. The output end of the indexing turntable 93 is connected to the push rod 10. The push rod 10 passes through the steel ball 8, the first mounting block 72, the telescopic rod 71, and the second mounting block 73.

[0048] During operation, the second cylinder 91 drives the motor base 94 to move toward the rotary motor housing 14, and through the motor base 94 drives the push rod 10 to move toward the rotary motor housing 14 until the end of the push rod 10 abuts against the rotary motor housing 14; then, the motor 92 drives the push rod 10 to rotate 180° through the indexing turntable 93, and through the push rod 10 drives the rotary motor housing 14 to rotate 180°; after the rotary motor housing 14 has rotated, the second cylinder 91 drives the motor base 94 to move away from the rotary motor housing 14, and through the motor base 94 drives the push rod 10 to move away from the rotary motor housing 14 until the end of the push rod 10 is housed in the steel ball 8 or the first drive mechanism 7.

[0049] As a preferred option, such as Figure 5 and Figure 6As shown, at least two sets of limiting blocks 101 are evenly distributed circumferentially on the outer surface of the end of the push rod 10. Correspondingly, the rotary motor housing 14 is provided with limiting grooves 143 that are adapted to the limiting blocks 101. Specifically, the two sides of the rotary motor housing 14 are provided with first grooves 141 that are adapted to the exposed part of the steel ball 8 at the center of their longitudinal height. The bottom of the first groove 141 is provided with a second groove 142 that is adapted to the end of the push rod 10 and a limiting groove 143 that is adapted to the limiting blocks 101. 3. The limiting groove 143 is connected to the second groove 142. When the rotary motor housing 14 and the steel ball 8 are initially positioned, the exposed part of the steel ball 8 is embedded in the first groove 141. When the push rod 10 abuts against the rotary motor housing 14 and the rotary motor housing 14 is flipped, the end of the push rod 10 is embedded in the second groove 142, and the limiting block 101 on the outer surface of the push rod 10 is embedded in the limiting groove 143. The rotary motor housing 14 is driven to flip by the cooperation of the end face of the push rod 10 and the limiting block 101.

[0050] Preferably, the limiting groove 143 of the rotary motor housing 14 adopts a flared guide design so that the limiting block 101 can be smoothly embedded in the limiting groove 143. At the same time, the spherical surface of the steel ball 8 can also help the limiting block 101 to be smoothly embedded in the limiting groove 143.

[0051] As a preferred option, such as Figures 1-3 As shown, pressure plates 15 are provided in the upper and lower surface machining areas. The pressure plates 15 clamp and fix the rotary motor housing 14 by abutting against it and in conjunction with the baffle 5, so as to facilitate the milling cutter to machine the surface of the rotary motor housing 14. Preferably, the pressure plates 15 are connected to a lifting mechanism (such as a cylinder) and a steering motor, which can realize the vertical pressing and horizontal avoidance of the pressure plates to avoid interfering with the rotation of the rotary motor housing 14.

[0052] Preferably, the upper and lower surface machining areas are also provided with milling cutters for machining the surface of the rotary motor housing 14.

[0053] This embodiment also discloses a method for using a machining fixture for a rotary motor housing 14, the method comprising the following steps:

[0054] Step S1, at the loading and unloading area, the rotary motor housing 14 is placed in the receiving groove 4, the lower surface of the rotary motor housing 14 abuts against the contact baffle 5, and the exposed parts of the steel balls 8 on both sides of the rotary motor housing 14 are embedded and limited.

[0055] Step S2: After the rotary motor housing 14 is loaded, the turntable 1 rotates 90°, moving the receiving groove 4 containing the rotary motor housing 14 and the rotary motor housing 14 to the upper surface machining area. Then, the second drive mechanism 9 in one of the mounting grooves 6 (such as the mounting groove 6 located inside the receiving groove 4) operates, and the second cylinder 91 drives the push rod 10 to move toward the rotary motor housing 14 until the end of the push rod 10 abuts against the rotary motor housing 14, thus laterally restricting the rotary motor housing 14. Next, the pressure plate 15 at the upper surface machining area moves downward until it abuts against the rotary motor housing 14, cooperating with the baffle 5 to longitudinally clamp and fix the rotary motor housing 14. Then, the upper surface of the rotary motor housing 14 is machined using the milling cutter at the upper surface machining area. After machining, the pressure plate 15 moves upward to reset, and the push rod 10 moves back to reset.

[0056] Step S3: After the upper surface of the rotary motor housing 14 is machined, the turntable 1 rotates 90°, rotating the receiving groove 4 containing the rotary motor housing 14 and the rotary motor housing 14 to the flipping area; then, the second drive mechanisms 9 in both sets of mounting grooves 6 operate, and the two sets of second cylinders 91 drive their corresponding push rods 10 to move toward the rotary motor housing 14 until the ends of the push rods 10 abut against the rotary motor housing 14, using the cooperation of the two sets of push rods 10 to laterally clamp and fix the rotary motor housing 14; then, the baffle 5 below the receiving groove 4 is controlled by the first cylinder 1 The first cylinder 13 drives the lower opening of the receiving groove 4 to open, providing sufficient space for the rotary motor housing 14 to flip. Then, the motor 92 drives the push rod 10 to rotate 180° via the indexing turntable 93, and the rotation of the push rod 10 drives the rotary motor housing 14 to flip 180°, so that the lower surface of the rotary motor housing 14 flips upward and its upper surface flips downward. Next, the baffle 5 below the receiving groove 4 is driven by the first cylinder 13 to close the lower opening of the receiving groove 4, and the upper surface of the rotary motor housing 14 abuts against the baffle 5. Then, the second cylinder 91 drives the push rod 10 to move back to its original position.

[0057] Step S4: After the rotary motor housing 14 is flipped, the turntable 1 rotates 90°, moving the receiving groove 4 containing the rotary motor housing 14 and the rotary motor housing 14 to the lower surface machining area. Then, the second drive mechanism 9 in one of the mounting grooves 6 (such as the mounting groove 6 located inside the receiving groove 4) operates, and the second cylinder 91 drives the push rod 10 to move toward the rotary motor housing 14 until the end of the push rod 10 abuts against the rotary motor housing 14, thus laterally restricting the rotary motor housing 14. Next, the pressure plate 15 at the lower surface machining area moves downward until it abuts against the rotary motor housing 14, cooperating with the baffle 5 to longitudinally clamp and fix the rotary motor housing 14. Then, the lower surface of the rotary motor housing 14 is machined using the milling cutter at the lower surface machining area. After machining, the pressure plate 15 moves upward to reset, and the push rod 10 moves back to reset.

[0058] Step S5: After the lower surface of the rotary motor housing 14 is machined, the turntable 1 rotates 90° to move the receiving groove 4 containing the rotary motor housing 14 and the rotary motor housing 14 to the loading and unloading area, and the machined rotary motor housing 14 is taken out from the receiving groove 4.

[0059] During the machining of the rotary motor housing 14, the lower surface of the rotary motor housing 14 can be machined first, and then the upper surface can be machined. That is, the lower surface machining area is set upstream of the upper surface machining area. When machining the upper surface of the rotary motor housing 14, new rotary motor housing 14s that need to be machined can be loaded in the loading and unloading area at the same time. This allows the upper surface machining, flipping, lower surface machining, and loading and unloading operations of the rotary motor housing 14 to be performed in the same time period, thereby improving the machining efficiency of the rotary motor housing 14.

[0060] During the machining of the rotary motor housing 14, the baffle 5 can be opened in the flipping area and loading / unloading area to open the lower opening of the receiving groove 4, so as to facilitate the discharge of metal waste generated during the machining of the rotary motor housing 14.

[0061] Furthermore, in the tilting zone, to prevent problems such as poor contact, insufficient contact force, or inaccurate positioning when the second cylinder 91 drives the push rod 10 to abut against the rotary motor housing 14, which could affect the tilting of the rotary motor housing 14, pressure sensors and displacement sensors are introduced for closed-loop feedback control to improve the reliability of contact confirmation. Specifically:

[0062] A pressure sensor is installed at the end of the push rod 10 (e.g., at the center of the end face of the limit block 101). This pressure sensor is used to directly and in real time detect the contact pressure between the end of the push rod 10 and the rotary motor housing 14. A displacement sensor is installed on the piston rod of the second cylinder 91 (or on the mount of the synchronous linear motion motor 92). This displacement sensor is used to detect in real time the linear displacement of the push rod 10 as it extends from its initial retracted position. Simultaneously, the fixture is also equipped with a controller, which is electrically connected to the pressure sensor, displacement sensor, second cylinder 91, and motor 92. This controller can be a PLC, which stores preset parameters, including: effective contact force threshold. Theoretical contact displacement Displacement tolerance and speed threshold .

[0063] When the rotary motor housing 14 rotates to the tilting zone, the two sets of second drive mechanisms 9 operate, using the second cylinder 91 to drive the push rod 10 to extend. At this time, the controller synchronously reads the data from the two pressure sensors and the data from the two displacement sensors, and calculates their respective displacement change rates (i.e., instantaneous speeds) in real time.

[0064] Each push rod is judged independently, and the real-time data is checked to see if the following three conditions are met simultaneously:

[0065] Pressure conditions: Real-time contact pressure Reaching or exceeding the preset effective contact force threshold ,Right now ;

[0066] Displacement condition: Actual displacement of push rod 10 Contact displacement with the preset theoretical value The absolute error between them is less than or equal to the allowable displacement tolerance. ,Right now ;

[0067] Displacement stability condition: Real-time displacement change rate of push rod 10 The absolute value of (i.e., instantaneous velocity) is less than or equal to a very small velocity threshold. ,Right now ;

[0068] in, This is the real-time detection value of the pressure sensor at the end of the push rod 10; The safe contact force threshold is set based on the material and structural strength of the rotary motor housing 14; The real-time displacement of the push rod 10 is detected by the displacement sensor; The theoretical contact displacement between the rotary motor housing 14 and the fixture structure is calculated in advance; The allowable displacement error is generally taken as 0.05~0.2mm; The velocity threshold for determining displacement stability is generally set to 0.01~0.05 mm / s.

[0069] If the real-time data of a certain push rod 10 meets all the above adjustments, the controller immediately sends a command to the corresponding second cylinder 91 to stop its extension and enter the pressure holding state to maintain the current contact pressure.

[0070] The controller continuously monitors until both push rods 10 are determined to have reached a valid contact state. Only in this state is it determined that the double push rods 10 have completed the effective contact and a permission signal is generated to allow subsequent actions to be performed. After obtaining the permission signal, the baffle 5 opening operation, flipping operation, baffle 5 closing operation, and reset operation are performed in sequence.

[0071] During the contact process of push rod 10, the controller performs parallel anomaly detection: if the displacement of a certain push rod 10 is... Exceeding the theoretical contact displacement Displacement tolerance and safety displacement margin The sum of the contact pressures Still far below the effective contact force threshold If the contact is not made within the specified time window, it is determined to be an overtravel failure, and the system will stop and alarm, possibly indicating that the rotary motor housing 14 is missing or misaligned. If only one push rod 10 reports valid contact within the preset time window, it is determined to be a single-sided contact failure, and the system will stop and alarm to prevent overturning accidents caused by clamping imbalance.

[0072] By introducing dual closed-loop feedback from pressure and displacement sensors, combined with a multi-condition judgment mechanism, the reliability and safety of the rotary motor housing 14's clamping and tilting are improved. Simultaneously, in the tilting zone, the second drive mechanisms 9 within the two sets of mounting slots 6 must operate simultaneously, and the tilting action is only permitted after both push rods 10 have reached effective contact. This dual confirmation mechanism effectively prevents the rotary motor housing 14 from tilting or falling off due to poor contact on one side, thus improving the safety and stability of the tilting process.

[0073] It should be noted that the extension of the two second cylinders 91 is initiated by the controller issuing start commands in parallel, and the 180° rotation of the two motors 92 is initiated by the controller issuing start commands synchronously after receiving the "double push rod effective contact" signal; at the same time, an angle encoder can be equipped to ensure that the rotation angles of the two push rods 10 are consistent.

[0074] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A rotary motor housing machining fixture, comprising a turntable (1), a fixed base (2), and a base (3), characterized in that, The fixed seat (2) is sleeved on the outer surface of the turntable (1) and fixedly installed on the upper surface of the base (3). The turntable (1) is located above the base (3) and is rotatably connected to the fixed seat (2) and the base (3). The turntable (1) has four sets of upper and lower open receiving grooves (4) around its circumference, corresponding to the loading and unloading area, upper surface processing area, flipping area and lower surface processing area processed by the rotary motor housing (14). The turntable (1) has a baffle (5) for opening and closing the receiving groove (4) at the position corresponding to the receiving groove (4). The turntable (1) has mounting grooves (6) on both the inner and outer sides of the receiving groove (4). The mounting slot (6) is provided with a first drive mechanism (7) and a steel ball (8). The first drive mechanism (7) is connected to the steel ball (8) and drives the steel ball (8) to be partially exposed in the receiving slot (4). Each set of mounting slots (6) is also provided with a second drive mechanism (9) and a push rod (10). The second drive mechanism (9) is connected to the push rod (10) and drives the push rod (10) to move toward the rotary motor housing (14) in the receiving slot (4) in the flipping area until the end of the push rod (10) abuts against the rotary motor housing (14). The second drive mechanism (9) drives the push rod (10) to rotate so that the rotary motor housing (14) flips. The first drive mechanism (7) includes a telescopic rod (71), and the two ends of the telescopic rod (71) are respectively connected to a first mounting block (72) and a second mounting block (73). The first mounting block (72) is fixedly installed on the opposite side of the exposed part of the steel ball (8), and the second mounting block (73) is fixedly installed at the bottom of the mounting groove (6). A spring (74) is sleeved on the outer surface of the telescopic rod (71), and the two ends of the spring (74) respectively abut against the first mounting block (72) and the second mounting block (73). The second drive mechanism (9) includes a second cylinder (91), the output end of the second cylinder (91) is connected to a motor (92), the output end of the motor (92) is connected to an indexing turntable (93), and a push rod (10) is connected through the indexing turntable (93). The push rod (10) passes through the steel ball (8), the first mounting block (72), the telescopic rod (71), and the second mounting block (73). When the second drive mechanism (9) is running in the flipping zone, it detects in real time the contact pressure between the end of the push rod (10) and the rotary motor housing (14) and the displacement of the push rod (10) from the initial position, and judges the effective contact state of the push rod (10) according to the judgment mechanism. The determination mechanism is as follows: a valid contact is determined when all three of the following conditions are met simultaneously. Pressure conditions: Real-time contact pressure Reaching or exceeding the preset effective contact force threshold ; Displacement condition: The actual displacement of the push rod (10) Contact displacement with the preset theoretical value The absolute error between them is less than or equal to the allowable displacement tolerance. ; Displacement stability condition: real-time displacement change rate of the push rod (10) The absolute value is less than or equal to the speed threshold. .

2. The rotary motor housing machining fixture according to claim 1, characterized in that, The inner edge of the fixed base (2) is connected to a support ring (11), which is used to support the baffle (5) and is movably connected to the baffle (5). The support ring (11) is located in the flipping area and has a notch (12) that is adapted to the receiving groove (4).

3. A rotary motor housing machining fixture according to claim 1, characterized in that, A first cylinder (13) is installed on the lower surface of the turntable (1) at the position corresponding to the baffle (5), and the output end of the first cylinder (13) is connected to the baffle (5).

4. A rotary motor housing machining fixture according to claim 1, characterized in that, At least two sets of limiting blocks (101) are evenly distributed circumferentially on the outer surface of the end of the top rod (10).

5. A method of using a rotary motor housing machining fixture as described in any one of claims 1-4, characterized in that, Includes the following steps: Step S1, at the loading and unloading area, the rotary motor housing (14) is placed in the receiving groove (4), the lower surface of the rotary motor housing (14) abuts against the contact baffle (5), and the two sides of the rotary motor housing (14) are embedded and limited by the exposed parts of the steel balls (8). In step S2, the turntable (1) rotates 90° to move the rotary motor housing (14) to the upper surface machining area; then, the second drive mechanism (9) in one of the mounting slots (6) operates, and the second cylinder (91) drives the push rod (10) to move toward the rotary motor housing (14) until the end of the push rod (10) abuts against the rotary motor housing (14); then, the pressure plate (15) at the upper surface machining area moves downward and clamps and fixes the rotary motor housing (14) by abutting against the rotary motor housing (14); then, the milling cutter at the upper surface machining area performs machining on the upper surface of the rotary motor housing (14); In step S3, the turntable (1) rotates 90° to rotate the rotary motor housing (14) to the flipping area; then, the second drive mechanisms (9) in both sets of mounting slots (6) are in operation, and the two sets of second cylinders (91) drive the corresponding push rods (10) to move toward the rotary motor housing (14) until the end of the push rod (10) abuts against the rotary motor housing (14); then, the baffle (5) below the receiving slot (4) is driven by the first cylinder (13) to open the lower opening of the receiving slot (4); then, the motor (92) drives the push rod (10) to rotate 180° through the indexing turntable (93), and drives the rotary motor housing (14) to flip 180° through the rotation of the push rod (10); then, the baffle (5) below the receiving slot (4) is driven by the first cylinder (13) to close the lower opening of the receiving slot (4); In step S4, the turntable (1) rotates 90° to move the rotary motor housing (14) to the lower surface machining area; then, the second drive mechanism (9) in one of the mounting slots (6) operates, and the second cylinder (91) drives the push rod (10) to move toward the rotary motor housing (14) until the end of the push rod (10) abuts against the rotary motor housing (14); then, the pressure plate (15) at the lower surface machining area moves downward and clamps and fixes the rotary motor housing (14) by abutting against the lower surface of the rotary motor housing (14); then, the milling cutter at the lower surface machining area performs machining on the lower surface of the rotary motor housing (14); Step S5: Rotate the turntable (1) 90° to move the rotary motor housing (14) to the loading and unloading area and remove the finished rotary motor housing (14) from the receiving groove (4).

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