Medical aluminum product pneumatic staggered directional rotation processing clamp

Abstract

This utility model discloses a pneumatic misalignment and directional rotation machining fixture for medical aluminum products, including a positioning plate and anti-misalignment blocks. The positioning plate has a part hole on its side, and cylinders are fixedly connected to both sides of its upper surface. A manual valve is also provided on the upper surface of the positioning plate. The anti-misalignment blocks include anti-misalignment block I and anti-misalignment block II, which are connected to the inlet side of the part hole. Anti-misalignment block I and anti-misalignment block II respectively have positioning grooves II and III with different shapes and positions. This utility model, by setting a square contour on the top of the workpiece and setting a misalignment structure on the anti-misalignment blocks, and setting a stop block at the outlet end of the part hole to limit the height, avoids errors such as inversion and circumferential rotation during workpiece clamping, and ensures that the axial and radial positions of the workpiece are consistent each time it is clamped, providing a stable reference for subsequent processing without the need for additional clamping position adjustments, thus improving processing convenience.

Description

Technical Field

[0001] This utility model relates to the field of medical aluminum product processing fixtures, specifically a pneumatic misalignment and directional rotation processing fixture for medical aluminum products. Background Technology

[0002] Medical drawn aluminum products refer to components made of aluminum alloy materials through a drawing process and used in the medical field. They typically require precision machining such as cutting, drilling, and milling using CNC machine tools (computer numerical control machine tools) to meet the stringent standards for component compatibility and safety of medical equipment.

[0003] Current fixtures used for machining medical aluminum products have several drawbacks. Traditional fixtures often rely on a single outer cylindrical shape for positioning or manual visual alignment. Operators are prone to misalignment during clamping due to angular deviations, leading to parts being upside down or incorrectly rotated circumferentially. This results in parts produced by CNC machine tools having dimensions that do not match the design, generating scrap and increasing production costs. Furthermore, traditional fixtures often use manual bolt clamping, requiring manual tightening and loosening of bolts, which is time-consuming. Manual operation can also lead to uneven clamping forces on both sides, causing localized extrusion deformation in thin, lightweight, and easily deformable parts like medical aluminum, affecting surface quality and structural accuracy. Additionally, traditional fixtures can only machine a single surface of the part. After machining one surface, the part must be disassembled, the clamping direction adjusted, and repositioned. Multiple clamping operations significantly increase manual operation time and can cause inconsistent positional accuracy across machined surfaces due to datum deviations during each clamping, impacting production efficiency and product yield. Utility Model Content

[0004] The purpose of this invention is to provide a pneumatic misalignment and orientation rotational machining fixture for medical aluminum drawing products, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A pneumatic misalignment and orientation rotary machining fixture for medical aluminum products, used for clamping and machining medical aluminum products, comprising: The positioning plate has part holes on its side for inserting machined parts. Cylinders are fixedly connected to both sides of the upper end face of the positioning plate. The output end of the cylinder passes through the upper end face of the positioning plate and extends into the interior of the positioning plate to be fixedly connected to the pressure block. A manual valve is also fixedly installed on the upper end face of the positioning plate. The manual valve is connected to the cylinder pipeline. By operating the manual valve, the air intake and exhaust of the cylinders on both sides can be controlled synchronously, thereby driving the pressure blocks on both sides to rise and fall synchronously. The error-proof block includes error-proof block I and error-proof block II. The error-proof block is fixedly connected to the inlet side of the part hole by internal hex bolts. Error-proof block I and error-proof block II are respectively provided with positioning grooves II and III of different shapes and positions. Positioning grooves II and III cooperate with positioning parts II of different shapes and positions on both sides of the square contour of the top of the workpiece, so that the workpiece can be installed into the part hole at the correct angle and prevent the workpiece from being incorrectly clamped.

[0006] Furthermore, positioning grooves I are provided on both the upper and lower sides of the hole in the part, and protruding positioning parts I are provided on both the upper and lower sides of the machined part to prevent the part from being installed backwards.

[0007] Furthermore, a stop is fixedly connected to the outlet side of the part hole by an internal hex bolt. This stop is used to axially block the part after it is inserted into the part hole. The stop can support the end of the part and prevent it from falling out of the part hole outlet side due to its own weight or excessive insertion force, ensuring that the part can slide into the preset position at the bottom of the part hole.

[0008] Furthermore, a connecting plate is fixedly connected to the bottom of the positioning plate. The connecting plate has mounting holes and is fixedly connected to the indexing head by bolts. After the processing part is inserted into the part hole, part of the processing part is exposed on one side of the stop block. The indexing head drives the positioning plate and the processing part to rotate, and the processing multiple sides are processed.

[0009] Furthermore, the manual valve is fixedly connected to the upper surface of the positioning plate via a mounting plate, and a handle is provided on the side of the manual valve. The manual valve is connected to a one-way throttle valve via a rotary joint and an air pipe.

[0010] Furthermore, the one-way throttle valve is connected to the inlet pipe of the three-way pipe via an air pipe, and the two outlets of the three-way pipe are respectively connected to the air inlets of the cylinders on both sides of the upper surface of the positioning plate via air pipes.

[0011] Furthermore, the front ends of both the error-prevention block I and the error-prevention block II are provided with recessed grooves that are adapted to the shape of the square outline of the top of the workpiece, and the spacing between the error-prevention block I and the error-prevention block II is adapted to the width of the square outline of the top of the workpiece.

[0012] Furthermore, the indexing head is equipped with a motor, which can drive the indexing head to rotate the fixture around the rotation axis, thereby realizing the angle adjustment of the workpiece clamped on the fixture during the processing.

[0013] Furthermore, the indexing head and fixture are mounted as a whole on the machine tool, and the machine tool is equipped with a tool-changing electric spindle at the machining position of the fixture. The tool-changing electric spindle can rotate in coordination with the angle of the fixture to perform cutting machining on different machining surfaces of the workpiece.

[0014] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by setting a square contour on the top of the machined part and setting a misalignment structure on the anti-misalignment block, adapts the outer circle of the middle part to the part hole, and sets a stop block to limit the height at the exit end of the part hole, forms multiple anti-misalignment and positioning guarantees from three dimensions: top orientation, middle positioning, and bottom limiting. It can not only completely avoid errors such as inversion and circumferential rotation when the part is clamped, but also ensure that the axial and radial positions of the part are consistent each time it is clamped, providing a stable benchmark for subsequent processing, without the need for additional adjustment of the clamping position, thus improving the convenience of processing.

[0015] 2. This utility model, by setting up cylinders and using manual valves for control, uses a single manual valve in conjunction with a three-way pipe and a one-way throttle valve to achieve synchronous control of two cylinders of the same specifications. This can drive the pressure block to quickly complete the lifting and lowering action, greatly shortening the time spent on clamping and disassembling parts. It can also ensure that the air intake and output force of the cylinders on both sides are completely consistent, avoiding slight displacement of parts due to asynchronous clamping. At the same time, the arc-shaped pressure block can make the clamping force evenly distributed along the surface of the part, preventing deformation of medical aluminum parts due to excessive local stress, thus balancing processing efficiency and part quality.

[0016] 3. This utility model, by setting up a collaborative structure between the indexing head and the 4-axis machine tool, and in conjunction with the single-off clamping design of the fixture, allows the workpiece to be precisely rotated by the indexing head after a single clamping. At the same time, with the help of the CNC machine tool and the tool-changing electric spindle, the different surfaces of the workpiece are cut sequentially. There is no need to disassemble and reclamp the workpiece multiple times, which reduces the process flow and manual operation time, and avoids the reference deviation caused by multiple clamping, thereby improving processing efficiency and the consistency of workpiece accuracy. Attached Figure Description

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model.

[0018] Figure 2 This utility model Figure 1 Another perspective on the 3D schematic diagram.

[0019] Figure 3 This utility model Figure 2 Another perspective on the 3D schematic diagram.

[0020] Figure 4 This utility model Figure 3 A 3D schematic diagram of point A in the middle.

[0021] Figure 5 This is a three-dimensional schematic diagram of the cylinder driving the pressure block to press down in this utility model.

[0022] Figure 6This is a three-dimensional schematic diagram of the device installed on the indexing head in Embodiment 2 of this utility model.

[0023] Figure 7 This is a three-dimensional schematic diagram of the indexing head mounted on a CNC machine tool in Embodiment 2 of this utility model.

[0024] Figure 8 This utility model Figure 7 Another perspective on the 3D schematic diagram.

[0025] In the diagram: 1-Connecting plate, 2-Positioning plate, 201-Stop block, 202-Anti-misalignment block I, 203-Anti-misalignment block II, 204-Part hole, 205-Positioning groove I, 206-Positioning groove II, 207-Positioning groove III, 3-Processed part, 301-Positioning part I, 302-Positioning part II, 4-Cylinder, 401-Pressure block, 5-Manual valve, 501-Mounting plate, 502-Handle, 503-One-way throttle valve, 504-T-pipe, 6-Mounting hole, 7-Indexing head, 8-Motor, 9-Machine tool, 10-Tool changer electric spindle. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper end," "lower end," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model 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 utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] Example 1: Please see Figures 1 to 5 This utility model provides a technical solution: A pneumatic misalignment and orientation rotary machining fixture for medical aluminum products includes a positioning plate 2, wherein the positioning plate 2 has a through-hole 204 (e.g., a through-hole) along its long side. Figure 3 As shown), it is used to insert the cylindrical medical aluminum drawing part 3; in order to strengthen the prevention of vertical errors when the part is clamped, the upper and lower inner walls of the part hole 204 are provided with long strip-shaped positioning grooves I205, and the upper and lower outer circumferential surfaces of the part 3 are provided with protruding positioning parts I301 that are adapted to the shape and size of the positioning grooves I205. When the part is inserted, the positioning parts I301 need to be embedded in the positioning grooves I205 to be pushed in smoothly, thereby preventing the part 3 from being installed upside down in the structure.

[0030] Anti-misalignment blocks are fixedly installed on the outer side of the inlet end of part hole 204 by internal hex bolts. The anti-misalignment blocks include symmetrically distributed anti-misalignment blocks I 202 and II 203 (e.g., Figure 4 As shown), the distance between the two blocks matches the width of the square outline at the top of the machined part 3, ensuring that the top of the part can be precisely embedded between the two anti-misalignment blocks (as shown). Figure 2 As shown); both the error-proof block I 202 and the error-proof block II 203 have recessed grooves at their front ends facing the part hole 204 (as shown). Figure 4 (As shown).

[0031] In this embodiment, the anti-misalignment block I 202 and anti-misalignment block II 203 are fixed to the end face of the positioning plate 2 at the entrance end of the part hole 204 by hexagon socket bolts. The two are symmetrically distributed along the axis of the part hole 204. The anti-misalignment block I 202 has a positioning groove II 206 on the inner wall facing the part hole 204, and the anti-misalignment block II 203 has a positioning groove III 207 on the inner wall facing the part hole 204. The positions and dimensions of the two grooves are different. In terms of position, the groove openings of positioning groove II 206 and positioning groove III 207 are not symmetrical along the centerline of the part hole 204, resulting in a positional misalignment along the radial direction of the part hole 204. In terms of dimensions, the groove width and groove shape of positioning groove II 206 and positioning groove III 207 are different, making them unable to be interchanged. The corresponding machining part 3 has a positioning part II 302 integrally formed on the left and right outer ends of its top square contour. The left positioning part II 302 corresponds to the positioning groove II 206 of the anti-misalignment block I 202, and the right positioning part II 302 corresponds to the positioning groove III 207 of the anti-misalignment block II 203. The horizontal position, size, and outline of the single-sided positioning part II 302 are completely consistent with the horizontal position, internal space, and groove shape of the corresponding side positioning groove. When the part is inserted at the correct angle, the two positioning parts II 302 can be inserted into the positioning groove II 206 and positioning groove III 207 without interference, ensuring the accurate circumferential position of the part. If the part is rotated circumferentially (such as 90° or 180°) and the angle is incorrect, the two positioning parts II 302 will be offset or interfered with in size with the positioning groove II 206 and positioning groove III 207, and cannot be inserted into the groove, thus preventing the part from being clamped and realizing the left and right error prevention of the machining part 3.

[0032] A stop 201 is detachably connected to the outer side of the outlet end of the part hole 204 via an internal hex bolt. The inner end face of the stop 201 is higher than the outlet end of the part hole 204 (e.g., Figure 1 As shown, when the workpiece 3 is inserted from the inlet end and pushed to the bottom along the workpiece hole 204, the stop block 201 can support the end of the workpiece, forming an axial block to prevent the workpiece from falling out from the outlet end due to its own weight, while ensuring that the axial position of the workpiece is consistent each time it is clamped.

[0033] The inner wall of the hole 204 is precisely matched with the outer circumferential surface of the machined part 3. Its hole size and shape are consistent with the outer circumferential contour of the machined part 3, which can provide stable circumferential support for the part.

[0034] It should be noted that, since the inner end face of the stop 201 is higher than the outlet end of the part hole 204, when the workpiece 3 is pushed to the bottom of the part hole 204 and contacts the inner end face of the stop 201, the end of the workpiece will naturally protrude outward from the outlet end of the part hole 204 by a predetermined length (e.g., due to the height difference of the inner end face of the stop 201). Figure 1As shown, the stop 201 realizes the axial positioning and anti-drop function of the part, and at the same time reserves an exposed machining area for the end of the part. Without the need to adjust the clamping position of the part, the exposed end of the part can be directly cut by the machining component of the machine tool 9.

[0035] Two identical cylinders 4 are symmetrically distributed on both sides of the upper surface of the positioning plate 2 and are fixedly connected by bolts. The output end of the cylinder 4 penetrates vertically downward through the upper surface of the positioning plate 2 and extends into the interior of the positioning plate 2. The end of the output end is fixedly connected to the pressure block 401 by threads. By synchronously controlling the action of the two cylinders 4, the pressure block 401 can be driven to rise and fall synchronously to achieve clamping and releasing of the part. The lower end surface of the pressure block 401 is designed with an arc shape to fit the outer circumference of the workpiece 3. This ensures that it can fully contact the surface of the workpiece when clamping and ensures that the clamping force is evenly distributed along the surface of the workpiece, avoiding excessive local force that could cause deformation of the workpiece. The pneumatic synchronous control can quickly complete the lifting and lowering of the pressure block 401, shortening the clamping and disassembly time. It can also cooperate with the anti-misalignment block and the stop block 201 to ensure that the radial position of the workpiece is consistent each time it is clamped.

[0036] A manual valve 5 is fixedly installed on the upper end face of the positioning plate 2 via the mounting plate 501. Figure 1 As shown), the mounting plate 501 is fixedly connected to the upper surface of the positioning plate 2 by bolts. The side of the manual valve 5 is provided with a handle 502 for easy operation. The air outlet of the manual valve 5 is connected to the air pipe through a rotary joint. The other end of the air pipe is connected to the inlet of the one-way throttle valve 503. The outlet of the one-way throttle valve 503 is connected to the inlet of the three-way pipe 504 through the air pipe. The two outlets of the three-way pipe 504 are respectively connected to the air inlets of the two cylinders 4 on both sides through the air pipe. All the connection parts of the air pipe and the joint are fitted with sealing gaskets to prevent compressed gas leakage.

[0037] In this embodiment, by operating the handle 502 of the manual valve 5, the on / off state and flow direction of the compressed gas can be controlled. After the gas flow rate is adjusted by the one-way throttle valve 503, it is synchronously diverted to the cylinders 4 on both sides through the three-way pipe 504 to achieve synchronous clamping of the pressure block 401. The air outlet of the cylinder 4 is connected to another set of three-way pipes 504 through the air pipe, and then converged to the exhaust port of the manual valve 5 to form a complete exhaust circuit, ensuring that the pressure block 401 is synchronously reset. By using a single manual valve 5 to uniformly control the gas flow and direction, and cooperating with the three-way pipe 504 to synchronously divert the gas, it is ensured that the air intake of the cylinders 4 on both sides is completely consistent. This drives the pressure block 401 to achieve absolutely synchronous up and down clamping action, effectively avoiding slight displacement of the part within the part hole 204 due to asynchronous clamping on both sides, and ensuring the stability of the part machining datum. The one-way throttle valve 503 can flexibly adjust the gas flow rate, and can adjust the lifting speed of the cylinder 4 to a suitable range according to the material characteristics and clamping requirements of the medical aluminum drawing product. This avoids damage to the pressure block 401 from collision with the part due to excessive speed, and also prevents processing efficiency from being affected by excessively slow speed. The manual valve 5 and the one-way regulating valve work together to ensure that the clamping force output by the cylinders 4 on both sides is uniform and consistent. Combined with the close fit of the arc-shaped pressure block 401, it further ensures that the force on the surface of the part is balanced, avoiding part deformation or clamping loosening caused by large or small force on one side, and adapting to the stringent requirements of clamping accuracy and stability for medical aluminum drawing products.

[0038] It should be noted that cylinder 4 is preferably an Airtac ultra-thin cylinder 4, model ACQ-50-10; an Airtac muffler, model BSLM01, is preferably installed at the exhaust port of manual valve 5 to reduce exhaust noise; manual valve 5, which controls the gas flow and direction, is preferably an Airtac manual valve 5, model 4L210-06; and the rotary joint used to connect the exhaust port of manual valve 5 to the air pipe is preferably a MISUMI rotary joint, model RTCNL6-1.

[0039] In this embodiment, the operator holds the medical aluminum drawing part 3 and aligns the square outline of the top of the part with the anti-misalignment block I 202 and anti-misalignment block II 203 at the entrance end of the part hole 204. The positioning part I 301 on the upper and lower outer circumferential surfaces of the part is aligned with the positioning groove I 205 on the upper and lower inner walls of the part hole 204. Simultaneously, the positioning parts II 302 on the left and right sides of the part are aligned with the positioning groove II 206 of anti-misalignment block I 202 and the positioning groove III 207 of anti-misalignment block II 203, respectively. If the angle or direction of the part is incorrect, the positioning parts I 301 and II 302 will interfere with the corresponding positioning grooves, preventing the part from being pushed forward, thus completing the misalignment orientation. Once the part is in the correct orientation... Then, push it horizontally along the part hole 204 until the end of the part contacts the inner end face of the stop 201 at the outlet end of the part hole 204. At this time, the part stops pushing due to the block 201, thus achieving axial positioning. Subsequently, the operator turns the handle 502 of the manual valve 5 in the middle of the upper end face of the positioning plate 2 to control the compressed gas to enter the pneumatic circuit. After the gas flow rate is adjusted by the rotary joint and the one-way throttle valve 503, it is synchronously split to the cylinders 4 on both sides through the three-way pipe 504, driving the output end of the cylinder 4 to extend vertically downward, driving the pressure block 401 to press down synchronously until the lower end face of the arc-shaped pressure block 401 is tightly attached to the outer circumference of the part, thus completing the stable clamping of the part.

[0040] The fixture can complete the processing with a single misalignment clamping. Combined with pneumatic clamping, it can ensure that the clamping force is applied to the parts evenly and consistently, maximizing the stability of the processing quality of medical aluminum products and greatly improving processing efficiency. Moreover, compared with existing related technologies that require multiple clamping processes, the number of processes is reduced, the process is shortened, and the time spent on manual operation is also reduced, further optimizing the production process and reducing labor costs.

[0041] Example 2: Please see Figure 6 This utility model provides a technical solution: like Figure 6 As shown, in Embodiment 1, the bottom of the positioning plate 2 of the fixture is fixedly connected to the connecting plate 1 by bolts. The connecting plate 1 has a mounting hole 6 that is adapted to the output end of the indexing head 7. The connecting plate 1 is fixed to the turntable d of the indexing head 7 by high-strength bolts, so that the positioning plate 2 can rotate synchronously with the indexing head 7.

[0042] A motor 8 is fixedly installed on the indexing head 7. The output shaft of the motor 8 drives the output end of the indexing head 7 to rotate through gear transmission, thereby driving the fixture and the clamped workpiece 3 to precisely adjust the angle around the rotation axis. The angle adjustment accuracy can meet the position requirements of multi-faceted processing of medical parts.

[0043] It should be noted that the indexing head 7 is preferably a high-precision indexing head 7 from the YUKIWA brand, which has a high-rigidity transmission structure and precise indexing and positioning function, ensuring accurate positioning of the fixture during angular rotation and meeting the angular tolerance requirements for multi-face machining of the workpiece 3; the matching motor 8 is a stepper motor 8, which can achieve precise angle control through pulse signals, and work with the tool-changing electric spindle 10 of the machine tool 9 to complete continuous cutting of different machining surfaces, improving the machining efficiency of the workpiece and ensuring consistent machining accuracy.

[0044] Example 3: Please see Figures 7 to 8 This utility model provides a technical solution: like Figure 7 As shown, the indexing head 7 and fixture described in embodiments 1 and 2 are bolted to the worktable of the CNC machine tool. The machining area of ​​the machine tool 9 is equipped with a tool-changing electric spindle 10 on the side of the fixture. The tool-changing electric spindle 10 can automatically change tools such as milling cutters according to machining requirements. When the workpiece 3 is inserted into the workpiece hole 204, part of its structure is exposed at the end near the stop 201. During machining, the motor 8 drives the indexing head 7 to rotate the workpiece, so that different surfaces of the workpiece are aligned with the tool-changing electric spindle 10 in sequence. The tool-changing electric spindle 10 cooperates to complete multi-face cutting machining. Multi-face machining can be achieved without disassembling the workpiece, thus improving machining efficiency.

[0045] The machine tool 9 is preferably a 4-axis machine tool, which has three linear motion directions (x, y, z) and one rotary motion, and can achieve complex trajectory machining through multi-axis linkage control. The rotary axis of the 4-axis machine tool and the indexing head 7 drive system work in precise coordination, so that when the fixture drives the workpiece 3 to complete the angular rotation, the machining position of the tool-changing electric spindle 10 can be controlled simultaneously through the feed motion in the x, y, and z axes, ensuring that stable feed accuracy and cutting parameters can be maintained for cutting, drilling and other processes on different surfaces of the workpiece 3.

[0046] The following is a detailed introduction: The indexing head 7 and fixture are integrally mounted on the machine tool 9, which has a U-shaped frame. The motor 8 is mounted on the indexing head 7, which is mounted on the base s. C-shaped support frames e are mounted on the front and rear sides of the base s, each equipped with support feet u to facilitate placement of the base s on the ground or other installation locations. A bottom guide post a is installed between the two C-shaped support frames e, and guide sleeves g are installed on both sides of the bottom of the machine tool 9 for the bottom guide post a to slide through. A lead screw f is installed through the center of the bottom of the machine tool 9, with both ends of the lead screw f fitted onto bearings q located on the front and rear C-shaped support frames e. A drive motor g for driving the lead screw f is mounted on the front C-shaped support frame e. Both ends of the guide post a are fitted into bushings i located on the C-shaped support frame e.

[0047] By driving the lead screw f to rotate via the drive motor g, the machine tool 9 and the components mounted on it can move back and forth (i.e. along the x-axis) relative to the base s when the bottom guide post a and the guide sleeve g are engaged.

[0048] A U-shaped support r has a lead screw b that passes through and is threaded to the support r. Both ends of the lead screw b are fitted onto bearings q located on machine tool 9. A drive motor n for rotating the lead screw b is mounted on the left side outside machine tool 9. A guide rod / column v is fitted onto the support r, with both ends fitted into bushings i located on machine tool 9. A drive motor m is mounted on the top of the support r, and a sub-support p is located inside the support r. A lead screw c passes through the sub-support p and is threaded to the sub-support p. Both ends of the lead screw c are fitted onto bearings q located on the support r, and the drive motor m is used to drive the lead screw c to rotate. A guide rod k is fitted onto the sub-support p, with both ends fitted into bushings i located on the support r.

[0049] By driving the lead screw b to rotate via the drive motor n, and with the support r and guide rod v engaged, the support r can move back and forth within the machine tool 99 (i.e., along the y-axis). Furthermore, by driving the lead screw c to rotate via the drive motor m, and with the sub-support p and guide rod k engaged, the sub-support p can move up and down within the support r (i.e., along the z-axis).

[0050] It should be noted that in this embodiment, the bottom of the machine tool 9 has a gap from the ground to facilitate forward and backward movement. The bottom guide post a and the lead screw f are located in the same horizontal plane, the guide rod k and the lead screw c are located in the same vertical plane, and the guide rod v and the lead screw b are located in the same vertical plane. The number of bottom guide posts a, guide rod k, and guide rod v are all symmetrically two.

[0051] The indexing head 7 has a rotating shaft equipped with a turntable d, which is used to mount and fix the mounting plate 501. By rotating the turntable d of the indexing head 7, the mounting plate 501 and the components it mounts are rotated to facilitate the processing of the workpiece 3.

[0052] In this embodiment, by cooperating with the drive motor g and the lead screw f, the positions of the machine tool 9 and the base s can be changed, thereby enabling the electric spindle and the fixture to change and adjust their positions forward and backward; by cooperating with the drive motor n and the lead screw b, the positions of the support r and the base s can be changed, thereby enabling the electric spindle and the fixture to change and adjust their positions left and right; by cooperating with the drive motor m and the lead screw c, the positions of the sub-support p and the base s can be changed, thereby enabling the electric spindle and the fixture to change and adjust their positions up and down.

[0053] The changes and adjustments to the front-back position, the left-right position, and the up-down position are the three linear motion directions mentioned above (x, y, z); the rotation of the electric spindle along the z-axis is the one rotational motion mentioned above.

[0054] Machine tool 9 has a control system such as a PLC control system to enable logical control of various electrical control devices such as drive motors n, g, m and motor 8. This is an existing mature control method or technology, which will not be described in detail here.

[0055] In summary, when using this invention, the medical aluminum drawing product part 3 to be processed is inserted into the part hole 204 of the positioning plate 2 according to the error-proof structure requirements. After the error-proof block and stop block 201 complete the orientation and axial positioning, the cylinder 4 is driven by the manual valve 5 to drive the pressure block 401 to clamp the part. Subsequently, the PLC control system of the machine tool 9 is used to control the drive motors g, n, and m to realize the movement of the machine tool 9 in the x, y, and z axes, respectively, and adjust the relative position of the tool-changing electric spindle 10 and the part. At the same time, combined with the indexing head 7 motor 8 driving the turntable to rotate, the part is rotated, so that the tool-changing electric spindle 10 can perform cutting processing on different surfaces of the part in sequence, and multi-face processing can be completed without disassembling the part.

[0056] The parts of this utility model not described are existing technology, or may be the same as existing technology, or may be known technology, or may be implemented using existing technology, and will not be described in detail here.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A medical aluminum product gas-operated misaligned directional rotary machining fixture, characterized in that, include: Positioning plate (2), the side of the positioning plate (2) is provided with part holes (204) for inserting processing parts (3), and cylinders (4) are fixedly connected to both sides of the upper end face of the positioning plate (2). The output end of the cylinder (4) passes through the upper end face of the positioning plate (2) and extends into the interior of the positioning plate (2) to be fixedly connected to the pressure block (401). A manual valve (5) is also fixedly provided on the upper end face of the positioning plate (2). The manual valve (5) is connected to the cylinder (4) through a pipe. By operating the manual valve (5), the air intake and exhaust of the cylinders (4) on both sides can be controlled synchronously, thereby driving the pressure blocks (401) on both sides to rise and fall synchronously. The error prevention block includes error prevention block I (202) and error prevention block II (203). The error prevention block is fixedly connected to the inlet side of the part hole (204) by internal hex bolts. The error prevention block I (202) and error prevention block II (203) are respectively provided with positioning grooves II (206) and positioning groove III (207) with different shapes and positions. The positioning grooves II (206) and positioning groove III (207) cooperate with the positioning parts II (302) with different shapes and positions on both sides of the square contour of the top of the workpiece (3) so that the workpiece (3) can be installed into the part hole (204) at the correct angle, and prevent the workpiece (3) from being incorrectly clamped.

2. The pneumatic misalignment and orientation rotary machining fixture for medical aluminum drawing products as described in claim 1, characterized in that, The upper and lower sides of the part hole (204) are provided with positioning grooves I (205), and the upper and lower sides of the processed part (3) are provided with protruding positioning parts I (301).

3. The pneumatic misalignment and orientation rotary machining fixture for medical aluminum drawing products as described in claim 1, characterized in that, A stop (201) is fixedly connected to the outlet side of the part hole (204) by an internal hex bolt, which is used to form an axial block on the part after the machining part (3) is put into the inlet of the part hole (204).

4. The pneumatic misalignment and orientation rotary machining fixture for medical aluminum drawing products as described in claim 3, characterized in that, The bottom of the positioning plate (2) is fixedly connected to a connecting plate (1). The connecting plate (1) has an installation hole (6) and is fixedly connected to the indexing head (7) by bolts. After the processing part (3) is inserted into the part hole (204), part of the processing part (3) is exposed on one side of the stop block (201).

5. The pneumatic misalignment and orientation rotary machining fixture for medical aluminum drawing products as described in claim 1, characterized in that, The manual valve (5) is fixedly connected to the upper end face of the positioning plate (2) via the mounting plate (501). The manual valve (5) has a handle (502) on its side. The manual valve (5) is connected to the one-way throttle valve (503) via a rotary joint and an air pipe.

6. The pneumatic misalignment and orientation rotary machining fixture for medical aluminum drawing products as described in claim 5, characterized in that, The one-way throttle valve (503) is connected to the inlet pipe of the three-way pipe (504) through an air pipe, and the two outlets of the three-way pipe (504) are respectively connected to the air inlets of the cylinders (4) on both sides of the upper end face of the positioning plate (2) through air pipes.

7. The pneumatic misalignment and orientation rotary machining fixture for medical aluminum drawing products as described in claim 1, characterized in that, The front ends of both the anti-mistake block I (202) and the anti-mistake block II (203) are provided with recessed grooves that are adapted to the shape of the square outline of the top of the workpiece (3), and the spacing between the anti-mistake block I (202) and the anti-mistake block II (203) is adapted to the width of the square outline of the top of the workpiece (3).

8. The pneumatic misalignment and orientation rotary machining fixture for medical aluminum drawing products as described in claim 4, characterized in that, The indexing head (7) is equipped with a motor (8), which can drive the indexing head (7) to rotate the fixture around the rotation axis.

9. A pneumatic misalignment and orientation rotary machining fixture for medical aluminum drawing products as described in claim 8, characterized in that, The indexing head (7) and fixture are mounted on the machine tool (9). The machine tool (9) is equipped with a tool changer spindle (10) corresponding to the machining position of the fixture. The tool changer spindle (10) can rotate in coordination with the angle of the fixture to perform cutting machining on different machining surfaces of the workpiece (3).

Images