An automatic CNC milling fixture

Abstract

This invention discloses an automatic CNC milling fixture in the field of artificial joint processing and manufacturing technology. An adjustment component is provided on the upper part of the cylinder pressure plate to adapt to the rotation of the cylinder pressure plate. A cleaning component is provided above the adjustment component to clean impurities on the CNC fixture. A flexible pressing component is provided above the cylinder pressure plate to press and fix the hip joint forging. Driven by the cleaning component, the flexible pressing component presses the grooves on the surface of the hip joint forging after the surface has been cleaned, preventing scratches on the grooves. Furthermore, because the contact area between the flexible clamping block and the grooves on the surface of the hip joint forging is made of flexible material, the flexible clamping block can deform accordingly to press the grooves on the surface of the hip joint forging, preventing the hip joint forging from shifting.

Description

Technical Field

[0001] This invention relates to the field of artificial joint processing and manufacturing technology, specifically to a CNC milling automatic fixture. Background Technology

[0002] Titanium alloy hip joint forgings are devices used for artificial hip joint implantation. They are typically forged from titanium alloy materials and have excellent mechanical properties and biocompatibility.

[0003] When machining titanium alloy hip joint forgings, a CNC fixture is required to fix the forgings. Before machining, a CNC program is prepared according to the product. The tool mills along the outer contour of the product according to the program. When the tool passes the corner cylinder of the CNC fixture, the cylinder pressure plate is lifted. At this time, the pressure plates of the other three cylinders are kept in a pressed state. When the tool passes this cylinder, the cylinder pressure plate falls and presses down. Then the next cylinder pressure plate is lifted, and so on until the milling is completed. Once all cylinder pressure plates are lifted, the machining is completed. The machined product is removed, another unmachined blank is installed, and the next machining cycle begins.

[0004] When machining hip joint forgings, the corresponding cylinder pressure plate is raised. After the tool cuts, some debris will fall onto the hip joint forging. If the cylinder pressure plate is used to press and fix it at this time, the debris will wear down the hip joint forging. Since the hip joint forging is to be implanted into the human body, it is necessary to avoid wear on the hip joint forging.

[0005] Based on this, the present invention designs an automatic CNC milling fixture to solve the problem that after the above-mentioned cutting tool cuts, some debris will fall on the hip joint forging. At this time, directly pressing and fixing it with a cylinder pressure plate will cause the debris to wear on the hip joint forging. Since the hip joint forging is to be implanted into the human body, it is necessary to avoid the problem of wear on the hip joint forging. Summary of the Invention

[0006] The purpose of this invention is to provide an automatic CNC milling fixture to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A CNC milling automatic fixture includes a CNC fixture and a cylinder pressure plate. Multiple cylinder pressure plates are fixedly connected to the upper part of the CNC fixture. An adjustment component is provided on the upper part of each cylinder pressure plate to accommodate the rotational movement of the cylinder pressure plate. A cleaning component is provided on the upper part of the adjustment component to clean impurities from the CNC fixture. A flexible pressing component is provided on the upper part of the cylinder pressure plate to press and fix a hip joint forging.

[0009] The adjustment assembly includes: a sleeve, a first hinge rod, a drive rod, a fixing member, and a connecting column. The sleeve is fitted with a lifting rod connected to the cylinder pressure plate. The shaft on the outer wall of the sleeve is rotatably connected to the lower part of the first hinge rod. The upper part of the first hinge rod is rotatably connected to the upper pressure plate of the cylinder pressure plate. The end of the first hinge rod is fixedly connected to one end of the drive rod. The other end of the drive rod is fixedly connected to the end of the connecting column. The rod body of the connecting column is fixedly connected to the middle part of the fixing member. The end of the fixing member is fixedly connected to the cleaning assembly.

[0010] The hinge rod one further includes: hinge rod two and a fixed shaft. The end of the hinge rod one is rotatably connected to one end of the hinge rod two, and the other end of the hinge rod two is rotatably connected to the end of the fixed shaft. The fixed shaft passes through and is rotatably connected to the pressure plate of the cylinder pressure plate.

[0011] The cleaning assembly includes: a push rod, a double-headed slide, a steering component, a cleaning brush, and a guide block. The upper end face of the double-headed slide is fixedly connected to the end of the fixing component. A groove in the middle of the double-headed slide is slidably connected to the guide block. The lower end face of the guide block is fixedly connected to the pressure plate of the cylinder pressure plate. A straight groove is provided on the side of the double-headed slide. The straight groove is slidably connected to one end of the push rod. The other end of the push rod is fixedly connected to one end of the steering component. The other end of the steering component is fixedly connected to the end of the cleaning brush.

[0012] The jacking rod also includes a connecting block and a limiting member. One end of the jacking rod is fixedly connected to the end of the steering member, and the other end of the jacking rod is fixedly connected to one end of the connecting block. The other end of the connecting block is fixedly connected to the middle of the cylinder pressure plate, and the middle of the connecting block is slidably connected to the straight groove.

[0013] The steering component also includes a through column, the end of the steering component is fixedly connected to the end of the through column, the column body of the through column is fixedly connected to the end of the jacking rod, and the through column is rotatably connected to the pressure plate of the cylinder pressure plate.

[0014] The flexible extrusion assembly includes: a flexible clamping block, an elastic pressure member, and an extrusion plate. The end of the extrusion plate is fixedly connected to the middle of the cleaning assembly. The elastic pressure member is slidably connected to the pressure plate of the cylinder pressure plate. The end of the elastic pressure member is fixedly connected to the middle of the flexible clamping block. The flexible clamping block is slidably connected to a groove opened in the cylinder pressure plate.

[0015] The elastic pressure component further includes: a spring and a sliding column. The lower end of the elastic pressure component is fixedly connected to one end of the sliding column, and the other end of the sliding column is fixedly connected to the middle of the flexible clamping block. The sliding column is slidably connected to the pressure plate of the cylinder pressure plate, and a spring is sleeved and connected to the outer wall of the sliding column.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The present invention, through the setting of the adjustment component, enables the adjustment component to adapt to the movement of the cylinder pressure plate when the cylinder pressure plate is performing steering or extension / retraction movements, thereby avoiding the adjustment component affecting the movement of the cylinder pressure plate;

[0018] 2. This invention cleans the hip joint forging near the cylinder pressure plate by adjusting the action of the drive cleaning component, thus avoiding the friction of waste chips that would scratch the surface of the hip joint forging when the cylinder pressure plate directly squeezes it, thereby improving the precision of the hip joint forging and preventing the cylinder pressure plate from being scratched.

[0019] 3. This invention drives a flexible extrusion component through a cleaning component, enabling the flexible extrusion component to press the grooves on the surface of the hip joint forging after the surface of the hip joint forging has been cleaned. This avoids scratching the grooves on the surface of the hip joint forging. Furthermore, because the contact area between the flexible clamp and the groove on the surface of the hip joint forging is made of flexible material, the flexible clamp can also deform accordingly to press the grooves on the surface of the hip joint forging tightly, preventing the hip joint forging from shifting. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention and the CNC fixture;

[0021] Figure 2 This is a schematic diagram of the cylinder pressure plate and the front three-dimensional structure of the present invention.

[0022] Figure 3 This is a three-dimensional structural diagram of the cylinder pressure plate and the left side of the present invention.

[0023] Figure 4 for Figure 3 A magnified structural diagram of part A;

[0024] Figure 5 This is a top-view perspective schematic diagram of the cylinder pressure plate and the present invention.

[0025] Figure 6 for Figure 5 A schematic diagram of the enlarged structure of part B;

[0026] Figure 7 This is a bottom-view perspective view of the cylinder pressure plate and the three-dimensional structure of the present invention.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1. CNC fixture; 2. Cylinder pressure plate; 3. Adjustment assembly; 31. Sleeve; 32. Hinge rod one; 321. Hinge rod two; 322. Fixed shaft; 33. Drive rod; 34. Fixing component; 341. Connecting column; 4. Cleaning assembly; 40. Push rod; 401. Connecting block; 402. Limiting component; 41. Double-headed slide; 411. Straight groove; 42. Turning component; 421. Through column; 43. Cleaning brush; 44. Guide block; 5. Flexible extrusion assembly; 50. Flexible clamping block; 51. Elastic pressure component; 511. Spring; 512. Sliding column; 52. Extrusion plate. Detailed Implementation

[0029] Please see Figure 1 , Figure 2 This invention provides a technical solution: a CNC milling automatic fixture, including a CNC fixture 1 and a cylinder pressure plate 2. Multiple cylinder pressure plates 2 are fixedly connected to the upper part of the CNC fixture 1. An adjustment component 3 is provided on the upper part of each cylinder pressure plate 2 to adapt to the rotational movement of the cylinder pressure plate 2. A cleaning component 4 is provided on the upper part of the adjustment component 3 to clean impurities on the CNC fixture 1. A flexible pressing component 5 is provided on the upper part of each cylinder pressure plate 2 to press and fix the hip joint forging.

[0030] When machining hip joint forgings, after the tool has finished cutting the hip joint forging at the pressure plate of cylinder pressure plate 2, the telescopic rod on the upper part of cylinder pressure plate 2 will drive the pressure plate to rotate to the upper part of the hip joint forging, and then move down to press the hip joint forging. As the pressure plate of cylinder pressure plate 2 rotates, the adjusting component 3 will also rotate adaptively with the pressure plate. When the pressure plate of cylinder pressure plate 2 moves down, the adjusting component 3 will fold, thereby causing the adjusting component 3 to drive the cleaning component 4 to move towards the end of the pressure plate of cylinder pressure plate 2. At this time, the cleaning component 4 will remove the scattered parts of the hip joint forging. Waste chips on the joint forging are cleaned to prevent wear on the surface of the hip joint forging if the waste chips are not cleaned in time when the cylinder pressure plate 2 presses directly. When the cleaning component 4 moves, it drives the flexible extrusion component 5 to move, so that the flexible extrusion component 5 extends out of the groove of the cylinder pressure plate 2. At this time, the flexible material of the flexible extrusion component 5 will extrude multiple grooves of the hip joint forging, increase the fixed area, and prevent the hip joint forging from shifting during the movement of the cylinder pressure plate 2, thus preventing inaccurate processing.

[0031] As a further aspect of the present invention, please refer to Figure 2 , Figure 3 , Figure 5The adjusting assembly 3 includes: a sleeve 31, a hinge rod 32, a drive rod 33, a fixing member 34, and a connecting column 341. The sleeve 31 is sleeved and connected to the lifting rod of the cylinder pressure plate 2. The shaft of the outer wall of the sleeve 31 is rotatably connected to the lower part of the hinge rod 32. The upper part of the hinge rod 32 is rotatably connected to the upper pressure plate of the cylinder pressure plate 2. The end of the hinge rod 32 is fixedly connected to one end of the drive rod 33. The other end of the drive rod 33 is fixedly connected to the end of the connecting column 341. The rod body of the connecting column 341 is fixedly connected to the middle part of the fixing member 34. The end of the fixing member 34 is fixedly connected to the cleaning assembly 4.

[0032] The first hinge rod 32 further includes: a second hinge rod 321 and a fixed shaft 322. The end of the first hinge rod 32 is rotatably connected to one end of the second hinge rod 321, and the other end of the second hinge rod 321 is rotatably connected to the end of the fixed shaft 322. The fixed shaft 322 is rotatably connected to the pressure plate of the cylinder pressure plate 2.

[0033] When the cylinder pressure plate 2 rotates, it drives the fixed shaft 322 to rotate synchronously. At this time, the fixed shaft 322 drives the hinge rod 32 to rotate synchronously via the second hinge rod 321. Because the sleeve 31 is fitted onto the telescopic rod at the top of the cylinder pressure plate 2, the sleeve 31 connected to the hinge rod 32 will also rotate. Therefore, the adjusting assembly 3 can utilize the rotation of the cylinder pressure plate 2. When the cylinder pressure plate 2 presses against the hip joint forging placed in the CNC fixture 1, this... When the cylinder pressure plate 2 is pressed, the fixed shaft 322 will slide down. At this time, the fixed shaft 322 will abut against the second hinge rod 321 and fold towards the first hinge rod 32. At this time, the drive rod 33 connected to the end of the first hinge rod 32 will slide towards the end of the cylinder pressure plate 2. Then, the drive rod 33 will drive the fixing member 34 to slide through the connecting column 341. At this time, the groove opened in the middle of the fixing member 34 will slide under the restriction of the guide block 44, so that the fixing member 34 drives the cleaning component 4 to move.

[0034] By adjusting the settings of component 3, when the cylinder pressure plate 2 is performing steering or telescopic movements, component 3 can adapt to the movement of cylinder pressure plate 2, thus avoiding affecting the movement of cylinder pressure plate 2.

[0035] As a further aspect of the present invention, please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6The cleaning assembly 4 includes: a push rod 40, a double-headed slide 41, a steering component 42, a cleaning brush 43, and a guide block 44. The upper end face of the double-headed slide 41 is fixedly connected to the end of the fixing component 34. The groove in the middle of the double-headed slide 41 is slidably connected to the guide block 44. The lower end face of the guide block 44 is fixedly connected to the pressure plate of the cylinder pressure plate 2. A straight groove 411 is provided on the side of the double-headed slide 41. The straight groove 411 is slidably connected to one end of the push rod 40. The other end of the push rod 40 is fixedly connected to one end of the steering component 42. The other end of the steering component 42 is fixedly connected to the end of the cleaning brush 43.

[0036] The push rod 40 further includes: a connecting block 401 and a limiting member 402. One end of the push rod 40 is fixedly connected to the end of the steering member 42, and the other end of the push rod 40 is fixedly connected to one end of the connecting block 401. The other end of the connecting block 401 is fixedly connected to the middle part of the cylinder pressure plate 2, and the middle part of the connecting block 401 is slidably connected to the straight groove 411.

[0037] The steering component 42 also includes a through column 421, the end of the steering component 42 is fixedly connected to the end of the through column 421, the column body of the through column 421 is fixedly connected to the end of the jacking rod 40, and the through column 421 is rotatably connected to the pressure plate of the cylinder pressure plate 2.

[0038] When the double-headed slide 41 is pushed by the fixing member 34 towards the end of the cylinder pressure plate 2, the straight groove 411 on the side of the double-headed slide 41 will also move synchronously. At this time, the straight groove 411 will abut against the connecting block 401, causing the connecting block 401 to drive the push rod 40 to rotate. When the connecting block 401 rotates, the limiting member 402 can always limit the position of the connecting block 401, preventing the connecting block 401 from leaving the straight groove 411. At this time, the connection between the push rod 40 and the connecting block 401 will move towards the upper part of the straight groove 411. The push rod 40 is fixedly connected to the through column 421, so the connection between the push rod 40 and the through column 421 will also rotate. At this time, the connection between the steering component 42 and the through column 421 will also rotate synchronously, so that the connection between the steering component 42 and the cleaning brush 43 rotates 90 degrees. At this time, the rotating cleaning brush 43 will clean the waste scattered on the hip joint forging, so that there are no foreign objects on the surface of the hip joint forging. At this time, the cleaning brush 43, which has been rotated to the position, will not affect the action of the cylinder pressure plate 2, thus avoiding interference between the two.

[0039] By adjusting the action of component 3 to drive cleaning component 4, the hip joint forging near the pressure plate of cylinder pressure plate 2 is cleaned. This prevents the friction of waste chips from scratching the surface of the hip joint forging when the pressure plate of cylinder pressure plate 2 directly squeezes it, thereby improving the precision of the hip joint forging and preventing the pressure plate of cylinder pressure plate 2 from being scratched.

[0040] As a further aspect of the present invention, please refer to Figure 2 , Figure 3 , Figure 5 , Figure 7 The flexible extrusion assembly 5 includes: a flexible clamping block 50, an elastic pressure member 51, and an extrusion plate 52. The end of the extrusion plate 52 is fixedly connected to the middle of the cleaning assembly 4. The elastic pressure member 51 is slidably connected to the pressure plate of the cylinder pressure plate 2. The end of the elastic pressure member 51 is fixedly connected to the middle of the flexible clamping block 50. The flexible clamping block 50 is slidably connected to the groove opened in the pressure plate of the cylinder pressure plate 2.

[0041] The elastic pressure component 51 further includes: a spring 511 and a sliding column 512. The lower end of the elastic pressure component 51 is fixedly connected to one end of the sliding column 512, and the other end of the sliding column 512 is fixedly connected to the middle of the flexible clamping block 50. The sliding column 512 is slidably connected to the pressure plate of the cylinder pressure plate 2, and the outer wall of the sliding column 512 is sleeved with the spring 511.

[0042] When the double-headed slider 41 moves the extrusion plate 52 toward the position of the elastic pressure member 51, because the end of the extrusion plate 52 is arc-shaped, when the arc-shaped end of the extrusion plate 52 abuts against the elastic pressure member 51, the end face of the elastic pressure member 51 facing the arc-shaped end of the extrusion plate 52 is inclined. Therefore, when the extrusion plate 52 abuts against the inclined face of the elastic pressure member 51, as the extrusion plate 52 moves, it will gradually press the elastic pressure member 51 toward the opening of the cylinder pressure plate 2, thereby causing the elastic pressure member 51 to press the sliding column 512, causing the sliding column 512 to slide under the restriction of the opening of the cylinder pressure plate 2. The compression of 1 will also compress the spring 511, and the flexible clamping block 50, which is fixedly connected to the end of the sliding column 512, will also move. Since the flexible clamping block 50 is slidably connected to the slot at the lower end face of the cylinder pressure plate 2, when the sliding column 512 moves against the flexible clamping block 50, the flexible clamping block 50 will move out from the slot at the cylinder pressure plate 2, thereby causing the flexible clamping block 50 to press against the groove on the surface of the hip joint forging. Since the contact point between the flexible clamping block 50 and the groove on the surface of the hip joint forging is flexible, the flexible clamping block 50 will produce corresponding deformation, thereby enabling the flexible clamping block 50 to press tightly against the groove on the surface of the hip joint forging.

[0043] By driving the flexible extrusion component 5 through the cleaning component 4, the flexible extrusion component 5 can press the groove on the surface of the hip joint forging after the surface of the hip joint forging has been cleaned, thus avoiding scratching the groove on the surface of the hip joint forging. Moreover, because the contact area between the flexible clamp 50 and the groove on the surface of the hip joint forging is made of flexible material, the flexible clamp 50 can also deform accordingly to press the groove on the surface of the hip joint forging, thus preventing the hip joint forging from shifting.

Claims

1. A numerical control edge milling automatic clamp, comprising a numerical control clamp (1) and a plurality of cylinder pressure plates (2), the upper part of the numerical control clamp (1) is fixedly connected with the plurality of cylinder pressure plates (2), characterized in that: The upper part of the cylinder pressing plate (2) is provided with an adjusting assembly (3) for adapting the rotating action of the cylinder pressing plate (2), the upper part of the adjusting assembly (3) is provided with a cleaning assembly (4) for cleaning impurities on the numerical control clamp (1), the upper part of the cylinder pressing plate (2) is provided with a flexible extrusion assembly (5) for pressing the fixed hip joint forging; The adjusting assembly (3) comprises: A sleeve piece (31), a hinged rod one (32), a driving rod (33), a fixing piece (34), and a connecting column (341), the sleeve piece (31) is sleeved and connected to the lifting rod of the cylinder pressing plate (2), the shaft of the outer wall of the sleeve piece (31) is rotationally connected to the lower part of the hinged rod one (32), the upper part of the hinged rod one (32) is rotationally connected to the upper pressing plate of the cylinder pressing plate (2), one end of the hinged rod one (32) is fixedly connected to the driving rod (33), the other end of the driving rod (33) is fixedly connected to the end of the connecting column (341), the rod body of the connecting column (341) is fixedly connected to the middle part of the fixing piece (34), and the end of the fixing piece (34) is fixedly connected to the cleaning assembly (4); The hinged rod one (32) further comprises a hinged rod two (321) and a fixed shaft (322), one end of the hinged rod one (32) is rotationally connected to the hinged rod two (321), the other end of the hinged rod two (321) is rotationally connected to the end of the fixed shaft (322), and the fixed shaft (322) is rotationally connected to the pressing plate of the cylinder pressing plate (2); The flexible extrusion assembly (5) comprises a flexible clamp block (50), an elastic pressure piece (51), and an extrusion plate (52), the end of the extrusion plate (52) is fixedly connected to the middle part of the cleaning assembly (4), the elastic pressure piece (51) is slidingly connected to the pressing plate of the cylinder pressing plate (2), the end of the elastic pressure piece (51) is fixedly connected to the middle part of the flexible clamp block (50), and the flexible clamp block (50) is slidingly connected to the groove of the pressing plate of the cylinder pressing plate (2); The elastic pressure piece (51) further comprises a spring (511) and a sliding column (512), the lower end of the elastic pressure piece (51) is fixedly connected to one end of the sliding column (512), the other end of the sliding column (512) is fixedly connected to the middle part of the flexible clamp block (50), the sliding column (512) is slidingly connected to the pressing plate of the cylinder pressing plate (2), and the outer wall of the sliding column (512) is sleeved with the spring (511).

2. The numerically controlled edge milling automatic fixture according to claim 1, characterized in that: The cleaning assembly (4) comprises: The top rod (40), double-end slider (41), steering piece (42), cleaning brush (43), guide block (44), the upper end surface of the double-end slider (41) is fixedly connected to the end of the fixed part (34), the groove in the middle of the double-end slider (41) is slidably connected to the guide block (44), the lower end surface of the guide block (44) is fixedly connected to the pressing plate of the air cylinder pressing plate (2), the side surface of the double-end slider (41) is provided with a straight groove (411), one end of the straight groove (411) is slidably connected to the top rod (40), the other end of the top rod (40) is fixedly connected to one end of the steering piece (42), the other end of the steering piece (42) is fixedly connected to the end of the cleaning brush (43).

3. The numerically controlled edge milling automatic clamp according to claim 2, characterized in that: The top rod (40) further comprises a connecting block (401) and a limiting part (402), one end of the top rod (40) is fixedly connected to the end of the steering piece (42), the other end of the top rod (40) is fixedly connected to one end of the connecting block (401), the other end of the connecting block (401) is fixedly connected to the middle part of the air cylinder pressing plate (2), and the middle part of the connecting block (401) is slidably connected to the straight groove (411).

4. The numerically controlled edge milling automatic clamp according to claim 3, characterized in that: The steering piece (42) further comprises a through column (421), the end of the steering piece (42) is fixedly connected to the end of the through column (421), the column body of the through column (421) penetrates and is fixedly connected to the end of the top rod (40), and the through column (421) penetrates and is rotatably connected to the pressing plate of the air cylinder pressing plate (2).

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