Double fork four-axis rotary hydraulic tooling and processing method

Abstract

The present application relates to a kind of duplex fork four-axis rotary hydraulic tooling and processing method, belong to workpiece processing tooling field.The present application includes tooling support, its structural features are in that: still include the support column for supporting duplex fork, for the compacting mechanism of duplex fork on support column, and when duplex fork is placed on support column, the inner calibration mechanism and outer calibration mechanism for the position calibration of duplex fork, the support column, compacting mechanism, inner calibration mechanism and outer calibration mechanism are all installed on tooling support, the compacting mechanism is cooperated with support column, inner calibration mechanism, outer calibration mechanism, support sliding slot is provided on the tooling support, the support column is installed on support sliding slot, the compacting mechanism includes compacting cylinder and compacting rod, the cylinder barrel of compacting cylinder is installed on tooling support, and the compacting rod is installed on the piston rod of compacting cylinder.

Description

Technical Field

[0001] This invention relates to a double-fork four-axis rotary hydraulic tooling and a machining method, belonging to the field of workpiece machining tooling. Background Technology

[0002] The double fork serves to connect the long and short forks in the universal joint drive shaft. Ear holes are machined on the double fork for mounting the universal joint. Due to the irregular shape of the double fork, it is difficult to position it during machining. In view of this, a drilling and boring tooling is disclosed in patent document with application number 202221000364.6. The above-mentioned prior art does not have a calibration mechanism, so position calibration cannot be achieved when placing the double fork.

[0003] The middle part of the double fork 6 is a central ring 61, and four ears 62 are provided on both sides of the central ring 61. When the double fork 6 is used, ear holes 63 need to be machined in the ears 62. The interior of the double fork 6 has an X-direction inner wall surface 64 and a Y-direction inner wall surface 65. The X-direction inner wall surface 64 and the Y-direction inner wall surface 65 are perpendicular to each other. Summary of the Invention

[0004] The purpose of this invention is to overcome the above-mentioned deficiencies in the prior art and to provide a reasonably designed double-fork four-axis rotary hydraulic tooling and processing method.

[0005] The technical solution adopted by the present invention to solve the above problems is as follows: the double-fork four-axis rotary hydraulic tooling includes a tooling bracket, and its structural features are as follows: it also includes a support column that supports the double fork, a clamping mechanism for pressing the double fork onto the support column, and an inner calibration mechanism and an outer calibration mechanism for calibrating the position of the double fork when it is placed on the support column. The support column, the clamping mechanism, the inner calibration mechanism and the outer calibration mechanism are all mounted on the tooling bracket, and the clamping mechanism cooperates with the support column, the inner calibration mechanism and the outer calibration mechanism. The internal calibration mechanism includes an internal calibration block, an internal calibration rod, an internal detection hole, an internal calibration seat, and an internal calibration spring. The internal detection hole is disposed on the internal calibration block, the internal calibration rod is mounted on the upper part of the internal calibration block, the internal calibration seat is mounted on the lower part of the internal calibration rod, the internal calibration seat is telescopically mounted on a tooling bracket, one end of the internal calibration spring abuts against the internal calibration seat, and the other end of the internal calibration spring abuts against the calibration bracket. The calibration bracket is mounted on the bottom of the tooling bracket. The external calibration mechanism includes an external calibration base, an external calibration spring, and an external calibration slot. The external calibration slot is disposed on the external calibration base. The external calibration base is telescopically disposed on the tooling bracket. One end of the external calibration spring abuts against the external calibration base, and the other end of the external calibration spring abuts against the calibration bracket. The calibration bracket is mounted on the bottom of the tooling bracket.

[0006] Furthermore, the tooling bracket is provided with a support groove, and the support column is installed on the support groove.

[0007] Furthermore, the clamping mechanism includes a clamping cylinder and a clamping rod, the cylinder barrel of the clamping cylinder is mounted on a tooling bracket, and the clamping rod is mounted on the piston rod of the clamping cylinder.

[0008] Furthermore, the inner calibration block is arranged in a T-shape.

[0009] Furthermore, the upper part of the inner calibration block is the head of the inner calibration block, the lower part of the inner calibration block is the body of the inner calibration block, the inner calibration rod is installed on the head of the inner calibration block, the inner calibration seat is installed on the body of the inner calibration block, and the inner detection hole is set on the inner calibration rod.

[0010] Furthermore, the inner calibration block head is provided with inner calibration inclined surfaces on both sides that cooperate with the inner wall of the double fork.

[0011] Furthermore, the external calibration slot is arranged in a V-shape.

[0012] Furthermore, the tooling bracket is connected to the rotary cylinder.

[0013] Furthermore, another technical objective of the present invention is to provide a double-fork four-axis rotary hydraulic tooling and a machining method.

[0014] The above-mentioned technical problem of the present invention is solved by the following technical solution.

[0015] A double-fork four-axis rotary hydraulic tooling and its machining method are characterized by the following machining method: In the initial state, the inner and outer calibration seats will pop out under the action of the inner and outer calibration springs respectively, placing the ear in the outer calibration slot. At the same time, the inner calibration block and inner calibration rod are placed in the middle ring. At this time, there will be a distance between the bottom surface of the middle ring and the support column. The clamping cylinder controls the rotation of the clamping rod, which in turn presses the middle ring against the support column, so that the top surface of the middle ring contacts the clamping rod and the bottom surface of the middle ring contacts the support column. During the descent of the clamping cylinder, the inner calibration inclined surfaces on both sides of the inner calibration block contact the inner wall surface in the X direction, which can calibrate the double fork in the X direction. The two ends of the inner calibration rod contact the inner wall surface in the Y direction, which can calibrate the double fork in the Y direction. In the ear processing, the ear hole is processed. After the ear hole is completed, the mandrel can be passed through the ear hole and the inner inspection hole to check the concentricity of the ear hole.

[0016] Furthermore, the position of the support column is adjusted according to the size of the intermediate ring.

[0017] Compared with the prior art, the present invention has the following advantages: an inner calibration inclined surface is provided on the side of the inner calibration block head, the inner calibration inclined surface is consistent with the inner draft angle of the double fork, and the inner calibration inclined surface is in contact with the inner wall surface in the X direction. The positioning of the double fork in the X direction can be achieved by the inner calibration block head, and the positioning of the double fork in the Y direction can also be achieved by the end of the inner calibration rod and the inner wall surface in the Y direction, thereby realizing the automatic centering of the double fork.

[0018] The two ears of the double fork are equipped with two V-shaped external calibration grooves for automatic centering and auxiliary positioning. The external calibration grooves are for auxiliary positioning and have external calibration springs underneath, which can move the double fork up and down. When the clamping cylinder is activated to clamp, the external calibration grooves are brought into contact with the sides of the ears, so as to achieve uniform automatic centering of the wall thickness on both sides of the ear hole. This enables the position calibration of the double fork and improves the product processing quality. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural schematic diagram of the double-fork four-axis rotary hydraulic tooling according to an embodiment of the present invention.

[0020] Figure 2 This is a three-dimensional structural schematic diagram of the double-fork four-axis rotary hydraulic tooling according to an embodiment of the present invention.

[0021] Figure 3 yes Figure 2 A magnified structural diagram of part A in the diagram.

[0022] Figure 4 This is a three-dimensional structural diagram of the double-forked structure according to an embodiment of the present invention.

[0023] Figure 5 This is a cross-sectional structural schematic diagram of the double-fork four-axis rotary hydraulic tooling according to an embodiment of the present invention.

[0024] Figure 6 This is a cross-sectional structural schematic diagram of the double-fork four-axis rotary hydraulic tooling according to an embodiment of the present invention.

[0025] In the diagram: 1. Tooling bracket; 2. Support column; 3. Clamping mechanism; 4. Internal calibration mechanism; 5. External calibration mechanism; 6. Double fork. Support slide 11, calibration bracket 12, rotary cylinder 13 Clamping cylinder 31, clamping rod 32 Inner calibration block 41, inner calibration rod 42, inner detection hole 43, inner calibration seat 44, inner calibration spring 45, inner calibration block head 46, inner calibration block body 47, inner calibration inclined surface 48. External calibration base 51, external calibration spring 52, external calibration slot 53 61. Intermediate ring, 62. Ear part, 63. Ear hole, 64. X-direction inner wall surface, 65. Y-direction inner wall surface. Detailed Implementation

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. The following embodiments are explanations of the present invention, but the present invention is not limited to the following embodiments.

[0027] Example.

[0028] See Figures 1 to 6 As shown in the accompanying drawings, the structures, proportions, sizes, etc., depicted are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness or purpose of the invention, should still fall within the scope of the disclosed technical content. Furthermore, the use of terms such as "upper," "lower," "left," "right," "middle," and "one" in this specification is merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0029] The double-fork four-axis rotary hydraulic fixture in this embodiment includes a fixture bracket 1, a support column 2 that supports the double fork 6, a clamping mechanism 3 for pressing the double fork 6 onto the support column 2, and an inner calibration mechanism 4 and an outer calibration mechanism 5 for calibrating the position of the double fork 6 when it is placed on the support column 2. The support column 2, the clamping mechanism 3, the inner calibration mechanism 4, and the outer calibration mechanism 5 are all mounted on the fixture bracket 1. The clamping mechanism 3 cooperates with the support column 2, the inner calibration mechanism 4, and the outer calibration mechanism 5. The fixture bracket 1 is connected to the rotary cylinder 13.

[0030] In this embodiment, the tooling bracket 1 is provided with a support slide groove 11, the support column 2 is installed on the support slide groove 11, and the clamping mechanism 3 includes a clamping cylinder 31 and a clamping rod 32. The cylinder barrel of the clamping cylinder 31 is installed on the tooling bracket 1, and the clamping rod 32 is installed on the piston rod of the clamping cylinder 31.

[0031] The internal calibration mechanism 4 in this embodiment includes an internal calibration block 41, an internal calibration rod 42, an internal detection hole 43, an internal calibration seat 44, and an internal calibration spring 45. The internal detection hole 43 is disposed on the internal calibration block 41. The internal calibration rod 42 is installed on the upper part of the internal calibration block 41. The internal calibration seat 44 is installed on the lower part of the internal calibration rod 42. The internal calibration seat 44 is telescopically disposed on the tooling bracket 1. One end of the internal calibration spring 45 abuts against the internal calibration seat 44, and the other end of the internal calibration spring 45 abuts against the calibration bracket 12. The calibration bracket 12 is installed at the bottom of the tooling bracket 1.

[0032] In this embodiment, the inner calibration block 41 is arranged in a T-shape. The upper part of the inner calibration block 41 is the inner calibration block head 46, and the lower part of the inner calibration block 41 is the inner calibration block body 47. The inner calibration rod 42 is installed on the inner calibration block head 46, the inner calibration seat 44 is installed on the inner calibration block body 47, the inner detection hole 43 is provided on the inner calibration rod 42, and the inner calibration inclined surface 48 that cooperates with the inner wall of the double fork 6 is provided on both sides of the inner calibration block head 46.

[0033] The external calibration mechanism 5 in this embodiment includes an external calibration seat 51, an external calibration spring 52, and an external calibration groove 53. The external calibration groove 53 is disposed on the external calibration seat 51. The external calibration seat 51 is telescopically disposed on the tooling bracket 1. One end of the external calibration spring 52 abuts against the external calibration seat 51, and the other end of the external calibration spring 52 abuts against the calibration bracket 12. The calibration bracket 12 is mounted on the bottom of the tooling bracket 1, and the external calibration groove 53 is arranged in a V-shape.

[0034] The double-fork four-axis rotary hydraulic tooling and processing method in this embodiment are as follows: the position of the support column 2 is adjusted according to the size of the intermediate ring 61.

[0035] In the initial state, the inner calibration seat 44 and the outer calibration seat 51 will pop out under the action of the inner calibration spring 45 and the outer calibration spring 52 respectively, placing the ear 62 in the outer calibration slot 53. At the same time, the inner calibration block 41 and the inner calibration rod 42 are placed in the middle ring 61. At this time, there will be a distance between the bottom surface of the middle ring 61 and the support column 2.

[0036] The clamping cylinder 31 controls the rotation of the clamping rod 32, and the clamping rod 32 presses the intermediate ring 61 onto the support column 2, so that the top surface of the intermediate ring 61 contacts the clamping rod 32 and the bottom surface of the intermediate ring 61 contacts the support column 2. During the descent of the clamping cylinder 31, the inner calibration inclined surface 48 set on both sides of the inner calibration block 41 contacts the inner wall surface 64 in the X direction, so that the double fork 6 can be calibrated in the X direction. The two ends of the inner calibration rod 42 set on both sides contact the inner wall surface 65 in the Y direction, so that the double fork 6 can be calibrated in the Y direction.

[0037] Ear hole 63 is processed in ear part 62. After the ear hole 63 is processed, the mandrel can be passed through the ear hole 63 and the inner detection hole 43 to detect the concentricity of the ear hole 63.

[0038] It should be noted that "four-axis" refers to the fourth axis in the machine tool, in addition to the X, Y, and Z axes. That is, the tooling bracket 1 is driven by the rotary cylinder 13 to rotate along the fourth axis from 0° to 360°. When the rotary cylinder 13 drives the tooling bracket 1 to rotate 90°, the ear 62 on one side can be processed. When the rotary cylinder 13 drives the tooling bracket 1 to rotate 270°, the ear 62 on the other side can be processed.

[0039] Specifically, three support columns 2 are used to position the center height of the double fork 6. One support column 2 is arranged on one side and two support columns 2 are arranged on the other side. For double forks 6 of different series and sizes, the positions of the support columns 2 can be adjusted according to the diameter of the middle ring 61 to achieve the change of shape. The purpose of selecting the three support columns 2 is to consider the over-positioning of the product.

[0040] The two ears 62 of the double fork 6 are automatically centered and assisted in positioning by two V-shaped external calibration grooves 53. The external calibration grooves 53 are for auxiliary positioning and have external calibration springs 52 underneath, which can move the double fork 6 up and down. When the clamping cylinder 31 is activated to clamp, the external calibration grooves 53 are made to contact the sides of the ears 62, so as to achieve uniform automatic centering of the wall thickness on both sides of the ear hole 63.

[0041] An inner calibration inclined surface 48 is provided on the side of the inner calibration block head 46. The inner calibration inclined surface 48 is consistent with the inner draft angle of the double fork 6. The inner calibration inclined surface 48 contacts the X-direction inner wall surface 64. The double fork 6 can be positioned in the X direction by the inner calibration block head 46. The double fork 6 can also be positioned in the Y direction by the end of the inner calibration rod 42 and the Y-direction inner wall surface 65, thereby realizing the automatic centering of the double fork 6.

[0042] A hydraulic rotary cylinder, also known as a clamping cylinder 31, is used to automatically clamp the double fork 6 onto the support column 2. In the machine tool control program, the action of the clamping cylinder 31 is set with M code. The action of the clamping cylinder 31 can be accurately realized in the programming. For example, when the clamping cylinder 31 is clamping, it can simultaneously release for half a second and then perform the clamping action, so that the double fork 6 can more accurately realize the relevant auxiliary positioning functions and ensure that the double fork is clamped in place.

[0043] This double-fork four-axis rotary hydraulic tooling can clamp two double-fork pieces at once, completing all dimensions of the double-fork machining in one go, ensuring product quality.

[0044] Process description: Establish a program coordinate system. Based on the processing characteristics and functional requirements of the product, a total of 4 coordinate systems are established. Coordinate systems P1 and P2 are established in the 90-degree direction of the four axes, respectively, with the center points of the two double forks. Similarly, two coordinate systems P3 and P4 are established in the 270-degree direction of the four axes, with the center points of the double forks.

[0045] 1. Using a U-shaped drill, drill at P1 and P2 respectively (with... Figure 1 Based on this, the tooling bracket 1 is driven to rotate by the rotary cylinder 13. When P1 and P2 are at the top, two ear holes 63 are drilled in each coordinate system. Then the tooling bracket 1 rotates 180 degrees, and two ear holes 63 are drilled in P3 and P4 (with the coordinate system as follows). Figure 1 Based on this, the tooling bracket 1 is driven to rotate by the rotary cylinder 13. When P3 and P4 are above, two ear holes 63 are drilled in each coordinate system.

[0046] 2. Using a composite tool, rough boring the ear hole 63 and the countersunk hole positioning surface in the P3, P4 coordinate system. Then, the tooling bracket 1 is rotated 180 degrees and rough boring the ear hole 63 and the countersunk hole positioning surface in the P1, P2 coordinate system.

[0047] 3. Use a three-blade cutting tool to cut the circlip groove in coordinate system P1, P2. Then, rotate tool bracket 1 180 degrees and cut the circlip groove in coordinate system P3, P4.

[0048] 4. Use a precision boring tool to precisely bore the ear hole.

[0049] 5. Use a 30-degree chamfering tool to chamfer.

[0050] The core control point after processing is the concentricity of the ear hole 63, which is tested using a special coaxiality mandrel.

[0051] Furthermore, it should be noted that the specific embodiments described in this specification may differ in the shape and name of their components, etc. The above description is merely illustrative of the structure of the present invention. All equivalent or simple variations made based on the structure, features, and principles described in this patent concept are included within the protection scope of this patent. Those skilled in the art can make various modifications or additions to the described specific embodiments or use similar methods to substitute them, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, all of which should fall within the protection scope of this invention.

Claims

1. A double-fork four-axis rotary hydraulic tooling, comprising a tooling bracket (1), characterized in that: It also includes a support column (2) that supports the double fork (6), a clamping mechanism (3) for pressing the double fork (6) onto the support column (2), and an inner calibration mechanism (4) and an outer calibration mechanism (5) for calibrating the position of the double fork (6) when it is placed on the support column (2). The support column (2), the clamping mechanism (3), the inner calibration mechanism (4) and the outer calibration mechanism (5) are all mounted on the tooling bracket (1). The clamping mechanism (3) cooperates with the support column (2), the inner calibration mechanism (4) and the outer calibration mechanism (5). The internal calibration mechanism (4) includes an internal calibration block (41), an internal calibration rod (42), an internal detection hole (43), an internal calibration seat (44), and an internal calibration spring (45). The internal detection hole (43) is disposed on the internal calibration block (41). The internal calibration rod (42) is installed on the upper part of the internal calibration block (41). The internal calibration seat (44) is installed on the lower part of the internal calibration rod (42). The internal calibration seat (44) is telescopically disposed on the tooling bracket (1). One end of the internal calibration spring (45) abuts against the internal calibration seat (44), and the other end of the internal calibration spring (45) abuts against the calibration bracket (12). The calibration bracket (12) is installed at the bottom of the tooling bracket (1). The external calibration mechanism (5) includes an external calibration seat (51), an external calibration spring (52), and an external calibration slot (53). The external calibration slot (53) is disposed on the external calibration seat (51). The external calibration seat (51) is telescopically disposed on the tooling bracket (1). One end of the external calibration spring (52) abuts against the external calibration seat (51), and the other end of the external calibration spring (52) abuts against the calibration bracket (12). The calibration bracket (12) is mounted on the bottom of the tooling bracket (1).

2. The double-fork four-axis rotary hydraulic tooling according to claim 1, characterized in that: The tooling bracket (1) is provided with a support groove (11), and the support column (2) is installed on the support groove (11).

3. The double-fork four-axis rotary hydraulic tooling according to claim 1, characterized in that: The clamping mechanism (3) includes a clamping cylinder (31) and a clamping rod (32). The cylinder barrel of the clamping cylinder (31) is mounted on the tooling bracket (1), and the clamping rod (32) is mounted on the piston rod of the clamping cylinder (31).

4. The double-fork four-axis rotary hydraulic tooling according to claim 1, characterized in that: The inner calibration block (41) is arranged in a T-shape.

5. The double-fork four-axis rotary hydraulic tooling according to claim 1, characterized in that: The upper part of the inner calibration block (41) is the inner calibration block head (46), the lower part of the inner calibration block (41) is the inner calibration block body (47), the inner calibration rod (42) is installed on the inner calibration block head (46), the inner calibration seat (44) is installed on the inner calibration block body (47), and the inner detection hole (43) is set on the inner calibration rod (42).

6. The double-fork four-axis rotary hydraulic tooling according to claim 5, characterized in that: The inner calibration block head (46) has inner calibration inclined surfaces (48) on both sides that cooperate with the inner wall of the double fork (6).

7. The double-fork four-axis rotary hydraulic tooling according to claim 1, characterized in that: The external calibration slot (53) is arranged in a V-shape.

8. The double-fork four-axis rotary hydraulic tooling according to claim 1, characterized in that: The tooling bracket (1) is connected to the rotary cylinder (13).

9. A method for machining the double-fork four-axis rotary hydraulic tooling as described in any one of claims 1-8, characterized in that: The processing method is as follows. In the initial state, the inner calibration seat (44) and the outer calibration seat (51) will pop out under the action of the inner calibration spring (45) and the outer calibration spring (52) respectively, placing the ear (62) in the outer calibration slot (53). At the same time, the inner calibration block (41) and the inner calibration rod (42) are placed in the middle ring (61). At this time, there will be a distance between the bottom surface of the middle ring (61) and the support column (2). The clamping cylinder (31) controls the rotation of the clamping rod (32), and the clamping rod (32) presses the middle ring (61) onto the support column (2), so that the top surface of the middle ring (61) contacts the clamping rod (32) and the bottom surface of the middle ring (61) contacts the support column (2). During the descent, the clamping cylinder (31) contacts the X-direction inner wall surface (64) through the inner calibration inclined surface (48) set on both sides of the inner calibration block (41), which can calibrate the double fork (6) in the X-direction. The double fork (6) is calibrated in the Y-direction through the contact of the two ends of the inner calibration rod (42) with the Y-direction inner wall surface (65). Ear holes (63) are processed in the ear (62). After the ear holes (63) are processed, the mandrel can be passed through the ear holes (63) and the inner detection hole (43) to detect the concentricity of the ear holes (63).

10. The machining method of the double-fork four-axis rotary hydraulic tooling according to claim 9, characterized in that: The position of the support column (2) is adjusted according to the size of the intermediate ring (61).

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