Double-linkage-fork four-shaft rotation hydraulic tool and machining method

Abstract

The invention relates to a double-linkage-fork four-shaft rotation hydraulic tool and a machining method, and belongs to the field of workpiece machining tools. The device comprises a tool support and is structurally characterized by further comprising a supporting column for supporting the duplex fork, a pressing mechanism for pressing the duplex fork on the supporting column, an inner calibration mechanism and an outer calibration mechanism, wherein the inner calibration mechanism and the outer calibration mechanism have a position calibration effect on the duplex fork when the duplex fork is placed on the supporting column; the supporting column, the pressing mechanism, the inner calibration mechanism and the outer calibration mechanism are all installed on the tool support, the pressing mechanism is matched with the supporting column, the inner calibration mechanism and the outer calibration mechanism, a supporting sliding groove is formed in the tool support, the supporting column is installed on the supporting sliding groove, the pressing mechanism comprises a pressing oil cylinder and a pressing rod, and the pressing oil cylinder is matched with the pressing rod. A cylinder barrel of the pressing oil cylinder is installed on the tool support, and the pressing rod is installed on a piston rod of the pressing oil cylinder.

Description

Technical Field

[0001] The invention relates to a double-fork four-axis rotary hydraulic tool and a processing method thereof, belonging to the field of workpiece processing tool. Background Art

[0002] The double fork connects the long-axis fork and the short-axis fork in the universal joint drive shaft. Ear holes are processed on the double fork for installing the universal shaft. Due to the irregular shape of the double fork, it is difficult to position it during processing. In view of this, a drilling and boring internal hole processing tool is disclosed in the patent document with application number 202221000364.6. No calibration mechanism is provided in the above-mentioned prior art, so position calibration cannot be achieved when placing the double fork.

[0003] The middle part of the double fork 6 is an intermediate ring 61, and four ears 62 are arranged on both sides of the intermediate ring 61. When the double fork 6 is in use, ear holes 63 need to be processed on the ears 62. The interior of the double fork 6 is 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 the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a double-fork four-axis rotary hydraulic tooling with a reasonable structural design and a processing method.

[0005] The technical solution adopted by the present invention to solve the above-mentioned problem is: the double-fork four-axis rotary hydraulic tooling includes a tooling bracket, and its structural characteristics are: it also includes a support column that supports the double-fork, a clamping mechanism for clamping the double-fork on the support column, and an internal calibration mechanism and an external calibration mechanism that calibrate the position of the double-fork when the double-fork is placed on the support column, the support column, the clamping mechanism, the internal calibration mechanism and the external calibration mechanism are all installed on the tooling bracket, and the clamping mechanism cooperates with the support column, the internal calibration mechanism and the external calibration mechanism; The inner calibration mechanism comprises an inner calibration block, an inner calibration rod, an inner detection hole, an inner calibration seat and an inner calibration spring, wherein the inner detection hole is arranged on the inner calibration block, the inner calibration rod is installed on the upper part of the inner calibration block, the inner calibration seat is installed on the lower part of the inner calibration rod, the inner calibration seat is telescopically arranged on the tooling bracket, one end of the inner calibration spring abuts against the inner calibration seat, the other end of the inner calibration spring abuts against the calibration bracket, and the calibration bracket is installed at the bottom of the tooling bracket; The external calibration mechanism includes an external calibration seat, an external calibration spring and an external calibration groove. The external calibration groove is arranged on the external calibration seat. The external calibration seat is telescopically arranged on the tooling bracket. One end of the external calibration spring abuts against the external calibration seat, and the other end of the external calibration spring abuts against the calibration bracket. The calibration bracket is installed on the bottom of the tooling bracket.

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

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

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

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

[0010] Furthermore, inner calibration inclined surfaces cooperating with the inner walls of the double forks are provided on both sides of the head of the inner calibration block.

[0011] Furthermore, the outer calibration groove is arranged in a V-shaped structure.

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

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

[0014] The above technical problem of the present invention is achieved through the following technical solutions.

[0015] A double-fork four-axis rotary hydraulic tooling and processing method, which is characterized in that: the processing method is as follows: In the initial state, the inner calibration seat and the outer calibration seat will pop out under the action of the inner calibration spring and the outer calibration spring respectively, and the ear will be placed in the outer calibration groove. At the same time, the inner calibration block and the 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 rod is controlled to rotate by the clamping cylinder, and the intermediate ring is clamped on the support column by the clamping rod, so that the top surface of the intermediate ring contacts the clamping rod, and the bottom surface of the intermediate ring contacts the support column. During the descending process, the clamping cylinder contacts the inner wall surface in the X direction through the inner calibration inclined surfaces arranged on both sides of the inner calibration block, so that the position of the double fork in the X direction can be calibrated. The position of the double fork in the Y direction can be calibrated by contacting the inner wall surface in the Y direction at both ends of the inner calibration rod. The ear hole is processed in the ear part. After the ear hole processing is completed, the core rod can be passed through the ear hole and the inner detection hole to detect the concentricity of the ear hole.

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

[0017] Compared with the prior art, the present invention has the following advantages: an inner calibration inclined surface is arranged 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, the inner calibration inclined surface is in contact with the inner wall surface in the X direction, the double fork can be positioned in the X direction by the inner calibration block head, and the double fork can be positioned in the Y direction by the end of the inner calibration rod and the inner wall surface in the Y direction, thereby realizing automatic centering of the double fork.

[0018] The ears on both sides of the double fork adopt two external calibration grooves in a V-shaped structure for automatic centering and auxiliary positioning; the external calibration groove is for auxiliary positioning, and the external calibration spring underneath can make the double fork move up and down. When the clamping cylinder is activated to clamp, the external calibration groove is in contact with the side of the ear to achieve uniform automatic centering of the wall thickness on both sides of the ear hole, thereby realizing the position calibration of the double fork to improve the product processing quality. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

[0021] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A in FIG.

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of a double fork according to an embodiment of the present invention.

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

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

[0025] In the figure: tooling bracket 1, support column 2, clamping mechanism 3, internal calibration mechanism 4, external calibration mechanism 5, double fork 6, 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 seat 51, external calibration spring 52, external calibration groove 53, The intermediate ring 61 , the ear portion 62 , the ear hole 63 , the X-direction inner wall surface 64 , and the Y-direction inner wall surface 65 . DETAILED DESCRIPTION

[0026] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

[0027] Example

[0028] See also Figures 1 to 6 As shown, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention, so they have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed by the present invention without affecting the effects and purposes that can be achieved by the present invention. At the same time, if there are references to terms such as "upper", "lower", "left", "right", "middle" and "one" in this specification, they are only for the convenience of description, and are not used to limit the scope of the implementation of the present invention. The change or adjustment of their relative relationship should also be regarded as the scope of the implementation of the present invention without substantially changing the technical content.

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

[0030] The tooling bracket 1 in this embodiment is provided with a supporting groove 11, the supporting column 2 is installed on the supporting groove 11, 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 arranged on the internal calibration block 41, the internal calibration rod 42 is installed on the upper part of the internal calibration block 41, and the internal calibration seat 44 is installed on the lower part of the internal calibration rod 42. The internal calibration seat 44 is telescopically arranged 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, and the calibration bracket 12 is installed at the bottom of the tooling bracket 1.

[0032] The internal calibration block 41 in this embodiment is arranged in a T-shaped structure, the upper part of the internal calibration block 41 is the internal calibration block head 46, the lower part of the internal calibration block 41 is the internal calibration block body 47, the internal calibration rod 42 is installed on the internal calibration block head 46, the internal calibration seat 44 is installed on the internal calibration block body 47, the internal detection hole 43 is arranged on the internal calibration rod 42, and the two sides of the internal calibration block head 46 are provided with internal calibration inclined surfaces 48 that cooperate with the inner wall of the double fork 6.

[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 arranged on the external calibration seat 51. The external calibration seat 51 is telescopically arranged 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 installed on the bottom of the tooling bracket 1, and the external calibration groove 53 is arranged in a V-shaped structure.

[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 groove 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 rod 32 is controlled to rotate by the clamping cylinder 31, and the intermediate ring 61 is clamped onto the support column 2 by the clamping rod 32, 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 descending process, the clamping cylinder 31 contacts the X-direction inner wall surface 64 through the inner calibration inclined surfaces 48 arranged on both sides of the inner calibration block 41, so as to calibrate the position of the double fork 6 in the X-direction. The two ends of the inner calibration rod 42 contact the Y-direction inner wall surface 65, so as to calibrate the position of the double fork 6 in the Y-direction.

[0037] An ear hole 63 is processed on the ear portion 62 . After the ear hole 63 is processed, a core rod 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 addition to the X, Y, and Z axes of the machine tool when the tool is installed. That is to say, the tool bracket 1 is driven by the rotary cylinder 13 to rotate along the fourth axis at 0°-360°. When the rotary cylinder 13 drives the tool bracket 1 to rotate 90°, the ear 62 on one side can be processed. When the rotary cylinder 13 drives the tool 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, with one support column 2 arranged on one side and two support columns 2 arranged on the other side. Double forks 6 of different series and sizes can be changed by adjusting different positions of the support columns 2 according to the diameter of the middle ring 61. The purpose of selecting the three-point support column 2 is to consider the over-positioning of the product.

[0040] The ears 62 on both sides of the double fork 6 adopt two external calibration grooves 53 arranged in a V-shaped structure to automatically center and assist in positioning; the external calibration groove 53 is for auxiliary positioning, and the external calibration spring 52 at the bottom can make the double fork 6 move up and down. When the clamping cylinder 31 is activated to clamp, the external calibration groove 53 is in contact with the side of the ear 62 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 surface 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 provided. The double fork 6 can also be positioned in the Y direction by the end of the inner calibration rod 42 provided and the Y-direction inner wall surface 65, thereby realizing automatic centering of the double fork 6.

[0042] A hydraulic rotary cylinder, namely the clamping cylinder 31, is used to automatically clamp the double fork 6 on the support column 2. In the machine tool control program, the action of the clamping cylinder 31 is set with an M code, and the action of the clamping cylinder 31 can be accurately realized in programming. For example, when the clamping cylinder 31 is in a clamping action, it is simultaneously released for half a second and then the clamping action is executed, so that the double fork 6 can more accurately realize the related auxiliary positioning function and ensure that the double fork is clamped in place.

[0043] The double-fork four-axis rotary hydraulic tooling can clamp two double-forks 6 at a time and complete all dimensions of double-fork processing at one time to ensure product quality.

[0044] Process description: Establish a program coordinate system. According to the processing characteristics and functional characteristics of the product, a total of 4 coordinate systems are established. Coordinate systems P1 and P2 are established at the center points of the two double forks in the 90-degree direction of the four-axis, and two coordinate systems P3 and P4 are established at the center of the double forks in the 270-degree direction of the four-axis.

[0045] 1. Use U drill to drill P1 and P2 (with Figure 1 Based on, the tooling support 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 the coordinate system. Then the tooling support 1 is rotated 180 degrees and the tooling support 1 is rotated 180 degrees. Figure 1 Based on the above, the tooling bracket 1 is driven to rotate by the rotary cylinder 13, and two ear holes 63 are drilled in the coordinate system when P3 and P4 are at the top.

[0046] 2. Use a composite tool to rough bore the ear hole 63 and countersink the positioning surface in the P3, P4 coordinate system, then rotate the tooling bracket 1 180 degrees, and rough bore the ear hole 63 and countersink the positioning surface in the P1, P2 coordinate system.

[0047] 3. Use a three-blade cutting slot to cut the retaining ring slot in the P1, P2 coordinate system, then rotate the fixture bracket 1 180 degrees and cut the retaining ring slot in the P3, P4 coordinate system.

[0048] 4. Use a fine boring tool to fine bore the ear holes.

[0049] 5. Use a 30-degree chamfering knife for chamfering.

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

[0051] In addition, it should be noted that the shapes and names of the parts and components of the specific embodiments described in this specification may be different, and the above content described in this specification is only an example of the structure of the present invention. All equivalent changes or simple changes made based on the structure, features and principles described in the patent concept of the present invention are included in the protection scope of the patent of the present invention. Technicians in the technical field of the present invention can make various modifications or supplements to the specific embodiments described or replace them in a similar manner, as long as they do not deviate from the structure of the present invention or exceed the scope defined by the claims, they should all fall within the protection scope of the present 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 pressing mechanism (3) for pressing the double fork (6) onto the support column (2), and an internal calibration mechanism (4) and an external calibration mechanism (5) that calibrate the position of the double fork (6) when the double fork (6) is placed on the support column (2). The support column (2), the pressing mechanism (3), the internal calibration mechanism (4) and the external calibration mechanism (5) are all mounted on the tooling bracket (1), and the pressing mechanism (3) cooperates with the support column (2), the internal calibration mechanism (4) and the external calibration mechanism (5); The inner calibration mechanism (4) comprises an inner calibration block (41), an inner calibration rod (42), an inner detection hole (43), an inner calibration seat (44) and an inner calibration spring (45); the inner detection hole (43) is arranged on the inner calibration block (41); the inner calibration rod (42) is mounted on the upper part of the inner calibration block (41); the inner calibration seat (44) is mounted on the lower part of the inner calibration rod (42); the inner calibration seat (44) is telescopically arranged on the tooling bracket (1); one end of the inner calibration spring (45) abuts against the inner calibration seat (44); the other end of the inner calibration spring (45) abuts against the calibration bracket (12); and the calibration bracket (12) is mounted on the bottom of the tooling bracket (1); The external calibration mechanism (5) comprises an external calibration seat (51), an external calibration spring (52) and an external calibration groove (53); the external calibration groove (53) is arranged on the external calibration seat (51); the external calibration seat (51) is telescopically arranged on the tooling bracket (1); one end of the external calibration spring (52) abuts against the external calibration seat (51); the other end of the external calibration spring (52) abuts against the calibration bracket (12); and 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 is characterized in that: The tooling bracket (1) is provided with a support slide groove (11), and the support column (2) is mounted on the support slide groove (11).

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

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

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

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

7. The double-fork four-axis rotary hydraulic tooling according to claim 8 is characterized in that: The outer calibration groove (53) is arranged in a V-shaped structure.

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

9. A double-fork four-axis rotary hydraulic tooling and processing method according to any one of claims 1 to 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, and the ear (62) will be placed in the outer calibration groove (53), and the inner calibration block (41) and the inner calibration rod (42) will be 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 rod (32) is controlled to rotate by the clamping oil cylinder (31), and the intermediate ring (61) is pressed against the support column (2) by the clamping rod (32), 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 descending process of the clamping oil cylinder (31), the inner calibration inclined surfaces (48) arranged on both sides of the inner calibration block (41) contact the X-direction inner wall surface (64), so that the position of the double fork (6) in the X direction can be calibrated. The two ends of the inner calibration rod (42) contact the Y-direction inner wall surface (65), so that the position of the double fork (6) in the Y direction can be calibrated. An ear hole (63) is processed in the ear portion (62). After the ear hole (63) is processed, a core rod can be passed through the ear hole (63) and the inner detection hole (43) to detect the concentricity of the ear hole (63).

10. The double-fork four-axis rotary hydraulic tooling and processing method 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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