Shaft fork four-shaft rotation hydraulic tool and machining method

Abstract

The invention relates to a shaft fork four-shaft rotation hydraulic tool and a machining method, and belongs to the field of workpiece machining tools. The tool comprises a tool support and is structurally characterized by further comprising a clamping mechanism and a correcting mechanism which are installed on the tool support, the correcting mechanism comprises a correcting seat, a pushing seat, a floating seat, a floating block, a correcting block and a correcting spring, the correcting seat is fixed to the tool support, the pushing seat is installed on the correcting seat in a sliding mode, and the floating seat is fixed to the tool support. The floating seat is fixed on the pushing seat, the floating block is installed on the floating seat in a sliding mode, the correction block is fixed on the floating block, the correction spring is installed in the floating seat, and the two ends of the correction spring abut against the pushing seat and the floating block respectively.

Description

Technical Field

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

[0002] A double-jointed universal joint transmission shaft usually comprises a long shaft fork, a short shaft fork and a double fork. The two ends of the double fork are connected to the long shaft fork and the short shaft fork through a universal shaft. The long shaft fork and the short shaft fork are collectively referred to as shaft fork 5. The shaft fork 5 comprises a shaft body 51, a fork body 52, an ear hole 53 and a shoulder 54. The fork body 52 is arranged at one end of the shaft body 51, the shoulder 54 is arranged at the connection between the fork body 52 and the shaft body 51, and the ear hole 53 is arranged on the fork body 52 for installing the universal shaft; in view of this, a processing device for ear holes of a transmission shaft spline shaft fork is disclosed in the patent document with application number 201621081641.5. When the ear holes are processed by the above processing device, the blank positioning at the ear hole position may be inaccurate, resulting in inconsistent processing positions of the ear holes, which affects product quality. Summary of the invention

[0003] The purpose of the present invention is to overcome the above-mentioned deficiencies in the prior art and to provide a shaft fork four-axis rotary hydraulic tooling and a processing method thereof with a rational structural design.

[0004] The technical solution adopted by the present invention to solve the above-mentioned problem is: the axle fork four-axis rotary hydraulic tooling includes a tooling bracket, and its structural characteristics are: it also includes a clamping mechanism and a correction mechanism installed on the tooling bracket, the correction mechanism includes a correction seat, a push seat, a floating seat, a floating block, a correction block, a correction spring, a push cylinder, a push rocker, a rocker shaft and a push rocker slot, the correction seat is fixed on the tooling bracket, the push seat is slidably installed on the correction seat, the floating seat is fixed on the push seat, and the floating block is slidably installed On the floating seat, the correction block is fixed on the floating block, the correction spring is installed in the floating seat, and the two ends of the correction spring are respectively abutted against the push seat and the floating block, the correction mechanism also includes, the cylinder barrel of the push cylinder is installed on the tooling bracket, the piston rod of the push cylinder is connected to one end of the push rocker arm, the other end of the push rocker arm is located in the push rocker groove, the push rocker groove is arranged on the push seat, the push rocker arm is installed on the tooling bracket through the rocker arm rotating shaft, and a V-groove correction groove is arranged on the correction block.

[0005] Furthermore, the clamping mechanism includes a lower clamping seat, an upper clamping seat, a lower clamping block and an upper clamping block, the lower clamping seat is fixed on the tooling bracket, one end of the upper clamping seat is rotatably connected to the lower clamping seat, the other end of the upper clamping seat is locked with the lower clamping seat through a locking mechanism, and the lower clamping block and the upper clamping block are respectively installed on the lower clamping seat and the upper clamping seat.

[0006] Furthermore, the locking mechanism includes a locking rod, a locking seat, a locking block and a locking cylinder, the cylinder barrel of the locking cylinder is fixed on the tooling bracket, the piston rod of the locking cylinder is connected to the locking block, the locking block is connected to the locking rod, the locking rod is connected to the locking seat, and the locking seat is fixed on the cylinder barrel of the locking cylinder.

[0007] Furthermore, a lever is installed at the other end of the upper clamping seat.

[0008] Furthermore, both the lower clamping block and the upper clamping block are provided with positioning bosses.

[0009] Furthermore, it also includes a lifting mechanism, which cooperates with the clamping mechanism and the correction mechanism. The lifting mechanism includes a lifting frame, a lifting seat, a lifting rod, a lifting block and a lifting roller. The lifting seat is fixed on the lifting frame, one end of the lifting rod is installed on the lifting seat, the lifting block is installed on the other end of the lifting rod, and the lifting roller is installed on the lifting block.

[0010] Furthermore, the tooling bracket is connected to a rotary cylinder.

[0011] Furthermore, the axle fork is a long axle fork or a short axle fork.

[0012] Furthermore, another technical purpose of the present invention is to provide a processing method for a four-axis rotary hydraulic tooling of a shaft fork.

[0013] The above technical objectives of the present invention are achieved through the following technical solutions.

[0014] A processing method for a shaft fork four-axis rotary hydraulic tooling, which is characterized in that: the processing method is as follows: In the initial state, the correction block is at the frontmost position, and the shaft fork is placed on the lower clamping block so that the positioning boss on the lower clamping block contacts the shaft body, and the fork body is embedded in the V-groove correction groove; When the fork body is embedded in the V-groove correction groove, the correction spring can be set to adjust the floating block and the correction block on the floating seat according to the height of the fork body to achieve the position calibration of the shaft fork; The upper clamping seat is buckled with the lower clamping seat, and the push rocker arm is controlled to swing by the push cylinder. The push rocker arm is used to push the push seat to the final position, so that the shoulder is stuck at the ends of the lower clamping block and the upper clamping block, and the locking block is controlled by the locking cylinder to lock the upper clamping seat and the lower clamping seat to fix the position of the shaft fork, thereby realizing the processing of the ear hole on the shaft fork.

[0015] Furthermore, whether to place a lifting mechanism is determined according to the length of the axle fork. If a lifting mechanism needs to be placed, the lifting rod can be rotated to adjust the height of the lifting roller, and the corresponding lower clamping block, upper clamping block, and correction block can be selected according to the specifications of the axle fork.

[0016] Compared with the prior art, the present invention has the following advantages: the four-axis rotary hydraulic tooling of the axle fork plays an auxiliary positioning role through the V-groove correction groove arranged on the correction block. The main purpose is to adjust the blanks at the ear holes on both sides of the fork body, and rely on the pushing of the push cylinder to prevent the fork body blank from being over-positioned. The correction block is fixed to the floating block, and the floating block can float up and down through the correction spring, thereby ensuring the accurate positioning of the fork body to facilitate the processing of the ear holes on the fork body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional structure diagram of the axle fork four-axis rotary hydraulic tooling according to an embodiment of the present invention.

[0018] Figure 2 yes Figure 1 Schematic diagram of the enlarged structure of part A in FIG.

[0019] Figure 3 It is a schematic cross-sectional structure diagram of the axle fork four-axis rotary hydraulic tooling according to an embodiment of the present invention.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the axle fork four-axis rotary hydraulic tooling according to an embodiment of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional structure of the axle fork four-axis rotary hydraulic tooling according to an embodiment of the present invention.

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the axle fork four-axis rotary hydraulic tooling according to an embodiment of the present invention.

[0023] Figure 7 It is a schematic diagram of the structure of the long-axis fork four-axis rotary hydraulic tooling in use state according to an embodiment of the present invention.

[0024] Figure 8 It is a schematic diagram of the three-dimensional structure of the long-axis fork according to an embodiment of the present invention.

[0025] Fig. 9 It is a schematic diagram of the structure of the short-axle fork four-axis rotary hydraulic tooling in use state according to an embodiment of the present invention.

[0026] Fig.10 It is a schematic diagram of the three-dimensional structure of the short-axis fork according to an embodiment of the present invention.

[0027] In the figure: tooling bracket 1, clamping mechanism 2, correction mechanism 3, lifting mechanism 4, shaft fork 5, Rotary cylinder 11, Lower clamping seat 21, upper clamping seat 22, lower clamping block 23, upper clamping block 24, locking rod 25, locking seat 26, locking block 27, locking cylinder 28, positioning boss 29, lever 210, Correction seat 31, push seat 32, floating seat 33, floating block 34, correction block 35, correction spring 36, push cylinder 37, push swing rod 38, swing rod shaft 39, push swing groove 310, V-groove correction groove 311, Lifting frame 41, lifting seat 42, lifting rod 43, lifting block 44, lifting roller 45, Axle body 51 , fork body 52 , ear hole 53 , shoulder 54 . DETAILED DESCRIPTION

[0028] 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.

[0029] Example

[0030] See also Figures 1 to 10 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.

[0031] The axle fork four-axis rotary hydraulic tooling in this embodiment includes a tooling bracket 1, and a clamping mechanism 2 and a correction mechanism 3 installed on the tooling bracket 1, and the tooling bracket 1 is connected to the rotary cylinder 11; when processing the long axle fork, it also includes a lifting mechanism 4, and the lifting mechanism 4 cooperates with the clamping mechanism 2 and the correction mechanism 3. When processing the short axle fork, there is no need to include the lifting mechanism 4, and the lifting mechanism 4 is used to support the axle fork 5.

[0032] The correction mechanism 3 in this embodiment includes a correction seat 31, a push seat 32, a floating seat 33, a floating block 34, a correction block 35, a correction spring 36, a push cylinder 37, a push rocker arm 38, a rocker arm shaft 39 and a push rocker groove 310. The correction block 35 is provided with a V-groove correction groove 311. The correction seat 31 is fixed on the tooling bracket 1, the push seat 32 is slidably installed on the correction seat 31, the floating seat 33 is fixed on the push seat 32, the floating block 34 is slidably installed on the floating seat 33, the correction block 35 is fixed on the floating block 34, the correction spring 36 is installed in the floating seat 33, and the two ends of the correction spring 36 are respectively abutted against the push seat 32 and the floating block 34.

[0033] The cylinder barrel of the push cylinder 37 in this embodiment is installed on the tooling bracket 1, the piston rod of the push cylinder 37 is connected to one end of the push rocker arm 38, the other end of the push rocker arm 38 is located in the push rocker groove 310, the push rocker groove 310 is set on the push seat 32, and the push rocker arm 38 is installed on the tooling bracket 1 through the rocker arm rotating shaft 39.

[0034] The clamping mechanism 2 in this embodiment includes a lower clamping seat 21, an upper clamping seat 22, a lower clamping block 23 and an upper clamping block 24. The lower clamping seat 21 is fixed on the tooling bracket 1, one end of the upper clamping seat 22 is rotatably connected to the lower clamping seat 21, and the other end of the upper clamping seat 22 is locked with the lower clamping seat 21 through a locking mechanism. The lower clamping block 23 and the upper clamping block 24 are respectively installed on the lower clamping seat 21 and the upper clamping seat 22. Positioning bosses 29 are provided on the lower clamping block 23 and the upper clamping block 24, and a pull rod 210 is installed on the other end of the upper clamping seat 22.

[0035] The locking mechanism in this embodiment includes a locking rod 25, a locking seat 26, a locking block 27 and a locking cylinder 28. The cylinder barrel of the locking cylinder 28 is fixed on the tooling bracket 1, the piston rod of the locking cylinder 28 is connected to the locking block 27, the locking block 27 is connected to the locking rod 25, the locking rod 25 is connected to the locking seat 26, and the locking seat 26 is fixed on the cylinder barrel of the locking cylinder 28.

[0036] The lifting mechanism 4 in this embodiment includes a lifting frame 41, a lifting seat 42, a lifting rod 43, a lifting block 44 and a lifting roller 45. The lifting seat 42 is fixed on the lifting frame 41, one end of the lifting rod 43 is installed on the lifting seat 42, the lifting block 44 is installed on the other end of the lifting rod 43, and the lifting roller 45 is installed on the lifting block 44.

[0037] The processing method of the axle fork four-axis rotary hydraulic tooling in this embodiment is as follows: determine whether to place the lifting mechanism 4 according to the length of the axle fork 5. If the lifting mechanism 4 needs to be placed, the lifting rod 43 can be rotated to adjust the height of the lifting roller 45, and the corresponding lower clamping block 23, upper clamping block 24, and correction block 35 are selected according to the specifications of the axle fork 5.

[0038] In the initial state, the correction block 35 is in the frontmost position, and the shaft fork 5 is placed on the lower clamping block 23, so that the positioning boss 29 on the lower clamping block 23 contacts the shaft body 51, and the fork body 52 is embedded in the V-groove correction groove 311.

[0039] When the fork body 52 is embedded in the V-groove correction groove 311 , the correction spring 36 can be set to adjust the floating block 34 and the correction block 35 on the floating seat 33 according to the height of the fork body 52 to achieve position calibration of the shaft fork 5 .

[0040] The upper clamping seat 22 is buckled with the lower clamping seat 21, and the push rocker rod 38 is controlled to swing by the push cylinder 37. The push rocker rod 38 pushes the push seat 32 to the final position, so that the shoulder 54 is stuck at the ends of the lower clamping block 23 and the upper clamping block 24, and the locking block 27 is controlled by the locking cylinder 28 to lock the upper clamping seat 22 and the lower clamping seat 21, so as to fix the position of the shaft fork 5, and then the ear hole 53 on the shaft fork 5 can be processed.

[0041] It should be noted that "four-axis" refers to the fourth axis in addition to the X, Y, and Z axes installed in the machine tool. That is to say, the tooling bracket 1 is driven by the rotary cylinder 11 to rotate 0°-360° along the fourth axis. When the rotary cylinder 11 drives the tooling bracket 1 to rotate 90°, the fork body 52 on one side can be processed. When the rotary cylinder 11 drives the tooling bracket 1 to rotate 270°, the fork body 52 on the other side can be processed.

[0042] Specifically, the semicircular lower clamping block 23 and the upper clamping block 24 are replaced according to the different diameters of the shaft body 51 of the long and short shaft forks 5, and the correction block 35 is replaced according to the different sizes of the fork body 52 of the shaft fork 5.

[0043] The V-groove correction groove 311 set on the correction block 35 plays an auxiliary positioning role. Its main purpose is to adjust the blank at the ear holes 53 on both sides of the fork body 52. ​​The fork body 52 blank is prevented from being over-positioned by the push cylinder 37. The correction block 35 is fixed to the floating block 34, and the floating block 34 can float up and down through the correction spring 36.

[0044] The length direction of the long and short shaft forks 5 is positioned by means of the positioning bosses 29 provided on the lower clamping block 23 and the upper clamping block 24. The positioning bosses 29 can make the clamping more stable.

[0045] Before loading the workpiece, the upper clamping seat 22 is pushed upwards, and after the workpiece is put in, the upper clamping seat 22 is closed and locked by the locking mechanism.

[0046] In the machine tool control program, the M code is set for the action of the cylinder, and the action of the cylinder can be accurately realized in programming. First, the push cylinder 37 is executed to push out the correction block 35 and adjust the correction block 35. Then the locking cylinder 28 is executed. The locking cylinder 28 adopts the lever principle to ensure the stability of the clamping force of the workpiece.

[0047] The lifting mechanism 4 is mainly used to facilitate the loading and placement of the long-axis fork, and is cancelled and not used when the short-axis fork is used.

[0048] Process description: Establish a program coordinate system. According to the processing characteristics and functional characteristics of the product, establish two coordinate systems in total. Establish coordinate system P1 with the center point of the long and short axis fork 5 in the 90-degree direction of the four-axis, and establish coordinate system P2 with the center point of the long and short axis fork 5 in the 270-degree direction of the four-axis.

[0049] 1. Use U drill to drill on P1 (with Figure 7 , 9 Based on, the tool support 1 is driven to rotate by the rotary cylinder 11. When P1 is at the top), the ear hole 53 is drilled in the coordinate system, and then the tool support 1 is rotated 180 degrees. Figure 7 , 9 Based on the above, the tooling bracket 1 is driven to rotate by the rotary cylinder 11, and the ear hole 53 is drilled in the coordinate system when P2 is at the top.

[0050] 2. Use a composite tool to rough bore the ear holes and countersink the positioning surfaces in the P2 coordinate system, then rotate the tooling bracket 1 180 degrees to rough bore the ear holes and countersink the positioning surfaces in the P1 coordinate system.

[0051] 3. Use a three-blade cutting slot to cut the retaining ring slot in the P1 coordinate system, then rotate the fixture bracket 1 180 degrees and cut the retaining ring slot in the P2 coordinate system.

[0052] 4. Use a fine boring tool to fine bore the ear holes.

[0053] 5. Use a 30-degree chamfering knife for chamfering.

[0054] 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 four-axis rotary hydraulic tooling for a shaft fork, comprising a tooling bracket (1), characterized in that: The invention also comprises a clamping mechanism (2) and a correction mechanism (3) mounted on the tooling support (1); the correction mechanism (3) comprises a correction seat (31), a displacement seat (32), a floating seat (33), a floating block (34), a correction block (35), a correction spring (36), a displacement oil cylinder (37), a displacement rocker (38), a rocker shaft (39) and a displacement rocker groove (310); the correction seat (31) is fixed on the tooling support (1); the displacement seat (32) is slidably mounted on the correction seat (31); the floating seat (33) is fixed on the displacement seat (32); the floating block (34) is slidably mounted on the floating seat (33); the correction block (35) is fixed on the floating block (310); 4), the correction spring (36) is installed in the floating seat (33), and the two ends of the correction spring (36) are respectively in contact with the push seat (32) and the floating block (34), the correction mechanism (3) also includes: the cylinder barrel of the push cylinder (37) is installed on the tooling bracket (1), the piston rod of the push cylinder (37) is connected to one end of the push rocker (38), the other end of the push rocker (38) is located in the push rocker groove (310), the push rocker groove (310) is provided on the push seat (32), the push rocker (38) is installed on the tooling bracket (1) through the rocker shaft (39), and the correction block (35) is provided with a V-groove correction groove (311).

2. The axle fork four-axis rotary hydraulic tooling according to claim 1 is characterized by: The clamping mechanism (2) comprises a lower clamping seat (21), an upper clamping seat (22), a lower clamping block (23) and an upper clamping block (24); the lower clamping seat (21) is fixed on the tooling bracket (1); one end of the upper clamping seat (22) is rotatably connected to the lower clamping seat (21); the other end of the upper clamping seat (22) is locked with the lower clamping seat (21) via a locking mechanism; the lower clamping block (23) and the upper clamping block (24) are respectively mounted on the lower clamping seat (21) and the upper clamping seat (22).

3. The axle fork four-axis rotary hydraulic tooling according to claim 2 is characterized by: The locking mechanism comprises a locking rod (25), a locking seat (26), a locking block (27) and a locking oil cylinder (28); the cylinder barrel of the locking oil cylinder (28) is fixed on the tooling bracket (1); the piston rod of the locking oil cylinder (28) is connected to the locking block (27); the locking block (27) is connected to the locking rod (25); the locking rod (25) is connected to the locking seat (26); and the locking seat (26) is fixed on the cylinder barrel of the locking oil cylinder (28).

4. The axle fork four-axis rotary hydraulic tooling according to claim 2 is characterized by: A lever (210) is mounted on the other end of the upper clamping seat (22).

5. The axle fork four-axis rotary hydraulic tooling according to claim 2 is characterized in that: The lower clamping block (23) and the upper clamping block (24) are both provided with positioning bosses (29).

6. The axle fork four-axis rotary hydraulic tooling according to claim 1 is characterized by: The lifting mechanism (4) is also included. The lifting mechanism (4) cooperates with the clamping mechanism (2) and the correction mechanism (3). The lifting mechanism (4) includes a lifting frame (41), a lifting seat (42), a lifting rod (43), a lifting block (44) and a lifting roller (45). The lifting seat (42) is fixed on the lifting frame (41), one end of the lifting rod (43) is mounted on the lifting seat (42), the lifting block (44) is mounted on the other end of the lifting rod (43), and the lifting roller (45) is mounted on the lifting block (44).

7. The shaft fork four-axis rotary hydraulic tooling according to claim 1 is characterized by: The tooling bracket (1) is connected to the rotary oil cylinder (11).

8. The shaft fork four-axis rotary hydraulic tooling according to claim 1 is characterized by: The shaft fork (5) is a long shaft fork or a short shaft fork.

9. A method for processing a four-axis rotary hydraulic tooling for a shaft fork according to any one of claims 1 to 8, characterized in that: The processing method is as follows, In the initial state, the correction block (35) is at the frontmost position, and the shaft fork (5) is placed on the lower clamping block (23), so that the positioning boss (29) on the lower clamping block (23) contacts the shaft body (51), and the fork body (52) is embedded in the V-groove correction groove (311); When the fork body (52) is inserted into the V-groove correction groove (311), the correction spring (36) is arranged to enable the floating block (34) and the correction block (35) to be adjusted on the floating seat (33) according to the height of the fork body (52), so as to achieve position calibration of the shaft fork (5); The upper clamping seat (22) is buckled with the lower clamping seat (21), and the push rocker (38) is controlled to swing by the push oil cylinder (37). The push rocker (38) is used to push the push seat (32) to the final position, so that the shoulder (54) is stuck on the ends of the lower clamping block (23) and the upper clamping block (24). The locking block (27) is controlled by the locking oil cylinder (28) to lock the upper clamping seat (22) and the lower clamping seat (21), so as to fix the position of the shaft fork (5), and then the ear hole (53) on the shaft fork (5) can be processed.

10. The processing method of the shaft fork four-axis rotary hydraulic tooling according to claim 9 is characterized in that: Whether to place the lifting mechanism (4) is determined according to the length of the shaft fork (5). If the lifting mechanism (4) is to be placed, the lifting rod (43) can be rotated to adjust the height of the lifting roller (45), and the corresponding lower clamping block (23), upper clamping block (24), and correction block (35) are selected according to the specifications of the shaft fork (5).

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