A compatible intermediate shaft drilling fixture

Abstract

The utility model discloses a compatible intermediate shaft drilling fixture, comprising a main body; a positioning piece, a sliding assembly and a clamping piece are arranged on the main body; a gear-matching hydraulic cylinder seat is fixed on the main body, and a gear-matching hydraulic cylinder is fixed on the gear-matching hydraulic cylinder seat; a movable end of the gear-matching hydraulic cylinder is connected with a gear-matching pressure plate, and an end of the gear-matching pressure plate is connected with a gear-matching ball pin; a fixed V-shaped block and a sliding V-shaped block support the optical axis part of the workpiece shaft head, and jointly determine the height center of the workpiece, an end face of one side of the fixed V-shaped block is close to the end face of the workpiece shaft shoulder, and is used to limit the axial movement of the workpiece, the gear-matching pressure plate extends into the tooth groove of the tooth part of the workpiece, and the gear-matching ball pin at the front end of the gear-matching pressure plate is used to align the workpiece, thereby limiting the angular rotation of the workpiece; the utility model can realize automatic adjustment of the fixture by machine tool control without manual intervention; it saves time and labor, avoids wrong replacement and missed replacement, and improves the frequency and reliability of production replacement.

Description

Technical Field

[0001] The utility model belongs to the technical field of drilling fixtures, in particular to a compatible intermediate shaft drilling fixture. Background Art

[0002] For the drilling process of shaft parts of different sizes on the vertical machining center, the fixture solution mostly adopts a combination fixture or a one-to-one special fixture. No matter which solution is adopted, manual replacement of fixtures or replacement of some parts is required when changing production, and automatic fast switching cannot be achieved. Under the condition of frequent production changes, it is time-consuming and labor-intensive, and increases the risk of switching. For example, the application number is 201810849998.0, and the name is a patent for a universal drilling fixture for intermediate shaft gears.

[0003] A common fixture solution is to use a double-center top method for positioning, and then use auxiliary supports and pressure plates to clamp the workpiece. Because this positioning method uses double centers for positioning, when the vertical cutting force is large, the top may be at risk of not being able to hold the workpiece tightly. Therefore, this solution relies more on auxiliary supports. However, for gearboxes of different sizes and types, the length of the intermediate shaft directly leads to the incompatibility of the auxiliary support position. Secondly, due to the different sizes of the top holes of the shaft heads of different workpieces, when compatible with different workpieces, the top protrudes to different lengths. When it protrudes too long, the top strength is poor, affecting the processing quality.

[0004] Due to the above reasons, the fixture solutions in the prior art cannot meet the compatibility of multiple varieties. Therefore, when changing production, the fixture needs to be replaced, the positioning parts of the fixture need to be manually replaced, and the clamping position of the fixture needs to be manually adjusted. For working conditions with frequent production changes, it is more troublesome and laborious, and there is a risk of wrong replacement or missed replacement; or the automatic switching of different fixtures is mostly completed by robots in conjunction with a three-dimensional intelligent fixture library, but this solution has high cost investment, many limitations, and cannot be widely used. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a compatible intermediate shaft drilling fixture, which is used to solve the problems in the background technology; it can realize automatic adjustment of the fixture by machine tool control without manual intervention; it saves time and labor, avoids wrong replacement and missed replacement, and improves the frequency and reliability of production change.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A compatible intermediate shaft drilling fixture comprises a main body; a positioning member, a sliding assembly and a pressing member are arranged on the main body;

[0008] The positioning member includes a fixed V-shaped block, a sliding V-shaped block and a gear assembly; the gear assembly includes a gear pressure plate, a gear hydraulic cylinder, a gear hydraulic cylinder seat, and a gear ball pin;

[0009] The gear-matching hydraulic cylinder seat is fixed on the body, and a gear-matching hydraulic cylinder is fixed on the gear-matching hydraulic cylinder seat; the movable end of the gear-matching hydraulic cylinder is connected to a gear-matching pressure plate, and the end of the gear-matching pressure plate is connected to a gear-matching ball pin; the fixed V-shaped block is fixed on the body; a groove is provided on the body, and a sliding V-shaped block is provided inside the groove, and a sliding connection is performed through a sliding assembly;

[0010] The fixed V-shaped block and the sliding V-shaped block support the optical axis of the workpiece shaft head and jointly determine the height center of the workpiece. The end face of one side of the fixed V-shaped block is close to the end face of the workpiece shaft shoulder and is used to limit the axial movement of the workpiece. The tooth pressure plate extends into the tooth groove of the tooth part of the workpiece. The tooth ball pin at the front end of the tooth pressure plate is used to align the workpiece, thereby limiting the angular rotation of the workpiece.

[0011] The pressing member comprises a fixed rotating cylinder seat, a fixed rotating cylinder, a first pressing plate, a sliding rotating cylinder seat, a sliding rotating cylinder, and a second pressing plate;

[0012] The fixed rotating cylinder seat is fixed on the body, the fixed rotating cylinder is installed on the fixed rotating cylinder seat, and the first pressing plate is fixed on the output end of the rotating cylinder seat;

[0013] The sliding rotary cylinder seat is fixed on the sliding bottom plate, and the sliding bottom plate slides along the groove on the body; the sliding rotary cylinder is installed on the fixed sliding rotary cylinder seat, and the second pressing plate is fixed on the output end of the sliding rotary cylinder, and the sliding rotary cylinder drives the second pressing plate to press the workpiece shaft head.

[0014] Preferably, the sliding assembly includes a three-position cylinder, a linear guide rail, a sliding base plate, an axial tightening cylinder, and a cylinder mounting plate;

[0015] The three-position cylinder is fixed to the body by bolts, the three-position cylinder rod end bearing is connected to the sliding base plate, the sliding base plate is fixed to the slider of the linear guide by bolts, and the linear guide is fixed to the inside of the groove on the fixture body by screws;

[0016] The axial tightening cylinder is fixed to the cylinder mounting plate by bolts, and the cylinder mounting plate is fixed to the sliding base plate by bolts; the three-position cylinder is used to drag the sliding assembly to move on the linear guide rail to adapt to workpieces of different lengths and sizes, and the action of the three-position cylinder is controlled by the machine tool control solenoid valve.

[0017] Furthermore, it also includes a hydraulic oil pipe, which is connected to the sliding rotating cylinder seat to supply oil to the sliding rotating cylinder.

[0018] Furthermore, the second pressing plate is fixed on the sliding rotating cylinder, the sliding rotating cylinder is fixed to the sliding rotating cylinder seat by bolts, and the sliding rotating cylinder is fixed to the sliding bottom plate by bolts.

[0019] Preferably, a zero point positioning pin is installed at the lower part of the upper fixture body for connection and positioning with the machine tool.

[0020] Preferably, a hydraulic pipe joint is installed on the side of the body for connecting to the hydraulic system of a machine tool.

[0021] Preferably, a plurality of lifting rings are provided on the main body.

[0022] Preferably, it also includes an auxiliary support assembly, which includes an auxiliary support cylinder, an auxiliary support cylinder seat and a support rod, the auxiliary support cylinder seat is fixed on the main body, the auxiliary support cylinder is installed on the auxiliary support cylinder seat, and the support rod is fixed on the output end of the auxiliary support cylinder for hydraulically driving the support rod to rise.

[0023] Preferably, it also includes a blowing assembly, which includes a mounting seat, a nozzle and a joint. The mounting seat is fixed on the body, and the nozzle is connected to the air source through the joint for blowing air to the fixture.

[0024] Compared with the prior art, the utility model has the following beneficial technical effects:

[0025] The utility model provides a compatible intermediate shaft drilling fixture, which adopts a double V-shaped block positioning method to carry out positioning, can withstand greater cutting force in the vertical direction, and reduces the fixture's dependence on auxiliary supports; a mobile component is used to support compatible intermediate shafts of different lengths, and there is no need to replace fixture parts; the machine tool control automatically completes automatic adjustment of the fixture without manual intervention; it saves time and effort, avoids wrong replacement and missed replacement, and improves the frequency and reliability of production changes.

[0026] Furthermore, the movement is performed by means of linear guides and cylinders, and the machine tool controls the solenoid valve to drive the three-position cylinder to switch the sliding component to the corresponding target position, automatically completing the switching of the fixture, thereby facilitating automatic switching. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of a compatible intermediate shaft drilling fixture of the utility model;

[0028] Figure 2 It is a side view schematic diagram of a compatible intermediate shaft drilling fixture structure of the utility model;

[0029] In the accompanying drawings: 1 is the main body; 2 is the pipe joint; 3 is the rotary cylinder seat; 4 is the rotary cylinder; 5 is the first pressure plate; 6 is the mounting seat; 7 is the nozzle; 8 is the joint; 9 is the tooth pressure plate; 10 is the tooth ball pin; 11 is the solenoid valve; 12 is the sliding bottom plate; 13 is the second pressure plate; 14 is the sliding rotary cylinder; 15 is the fixed V-block; 16 is the tooth rotary cylinder; 17 is the tooth rotary cylinder seat; 18 is the sliding V-block; 19 is the cylinder mounting seat; 20 is the linear guide; 21 is the slide rail locker; 22 is the axial tightening cylinder; 23 is the three-position cylinder; 24 is the sliding rotary cylinder seat; 25 is the auxiliary support cylinder; 26 is the auxiliary support cylinder seat; 27 is the support rod; 28 is the hydraulic oil pipe; 29 is the workpiece. DETAILED DESCRIPTION

[0030] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0033] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0035] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0036] Example

[0037] The utility model discloses a compatible intermediate shaft drilling fixture, comprising a main body 1, on which a positioning member, a sliding assembly and a pressing member are arranged, and the driving mode is hydraulic + pneumatic.

[0038] A zero-point positioning pin is installed at the lower part of the upper clamp body 1, which is used for machine tool connection and positioning; a hydraulic pipe joint 2 is installed on the side of the body, which is responsible for connecting the machine tool hydraulic system to control the entire clamp and supply oil to the clamp; a built-in oil circuit is opened inside the clamp body, connecting the oil circuit systems of various hydraulic components, and all components of the clamp are installed on the clamp body.

[0039] The positioning member comprises a fixed V-shaped block 15, a sliding V-shaped block 18, and a tooth assembly.

[0040] The gear aligning assembly includes a gear aligning pressure plate 9 , a gear aligning hydraulic cylinder 16 , a gear aligning hydraulic cylinder seat 17 , and a gear aligning ball pin 10 .

[0041] The gear-matching hydraulic cylinder seat 17 is fixed on the main body 1, and the gear-matching hydraulic cylinder 16 is fixed on the gear-matching hydraulic cylinder seat 17; the movable end of the gear-matching hydraulic cylinder 16 is connected to the gear-matching pressure plate 9, and the end of the gear-matching pressure plate 9 is connected to the gear-matching ball pin 10; the fixed V-shaped block 15 is fixed on the main body 1; a groove is provided on the main body 1, and a sliding V-shaped block 18 is provided inside the groove, and a sliding connection is performed through a sliding component.

[0042] The fixed V-block 15 and the sliding V-block 18 support the optical axis part of the shaft head of the workpiece 29 and jointly determine the height center of the workpiece 29. At the same time, the end face of one side of the fixed V-block 15 is close to the end face of the workpiece shoulder to limit the axial movement of the workpiece. The tooth pressure plate 9 extends into the tooth groove of the tooth part of the workpiece 29. The structure of the tooth ball pin 10 at the front end of the tooth pressure plate 9 aligns the workpiece 29, thereby limiting the angular rotation of the workpiece 29.

[0043] The clamping member comprises a fixed rotary cylinder seat 3, a fixed rotary cylinder 4, a first pressing plate 5, a sliding rotary cylinder seat 24, a sliding rotary cylinder 14, and a second pressing plate 13. The rotary cylinder drives the pressing plate to clamp the shaft head of the workpiece 29.

[0044] The auxiliary support assembly includes an auxiliary support cylinder 25, an auxiliary support cylinder seat 26, and a support rod 27. The auxiliary support cylinder seat 26 is fixed on the main body 1, the auxiliary support cylinder 25 is installed on the auxiliary support cylinder seat 26, and the support rod 27 is fixed on the output end of the auxiliary support cylinder 25 for hydraulically driving the support rod 27 to rise.

[0045] The air blowing assembly includes a mounting base 6, a nozzle 7, and a connector 8. The mounting base 6 is fixed on the body 1. The nozzle 7 is connected to an air source through the connector 8 and is used to blow air into the fixture to prevent iron filings from being clamped.

[0046] The sliding assembly includes a three-position cylinder 23, a linear guide rail 20, a sliding base plate 12, a sliding rotary cylinder seat 24, a sliding rotary cylinder 14, a second pressure plate 13, an axial tightening cylinder 22, a cylinder mounting plate 19, a sliding V-shaped block 18, a hydraulic oil pipe 28, and a solenoid valve 11.

[0047] The three-position cylinder 23 is fixed to the body 1 by bolts, and then the sliding base plate 12 is connected through the rod end bearing of the three-position cylinder 23, the sliding base plate 12 is fixed to the slider of the linear guide 20 by bolts, the linear guide is fixed to the fixture body 1 by screws, the second pressure plate 13 is fixed to the sliding rotating cylinder 14, the sliding rotating cylinder 14 is fixed to the sliding rotating cylinder seat 24 by bolts, the sliding rotating cylinder 24 is fixed to the sliding base plate 12 by bolts, the axial tightening cylinder 22 is fixed to the cylinder mounting plate 19 by bolts, the cylinder mounting plate 19 is fixed to the sliding base plate by bolts, and the hydraulic oil pipe 28 is connected to the sliding rotating cylinder seat 24 to supply oil to the sliding rotating cylinder 14.

[0048] The three-position cylinder 23 is responsible for dragging the sliding assembly on the linear guide rail 20 to move to adapt to workpieces 29 of different lengths and sizes. The movement of the three-position cylinder 23 is controlled by the machine tool control solenoid valve 11;

[0049] Although the length dimensions of the intermediate shaft assemblies are different, the outer diameter dimensions of the shaft heads are the same. Therefore, the use of double V-shaped blocks instead of double center positioning in the utility model can not only achieve compatibility with positioning of workpieces of different lengths, but also enhance the rigidity of the positioning structure.

[0050] The utility model is based on a positioning solution of double V-shaped blocks. The design of the auxiliary support in the fixture solution is relatively simplified and is arranged close to the fixed V-shaped side, so that a compatible design can be achieved without replacing the auxiliary support component.

[0051] The utility model utilizes the combined use of "three-position cylinder + electromagnetic valve" to realize the switching of machine tool program control and automatically adjust the clamp state.

[0052] The combined use of the linear guide rail and the cylinder in the utility model ensures the switching accuracy, and the dust-proof and iron chip-proof guide rail further ensures the stability and reliability of long-term use; the design of the external oil circuit and air circuit solves the power and "air detection" problems when adjusting the fixture, avoiding manual intervention;

[0053] The clamp in the utility model is used on a vertical machining center, and its driving mode is "hydraulic + pneumatic", and the control mode is to control the action of the clamp by integration with the machine tool, as well as the switching of the clamp state during production change.

[0054] The utility model provides a compatible intermediate shaft drilling fixture. When compatible with a long shaft, the first and second strokes of a three-position cylinder 23 are both extended, and a fixed limit is used to ensure that the sliding component reaches a target position.

[0055] When the secondary long axis is compatible, the second stroke of the three-position cylinder 23 is retracted, and the first stroke is extended to ensure that the sliding assembly reaches the target position.

[0056] When the short shaft is compatible, the first and second strokes of the three-position cylinder 23 are both retracted to ensure that the sliding assembly reaches the target position.

[0057] The extension and retraction of the piston rod of the cylinder is controlled by three solenoid valves 11, which are integrated with the system and processing program of the machine tool, so that the machine tool can automatically switch the corresponding fixture according to the workpiece 29 of different lengths when changing production.

[0058] The positioning scheme of the double V-shaped block in the utility model is more reliable, can withstand greater vertical cutting force, and reduces the reliance of the fixture on auxiliary support. The "linear guide + cylinder" method can achieve compatibility with intermediate shafts of different lengths without replacing fixture parts. The machine tool control can automatically complete the automatic adjustment of the fixture without manual intervention; it saves more time and effort, avoids wrong replacement and missed replacement, and improves the frequency and reliability of production change.

[0059] The utility model discloses a compatible intermediate shaft drilling fixture. When in use, firstly, the loading device of the machine tool places the workpiece 29 on the two V-shaped blocks of the fixture. The double V-shape determines the height center of the workpiece 29. Then, the axial tightening cylinder on the fixture pushes the workpiece 29 to make the workpiece 29 contact with the end face of the fixed V-shaped block. Finally, the tooth pressure plate is rotated and pressed to align the angular position of the workpiece 29. At this point, the positioning of the workpiece 29 is completed.

[0060] The two rotary cylinders are actuated, the first pressing plate 5 and the second pressing plate 13 press the workpiece 29, the auxiliary support is propped up, and the clamping of the workpiece 29 is completed.

[0061] The machine tool then performs an "air inspection" on the fixture to confirm that the workpiece 29 is positioned and the clamping state is normal, and feedback is given to the machine tool that it can wait to start processing.

[0062] After the workpiece 29 is processed, the clamping cylinder is released, the auxiliary support is reset, and then the machine tool detects through "air detection" that the rotary clamping cylinder has been released. The machine tool auxiliary loading and unloading device takes away the workpiece 29 and puts the new workpiece in place, waiting for processing.

[0063] When changing production, according to the product model to be replaced, the machine tool controls the solenoid valve 11 to drive the "three-position cylinder" to switch the sliding component to the corresponding target position, and automatically completes the switching of the fixture.

[0064] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0065] In addition, it should be understood that although this specification is described in accordance with the implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should take the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art. The above content is only to illustrate the technical idea of ​​the utility model, and cannot be used to limit the protection scope of the utility model. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the utility model shall fall within the protection scope of the claims of the utility model.

Claims

1. A compatible intermediate shaft drilling fixture, characterized in that: It comprises a main body (1); the main body (1) is provided with a positioning member, a sliding assembly and a pressing member; The positioning member comprises a fixed V-shaped block (15), a sliding V-shaped block (18) and a gear-aligning assembly; the gear-aligning assembly comprises a gear-aligning pressure plate (9), a gear-aligning hydraulic cylinder (16), a gear-aligning hydraulic cylinder seat (17), and a gear-aligning ball pin (10); The gear-matching hydraulic cylinder seat (17) is fixed on the body (1), and a gear-matching hydraulic cylinder (16) is fixed on the gear-matching hydraulic cylinder seat (17); the movable end of the gear-matching hydraulic cylinder (16) is connected to a gear-matching pressure plate (9), and the end of the gear-matching pressure plate (9) is connected to a gear-matching ball pin (10); the fixed V-shaped block (15) is fixed on the body (1); a groove is provided on the body (1), and a sliding V-shaped block (18) is provided inside the groove, and a sliding connection is performed through a sliding component; The fixed V-shaped block (15) and the sliding V-shaped block (18) support the optical axis of the shaft head of the workpiece (29) and jointly determine the height center of the workpiece (29); the end face of one side of the fixed V-shaped block (15) is close to the end face of the shaft shoulder of the workpiece (29) and is used to limit the axial movement of the workpiece (29); the tooth pressure plate (9) extends into the tooth groove of the tooth portion of the workpiece (29); the tooth ball pin (10) at the front end of the tooth pressure plate (9) is used to align the workpiece (29), thereby limiting the angular rotation of the workpiece (29); The pressing member comprises a fixed rotating cylinder seat (3), a fixed rotating cylinder (4), a first pressing plate (5), a sliding rotating cylinder seat (24), a sliding rotating cylinder (14), and a second pressing plate (13); The fixed rotating cylinder seat (3) is fixed on the body (1), the fixed rotating cylinder (4) is installed on the fixed rotating cylinder seat (3), and the first pressing plate (5) is fixed on the output end of the rotating cylinder seat (3); The sliding rotary cylinder seat (24) is fixed on the sliding base plate (12), and the sliding base plate (12) slides along the groove on the body (1); the sliding rotary cylinder (14) is installed on the fixed sliding rotary cylinder seat (24), and the second pressing plate (13) is fixed on the output end of the sliding rotary cylinder (14), and the sliding rotary cylinder (14) drives the second pressing plate (13) to press the shaft head of the workpiece (29).

2. A compatible intermediate shaft drilling fixture according to claim 1, characterized in that: The sliding assembly comprises a three-position cylinder (23), a linear guide rail (20), a sliding base plate (12), an axial tightening cylinder (22), and a cylinder mounting plate (19); The three-position cylinder (23) is fixed to the body (1) by bolts, the rod end bearing of the three-position cylinder (23) is connected to the sliding base plate (12), the sliding base plate (12) is fixed to the slider of the linear guide rail (20) by bolts, and the linear guide rail is fixed to the inside of the groove on the fixture body (1) by screws; The axial tightening cylinder (22) is fixed to the cylinder mounting plate (19) by bolts, and the cylinder mounting plate (19) is fixed to the sliding base plate (12) by bolts; the three-position cylinder (23) is used to drag the sliding assembly to move on the linear guide rail (20) to adapt to workpieces (29) of different lengths and sizes, and the action of the three-position cylinder (23) is controlled by a machine tool control solenoid valve.

3. A compatible intermediate shaft drilling fixture according to claim 2, characterized in that: It also includes a hydraulic oil pipe (28), which is connected to the sliding rotating cylinder seat (24) and supplies oil to the sliding rotating cylinder (14).

4. The compatible intermediate shaft drilling fixture according to claim 2, characterized in that: The second pressing plate (13) is fixed on the sliding rotating cylinder (14), the sliding rotating cylinder (14) is fixed to the sliding rotating cylinder seat (24) by bolts, and the sliding rotating cylinder seat (24) is fixed to the sliding bottom plate (12) by bolts.

5. The compatible intermediate shaft drilling fixture according to claim 1, characterized in that: The lower part of the upper fixture body of the main body (1) is provided with a zero point positioning pin for connection and positioning with the machine tool.

6. The compatible intermediate shaft drilling fixture according to claim 1, characterized in that: A hydraulic pipe joint (2) is installed on the side of the body (1) for connecting to the hydraulic system of a machine tool.

7. The compatible intermediate shaft drilling fixture according to claim 1, characterized in that: The main body (1) is provided with a plurality of lifting rings.

8. The compatible intermediate shaft drilling fixture according to claim 1, characterized in that: The auxiliary support assembly also includes an auxiliary support cylinder (25), an auxiliary support cylinder seat (26) and a support rod (27). The auxiliary support cylinder seat (26) is fixed on the main body (1), the auxiliary support cylinder (25) is installed on the auxiliary support cylinder seat (26), and the support rod (27) is fixed on the output end of the auxiliary support cylinder (25) for hydraulically driving the support rod (27) to rise.

9. The compatible intermediate shaft drilling fixture according to claim 1, characterized in that: It also includes a blowing assembly, which includes a mounting seat (6), a nozzle (7) and a joint (8), wherein the mounting seat (6) is fixed on the body (1), and the nozzle (7) is connected to an air source via the joint (8) for blowing air into the fixture.

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