Flexible connection floating structure for machining

Abstract

The invention relates to the technical field of mechanical design and manufacturing, in particular to a machining flexible connection floating structure which comprises a driving part and a driven part, one section of the driving part is connected with a sleeve arranged at one end of the driven part in a sleeving mode, and an elastic connection layer is arranged between the inner wall of the sleeve and the driven part. The elastic connecting layer is adhered to the inner wall of the sleeve and the outer surface of the driven part, and the elastic connecting layer is made of a vulcanized rubber material. The floating connection structure has a more flexible effect, meets the machining requirements of floating and swinging, and can be used for a structure which cannot design an auxiliary support and needs to eliminate the influence of system errors.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical design and manufacturing, and in particular to a mechanically processed flexible connection floating structure. Background Art

[0002] In the field of mechanical processing and manufacturing, even the most precise manufacturing will still have errors, and the accumulated errors after assembly will be even greater. Some processing or connections require all errors to be eliminated in order to accurately process or effectively transmit torque. For example, reamer processing requires flexible connections to eliminate the processing quality risks caused by rotation and coaxial errors. In fact, most of the existing mechanical floating structures can only achieve swinging. Even if there is radial floating, its floating amount, reliability, and flexibility are also greatly lacking;

[0003] Due to the weight of the workpiece, floating parts basically have a certain amount of "drooping" situation. When rotating under the action of centrifugal force, they will "shake off" and cannot process parts normally. Therefore, many tools in mechanical processing can only be used under the conditions of drilling jigs or auxiliary supports. At present, flexible processing is dominant. Since the machining center cannot realize drilling jigs or auxiliary supports, it can only use rigid processing technology. Even with NC and high-precision equipment, the system errors and other factors that cannot be eliminated (the influence of iron chips and impurities in the coolant on the tool positioning surface) will still have a greater impact on the processing, resulting in fluctuations in processing dimensions and even defective and waste products.

[0004] Therefore, there is an urgent need to develop a floating connection structure that is more flexible and can meet the processing requirements of floating and swinging. It can be used in structures where auxiliary supports cannot be designed and the influence of system errors needs to be eliminated. Summary of the invention

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. The present invention provides a mechanically processed flexible connection floating structure.

[0006] A mechanically processed flexible connection floating structure comprises an active part and a driven part, wherein one section of the active part is connected to a sleeve sleeved on one end of the driven part, an elastic connection layer is provided between the inner wall of the sleeve and the driven part, and the elastic connection layer is bonded to the inner wall of the sleeve and to the outer surface of the driven part.

[0007] Furthermore, the elastic connecting layer is made of vulcanized rubber material.

[0008] Furthermore, an overload protection mechanism is provided between the sleeve and the follower located in the sleeve, and the overload protection mechanism includes a protection pin provided on the sleeve and penetrating the sleeve wall and an overload protection groove provided on the follower, and the protection pin can be inserted into the overload protection groove and a movable gap for the protection pin is left between the protection pin and the overload protection groove.

[0009] Furthermore, a radial swing adjustment mechanism is provided between the sleeve and the follower located in the sleeve, and the radial swing adjustment mechanism includes a plurality of annular grooves provided on the inner wall of the sleeve, and embedded and elastic steel belts are provided in the annular grooves. A threaded hole connected to the outside is provided on the annular groove of the sleeve, and an adjustment screw is threaded in the threaded hole, and the width of the annular groove is greater than the diameter of the corresponding threaded hole.

[0010] Furthermore, an axial clearance elimination adjustment mechanism is provided between the end surface of the sleeve close to the active member and the end surface of the driven member, and the axial clearance elimination adjustment mechanism includes a plurality of threaded holes evenly distributed on the end surface of the sleeve close to the active member, and an adjustment screw is provided in the threaded hole.

[0011] Furthermore, a mounting hole is provided at one end of the axis of the follower away from the sleeve, and a fastening bolt is screwed at the mounting hole position on the side wall of the follower.

[0012] Furthermore, a detachable connecting bolt is provided at one end of the mounting hole of the driven member close to the driving member, and a threaded hole is provided at one end of the driving member close to the driven member, and the connecting bolt can be screwed into the threaded hole on the driving member.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The present invention can more flexibly realize the transmission of torque between two different shafts, realize 360° free radial floating and swinging, and the floating amount and swinging amount can be designed according to needs;

[0015] The structure of the present invention can be used for hole finishing on NC and special machine equipment, torque transmission of couplings with different axes, etc., and has obvious effects on improving the finishing quality of holes, tool life and flexibility of couplings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of a mechanically processed flexible connection floating structure of the present invention;

[0017] Figure 2 It is a top view schematic diagram of a mechanically processed flexible connection floating structure of the present invention;

[0018] Figure 3 yes Figure 2 Middle AA section view;

[0019] Figure 4 yes Figure 2 BB cutaway diagram;

[0020] Figure 5 yes Figure 2 Schematic diagram of CC section view.

[0021] As shown in the figure: 1. Active part; 2. Driven part; 3. Sleeve; 4. Elastic connecting layer; 5. Overload protection groove; 6. Annular groove; 7. Elastic steel belt; 8. Threaded hole; 9. Adjustment screw; 10. Mounting hole; 11. Fastening bolt; 12. Positioning bolt; 13. Through hole; 14. Boss; 15. Protection pin. DETAILED DESCRIPTION

[0022] 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" 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, rather than indicating or implying 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 limiting the present invention.

[0023] 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 the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] In the description of the embodiments of the present invention, if a feature is referred to as being "set", "fixed", "connected" or "installed" on another feature, it may be directly set, fixed, connected to another feature, or indirectly set, fixed, connected, or installed on another feature.

[0025] In the description of the embodiments of the present invention, if "several" is involved, it means more than one, if "multiple" is involved, it means more than two, if "greater than", "less than" or "exceed" is involved, it should be understood as not including the number itself, if "above", "below" or "within" is involved, it should be understood as including the number itself. If "first" or "second" is involved, it should be understood as being used to distinguish technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0026] The following describes a double-cylinder high-pressure pump according to an embodiment of the present invention with reference to the accompanying drawings as an example.

[0027] A mechanically processed flexible connection floating structure comprises an active part 1 and a driven part 2, wherein one end of the active part 1 is connected to a sleeve 3 sleeved on one end of the driven part 2, an elastic connection layer 4 is provided between the inner wall of the sleeve 3 and the driven part 2, and the elastic connection layer 4 is bonded to the inner wall of the sleeve 3 and to the outer surface of the driven part 2.

[0028] As a preferred implementation scheme of this embodiment, the elastic connecting layer 4 is made of rubber material through a vulcanization process. Vulcanized rubber refers to vulcanized rubber, which has the characteristics of not becoming sticky and not easy to break. After vulcanization, a spatial three-dimensional structure is formed in the raw rubber, which has the advantages of high elasticity, heat resistance, tensile strength and insolubility in organic solvents. A strong bonding force can be generated between the vulcanized rubber and the metal active and driven parts, and the torque can be transmitted well.

[0029] As a preferred implementation of this embodiment, Figure 2 , Figure 3 and Figure 5 As shown, an overload protection mechanism is provided between the sleeve 3 and the driven member 2 located in the sleeve 3, and the overload protection mechanism includes a protection pin 4 provided on the sleeve 3 and penetrating the wall of the sleeve 3, and an overload protection groove 5 provided on the driven member 2, the protection pin 4 can be inserted into the overload protection groove 5, and a movable gap of the protection pin 4 is left between the protection pin 4 and the overload protection groove 5, the active member 1 drives the driven member 2 to rotate through the vulcanized rubber, when the rotational torque between the driven member 2 and the active member 1 is overloaded, the overload protection mechanism works, that is, the protection pin 15 only contacts the side wall of the overload protection groove 5, and takes over the vulcanized rubber to transmit the torque.

[0030] As a preferred implementation of this embodiment, Figure 2 , Figure 3 and Figure 4 As shown, a radial swing adjustment mechanism is provided between the sleeve 3 and the driven member 2 located in the sleeve 3, and the radial swing adjustment mechanism includes a plurality of annular grooves 6 provided on the inner wall of the sleeve 3, and an elastic steel belt 7 is embedded in the annular groove 6. A threaded hole 8 connected to the outside is provided on the annular groove 6 on the sleeve 3, and an adjustment screw 9 is screwed in the threaded hole 8. The width of the annular groove 6 is greater than the diameter of the corresponding threaded hole 8. When the active member 1 and the driven member 2 are statically coaxial, the required value can be achieved through the radial swing adjustment mechanism.

[0031] As a preferred implementation of this embodiment, Figure 3As shown, an axial clearance elimination adjustment mechanism is provided between the end surface of the sleeve 3 close to the active member 1 and the end surface of the driven member 2. The axial clearance elimination adjustment mechanism includes a plurality of threaded holes 8 evenly distributed on the end surface of the sleeve 3 close to the active member 1, and an adjustment screw 9 is provided in the threaded hole 8. The axial clearance between the active member 1 and the driven member 2 is adjusted by the axial clearance elimination adjustment mechanism.

[0032] As a preferred implementation of this embodiment, Figure 1 , Figure 2 and 3 As shown, a mounting hole 10 is provided at one end of the axis of the follower 2 away from the sleeve 3 , and a fastening bolt 11 is screwed on the side wall of the follower 2 . The mounting hole 10 in the follower 2 is used to install a tool, and the tool is fastened by the fastening bolt 11 .

[0033] As a preferred implementation of this embodiment, Figure 3 As shown, the follower 2 is provided with a threaded hole 8 which passes through the follower 2 and is connected to the mounting hole 10 at one end close to the active member 1. A positioning bolt 12 is installed on the threaded hole 8 from the mounting hole 10 side to control the screwing depth of the positioning bolt 12 and the depth of the tool installed in the mounting hole 12.

[0034] As a preferred implementation of this embodiment, Figure 3 As shown, a through hole 13 penetrating through the active component and communicating with the interior of the sleeve 3 is provided at the axis of the active component 1 . The through hole 13 can be used as a channel for coolant to enter and exit the active component 1 when in use.

[0035] As a preferred implementation of this embodiment, Figure 3 As shown, a boss 14 is provided on the outer side of the driven member 2 around the overload protection groove 5, and the boss 14 is embedded in the vulcanized rubber to increase the connection between the driven member 2 and the vulcanized rubber and enhance the torque transmission effect.

[0036] During the specific production of the present invention, the active component 1 and the driven component 2 are machined, heat treated, and assembled, then fixed on a special fixture and subjected to integrated rubber vulcanization. After the hardness, torque, accuracy, and "droop" amount are checked to meet the requirements, the active component 1 and the driven component 2 are finely machined as a whole to ensure the relative accuracy of the active component 1 and the driven component 2, and are adjusted to an ideal state through a "radial swing adjustment mechanism", and the axial clearance between the active component 1 and the driven component 2 is eliminated through an "axial clearance elimination adjustment".

[0037] In the normal use process of the present invention, the rubber stress release may cause the jump change, which can be adjusted by the "radial swing adjustment mechanism". After the stress is released, the accuracy will gradually stabilize;

[0038] The present invention utilizes the principle of torsional vibration damper, and connects the active part 1 and the driven part 2 that needs to float by vulcanized rubber. A strong bonding force can be generated between the rubber and the metal part, and the torque can be transmitted well.

[0039] The present invention can control the hardness of the rubber by setting the rubber vulcanization process according to the weight of the floating tool, i.e., the driven part, to ensure its initial rigidity and floating ability, and effectively control the initial "droop" amount of the driven part to avoid affecting the quality of the processed workpiece;

[0040] In the manufacturing process of the present invention, the coaxial error of manufacturing and vulcanization and the error caused by the stress change of the vulcanized rubber can be adjusted by adjusting the adjustment screw 8 and the elastic steel belt 7 of the "radial swing adjustment mechanism". The adjustment screw 8 adjusts the radial swing by stably squeezing the vulcanized rubber through the elastic steel belt 7. After testing, the swing can be adjusted to within 0.01mm. The axial clearance between the active part and the driven part of the two vulcanized connections can be eliminated by the "axial clearance elimination adjustment".

[0041] When the present invention encounters abnormal resistance or other overload torque during use, the overload protection mechanism designed in the structure will take over the torque transmission of the vulcanized rubber to avoid damaging the function of the floating mechanism.

[0042] The present invention and its embodiments are described above, and such description is not restrictive. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it, without departing from the purpose of the invention, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the present invention.

Claims

1. A mechanically processed flexible connection floating structure, characterized in that: It comprises an active part and a driven part, wherein one end of the active part is connected with a sleeve sleeved on one end of the driven part, an elastic connection layer is arranged between the inner wall of the sleeve and the driven part, and the elastic connection layer is bonded to the inner wall of the sleeve and the outer surface of the driven part.

2. A mechanically processed flexible connection floating structure according to claim 1, characterized in that: The elastic connection layer is made of rubber material through a vulcanization process.

3. The mechanically processed flexible connection floating structure according to claim 1, characterized in that: An overload protection mechanism is provided between the sleeve and a follower located in the sleeve. The overload protection mechanism includes a protection pin provided on the sleeve and penetrating the sleeve wall and an overload protection groove provided on the follower. The protection pin can be inserted into the overload protection groove and a movable gap for the protection pin is left between the protection pin and the overload protection groove.

4. The mechanically processed flexible connection floating structure according to claim 1, characterized in that: A radial swing adjustment mechanism is provided between the sleeve and the follower located in the sleeve, and the radial swing adjustment mechanism includes a plurality of annular grooves provided on the inner wall of the sleeve, and embedded and elastic steel belts are provided in the annular grooves. A threaded hole connected to the outside is provided on the annular groove of the sleeve, and an adjustment screw is screwed in the threaded hole, and the width of the annular groove is greater than the diameter of the corresponding threaded hole.

5. The mechanically processed flexible connection floating structure according to claim 1, characterized in that: An axial clearance elimination adjustment mechanism is provided between the end surface of the sleeve close to the active member and the end surface of the driven member. The axial clearance elimination adjustment mechanism comprises a plurality of threaded holes evenly distributed on the end surface of the sleeve close to the active member, and adjustment screws are provided in the threaded holes.

6. The mechanically processed flexible connection floating structure according to claim 1, characterized in that: A mounting hole is provided at one end of the axis of the driven member away from the sleeve, and a fastening bolt is screwed on the side wall of the driven member.

7. The mechanically processed flexible connection floating structure according to claim 6, characterized in that: A threaded hole penetrating the driven member and communicating with the mounting hole is provided at one end of the driven member close to the driving member, and a positioning bolt is installed on the threaded hole from the mounting hole side.

8. The mechanically processed flexible connection floating structure according to claim 6, characterized in that: A through hole is provided at the axis center of the active member and is connected with the inside of the sleeve.

9. The mechanically processed flexible connection floating structure according to claim 3, characterized in that: A boss is arranged on the outer side of the follower and around the overload protection groove.

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