A universal joint with an elastic structure

Abstract

The present invention provides a universal joint with an elastic structure. The universal joint with an elastic structure of the present invention includes a front floating block, a first elastic component, a connection component, a second elastic component, and a bearing spindle arranged in sequence. Thrust pin mounting holes are provided on the front floating block, the first elastic component, the connection component, and the bearing spindle. A fixture connection hole is provided on the front floating block. The front floating block can swing relative to the connection component, and the connection component can swing relative to the bearing spindle. The beneficial effects of the present invention are as follows: It can effectively solve the problems existing in the universal joints in the prior art, such as the overall structure being complex, the processing cost being relatively high, and it being not conducive to the application and popularization of processing equipment. Through the setting of the first elastic component and the second elastic component, the front floating block, the connection component, and the bearing spindle can swing and automatically reset by utilizing the elastic characteristics. The overall structure is simple, requires fewer installation components, reduces the processing cost, and is conducive to the application and popularization of processing equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of bar processing jigs, and particularly relates to a universal joint with an elastic structure. Background Art

[0002] A drilling machine is a commonly used device in manufacturing. It drills holes in workpieces by rotating the drill bit. Drill bits are classified into many types according to their usage environments. As electronic products become thinner and lighter, the specifications of PCB micro drills have become smaller and smaller. Correspondingly, the accuracy requirements for micro drill grinding equipment have become higher and higher. Drill bits are made of bar stock as raw materials and are processed by cutting and grinding on equipment. The bar stock is usually clamped on the work head for processing, and the work head realizes functions such as clamping, rotating, and indexing of the workpiece.

[0003] In the prior art, for example, patent CN201921544787.2 discloses a work head for bar grinding and cutting. In order to ensure the accurate rotation of the bar stock during the processing, the overall concentricity and coaxiality are greatly improved by the combined use of a thimble, a universal joint, and a barrel holder. The universal joint is composed of components such as a floating block front plate, a floating block, a floating bearing seat, a main shaft, and a bearing assembly. The overall structure is complex and the processing cost is relatively high, which is not conducive to the popularization and application of processing equipment. Summary of the Invention

[0004] To solve the problems in the prior art, the present invention provides a universal joint with an elastic structure, which solves the problems that the universal joint in the prior art has a complex overall structure, a relatively high processing cost, and is not conducive to the popularization and application of processing equipment.

[0005] A universal joint with an elastic structure according to the present invention includes a front floating block, a first elastic component, a connecting component, a second elastic component, and a bearing spindle arranged in sequence. Thrust pin mounting holes are provided on the front floating block, the first elastic component, the connecting component, and the bearing spindle. A plurality of fixture connection holes are provided on the front floating block. The first elastic component is respectively connected to the front floating block and the connecting component. The front floating block can swing relative to the connecting component under the action of the first elastic component, and the front floating block can automatically reset through the first elastic component. The second elastic component is respectively connected to the connecting component and the bearing spindle. The connecting component can swing relative to the bearing spindle under the action of the second elastic component, and the connecting component can automatically reset through the second elastic component. The connecting component includes at least two connecting fixing seats and at least one connecting elastic component, and a connecting fixing seat is provided on each side of the connecting elastic component. The connecting elastic component is respectively connected to the adjacent connecting fixing seats, and the adjacent two groups of connecting fixing seats of the connecting elastic component can swing relative to each other. The number of connecting fixing seats is three, and the number of connecting elastic components is two. The swinging directions of the connecting fixing seat and the adjacent two groups of connecting fixing seats are different. The connecting elastic component includes a connecting elastic sheet and four mounting screws. Four mounting holes are provided on the connecting elastic sheet. The connecting elastic sheet is connected to a connecting fixing seat through the mounting screws passing through the mounting holes on a set of diagonal corners. The connecting elastic sheet is connected to another connecting fixing seat through the mounting screws passing through the mounting holes on the other set of diagonal corners.

[0006] For further improvement of the present invention, the first elastic component includes a first elastic sheet and four first connecting screws, the second elastic component includes a second elastic sheet and four second connecting screws. Four connecting holes are provided on both the first elastic sheet and the second elastic sheet. The first elastic sheet is connected to the front floating block through the first connecting screws passing through the connecting holes on a set of diagonal corners. The first elastic sheet is connected to one end of the connecting component through the first connecting screws passing through the connecting holes on the other set of diagonal corners. The second elastic sheet is connected to the other end of the connecting component through the second connecting screws passing through the connecting holes on a set of diagonal corners. The first elastic sheet is connected to the bearing spindle through the second connecting screws passing through the connecting holes on the other set of diagonal corners.

[0007] For further improvement of the present invention, the materials of the first elastic sheet, the second elastic sheet, and the connecting elastic sheet are all titanium alloy.

[0008] For further improvement of the present invention, clearance portions are provided on the front floating block, the connecting fixing seat, and the bearing spindle. The clearance portions can make way for the swinging between the components.

[0009] For further improvement of the present invention, a connecting boss is provided on the end face of the front floating block facing the first elastic sheet. The first elastic sheet is connected to the connecting boss. The setting of the connecting boss can achieve a clearance effect between the front floating block and the first elastic sheet.

[0010] The present invention is further improved. An installation spacer ring is sleeved on the installation screw. The installation spacer ring can ensure a certain interval between the connecting elastic piece and the connecting fixing seats on both sides, facilitating swinging. A first spacer ring is sleeved on the first connecting screw. The first spacer ring can ensure a certain interval between the first elastic piece and the front floating block and the connecting fixing seat respectively, facilitating swinging. A second spacer ring is sleeved on the second connecting screw. The second spacer ring can ensure a certain interval between the second elastic piece and the connecting fixing seat and the bearing spindle respectively, facilitating swinging.

[0011] The present invention is further improved. Avoidance grooves are provided on the end faces at both ends of the connecting fixing seat. Through the setting of the avoidance grooves, the avoidance effect of the connecting fixing seat can be further improved.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: The present invention provides a universal joint with an elastic structure. By adopting its mechanism, the problems existing in the universal joint in the prior art, such as the overall structure being complex, the processing cost being relatively high, and being not conducive to the application and popularization of processing equipment, can be effectively solved. By using the product structure, the settings of the first elastic component and the second elastic component enable the front floating block, the connecting component, and the bearing spindle to swing and automatically reset by utilizing the elastic characteristics. At the same time, the overall structure is simple, the number of installation parts required is small, the processing cost is reduced, and it is conducive to the application and popularization of processing equipment. Description of the Drawings

[0013] In order to more clearly illustrate the solutions in the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic diagram of the disassembled structure of the present invention. Detailed Embodiments

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used in the description of the embodiments in this application are only for the purpose of describing specific embodiments, and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of this application or the above drawings are used to distinguish different objects, rather than to describe a specific order.

[0017] References to "embodiments" in this specification mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0018] In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0019] As Figure 1-2 shown, a universal joint with an elastic structure according to the present invention includes a front floating block 1, a first elastic component 2, a connecting component 3, a second elastic component 4, and a bearing main shaft 5.

[0020] Thrust pin mounting holes 6 for mating with the thrust pins in the bar clamping working head are provided on the front floating block 1, the first elastic component 2, the connecting component 3, and the bearing main shaft 5.

[0021] Multiple groups of fixture connection holes are provided on the front floating block.

[0022] The connecting component 3 includes three groups of connecting fixing seats and two groups of connecting elastic components. The connecting fixing seats and the connecting elastic components are arranged alternately, and it is ensured that connecting fixing seats are provided on both sides of the connecting elastic components.

[0023] The overall structure is made more stable by the alternate arrangement.

[0024] By the alternate arrangement of the connecting fixing seats and the connecting elastic components, the two groups of connecting fixing seats can swing relative to each other under the action of the connecting elastic components between the two groups of connecting fixing seats.

[0025] The connecting fixing seat includes a connecting portion 37 and a first clearance portion 36, and the connecting portion 37 and the first clearance portion 36 intersect and are arranged in a cross direction.

[0026] The cross arrangement can cover all the swing angle ranges to a great extent and improve the swing efficiency.

[0027] The three groups of connecting fixing seats and the two groups of connecting elastic sheet components are arranged in sequence, including a first connecting fixing seat 31, a first connecting elastic component, a second connecting fixing seat 32, a first connecting elastic component, and a third connecting fixing seat 33.

[0028] The arrangement of the three groups of connecting mounting seats can meet the precise rotation of the bar fixture grinding angle and achieve stepless swing angle adjustment.

[0029] Both the first connecting elastic component and the second connecting elastic component include a connecting elastic piece 34 and four mounting screws 35. Four mounting holes are provided on the connecting elastic piece 34. The connecting elastic piece 34 is connected to a connecting portion 37 of a connecting fixing seat through two mounting screws 35 passing through the mounting holes on one set of diagonal corners, and the connecting elastic piece 34 is connected to the connecting portion 37 of another connecting fixing seat through the other two mounting screws 35 passing through the mounting holes on the other set of diagonal corners.

[0030] Through the four mounting screws 35 of the connecting elastic piece 34, the two sets of connecting fixing seats are connected in pairs, enabling relative swinging between adjacent two sets of connecting fixing seats, and the swinging directions of adjacent two sets of connecting fixing seats are perpendicular to each other.

[0031] However, due to the use of an elastic piece as the intermediate member, slight swinging can also occur in non-vertical directions, improving the flexibility of the overall universal joint.

[0032] Among the first connecting fixing seat 31, the second connecting fixing seat 32, and the third connecting fixing seat 33, the setting directions of the connecting portions 37 of two adjacent sets of connecting fixing seats are staggered.

[0033] Through the arrangement of the three sets of connecting fixing seats, any angle can be swung efficiently and flexibly. Compared with the traditional universal joint with two sets of bearing assemblies, the structure of the universal joint in this application is more flexible in swinging.

[0034] Both the front floating block 1 and the bearing main shaft 5 are provided with a fixing portion 12 and a second clearance portion 11, and the fixing portion 12 and the second clearance portion 11 intersect in a cross direction.

[0035] Through the cross arrangement, all swinging angle ranges can be covered to a great extent, improving the swinging efficiency.

[0036] The first elastic component 2 includes a first elastic piece 21 and four first connecting screws 22, the second elastic component 4 includes a second elastic piece 41 and four second connecting screws 42, and four connecting holes are provided on both the first elastic piece 21 and the second elastic piece 41.

[0037] The first elastic piece 21 is connected to the connecting portion 37 of the first connecting fixing seat 31 through two first connecting screws 22 passing through the connecting holes on one set of diagonal corners, and the first elastic piece 21 is connected to the fixing portion 12 of the front floating block 1 through the other two first connecting screws 22 passing through the connecting holes on the other set of diagonal corners.

[0038] Through the four first connecting screws 22 of the first elastic piece 21, the front floating block 1 and the first connecting fixing seat 31 are connected in pairs, enabling relative swinging between the front floating block 1 and the first connecting fixing seat 31, and the swinging directions of the front floating block 1 and the first connecting fixing seat 31 are perpendicular to each other.

[0039] However, due to the use of elastic pieces as middleware, slight swinging can also be performed in non-vertical directions, improving the flexibility of the overall universal joint.

[0040] The second elastic piece 41 is connected to the connecting portion 37 of the third connecting and fixing seat 33 through two second connecting screws 42 passing through the connecting holes on a set of diagonals, and the second elastic piece 41 is connected to the fixing portion 12 of the bearing spindle 5 through another two second connecting screws 42 passing through the connecting holes on another set of diagonals.

[0041] Through the four second connecting screws 42 of the second elastic piece 41, the third connecting and fixing seat 33 and the bearing spindle 5 are respectively connected in pairs, enabling relative swinging between the third connecting and fixing seat 33 and the bearing spindle 5, and the swinging directions of the third connecting and fixing seat 33 and the bearing spindle 5 are perpendicular to each other.

[0042] However, due to the use of elastic pieces as middleware, slight swinging can also be performed in non-vertical directions, improving the flexibility of the overall universal joint.

[0043] The setting direction of the fixing portion 12 of the front floating block 1 is staggeredly arranged with the setting direction of the connecting portion 37 of the first connecting and fixing seat 31.

[0044] The setting direction of the fixing portion 12 of the bearing spindle 5 is staggeredly arranged with the setting direction of the connecting portion 37 of the third connecting and fixing seat 33.

[0045] Through the setting directions of the fixing portion 12 of the front floating block 1, the connecting portion 37 of the first connecting and fixing seat 31, the connecting portion 37 of the second connecting and fixing seat 32, the connecting portion 37 of the third connecting and fixing seat 33, and the fixing portion 12 of the bearing spindle 5 are all staggeredly arranged, enabling the overall universal joint to easily swing at any direction angle.

[0046] The materials of the first elastic piece 21, the second elastic piece 41, and the connecting elastic piece 34 are titanium alloy. The elastic pieces made of titanium alloy have the advantages of high strength, high toughness, and obvious resilience, and can ensure no deformation during long-term use.

[0047] Due to the obvious resilience advantage, it can automatically reset, providing a high usage experience.

[0048] The second clearance portion 11 of the front floating block 1 is a clearance notch, and the first clearance portions 36 of the first connecting and fixing seat 31, the second connecting and fixing seat 32, and the third connecting and fixing seat 33 are all clearance notches. The shape of the clearance notch is a notch similar to a circle. Through the symmetrical arrangement of the two sets of clearance notches, the clearance effect can be achieved efficiently.

[0049] The clearance portion of the bearing spindle 5 is a clearance groove, and the movement of the second elastic piece 41 is cleared through the clearance groove.

[0050] On the end face of the front floating block 1 facing the first elastic piece 21, a connecting boss 13 is provided. The first elastic piece 21 is connected to the connecting boss 13. By providing the connecting boss 13, the distance between the front floating block 1 and the first elastic piece 21 can be increased, thereby improving the clearance effect.

[0051] On the end faces at both ends of the connecting fixing seat, clearance grooves 38 are provided. By the function of the clearance grooves 38, the distance between the connecting fixing seat and the first elastic piece 21 or the second elastic piece 41 or the connecting elastic piece 34 can be increased, thereby improving the clearance effect.

[0052] Installation spacer rings 39 are sleeved on the four groups of installation screws 35. By providing the installation spacer rings 39, the relative distance between the connecting elastic piece 34 and two adjacent connecting fixing seats can be increased, thereby further improving the clearance effect and facilitating the swinging of the connecting elastic piece 34.

[0053] A first spacer ring 23 is sleeved on the first connecting screw 22. By providing the first spacer ring 23, the distance between the front floating block 1 and the first elastic piece 21 can be increased, and the distance between the first elastic piece 21 and the first connecting fixing seat 31 can be increased, thereby further improving the clearance effect and facilitating the swinging of the first elastic piece 21.

[0054] A second spacer ring 43 is sleeved on the second connecting screw 42. By providing the second spacer ring 43, the distance between the third connecting fixing seat 33 and the second elastic piece 41 can be increased, and the distance between the second elastic piece 41 and the bearing spindle 5 can be increased, thereby further improving the clearance effect and facilitating the swinging of the second elastic piece 41.

[0055] On the basis of the staggered arrangement of the swinging angles of the elastic pieces, in combination with the above clearance design structure, it can swing efficiently, is not restricted by the structure, is more flexible to use, there are multiple identical component combinations in the overall components, the processing cost is low, and the structural design is simple.

[0056] As can be seen from the above, the beneficial effects of the present invention are: adopting its mechanism, it can effectively solve the problems in the prior art that the universal joint has a complex overall structure, a high processing cost, and is not conducive to the application and popularization of processing equipment. By using the product structure, the settings of the first elastic component 2 and the second elastic component 4 enable the front floating block 1, the connecting component 3, and the bearing spindle 5 to swing and automatically reset by using the elastic characteristics. At the same time, the overall structure has a simple structure, requires fewer installation components, reduces the processing cost, and is conducive to the application and popularization of processing equipment.

[0057] In the above embodiments, the connecting fixing seat includes a connecting portion 37 and a clearance portion. The connecting portion 37 and the clearance portion intersect and are arranged in a cross direction. Both the front floating block 1 and the bearing spindle 5 are provided with a fixing portion 12 and a clearance portion. The fixing portion 12 and the clearance portion intersect and are arranged in a cross direction. The clearance portions of the front floating block 1, the first connecting fixing seat 31, the second connecting fixing seat 32, and the third connecting fixing seat 33 are all clearance notches. The shape of the clearance notch is a notch similar to a circle. By providing two sets of clearance notches on the clearance portion and the two sets of clearance notches being symmetrically arranged, the way to achieve clearance through this structure can also be that the front floating block 1, the connecting fixing seat, and the bearing spindle 5 all adopt a component shape with a circular arc cross-section, and the concave part is used as the clearance portion of the elastic piece, and the technical effects of the above solution can also be achieved.

[0058] In the above embodiments, the connecting assembly 3 includes three sets of connecting fixing seats and two sets of connecting elastic components. The connecting fixing seats and the connecting elastic components are arranged alternately, and it is ensured that there are connecting fixing seats on both sides of the connecting elastic components. The three sets of connecting fixing seats and the two sets of connecting elastic piece components are arranged in sequence, including the first connecting fixing seat 31, the first connecting elastic component, the second connecting fixing seat 32, the first connecting elastic component, and the third connecting fixing seat 33. By providing the three sets of connecting mounting seats, the precise rotation of the grinding angle of the bar fixture can be satisfied, and the stepless swing adjustment of the angle can be achieved. Obviously, to achieve the precise rotation of the grinding angle of the bar fixture and the stepless swing adjustment of the angle, the number of the connecting fixing seats and the connecting elastic piece 34 is not limited to the number set above, and the number can also be increased according to the actual product processing requirements, and the technical effects of the above solution can also be achieved.

[0059] In the above embodiments, mounting spacer rings 39 are sleeved on the four groups of mounting screws 35. By providing the mounting spacer rings 39, the relative distance between the connecting elastic piece 34 and the adjacent two connecting fixing seats can be increased, thereby further improving the clearance effect and facilitating the swinging of the connecting elastic piece 34. A first spacer ring 23 is sleeved on the first connecting screw 22. By providing the first spacer ring 23, the distance between the front floating block 1 and the first elastic piece 21 can be increased, and the distance between the first elastic piece 21 and the first connecting fixing seat 31 can be increased, thereby further improving the clearance effect and facilitating the swinging of the first elastic piece 21. A second spacer ring 43 is sleeved on the second connecting screw 42. By providing the second spacer ring 43, the distance between the third connecting fixing seat 33 and the second elastic piece 41 can be increased, and the distance between the second elastic piece 41 and the bearing main shaft 5 can be increased, thereby further improving the clearance effect and facilitating the swinging of the second elastic piece 41. Obviously, there can be other structural ways to improve the clearance effect and swinging effect by setting spacer rings, and the positions of the above settings are not limited. Connecting protrusions can also be provided on the end faces of the front floating block 1, the connecting fixing seat, and the bearing main shaft 5, which can also improve the swinging space of the elastic piece and the clearance effect, and can also achieve the technical effects of the above solution.

[0060] The specific embodiments described above are the preferred embodiments of the present invention, and do not limit the specific implementation scope of the present invention. The scope of the present invention includes but is not limited to this specific embodiment. All equivalent changes made in accordance with the present invention are within the protection scope of the present invention.

Claims

1. A universal joint with an elastic structure, characterized in that: It includes a front floating block, a first elastic component, a connecting component, a second elastic component and a bearing spindle arranged in sequence. Thrust pin mounting holes are provided on the front floating block, the first elastic component, the connecting component and the bearing spindle. A plurality of fixture connection holes are provided on the front floating block. The first elastic component is respectively connected to the front floating block and the connecting component. The front floating block can swing relative to the connecting component under the action of the first elastic component, and the front floating block can automatically reset through the first elastic component. The second elastic component is respectively connected to the connecting component and the bearing spindle. The connecting component can swing relative to the bearing spindle under the action of the second elastic component, and the connecting component can automatically reset through the second elastic component. The connecting component includes at least two connecting fixing seats and at least one connecting elastic component, and a connecting fixing seat is arranged on each side of the connecting elastic component. The connecting elastic component is respectively connected to the adjacent connecting fixing seats, and the adjacent two groups of connecting fixing seats of the connecting elastic component can swing relative to each other. The number of the connecting fixing seats is three, and the number of the connecting elastic components is two. The swinging directions of the connecting fixing seat and the adjacent two groups of connecting fixing seats are different. The connecting elastic component includes a connecting elastic sheet and four mounting screws. Four mounting holes are provided on the connecting elastic sheet. The connecting elastic sheet is connected to a connecting fixing seat through the mounting screws passing through the mounting holes on a set of diagonal corners, and the connecting elastic sheet is connected to another connecting fixing seat through the mounting screws passing through the mounting holes on the other set of diagonal corners.

2. The universal joint with an elastic structure according to claim 1, characterized in that: The first elastic component includes a first elastic sheet and four first connecting screws, and the second elastic component includes a second elastic sheet and four second connecting screws. Four connecting holes are provided on both the first elastic sheet and the second elastic sheet. The first elastic sheet is connected to the front floating block through the first connecting screws passing through the connecting holes on a set of diagonal corners, and the first elastic sheet is connected to one end of the connecting component through the first connecting screws passing through the connecting holes on the other set of diagonal corners. The second elastic sheet is connected to the other end of the connecting component through the second connecting screws passing through the connecting holes on a set of diagonal corners, and the first elastic sheet is connected to the bearing spindle through the second connecting screws passing through the connecting holes on the other set of diagonal corners.

3. The universal joint with an elastic structure according to claim 2, wherein: The materials of the first elastic sheet, the second elastic sheet and the connecting elastic sheet are all titanium alloy.

4. The universal joint with an elastic structure according to claim 2, characterized in that: Relief portions are provided on the front floating block, the connecting fixing seat and the bearing spindle, and the relief portions can make way for the swinging between the components.

5. The universal joint with an elastic structure according to claim 2, wherein: A connecting boss is provided on the end face of the front floating block facing the first elastic sheet, and the first elastic sheet is connected to the connecting boss. The setting of the connecting boss can achieve a relief effect between the front floating block and the first elastic sheet.

6. The universal joint with an elastic structure according to claim 2, characterized in that: An installation spacer ring is sleeved on the installation screw. The installation spacer ring can ensure that there is a certain interval between the connecting elastic piece and the connecting fixing seats on both sides, facilitating swinging. A first spacer ring is sleeved on the first connecting screw. The first spacer ring can ensure that there is a certain interval between the first elastic piece and the front floating block and the connecting fixing seat respectively, facilitating swinging. A second spacer ring is sleeved on the second connecting screw. The second spacer ring can ensure that there is a certain interval between the second elastic piece and the connecting fixing seat and the bearing spindle respectively, facilitating swinging.

7. The universal joint with an elastic structure according to claim 2, characterized in that: Avoidance grooves are provided on the end faces at both ends of the connecting fixing seat. Through the setting of the avoidance grooves, the avoidance effect of the connecting fixing seat can be further improved.

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