Fastening assembly and precision adjusting device

Abstract

The invention relates to a fastening assembly and a precision adjusting device. The fastening assembly comprises a first threaded hole, a fastening part and a second threaded hole. And a second adjusted object is arranged at the top of the first adjusted object. According to the fastening assembly and the precision adjusting device, a screw cap drives a threaded seat to be in threaded fit with the inner side of an adjusting positioning rod, the bottom of the threaded seat presses a clamping block downwards, and the clamping block is drawn close to the middle, so that the positioning rod is clamped and positioned, and the positioning rod is prevented from loosening; when the screw rod is rotated clockwise and moves downwards, the movable protruding block is ejected out of the outer side of the movable groove, so that the movable protruding block and the groove in the inner side of the second threaded hole are clamped and positioned, secondary positioning of the positioning rod is achieved, the positioning rod is effectively prevented from loosening due to polarization force, and the geometric accuracy between the stand column and the sliding base is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of machine tools, and specifically provides a fastening component and an adjustment precision device. Background Art

[0002] The horizontal milling and boring machine is a versatile machine tool with a high degree of automation. After major improvements, it has the characteristics of advanced structure and excellent performance. A fastening structure is required for the installation and positioning between the column and the slide of the horizontal milling and boring machine. After the two are firmly connected, the geometric accuracy between them completely depends on the machining accuracy of the contact surface between the two.

[0003] For example, the document with the publication number CN218377200U discloses a fastening component, an adjustment precision device, and a machine tool. The utility model includes a fastening component and an adjustment component. The adjustment component includes a first spherical washer, an adjustment screw, and a locking member. The first spherical washer is fixed to the first object to be adjusted. The adjustment screw is installed on the second object to be adjusted through the locking member. The adjustment screw moves up and down along the installation direction and is connected to the fastening component. A conical groove is provided at the bottom of the adjustment screw, and the conical groove cooperates with the first spherical washer. A gap is generated between the second object to be adjusted and the first object to be adjusted, so that the geometric accuracy between the second object to be adjusted and the first object to be adjusted can be adjusted.

[0004] However, in the actual installation process, when the screw is screwed into the threaded hole for fixation, the screw is easily affected by the polarization force during the process and is prone to loosening, resulting in an impact on the geometric accuracy between the column and the slide. Summary of the Invention

[0005] 1. Technical Problems to be Solved To solve the above technical problems, the present invention provides a fastening component and an adjustment precision device.

[0006] (2) Technical Solutions Based on this, according to one aspect of the present invention, a fastening component is provided, including a first threaded hole, a fastening component, and a second threaded hole; A second object to be adjusted is provided on the top of the first object to be adjusted. A first threaded hole is provided at the lower end inside the first object to be adjusted. The fastening component is in threaded cooperation with the inner thread of the first threaded hole. A second threaded hole is provided at the top of the second object to be adjusted. The bottom of the fastening component is in threaded cooperation with the second threaded hole; The fastening component includes an adjusting positioning rod, a fixing block, a clamping block, a threaded seat, a screw cap, a spherical washer, a conical washer, a spring washer, a positioning rod, a limiting structure, and a positioning structure. The adjusting positioning rod is in threaded fit with the inner side of the first threaded hole. A fixing block is fixed to the lower end inside the adjusting positioning rod. The threaded seat is in threaded fit with the inner side of the top of the adjusting positioning rod. The threaded seat and the bottom of the screw cap are of an integrated structure. A limiting structure is fixed to the upper right end of the adjusting positioning rod. A positioning structure is arranged at the bottom of the positioning rod.

[0007] Preferably, clamping blocks are equidistantly distributed on the top of the fixing block. The top of the clamping block is of a conical structure, and a positioning rod passes through the middle of the clamping block.

[0008] Preferably, a groove that matches the top of the clamping block is arranged at the bottom of the threaded seat, and the clamping block is embedded in the groove. When the threaded seat is screwed downward, the clamping blocks will move closer to each other, thereby clamping and positioning the positioning rod.

[0009] Preferably, a spherical washer is installed on the top of the screw cap. A conical washer is arranged on the top of the spherical washer. The positioning rod passes through the middle of the threaded seat and the screw cap, and the positioning rod is in threaded fit with the inner side of the second threaded hole.

[0010] Preferably, a receiving seat is arranged on the top of the clamping block, and the receiving seat passes through the middle of the threaded seat.

[0011] Preferably, the limiting structure includes a support seat, a moving seat, a contact anti-sliding block, a first telescopic spring, a sliding seat, a pressing block, and a second telescopic spring. The bottom of the support seat is fixed to the adjusting positioning rod. The moving seat is slidably matched with the inner side of the support seat. Contact anti-sliding blocks are relatively fixed to the front and rear sides of the left end of the moving seat. The contact anti-sliding blocks are in close fit with the right end arm of the screw cap. The right end of the first telescopic spring is fixed to the moving seat, and the left end of the first telescopic spring is fixedly connected to the support seat. The moving seat is fixed to the right end of the sliding seat. The pressing block is slidably matched with the top of the support seat. The top of the pressing block is fixed to the second telescopic spring, and the bottom of the second telescopic spring is fixedly connected to the support seat.

[0012] Preferably, the cross-section of the sliding seat is of a right trapezoidal structure, and the left end slope of the sliding seat is in contact with the bottom of the pressing block. When the pressing block is pressed downward, since the bottom of the pressing block is also of a sloping structure, the sliding seat is pushed to move horizontally to the right end.

[0013] Preferably, the positioning structure includes an embedding rod, an activity groove, an activity convex block, an activity rod, and a spiral rod. The top of the embedding rod is fixed to the positioning rod. The activity rod is movably connected with the inner side of the activity groove. The spiral rod is in threaded fit with the middle of the positioning rod, and the spiral rod is in contact with the rear end wall of the activity convex block.

[0014] Preferably, the middle part of the embedding rod is of a cavity structure, and movable grooves are distributed circumferentially on the outer side of the embedding rod. A sliding groove is arranged in the middle of the movable convex block, and the movable rod is slidably matched with the inner side of the sliding groove. There are three groups of movable convex blocks, and the movable convex blocks are circumferentially distributed. The front end wall of the movable convex block is of an arc-shaped structure, which is convenient for protruding the embedding rod, so that the movable convex block is engaged and positioned with the lower end inside the second threaded hole.

[0015] According to another aspect of the present invention, an adjustment precision device is provided, including a first object to be adjusted and a second object to be adjusted, and the first object to be adjusted is arranged on the top of the second object to be adjusted.

[0016] (III) Beneficial effects Compared with the prior art, the present invention provides a fastening assembly and an adjustment precision device, which have the following beneficial effects: For this fastening assembly and adjustment precision device, by driving the threaded seat to be in threaded cooperation with the inner side of the adjustment positioning rod through the screw cap, the bottom of the threaded seat presses down on the clamping block, and the clamping blocks are moved closer to the middle, so as to clamp and position the positioning rod to prevent the positioning rod from loosening; when the screw rod is rotated clockwise, when the screw rod moves downward, the movable convex block is pushed out to the outside of the movable groove, so as to be engaged and positioned with the inner groove of the second threaded hole, realizing secondary positioning of the positioning rod, thereby effectively preventing the positioning rod from loosening due to polarization force and increasing the geometric precision between the column and the sliding seat. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic cross-sectional structure diagram of the fastening component of the present invention; Figure 3 It is a schematic partial cross-sectional structure diagram of the fastening component of the present invention; Figure 4 It is a schematic partial three-dimensional structure diagram of the fastening component of the present invention; Figure 5 It is a schematic top view structure diagram of the limiting structure of the present invention; Figure 6 It is a schematic internal structure diagram of the limiting structure of the present invention; Figure 7 It is a schematic cross-sectional structure diagram of the positioning structure of the present invention; Figure 8 It is a schematic three-dimensional structure diagram of the positioning structure of the present invention.

[0018] In the figure: 1. First object to be adjusted, 2. Second object to be adjusted, 3. First threaded hole, 4. Fastening component, 5. Second threaded hole, 41. Adjusting positioning rod, 42. Fixed block, 43. Clamping block, 431. Receiving seat, 44. Threaded seat, 45. Nut, 46. Spherical washer, 47. Tapered washer, 48. Spring washer, 49. Positioning rod, 410. Limiting structure, 411. Positioning structure, 4101. Support seat, 4102. Moving seat, 4103. Contact anti-slip block, 4104. First telescopic spring, 4105. Sliding seat, 4106. Pressing block, 4107. Second telescopic spring, 4111. Insertion rod, 4112. Activity groove, 4113. Activity convex block, 4114. Activity rod, 4115. Screw rod. Detailed implementation mode

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] In a typical implementation mode of the present application, please refer to Figure 1 , a fastening assembly, including a first object to be adjusted 1, a second object to be adjusted 2, a first threaded hole 3, a fastening component 4, and a second threaded hole 5; a second object to be adjusted 2 is arranged on the top of the first object to be adjusted 1, a first threaded hole 3 is arranged at the lower end inside the first object to be adjusted 1, the fastening component 4 is in threaded fit with the inner side of the first threaded hole 3, a second threaded hole 5 is opened at the top of the second object to be adjusted 2, and the bottom of the fastening component 4 is in threaded fit with the second threaded hole 5.

[0021] In some embodiments, the first object to be adjusted 1 is a sliding seat, the second object to be adjusted 2 is a column, and the sliding seat and the column are the sliding seat and the column on a horizontal milling and boring machine.

[0022] Please refer to Figures 2 - 4 , a fastening assembly, the fastening component 4 includes an adjusting positioning rod 41, a fixed block 42, a clamping block 43, a threaded seat 44, a nut 45, a spherical washer 46, a tapered washer 47, a spring washer 48, a positioning rod 49, a limiting structure 410, and a positioning structure 411. The adjusting positioning rod 41 is in threaded fit with the inner side of the first threaded hole 3, a fixed block 42 is fixed at the lower end inside the adjusting positioning rod 41, the threaded seat 44 is in threaded fit with the inner side of the top of the adjusting positioning rod 41, the threaded seat 44 and the bottom of the nut 45 are of an integrated structure, a limiting structure 410 is fixed at the upper right end of the adjusting positioning rod 41, and a positioning structure 411 is arranged at the bottom of the positioning rod 49.

[0023] In some embodiments, clamping blocks 43 are equidistantly distributed on the top of the fixed block 42. The top of the clamping block 43 is in a conical structure. A positioning rod 49 passes through the middle of the clamping block 43. A groove that matches the top of the clamping block 43 is provided at the bottom of the threaded seat 44, and the clamping block 43 is embedded in the groove. When the threaded seat 44 is screwed downward, the clamping blocks 43 will approach each other, thereby clamping and positioning the positioning rod 49. A spherical washer 46 is installed on the top of the screw cap 45. A conical washer 47 is provided on the top of the spherical washer 46. The positioning rod 49 passes through the middle of the threaded seat 44 and the screw cap 45, and the positioning rod 49 is in threaded fit with the inner thread of the second threaded hole 5. A receiving seat 431 is provided on the top of the clamping block 43. The receiving seat 431 passes through the middle of the threaded seat 44. The positioning rod 49 passes through the middle of the through hole 451. The spherical washer 46 is a specially designed fastener, mainly used to disperse pressure, prevent loosening and adapt to spherical contact scenarios. The conical washer 47 is a fastener with a conical contact surface, mainly used to adapt to inclined contact surfaces, compensate for installation deviations and improve connection stability. The spring washer 48 is a washer with an elastic structure, usually in an open spiral or wavy shape, with an internal elastic structure, and generates deformation and releases elastic force when pressed.

[0024] Please refer to Figures 5 - 6 , a fastening assembly, the limiting structure 410 includes a support seat 4101, a moving seat 4102, a contact anti-slip block 4103, a first telescopic spring 4104, a sliding seat 4105, a pressing block 4106, and a second telescopic spring 4107. The bottom of the support seat 4101 is fixed to the adjusting positioning rod 41. The moving seat 4102 is slidably matched with the inner side of the support seat 4101. The front and rear sides of the left end of the moving seat 4102 are relatively fixed with contact anti-slip blocks 4103. The contact anti-slip blocks 4103 are in close fit with the right end arm of the screw cap 45. The right end of the first telescopic spring 4104 is fixed to the moving seat 4102, and the left end of the first telescopic spring 4104 is fixedly connected to the support seat 4101. The moving seat 4102 is fixed to the right end of the sliding seat 4105. The pressing block 4106 is slidably matched with the top of the support seat 4101. The pressing block 4106 is fixed to the top of the second telescopic spring 4107. The bottom of the second telescopic spring 4107 is fixedly connected to the support seat 4101.

[0025] In some embodiments, the cross-section of the sliding seat 4105 is in the shape of a right trapezoid, and the left end slope of the sliding seat 4105 is structured with the bottom of the pressing block 4106. When the pressing block 4106 is pressed down, since the bottom of the pressing block 4106 is also in a slope structure, it pushes the sliding seat 4105 to move horizontally to the right end. The first telescopic spring 4104 and the second telescopic spring 4107 are both ordinary springs, which are mechanical elements that use elastic deformation to store or release energy. The middle parts of the first telescopic spring 4104 and the second telescopic spring 4107 are both provided with telescopic rods, and the telescopic rods expand and contract synchronously with the expansion and contraction of the first telescopic spring 4104 and the second telescopic spring 4107, preventing the first telescopic spring 4104 and the second telescopic spring 4107 from shaking back and forth when their elastic potential energy is released.

[0026] Please refer to Figures 7 - 8 , a fastening assembly, the positioning structure 411 includes an embedding rod 4111, a movable groove 4112, a movable convex block 4113, a movable rod 4114, and a screw rod 4115. The top of the embedding rod 4111 is fixed to the positioning rod 49. The movable rod 4114 is movably connected to the inner side of the movable groove 4112. The screw rod 4115 is in threaded cooperation with the middle part of the positioning rod 49, and the screw rod 4115 is in contact with the rear end wall of the movable convex block 4113. The middle part of the embedding rod 4111 is in a cavity structure, and the movable grooves 4112 are distributed in a circumferential manner on the outer side of the embedding rod 4111. A sliding groove is provided in the middle of the movable convex block 4113, and the movable rod 4114 is slidably matched with the inner side of the sliding groove. There are three groups of movable convex blocks 4113 in total, and the movable convex blocks 4113 are circumferentially distributed respectively. The front end wall of the movable convex block 4113 is in an arc shape structure, which is convenient for protruding the embedding rod 4111, so that the movable convex block 4113 is fitted and positioned with the lower end inside the second threaded hole 5. The screw rod 4115 extends to the top of the positioning rod 49.

[0027] In a typical embodiment of the present application, an adjustment precision device is provided, including a first object to be adjusted 1 and a second object to be adjusted 2. The first object to be adjusted 1 is arranged on the top of the second object to be adjusted 2.

[0028] In summary, when in use, use a wrench to screw the adjusting positioning rod 41 into the first threaded hole 3 and fix it to the second adjustable object 2. When installing the second adjustable object 2, the spherical washer 46 and the conical washer 47 can be assembled. The cooperation of the spherical washer 46 and the conical washer 47 can provide flexible compensation for the subsequent torsion of the positioning rod 49. Then assemble the positioning rod 49 and the corresponding spring washer 48. The positioning rod 49 passes through the first threaded hole 3 from the top of the second adjustable object 2 downward, and the lower end of the positioning rod 49 is inserted into the second threaded hole 5, and at the same time passes through the adjusting positioning rod 41 (the adjusting positioning rod 41 is a hollow structure). The installation of the fastening component 4 is completed. At this time, the positioning rod 49 is in a relaxed state, and there is no direct contact between the second adjustable object 2 and the first adjustable object 1, and there is a certain gap. In the actual installation process, multiple fastening components 4 are used. The screwing length of the adjusting positioning rod 41 at different positions of the second adjustable object 2 can be adjusted with a wrench to achieve the geometric accuracy requirement between the second adjustable object 2 and the first adjustable object 1. Finally, the positioning rod 49 is locked to completely tighten the second adjustable object 2. After the positioning rod 49 is locked, the lower pressing block 4106 is pressed down first, so that the lower pressing block 4106 drives the sliding seat 4105 and the moving seat 4102 to move to the right end, so that the contact anti-sliding block 4103 releases the close fit with the screw cap 45, and then turns clockwise. The screw cap 45 is moved to drive the threaded seat 44 to cooperate with the inner thread of the adjustment positioning rod 41 and move to the lower end, so that the bottom of the threaded seat 44 presses down the clamping block 43, and the clamping block 43 moves closer to the middle, thereby clamping and positioning the positioning rod 49 to prevent the positioning rod 49 from loosening. After the adjustment is completed, the downward pressure on the pressing block 4106 is released, and the elastic potential energy of the deformation is restored by the telescopic spring 1 4104 and the telescopic spring 2 4107, driving the contact anti-sliding block 4103 to reset, and closely fit with the right end of the screw cap 45 to limit the rotation of the screw cap 45; The screw rod 4115 is rotated clockwise to make the screw rod 4115 threadedly engage with the inner side of the positioning rod 49 and move downward. When the screw rod 4115 moves downward, the movable protrusion 4113 is pushed outward from the movable groove 4112, so as to engage with the inner groove of the second threaded hole 5 to realize the secondary positioning of the positioning rod 49. Recheck the geometric accuracy of the second regulated object 2 and the first regulated object 1. If there is any change, repeat the above steps for fine adjustment. At this point, the entire assembly process is completed. The spherical contact surface between the conical washer 47, the spherical washer 46 and the adjustment positioning rod 41 in this structure ensures that even if the second regulated object 2 is slightly tilted after adjustment, the positive pressure applied by the positioning rod 49 to the second regulated object 2 is still perpendicular to the first regulated object 1; Thus, a firm connection between the second object to be adjusted 2 and the first object to be adjusted 1 is ensured. During later maintenance, if the geometric accuracy between the second object to be adjusted 2 and the first object to be adjusted 1 fails to meet the requirements, only the positioning rod 49 needs to be loosened, and then the adjusting positioning rod 41 can be adjusted with a wrench to restore the accuracy. Compared with the traditional fastening method that requires completely disassembling the second object to be adjusted 2 and scraping the two contact surfaces, it is more simple, rapid and effective.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fastening assembly, characterized in that: Including a first threaded hole (3), a fastening component (4), and a second threaded hole (5); The first threaded hole (3) is opened at the lower inner side of the first object to be adjusted (1). The fastening component (4) is in threaded fit with the inner thread of the first threaded hole (3). The second threaded hole (5) is opened at the top of the second object to be adjusted (2). The bottom of the fastening component (4) is in threaded fit with the second threaded hole (5); The fastening component (4) includes an adjusting positioning rod (41), a fixing block (42), a clamping block (43), a threaded seat (44), a screw cap (45), a spherical washer (46), a conical washer (47), a spring washer (48), a positioning rod (49), a limiting structure (410), and a positioning structure (411). The adjusting positioning rod (41) is in threaded fit with the inner thread of the first threaded hole (3). The fixing block (42) is fixed to the lower end inside the adjusting positioning rod (41). The threaded seat (44) is in threaded fit with the inner side of the top of the adjusting positioning rod (41). The threaded seat (44) and the bottom of the screw cap (45) are of an integrated structure. The limiting structure (410) is fixed to the upper right end of the adjusting positioning rod (41). The positioning structure (411) is arranged at the bottom of the positioning rod (49).

2. The fastening assembly according to claim 1, wherein: The top of the fixing block (42) is equidistantly distributed with clamping blocks (43). The top of the clamping block (43) is in a conical shape structure. The positioning rod (49) penetrates through the middle of the clamping block (43).

3. A fastening assembly according to claim 2, wherein: The bottom of the threaded seat (44) is provided with a groove that matches the top of the clamping block (43), and the clamping block (43) is embedded in this groove.

4. A fastening assembly according to claim 1, wherein: The spherical washer (46) is installed on the top of the screw cap (45). The conical washer (47) is arranged on the top of the spherical washer (46). The positioning rod (49) penetrates through the middle of the threaded seat (44) and the screw cap (45), and the positioning rod (49) is in threaded fit with the inner thread of the second threaded hole (5).

5. A fastening assembly according to claim 1, characterized in that: The top of the clamping block (43) is provided with a receiving seat (431). The receiving seat (431) penetrates through the middle of the threaded seat (44).

6. The fastening assembly according to claim 1, characterized in that: The limiting structure (410) includes a support base (4101), a moving base (4102), a contact anti-slip block (4103), a first telescopic spring (4104), a sliding base (4105), a pressing block (4106), and a second telescopic spring (4107). The bottom of the support base (4101) is fixed to the adjusting positioning rod (41). The moving base (4102) is slidably engaged with the inner side of the support base (4101). On the front and rear sides of the left end of the moving base (4102), contact anti-slip blocks (4103) are relatively fixed. The contact anti-slip blocks (4103) are in close contact with the right end arm of the rotary cap (45). The right end of the first telescopic spring (4104) is fixed to the moving base (4102), and the left end of the first telescopic spring (4104) is fixedly connected to the support base (4101). The moving base (4102) is fixed to the right end of the sliding base (4105). The pressing block (4106) is slidably engaged with the top of the support base (4101). The top of the pressing block (4106) is fixed to the second telescopic spring (4107), and the bottom of the second telescopic spring (4107) is fixedly connected to the support base (4101).

7. A fastening assembly according to claim 6, characterized in that: The cross-section of the sliding base (4105) is in the shape of a right trapezoid, and the left end slope of the sliding base (4105) is structurally connected to the bottom of the pressing block (4106).

8. A fastening assembly according to claim 1, characterized in that: The positioning structure (411) includes an embedding rod (4111), a moving slot (4112), a moving convex block (4113), a moving rod (4114), and a screw rod (4115). The top of the embedding rod (4111) is fixed to the positioning rod (49). The moving rod (4114) is movably connected to the inner side of the moving slot (4112). The screw rod (4115) is in threaded cooperation with the middle part of the positioning rod (49), and the screw rod (4115) is in contact with the rear end wall of the moving convex block (4113).

9. A fastening assembly according to claim 8, characterized in that: The middle part of the embedding rod (4111) is in a cavity structure, and moving slots (4112) are circumferentially distributed on the outer side of the embedding rod (4111). A sliding slot is provided in the middle of the moving convex block (4113), and the moving rod (4114) is slidably engaged with the inner side of the sliding slot.

10. An adjustment precision device, comprising a first object to be adjusted (1) and a second object to be adjusted (2), characterized in that: It further includes a fastening assembly as described in any one of claims 1-9.

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