Ball screw deflector mounting device and method

Abstract

The invention discloses a ball screw deflector mounting device which comprises a guide rail base, a guide rail is mounted on the guide rail base, a supporting block is detachably mounted on the guide rail base, a fixing seat is arranged at the top of the supporting block, and a horizontal mounting hole is formed in the fixing seat. Two positioning holes and one auxiliary positioning hole which are communicated with the horizontal mounting hole are formed in the top surface of the fixed seat, the two positioning holes are formed corresponding to the two ends of the horizontal mounting hole, a positioning block is arranged at the top of the fixed seat, two positioning pin rods and one auxiliary positioning pin are arranged at the bottom of the positioning block, and the positioning pin rods are matched with the positioning holes. The auxiliary positioning pins are matched with the auxiliary positioning holes, and positioning mechanisms are symmetrically arranged on the two sides of the fixing base. According to the invention, the installation of cover plate type ball screw deflectors with different specifications can be realized; deflectors at the two ends can be installed at the same time through one-time nut clamping; and by arranging the auxiliary positioning pin, the positioning pin rod is prevented from inclining when the deflector is installed, and the installation precision of the deflector can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of ball screw deflector installation, and in particular relates to a ball screw deflector installation device and method. Background Art

[0002] Ball screw is a common linear transmission element, widely used in machine tools, aerospace, automobiles and other fields. Since the transmission carrier is a steel ball, there is rolling friction between the screw and the nut, so the transmission accuracy and efficiency of the ball screw are relatively high.

[0003] Common ball screws include internal circulation type, insert tube type and end cover type. Choose the appropriate type according to different spaces and needs. The principle of the cover plate ball screw is similar to that of the insert tube type. The difference is that the cover plate ball screw uses a deflector instead of an insert tube to guide the steel balls to the return ball groove between the nut and the cover plate, so that the steel balls circulate between the screw, nut and cover plate. The deflector is generally fixed to the nut by the interference fit between the outer surface and the spiral groove of the nut. The installation position of the deflector is crucial to ensure that the steel balls can circulate smoothly without jamming. In addition, in order to prevent the deflector from changing position under the impact of the steel balls, the relative movement resistance between the two must be very large, which means that it is very difficult to install the deflector into the nut, which is very unfriendly to the conversion efficiency and cost control of the cover plate ball screw.

[0004] Therefore, how to solve the defects of the above-mentioned prior art has become the direction of efforts of technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to provide a ball screw deflector installation device and method, which can completely solve the shortcomings of the above-mentioned prior art.

[0006] The purpose of the present invention is achieved through the following technical solutions:

[0007] A ball screw deflector mounting device comprises a guide rail base, a guide rail is mounted on the guide rail base, a support block is detachably mounted on the guide rail base, a fixing seat is arranged on the top of the support block, a horizontal mounting hole is arranged on the fixing seat, two positioning holes and one auxiliary positioning hole connected to the horizontal mounting hole are arranged on the top surface of the fixing seat, the two positioning holes are arranged at two ends of the horizontal mounting hole, a positioning block is arranged on the top of the fixing seat, two positioning pins and one auxiliary positioning pin are arranged at the bottom of the positioning block, the positioning pin cooperates with the positioning hole, the auxiliary positioning pin cooperates with the auxiliary positioning hole, and positioning mechanisms are symmetrically arranged on both sides of the fixing seat.

[0008] Furthermore, the fixing seat is provided with a pin hole connected to the horizontal mounting hole.

[0009] Furthermore, a gap connected to the horizontal mounting hole is provided on the top surface of the fixing seat, and a locking screw is provided on the fixing seat corresponding to the gap.

[0010] Furthermore, the guide rail base includes a middle base and an end base, wherein the middle base is arranged in the middle of the guide rail, and the end bases are arranged at the bottom of both ends of the guide rail, and a plurality of connection holes are opened on the end bases.

[0011] Furthermore, the positioning mechanism includes an adapter block, a quick clamp, a guide rail slider, a pad block, a movable seat, a bushing and a thrust rod, the adapter block is fixedly connected to the end base, the quick clamp is installed on the adapter block, the guide rail slider is slidably fitted on the guide rail, the pad block is fixedly connected to the guide rail slider, the quick clamp is connected to the pad block, a spring is provided between the adapter block and the pad block, a movable seat is installed on the top of the pad block, a bushing hole is opened on the movable seat, one end of the bushing is inserted into the bushing hole, and the other end is opposite to the horizontal mounting hole, a set screw is provided on the movable seat, one end of the thrust rod is inserted into the bushing hole and extends into the bushing, and a spiral boss is provided at the end.

[0012] Further, the cross-sectional profile of the spiral boss is the same as the cross-sectional profile of the deflector.

[0013] Furthermore, a force wrench is provided at the other end of the thrust rod relative to the spiral boss.

[0014] Furthermore, the inner hole of the sleeve is provided with a spiral groove having the same shape as the nut, and the groove depth of the spiral groove in the inner hole of the sleeve is greater than the groove depth of the spiral groove on the nut.

[0015] Furthermore, the quick clamp includes a clamp body, a push rod, a handle, a left connecting plate and a right connecting plate. A horizontal through hole is provided at the end of the clamp body, and the push rod is slidably matched with the horizontal through hole. The bottom end of the handle has a horizontal section, one end of the horizontal section is connected to the rotating shaft at the end of the clamp body, and the other end is connected to the rotating shaft at one end of the left and right connecting plates. The other end of the left and right connecting plates is connected to the rotating shaft at one end of the push rod, and the other end of the push rod is threadedly connected to the adjusting screw, and the end of the adjusting screw is rotatably connected to the heightening block.

[0016] A method for installing a ball screw deflector comprises any of the above-mentioned installation devices, wherein a nut is placed in a horizontal installation hole of a fixing seat, a locking screw is used to radially position the nut, a positioning pin or a stop is used to perform axial positioning, and then the deflector is screwed into the inner hole of a shaft sleeve, the handle of a quick clamp is pressed down, and the shaft sleeve is driven to dock at both ends of the nut through a push rod, and a thrust rod is rotated so that a spiral boss at the front end of the thrust rod contacts an end face of the deflector, and the thrust rod is continuously rotated so that the thrust rod pushes the deflector to be slowly screwed into the nut until the end face of the deflector contacts the positioning pin rod, and then the thrust rod is rotated in the opposite direction so that the thrust rod is withdrawn from the spiral groove of the nut, and finally the handle of the quick clamp is released, and a spring drives the movable seat to reset, thereby completing the installation of the deflector.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The nut can be clamped once to install the deflectors at both ends at the same time;

[0019] 2. The quick clamp shortens the clamping time and improves the assembly efficiency;

[0020] 3. By setting auxiliary positioning pins, the positioning pin rod is prevented from tilting when the deflector is installed, which is beneficial to improve the installation accuracy of the deflector;

[0021] 4. It can realize the installation of cover-type ball screw deflectors of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a three-dimensional structural schematic diagram of the present invention;

[0023] Figure 2 yes Figure 1 A partial enlarged view of the middle A;

[0024] Figure 3 is a cross-sectional view of the present invention;

[0025] Figure 4 This is a diagram showing the position relationship between the nut, sleeve and thrust rod when installing the deflector;

[0026] Figure 5 It is a structural schematic diagram of the positioning block in the present invention;

[0027] Figure 6 It is a structural diagram of a nut;

[0028] Figure 7 It is a structural schematic diagram of the fixing seat in the present invention;

[0029] Figure 8 It is a structural schematic diagram of the thrust rod and the deflector in the present invention. DETAILED DESCRIPTION

[0030] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0031] like Figures 1 to 8As shown, a ball screw deflector mounting device comprises a guide rail base, on which a guide rail 1 is mounted, on which a support block 2 is detachably mounted by screws, a fixing seat 3 is provided on the top of the support block 2, a horizontal mounting hole 4 is provided on the fixing seat 3, two positioning holes 5 and one auxiliary positioning hole 6 which are connected to the horizontal mounting hole 4 are provided on the top surface of the fixing seat 3, the two positioning holes 5 are provided at the two ends of the horizontal mounting hole 4, a positioning block 7 is provided on the top of the fixing seat 3, two positioning pins 71 and one auxiliary positioning pin 72 are provided at the bottom of the positioning block 7, the positioning pin 71 cooperates with the positioning hole 5, the auxiliary positioning pin 72 cooperates with the auxiliary positioning hole 6, and positioning mechanisms are symmetrically provided on both sides of the fixing seat 3.

[0032] In this embodiment, the horizontal mounting hole 4 is used to clamp the nut 8. A gap 9 connected to the horizontal mounting hole 4 is provided on the top surface of the fixing seat 3. A locking screw 10 is provided on the fixing seat 3 corresponding to the gap 9. The locking screw 10 is tightened to fix the nut 8 in the horizontal mounting hole 4. Figure 7 The fixing seat 3 is provided with a pin hole 11 connected to the horizontal mounting hole 4, and the pin hole 11 cooperates with the pin hole on the outer circle of the nut 8 to axially position the nut 8. When there is no pin hole on the outer circle of the nut 8, a stopper may also be provided on the horizontal mounting hole 4 to position the nut 8 through the stopper.

[0033] When the deflector 28 is assembled, the two positioning pins 71 are inserted into the bead holes 12 at both ends of the nut 8 to determine the installation position of the deflector 28, and the auxiliary positioning pins 72 are inserted into the positioning holes 13 on the surface of the nut to prevent the positioning pins 71 from tilting when the deflector 28 is installed, resulting in a change in the installation position, thereby improving the installation accuracy of the deflector 28. Specifically, since the bead hole 12 of the nut 8 has a tolerance, in order to allow the positioning pin 71 to be inserted into the bead hole 12, the outer diameter of the positioning pin 71 needs to be smaller than the lower difference of the bead hole 12. Therefore, in the actual assembly process, there is a gap between the two positioning pins 71 and the bead hole 12. When the deflector 28 hits the positioning pin 71, the positioning pin 71 will have a certain tilt. In this embodiment, the auxiliary positioning pin 72 is added to form a three-point fixed plane, and the gap between the auxiliary positioning pin 72 and the positioning hole 13 is smaller than the gap between the positioning pin 71 and the bead hole 12, thereby preventing the positioning pin 71 from tilting and improving the positioning accuracy.

[0034] In this embodiment, the guide rail base includes a middle base 14 and an end base 15 . The middle base 14 is arranged in the middle of the guide rail 1 , and the end bases 15 are arranged at the bottom of both ends of the guide rail 1 . The end bases 15 are provided with a plurality of connection holes 16 .

[0035] In this embodiment, the positioning mechanism includes an adapter block 17, a quick clamp 18, a guide rail slider 19, a pad block 20, a movable seat 21, a sleeve 22 and a thrust rod 23. The adapter block 17 is fixedly connected to the end base 15, the quick clamp 18 is installed on the adapter block 17, the guide rail slider 19 is slidably fitted on the guide rail 1, the pad block 20 is fixedly connected to the guide rail slider 19, the movable end of the quick clamp 18 is connected to the pad block 20, and a spring is provided between the adapter block 17 and the pad block 20. The spring 24 is used for automatically resetting the moving seat 21 after loosening the quick clamp 18, which is beneficial to improving the assembly efficiency. The moving seat 21 is installed on the top of the pad block 20, and a shaft sleeve hole is opened on the moving seat 21. One end of the shaft sleeve 22 is inserted into the shaft sleeve hole, and the other end is opposite to the horizontal mounting hole 4. A set screw 25 is provided on the moving seat 21, and the set screw 25 is used to fix the shaft sleeve 22. One end of the thrust rod 23 penetrates into the shaft sleeve hole and extends into the shaft sleeve 22, and a spiral boss 26 is provided at the end.

[0036] The adapter block 17 is fixedly connected to the end base 15 by means of screws and the connection holes 16 on the end base 15. The end base 15 is provided with a plurality of connection holes 16 to facilitate the installation of cover-type ball screw deflectors of different specifications.

[0037] The cross-sectional profile of the spiral boss 26 is the same as that of the deflector 28, and is used to push the deflector 28 to screw into the nut 8. The spiral boss 26 is a convex shaft extending outward from the end of the thrust rod 23, and a spiral groove is provided at the end of the convex shaft.

[0038] The other end of the thrust rod 23 opposite to the spiral boss 26 is provided with a force wrench 27. An end 2301 is provided at the end of the thrust rod 23, and a matching hole 2302 is provided on the end 2301. The force wrench 27 is composed of a long shaft and a limit head arranged at both ends of the long shaft, and the long shaft is movably matched in the matching hole 2302. By adjusting the position of the long shaft in the matching hole 2302, the size of the force arm can be adjusted to achieve a labor-saving effect.

[0039] The inner hole of the sleeve 22 is provided with a spiral groove of the same shape as the nut 8 for guiding the installation of the deflector 28, and the groove depth of the spiral groove in the inner hole of the sleeve 22 is greater than the groove depth of the spiral groove on the nut 8, so as to facilitate the deflector 28 to be placed in the inner hole of the sleeve.

[0040] In this embodiment, the quick clamp 18 includes a clamp body 181, a push rod 182, a handle 183, a left connecting plate 184 and a right connecting plate 185. A horizontal through hole 186 is provided at the end of the clamp body 181, and the push rod 182 is slidably matched with the horizontal through hole 186. The bottom end of the handle 183 has a horizontal section 187, one end of the horizontal section 187 is connected to the rotating shaft at the end of the clamp body 181, and the other end is connected to the rotating shaft at one end of the left and right connecting plates 184, 185. The other end of the left and right connecting plates 184, 185 is connected to the rotating shaft at one end of the push rod 182, and the other end of the push rod 182 is threadedly connected to the adjusting screw 188, and the end of the adjusting screw 188 is rotatably connected to the raising block 20.

[0041] By turning the handle 183 left and right, the push rod 182 can be driven to move forward and backward, and then the movable seat 21 can be driven to move closer to or away from the fixed seat 3 through the pad block 20, and the pad block 20 slides forward and backward along the guide rail 1 through the guide rail slider 19. The position of the push rod 182 can be fine-tuned forward and backward by rotating the adjustment screw 188.

[0042] When assembling the deflector 28, first place the nut 8 in the horizontal mounting hole 4 of the fixing seat 3, then screw the deflector 28 into the inner hole of the sleeve 22, press down the handle 183 of the quick clamp, drive the sleeve 22 to dock at both ends of the nut 8 through the push rod 182, rotate the thrust rod 23, make the spiral boss 26 at the front end of the thrust rod 23 contact the end face of the deflector 28, continue to rotate the thrust rod 23, and slowly screw the deflector 28 into the nut 8 until the end face of the deflector 28 contacts the positioning pin rod 71, then rotate the thrust rod 23 in the opposite direction, make the thrust rod 23 withdraw from the spiral groove of the nut, finally, remove the handle 183 of the quick clamp, and the spring 24 drives the moving seat 21 to reset, thereby completing the installation of the deflector 28.

[0043] The invention can simultaneously install the deflectors at both ends by clamping the nut once; the quick clamp shortens the clamping time and improves the assembly efficiency; and the auxiliary positioning pin is provided to prevent the positioning pin rod from tilting when the deflector is installed, which is beneficial to improving the installation accuracy of the deflector.

[0044] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting the intention that the claimed invention requires more features than those explicitly recited in each claim. More specifically, as reflected in the claims below, inventive aspects lie in less than all the features of the individual embodiments disclosed above. Therefore, the claims that follow the specific embodiment are hereby expressly incorporated into the specific embodiment, with each claim itself serving as a separate embodiment of the present invention.

[0045] Those skilled in the art will appreciate that the modules in the devices in the embodiments may be adaptively changed and arranged in one or more devices different from the embodiments. The modules or units or components in the embodiments may be combined into one module or unit or component, and in addition they may be divided into a plurality of submodules or subunits or subcomponents. Except that at least some of such features and / or processes or units are mutually exclusive, all features disclosed in this specification (including the accompanying claims, abstracts and drawings) and all processes or units of any method or device disclosed in this manner may be combined in any combination. Unless otherwise expressly stated, each feature disclosed in this specification (including the accompanying claims, abstracts and drawings) may be replaced by an alternative feature providing the same, equivalent or similar purpose.

[0046] Furthermore, those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments but not other features, the combination of features from different embodiments is meant to be within the scope of the present invention and to form different embodiments.

[0047] It should be noted that the above embodiments illustrate the present invention rather than limit it, and that those skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbol between brackets shall not be construed as a limitation on the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "one" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising a number of different elements and by means of a suitably programmed computer. In a unit claim enumerating a number of devices, several of these devices may be embodied by the same hardware item. The use of the words first, second, and third, etc., does not indicate any order. These words may be interpreted as names.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A ball screw deflector mounting device, characterized in that: It includes a guide rail base, on which a guide rail is installed, a support block is detachably installed on the guide rail base, a fixing seat is provided on the top of the support block, a horizontal mounting hole is provided on the fixing seat, two positioning holes and one auxiliary positioning hole connected to the horizontal mounting hole are provided on the top surface of the fixing seat, the two positioning holes are provided at both ends of the horizontal mounting hole, a positioning block is provided on the top of the fixing seat, two positioning pins and one auxiliary positioning pin are provided at the bottom of the positioning block, the positioning pin cooperates with the positioning hole, the auxiliary positioning pin cooperates with the auxiliary positioning hole, and positioning mechanisms are symmetrically provided on both sides of the fixing seat.

2. The ball screw deflector mounting device according to claim 1, characterized in that: The fixing seat is provided with a pin hole which is communicated with the horizontal installation hole.

3. The ball screw deflector mounting device according to claim 2, characterized in that: The top surface of the fixing seat is provided with a gap connected to the horizontal mounting hole, and a locking screw is provided on the fixing seat corresponding to the gap.

4. The ball screw deflector mounting device according to claim 3, characterized in that: The guide rail base includes a middle base and an end base. The middle base is arranged in the middle of the guide rail, and the end bases are arranged at the bottoms of both ends of the guide rail. A plurality of connection holes are opened on the end bases.

5. The ball screw deflector mounting device according to claim 4, characterized in that: The positioning mechanism includes an adapter block, a quick clamp, a guide rail slider, a pad block, a movable seat, a shaft sleeve and a thrust rod. The adapter block is fixedly connected to the end base, the quick clamp is installed on the adapter block, the guide rail slider is slidably fitted on the guide rail, the pad block is fixedly connected to the guide rail slider, the quick clamp is connected to the pad block, a spring is provided between the adapter block and the pad block, a movable seat is installed on the top of the pad block, a shaft sleeve hole is opened on the movable seat, one end of the shaft sleeve is inserted into the shaft sleeve hole, and the other end is opposite to the horizontal mounting hole, a set screw is provided on the movable seat, one end of the thrust rod is inserted into the shaft sleeve hole and extends into the shaft sleeve, and a spiral boss is provided at the end.

6. The ball screw deflector mounting device according to claim 5, characterized in that: The cross-sectional profile of the spiral boss is the same as that of the deflector.

7. The ball screw deflector mounting device according to claim 5, characterized in that: The other end of the thrust rod opposite to the spiral boss is provided with a force wrench.

8. The ball screw deflector mounting device according to claim 5, characterized in that: The inner hole of the shaft sleeve is provided with a spiral groove with the same shape as the nut, and the groove depth of the spiral groove in the inner hole of the shaft sleeve is greater than the groove depth of the spiral groove on the nut.

9. The ball screw deflector mounting device according to claim 5, characterized in that: The quick clamp includes a clamp body, a push rod, a handle, a left connecting plate and a right connecting plate. A horizontal through hole is provided at the end of the clamp body, and the push rod is slidably matched with the horizontal through hole. The bottom end of the handle has a horizontal section, one end of the horizontal section is connected to the rotating shaft at the end of the clamp body, and the other end is connected to the rotating shaft at one end of the left and right connecting plates. The other end of the left and right connecting plates is connected to the rotating shaft at one end of the push rod, and the other end of the push rod is threadedly connected to the adjusting screw, and the end of the adjusting screw is rotatably connected to the pad block.

10. A method for installing a ball screw deflector, comprising the installation device according to any one of claims 1 to 9, characterized in that: Place the nut in the horizontal mounting hole of the fixing seat, use the locking screw to radially position the nut, use the locating pin or stop to position it axially, then screw the deflector into the inner hole of the sleeve, press down the handle of the quick clamp, drive the sleeve to dock at both ends of the nut through the push rod, rotate the thrust rod to make the spiral boss at the front end of the thrust rod contact with the end face of the deflector, continue to rotate the thrust rod, the thrust rod pushes the deflector to slowly screw into the nut until the end face of the deflector contacts with the locating pin rod, then rotate the thrust rod in the opposite direction to make the thrust rod withdraw from the spiral groove of the nut, finally remove the handle of the quick clamp on the plate, and the spring drives the moving seat to reset, thereby completing the installation of the deflector.

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