CN117139820B - Positioning and clamping device for ball cage assembly and assembly method - Google Patents
Positioning and clamping device for ball cage assembly and assembly method Download PDFInfo
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- CN117139820B CN117139820B CN202311404871.5A CN202311404871A CN117139820B CN 117139820 B CN117139820 B CN 117139820B CN 202311404871 A CN202311404871 A CN 202311404871A CN 117139820 B CN117139820 B CN 117139820B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 230000007246 mechanism Effects 0.000 claims abstract description 83
- 238000003825 pressing Methods 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 238000003466 welding Methods 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 20
- 238000003756 stirring Methods 0.000 claims description 11
- 230000033001 locomotion Effects 0.000 claims description 5
- 238000002788 crimping Methods 0.000 description 11
- 230000009471 action Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000003189 isokinetic effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
- B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
- B23K20/126—Workpiece support, i.e. backing or clamping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/26—Auxiliary equipment
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Abstract
The invention discloses a positioning and clamping device for a ball cage assembly, which is used for positioning and clamping a shaft head assembled with a ball cage, and comprises: the clamping device comprises a chuck, a clamping jaw mechanism and a driving mechanism, wherein the driving mechanism drives the clamping jaw mechanism to move between a clamping position and a loosening position; the jaw mechanism comprises a body part and a clamping part which are connected with the driving mechanism, and the body part is provided with an avoidance groove; the clamping portion forms a clamping surface configured to abut against an outer peripheral surface of the connecting end of the stub shaft when the jaw mechanism is in the clamped position, and a pressing surface configured to abut against a rear end surface of the connecting end of the stub shaft when the jaw mechanism is in the clamped position. The assembly method for the ball cage assembly, which is realized by the positioning and clamping device, is also disclosed. The positioning and clamping device can be used for positioning and clamping the shaft heads assembled together with the ball cages, so that the assembly sequence can be changed to greatly improve the assembly efficiency, and the risk of damaging the shaft heads by the clamp can be greatly reduced.
Description
Technical Field
The invention belongs to the field of clamp equipment, and particularly relates to a positioning and clamping device for a ball cage assembly and an assembly method.
Background
The ball cage structure is generally used on an automobile transmission shaft, and the ball cage has the advantages of high isokinetic performance, high transmission efficiency and the like. The ball cage assembly generally comprises a ball cage, a shaft head and a shaft tube, wherein one end of the shaft head is generally pressed into an internal spline in the ball cage through an external spline on the shaft head during assembly, and the other end of the shaft head is welded with a rear shaft tube through friction welding. Friction welding is a method in which friction heat generated by friction between two workpieces to be welded is used to heat and melt friction surfaces, and the friction surfaces are pressurized and cooled to be connected together.
The assembly process of the ball cage assembly in the related art is very complex, the assembly efficiency is low, the requirement on assembly tools is high, and even a plurality of sets of assembly tools need to be prepared. In addition, in the friction welding process in the related art, the clamp for clamping the fixed shaft head needs very large clamping force to ensure that the shaft head is clamped to meet the friction welding requirement, and the shaft head is extruded and damaged under the action of the clamping force with a certain probability.
Disclosure of Invention
The present application aims to solve one of the technical problems in the related art to some extent. To this end, the present application provides a positioning and clamping device for a ball cage assembly and an assembly method.
In order to achieve the above purpose, the present application adopts the following technical scheme: a positioning and clamping device for a ball cage assembly for positioning and clamping a shaft head assembled with a ball cage, the positioning and clamping device comprising: the chuck comprises a base and a sliding rail arranged on the base; the claw mechanism is arranged on the base and is arranged on the sliding rail in a sliding way; the driving mechanism is arranged on the chuck and connected with the jaw mechanism so as to drive the jaw mechanism to move between a clamping position and a loosening position along the sliding rail; the clamping jaw mechanism comprises a body part connected with the driving mechanism and a clamping part arranged on the body part, wherein an avoidance groove is formed in the body part, and a space is reserved between the inner wall of the avoidance groove and the outer surface of the ball cage when the clamping jaw mechanism is positioned at the clamping position; the clamping portion is provided with an arc-shaped groove, the bottom wall of the arc-shaped groove forms a clamping surface, the side wall of the arc-shaped groove forms a jacking surface, the clamping surface is configured to be abutted against the outer peripheral surface of the connecting end of the shaft head when the jaw mechanism is in a clamping position, and the jacking surface is configured to be abutted against the rear end surface of the connecting end of the shaft head when the jaw mechanism is in the clamping position.
The application of the application has the following beneficial effects: the inventor finds that the main reason that the assembly efficiency of the ball cage assembly is low at present is that in the prior art, the shaft head and the shaft tube are firstly subjected to friction welding, and then the shaft head and shaft tube structure obtained by welding is assembled to the ball cage through a crimping and drawing process. Because the specification length of the shaft tube is often different, the stroke adjustment range of the crimping and drawing equipment is required to be wide, the adjustment process is time-consuming and labor-consuming, and the condition that the crimping and drawing equipment cannot meet the requirement can also exist. This positioning and clamping device that this application provided can be to the spindle nose location clamp that will be assembled together with the ball cage, so, can press from both sides the spindle nose crimping and draw the assembly to the ball cage in earlier, this in-process because the length specification size of spindle nose changes little and whole size can not be too long, generally need not adjust the crimping equipment that draws or the scope of adjustment is very little, consequently can promote assembly efficiency greatly. In addition, the positioning and clamping device provided by the application is further improved in structure on the end part of the jaw mechanism, and by means of the arrangement of the clamping surface and the jacking surface, the jacking surface is utilized to bear upsetting thrust in the friction welding process, and the clamping surface is utilized to bear friction thrust in the friction welding process, so that the force of the required clamping force is reduced, and the risk of damaging the shaft head by the clamp is greatly reduced.
Optionally, the base is provided with three groups along circumference direction symmetry the slide rail, jaw mechanism is provided with three groups, and every group jaw mechanism corresponds set up in the slide rail.
Optionally, the base is provided with the frock board, the frock board is provided with the locating hole that supplies the locating pin that is used for the locating ball cage to pass.
Optionally, the positioning and clamping device further comprises an elastic supporting mechanism, wherein the elastic supporting mechanism comprises a connecting piece and an elastic piece arranged on the connecting piece; the bottom wall of the arc-shaped groove is provided with a mounting groove, the connecting piece is arranged in the mounting groove, and the elastic piece is configured to partially extend out of the mounting groove when the jaw mechanism is in the loosening position and to be compressed to be positioned in the mounting groove when the jaw mechanism is in the clamping position. Therefore, the elastic supporting structure can be used for supporting and positioning the connecting end of the shaft head far away from the chuck, and the shaft axis of the shaft head is prevented from deviating. And when the clamping jaw mechanism is needed to clamp and position the connecting end later, the clamping part moves and clamps on the connecting end under the driving action, and meanwhile, the elastic piece is compressed and shortened and is positioned in the mounting groove.
Optionally, the connecting piece is the connecting axle, the connecting axle through pivot rotation connect in the lateral wall of mounting groove, and be provided with the reset torsion spring between connecting axle and the lateral wall of mounting groove, the reset torsion spring is pressed in the connecting axle with the trend that makes the elastic component on the connecting axle have to be close to the clamping part. In the process of separating the ball cage assembly from the chuck after friction welding is completed, the connecting shaft is rotationally connected with the side wall of the mounting groove, so that the ball cage on the ball cage assembly can drive the elastic piece and the connecting shaft to rotate after touching the elastic piece, the automatic avoiding effect of the elastic supporting mechanism is realized, and the damage of the elastic supporting mechanism or the difficulty in taking out of the ball cage assembly after assembly is avoided.
Optionally, the elastic component includes the elastic axis and overlaps and locate the outer first spring of elastic axis, the elastic axis sets up perpendicularly on the connecting axle, and the length of elastic axis and first spring equals.
Optionally, a rigid mounting shaft is vertically arranged on the connecting shaft, the elastic piece is a second spring, the second spring is sleeved outside the rigid mounting shaft, and the rigid mounting shaft is positioned in the mounting groove.
Optionally, the driving mechanism includes: a power source provided to the chuck; a drive shaft penetrating the chuck and capable of moving in an axial direction under the drive of the power source; a shifting fork rotatably arranged in the chuck; the sliding block is arranged in the sliding rail in a sliding way and is fixedly connected with the body part; one end of the shifting fork is connected with the driving shaft, and the other end of the shifting fork is matched with the sliding block through the guide surface so as to drive the sliding block to slide along the sliding rail in the front-back movement process of the driving shaft.
Optionally, the shifting fork comprises a base body, a first shifting part and a second shifting part, wherein the first shifting part and the second shifting part are formed on the base body, the base body is rotationally connected to the chuck through a rotating shaft, and the axial direction of the rotating shaft is perpendicular to the axial direction of the driving shaft; the driving shaft is provided with a first groove, the end part of the first stirring part stretches into the first groove, the sliding block is provided with a second groove, the end part of the second stirring part stretches into the second groove, and the end part of the second stirring part is provided with a guide inclined plane or a guide cambered surface.
In addition, the present application also provides an assembling method for a ball cage assembly for assembling a ball cage, a shaft head and a shaft tube together, the assembling method comprising the steps of:
step S100: the spline end of the shaft head is pressed, drawn and installed into a ball cage;
step S200: positioning and clamping the shaft head assembled with the ball cage by using the positioning and clamping device for the ball cage assembly according to any one of the technical schemes;
step S300: and (3) aligning and contacting the end surface of the shaft tube with the end surface of the shaft head, and fixing the end surface of the shaft tube and the end surface of the shaft head through friction welding to obtain the ball cage assembly.
The assembly method provided by the application is similar to the above-mentioned beneficial effect reasoning process of the positioning and clamping device, and is not repeated here.
These features and advantages of the present application will be disclosed in more detail in the following detailed description and the accompanying drawings. The best mode or means of the present application will be described in detail with reference to the accompanying drawings, but is not limited to the technical solutions of the present application. In addition, these features, elements, and components are shown in plural in each of the following and drawings, and are labeled with different symbols or numerals for convenience of description, but each denote a component of the same or similar construction or function.
Drawings
The application is further described below with reference to the accompanying drawings:
FIG. 1 is a front view of a positioning and clamping device for a ball cage assembly in a released position of a jaw mechanism according to an embodiment of the present application;
FIG. 2 is a cross-sectional view of the positioning and clamping device of FIG. 1 taken along the direction A-A when the jaw mechanism is in the released position;
FIG. 3 is an enlarged schematic view of portion B of FIG. 2;
FIG. 4 is a front view of a positioning and clamping device for a ball cage assembly in a clamping position of a jaw mechanism according to an embodiment of the present application;
FIG. 5 is a cross-sectional view of the positioning and clamping device of FIG. 4 taken along the direction C-C when the jaw mechanism is in the clamped position;
FIG. 6 is a front view of the resilient support mechanism and the clamping portion;
fig. 7 is a side cross-sectional view of the resilient support mechanism and the clamping portion.
Wherein, 1 a chuck; 10, a tooling plate; 11 fitting grooves; a 12-axis rotation; a 2-jaw mechanism; 20 body parts; 200 avoiding grooves; 21 a clamping part; 210 arc-shaped grooves; 2100 clamping surface; 2101 pressing surface; 212 mounting slots; 3, a driving mechanism; 30 drive shafts; 300 a first groove; 31 shifting fork; 310 a substrate; 311 a first toggle part; a second toggle 312; 32 sliders; 320 a second groove; 4 an elastic supporting mechanism; 40 connecting shafts; 41 elastic shaft; 42 a first spring; 5, positioning pins; 6, a shaft head; a 60 connection end; 7 ball cages.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The examples in the embodiments are intended to be used for explaining the present application and are not to be construed as limiting the present application.
Reference in the specification to "one embodiment" or "an example" means that a particular feature, structure, or characteristic described in connection with the embodiment itself may be included in at least one embodiment disclosed herein. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment.
A first aspect of the present application provides a locating and clamping device for a ball cage assembly, as shown in fig. 1, 2, 3, 4 and 5, for locating and clamping a shaft head assembled with a ball cage. The positioning and clamping device comprises a chuck 1, a jaw mechanism 2 and a driving mechanism 3, wherein the chuck 1 comprises a base and a sliding rail (not shown in the figure) arranged on the base, the jaw mechanism 2 is arranged on the base and is arranged on the sliding rail in a sliding manner, and the driving mechanism 3 is arranged on the chuck 1 and is connected with the jaw mechanism 2 so as to drive the jaw mechanism 2 to move between a clamping position and a loosening position along the sliding rail. The jaw mechanism 2 in the present embodiment includes a body portion 20 connected to the driving mechanism 3 and a clamping portion 21 provided to the body portion 20, the body portion 20 being formed with a dodging groove 200, an inner wall of the dodging groove 200 having a space with an outer surface of the ball cage 7 when the jaw mechanism 2 is in a clamped position; the clamping portion 21 is provided with an arc-shaped groove 210, the bottom wall of the arc-shaped groove 210 forms a clamping surface 2100 and the side wall forms a pressing surface 2101, the clamping surface 2100 being configured to press against the outer circumferential surface of the connecting end 60 of the stub shaft 6 when the jaw mechanism 2 is in the clamped position, the pressing surface 2101 being configured to press against the rear end surface of the connecting end 60 of the stub shaft 6 when the jaw mechanism 2 is in the clamped position.
The inventor finds that the main reason that the assembly efficiency of the ball cage assembly is low at present is that in the prior art, the shaft head and the shaft tube are firstly subjected to friction welding, and then the shaft head and shaft tube structure obtained by welding is assembled to the ball cage through a crimping and drawing process. Because the specification length of the shaft tube is often different, the stroke adjustment range of the crimping and drawing equipment is required to be wide, the adjustment process is time-consuming and labor-consuming, and the condition that the crimping and drawing equipment cannot meet the requirement can also exist. This positioning and clamping device that this application provided can be to the spindle nose location clamp that will be assembled together with the ball cage, so, can press from both sides the spindle nose crimping and draw the assembly to the ball cage in earlier, this in-process because the length specification size of spindle nose changes little and whole size can not be too long, generally need not adjust the crimping equipment that draws or the scope of adjustment is very little, consequently can promote assembly efficiency greatly. In addition, the positioning and clamping device provided by the application is further improved in structure on the end part of the jaw mechanism 2, and by means of the clamping surface 2100 and the top pressing surface 2101, the top pressing surface 2101 is utilized to bear upsetting thrust in the friction welding process, and the clamping surface 2100 is utilized to bear friction thrust in the friction welding process, so that the force of the required clamping force is reduced, and the risk of damaging the shaft head of the clamp is greatly reduced.
The base in this embodiment is provided with three sets of slide rails along the circumferential direction symmetry, and jaw mechanism 2 is provided with three sets of to every group jaw mechanism 2 corresponds to set up in the slide rail. It is easy to understand that in alternative embodiments, the number of the sliding rails and the jaw mechanisms may be two or four or more, and theoretically, the greater the number of the jaw mechanisms, the better the clamping and positioning effect on the shaft head, but the manufacturing cost of the clamping and positioning device needs to be considered, so that the jaw mechanisms are preferably arranged into three groups.
In this embodiment, a tooling plate 10 is further provided on the base, and the tooling plate 10 is provided with positioning holes through which the positioning pins 5 for positioning the ball cage 7 pass. Since the clamp device in the related art is only used for clamping and fixing the shaft head, and does not consider the ball cage, the clamp device in the related art generally only directly clamps the shaft head by using the clamping jaws, and does not consider the positioning of the ball cage. The tool plate 10 is arranged on the base, positioning holes (not shown in the figure) are formed in the tool plate 10, the ball cage is placed in the corresponding through holes of the lugs on the ball cage to be aligned with the positioning holes during assembly, and the positioning pins 5 are used for being inserted to position the ball cage.
Because the shaft head and the ball cage are assembled and then subjected to friction welding in the application, compared with the operation in the related art, the structure obtained after the shaft head and the ball cage are assembled is longer in the axial direction, and the structure obtained after the shaft head and the ball cage are assembled is arranged on the clamping and positioning device provided by the application, the attention is paid to the fact that the axis of the shaft head and the center of the chuck 1 have higher overlap ratio. In order to avoid slight deflection of the connecting end 60 of the spindle nose 6, which is far from the chuck 1, under the action of gravity, the positioning and clamping device provided by the embodiment further comprises an elastic supporting mechanism 4, and the elastic supporting mechanism comprises a connecting piece and an elastic piece arranged on the connecting piece, as shown in fig. 6 and 7; the bottom wall of the arcuate recess 210 is provided with a mounting groove 212, and the connector is disposed within the mounting groove 212, the resilient member being configured to extend partially out of the mounting groove 212 when the jaw mechanism 2 is in the undamped position and to be compressed into position within the mounting groove 212 when the jaw mechanism 2 is in the clamped position.
Through the above arrangement, when the structure obtained after assembling the spindle nose 6 and the ball cage 7 together is arranged on the clamping and positioning device provided by the application, the ball cage 7 in the above structure is attached to the tooling plate 10 on the chuck 1 along the axial direction of the chuck 1, and then the positioning pin 5 is used for positioning the ball cage 7. At the same time, the elastic supporting structure is used for supporting and positioning the connecting end 60 of the spindle head 6 which is far away from the chuck 1. And when the jaw mechanism 2 is required to clamp and position the connecting end 60 later, the clamping part 21 moves and clamps on the connecting end 60 under the driving action, and the elastic member is compressed and shortened and is positioned in the mounting groove 212.
Further, the connecting member in the present application is a connecting shaft 40, the connecting shaft 40 is rotatably connected to a side wall of the mounting groove 212 through a pivot shaft, and a reset torsion spring is disposed between the connecting shaft 40 and the side wall of the mounting groove 212, so that the elastic member on the connecting shaft 40 has a tendency to approach the clamping portion 21 and presses the connecting shaft 40. When the assembled ball cage assembly is required to be taken out after friction welding is completed, the claw mechanism 2 is controlled to move to a loosening position through the driving mechanism 3, the positioning pin 5 is removed, and finally the ball cage assembly is separated relative to the chuck 1 along the axial direction. In the separation process of the ball cage assembly and the chuck 1, as the connecting shaft 40 is rotationally connected with the side wall of the mounting groove 212, the ball cage 7 on the ball cage assembly can drive the elastic piece and the connecting shaft 40 to rotate after touching the elastic piece, thereby realizing the effect of automatically avoiding the elastic supporting mechanism 4 and avoiding the damage of the elastic supporting mechanism 4 or leading to difficult removal of the ball cage assembly after the assembly is completed.
It is easy to understand that when the connecting shaft is designed to rotate relative to the side wall of the mounting groove, the elastic element is required to rotate outwards to avoid the ball 7 from entering when the structure obtained after the shaft head and the ball cage are assembled together is mounted on the chuck, and the elastic element is reset and rotated back after the ball cage enters, so that the elastic element plays a role in supporting and positioning the connecting end of the shaft head. In some alternative embodiments, the connecting shaft may be fixedly connected to the side wall of the mounting groove, in which case the elastic member may be compressed by an external workpiece to avoid the entry and exit of the ball cage.
The elastic member in this embodiment includes an elastic shaft 41 and a first spring 42 sleeved outside the elastic shaft 41, where the elastic shaft 41 is vertically disposed on the connecting shaft 40, and the lengths of the elastic shaft 41 and the first spring 42 are equal. On the one hand, when the clamping part 21 clamps the connecting end 60 of the shaft head 6, the elastic shaft 41 and the first spring 42 can be compressed, so that the clamping positioning is not influenced; on the other hand, the elastic shaft 41 ensures the assembly stability of the first spring 42, and prevents the first spring 42 from being separated from the connecting piece. The elastic shaft 41 may be made of rubber or other elastic polymer materials. In other alternative embodiments, the elastic member may also include only a spring structure, and in alternative embodiments, the elastic member is a second spring, a rigid mounting shaft is vertically disposed on the connecting shaft, the second spring is sleeved outside the rigid mounting shaft, and the rigid mounting shaft is located in the mounting groove. Therefore, the rigid mounting shaft is positioned in the mounting groove, the entering and exiting of the ball cage are not influenced, the clamping and positioning of the clamping part to the connecting end of the shaft head are not influenced, and meanwhile, the assembly of the second spring can be realized.
As shown in fig. 1, 2, 4 and 5, the driving mechanism 3 in the present embodiment includes a power source (not shown in the drawings), a drive shaft 30, a fork 31 and a slider 32. The power source is disposed in the chuck 1, the driving shaft 30 penetrates through the chuck 1 and can move axially under the driving of the power source, the shifting fork 31 is rotatably disposed in the chuck 1, and the sliding block 32 is slidably disposed in the sliding rail and fixedly connected with the body portion 20. One end of the shifting fork 31 is connected with the driving shaft 30, and the other end of the shifting fork is matched with the sliding block 32 through a guide surface so as to drive the sliding block 32 to slide along the sliding rail in the process of moving the driving shaft 30 back and forth. Specifically, a hydraulic cylinder or a motor may be selected as a power source, and a power output end of the power source is connected to the driving shaft 30, so that the driving shaft 30 can be driven to move along the axial direction of the driving shaft 30 relative to the chuck 1. The shifting fork 31 is rotatably arranged relative to the chuck 1, so that when the driving shaft 30 moves in the moving process to drive one end of the shifting fork 31, the shifting fork 31 integrally rotates, the other end of the shifting fork 31 drives the sliding block 32 to move, the rotation of the shifting fork 31 is converted into the linear movement of the sliding block 32 by utilizing the matching relation of the guide surfaces between the two, and the jaw mechanism 2 is driven to translate along the sliding rail.
The shift fork 31 in this embodiment includes a base 310, and a first shifting portion 311 and a second shifting portion 312 formed on the base 310, where the base 310 is rotatably connected to the chuck 1 through a rotating shaft 12, and correspondingly, an assembly groove 11 is provided on the chuck 1, and the rotating shaft 12 is rotatably provided on an inner wall of the assembly groove 11. The axial direction of the rotating shaft 12 is perpendicular to the axial direction of the driving shaft 30, and the effect to be achieved by the axial direction of the rotating shaft 12 perpendicular to the axial direction of the driving shaft 30 is that: when the driving shaft 30 moves back and forth along its own axis, the fork 31 is driven to rotate along the rotating shaft 12. The driving shaft 30 is provided with a first groove 300, the end part of the first stirring part 311 extends into the first groove 300, the sliding block 32 is provided with a second groove 320, the end part of the second stirring part 312 extends into the second groove 320, and the end part of the second stirring part 312 is provided with a guiding inclined plane or a guiding cambered surface. Thus, when the driving shaft 30 moves back and forth along its own axis, the inner wall of the first groove 300 acts on the end of the first poking part 311, and drives the poking fork 31 to rotate around the rotating shaft 12. Therefore, the end of the second stirring portion 312 acts on the inner wall of the second groove 320, and the sliding block 32 is slidably disposed in the sliding rail due to the cooperation of the guiding surfaces therebetween, so that the rotation motion of the end of the second stirring portion 312 is converted into the linear motion of the sliding block 32, and the jaw mechanism 2 is driven to realize the translation, so that the jaw mechanism 2 can be switched between the releasing position and the clamping position.
A second aspect of the present application provides an assembly method for a ball cage assembly for assembling together a ball cage, a shaft head and a shaft tube, the assembly method comprising the steps of:
step S100: the spline end of the shaft head is pressed, drawn and installed into a ball cage; in this step, the shaft head and the ball cage are assembled by using a press-fitting drawing process, which is not described here.
Step S200: applying the positioning and clamping device for the ball cage assembly provided by the first aspect of the application to position and clamp the shaft head assembled with the ball cage; in the step, the ball cage assembled together and the ball cage in the shaft head are positioned on the tooling plate through the positioning pin, and the shaft head is clamped by the clamping part.
Step S300: and (3) aligning and contacting the end surface of the shaft tube with the end surface of the shaft head, and fixing the end surface of the shaft tube and the end surface of the shaft head through friction welding to obtain the ball cage assembly.
When the assembling method is applied, the shaft head is firstly pressed, drawn and assembled into the ball cage, then the positioning and clamping device is utilized to position and clamp the shaft head assembled with the ball cage, and finally friction welding operation is carried out. Because the assembly operation of the shaft head and the ball cage is placed at the forefront, the length specification and the size of the shaft head are less in change and the whole size cannot be too long in the process, and the adjustment of crimping drawing equipment is generally not needed or the adjustment range is very small, so that the assembly efficiency can be greatly improved. Meanwhile, the top pressing surface on the clamping part is utilized to bear the upsetting thrust in the friction welding process, and the clamping surface on the clamping part is utilized to bear the friction thrust in the friction welding process, so that the strength of the required clamping force is reduced, and the risk of damaging the shaft head by the clamp is greatly reduced.
The foregoing is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and it should be apparent to those skilled in the art that the present application includes but is not limited to the accompanying drawings and what is described in the above specific embodiments. Any modifications which do not depart from the functional and structural principles of the present application are intended to be included within the scope of the claims.
Claims (7)
1. A positioning and clamping device for a ball cage assembly, for positioning and clamping a shaft head assembled with a ball cage, the positioning and clamping device comprising:
the chuck (1) comprises a base and a sliding rail arranged on the base;
the jaw mechanism (2) is arranged on the base and is arranged on the sliding rail in a sliding manner; the method comprises the steps of,
the driving mechanism (3) is arranged on the chuck (1) and connected with the jaw mechanism (2) so as to drive the jaw mechanism (2) to move between a clamping position and a loosening position along the sliding rail;
the clamping jaw mechanism (2) comprises a body part (20) connected with the driving mechanism (3) and a clamping part (21) arranged on the body part (20), wherein an avoidance groove (200) is formed in the body part (20), and a space is reserved between the inner wall of the avoidance groove (200) and the outer surface of the ball cage when the clamping jaw mechanism (2) is positioned at the clamping position;
the clamping part (21) is provided with an arc-shaped groove (210), the bottom wall of the arc-shaped groove (210) forms a clamping surface (2100) and the side wall forms a pressing surface (2101), the clamping surface (2100) is configured to be pressed against the outer peripheral surface of the connecting end of the shaft head when the jaw mechanism (2) is in the clamping position, and the pressing surface (2101) is configured to be pressed against the rear end surface of the connecting end of the shaft head when the jaw mechanism (2) is in the clamping position;
the positioning and clamping device further comprises an elastic supporting mechanism (4), wherein the elastic supporting mechanism (4) comprises a connecting piece and an elastic piece arranged on the connecting piece;
the bottom wall of the arc-shaped groove (210) is provided with a mounting groove (212), the connecting piece is arranged in the mounting groove (212), and the elastic piece is configured to partially extend out of the mounting groove (212) when the jaw mechanism (2) is in a loosening position and to be compressed into the mounting groove (212) when the jaw mechanism (2) is in a clamping position;
the connecting piece is a connecting shaft (40), the connecting shaft (40) is rotationally connected to the side wall of the mounting groove (212) through a pivot shaft, and a reset torsion spring is arranged between the connecting shaft (40) and the side wall of the mounting groove (212), and the reset torsion spring is used for enabling an elastic piece on the connecting shaft (40) to have a trend of approaching to the clamping part (21) to press the connecting shaft (40);
the base is provided with a tooling plate (10), and the tooling plate (10) is provided with a positioning hole for a positioning pin for positioning the ball cage to pass through.
2. Positioning and clamping device for a ball cage assembly according to claim 1, characterized in that the base is symmetrically provided with three groups of slide rails in the circumferential direction, the jaw mechanism (2) is provided with three groups, and each group of jaw mechanism (2) is correspondingly arranged on the slide rails.
3. A positioning and clamping device for a ball cage assembly according to claim 1, characterized in that the elastic member comprises an elastic shaft (41) and a first spring (42) sleeved outside the elastic shaft (41), the elastic shaft (41) is vertically arranged on the connecting shaft (40), and the length of the elastic shaft (41) is equal to that of the first spring (42).
4. A positioning and clamping device for a ball cage assembly as claimed in claim 1, characterized in that a rigid mounting shaft is vertically arranged on said connecting shaft (40), said elastic member is a second spring, said second spring is sleeved outside said rigid mounting shaft, and said rigid mounting shaft is located in said mounting groove (212).
5. A positioning and clamping device for a ball cage assembly according to claim 1, characterized in that said driving mechanism (3) comprises:
a power source provided to the chuck (1);
a drive shaft (30) which is provided so as to penetrate the chuck (1) and is capable of moving in the axial direction under the drive of the power source;
a fork (31) rotatably provided in the chuck (1); the method comprises the steps of,
a slider (32) slidably disposed in the slide rail and fixedly connected to the body (20);
one end of the shifting fork (31) is connected with the driving shaft (30), and the other end of the shifting fork is matched with the sliding block (32) through a guide surface, so that the sliding block (32) is driven to slide along the sliding rail in the forward and backward movement process of the driving shaft (30).
6. The positioning and clamping device for a ball cage assembly according to claim 5, characterized in that the fork (31) comprises a base body (310) and a first toggle part (311) and a second toggle part (312) formed on the base body (310), the base body (310) is rotatably connected to the chuck (1) through a rotating shaft (12), and the axial direction of the rotating shaft (12) is perpendicular to the axial direction of the driving shaft (30);
the driving shaft (30) is provided with a first groove (300), the end part of the first stirring part (311) stretches into the first groove (300), the sliding block (32) is provided with a second groove (320), the end part of the second stirring part (312) stretches into the second groove (320), and the end part of the second stirring part (312) is provided with a guiding inclined plane or a guiding cambered surface.
7. An assembly method for a ball cage assembly for assembling together a ball cage, a shaft head and a shaft tube, the assembly method comprising the steps of:
step S100: the spline end of the shaft head is pressed, drawn and installed into a ball cage;
step S200: positioning and clamping a shaft head assembled with a ball cage by using the positioning and clamping device for the ball cage assembly according to any one of claims 1 to 6;
step S300: and (3) aligning and contacting the end surface of the shaft tube with the end surface of the shaft head, and fixing the end surface of the shaft tube and the end surface of the shaft head through friction welding to obtain the ball cage assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311404871.5A CN117139820B (en) | 2023-10-27 | 2023-10-27 | Positioning and clamping device for ball cage assembly and assembly method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311404871.5A CN117139820B (en) | 2023-10-27 | 2023-10-27 | Positioning and clamping device for ball cage assembly and assembly method |
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| Publication Number | Publication Date |
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| CN117139820A CN117139820A (en) | 2023-12-01 |
| CN117139820B true CN117139820B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311404871.5A Active CN117139820B (en) | 2023-10-27 | 2023-10-27 | Positioning and clamping device for ball cage assembly and assembly method |
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| CN219599300U (en) * | 2023-02-27 | 2023-08-29 | 安徽企铭智能制造有限公司 | Assembling die for ball cage bearing snap ring |
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| CN1987038A (en) * | 2006-07-11 | 2007-06-27 | 陈月辉 | Automatic drilling machine for hand held water drill |
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| CN219599300U (en) * | 2023-02-27 | 2023-08-29 | 安徽企铭智能制造有限公司 | Assembling die for ball cage bearing snap ring |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117139820A (en) | 2023-12-01 |
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