CN117123810B - Machining positioning device for three-pin shaft universal joint and fixing method thereof - Google Patents
Machining positioning device for three-pin shaft universal joint and fixing method thereof Download PDFInfo
- Publication number
- CN117123810B CN117123810B CN202311404868.3A CN202311404868A CN117123810B CN 117123810 B CN117123810 B CN 117123810B CN 202311404868 A CN202311404868 A CN 202311404868A CN 117123810 B CN117123810 B CN 117123810B
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- universal joint
- base
- mandrel
- pin shaft
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000003754 machining Methods 0.000 title claims abstract description 15
- 238000003825 pressing Methods 0.000 claims description 48
- 230000007704 transition Effects 0.000 claims description 32
- 238000001514 detection method Methods 0.000 claims description 31
- 238000012545 processing Methods 0.000 claims description 14
- 238000009434 installation Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000009837 dry grinding Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B5/00—Turning-machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B25/00—Accessories or auxiliary equipment for turning-machines
- B23B25/06—Measuring, gauging, or adjusting equipment on turning-machines for setting-on, feeding, controlling, or monitoring the cutting tools or work
Abstract
The utility model discloses a machining and positioning device of a three-pin shaft universal joint and a fixing method thereof.
Description
Technical Field
The utility model belongs to the technical field of turning fixing tools, and particularly relates to a machining and positioning device and a fixing method of a three-pin shaft universal joint.
Background
The existing three-pin shaft universal joint is fixed in the turning process by means of pressing three V-shaped dies, the fixing mode can achieve the positioning and fixing effects of the three-pin shaft universal joint before the dies are not worn, but the V-shaped dies can be worn along with the increase of the machining quantity, the positioning accuracy of the three-pin shaft universal joint is reduced after the V-shaped dies are worn, the machining yield of the three-pin shaft universal joint is greatly reduced, and the size dispersion of qualified parts is large.
The utility model discloses a clamp for a cross shaft universal joint machining lathe, which comprises a base, four clamping blocks uniformly arranged on the base in a circumferential direction, a driving mechanism for driving the clamping blocks to be close to or far away from each other, wherein the surfaces of two adjacent clamping blocks close to each other are inclined planes with the bottom ends close to each other, sliding rods connected to the adjacent clamping blocks in a sliding mode are arranged on the clamping blocks, and the sliding rods are located at the bottom ends of the clamping blocks. The clamp structure has the defects that (1) rigid surface contact is adopted between the clamp and the surface of a workpiece, so that the machining error of the surface of the workpiece is easily accumulated on a universal joint pin shaft to be machined, and the machining precision of the workpiece is poor; (2) The clamp is easy to wear, so that the machining yield of the three-pin shaft universal joint is greatly reduced, and the size dispersion of qualified parts is large.
Disclosure of Invention
Aiming at the defects, the technical problem to be solved by the utility model is to provide a processing and positioning device and a fixing method of the three-pin shaft universal joint, which are used for improving the processing precision of the three-pin shaft universal joint.
In order to solve the technical problems, the utility model adopts the technical proposal that,
a processing and positioning device for a three-pin universal joint comprises
A base;
the pressing mechanism is used for pressing the tripod universal joint on the base;
the positioning mandrel is arranged on the base in a floating mode, and the three-pin shaft universal joint is fixedly positioned on the base through the positioning mandrel;
the clamping jaw mechanism is arranged on the base and is used for positioning the fixed angle of the three-pin shaft universal joint.
As a preferable scheme of the utility model, the positioning mandrel is fixed on the base in a clearance fit mode, so that the positioning mandrel swings and/or rises and falls relative to the base.
As a preferable scheme of the utility model, the outer side of the positioning mandrel is sleeved with a transition sleeve, the transition sleeve is fixed in the base, and the positioning mandrel is arranged in the transition sleeve in a clearance fit manner.
As a preferred embodiment of the utility model, the length of the positioning mandrel is at least twice the diameter.
As a preferable scheme of the utility model, the positioning mandrel comprises a floating shaft body and a positioning shaft body which are connected with each other, the positioning mandrel is arranged on the base through the floating shaft body, and the positioning shaft body is contacted with the three-pin shaft universal joint line so as to fix the three-pin shaft universal joint on the base.
As a preferable scheme of the utility model, a cushion block is arranged below the positioning mandrel so as to form an adjusting gap between the lower end face of the positioning mandrel body and the upper end face of the base.
As a preferable scheme of the utility model, the base is provided with the detection air hole, the detection air hole is arranged towards the bottom surface of the tripod shaft universal joint, and the positioning precision of the tripod shaft universal joint is detected by detecting the air tightness of the tripod shaft universal joint and the base through the detection air hole.
As a preferable scheme of the utility model, the base comprises a positioning support and a base, wherein the base is provided with a positioning groove, the positioning support is assembled on the base in a positioning way through the positioning groove, and the positioning mandrel is arranged on the positioning support in a lifting way.
As a preferable scheme of the utility model, the pressing mechanism comprises a pressing head and an air bag arranged in the pressing head, and the air bag extends out of the pressing head so as to grasp a workpiece through the pressing mechanism.
The fixing method of the three-pin shaft universal joint is based on the processing and positioning device of the three-pin shaft universal joint, and comprises the following steps of,
s1, moving a workpiece to the position above a positioning mandrel through a pressing mechanism;
s2, pre-pressurizing the workpiece through a pressing mechanism, and clamping and fixing one shaft of the workpiece through a clamping jaw mechanism;
s3, pressurizing the workpiece through a pressing mechanism;
s4, air is introduced into the detection air hole, air tightness detection is carried out, if the air tightness detection is qualified, the positioning and fixing of the three-pin shaft universal joint are finished, and if the air tightness detection is unqualified, the steps S1-S3 are repeated.
The clamping jaw mechanism has the beneficial effects that (1) the movement freedom degree of the workpiece in three directions and the rotation freedom degree of rotation around the horizontal plane are limited through the mandrel and the pressing mechanism, and then the vertical rotation freedom degree of the workpiece is limited through the clamping jaw mechanism 4, so that six freedom degree limitation of the workpiece is realized, and the clamping precision of the workpiece is ensured.
(2) Through the setting of floating type positioning mandrel, can adjust the position between work piece, the positioning mandrel at work piece pushing down the in-process, on the one hand can absorb the machining dimension error of work piece itself to make the location of work piece more accurate, on the other hand can guarantee that the terminal surface of work piece can laminate on the terminal surface of base completely, thereby improve the positioning accuracy on the work piece horizontal plane.
Drawings
Fig. 1 is a schematic structural view of the present processing positioning device.
Fig. 2 is a schematic view of the structure of fig. 1 after being rotated at a certain angle, in which the tripod joint is omitted.
Fig. 3 is a cross-sectional view of the tooling fixture at the positioning mandrel.
Fig. 4 is a partial enlarged view at a, and it should be noted that, in this illustration, the positioning mandrel and the transition sleeve show a larger gap for expressing the installation state of the positioning mandrel, and in the actual assembly process, the positioning mandrel and the transition sleeve are in transition fit.
Fig. 5 is a cross-sectional view of the pressing mechanism grabbing the tripod universal joint.
Reference numerals: the device comprises a base 1, a detection air hole 1-1, a positioning support 1-2, a base 1-3, a positioning groove 1-4, a lifting block 1-5, a cushion block groove 1-6, a ring groove 1-7, a pressing mechanism 2, a pressure head 2-1, an air bag 2-2, a positioning mandrel 3, a floating shaft 3-1, a positioning shaft 3-2, a clamping jaw mechanism 4, a clamping jaw bracket 4-1, a pneumatic clamping jaw 4-2, a cushion block 5, a tripod shaft universal joint 6-1, a universal joint main body 6-2, a pin shaft 6-3, a through hole 6-4, a round corner 6-4 and a workpiece positioning area 7.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
The machining positioning device for the three-pin shaft universal joint is fixed on a lathe and used for fixing the three-pin shaft universal joint 6 on the lathe in a transition mode, so that the lathe can conveniently machine the pin shaft 6-2 of the three-pin shaft universal joint, the clamping precision of the three-pin shaft universal joint is guaranteed through the machining positioning device, and the precision of turning of the pin shaft is improved.
As shown in fig. 1 and 2, the processing positioning device comprises a base 1, a pressing mechanism 2, a positioning mandrel 3 and a clamping jaw mechanism 4, wherein the positioning mandrel 3 is floatingly arranged on the base 1, a three-pin shaft universal joint 6 is positioned on the base 1 through the positioning mandrel 3, the pressing mechanism 2 is matched with the positioning mandrel 3 and is used for moving the three-pin shaft universal joint to the upper part of the positioning mandrel 3 and pressing the three-pin shaft universal joint on the base 1 against the floating force of the positioning mandrel 3, so that the three-pin shaft universal joint is positioned and fixed on the base 1 efficiently and accurately, a lathe is convenient to turn a pin shaft of the three-pin shaft universal joint, the clamping jaw mechanism 4 is arranged on the base 1, one pin shaft of the three-pin shaft universal joint is fixed through the clamping jaw mechanism 4, and therefore the fixed angle of the three-pin shaft universal joint is positioned, and when the three-pin shaft universal joint is subjected to radial cutting force in the turning process, the three-pin shaft universal joint is prevented from rotating relatively.
The positioning mandrel 3 is arranged on the base 1 in a floating manner, so that the positioning mandrel 3 can swing and lift up and down relative to the base 1, and in the swinging process of the positioning mandrel 3, a workpiece and the positioning mandrel 3 are ensured to be coaxially arranged, so that the workpiece is conveniently limited in a small range area on the base 1, and because a certain size error exists in the processing of the main body part of the positioning mandrel 3, the influence of the processing error of the main body part of the positioning mandrel 3 on the positioning precision of the device is reduced through the positioning mandrel 3 capable of swinging; in the process of lifting the positioning mandrel 3 up and down, the positioning mandrel 3 provides a reaction force for the workpiece, so that the position relationship between the workpiece axis and the positioning mandrel axis is convenient to adjust (the workpiece swings and the positioning mandrel swings until the workpiece swings and the positioning mandrel coaxially arrange) in the process of pressing the workpiece down through the pressing mechanism 2, and the workpiece is convenient to abut against the base 1, so that the coaxial arrangement of the workpiece axis and the positioning mandrel axis is ensured.
In order to be convenient for install the location dabber 3 floating on base 1, location dabber 3 passes through clearance fit's mode and connects in base 1, under the clearance fit state, there is certain tiny clearance between location dabber 3 and the base 1 to be convenient for the location dabber 3 swings relative to base 1, thereby be convenient for adjust the mounted position of location dabber 3 in the fixed in-process of work piece, thereby improve the positioning accuracy of work piece, can guarantee simultaneously that location dabber 3 can slide relative to base 1 again, prevent the location dabber 3 from floating up and down in-process, take place the life that dry grinding influences the part between location dabber 3, the base 1.
As shown in fig. 3 and 4, in this embodiment, a transition sleeve 4 is sleeved on the outer side of the positioning mandrel 3, the transition sleeve 4 is fixed in the base 1, preferably, the transition sleeve 4 and the base 1 are connected in an interference fit manner, so as to ensure the installation accuracy between the bases 1 of the transition sleeve 4, thereby installing the positioning mandrel 3 on the base 1 through the transition sleeve 4, installing the positioning mandrel 3 in the transition sleeve 4 in a clearance fit manner, and realizing the clearance fit between the positioning mandrel 3 and the base 1 through the clearance fit between the positioning mandrel 3 and the transition sleeve 4.
In this embodiment, transition cover 4 is graphite copper sheathing, and graphite copper sheathing is standard part low price and convenient purchase, reduces the part replacement cost, and the hardness of location dabber 3 is greater than the hardness of transition cover 4, and location dabber 3 adopts wear-resisting material, prevents that location dabber 3 from wearing and tearing take place in the use, and replaces base 1 to carry out the mode of wearing and tearing through transition cover 4 to reduce the maintenance cost of this device.
As shown in fig. 4, the positioning mandrel 3 comprises a floating shaft body 3-1 and a positioning shaft body 3-2 which are connected with each other, the positioning mandrel 3 is installed on the transition sleeve 4 through the floating shaft body 3-1, the positioning shaft body 3-2 is located on the upper end face of the base 1, and the positioning mandrel 3-2 is abutted with the workpiece, so that the workpiece can float along with the positioning mandrel 3.
As shown in fig. 5, the tripod shaft universal joint 6 to be positioned and fixed by the device comprises a universal joint main body 6-1 and three pin shafts 6-2, wherein the three pin shafts 6-2 are uniformly connected to the side wall of the universal joint main body 6-1, through holes 6-3 are formed in the universal joint main body 6-1, the inner walls of the through holes 6-3 and the end faces of the universal joint main body 6-1 are transited through round corners 6-4, in order to improve the connection precision between the positioning shaft body 3-2 and the tripod shaft universal joint 6, the positioning shaft body 3-2 adopts a round platform structure, the diameter of the upper end face of the positioning shaft body 3-2 is smaller than the inner diameter of the through holes 6-3, the diameter of the lower end face of the positioning shaft body 3-2 is larger than the inner diameter of the through holes 6-3 and smaller than the maximum diameter of the round corners 6-4, so that the bottom edge of the round corners of the positioning shaft body 3-2 is abutted against the round corners 6-4, the positioning shaft body 3-2 is contacted with the tripod shaft universal joint 6 in a line mode, the tripod shaft joint is positioned and fixed on the base 1, and the contact area between the positioning shaft body 3-2 and the tripod shaft universal joint 6 is reduced, so that the influence on the positioning error of the positioning shaft 6 on a workpiece of the universal joint is reduced.
In order to reduce the swing amplitude of the positioning mandrel 3 in the transition sleeve 4 and further ensure the positioning precision in the plane direction (XY direction) of the workpiece, the length of the floating shaft body 3-1 is at least twice as long as the diameter of the floating shaft body, and by increasing the length of the floating shaft body 3-1, the swing amplitude of the floating shaft body 3-1 in the transition sleeve 4 is reduced, so that the positioning mandrel 3 can swing and the installation precision of the positioning mandrel 3 is ensured; in order to further reduce the swing amplitude of the positioning mandrel 3 in the transition sleeve 4, the length of the transition sleeve 4 needs to be ensured to be larger than that of the floating shaft body 3-1 while the length of the floating shaft body 3-1 is ensured; the swing error of the positioning mandrel 3 is ensured to be within 0.02mm through the longer floating shaft body 3-1 and the transition sleeve 4.
In order to facilitate the positioning mandrel 3 to float up and down, a cushion block 5 is arranged in a through hole of the transition sleeve 4, so that the cushion block 5 is arranged below the positioning mandrel 3, an adjusting gap is formed between the lower end face of the positioning mandrel 3-2 and the upper end face of the base 1 through the arrangement of the cushion block 5, the width of the adjusting gap is 2mm, and the positioning mandrel 3 can float up and down relative to the base 1 through the arrangement of the adjusting gap; in the process of overcoming the reaction force of the cushion block 5 to drive the positioning mandrel 3 to descend, the relative positions of the workpiece and the positioning mandrel 3 are adjusted so as to improve the positioning accuracy of the positioning mandrel 3, preferably, the cushion block 5 is of a columnar structure and is arranged in the transition sleeve 4, the cushion block 5 is a polyurethane strip, the cushion block 5 provides flexible buffering in the process of pressing down the positioning mandrel 3, and a larger reaction force can be provided upwards to enable the axis of the three-pin shaft universal joint 6 and the axis of the positioning mandrel to be aligned to the same straight line.
As shown in fig. 2, the base 1 comprises a positioning support 1-2 and a base 1-3, the base 1-3 is provided with a positioning groove 1-4, the positioning support 1-2 is assembled on the base 1-3 in a positioning way through the positioning groove 1-4, and the transition sleeve 4 is fixed on the positioning support 1-2, so that the positioning mandrel 3 can be installed on the positioning support 1-2 in a lifting way, and in the installation process of the positioning support 1-2, the positioning support 1-2 is positioned through the inner walls of two vertical grooves of the positioning groove 1-4, so that the installation efficiency and the installation precision of the positioning support 1-2 are greatly improved; in order to enable the axis of the pin shaft 6-2 fixed on the positioning support 1-2 and the axis of the lathe spindle to be located on the same plane, a heightening block 1-5 is arranged in the positioning groove 1-4, a cushion block groove 1-6 is arranged in the heightening block 1-5, and the positioning support 1-2 is fixedly arranged on the heightening block 1-5 through the inner walls of the two vertical grooves of the cushion block groove 1-6.
When the device is used for positioning and fixing workpieces of different types, the positioning support 1-2, the positioning mandrel 3 and the transition sleeve 4 which are arranged on the positioning support 1-2 are replaced; when the transition sleeve 4 and the positioning mandrel 3 are worn, only the single part is required to be replaced, so that the convenience of replacing the part of the device is improved, and the maintenance cost of the device is reduced.
The upper end face of the positioning support 1-2 is provided with two ring grooves 1-7 taking the axis of the positioning mandrel 3 as the center of a circle, a workpiece positioning area 7 is formed between the ring grooves 1-7, when a workpiece is pressed on the positioning support 1-2 through the pressing mechanism 2, the lower end face of the workpiece is propped against the workpiece positioning area 7, a detection air hole 1-1 is arranged in the workpiece positioning area 7, the detection air hole 1-1 is arranged towards the bottom face of the three-pin shaft universal joint, the detection air hole 1-1 is connected with an external air passage, air is filled into the detection air hole 1-1 through the external air passage, so that the air pressure in the detection air hole 1-1 rises, and if the workpiece is positioned and installed in place, the detection air hole 1-1 is in a closed state, and the air pressure in the detection air hole 1-1 does not drop or has extremely small drop after a period of time; if the positioning and mounting precision of the workpiece has a large error, the detection air hole 1-1 is in a semi-closed state, and the air pressure in the detection air hole 1-1 is obviously reduced after a period of time, so that the vertical positioning precision of the three-pin shaft universal joint 6 and the base 1 is judged through the detection air hole 1-1, and the repeated positioning error of the three-pin shaft universal joint 6 can be ensured to be within the range of 0.01mm through the air tightness test.
The pressing mechanism 2 comprises a pressing head 2-1 connected with an external lifting mechanism and an air bag 2-2 arranged in the pressing head 2-1, the pressing head 2-1 is driven to move up and down through the external lifting mechanism, so that the three-pin shaft universal joint 6 is conveniently moved to the upper part of the positioning mandrel 3, the three-pin shaft universal joint 6 is propped against the workpiece positioning area 7 through the pressing mechanism 2 to perform air tightness test, the air bag 2-2 is arranged outside the pressing head 2-1, the part of the air bag 2-2, which is outside the pressing head 2-1, extends into the through hole 6-3, and the air bag 2-2 is pressurized through the air bag 2-2 to expand, so that friction force between the air bag 2-2 and the through hole 6-3 is increased, and the three-pin shaft universal joint 6 is grabbed.
In some preferred modes, the length of the air bag 2-2 extending out of the pressure head 2-1 can be properly adjusted according to the types of the tripod universal joints 6, so that the air bag 2-2 can fix the tripod universal joints 6 with different types, and preferably, the length of the air bag 2-2 extending into the through hole 6-3 is three fifths of the depth of the through hole 6-3, so that the air bag 2-2 can stably fix the tripod universal joints 6 on the pressing mechanism 2.
The clamping jaw mechanism 4 comprises a clamping jaw support 4-1 and a pneumatic clamping jaw 4-2, the pneumatic clamping jaw 4-2 is fixed on the base 1-3 through the clamping jaw support 4-1, the clamping precision of the clamping jaw mechanism 4 is guaranteed through guaranteeing the angle precision between the clamping jaw support 4-1 and a lathe spindle, the axis of a pin shaft 6-2 to be turned is guaranteed to be parallel to the axis of the lathe spindle, one pin shaft 6-2 of the three-pin shaft universal joint 6 is clamped through the pneumatic clamping jaw 4-2, and therefore the limitation of the vertical rotation freedom degree of the three-pin shaft universal joint 6 is achieved.
The fixing method of the three-pin shaft universal joint is based on the processing and positioning device of the three-pin shaft universal joint, and a workpiece is mounted on a lathe body in a transitional manner through the processing and positioning device, so that a power tool part of the lathe is convenient for turning a pin shaft 6-2,
s1, moving a workpiece to the position above a positioning mandrel 3 through a pressing mechanism 2, specifically, firstly moving the pressing mechanism 2 to the position where the workpiece is stacked, downwards moving the pressing mechanism 2 to extend an air bag 2-2 into a through hole 6-3 of a three-pin shaft universal joint, expanding the air bag 2-2 to enable the workpiece to be connected with the air bag 2-2, and moving the three-pin shaft universal joint 6 to the position above the positioning mandrel 3 through the pressing mechanism 2;
s2, pre-pressurizing a workpiece through a pressing mechanism 2, clamping and fixing one shaft of the workpiece by a clamping jaw mechanism 4, specifically, moving the pressing mechanism 2 downwards, so that the three-pin shaft universal joint is positioned above a mandrel 3, and a certain downward pressure is provided for the three-pin shaft universal joint through the pressing mechanism 2, so that the three-pin shaft universal joint is ensured to be contacted with the upper end surface of a base 1, and when the pneumatic clamping jaw 4-2 clamps the pin shaft 6-2, the axis of the pin shaft 6-2 and the clamping center of the pneumatic clamping jaw 4-2 are on the same plane, so that the clamping precision of the pneumatic clamping jaw 4-2 for clamping the pin shaft 6-2 is improved;
s3, pressurizing the workpiece through the pressing mechanism 2; specifically, after the pneumatic clamping jaw 4-2 limits the vertical rotation freedom degree of the three-pin shaft universal joint, the pressing mechanism 2 applies larger pressure to the three-pin shaft universal joint, and the influence of the surface roughness of the three-pin shaft universal joint on the air tightness detection is eliminated by applying larger pressure, so that the end face of the three-pin shaft universal joint is ensured to be attached to the workpiece positioning area 7;
s4, the air tightness detection is carried out by pressurizing the detection air hole 1-1, the air tightness detection is qualified, the positioning and fixing of the three-pin shaft universal joint are finished, the air tightness detection is unqualified, the steps S1-S3 are repeated, the clamping position of the workpiece is adjusted by repeatedly carrying out flexible clamping on the workpiece, so that the positioning accuracy of the three-pin shaft universal joint is ensured, and when the air tightness detection is unqualified for a plurality of times, the three-pin shaft universal joint to be processed needs to be replaced.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model; thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the terms corresponding to the reference numerals in the drawings are used more herein, the possibility of using other terms is not excluded; these terms are used merely for convenience in describing and explaining the nature of the utility model; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present utility model.
Claims (6)
1. The utility model provides a processing positioner of three round pin axle universal joint which characterized in that includes
A base (1);
the pressing mechanism (2) is used for pressing the three-pin shaft universal joint on the base (1);
the positioning mandrel (3) is arranged on the base (1) in a floating mode, and the three-pin universal joint is fixedly positioned on the base (1) through the positioning mandrel (3);
the clamping jaw mechanism (4) is arranged on the base (1), and the fixed angle of the three-pin shaft universal joint is positioned through the clamping jaw mechanism (4);
the positioning mandrel (3) is fixed on the base (1) in a clearance fit mode, so that the positioning mandrel (3) swings and/or lifts up and down relative to the base (1);
the outer side of the positioning mandrel (3) is sleeved with a transition sleeve (4), the transition sleeve (4) is fixed in the base (1), and the positioning mandrel (3) is arranged in the transition sleeve (4) in a clearance fit manner;
the length of the positioning mandrel (3) is at least twice the diameter;
the positioning mandrel (3) comprises a floating shaft body (3-1) and a positioning shaft body (3-2) which are connected with each other, the positioning mandrel (3) is arranged on the base (1) through the floating shaft body (3-1), and the positioning shaft body (3-2) is in line contact with the tripod universal joint so as to fix the tripod universal joint on the base (1);
the three-pin shaft universal joint (6) comprises a universal joint main body (6-1) and three pin shafts (6-2), wherein the three pin shafts (6-2) are connected to the side wall of the universal joint main body (6-1), a through hole (6-3) is formed in the universal joint main body (6-1), the inner wall of the through hole (6-3) and the end face of the universal joint main body (6-1) are in transition through a round corner (6-4), the positioning shaft body (3-2) adopts a round table structure, the diameter of the upper end face of the positioning shaft body (3-2) is smaller than the inner diameter of the through hole (6-3), and the diameter of the lower end face of the positioning shaft body (3-2) is larger than the inner diameter of the through hole (6-3) and smaller than the maximum diameter of the round corner (6-4).
2. The processing and positioning device of the three-pin universal joint according to claim 1, wherein a cushion block (5) is arranged below the positioning mandrel (3) so as to form an adjusting gap between the lower end face of the positioning mandrel body (3-2) and the upper end face of the base (1).
3. The machining positioning device for the tripod universal joint according to claim 1, wherein the base (1) is provided with a detection air hole (1-1), the detection air hole (1-1) is arranged towards the bottom surface of the tripod universal joint, and the positioning precision of the tripod universal joint is detected by detecting the air tightness of the tripod universal joint and the base (1) through the detection air hole (1-1).
4. The processing and positioning device of the three-pin universal joint according to claim 1, wherein the base (1) comprises a positioning support (1-2) and a base (1-3), a positioning groove (1-4) is formed in the base (1-3), the positioning support (1-2) is assembled on the base (1-3) in a positioning way through the positioning groove (1-4), and the positioning mandrel (3) is installed on the positioning support (1-2) in a lifting way.
5. The processing and positioning device of the three-pin universal joint according to claim 1, wherein the pressing mechanism (2) comprises a pressing head (2-1) and an air bag (2-2) arranged in the pressing head (2-1), and the air bag (2-2) extends out of the pressing head (2-1) so as to grasp a workpiece through the pressing mechanism (2).
6. A method for fixing a tripod joint is characterized in that the fixing method is based on the machining and positioning device of the tripod joint according to any one of claims 1 to 5, and comprises the following steps,
s1, moving a workpiece to the position above a positioning mandrel (3) through a pressing mechanism (2);
s2, pre-pressurizing the workpiece through the pressing mechanism (2), and clamping and fixing one shaft of the workpiece through the clamping jaw mechanism (4);
s3, pressurizing the workpiece through a pressing mechanism (2);
and S4, introducing air into the detection air hole (1-1) to perform air tightness detection, wherein if the air tightness detection is qualified, the positioning and fixing of the three-pin shaft universal joint are finished, and if the air tightness detection is unqualified, the steps S1-S3 are repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311404868.3A CN117123810B (en) | 2023-10-27 | 2023-10-27 | Machining positioning device for three-pin shaft universal joint and fixing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311404868.3A CN117123810B (en) | 2023-10-27 | 2023-10-27 | Machining positioning device for three-pin shaft universal joint and fixing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117123810A CN117123810A (en) | 2023-11-28 |
| CN117123810B true CN117123810B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311404868.3A Active CN117123810B (en) | 2023-10-27 | 2023-10-27 | Machining positioning device for three-pin shaft universal joint and fixing method thereof |
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| CN (1) | CN117123810B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5226636A (en) * | 1992-06-10 | 1993-07-13 | International Business Machines Corporation | Holding fixture for substrates |
| JPH05269679A (en) * | 1991-06-17 | 1993-10-19 | Kanto Auto Works Ltd | Clip driving device |
| US5911301A (en) * | 1997-02-12 | 1999-06-15 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for fixing boots of a constant velocity joint assembly and apparatus for positioning the joint assembly for use therein |
| CN202240736U (en) * | 2011-09-06 | 2012-05-30 | 杭州迈特汽车配件有限公司 | Full-automatic trigeminal shaft cardan cylindrical grinder |
| CN103084899A (en) * | 2013-03-06 | 2013-05-08 | 中核（天津）机械有限公司 | Motor stator lathing clamp |
| CN204673476U (en) * | 2015-05-06 | 2015-09-30 | 林中尉 | Constant force is floated power head mechanism |
| CN205996221U (en) * | 2016-08-30 | 2017-03-08 | 津上精密机床（浙江）有限公司 | A kind of lathe air tightness detection apparatus |
| CN210119322U (en) * | 2019-04-30 | 2020-02-28 | 万向钱潮股份有限公司 | Device for detecting sealing performance of maintenance type universal joint |
| CN211805649U (en) * | 2019-11-25 | 2020-10-30 | 郑州瑞盛德机械设备有限公司 | Ball head universal joint positioning and clamping mechanism |
| CN212004013U (en) * | 2019-12-24 | 2020-11-24 | 万向钱潮传动轴有限公司 | Heavy universal joint press mounting structure |
| CN212123048U (en) * | 2020-04-02 | 2020-12-11 | 吉林世宝机械制造有限公司 | Universal joint fork positioning tool |
| CN212419673U (en) * | 2020-06-24 | 2021-01-29 | 杭州南统轴承有限公司 | Clamp for cross-axle universal joint machining lathe |
| CN214080267U (en) * | 2020-12-31 | 2021-08-31 | 杭州明任机械有限公司 | Auxiliary fixing device for three-fork universal joint |
| CN214237708U (en) * | 2020-12-09 | 2021-09-21 | 马鞍山市恒永利机械科技有限公司 | Fixing device is used in processing of three pin shaft type universal joints |
| CN218427027U (en) * | 2022-10-26 | 2023-02-03 | 浙江博盈机械有限公司 | Mounting fixture frock of universal joint processing usefulness |
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2023
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH05269679A (en) * | 1991-06-17 | 1993-10-19 | Kanto Auto Works Ltd | Clip driving device |
| US5226636A (en) * | 1992-06-10 | 1993-07-13 | International Business Machines Corporation | Holding fixture for substrates |
| US5911301A (en) * | 1997-02-12 | 1999-06-15 | Honda Giken Kogyo Kabushiki Kaisha | Apparatus for fixing boots of a constant velocity joint assembly and apparatus for positioning the joint assembly for use therein |
| CN202240736U (en) * | 2011-09-06 | 2012-05-30 | 杭州迈特汽车配件有限公司 | Full-automatic trigeminal shaft cardan cylindrical grinder |
| CN103084899A (en) * | 2013-03-06 | 2013-05-08 | 中核（天津）机械有限公司 | Motor stator lathing clamp |
| CN204673476U (en) * | 2015-05-06 | 2015-09-30 | 林中尉 | Constant force is floated power head mechanism |
| CN205996221U (en) * | 2016-08-30 | 2017-03-08 | 津上精密机床（浙江）有限公司 | A kind of lathe air tightness detection apparatus |
| CN210119322U (en) * | 2019-04-30 | 2020-02-28 | 万向钱潮股份有限公司 | Device for detecting sealing performance of maintenance type universal joint |
| CN211805649U (en) * | 2019-11-25 | 2020-10-30 | 郑州瑞盛德机械设备有限公司 | Ball head universal joint positioning and clamping mechanism |
| CN212004013U (en) * | 2019-12-24 | 2020-11-24 | 万向钱潮传动轴有限公司 | Heavy universal joint press mounting structure |
| CN212123048U (en) * | 2020-04-02 | 2020-12-11 | 吉林世宝机械制造有限公司 | Universal joint fork positioning tool |
| CN212419673U (en) * | 2020-06-24 | 2021-01-29 | 杭州南统轴承有限公司 | Clamp for cross-axle universal joint machining lathe |
| CN214237708U (en) * | 2020-12-09 | 2021-09-21 | 马鞍山市恒永利机械科技有限公司 | Fixing device is used in processing of three pin shaft type universal joints |
| CN214080267U (en) * | 2020-12-31 | 2021-08-31 | 杭州明任机械有限公司 | Auxiliary fixing device for three-fork universal joint |
| CN218427027U (en) * | 2022-10-26 | 2023-02-03 | 浙江博盈机械有限公司 | Mounting fixture frock of universal joint processing usefulness |
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|---|---|
| CN117123810A (en) | 2023-11-28 |
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