CN117928336B - Hole position error detection device for casing casting of automobile gearbox - Google Patents
Hole position error detection device for casing casting of automobile gearboxInfo
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- CN117928336B CN117928336B CN202410327299.5A CN202410327299A CN117928336B CN 117928336 B CN117928336 B CN 117928336B CN 202410327299 A CN202410327299 A CN 202410327299A CN 117928336 B CN117928336 B CN 117928336B
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- 238000001514 detection method Methods 0.000 title claims abstract description 34
- 238000005266 casting Methods 0.000 title claims abstract description 20
- 230000007704 transition Effects 0.000 claims abstract description 14
- 230000005540 biological transmission Effects 0.000 claims description 10
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000005259 measurement Methods 0.000 abstract description 9
- 238000003825 pressing Methods 0.000 abstract description 9
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 7
- 239000012634 fragment Substances 0.000 description 6
- 238000005299 abrasion Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 4
- 230000002035 prolonged effect Effects 0.000 description 4
- 238000003754 machining Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Abstract
The invention provides a hole position error detection device for a casing casting of an automobile gearbox, and belongs to the technical field of automobile casting detection; the device comprises a positioning clamp for clamping and positioning a gearbox shell, wherein one side of the positioning clamp, which is far away from the gearbox shell, is provided with a plurality of measuring components for measuring the hole position deviation of a hole to be measured at the bottom of the gearbox shell; the positioning fixture comprises a support plate. According to the invention, the cap is pressed down until the outer edge of the inner ring of the hole to be measured is abutted against the outer ring of any one of the second measuring part, the first measuring part, the third measuring part, the transition area or the limiting table, the measuring rod is coaxial with the hole to be measured, meanwhile, the measuring rod is influenced by the reaction force of the hole to be measured, the sliding block and the sliding ring are driven to move along the plane of the connecting table through the connecting sleeve, the specific value of the hole position deviation can be known by reading the first scale marks corresponding to the edges of the sliding block after the pressing down is stopped, and the convenience of hole position deviation measurement is improved.
Description
Technical Field
The invention relates to the technical field of automobile casting detection, in particular to an automobile gearbox casing casting hole position error detection device.
Background
The hole site machining precision requirement of the cast product of the automobile gearbox shell is high, the cast product is usually cast and molded, and then secondary machining molding is carried out, and certain position deviation can be generated in the secondary machining process of the hole site, so that the quality of the product is influenced, and therefore, a hole site error detection device is needed for detection.
For example, chinese patent publication No. CN106352753B discloses a hole site detection tool for die castings of gear box shells, which is used for detecting the hole site of the gear box shells by positioning the gear box shells on a detection tool and inserting a detection pin into a hole corresponding to a product through a guide hole corresponding to a detection plate, wherein the detection pin can pass through the specification that the product meets the requirements, if the detection pin can not pass through, the specification that the corresponding hole of the product has deviation and exceeds the tolerance requirement, and the product is not qualified.
Disclosure of Invention
The invention aims to solve the technical problem of providing an automobile gearbox casing casting hole position error detection device for solving the problem in the prior art.
In order to solve the technical problems, the invention provides the following technical scheme:
The device for detecting the hole position error of the casting of the automobile gearbox shell comprises a positioning clamp for clamping and positioning the gearbox shell, wherein one side of the positioning clamp, which is far away from the gearbox shell, is provided with a plurality of measuring components for measuring the hole position deviation of a hole to be measured at the bottom of the gearbox shell; the positioning fixture comprises a supporting plate, and a plurality of first measuring holes corresponding to holes to be measured at the bottom of the gearbox shell are formed in the supporting plate.
Preferably, the measuring part comprises a connecting table arranged on one side of the supporting plate far away from the gearbox shell, a first through hole penetrating through the connecting table is formed in the middle of the connecting table, a connecting sleeve penetrating through the first through hole is sleeved in the first through hole, a sliding block and a sliding ring are detachably connected to the connecting sleeve, the sliding block and the sliding ring are used for clamping the connecting table and enable the connecting sleeve to slide along the plane of the connecting table, a measuring rod for measuring the aperture of a hole to be measured is sleeved in the connecting sleeve in a sliding manner, the axis of the measuring rod is parallel to the axis of the hole to be measured, a cap is arranged at one end of the measuring rod far away from the positioning clamp, a spring sleeved outside the measuring rod is arranged on the cap, one end of the spring far away from the cap is connected with the connecting sleeve, the sliding block is rectangular, four groups of first scale marks are uniformly distributed on the surface of one side of the connecting table far away from the supporting plate along the circumference, and the corresponding first scale marks are parallel to the edges of the sliding block.
Preferably, the measuring rod comprises a first measuring part with the same outer diameter as that of the Kong Gongchen to be measured, a second measuring part with the same lower limit size as that of the Kong Gongchen to be measured, and a third measuring part with the same upper limit size as that of the hole to be measured, wherein the third measuring part is positioned on one side of the first measuring part far away from the measuring part, the second measuring part is positioned on one side of the first measuring part near the measuring part, a truncated cone-shaped transition area for transition is arranged between the second measuring part, the first measuring part and the third measuring part, a round hole is formed in one side of the second measuring part near the measuring part, a limiting table is arranged on one side of the third measuring part far away from the transition area, the limiting table is in a truncated cone shape, and the minimum diameter of the limiting table is the same as that of the third measuring part, and one side of the limiting table far away from the third measuring part is outwards expanded.
Preferably, four sides of the sliding block are provided with first straight surfaces, and one side of the first straight surfaces, which is far away from the connecting table, is inclined to the position, which is close to the axis of the measuring rod.
Preferably, the first straight surface is provided with an indication block, four groups of second scale marks are uniformly distributed on the surface of one side, far away from the supporting plate, of the connecting table along the circumference, the second scale marks are located on one side, close to the first through hole, of the first scale marks, and the second scale marks are parallel to the side of the sliding block.
Preferably, the connecting sleeve is provided with a groove at the position corresponding to the inner ring of the first through hole, a plurality of second straight surfaces are uniformly arranged on the side wall of the groove in a circumferential manner, a plurality of elastic pieces are uniformly arranged in the first through hole in a circumferential manner, the elastic pieces are in collision with the second straight surfaces, and the position of the elastic pieces in collision with the second straight surfaces is in straight arrangement.
Preferably, the four corners of one side of the sliding block, which is close to the connecting table, are respectively sleeved with balls in a rotating way.
Preferably, the slip ring is screwed with the connecting sleeve.
Preferably, a plurality of adjusting holes are formed in the outer side of the slip ring.
Preferably, a positioning column matched with the gearbox shell to be tested is mounted on the supporting plate, a limiting ring used for limiting the top of the gearbox shell to be tested is mounted on the positioning column, and a plurality of positioning blocks used for limiting the edge position of the bottom of the gearbox shell to be tested are mounted on the supporting plate.
Preferably, the engaging lug is installed to the relative both sides of backup pad, the backup pad passes through the engaging lug and detects the frock mount table and rotates to be connected, detects to be provided with the spacing part that restricts engaging lug turned angle on the frock mount table.
Preferably, one side of the slip ring, which is close to the connecting table, is rotatably sleeved with a plurality of balls, and the balls move along the surface of the connecting table outside the first through hole.
Compared with the prior art, the invention has at least the following beneficial effects:
In the scheme, the cover cap is pressed until the outer edge of the inner ring of the hole to be measured is in conflict with the outer ring of any one of the second measuring part, the first measuring part, the third measuring part, the transition area or the limiting table, at the moment, the measuring rod is coaxial with the hole to be measured, and meanwhile, the measuring rod is influenced by the reaction force of the hole to be measured, drives the sliding block and the sliding ring to move along the plane of the connecting table through the connecting sleeve, and after the pressing is stopped by reading, the specific value of the hole position deviation can be known by the first scale marks corresponding to the edges of the sliding block, so that the convenience of hole position deviation measurement is improved.
Through seting up the recess, improve the range of motion of connecting sleeve along the direction of connection platform plane, improve the compactibility of its structure, through setting up the shell fragment for the measuring stick is under non-detection state, and a plurality of shell fragments can be under the effect of self elasticity, make the connecting sleeve reset through the conflict with the recess, through the conflict of shell fragment and second plane, make the slider that is connected with the adapter sleeve under the state of resetting keep correct gesture, so that its use in the measurement process.
The sliding friction generated by the sliding blocks is avoided when the sliding blocks slide along the plane of the connecting table through the balls, abrasion of the sliding blocks and the connecting table is caused, the service life of the sliding blocks is guaranteed, meanwhile, when the sliding blocks are effectively prevented from moving by the balls arranged at four corners, abrasion caused by the first scale line and the second scale line is improved, the service life of the sliding blocks is prolonged, and the accuracy of reading hole position error values at the bottom of a gearbox housing is guaranteed.
Drawings
FIG. 1 is a schematic perspective view of an automobile transmission housing casting hole position error detection device in an assembled state;
FIG. 2 is a schematic perspective view of a hole position error detection device for a casing casting of an automobile transmission;
FIG. 3 is a schematic perspective view of a measuring part;
FIG. 4 is a schematic perspective view of a connecting table;
FIG. 5 is a schematic perspective view of a measuring rod;
FIG. 6 is a schematic perspective view of a measuring rod assembly connection sleeve;
FIG. 7 is a schematic perspective view of a connecting sleeve;
FIG. 8 is a schematic perspective view of a slider;
Fig. 9 is a schematic perspective view of a slip ring.
Reference numerals: 1. positioning a clamp; 2. a measuring part; 3. a support plate; 4. positioning columns; 5. a limiting ring; 6. a positioning block; 7. a first measurement aperture; 8. a connecting lug; 9. a connection station; 10. a first through hole; 11. a connecting sleeve; 12. a groove; 13. a spring; 14. a measuring rod; 15. a slide block; 16. a first planar surface; 17. a first scale line; 18. a second graduation mark; 19. a spring plate; 20. a second plane; 21. capping; 22. an indication block; 23. a slip ring; 24. a ball; 25. an adjustment aperture; 26. a first measuring section; 27. a transition zone; 28. a second measuring section; 29. a third measuring section; 30. and a limiting table.
While particular structures and devices are shown in the drawings to enable a clear implementation of embodiments of the invention, this is for illustrative purposes only and is not intended to limit the invention to the particular structures, devices and environments, which may be modified or adapted by those of ordinary skill in the art, as desired, and which remain within the scope of the appended claims.
Detailed Description
The invention provides a hole position error detection device for a casing casting of an automobile gearbox, which is described in detail below with reference to the accompanying drawings and specific embodiments. While the invention has been described herein in terms of the preferred and preferred embodiments, the following embodiments are intended to be more illustrative, and may be implemented in many alternative ways as will occur to those of skill in the art; and the accompanying drawings are only for the purpose of describing the embodiments more specifically and are not intended to limit the invention specifically.
As shown in fig. 1 to 9, the embodiment of the invention provides an automobile gearbox casing casting hole position error detection device, which comprises a positioning clamp 1 for clamping and positioning a gearbox casing, wherein one side of the positioning clamp 1 away from the gearbox casing is provided with a plurality of measuring parts 2 for measuring the hole position deviation of a hole to be measured at the bottom of the gearbox casing; the positioning fixture 1 comprises a supporting plate 3, and a plurality of first measuring holes 7 corresponding to holes to be measured at the bottom of the gearbox shell are formed in the supporting plate 3; the measuring part 2 comprises a connecting table 9 arranged on one side of the supporting plate 3 far away from the gearbox shell, a first through hole 10 penetrating through the connecting table 9 is formed in the middle of the connecting table 9, a connecting sleeve 11 penetrating through the first through hole 10 is sleeved in the first through hole 10, a sliding block 15 and a sliding ring 23 are detachably connected to the connecting sleeve 11, the sliding block 15 and the sliding ring 23 are used for clamping the connecting table 9 and enabling the connecting sleeve 11 to slide along the plane of the connecting table 9, a measuring rod 14 for measuring the aperture of a hole to be measured is sleeved in the connecting sleeve 11 in a sliding manner, the axis of the measuring rod 14 is parallel to the axis of the hole to be measured, a cover cap 21 is arranged at one end of the measuring rod 14 far away from the positioning clamp 1, a spring 13 sleeved outside the measuring rod 14 is arranged on the cover cap 21, one end of the spring 13 far away from the cover cap 21 is connected with the connecting sleeve 11, the sliding block 15 is rectangular, four groups of first scale marks 17 are uniformly distributed on the surface of one side of the connecting table 9 far away from the supporting plate 3 along a circumference, the corresponding first scale marks 17 are parallel to the edges of the sliding block 15, and normally, the four groups of first scale marks 17 are respectively overlapped with zero scale marks 17 in four groups of the four sides of the sliding block 15 in a normal state; the measuring rod 14 comprises a first measuring part 26 with the outer diameter identical to the size of Kong Gongchen to be measured, a second measuring part 28 with the lower limit size identical to the size of the hole to be measured, and a third measuring part 29 with the upper limit size identical to the size of the hole to be measured, wherein the third measuring part 29 is positioned on one side of the first measuring part 26 far away from the measuring part 2, the second measuring part 28 is positioned on one side of the first measuring part 26 near the measuring part 2, a truncated cone-shaped transition area 27 for transition is arranged between the second measuring part 28 and the first measuring part 26 and the third measuring part 29, a round hole is formed on one side of the second measuring part 28 near the measuring part 2, a limit table 30 is arranged on one side of the third measuring part 29 far away from the transition area 27, the limit table 30 is in a truncated cone shape, the minimum diameter of the limit table 30 is identical to the diameter of the third measuring part 29, and one side of the limit table 30 far away from the third measuring part 29 is expanded outwards.
Before detection, hoisting the automobile gearbox housing to the positioning fixture 1 through the hoisting device and positioning, when measuring the aperture error of the hole to be measured at the bottom of the automobile gearbox housing, pressing the cap 21, driving the measuring rod 14 to pass through the corresponding first measuring hole 7 and insert the cap 21 into the hole to be measured, in the process, if the second measuring part 28 is abutted against the bottom of the gearbox housing, explaining that the hole position of the hole to be measured is offset, at this moment, pressing and slightly rotating the cap 21, drawing a circular mark at the interference position of the bottom of the gearbox housing through a circular hole on the second measuring part 28, visually marking the offset position of the hole to be measured, further, sliding the cap 21 along the plane of the connecting table 9, pressing the cap 21 until the second measuring part 28 moves to correspond to the position of the hole to be measured, enabling the measuring rod 14 to be inserted into the hole to be measured, and when the moved second measuring part 28 is still unable to be inserted into the hole to be measured, indicating that the hole to be measured is smaller than the set lower limit, namely, the hole diameter to be measured is smaller than the set, namely, when the hole to be measured is completely inserted into the hole to be measured, namely, the hole to be measured is completely exceeds the set up the upper limit, namely, the hole to be measured is completely is not smaller than the hole to be measured, and when the hole to be measured is completely exceeds the set up the upper limit, namely, the hole to be measured is completely, and the hole to be measured is completely is positioned in the hole to be measured is smaller than the hole to be measured, is positioned to be smaller than the hole to be measured, is, and is positioned to be is smaller than the hole to be is to be measured, the hole to be is, the outer ring at any one of the first measuring part 26, the third measuring part 29, the transition area 27 or the limiting table 30 is abutted to stop pressing the cap 21, at this time, the measuring rod 14 is coaxial with the hole to be measured, meanwhile, the measuring rod 14 is influenced by the reaction force of the hole to be measured, the connecting sleeve 11 drives the sliding block 15 and the sliding ring 23 to move along the plane of the connecting table 9, and after the pressing is stopped by reading, the specific value of the hole position deviation can be known by the first scale marks 17 corresponding to each side of the sliding block 15, so that the convenience of hole position deviation measurement is improved.
Further, the four first scale lines 17 may be marked by different symbols or colors to more visually indicate the directions they represent.
As shown in fig. 3 and 8, the four sides of the sliding block 15 are provided with first flat surfaces 16, one side of the first flat surfaces 16 away from the connecting table 9 is inclined towards the axis position close to the measuring rod 14, and the arrangement has the advantages of reducing shielding of the first flat surfaces 16 on the scale overlapped with the edge of the sliding block 15, and improving reading convenience.
As shown in fig. 3 and 8, the first straight surface 16 is provided with an indication block 22, four groups of second graduation marks 18 are uniformly distributed on the surface of the connecting table 9, which is far away from the side of the supporting plate 3, along the circumference, the second graduation marks 18 are positioned on the side, close to the first through hole 10, of the first graduation mark 17, the second graduation marks 18 are parallel to the side of the sliding block 15, and by setting the indication block 22, the shielding in the hole position deviation value reading process is further reduced, and meanwhile, by setting the second graduation marks 18, the sliding block 15 is calibrated when being used for assisting a detector to slide the sliding block 15, so that the sliding block 15 maintains a correct posture during reading, and the reading accuracy is ensured.
As shown in fig. 4, fig. 6 and fig. 7, the position of the connecting sleeve 11 corresponding to the inner ring of the first through hole 10 is provided with a groove 12, the side wall of the groove 12 is provided with a plurality of second straight surfaces 20 uniformly distributed in a circumferential manner, the first through hole 10 is internally provided with a plurality of elastic pieces 19 uniformly distributed in a circumferential manner, the elastic pieces 19 are in conflict with the second straight surfaces 20, the position of the elastic pieces 19 in conflict with the second straight surfaces 20 is flatly arranged, the movable range of the connecting sleeve 11 along the plane direction of the connecting table 9 is improved by arranging the groove 12, the compactness of the structure is improved, the elastic pieces 19 are arranged, the connecting sleeve 11 can be reset under the action of self elastic force through the conflict of the elastic pieces 19 and the second straight surfaces 20 under the action of the non-detection state of the measuring rod 14, and the slide blocks 15 connected with the connecting sleeve 11 in the reset state keep the correct posture so as to be convenient for the use in the measuring process.
As shown in FIG. 8, the four corners of the side of the sliding block 15, which is close to the connecting table 9, are respectively and rotatably sleeved with the balls 24, and the balls 24 are arranged to prevent the sliding block 15 from generating sliding friction with the sliding block 15 when sliding along the plane of the connecting table 9, so that the sliding block 15 and the connecting table 9 are worn, the service life of the sliding block is ensured, and meanwhile, the balls 24 arranged at the four corners can effectively prevent the sliding block 15 from wearing caused by the first scale line 17 and the second scale line 18 when moving, the service life of the sliding block is prolonged, and the accuracy of reading hole position error values at the bottom of a gearbox housing is ensured.
As shown in fig. 6, 7 and 9, the slip ring 23 is in threaded connection with the connecting sleeve 11, so that the slip ring 23 and the sliding block 15 can be adjusted to clamp the connecting table 9 by rotating the slip ring 23, and when hole position errors are measured, the slip ring 23 and the sliding block 15 jump or incline, so that the measuring rod 14 inclines, the measuring rod 14 cannot be coaxial with a hole to be measured, and the precision of hole position error measurement is guaranteed.
As shown in fig. 9, a plurality of adjusting holes 25 are formed on the outer side of the slip ring 23, when the position of the slip ring 23 needs to be adjusted, a screwdriver or a similar long rod tool can be inserted into the adjusting holes 25 to rotate the slip ring 23 along the tangential direction of the slip ring 23, so that the position of the slip ring 23 is adjusted, and the convenience of adjusting the slip ring 23 under the shielding of the connecting legs of the connecting table 9 is improved.
As shown in fig. 2, a positioning column 4 adapted to the gearbox housing to be measured is mounted on the supporting plate 3, a limiting ring 5 used for limiting the top of the gearbox housing to be measured is mounted on the positioning column 4, a plurality of positioning blocks 6 used for limiting the edge position of the bottom of the gearbox housing to be measured are mounted on the supporting plate 3, the gearbox housing is pre-positioned by the positioning column 4, the gesture of the gearbox lifted to the supporting plate 3 is assisted by the positioning blocks 6, the positioned gearbox housing is fixed by the limiting ring 5, so that displacement of the gearbox housing is generated when hole position errors at the bottom of the gearbox housing are avoided, and the precision of hole position error measurement at the bottom of the gearbox housing is ensured.
As shown in fig. 2, the connection lugs 8 are installed on two opposite sides of the support plate 3, the support plate 3 is rotatably connected with a detection tool mounting table (not shown in the figure) through the connection lugs 8, a limiting component for limiting the rotation angle of the connection lugs 8 is arranged on the detection tool mounting table, the limiting component can be a limiting pin or a limiting bolt in the prior art and is used for guaranteeing that one side of the support plate 3, where the gearbox housing is placed, is vertically upwards when the gearbox housing is hoisted, and when the hole position error at the bottom of the gearbox housing is measured, the support plate 3 is deflected by ninety degrees or one hundred eighty degrees so that a detection personnel can conveniently read in a more comfortable posture.
As shown in fig. 9, a plurality of balls 24 are rotatably sleeved on one side of the slip ring 23, which is close to the connection table 9, and the balls 24 move along the surface of the connection table 9 outside the first through hole 10, so that when relative sliding is generated between the slip ring 23 and the connection table 9 by arranging the balls 24, the generated friction is rolling friction, the abrasion of the slip ring 23 and the connection table 9 in the daily use process is reduced, the service life of the slip ring is prolonged, meanwhile, the slip ring 23 and the connection table 9 are prevented from losing support when the slip ring 23 and the connection table 9 relatively slide due to the limitation of the movement range of the balls 24, and the detection precision is ensured.
According to the technical scheme provided by the invention, an automobile gearbox housing is hoisted to a positioning fixture 1 through a hoisting device and positioned, when the aperture error of a hole to be measured at the bottom of the automobile gearbox housing is measured, a cover cap 21 is pressed, the cover cap 21 drives a measuring rod 14 to pass through a corresponding first measuring hole 7 and be inserted into the hole to be measured, in the process, if a second measuring part 28 is in contact with the bottom of the gearbox housing, the hole position to be measured is proved to generate deviation, at the moment, the cover cap 21 can be pressed and slightly rotated, a circular mark is drawn at the interference position at the bottom of the gearbox housing through a circular hole on the second measuring part 28 so as to intuitively mark the deviation position of the hole to be measured, further, the cover cap 21 can be slid along the plane of the connecting table 9, the cover cap 21 is pressed by driving the measuring rod 14 to slide along the plane of the connecting table 9 until the second measuring part 28 moves to correspond to the position of the hole to be measured, the measuring rod 14 is inserted into the hole to be measured which generates hole position deviation, when the moved second measuring part 28 cannot be inserted into the hole to be measured, the hole diameter of the hole to be measured is smaller than the set lower limit deviation, namely the hole diameter of the hole to be measured is too small, the hole diameter of the hole to be measured is not qualified, when the second measuring part 28 is completely immersed into the hole to be measured, the hole diameter of the hole to be measured is larger than the set lower limit deviation, when the first measuring part 26 is completely immersed into the hole to be measured, the hole diameter of the hole to be measured is larger than the set nominal size, when the third measuring part 29 cannot be inserted into or is difficult to be inserted into the hole to be measured, the hole diameter of the hole to be measured is smaller than the set upper limit deviation, the hole diameter is qualified, when the third measuring part 29 is completely immersed into the hole to be measured, the hole diameter of the hole to be measured is larger than the set upper limit deviation, the hole diameter of the hole to be measured is not qualified, when the hole diameter to be measured is required to be measured, until the outer edge of the inner ring of the hole to be measured is in conflict with the outer ring of any one of the second measuring part 28, the first measuring part 26, the third measuring part 29, the transition area 27 or the limiting table 30, the pressing down of the cap 21 can be stopped, at this time, the measuring rod 14 is coaxial with the hole to be measured, meanwhile, the measuring rod 14 is influenced by the reaction force of the hole to be measured, the connecting sleeve 11 drives the sliding block 15 and the sliding ring 23 to move along the plane of the connecting table 9, after the pressing down is stopped by reading, the specific value of the hole position deviation can be known by the first scale marks 17 corresponding to the edges of the sliding block 15, and the convenience of hole position deviation measurement is improved.
Through seting up recess 12, improve the range of motion of connecting sleeve 11 along the plane direction of connecting bench 9, improve the compactibility of its structure, through setting up shell fragment 19 for measuring stick 14 under non-detection state, a plurality of shell fragments 19 can be under the effect of self elasticity, through the conflict messenger connecting sleeve 11 that makes with recess 12 resets, through the conflict of shell fragment 19 and second plane 20, make the slider 15 that is connected with connecting sleeve 11 under the reset state keep correct gesture, so that its use in the measurement process.
The sliding friction generated between the sliding block 15 and the sliding block 15 during the sliding of the sliding block 15 along the plane of the connecting table 9 is avoided by arranging the balls 24, so that the abrasion of the sliding block 15 and the connecting table 9 is caused, the service life of the gearbox is guaranteed, meanwhile, the balls 24 arranged at four corners can effectively avoid the abrasion caused by the movement of the sliding block 15 on the first scale line 17 and the second scale line 18, the service life of the gearbox is prolonged, and the accuracy of reading hole position error values at the bottom of the gearbox is guaranteed.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. The utility model provides an automobile transmission casing foundry goods hole site error detection device which characterized in that includes: the positioning fixture is used for clamping and positioning the gearbox shell, and one side of the positioning fixture, which is far away from the gearbox shell, is provided with a plurality of measuring components for measuring the hole position deviation of a hole to be measured at the bottom of the gearbox shell;
The positioning fixture comprises a supporting plate, and a plurality of first measuring holes corresponding to holes to be measured at the bottom of the gearbox shell are formed in the supporting plate;
The measuring component comprises a connecting table arranged on one side, far away from the gearbox shell, of the supporting plate, a first through hole penetrating through the connecting table is formed in the middle of the connecting table, a connecting sleeve penetrating through the first through hole is sleeved in the first through hole, a sliding block and a sliding ring are detachably connected to the connecting sleeve, the sliding block and the sliding ring are used for clamping the connecting table and enabling the connecting sleeve to slide along the plane of the connecting table, a measuring rod for measuring the aperture of a hole to be measured is sleeved in the connecting sleeve in a sliding manner, the axis of the measuring rod is parallel to the axis of the hole to be measured, a cover cap is arranged at one end, far away from the positioning clamp, of the measuring rod, a spring is arranged on the cover cap in a sleeved mode, one end, far away from the cover cap, of the spring is connected with the connecting sleeve, the sliding block is rectangular, four groups of first scale lines are uniformly distributed on the surface, far away from one side of the supporting plate, of the connecting table along the circumference, and the corresponding first scale lines are parallel to the edges of the sliding block;
the measuring rod comprises a first measuring part with the outer diameter identical to the size of Kong Gongchen to be measured, a second measuring part with the lower limit size identical to the size of the lower limit of the hole to be measured and a third measuring part with the upper limit size identical to the size of the upper limit of the hole to be measured, wherein the third measuring part is positioned on one side of the first measuring part far away from the measuring part, the second measuring part is positioned on one side of the first measuring part near the measuring part, a truncated cone-shaped transition area for transition is arranged between the second measuring part and the first measuring part and between the second measuring part and the third measuring part, a round hole is formed in one side of the second measuring part near the measuring part, a limiting table is arranged on one side of the third measuring part far away from the transition area, the limiting table is in the shape of a truncated cone, the minimum diameter of the limiting table is identical to the diameter of the third measuring part, and one side of the limiting table far away from the third measuring part is outwards expanded;
The connecting sleeve is provided with a groove at the position corresponding to the inner ring of the first through hole, a plurality of second straight planes are uniformly arranged on the side wall of the groove in a circumferential manner, a plurality of elastic pieces are uniformly arranged in the first through hole in a circumferential manner, the elastic pieces are abutted to the second straight planes, and the position where the elastic pieces are abutted to the second straight planes is straight.
2. The hole position error detection device for the casting of the automobile gearbox casing according to claim 1, wherein the four sides of the sliding block are respectively provided with a first flat surface, and one side of the first flat surface, which is far away from the connecting table, is inclined to the position of the axis, which is close to the measuring rod.
3. The hole position error detection device for the casting of the automobile gearbox casing according to claim 2, wherein the first straight surface is provided with the indicating block, four groups of second scale marks are uniformly distributed on the surface of one side of the connecting table far away from the supporting plate along the circumference, the second scale marks are positioned on one side of the first scale marks close to the first through hole, and the second scale marks are parallel to the side of the sliding block.
4. The hole position error detection device for the casing casting of the automobile gearbox according to claim 1, wherein balls are sleeved at four corners of one side of the sliding block, which is close to the connecting table, in a rotating mode.
5. The device for detecting hole position errors of a casing casting of an automobile transmission according to claim 1, wherein the slip ring is connected with the connecting sleeve through threads.
6. The device for detecting hole position errors of an automobile transmission housing casting according to claim 1, wherein a plurality of adjusting holes are formed in the outer side of the slip ring.
7. The device for detecting the hole position error of the casting of the automobile transmission housing according to claim 1, wherein a positioning column matched with the transmission housing to be detected is installed on the supporting plate, a limiting ring for limiting the top of the transmission housing to be detected is installed on the positioning column, and a plurality of positioning blocks for limiting the bottom edge position of the transmission housing to be detected are installed on the supporting plate.
8. The hole position error detection device for the casting of the automobile gearbox casing according to claim 1, wherein the connecting lugs are arranged on two opposite sides of the supporting plate, the supporting plate is rotationally connected with the detection tool mounting table through the connecting lugs, and a limiting part for limiting the rotation angle of the connecting lugs is arranged on the detection tool mounting table.
9. The device for detecting hole position errors of a casing casting of an automobile transmission according to claim 1, wherein a plurality of balls are rotatably sleeved on one side of the slip ring, which is close to the connecting table, and the balls move along the surface of the connecting table outside the first through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410327299.5A CN117928336B (en) | 2024-03-21 | Hole position error detection device for casing casting of automobile gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410327299.5A CN117928336B (en) | 2024-03-21 | Hole position error detection device for casing casting of automobile gearbox |
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| Publication Number | Publication Date |
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| CN117928336A CN117928336A (en) | 2024-04-26 |
| CN117928336B true CN117928336B (en) | 2024-07-09 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0270721A1 (en) * | 1986-12-09 | 1988-06-15 | Erowa AG | Measuring device for determining the dimensions of an object in three coordinates |
| CN115355793A (en) * | 2022-10-19 | 2022-11-18 | 钜亚汽车零部件科技(太仓)有限公司 | Hole position error detection device for automobile transmission case casting and working method |
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0270721A1 (en) * | 1986-12-09 | 1988-06-15 | Erowa AG | Measuring device for determining the dimensions of an object in three coordinates |
| CN115355793A (en) * | 2022-10-19 | 2022-11-18 | 钜亚汽车零部件科技(太仓)有限公司 | Hole position error detection device for automobile transmission case casting and working method |
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