CN213003802U - Upper centering device for broaching machine - Google Patents
Upper centering device for broaching machine Download PDFInfo
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- CN213003802U CN213003802U CN202021653612.8U CN202021653612U CN213003802U CN 213003802 U CN213003802 U CN 213003802U CN 202021653612 U CN202021653612 U CN 202021653612U CN 213003802 U CN213003802 U CN 213003802U
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Abstract
The utility model discloses an upper centering device for a broaching machine, which comprises a supporting element, a centering element and a positioning element, wherein the centering element is arranged in the supporting element, the positioning element is arranged below the centering element, and the supporting element, the centering element and the positioning element are concentric; the supporting element comprises a supporting plate and a supporting ring; the centering element comprises a centering plate, a centering part and a rolling friction part; the centering plate is a circular piece, a groove on the outer circular surface of the centering plate and a groove on the inner circular surface of the support ring form an annular space, and the rolling friction part is arranged in the annular space; the centering is tightly pressed on the centering plate; three positioning step surfaces are uniformly distributed on the lower plane of the centering plate along the circumferential direction; the positioning element comprises three positioning units, and one positioning unit is connected with one positioning step surface. The utility model discloses the broaching machine is with going up centring means, need not lift by crane when the monodentate broaching and go up centring means and just can accomplish all internal tooth processing, practiced thrift process time, improved work efficiency.
Description
Technical Field
The utility model belongs to the technical field of metal cutting processing, especially, relate to the frock of broaching high accuracy internal tooth and interior rectangle spline.
Background
When the broaching machine is used for broaching the single-tooth inner teeth and the inner rectangular spline, the machining size and form and position tolerance precision can meet the requirement of high-precision machining. The installation schematic position of centering in the conventional broaching process is shown in fig. 14: the lower centering 21 is fixed on the table 22 of the broaching machine, and then the work piece 23 is placed on the lower centering 21, and the upper centering 24 is placed on the upper portion of the work piece 23. Such positioning has the following problems: after each internal tooth is machined, broaching of the next tooth is carried out after numerical control indexing is carried out on the workbench 22 and the machined workpiece 23 on the workbench; because the excircle and the supporting end face of the upper centering 24 are contacted with the inner hole and the end face of the processed workpiece 23, and the upper centering 24 is connected with the equipment guide post 25 through keys and is fixed, when the workbench 22 is numerically controlled and indexed, the supporting end face and the positioning excircle of the upper centering 24 respectively perform circumferential sliding friction with the end face and the inner hole of the processed workpiece 23, and the equipment guide post 25 is easily damaged due to large sliding friction resistance, so the upper centering 24 needs to be lifted after one tooth is processed, the upper centering 24 is reset after the workbench 22 is indexed, and then broaching processing of the next tooth is performed, and the steps are repeated until all internal teeth are processed; thus, the processing time is seriously wasted, and the working efficiency is greatly influenced; secondly, because the upper centering is not adjustable, when each workpiece with different specifications is processed with internal teeth or internal rectangular splines, an upper centering device matched with the workpiece needs to be used, so that the upper centering utilization rate is low, the upper centering device is time-consuming and labor-consuming in manufacturing, and resource waste is greatly caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problem that a centering device is used to broaching machine is provided, need not lift by crane when the monodentate broaching and go up centering device and just can accomplish all internal tooth processing, practiced thrift process time, improved work efficiency. Meanwhile, one upper centering device can meet the requirement of processing internal teeth or internal rectangular splines of different specifications without replacing the upper centering device, so that the upper centering device is wide in application range, the manufacturing cost is effectively saved, and the working efficiency is greatly improved.
The utility model relates to an upper centering device for a broaching machine, which comprises a supporting element, a centering element and a positioning element, wherein the centering element is arranged in the supporting element, the positioning element is arranged below the centering element, and the supporting element, the centering element and the positioning element are concentric; the supporting element comprises a supporting plate and a supporting ring; the supporting plate and the supporting ring are both annular pieces, and the supporting ring is arranged on the supporting plate and fixedly connected with the supporting plate through screws; the centering element comprises a centering plate, a centering part and a rolling friction part; the centering plate is a circular piece, a groove on the outer circular surface of the centering plate and a groove on the inner circular surface of the support ring form an annular space, and the rolling friction part is arranged in the annular space; a notch I is machined in the centering plate, a notch II is machined in the centering plate, the direction of the notch I is the same as that of the notch II, and the centering plate is tightly pressed in centering; three positioning step surfaces are uniformly distributed on the lower plane of the centering plate along the circumferential direction, and each positioning step surface is provided with a positioning hole and a threaded hole; the positioning element comprises three positioning units, and one positioning unit is connected with one positioning step surface.
Furthermore, each positioning unit comprises a locking nut, a support, an adjusting nut, a positioning stud, a rolling bearing and a positioning pin; the cylindrical section at the uppermost part of the support is matched with the positioning hole on the step surface of the centering plate, and the large square block at the upper part of the support is connected with the threaded hole on the step surface of the centering plate through a screw; a flat hole in the small square block at the lower part of the support is matched with the left section of the flat square of the positioning stud, and a locking nut and an adjusting nut are respectively screwed at two ends of the left section of the flat square of the positioning stud and tightly pressed on the left end surface and the right end surface of the small square at the lower part of the support; a groove is processed on the right end face of the positioning stud along the axial lead, and the rolling bearing is arranged in the groove; the right small-diameter section of the positioning stud is milled flat up and down, a through hole is formed in the position perpendicular to the flat surface, and the positioning pin is arranged in the through hole and penetrates through the rolling bearing.
Further, the long edge of the large square block on the upper part of the support is abutted against the step on the step surface of the centering plate.
Further, each positioning unit further comprises a gland; the gland bush is in the outside of adjusting nut, and is connected with the support through the fastener.
Furthermore, the support ring is of a split structure and consists of two identical half support rings.
Further, the rolling friction member is a rolling bearing, a flat bearing, or a steel ball.
Further, when the rolling friction component is a steel ball, the centering element further comprises a limiting screw, a plurality of screw mounting holes are circumferentially and uniformly distributed at the position, close to the outer circular surface, of the upper plane of the centering plate, and the limiting screw is arranged in each screw mounting hole.
Furthermore, when the centering is sliding centering, the upper plane of the centering plate is symmetrically provided with two grooves, the lower plane of the centering plate is symmetrically provided with two bulges, and the centering plate is clamped in the grooves of the centering plate through the bulges; the centering is pressed against the centering plate by a screw.
The utility model discloses go up centring means's advantage is: firstly, when broaching internal teeth or an internal rectangular spline, the workbench and a workpiece on the workbench are subjected to numerical control indexing, and rolling friction exists between the supporting element and the centering plate and between the positioning element and an inner hole of the workpiece; therefore, the friction resistance between the upper centering device and the workpiece is greatly reduced, and the function that the supporting element rotates along with the workpiece and the centering element is fixed is realized. Therefore, all the internal teeth can be machined without lifting and centering in the process of machining the internal teeth, so that the machining time is greatly saved, and the working efficiency is improved; the left and right positions of the positioning studs can be adjusted through the locking nut and the adjusting nut according to the size of the inner hole of the processed workpiece, so that the diameter of a circle formed by rolling bearings in the three positioning units is consistent with the size of the inner hole of the processed workpiece, and the rolling bearings are tightly pressed on the inner hole of the processed workpiece; meanwhile, according to the requirements of the size and the eccentricity of the inner hole of the machined workpiece, the centering can realize the relative movement of the centering plate relative to the centering plate by the front and back movement of the bulge of the centering plate along the groove, and the machining of different machined workpieces is realized by the adjustment of the position of the centering plate.
Drawings
FIG. 1 is a general assembly view of the upper centering device of the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a bottom view of FIG. 1;
FIG. 4 is a front view of the support member;
FIG. 5 is a cross-sectional view taken along line B-B of FIG. 4;
FIG. 6 is a front view of the centering element;
FIG. 7 is a cross-sectional view taken along line A-A of FIG. 6;
FIG. 8 is a top view of FIG. 6;
FIG. 9 is a bottom view of FIG. 6;
FIG. 10 is a front view of the positioning member;
FIG. 11 is a top view of FIG. 10;
FIG. 12 is a left side view of FIG. 10;
fig. 13 is a schematic view of the installation of the upper centering device of the present invention on the broaching machine;
fig. 14 is a schematic view of the installation of the prior art upper centering device on the bench.
Detailed Description
Example 1
The utility model relates to an upper centering device for a broaching machine, which comprises a supporting element, a centering element and a positioning element, wherein the centering element is arranged in the supporting element, the positioning element is arranged below the centering element, and the supporting element, the centering element and the positioning element are concentric; the supporting element comprises a supporting plate 1 and a supporting ring 2; the supporting plate 1 and the supporting ring 2 are both annular pieces, and the supporting ring 2 is arranged on the supporting plate 1 and fixedly connected with the supporting plate 1 through screws; the centering elements comprise a centering plate 3, a centering 4, a rolling friction part 12; the centering plate 3 is a circular piece, a groove on the outer circular surface of the centering plate and a groove on the inner circular surface of the support ring 2 form an annular space, and the rolling friction part 12 is arranged in the annular space; a notch I14 is processed on the centering plate 3, a notch II 15 is processed on the centering plate 4, the direction of the notch I14 is the same as that of the notch II 15, and the centering plate 4 is tightly pressed on the centering plate 3; three positioning step surfaces 16 are uniformly distributed on the lower plane of the centering plate 4 along the circumferential direction, and each positioning step surface is provided with a positioning hole and a threaded hole; the positioning element comprises three positioning units, and one positioning unit is connected with one positioning step surface.
The utility model discloses go up centring means and use the circle center of centering plate 3 as the benchmark. The supporting element is used for pressing a workpiece to be processed, supporting the centering element and forming circumferential rolling friction with the centering element; thereby the locating element can adjust according to the work piece hole size and compress tightly on the hole of work piece, and centering element is confirmed according to work piece hole size and eccentricity requirement, plays the guide effect of broach to decide the final processing shape of work piece. The groove shape of the notch II 15 on the centering 4 is the same as the shape of the internal rectangular spline or internal tooth of the workpiece 23.
As can be seen from fig. 13, when broaching internal teeth or internal rectangular splines, the lower centering device 21 is fixed on the table 22 of the broaching machine, and then the workpiece to be machined 23 is placed on the lower centering device 21, and then the upper centering device 20 of the present invention is placed on the upper end surface of the workpiece to be machined 23: when the worktable 22 and the processed workpiece 23 on the worktable are numerically controlled and indexed, rolling friction exists between the supporting element and the centering plate 3, and between the positioning element and the inner hole of the processed workpiece 23; therefore, the utility model discloses go up the frictional resistance between centering device 20 and the work piece 23 and reduce greatly, realized the support element along with the work piece is rotatory and centering element function motionless. Therefore, all the internal teeth can be processed without lifting and centering in the process of processing the internal teeth, so that the processing time is greatly saved, and the working efficiency is improved.
Example 2
In the upper centering device for the broaching machine: each positioning unit comprises a locking nut 5, a support 6, an adjusting nut 8, a positioning stud 9, a rolling bearing 10 and a positioning pin 11; the cylindrical section at the uppermost part of the support 6 is matched with a positioning hole on the step surface of the centering plate 3, and the large square block at the upper part of the support 6 is connected with a threaded hole on the step surface of the centering plate 3 through a screw; a flat hole in a small square block at the lower part of the support 6 is matched with a flat square at the left section of the positioning stud 9, and a locking nut 5 and an adjusting nut 8 are respectively screwed at two ends of the flat square at the left section of the positioning stud 9 and tightly pressed on the left end face and the right end face of the small square at the lower part of the support 6; a groove is processed on the right end face of the positioning stud 9 along the axial lead, and the rolling bearing 10 is arranged in the groove; the right small-diameter section of the positioning stud 9 is milled flat up and down, a through hole is formed in the position perpendicular to the flat surface, and a positioning pin 11 is arranged in the through hole and penetrates through the rolling bearing 10.
The support 6 and the centering plate 3 are connected and positioned through a cylinder and a screw, so that the connection and the positioning of the centering element and the positioning element are realized. The positioning element can be adjusted according to the size of the inner hole of the processed workpiece, and is supported and positioned on the inner hole of the processed workpiece: according to the size of the inner hole of the processed workpiece, the left and right positions of the positioning stud bolts 9 can be adjusted through the locking nut 5 and the adjusting nut 8, so that the diameter of a circle formed by the rolling bearings 10 in the three positioning units is consistent with the size of the inner hole of the processed workpiece, and the rolling bearings 10 are tightly pressed on the inner hole of the processed workpiece 23.
In order to further achieve a reliable positioning between the support 6 and the centering plate 3, the long sides of the large square blocks on the upper part of the support 6 abut against the steps on the step surface of the centering plate 3.
Example 3
In the upper centering device for the broaching machine: each positioning unit further comprises a gland 7; the gland 7 is sleeved outside the adjusting nut 8 and is connected with the support 6 through a fastener.
The gland 7 is connected with the support 6, so that the adjusting nut 8 can be effectively prevented from loosening, and the rolling bearing 10 is ensured to compress the inner holes of 23 processed parts.
Example 4
In the upper centering device for the broaching machine: the support ring 2 is of a split structure and consists of two identical half support rings.
The support ring 2 of the split structure facilitates the assembly and disassembly of the centering element. The support element is arranged to press the workpieces with different specifications, so that the processing range is expanded.
Example 5
In the upper centering device for the broaching machine: the rolling friction member 12 is a rolling bearing, a flat bearing, or a steel ball.
When the rolling friction component 12 is a steel ball, the centering element further includes a limit screw 13, a plurality of screw mounting holes are circumferentially and uniformly distributed at a position, close to the outer circular surface, of the upper plane of the centering plate 3, and the limit screw 13 is arranged in the screw mounting holes.
The parts of rolling friction between the support ring 2 and the centering plate 3 can be bearings, steel balls and the like; when the rolling friction part 12 is a steel ball, the motion range of the steel ball is limited by the limiting screw 13, so that the steel balls 12 are uniformly distributed in the annular space, and the stability of the rolling friction is ensured.
Example 6
When the centering plate 4 is used for sliding centering, two grooves are symmetrically arranged on the upper plane of the centering plate 3, two bulges are symmetrically arranged on the lower plane of the centering plate 4, and the centering plate 4 is clamped in the grooves of the centering plate 3 through the bulges; the centering 4 is pressed against the centering plate 3 by means of screws.
According to the requirements of the size and the eccentricity of the inner hole of the processed workpiece, the centering plate 4 can move back and forth along the groove through the bulge of the centering plate to realize the relative movement of the centering plate relative to the centering plate 3, and the processing of different processed workpieces is realized through the adjustment of the position of the centering plate. The sliding centering 4 is fastened with the centering plate 3 through a bolt and then is in key connection with the equipment guide post 25 to fix and support the equipment guide post. The utility model discloses a design centering 4 for the slip centering for on one centering device can use on hole and the different work piece of eccentricity size, the work piece that does not need a specification corresponds one and goes up centering device, consequently greatly reduced manufacturing cost, promoted production efficiency greatly.
When the device is used, a support element is selected according to the size of an inner hole of a processed workpiece, and the whole upper centering device is suspended to the upper end surface of the processed workpiece 23 by the support plate 1 and the support ring 2; then, according to the size of the inner hole of the processed workpiece, three rolling bearings 10 in the positioning element are enabled to tightly press the inner hole of the processed workpiece, and the sizes of the top ends of the rolling bearings 10 are adjusted only through positioning studs 9 as the central points of the centering plate 3 and the three uniformly distributed step surfaces are fixed values, and the left and right positions of the positioning studs 9 are adjusted through locking nuts 5 and adjusting nuts 8; then according to the size of the inner hole of the processed workpiece and the requirement of the broaching eccentricity, the centering plate 3 is slid to be adjusted to an accurate position by the centering plate 4, and the centering plate is connected with the equipment guide post 25 by a flat key to be fixed and supported, and finally the broaching of the inner teeth or the inner rectangular spline of the processed workpiece is realized by the broaching tool 26.
Use the utility model discloses during the centering device, at the broaching in-process of internal tooth, need not to lift by crane centering device, just can accomplish the broaching of all internal teeth. Meanwhile, when internal teeth or internal rectangular splines of products with different specifications are broached, the rolling bearing 10 and the centering device 4 can be continuously machined only by correspondingly adjusting according to the size of an inner hole of a machined workpiece, and the upper centering devices with different specifications do not need to be replaced.
Claims (8)
1. The utility model provides a broaching machine is with going up centring means which characterized by: the centering device comprises a supporting element, a centering element and a positioning element, wherein the centering element is arranged in the supporting element, and the positioning element is arranged below the centering element and is concentric with the supporting element; the supporting element comprises a supporting plate (1) and a supporting ring (2); the support plate (1) and the support ring (2) are both annular pieces, and the support ring (2) is arranged on the support plate (1) and fixedly connected with the support plate through screws; the centering element comprises a centering plate (3), a centering plate (4) and a rolling friction part (12); the centering plate (3) is a circular piece, a groove on the outer circular surface of the centering plate and a groove on the inner circular surface of the support ring (2) form an annular space, and the rolling friction part (12) is arranged in the annular space; a notch I (14) is processed on the centering plate (3), a notch II (15) is processed on the centering plate (4), the direction of the notch I (14) is the same as that of the notch II (15), and the centering plate (3) is tightly pressed by the centering plate (4); three positioning step surfaces (16) are uniformly distributed on the lower plane of the centering (4) along the circumferential direction, and each positioning step surface is provided with a positioning hole and a threaded hole; the positioning element comprises three positioning units, and one positioning unit is connected with one positioning step surface.
2. The upper centering device for the broaching machine as set forth in claim 1, wherein: each positioning unit comprises a locking nut (5), a support (6), an adjusting nut (8), a positioning stud (9), a rolling bearing (10) and a positioning pin (11); the uppermost cylindrical section of the support (6) is matched with a positioning hole in the step surface of the centering plate (3), and the large square block on the upper part of the support (6) is connected with a threaded hole in the step surface of the centering plate (3) through a screw; a flat hole in a small square block at the lower part of the support (6) is matched with a left section of a flat square of the positioning stud (9), and a locking nut (5) and an adjusting nut (8) are respectively screwed at two ends of the left section of the flat square of the positioning stud (9) and tightly pressed on the left end face and the right end face of the small square at the lower part of the support (6); a groove is processed on the right end face of the positioning stud (9) along the axial lead, and the rolling bearing (10) is arranged in the groove; the right small-diameter section of the positioning stud (9) is milled flat up and down, a through hole is formed in the position perpendicular to the flat surface, and a positioning pin (11) is arranged in the through hole and penetrates through the rolling bearing (10).
3. The upper centering device for the broaching machine as set forth in claim 2, wherein: the long edge of the large square block at the upper part of the support (6) is tightly leaned on the step of the step surface of the centering plate (3).
4. The upper centering device for the broaching machine as set forth in claim 2, wherein: each positioning unit further comprises a gland (7); the gland (7) is sleeved outside the adjusting nut (8) and is connected with the support (6) through a fastener.
5. The upper centering device for the broaching machine as set forth in claim 1, wherein: the support ring (2) is of a split structure and consists of two identical half support rings.
6. The upper centering device for the broaching machine as set forth in claim 1, wherein: the rolling friction component (12) is a rolling bearing, a plane bearing or a steel ball.
7. The upper centering device for the broaching machine as set forth in claim 1, wherein: when the rolling friction part (12) is a steel ball, the centering element further comprises a limiting screw (13), a plurality of screw mounting holes are circumferentially and uniformly distributed at the position, close to the outer circular surface, of the upper plane of the centering plate (3), and the limiting screw (13) is arranged in each screw mounting hole.
8. The upper centering device for the broaching machine as set forth in claim 1, wherein: when the centering (4) is sliding centering, two grooves are symmetrically arranged on the upper plane of the centering plate (3), two bulges are symmetrically arranged on the lower plane of the centering (4), the centering (4) is clamped in the grooves of the centering plate (3) through the bulges, and the centering (4) is tightly pressed on the centering plate (3) through a screw; the size of the notch I (14) on the centering plate (3) is larger than that of the notch II (15) on the centering plate (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021653612.8U CN213003802U (en) | 2020-08-11 | 2020-08-11 | Upper centering device for broaching machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021653612.8U CN213003802U (en) | 2020-08-11 | 2020-08-11 | Upper centering device for broaching machine |
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| CN213003802U true CN213003802U (en) | 2021-04-20 |
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| CN202021653612.8U Active CN213003802U (en) | 2020-08-11 | 2020-08-11 | Upper centering device for broaching machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113305351A (en) * | 2021-06-18 | 2021-08-27 | 泰尔重工股份有限公司 | Spline sleeve single-tooth pulling clamp and using method thereof |
-
2020
- 2020-08-11 CN CN202021653612.8U patent/CN213003802U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113305351A (en) * | 2021-06-18 | 2021-08-27 | 泰尔重工股份有限公司 | Spline sleeve single-tooth pulling clamp and using method thereof |
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