CN113305351A - Spline sleeve single-tooth pulling clamp and using method thereof - Google Patents
Spline sleeve single-tooth pulling clamp and using method thereof Download PDFInfo
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- CN113305351A CN113305351A CN202110680028.4A CN202110680028A CN113305351A CN 113305351 A CN113305351 A CN 113305351A CN 202110680028 A CN202110680028 A CN 202110680028A CN 113305351 A CN113305351 A CN 113305351A
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- 238000000034 method Methods 0.000 title claims description 7
- 238000005096 rolling process Methods 0.000 claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003754 machining Methods 0.000 description 13
- 238000005299 abrasion Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010862 gear shaping Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D41/00—Broaching machines or broaching devices characterised only by constructional features of particular parts
- B23D41/06—Broaching machines or broaching devices characterised only by constructional features of particular parts of devices for feeding, clamping, or ejecting workpieces
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Abstract
The invention discloses a single-tooth pull clamp for a spline sleeve, which comprises an upper centering clamp and a lower centering clamp, wherein the lower centering clamp and a rotary worktable of a broaching machine are connected into a whole, the lower section of the spline sleeve is arranged in the lower centering clamp, the upper centering clamp is sleeved on the upper section of the spline sleeve and is connected with a tool guide post into a whole, and rolling friction is formed between the upper centering clamp and an inner hole on the upper section of the spline sleeve. The upper centering clamp comprises an upper centering clamp body, an orientation key, a set screw and a rolling friction part, wherein the rolling friction part comprises a plurality of rolling friction units; the upper centering clamp body is a hollow sleeve; the inner hole of the upper centering clamp body is in small clearance fit with the outer circle of the tool guide post, the small-diameter outer circle of the lower portion is in clearance fit with the inner hole of the upper portion of the spline housing, a plurality of step holes are formed in the lower end face of the upper centering clamp body, and the rolling friction unit is arranged in the step holes and is in rolling friction with the inner hole of the upper portion of the spline housing. The spline sleeve single-tooth pulling fixture adopts rolling friction to replace sliding friction when indexing, thereby greatly improving the production efficiency.
Description
Technical Field
The invention relates to the field of machine manufacturing, in particular to a spline sleeve single-tooth pulling clamp and a using method thereof.
Background
In machining, the internal spline with a larger major diameter is often machined, and the numerical control single-tooth broaching machine is ideal internal spline machining equipment due to the fact that the stroke of the gear shaping machine is short, the linear cutting efficiency is low, and the large thickness precision is not high. The single-tooth broaching machine for processing the spline housing is characterized in that a workpiece needs to rotate to index one tooth and then the next tooth slot is processed every time one tooth slot is processed.
The structure of the existing spline housing single-tooth pulling clamp is shown in the attached drawings 5 and 6, and the defect is that: firstly, the inner hole of the existing upper centering clamp body 24 is in clearance fit with the cutter guide post 2, the excircle of the upper centering clamp body is in clearance fit with the inner hole of the spline sleeve 17, and the excircle of the lower part of the spline sleeve 17 is in clearance fit with the existing lower centering clamp body 18, so that the clamp has large positioning error and low processing precision; secondly, the contact length between the outer circle of the lower part of the spline sleeve 17 and the lower centering fixture body 18 is short and easy to shake, so that the fixture positioning error is large and the system rigidity is poor; thirdly, the clamping ring 20 clamps the outer circle of the spline housing 17 through the screw 19, and then the driving lever 23 is locked through the screw 21 and the clamping block 22, the clamping force of the screw 19 is small, so that the spline housing 17 is easy to shake, and the machining precision of the clamp is low; and fourthly, the spline housing 17 and the inner hole of the existing upper centering fixture body 24 are in sliding friction, so that the middle-large spline housing cannot be directly indexed, when the spline housing is machined with one tooth and needs indexing, the upper centering fixture must be lifted, the workpiece is arranged in the workpiece after rotating one tooth, the machining efficiency is low, and the abrasion of the matching surfaces of the existing upper centering fixture and the tool guide column 2 is accelerated. In a word, the existing single-tooth pulling clamp for the spline housing has large positioning error and poor system rigidity, can shake in the spline housing processing process, and has poor processing precision and low processing efficiency.
Disclosure of Invention
The invention aims to solve the problem of providing a novel spline housing single-tooth pulling clamp, and rolling friction is adopted to replace sliding friction during indexing, so that the spline housing single-tooth pulling clamp is flexible to rotate, and the production efficiency is greatly improved. In addition, the spline housing single-tooth pulling clamp disclosed by the invention is convenient and quick to clamp, high in positioning accuracy, good in system rigidity and high in machining accuracy. Meanwhile, the invention also provides a use method of the spline housing single-tooth pulling clamp.
The invention relates to a single-tooth pull clamp for a spline sleeve, which comprises an upper centering clamp and a lower centering clamp, wherein the lower centering clamp and a rotary worktable of a broaching machine are connected into a whole, the lower section of the spline sleeve is arranged in the lower centering clamp, the upper centering clamp is sleeved on the upper section of the spline sleeve and is connected with a tool guide post into a whole, and rolling friction is formed between the upper centering clamp and an inner hole on the upper section of the spline sleeve.
Further, the upper centering fixture comprises an upper centering fixture body, an orientation key, a set screw and a rolling friction part, wherein the rolling friction part comprises a plurality of rolling friction units; the upper centering clamp body is a hollow sleeve, and a notch is processed in an inner hole of the upper centering clamp body; the inner hole of the upper centering clamp body is in small clearance fit with the outer circle of the tool guide post, the small-diameter outer circle at the lower part is in clearance fit with the inner hole at the upper part of the spline sleeve, a plurality of step holes are arranged on the lower end face, and the rolling friction unit is arranged in the step holes and is in rolling friction with the inner hole at the upper part of the spline sleeve; the upper surface of the upper centering clamp body is provided with a key groove, and the orientation key is arranged in the key groove, matched with the key groove of the tool guide column and locked through a set screw.
Furthermore, each rolling friction unit comprises a bearing and a stepped pin shaft, and the stepped pin shaft and the bearing are arranged in the stepped hole; the diameter of a large step hole of the upper centering clamp body is slightly larger than that of the bearing and is intersected with a small-diameter excircle of the bearing, the bearing is arranged in the large step hole, and the stepped pin shaft penetrates through the bearing and tightly presses the bearing on a step surface of the step hole; the inner ring of the bearing is matched with the small-diameter section of the stepped pin shaft, and the outer ring of the bearing is in contact with the inner hole in the upper part of the spline sleeve to form rolling friction.
Furthermore, the step holes of the upper centering clamp body are uniformly distributed, and no step hole is arranged at the notch of the inner hole.
Further, the following steps: a part of the large-diameter excircle of the stepped pin shaft is cut into a straight edge, and the upper section and the lower section of the stepped pin shaft are respectively in interference fit with the small step hole and the large step hole.
Furthermore, go up centering fixture still includes the screw, goes up centering fixture body hole breach's opposite side and sets up a horizontal screw, and the screw setting is in horizontal screw.
Further, the lower centering fixture comprises a lower centering fixture body, a lower taper sleeve, a spring jacket, an upper taper sleeve, two handles and a round nut; the lower centering clamp body is sleeve-shaped, a flange seam allowance at the lower part of the lower centering clamp body is matched with an inner hole of the broaching machine rotary worktable and is connected with the broaching machine rotary worktable through a screw, a lower taper sleeve is arranged on the inner hole at the lower part of the lower centering clamp body, and an inner taper of the lower taper sleeve is matched with an outer taper at the lower part of the spline sleeve; an upper taper sleeve and a spring jacket are arranged on an inner hole at the upper part of the lower centering fixture body from outside to inside, the upper taper sleeve is matched with the spring jacket through a conical surface, and the spring jacket is matched with the spline sleeve; the round nut is screwed on the thread at the upper part of the lower centering clamp body, and the two handles are symmetrically arranged on the outer circumference of the round nut.
Furthermore, an outer cone on the upper portion of the spring jacket is matched with an inner cone of the upper taper sleeve, and the inner surface and the outer surface of the lower cylinder are in clearance fit with the outer circle of the spline sleeve and the inner hole in the middle of the lower centering clamp body respectively.
Furthermore, a plurality of vertical grooves are uniformly distributed on the outer circle of the spring jacket.
The invention discloses a using method of a spline housing single-tooth pulling clamp, which comprises the following steps: firstly, a lower centering fixture is installed on a broaching machine rotary table, a gauge stand is fixed on a cutter guide column, a rotary broaching machine rotary table is used for marking a gauge to align the center of the lower centering fixture, then the lower centering fixture is fixed on the broaching machine rotary table by using a screw, then a spline sleeve is installed in the lower centering fixture, under the self-weight action of the spline sleeve, an outer cone at the lower part of the spline sleeve is attached to an inner cone of the lower cone sleeve, an outer circle at the middle part of the spline sleeve is attached to a spring jacket, and finally a round nut is driven to move downwards by rotating a handle, so that the spring jacket can position and clamp the spline sleeve; firstly, an upper centering fixture is arranged in a cutter guide post, so that a bearing is positioned on a spline sleeve, then a screw is locked to fix the upper centering fixture on the cutter guide post, a gauge stand is fixed on the spline sleeve, a broaching machine moving workbench is adjusted, a rotary broaching machine rotary workbench is rotated to perform gauge alignment, so that the distribution centers of a plurality of bearings on the upper centering fixture are superposed with the center of the broaching machine rotary workbench, then the screw is loosened to enable the upper centering fixture to descend along the cutter guide post, so that the bearing is contacted with an inner hole in the upper part of the spline sleeve, and finally the screw is locked to fix the upper centering fixture on the cutter guide post for tooth broaching.
The spline housing single-tooth pulling clamp has the advantages that: the upper centering fixture forms rolling friction through a bearing in the friction assembly and an inner hole of a spline housing workpiece, and when one tooth is machined on the spline housing, the spline housing can rotate relative to the upper centering fixture through the rolling friction to complete indexing, so that the next tooth is machined; the sliding friction is flexible to rotate, so that the upper centering fixture does not need to be lifted even if a large spline housing is machined, and the machining efficiency is improved; secondly, the bearing accurately centers the inner hole at the upper part of the spline sleeve, so that the positioning error of the clamp is small, and the processing precision is high; the contact length of the spring jacket in the lower centering fixture and the outer circle of the lower part of the spline housing is long, so that the fixture is small in positioning error and strong in system rigidity; the radial clamping of the spring jacket ensures that the spline sleeve is reliably clamped and has high processing precision; and fourthly, a lower taper sleeve and a spring jacket in the lower centering fixture and a bearing in the upper centering fixture enable the spline sleeve single-tooth pulling fixture to be convenient and fast to clamp.
Drawings
FIG. 1 is a schematic structural view of a spline housing single tooth pulling clamp according to the present invention;
FIG. 2 is a top view of FIG. 1;
FIG. 3 is a schematic structural view of an upper centering fixture;
FIG. 4 is a schematic structural view of a lower centering fixture;
FIG. 5 is a schematic structural view of a conventional spline housing single-tooth pulling clamp;
fig. 6 is a top view of fig. 5.
In the figure: 1. a broaching machine fixing workbench; 2. a tool guide post; 3. a broaching machine rotary table; 4. a screw; 5. a lower centering fixture body; 6. a lower taper sleeve; 7. a spring jacket; 8. mounting a taper sleeve; 9. a handle; 10. a round nut; 11. a pin shaft; 12. a bearing; 13. a screw; 14. an upper centering fixture body; 15. an orientation key; 16. a screw; 17. a spline housing; 18. the existing lower centering fixture body; 19. a screw; 20. a clamp ring; 21. a screw; 22. a clamping block; 23. a deflector rod; 24. the existing centering clamp body.
Detailed Description
The invention will be further described by means of examples in conjunction with the accompanying drawings.
Example 1
As can be seen from figures 1, 2, 3 and 4, the spline housing single-tooth pulling clamp comprises an upper centering clamp and a lower centering clamp, wherein the lower centering clamp and a broaching machine rotary table 3 are connected into a whole, the lower section of a spline housing 17 is arranged in the lower centering clamp, the upper centering clamp is sleeved on the upper section of the spline housing 17 and is connected with a tool guide post 2 into a whole, and rolling friction is formed between the upper centering clamp and an inner hole of the upper section of the spline housing 17.
After the spline housing 17 has machined one tooth, the spline housing 17 can be rotated relative to the upper centering jig by rolling friction to complete indexing, so that the next tooth is machined. Because rolling friction replaces sliding friction during indexing, the rotary mechanism is flexible in rotation, the upper centering fixture does not need to be hoisted even a large spline housing is machined, machining efficiency is improved, and abrasion of matching surfaces of the upper centering fixture and the tool guide post 2 is delayed.
Example 2
As can be seen from fig. 1, 2 and 3, the spline housing single-tooth pull clamp of the invention comprises: the upper centering clamp comprises an upper centering clamp body 14, an orientation key 15, a set screw 16 and a rolling friction part, wherein the rolling friction part comprises a plurality of rolling friction units; the upper centering fixture body 14 is a hollow sleeve, and a gap is processed in an inner hole of the hollow sleeve; the inner hole of the upper centering clamp body 14 is in small clearance fit with the outer circle of the tool guide post 2, the small-diameter outer circle at the lower part is in clearance fit with the inner hole at the upper part of the spline housing 17, a plurality of step holes are arranged on the lower end face, and the rolling friction unit is arranged in the step holes and is in rolling friction with the inner hole at the upper part of the spline housing 17; the upper centering clamp body 14 is provided with a key groove, and a directional key 15 is arranged in the key groove, is matched with the key groove of the tool guide column 2 and is locked by a set screw 16.
The rolling friction unit is arranged in a step hole of the upper centering clamp body 14 and is in rolling friction with an inner hole of the spline sleeve 17; when one tooth is machined, the spline housing 17 can be rotated relative to the upper centering jig by the rolling friction unit to complete indexing, thereby machining the next tooth. Because rolling friction is adopted to replace sliding friction during indexing, the rotation is flexible, and the upper centering fixture does not need to be hoisted even if a large spline housing is processed. Wherein, the orientation key 15 can prevent the circumferential rotation of the upper centering fixture, thereby ensuring the processing quality.
Example 3
As can be seen from fig. 1, 2 and 3, the spline housing single-tooth pull clamp of the invention comprises: each rolling friction unit comprises a bearing 12 and a stepped pin shaft 11, and the stepped pin shafts 11 and the bearings 12 are arranged in stepped holes; the diameter of a large step hole of the upper centering fixture body 14 is slightly larger than that of the bearing 12 and is intersected with a small-diameter excircle of the bearing, the bearing 12 is arranged in the large step hole, and the stepped pin shaft 11 penetrates through the bearing 12 and tightly presses the bearing 12 on a step surface of the step hole; the inner ring of the bearing 12 is matched with the small-diameter section of the stepped pin shaft 11, and the outer ring of the bearing is in contact with the inner hole in the upper part of the spline sleeve 17 to form rolling friction.
Wherein, the step holes of the upper centering fixture body 14 are uniformly distributed, and no step hole is arranged at the gap of the inner hole.
When the spline housing 17 is indexed, the broaching machine rotary table 3 drives the spline housing 17 to rotate through the lower centering fixture, and the rolling friction resistance between the inner hole in the upper part of the spline housing 17 and the bearing 12 is small, so that indexing is easily completed. Meanwhile, the bearing 12 is in contact with the inner hole in the upper portion of the spline housing 17, and the inner hole in the upper portion of the spline housing 17 can be accurately centered relative to clearance fit, so that accurate positioning between the spline housing 17 and the tool guide post 2 is achieved, and therefore the clamp is small in positioning error and high in machining precision.
Example 4
As can be seen from fig. 1, 2 and 3, the spline housing single-tooth pull clamp of the invention comprises: a part of the large-diameter excircle of the stepped pin shaft 11 is cut into a straight edge, and the upper section and the lower section of the straight edge are respectively in interference fit with the small step holes and the large step holes.
In order to prevent interference between the stepped pin shaft 11 and the inner hole in the upper portion of the spline housing 17 and influence on the indexing of the spline housing 17, the straight edge of the large-diameter outer circle of the stepped pin shaft 11 faces the inner hole in the upper portion of the spline housing 17, so that only the bearing 12 and the inner hole in the upper portion of the spline housing 17 are in rolling friction, and the indexing of the spline housing 17 is guaranteed.
When the space of the stepped hole of the upper centering fixture body 14 is large, a larger bearing and a stepped pin shaft with high rigidity can be selected, the stepped pin shaft does not need a large step excircle, and the bearing can be supported by a cantilever.
Example 5
As can be seen from fig. 1, 2 and 3, the spline housing single-tooth pull clamp of the invention comprises: the upper centering clamp further comprises a screw 13, a transverse screw hole is formed in the opposite surface of an inner hole notch of the upper centering clamp body 14, and the screw 13 is arranged in the transverse screw hole.
The locking screw 13 enables the upper centering clamp and the tool guide post 2 to be relatively fixed, so that the tool guide post 2 is prevented from shaking relative to the upper centering clamp body 14 in the machining process, and the machining precision is guaranteed.
Example 6
As can be seen from fig. 1, 2 and 4, the spline housing single-tooth pull clamp of the invention comprises: the lower centering fixture comprises a lower centering fixture body 5, a lower taper sleeve 6, a spring jacket 7, an upper taper sleeve 8, two handles 9 and a round nut 10; the lower centering clamp body 5 is in a sleeve shape, a flange spigot at the lower part of the lower centering clamp body is matched with an inner hole of the broaching machine rotary table 3 and is connected with the broaching machine rotary table 3 through a screw 4, a lower conical sleeve 6 is arranged on the inner hole at the lower part of the lower centering clamp body 5, and an inner cone of the lower conical sleeve 6 is matched with an outer cone at the lower part of the spline sleeve 17; an upper taper sleeve 8 and a spring jacket 7 are arranged on an inner hole in the upper part of the lower centering clamp body 5 from outside to inside, the upper taper sleeve 8 is matched with the spring jacket 7 through a conical surface, and the spring jacket 7 is matched with a spline sleeve 17; the round nut 10 is screwed on the thread at the upper part of the lower centering fixture body 5, and the two handles 9 are symmetrically arranged on the outer circumference of the round nut 10.
After the spline housing 17 is placed into the lower centering fixture, the lower outer circle of the spline housing 17 is matched with the lower taper sleeve 6, and the middle outer circle of the spline housing 17 is matched with the spring jacket 7, so that the spline housing 17 is reliably positioned. When the handle 9 rotates the round nut 10 to lock, on one hand, the spring jacket 7 is driven to move downwards, and on the other hand, the spring jacket 7 is pressed radially through the conical surface matching of the upper taper sleeve 8 and the spring jacket 7, so that the pressing and the accurate positioning of the spline sleeve 17 are realized. Therefore, the positioning error of the clamp is small, and the processing precision is high.
Example 7
As can be seen from fig. 1, 2 and 4, the spline housing single-tooth pull clamp of the invention comprises: the outer cone on the upper part of the spring jacket 7 is matched with the inner cone of the upper cone sleeve 8, and the inner surface and the outer surface of the lower cylinder are respectively in clearance fit with the outer circle of the spline sleeve 17 and the inner hole in the middle of the lower centering clamp body 5.
The spring jacket 7 is matched with the middle inner hole of the lower centering clamp body 5 and the outer circle of the spline sleeve 17, so that the accurate positioning of the spline sleeve 17 is guaranteed, and meanwhile, the spline sleeve 17 can be tightly pressed after the round nut 10 is locked.
The contact length of the spring jacket 7 and the outer circle of the lower part of the spline housing 17 is long, so that the positioning error is small, and the rigidity of the clamp system is improved; meanwhile, the radial clamping of the spring jacket 7 enables the spline sleeve 17 to be reliably clamped, the spline sleeve 17 cannot shake in the machining process, and machining precision is high.
Wherein, the excircle of the spring jacket 7 is provided with a plurality of uniformly distributed vertical grooves.
The spring jacket 7 is provided with vertical grooves so that the spring jacket is better elastic and can better clamp the spline housing 17 when the round nut 10 is locked.
Example 8
When the spline sleeve single-tooth pulling clamp is used: firstly, a lower centering fixture is installed on a broaching machine rotary table 3, a gauge stand is fixed on a cutter guide column 2, the rotary broaching machine rotary table 3 is used for centering the center of the lower centering fixture, then the lower centering fixture is fixed on the broaching machine rotary table 3 by using a screw 4, then a spline sleeve 17 is installed in the lower centering fixture, under the self-weight action of the spline sleeve 17, an outer cone at the lower part of the spline sleeve 17 is attached to an inner cone of a lower cone sleeve 6, an outer circle at the middle part of the spline sleeve is attached to a spring jacket 7, and finally a round nut 10 is driven to move downwards by a rotating handle 9, so that the spring jacket 7 is used for positioning and clamping the spline sleeve 17; firstly, an upper centering fixture is arranged in a cutter guide post 2, a bearing 12 is positioned on a spline housing 17, then a screw 13 is locked to fix the upper centering fixture on the cutter guide post 2, a gauge stand is fixed on the spline housing 17, a broaching machine moving workbench 1 is adjusted, a rotary broaching machine rotary workbench 3 is rotated to perform gauge alignment, the distribution centers of a plurality of bearings 12 on the upper centering fixture are superposed with the center of the broaching machine rotary workbench 3, then the screw 13 is loosened to enable the upper centering fixture to descend along the cutter guide post 2, the bearing 12 is enabled to be in contact with an inner hole in the upper part of the spline housing 17, and finally the screw 13 is locked to enable the upper centering fixture to be fixed on the cutter guide post 2, so that tooth broaching can be performed. After one tooth is pulled out, the rotary bench 3 of the rotary broaching machine drives the spline housing 17 to rotate through the lower centering fixture, so that indexing is easily completed, and the next tooth is pulled out. From the above, the lower taper sleeve in the lower centering fixture, the spring jacket and the bearing in the upper centering fixture enable the spline sleeve single-tooth pull fixture to be convenient and fast to clamp.
The spline housing single-tooth pulling fixture adopts rolling friction to replace sliding friction when indexing, so that the spline housing single-tooth pulling fixture is flexible in rotation, and does not need to hoist the upper centering even if a large spline housing is processed, thereby greatly improving the production efficiency. Meanwhile, the spline sleeve can be connected with the rotary worktable into a whole through the lower centering fixture, the upper centering fixture is connected with the tool guide post into a whole, and the upper centering fixture is accurately positioned through the bearing and the inner hole of the workpiece; therefore, the fixture has high positioning precision, good body system rigidity, high processing precision of the spline housing and convenient and quick clamping of the spline housing.
Claims (10)
1. The utility model provides a spline cover monodentate draws anchor clamps which characterized by: the upper centering fixture is sleeved on the upper section of the spline sleeve (17) and is connected with the tool guide post (2) into a whole, and rolling friction is formed between the upper centering fixture and an inner hole on the upper section of the spline sleeve (17).
2. The spline housing single tooth pulling clamp according to claim 1, wherein: the upper centering clamp comprises an upper centering clamp body (14), an orientation key (15), a set screw (16) and a rolling friction part, wherein the rolling friction part comprises a plurality of rolling friction units; the upper centering clamp body (14) is a hollow sleeve, and a gap is processed in the inner hole of the upper centering clamp body; the inner hole of the upper centering clamp body (14) is in small clearance fit with the outer circle of the tool guide post (2), the small-diameter outer circle at the lower part is in clearance fit with the inner hole at the upper part of the spline sleeve (17), a plurality of step holes are arranged on the lower end face, and the rolling friction unit is arranged in the step holes and is in rolling friction with the inner hole at the upper part of the spline sleeve (17); a key groove is formed in the upper surface of the upper centering clamp body (14), and a directional key (15) is arranged in the key groove, matched with the key groove of the tool guide column (2) and locked through a set screw (16).
3. The spline housing single tooth pulling clamp according to claim 2, wherein: each rolling friction unit comprises a bearing (12) and a stepped pin shaft (11), and the stepped pin shafts (11) and the bearings (12) are arranged in the stepped holes; the diameter of a large step hole of the upper centering clamp body (14) is slightly larger than that of the bearing (12) and is intersected with a small-diameter excircle of the bearing, the bearing (12) is arranged in the large step hole, and the stepped pin shaft (11) penetrates through the bearing (12) and presses the bearing (12) on a step surface of the step hole; the inner ring of the bearing (12) is matched with the small-diameter section of the stepped pin shaft (11), and the outer ring of the bearing is in contact with the inner hole in the upper part of the spline sleeve (17) to form rolling friction.
4. The spline housing single tooth pulling clamp according to claim 2, wherein: stepped holes of the upper centering clamp body (14) are uniformly distributed, and no stepped hole is arranged at the notch of the inner hole.
5. The spline housing single tooth pulling clamp according to claim 3, wherein: a part of the large-diameter excircle of the stepped pin shaft (11) is cut into a straight edge, and the upper section and the lower section of the straight edge are respectively in interference fit with the small step holes and the large step holes.
6. The spline housing single tooth pulling clamp according to claim 2, wherein: go up centering fixture still includes screw (13), goes up centering fixture body (14) hole breach's opposite side and sets up a horizontal screw, and screw (13) set up in horizontal screw.
7. The spline housing single tooth pulling clamp according to claim 2, wherein: the lower centering clamp comprises a lower centering clamp body (5), a lower taper sleeve (6), a spring jacket (7), an upper taper sleeve (8), two handles (9) and a round nut (10); the lower centering clamp body (5) is sleeve-shaped, a flange spigot at the lower part of the lower centering clamp body is matched with an inner hole of the broaching machine rotary table (3) and is connected with the broaching machine rotary table (3) through a screw (4), a lower taper sleeve (6) is arranged on the inner hole at the lower part of the lower centering clamp body (5), and an inner taper of the lower taper sleeve (6) is matched with an outer taper at the lower part of the spline sleeve (17); an upper taper sleeve (8) and a spring jacket (7) are arranged on an inner hole in the upper part of the lower centering clamp body (5) from outside to inside, the upper taper sleeve (8) is matched with the spring jacket (7) through a conical surface, and the spring jacket (7) is matched with a spline sleeve (17); the round nut (10) is screwed on the thread at the upper part of the lower centering fixture body (5), and the two handles (9) are symmetrically arranged on the outer circumference of the round nut (10).
8. The spline housing single tooth pulling clamp according to claim 7, wherein: the outer cone on the upper part of the spring jacket (7) is matched with the inner cone of the upper taper sleeve (8), and the inner surface and the outer surface of the lower cylinder are respectively in clearance fit with the outer circle of the spline sleeve (17) and the inner hole in the middle of the lower centering clamp body (5).
9. The spline housing single tooth pulling clamp according to claim 8, wherein: the excircle of the spring jacket (7) is provided with a plurality of uniformly distributed vertical grooves.
10. The use method of the spline housing single-tooth pulling clamp according to any one of claims 1 to 9, characterized in that: firstly, a lower centering fixture is installed on a broaching machine rotary table (3), a gauge stand is fixed on a cutter guide column (2), the rotary broaching machine rotary table (3) is used for centering the center of the lower centering fixture, then the lower centering fixture is fixed on the broaching machine rotary table (3) by using a screw (4), then a spline sleeve (17) is installed in the lower centering fixture, under the self-weight action of the spline sleeve (17), an outer cone at the lower part of the spline sleeve (17) is attached to an inner cone of a lower cone sleeve (6), an outer circle at the middle part is attached to a spring jacket (7), and finally a round nut (10) is driven to move downwards by rotating a handle (9), so that the spring jacket (7) can position and clamp the spline sleeve (17); firstly, an upper centering fixture is arranged in a cutter guide column (2), a bearing (12) is positioned on a spline sleeve (17), then a screw (13) is locked to enable the upper centering fixture to be fixed on the cutter guide column (2), then a gauge stand is fixed on the spline sleeve (17), a broaching machine moving workbench (1) is adjusted, a rotary broaching machine rotary workbench (3) is rotated to perform gauge alignment, the distribution center of a plurality of bearings (12) on the upper centering fixture is coincided with the center of the broaching machine rotary workbench (3), then the screw (13) is loosened to enable the upper centering fixture to descend along the cutter guide column (2), the bearing (12) is enabled to be in contact with an inner hole in the upper portion of the spline sleeve (17), and finally the screw (13) is locked to enable the upper centering fixture to be fixed on the cutter guide column (2) for tooth broaching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110680028.4A CN113305351A (en) | 2021-06-18 | 2021-06-18 | Spline sleeve single-tooth pulling clamp and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110680028.4A CN113305351A (en) | 2021-06-18 | 2021-06-18 | Spline sleeve single-tooth pulling clamp and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113305351A true CN113305351A (en) | 2021-08-27 |
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| CN202110680028.4A Pending CN113305351A (en) | 2021-06-18 | 2021-06-18 | Spline sleeve single-tooth pulling clamp and using method thereof |
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| CN203330753U (en) * | 2013-06-30 | 2013-12-11 | 河南广瑞汽车部件股份有限公司 | Elastic centering clamp of intermittent outer circle workpiece |
| CN204449988U (en) * | 2014-12-12 | 2015-07-08 | 安徽白兔湖动力股份有限公司 | Thin wall cylinder cover bore hole air clamper |
| CN105537982A (en) * | 2014-10-30 | 2016-05-04 | 陕西天财工程造价咨询有限公司 | Self-centering clamp for sleeve parts |
| CN205519738U (en) * | 2016-01-20 | 2016-08-31 | 昆明理工大学 | Expanding line -up clamp in rubber |
| KR101672803B1 (en) * | 2016-05-03 | 2016-11-16 | 한국케이지 주식회사 | A windows processing machine of a car bearing |
| CN107234464A (en) * | 2017-07-31 | 2017-10-10 | 江南工业集团有限公司 | Shape locating and machining clamping device in a kind of thin_wall cylinder part is complicated |
| CN107378133A (en) * | 2017-09-13 | 2017-11-24 | 泰尔重工股份有限公司 | A kind of method of single monodentate broaching machine and spline housing internal spline of broaching |
| CN213003802U (en) * | 2020-08-11 | 2021-04-20 | 泰尔重工股份有限公司 | Upper centering device for broaching machine |
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- 2021-06-18 CN CN202110680028.4A patent/CN113305351A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013170475A1 (en) * | 2012-05-18 | 2013-11-21 | 浙江联宜电机股份有限公司 | Expanding and tightening clamping tool |
| CN103240620A (en) * | 2013-05-19 | 2013-08-14 | 苏州***仪器有限公司 | Elastic clamp |
| CN203330753U (en) * | 2013-06-30 | 2013-12-11 | 河南广瑞汽车部件股份有限公司 | Elastic centering clamp of intermittent outer circle workpiece |
| CN105537982A (en) * | 2014-10-30 | 2016-05-04 | 陕西天财工程造价咨询有限公司 | Self-centering clamp for sleeve parts |
| CN204449988U (en) * | 2014-12-12 | 2015-07-08 | 安徽白兔湖动力股份有限公司 | Thin wall cylinder cover bore hole air clamper |
| CN205519738U (en) * | 2016-01-20 | 2016-08-31 | 昆明理工大学 | Expanding line -up clamp in rubber |
| KR101672803B1 (en) * | 2016-05-03 | 2016-11-16 | 한국케이지 주식회사 | A windows processing machine of a car bearing |
| CN107234464A (en) * | 2017-07-31 | 2017-10-10 | 江南工业集团有限公司 | Shape locating and machining clamping device in a kind of thin_wall cylinder part is complicated |
| CN107378133A (en) * | 2017-09-13 | 2017-11-24 | 泰尔重工股份有限公司 | A kind of method of single monodentate broaching machine and spline housing internal spline of broaching |
| CN213003802U (en) * | 2020-08-11 | 2021-04-20 | 泰尔重工股份有限公司 | Upper centering device for broaching machine |
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