CN202845690U - Nut machining device for ball screw - Google Patents
Nut machining device for ball screw Download PDFInfo
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- CN202845690U CN202845690U CN 201220561093 CN201220561093U CN202845690U CN 202845690 U CN202845690 U CN 202845690U CN 201220561093 CN201220561093 CN 201220561093 CN 201220561093 U CN201220561093 U CN 201220561093U CN 202845690 U CN202845690 U CN 202845690U
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Abstract
The utility model provides a nut machining device for a ball screw. Operation efficiency of replacement of blank of a nut of the nut machining device for the ball screw is high. Even under the condition that an aperture of the nut is small or the diameter of a ball or a groove of a large-scale nut which is recycled is large, an 'S' groove can also be forged on the nut blank. According to the nut machining device for the ball screw, only a punch (4) is inserted inside the nut blank (W), and a first sliding part (5) and a second sliding part (14) bear the two ends of the punch and are driven by a first falling cam (11) and a second falling cam (12) to press the punch towards the inner circumference of the nut blank (W) to form the 'S' groove. In addition, the second sliding part (14) which bears the upper end of the punch is arranged on a movable plate (13) at the side of a sliding block (2). The movable plate (13) and the sliding block (2) separate towards the position above a base plate (1), and therefore, the sliding block is only needed to be lifted, the side of the movable plate (13) of a work piece limiting portion (3) or the side of a second sliding block (14).
Description
Technical field
The utility model relates to the nut that is suitable for for the ball-screw of the machineries such as automobile component or positioner, particularly relates to the manufacturing installation of the nut that consists of this ball-screw.
Background technology
Ball-screw possesses: nut, and side face is formed with helicla flute within it; Lead screw shaft is formed with helicla flute at its outer peripheral face; A plurality of balls, it is configured between the track that the helicla flute by the helicla flute of nut and lead screw shaft forms; And the ball return path, it makes these balls turn back to starting point from the terminal point of track, and this ball-screw is the device that rolls nut is relatively moved with respect to lead screw shaft in described track by ball.
In addition, the ball return path of ball-screw has the variety of ways such as circulation pipe mode and cover plate mode, as described in patent documentation 1 for example, also proposes to have the mode that directly forms the recess (ball circulating groove) that consists of the ball return path at the inner peripheral surface of nut.
Particularly, in the nut part of this ball-screw, week upwards do not have divisional plane and forming, the inner peripheral surface of nut part form the ball return path that has than the long S word shape of the part of female helicla flute (ball rolling groove) dark (protruding to radial direction foreign side) (below, be also referred to as " S groove "), utilize this S groove to connect swimmingly female spiral fluted two ends.
Here, as the technology that can form S groove as described above, considered following method: for example nut blank cylindraceous is configured to make axially along vertical direction, under the state that has limited outer peripheral face and an axial end face, supporting shell and drift are inserted in the nut blank, utilize cam part to make and be inserted into inner drift moved and pressed against inner peripheral surface (having adopted the forging processing method of drift) from the nut blank to the radial outside of nut blank.
In addition, other method as forming the S groove shown in for example patent documentation 2, also can directly form ball return path (having adopted the forging processing method of mandrel (arbor)) at the inner peripheral surface of nut blank by plastic working.As shown in Figure 6, adopt the forging processing method of this axle to adopt the mould that possesses columned processing head 30, described columned processing head 30 has the convex strip portions 37,38 of the S word shape corresponding with the shape of the ball return path that should form.
And, become following state: with nut blank W laterally (axially along horizontal direction ground) be placed on the platform 200, make convex strip portions 37,38 up processing head 30 be put into the inside of nut blank W, and fixed base end 30a and terminal part 30b(should scheme (a)).Then, the upper member 20 of mould is exerted pressure and make its decline.Thus, convex strip portions 37,38 is pressed against the inner peripheral surface W1 of nut blank W and make the inner peripheral surface W1 plastic deformation of nut blank 1 and form S groove 17,18(should scheme (b)).
Patent documentation 1: TOHKEMY 2003-307263 communique
Patent documentation 2: TOHKEMY 2008-281063 communique
The utility model content
But ball-screw (nut) has various sizes according to purposes, if corresponding to little journal axle, then nut also is path, and if the diameter of the ball that circulates is large, then the length of the S groove of corresponding nut is also long.Therefore, the length of S groove is the size of left and right sides processing head and drift also, for the diameter holes at small-sized nut blank forges large S groove, in the forging processing method that adopts above-mentioned drift, there is such problem: supporting shell, drift and cam part must be configured in the hole of nut blank and make its action, but supporting shell etc. can't be set, can't forge desirable S groove.In addition, also have such problem: if will be only forge at a distolateral supporting drift of the length direction of nut blank, then drift becomes cantilever position, thereby strength decreased.
On the other hand, in the forging processing method of the employing mandrel in above-mentioned patent documentation 2, if only with processing head 30(drift) be configured in the hole of nut, then can move, insert operation, processing head 30(drift but nut blank of every processing need to carry out the extraction of nut blank) extraction insert operation and be positioned over make processing head 30(drift) the mechanism that moves up and down of two ends in such operation.Therefore, productivity is low, thereby the leeway that still is improved.
Therefore, the utility model is conceived to just such problem and finishes, its purpose is to provide a kind of nut manufacturing installation, the replacing operating efficiency of its nut blank is higher, even in the smaller situation of the size in the aperture of nut or the nut of the larger specification of the diameter of the ball (groove) that circulates, also can forge the S groove at the nut blank.
In order to solve above-mentioned problem, the ball-screw of a mode of the present utility model uses the nut manufacturing installation for the manufacture of nut, described nut consists of ball-screw with lead screw shaft and a plurality of ball, and have at inner peripheral surface and to make described a plurality of ball turn back to the ball return path of starting point from the terminal point of roller track, described ball-screw is characterised in that with the nut manufacturing installation, it possesses pressure mechanism, described pressure mechanism has backing plate and slide block, described slide block can be relatively up or down arranged opposite above this backing plate, be provided with in described backing plate side: workspace limits parts cylindraceous, it is fixed in the upper surface of described backing plate, is used for limiting outer peripheral face and an axial end face of nut blank cylindraceous; Drift, its lower openings hole from described workspace limits parts is inserted in the described nut blank, and has convex strip portions at outer peripheral face, and described convex strip portions is used to form described ball return path; And first sliding part, it is the attitude that stands on the described backing plate that its lower end of supporting described drift makes described drift, and this first sliding part flexibly is arranged to can be towards the movement that radially slides of described nut blank, be provided with in described slide block side: the first decline cam and the second decline cam, its lower surface from described slide block hangs down; Movable platen, it is can flexibly be arranged on along the mode that axially moves up and down of described workspace limits parts the lower surface of described slide block; And second sliding part, it is arranged at this movable platen, the upper end that the chimeric support holes of utilization and described drift supports described drift, and flexibly being arranged to can be towards the movement that radially slides of described nut blank, drop to the bearing position of the first predetermined altitude to described backing plate side at described slide block, the height of being failure to actuate at described the first decline cam and the second decline cam, the support holes of the second sliding part and the upper end of described drift are chimeric, drop to the forging position of the second predetermined altitude to described backing plate side at described slide block, described the first decline cam makes described the first sliding part slide mobile towards the radial outside of described nut blank, and it is synchronously mobile towards the radial outside slip of described nut blank that described the second decline cam moves the slip by means of described the first decline cam of described the second sliding part and described the first sliding part, thereby the described drift that will insert in the described nut blank moves to the radial outside of described nut blank, make described nut blank produce plastic deformation, form thus described ball return path.
According to the ball-screw of a mode of the present utility model nut manufacturing installation, the parts that are inserted in the nut blank only are the drifts that has the convex strip portions that is used to form the ball return path at outer peripheral face, the first and second sliding parts are the structure at the two ends of this drift of supporting, therefore even in the smaller situation of the size in the aperture of nut or the nut of the larger specification of the diameter of the ball (groove) that circulates, also can forge the S groove at the nut blank.
And, the second sliding part of the upper end of the support holes supporting drift that utilization and drift are chimeric is arranged at the movable platen of slide block side, the coexist top of backing plate of this movable platen and slide block one relatively moves up and down, therefore, as long as slide block (movable platen) is risen, then can open the movable platen side (the second sliding part side) of workspace limits parts.Therefore, can become can be from the structure of the movable platen side of workspace limits parts plug nut blank, thus with for example employing described in the above-mentioned patent documentation 2 the forging processing method of mandrel compare, the replacing operating efficiency of nut blank is higher.
Here, use in the nut manufacturing installation at the ball-screw of a mode of the present utility model, described slide block move to upward away from the replacing position, change the position at this, described movable platen is in can be with respect to the transport disengaging height of described workspace limits parts plug nut blank, if as above structure is being preferred thereby further improve easily aspect the efficient of changing operation in the plug that makes the nut blank.
In addition, use in the nut manufacturing installation at the ball-screw of a mode of the present utility model, in described forging position, described the first decline cam is pressed described the first sliding part makes its radial outside towards described nut blank slide mobile, and described the second decline cam is pressed the radial outside that described the second sliding part moves synchronously towards described nut blank the slip by means of described the first decline cam of itself and described the first sliding part and is slided mobile, if as above structure is then all utilized described the first and second decline cams to press cam and the structure aspects of synchronization action is preferred becoming.
In addition, use in the nut manufacturing installation at the ball-screw of a mode of the present utility model, in described forging position, described the first decline cam is pressed described the first sliding part makes its radial outside towards described nut blank slide mobile, and described the second decline cam is drawn the radial outside that described the second sliding part moves synchronously towards described nut blank the slip by means of described the first decline cam of itself and described the first sliding part over to one's side and is slided mobile, if as above structure then utilizes that to press that cam consists of the first decline cam and utilize the tractive cam to make the structure aspects of the second decline cam synchronization action be preferred becoming.
In addition, use in the nut manufacturing installation at the ball-screw of a mode of the present utility model, the first decline cam that replacement is hung down from the lower surface of described slide block, in described backing plate side so that the first rising cam can be set towards the mode that described slide block side moves up and down, when this first rising cam is risen, utilize this first rising cam to make described the first sliding part slide mobile towards the radial outside of described nut blank, even be as above structure, also described drift can be moved to the radial outside of described nut blank and make described nut blank produce plastic deformation, thereby form described ball return path.
In addition, the ball-screw of a mode of the present utility model with the nut manufacturing installation in, if described the first decline cam and described the second decline cam are made by the parts of one, be preferred making synchronism aspect reliable then.
As mentioned above, according to the utility model, the replacing operating efficiency of nut blank is higher, even in the smaller situation of the size in the aperture of nut or the nut of the larger specification of the diameter of the ball (groove) that circulates, also can forge the S groove at the nut blank.
Description of drawings
Fig. 1 is the figure that the ball-screw of an explanation mode of the present utility model is used an embodiment of nut manufacturing installation, this figure (a) is its whole schematic diagram (position is forged in expression), (b) being arrow A direction view among this figure (a), (c) is the cutaway view along the B-B line among this figure (b).
Fig. 2 is the overall schematic (position is changed in expression) that the ball-screw of an explanation mode of the present utility model is used an embodiment of nut manufacturing installation.
Fig. 3 is the overall schematic (expression bearing position) that the ball-screw of an explanation mode of the present utility model is used an embodiment of nut manufacturing installation.
Fig. 4 is the ball-screw of an expression mode of the present utility model with the overall schematic (position is forged in expression) of the variation (the first variation) of an embodiment of nut manufacturing installation.
Fig. 5 is the ball-screw of an expression mode of the present utility model with the major part schematic diagram (position is forged in expression) of the variation (the second variation) of an embodiment of nut manufacturing installation.
Fig. 6 is the disclosed schematic diagram that has adopted the forging processing method of mandrel in the explanation patent documentation 2.
Label declaration
1: backing plate;
2: slide block;
3: the workspace limits parts;
4: drift;
5: the first sliding parts;
6: receiving portion;
7: fixed head;
11: the first decline cams;
12: the second decline cams;
13: movable platen;
14: the second sliding parts;
H1: the first predetermined altitude;
H2: the second predetermined altitude;
K: change the position;
R: transport disengaging height;
S: bearing position;
T: forge the position;
W: nut blank.
The specific embodiment
Below, suitably with reference to accompanying drawing an embodiment of the present utility model is described.In addition, the ball-screw of present embodiment uses the nut manufacturing installation for the manufacture of nut, described nut consists of ball-screw with lead screw shaft and a plurality of ball, and have at inner peripheral surface and to make described a plurality of ball turn back to the ball return path of starting point from the terminal point of roller track, but this ball-screw itself is identical with above-mentioned known structure, therefore omits the explanation to ball-screw itself.
As shown in Figure 1, nut manufacturing installation and the UP device of present embodiment similarly possess pressure mechanism, and described pressure mechanism has backing plate 1 and slide block 2, described slide block 2 can be relatively up or down arranged opposite above this backing plate 1.
Be provided with workspace limits parts 3 cylindraceous, columned drift 4 and the first sliding part 5 in backing plate 1 side.
The first sliding part 5 is supported to the lower end 4s of drift 4 and makes drift 4 stand in attitude on the backing plate 1.In addition, this first sliding part 5 is retained and can slides mobile with respect to fixed head 7 by means of sliding guide.Particularly, in this sliding guide, such as (b) of Fig. 1 with (c), about fixed head 7, be formed with the installing hole 7k that overlooks as rectangle, along the nut blank W of this installing hole 7k radially, be formed with opposed to each other respectively the maintenance groove 7c of concavity with the two sides of the first sliding part 5.With respect to this, be formed with in the two sides of the first sliding part 5 with the small with gap raised line 5c chimeric with the maintenance groove 7c of fixed head 7, thus, the first sliding part 5 can be towards the movement that radially slides of nut blank W with respect to fixed head 7.And the base end part of the first sliding part 5 utilizes spring 5a and flexibly is arranged at fixed head 7, and all the time by towards the first decline cam 11 side application of forces.When the first decline cam 11 was in the position of leaving the first sliding part 5, the first sliding part 5 utilized the active force of spring 5a and is positioned in preposition with not shown stop part butt.And, being formed with the cam surface 5b that is consisted of by the inclined-plane at the end of this first sliding part 5, this cam surface 5b is configured in the precalculated position opposed with the cam surface 11a that is made of the inclined-plane of the end that is formed at the first decline cam 11.
On the other hand, be provided with movable platen 13 and the second sliding part 14 and the first decline cam 11 and the second decline cam 12 in slide block 2 sides.
The second sliding part 14 has the support holes 14b chimeric with the upper end 4u of above-mentioned drift 4.And, utilize the upper end 4u of this support holes 14b supporting drift 4, and utilize spring 14a flexibly to be arranged at movable platen 13, make it possible to move towards radially sliding at movable platen 13 of nut blank W.In addition, the sliding guide of the second sliding part 14 also sliding guide with above-mentioned the first sliding part 5 is identical, therefore omit diagram (namely, offer the installing hole of overlooking as rectangle at movable platen 13, along the nut blank W of this installing hole radially, be formed with opposed to each other respectively the maintenance groove of concavity with the two sides of the second sliding part 14, be formed with in the two sides of movable platen 13 with the small with gap raised line chimeric with the maintenance groove of fixed head 7, thus, the second sliding part 14 can be towards the movement that radially slides of nut blank W with respect to movable platen 13.）。
And, being formed with the cam surface 14c that is consisted of by the inclined-plane at the end of this second sliding part 14, this cam surface 14c is configured in the precalculated position opposed with the cam surface 12a that is made of the inclined-plane of the end that is formed at the second decline cam 12.
The first decline cam 11 and the second decline cam 12 are made by parts independently respectively, and the lower surface 2a from slide block 2 hangs down respectively.And the cam surface 11a of the end of the first decline cam 11 utilizes the down maneuver of slide block 2 and presses the cam surface 5b of above-mentioned the first sliding part 5, thus, makes above-mentioned the first sliding part 5 slide mobile in the moment of predefined expection.Similarly, the cam surface 12a of the end of the second decline cam 12 utilizes the down maneuver of slide block 2 and presses the cam surface 14c of above-mentioned the second sliding part 14, thus, makes above-mentioned the second sliding part 14 slide mobile in the moment of predefined expection.
Here, in this nut manufacturing installation, slide block 2 moves up and down, and changes position K, bearing position S and forges position T thereby slide block 2 lays respectively at respect to backing plate 1.
That is, as shown in Figure 2, the slide block 2 of this nut manufacturing installation is moved upward enough replacing position K far away, changes position K at this, and the transport disengaging height R of movable platen 13 is the height that nut blank W is plugged easily with respect to workspace limits parts 3.
And, in the decline way of slide block 2, as shown in Figure 3, slide block 2 is bearing position S to the height that backing plate 1 side drops to the first predetermined altitude H1, at this bearing position S, at the height that the first decline cam 11 and the second decline cam 12 not yet move, the upper end 4u of the support holes 14b of the second sliding part 14 and drift 4 is chimeric, thus, become the state that the two ends of drift 4 are supported.
Here, in above-mentioned backing plate 1 side, also be provided with receiving portion 6 at fixed head 7 upper surfaces, shown in Fig. 1 (b), this receiving portion 6 is separately positioned on four jiaos of fixed head 7 upper surfaces, with vertical being located on the backing plate 1 of predetermined altitude by means of the mobile starting position coupling of the second decline cam 12 by means of the mobile starting position of the first decline cam 11 and the second sliding part 14 of the first sliding part 5.The function of receiving portion 6 is: supporting movable platen 13, and the fixing height of movable platen 13, thus, the cam mechanism of pressing of above-mentioned the second decline cam 12 moved according to the moment of predefined expection.In addition, as mentioned above, because movable platen 13 utilizes spring 13a can flexibly being arranged at slide block 2 along the mode axial moving up and down of workspace limits parts 3, therefore, movable platen 13 keeps constant with the interval of slide block 2, until movable platen 13 and receiving portion 6 butts.In addition, spring 13a relax slide block 2 from bearing position S further descend, the impact of movable platen 13 during with receiving portion 6 butt, and with respect to 6 pairs of movable platen 13 application of forces of receiving portion.Thus, make the movable platen 13 behind the butt keep stable state.
And, as shown in Figure 1, slide block 2 drops to the height of the second predetermined altitude H2 for forging position T to backing plate 1 side, forge position T at this, be the identical moment and slip amount of movement by making the above-mentioned moment of pressing the predefined expection of cam mechanism, and make the first decline cam 11 and the second decline cam 12 equal synchronization actions.
Namely, the first decline cam 11 is pressed the first sliding part 5, make its radial outside towards nut blank W slide mobile, and, the second decline cam 12 is pressed the second sliding part 14, make the slip by means of the first decline cam 11 of itself and the first sliding part 5 move synchronously radial outside towards nut blank W and slide mobilely, move to the radial outside of nut blank W and make nut blank W plastic deformation thereby will be inserted into drift 4 in the nut blank W, form thus described ball return path.
Below, action and the effect thereof of this nut manufacturing installation described.
In this nut manufacturing installation, at first, the operator moves to enough replacing position R(far away with reference to Fig. 2 with slide block 2 to the top of backing plate 1), change position R at this, carry out the plug of nut blank W with respect to workspace limits parts 3.Then, the operator is positioned over workspace limits parts 3 with nut blank W, then driving pressure mechanism and slide block 2 is moved to the opposed direction of backing plate 1.
When slide block 2 moved to the opposed direction of backing plate 1, originally, slide block 2 dropped to the first predetermined altitude H1 and becomes bearing position S(with reference to Fig. 3).At this bearing position S, at the height that the first decline cam 11 and the second decline cam 12 not yet move, the upper end 4u of the support holes 14b of the second sliding part 14 and drift 4 is chimeric.Therefore, become the state that the two ends of drift 4 are supported.
Then, slide block 2 further moves to the opposed direction of backing plate 1, slide block 2 drop to the second predetermined altitude H2 and be positioned at forge position T(with reference to Fig. 1).Thus, as mentioned above, the first decline cam 11 makes the first sliding part 5 slide mobile towards the radial outside of nut blank W, and it is synchronously mobile towards the radial outside slip of nut blank W that the second decline cam 12 moves the slip by means of the first decline cam 11 of the second sliding part 14 and the first sliding part 5, therefore will be inserted into the radial outside that the interior drift 4 of nut blank W moves to nut blank W, the convex strip portions 4b of S word shape is pressed against the inner peripheral surface of nut blank W and makes nut blank W plastic deformation, can form at the inner peripheral surface of nut blank W described ball return path (S groove) thus.
Like this, according to this nut manufacturing installation, as shown in Figure 2, the parts that are inserted in the nut blank W only are the columned drifts 4 that has the convex strip portions 4b of S word shape at outer peripheral face 4a, the convex strip portions 4b of described S word shape is used to form the ball return path, at bearing position S shown in Figure 3, the first and second sliding parts 5,14 for supporting respectively the two ends 4u of drift 4, the structure of 4s, therefore, even in the smaller situation of the size in the aperture of nut, or the nut of the larger specification of the diameter of the ball that circulates (groove), also can forge at the inner peripheral surface of nut blank W desirable S groove.
And, according to this nut manufacturing installation, utilize the movable platen 13 that is arranged at slide block 2 sides with the second sliding part 14 of the upper end 4u of the chimeric support holes 14b supporting drift 4 of drift 4, the top of backing plate 1 relatively moves up and down because this movable platen 13 and slide block 2 one coexist, therefore, as long as make slide block 2(movable platen 13) rise, then as shown in Figure 2, can open movable platen 13 sides (the second sliding part 14 sides) of workspace limits parts 3.
Particularly in the present embodiment, at replacing position R shown in Figure 2, movable platen 13 is in and can therefore plugs easily nut blank W with respect to the transport disengaging height R of workspace limits parts 3 plug nut blank W, can improve the efficient of changing operation.Therefore, compare with for example above-mentioned patent documentation 2 described forging processing methods of mandrel that adopted, the replacing operating efficiency of nut blank is higher.
In addition, ball-screw of the present utility model is not limited to above-mentioned embodiment with the nut manufacturing installation, only otherwise break away from purport of the present utility model, then can carry out various distortion.
For example, in the above-described embodiment, forging position T, all the structure example of synchronization action is illustrated by means of pressing cam to making the first decline cam 11 and the second decline cam 12, but be not limited to this, as variation for example shown in Figure 4, forging position T, also can be following structure: the first decline cam 11 is pressed the first sliding part 5, make its radial outside towards nut blank W slide mobile, and the second decline cam 12 is drawn the radial outside that the second sliding part 14 moves synchronously towards nut blank W the slip by means of the first decline cam 11 of itself and the first sliding part 5 over to one's side and is slided mobile, if such structure then utilizes that to press that cam consists of the first decline cam 11 and utilize the tractive cam to make the structure aspects of the second decline cam 12 synchronization actions be preferred becoming.
In addition, in above-mentioned embodiment for example, adopt respectively the example of making the first decline cam 11 and the second decline cam 12 by individual components to be illustrated, but be not limited to this, also can adopt the parts of one to make the first decline cam 11 and the second decline cam 12.If this structure is preferred making synchronism aspect reliable then.
In addition, in above-mentioned embodiment for example, employing all is arranged on slide block 2 sides with the first decline cam 11 and the second decline cam 12 and makes direction of action is that the example of descent direction is illustrated, but be not limited to this, for example, variation as shown in Figure 5 is such, the first decline cam 11 that replacement is hung down from the lower surface 2a of slide block 2, and in backing plate 1 side, the first rising cam 11 is arranged to and can be moved up and down towards slide block 2 sides, this the first rising cam 11 is risen make the first sliding part 5 slide mobile towards the radial outside of nut blank W, even be as above structure, also drift 4 can be moved to the radial outside of nut blank W and make nut blank W plastic deformation, thereby form ball return path (S groove).
Claims (10)
1. ball-screw nut manufacturing installation, it is for the manufacture of nut, described nut consists of ball-screw with lead screw shaft and a plurality of ball, and have at inner peripheral surface and to make described a plurality of ball turn back to the ball return path of starting point from the terminal point of roller track, described ball-screw is characterised in that with the nut manufacturing installation
It possesses pressure mechanism, and described pressure mechanism has backing plate and slide block, described slide block can be relatively up or down arranged opposite above this backing plate,
Be provided with in described backing plate side: workspace limits parts cylindraceous, it is fixed in the upper surface of described backing plate, is used for limiting outer peripheral face and an axial end face of nut blank cylindraceous; Drift, its lower openings hole from described workspace limits parts is inserted in the described nut blank, and has convex strip portions at outer peripheral face, and described convex strip portions is used to form described ball return path; And first sliding part, it is the attitude that stands on the described backing plate that its lower end of supporting described drift makes described drift, and this first sliding part flexibly be arranged to can be towards the movement that radially slides of described nut blank,
Be provided with in described slide block side: the first decline cam and the second decline cam, its lower surface from described slide block hangs down; Movable platen, it is can flexibly be arranged on along the mode that axially moves up and down of described workspace limits parts the lower surface of described slide block; And second sliding part, it is arranged at this movable platen, utilizes the upper end of supporting described drift with the chimeric support holes of described drift, and flexibly be arranged to can be towards the movement that radially slides of described nut blank,
Drop to the bearing position of the first predetermined altitude at described slide block to described backing plate side, at the height that described the first decline cam and the second decline cam are failure to actuate, the support holes of the second sliding part and the upper end of described drift are chimeric,
Drop to the forging position of the second predetermined altitude to described backing plate side at described slide block, described the first decline cam makes described the first sliding part slide mobile towards the radial outside of described nut blank, and it is synchronously mobile towards the radial outside slip of described nut blank that described the second decline cam moves the slip by means of described the first decline cam of described the second sliding part and described the first sliding part, thereby the described drift that will insert in the described nut blank moves to the radial outside of described nut blank, make described nut blank produce plastic deformation, form thus described ball return path.
2. ball-screw according to claim 1 nut manufacturing installation is characterized in that,
Described slide block move to upward away from the replacing position, change the position at this, described movable platen is in can be with respect to the transport disengaging height of described workspace limits parts plug nut blank.
3. ball-screw according to claim 1 and 2 nut manufacturing installation is characterized in that,
In described forging position, described the first decline cam is pressed described the first sliding part, and that it is slided towards radial outside of described nut blank is mobile, and described the second decline cam is pressed described the second sliding part and made its slip by means of described the first decline cam with described the first sliding part move synchronously the movement of sliding of radial outside towards described nut blank.
4. ball-screw according to claim 1 and 2 nut manufacturing installation is characterized in that,
In described forging position, described the first decline cam is pressed described the first sliding part, and that it is slided towards radial outside of described nut blank is mobile, and described the second decline cam is drawn described the second sliding part over to one's side and made its slip by means of described the first decline cam with described the first sliding part move synchronously the movement of sliding of radial outside towards described nut blank.
5. ball-screw according to claim 1 and 2 nut manufacturing installation is characterized in that,
The first decline cam that replacement is hung down from the lower surface of described slide block, in described backing plate side so that the first rising cam can be set towards the mode that described slide block side moves up and down, when this first rising cam is risen, utilize this first rising cam to make described the first sliding part slide mobile towards the radial outside of described nut blank.
6. ball-screw according to claim 3 nut manufacturing installation is characterized in that,
The first decline cam that replacement is hung down from the lower surface of described slide block, in described backing plate side so that the first rising cam can be set towards the mode that described slide block side moves up and down, when this first rising cam is risen, utilize this first rising cam to make described the first sliding part slide mobile towards the radial outside of described nut blank.
7. ball-screw according to claim 4 nut manufacturing installation is characterized in that,
The first decline cam that replacement is hung down from the lower surface of described slide block, in described backing plate side so that the first rising cam can be set towards the mode that described slide block side moves up and down, when this first rising cam is risen, utilize this first rising cam to make described the first sliding part slide mobile towards the radial outside of described nut blank.
8. ball-screw according to claim 1 and 2 nut manufacturing installation is characterized in that,
Described the first decline cam and described the second decline cam are made by the parts of one.
9. ball-screw according to claim 3 nut manufacturing installation is characterized in that,
Described the first decline cam and described the second decline cam are made by the parts of one.
10. ball-screw according to claim 4 nut manufacturing installation is characterized in that,
Described the first decline cam and described the second decline cam are made by the parts of one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-252942 | 2011-11-18 | ||
| JP2011252942A JP5899857B2 (en) | 2011-11-18 | 2011-11-18 | Ball screw nut manufacturing equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202845690U true CN202845690U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220561093 Expired - Lifetime CN202845690U (en) | 2011-11-18 | 2012-10-29 | Nut machining device for ball screw |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP5899857B2 (en) |
| CN (1) | CN202845690U (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5756522U (en) * | 1980-09-18 | 1982-04-02 | ||
| US4802393A (en) * | 1986-11-04 | 1989-02-07 | Ecological Systems, Inc. | Piercing die |
| JP2000202526A (en) * | 1999-01-06 | 2000-07-25 | Nikon Corp | Bending device |
| JP5817184B2 (en) * | 2010-04-05 | 2015-11-18 | 日本精工株式会社 | Manufacturing method of nut for ball screw |
-
2011
- 2011-11-18 JP JP2011252942A patent/JP5899857B2/en active Active
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2012
- 2012-10-29 CN CN 201220561093 patent/CN202845690U/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP5899857B2 (en) | 2016-04-06 |
| JP2013107095A (en) | 2013-06-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130403 |