CN207621282U - The transmission connecting structure of ball screw - Google Patents

Abstract

The utility model is a kind of transmission connecting structure of ball screw, including：There is one screw rod a shoulder, the shoulder to have an extended segment and an external thread section；One bearing group is fixed in the extended segment of the shoulder, and has a bearing side；One belt pulley, it is fixed in the shoulder, and with one by being against the first side of the bearing side, a second side, one being located at reinforcement part between first and second side, one be located at gear part between the reinforcement part and the second side and one run through the perforation of first and second side, which is nested with the internal thread segment that the external thread section is screwed in the straight hole section of the extended segment and one with one.Accordingly, the structural strength that can increase the screw rod shoulder, reduces the problem of the shoulder stress unevenness of screw rod, while avoiding precision reduction and causing the problem of concentricity deficiency.

Description

The transmission connecting structure of ball screw

Technical field

The utility model is related with ball screw, particularly relates to a kind of transmission connecting structure of ball screw.

Background technology

Refering to fig. 1 shown in A, wherein the one of display TaiWan, China No. 105112679 one kind of patent application " the online structure in side " Attached drawing；Main application is in the online structure in the side of linear block and motor drive shaft, including a bearing block 11, a fastener 12 and one Belt pulley set 13.Bearing block 11 is fixed on linear block 14 and includes the bearing 141 being arranged on.12 connecting line of fastener Property module and against aforementioned bearings 141 and it is installed in aforementioned axis bearing 11.Belt pulley set 13 is installed in fastener 12 and motor Axis (not showing on figure) is used to drive fastener 12 to rotate and interlocks linear block by fastener 12.However, under it at least has State the defect that need to improve.

The first, since belt pulley 131 is to be arranged on the screw rod 142 indirectly, that is, elder generation is in the shoulder of the screw rod 142 After 1421 are arranged the fastener 12, which is nested with again is fixed on the fastener 12, so as to same dynamic with the screw rod 142, separately Outside, in order to increase the structural strength of 142 shoulder 1421 of screw rod, a nut 15 is more set on the shoulder 1421 of the screw rod 142, In this way, though the setting of the belt pulley 131, fastener 12 and nut 15 reaches gearing and increases the strong of 142 shoulder 1421 of screw rod Degree, but since component is excessive, cause the defect that cost of parts is high and assembling is time-consuming.

The second, due between nut 15 and fastener 12 set on the shoulder 1421 of the screw rod 142 and the nut All there is gap therefore to cause the unbalanced stress suffered by the shoulder 1421 of the screw rod 142 between 15 and bearing 143.

Refering to fig. 1 shown in B, TaiWan, China No. 104220269 one kind " power continued access of ball screw of patent application is shown A wherein attached drawing for construction "；It is mainly connected by exempting from 16 certain tight beam of ball screw that keyed connecting shaft structure processes no end Knot, and then power input equipment string knot is made to carry out continued access power in another side, achieve the purpose that certain power transmits.However, its At least there are following defects that need to improve.

The first, it is clamping in the ball screw 16 1 by 17 one end of adapter collocation nut 18 that this, which exempts from keyed connecting shaft structure, End, then the other end for being fixed in the adapter 17 is supported by bearing 191 and bearing block 192, finally the belt pulley 10 is nested with again It is fixed on adapter 17, in this way, not only component is excessive, and element structure is excessively complicated, equally causes cost of parts high and assembling Time-consuming defect.

The second, this, which exempts from keyed connecting shaft structure, is clamped at the ball screw 16 of no end processing, however the continued access Device 17 is one end that the ball screw 16 is clamped in by the clamping part 171 arranged in claw type, finally solid by 18 sets of nut again The each clamping part 171 of packing, to reach the connection of the adapter 17 and the ball screw 16, and the clamping part arranged with claw type 171 modes for being clamped in the ball screw 16 can cause the center of the adapter 17 and the axle center of ball screw 16 to generate deviation, And then the problem of precision and concentricity occurs.

Utility model content

The purpose of this utility model is to provide a kind of transmission connecting structures of ball screw, mainly reduce assembling structure Part promotes installation effectiveness and reduces cost.

Another object of the present invention is to provide a kind of transmission connecting structure of ball screw, mainly reduces screw rod The problem of shoulder stress unevenness.

The utility model a further object is to provide a kind of transmission connecting structure of ball screw, mainly avoids reducing essence The problem of degree and concentricity.

To reach foregoing purpose, the utility model provides a kind of transmission connecting structure of ball screw, including：One screw rod, With a shoulder, which has an extended segment and an external thread section；One bearing group, is fixed in the extended segment of the shoulder, and has There is a bearing side；One belt pulley, is fixed in the shoulder, and the first side, one reversely with one by being against the bearing side In the first side second side, one be located at reinforcement part between first and second side, one be located at the reinforcement part and this second Gear part and one between side run through the perforation of first and second side, which is nested with the straight hole in the extended segment with one Section and one be screwed on the external thread section internal thread segment.

Accordingly, the transmission connecting structure of a kind of ball screw provided by the utility model, it is solid by the belt wheel case In the shoulder of the screw rod, so that the shoulder is coated with gear part by the reinforcement part of the belt pulley, the screw rod shoulder can be increased Structural strength reduces the problem of the shoulder stress unevenness of screw rod, while can promote installation by the belt pulley of solid memder Efficiency and cost is reduced, is more avoided that precision reduces and cause the problem of concentricity deficiency.

Preferably, wherein the belt pulley has more a locking part being located between the gear part and the second side, the lock Gu portion have one be connected to the gear part first locking segmental arc and one connection this first locking segmental arc and with the gear parts from Second locking segmental arc, this first locking segmental arc have one be set to the external thread section the first screw thread cambered surface and one first lock Gu face, which has second screw thread for combining or detaching in face of the first screw thread cambered surface and with the external thread section Section and one with first locking face paste second locking face for supporting or detaching, the transmission connecting structure of the ball screw is with more one Set screw, the set screw are arranged between the first and second locking segmental arc, to make the first and second locking face paste support or divide From and so that second thread segment and the external thread section is combined or is detached.

Preferably, wherein the first locking segmental arc is with more one by the recessed locking screw channel in the first locking face, this second The locking screw hole that locking segmental arc wears the second locking face and the corresponding locking screw channel with more one, which is to be arranged in Between the locking screw hole and the locking screw channel.

Preferably, wherein the shoulder of the screw rod connects the external thread section and the non-circular shaft part in cross section with more one； The transmission connecting structure of the ball screw have more positioning piece and at least two set screws, the locating piece be nested with the shaft part simultaneously It is resisted against the second side of the belt pulley, respectively the set screw is locking between the locating piece and the belt pulley.

Preferably, wherein with more at least two by the recessed positioning screw hole of the second side, which has the belt pulley There is a cross section in non-circular and be nested with the positioning for corresponding to each positioning screw hole in the positioning shaft hole of the shaft part and at least two and wear Hole, respectively the set screw is locking between the positioning screw hole and the positional punch.

Preferably, the radial screw hole that wherein belt pulley runs through the gear part with more one and communicated with the perforation, the rolling The transmission connecting structure of pearl screw rod has more a set screw, which is set to the radial direction screw hole, and is compressed with one It is stopped at the positioning surface of the external thread section.

In addition, being similarly up to foregoing purpose, in addition the utility model provides a kind of transmission connecting structure of ball screw, packet Contain：There is one screw rod a shoulder, the shoulder to have an extended segment and an external thread section；One bearing group is fixed in prolonging for the shoulder Section is stretched, and there is a bearing side；One reinforcement external member is fixed in the shoulder, and has a reinforcement by being against the bearing side Side, one be fixed in the extended segment reinforcement ring portion and one be fixed in the extended segment and at least two profile grooves clamping claw； One belt pulley is fixed between the shoulder and the reinforcement external member, and is in reverse to the of the first side with a first side, one Two side faces, one are located at the gear part between first and second side and a perforation between first and second side, the perforation The internal thread segment that the external thread section is screwed in the taper hole section of the clamping claw and one is nested with one.

Accordingly, the utility model provides a kind of transmission connecting structure of ball screw, is arranged in pairs or groups by the reinforcement external member The belt pulley is fixed in the shoulder of the screw rod, and the shoulder is made to be coated with the belt pulley by the reinforcement external member, uses and increases the spiral shell The structural strength of bar shoulder, reduces the problem of the shoulder stress unevenness of screw rod, while only being arranged in pairs or groups the belt by the reinforcement external member Wheel group is set, and is able to promote installation effectiveness and is reduced cost, is more avoided that precision reduces and cause the problem of concentricity deficiency.

Preferably, wherein the clamping claw of the reinforcement external member has an outer ring surface, the inclined gradually-reducing shape of the outer ring surface, the skin The taper hole section of belt wheel compresses the outer ring surface.

Preferably, wherein the belt pulley has more a locking part being located between the gear part and the second side, the lock Gu portion have one be connected to the gear part first locking segmental arc and one connection this first locking segmental arc and with the gear parts from Second locking segmental arc, this first locking segmental arc have one be set to the external thread section the first screw thread cambered surface and one first lock Gu face, which has second screw thread for combining or detaching in face of the first screw thread cambered surface and with the external thread section Section and one with first locking face paste second locking face for supporting or detaching, the transmission connecting structure of the ball screw is with more one Set screw, the set screw are arranged between the first and second locking segmental arc, to make the first and second locking face paste support or divide From and so that second thread segment and the external thread section is combined or is detached.

Preferably, wherein the first locking segmental arc is with more one by the recessed locking screw channel in the first locking face, this second The locking screw hole that locking segmental arc wears the second locking face and the corresponding locking screw channel with more one, which is to be arranged in Between the locking screw hole and the locking screw channel.

Description of the drawings

Figure 1A is a wherein attached drawing of No. 105112679 one kind of TaiWan, China patent application " the online structure in side "；

Figure 1B be No. 104220269 one kind of the TaiWan, China patent application power continued access of ball screw " construct " wherein One attached drawing；

Fig. 2 is the three-dimensional combination figure of the utility model first embodiment；

Fig. 3 is the stereogram exploded view of the utility model first embodiment；

Fig. 4 is the axial section of the utility model first embodiment；

Fig. 5 A are the radial cutaway views of the utility model first embodiment, show the shape that the locking part of belt pulley does not lock State；

Fig. 5 B are the radial cutaway views of the utility model first embodiment, show the state of the locking part locking of belt pulley；

Fig. 6 is the stereogram exploded view of the utility model second embodiment；

Fig. 7 is the three-dimensional combination figure of the utility model second embodiment；

Fig. 8 is the axial section of the utility model second embodiment；

Fig. 9 is the axial section of the utility model 3rd embodiment；

Figure 10 is the stereogram exploded view of the utility model fourth embodiment；

Figure 11 is the axial section of the utility model fourth embodiment.

Reference sign.

The prior art：

11 fastener 12 of bearing block

13 belt pulley 131 of belt pulley set

Bearing 141,143 screw rods 142

1421 nut 15 of shoulder

16 adapter 17 of ball screw

171 nut 18 of clamping part

191 bearing block 192 of bearing

Belt pulley 10.

The utility model：

When advise 21 drive motor 22 of belt

23 screw rod 30 of motor belt pulley

31 extended segment 311 of shoulder

312 shaft part 313 of external thread section

40 bearing side 41 of bearing group

50 first side 51 of belt pulley

52 reinforcement part 53 of second side

The perforation of gear part 54 55

551 internal thread segment 552 of straight hole section

553 locking part 56 of taper hole section

First locking 561 first screw thread cambered surface 5611 of segmental arc

First locking face 5612 locking screw channel 5613

Second locking 562 second thread segment 5621 of segmental arc

Second locking face 5622 locking screw hole 5623

57 radial direction screw hole 58 of positioning screw hole

60 positioning surface 61 of set screw

70 positioning shaft hole 71 of locating piece

72 reinforcement external member 80 of positional punch

81 reinforcement ring portion 82 of reinforcement side

83 profile groove 831 of claw is clamped

Outer ring surface 832.

Specific implementation mode

Before proposing to be described in detail, it is noted that, in the following description, similar component is to be identically numbered To indicate.

It please refers to shown in Fig. 2 to Fig. 5 B, the utility model first embodiment provides a kind of drive connection of ball screw Structure, be for by when rule belt 21 by with 23 be connected by power of motor belt pulley that is located in drive motor 22, the ball spiral shell The transmission connecting structure of bar is mainly made of a screw rod 30, a bearing group 40, a belt pulley 50 and a set screw 60, Wherein：

There is the screw rod 30 shoulder 31, the shoulder 31 to have an extended segment 311 and an external thread section 312.

The bearing group 40 is fixed in the extended segment 311 of the shoulder 31, and has a bearing side 41.

The belt pulley 50 is fixed in the shoulder 31, and anti-by being against the first side 51, one of the bearing side 41 with one It is located at this in the reinforcement part 53, one that the second side 52, one of the first side 51 is located between first and second side 51,52 Run through first and second side between reinforcement part 53 and the second side 52 and for the gear part 54 and one that rule belt 21 is nested with when this There is a straight hole section 551 and one being nested in the extended segment 311 to be screwed on the external screw thread for the perforation 55 in face 51,52, the perforation 55 The internal thread segment 552 of section 312；In the present embodiment, which is located at the gear part 54 and the second side 52 with more one Between locking part 56, the locking part 56 have a first locking segmental arc 561 and one for being connected to the gear part 54 connect this One locking segmental arc 561 and the second locking segmental arc 562 detached with the gear part 54, the first locking segmental arc 561 have a setting It is recessed by the first locking face 5612 in the first screw thread cambered surface 5611, one first locking face 5612 and one of the external thread section 312 Locking screw channel 5613, this second locking segmental arc 562 have one in face of the first screw thread cambered surface 5611 and with the external thread section 312 In conjunction with or separation the second thread segment 5621, one and the first locking face 5612 the second locking face 5622 for sticking to or detaching and One wears the locking screw hole 5623 of the second locking face 5622 and the corresponding locking screw channel 5613.In addition, in other embodiment party In formula, the second locking segmental arc 562 of the locking part 56 can be in the state detached with the first locking segmental arc 561.

The set screw 60 is arranged between the locking screw hole 5623 and the locking screw channel 5613, use be arranged in this One, two locking segmental arcs 561,562 between, to so that the first and second locking face 5612,5622 is sticked to or is detached and make this second Thread segment 5621 is combined or is detached with the external thread section 312.Shown in Fig. 5 A, show that the 60 non-packing of set screw locking should First and second locking segmental arc 561,562, at this time the first and second locking face 5612,5622 separated states and second thread segment 5621 with the 312 separated state of external thread section, and the belt pulley 50 then can screw out or screw in the screw rod 30 in this case.Ginseng Read shown in Fig. 5 B, show 60 packing of set screw lock this first and second locking segmental arc 561,562, at this time this first and second locking Face 5612,5622 is in bonding state in the state that sticks to and second thread segment 5621 and the external thread section 312 so that the locking Portion 56, which locks, is located in the external thread section 312 of the screw rod 30, and the belt pulley 50 is in then with dynamic with the screw rod 30 in this case State.

The above is the configuration explanation of each main member of the utility model first embodiment.As for the utility model Occupation mode and effect make the following instructions.

The first, it promotes installation effectiveness and reduces cost.In assembling, it is only necessary to which the belt pulley 50 is inserted in the shoulder of the screw rod 30 Portion 31 is screwed on the external thread section of the shoulder 31 by the guiding of straight hole section 551 of the belt pulley 50 and the internal thread segment 552 of arranging in pairs or groups 312 so that the belt pulley 50 is able to be securely positioned on the screw rod 30.Meanwhile it being taken by the locking part of the belt pulley 50 56 The belt pulley 50 is locked on the screw rod 30 with set screw 60, allows internal thread segment 552 and the screw rod 30 of the belt pulley 50 The more preferably close occlusion of the external thread section 312 of shoulder 31, with prevent drive motor 22 by when rule belt 21 drive the belt pulley 50 It causes to loosen when rotation.Accordingly, the structure design of the utility model, which to load onto in group, only needs a set screw 60 collocation spiral shell The design of bar 30 and belt pulley 50, you can allowing the belt pulley 50, firmly group is located on the shoulder 31 of the screw rod 30, can when true It promotes installation effectiveness and reduces cost.

The second, the problem of reducing by 31 unbalanced stress of shoulder of screw rod 30.After assembling due to the utility model, the belt pulley 50 straight hole section 551 can be nested with the outer spiral shell that the shoulder 31 can be screwed in the extended segment of the shoulder 31 311, the internal thread segment 552 Line section 312, while the first side 51 of the belt pulley 50 can be by being against the bearing side 41, and pass through 50 first side of belt pulley Face 51 and the perforation 55 have the precision of verticality, therefore the first side 51 of the belt pulley 50 can be by the bearing group 40 when screwing togather Bearing side 41 is fixed and clamped, in this way, the shoulder 31 of the screw rod 30 is then by the reinforcement part 53 of the belt pulley 50 and 54 institute of gear part The problem of cladding uses the structural strength for increasing by 30 shoulder 31 of screw rod, reduces by 31 unbalanced stress of shoulder of screw rod 30.

Third avoids the problem that reducing precision and concentricity.Due to the belt pulley 50 be by the straight hole section 551 guiding and The internal thread segment 552 of arranging in pairs or groups is screwed on the external thread section 312 of the shoulder 31 so that the belt pulley 50 is able to be located in the screw rod 30 On, therefore, it is possible to prevente effectively from the hole center of the perforation 55 of the belt pulley 50 and the axle center of the screw rod 30 generate deviation, energy when true Precision is enough avoided to reduce and cause the problem of concentricity deficiency.

4th, shorten length, reduce torque.After assembling due to the utility model, 551 meeting of straight hole section of the belt pulley 50 The external thread section 312 of the shoulder 31 can be screwed in the extended segment of the shoulder 31 311, the internal thread segment 552 by being nested with, while the skin The first side 51 of belt wheel 50 is understood directly by being against the bearing side 41, therefore compared to the prior art must be in the shoulder of screw rod After one nut of upper setting, which could be nested with for the screw rod shoulder, have effects that shorten length, while also because To assemble the reduction of 30 total length of screw rod after the belt pulley 50, the torque of generation also reduces.

It please refers to shown in Fig. 6 to Fig. 8, the utility model second embodiment provides a kind of drive connection knot of ball screw Structure is equally made of screw rod 30, bearing group 40, belt pulley 50 and set screw 60, due to a combination thereof state and effect Be same as first embodiment, so it will not be repeated, as second embodiment difference be in：

The shoulder 31 of the screw rod 30 connects the non-circular shaft part of the external thread section 312 and cross section 313 with more one；It should The transmission connecting structure of ball screw is nested with more positioning piece 70 and at least two set screws 60, the locating piece 70 in the axis Section 313 and the second side 52 for being resisted against the belt pulley 50, respectively the set screw 60 is locking in the locating piece 70 and the belt Between wheel 50；In the present embodiment, for the belt pulley 50 with more at least two by the recessed positioning screw hole 57 of the second side 52, this is fixed There is position part 70 cross section to be in non-circular and be nested in the positioning shaft hole 71 of the shaft part 313 and at least two correspondence respectively positioning The positional punch 72 of screw hole 57, respectively the set screw 60 is locking between the positioning screw hole 57 and the positional punch 72.It uses Reach another embodiment, while making 50 machine-shaping of belt pulley more simple, effectively reduces cost.

It please referring to shown in Fig. 9, the utility model 3rd embodiment provides a kind of transmission connecting structure of ball screw, It is equally made of screw rod 30, bearing group 40, belt pulley 50 and set screw 60, since its configuration and effect are same as first Embodiment, so it will not be repeated, as 3rd embodiment difference be in：

The radial screw hole 58 that the belt pulley 50 runs through the gear part 54 with more one and communicated with the perforation 55, the ball spiral shell The transmission connecting structure of bar has more a set screw 60, and in the present embodiment, which is countersunk head screw, the positioning spiral shell 60 spiral shells of silk are set to the radial direction screw hole 58, and the positioning surface for compressing the external thread section 312 for being stopped at 30 shoulder 31 of screw rod with one 61.Thus reach another embodiment, while making 50 machine-shaping of belt pulley more simple, effectively reduce cost.

It please refers to Fig.1 shown in 0 and Figure 11, the utility model fourth embodiment provides a kind of drive connection of ball screw Structure, again by when rule belt 21 and with 23 be connected by power of motor belt pulley that is located in drive motor 22, the ball spiral shell The transmission connecting structure of bar is made of screw rod 30, bearing group 40, reinforcement external member 80, belt pulley 50 and set screw 60, by It is same as first embodiment in the screw rod 30, the configuration of bearing group 40 and the 50 rough structure of belt pulley, so it will not be repeated, as Fourth embodiment difference be in：

The reinforcement external member 80 is fixed in the shoulder 31 of the screw rod 30, and has a bearing side by being against the bearing group 40 The reinforcement ring portion 82 and one that the reinforcement side 81, one in face 41 is fixed in the extended segment 311 is fixed in the extended segment 311 and has At least clamping claw 83 of two profile grooves 831；The clamping claw 83 of the reinforcement external member 80 has an outer ring surface 832 in the present embodiment, The outer ring surface 832 is by the reinforcement ring portion 82 to the inclined gradually-reducing shape in free end.

The belt pulley 50 is fixed between the shoulder 31 and the reinforcement external member 80, and reversed with a first side 51, one The gear part 54 and one between first and second side 51,52 is located at through this in the second side 52, one of the first side 51 Perforation 55 between first and second side 51,52, the perforation 55 are nested with the taper hole section 553 and one in the clamping claw 83 with one It is screwed on the internal thread segment 552 of the external thread section 312, which is the corresponding outer ring surface for being pressed against the reinforcement external member 80 832.It is identical with the first embodiment as the locking part 56 of the belt pulley 50, so it will not be repeated.

Accordingly, in the utility model fourth embodiment, by the reinforcement external member 80 collocation, the belt pulley 50 is fixed in the spiral shell The shoulder 31 of bar 30 makes the shoulder 31 be coated by the reinforcement external member 80 and the belt pulley 50, uses and increases by 30 shoulder of screw rod 31 structural strength, reduce screw rod 30 31 unbalanced stress of shoulder the problem of, while only pass through the reinforcement external member 80 arrange in pairs or groups the skin 50 groups of belt wheel is set, and is able to promote installation effectiveness and is reduced cost, is more avoided that precision reduces and cause the problem of concentricity deficiency.

In conclusion the various embodiments described above and attached drawing are only the preferred embodiment of the utility model, cannot be limited with this Determine the range of the utility model implementation, every equivalent variations made according to the patent scope of the utility model and modification, all answers Belong in the range of the utility model patent covers.

Claims (10)

1. a kind of transmission connecting structure of ball screw, which is characterized in that include：

There is one screw rod a shoulder, the shoulder to have an extended segment and an external thread section；

One bearing group is fixed in the extended segment of the shoulder, and has a bearing side；

One belt pulley, is fixed in the shoulder, and with one by being against the first side of the bearing side, one being in reverse to first side The second side in face, one are located at reinforcement part between first and second side, one are located between the reinforcement part and the second side Gear part and one run through first and second side perforation, which has one to be nested with straight hole section and a spiral shell in the extended segment Close the internal thread segment in the external thread section.

2. the transmission connecting structure of ball screw as described in claim 1, which is characterized in that the belt pulley is located at more one Locking part between the gear part and the second side, the locking part have one be connected to the gear part first locking segmental arc, And one connection this first locking segmental arc and with the gear parts from second locking segmental arc, this first locking segmental arc have one setting In the first screw thread cambered surface of the external thread section and one first locking face, which has one to face first screw thread Cambered surface and the second lock for supporting or detaching with the first locking face paste with external thread section combination or the second thread segment detached and one Gu the transmission connecting structure in face, the ball screw has more a set screw, which is arranged in the first and second locking arc Between section, to make the first and second locking face paste support or detach and second thread segment made to be combined or be divided with the external thread section From.

3. the transmission connecting structure of ball screw as claimed in claim 2, which is characterized in that the first locking segmental arc has more One by the recessed locking screw channel in the first locking face, which wears the second locking face and correspond to more one is somebody's turn to do The locking screw hole of locking screw channel, which be arranged between the locking screw hole and the locking screw channel.

4. the transmission connecting structure of ball screw as described in claim 1, which is characterized in that the shoulder of the screw rod has more one Connect the non-circular shaft part of the external thread section and cross section；The transmission connecting structure of the ball screw with more positioning piece and At least two set screws, the locating piece are nested in the shaft part and are resisted against the second side of the belt pulley, and respectively the set screw is Locking is between the locating piece and the belt pulley.

5. the transmission connecting structure of ball screw as claimed in claim 4, which is characterized in that the belt pulley has more at least two By the recessed positioning screw hole of the second side, which has a cross section in non-circular and be nested with locating shaft in the shaft part Hole and at least two correspond to each positioning screw hole positional punch, respectively the set screw is locking in the positioning screw hole and the positioning Between perforation.

6. the transmission connecting structure of ball screw as described in claim 1, which is characterized in that the belt pulley runs through with more one The transmission connecting structure of the gear part and the radial screw hole communicated with the perforation, the ball screw has more a set screw, should Set screw spiral shell is set to the radial direction screw hole, and compresses the positioning surface for being stopped at the external thread section with one.

7. a kind of transmission connecting structure of ball screw, which is characterized in that include：

There is one screw rod a shoulder, the shoulder to have an extended segment and an external thread section；

One bearing group is fixed in the extended segment of the shoulder, and has a bearing side；

One reinforcement external member, is fixed in the shoulder, and with one by being against the reinforcement side of the bearing side, one being fixed in the extension The reinforcement ring portion and one of section are fixed in the extended segment and the clamping claw at least two profile grooves；

One belt pulley is fixed between the shoulder and the reinforcement external member, and is in reverse to the first side with a first side, one Second side, one be located at the gear part between first and second side and a perforation between first and second side, should Perforation has one to be nested with the internal thread segment for being screwed on the external thread section in the taper hole section of the clamping claw and one.

8. the transmission connecting structure of ball screw as claimed in claim 7, which is characterized in that the clamping claw of the reinforcement external member Taper hole section with an outer ring surface, the inclined gradually-reducing shape of the outer ring surface, the belt pulley compresses the outer ring surface.

9. the transmission connecting structure of ball screw as claimed in claim 7, which is characterized in that the belt pulley is located at more one Locking part between the gear part and the second side, the locking part have one be connected to the gear part first locking segmental arc, And one connection this first locking segmental arc and with the gear parts from second locking segmental arc, this first locking segmental arc have one setting In the first screw thread cambered surface of the external thread section and one first locking face, which has one to face first screw thread Cambered surface and the second lock for supporting or detaching with the first locking face paste with external thread section combination or the second thread segment detached and one Gu the transmission connecting structure in face, the ball screw has more a set screw, which is arranged in the first and second locking arc Between section, to make the first and second locking face paste support or detach and second thread segment made to be combined or be divided with the external thread section From.

10. the transmission connecting structure of ball screw as claimed in claim 9, which is characterized in that the first locking segmental arc has more Have one by the recessed locking screw channel in the first locking face, which wears the second locking face and correspondence with more one The locking screw hole of the locking screw channel, the set screw are arranged between the locking screw hole and the locking screw channel.