CN214351038U

CN214351038U - Motor-driven clamp

Info

Publication number: CN214351038U
Application number: CN202120532269.XU
Authority: CN
Inventors: 杨其建
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-10-08
Anticipated expiration: 2031-03-15

Abstract

The embodiment of the utility model provides a motor drive's anchor clamps belongs to clamping device technical field, include: a motor; an actuating mechanism, the actuating mechanism comprising: a screw rod; the screw rod sleeve is sleeved on the screw rod in a threaded connection manner; a pushing assembly, the pushing assembly comprising: a first moving part; the second moving part is movably connected with the first moving part; in addition, an elastic space is arranged between the second moving part and the first moving part; the clamping jaw is respectively connected with the first moving part and the second moving part; the screw rod sleeve acts on the pushing assembly, the clamping jaw forms a clamping state through the change of the relative position between the first moving part and the second moving part, and the advance of the screw rod sleeve is limited through the screw rod bearing, so that the screw rod sleeve is changed from linear motion to turnover motion, and the screw rod sleeve can indirectly drive the clamping jaw to turn over; the technical effect of executing the whole set of operation actions by using a single motor is achieved.

Description

Motor-driven clamp

Technical Field

The utility model relates to a clamping device technical field especially relates to a motor drive's anchor clamps.

Background

At present, when the double-side chamfering operation is carried out on workpieces such as a bearing ring and the like, the operation of turning over the bearing ring is needed.

The traditional non-standard automatic design scheme is that the execution process of the whole set of actions is split into a plurality of independent actions, and when the whole set of actions is applied to the bearing ring, the actions can be specifically split into a forward extending action, a clamping action, a turnover action, a releasing action and a retraction action. Based on the split research of the movement, the general non-standard automation can utilize a telescopic cylinder, an air claw and a rotary cylinder to combine and complete the movement.

Therefore, the technical problems of the prior art are as follows: clamps designed using pneumatic principles require coordination of intervention time and working time of multiple components.

Disclosure of Invention

The embodiment of the application provides a motor-driven clamp, which solves the technical problem that the clamp designed by utilizing the pneumatic principle in the prior art needs to coordinate the intervention time and the working time of a plurality of components; the technical effect of executing the whole set of operation actions by using a single motor is achieved.

The embodiment of the application provides a motor drive's anchor clamps, anchor clamps include: a motor; an action mechanism, the action mechanism comprising:

the rear end of the screw rod is connected to the motor; the front end of the screw rod penetrates through a screw rod bearing; the screw rod sleeve is sleeved on the screw rod in a threaded connection manner; a push assembly located in front of the screw sleeve, the push assembly contacting the screw bearing and defining a position of the screw bearing; the push assembly includes: a first moving part; the second motion part is arranged inside and outside or at intervals on the circumference between the first motion part and the second motion part, and the second motion part is movably connected with the first motion part; in addition, an elastic space is arranged between the second moving part and the first moving part, and the elastic space is adjustable relative to the axial direction of the screw rod; the second spring is positioned in the elastic space, and two ends of the second spring are respectively contacted with the first moving part and the second moving part; the relative position between the first moving part and the second moving part is enabled to have a stable state and an adjustable state through the second spring; the clamping jaw is connected to the front end of the pushing assembly and is respectively connected with the first moving part and the second moving part; the screw rod sleeve acts on the pushing assembly, and the clamping jaw is enabled to form a clamping state through the change of the relative position between the first moving part and the second moving part.

Preferably, the clamping jaw is hingedly connected to one of the first and second moving parts; and the clamping jaw is contacted with the other one of the first moving part and the second moving part, and the clamping jaw is enabled to achieve a clamping state in a rotating mode by pushing the clamping jaw.

Preferably, the clamping jaw is provided with a first pin slot and a second pin slot; the front end of the first moving part is connected with a first clamping jaw pin shaft, and the first clamping jaw pin shaft penetrates through the first pin groove; the front end of the second moving part is connected with a second clamping jaw pin shaft which is arranged on a second pin groove in a penetrating manner; at least one of the first pin groove and the second pin groove is obliquely arranged relative to the axial direction of the screw rod, and the linear motion of the pushing assembly drives the clamping jaw to rotate through the obliquely arranged first pin groove or the second pin groove.

Preferably, the screw rod sleeve is fixedly connected with the pushing assembly; the screw rod sleeve has a first state and a second state relative to the screw rod, and in the first state, an interval is formed between the screw rod sleeve and the screw rod bearing, and the screw rod sleeve drives the pushing assembly to do linear motion relative to the screw rod; in the second state, the screw rod sleeve is abutted against the screw rod bearing, and the screw rod sleeve drives the pushing assembly to rotate relative to the screw rod.

Preferably, a linkage assembly is connected between the screw rod sleeve and the pushing assembly, and the linkage assembly has elastic expansion capability relative to the axial direction of the screw rod, or the linkage assembly has elastic expansion capability relative to the axial direction of the screw rod in a connection mode relative to the screw rod sleeve or the pushing assembly; and the screw rod sleeve is switched from the second state to the first state based on the elastic telescopic capacity.

Preferably, a coupling is arranged between the motor and the screw rod.

Preferably, the second moving portion is located outside the first moving portion, and the jig further includes: and the shell is arranged on the outer side of the action mechanism in a coating manner, a shell bearing is arranged between the shell and the second movement part, and the action mechanism can be contracted and rotated relative to the shell through the shell bearing.

Preferably, the housing is fixedly connected to the motor directly or indirectly.

Preferably, a linear guide groove is arranged on the inner wall of the shell; the actuating mechanism is provided with a ball and a ball spring, wherein part of the ball is located in the guide groove, and the ball spring acts on the ball, and the angular position of the actuating mechanism relative to the housing is defined by the ball.

Preferably, the operating mechanism further includes: spacing subassembly, spacing subassembly includes: the ring body is sleeved on the second moving part and is provided with a sliding groove relative to the shell; one part of the limiting pin shaft is positioned in the sliding groove, and the other part of the limiting pin shaft is arranged on the shell in a penetrating manner; the rotation amplitude of the second moving part relative to the shell is limited through the limit pin shaft. Preferably, a third spring is further arranged in the sliding groove, the third spring acts on the limiting pin shaft, and the ring body has elastic resetting capacity relative to the shell through the third spring.

One or more technical solutions in the embodiments of the present application have at least one or more of the following technical effects:

1. in the embodiment of the application, a motor is matched with the screw rod and the screw rod sleeve to perform linear motion, and then the power of the linear motion is utilized to convert the linear motion into the rotary motion of the clamping jaw and the rotary motion of the pushing assembly in stages so as to achieve the purposes of clamping the bearing ring and turning over the bearing ring; the technical problem that in the prior art, a clamp designed by utilizing a pneumatic principle needs to coordinate the intervention time and the working time of a plurality of components is solved; the technical effect of executing the whole set of operation actions by using a single motor is achieved.

2. In the embodiment of the application, the clamping jaw is provided with the first pin groove and the second pin groove, and the second pin groove is used as a limiting ring of the clamping jaw anchor point to prevent the clamping jaw from moving integrally; and the first pin slot is obliquely arranged and is used for matching with the linear motion of the first motion part relative to the second motion part to drive the clamping jaw to rotate.

3. In the embodiment of the application, the first moving part and the second moving part are arranged in an inner and outer sleeving manner, so that all parts of the pushing assembly are tightly connected, the integral compactness is high, the internal parts are prevented from shaking, and the action of the motor-driven clamping jaw is ensured to be clean and well-off; and secondly, the first moving part and the second moving part are utilized to support the space between the shell and the lead screw bearing, so that the front end of the shell and the front end of the lead screw are both strongly supported.

4. In the embodiment of the application, under the premise of protecting the action mechanism from being contacted with the outside by arranging the shell, the ball on the action mechanism is matched with the guide groove to limit the motion track of the action mechanism, for example, the groove capable of accommodating the ball and the ball spring is arranged on the outer side surface of the screw rod sleeve, so that the screw rod sleeve can stably move linearly relative to the screw rod in the motion process.

5. In the embodiment of the application, the action mechanism can be ensured to be turned over by 180 degrees in the turning process by arranging the limiting assembly outside the second motion part. Furthermore, the first positioning shaft on the second moving part is arranged at an interval relative to the second positioning shaft on the ring body, and the tracks of the first positioning shaft and the second positioning shaft are interfered after a certain angle, so that the moving range of the second moving part relative to the shell is kept at 180 degrees after the length of the sliding groove on the ring body is reduced; also be favorable to more accurate injecing the rotation angle of second motion portion for the shell, guarantee this device the precision when carrying out the turn-over operation to the bearing ring, guarantee that the automatic double-sided chamfer effect of bearing ring meets the standard requirement.

Drawings

FIG. 1 is a schematic axial view of a motor-driven clamp according to an embodiment of the present disclosure;

FIG. 2 is a schematic top view of a motor-driven clamp according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 4 is a schematic cross-sectional view of the actuator shown in FIG. 3, with the actuator extended a distance;

FIG. 5 is a schematic axial cross-sectional view of an embodiment of the present application between the actuation mechanism and the jaws;

FIG. 6 is a schematic top view of an embodiment of the present application between the actuation mechanism and the jaws;

FIG. 7 is a schematic cross-sectional view of the actuator mechanism shown in FIG. 4 with the jaws clamped in position and extended further;

FIG. 8 is a schematic axial cross-sectional view of a linkage assembly and a first moving part of an embodiment of the present application;

FIG. 9 is a schematic cross-sectional view of the screw sleeve moving forward to contact with the screw bearing to rotate the first moving portion in the state of FIG. 7;

FIG. 10 is a schematic axial half-section view between a second motion portion and a limiting assembly in an embodiment of the present application;

FIG. 11 is an enlarged view at B of FIG. 10;

FIG. 12 is a schematic axial view of a second motion segment and a spacing assembly in an embodiment of the present application;

FIG. 13 is a sectional view of the second moving part and the limiting assembly in the embodiment of the present application;

FIG. 14 is a schematic front view of a motor-driven clamp according to an embodiment of the present disclosure;

FIG. 15 is a cross-sectional view taken along line C-C of FIG. 14;

fig. 16 is an enlarged view at D in fig. 15.

Reference numerals: 1. a motor; 2. a coupling; 3. an actuating mechanism; 31. a screw rod; 311. a screw bearing; 32. a screw rod sleeve; 33. a linkage assembly; 331. a middle block; 332. a connecting shaft; 333. a first spring; 334. a ball spring; 335. a ball bearing; 34. a first moving part; 341. a first jaw pin; 35. a second spring; 36. a second motion part; 361. a second jaw pin; 362. a first positioning shaft; 37. a limiting component; 371. a ring body; 3711. a chute; 3712. an accommodating cavity; 372. a limiting pin shaft; 373. a third spring; 374. a second positioning shaft; 4. a clamping jaw; 41. a first pin slot; 42. a second pin slot; 5. a housing; 51. a housing; 511. a guide groove; 52. and a housing bearing.

Detailed Description

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings). In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present application and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be considered as limiting the present application.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The embodiment of the application provides a motor-driven clamp, a motor 1 is matched with a screw rod 31 and a screw rod sleeve 32 to perform linear motion, and then power of the linear motion is utilized to convert the power into rotary motion of a clamping jaw 4 and rotary motion of a pushing assembly in stages so as to achieve the purposes of clamping a bearing ring and turning over the bearing ring; the technical problem that in the prior art, a clamp designed by utilizing a pneumatic principle needs to coordinate the intervention time and the working time of a plurality of components is solved; the technical effect of executing the whole set of operation actions by using the single motor 1 is achieved.

In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

A motor driven clamp substantially as herein described with reference to figure 1 of the accompanying drawings, the clamp comprising: motor 1, shaft coupling 2, actuating mechanism 3, clamping jaw 4 and shell 5. Wherein, the motor 1 drives the action mechanism 3 to rotate in a mode of driving the coupling 2; action mechanism 3 is based on and the spacing cooperation between 5 shells for carry out the centre gripping action and the upset action after making 4 straight lines of clamping jaw stretch out a distance, make all actions of this device all be based on a motor 1, the motion between each part can not be mutual interference on the time line, and this device is whole compact and accurate, in order to satisfy anchor clamps to the execution action demand like the two-sided chamfer of bearing ring. Of course, the device can be applied to the processing of other workpieces or parts on the double-sided chamfer of the bearing ring, and can also be used for clamping operation.

A motor 1; for providing the driving force for the device. It is understood that the motor 1 can adopt a servo motor 1 or a stepping motor 1, so that the running speed and the movement angle of the device are accurate. Further can also install angle detector at motor 1's rear portion to whether the turned angle that comes forward feedback motor 1 through angle detector's mode is accurate, so that motor 1 can be quick adjust the operation, is 180 in order to guarantee that the upset angle that is holding the bearing ring, and the terminal surface that is the bearing ring before the assurance upset corresponds the car processing equipment.

The action mechanism 3 is used for converting the rotary motion input by the motor 1 into the linear motion, the clamping motion and the overturning motion of the clamping jaw 4 in stages by referring to the attached figures 3-16 of the specification. The action mechanism 3 includes: the screw rod 31, the screw rod sleeve 32, the linkage assembly 33, the pushing assembly and the limiting assembly 37. Wherein, the screw rod sleeve 32 is arranged on the screw rod 31, and the rotary motion input by the motor 1 is changed into linear motion based on the screw rod 31 and the screw rod sleeve 32; after the screw rod sleeve 32 moves linearly for a certain distance, based on an elastic space between the first moving part 34 and the second moving part 36 in the pushing assembly and an interference limit between one of the moving parts and the shell 5, the linear pushing action of the screw rod sleeve 32 on the pushing assembly is converted into a pushing and rotating action of the pushing assembly on the clamping jaw 4, so that the clamping jaw 4 can perform clamping movement after the action mechanism 3 extends outwards for a certain distance relative to the shell 5; and when the screw rod sleeve 32 continues to move linearly forwards, the front end of the screw rod sleeve 32 is abutted against the screw rod bearing 311 to limit the straight line of the screw rod sleeve 32, at the moment, the screw rod sleeve 32 does not move linearly any more but does rotational motion along with the screw rod bearing 311, and drives the pushing assembly and the clamping jaw 4 to rotate relative to the shell 5, and the rotational angle is based on the rotational angle of the motor 1 in the period.

The rear end of the screw rod 31 is connected to the motor 1, and a coupler 2 is preferably arranged between the motor 1 and the screw rod 31; and the front end of the screw 31 is inserted into a screw bearing 311.

The screw sleeve 32, referred to in the description of fig. 3, is adapted to move linearly along the screw 31 or rotate with the screw 31. The screw rod sleeve 32 is sleeved on the screw rod 31 in a threaded connection manner. The screw rod sleeve 32 is fixedly connected with the pushing assembly; the screw rod sleeve 32 has a first state and a second state relative to the screw rod 31, in the first state, a gap is formed between the screw rod sleeve 32 and the screw rod bearing 311, and the screw rod sleeve 32 drives the pushing assembly to do linear motion relative to the screw rod 31; in the second state, the screw sleeve 32 is abutted against the screw bearing 311, and the screw sleeve 32 drives the pushing assembly to rotate relative to the screw 31.

The pushing assembly, referred to in the description of fig. 3-4, is adapted to receive the action of the screw sleeve 32 to actuate the jaws 4. The pushing component is positioned in front of the screw rod sleeve 32, contacts the screw rod bearing 311 and limits the position of the screw rod bearing 311; the pushing assembly comprises: a first moving part 34, a second moving part 36, and a second spring 35; the relative position relationship between the first moving part 34 and the second moving part 36 is various, and may be arranged inside and outside, or arranged on two sides or circumferentially relative to the screw rod 31, and the arrangement form may be a sleeving, embedding or clamping arrangement. The second moving part 36 is movably connected with the first moving part 34; in addition, an elastic space is formed between the second moving part 36 and the first moving part 34, the second spring 35 is located in the elastic space, and two ends of the second spring 35 respectively contact the first moving part 34 and the second moving part 36; the relative position between the first moving part 34 and the second moving part 36 is made to have both stable and adjustable states by the second spring 35. Wherein the screw sleeve 32 acts on the pushing assembly, the clamping jaw 4 is brought into a clamping state by changing the relative position between the first moving part 34 and the second moving part 36.

In one embodiment, the first moving portion 34 is hollow, the first moving portion 34 is sleeved outside the screw rod 31, an inner wall of the first moving portion 34 is in contact with the screw rod bearing 311, and the shaking amplitude of the screw rod 31 is limited through the first moving portion 34; the second moving portion 36 is hollow, and the second moving portion 36 is sleeved outside the first moving portion 34.

The linkage assembly 33, as referred to in the specification with reference to fig. 7-8, is used to ensure that the screw sleeve 32 can abut against the screw bearing 311 when the device contacts workpieces of different dimensions. The linkage assembly 33 arranged between the screw rod sleeve 32 and the pushing assembly has elastic expansion and contraction capacity relative to the axial direction of the screw rod 31, or the linkage assembly 33 has elastic expansion and contraction capacity relative to the axial direction of the screw rod 31 relative to the connection mode of the screw rod sleeve 32 or the pushing assembly; and the switch of the screw boss 32 from the second state to the first state is made based on the elastic contractibility. It should be noted that, when the device clamps a large-sized bearing ring, the elastic space of the pushing assembly has a small contraction amplitude, which is not enough to make the screw rod sleeve 32 collide with the screw rod bearing 311; the elastic expansion and contraction capacity of the linkage assembly 33 is utilized to compensate the problem of insufficient elastic space contraction of the pushing assembly.

The clamping jaw 4, referred to in the description in figures 4-6, is intended to receive a linear thrust and perform a clamping action. The clamping jaw 4 is connected to the front end of the pushing assembly, and the clamping jaw 4 is respectively connected with the first moving part 34 and the second moving part 36. The clamping action of the clamping jaw 4 is based on a positioning point and a pushing force biased from the positioning point, and the clamping jaw 4 is hinged with one of the first moving part 34 and the second moving part 36; and the holding jaw 4 comes into contact with the other of the first moving portion 34 and the second moving portion 36, and the holding jaw 4 is brought into the holding state in a rotated manner by pushing the holding jaw 4.

In one embodiment, referring to fig. 5-6 of the specification, the jaw 4 is provided with a first pin slot 41 and a second pin slot 42; the front end of the first moving part 34 is connected with a first clamping jaw 4 pin shaft, and the first clamping jaw 4 pin shaft is arranged on the first pin groove 41 in a penetrating manner; the front end of the second moving part 36 is connected with a second clamping jaw 4 pin shaft, and the second clamping jaw 4 pin shaft penetrates through the second pin groove 42; at least one of the first pin slot 41 and the second pin slot 42 is obliquely arranged relative to the axial direction of the screw rod 31, and the linear motion of the pushing assembly drives the clamping jaw 4 to rotate through the obliquely arranged first pin slot 41 or the second pin slot 42.

The shell 5, the shell 5 and the coupling 2 or the motor 1 are fixedly connected, the shell 5 is arranged outside the actuating mechanism 3 in a wrapping mode, a shell bearing 52 is arranged between the shell 5 and the second moving portion 36, the actuating mechanism 3 can be stretched and rotated relative to the shell 5 through the shell bearing 52, and the maximum extent of forward extension of the second moving portion 36 is limited by the shell bearing 52, so that after the pushing assembly extends forwards for a certain distance, the pushing assembly is enabled to be changed from linear motion to rotary motion.

It should be noted that, referring to fig. 14-16 of the specification, a linear guide slot 511 is provided on the inner wall of the housing 5; the actuator 3 is provided with a ball 335 and a ball spring 334, wherein a portion of the ball 335 is located in the guide groove 511 and the ball spring 334 acts on the ball 335, the angular position of the actuator 3 relative to the housing 5 being defined by the ball 335.

The limiting assembly 37, referred to in the description of fig. 9-13, is used for limiting the rotation angle of the actuating mechanism 3 relative to the housing 5, so as to ensure that the rotation angle is suitable for chamfering the bearing ring after the bearing ring is turned over. The spacing assembly 37 includes: a ring body 371 and a limit pin 372; the ring body 371 is restrictively fixed on the housing 5 through the limiting pin shaft 372, so that the rotation amplitude of the ring body 371 relative to the housing 5 is limited, and the rotation amplitude of the second moving part 36 is limited based on the ring body 371, thereby ensuring that the rotation amplitude of the pushing assembly is limited after a preset range, and avoiding the position deviation of a workpiece when the other end face is chamfered due to excessive overturning.

The ring body 371 is sleeved on the second moving part 36, and the ring body 371 is provided with a sliding groove 3711 relative to the shell 5; the ring body 371 is provided with a plurality of chutes 3711; one part of the limiting pin shaft 372 is positioned in the chute 3711, and the other part of the limiting pin shaft 372 is arranged on the shell 5 in a penetrating way; the rotation amplitude of the second moving part 36 relative to the housing 5 is limited by the limit pin 372.

It is understood that the sliding slots 3711 may be provided in plural, and preferably, plural sliding slots 3711 are provided at intervals therebetween, so as to buffer the rotation of the actuating mechanism 3 from plural directions, or to restrict the rotation of the actuating mechanism 3 from plural directions; further, a third spring 373 is disposed in the sliding slot 3711, the third spring 373 acts on the limit pin 372, and the ring body 371 has an elastic resetting capability with respect to the housing 5 through the third spring 373.

In order to reduce the length of the accommodating cavity 3712 on the ring body 371, refer to fig. 13 in the specification, and avoid the problem of inaccurate positioning caused by long span when the span of the accommodating cavity 3712 is set to be 180 degrees relative to the ring body 371. The ring body 371 and part of the inner wall of the ring body 371 and the second moving part 36 are arranged at intervals to form an accommodating cavity 3712; the second moving part 36 is connected with a first positioning shaft 362, a part of which is located in the accommodating cavity 3712, and the ring body 371 is connected with a second positioning shaft 374, a part of which is located in the accommodating cavity 3712; the rotation track of the second positioning shaft 374 interferes with the movement track of the second positioning shaft 374, and the rotation range of the second moving part 36 relative to the housing 5 is limited by the first positioning shaft 362, the second positioning shaft 374 and the limit pin 372.

The working principle is as follows:

referring to the attached drawings 3-4 of the specification, the motor 1 drives the screw rod 31 to rotate through the coupler 2, after the screw rod 31 rotates, the screw rod sleeve 32 is limited by the ball 335 on the track, the screw rod sleeve moves forwards linearly, and pushes the whole pushing assembly and the clamping jaw 4 to move forwards in an interference mode, so that the clamping jaw 4 stretches forwards.

Reference is made to figures 6 to 7 of the specification; after the clamping jaw 4 extends forward for a certain distance, the second moving part 36 is abutted against the shell bearing 52 of the housing 5, at this time, the second moving part 36 cannot advance, and the screw rod sleeve 32 still moving forward linearly pushes the first moving part 34 to move linearly relative to the second moving part 36, so that the pin shaft of the first clamping jaw 4 connected with the first moving part 34 drives the clamping jaw 4 to rotate around the pin shaft of the second clamping jaw 4, and the clamping action of the clamping jaw 4 is realized.

Referring to the attached fig. 9 of the specification, after the clamping jaw 4 performs the clamping action, the screw rod sleeve 32 continues to move until the screw rod sleeve 32 abuts against the screw rod bearing 311, and because the screw rod sleeve 32 cannot continue to advance, at this time, the screw rod sleeve 32 performs the turning motion along with the screw rod 31, so as to achieve the purpose of driving the clamping jaw 4 to turn based on the one-to-one corresponding connection relationship among the screw rod sleeve 32, the first moving portion 34, the clamping jaw 4 and the second moving portion 36. And the clamping jaw can pause between clamping action and overturning action so as to process the workpiece.

After the clamping jaw 4 is overturned, the motor 1 rotates reversely, and based on the acting force of the first spring 333 and the second spring 35 on the screw rod sleeve 32, the screw rod sleeve 32 and the screw rod bearing 311 are separated and do reverse linear motion, so that reverse overturning of the clamping jaw 4, releasing of the clamping jaw 4 and retraction of the clamping jaw 4 are sequentially realized.

The technical effects are as follows:

While the preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the appended claims be interpreted as including the preferred embodiment and all such alterations and modifications as fall within the scope of the invention.

It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. A motor-driven clamp, said clamp comprising:

a motor;

an action mechanism, the action mechanism comprising:

the rear end of the screw rod is connected to the motor; the front end of the screw rod penetrates through a screw rod bearing;

the screw rod sleeve is sleeved on the screw rod in a threaded connection manner;

a push assembly located in front of the screw sleeve, the push assembly contacting the screw bearing and defining a position of the screw bearing; the push assembly includes:

a first moving part;

the second motion part is arranged inside and outside or at intervals on the circumference between the first motion part and the second motion part, and the second motion part is movably connected with the first motion part; in addition, an elastic space is arranged between the second moving part and the first moving part, and the elastic space is adjustable relative to the axial direction of the screw rod;

the second spring is positioned in the elastic space, and two ends of the second spring are respectively contacted with the first moving part and the second moving part; the relative position between the first moving part and the second moving part is enabled to have a stable state and an adjustable state through the second spring;

the clamping jaw is connected to the front end of the pushing assembly and is respectively connected with the first moving part and the second moving part;

the screw rod sleeve acts on the pushing assembly, and the clamping jaw is enabled to form a clamping state through the change of the relative position between the first moving part and the second moving part.

2. The clamp of claim 1, wherein said clamping jaw is hingedly connected to one of said first and second moving portions; and the clamping jaw is contacted with the other one of the first moving part and the second moving part, and the clamping jaw is enabled to achieve a clamping state in a rotating mode by pushing the clamping jaw.

3. The clamp of claim 2, wherein said jaw is provided with a first pin slot and a second pin slot; the front end of the first moving part is connected with a first clamping jaw pin shaft, and the first clamping jaw pin shaft penetrates through the first pin groove; the front end of the second moving part is connected with a second clamping jaw pin shaft which is arranged on a second pin groove in a penetrating manner; at least one of the first pin groove and the second pin groove is obliquely arranged relative to the axial direction of the screw rod, and the linear motion of the pushing assembly drives the clamping jaw to rotate through the obliquely arranged first pin groove or the second pin groove.

4. The clamp of claim 1, wherein the screw housing and the pushing assembly are fixedly connected; the screw rod sleeve has a first state and a second state relative to the screw rod, and in the first state, an interval is formed between the screw rod sleeve and the screw rod bearing, and the screw rod sleeve drives the pushing assembly to do linear motion relative to the screw rod; in the second state, the screw rod sleeve is abutted against the screw rod bearing, and the screw rod sleeve drives the pushing assembly to rotate relative to the screw rod.

5. The clamp of claim 4, wherein a linkage assembly is connected between the screw rod sleeve and the pushing assembly, and the linkage assembly has elastic expansion and contraction capability relative to the axial direction of the screw rod, or the linkage assembly has elastic expansion and contraction capability relative to the axial direction of the screw rod relative to the connection manner of the screw rod sleeve or the pushing assembly; and the screw rod sleeve is switched from the second state to the first state based on the elastic telescopic capacity.

6. The clamp of claim 1, wherein a coupling is disposed between the motor and the lead screw.

7. The clamp of claim 1, wherein the second motion portion is located outside the first motion portion, and the clamp further comprises:

and the shell is arranged on the outer side of the action mechanism in a coating manner, a shell bearing is arranged between the shell and the second movement part, and the action mechanism can be contracted and rotated relative to the shell through the shell bearing.

8. A clamp as claimed in claim 7, wherein the housing is fixedly connected to the motor directly or indirectly.

9. The clamp of claim 7, wherein the inner wall of said housing is provided with a linear guide channel; the actuating mechanism is provided with a ball and a ball spring, wherein part of the ball is located in the guide groove, and the ball spring acts on the ball, and the angular position of the actuating mechanism relative to the housing is defined by the ball.

10. The clamp of claim 7, wherein the actuation mechanism further comprises:

spacing subassembly, spacing subassembly includes:

the ring body is sleeved on the second moving part and is provided with a sliding groove relative to the shell;

one part of the limiting pin shaft is positioned in the sliding groove, and the other part of the limiting pin shaft is arranged on the shell in a penetrating manner; the rotation amplitude of the second moving part relative to the shell is limited through the limit pin shaft.