CN209273322U

CN209273322U - The torque controlling device of electric screw driver

Info

Publication number: CN209273322U
Application number: CN201822040824.8U
Authority: CN
Inventors: 王德煌
Original assignee: Individual
Current assignee: Individual
Priority date: 2018-12-06
Filing date: 2018-12-06
Publication date: 2019-08-20
Anticipated expiration: 2028-12-06

Abstract

The utility model provides a kind of torque controlling device of electric screw driver, it is to connect a tool heads, it and include a drive shell, one transmission module, one torsion sleeve and at least a strain gauge, tool heads are connected to the front end of drive shell, transmission module is set in drive shell, and can driving instrument head relative to drive shell rotate, torsion sleeve is set in drive shell, and connect drive shell and transmission module, and can by transmission module drive and generate deformation, strain gauge is set on torsion sleeve, and it can detect and record the deformation of torsion sleeve, the utility model is by being installed with the electric screw driver of strain gauge, the data for keeping electric screw driver in use are completely recorded, control torsion processing numerical value each time can all accurately, and then improve the accuracy and efficiency of process.

Description

The torque controlling device of electric screw driver

Technical field

The utility model relates to a kind of improvement of the structure of hand-held tool, espespecially a kind of torque controlling device of electric screw driver.

Background technique

Electric screw driver is a kind of hand-held tool of the lock members such as assembling-disassembling bolt or screw, passes through the rotation of inner rotation motor Turn, bolt or screw is enable rapidly to dismount in surface to be processed.

And the electric screw driver of the prior art, there is the structure that can adjust its torsion, because electric screw driver needs basis in design The structural strength of material, hardness and the screw of work surface or bolt itself carries out the adjustment of its rotational force, to keep away Exempt from power it is too strong when to work surface and bolt itself structural damage or too weak power when, electric screw driver may nothing Bolt is firmly set to the finished surface by method.

More precisely, please refer to shown in Fig. 9, in the prior art in factory used electric screw driver 90 operating process As follows: after connecting with the mains, when user starts, electric screw driver is after 90s, can trigger its internal control machine plate, and then drive motor A gear-box is driven to rotate, gear-box is also connected with a torsion adjusting device simultaneously, which can set electronic The torsion upper limit of bottle opener；On the other hand, gear-box is further connected with a mechanical brake mechanism, which connects simultaneously It is connected to the axis group of output, which is the tool heads of electric screw driver.

After electric screw driver reaches its torsion upper limit during operation, the mechanical brake mechanism can be triggered, and return Information gives control machine plate, and then motor is made to stop operating, and achievees the purpose that stop entire operating process.

However, the electric screw driver of the prior art has following disadvantage.

First, it please refers to shown in Fig. 9, in the prior art the structure of the torsion adjusting device of electric screw driver 90, is to pass through electricity It is different degrees of between the spring 94 and multiple steel ball (not shown) of the enclosure interior of dynamic bottle opener 90 to compress power to reach, more It speaks by the book, after user sets specified torsion, when electric screw driver 90 is torqued into the torque magnitude, the steel ball of enclosure interior Will tripping, make spring 94 and provide torsion motor mutually separate, formed motor idle running the case where, thus user can learn Torsion has reached the default value.

However, when user will adjust different torsion each time, it is necessary to take electric screw driver 90 from processing place to one Carried out on adjustment device spring 94 tight against or loosen, and its torsion can not be adjusted manually, in time (another reason is to avoid people It is inaccurate in adjustment), therefore it is inconvenient benefit on adjustment torsion.

Second, in order to reduce the frequency for adjusting torsion in process, user usually must be ready for more before processing It is a to reverse to the electric screw driver 90 of different torsion, therefore will cause the burden in cost.

Third, by the torsion for compressing power and being reached of the elements such as spring 94 and steel ball, after using a period of time, Because of long-term friction and it can compress and generate deformation or fatigue of the devices such as steel ball in structure, cause the mistake of its adjustment amount Difference in turn results in user when in use, can not accurately be torqued into its torsion degree to be locked.

4th, in order in response to industry 4.0 concept, the tool of factory of new generation should have can detect at any time, The function of the various data of record and adjustment tool, in other words, in machine component should design, which can detect it, processes shape The sensor of condition, however the electric screw driver 90 of the prior art have no equipped with these can by the structure of process digitization, because This also can not record the data of each process in process.

In conclusion the electric screw driver of the prior art is with the presence of its defect.

Utility model content

In view of the shortcomings that the prior art and deficiency, the utility model provide a kind of torque controlling device of electric screw driver, It is installed with the distortion sensing device that can detect torsion degree by the inside in electric screw driver, and thus user can be by the number of torsion According to electronization, while the torsion by applying needed for computer adjust automatically electric screw driver.

For up to above-mentioned purpose of utility model, technological means used by the utility model is a kind of torsion of electric screw driver Control device, to connect a tool heads, and the torque controlling device of the electric screw driver includes:

One drive shell, opposite end are respectively a front end and a rear end, and the front end of the drive shell is to connect The tool heads；

One transmission module is set in the drive shell, and can be used to that the tool heads is driven to turn with respect to the drive shell It is dynamic；

One torsion sleeve is set in the drive shell, and connects the drive shell and the transmission module, and can be by this The drive of transmission module and generate deformation；

An at least strain gauge is set on the torsion sleeve, and respectively this at least the torsion can be detected and be recorded to a strain gauge The deformation of rotaring sleeve.

The utility model has the advantage of by being installed with strain gauge on torsion sleeve, and detected by strain gauge and turned round The deformation of rotaring sleeve, is thus sensed and is recorded, meanwhile, the torsion power that strain gauge is detected is in transmission numerical value to center After the computer of control, when torsion sleeve reaches the scheduled torsion power upper limit of user, user can be controlled automatically by computer System makes the motor of driving torsion power stop operating, and then reaches as utilized caused by spring and steel ball in the prior art Effect.

But when at the same time, user clearly can also learn that electric screw driver operates each time, exact torsion and its His related data, thus user can be directed to the adjustment of different being customized of machining state, reach more perfect locking function； On the other hand, by the transmitting of data, the torsion of electric screw driver can also be manipulated by computer, therefore user is using When the utility model, it is not necessary to prepare the more different bottle openers of torsion and replace at any time, but can be adjusted by central computer each Thus the torsion that branch electric screw driver can apply when rotating next time achievees the purpose that improve processing efficiency and saves cost.

Finally, due to which the deformation quantity of torsion sleeve is actually very small, therefore spring compared with the prior art And steel ball is in use process each time, and it all can be by very big propelling pressure, the torsion sleeve of the utility model is in object Non- frequent and huge pressure, therefore torque force device compared with the prior art can't be afforded in reason structure, this is practical new Type is very excellent in the durability of actual use.

Furthermore, the torque controlling device of electric screw driver above-mentioned further includes an at least rolling bearing, It is set in the drive shell, and is sheathed on the transmission module, and the medial surface and lateral surface of the rolling bearing are bonded respectively The inner wall of the transmission module and the drive shell.

Furthermore, electric screw driver torque controlling device above-mentioned, wherein the torsion sleeve further includes: before one Interconnecting piece is set to the rear of the transmission module；Interconnecting piece after one is set to the rear of the preceding interconnecting piece；One detecting part, It is set between the preceding interconnecting piece and the rear interconnecting piece, and the thickness of the detecting part is less than the thickness of the preceding interconnecting piece, the sense The thickness in survey portion be less than the rear interconnecting piece thickness, and this at least a strain gauge is set in the outside wall surface of the detecting part.

Furthermore, electric screw driver torque controlling device above-mentioned wherein further includes a sense on the detecting part Wall and multiple long holes are surveyed, the long hole at each interval prolong in the sensing wall, and along the circumferencial direction of the sensing wall by hole formed therethrough It stretches, and respectively an at least strain gauge is set between any two adjacent long holes.

Furthermore, electric screw driver torque controlling device above-mentioned, wherein the torsion sleeve is screwed togather by multiple bolts It is fixed on the inside of the drive shell.

Furthermore, electric screw driver torque controlling device above-mentioned, wherein the transmission module is located at the tool heads and should The centre of torsion sleeve.

Detailed description of the invention

Fig. 1 is the stereo appearance figure of the utility model.

Fig. 2 is the element exploded view of the utility model.

Fig. 3 is the enlargement decomposition of the utility model torsion sleeve Yu signal sensing device.

Fig. 4 is the sectional view of the utility model.

Fig. 5 is the profile of the utility model torsion sleeve.

Fig. 6 is the stereo appearance figure that the utility model is installed on an electric screw driver.

Fig. 7 is the element exploded view of Fig. 6.

Fig. 8 is the sectional view of Fig. 6.

Fig. 9 is the element exploded view of the electric screw driver torque controlling device of the prior art.

Specific embodiment

The preferred embodiment for cooperating attached drawing and the utility model below, it is predetermined to reach that the utility model is further described The technological means that purpose of utility model is taken.

It please refers to shown in Fig. 1, Fig. 6 and Fig. 7, the torque controlling device of the electric screw driver of the utility model is to connect a work Have head 91 and a motor 92, tool heads 91 and motor 92 are respectively arranged at the front end and rear end of the utility model.

Further referring to shown in Fig. 2, Fig. 3 and Fig. 4, the utility model includes a drive shell 10, a transmission module 20, a torsion sleeve 30, at least a strain gauge 40 and an at least rolling bearing 50.

It please refers to shown in Fig. 2, Fig. 4 and Fig. 8, the opposite end of drive shell 10 is respectively a front end and a rear end, and is driven The front end of dynamic shell 10 is connected with the tool heads 91；Transmission module 20 is set in drive shell 10, and can be used to driving instrument First 91 rotate relative to drive shell 10, in addition, the transmission module 20 is a planetary gear set in the present embodiment.

Please refer to shown in Fig. 2, Fig. 3 and Fig. 8, torsion sleeve 30 be set in drive shell 10 and connect drive shell 10 and Transmission module 20；In this example, transmission module 20 above-mentioned is set to the centre of tool heads 91 and torsion sleeve 30, but is driven mould The arrangement position of block 20 and torsion sleeve 30 is not limited；In addition, the torsion sleeve 30 is one columned in the present embodiment Sleeve, but its shape is not also limited with cylinder.

Please refer to shown in Fig. 2, Fig. 3 and Fig. 5, torsion sleeve 30 can by transmission module 20 drive and generate deformation, it is more smart Really to say, the front end of the torsion sleeve 30 and the rim gear wheel (not shown) in transmission module 20 are mutually fixed in the present embodiment, and The rear end of torsion sleeve 30 then screws togather the inside for being fixed on drive shell 10 by multiple bolts 11, and inside transmission module 20 Planetary gear set after being torqued into certain torsion, the sun gear of planetary gear set can drive rim gear wheel one because can not be successfully And rotate, and then rim gear wheel is made to start that the front end of torsion sleeve 30 is driven to reverse together, at this point, due to the rear end of torsion sleeve 30 It is driven the fixation of shell 10, therefore its torsion difference that can generate front and back end.

Please refer to shown in Fig. 3 and Fig. 5, before torsion sleeve 30 further includes one after interconnecting piece 31, one interconnecting piece 32 and One detecting part 33, preceding interconnecting piece 31 are set to the rear of transmission module 20, the rear of interconnecting piece 31 before rear interconnecting piece 32 is set to, And detecting part 33 is then set between preceding interconnecting piece 31 and rear interconnecting piece 32, and front and back is connected to two structure.

It please refers to shown in Fig. 5, more precisely, in the present embodiment, torsion sleeve 30 is the cylindrical sleeves of both ends perforation, And the thickness of detecting part 33 is less than the thickness of preceding interconnecting piece 31, and the thickness of detecting part 33 is again smaller than the thickness of rear interconnecting piece 32, And on detecting part 33, a sensing wall 331 and multiple long holes 332 are further includeed, previously with regard to the thickness of detecting part 33 Refer to the thickness of sensing wall 331, and hole formed therethrough is on sensing wall 331 at each interval for the long hole 332, and along the sensing The circumferencial direction of wall 331 extends.

Please refer to shown in Fig. 3, respectively this at least a strain gauge 40 is set on torsion sleeve 30, and can be used to detect and record The deformation of torsion sleeve 30, in the present embodiment, the quantity of an at least strain gauge 40 is multiple, but it is not limited, and institute It states strain gauge 40 to be set in the outside wall surface of detecting part 33, more precisely, respectively it is adjacent to be set to any two for the strain gauge 40 Between long hole 332, make long hole 332 and strain gauge 40 it is interlaced with each other be located at the sensing wall 331 on.

On the other hand, when the utility model is used, strain gauge 40 can be electrically connected to a signal sensing device 93, and pass through The numerical value that strain gauge 40 is recorded is transferred to external computer by the signal sensing device 93, in the present embodiment, the signal Sensing device 93 is set in torsion sleeve 30, but it is arranged position and is not limited.

It please referring to shown in Fig. 4 and Fig. 8, at least a rolling bearing 50 is set in drive shell 10 for this, and in the present embodiment, The quantity of an at least rolling bearing 50 is two, and two rolling bearing 50 is arranged along front and back respectively, is sheathed on transmission module On 20, and respectively the medial surface of the rolling bearing 50 and lateral surface fit in the inner wall of transmission module 20 and drive shell 10 respectively Face.

The following are the use state of the utility model and its advantages.

It please refers to shown in Fig. 2, Fig. 3 and Fig. 7, when the utility model is used, can be connected to by signal sensing device 93 External computer (not shown), and the upper limit that 92 torsion of motor transmits, this signal sensing are preset by computer Device can transmit the data such as brake, manufacturing procedure and counting simultaneously.

In practical operation, when user's starting electric screw driver, motor is made to start running and pass through a bolt or screw The rotation of tool heads 91 and after gradually locking object to be processed, the torsion that tool heads 91 are afforded can gradually be transferred to torsion It on sleeve 30, and reverses the beginning of torsion sleeve 30 slightly, after this torsional distortion generates, can be recorded by strain gauge 40, And external computer is returned to by signal sensing device 93, preceding preset number is used when the amount that strain gauge 40 is recorded reaches When value, computer will shut down motor 92, and then stop electric screw driver, complete the behavior entirely reversed.

And the advantages of the utility model, is as follows:

First, it please refers to shown in Fig. 3, can detect and record the strain gauge 40 of deformation quantity by being installed with, this is practical new Type is able to record the data in process each time, thus judge and unite it is whole process each time caused by result, error etc. Situation, the remittance by this data is whole, and the utility model every facility in factory that can further arrange in pairs or groups reaches the mesh of industry 4.0 's.

Second, by the feedback of torsion numerical value, torsion that user can be transmitted by the single electric screw driver of computer operating Force value, in other words, user can be adjusted for the torsion upper limit of the every electric screw driver in processing flow each time, reached To the purpose for cooperating different processing objects more appositely, meanwhile, it need not also be used not again using the operator of electric screw driver With torsion electric screw driver and prepare more electric screw drivers, and make to directly adjust each rapidly by computer operating The torsion upper limit of branch electric screw driver instantly.

Third, it is shown that please refer to figs. 2 and 3, uses torsion sleeve 30 that can reduce electronic as the device of detecting torsion The equipment coefficient of losses of bottle opener in use, therefore the service life of single electric screw driver can be improved.

In conclusion the torque controlling device of the electric screw driver of the utility model, which has, can effectively improve making for electric screw driver With accuracy, service life and use when processing efficiency the advantages that.

The above is only the preferred embodiment of the utility model, not does in any form to the utility model Limitation, although the utility model has been disclosed with preferred embodiment as above, is not intended to limit the utility model, any affiliated Has usually intellectual in technical field, in the range of not departing from technical solutions of the utility model, when using the disclosure above Technology contents be modified or modify the equivalent embodiment as equivalent variations, but it is all without departing from the utility model skill The content of art scheme, according to the technical essence of the utility model any simple modification made to the above embodiment, equivalent variations With modification, it is still within the scope of the technical solutions of the present invention.

Claims

1. a kind of torque controlling device of electric screw driver, connecting a tool heads, characterized by comprising:

One drive shell, opposite end are respectively a front end and a rear end, and the front end of the drive shell is to connect the work Has head；

One transmission module is set in the drive shell, and can be to drive the tool heads to rotate relative to the drive shell；

One torsion sleeve is set in the drive shell, and connects the drive shell and the transmission module, and can be by the biography The drive of dynamic model block and generate deformation；

An at least strain gauge is set on the torsion sleeve, and respectively this at least the torsion can be detected and be recorded to a strain gauge The deformation of sleeve.

2. the torque controlling device of electric screw driver according to claim 1, which is characterized in that further include at least one Rolling bearing is set in the drive shell, and is sheathed on the transmission module, the medial surface and lateral surface of the rolling bearing It is bonded the transmission module and the inner wall of the drive shell respectively.

3. the torque controlling device of electric screw driver according to claim 1 or 2, which is characterized in that the torsion sleeve is into one Step includes:

Interconnecting piece before one is set to the rear of the transmission module；

Interconnecting piece after one is set to the rear of the preceding interconnecting piece；

One detecting part is set between the preceding interconnecting piece and the rear interconnecting piece, and the thickness of the detecting part is less than the preceding connection The thickness in portion, the thickness of the detecting part are less than the thickness of the rear interconnecting piece, and this at least a strain gauge is set to the detecting part In outside wall surface.

4. the torque controlling device of electric screw driver according to claim 3, which is characterized in that further wrapped on the detecting part Containing a sensing wall and multiple long holes, hole formed therethrough is in the sensing wall at each interval for the long hole, and along the circle of the sensing wall Circumferential direction extends, and respectively an at least strain gauge is set between any two adjacent long holes.

5. the torque controlling device of electric screw driver according to claim 1 or 2, which is characterized in that the torsion sleeve passes through Multiple bolts screw togather the inside for being fixed on the drive shell.

6. the torque controlling device of electric screw driver according to claim 1 or 2, which is characterized in that the transmission module is located at The centre of the tool heads and the torsion sleeve.