CN113927477B - Grinding machine head frame with tensioning structure - Google Patents
Grinding machine head frame with tensioning structure Download PDFInfo
- Publication number
- CN113927477B CN113927477B CN202111373312.3A CN202111373312A CN113927477B CN 113927477 B CN113927477 B CN 113927477B CN 202111373312 A CN202111373312 A CN 202111373312A CN 113927477 B CN113927477 B CN 113927477B
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- Prior art keywords
- tensioning
- base
- hole
- output shaft
- shaft
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/04—Headstocks; Working-spindles; Features relating thereto
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
Abstract
The invention provides a grinding machine head frame with a tensioning structure, which comprises: base, main shaft, driving motor and tensioning texture. The main shaft is rotatably arranged on the base, and the driving motor is arranged on the base through the buffer pad; the driving motor comprises an output shaft and a belt wheel, the belt wheel is arranged on the output shaft, the belt wheel is in driving connection with the main shaft through a driving belt, a containing groove and an avoiding through hole are formed in the base, the belt wheel and the driving belt are contained in the containing groove, an output shaft through hole matched with the avoiding through hole is formed in the buffer pad, and the output shaft penetrates through the output shaft through hole and the avoiding through hole; the tensioning structure is mounted on the base and drivingly connected to the cushion. The grinding machine head frame with the tensioning structure can enable the installation of the conveying belt to be more convenient, and enable an operator to better judge and control the pre-tightening force of the conveying belt during the installation.
Description
Technical Field
The invention relates to the technical field of grinding machines, in particular to a grinding machine headstock with a tensioning structure.
Background
The headstock is an important part of a machine tool, is used for arranging a working spindle of the machine tool, transmission parts of the working spindle and corresponding additional mechanisms, and mainly plays a role in supporting the spindle and enabling the spindle to rotate so as to realize the functions of starting, braking, speed changing, reversing and the like of the spindle. Some headstock on the market adopt belt transmission, when installing, need to carry out pretension to the area, provide initial tension for the area to reinforcing belt transmission's frictional force, in order to guarantee normal transmission and not skid. The center distance between the main shaft of the traditional headstock and the transmission mechanism can not be adjusted, the belt is stretched manually during installation and then sleeved on the main shaft and the transmission mechanism, the installation mode is not only labor-consuming, at least two operators are needed to be matched during installation, the installation process is difficult to grasp, and the pretightening force can not be controlled.
Therefore, how to design a grinding machine head frame with a tensioning structure makes the installation more convenient, and can better control the magnitude of the pretightening force during installation, which is a technical problem to be solved by technical personnel in the field.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, and provides the grinding machine head frame with the tensioning structure, so that a conveyor belt can be more conveniently installed, and the pre-tightening force during installation can be better controlled.
The purpose of the invention is realized by the following technical scheme:
a grinder head stand with tensioning structure, comprising: the device comprises a base, a main shaft, a driving motor and a tensioning structure;
the main shaft is rotatably arranged on the base, and the driving motor is arranged on the base through a buffer pad;
the driving motor comprises an output shaft and a belt wheel, the belt wheel is arranged on the output shaft, the belt wheel is in driving connection with the main shaft through a driving belt, a containing groove and an avoiding through hole are formed in the base, the belt wheel and the driving belt are contained in the containing groove, an output shaft through hole matched with the avoiding through hole is formed in the buffer pad, and the output shaft penetrates through the output shaft through hole and the avoiding through hole;
the tensioning structure is arranged on the base and is in driving connection with the cushion pad.
In one embodiment, the driving motor is mounted on the base through a positioning bolt.
In one embodiment, the base is provided with a waist-shaped hole, the cushion pad is provided with a bolt through hole matched with the waist-shaped hole, and the positioning bolt is arranged through the bolt through hole and the waist-shaped hole.
In one embodiment, the pulley is keyed to the output shaft.
In one embodiment, the tensioning structure comprises a tensioning rotating shaft which is rotatably arranged in the accommodating groove of the base; the tensioning rotating shaft is provided with an eccentric wheel, and the eccentric wheel is pressed on the hole wall of the through hole of the output shaft.
In one embodiment, the tensioning rotating shaft is provided with a driving groove.
In one embodiment, the tensioning structure comprises a limiting snap ring, the tensioning rotating shaft is provided with a clamping groove, the limiting snap ring is sleeved on the clamping groove, and the limiting snap ring is pressed on the groove wall of the accommodating groove.
In one embodiment, the tensioning structure further includes a sealing ring, a sealing groove is formed in the tensioning rotating shaft, and the sealing ring is accommodated in the sealing groove.
In one embodiment, the base comprises a protective cover which covers the accommodating groove of the base.
In one embodiment, the base is provided with a hanging ring.
In conclusion, the grinding machine head frame with the tensioning structure can enable the conveying belt to be mounted more conveniently, and can better control the pre-tightening force during mounting.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic view of a headstock of a grinder having a tensioning arrangement in accordance with the present invention;
fig. 2 is a partial schematic view (one) of the sharpening bed head frame shown in fig. 1 with a tensioning arrangement;
FIG. 3 is a partially exploded view of a grinder head with a tensioning arrangement;
FIG. 4 is an enlarged view of FIG. 3 at A;
FIG. 5 is an exploded view of the tensioning mechanism;
FIG. 6 is a schematic view of the engagement of the tensioning structure with the cushion;
fig. 7 is a partial schematic view (two) of the sharpening head stand shown in fig. 1 with a tensioning arrangement.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 1 and 2, the present invention provides a grinder head stand 10 having a tension structure, including: a base 100, a spindle 200, a driving motor 300, and a tension structure 400. The spindle 200 is rotatably mounted on the base 100, and the driving motor 300 is disposed on the base 100 through a buffer pad 310 (shown in fig. 3).
As shown in fig. 2 and 3, the driving motor 300 includes an output shaft 320 and a belt wheel 330, the belt wheel 330 is disposed on the output shaft 320, the belt wheel 330 is drivingly connected to the main shaft 200 through a driving belt 210, the base 100 is provided with an accommodating groove 110 and an avoiding through hole 120 (as shown in fig. 3), the belt wheel 330 and the driving belt 210 are accommodated in the accommodating groove 110, the cushion pad 310 is provided with an output shaft through hole 311 (as shown in fig. 3) matching the avoiding through hole 120, and the output shaft 320 penetrates through the output shaft through hole 311 and the avoiding through hole 120. The diameter of the escape through hole 120 is significantly larger than the diameter of the output shaft 320, and the purpose of the escape through hole is to provide the necessary escape space for the output shaft 320 when the transmission belt 210 is pre-tightened. Preferably, the pulley 330 is keyed to the output shaft 320.
As shown in fig. 2, the tension structure 400 is installed on the base 100 and drives the connection cushion 310. During pretensioning, the tensioning structure 400 slides through the driving cushion 310, thereby changing the center distance between the output shaft 320 and the main shaft 200, and further tightening the belt 210. The specific pre-tightening process will be described in detail below.
In the present embodiment, as shown in fig. 3 and 4, the driving motor 300 is mounted on the base 100 by the positioning bolt 301. Preferably, the base 100 is provided with a waist-shaped hole 111, the cushion pad 310 is provided with a bolt through hole 312 matched with the waist-shaped hole 111, the positioning bolt 301 is inserted into the bolt through hole 312 and the waist-shaped hole 111, and the driving motor 300 and the cushion pad 310 are mounted on the base 100 by matching with the nut 302. Under the condition that the nut 302 and the positioning bolt 301 are not locked, the kidney-shaped hole 111 provides a certain moving space for the positioning bolt 301, that is, the kidney-shaped hole 111 is matched with the positioning bolt 301, so that the cushion pad 310 and the driving motor 300 can move within a certain range, and further, the center distance between the output shaft 320 and the main shaft 200 can be changed to a certain degree.
In this embodiment, as shown in fig. 5, the tension structure 400 includes a tension shaft 410, and the tension shaft 410 is rotatably inserted into the receiving groove 110 of the base 100. Wherein, the tensioning rotating shaft 410 is provided with an eccentric wheel 420, and the eccentric wheel 420 is pressed and held on the hole wall of the output shaft through hole 311. When the tension shaft 410 rotates, the eccentric 420 provides a pushing force to the cushion pad 310 (as shown in fig. 6), so that the cushion pad 310 and the driving motor 300 move. Preferably, the tension rotation shaft 410 is provided with a driving slot 411.
The principle of a sharpening bed head frame 10 with a tensioning structure according to the invention is explained below in connection with this embodiment:
the headstock 10 of the grinding machine with the tensioning structure of the invention can facilitate the installation of the driving motor 300 and the transmission belt 210, and can better control the pre-tightening force during the installation.
Specifically, as shown in fig. 3, when being installed, the cushion pad 310 is attached to the driving motor 300, and the pulley 330 is installed on the output shaft 320 of the driving motor 300. Subsequently, the driving motor 300 and the cushion 310 are mounted on the base 100 through the positioning bolt 301, and at this time, the cushion 310 is located between the driving motor 300 and the base 100; as shown in fig. 7, it should be noted that the nut 302 does not lock the positioning bolt 301, and the nut 302 and the positioning bolt 301 are in a loose state, so that the cushion pad 310 and the driving motor 300 can still move on the base 100, but can not fall off. Then, the belt 210 is fitted to the spindle 200 and the pulley 330, and since the driving motor 300 is positioned closer to the spindle 200 at this time, the belt 210 is easily fitted. Next, the operator inserts a tool into the driving slot 411 of the tension rotating shaft 410 and drives the tension rotating shaft 410 to rotate; as shown in fig. 6, as the tensioning rotary shaft 410 rotates, the eccentric wheel 420 pushes the buffer pad 310 to move away from the main shaft 200, and due to the positioning bolt 301, the driving motor 300 also moves along with the buffer pad 310, so as to increase the center distance between the main shaft 200 and the pulley 330, and thus the conveyor belt 210 is tensioned, i.e. the pre-tensioning of the conveyor belt 210 is realized. Finally, the operator can roughly judge the pre-tightening force of the conveyor belt 210 by judging the tightening degree of the conveyor belt 210; subsequently, the nut 302 is rotated to lock the nut 302 and the positioning bolt 301, so that the cushion 310 and the driving motor 300 are fixed on the base 100 and can not move any more, and the installation of the belt 210 is completed.
It should be noted that, when mounting, the driving motor 300 is mounted on the base 100, so that the operator does not need to hold the driving motor 300 all the time, and the hands of the operator can be released; moreover, during initial installation, the position of the driving motor 300 is relatively close to the main shaft 200, the center distance between the main shaft 200 and the belt wheel 330 is relatively small, and the conveying belt 210 does not need to be manually stretched first during sleeving, so that sleeving can be realized more conveniently and rapidly. During the pre-tightening, the operator may drive the tightening shaft 410 to rotate by using a tool, so that the eccentric 420 pushes the cushion pad 310 to move away from the main shaft 200, during which the center distance between the main shaft 200 and the pulley 330 increases, and the belt 210 is tightened. The operator can face the receiving groove 110, rotate the tightening shaft 410 with a tool with one hand, and press the belt 210 with the other hand to determine whether the tightening force is appropriate. Therefore, an operator can slowly adjust the center distance between the main shaft 200 and the belt pulley 330, so as to better control the pre-tightening force.
In one embodiment, the driving slot 411 of the tension shaft 410 is a slot structure, and the corresponding tool may be a screwdriver. Of course, the driving slot 411 may also adopt other structures according to actual needs, such as a cross-shaped slot structure, and only needs to match with a corresponding rotating tool, such as a cross-shaped screwdriver.
In one embodiment, as shown in fig. 5, the tension structure 400 includes a position-limiting snap ring 430, the tension shaft 410 is provided with a snap groove 412, the position-limiting snap ring 430 is sleeved on the snap groove 412, and the position-limiting snap ring 430 is pressed on a groove wall of the receiving groove 110. The limiting snap ring 430 is used for limiting the tensioning rotary shaft 410, and after the limiting snap ring 430 is sleeved on the clamping groove 412, the tensioning rotary shaft 410 cannot penetrate through the base 100, so that the tensioning rotary shaft 410 can be prevented from moving axially when a tool is used, and the tool can not be influenced to rotate the tensioning rotary shaft 410 by adopting the connecting mode.
In one embodiment, as shown in fig. 1, the base 100 includes a protective cover 130, and the protective cover 130 covers the receiving groove 110 of the base 100. Therefore, the parts in the accommodating groove 110 can be effectively protected, and meanwhile, the safety accident caused by the contact of an operator with the conveyor belt 210 or the main shaft 200 in work can be prevented.
In one embodiment, as shown in fig. 5, the tensioning structure 400 further includes a sealing ring 440, a sealing groove 413 is formed on the tensioning rotating shaft 410, and the sealing ring 440 is received in the sealing groove 413. The sealing ring 440 is provided to prevent external grease or moisture from entering the receiving groove 110 through a gap between the tension shaft 410 and the base 100.
In one embodiment, as shown in fig. 1, the hanging ring 140 is provided on the base 100, so that the head frame 10 with a tension structure can be conveniently lifted and transported during installation.
In summary, the grinder head frame 10 with the tensioning structure of the present invention can facilitate the installation of the conveyor belt 210, and can enable an operator to better judge and control the pre-tensioning force of the conveyor belt 210 during the installation.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A grinder head frame having a tensioning arrangement, comprising: the device comprises a base, a main shaft, a driving motor and a tensioning structure;
the main shaft is rotatably arranged on the base, and the driving motor is arranged on the base through a buffer pad;
the driving motor comprises an output shaft and a belt wheel, the belt wheel is arranged on the output shaft, the belt wheel is in driving connection with the main shaft through a driving belt, a containing groove and an avoiding through hole are formed in the base, the belt wheel and the driving belt are contained in the containing groove, an output shaft through hole matched with the avoiding through hole is formed in the buffer pad, and the output shaft penetrates through the output shaft through hole and the avoiding through hole;
the tensioning structure is arranged on the base and is in driving connection with the cushion pad;
the tensioning structure comprises a tensioning rotating shaft, and the tensioning rotating shaft is rotatably arranged in the accommodating groove of the base in a penetrating manner; the tensioning rotating shaft is provided with an eccentric wheel, and the eccentric wheel is pressed on the wall of the through hole of the output shaft; when the tensioning rotating shaft rotates, the eccentric wheel is used for providing a pushing force for the cushion pad, so that the cushion pad and the driving motor move.
2. A headstock having a tensioning arrangement according to claim 1, wherein the drive motor is mounted on the base by means of a set screw.
3. The headstock of claim 2, wherein the base has a kidney-shaped hole, the cushion pad has a bolt through hole matching with the kidney-shaped hole, and the positioning bolt is inserted into the bolt through hole and the kidney-shaped hole.
4. The headstock having the tensioning arrangement of claim 1, wherein the pulley is keyed to the output shaft.
5. The headstock with the tensioning structure for the grinding machine according to claim 1, wherein the tensioning rotary shaft is provided with a driving groove.
6. The headstock with the tensioning structure according to claim 1, wherein the tensioning structure comprises a limiting snap ring, a clamping groove is formed on the tensioning rotary shaft, the limiting snap ring is sleeved on the clamping groove, and the limiting snap ring is pressed on the groove wall of the accommodating groove.
7. The headstock with the tensioning structure of claim 1, further comprising a sealing ring, wherein the tensioning shaft is provided with a sealing groove, and the sealing ring is accommodated in the sealing groove.
8. The headstock having the tensioning arrangement of claim 1, wherein the base comprises a protective cover that covers over the receiving slot of the base.
9. The headstock having the tensioning arrangement of claim 1, wherein the base is provided with a bail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111373312.3A CN113927477B (en) | 2021-11-19 | 2021-11-19 | Grinding machine head frame with tensioning structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111373312.3A CN113927477B (en) | 2021-11-19 | 2021-11-19 | Grinding machine head frame with tensioning structure |
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| Publication Number | Publication Date |
|---|---|
| CN113927477A CN113927477A (en) | 2022-01-14 |
| CN113927477B true CN113927477B (en) | 2022-10-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111373312.3A Active CN113927477B (en) | 2021-11-19 | 2021-11-19 | Grinding machine head frame with tensioning structure |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08334154A (en) * | 1995-06-07 | 1996-12-17 | Koyo Seiko Co Ltd | Belt tensile force adjusting device |
| CN103009246A (en) * | 2012-11-07 | 2013-04-03 | 长春设备工艺研究所 | Double-eccentric bushing regulating device for rotation balance of high-rotating-speed polishing head |
| CN211075859U (en) * | 2019-11-19 | 2020-07-24 | 蜂巢智能转向科技河北有限公司 | Electric brake system and vehicle |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3526653B2 (en) * | 1995-05-16 | 2004-05-17 | 株式会社共立 | Portable work machine |
| JP2005083561A (en) * | 2003-09-11 | 2005-03-31 | Seiko Epson Corp | Belt tension adjusting device and recording device comprising the same |
| CN2917940Y (en) * | 2006-06-16 | 2007-07-04 | 王隆太 | Large swinging angle screw grinder machine grinding carriage |
| US7850560B2 (en) * | 2006-12-21 | 2010-12-14 | Schaeffler Technologies Gmbh & Co. Kg | Double eccentric tensioning device |
| CN103567838B (en) * | 2013-11-12 | 2016-06-22 | 上海昭程整流子科技有限公司 | Belt sander |
| CN204553727U (en) * | 2015-02-16 | 2015-08-12 | 宁波拓普智能刹车系统有限公司 | A kind of electronic brake system,electronic antiskid system motor belt tensioning controlling mechanism |
| CN205583913U (en) * | 2016-02-22 | 2016-09-14 | 天水星火机床有限责任公司 | Grinding machine headstock motor belt adjusting device |
| CN108000300A (en) * | 2017-12-05 | 2018-05-08 | 上海航天设备制造总厂 | A kind of polishing end effector suitable for robot |
| CN112476217A (en) * | 2020-12-14 | 2021-03-12 | 廊坊市亿创科技有限公司 | Beautiful decorations burnishing tool of robot |
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2021
- 2021-11-19 CN CN202111373312.3A patent/CN113927477B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08334154A (en) * | 1995-06-07 | 1996-12-17 | Koyo Seiko Co Ltd | Belt tensile force adjusting device |
| CN103009246A (en) * | 2012-11-07 | 2013-04-03 | 长春设备工艺研究所 | Double-eccentric bushing regulating device for rotation balance of high-rotating-speed polishing head |
| CN211075859U (en) * | 2019-11-19 | 2020-07-24 | 蜂巢智能转向科技河北有限公司 | Electric brake system and vehicle |
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| CN113927477A (en) | 2022-01-14 |
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