CN109986433B - CNC machining center power main shaft with elasticity in 360-degree circumferential direction - Google Patents
CNC machining center power main shaft with elasticity in 360-degree circumferential direction Download PDFInfo
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- CN109986433B CN109986433B CN201910378946.4A CN201910378946A CN109986433B CN 109986433 B CN109986433 B CN 109986433B CN 201910378946 A CN201910378946 A CN 201910378946A CN 109986433 B CN109986433 B CN 109986433B
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- 238000005498 polishing Methods 0.000 claims abstract description 85
- 230000007246 mechanism Effects 0.000 claims description 5
- 239000012858 resilient material Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 21
- 238000009434 installation Methods 0.000 description 46
- 239000011521 glass Substances 0.000 description 16
- 230000009471 action Effects 0.000 description 13
- 230000008878 coupling Effects 0.000 description 9
- 238000010168 coupling process Methods 0.000 description 9
- 238000005859 coupling reaction Methods 0.000 description 9
- 229910001651 emery Inorganic materials 0.000 description 9
- 238000001125 extrusion Methods 0.000 description 9
- 238000007517 polishing process Methods 0.000 description 9
- 239000000919 ceramic Substances 0.000 description 8
- 239000004579 marble Substances 0.000 description 8
- 238000007688 edging Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000013013 elastic material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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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
- B24B9/00—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor
- B24B9/02—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground
- B24B9/06—Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor characterised by a special design with respect to properties of materials specific to articles to be ground of non-metallic inorganic material, e.g. stone, ceramics, porcelain
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The invention relates to a CNC machining center power spindle with elasticity in the 360-degree circumferential direction, which comprises a grinding wheel mounting shaft, a rotary driving structure and a circumferential elastic structure, wherein the upper part of the grinding wheel mounting shaft is connected with the rotary driving structure, the lower part of the grinding wheel mounting shaft is sequentially provided with a grinding wheel and a polishing wheel from top to bottom, the circumferential elastic structure comprises an eccentric rotary structure, a spindle locking structure and an elastic structure, the upper end of the grinding wheel mounting shaft is provided with a locking groove, a cylinder body outside the locking groove is connected with the rotary driving structure, the elastic structure is arranged between the outer circumference of the upper end of the grinding wheel mounting shaft and the rotary driving structure, the spindle locking structure is connected with the eccentric rotary structure, the eccentric rotary driving structure is connected with the upper and lower driving structures, the rotary driving structure drives the spindle locking structure to move up and down to lock or unlock the grinding wheel mounting shaft. The invention has the advantages of high operation efficiency, good polishing effect and the like.
Description
Technical Field
The invention relates to the technical field of glass, ceramic, marble and other processing, in particular to a CNC machining center power spindle with elasticity in the circumferential direction of 360 degrees.
Background
The edging and polishing of the products such as glass, marble and ceramic are an important step in the processing technology, and the edging and polishing of the products such as glass, marble and ceramic enables the appearance of the products such as glass, marble and ceramic to be more attractive, and simultaneously reduces the damage to human bodies possibly caused by the products such as glass, marble and ceramic in the using and installing processes.
In the prior art, edging and polishing are generally carried out on products such as glass, marble, ceramic and the like by adopting a double-sided machine, and chamfering is also carried out after edging by adopting the double-sided machine, so that the processing technology of the products such as glass, marble, ceramic and the like becomes complex, and the equipment input cost is increased. At present, there are many glass processing devices related to glass processing, intelligent processing, polishing and the like, but the glass processing devices have the problems of low operation efficiency and poor polishing effect.
In the existing edging and polishing technology of products such as glass, marble and ceramic, as disclosed in the patent of the invention with the authority of CN205045988U and the name of glass processing integrated machine, a machine integrates a water knife, an edging main shaft head and a polishing main shaft head and has the functions of cutting, edging and polishing, but the technical problem of poor polishing effect in the prior art is not solved.
In addition, as the publication number is CN106113281A, the invention patent application of intelligent glass processing center equipment is named, the servo screw rod modules are respectively arranged on the X axis and the Y axis, and the sucking disc device sucks products to a designated position for glass processing, so that glass processing is automatically realized to a certain extent, but the glass processing effect and the polishing effect are difficult to ensure.
Disclosure of Invention
Although polishing apparatuses and polishers have been developed faster in recent years and the yields are also very high, the above problems have not been solved well all the time, and the applicant has studied and analyzed the prior art carefully, and found that the main causes are as follows: in the prior art, the relative position of the polishing wheel and the product is fixed, and because the relative position of the polishing wheel and the product is fixed, the polishing wheel is severely worn in the process of processing the product, and after the polishing wheel is worn, a gap exists between the polishing wheel and the surface of a workpiece, so that the polishing wheel cannot polish the workpiece, and therefore, the polishing cannot always achieve the required smoothness and brightness.
Therefore, in order to solve the technical problems, the invention provides the CNC machining center power spindle with high operation efficiency and good polishing effect and elastic in the 360-degree circumferential direction.
In order to achieve the above object, the following technical solutions are adopted.
The utility model provides a CNC machining center power main shaft that 360 degree circumferencial direction all had elasticity, includes grinding wheel installation axle and rotary drive structure, the upper portion and the rotary drive structure of grinding wheel installation axle are connected, the lower part top-down of grinding wheel installation axle is equipped with grinding wheel and polishing wheel in proper order, still includes circumference elastic force structure, circumference elastic force structure includes eccentric rotary structure, main shaft locking structure and elastic force structure, the upper end central point of grinding wheel installation axle puts and is equipped with the locking recess that is used for placing main shaft locking structure, the barrel upper surface outside the locking recess is connected with rotary drive structure, be equipped with the movable space between the outer periphery of grinding wheel installation axle and the interior periphery of rotary drive structure of relative position, be equipped with elastic force structure in the movable space between the outer periphery of the upper end of grinding wheel installation axle and the rotary drive structure, elastic force structure is used for applys elasticity to the grinding wheel installation axle, be used for placing main shaft locking structure in the locking recess, main shaft locking structure is connected with eccentric rotary drive structure, eccentric rotary drive structure is connected with upper and lower drive structure, rotary drive structure drives the grinding wheel installation axle and makes grinding wheel installation axle free to be in the state of grinding wheel installation through the eccentric rotary drive structure. The 360-degree elastic CNC machining center power main shaft mainly comprises a rotary driving structure for driving the grinding wheel mounting shaft to rotate, so that the grinding wheel mounting shaft is formed by parts such as a circumferential elastic structure for realizing free swing and locking, and the CNC machining center power main shaft is simple in integral structure and convenient to manufacture; the circumference elastic structure is composed of an eccentric rotating structure, a main shaft locking structure and an elastic structure, and the eccentric rotating structure enables the grinding wheel installation shaft to realize free eccentric rotation according to the shape and the size of a product in an unlocking state. Specifically, the main shaft locking structure moves upwards under the drive of the up-down driving structure, when the grinding wheel mounting shaft is in a locking state, the polishing wheel is used for polishing products, the number of the grinding wheels is two, the grinding wheel consists of a rough grinding wheel and a fine grinding wheel, the rough grinding wheel is used for rough grinding the products, then the fine grinding wheel is used for fine grinding the products, after the products are subjected to rough grinding and fine grinding, the main shaft locking structure is driven by the up-down driving structure to move downwards, so that the grinding wheel mounting shaft is in an unlocking free state, at the moment, the polishing wheel is used for polishing the products, free eccentric rotation can be realized according to the shape and the size of the products in the polishing process, the polishing effect is effectively ensured, and the required smoothness and brightness are achieved; the elastic structure is arranged between the grinding wheel mounting shaft and the rotating structure, the elastic structure uniformly applies force to the grinding wheel mounting shaft from the outer circumference of the grinding wheel mounting shaft in the process of polishing products by driving the polishing wheel by the grinding wheel mounting shaft, namely, under the action of the elastic structure, the polishing wheel always clings to the polishing working surface of the products in the whole polishing process to perform polishing action, so that the polishing precision and effect of the products are further ensured.
Further, the rotary driving structure comprises a main shaft motor, a driving belt pulley, a driven belt pulley and an outer driving shaft, wherein the main shaft motor is arranged on a motor mounting frame, the driving belt pulley is arranged on a driving shaft of the main shaft motor and connected with the driven belt pulley through a driving belt, the driven belt pulley is arranged on the outer driving shaft, the main shaft motor drives the outer driving shaft to rotate through driving, and then the outer driving shaft drives the grinding wheel mounting shaft to do rotary motion, the inner portion of the outer driving shaft is hollow, and the circumferential elastic structure is positioned at the hollow position of the inner portion of the outer driving shaft on the rotary driving structure. The main shaft motor drives the driven belt pulley to rotate through the driving belt pulley and the driving belt, the driven belt pulley further drives the outer driving shaft connected with the driven belt pulley to rotate along the center of the driven belt pulley, the outer driving shaft further drives the grinding wheel mounting shaft connected with the outer driving shaft to rotate, and the grinding wheel mounting shaft drives the grinding wheel to polish a product; or the grinding wheel mounting shaft drives the polishing wheel to polish the product.
Further, the longitudinal section of the locking groove is in a T-shaped shape, and the locking groove is a groove with a T-shaped section. The locking groove is a groove with a T-shaped cross section, so that the main shaft locking structure is convenient to place and install, and the stability of the main shaft locking structure in placement and installation is ensured.
Further, the longitudinal section of the grinding wheel installation shaft is in a T-shaped shape with a second-stage step, the grinding wheel installation shaft comprises a jacking column, a first extending column and a second extending column, the jacking column is arranged at the upper end and is used for being matched with a rotary driving structure, the first extending column and the second extending column are arranged below the jacking column and sequentially reduced from top to bottom in the shape of the cylinder, the groove with the T-shaped section is arranged at the central position of the jacking column and the first extending column, the jacking column part outside the groove with the T-shaped section is a cylinder, and the inner diameter of the cylinder on the grinding wheel installation shaft is the same as the inner diameter of the connecting position of the outer driving shaft and the grinding wheel installation shaft. The inner diameter of the upper and lower connecting position of the outer driving shaft and the upper barrel body of the grinding wheel installation shaft is the same as the inner diameter of the barrel body, so that after the main shaft locking structure positioned in the T-shaped groove on the grinding wheel installation shaft moves upwards, the main shaft locking structure is blocked by the inner wall of the outer driving shaft, the main shaft locking structure cannot eccentrically move, and the function of locking the grinding wheel installation shaft is realized through the main shaft locking structure.
Further, the elastic structure is an elastic ring made of elastic materials, and the elastic ring is sleeved outside a jack post on the grinding wheel mounting shaft. The elastic ring made of elastic materials is selected as an elastic structure, the elastic ring is sleeved outside the jack-up column, in the polishing process, due to the difference of the shape and the size of products, the products can apply acting force to the polishing wheels, the grinding wheel mounting shaft moves eccentrically and rotationally along with the polishing wheels under the acting force of the products, at the moment, the grinding wheel mounting shaft generates extrusion acting force to the elastic ring in the eccentric rotating process, and after the elastic ring receives extrusion acting force from the grinding wheel mounting shaft, reverse elastic force is generated to be applied to the grinding wheel mounting shaft, so that the grinding wheel mounting shaft drives the polishing wheels to always cling to the working surface of the products for polishing, and the polishing effect of the products is effectively ensured.
Further, the outside of jack-prop is equipped with round and elastic ring matched with arc sunken, the external diameter of jack-prop lower part is greater than the external diameter on jack-prop upper portion, arc sunken extends to jack-prop lower part from jack-prop upper portion to jack-prop indent. The setting of the outside arc of jack-prop is sunken, cooperatees with the elastic ring, makes the elastic ring be located the arc sunken, and jack-prop lower part external diameter is greater than the setting of upper portion external diameter, makes the elastic ring be in the arc sunken completely to make the effort of elastic ring act on in the jack-prop outside completely, ensure the elasticity effect of elasticity structure.
Further, the locking structure comprises a main shaft locking rod, the upper end part of the main shaft locking rod is of a double-sleeve structure with a bottom, the double-sleeve structure is composed of an inner sleeve and an outer sleeve, the inner sleeve is connected with the eccentric rotating structure, the sleeve height of the outer sleeve is smaller than or equal to the groove depth of the upper part of the T-shaped cross section groove, and the outer diameter of the outer sleeve is matched with the T-shaped cross section groove on the grinding wheel mounting shaft. The main shaft locking rod is arranged in a groove with a T-shaped cross section on the grinding wheel installation shaft, the inner sleeve is connected with a lower universal connection shaft in the eccentric rotating structure, and the upper and lower driving structure drives the grinding wheel installation shaft to be locked in an upward movement or the grinding wheel installation shaft to be unlocked in a downward movement through the eccentric rotating structure.
Further, the bottom of the double sleeve structure with the bottom is provided with a protruding column which protrudes downwards, and the protruding column is inserted into the lower part of the groove with the T-shaped cross section on the grinding wheel installation shaft. The arrangement of the convex column effectively ensures the connection stability of the main shaft locking rod and the grinding wheel mounting shaft.
Further, a spring is arranged in a space groove between the inner sleeve and the outer sleeve, the spring is sleeved outside the inner sleeve, and the upper end of the spring is abutted to the bent part of the outer driving shaft. The spring is additionally arranged between the inner sleeve and the outer sleeve at the upper end of the main shaft locking rod, when the main shaft locking rod is driven by the upper driving structure and the lower driving structure to move upwards, the upper surface of the outer sleeve on the main shaft locking rod extends out of the top of the T-shaped groove on the grinding wheel mounting shaft, at the moment, the main shaft locking rod is blocked by the inner wall of the outer driving shaft in the rotary driving structure and is in a locking state, and the main shaft locking rod further enables the grinding wheel mounting shaft to be in a locking state; when the driving external force acting on the main shaft locking rod to enable the main shaft locking rod to move upwards is relieved, the main shaft locking rod can move downwards into the T-shaped groove on the grinding wheel mounting shaft under the acting force of the spring, and at the moment, the spring plays a role in driving the main shaft locking rod to move downwards so that the grinding wheel mounting shaft is in an unlocking state, and free eccentric movement is realized; on the other hand, when the driving external force acting on the main shaft locking rod to enable the main shaft locking rod to move upwards is relieved, the up-and-down driving structure drives the main shaft locking rod to move downwards to enable the grinding wheel mounting shaft to be in an unlocking state, and at the moment, the spring plays an auxiliary role, so that the driving force of the up-and-down driving structure is reduced, the driving force of the up-and-down driving structure is effectively saved, and further the operation cost is effectively reduced.
Further, the eccentric rotating structure is a universal eccentric rotating structure and comprises a universal fixed shaft sleeve, an upper universal connecting shaft and a lower universal connecting shaft, the universal fixed shaft sleeve is connected with the upper and lower driving structures, the upper universal connecting shaft is arranged in the universal fixed shaft sleeve, the upper end of the upper universal connecting shaft is connected with the upper end of the lower universal connecting shaft through a universal connecting sleeve through a fixing pin, and the bottom end of the lower universal connecting shaft is connected with a main shaft locking rod through a fixing pin. The eccentric rotating structure is a universal eccentric rotating structure, so that the grinding wheel mounting shaft can apply force to the grinding wheel mounting shaft according to the shape and the size of a product, the grinding wheel mounting shaft can perform universal eccentric rotating motion under the rotation driving force of the rotating driving structure and the extrusion acting force of the product, the grinding wheel mounting shaft can perform universal eccentric movement within a 360-degree range, namely, the grinding wheel mounting shaft performs free eccentric movement along with the shape and the size of the product to be polished, the polishing finish and the brightness of the polishing wheel on the product are effectively ensured, and the polishing effect of the product is improved.
Further, the upper and lower driving structure comprises a cylinder fixing frame, an upper cylinder and a lower cylinder are arranged on the cylinder fixing frame, a piston rod of the upper cylinder and a piston rod of the lower cylinder are connected with the upper fixing frame and the lower fixing frame through H-shaped clamping blocks, an inner driving shaft fixing bearing is arranged at the lower end of the upper fixing frame and the lower fixing frame, an inner driving shaft is arranged in the inner driving shaft fixing bearing, the inner driving shaft stretches into the outer driving shaft, and the bottom of the inner driving shaft is connected with a universal fixing shaft sleeve on the eccentric rotating structure. The cylinder drives the inner driver shaft to move up and down, the inner driver shaft further drives the eccentric rotating structure to move up and down, and the eccentric rotating structure further drives the main shaft locking structure to move up and down to lock the grinding wheel mounting shaft or move down to unlock the grinding wheel mounting shaft.
The principle of the CNC machining center power main shaft with elasticity in the 360-degree circumferential direction is as follows:
1. action driving relation:
1. the rotary driving structure directly drives the grinding wheel installation shaft to perform rotary motion, and the grinding wheel installation shaft drives the grinding wheel or the polishing wheel to perform rotary motion to grind or polish the product;
2. the up-and-down driving structure drives the main shaft locking structure to move up and down through the eccentric rotating structure, the main shaft locking structure moves up to lock the grinding wheel mounting shaft, and the main shaft locking structure moves down to unlock the grinding wheel mounting shaft.
2. Grinding wheel installation shaft locking principle:
1. locking of the grinding wheel mounting shaft: the upper and lower driving structures drive the main shaft locking structure in the T-shaped groove on the grinding wheel mounting shaft to move upwards through the eccentric rotating structure, when parts at the joint of the main shaft locking structure in the T-shaped groove and the cylinder body are moved out of the upper surface of the cylinder body and enter the inner hollow position in the rotating driving structure, at the moment, the main shaft locking structure is blocked by the inner wall of the rotating driving structure, free movement cannot be realized under the action of the eccentric rotating structure, and the grinding wheel mounting shaft cannot be driven to move, at the moment, the grinding wheel mounting shaft is in a locking state, the grinding wheel polishes a product along with the grinding wheel mounting shaft under the rotating driving force of the rotating driving structure, specifically, the grinding wheel mounting shaft firstly drives a rough grinding wheel to rough grind the product, and then drives a fine grinding wheel to finely grind the product;
2. unlocking the grinding wheel mounting shaft: after the product is roughly ground and finely ground by the grinding wheel, the upper and lower driving structure moves down to the frame position through the eccentric rotating structure and/or the spring driving main shaft locking structure and completely enters the T-shaped groove on the grinding wheel mounting shaft, at the moment, the grinding wheel mounting shaft is in an unlocking free state, the polishing wheel polishes the product along with the grinding wheel mounting shaft under the rotary driving force of the rotary driving structure, in the polishing process, the product can generate acting force of the product to the polishing wheel due to the difference of the shape and/or the size of the product, the polishing wheel eccentrically moves under the acting force of the product, and the grinding wheel mounting shaft eccentrically rotates under the rotary driving force of the rotary driving structure and the movable extrusion acting force of the product to polish the product.
According to the 360-degree circumferential elastic CNC machining center power main shaft, the grinding wheel mounting shaft can be locked or unlocked according to requirements, namely, the grinding wheel mounting shaft can be in a locked state to polish products according to requirements, and also can be in an unlocked state to polish the products, so that the same grinding wheel mounting shaft can realize free switching of the two states, the working efficiency is high, and the polishing effect of the products is effectively ensured.
Specifically, compared with the prior art, the CNC machining center power main shaft with elasticity in the 360-degree circumferential direction has the following beneficial effects:
firstly, with low costs, the grinding wheel installation axle state freely switches: the circumference elastic structure is arranged, and the up-down driving structure drives the main shaft locking rod in the circumference elastic structure to move upwards to extend out of the upper surface of the grinding wheel mounting shaft, so that the main shaft is locked; the upper and lower driving structure drives the main shaft locking rod in the circumferential elastic structure to move downwards into the groove with the T-shaped cross section on the grinding wheel mounting shaft, so that the upper surface of the outer sleeve of the main shaft locking rod is flush with the upper surface of the grinding wheel mounting shaft, namely, the unlocking of the grinding wheel mounting shaft is realized, the grinding wheel mounting shaft can move freely and eccentrically along with the eccentric rotating structure under the action of the external force of a product, the grinding wheel mounting shaft on the same mechanism can realize the free conversion of locking and unlocking, and the grinding wheel mounting shaft does not need to be respectively arranged on two mechanisms, thereby effectively saving the operation cost;
secondly, the operation efficiency is high: the arrangement of the circumferential elastic structure realizes the free switching of locking and unlocking of the grinding wheel mounting shaft, and simultaneously, the grinding wheel and the polishing wheel are respectively arranged on the mounting head of the second extending column of the grinding wheel mounting shaft, so that one set of mechanism of the grinding wheel mounting shaft can be used for polishing and polishing products respectively, two sets of mechanisms are not needed for polishing and polishing the products, the time for switching the products in the polishing and polishing procedures in the prior art is saved, and the working efficiency is further effectively improved;
thirdly, the polishing effect is good: the setting of circumference elastic structure, when needs are polished the product, upper and lower drive structure drive main shaft locking lever moves down to the epaxial "T" style of calligraphy cross-section recess of emery wheel installation, make main shaft locking lever outer sleeve upper surface flush with emery wheel installation epaxial upper surface, realize the unblock of emery wheel installation promptly, at this moment, the emery wheel installation axle is in free state, at this moment, the polishing wheel is along with the emery wheel installation axle rotary motion, polish the product, in the polishing process, according to the shape and the size of product, the emery wheel installation axle can carry out free eccentric movement under the effort of product, promptly the product is in free state at the emery wheel installation axle, under the effort of product, can follow the shape and the size of product and make eccentric rotary motion, polish the product, simultaneously, the elastic ring can produce the effort that is reverse to the emery wheel installation axle after receiving the extrusion force that the emery wheel installation axle produced because of eccentric movement to the elastic ring, make the installation axle drive the wheel and hug closely the product surface all the time and polish the time, the polishing effect is effectively ensured.
Drawings
FIG. 1 is a schematic view of the overall structure of a grinding wheel mounting shaft in an unlocked state;
FIG. 2 is a schematic view of the overall structure of the grinding wheel mounting shaft of the present invention in a locked condition;
FIG. 3 is a schematic cross-sectional view of a single grinding wheel mounting shaft of the present invention;
FIG. 4 is a schematic diagram of the main structure of the rotary driving structure of the present invention;
FIG. 5 is an enlarged view of a portion of the circumferential spring structure of FIG. 1;
FIG. 6 is an enlarged view of portion A of FIG. 5;
FIG. 7 is a schematic cross-sectional view of the locking structure of FIG. 5;
fig. 8 is an enlarged view of a portion of the circumferential spring structure of fig. 2.
Detailed Description
In the description of the present invention, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The 360-degree circumferentially resilient CNC machining center power spindle of the present invention is described in further detail below with reference to specific embodiments and drawings.
As shown in fig. 1 to 8, a CNC machining center power spindle having elasticity in 360 degrees in circumferential direction comprises a head holder 100, a grinding wheel mounting shaft 200, a circumferential elastic structure 300 and a rotation driving structure 400, wherein a head top plate 110 is mounted at the top end of the head holder 100, the upper part of the grinding wheel mounting shaft 200 is connected with the rotation driving structure 400, the lower part of the grinding wheel mounting shaft 200 is sequentially provided with a grinding wheel 600 and a polishing wheel 700 from top to bottom, the circumferential elastic structure 300 comprises an eccentric rotation structure 310, a spindle locking structure 320 and an elastic structure 330, a locking groove 210 for placing the spindle locking structure 320 is arranged at the central position of the upper end of the grinding wheel mounting shaft 200, the upper surface of a cylinder 220 outside the locking groove 210 is connected with the rotation driving structure 400, a movable space is provided between the outer circumference of the grinding wheel mounting shaft 200 and the inner circumference of the rotation driving structure 400 at the opposite position, an elastic structure 330 is provided in the movable space between the outer circumference of the upper end of the grinding wheel mounting shaft 200 and the rotation driving structure 400, the elastic structure 330 is used for applying elasticity to the grinding wheel mounting shaft 200, the spindle locking structure 320 is used for placing the spindle locking structure 320 in the locking structure 320, the spindle locking structure 320 is connected with the spindle locking structure 320 and the rotation driving structure 500 is arranged on the upper top plate 110 and the rotation driving structure 500, the upper end of the rotation driving structure 500 is connected with the eccentric structure 500 respectively, the up-and-down driving structure 500 drives the main shaft locking structure 320 to move up and down by the eccentric rotating structure 310 to lock the grinding wheel mounting shaft 200 or unlock the grinding wheel mounting shaft 200 to leave the grinding wheel mounting shaft 200 in a free state. The 360-degree circumferential elastic CNC machining center power main shaft mainly comprises a rotary driving structure 400 for driving the grinding wheel mounting shaft 200 to rotate, a circumferential elastic structure 300 for enabling the grinding wheel mounting shaft 200 to swing and lock freely, and other parts, and has the advantages of simple integral structure and convenient manufacture; the circumferential elastic structure 300 is composed of an eccentric rotation structure 310, a spindle locking structure 320, and an elastic structure 330, and the eccentric rotation structure 310 enables the grinding wheel mounting shaft 200 to freely and eccentrically rotate according to the shape and size of a product in an unlocked state. Specifically, the spindle locking structure 320 moves upwards under the driving of the up-down driving structure 500, so that when the grinding wheel mounting shaft 200 is in a locked state, the two grinding wheels 600 are used for polishing products, the two grinding wheels 600 are formed by the rough grinding wheel 600 and the fine grinding wheel 600, the rough grinding is performed on the products through the rough grinding wheel 600, then the fine grinding is performed on the products through the fine grinding wheel 600, after the products are subjected to rough grinding and fine grinding, the spindle locking structure 320 is driven to move downwards by the up-down driving structure 500, so that the grinding wheel mounting shaft 200 is in an unlocking free state, at the moment, the polishing wheel 700 performs polishing action on the products, and free eccentric rotation can be realized according to the shape and the size of the products in the polishing process, so that the polishing effect is effectively ensured, and the required smoothness and brightness are achieved; the elastic structure 330 is arranged, the elastic structure 330 is positioned between the grinding wheel installation shaft 200 and the rotating structure, the elastic structure 330 uniformly applies force to the grinding wheel installation shaft 200 from the outer circumference of the grinding wheel installation shaft 200 in the process of polishing a product by driving the polishing wheel 700 by the grinding wheel installation shaft 200, namely, under the action of the elastic structure 330, the polishing wheel 700 always clings to a polishing working surface of the product in the whole polishing process to perform polishing action, and the polishing precision and effect of the product are further ensured.
As shown in fig. 1, 2 and 4, the rotary driving structure 400 includes a spindle motor 410, a driving pulley 430, a driven pulley 440 and an outer driving shaft 450, the spindle motor 410 is mounted on a motor mounting frame 420, the driving pulley 430 is mounted on the driving shaft of the spindle motor 410, the driving pulley 430 is connected with the driven pulley 440 through a driving belt, the driven pulley 440 is mounted on the outer driving shaft 450, the spindle motor 410 rotates by driving the outer driving shaft 450, and the outer driving shaft 450 drives the grinding wheel mounting shaft 200 to perform a rotary motion, the inside of the outer driving shaft 450 is hollow, and the circumferential elastic structure 300 is located at a hollow position inside the outer driving shaft 450 on the rotary driving structure 400. The spindle motor 410 drives the driven pulley 440 to rotate through the driving pulley 430 and the driving belt, the driven pulley 440 further drives the outer driving shaft 450 connected with the driven pulley 440 to rotate along the center of the driven pulley 440, the outer driving shaft 450 further drives the grinding wheel mounting shaft 200 connected with the outer driving shaft 450 to rotate, and the grinding wheel mounting shaft 200 drives the grinding wheel 600 to perform polishing action on the product; or the grinding wheel mounting shaft 200 drives the polishing wheel 700 to perform polishing action on the product.
As shown in fig. 1, 2 and 3, the longitudinal section of the locking groove 210 is in a T-shaped form, and the locking groove 210 is a T-shaped cross-section groove. The locking groove 210 is provided as a groove having a T-shaped cross section, which facilitates the placement and installation of the spindle locking structure 320 and ensures the stability of the placement and installation of the spindle locking structure 320. The vertical section of the grinding wheel installation shaft 200 is in a shape of a T with a two-stage step, and comprises a top column 240, a first extending column 250 and a second extending column 260, wherein the top column 240 is arranged at the upper end and is matched with the rotary driving structure 400, the first extending column 250 and the second extending column 260 are arranged below the top column 240 and sequentially reduce from top to bottom, the groove with the T-shaped section is arranged at the center position of the top column 240 and the first extending column 250, the part of the top column 240 outside the groove with the T-shaped section is a cylinder 220, and the inner diameter of the cylinder 220 on the grinding wheel installation shaft 200 is the same as the inner diameter of the connecting position of the outer driving shaft 450 and the grinding wheel installation shaft 200. The inner diameter of the upper and lower connection position of the outer driving shaft 450 and the cylinder 220 on the grinding wheel mounting shaft 200 is the same as the inner diameter of the cylinder 220, so that after the spindle locking structure 320 in the T-shaped groove on the grinding wheel mounting shaft 200 moves upwards, the spindle locking structure 320 is blocked by the inner wall of the outer driving shaft 450, so that the spindle locking structure 320 cannot move eccentrically, and the locking effect of the grinding wheel mounting shaft 200 is realized through the spindle locking structure 320.
As shown in fig. 1, 2 and 4 to 6, the elastic structure 330 is an elastic ring made of an elastic material, which is sleeved outside the top post 240 on the grinding wheel mounting shaft 200. The elastic ring made of elastic materials is selected as the elastic structure 330, the elastic ring is sleeved outside the top column 240, in the polishing process, due to the different shapes and sizes of products, the products can apply acting force to the polishing wheel 700, the grinding wheel mounting shaft 200 moves eccentrically and rotationally along with the polishing wheel 700 under the acting force of the products, at the moment, the grinding wheel mounting shaft 200 generates extrusion acting force to the elastic ring in the eccentric rotating process, after the elastic ring receives extrusion acting force from the grinding wheel mounting shaft 200, reverse elastic force is generated to apply to the grinding wheel mounting shaft 200, so that the grinding wheel mounting shaft 200 drives the polishing wheel 700 to always cling to the working surface of the products for polishing, and the polishing effect of the products is effectively ensured. The outer portion of the top post 240 is provided with a circle of arc-shaped concave 230 matched with the elastic ring, the outer diameter of the lower portion of the top post 240 is larger than the outer diameter of the upper portion of the top post 240, and the arc-shaped concave 230 extends from the upper portion of the top post 240 to the concave portion of the top post 240 to the lower portion of the top post 240. The arrangement of the arc-shaped recess 230 outside the top column 240 is matched with the elastic ring, so that the elastic ring is positioned in the arc-shaped recess 230, the outer diameter of the lower part of the top column 240 is larger than that of the upper part, the elastic ring is completely positioned in the arc-shaped recess 230, the acting force of the elastic ring is completely acted outside the top column 240, and the elastic action effect of the elastic structure 330 is ensured.
As shown in fig. 1, 2 and 7, the spindle locking structure 320 includes a spindle locking rod, the upper end of the spindle locking rod is a double-sleeve structure with a bottom, which is formed by an inner sleeve 321 and an outer sleeve 322, the inner sleeve 321 is connected with the eccentric rotating structure 310, the sleeve height of the outer sleeve 322 is less than or equal to the groove depth of the upper part of the groove with a T-shaped cross section, and the outer diameter of the outer sleeve 322 is matched with the groove with a T-shaped cross section on the grinding wheel mounting shaft 200. The main shaft locking rod is arranged in a groove with a T-shaped cross section on the grinding wheel mounting shaft 200, and the inner sleeve 321 is connected with the lower universal coupling shaft 314 in the eccentric rotating structure 310, and is driven by the up-and-down driving structure 500 through the eccentric rotating structure 310 to move up to lock the grinding wheel mounting shaft 200 or move down to unlock the grinding wheel mounting shaft 200. The bottom of the double sleeve structure with the bottom is provided with a protruding column 324 which protrudes downwards, and the protruding column 324 is inserted into the lower part of the groove with the T-shaped cross section on the grinding wheel mounting shaft 200. The provision of the boss 324 effectively ensures the stability of the connection of the spindle lock lever with the grinding wheel mounting shaft 200. A spring is arranged in a space groove between the inner sleeve 321 and the outer sleeve 322, the spring is sleeved outside the inner sleeve 321, and the upper end of the spring is abutted against the bending part of the outer driving shaft 450. The spring between the inner sleeve 322 and the outer sleeve 322 at the upper end of the main shaft locking rod is additionally arranged, when the main shaft locking rod is driven by the up-down driving structure 500 to move upwards until the upper surface of the outer sleeve 322 on the main shaft locking rod extends out of the top of the T-shaped groove on the grinding wheel mounting shaft 200, at this time, the main shaft locking rod is blocked by the inner wall of the outer driving shaft 450 in the rotary driving structure 400 and is in a locking state, and the main shaft locking rod further enables the grinding wheel mounting shaft 200 to be in a locking state; when the driving external force acting on the main shaft locking rod to enable the main shaft locking rod to move upwards is relieved, the main shaft locking rod can move downwards to the T-shaped groove on the grinding wheel mounting shaft 200 under the acting force of the spring, and at the moment, the spring plays a role in driving the main shaft locking rod to move downwards so that the grinding wheel mounting shaft 200 is in an unlocking state, and free eccentric movement is realized; on the other hand, when the driving external force acting on the spindle lock rod to move the spindle lock rod upwards is released, the up-and-down driving structure 500 drives the spindle lock rod to move downwards to enable the grinding wheel mounting shaft 200 to be in an unlocking state, and at the moment, the spring plays an auxiliary role, so that the driving force of the up-and-down driving structure 500 is reduced, the driving force of the up-and-down driving structure 500 is effectively saved, and further the operation cost is effectively reduced.
As shown in fig. 1, 2, 6 and 8, the eccentric rotating structure 310 is a universal eccentric rotating structure 310, and includes a universal fixing shaft sleeve 311, an upper universal coupling shaft 312 and a lower universal coupling shaft 314, wherein the universal fixing shaft sleeve 311 is connected with the upper and lower driving structures 500, the upper universal coupling shaft 312 is arranged in the universal fixing shaft sleeve 311, the upper end of the upper universal coupling shaft 312 is in pin connection with the universal fixing shaft sleeve 311 through a fixing pin, the bottom end of the upper universal coupling shaft 312 is connected with the upper end of the lower universal coupling shaft 314 through a universal coupling sleeve 313, and the bottom end of the lower universal coupling shaft 314 is connected with a spindle locking rod through a fixing pin. The eccentric rotating structure 310 is a universal eccentric rotating structure 310, so that the grinding wheel mounting shaft 200 can apply force to the grinding wheel mounting shaft 200 according to the shape and size of the product, the grinding wheel mounting shaft 200 can perform universal eccentric rotating motion under the rotation driving force of the rotary driving structure 400 and the extrusion acting force of the product, the grinding wheel mounting shaft 200 can perform universal eccentric movement within a 360-degree range, namely, the grinding wheel mounting shaft 200 performs free eccentric movement along with the shape and size of the product to be polished, the polishing finish and brightness of the polishing wheel 700 on the product are effectively ensured, and the polishing effect of the product is improved.
As shown in fig. 1, 2 and 5, the up-down driving structure 500 includes a cylinder fixing frame 530, an up-down cylinder 510 is mounted on the cylinder fixing frame 530, the cylinder fixing frame 530 is mounted on a head top plate 110 of the head fixing frame 100, a piston rod of the up-down cylinder 510 is connected with the up-down fixing frame 540 through an H-shaped clamping block 520, an inner driving shaft fixing bearing 550 is disposed at the lower end of the up-down fixing frame 540, an inner driving shaft 560 is mounted in the inner driving shaft fixing bearing 550, the inner driving shaft 560 extends into the outer driving shaft 450, and the bottom of the inner driving shaft 560 is connected with a universal fixing shaft sleeve 311 on the eccentric rotating structure 310. The cylinder drives the inner driver shaft 560 to move up and down, the inner driver shaft 560 further drives the eccentric rotary structure 310 to move up and down, and the eccentric rotary structure 310 further drives the main shaft locking structure 320 to move up and down to lock the grinding wheel mounting shaft 200 or move down to unlock the grinding wheel mounting shaft 200.
Referring to fig. 1 to 8, the principle of the CNC machining center power spindle having elasticity in the circumferential direction of 360 degrees according to the present invention is as follows.
1. Action driving relation:
1. the rotary driving structure 400 directly drives the grinding wheel mounting shaft 200 to perform rotary motion, and the grinding wheel mounting shaft 200 drives the grinding wheel 600 or the polishing wheel 700 to perform rotary motion to grind or polish the product;
2. the up-and-down driving structure 500 drives the spindle locking structure 320 to move up and down through the eccentric rotating structure 310, the spindle locking structure 320 moves up to lock the grinding wheel mounting shaft 200, and the spindle locking structure 320 moves down to unlock the grinding wheel mounting shaft 200.
2. Grinding wheel mounting shaft 200 locking principle:
1. locking of grinding wheel mounting shaft 200: the up-down driving structure 500 drives the main shaft locking structure 320 positioned in the T-shaped groove on the grinding wheel mounting shaft 200 to move upwards through the eccentric rotating structure 310, when the parts positioned at the joint of the main shaft locking structure 320 and the cylinder 220 in the T-shaped groove are moved out of the upper surface of the cylinder 220 and enter the inner hollow position in the rotating driving structure 400, at this moment, the main shaft locking structure 320 is blocked by the inner wall of the rotating driving structure 400, the free movement cannot be realized under the action of the eccentric rotating structure 310, and the grinding wheel mounting shaft 200 cannot be driven to move, at this moment, the grinding wheel mounting shaft 200 is in a locking state, the grinding wheel 600 polishes a product under the rotation driving force of the rotating driving structure 400 along with the grinding wheel mounting shaft 200, specifically, the grinding wheel mounting shaft 200 firstly drives the rough grinding wheel 600 to rough grind the product, and then drives the fine grinding wheel 600 to finely grind the product;
2. unlocking of grinding wheel mounting shaft 200: after the product is roughly and finely ground by the grinding wheel 600, the up-down driving structure 500 moves down to the frame position through the eccentric rotating structure 310 and/or the spring driving main shaft locking structure 320 to completely enter the T-shaped groove on the grinding wheel mounting shaft 200, at this time, the grinding wheel mounting shaft 200 is in an unlocking free state, the polishing wheel 700 polishes the product along with the grinding wheel mounting shaft 200 under the rotation driving force of the rotating driving structure 400, in the polishing process, the product can generate acting force of the product to the polishing wheel 700 due to the different shapes and/or sizes of the product, the polishing wheel 700 moves eccentrically under the acting force of the product, so that the grinding wheel mounting shaft 200 performs eccentric rotation movement under the rotation driving force of the rotating driving structure 400 and the movement extrusion acting force of the product, and the product is polished.
According to the CNC machining center power main shaft with the circumferential elastic structure 300, the grinding wheel mounting shaft 200 can be locked or unlocked according to requirements, namely, the grinding wheel mounting shaft 200 can be in a locked state to polish products according to requirements, and the grinding wheel mounting shaft 200 can also be in an unlocked state to polish products, so that the same grinding wheel mounting shaft 200 can realize free switching of two states, the working efficiency is high, and the polishing effect of the products is effectively ensured.
The foregoing examples are merely exemplary embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the invention, and that these obvious alternatives fall within the scope of the invention.
Claims (8)
1. The CNC machining center power main shaft with elasticity in the 360-degree circumferential direction comprises a grinding wheel mounting shaft and a rotary driving structure, wherein the upper part of the grinding wheel mounting shaft is connected with the rotary driving structure, and the lower part of the grinding wheel mounting shaft is sequentially provided with a grinding wheel and a polishing wheel from top to bottom; the grinding wheel locking mechanism is characterized in that a locking groove for placing a main shaft locking structure is formed in the center of the upper end of the grinding wheel mounting shaft, the upper surface of a cylinder body outside the locking groove is connected with a rotary driving structure, an elastic structure is arranged between the outer circumference of the upper end of the grinding wheel mounting shaft and the rotary driving structure, an outer sleeve of the main shaft locking structure is placed in the locking groove, an inner sleeve of the main shaft locking structure is connected with an eccentric rotary structure, the eccentric rotary structure is connected with an upper driving structure and a lower driving structure, the rotary driving structure drives the grinding wheel mounting shaft to perform rotary motion, the upper driving structure drives the main shaft locking structure to move up and down through the eccentric rotary structure so as to lock the grinding wheel mounting shaft or unlock the grinding wheel mounting shaft so as to enable the grinding wheel mounting shaft to be in a free state, the eccentric rotary structure comprises a universal eccentric rotary structure, an universal fixing shaft sleeve, an upper universal connecting shaft and a lower universal connecting shaft, and an upper universal connecting shaft are arranged in the universal fixing shaft sleeve, and the lower universal connecting shaft are connected with the universal connecting shaft, and the lower universal connecting shaft is connected with a main shaft locking rod.
2. The power spindle of a 360-degree circumferentially resilient CNC machining center according to claim 1, wherein the rotary drive structure includes a spindle motor mounted on a motor mount, a drive pulley mounted on an outer drive shaft, a driven pulley mounted on the outer drive shaft, the spindle motor being rotated by the outer drive shaft to thereby drive the grinding wheel mounting shaft for rotational movement, the outer drive shaft being hollow, the circumferential spring structure being located in an outer drive shaft hollow interior position on the rotary drive structure.
3. The 360 degree circumferentially resilient CNC machining center spindle of claim 2, wherein the locking groove has a longitudinal cross-section in the shape of a "T" and a cross-section in the shape of a "T".
4. The power spindle of a 360-degree circumferentially elastic CNC machining center according to claim 3, wherein the longitudinal section of the grinding wheel mounting shaft is in a 'T' -shaped with a secondary step, the longitudinal section comprises a top post, a first extending post and a second extending post, the top post is used for being matched with a rotary driving structure, the first extending post and the second extending post are located below the top post and sequentially reduced in shape from top to bottom, the 'T' -shaped section groove is located at the center positions of the top post and the first extending post, the top post part outside the 'T' -shaped section groove is a cylinder, and the inner diameter of the cylinder on the grinding wheel mounting shaft is identical to the inner diameter of the connecting position of the outer driving shaft and the grinding wheel mounting shaft.
5. The 360 degree circumferentially resilient CNC machining center spindle of claim 4, wherein the resilient structure is a resilient ring made of a resilient material that is sleeved outside a post on the grinding wheel mounting shaft.
6. The power spindle of a 360 degree circumferentially resilient CNC machining center of claim 5, wherein the outer portion of the post has a circular arc recess in cooperation with the resilient ring, the outer diameter of the lower portion of the post being larger than the outer diameter of the upper portion of the post, the arc recess extending inwardly from the upper portion of the post to the lower portion of the post.
7. The 360 ° circumferential resilient CNC machining center power spindle of any one of claims 1 to 6, wherein a spring is disposed in a space groove between the inner sleeve and the outer sleeve, the spring being sleeved outside the inner sleeve, an upper end of the spring abutting a bent portion of the outer drive shaft.
8. The CNC machining center power spindle having elastic force in all the circumferential directions of 360 degrees according to any one of claims 1 to 6, wherein the up-down driving structure comprises a cylinder fixing frame, an up-down cylinder is mounted on the cylinder fixing frame, a piston rod of the up-down cylinder is connected with the up-down fixing frame through an H-shaped clamping block, an inner driving shaft fixing bearing is disposed at the lower end of the up-down fixing frame, an inner driving shaft is mounted in the inner driving shaft fixing bearing, the inner driving shaft extends into the outer driving shaft, and the bottom of the inner driving shaft is connected with a universal fixing shaft sleeve on the eccentric rotating structure.
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| CN207027181U (en) * | 2016-06-28 | 2018-02-23 | 苏州宝时得电动工具有限公司 | Sander |
| CN109396993A (en) * | 2018-09-30 | 2019-03-01 | 扬州市管件厂有限公司 | Outer surface of pipe fittings grinding device based on centering type emery wheel |
| CN209737226U (en) * | 2019-05-08 | 2019-12-06 | 曾祥乐 | 360-degree CNC (computer numerical control) machining center power spindle with elasticity in circumferential direction |
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2019
- 2019-05-08 CN CN201910378946.4A patent/CN109986433B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB238249A (en) * | 1924-08-07 | 1926-11-04 | Micro Machine Company | Improvements in or relating to grinding or abrading machines |
| GB806043A (en) * | 1956-03-09 | 1958-12-17 | Ian Munro Yule | Improved tool for grinding annular seats |
| CN102765051A (en) * | 2012-07-25 | 2012-11-07 | 无锡机床股份有限公司 | Grinding wheel spindle structure of grinding machine |
| CN103934738A (en) * | 2014-04-25 | 2014-07-23 | 广东新海岸机械有限公司 | Grinding wheel balancing device of glass rapid edge grinding machine |
| CN207027181U (en) * | 2016-06-28 | 2018-02-23 | 苏州宝时得电动工具有限公司 | Sander |
| CN109396993A (en) * | 2018-09-30 | 2019-03-01 | 扬州市管件厂有限公司 | Outer surface of pipe fittings grinding device based on centering type emery wheel |
| CN209737226U (en) * | 2019-05-08 | 2019-12-06 | 曾祥乐 | 360-degree CNC (computer numerical control) machining center power spindle with elasticity in circumferential direction |
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