阅读说明：本技术 一种中心定位装置及其使用方法 (Center positioning device and use method thereof ) 是由 郑利强 林栋� 张元彪 杨洪亮 米旭伟 葛雪云 于 2020-06-28 设计创作，主要内容包括：本发明公开一种中心定位装置及其使用方法,涉及锯片加工技术领域,包括下托组件、上压组件、安装芯轴、滑套、弹性件、锁紧组件和压紧件,安装芯轴与下托组件固定连接,且安装芯轴位于下托组件上方,上压组件滑动套设于安装芯轴上,滑套滑动套设于上压组件上部,弹性件套设于滑套上,锁紧组件安装于滑套上,且锁紧组件位于弹性件上方,锁紧组件用于将弹性件锁紧于滑套上,弹性件远离滑套的一端与上压组件下部边缘的上表面相接触,压紧件安装于安装芯轴上,且压紧件位于滑套上方,压紧件用于调节滑套在竖直方向上的位置,上压组件与下托组件之间用于安装锯片,锯片的压紧摩擦力可调,端面跳动小,受基板平整度影响小,对基板要求降低。(The invention discloses a center positioning device and a using method thereof, relating to the technical field of saw blade processing, comprising a lower support component, an upper pressing component, a mounting mandrel, a sliding sleeve, an elastic component, a locking component and a pressing component, wherein the mounting mandrel is fixedly connected with the lower support component, the mounting mandrel is positioned above the lower support component, the upper pressing component is slidably sleeved on the mounting mandrel, the sliding sleeve is slidably sleeved on the upper part of the upper pressing component, the elastic component is sleeved on the sliding sleeve, the locking component is mounted on the sliding sleeve, the locking component is positioned above the elastic component, the locking component is used for locking the elastic component on the sliding sleeve, one end of the elastic component, which is far away from the sliding sleeve, is contacted with the upper surface of the lower edge of the upper pressing component, the pressing component is mounted on the mounting mandrel, the pressing component is positioned above the sliding sleeve, the pressing component is used for adjusting the position of the sliding sleeve, the compressing friction force of the saw blade is adjustable, the end face runout is small, the influence of the flatness of the substrate is small, and the requirement on the substrate is reduced.)

1. A central positioning device is characterized by comprising a lower support assembly, an upper pressing assembly, an installation mandrel, a sliding sleeve, an elastic piece, a locking assembly and a pressing piece, wherein the installation mandrel is fixedly connected with the lower support assembly, the installation mandrel is positioned above the lower support assembly, the upper pressing assembly is slidably sleeved on the installation mandrel, the sliding sleeve is slidably sleeved on the upper portion of the upper pressing assembly, the elastic piece is sleeved on the sliding sleeve, the locking assembly is installed on the sliding sleeve, the locking assembly is positioned above the elastic piece, the locking assembly is used for locking the elastic piece on the sliding sleeve, one end, away from the sliding sleeve, of the elastic piece is in contact with the upper surface of the lower edge of the upper pressing assembly, the pressing piece is installed on the installation mandrel, is positioned above the sliding sleeve, and is used for adjusting the position of the sliding sleeve in the vertical direction, and a saw blade is arranged between the upper pressing assembly and the lower supporting assembly.

2. The center positioning device according to claim 1, wherein the lower support assembly comprises a lower support plate, a flat pad and a fixing nut, the installation mandrel comprises a first shaft section and a second shaft section which are sequentially connected from top to bottom, the diameter of the first shaft section is larger than that of the second shaft section, the second shaft section penetrates through the lower support plate from top to bottom, the flat pad and the fixing nut are sequentially installed at one end, located below the lower support plate, of the second shaft section, and the lower support plate is made of wear-resistant materials.

3. The center positioning device according to claim 1, wherein the pressing assembly comprises an upper pressing plate and a pressing plate insert ring, the pressing plate insert ring is arranged on the lower surface of the upper pressing plate, the upper pressing plate comprises a cylindrical part and a circular ring part which are sequentially connected from top to bottom, the cylindrical part is sleeved on the installation core shaft in a sliding mode, one end, away from the sliding sleeve, of the elastic piece is in contact with the edge of the upper surface of the circular ring part, an annular groove is formed in the edge of the lower surface of the circular ring part, an annular protrusion is arranged on the upper surface of the pressing plate insert ring, the position of the annular protrusion corresponds to that of the annular groove, the structure of the annular protrusion is matched with that of the annular groove.

4. The center positioning device according to claim 2, further comprising a limiting assembly, wherein the limiting assembly comprises a limiting baffle and a plurality of screws, an annular limiting groove is formed in an upper portion of the inner side of the sliding sleeve, the limiting baffle is fixed on the upper surface of the cylindrical portion through the plurality of screws, and the limiting baffle is matched with the annular limiting groove to axially limit the sliding sleeve.

5. The centering device of claim 1, wherein said locking assembly comprises two locking nuts, said two locking nuts being threadably connected to said slide sleeve.

6. The center positioning device as claimed in claim 1, wherein the bottom end of the sliding sleeve extends outwards along the circumferential direction to form an annular edge, and the annular edge is used for limiting the elastic member.

7. The centering device of claim 1, wherein said resilient member is a belleville spring.

8. The centering device according to claim 1, wherein the pressing member is a pressing nut, the pressing nut is screwed on the upper part of the mounting mandrel, and the outer side wall of the pressing nut is provided with a scale.

9. A method of using a centering device according to any of claims 1-8, characterized in that it comprises the following steps:

step one, mounting the lower support assembly on a manual sliding table of a machine tool, fixing the mounting mandrel on the lower support assembly, then selecting a corresponding reducing sleeve according to the difference of the diameters of central holes of saw blades, mounting the reducing sleeve on the mounting mandrel, and then mounting the saw blades;

secondly, pressing the saw blade by using the upper pressing component, and then slidably sleeving the sheath provided with the elastic piece on the upper part of the upper pressing component;

and thirdly, mounting the pressing piece on the mounting mandrel, enabling the pressing piece to press the sliding sleeve, adjusting the position of the pressing piece in the vertical direction according to the friction force required by the saw blade in different tooth shifting processes, matching with a tooth shifting mechanism to shift the saw blade after adjustment, and then carrying out sharpening processing.

Technical Field

The invention relates to the technical field of saw blade machining, in particular to a center positioning device and a using method thereof.

Background

Before sharpening the saw teeth, the saw blade needs to be clamped, when the diamond circular saw blade is clamped, the base plate is generally positioned on the shaft through the central clamping piece, specifically, the central clamping piece is locked on the shaft and positioned on two sides of the base plate, the central clamping piece radially positions the base plate, and the base plate can rotate relative to the shaft; one side of the root of the edge of the substrate is contacted with the static pressure foot, the other side of the root of the edge of the substrate is pressed towards the static pressure foot through the movable pressure foot to realize axial positioning, and the movable pressure foot is matched with the gear shifting mechanism to shift the saw blade. The saw bit processing finishes and adorns on rotatory detecting instrument and detects static state with the amesdial and beats the comprehensive value of beating + machine tool machining error of the position base plate that is compressed tightly, and the base plate takes place to warp at the in-process that compresses tightly, resumes after loosening and beats, and the sawtooth is beated and is resumeed together with the base plate this moment, owing to adopt be that tooth root position fixes a position, and what compress tightly is the base plate border, and the base plate warp greatly, so the end face is beated also can be great, beats and the roughness relation of base plate is great, requires highly to the base.

Disclosure of Invention

In order to solve the technical problems, the invention provides a center positioning device and a use method thereof, wherein the pressing friction force is adjustable, the end face runout is small, the influence of the flatness of a substrate is small, and the requirement on the substrate is reduced.

In order to achieve the purpose, the invention provides the following scheme:

the invention provides a central positioning device which comprises a lower support assembly, an upper pressing assembly, an installation mandrel, a sliding sleeve, an elastic piece, a locking assembly and a pressing piece, wherein the installation mandrel is fixedly connected with the lower support assembly, the installation mandrel is positioned above the lower support assembly, the upper pressing assembly is slidably sleeved on the installation mandrel, the sliding sleeve is slidably sleeved on the upper part of the upper pressing assembly, the elastic piece is sleeved on the sliding sleeve, the locking assembly is installed on the sliding sleeve, the locking assembly is positioned above the elastic piece, the locking assembly is used for locking the elastic piece on the sliding sleeve, one end of the elastic piece, far away from the sliding sleeve, is in contact with the upper surface of the lower edge of the upper pressing assembly, the pressing piece is installed on the installation mandrel, the pressing piece is positioned above the sliding sleeve, and the pressing piece is used for adjusting the position of the sliding sleeve in the vertical direction, and a saw blade is arranged between the upper pressing assembly and the lower supporting assembly.

Preferably, the lower support assembly comprises a lower support plate, a flat pad and a fixing nut, the installation mandrel comprises a first shaft section and a second shaft section which are sequentially connected from top to bottom, the diameter of the first shaft section is larger than that of the second shaft section, the second shaft section penetrates through the lower support plate from top to bottom, the second shaft section is located at one end below the lower support plate is sequentially installed, the flat pad and the fixing nut, and the lower support plate is made of wear-resistant materials.

Preferably, it includes pressure disk and pressure disk insert to go up the pressure disk assembly, the pressure disk insert set up in go up the pressure disk lower surface, it includes cylindric and ring portion that from top to bottom connects gradually to go up the pressure disk, the cylindric slip cap is located the installation is epaxial, the elastic component is kept away from the one end of sliding sleeve with the upper surface edge of ring portion contacts, ring portion lower surface edge is provided with the annular groove, pressure disk insert upper surface is provided with annular arch, annular arch with the corresponding and structure phase-match in annular groove position, the pressure disk insert adopts wear-resistant material.

Preferably, the sliding sleeve further comprises a limiting assembly, the limiting assembly comprises a limiting blocking piece and a plurality of screws, an annular limiting groove is formed in the upper portion of the inner side of the sliding sleeve, the limiting blocking piece is fixed on the upper surface of the cylindrical portion through the plurality of screws, and the limiting blocking piece is matched with the annular limiting groove to axially limit the sliding sleeve.

Preferably, the locking assembly comprises two locking nuts, and the two locking nuts are connected to the sliding sleeve in a threaded mode.

Preferably, the sliding sleeve bottom extends outwards along circumference and forms annular border, annular border is used for the elastic component carries on spacingly.

Preferably, the elastic member is a belleville spring.

Preferably, the pressing piece is a pressing nut, the pressing nut is in threaded connection with the upper portion of the mounting core shaft, and scales are arranged on the outer side wall of the pressing nut.

The invention also provides a use method of the center positioning device, which comprises the following steps:

step one, mounting the lower support assembly on a manual sliding table of a machine tool, fixing the mounting mandrel on the lower support assembly, then selecting a corresponding reducing sleeve according to the difference of the diameters of central holes of saw blades, mounting the reducing sleeve on the mounting mandrel, and then mounting the saw blades;

secondly, pressing the saw blade by using the upper pressing component, and then slidably sleeving the sheath provided with the elastic piece on the upper part of the upper pressing component;

and thirdly, mounting the pressing piece on the mounting mandrel, enabling the pressing piece to press the sliding sleeve, adjusting the position of the pressing piece in the vertical direction according to the friction force required by the saw blade in different tooth shifting processes, matching with a tooth shifting mechanism to shift the saw blade after adjustment, and then carrying out sharpening processing.

Compared with the prior art, the invention has the following technical effects:

the invention provides a center positioning device and a use method thereof.A saw blade is arranged between an upper pressing assembly and a lower supporting assembly, a locking assembly is used for locking an elastic part on a sliding sleeve, one end of the elastic part, which is far away from the sliding sleeve, is contacted with the upper surface of the lower edge of the upper pressing assembly, a pressing part is arranged on a mounting mandrel, the pressing part is used for adjusting the position of the sliding sleeve in the vertical direction, so that the elastic part generates deformation, the pressure generated on the upper pressing assembly is different when the elastic part deforms, the friction force acting on the saw blade is also different, and the adjustment is further carried out according to different friction force requirements of the saw blade. Compared with the existing tooth root positioning, the method adopts the central positioning, namely the middle part of the substrate is pressed, the substrate has small deformation and small end face bounce, is slightly influenced by the flatness of the substrate, improves the processing precision and reduces the requirement on the substrate.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a cross-sectional view of a centering device provided by the present invention.

Description of reference numerals: 1. a saw blade; 2. installing a mandrel; 3. an upper platen; 4. an elastic member; 5. a compression member; 6. a sliding sleeve; 7. a limiting baffle plate; 8. locking the nut; 9. a screw; 10. a pressing disc is inlaid with a ring; 11. a lower supporting plate; 12. flattening the cushion; 13. and (5) fixing the nut.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention aims to provide a center positioning device and a using method thereof, which have the advantages of adjustable pressing friction force, small end face runout, small influence of the flatness of a substrate and low requirement on the substrate.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1, the embodiment provides a center positioning device, which includes a lower support assembly, an upper pressing assembly, a mounting core shaft 2, a sliding sleeve 6, an elastic member 4, a locking assembly and a pressing member 5, wherein the mounting core shaft 2 is fixedly connected with the lower support assembly, the mounting core shaft 2 is located above the lower support assembly, the upper pressing assembly is slidably sleeved on the mounting core shaft 2, the sliding sleeve 6 is slidably sleeved on the upper portion of the upper pressing assembly, the sliding sleeve 6 plays a role in positioning the upper pressing assembly with respect to the center, the elastic member 4 is sleeved on the sliding sleeve 6, the locking assembly is mounted on the sliding sleeve 6, the locking assembly is located above the elastic member 4, the locking assembly is used for locking the elastic member 4 on the sliding sleeve 6, one end of the elastic member 4, which is far away from the sliding sleeve 6, contacts with an upper surface of a lower edge of the upper pressing assembly, the pressing member 5 is mounted on the mounting core shaft 2, the pressing member 5 is located above, the upper pressing component and the lower supporting component are used for installing the saw blade 1. Elastic component 4 and pressing down 5 play the adjustment friction force effect, and pressing down 5 and making elastic component 4 produce deformation through adjusting sliding sleeve 6 position on vertical direction, and the elastic component 4 deformation difference is just different at last produced pressure on pressing the subassembly, and the frictional force that acts on saw bit 1 is just also different, and then requires to adjust according to the different frictional force of saw bit 1. For current tooth root position location, adopt central point to fix a position in this embodiment, what compress tightly promptly is the base plate middle part, and the base plate warp for a short time, and the end face is beated for a short time, receives the base plate roughness to influence for a short time, has promoted the machining precision, requires to reduce to the base plate.

In the embodiment, the central part of the saw blade 1 is used for positioning and dialing the teeth for indexing, the position near the central hole position of the substrate of the saw blade 1 is compressed by the central positioning device in the embodiment, the compression outer diameter of the central positioning device is generally consistent with the compression outer diameter in a use state, the saw blade 1 is indexed by the tooth dialing mechanism, and the pressure of the central positioning device can be adjusted according to different friction requirements due to different diameters of the saw blade 1. The central position of the saw tooth has left and right deviation along with the jumping of the substrate, so as to press the side edge of the saw blade 1 for processing the saw blade 1, after finishing, the saw tooth is arranged on a rotation detecting instrument, a dial indicator is used for detecting that the static jumping is the comprehensive value of the jumping value of the substrate at the pressed part plus the processing error of a machine tool, the jumping precision in the embodiment is greatly improved relative to the positioning of the tooth root part, the symmetry of the saw tooth on the substrate is influenced by the basic flatness, if the substrate jumping is smaller, the symmetry and the static jumping precision of the saw tooth can be ensured, if the substrate jumping is larger, the static jumping precision can be ensured, the main influence of poor symmetry of the saw tooth is the pin arranging effect, the static jumping can ensure that the cutting amount of each tooth is consistent, the consistency of the cutting amount of each tooth is improved, the cutting surface quality and the inevitable condition of no, the service life of the saw blade 1 is greatly increased. Here, the size of the substrate run-out is classified based on the small end face run-out in this embodiment. Therefore, under the condition that the substrate jumps slightly or greatly, the center positioning device in the embodiment can ensure the static jumping precision, namely, the necessary conditions of cutting surface quality and edge breakage prevention are met.

The lower support assembly comprises a lower support plate 11, a flat pad 12 and a fixing nut 13, the installation mandrel 2 comprises a first shaft section and a second shaft section which are sequentially connected from top to bottom, the diameter of the first shaft section is larger than that of the second shaft section, the second shaft section penetrates through the lower support plate 11 from top to bottom, the flat pad 12 and the fixing nut 13 are sequentially installed at one end, located below the lower support plate 11, of the second shaft section, and the installation mandrel 2 is fixed on the lower support plate 11 through the fixing nut 13 and the flat pad 12 to lock the second shaft section and match with a ladder between the first shaft section and the second shaft section. The lower supporting plate 11 is made of wear-resistant materials, specifically, the lower supporting plate 11 is made of Cr12MoV and is subjected to surface TD plating special treatment, so that the wear is small in the tooth shifting process of the saw blade 1, and the saw blade 1 is prevented from being scratched.

Go up the pressure subassembly and include pressure disk 3 and pressure disk insert 10, pressure disk insert 10 sets up in last pressure disk 3 lower surface, it includes the cylindric portion and the ring portion that from top to bottom connect gradually to go up pressure disk 3, the cylindric sliding sleeve is located on installation dabber 2, the one end that sliding sleeve 6 was kept away from to elastic component 4 contacts with the upper surface edge of ring portion, ring portion lower surface edge is provided with the annular groove, pressure disk insert 10 upper surface is provided with the annular arch, the annular arch is corresponding and the structure phase-match with the annular groove position, the annular arch is inlayed and is realized pressure disk insert 10 and last pressure disk 3's being connected in the annular groove. The pressure plate insert ring 10 is made of wear-resistant materials, specifically, the pressure plate insert ring 10 is made of Cr12MoV and is subjected to surface TD plating special treatment, so that the wear is very small in the tooth shifting process of the saw blade 1, and the saw blade 1 is prevented from being scratched.

Still include spacing subassembly in this implementation, spacing subassembly includes spacing separation blade 7 and a plurality of screw 9, the inboard upper portion of sliding sleeve 6 is provided with annular spacing groove, be fixed in cylindric upper surface with spacing separation blade 7 through a plurality of screw 9, and spacing separation blade 7 is located the top of annular spacing groove bottom surface, spacing separation blade 7 cooperatees with annular spacing groove and carries out the axial spacingly to sliding sleeve 6, 6 rebound of restriction sliding sleeve, realized elastic component 4 through spacing subassembly simultaneously, go up pressure disk 3 and sliding sleeve 6 equipment together, can be more simple and convenient when installing dabber 2 with it after the equipment.

Specifically, the locking assembly comprises two locking nuts 8, the two locking nuts 8 are in threaded connection with the sliding sleeve 6, and the two locking nuts 8 limit the upper end of the central part of the elastic part 4. Two lock nuts 8 are used in a superposed mode, so that the lock nuts 8 below are ensured not to loosen after being fastened, and the elastic piece 4 is installed more firmly.

Specifically, 6 bottom of sliding sleeve outwards extend along circumference and form annular border, and annular border is used for elastic component 4 to carry on spacingly, and the lower extreme of the central point of elastic component 4 is carried on spacingly by annular border after elastic component 4 cover is located on sliding sleeve 6.

In this embodiment, the elastic member 4 is a belleville spring.

In this embodiment, the pressing member 5 is a pressing nut, the pressing nut is screwed on the upper portion of the mounting core shaft 2, and the outer side wall of the pressing nut is provided with scales. The pressure is determined by the torque wrench when the pressure is determined for the first time, and because the compression nut is provided with the scales, the scales determined for the first time are remembered, and after the compression nut is rotated to the scales when the clamp is installed again, the friction force generated when the saw blade 1 rotates is also consistent.

The embodiment also provides a use method of the center positioning device, which comprises the following steps:

step one, mounting a lower support assembly on a manual sliding table of a machine tool, wherein the manual sliding table is used for adjusting the central position of a saw blade 1, fixing a mounting mandrel 2 on the lower support assembly, then selecting a corresponding reducing sleeve according to the difference of the diameters of central holes of the saw blade 1, mounting the reducing sleeve on the mounting mandrel 2, and then mounting the saw blade 1;

secondly, pressing the saw blade 1 by using an upper pressing component, and then slidably sleeving a sheath provided with an elastic part 4 on the upper part of the upper pressing component;

step three, installing the pressing piece 5 on the installation mandrel 2, enabling the pressing piece 5 to press the sliding sleeve 6, adjusting the position of the pressing piece 5 in the vertical direction according to the friction force required by the saw blade 1 in different tooth shifting processes, matching the tooth shifting mechanism to shift the saw blade 1 after adjustment, and then carrying out sharpening processing. Specifically, after the first tooth of the saw blade 1 is machined, the next tooth is moved to a position to be machined through the friction force generated by the shifting needle and the central clamping device driven by the interpolating rotation of the gear shifting mechanism and the central positioning function, and then the system automatically machines the second tooth.

The principle and the implementation mode of the present invention are explained by applying specific examples in the present specification, and the above descriptions of the examples are only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.