CN114453998A

CN114453998A - Indexing fluted disc grinding positioning mechanism

Info

Publication number: CN114453998A
Application number: CN202210169032.9A
Authority: CN
Inventors: 张建林; 赵国利; 杨晗; 赵伟; 高兆春; 葛舒亮
Original assignee: Zhejiang Headman Intelligent Equipment Co ltd
Current assignee: Zhejiang Headman Intelligent Equipment Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-05-10

Abstract

The invention provides a dividing fluted disc grinding and positioning mechanism, and belongs to the technical field of machinery. It has solved the problem that current graduation fluted disc clamping positioning efficiency is low. This graduation fluted disc grinding positioning mechanism, include the driving piece and be annular anchor clamps body, the tip of anchor clamps body one end has that the coaxial line sets up all be annular interior ring portion and lie in the outer annular portion of interior ring portion, form recessed being used for that supplies graduation fluted disc tip to stretch into between interior ring portion and the outer annular portion and be annular spacing groove, the terminal surface of outer annular portion is for being annular locating surface, be provided with the cover that expands in the interior ring portion, the driving piece can drive the pull rod axial displacement who passes anchor clamps body hole and make the cover that expands outwards takes place elastic deformation. This graduation fluted disc grinding positioning mechanism has the advantage that location effect is high.

Description

Indexing fluted disc grinding positioning mechanism

Technical Field

The invention belongs to the technical field of machinery, relates to a positioning mechanism, and particularly relates to a grinding positioning mechanism of an indexing fluted disc.

Background

In machining, a workpiece is machined in a rotating type equal-division mode, clamping and positioning are needed to be conducted so as to facilitate machining, and after the workpiece is machined for the first time, the workpiece needs to be rotated so as to conduct re-machining in different angles and different positions.

The indexing fluted disc is the rotary workpiece, the whole indexing fluted disc is annular, the outer side of one end of the indexing fluted disc is recessed to form a step-shaped structure, the end face of the other end of the indexing fluted disc is provided with a plurality of inclined planes to be ground, and the inclined planes to be ground are distributed in a circumferential manner.

When the indexing fluted disc is used for grinding, one end of the indexing fluted disc, which is in a step shape, needs to be stably clamped so as to ensure the precision and stability of grinding of the inclined plane at the other end. However, the existing indexing fluted disc clamping usually adopts a simple clamp operated manually, the clamping precision is low, careful alignment is needed during each clamping, the clamping is repeatedly positioned, time and labor are wasted, and the positioning efficiency is low.

Disclosure of Invention

The invention aims to provide a dividing fluted disc grinding and positioning mechanism aiming at the problems in the prior art, and solves the problem of low clamping and positioning efficiency of the existing dividing fluted disc.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides an indexing fluted disc grinding positioning mechanism, includes the driving piece and is annular anchor clamps body, its characterized in that, the tip that presss from both sides specific one end has that the coaxial line sets up all is annular interior ring portion and lies in the outer annular portion of interior ring portion, form recessed being used for that supplies indexing fluted disc tip to stretch into between interior ring portion and the outer annular portion and be annular spacing groove, the terminal surface of outer ring portion is for being annular locating surface, be provided with the cover that expands in the interior ring portion, the driving piece can drive the pull rod axial displacement who passes anchor clamps body hole and make the cover that expands outwards takes place elastic deformation.

When the indexing fluted disc grinding and positioning mechanism is used, one end of the indexing fluted disc to be fixed extends into the limiting groove, the annular positioning surface on the outer ring part of the clamp body can abut against the step surface of the indexing fluted disc, and at the moment, the inner ring part and the expansion sleeve extend into the inner hole of the indexing fluted disc. Here, come to carry out coarse positioning to the radial position of dividing the fluted disc through spacing groove and interior ring portion, it is spacing to stabilize the axial position of dividing the fluted disc through leaning on of locating surface and step face, realizes that dividing the fluted disc is spacing before the centre gripping location. And the driving piece works to pull the pull rod penetrating through the inner hole of the clamp body to move axially and act on the expansion sleeve, so that the expansion sleeve expands outwards and is attached to the inner wall of the indexing fluted disc to expand the indexing fluted disc tightly, and positioning is realized.

In the process of clamping and positioning the indexing fluted disc by the indexing fluted disc grinding and positioning mechanism, only one end of the indexing fluted disc needs to be placed into the limiting groove, and the driving piece is controlled to work, so that the operation is simple. When the centre gripping location, through the support of outer ring portion locating surface, the indexing fluted disc has been avoided taking place axial displacement, axial error when having eliminated the centre gripping location, need not to carry out axial position's readjustment, and simultaneously, carry out the coarse positioning of indexing fluted disc through spacing groove and interior crown, inject the radial position of indexing fluted disc, tight indexing fluted disc expands by the cover circumference expansion that expands that is arranged in indexing fluted disc hole again, radial precision when having guaranteed indexing fluted disc location, make this indexing fluted disc grinding positioning mechanism positioning accuracy high when centre gripping location indexing fluted disc, can once the centre gripping is accomplished, and the positioning efficiency is improved.

In an above-mentioned indexing fluted disc grinding positioning mechanism, the outside of interior ring portion outer end has the first spigot surface that is coniform, the diameter of spigot surface one is crescent from outside to inside, the cover that expands is established the outside of interior ring portion and the cover inboard that expands have with spigot surface one pastes the spigot surface two that leans on mutually, can drive during the pull rod axial displacement the cover that expands moves to spacing groove bottom surface direction. The expansion sleeve is enabled to receive uniform acting force in the circumferential direction when moving towards the bottom surface of the limiting groove through the conical guide surface I, the expansion sleeve is uniformly expanded outwards in the elastic deformation process, the clamping precision is improved, the adjusting times during clamping and positioning are reduced, and the positioning efficiency is improved.

In foretell indexing fluted disc grinding positioning mechanism, the pull rod is shaft-like, its inner with the driving piece is connected, and the outer end is certainly the outer terminal surface of anchor clamps is worn out, the outside of pull rod outer end has the protrusion and is annular fender edge, keep off along the inner terminal surface with a position of spigot surface corresponds the department and has the protrusion and be the annular portion of leaning on, lean on the portion of leaning on lean on the outer terminal surface of the cover that expands. The abutting part at the inner end of the pull rod blocking edge is used for pushing the expansion sleeve to deform, corresponds to one position of the guide surface and is in a circular ring shape, so that the expansion sleeve is stressed and expanded more uniformly, the clamping is more stable, and the positioning efficiency is improved.

In the indexing fluted disc grinding and positioning mechanism, the inner side of the expansion sleeve is provided with a convex part which protrudes to form an annular shape, the outer end face of the inner ring part is provided with a limit rod which protrudes axially to form a rod shape, the convex part is correspondingly provided with a limit hole along the axial direction, and the limit rod extends into the limit hole. The radial position of the expansion sleeve is directionally limited through the limiting rod and the limiting hole, and the expansion sleeve is prevented from being subjected to position deviation.

In the indexing fluted disc grinding and positioning mechanism, the outer end face of the inner ring part is also provided with a concave spring hole, a return spring is arranged in the spring hole, and the return spring partially extends out of the spring hole and abuts against the inner end face of the convex part. The elastic reset is carried out through the auxiliary expanding sleeve of the reset spring, and the requirement on the elasticity of the expanding sleeve is reduced.

In the above indexing fluted disc grinding and positioning mechanism, the positioning surface is a plane.

In foretell indexing fluted disc grinding positioning mechanism, the anchor clamps body is established the backer in the positioning core axle outside including all being annular positioning core axle and cover, interior ring portion is located the positioning core is epaxial, outer ring portion is located on the backer, the interior terminal surface and the medial surface of backer all with the positioning core axle pastes mutually and pastes and fixes through the fastener between the two. The split type clamp body is convenient to process, and the stability of the split type clamp body after assembly is improved by adopting a mode that the split type clamp body and the split type clamp body are attached to each other.

In foretell division fluted disc grinding positioning mechanism, the driving piece includes the cylinder body, sets up piston rod and cover in the cylinder body and establishes the rotatory casing in the cylinder body outside, the anchor clamps body with the cylinder body links firmly, the piston rod with the inner of pull rod links firmly, be provided with bearing and rotatory casing between rotatory casing and the cylinder body and can be for cylinder body circumferential direction. When this driving piece uses, can keep away from the specific one end of anchor clamps with the cylinder body and link firmly on the carousel, link firmly rotary shell through a support body, keep rotary shell motionless, after the inclined plane of graduation fluted disc centre gripping, after having processed the inclined plane of primary importance, the accessible carousel drives the cylinder body and the circumference position of anchor clamps body circumferential direction's mode adjustment graduation fluted disc to carry out the grinding on next inclined plane.

Compared with the prior art, the indexing fluted disc grinding and positioning mechanism has the following advantages:

1. in the process of clamping and positioning the indexing fluted disc by the indexing fluted disc grinding and positioning mechanism, only one end of the indexing fluted disc needs to be placed into the limiting groove, and the driving piece is controlled to work, so that the operation is simple.

2. When centre gripping location graduation fluted disc, through the support of outer loop portion locating surface, the axial displacement has been avoided taking place to the graduation fluted disc, axial error when having eliminated the centre gripping location, need not to carry out axial position's readjustment, and simultaneously, carry out the coarse positioning of graduation fluted disc through spacing groove and interior crown portion, inject the radial position of graduation fluted disc, the radial distance of the removal of graduation fluted disc when having reduced the location, expand tight graduation fluted disc by the bloated cover circumference expansion that is arranged in the graduation fluted disc hole again, radial precision when having guaranteed the graduation fluted disc location, make this graduation fluted disc grinding positioning mechanism positioning accuracy when centre gripping location graduation fluted disc high, can once the centre gripping accomplish, positioning efficiency is improved.

Drawings

FIG. 1 is a schematic cross-sectional view of the indexing fluted disc grinding and positioning mechanism.

FIG. 2 is a schematic cross-sectional view of the indexing fluted disc grinding and positioning mechanism at another angle.

Fig. 3 is a partial enlarged view of the expansion sleeve.

Fig. 4 is a structural schematic diagram of the expansion sleeve.

Fig. 5 is a schematic view of the structure of the indexing toothed disc.

In the figure, 1, a driving part; 11. a cylinder body; 12. a piston rod; 13. a rotating housing; 2. a clamp body; 21. positioning the mandrel; 21a, an inner ring part; 21b, a first guide surface; 21c, spring holes; 22. backing a mountain; 22a, an outer ring portion; 22b, a positioning surface; 23. a limiting groove; 3. dividing a fluted disc; 31. processing the end; 31a, a bevel; 32. a fixed end; 33. a step surface; 4. expanding the sleeve; 41. a second guide surface; 42. a convex portion; 43. a limiting hole; 44. a deformation groove; 5. a pull rod; 51. blocking edges; 52. an abutting portion; 6. a limiting rod; 7. a return spring; 8. and a bearing.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 3, the indexing toothed disc grinding and positioning mechanism comprises a driving member 1 and an annular clamp body 2. The driving part 1 comprises a cylinder body 11, a piston rod 12 arranged in the cylinder body 11 and a cylindrical rotating shell 13 sleeved outside the cylinder body 11, the clamp body 2 is fixedly connected with the cylinder body 11, a bearing 8 is arranged between the rotating shell 13 and the cylinder body 11, and the rotating shell 13 can rotate circumferentially relative to the cylinder body 11. In this embodiment, a plurality of sealing structures, specifically oil seals, are further disposed between the inner side of the rotary housing 13 and the outer side of the cylinder 11, or other existing sealing structures such as sealing rings are adopted.

The end part of the clamp body 2 far away from one end of the cylinder body 11 is provided with a coaxial inner ring part 21a and an outer ring part 22a which are both annular, and a concave annular limiting groove 23 for the end part of the indexing fluted disc 3 to extend into is formed between the inner ring part 21a and the outer ring part 22 a. In this embodiment, the fixture body 2 includes a positioning core shaft 21 and a backer 22, the positioning core shaft 21 and the backer 22 are both annular, the inner ring portion 21a is located on the positioning core shaft 21, the outer ring portion 22a is located on the backer 22, an inner end surface and an inner side surface of the backer 22 are both attached to the positioning core shaft 21, and the two are fixed by a fastener.

The terminal surface of outer ring portion 22a is for being the planar locating surface 22b of ring shape, the cover is equipped with and is the annular cover 4 that expands of circle on the interior ring portion 21a, wear to be equipped with in the 2 holes of the anchor clamps body and be the pull rod 5 of stock form, the inner and the piston rod 12 of this pull rod 5 link firmly, the outer terminal surface of the anchor clamps body 2 is worn out to the outer end of pull rod 5, the outside of the 5 outer ends of pull rod has the protrusion and is the annular fender edge 51 of circle, should keep off to have the protrusion on the terminal surface in 51 to be the annular portion 52 that supports of leaning on, support to lean on portion 52 and lean on the outer terminal surface of the cover 4 that expands.

As shown in fig. 4, the side portion of the circular expansion sleeve 4 is provided with a plurality of strip-shaped deformation grooves 44, each deformation groove 44 is strip-shaped and is axially arranged, two sides of each deformation groove 44 extend to the inner side surface and the outer side surface of the expansion sleeve 4, the deformation grooves are arranged in a penetrating manner, the deformation grooves 44 are evenly distributed around the axis of the expansion sleeve 4, one end of each deformation groove 44 can be communicated to the end surface of the expansion sleeve 4, and the end surfaces of the expansion sleeves 4 communicated with the adjacent two deformation grooves 44 are different. Each deformation groove 44 is provided with a rubber-like filler for stabilizing the structure of the expansion sleeve 4. When the expansion sleeve 4 is stressed, the expansion sleeve can be elastically deformed outwards, and can be restored to an initial state under the action of self elasticity when not stressed.

The outer side of the outer end of the inner ring part 21a is provided with a conical guide surface I21 b, the diameter of the guide surface I21 b is gradually increased from outside to inside, the inner side of the expansion sleeve 4 is provided with a guide surface II 41 which is attached to the guide surface I21 b, and the expansion sleeve 4 can be driven to move towards the bottom surface of the limiting groove 23 along the guide surface I21 b when the pull rod 5 moves axially. Here, the position of the first guide surface 21b is opposite to the position of the abutting portion 52 on the pull rod 5.

The inner side of the outer end of the expansion sleeve 4 is provided with a convex part 42 which protrudes inwards to form a circular ring shape, the outer end face of the inner ring part 21a is fixed with a limiting rod 6 which protrudes axially to form a round rod shape, a limiting hole 43 is correspondingly formed in the convex part 42 along the axial direction, and the limiting rod 6 extends into the limiting hole 43. The outer end face of the inner ring portion 21a is further provided with a plurality of concave spring holes 21c, the plurality of spring holes 21c are uniformly distributed around the axis, each spring hole 21c is internally provided with a return spring 7, and the return spring 7 partially extends out of the spring hole 21c and abuts against the inner end face of the convex portion 42.

As shown in fig. 5, the indexing toothed disc 3 is annular, and has an upper end serving as a processing end 31 having an inclined surface 31a to be ground, and a lower end serving as a fixed end 32, wherein the fixed end 32 has an outer diameter smaller than that of the processing end 31, and forms an annular step surface 33 on the outer side of the middle portion of the indexing toothed disc 3.

When the indexing fluted disc grinding and positioning mechanism is used, one end of the cylinder body 11, which is far away from the clamp body 2, can be fixedly connected on the rotary disc, and the rotary shell 13 is fixedly connected through a frame body, so that the rotary shell 13 is kept immovable. The fixed end 32 of the indexing toothed disc 3 is inserted into the limiting groove 23, so that the positioning surface 22b on the outer ring portion 22a of the fixture body 2 can abut against and be attached to the step surface 33 of the indexing toothed disc 3. At this time, the inner ring portion 21a and the expansion sleeve 4 both extend into the inner bore of the indexing toothed disc 3. The radial position of the indexing toothed disc 3 is roughly positioned by the limiting groove 23 and the inner ring portion 21a, and the axial position of the indexing toothed disc 3 is stably limited by the positioning surface 22b and the step surface 33, so that the indexing toothed disc 3 is stably limited before being clamped and positioned.

By the work of driving piece 1, draw bar 5 to the inner end direction axial displacement who wears to establish in anchor clamps body 2 hole through the pulling of piston rod 12, the portion 52 that supports of draw bar 5 outer end is used in the cover 4 that expands, drives the cover 4 that expands and removes along the leading face one 21b to the inner end direction to make the cover 4 that expands outwards take place elasticity along deformation groove 44 simultaneously and expand and paste and lean on the inner wall of graduation fluted disc 3, the tight graduation fluted disc 3 that expands realizes the location.

After the inclined plane at a position on the indexing toothed disc 3 is ground, the rotary shell 13 fixed on the frame body is kept still, the cylinder body and the fixture body are driven by the turntable to perform indexing rotation according to the indexing toothed disc groove, and the circumferential position of the indexing toothed disc 3 is adjusted so as to facilitate grinding of the next inclined plane until grinding of all the inclined planes is completed.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments, or alternatives may be employed, by those skilled in the art, without departing from the spirit or ambit of the invention as defined in the appended claims.

Claims

1. The utility model provides an indexing fluted disc grinding positioning mechanism, includes driving piece (1) and is annular anchor clamps body (2), its characterized in that, the tip of anchor clamps body (2) one end has that the coaxial line sets up all is annular interior ring portion (21a) and is located outer ring portion (22a) of interior ring portion (21a), form recessed being annular spacing groove (23) that are used for that indexing fluted disc (3) tip stretches into between interior ring portion (21a) and outer ring portion (22a), the terminal surface of outer ring portion (22a) is for being annular locating surface (22b), be provided with on interior ring portion (21a) and expand cover (4), driving piece (1) can drive pull rod (5) axial displacement that pass anchor clamps body (2) hole and make expand cover (4) outwards take place elastic deformation.

2. The indexing fluted disc grinding and positioning mechanism according to claim 1, wherein a first conical guide surface (21b) is arranged on the outer side of the outer end of the inner ring portion (21a), the diameter of the first conical guide surface (21b) is gradually increased from outside to inside, the expansion sleeve (4) is sleeved on the outer side of the inner ring portion (21a), a second guide surface (41) which is attached to the first guide surface (21b) is arranged on the inner side of the expansion sleeve (4), and the expansion sleeve (4) can be driven to move towards the bottom surface of the limiting groove (23) when the pull rod (5) moves axially.

3. The indexing fluted disc grinding and positioning mechanism according to claim 2, wherein the pull rod (5) is rod-shaped, the inner end of the pull rod is connected with the driving piece (1), the outer end of the pull rod penetrates out of the outer end face of the clamp body (2), a protruding annular blocking edge (51) is arranged on the outer side of the outer end of the pull rod (5), a protruding annular abutting part (52) is arranged on the position, corresponding to the first guide face (21b), of the inner end face of the blocking edge (51), and the abutting part (52) abuts against the outer end face of the expansion sleeve (4).

4. The indexing fluted disc grinding and positioning mechanism according to claim 2 or 3, wherein the inner side of the expansion sleeve (4) is provided with a protruding portion (42) protruding in a ring shape, the outer end surface of the inner ring portion (21a) is provided with a rod-shaped limiting rod (6) protruding axially, a limiting hole (43) is correspondingly formed in the protruding portion (42) along the axial direction, and the limiting rod (6) extends into the limiting hole (43).

5. The indexing toothed disc grinding and positioning mechanism according to claim 4, wherein the inner ring portion (21a) further has a recessed spring hole (21c) on an outer end surface thereof, a return spring (7) is disposed in the spring hole (21c), and a portion of the return spring (7) extends out of the spring hole (21c) and abuts against an inner end surface of the convex portion (42).

6. An indexing toothed disc grinding and positioning mechanism according to claim 1, 2 or 3, wherein the positioning surface (22b) is planar.

7. The indexing fluted disc grinding and positioning mechanism according to claim 1, 2 or 3, wherein the clamp body (2) comprises a positioning mandrel (21) and a back rest (22) sleeved outside the positioning mandrel (21), the inner ring part (21a) is positioned on the positioning mandrel (21), the outer ring part (22a) is positioned on the back rest (22), the inner end surface and the inner side surface of the back rest (22) are both attached to the positioning mandrel (21) and fixed by a fastener.

8. The indexing fluted disc grinding and positioning mechanism according to claim 1, 2 or 3, wherein the driving member (1) comprises a cylinder body (11), a piston rod (12) arranged in the cylinder body (11) and a rotating shell (13) sleeved outside the cylinder body (11), the clamp body (2) is fixedly connected with the cylinder body (11), the piston rod (12) is fixedly connected with the inner end of the pull rod (5), a bearing (8) is arranged between the rotating shell (13) and the cylinder body (11), and the rotating shell (13) can rotate circumferentially relative to the cylinder body (11).