CN217317085U

CN217317085U - Positioning device

Info

Publication number: CN217317085U
Application number: CN202220455971.5U
Authority: CN
Inventors: 胡旭东; 余修猛; 苏建; 段君潇
Original assignee: Fuxiang Precision Industrial Kunshan Co Ltd
Current assignee: Fuxiang Precision Industrial Kunshan Co Ltd
Priority date: 2022-02-28
Filing date: 2022-02-28
Publication date: 2022-08-30
Anticipated expiration: 2032-02-28

Abstract

The application discloses a positioning device, which is used for positioning a knife handle, and comprises a pulling assembly and a positioning assembly, wherein the positioning assembly comprises a connecting part, a positioning shaft sleeve and a positioning main body, the connecting part is used for connecting a main shaft of an external machine tool, the connecting part is provided with a plurality of first through holes along the circumferential direction, a ball is arranged in each first through hole, the positioning shaft sleeve is provided with a through groove, the connecting part is arranged in the through groove, the inner wall of the through groove is provided with an arc-shaped groove, the arc-shaped groove extends along the axial direction of the positioning shaft sleeve, the ball is arranged in the arc-shaped groove, the positioning main body sleeve is arranged on the positioning shaft sleeve and is used for installing the knife handle, the pulling assembly is connected to the connecting part in a sliding manner, one end of the pulling assembly is used for connecting the knife handle, the other end of the pulling assembly is in contact with the connecting ball, the positioning shaft sleeve rotates relative to the connecting part to drive the ball to extrude the ball, and drive the pulling assembly to move relative to the connecting part, to tension the shank. The positioning device can improve the positioning precision and the processing precision and yield of the tool shank.

Description

Positioning device

Technical Field

The application relates to the field of cutter machining, in particular to a positioning device.

Background

When a cutter is machined, the cutter handle needs to be fixed, then the inner hole or the inner cone of the head of the cutter handle is machined, the cutter handle is usually connected with a main shaft of external equipment, the cutter is driven to rotate through the external equipment so as to be machined, but the cutter handle is directly fixed on the main shaft of the external equipment, so that the problems of eccentricity of the cutter handle and jumping of the head of the cutter handle exist during machining, and machining precision is affected.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is desirable to provide a positioning device, which can improve the positioning accuracy.

The embodiment of the application provides a positioning device for positioning a knife handle, which comprises a pulling assembly and a positioning assembly, wherein the positioning assembly comprises a connecting part, a positioning shaft sleeve and a positioning main body, the connecting part is used for connecting a main shaft of an external machine tool, the connecting part is provided with a plurality of first through holes along the circumferential direction, each first through hole is internally provided with a ball, the positioning shaft sleeve is provided with a through groove, the connecting part is arranged in the through groove, the inner wall of the through groove is provided with an arc-shaped groove, the arc-shaped groove extends along the axial direction of the positioning shaft sleeve, the balls are arranged in the arc-shaped grooves, the positioning main body is sleeved on the positioning shaft sleeve and used for installing the knife handle, the pulling assembly is connected with the connecting part in a sliding manner, one end of the pulling assembly is used for connecting the knife handle, the other end of the pulling assembly is in contact with the balls, the positioning shaft sleeve rotates relative to the connecting part, the ball rotates and is separated from the arc-shaped groove, the inner wall of the through groove is driven to extrude the ball, and the ball drives the pulling and holding assembly to move relative to the connecting portion so as to tighten the tool handle.

The embodiment of the application comprises the following technical effects: the positioning device rotates through the relative connecting portion of the positioning shaft sleeve by arranging the connecting portion, the positioning shaft sleeve and the positioning main body, the ball rotates and is separated from the arc-shaped groove, the ball is extruded by the inner wall of the through groove, the ball drives the relative connecting portion of the pulling assembly to move, the positioning precision can be improved by tensioning the cutter handle, and the machining precision and yield of the cutter handle are improved.

Optionally, in some embodiments of the present application, the pulling and holding assembly includes a pull rod and a ring sleeve, one end of the pull rod is used for connecting the handle, the ring sleeve is disposed at the other end of the pull rod, and the ring sleeve has an inclined surface, and the inclined surface is in contact with the ball.

Optionally, in some embodiments of the present application, the pulling and holding assembly further includes a connecting member and a fixing member, the connecting member is connected to the loop, the fixing member passes through the connecting member and is fixed to the pull rod, and the loop is movable relative to the pull rod.

Optionally, in some embodiments of the present application, the connector includes a first end and a second end, the first end having an outer diameter greater than an outer diameter of the second end, the first end contacting the collar and the second end contacting the fastener.

Optionally, in some embodiments of the present application, the positioning device further includes a detaching assembly, the detaching assembly includes a detaching member, the detaching member includes a first portion and a second portion connected to the first portion, an outer diameter of the second portion is greater than an outer diameter of the first portion, the second portion and the first portion are eccentrically disposed, and the detaching member is rotatably connected to the positioning body to drive the second portion to push the tool handle.

Optionally, in some embodiments of the present application, the disassembling assembly further includes a limiting member, and the limiting member is connected to the positioning main body and the disassembling member, so as to limit the disassembling member to move along its own axis direction.

Optionally, in some embodiments of the present application, the connecting portion includes a first member and a second member connecting the first member, the first member and the second member are coaxially disposed, the first member is connected to a spindle of an external machine tool, and the second member is connected to the positioning sleeve.

Optionally, in some embodiments of the present application, the connecting portion has a connecting groove penetrating through the first member and the second member, and the pulling member is slidably disposed in the connecting groove.

Optionally, in some embodiments of this application, draw and hold the subassembly and still include the dwang, the location main part is equipped with the opening, the opening is followed the circumferencial direction setting of location main part, the dwang is located the opening is connected the location axle sleeve, the dwang is in remove in the opening, and drive the location axle sleeve rotates.

Optionally, in some embodiments of the present application, a sealing groove is formed in an outer periphery of the positioning shaft sleeve, a sealing element is disposed in the sealing groove, and the sealing element is in contact connection with the positioning main body.

Drawings

Fig. 1 illustrates a schematic structural diagram of a positioning device in an embodiment.

FIG. 2 illustrates an exploded view of the positioning device in one embodiment.

Fig. 3 illustrates a cross-sectional view of a positioning device in one embodiment.

Fig. 4 illustrates a schematic structural diagram of a positioning sleeve in an embodiment.

Figure 5 illustrates a structural schematic of the stripper member in one embodiment.

Fig. 6 illustrates an exploded view of a pull cup assembly in one embodiment.

Description of the main elements

Positioning device 100

Positioning assembly 20

Connecting part 21

First member 211

Second part 212

First via 212a

Ball 2121

Connecting groove 213

Locating bush 22

Through groove 221

Arc-shaped groove 221a

Seal groove 222

Seal 223

Positioning body 23

First groove 231

Second groove 232

Opening 233

Second via 234

Third via hole 235

Detachment assembly 30

The stripper 31

First portion 311

Second portion 312

Position limiting member 32

Pulling assembly 40

Rotating rod 40a

Pull rod 41

First lever 411

Second rod 412

Step part 41a

Ring sleeve 42

Inclined surface 421

Connecting piece 43

First end 431

Second end 432

Fixing member 44

Knife handle 200

The following specific examples will further illustrate the application in conjunction with the above figures.

Detailed Description

The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

The embodiment of the application provides a positioning device, which is used for positioning a knife handle and comprises a pulling assembly and a positioning assembly, wherein the positioning assembly comprises a connecting part, a positioning shaft sleeve and a positioning main body, the connecting part is used for connecting a main shaft of an external machine tool, the connecting part is provided with a plurality of first through holes along the circumferential direction, a ball is arranged in each first through hole, the positioning shaft sleeve is provided with a through groove, the connecting part is arranged in the through groove, the inner wall of the through groove is provided with an arc-shaped groove, the arc-shaped groove extends along the axial direction of the positioning shaft sleeve, the ball is arranged in the arc-shaped groove, the positioning main body is sleeved on the positioning shaft sleeve and used for installing the knife handle, the pulling assembly is connected to the connecting part in a sliding manner, one end of the pulling assembly is used for connecting the knife handle, the other end of the pulling assembly is in contact with the ball, the positioning shaft sleeve rotates relative to the connecting part to enable the ball to rotate and separate from the arc-shaped groove, the inner wall of the through groove is driven to extrude the ball, and the pulling assembly to move relative to the connecting part, to tension the shank.

The positioning device rotates through the relative connecting portion of the positioning shaft sleeve by arranging the connecting portion, the positioning shaft sleeve and the positioning main body, the ball rotates and is separated from the arc-shaped groove, the ball is extruded by the inner wall of the through groove, the ball drives the relative connecting portion of the pulling assembly to move, the positioning precision can be improved by tensioning the cutter handle, and the machining precision and yield of the cutter handle are improved.

Some embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, the positioning device 100 is used for positioning the tool shank 200. The positioning device 100 includes a positioning assembly 20 and a pulling assembly 40. One end of the positioning assembly 20 is connected with a spindle of an external machine tool, the other end of the positioning assembly is used for installing the tool shank 200, and the pulling and holding assembly 40 is arranged in the positioning assembly 20 and connected with the tool shank 200 and used for tensioning the tool shank 200 to enable the tool shank to be positioned in the positioning assembly 20.

The positioning assembly 20 includes a connecting portion 21, a positioning boss 22, and a positioning body 23. One end of the connecting part 21 is connected with a main shaft of an external machine tool, and the other end is connected with a positioning shaft sleeve 22. The positioning main body 23 is connected with the positioning sleeve 22 and the connecting part 21 for installing the tool holder 200.

The connecting portion 21 includes a first member 211 and a second member 212 connecting the first member 211, and the first member 211 is coaxially disposed with the second member 212. The first part 211 is connected to the spindle of an external machine tool and the second part 212 is connected to the positioning sleeve 22. The connecting portion 21 has a connecting groove 213 penetrating the first member 211 and the second member 212, and the pulling member 40 is slidably disposed in the connecting groove 213. Alternatively, the axis of the connecting groove 213 is collinear with the axis of the connecting portion 21.

The second member 212 is provided with a plurality of first through holes 212a in its circumferential direction, the first through holes 212a communicating with the coupling groove 213. The plurality of first through holes 212a are spaced apart from each other, and a ball 2121 is disposed in each first through hole 212 a. The ball 2121 protrudes from the first through hole 212a, and the ball 2121 partially extends into the connecting groove 213 and contacts the connecting pulling member 40. The ball 2121 also partially protrudes from the surface of the second member 212 and is in contact with the inner wall of the positioning boss 22.

Referring to fig. 3 and 4, the positioning sleeve 22 has a through slot 221, and the second member 212 is disposed in the through slot 221. The through groove 221 is substantially cylindrical, an arc-shaped groove 221a is formed in the inner wall of the through groove 221, and the arc-shaped groove 221a extends in the axial direction of the positioning boss 22 and is arranged in the circumferential direction of the through groove 221. The arc-shaped groove 221a is used for accommodating the ball 2121, when the ball 2121 is located in the arc-shaped groove 221a, the pulling assembly 40 is in a state of releasing the tool holder 200, and when the positioning sleeve 22 rotates relative to the second part 212, the ball 2121 is driven to rotate together, so that the ball 2121 is separated from the arc-shaped groove 221a and contacts with the inner wall of the through groove 221, the inner wall of the through groove 221 presses the ball 2121, the ball 2121 drives the pulling assembly 40 to move in the connecting groove 213, and the tool holder 200 is tensioned. Optionally, the number of the arc-shaped grooves 221a is the same as that of the balls 2121, and the plurality of arc-shaped grooves 221a are uniformly spaced along the inner wall of the through groove 221.

In one embodiment, the positioning sleeve 22 has a sealing groove 222 formed on the outer circumference thereof, and a sealing member 223 is disposed in the sealing groove 222. When the positioning main body 23 is sleeved on the positioning sleeve 22, the sealing member 223 contacts and is connected with the positioning main body 23.

In one embodiment, the positioning body 23 is provided with a first groove 231 and a second groove 232 which are communicated with each other, the positioning sleeve 22 is provided in the first groove 231, and the second groove 232 is used for installing the tool holder 200. Optionally, the first groove 231 is disposed in a cylindrical shape, and the second groove 232 is disposed in a substantially circular triangle shape, so as to prevent the tool holder from rotating relative to the positioning body 23. The positioning body 23 is further provided with an opening 233 communicating with the first groove 231, the opening 233 being provided in the circumferential direction of the positioning body. The pulling assembly 40 includes a rotating rod 40a, the rotating rod 40a is connected to the positioning sleeve 22 through the opening 233, and the positioning sleeve 22 is rotated by the rotating rod 40 a.

Referring to fig. 3 and 5, in an embodiment, the positioning apparatus 100 further includes a detaching assembly 30, the positioning body 23 is provided with a second through hole 234 and a third through hole 235, and the detaching assembly 30 is disposed in the second through hole 234 and the third through hole 235. The dismounting assembly 30 includes a dismounting member 31, the dismounting member 31 is disposed in the second through hole 234, and the dismounting member 31 pushes the tool holder 200 by rotating the dismounting member 31. Optionally, the dismounting member 31 comprises a first portion 311 and a second portion 312 connected to the first portion 311, the outer diameter of the second portion 312 is larger than that of the first portion 311, the second portion 312 is eccentrically disposed with respect to the first portion 311, and partial surfaces of the first portion 311 and the second portion 312 are coplanar. The taper of the tool holder 200 after interference fit has a strong self-locking function, so that materials cannot be normally taken, and the dismounting member 31 is arranged, so that the structure that the second part 312 protrudes out of the first part 311 pushes the tool holder 200 to facilitate dismounting the tool holder 200 from the positioning main body 23.

The disassembling component 30 further includes a limiting member 32, the limiting member 32 is disposed in the third through hole 235, and the limiting member 32 is pressed on the surface of the disassembling component 31, so that the disassembling component 31 rotates around its own axis and cannot move along its own axis direction.

Referring to fig. 3 and 6, in an embodiment, the pulling assembly 40 includes a pulling rod 41 and a ring 42, one end of the pulling rod 41 is used for connecting the tool holder 200, and the other end is connected to the ring 42. Optionally, the pull rod 41 is disposed in the handle 200 and is in threaded connection with the handle 200, and the ring sleeve 42 is sleeved on the pull rod 41. The pull rod 41 and the ring 42 are disposed in the connecting groove 213, and the ring 42 is connected to the inner wall of the connecting groove 213.

In an embodiment, the pull rod 41 includes a first rod 411 and a second rod 412 integrally disposed, a radius of the first rod 411 is smaller than a radius of the second rod 412, a step 41a is formed at a connection portion of the first rod 411 and the second rod 412, and one end of the ring sleeve 42 abuts against the step 41a to limit a position of the ring sleeve 42. An inclined surface 421 is formed on the ring 42 in a circumferential direction of an end thereof adjacent to the second rod 412, and the inclined surface 421 contacts the coupling ball 2121.

In one embodiment, the pulling assembly 40 further includes a connecting member 43 and a fixing member 44. The connecting member 43 is connected to the ring 42, and the fixing member 44 passes through the connecting member 43 and is fixed to the pull rod 41, so that the ring 42 can move relative to the pull rod 41. Optionally, the movement range L of the ring sleeve 42 relative to the pull rod 41 is satisfied, where L is greater than 0 and less than or equal to 0.5mm, and the movement range may be any one of 0.1mm, 0.2mm, 0.3mm, 0.4mm, and 0.5 mm. The ring sleeve 42 is arranged to move relative to the pull rod 41, and the movement of the ring sleeve 42 is utilized to offset the eccentricity generated when the ball 2121 drives the pull rod 41 to tighten the knife handle 200, so that the knife handle 200 is prevented from being pulled askew, and the positioning precision is prevented from being influenced.

In one embodiment, connecting member 43 includes a first end 431 and a second end 432, the first end 431 having an outer diameter greater than an outer diameter of the second end 432, the first end 431 contacting the connection collar 42 and the second end 432 contacting the connection fastener 44. The fitting of the coupling member 43 into the coupling groove 213 is facilitated by setting the outer diameter of the second end 432 to be smaller than the outer diameter of the first end 431. Optionally, the connecting member 43 is in a circular truncated cone structure.

When the positioning device 100 is used, the pulling assembly 40 is firstly taken out, then one end of the pull rod 41 is in threaded connection with the tool holder 200, then the pulling assembly 40 is installed in the connecting portion 21 and the positioning main body 23, the tool holder 200 is installed in the second groove 232, then by snapping the rotating rod 40a, the rotating rod 40a drives the positioning shaft sleeve 22 to rotate relative to the connecting portion 21, the positioning shaft sleeve 22 drives the balls 2121 to rotate together, so that the balls 2121 are separated from the arc-shaped groove 221a and are in contact with the inner wall of the through groove 221, the inner wall of the through groove 221 presses the balls 2121, drives the balls 2121 to press the inclined surface 421, further drives the pull rod 41 and the tool holder 200 to move towards the connecting portion 21, so as to tension the tool holder 200 in the positioning main body 23, then the rotating rod 40a is taken away, the tool holder is machined, after the machining is completed, the rotating rod 40a is snapped in the opposite direction, the rotating rod 40a drives the positioning shaft sleeve 22 to rotate relative to the connecting portion 21, the positioning sleeve 22 drives the balls 2121 to rotate together, so that the balls 2121 enter the arc-shaped grooves 221a, the pull rod 41 sends the tool holder 200 away, the dismounting member 31 is rotated, the whole pulling assembly 40 and the tool holder 200 are dismounted from the positioning main body 23, and then the next round of processing is performed.

Above-mentioned positioner 100 is through setting up connecting portion 21, location axle sleeve 22 and location main part 23, rotates through location axle sleeve 22 relative connecting portion 21, makes ball 2121 rotate and break away from arc groove 221a, and the inner wall extrusion ball 2121 of logical groove 221 makes ball 2121 drive and draws holding subassembly 40 relative connecting portion 21 to remove to taut handle of a knife 200, can promote positioning accuracy, and promote the machining precision and the yield of handle of a knife 200.

It should be understood by those skilled in the art that the above embodiments are only for illustrating the present application and are not to be taken as limiting the present application, and that suitable changes and modifications to the above embodiments are within the scope of the present disclosure as long as they are within the spirit and scope of the present application.

Claims

1. The utility model provides a positioner for location handle of a knife, its characterized in that includes:

a pull-hold assembly; and

the positioning assembly comprises a connecting part, a positioning shaft sleeve and a positioning main body, wherein the connecting part is used for connecting a main shaft of an external machine tool, the connecting part is provided with a plurality of first through holes along the circumferential direction of the connecting part, a ball is arranged in each first through hole, the positioning shaft sleeve is provided with a through groove, the connecting part is arranged in the through groove, the inner wall of the through groove is provided with an arc-shaped groove, the arc-shaped groove extends along the axial direction of the positioning shaft sleeve, the ball is arranged in the arc-shaped groove, the positioning main body is sleeved on the positioning shaft sleeve and used for installing the tool handle, the pulling assembly is connected to the connecting part in a sliding manner, one end of the pulling assembly is used for connecting the tool handle, and the other end of the pulling assembly is in contact connection with the ball;

the positioning shaft sleeve rotates relative to the connecting part, so that the ball rotates and is separated from the arc-shaped groove, the inner wall of the through groove is driven to extrude the ball, and the ball drives the pulling and holding assembly to move relative to the connecting part so as to tighten the tool handle.

2. The positioning device according to claim 1, wherein the pull-holding assembly comprises a pull rod and a ring, one end of the pull rod is connected to the handle, the ring is sleeved on the other end of the pull rod, and the ring has an inclined surface which is in contact with the ball.

3. The positioning device of claim 2, wherein said pulling assembly further comprises a connector member coupled to said collar and a fastener member extending through said connector member and secured to said pull rod, said collar being movable relative to said pull rod.

4. The positioning device of claim 3 wherein said connector includes a first end and a second end, said first end having an outer diameter greater than an outer diameter of said second end, said first end being in contact with said collar and said second end being in contact with said fastener.

5. The positioning device as set forth in claim 1, further comprising a dismounting assembly, wherein the dismounting assembly comprises a dismounting member, the dismounting member comprises a first portion and a second portion connected with the first portion, the outer diameter of the second portion is larger than that of the first portion, the second portion is eccentrically arranged with the first portion, and the dismounting member is rotatably connected with the positioning body to drive the second portion to push the tool shank.

6. The positioning apparatus as set forth in claim 5, wherein the disassembling unit further comprises a stopper connected to the positioning body and to the disassembling member for restricting the disassembling member from moving along its own axis.

7. The positioning apparatus of claim 1, wherein said connecting portion includes a first member and a second member connecting said first member, said first member being coaxially disposed with said second member, said first member being connected to a spindle of an external machine tool, said second member being connected to said positioning boss.

8. The positioning device as set forth in claim 7 wherein said connecting portion has an attachment slot extending through said first member and said second member, said pull cup assembly being slidably disposed within said attachment slot.

9. The positioning device according to claim 1, wherein the pulling assembly further comprises a rotating rod, the positioning body is provided with an opening, the opening is arranged along a circumferential direction of the positioning body, the rotating rod is arranged in the opening and connected to the positioning sleeve, and the rotating rod moves in the opening and drives the positioning sleeve to rotate.

10. The positioning device according to claim 1, wherein a sealing groove is formed in the periphery of the positioning sleeve, and a sealing member is arranged in the sealing groove and is in contact connection with the positioning body.