CN218362524U

CN218362524U - Positioning device

Info

Publication number: CN218362524U
Application number: CN202222408657.4U
Authority: CN
Inventors: 丁井泉; 李友明; 曾林伟; 黄谋辉; 黄川川; 杜慧伦
Original assignee: Magna PT Powertrain Jiangxi Co Ltd
Current assignee: Magna PT Powertrain Jiangxi Co Ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2023-01-24
Anticipated expiration: 2032-09-09

Abstract

The utility model provides a positioner, this positioner include the position sleeve and with the positioning seat that the position sleeve is connected, offer on the position sleeve and be used for the holding to treat the groove of dodging of machined part one end, the position sleeve is close to positioning seat one end inwards sunken form with the constant head tank of positioning seat adaptation, seted up on the positioning seat with dodge the through-hole of groove intercommunication, keep away from in the through-hole position sleeve one side is equipped with the location inclined plane, the through-hole is used for supplying treat that the one end that the machined part need not process passes deeply dodge the inslot, and with the cooperation of location inclined plane is with it is fixed to treat the machined part. The utility model provides a positioner has solved among the prior art and has carried out gear honing to the elongated member and add man-hour, and current positioner carry out the position of pushing up tightly to the elongated member and the processing position be separated from and lead to adding the technical problem who influences the precision that gear honing processed that the elongated member can abnormal vibration further when being far away.

Description

Positioning device

Technical Field

The utility model relates to a machining technical field, in particular to positioner.

Background

The positioning device is a common auxiliary tool in the mechanical industry, has wide application in the technical field of metal processing equipment, is particularly suitable for processing shaft workpieces, and plays a key positioning role in the processing process of the shaft workpieces. When a gear shaft workpiece is subjected to finish machining after heating, a tooth surface honing process is generally adopted to clamp and position the workpiece in a clamping and jacking mode so as to ensure the machining precision of the workpiece.

In the prior art, the tightening manner of the positioning device usually adopts a tapered tip, and the tip is contacted with a central hole at one end of the workpiece, which is not required to be machined, so as to play roles in positioning the workpiece, bearing the weight of the workpiece and bearing the cutting force of a cutter on the workpiece.

However, when a slender workpiece is machined, a positioning mode of clamping and fixing two ends of the workpiece is adopted, namely, when the distance between the part of the workpiece needing to be machined and the end of the workpiece needing not to be machined (namely the part fixed by the positioning device) is relatively long, the supporting force of the tip is not enough to overcome the stress of the workpiece during machining, so that the workpiece can vibrate abnormally during machining, and the precision of gear honing machining is influenced.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a positioner, aim at solving among the prior art when honing the tooth to the elongated member, current positioner carries out the position of pushing up tightly to the elongated member and processing position apart from the technical problem who influences honing tooth machining precision because of easy abnormal vibration when leading to processing the elongated member far away.

The utility model provides a positioning device, including the position sleeve and with the positioning seat that the position sleeve is connected, offer on the position sleeve and be used for the holding to treat the groove of dodging of machined part one end, the position sleeve is close to positioning seat one end inwards sunken form with the constant head tank of positioning seat adaptation, set up on the positioning seat with dodge the through-hole of groove intercommunication, keep away from in the through-hole position sleeve one side is equipped with the location inclined plane, the through-hole is used for supplying treat that the one end that the machined part need not process passes deeply dodge the inslot, and with the cooperation of location inclined plane is in order to incite somebody to action treat that the machined part is fixed.

The positioning device comprises a positioning sleeve and a positioning seat arranged on the positioning sleeve, wherein the positioning sleeve is arranged on the positioning sleeve. When the workpiece to be machined is an elongated workpiece, an avoiding groove is formed in the positioning sleeve and used for containing the front end of the elongated workpiece, which does not need to be machined, one side, close to the positioning seat, of the avoiding groove is inwards recessed to form a positioning groove, and the positioning seat is fixed on the positioning sleeve through the positioning groove; when the positioning device is used, the positioning device is installed and fixed on a U shaft of a processing machine tool, the front end of the elongated piece, which does not need to be processed, extends into the positioning device, firstly passes through the through hole and then is placed into the avoiding groove, and when the positioning inclined plane tightly pushes the pushing part of the elongated piece, the elongated piece stops moving; because the jacking part is close to the processing part of the elongated part, enough supporting force can be provided for jacking and positioning the part to overcome the cutting force when the workpiece is processed, and further the vibration amplitude generated when the elongated part is processed is reduced, so that the gear honing precision of the elongated part is ensured. Therefore the utility model discloses in the technical scheme solution in the prior art to the elongated member when gear honing processing, current positioner carry on the elongated member push up tight position and processing position be separated from far away lead to processing the elongated member can abnormal vibration and then influence the technical problem of the precision of gear honing processing.

In addition, according to the utility model provides a positioner can also have following additional technical characteristics:

preferably, one side of the positioning seat, which is close to the positioning sleeve, is provided with a circle of flanging, and the positioning groove comprises a positioning end face matched with the end face of the flanging and a positioning excircle matched with the side face of the flanging.

Preferably, a screw hole is formed in the positioning end face, and a through hole matched with the screw hole is formed in the turned-over edge.

Preferably, the locating sleeve is cylindrical and is fixed at a preset installation position through a bearing.

Preferably, a plurality of the screw holes are evenly distributed along the circumferential direction of the axis of the positioning end face.

Preferably, the depth of the positioning groove is consistent with the thickness of the flanging.

Preferably, the positioning device further comprises a positioning pin, a pin hole matched with the positioning pin is formed in the positioning end face, and a positioning hole matched with the pin hole is formed in the flanging.

Preferably, the number of the pin holes is two, the pin holes are symmetrically distributed on the positioning end face, and the two positioning holes are matched with the two pin holes.

Drawings

Fig. 1 is a schematic structural diagram of a positioning device according to an embodiment of the present invention;

FIG. 2 is an exploded view of FIG. 1;

fig. 3 is a cross-sectional view of a positioning device according to an embodiment of the present invention;

fig. 4 is a schematic view of an assembly of a positioning device and an elongated member according to an embodiment of the present invention;

description of the main element symbols:

locating sleeve	10	Positioning seat	20
				Dodging groove	11	Locating slot	12
Through hole	21	Positioning inclined plane	22
				Flanging	23	Locating end face	121
Positioning outer circle	122	Screw nail	30
				Screw hole	123	Via hole	231
Bearing assembly	40	Locating pin	50
				Locating hole	124	Pin hole	232
Elongated article	60	Tightening part	61
				Processing part	62

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.

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

Referring to fig. 1 to 4, a positioning device according to an embodiment of the present invention is shown, which includes a positioning sleeve 10 and a positioning seat 20 connected to the positioning sleeve 10, wherein:

offer on the position sleeve 10 and be used for the holding to treat dodging groove 11 of machined part one end, the position sleeve 10 is close to the positioning seat 20 one end and inwards caves in the constant head tank 12 that forms and positioning seat 20 adaptation, set up on the positioning seat 20 with dodge the through-hole 21 of groove 11 intercommunication, keep away from position sleeve 10 one side in the through-hole 21 and be equipped with location inclined plane 22, the through-hole 21 is used for supplying the above-mentioned one end of treating that the machined part need not be processed to pass and deeply dodge in the groove 11, and with location inclined plane 22 cooperation in order to treat the machined part with the above-mentioned fixed.

It can be understood that the locating sleeve 10 and the locating seat 20 disposed on the locating sleeve 10 constitute a main structure of the locating device. When the workpiece to be processed is an elongated piece 60, an avoiding groove 11 is formed in the positioning sleeve 10 and used for accommodating the front end, which does not need to be processed, of the elongated piece 60, one side, close to the positioning seat 20, of the avoiding groove 11 is inwards recessed to form a positioning groove 12, and the positioning seat 20 is fixed on the positioning sleeve 10 through the positioning groove 12; a through hole 21 penetrating through the positioning seat 20 is formed in the middle of the positioning seat 20, the through hole 21 is used for avoiding the front end, which does not need to be processed, of the elongated piece 60, and a positioning inclined plane 22 matched with the tightening part 61 of the elongated piece 60 is arranged on one side, away from the positioning seat 20, of the through hole 21; because the abutting part 61 is close to the processing part 62 of the elongated piece 60, enough supporting force can be provided for abutting positioning at the position to overcome the cutting force during processing, and the vibration amplitude generated during processing the elongated piece 60 is further reduced, so that the gear honing precision of the elongated piece 60 is ensured. Therefore the utility model discloses technical scheme has solved among the prior art and has carried out gear honing to elongated member 60 and add man-hour, and current positioner carries out the tight position in top and the processing position to elongated member 60 and is separated from far away to lead to adding the technical problem that elongated member 60 can the abnormal vibration and then influence gear honing machining precision when adding man-hour.

It should be noted that the end of the workpiece to be machined, which is not required to be machined, is the end with a smaller diameter away from the machining portion 62 of the workpiece to be machined; specifically, when the member to be processed is the elongated member 60, the end not to be processed is the end placed in the avoidance groove 11 shown in fig. 4. The positions of this additional working portion 62 and the clinch portion 61 are both shown in fig. 4.

In addition to the advantage that the positioning device is positioned closer to the processing portion 62 of the elongated member 60 than the conventional positioning device, the tapered positioning has a larger area for positioning and fixing than the former center positioning, and the portion of the elongated member 60 fixed by the positioning device is larger, so that the processing rigidity of the elongated member 60 is increased, and the elongated member 60 is not broken due to insufficient rigidity of the fixing portion when the elongated member 60 is processed.

Specifically, one side of the positioning seat 20 close to the positioning sleeve 10 is provided with a turn of flange 23, and the positioning groove 12 includes a positioning end face 121 adapted to the end face of the flange 23 and a positioning outer circle 122 adapted to the side face of the flange 23. Through the cooperation of the locating end face 121 and the end face of the turned-over edge 23, and the cooperation of the locating excircle 122 and the side face of the turned-over edge 23, the axis of the elongated piece 60 is consistent with that of the locating seat 20, in order to ensure the locating precision, the axis and the hole are in extremely small clearance fit through matched grinding, so that the turned-over edge and the locating groove can realize the locating action and can be conveniently installed, and the installing precision between the locating seat 20 and the locating sleeve 10 is ensured.

Further, the positioning device further comprises a positioning pin 50, a positioning hole 124 matched with the positioning pin 50 is formed in the positioning end surface 121, and a pin hole 232 matched with the positioning hole 124 is formed in the flange 23. Because the hole shaft matching between the positioning excircle 122 and the side face of the turned-over edge 23 needs to ensure the processing precision of the positioning excircle 122 and the side face of the turned-over edge 23, the processing requirement is very high, the matching diameter of the hole shaft is large, and the matching precision is difficult to adjust. Therefore, the positioning pin 50, the positioning hole 124 and the pin hole 232 are added for replacement, so that parts needing to be guaranteed in accuracy are reduced, namely, only the accuracy of the hole needs to be guaranteed, the positioning pin 50 is provided with standard parts, and the area needing to be finished is smaller. In addition, although the positioning of the positioning pin 50 and the positioning hole 124 is adopted, the positioning of the positioning excircle 122 and the side face of the flanging 23 is replaced; however, the positioning outer circle 122 and the side surface of the flange 23 can also be preassembled for installation by a worker.

Furthermore, two positioning holes 124 are symmetrically distributed on the positioning end surface 121, and the two pin holes 232 are matched with the two positioning holes 124. Positioning of a part is generally more accurate by using three positioning pins 50, but the positioning device has positioning matching between the positioning end face 121 and the end face of the flange 23, so that only two degrees of freedom of translation and rotation of the positioning seat 20 are left to be limited, and therefore, the positioning requirement between the positioning seat 20 and the positioning sleeve 10 can be met only by additionally arranging two positioning holes 124, pin holes 232 and the positioning pins 50; in addition, the positioning holes 124 are symmetrically distributed because the farther the position distance between the two positioning points is, the less the influence of the fit clearance between the positioning pin 50 and the hole on the assembly precision of the part is.

In addition, the positioning device further comprises a screw 30, a screw hole 123 matched with the screw 30 is formed in the positioning end face 121, and a through hole 231 matched with the screw hole 123 is formed in the flanging 23. The positioning sleeve 10 and the positioning seat 20 are fixed by a screw 30; the positioning mode is convenient to disassemble. In addition, the screw 30 should be long enough to ensure that at least two thirds of the screw 30 can extend into the screw hole 123. The depth of the screw hole 123 should be deep enough to ensure that the screw 30 can be tightened.

Furthermore, a plurality of screw holes 123 are uniformly distributed along the axial direction of the positioning end face 121, a plurality of through holes 231 are matched with the screw holes 123, and a plurality of screws 30 penetrate through the through holes 231 and are embedded into the screw holes 123 to fix the positioning sleeve 10 on the positioning seat 20. Preferably, the screw holes 123 are four and circumferentially distributed along the positioning end face 121, so that the connection strength between the positioning sleeve 10 and the positioning seat 20 can be effectively ensured, and the turned-over edge 23 is uniformly stressed.

By way of example and not limitation, in some alternative embodiments, the locating sleeve 10 is cylindrical, and the locating sleeve 10 is fixed at a preset mounting position by the bearing 40. The locating sleeve 10 is fixed on the U shaft of the processing machine through a bearing 40.

In addition, the depth of the positioning groove 12 corresponds to the thickness of the flange 23. The arrangement is to ensure that when the positioning seat 20 is mounted on the positioning sleeve 10, whether the positioning seat 20 and the positioning sleeve 10 are assembled can be intuitively judged by whether the flanging 23 is flush with the end face of the positioning sleeve 10.

To sum up, the positioning device in the middle of the above embodiment of the present invention constitutes the main structure of the positioning device through the positioning sleeve 10 and the positioning seat 20 disposed on the positioning sleeve 10. When the workpiece to be machined is an elongated piece 60, an avoiding groove 11 is formed in the positioning sleeve 10 and used for accommodating the front end of the elongated piece 60 which does not need to be machined, one side, close to the positioning seat 20, of the avoiding groove 11 is inwards recessed to form a positioning groove 12, and the positioning seat 20 is fixed on the positioning sleeve 10 through the positioning groove 12; a through hole 21 penetrating through the positioning seat 20 is formed in the middle of the positioning seat 20, the through hole 21 is used for avoiding the front end of the elongated piece 60 which does not need to be processed, a positioning inclined plane 22 matched with the abutting part 61 of the elongated piece 60 is arranged on one side, away from the positioning seat 20, of the through hole 21, when the positioning device is used, the positioning device is installed and fixed on a U shaft of a processing machine tool, the front end of the elongated piece 60 which does not need to be processed extends into the positioning device and is placed into the avoiding groove 11 after passing through the through hole 21, and when the positioning inclined plane 22 abuts against the abutting part 61 of the elongated piece 60, the elongated piece 60 stops moving; because the abutting part 61 is close to the processing part 62 of the elongated piece 60, enough supporting force can be provided for abutting positioning at the position to overcome the cutting force during processing, and the vibration amplitude generated during processing the elongated piece 60 is further reduced, so that the gear honing precision of the elongated piece 60 is ensured. Consequently the utility model discloses technical scheme has solved among the prior art and has carried out gear honing to elongate member 60 and add man-hour, and current positioner carries out the tight position in top and processing position to elongate member 60 and is separated from to lead to adding the technical problem that the elongate member 60 can abnormal vibration and then influence gear honing machining precision far away in man-hour.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above-mentioned embodiments only represent several embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a positioner, its characterized in that, including the position sleeve and with the positioning seat that the position sleeve is connected, offer the groove of dodging that is used for the holding to treat machined part one end on the position sleeve, the position sleeve is close to positioning seat one end inwards sunken form with the constant head tank of positioning seat adaptation, set up on the positioning seat with dodge the through-hole of groove intercommunication, keep away from in the through-hole position sleeve one side is equipped with the location inclined plane, the through-hole is used for supplying treat that the machined part does not need the one end of processing to pass deeply dodge the inslot, and with the cooperation of location inclined plane is in order to incite somebody to action it is fixed to treat the machined part.

2. The positioning device according to claim 1, wherein a turn of flange is provided on one side of the positioning seat close to the positioning sleeve, and the positioning groove comprises a positioning end face matched with the end face of the flange and a positioning outer circle matched with the side face of the flange.

3. The positioning device according to claim 2, wherein a screw hole is formed in the positioning end face, and a through hole matched with the screw hole is formed in the flanging.

4. The positioning device of claim 1, wherein the positioning sleeve is cylindrical and is fixed at a predetermined mounting position by a bearing.

5. The positioning device as set forth in claim 3 wherein said plurality of threaded bores are evenly circumferentially distributed along an axis of said positioning end surface.

6. The positioning device of claim 2 wherein the depth of the positioning slot corresponds to the thickness of the flange.

7. The positioning device according to claim 2, further comprising a positioning pin, wherein a pin hole matched with the positioning pin is formed in the positioning end face, and a positioning hole matched with the pin hole is formed in the flanging.

8. The positioning device as set forth in claim 7, wherein said two pin holes are symmetrically distributed on said positioning end surface, and said two positioning holes are adapted to said two pin holes.