CN211101965U

CN211101965U - Disc gear shaping clamp

Info

Publication number: CN211101965U
Application number: CN201921636300.3U
Authority: CN
Inventors: 戴朝军; 丁辉
Original assignee: Jiangsu World Agricultural Machinery Co Ltd
Current assignee: Jiangsu World Agricultural Machinery Co Ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-07-28
Anticipated expiration: 2029-09-29

Abstract

The utility model provides a dish type gear shaping anchor clamps, this anchor clamps pass through the anchor clamps seat to be fixed at gear shaping lathe workstation, include: the taper mandrel is fixedly connected with the clamp seat, and the positioning disc and the double-taper-surface spring expansion sleeve are sleeved with the taper mandrel; the lower end face of the positioning plate is attached to the taper mandrel; the double-conical-surface spring expansion sleeve can slide in the conical mandrel and is provided with a plurality of high polymer elastomers; the taper pull rod is arranged on the taper mandrel and is installed in a matched mode with the double-taper-surface spring expansion sleeve; the utility model discloses both can guarantee the axial runout of gear location, can guarantee the runout of gear location again, rise the cover through the biconical face spring and fix a position the tooth base inner wall, positioning accuracy is high, can be fine prevent off-centre. Meanwhile, the tooth blank is convenient to assemble and disassemble; but also ensures the processing quality and efficiency of the spline.

Description

Disc gear shaping clamp

Technical Field

The utility model relates to the technical field of machining, especially, relate to a dish type gear shaping anchor clamps.

Background

To the utility model discloses in the gear shaping processing of the dish class gear combination tooth that relates to, require that its combination tooth ring gear runout is not more than 0.03 mm. For the processing method of the combined tooth spline of the gear, a cylindrical positioning mandrel is generally adopted for positioning in the prior art, and the lower pull rod is used for clamping. The disadvantages of this approach are: the cylindrical positioning core shaft is fixed in size and can be worn after long-term use, so that the gap is difficult to control; the positioning precision is not high, the eccentric condition is easy to occur, and the positioning of the inner wall of the gear cannot be accurately controlled; the jumping of the machined spline cannot be guaranteed, and the process yield of the product is very low. The technology disclosed at present also adopts a positioning and clamping mechanism with double conical surfaces, but the structure has the problems of low positioning precision and inaccurate positioning after the contact surface is worn, so that the structure needs to be improved, the loophole in the prior art is avoided, and the aim of seamless accurate positioning is fulfilled.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an overcome above-mentioned problem or solve a kind of disc gear shaping anchor clamps of above-mentioned problem partially at least to solve traditional cylinder positioning accuracy not high, the wearing and tearing clearance can not obtain the supplementary problem on the size.

In order to achieve the above object, the technical solution of the present invention is specifically realized as follows:

The utility model provides a disc gear shaping anchor clamps, this anchor clamps pass through the anchor clamps seat to be fixed at gear shaping lathe workstation, include:

The taper mandrel is fixedly connected with the clamp seat, and the positioning disc and the double-taper-surface spring expansion sleeve are sleeved with the taper mandrel;

The lower end face of the positioning plate is attached to the taper mandrel;

The double-conical-surface spring expansion sleeve can slide in the conical mandrel and is provided with a plurality of high polymer elastomers;

The taper pull rod is arranged on the taper mandrel and is installed in a matched mode with the double-taper-surface spring expansion sleeve;

The high polymer elastomer is used for expanding and resetting the double-conical-surface spring expanding sleeve.

As a further scheme of the utility model, tapering dabber axial is equipped with the dabber boss that is used for cooperating the installation of anchor clamps seat and is used for cooperating the dabber conical surface that the double-conical spring cover installation that rises, the tapering dabber radially is equipped with the disc that is used for the location.

As a further aspect of the present invention, the disc is radially provided with spline bolt holes, and the disc is axially provided with mandrel bolt holes.

As a further scheme of the utility model, the central line of dabber bolt hole is parallel with the central line of tapering dabber, and the distance of dabber bolt hole and tapering dabber is greater than the radius of dabber boss.

As a further proposal of the utility model, the terminal surface is locating surface and locating surface under the locating plate on the locating plate about the locating plate, all be equipped with the logical groove of quartering on locating surface and the locating plate under the locating plate on the locating plate.

As a further aspect of the present invention, the double-conical spring expansion sleeve is provided with two sections of conical surfaces in the axial direction, the conical surfaces are provided with four grooves and four grooves in the axial direction, and the four grooves are used for filling the polymer elastomer.

As a further proposal of the utility model, the conical surfaces are symmetrical on the radial central line of the double-conical-surface spring expansion sleeve, and the large diameter of the taper is arranged on the end surface, and the two conical surfaces are respectively matched with the taper mandrel and the taper pull rod.

As a further scheme of the utility model, the tapering pull rod be equipped with the biconical face spring cover complex of rising go up the conical surface, the tapering pull rod be equipped with tapering dabber complex stop the face of revolving, tapering pull rod afterbody is equipped with draw-bar bolt, draw-bar bolt is connected with the lathe pneumatic cylinder.

As a further aspect of the present invention, the rotation stopping surface is a multi-plane structure, and the size of the multi-plane structure is closely matched with the end of the third bolt.

The upper taper of the double-conical-surface spring expansion sleeve is the same as the upper taper, and the lower taper of the double-conical-surface spring expansion sleeve is the same as the taper of the conical surface of the mandrel.

The utility model provides a dish type gear shaping anchor clamps, beneficial effect lies in: the reliable positioning between the mandrel boss and the clamp seat is realized, the structure that the mandrel conical surface arranged on the taper mandrel is combined with the lower conical surface of the double-conical-surface spring expansion sleeve realizes the uniform up-and-down expansion deformation of the double-conical-surface spring expansion sleeve, and the structure of the rotation stopping bolt hole realizes the looseness of the taper pull rod and has the rotation stopping function; the upper positioning surface of the positioning plate is provided with a quartering groove structure, so that the contact area of the gear is reduced, and the lower positioning surface of the positioning plate is provided with the quartering groove structure, so that cuttings can be discharged conveniently; the upper conical surface can enable the double-conical-surface spring expansion sleeve to be stressed more uniformly, and the rotation stopping surface prevents the rotation of the taper pull rod to cause inaccurate positioning; the polymer elastic bodies are embedded in the upper four grooves and the lower four grooves, so that metal chips cannot enter the double-conical spring expansion sleeve when the double-conical spring expansion sleeve is stretched, expanded and deformed, the double-conical spring expansion sleeve is clamped, the double-conical spring expansion sleeve is stressed uniformly, the requirement on the repeated positioning precision of the clamp is met, and the service life of the clamp is also guaranteed; the utility model discloses both can guarantee the axial runout of gear location, can guarantee the runout of gear location again, rise the cover through the biconical face spring and fix a position the tooth base inner wall, positioning accuracy is high, can be fine prevent off-centre. Meanwhile, the tooth blank is convenient to assemble and disassemble; but also ensures the processing quality and efficiency of the spline.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the utility model discloses assembly structure semi-section schematic diagram that the embodiment provided.

Fig. 2 is an axial structural schematic view of the taper mandrel provided in the embodiment of the present invention.

Fig. 3 is a schematic view of a radial half-section structure of the taper mandrel provided by the embodiment of the present invention.

Fig. 4 is a schematic view of an axial structure of a positioning plate according to an embodiment of the present invention.

Fig. 5 is a radial half-section structure schematic diagram of a positioning plate provided by the embodiment of the present invention.

Fig. 6 is a schematic view of a semi-section structure of a double-conical-surface spring expansion sleeve provided by an embodiment of the present invention.

Fig. 7 is a schematic view of a taper pull rod structure provided in the embodiment of the present invention.

In the figure: 1. a clamp seat; 2. a taper mandrel; 21. a mandrel conical surface; 22. a rotation stopping bolt hole; 23. a mandrel boss; 24. a mandrel bolt hole; 3. a first bolt; 4. positioning a plate; 41. a positioning surface on the positioning plate; 42. a lower positioning surface of the positioning plate; 43. positioning the bolt hole; 5. a double-conical-surface spring expansion sleeve; 51. four grooves are arranged; 52. a lower four-groove; 6. a taper pull rod; 61. an upper conical surface; 62. a rotation stopping surface; 63. a draw bar bolt; 7. processing a workpiece; 8. a second bolt; 9. a third bolt; 10. a polymer elastomer.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

Referring to fig. 1-7, an embodiment of the present invention provides a disc gear shaping fixture, which is fixed on a numerical control gear shaping machine tool workbench through the cooperation of a fixture seat 1 and a bolt, and includes: tapering dabber 2, positioning disk 4, bipyramid face spring cover 5 that rises, tapering pull rod 6 and polymer elastomer 10, tapering

dabber

2 and 1 fixed connection of anchor clamps seat, be connected through the first bolt 3 of axial setting between tapering dabber 2 and the anchor clamps seat 1, positioning disk 4 and bipyramid face spring cover 5 cup joint with tapering dabber 2, terminal surface and the laminating of tapering dabber 2 under the positioning disk 4, positioning disk 4 passes through second bolt 8 accurate positioning on tapering dabber 2, bipyramid face spring cover 5 can slide in tapering dabber 2, be equipped with a plurality of polymer elastomer 10 on the bipyramid face spring cover 5 that rises, pull rod tapering 6 sets up on tapering dabber 2, tapering pull rod 6 and bipyramid face spring cover 5 cooperation installation that rises, polymer elastomer 10 is used for the shape and the reseing of bipyramid face spring cover 5 that rise. The axial runout and radial runout of gear positioning can be ensured, the inner wall of the gear blank is positioned through the double-conical-surface spring expansion sleeve, the positioning precision is high, and eccentricity can be well prevented. Meanwhile, the tooth blank is convenient to assemble and disassemble; and the gear shaping clamp ensures the processing quality and efficiency of the spline.

As shown in fig. 1-3, a mandrel boss 23 for fitting the fixture base 1 and a mandrel cone 21 for fitting the double-cone-surface spring expansion sleeve 5 are axially disposed on the taper mandrel 2, a circular disc for positioning is radially disposed on the taper mandrel 2, a rotation stop bolt hole 22 is radially disposed on the circular disc, a third bolt 9 is mounted in the rotation stop bolt hole 22, the third bolt 9 extends into the taper pull rod 6, a rotation stop bolt hole 22 is radially disposed on the taper mandrel 2, a mandrel bolt hole 24 is axially disposed on the circular disc, a central line of the mandrel bolt hole 24 is parallel to a central line of the taper mandrel 2, a distance between the mandrel bolt hole 24 and the taper mandrel 2 is greater than a radius of the mandrel boss 23, the mandrel bolt hole 24 is fitted with the first bolt 3, and the mandrel boss 23 is inserted into a central hole of the fixture base 1 for positioning. The mandrel boss 23 realizes reliable positioning with the fixture seat, the structure that the mandrel conical surface 21 arranged on the taper mandrel 2 is combined with the lower conical surface of the double-conical-surface spring expansion sleeve 5 realizes uniform up-down expansion deformation of the double-conical-surface spring expansion sleeve 5, the structure of the rotation stopping bolt hole 22 realizes loosening of the taper pull rod, and the rotation stopping effect is realized by controlling axial displacement and loosening rotation of the taper mandrel.

As shown in fig. 4 and 5, the upper and lower end surfaces of the positioning plate 4 are an upper positioning surface 41 and a lower positioning surface 42 of the positioning plate, through grooves divided into four equal parts are formed in the upper positioning surface 41 and the lower positioning surface 42 of the positioning plate, the upper positioning surface 41 of the positioning plate is matched with the positioning surface of the workpiece 7, the lower positioning surface 42 of the positioning plate is matched with the spindle bolt hole 24, a positioning bolt hole 43 is axially formed in the positioning plate 4, and a second bolt 8 is arranged in the positioning bolt hole 43. The positioning surface 41 on the positioning disk is provided with a quartering groove structure, which is beneficial to reducing the contact area of the gear, and the lower positioning surface 42 on the positioning disk is provided with a quartering groove structure, which is more convenient for discharging the cutting scraps, reduces the contact area and improves the positioning precision.

As shown in fig. 1 and 6, the double-conical spring expansion sleeve 5 is axially provided with two conical surfaces, an upper four-groove 51 and a lower four-groove 52 which are staggered and divided into four parts are axially arranged inside the conical surfaces, the upper four-groove 51 and the lower four-groove 52 are used for filling the polymer elastomer 10, the two conical surfaces are symmetrical on a radial central line of the double-conical spring expansion sleeve 5, the large diameter of the taper is on the end surface, the two conical surfaces are respectively matched with the taper mandrel 2 and the taper pull rod 6, and more specifically, the conical surfaces at two ends are respectively matched with the mandrel conical surface 21 and the upper conical surface 61.

As shown in fig. 1 and 7, the taper pull rod 6 is provided with an upper taper surface 61 matched with the double-taper spring expansion sleeve 5, the taper pull rod 6 is provided with a rotation stopping surface 62 matched with the taper mandrel 2, the tail part of the taper pull rod 6 is provided with a pull rod bolt 63, the pull rod bolt 63 is connected with a machine tool hydraulic cylinder, the rotation stopping surface 62 is of a multi-plane structure, and the size of the multi-plane structure is tightly matched with the end part of the third bolt 9. The multi-plane structure can also prevent the expansion sleeve from being damaged, the upper conical surface 61 can enable the double-conical-surface spring expansion sleeve to be stressed uniformly, and the rotation stop surface 62 prevents the rotation of the conical pull rod 6 to cause inaccurate positioning.

The upper taper of the double-conical-surface spring expansion sleeve 5 is the same as the taper of the upper conical surface 61, and the lower taper of the double-conical-surface spring expansion sleeve 5 is the same as the taper of the mandrel conical surface 21.

The high polymer elastomer 10 is embedded in the upper four grooves 51 and the lower four grooves 52, which is beneficial to preventing metal cutting from entering when the double-conical spring expansion sleeve 5 is expanded and deformed by tension, so that the double-conical spring expansion sleeve 5 is clamped, the double-conical spring expansion sleeve 5 can be stressed more uniformly, the requirement of the repeated positioning precision of the clamp is ensured, and the service life of the clamp is also ensured.

The working principle of the gear shaping clamp for the disc-type gear is as follows: firstly, the whole clamp is fixed on a numerical control gear shaping machine tool workbench through a T-shaped bolt and a nut by means of four mounting positioning grooves on the clamp body. The gear blank is placed into the vertical double-conical-surface spring expansion sleeve for positioning, the large end surface of the gear blank is abutted against the upper plane of the positioning disc, the inner wall of the gear blank is attached to the outer circle of the vertical double-conical-surface spring expansion sleeve, and axial and radial limiting of the gear blank is achieved. The positioning of the tooth blank is completed. At the moment, the taper pull rod penetrates through the double-taper-surface spring expansion sleeve and the taper mandrel, the taper pull rod is limited through a bolt in a bolt hole in the taper mandrel, and axial displacement and loosening and rotation of the taper mandrel are controlled. The threaded hole on the piston rod of the hydraulic cylinder of the machine tool is connected with the thread of the taper pull rod, and the conical surface of the taper pull rod extrudes and expands the inner wall part of the gear blank by the double-conical-surface spring expansion sleeve by means of the hydraulic tension of the piston rod of the hydraulic cylinder, so that the workpiece is tightened, and the blank is fixed. At this time, the gear blank is accurately positioned on the jig. Starting the machine tool, and continuously cutting the slotting tool along with the rotation of the workpiece to finish the spline machining of the gear blank at one time; starting the upward thrust of the piston rod, moving the taper pull rod upwards, and loosening the joint of the double-taper-surface spring expansion sleeve and the taper mandrel; the gear blank can be easily taken down, and the processed gear blank can be taken down. Thus, the whole processing process is completed; and (5) reloading the gear blank and starting secondary processing.

The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A disc gear shaping anchor clamps, this anchor clamps pass through anchor clamps seat (1) and fix at gear shaping lathe workstation, its characterized in that includes:

The taper mandrel (2) is fixedly connected with the clamp seat (1), and the positioning disc (4) and the double-taper-surface spring expansion sleeve (5) are sleeved with the taper mandrel (2);

The lower end face of the positioning disc (4) is attached to the taper mandrel (2);

The double-conical-surface spring expansion sleeve (5) can slide in the conical mandrel (2), and a plurality of high polymer elastomers (10) are arranged on the double-conical-surface spring expansion sleeve (5);

The taper pull rod (6) is arranged on the taper mandrel (2), and the taper pull rod (6) is installed in a matched mode with the double-conical-surface spring expansion sleeve (5);

The high polymer elastomer (10) is used for expanding and resetting the double-conical-surface spring expanding sleeve (5).

2. The disc-type gear shaping clamp according to claim 1, wherein the taper mandrel (2) is axially provided with a mandrel boss (23) for being matched with the clamp seat (1) to be installed and a mandrel conical surface (21) for being matched with the double-conical-surface spring expansion sleeve (5) to be installed, and the taper mandrel (2) is radially provided with a disc for positioning.

3. A disc-like gear shaping clamp according to claim 2 wherein the disc is provided with rotation stop bolt holes (22) radially and spindle bolt holes (24) axially.

4. A disc gear shaping clamp according to claim 3 wherein the centerline of the spindle bolt hole (24) is parallel to the centerline of the tapered spindle (2), the distance between the spindle bolt hole (24) and the tapered spindle (2) being greater than the radius of the spindle boss (23).

5. The disc type gear shaping clamp according to claim 1, wherein the upper and lower end surfaces of the positioning disc (4) are an upper positioning surface (41) and a lower positioning surface (42) of the positioning disc, and the upper positioning surface (41) and the lower positioning surface (42) of the positioning disc are provided with through grooves which are divided into four equal parts.

6. The disc-type gear shaping clamp according to claim 1, wherein two conical surfaces are axially arranged in the double-conical-surface spring expansion sleeve (5), an upper four groove (51) and a lower four groove (52) which are staggered and divided into four parts are axially arranged on the conical surfaces, and the upper four groove (51) and the lower four groove (52) are used for filling the high polymer elastomer (10).

7. The disc-type gear shaping clamp according to claim 6, wherein the two conical surfaces are symmetrical on a radial central line of the double-conical-surface spring expansion sleeve (5), the large diameter of the taper is at the end surface position, and the two conical surfaces are respectively matched with the taper mandrel (2) and the taper pull rod (6).

8. The disc-type gear shaping clamp according to claim 1, wherein the taper pull rod (6) is provided with an upper conical surface (61) matched with the double-conical-surface spring expansion sleeve (5), the taper pull rod (6) is provided with a rotation stopping surface (62) matched with the taper mandrel (2), a pull rod bolt (63) is arranged at the tail part of the taper pull rod (6), and the pull rod bolt (63) is connected with a hydraulic cylinder of a machine tool.

9. A disc gear shaping clamp according to claim 8 wherein the rotation stop surface (62) is a multi-planar structure distributed in an axial circular array, the multi-planar structure being sized to closely fit the end of the third bolt (9).

10. The disc-type gear shaping clamp according to claim 1, wherein the upper taper of the double-conical spring expansion sleeve (5) is the same as the taper of the upper conical surface (61), and the lower taper of the double-conical spring expansion sleeve (5) is the same as the taper of the mandrel conical surface (21).