CN216371901U

CN216371901U - High-precision internal spline planet carrier positioning tool

Info

Publication number: CN216371901U
Application number: CN202123200880.1U
Authority: CN
Inventors: 颜建荣; 盛琦; 杨仁全
Original assignee: WENLING MINGHUA GEAR CO Ltd
Current assignee: WENLING MINGHUA GEAR CO Ltd
Priority date: 2021-12-17
Filing date: 2021-12-17
Publication date: 2022-04-26
Anticipated expiration: 2031-12-17

Abstract

The utility model belongs to the technical field of positioning tools, and particularly relates to a high-precision positioning tool for an internal spline planet carrier; the clamping device comprises a chassis, a supporting pad and a pressing plate, wherein the supporting pad and the pressing plate are used for positioning the upper end surface and the lower end surface of a workpiece respectively, an elastic fluted disc is fixedly arranged on the chassis, a through hole is formed in the supporting pad, the lower end of the elastic fluted disc is arranged in the through hole of the supporting pad, the supporting pad is fixedly arranged on the chassis, the supporting pad extends out of the upper end of the elastic fluted disc, a fluted disc is arranged in the middle of the elastic fluted disc, the fluted disc is internally supported on an internal spline of the workpiece, a sliding sleeve is sleeved on the upper part of the elastic fluted disc, an outer cylindrical surface of the sliding sleeve is internally supported on the internal spline of the workpiece, and the sliding sleeve and the pressing plate are pressed by a pressing mechanism; the elastic fluted disc is adopted, follow-up property caused by disconnection is avoided, the elastic fluted disc is in meshed connection with the internal spline, any disconnected gap is avoided, any foreign matter cannot enter to influence precision, the elastic fluted disc is completely positioned by the tooth surface of the elastic fluted disc, and repeated positioning precision is high.

Description

High-precision internal spline planet carrier positioning tool

The technical field is as follows:

the utility model belongs to the technical field of positioning tools, and particularly relates to a high-precision positioning tool for an internal spline planet carrier.

Background art:

the positioning of the internal splines is difficult. Generally, the reference is converted into the small diameter or large diameter centering of the internal spline, the reference conversion error exists between the reference conversion error and the spline pitch circle, and the machining precision is difficult to ensure in a planet carrier with the position degree smaller than 0.02. And an internal tooth expansion sleeve adopting a conventional internal cone mode is also used for positioning. However, since the internal tooth expansion sleeve must have a certain length, the over-positioning phenomenon of the end face and the tooth face is easily caused. In addition, the expansion sleeve is disconnected, the expansion sleeve is too flexible, and the error of the internal spline can be repeated.

The utility model content is as follows:

the utility model aims to provide a high-precision positioning tool for an internal spline planet carrier, which can not duplicate the error of an internal spline.

The utility model is realized by the following steps:

the utility model provides a high accuracy internal spline planet carrier location frock, includes the chassis, carries out the supporting pad and the clamp plate of fixing a position to terminal surface about the internal spline planet carrier respectively, has set firmly the elasticity fluted disc on the chassis, be provided with the through-hole on the supporting pad, the lower extreme setting of elasticity fluted disc is in the through-hole of supporting pad, just the supporting pad sets firmly on the chassis, the supporting pad is stretched out to the upper end of elasticity fluted disc, the middle part of elasticity fluted disc is provided with the fluted disc, prop in the fluted disc on the internal spline of work piece, the upper portion cover of elasticity fluted disc is equipped with the sliding sleeve, prop in the outer cylinder of sliding sleeve on the internal spline of work piece, sliding sleeve, clamp plate are compressed tightly by hold-down mechanism.

In foretell high accuracy internal spline planet carrier location frock, be provided with the first flank of tooth with internal spline looks adaptation on the outer cylinder of fluted disc, be provided with the second flank of tooth with internal spline looks adaptation on the outer cylinder of sliding sleeve, the tooth alignment setting on first flank of tooth, the second flank of tooth.

In the positioning tool for the high-precision internal spline planet carrier, the thickness of the first tooth surface is far smaller than the height of the internal spline, and the sum of the thicknesses of the first tooth surface and the second tooth surface is smaller than the height of the internal spline.

In foretell high accuracy internal spline planet carrier location frock, the upper end of sliding sleeve is provided with the briquetting, the briquetting is compressed tightly by hold-down mechanism.

In foretell high accuracy internal spline planet carrier location frock, hold-down mechanism includes the piece that compresses tightly of outband screw thread, compress tightly and be provided with the screw hole along the axial in the piece, threaded hole is provided with the steel ball, and it has compression screw still the spiro union in the screw hole, compression screw's lower extreme is pressed and is established on the steel ball, the upper end that compresses tightly stretches out outside the clamp plate, is provided with the external screw thread in the upper end that compresses tightly the piece, and the spiro union has the nut to compress tightly the clamp plate in the upper end that compresses tightly the piece.

In the above-mentioned high accuracy internal spline planet carrier location frock, be provided with the centre bore on the chassis, the bottom surface downwardly extending of elasticity fluted disc is provided with the location projection, the location projection is inserted and is established in the centre bore.

In foretell high accuracy internal spline planet carrier location frock, the lower extreme of elasticity fluted disc is provided with the positioning disk, the positioning disk sets up on the upper plane of chassis and through two more than fastener and chassis fixed connection that circumference distributes.

In foretell high accuracy internal spline planet carrier location frock, the part between the positioning disk of elasticity fluted disc and the fluted disc is big end down's frustum form in the diameter, just the lower extreme maximum dimension of frustum is less than the diameter of the through-hole on the supporting pad, the upper end maximum dimension of frustum is less than the internal diameter of internal spline.

In the above-mentioned high accuracy internal spline planet carrier location frock, the supporting pad passes through more than two fasteners and chassis fixed connection that the circumference distributes.

Compared with the prior art, the utility model has the outstanding advantages that:

1. the elastic fluted disc is adopted, follow-up property generated by disconnection is avoided, the elastic fluted disc is in meshed connection with the internal spline, any disconnected gap is avoided, the precision cannot be influenced by any foreign matter, the elastic fluted disc is completely positioned by the tooth surface of the elastic fluted disc, and the repeated positioning precision is high;

2. the utility model adopts the elastic fluted disc for centering, and the end surface is accurately positioned; the end face positioning and the radial centering of the internal spline are not interfered with each other under the condition of ensuring zero clearance, and the phenomena of over-positioning interference and the like do not exist, so that the high-precision positioning is realized;

3. the screwing action of the utility model is through an internal thread steel ball mechanism, because of the small contact friction force of the steel ball, the operation can be more labor-saving, the operation and popularization are convenient, and in addition, the cost of the clamp is also lower.

Description of the drawings:

fig. 1 is a schematic cross-sectional view of the present invention.

In the figure: 1. a chassis; 2. a workpiece; 3. a support pad; 4. pressing a plate; 5. an elastic fluted disc; 6. a through hole; 7. a fluted disc; 8. a sliding sleeve; 9. briquetting; 10. a compression member; 11. a steel ball; 12. a compression screw; 13. a central bore; 14. a central bore; 15. positioning a plate; 16. and (6) positioning a disc.

The specific implementation mode is as follows:

the utility model is further described below in specific embodiments, with reference to fig. 1:

the utility model provides a high accuracy internal spline planet carrier location frock, includes chassis 1, carries out the supporting pad 3 and the clamp plate 4 that fix a position to terminal surface about 2 work pieces respectively, and during the use, work piece 2 is fixed a position between supporting pad 3 and clamp plate 4. An elastic fluted disc 5 is fixedly arranged on the chassis 1, and the elastic fluted disc 5 is made of elastic materials such as rubber, silica gel and the like. Be provided with through-hole 6 on the supporting pad 3, the lower extreme setting of elasticity fluted disc 5 is in through-hole 6 of supporting pad 3, just supporting pad 3 sets firmly on chassis 1, supporting pad 3 is stretched out to the upper end of elasticity fluted disc 5, the middle part of elasticity fluted disc 5 is provided with fluted disc 7, prop in fluted disc 7 on the internal spline of work piece 2, the upper portion cover of elasticity fluted disc 5 is equipped with sliding sleeve 8, prop in the outer cylinder of sliding sleeve 8 on the internal spline of work piece 2, sliding sleeve 8, clamp plate 4 are compressed tightly by hold-down mechanism.

Specifically, in order to realize the gapless connection between the internal spline and the elastic fluted disc 5 and the sliding sleeve 8, a first tooth surface matched with the internal spline on the workpiece 2 is arranged on the outer cylindrical surface of the fluted disc 7, a second tooth surface matched with the internal spline on the workpiece 2 is arranged on the outer cylindrical surface of the sliding sleeve 8, and the teeth on the first tooth surface and the second tooth surface are arranged in an aligned manner. The gapless connection can not enter any foreign matter to influence the precision.

In this embodiment, the fluted disc 7 is a basin-shaped set, and the fluted disc 7 is a thin elastic disc so that it deforms under the effect of the squeezing force. Specifically, the thickness of the first tooth surface is far smaller than the height of the internal spline, and the sum of the thicknesses of the first tooth surface and the second tooth surface is smaller than the height of the internal spline. The contact area between the first tooth surface and the internal spline on the workpiece 2 is small, the error of the internal spline can not be duplicated, the first tooth surface of the elastic fluted disc 5 is used for centering, the follow-up property caused by disconnection is avoided, and the repeated positioning precision is high.

In conclusion, the utility model can realize that the end face positioning and the radial centering of the internal spline on the workpiece 2 do not interfere with each other, and the phenomena of over-positioning interference and the like do not exist, thereby realizing high-precision positioning.

Specifically, the upper end of the sliding sleeve 8 is provided with a pressing block 9, and the pressing block 9 is pressed by a pressing mechanism. The pressing mechanism can realize the positioning of the workpiece 2 in the axial position.

In this embodiment, the pressing mechanism includes a pressing member 10 with external threads, a threaded hole is axially formed in the pressing member 10, a steel ball 11 is arranged in the threaded hole, a pressing screw 12 is further screwed in the threaded hole, the lower end of the pressing screw 12 is pressed on the steel ball 11, the upper end of the pressing member 10 extends out of the pressing plate 4, external threads are formed in the upper end of the pressing member 10, and a nut 13 is screwed in the upper end of the pressing member 10 to press the pressing plate 4.

The utility model has the advantages that the screwing action is realized through the compression screw 12 and the internal thread steel ball mechanism of the steel ball 11, and the steel ball 11 has small contact friction force, so the screwing is labor-saving.

Specifically, the chassis 1 is provided with a central hole 14, the central hole 14 is usually located at the center of the chassis 1, a positioning convex pillar 15 extends downwards from the bottom surface of the elastic toothed disc 5, and the positioning convex pillar 15 is inserted into the central hole 14. The positioning convex column 15 is connected with the central hole 14 in a tight fit mode, and centering of the elastic fluted disc 5 is achieved.

In order to achieve a fixed connection of the elastic toothed disc 5 to the chassis 1. The lower end of the elastic fluted disc 5 is provided with a positioning disc 16, the positioning disc 16 is arranged on the upper plane of the chassis 1 and is fixedly connected with the chassis 1 through more than two fastening pieces distributed circumferentially, and the fastening pieces are preferably screws.

In order to achieve a fixed connection of the support pad 3 to the chassis 1. The supporting pad 3 is fixedly connected with the chassis 1 through more than two fastening pieces distributed circumferentially, and the fastening pieces are preferably screws.

The part between the positioning disc 16 and the fluted disc 5 of the elastic fluted disc 5 is in a frustum shape with a small upper diameter and a large lower diameter, the maximum size of the lower end of the frustum is smaller than the diameter of the through hole 6 on the supporting pad 3, and the maximum size of the upper end of the frustum is smaller than the small diameter of the internal spline. By the design, the interference of the workpiece 2 during installation can be reduced, and the installation is convenient.

The working principle of the utility model is as follows:

during work piece 2 got into anchor clamps through 8 location direction of sliding sleeve, the tooth (first flank of tooth, second flank of tooth) of sliding sleeve 8 and elasticity fluted disc 3 were aligned, it compresses tightly sliding sleeve 8 through steel ball 11 and briquetting 9 balance to screw up housing screw 12, sliding sleeve 8 compresses tightly elasticity fluted disc 3 and produces the displacement and evenly expands to completely by the accurate centering of elasticity fluted disc 3, the at utmost has reduced the influence of 2 internal spline errors of work piece to the positioning remapping error, it locks work piece 2 through clamp plate 4 to screw up nut 9 at last.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so: all equivalent changes made according to the shape, structure and principle of the utility model are covered by the protection scope of the utility model.

Claims

1. The utility model provides a high accuracy internal spline planet carrier location frock which characterized in that: including chassis (1), support pad (3) and clamp plate (4) that the terminal surface was fixed a position about work piece (2) respectively, elastic fluted disc (5) have set firmly on chassis (1), be provided with through-hole (6) on support pad (3), the lower extreme setting of elastic fluted disc (5) is in through-hole (6) of support pad (3), just support pad (3) set firmly on chassis (1), support pad (3) are stretched out to the upper end of elastic fluted disc (5), the middle part of elastic fluted disc (5) is provided with fluted disc (7), fluted disc (7) internal stay is on the internal spline of work piece (2), the upper portion cover of elastic fluted disc (5) is equipped with sliding sleeve (8), the outer cylinder internal stay of sliding sleeve (8) is on the internal spline of work piece (2), sliding sleeve (8), clamp plate (4) are compressed tightly by hold-down mechanism.

2. The high-precision internal spline planet carrier positioning tool according to claim 1, characterized in that: the outer cylindrical surface of the fluted disc (7) is provided with a first tooth surface matched with the inner spline, the outer cylindrical surface of the sliding sleeve (8) is provided with a second tooth surface matched with the inner spline, and the teeth on the first tooth surface and the second tooth surface are aligned.

3. The high-precision internal spline planet carrier positioning tool according to claim 2, characterized in that: the thickness of the first tooth surface is far smaller than the height of the internal spline, and the sum of the thicknesses of the first tooth surface and the second tooth surface is smaller than the height of the internal spline.

4. The high-precision internal spline planet carrier positioning tool according to claim 1, 2 or 3, is characterized in that: the upper end of the sliding sleeve (8) is provided with a pressing block (9), and the pressing block (9) is pressed by a pressing mechanism.

5. The high-precision internal spline planet carrier positioning tool according to claim 4, characterized in that: the pressing mechanism comprises a pressing piece (10) with an external thread, a threaded hole is formed in the pressing piece (10) along the axial direction, a steel ball (11) is arranged in the threaded hole, a pressing screw (12) is screwed in the threaded hole, the lower end of the pressing screw (12) is pressed on the steel ball (11), the upper end of the pressing piece (10) extends out of the pressing plate (4), and a nut (13) is screwed at the upper end of the pressing piece (10) to press the pressing plate (4).

6. The high-precision internal spline planet carrier positioning tool according to claim 1, 2 or 3, is characterized in that: the chassis (1) is provided with a central hole (14), the bottom surface of the elastic fluted disc (5) extends downwards to be provided with a positioning convex column (15), and the positioning convex column (15) is inserted in the central hole (14).

7. The high-precision internal spline planet carrier positioning tool according to claim 6, characterized in that: the lower end of the elastic fluted disc (5) is provided with a positioning disc (16), and the positioning disc (16) is arranged on the upper plane of the chassis (1) and is fixedly connected with the chassis (1) through more than two fasteners distributed in the circumferential direction.

8. The high-precision internal spline planet carrier positioning tool according to claim 7, characterized in that: the part between the positioning disc (16) and the fluted disc (7) of the elastic fluted disc (5) is in a frustum shape with the diameter being small at the top and big at the bottom, the maximum size of the lower end of the frustum is smaller than the diameter of the through hole (6) on the supporting pad (3), and the maximum size of the upper end of the frustum is smaller than the small diameter of the internal spline.

9. The high-precision internal spline planet carrier positioning tool according to claim 1, 2 or 3, is characterized in that: the supporting pad (3) is fixedly connected with the chassis (1) through more than two fasteners distributed in the circumferential direction.