CN217493285U - High accuracy gear shaft subassembly's pressure equipment frock - Google Patents
High accuracy gear shaft subassembly's pressure equipment frock Download PDFInfo
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- CN217493285U CN217493285U CN202221592206.4U CN202221592206U CN217493285U CN 217493285 U CN217493285 U CN 217493285U CN 202221592206 U CN202221592206 U CN 202221592206U CN 217493285 U CN217493285 U CN 217493285U
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Abstract
The utility model relates to a press mounting tool for a high-precision gear shaft assembly, which comprises an upper gland fixed on a press through a bolt and a press mounting tool body arranged on a workbench through a positioning structure, wherein the press mounting tool body comprises a press mounting base, a supporting sleeve and a supporting body which are arranged from bottom to top in sequence; the supporting sleeve is arranged on the press-fitting base, the supporting body is arranged on the press-fitting base, and a cylindrical compression spring is arranged between the supporting body and the mounting base; the support body is provided with a support cushion block and a protective resin sleeve I, and the support cushion block is provided with a protective resin sleeve II. The press-fitting base is arranged on the workbench through the positioning structure, a workpiece is placed in the supporting body, after press fitting is started, the supporting body moves downwards under the action of pressure, when the supporting body reaches a limit position, the end face of the workpiece disc gear is in contact with the supporting sleeve, excessive pressure applied by the press is borne, the workpiece shaft gear is prevented from seriously deforming, and the processing yield is improved.
Description
Technical Field
The utility model relates to a gear pressure equipment frock of high accuracy is an application industry gearbox, automobile new forms of energy gearbox intermediate shaft assembly's novel elasticity pressure equipment anchor clamps.
Background
In an electric drive new energy automobile speed reducer, a two-stage gear speed reducing mechanism is usually adopted, wherein a first-stage driven gear and a second-stage intermediate shaft are usually pressed into a gear shaft assembly in a large-diameter interference or tooth-side interference fit mode. In the press fitting process, the traditional rigid tool can enable the press fitting contact surface of the shaft tooth to bear overlarge pressure instantly, so that the gear is deformed, the gear precision is affected by the phenomenon that the tooth direction helical angle error or the tooth direction V value is out of tolerance, the NVH performance of the gearbox is affected, and the novel press fitting tool with high precision and capable of achieving elastic buffering is needed for preventing or improving the phenomenon.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the above-mentioned not enough that exists among the prior art, and provide a reasonable in design, simple structure, the processing yields is high, is applicable to the pressure equipment frock of not unidimensional high accuracy gear axle subassembly in the certain limit.
The utility model provides a technical scheme that above-mentioned problem adopted is: a press-fitting tool for a high-precision gear shaft assembly,
the press fitting tool comprises an upper gland fixed on a press through a bolt and a press fitting tool body arranged on a workbench through a positioning structure, wherein the press fitting tool body comprises a press fitting base, a supporting sleeve and a supporting body which are sequentially arranged from bottom to top; the supporting sleeve is arranged on the press-fitting base, the supporting body is arranged on the press-fitting base, and a cylindrical compression spring is arranged between the supporting body and the mounting base; the support body is provided with a support cushion block and a protective resin sleeve I, and the support cushion block is provided with a protective resin sleeve II.
The utility model discloses the jackshaft is placed on the supporter, the dish gear is placed on the jackshaft according to the assembly direction, it lays down to rotate work piece spline alignment, when carrying out the work piece pressure equipment, the supporter receives pressure cylinder compression spring and downstream, after terminal surface and the laminating of pressure equipment base under the supporter, receive ascending holding power, the dish gear is impressed gradually on the jackshaft, after holding pressure a period, it begins the return that rises to go up the pressure head, the work piece begins to kick-back along with the supporter and rises, fastening screw blocks supporter recovery position after a definite position, can conveniently take off the work piece this moment, a pressure equipment operation is accomplished.
The supporter passes through elastic connection between cylinder helical compression spring, guide structure and the pressure equipment base. The workpiece is prevented from being skewed in the press mounting process, the stress on the end face of the shaft gear is not balanced, and the support body and the press mounting base are provided with the guide structures, so that the workpiece is ensured to be in the central position in the press mounting process.
The utility model discloses protection resin sleeve I and supporting pad piece are installed on the supporter, and the unilateral clearance of reserving about 0.4mm with the work piece excircle makes things convenient for the part spacing and gets to put.
The press fitting base, the supporting sleeve, the supporting body and the supporting cushion block are made of carburizing steel.
The utility model discloses a frock body is according to work piece pressure equipment height H1, accurate design pressure equipment base, the high relation between supporter and the support sleeve, H1 (work piece pressure equipment height) = H2 (lip block to support sleeve up end distance) + H3 (the supporter lower surface with support sleeve upper surface contact clearance be terminal surface distance under zero back support sleeve upper surface and the intermediate shaft gear), H3 value range is between 0.03~0.10mm (refer to figure 2). After the contact gap between the lower surface of the support body and the upper surface of the support sleeve is zero, a gap of about 0.03-0.10 mm is reserved between the upper surface of the support sleeve and the lower end surface of the intermediate shaft gear, and workpieces within a certain tolerance variation range can be pressed in place.
Compared with the prior art, the utility model, have following advantage and effect: 1. the fixture has good positioning performance, the phenomenon of unbalanced stress on a press-fitting contact surface caused by workpiece inclination and the like can be prevented, the support sleeve can support and buffer the disc gear at the press-fitting limit position, the problem that the precision of a product is influenced due to serious deformation caused by overlarge stress on the end surface of the shaft gear is solved, and the production yield is further improved; 2. the tool is compact in structure, low in manufacturing cost, moderate in weight and universal, different gear shaft assemblies can be pressed and mounted by replacing different supporting cushion blocks, resin protecting sleeves and pressing covers, and the wire can be quickly replaced.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic view of a press-fitting structure according to an embodiment of the present invention.
In the figure: the press fitting device comprises a press fitting base 1, a supporting sleeve 2, a cylindrical compression spring 3, a supporting body 4, a supporting cushion block 5, a resin protecting sleeve I6, a resin protecting sleeve II 7, an upper pressing cover 8, a fastening screw 9, an intermediate shaft 10 and a shaft gear 11.
Detailed Description
The present invention will be described in further detail by way of examples with reference to the accompanying drawings, and the following examples are illustrative of the present invention and the present invention is not limited to the following examples.
Referring to fig. 1-2, the press-fitting tool for the high-precision gear shaft assembly in the present embodiment includes a press-fitting tool body mounted on a hydraulic press workbench and an upper gland 8 mounted on a hydraulic column, and the press-fitting tool body sequentially includes, from bottom to top, a press-fitting base 1, a support sleeve 2, a cylindrical compression spring 3, a support body 4, an adjustable support cushion block 5, a resin protection sleeve i 6, and a resin protection sleeve ii 7; pressure equipment base 1 installs on support sleeve 2, it is fixed with 4 hexagon socket head cap screw, supporter 4 dress is on pressure equipment base 1, through the clearance fit of guiding hole booth, high cylindrical compression spring 3 such as 4 are equipped with in the middle of supporter 4 and installation base 1, supporter 4 prevents to rotate through fastening screw 9 and 2 spacing connections of support sleeve, be equipped with removable height-adjusting's supporting pad 5 and protective resin cover II 7 on supporter 4, be equipped with protective resin cover I6 on supporting pad 5, play and prevent colliding with and the spacing effect of work piece, when normal condition, the spring bounces supporter 4, it is spacing through fastening screw 9.
The operation flow of this embodiment: after the procedure is adjusted, the press-fitting operation is performed, the large head of the intermediate shaft 10 is placed downwards in the support body 4, and the disk gear is placed on the intermediate shaft gear 11 in the correct press-fitting direction to be guided and aligned, as shown in fig. 1. After the press is started, the upper pressing head of the press moves downwards, when the upper pressing head and the upper end face of the disc gear start to contact, the supporting body 4 is pressed downwards, the cylindrical compression spring 3 starts to compress for buffering, and the supporting body 4 moves downwards along with the workpiece. When the lower end face of the support body 4 is attached to the press-fitting base 1, the disc gear is gradually pressed into the intermediate shaft 10 (as shown in a figure-2), when the disc gear is pressed in place, the lower end face of the disc gear is basically attached to the upper end face of the support sleeve 2 or has a small gap of about 003-0.10 mm, when the press-fitting force is too large, the upper end face of the support sleeve 2 has a certain buffering supporting or correcting effect on the lower end face of the disc gear, the influence on the precision due to the deformation of a workpiece tooth part caused by the excessive pressure is prevented, after a period of pressure holding, the upper pressure head starts to rise to return, the workpiece starts to rebound and rise along with the support body 4, the fastening screw 9 clamps the support body 4 to return to the original position after a certain position, the workpiece can be conveniently taken down at the moment, one-time press-fitting operation is completed, and the next press-fitting operation can be carried out.
This embodiment can be according to different parts, the different support sleeve of preparation, go up gland, supporter, supporting pad or protection resin cover, and the frock structure is unchangeable, is applicable to the big batch pressure equipment processing of similar jackshaft subassembly gear.
In addition, it should be noted that equivalent changes or simple changes made according to the structure, features and principles of the present invention are all included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a high accuracy gear shaft assembly's pressure equipment frock, includes pressure equipment frock body, pressure equipment frock body passes through location structure to be installed on the workstation, its characterized in that: the press fitting tool body comprises a press fitting base, a supporting sleeve and a supporting body which are sequentially arranged from bottom to top;
the supporting sleeve is arranged on the press-fitting base, the supporting body is arranged on the press-fitting base, and a cylindrical compression spring is arranged between the supporting body and the mounting base; the support body is provided with a supporting cushion block and a protective resin sleeve I, and the supporting cushion block is provided with a protective resin sleeve II.
2. A press fitting tool for a high-precision gear shaft assembly according to claim 1, which is characterized in that: the supporting body is elastically connected with the press-fitting base through the cylindrical spiral compression spring and the guide structure.
3. A press fitting tool for a high-precision gear shaft assembly according to claim 1, which is characterized in that: the press-fitting base, the supporting sleeve, the supporting body and the supporting cushion block are all made of carburizing steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221592206.4U CN217493285U (en) | 2022-06-24 | 2022-06-24 | High accuracy gear shaft subassembly's pressure equipment frock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221592206.4U CN217493285U (en) | 2022-06-24 | 2022-06-24 | High accuracy gear shaft subassembly's pressure equipment frock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217493285U true CN217493285U (en) | 2022-09-27 |
Family
ID=83340292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221592206.4U Active CN217493285U (en) | 2022-06-24 | 2022-06-24 | High accuracy gear shaft subassembly's pressure equipment frock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217493285U (en) |
-
2022
- 2022-06-24 CN CN202221592206.4U patent/CN217493285U/en active Active
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