Positioning tool for machining front shell of planet wheel
By designing the positioning tool for the front casing of the planet wheel, the concentric coaxial relationship between the positioning block and the circular step hole is solved, and the problem of difficult positioning of the hole position at the bottom of the front casing is blocked by the web plate, high-precision drilling operation is achieved, and product quality is improved.
Patent Information
- Application Number
- CN202421039164.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-11
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-11
AI Technical Summary
During the processing of the planet wheel front casing, the web plate blocks the circular step hole at the bottom of the front casing, making it difficult to position the drilling position of the bearing hole, which is prone to deviations, which increases rework and labor intensity, affects product quality.
A positioning tool for processing planet wheel front casing is designed, including a bottom plate and a positioning block. Two regular triangular positioning blocks are arranged on the bottom plate, which correspond to the circular step hole of the planet wheel front casing. Through the concentric coaxial relationship between the positioning block, the circular step hole and the bearing hole, the precise position of the bearing hole of the web plate is achieved.
Through the coordination of positioning blocks and circular step holes, drilling accuracy is improved, rework and labor intensity are reduced, and product quality is ensured.
Smart Images
Figure CN222626258U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of processing reduction box accessories, and in particular relates to a positioning tool for processing a planetary gear front housing. Background Art
[0002] Traditional reduction gearboxes usually use planetary gear transmission, and when the front housing outside the planetary gear is processed, the bearing holes on the internal web plate need to be assembled and positioned with the front housing before processing. The current processing steps are roughly as follows: first drill the bottom of the front housing, that is, first process two circular stepped holes, then assemble the web plate into the front housing, and then drill the web plate, that is, the two bearing holes processed must correspond to the two circular stepped holes of the front housing.
[0003] However, in actual processing, since the web will block the two circular stepped holes at the bottom of the front casing, it is difficult to locate the drilling positions of the two bearing holes. The drilled hole positions are prone to deviations, resulting in rework, increasing the labor intensity of workers, and affecting product quality.
[0004] For this reason, a positioning tool for processing the front housing of the planetary gear is urgently needed. Utility Model Content
[0005] In view of the above-mentioned defects existing in the prior art, the utility model provides a positioning tool for processing a planetary gear front housing, comprising a bottom plate, two circular stepped holes are arranged at the bottom of the planetary gear front housing, the two circular stepped holes are divided into a first circular stepped hole and a second circular stepped hole, and the aperture of the first circular stepped hole is smaller than the aperture of the second circular stepped hole, a circular web is arranged inside the planetary gear front housing, a first bearing hole close to the center position and a second bearing hole deviating from the center position are opened on the web, and the first bearing hole and the second bearing hole correspond to the first circular stepped hole and the second circular stepped hole respectively; the bottom plate is rectangular Two equilateral triangular positioning blocks are fixedly arranged on the top surface of the bottom plate, the two positioning blocks are divided into a first positioning block and a second positioning block, and the area of the upper surface of the first positioning block is smaller than the area of the upper surface of the second positioning block, the first positioning block and the second positioning block respectively correspond to the first circular stepped hole and the second circular stepped hole of the planetary gear front housing, and the shape of the first positioning block is adapted to the first circular stepped hole, and the shape of the second positioning block is adapted to the second circular stepped hole, the connecting line of the centers of the two positioning blocks is parallel to the rectangular long side of the bottom plate, positioning holes are opened at the four corners of the bottom plate, and a bolt assembly is installed in each positioning hole.
[0006] Optionally, the base plate is made of stainless steel or carbon steel.
[0007] Optionally, three corners of the first positioning block and the second positioning block are chamfered, and circular holes are provided in the centers of the first positioning block and the second positioning block.
[0008] Specifically, the three corners of the first positioning block and the second positioning block are all chamfered, which can increase the contact points with the circular stepped hole and improve the positioning accuracy and stability.
[0009] Optionally, the bolt assembly includes a hexagon socket bolt inserted into the positioning hole, and a T-shaped block is threadedly connected to the bottom end of the hexagon socket bolt.
[0010] Specifically, the T-block is adapted to the trapezoidal groove on the workbench of the machining center.
[0011] The utility model also includes other components that can enable a positioning tool for processing a planetary gear front housing to be used normally, which are all conventional technical means in the art. In addition, the devices or components not limited in the utility model all adopt conventional technical means in the art.
[0012] The working principle of the utility model is that after the two circular stepped holes at the bottom of the planetary gear front housing are processed, the bottom plate is placed on the workbench of the machining center, so that the four T-shaped blocks under the bottom plate are inserted into the trapezoidal grooves of the workbench, and then the four hexagon socket bolts are tightened to fix the bottom plate on the workbench, and then the parameters of the drilling mechanism of the machining center are set so that the center of the drilling position is coaxial with the center of the positioning block, and the planetary gear front housing equipped with a web plate is placed on the bottom plate, so that the first positioning block and the second positioning block of the bottom plate are respectively inserted into the first circular stepped hole and the second circular stepped hole of the planetary gear front housing to complete the positioning of the planetary gear front housing, and finally the web plate is drilled by the drilling mechanism of the machining center, that is, two bearing holes on the web plate are processed.
[0013] The beneficial effects of the utility model are simple structure and easy use. By positioning the front housing of the planetary gear, it is convenient to locate the drilling position on the web. The positioning block, the circular stepped hole and the bearing hole are concentric and coaxial to improve the drilling accuracy and ensure product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The utility model is further described below in conjunction with the accompanying drawings and embodiments.
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0016] Figure 2 It is a schematic diagram of the bottom structure of the bottom plate of the utility model.
[0017] Figure 3 It is a schematic diagram of the structure of the planetary gear front housing.
[0018] Figure 4 This is a schematic diagram of the structure of the web.
[0019] In the figure: 1. bottom plate, 2. planetary gear front housing, 3. first circular stepped hole, 4. second circular stepped hole, 5. web plate, 6. first bearing hole, 7. second bearing hole, 8. first positioning block, 9. second positioning block, 10. positioning hole, 11. hexagon socket bolt, 12. T-block. DETAILED DESCRIPTION
[0020] The present invention is described in detail below in conjunction with the drawings and specific embodiments in the embodiments of the present invention. The description here is only used to explain the present invention, but not to limit the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work, any modifications, equivalent replacements, improvements, etc., should be included in the protection scope of the present invention.
[0021] Example
[0022] like Figure 1-4 As shown, the embodiment of the utility model provides a positioning tool for processing a planetary gear front housing, including a bottom plate 1, the bottom of the planetary gear front housing 2 is provided with two circular stepped holes, the two circular stepped holes are divided into a first circular stepped hole 3 and a second circular stepped hole 4, and the aperture of the first circular stepped hole 3 is smaller than the aperture of the second circular stepped hole 4, and a circular web 5 is provided inside the planetary gear front housing 2, and a first bearing hole 6 close to the center position and a second bearing hole 7 deviating from the center position are opened on the web 5, and the first bearing hole 6 and the second bearing hole 7 correspond to the first circular stepped hole 3 and the second circular stepped hole 4 respectively; the bottom plate 1 is rectangular, and the material of the bottom plate 1 is carbon steel, and two equilateral triangular positioning blocks are fixedly provided on the top surface of the bottom plate 1, and the two positioning blocks are divided into a first positioning block 8 and a second positioning block 9, and the area of the upper surface of the first positioning block 8 is smaller than that of the upper surface of the second positioning block 9. The first positioning block 8 and the second positioning block 9 respectively correspond to the first circular stepped hole 3 and the second circular stepped hole 4 of the planetary gear front housing 2, and the shape of the first positioning block 8 is adapted to the first circular stepped hole 3, and the shape of the second positioning block 9 is adapted to the second circular stepped hole 4. The three corners of the first positioning block 8 and the second positioning block 9 are chamfered, which can increase the contact points with the circular stepped holes and improve the positioning accuracy and stability; the centers of the first positioning block 8 and the second positioning block 9 are each provided with a circular hole, and the connecting line of the centers of the two positioning blocks is parallel to the rectangular long side of the bottom plate 1; the four corners of the bottom plate 1 are provided with positioning holes 10, and each positioning hole 10 is installed with a bolt assembly, and the bolt assembly includes a hexagon socket bolt 11 penetrated in the positioning hole 10, and the bottom end of the hexagon socket bolt 11 is threadedly connected with a T-shaped block 12, and the T-shaped block 12 is adapted to the trapezoidal groove on the workbench of the machining center.
[0023] The working principle of the utility model is that after the two circular stepped holes at the bottom of the planetary gear front housing 2 are processed, the bottom plate 1 is placed on the workbench of the machining center, so that the four T-shaped blocks 12 below the bottom plate 1 are inserted into the trapezoidal grooves of the workbench, and then the four hexagon socket bolts 11 are tightened to fix the bottom plate 1 on the workbench, and then the parameters of the drilling mechanism of the machining center are set so that the center of the drilling position is coaxial with the center of the positioning block, and the planetary gear front housing 2 equipped with the web plate 5 is placed on the bottom plate 1, so that the first positioning block 8 and the second positioning block 9 of the bottom plate 1 are respectively inserted into the first circular stepped hole 3 and the second circular stepped hole 4 of the planetary gear front housing 2 to complete the positioning of the planetary gear front housing 2, and finally the web plate 5 is drilled by the drilling mechanism of the machining center, that is, two bearing holes on the web plate 5 are processed.
[0024] The embodiments of the present invention have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.
Claims
1. A positioning tool for processing a planetary gear front housing, comprising a bottom plate, wherein the bottom of the planetary gear front housing is provided with two circular stepped holes, the two circular stepped holes are divided into a first circular stepped hole and a second circular stepped hole, and the aperture of the first circular stepped hole is smaller than the aperture of the second circular stepped hole, characterized in that: The base plate is rectangular, and two equilateral triangular positioning blocks are fixedly arranged on the top surface of the base plate. The two positioning blocks are divided into a first positioning block and a second positioning block, and the area of the upper surface of the first positioning block is smaller than the area of the upper surface of the second positioning block. The first positioning block and the second positioning block respectively correspond to the first circular stepped hole and the second circular stepped hole of the planetary gear front housing, and the shape of the first positioning block is adapted to the first circular stepped hole, and the shape of the second positioning block is adapted to the second circular stepped hole. The line connecting the centers of the two positioning blocks is parallel to the long side of the rectangle of the base plate. Positioning holes are opened at the four corners of the base plate, and a bolt assembly is installed in each positioning hole.
2. The positioning tool for machining the planetary gear front housing according to claim 1, characterized in that: The base plate is made of stainless steel or carbon steel.
3. The positioning tool for processing the planetary gear front housing according to claim 1, characterized in that: The three corners of the first positioning block and the second positioning block are all chamfered, and the centers of the first positioning block and the second positioning block are both provided with round holes.
4. The positioning tool for machining the planetary gear front housing according to claim 1, characterized in that: The bolt assembly comprises a hexagon socket bolt which is inserted into the positioning hole, and a T-shaped block is threadedly connected to the bottom end of the hexagon socket bolt.