High-speed planetary gear hobbing tooling

Abstract

The utility model discloses a high-speed planetary gear hobbing tool. The high-speed planetary gear hobbing tool comprises a base, a positioning seat and a tensioning mechanism, wherein the positioning seat is detachably mounted on the base, and the positioning seat is used to locate the end face and center of a workpiece; the positioning seat comprises an end face positioning seat body and a positioning mandrel, wherein the positioning mandrel is detachably fixed on the end face positioning seat body, and the end face positioning seat body is detachably fixed on the base, wherein the diameter of the end face positioning seat body is smaller than the diameter of the workpiece, and the base, the end face positioning seat body and the positioning mandrel are all provided with through holes for the tensioning mechanism to pass through, and the tensioning mechanism passes through the base and the positioning seat and then presses the workpiece onto the positioning seat. The utility model high-speed planetary gear hobbing tool can adapt to workpieces of different specifications by replacing the positioning seat.

Description

Technical Field

[0001] The utility model relates to the technical field of gear hobbing, in particular to a high-speed planetary gear hobbing tool. Background Art

[0002] The base of the current tooling used for gear hobbing usually has the function of positioning the workpiece, which means that the entire base needs to be replaced after the product is replaced. The base is usually large and difficult to replace. At the same time, due to the large specifications of the base, the cost of making bases of other specifications is high. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a high-speed planetary gear hobbing tool which only needs to replace the positioning seat.

[0004] In order to solve the above problems, the utility model provides a high-speed planetary gear hobbing tool, which includes a base, a positioning seat and a tensioning mechanism. The positioning seat can be detachably mounted on the base, and the positioning seat is used to locate the end face and the center of the workpiece; the positioning seat includes an end face positioning seat body and a positioning mandrel, and the positioning mandrel can be detachably fixed on the end face positioning seat body, and the end face positioning seat body can be detachably fixed on the base, and the diameter of the end face positioning seat body is smaller than the diameter of the workpiece. The base, the end face positioning seat body and the positioning mandrel are all provided with through holes for the tensioning mechanism to pass through, and the tensioning mechanism presses the workpiece onto the positioning seat after passing through the base and the positioning seat.

[0005] Furthermore, the end surface positioning seat body is mounted on the positioning seat by bolts, and the base is provided with a plurality of mounting holes adapted to the bolts in the radial direction.

[0006] Furthermore, the tensioning mechanism includes a lower pull rod, an upper pull rod, a pressure plate and an open pad. The upper pull rod can be detachably mounted on the lower pull rod. The upper pull rod has a clamping end face. The clamping end face of the upper pull rod is pressed on the open pad. The open pad is placed on the pressure plate, and the pressure plate is pressed on the workpiece.

[0007] Furthermore, a limit seat for limiting the rotation of the lower pull rod is arranged on the base.

[0008] Furthermore, the lower pull rod has a limiting portion with a polygonal cross section, and the limiting seat is provided with a polygonal limiting hole adapted to the limiting portion of the lower pull rod.

[0009] Furthermore, a guide portion for guiding the upper pull rod is provided on the positioning core shaft, and a guide groove adapted to the guide portion is provided on the upper pull rod.

[0010] Furthermore, the guide portion is a screw, and a screw hole for installing the screw is provided on the positioning core shaft.

[0011] Furthermore, the lower end of the upper pull rod is provided with an external thread, the lower pull rod is provided with an internal thread, and the upper pull rod is screwed to the lower pull rod.

[0012] Furthermore, the end surface positioning seat body is provided with an avoidance groove, the positioning core shaft is provided with an avoidance opening, and the avoidance opening and the avoidance groove are provided correspondingly.

[0013] Furthermore, the base has an accommodating cavity for accommodating the pull-down rod.

[0014] The high-speed planetary gear hobbing tooling of the utility model arranges the locating seat to be connected with the base in a detachable manner, and can realize the positioning of workpieces of different specifications by replacing the locating seat. It is only necessary to equip locating seats of different specifications, thereby reducing the cost of equipping the tooling. At the same time, the locating seat is also divided into a detachable end face locating seat body and a positioning mandrel, and the specifications can be further refined, and further classified by inner diameter and outer diameter. When the inner diameter is the same and the outer diameter is different, it is only necessary to replace the end face locating seat body, thereby further reducing the cost of equipping the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a preferred implementation mode of the high-speed planetary gear hobbing tooling of the utility model.

[0016] Figure 2 It is a cross-sectional view of the high-speed planetary gear hobbing tooling of the utility model.

[0017] Figure 3 The utility model is a structural schematic diagram of a workpiece mounted on a high-speed planetary gear hobbing tooling.

[0018] Figure 4 It is a schematic diagram of the structure of the base.

[0019] Figure 5 It is a structural diagram of the limit seat.

[0020] Figure 6 It is a structural schematic diagram of the end face positioning seat body.

[0021] Figure 7 It is a structural schematic diagram of the positioning mandrel.

[0022] Figure 8 It is a structural diagram of the lower pull rod.

[0023] Fig. 9 It is a structural diagram of the upper pull rod.

[0024] The meanings of the symbols in the accompanying drawings are:

[0025] Base 1, accommodating cavity 11, placement hole 12, mounting table 13, mounting hole 14, positioning seat 2, end face positioning seat body 21, avoidance groove 211, positioning core shaft 22, avoidance opening 221, screw hole 222, limit seat 3, limit hole 31, tensioning mechanism 4, lower pull rod 41, upper pull rod 42, guide groove 421, clamping end face 421, pressure plate 43, opening pad 44, guide part 5, workpiece 6. DETAILED DESCRIPTION

[0026] The utility model will be further described below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 3 As shown, the preferred embodiment of the high-speed planetary gear hobbing tooling of the utility model comprises a base 1, a positioning seat 2, a limiting seat 3 and a tensioning mechanism 4, wherein the base 1 is used to be installed on a gear hobbing machine, the positioning seat 2 is detachably installed on the base 1, the positioning seat 2 is used to locate the end face and center of the workpiece 6, the tensioning mechanism 4 is used to be connected to the power equipment on the gear hobbing machine, the power equipment is used to pull the tensioning mechanism 4, and the tensioning mechanism 4 passes through the base 1, the positioning seat 2 and the workpiece 6 to press the workpiece 6 on the positioning seat 2. The limiting seat 3 is installed on the base 1, and the limiting seat 3 is used to limit the tensioning mechanism 4 to ensure that the tensioning mechanism 4 does not rotate during the processing, thereby affecting the processing accuracy of the workpiece 6.

[0028] like Figure 4 As shown, the base 1 is in an inverted U shape, so that a receiving cavity 11 is formed inside the base 1, and the receiving cavity 11 is used to receive the tensioning mechanism 4. A placement hole 12 is provided on the base 1, and a mounting table 13 is provided in the placement hole 12, and the limit seat 3 is fixed in the mounting table 13 by screws. In other embodiments, if there is no limit seat 3, the mounting hole 14 on the base 1 can be used for the tensioning mechanism 4 to pass through. A plurality of mounting holes 14 are provided on the top surface of the base 1, and the mounting holes 14 are evenly distributed on the top surface, and a plurality of mounting holes 14 for mounting the positioning seat 2 are also distributed in the radial direction, so as to ensure that positioning seats 2 of different specifications can be mounted on the base 1.

[0029] like Figure 5 As shown, the limiting seat 3 has a limiting hole 31, and the limiting hole 31 is used to limit the tensioning mechanism 4. The cross section of the limiting hole 31 is a polygon, and the tensioning mechanism 4 is limited by the shape.

[0030] like Figure 6 and Figure 7As shown, the positioning seat 2 includes an end surface positioning seat 2 body and a positioning mandrel 22. The end surface positioning seat 2 body is used to position the end surface of the workpiece 6. The end surface positioning seat 2 body can be detachably mounted on the base 1. In this embodiment, bolt connection is adopted. The bolt passes through the end surface positioning seat 2 body and is screwed into the mounting hole 14 to achieve detachable installation. In other embodiments, it can also be mounted on the base 1 by snap-fitting or other detachable structures, which is convenient for replacing the end surface positioning seat 2 body; the diameter of the end surface positioning seat 2 body is smaller than the diameter of the workpiece 6, ensuring that the hobbing tool will not damage the end surface positioning seat 2 body during the processing. The positioning mandrel 22 can be detachably fixed on the end surface positioning seat 2 body. In this embodiment, bolt connection is adopted to achieve detachable installation. In other embodiments, it can also be mounted on the end surface positioning seat 2 body by snap-fitting or other detachable structures, which is convenient for replacing the positioning mandrel 22. The end surface positioning seat 2 body and the positioning mandrel 22 are both provided with through holes for the tensioning mechanism 4 to pass through. The positioning mandrel 22 is provided with a guide portion 5 for guiding the upper pull rod 42. The guide portion 5 is used to guide the upper pull rod 42 and limit the position of the upper pull rod 42, ensuring that the upper pull rod 42 can only go straight up and down. The end face positioning seat 2 body is provided with an avoidance groove 211, and the avoidance groove 211 is located on the top surface of the end face positioning seat 2 body. The positioning mandrel 22 is provided with an avoidance opening 221, and the avoidance opening 221 penetrates the positioning mandrel 22. The avoidance groove 211 and the avoidance opening 221 are used to avoid the lifting belt, so that the lifting belt can be pulled out after the workpiece 6 is lifted to the end face positioning seat 2 body and the positioning mandrel 22.

[0031] like Figure 8 and Fig. 9 As shown, the tensioning mechanism 4 includes a lower pull rod 41, an upper pull rod 42, a pressure plate 43 and an open pad 44. The lower end of the lower pull rod 41 is used to connect with the power equipment on the gear hobbing machine, and the upper end of the lower pull rod 41 is detachably connected to the lower end of the upper pull rod 42. The upper end of the upper pull rod 42 passes through the end surface positioning seat 2, the positioning mandrel 22 and the workpiece 6, and the upper end of the upper pull rod 42 is pressed on the open pad 44, and the open pad 44 is placed on the pressure plate 43, and the pressure plate 43 is pressed on the workpiece 6. The hardness of the pressure plate 43 is usually selected to be smaller than the hardness of the workpiece 6, so as to protect the workpiece 6.

[0032] Specifically, the upper end of the lower pull rod 41 is inserted into the limiting hole 31 of the limiting seat 3, and the upper end of the lower pull rod 41 is used as a limiting part. The cross section of the upper end of the lower pull rod 41 is polygonal. The limiting part cooperates with the limiting hole 31 to achieve limiting, ensuring that the lower pull rod 41 will not rotate, and also ensuring that the upper pull rod 42 will not rotate. The lower pull rod 41 is provided with an internal thread, and the lower end of the upper pull rod 42 is provided with an external thread. The upper pull rod 42 is screwed to the lower pull rod 41. The height formed by the combination of the upper pull rod 42 and the lower pull rod 41 can also be adjusted through the threaded connection to adapt to workpieces 6 of different height specifications. The upper end of the upper pull rod 42 has a clamping end face 421, and the clamping end face 421 abuts against the top surface of the opening pad 44 to ensure that the upper pull rod 42 will not fall off the opening pad 44. The upper pull rod 42 is provided with a guide groove 421, and the guide groove 421 is adapted to the guide part 5; the guide part 5 is a screw, and the positioning core shaft 22 is provided with a screw hole 222 for installing the screw. The guide part 5 is extended into the guide groove 421 by rotation, so that the upper pull rod 42 can be easily installed and disassembled.

[0033] When in use, the workpiece 6 is placed on the end face positioning seat 2 and the positioning core shaft 22, and the end face and center point of the workpiece 6 are positioned using the end face positioning seat 2 and the positioning core shaft 22. Then the pressure plate 43 and the opening pad 44 are placed on the workpiece 6 in sequence, and then the upper pull rod 42 is screwed to the lower pull rod 41. Finally, the power equipment on the gear hobbing machine can pull the lower pull rod 41, driving the lower pull rod 41 to move downward, and the lower pull rod 41 drives the upper pull rod 42 to move downward, thereby pressing the workpiece 6 against the end face positioning seat 2 and the positioning core shaft 22.

[0034] When processing workpieces 6 of different specifications, it is sufficient to replace the end face positioning seat 2 and the positioning core shaft 22. When the inner diameter of the workpiece 6 is the same, it is only necessary to replace the end face positioning seat 2. Fewer parts need to be replaced, and the number of parts to be replaced is also reduced, and the cost of the parts required for replacement is also reduced.

[0035] By replacing the positioning seat 2, the positioning of workpieces 6 of different specifications can be achieved. It is only necessary to equip positioning seats 2 of different specifications, which reduces the cost of equipping tooling; at the same time, the positioning seat 2 is also divided into a detachable end face positioning seat 2 body and a positioning core shaft 22, and the specifications can be further refined, and further classified by inner diameter and outer diameter. When the inner diameter is the same and the outer diameter is different, it is only necessary to replace the end face positioning seat 2 body, which further reduces the cost of equipping tooling.

[0036] The above are only implementation methods of the present utility model, and are not intended to limit the patent scope of the present utility model. Any equivalent structure made using the contents of the specification and drawings of the present utility model, directly or indirectly used in other related technical fields, are also within the patent protection scope of the present utility model.

Claims

1. A high-speed planetary gear hobbing tool, characterized in that: It includes a base, a positioning seat and a tensioning mechanism, the positioning seat can be detachably mounted on the base, and the positioning seat is used to locate the end face and center of the workpiece; the positioning seat includes an end face positioning seat body and a positioning mandrel, the positioning mandrel can be detachably fixed on the end face positioning seat body, the end face positioning seat body can be detachably fixed on the base, the diameter of the end face positioning seat body is smaller than the diameter of the workpiece, the base, the end face positioning seat body and the positioning mandrel are all provided with through holes for the tensioning mechanism to pass through, and the tensioning mechanism presses the workpiece onto the positioning seat after passing through the base and the positioning seat.

2. The high-speed planetary gear hobbing tool as claimed in claim 1, characterized in that: The end surface positioning seat body is mounted on the positioning seat by means of bolts, and the base is provided with a plurality of mounting holes adapted to the bolts in the radial direction.

3. The high-speed planetary gear hobbing tool as claimed in claim 1, characterized in that: The tensioning mechanism includes a lower pull rod, an upper pull rod, a pressure plate and an open pad. The upper pull rod is detachably mounted on the lower pull rod. The upper pull rod has a pressure end face. The pressure end face of the upper pull rod is pressed on the open pad. The open pad is placed on the pressure plate, and the pressure plate is pressed on the workpiece.

4. The high-speed planetary gear hobbing tool as claimed in claim 3, characterized in that: A limiting seat for limiting the rotation of the lower pull rod is arranged on the base.

5. The high-speed planetary gear hobbing tool as claimed in claim 4, characterized in that: The lower pull rod has a limiting portion with a polygonal cross section, and the limiting seat is provided with a polygonal limiting hole adapted to the limiting portion of the lower pull rod.

6. The high-speed planetary gear hobbing tool as claimed in claim 3, characterized in that: The positioning core shaft is provided with a guide portion for guiding the upper pull rod, and the upper pull rod is provided with a guide groove adapted to the guide portion.

7. The high-speed planetary gear hobbing tool as claimed in claim 6, characterized in that: The guide part is a screw, and the positioning core shaft is provided with a screw hole for installing the screw.

8. The high-speed planetary gear hobbing tool as claimed in claim 3, characterized in that: The lower end of the upper pull rod is provided with an external thread, the lower pull rod is provided with an internal thread, and the upper pull rod is screwed on the lower pull rod.

9. The high-speed planetary gear hobbing tool as claimed in claim 1, characterized in that: The end surface positioning seat body is provided with an avoidance groove, the positioning core shaft is provided with an avoidance opening, and the avoidance opening and the avoidance groove are provided correspondingly.

10. The high-speed planetary gear hobbing tool as claimed in claim 1, characterized in that: The base has an accommodating cavity for accommodating the lower pull rod.

Images