Cam curve machining tool for cutter relieving cam of gear shaping machine

Abstract

The utility model belongs to the field of gear machining equipment, and particularly provides a cam curve machining tool for a cutter relieving cam of a gear shaper, which comprises a reference seat, a reference shaft is arranged on the upper side of the reference seat, the reference shaft is perpendicular to the reference seat, the reference shaft is coaxial with the inner circle of the cutter relieving cam, and the reference seat positions the plane of the cutter relieving cam. The reference shaft positions the axis of the cutter relieving cam, a plurality of countersunk screw holes are formed in the reference base, the countersunk screw holes are matched with countersunk screws to install the reference base on a machine tool, external threads matched with a compression nut are arranged at the upper end of the reference shaft, and a pressing plate is arranged between the compression nut and the cutter relieving cam. The cutter relieving cam is arranged on the outer side of the reference shaft in a sleeving mode and then is pressed and fixed through the pressing nut and the pressing plate. According to the tool, the cutter relieving cam can be conveniently fixed to machining equipment, and meanwhile the cutter relieving cam can be machined and positioned.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear machining equipment field, especially a kind of cam curve machining frock for letting tool cam of gear shaping machine. BACKGROUND

[0002] According to the requirement of gear machining of gear shaping machine, letting tool movement is needed for gear shaping cutter when returning, to avoid dulling gear shaping cutter blade and scratching the surface of machined workpiece when returning. The letting tool trajectory of letting tool mechanism is realized by letting tool cam, and the letting tool cam is a kind of geometric closed cam mechanism, which is suitable for medium and high speed occasions, and its significant feature is that it has at least two complete cam profiles, which can control the follower to complete the push and return respectively, without transmission gap, and can well complete the reciprocating motion of cam push rod.

[0003] When processing letting tool cam, the accuracy of processing curve needs to be ensured, so the letting tool cam needs to be positioned and fixed, so a kind of machining frock is needed for accurate positioning of letting tool cam. SUMMARY

[0004] The utility model provides a kind of cam curve machining frock for letting tool cam of gear shaping machine, it is convenient to fix letting tool cam on processing equipment, and letting tool cam can be processed positioning simultaneously.

[0005] To solve the above technical problems, the technical scheme adopted by the utility model is: a kind of cam curve machining frock for letting tool cam of gear shaping machine, including reference seat, reference shaft is equipped on reference seat upper side, reference shaft is vertically arranged on reference seat, reference shaft is coaxial with the inner circle of letting tool cam, reference seat is positioned to the plane of letting tool cam, reference shaft is positioned to the axis of letting tool cam, reference seat is equipped with several countersunk hole, countersunk hole is cooperated with countersunk screw to install reference seat on processing machine tool, outer thread is equipped on the upper end of reference shaft and cooperated with compression nut, compression nut and letting tool cam are equipped with pressing plate, letting tool cam is fixed by compression nut and pressing plate after being sleeved on the outside of reference shaft.

[0006] In the preferred scheme, the reference shaft includes a reference section, the outer circle of the reference section is consistent with the diameter of the inner circle of the letting tool cam, and the outer circle of the reference section is the machining reference of the letting tool cam.

[0007] In the preferred scheme, the reference shaft further includes a platform section, the platform section is arranged on the upper side of the reference section, the diameter of the platform section is smaller than the diameter of the reference section, and the upper end of the platform section is lower than the top of the letting tool cam.

[0008] In the preferred scheme, a gasket is arranged between the pressing plate and the compression nut.

[0009] The cam curve machining frock for letting tool cam of the utility model has the following beneficial effects:

[0010] 1. The base is installed on the machining table of the machining equipment through the countersunk screw, the cutter cam is sleeved on the reference shaft, then the pressing plate and the gasket are sleeved on the reference shaft in sequence, and the cutter cam is pressed and fixed by the pressing nut, so that the installation of the cutter cam can be quickly realized, and the efficiency of the cam curve machining of the cutter cam is improved.

[0011] 2. The reference shaft is coaxial with the inner circle of the cutter cam, the axis of the reference shaft is the machining center of the cutter cam, the reference shaft positions the axis of the cutter cam, the upper surface of the reference base is the installation reference surface of the cutter cam, the cutter cam is horizontally installed, the accurate positioning of the cutter cam is realized through the setting of the machining reference, and therefore the machining precision of the cam curve is improved. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further explained in connection with the drawings and embodiments:

[0013] Figure 1 It is the whole structure schematic view of the utility model;

[0014] Figure 2 It is the structure schematic view of the reference shaft and the reference base;

[0015] Figure 3 It is the sectional view of the cutter cam;

[0016] Figure 4 It is the left view of Figure 3 ;

[0017] In the drawing: reference base 1, countersunk screw hole 101, reference shaft 2, reference section 201, table stage 202, external thread 203, pressing nut 3, pressing plate 4, gasket 5, cutter cam 6. DETAILED DESCRIPTION

[0018] As shown in the figure, a kind of cam curve machining tooling for cutter cam of gear shaping machine, including reference base 1, reference base 1 is circular structure, reference base 1 upper side is equipped with reference shaft 2, reference shaft 2 is perpendicular to reference base 1 setting, in specific use, reference base 1 and reference shaft 2 can be integrally formed. Figures 1-4 Reference shaft 2 and the inner circle of cutter cam 6 are coaxial, the inner circle or inner wall of cutter cam 6 is circular, the axis of reference shaft 2 is the machining center of cutter cam 6, reference shaft 2 positions the axis of cutter cam 6. Reference base 1 positions the plane of cutter cam 6, i.e. the installation reference surface of cutter cam 6 is the upper surface of reference base 1, to ensure that cutter cam 6 is horizontally installed.

[0019]

[0020] ​The datum seat 1 is provided with a plurality of countersunk screw holes 101, which are matched with countersunk screws to install the datum seat 1 on a machining machine tool, so as to realize the installation and fixation of the datum seat 1, and meanwhile, the countersunk screw holes 101 do not affect the flatness of the upper plane of the datum seat 1.

[0021] The upper end of the datum shaft 2 is provided with an external thread 203 matched with the compression nut 3, and the compression plate 4 is arranged between the compression nut 3 and the tool relieving cam 6. The compression plate 4 is an annular plate, and the outer diameter of the compression plate 4 is greater than the inner diameter of the tool relieving cam 6, so as to ensure that the compression plate 4 can cover the tool relieving cam 6 and compress the tool relieving cam 6. After the tool relieving cam 6 is sleeved on the outer side of the datum shaft 2, the tool relieving cam 6 is compressed and fixed by the compression nut 3 and the compression plate 4. By tightening the compression nut 3, the tool relieving cam 6 is compressed and fixed on the datum seat 1, so as to ensure that the tool relieving cam 6 remains relative to the tooling during the machining of the cam profile.

[0022] Preferably, in the embodiment, as shown in the drawings, the datum shaft 2 comprises a datum section 201, and the outer circle of the datum section 201 is consistent with the inner circle or inner diameter of the tool relieving cam 6. The outer circle of the datum section 201 is the machining datum of the tool relieving cam 6. Figure 2

[0023] The datum shaft 2 further comprises a platform section 202, which is arranged on the upper side of the datum section 201. The diameter of the platform section 202 is smaller than that of the datum section 201, and the upper end of the platform section 202 is lower than the top of the tool relieving cam 6. That is, when the tool relieving cam 6 is sleeved on the outer side of the datum shaft 2, the height of the top of the platform section 202 is lower than that of the tool relieving cam 6, so as to ensure that the platform section 202 does not affect the compression of the compression nut 3. Since the diameter of the platform section 202 is smaller than that of the datum section 201, there is an operation space between the outer side of the platform section 202 and the inner wall of the tool relieving cam 6, which facilitates the taking and placing of the tool relieving cam 6.

[0024] Preferably, the compression plate 4 and the compression nut 3 are provided with a gasket 5. By arranging the gasket 5, on the one hand, the compression degree of the compression nut 3 is improved, and on the other hand, according to different heights of the tool relieving cam 6, the tightening stroke of the compression nut 3 is adjusted by adjusting the thickness or number of the gasket 5.

[0025] The working principle of the tooling is as follows:

[0026] In specific use, the datum seat 1 is fixed on the machining plane of a machining equipment through countersunk screws, and then the tool relieving cam 6 is sleeved on the datum shaft 2. Since the datum shaft 2 is perpendicular to the datum seat 1, the datum shaft 2 is the rotary datum of the tool relieving cam 6, so as to ensure that the tool relieving cam 6 is vertically arranged on the machining equipment. Then, the compression plate 4 and the gasket 5 are sleeved on the datum shaft 2 in sequence, and the compression nut 3 is installed on the datum shaft 2 and matched with the external thread 203 to compress and fix the tool relieving cam 6, so as to complete the installation.

[0027] ​The above-mentioned embodiments are only preferred technical solutions of the present application, and should not be regarded as limitations on the present application, and the embodiments in the present application and the features in the embodiments can be combined with each other in any manner without conflict. The protection scope of the present application should be the technical solutions recorded in the claims, including the equivalent replacement solutions of the technical features recorded in the claims as the protection scope. That is, the equivalent replacement improvements within the scope are also within the protection scope of the present application.

Claims

1. A cam curve processing tool for a cutter relieving cam of a gear shaping machine, characterized in that: The utility model relates to a let -in -tool cam positioning device, including benchmark seat (1), benchmark seat (1) upside is equipped with benchmark shaft (2), benchmark shaft (2) is perpendicular to benchmark seat (1) setting, benchmark shaft (2) with the inner circle of let -in -tool cam (6) is coaxial, benchmark seat (1) is positioned to the plane of let -in -tool cam (6), benchmark shaft (2) is positioned to the axis of let -in -tool cam (6), benchmark seat (1) is equipped with a plurality of countersunk hole (101), and countersunk hole (101) is installed with countersunk screw and is installed on the processing machine tool of benchmark seat (1), the outer thread (203) of benchmark shaft (2) upper end is equipped with with the cooperation of compression nut (3), and the compression nut (3) and let -in -tool cam (6) between being equipped with pressing plate (4), let -in -tool cam (6) is wrapped in the outside of benchmark shaft (2) and is fixed through compression nut (3) and pressing plate (4) after being compressed.

2. The cam curve machining tooling for a cutter relieving cam of a gear shaping machine according to claim 1, characterized in that: The utility model relates to a let -in -tool cam positioning device, including benchmark segment (201), benchmark segment (201) outer circle with let -in -tool cam (6) inner circle diameter is identical, and the processing benchmark of let -in -tool cam (6) is benchmark segment (201) outer circle.

3. The cam curve machining tooling for a cutter relieving cam of a gear shaping machine according to claim 2, characterized in that: The utility model relates to a let -in -tool cam positioning device, including bench stage (202), and bench stage (202) setting is in benchmark segment (201) upside, and the diameter of bench stage (202) is less than the diameter of benchmark segment (201), and let -in -tool cam (6) top is lower than the upper end of bench stage (202).

4. The cam curve machining tooling fixture for an indexing cam of a gear shaping machine of claim 1, wherein: The utility model relates to a let -in -tool cam positioning device, including gasket (5) between pressing plate (4) and compression nut (3).

Images