Gear machining clamp

Abstract

The utility model relates to the technical field of gear machining, in particular to a gear machining clamp which comprises a clamp base, a taper body, a positioning disc, an elastic expansion sleeve and a lower pull rod, the taper body is installed on the clamp base, the positioning disc is installed on the taper body, the lower pull rod is installed in the clamp base in a sliding mode, and the elastic expansion sleeve is connected with the lower pull rod. The taper body comprises a conical surface section, and the inner wall of the expansion sleeve part of the elastic expansion sleeve is conical and is matched with the conical surface section of the taper body. According to the gear machining clamp, the positioning disc is used for positioning and supporting a gear, the lower pull rod is pulled down to drive the elastic expansion sleeve to move downwards, in the downward moving process, the conical surface of the taper body is used for expanding the expansion sleeve part of the elastic expansion sleeve to enable the elastic expansion sleeve part to expand the gear, accurate positioning and clamping of the small-aperture gear are achieved, and the machining precision of the small-aperture gear is improved. The coaxiality and the end face run-out in the small-aperture gear machining process are effectively guaranteed and controlled, and the machining precision of the small-aperture gear is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to gear machining technical field, concretely relates to a gear machining fixture. BACKGROUND

[0002] Gear as the key transmission component, its machining precision has the vital influence to the performance and reliability of entire mechanical equipment. Along with the continuous development of industrial technology, the requirement of gear precision is increasing day by day. At present, although the machining process of big aperture gear has been quite mature, but in the small aperture gear machining, still exist some challenges.

[0003] Small aperture gear due to its aperture is small, in the machining process, the traditional machining fixture is difficult to realize accurate positioning and clamping, is easy to lead to the coaxiality of clamping axis and gear axis to be difficult to guarantee, in addition, under the action of machining force, gear end face is also easy to appear the jumping phenomenon, influence gear machining precision, make the product quality of processing unstable.

[0004] Therefore, provide a kind of accurate positioning and clamping, suitable for the machining fixture of small aperture gear for the machining of small aperture gear, improve the machining precision and quality stability of small aperture gear has important significance. SUMMARY

[0005] Therefore, the utility model provides a kind of accurate positioning and clamping, suitable for the gear machining fixture of small aperture gear.

[0006] In order to realize the above-mentioned goal, the utility model provides the following technical scheme:

[0007] The utility model provides a gear processing fixture, including the fixture base, be provided with the taper body on the fixture base, the taper body includes taper body fixed part and taper body, taper body fixed part with the detachable connection of fixture base, the taper body includes extension section and taper section, the diameter of extension section is less than the diameter of taper body fixed part, the outer circumferential surface of taper section is the outer taper surface of gradually smaller diameter, be provided with the locating disc on the taper body, the locating disc includes locating disc fixed part and locating part, locating disc fixed part with taper body fixed part detachable connection, the locating part is located in the taper section of taper body, is used for positioning and supporting gear, be provided with the cavity between locating disc and taper body, is used for installing elastic expansion sleeve, the elastic expansion sleeve includes elastic expansion sleeve fixed part, connecting part and expansion sleeve part, connecting part is located between elastic expansion sleeve fixed part and expansion sleeve part, is used for connecting elastic expansion sleeve fixed part and expansion sleeve part, elastic expansion sleeve fixed part is set up in the extension section of taper body, expansion sleeve part sets up in the taper section of taper body, the inner wall is conical, and cooperates with the taper section of taper body, the fixed hole of cooperation with screw line is seted up in the elastic expansion sleeve fixed part on the fixed part of taper body, and the elastic expansion sleeve fixed part is connected with the lower pull rod through the screw and passes through the partition sleeve, the slide groove is seted up in the inside of fixture base, the lower pull rod is slidably installed in the slide groove, still be provided with the limit pin on the lower pull rod, is used for limiting lower pull rod.

[0008] The utility model discloses the gear processing fixture utilizes the locating disc to position and support gear, drives elastic expansion sleeve to move down through the lower pull rod, in the process of moving down, utilizes the taper section of taper body to expand the expansion sleeve part of elastic expansion sleeve and make it to expand gear, realizes the accurate positioning and clamping of small aperture gear, effectively guarantees and controls the coaxial degree and end face runout in the processing of small aperture gear, effectively guarantees the processing accuracy of small aperture gear.

[0009] Preferably, the locating disc fixed part is provided with a fixed hole matched with a screw, and the fixed hole is fixedly connected with the taper body fixed part through a screw.

[0010] Preferably, the taper body comprises a first extension section, a first taper section, a second extension section and a second taper section in sequence, the diameter of the first extension section is less than the diameter of the taper body fixed part, the outer circumferential surface of the first taper section and the second taper section is an outer taper surface with gradually decreasing diameter, the locating part of the locating disc is located on the second taper section, the elastic expansion sleeve fixed part is set outside the first extension section, the diameter of the elastic expansion sleeve fixed part matches the diameter of the first extension section, and the expansion sleeve part is set outside the second taper section and cooperates with the second taper section of the taper body.

[0011] Preferably, the taper body fixed part is provided with a fixed hole matched with a screw, and the fixed hole is fixedly connected with the fixture base through a screw.

[0012] Preferably, the taper body fixing part is further provided with a boss on one side of the clamp base, the boss has an outer diameter smaller than that of the taper body fixing part, the clamp base is provided with a groove corresponding to the boss, and the boss is installed in the groove.

[0013] Preferably, the clamp base, the lower pull rod and the spacer sleeve are made of 40Cr alloy material.

[0014] Preferably, the taper body is made of GcCr15 alloy material.

[0015] Preferably, the positioning disc is made of 20CrMnTi alloy.

[0016] Preferably, the elastic expansion sleeve is made of 60Si2MnA alloy.

[0017] Beneficial effects: the gear machining clamp utilizes the positioning disc to position and support the gear, drives the elastic expansion sleeve to move downward through the lower pull rod, expands the expansion sleeve part of the elastic expansion sleeve through the taper surface of the taper body in the moving process, and realizes accurate positioning and clamping of the small-aperture gear, effectively guarantees and controls the coaxiality and end face runout in the small-aperture gear machining process, and effectively guarantees the machining precision of the small-aperture gear. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 it is a sectional structure schematic view of the gear machining clamp;

[0019] Fig. 2 it is a sectional structure schematic view of the taper body;

[0020] Fig. 3 it is a sectional structure schematic view of the elastic expansion sleeve;

[0021] Fig. 4 it is a sectional structure schematic view of the positioning disc.

[0022] Mark explanation: gear 1, elastic expansion sleeve 2, expansion sleeve part 21, connecting part 22, elastic expansion sleeve fixing part 23, fixing hole 24, positioning disc 3, positioning disc fixing part 31, positioning part 32, fixing hole 33, taper body 4, taper body fixing part 41, boss 42, first extension section 43, first taper surface section 44, second extension section 45, second taper surface section 46, fixing hole 47, spacer sleeve 5, clamp base 6, sliding groove 61, groove 62, lower pull rod 7, limit pin 71, screw 8, screw 9, screw 10. DETAILED DESCRIPTION

[0023] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0024] As shown in Figs. 1 to 4 The utility model provides a gear processing fixture, including fixture base 6, be provided with taper body 4 on the fixture base 6, the taper body 4 includes taper body fixed part 41 and taper body, taper body fixed part 41 with the detachable connection of fixture base 6, the taper body includes extension section and taper section, the diameter of extension section is less than the diameter of taper body fixed part 41, the outer circumferential surface of taper section is gradually smaller outer taper surface of diameter, be provided with locating disc 3 on the taper body, the locating disc 3 includes locating disc fixed part 31 and locating part 32, locating disc fixed part 31 with taper body fixed part 41 detachable connection, the locating part 32 is located in taper section of taper body, for positioning and supporting gear, be provided with cavity between locating disc 3 and taper body, for installing elastic expansion sleeve, the elastic expansion sleeve 2 includes elastic expansion sleeve fixed part 23, connecting part 22 and expansion sleeve part 21, connecting part 22 is located between elastic expansion sleeve fixed part 23 and expansion sleeve part 21, for connecting elastic expansion sleeve fixed part 23 and expansion sleeve part 21, the elastic expansion sleeve fixed part 23 is set up in the extension section of taper body, the expansion sleeve part 21 is set up in taper section of taper body, and the inner wall is conical, and is matched with taper section of taper body, the fixed part 41 of taper body is provided with spacer 5, the fixed hole 24 that is cooperated with screw line is seted up on the elastic expansion sleeve fixed part 23, the elastic expansion sleeve fixed part 23 is connected with lower pull rod 7 through the screw 9 and passes through spacer 5, the inside of fixture base 6 is provided with sliding slot 61, lower pull rod 7 is slidably installed in sliding slot 61, still be provided with limit pin 71 on lower pull rod 7, for limiting lower pull rod 71.

[0025] The utility model discloses gear processing fixture utilizes locating disc 3 and supports gear 1, drives elastic expansion sleeve 2 to move down through lower pull rod 7, during moving down, utilizes the expansion of elastic expansion sleeve's expansion sleeve part 21 of taper body 4 and makes it tight gear 1, realizes the accurate positioning and clamping of small aperture gear, effectively guarantees and controls the coaxiality and end face runout in the processing of small aperture gear, effectively guarantees the machining accuracy of small aperture gear.

[0026] In one embodiment, the locating disc fixed part 31 is provided with a fixed hole 33 that is cooperated with a screw, and the taper body fixed part 41 is fixedly connected with the screw.

[0027] In one embodiment, the tapering body comprises in sequence a first extension section 43, a first tapering section 44, a second extension section 45, and a second tapering section 46, the diameter of the first extension section 43 being smaller than the diameter of the tapering body fixing section 41, the outer circumferential surface of the first tapering section 44 and the second tapering section 46 being outer tapering surfaces with gradually decreasing diameters; the positioning section 32 of the positioning disc 3 is positioned at the second tapering section 46; the elastic expansion sleeve fixing section 23 is sleeved outside the first extension section 43 and has a diameter matching that of the first extension section 43, and the expansion sleeve section 21 is sleeved outside the second tapering section 46 and cooperates with the second tapering section 46.

[0028] In one embodiment, the tapering body fixing section 41 is provided with fixing holes 47 matching the screw row, and the tapering body fixing section 41 is fixedly connected with the clamp base 6 through the screw 10.

[0029] In one embodiment, the tapering body fixing section 41 is further provided with a boss 42 on the side facing the clamp base 6, the outer diameter of the boss 42 being smaller than the outer diameter of the tapering body fixing section 41, and the clamp base 6 is provided with a groove 62 at a corresponding position matching the boss 42, and the boss 42 is installed in the groove 62.

[0030] In one embodiment, the clamp base 6, the lower pull rod 7, and the spacer 5 are made of 40Cr alloy material.

[0031] In one embodiment, the tapering body 4 is made of GcCr15 alloy material.

[0032] In one embodiment, the positioning disc 3 is made of 20CrMnTi alloy.

[0033] In one embodiment, the elastic expansion sleeve 2 is made of 60Si2MnA alloy.

[0034] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A gear processing fixture, characterized in that: The tool is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone body to form a circle, and the fixing portion is connected with the fixing portion of the cone The elastic expansion sleeve includes an elastic expansion sleeve fixing part, a connecting part and an expansion sleeve part. The connecting part is located between the elastic expansion sleeve fixing part and the expansion sleeve part, and is used to connect the elastic expansion sleeve fixing part and the expansion sleeve part. The elastic expansion sleeve fixing part is sleeved outside the extension section of the tapered body, and the expansion sleeve part is sleeved outside the conical surface section of the tapered body. The inner wall is conical and cooperates with the conical surface section of the tapered body; a spacer is provided on the fixing part of the tapered body, and a fixing hole cooperating with a screw row is provided on the elastic expansion sleeve fixing part, and the elastic expansion sleeve fixing part is connected to the lower pull rod by screws passing through the spacer; a slide groove is provided inside the clamp base, and the lower pull rod is slidably installed in the slide groove, and a limiting pin is also provided on the lower pull rod for limiting the lower pull rod.

2. The gear processing fixture according to claim 1, characterized in that: The positioning plate fixing portion is provided with fixing holes matched with the screw rows, and is fixedly connected to the tapered body fixing portion through the screws.

3. The gear processing fixture according to claim 1, characterized in that: The conical body includes a first extension section, a first conical surface section, a second extension section, and a second conical surface section in sequence. The diameter of the first extension section is smaller than the diameter of the conical body fixing portion. The outer circumferences of the first conical surface section and the second conical end surface section are both outer conical surfaces with gradually decreasing diameters. The positioning portion of the positioning plate stops at the second conical surface section. The elastic expansion sleeve fixing portion is sleeved outside the first extension section, and its diameter matches the diameter of the first extension section. The expansion sleeve portion is sleeved outside the second conical surface section and cooperates with the second conical surface section of the conical body.

4. The gear processing fixture according to claim 1, characterized in that: The tapered body fixing portion is provided with fixing holes matched with screws, and is fixedly connected to the fixture base via screws.

5. The gear processing fixture according to claim 1, characterized in that: A boss is further provided on the side of the tapered body fixing portion facing the fixture base, the outer diameter of the boss is smaller than the outer diameter of the tapered body fixing portion, and a groove cooperating therewith is provided at a corresponding position on the fixture base, and the boss is installed in the groove.

6. The gear processing fixture according to claim 1, characterized in that: The clamp base, the lower pull rod and the spacer are made of 40Cr alloy material.

7. The gear processing fixture according to claim 1, characterized in that: The tapered body is made of GcCr15 alloy material.

8. The gear processing fixture according to claim 1, characterized in that: The positioning plate is made of 20CrMnTi alloy.

9. The gear processing fixture according to claim 1, characterized in that: The elastic expansion sleeve is made of 60Si2MnA alloy.

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