Broaching device for internal spline of half axle gear

Abstract

The utility model relates to the technical field of half axle gear internal spline machining, and particularly discloses a half axle gear internal spline broaching device which comprises a flange plate, an inwards-concave spherical groove is formed in the front side face, away from the front side face matched with a broaching machine, of the flange plate, and a spherical positioning piece is movably clamped in the inwards-concave spherical groove correspondingly. The front side of the spherical surface positioning piece is correspondingly provided with a positioning tooth groove matched and attached to the rear side of the gear face of the half axle gear, the rear end of the outer side of the flange plate is correspondingly and fixedly provided with a synchronous rotation driving assembly, and the front end of the outer side of the flange plate is evenly distributed and fixedly provided with reciprocating assemblies in the circumferential direction; the internal spline broaching device has the beneficial effects that synchronous driving movement is facilitated for multi-point fixation, the side faces and the front faces of the gear faces are conveniently subjected to multi-face pressing fixation, positioning fixation is stable and firm, convenience is provided for broaching operation of internal splines of half axle gears, and the internal spline broaching device is suitable for large-scale popularization and application. And the use requirements can be well met.

Description

Technical Field

[0001] This utility model relates to the field of internal spline machining technology for half-shaft gears, specifically a broaching device for internal splines of half-shaft gears. Background Technology

[0002] The half-shaft gear is an important component of the automobile differential. The spline in the inner hole of the half-shaft gear is an important connection structure between the drive shaft and the half-shaft gear. Its machining accuracy is particularly important. If the machining accuracy is insufficient, the runout of the differential half-shaft gear ring relative to the spline in the half-shaft gear will not meet the usage requirements.

[0003] In traditional horizontal broaching machines, differential half-shaft gears are positioned using the mounting plane and inner hole of the differential half-shaft gear before broaching. This involves aligning the mounting plane of the differential half-shaft gear with the flange plane. However, the flange is typically a planar structure. Because the flange plane cannot be perfectly perpendicular to the broaching machine's centerline, and the diameter of the broach guide is clearance-fitted with the gear's inner hole, the runout of the half-shaft gear relative to the spline is difficult to guarantee during broaching. This fails to meet the technical requirement of using spline positioning to detect the runout of the gear ring after broaching the spline.

[0004] Existing patent application CN201922490143.6 discloses a broaching device for an internal spline of a half-shaft gear. It includes a flange, the surface of which away from the broaching machine is a concave spherical surface. The spherical surface on the flange is adapted to a first spherical surface on a spherical positioning member. The surface of the spherical positioning member opposite to the first spherical surface is a second spherical surface. A fixing member is adapted to the second spherical surface of the spherical positioning member, and the fixing member is fixedly connected to the flange, forming a space between the fixing member and the flange for the spherical positioning member to rotate. Positioning teeth are provided on the second spherical surface, and these teeth are fully engaged with the tooth surface of the gear to be processed. A through hole with clearance fit to the broaching guide of the broaching machine is provided in the middle of the spherical positioning member. By setting a double-spherical spherical positioning component between the flange and the workpiece, the spherical positioning component can be adjusted on the inwardly concave spherical surface of the flange, ensuring that the centerline of the positioning component is concentric with the broaching centerline of the broaching machine. This guarantees that the runout of the differential half-shaft gear ring relative to the internal spline meets technical requirements during broaching of the internal spline. The spherical positioning component is detachable, and during machining, it can be replaced according to the tooth surface shape of the gear to be machined, ensuring that the positioning tooth surface of the spherical positioning component is fully engaged with the tooth surface of the gear to be machined, thus guaranteeing positioning accuracy. However, it still has the following technical defects:

[0005] The prior art device needs to be fixed by bolts one by one when positioning and fixing the gear face of the half axle gear, is inconvenient for synchronous driving movement for multi-point fixing, and is inconvenient for multi-surface compression and fixing of the side surface and the front surface of the gear face, the positioning and fixing is still not stable and firm, is not conducive to broaching operation of the inner spline of the half axle gear, and cannot well meet the use requirement, therefore, a half axle gear inner spline broaching device is provided. Utility model content

[0006] In order to effectively solve the problems in the background art and overcome the technical defects in the prior art, the utility model provides the following technical scheme:

[0007] A half axle gear inner spline broaching device, including a flange plate, the flange plate is provided with an inner concave spherical groove away from the front side surface matched with the broaching machine, the inner concave spherical groove is correspondingly movably clamped with a spherical positioning piece, the front side of the spherical positioning piece is correspondingly provided with a positioning tooth groove matched with the rear side of the gear face of the half axle gear, the rear end of the outer side of the flange plate is correspondingly fixedly installed with a synchronous rotation driving assembly, the front end of the outer side of the flange plate is fixedly installed with a reciprocating assembly distributed averagely along the circumferential direction, and the front end of the reciprocating assembly is fixedly installed with a downward pressing fixing assembly corresponding to the gear face.

[0008] As a preferred technical scheme of the utility model, the synchronous rotation driving assembly comprises a fixed ring, a bevel gear ring, a gear ring, a fixed frame, a driving gear, a rotating shaft and a knob one, the fixed ring is rotatably connected to the rear end of the outer side of the flange plate through a bearing, the front side of the fixed ring is fixedly installed with the bevel gear ring, the outer side of the fixed ring is fixedly installed with the gear ring, the fixed frame is fixedly installed along the rear end edge of the outer side of the flange plate, the front side of the fixed frame is rotatably connected with the rotating shaft through a bearing, the front end of the rotating shaft is fixedly connected with the center of the rear side of the driving gear, the driving gear is correspondingly engaged with the gear ring, and the rear end of the rotating shaft extending to the rear of the fixed frame is fixedly connected with the center of the front side of the knob one.

[0009] As a preferred technical scheme of the utility model, the reciprocating assembly comprises a fixed frame, a lead screw, a bevel gear and a movable rod, the fixed frame is fixedly installed at the front end of the outer side of the flange plate, the lead screw is rotatably connected between the inner and outer sides of the inner wall in the fixed frame through a bearing, the lead screw is screwedly connected with the threaded hole in the side rear end of the movable rod, the rear end of the outer side of the movable rod is slidably connected with the inner wall of the fixed frame, the outer end of the lead screw extending to the outer side of the fixed frame is fixedly connected with the center of the inner side of the bevel gear, and the bevel gear is correspondingly engaged with the bevel gear ring.

[0010] As a preferred technical scheme of the utility model, the lower pressing fixed component contains fixed plate, knob two, screw rod and lower pressing block, the fixed plate is fixedly installed at the front end of the movable rod, the screw rod is in threaded connection with the threaded hole of the side of the fixed plate, the rear end of the screw rod at the rear side of the fixed plate is fixedly installed with the lower pressing block which can be in contact and pressing fixed with the front side of the gear face, the front end of the screw rod at the front side of the fixed plate is fixedly connected with the center of the rear side of knob two.

[0011] As a preferred technical scheme of the utility model, the movable rod is fixedly installed with auxiliary pressing rod at the inner side, the inner side end of the auxiliary pressing rod is fixedly installed with auxiliary pressing block which can be in contact and pressing fixed with the outer side of the gear face.

[0012] As a preferred technical scheme of the utility model, the front end of the inner concave spherical surface groove inner wall is evenly distributed with auxiliary positioning groove in the circumferential direction, the outer side of the spherical positioning piece is evenly distributed with auxiliary positioning block which is movably connected with the auxiliary positioning groove in the circumferential direction.

[0013] Compared with the prior art, the utility model has the advantages that the half shaft gear inner spline broaching device is reasonable in structure, convenient to operate, and convenient for synchronous driving movement for multi-point fixing when positioning and fixing the gear face of the half shaft gear, and convenient for multi-surface pressing and fixing of the side surface and the front surface of the gear face, stable and firm positioning and fixing, convenient for half shaft gear inner spline broaching operation, and good in meeting use requirement, specifically, the rear side of the gear face of the half shaft gear is clamped and limited through the positioning tooth groove, a plurality of reciprocating assemblies can be synchronously rotated and driven through synchronous rotation driving assembly, a plurality of lower pressing fixed components can be moved to the front of the front side of the gear face through the plurality of reciprocating assemblies, the front side of the gear face is fixedly contacted and pressed through the plurality of lower pressing fixed components, the outer side of the gear face can be synchronously contacted and pressed through the plurality of auxiliary pressing rods and the plurality of auxiliary pressing blocks, the auxiliary positioning groove and the auxiliary positioning block are movably connected, and the auxiliary positioning and guiding and limiting can be realized when the spherical positioning piece and the inner concave spherical surface groove are clamped and installed. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the structure schematic view of the utility model.

[0015] Figure 2 It is the split structure schematic view of the utility model.

[0016] Figure 3 It is the structure schematic view of the flange plate of the utility model.

[0017] Figure 4The utility model discloses a spherical positioning piece's structure schematic drawing.

[0018] Figure 5 The utility model discloses a gear surface's structure schematic drawing.

[0019] Figure 6 The utility model discloses a fixed ring's structure schematic drawing.

[0020] Figure 7 The utility model discloses a synchronous rotation drive assembly's partial structure schematic drawing.

[0021] Figure 8 The utility model discloses a reciprocating assembly and down -press fixed assembly's structure schematic drawing.

[0022] Figure 9 The utility model discloses a reciprocating assembly and down -press fixed assembly's side view.

[0023] In the drawing: flange plate 1, inner concave spherical surface groove 2, spherical positioning piece 3, positioning tooth groove 4, gear surface 5, gear shaft 6, synchronous rotation drive assembly 7, fixed ring 71, bevel gear ring 72, gear ring 73, fixed frame 74, driving gear 75, rotating shaft 76, knob one 77, reciprocating assembly 8, fixed frame 81, lead screw 82, bevel gear 83, movable rod 84, down -press fixed assembly 9, fixed plate 91, knob two 92, screw rod 93, down -pressing block 94, auxiliary compression rod 10, auxiliary compression block 11, auxiliary positioning groove 12, auxiliary positioning block 13. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0025] Please refer to Figures 1-9 The utility model provides a kind of technical solutions: a broaching device of half shaft gear internal spline, including flange plate 1, inner concave spherical surface groove 2 is set in the front side of flange plate 1 away from with broaching machine cooperation, spherical positioning piece 3 is movably clamped in inner concave spherical surface groove 2, the rear side of the gear surface 5 of half shaft gear is adapted to the positioning tooth groove 4 of the front side of spherical positioning piece 3 and is pasted, the rear side of the gear surface 5 of half shaft gear is clamped and positioned by positioning tooth groove 4, synchronous rotation drive assembly 7 is fixedly installed on the rear end of the outside of flange plate 1, reciprocating assembly 8 is fixedly installed on the front end of the outside of flange plate 1 and is evenly distributed along the circumferential direction, down -press fixed assembly 9 can be installed on the front end of reciprocating assembly 8 with gear surface 5.

[0026] Further, as shown in Figure 6 and 7 , the synchronous rotation driving assembly 7 comprises a fixed ring 71, a bevel gear ring 72, a gear ring 73, a fixed frame 74, a driving gear 75, a rotating shaft 76 and a knob 77, the fixed ring 71 is rotatably connected to the rear end of the outer side of the flange plate 1 through a bearing, the front side of the fixed ring 71 is fixedly installed with the bevel gear ring 72, the outer side of the fixed ring 71 is fixedly installed with the gear ring 73, the fixed frame 74 is fixedly installed on the rear end of the outer side of the flange plate 1, the front side of the fixed frame 74 is rotatably connected with the rotating shaft 76 through a bearing, the front end of the rotating shaft 76 is fixedly connected with the center of the rear side of the driving gear 75, the driving gear 75 is engaged with the gear ring 73, the rotating shaft 76 is fixedly connected with the center of the front side of the knob 77, which extends to the rear end behind the fixed frame 74, by twisting the knob 77, the rotation of the rotating shaft 76 and the driving gear 75 is driven, and then the rotation of the gear ring 73 is driven, which can drive the rotation of the fixed ring 71 and the bevel gear ring 72, so that the synchronous rotation of the bevel gears 83 on the plurality of reciprocating assemblies 8 can be driven.

[0027] Further, as shown in Figure 8 , the reciprocating assembly 8 comprises a fixed frame 81, a lead screw 82, a bevel gear 83 and a movable rod 84, the fixed frame 81 is fixedly installed on the front end of the outer side of the flange plate 1, the lead screw 82 is rotatably connected between the inner and outer sides of the inner wall of the fixed frame 81 through a bearing, the lead screw 82 is threadedly connected with the threaded hole of the rear end of the side surface of the movable rod 84, the rear end of the outer side of the movable rod 84 is slidingly connected with the inner wall of the fixed frame 81, the lead screw 82 is fixedly connected with the center of the inner side of the bevel gear 83, which extends to the outer end of the outer side of the fixed frame 81, the bevel gear 83 is engaged with the bevel gear ring 72, by the rotation of the bevel gear ring 72, the rotation of the bevel gear 83 is driven, and then the rotation of the lead screw 82 is driven, which can drive the reciprocating movement of the movable rod 84.

[0028] Further, as shown in Figure 8 , the pressing fixed assembly 9 comprises a fixed plate 91, a knob 92, a screw rod 93 and a pressing block 94, the fixed plate 91 is fixedly installed on the front end of the movable rod 84, the screw rod 93 is threadedly connected with the threaded hole of the side surface of the fixed plate 91, the pressing block 94, which can be in contact and tightly fixed with the front side of the gear surface 5, is fixedly installed on the rear end of the rear side of the screw rod 93 located on the rear side of the fixed plate 91, the front end of the screw rod 93 located on the front side of the fixed plate 91 is fixedly connected with the center of the rear side of the knob 92, by the movement of the movable rod 84, the pressing fixed assembly 9 is moved to the front side of the front side of the gear surface 5, by twisting the knob 92, the rotation and reciprocating movement of the screw rod 93 is driven, which can drive the pressing block 94 to contact and tightly fix the front side of the gear surface 5, specifically, the pressing block 94 can be a rubber block.

[0029] Further, as shown in Figure 9As shown, the inner side of the movable rod 84 is fixedly installed with an auxiliary pressing rod 10, and Figure 8 As shown, the inner side end of the auxiliary pressing rod 10 is fixedly installed with an auxiliary pressing block 11 that can be in contact and pressing fixation with the outer side of the gear surface 5, and through the inward movement of the movable rod 84, the auxiliary pressing rod 10 and the auxiliary pressing block 11 are moved inward, and the outer side of the gear surface 5 is assisted in contact and pressing fixation. Specifically, the auxiliary pressing block 11 can be a rubber block.

[0030] Further, as shown Figure 3 As shown, the front end of the inner concave spherical groove 2 wall is evenly distributed and opened in the circumferential direction to form an auxiliary positioning groove 12, and as shown Figure 4 As shown, the outer side of the spherical positioning piece 3 is evenly distributed and fixedly installed with an auxiliary positioning block 13 that is movably connected with the auxiliary positioning groove 12, and through the movable connection of the auxiliary positioning groove 12 and the auxiliary positioning block 13, it can play an auxiliary positioning guide and limiting role when the spherical positioning piece 3 is connected and installed with the inner concave spherical groove 2.

[0031] Specifically, the spherical positioning piece 3 is provided with a through hole that is in clearance fit with the inner spline hole on the gear surface 5 and the gear shaft 6 and the guiding part gap of the broaching tool, which is a prior art and will not be described in detail here.

[0032] In use:

[0033] The rear side of the gear surface 5 of the half shaft gear is clamped and limited by the positioning tooth groove 4, the rotation of the shaft 76 and the driving gear 75 is driven by twisting the knob one 77, and the rotation of the gear ring 73 is further driven, which can drive the rotation of the fixed ring 71 and the bevel gear ring 72, thereby driving the synchronous rotation of the bevel gears 83 on the plurality of reciprocating assemblies 8, the rotation of the plurality of bevel gears 83 is driven by the rotation of the plurality of bevel gear rings 72, and the rotation of the plurality of lead screws 82 is further driven, which can drive the reciprocating movement of the plurality of movable rods 84, the plurality of downward pressing fixed assemblies 9 are moved to the front of the front side of the gear surface 5 by the movement of the plurality of movable rods 84, the rotation and reciprocating movement of the plurality of screw rods 93 is driven by twisting the plurality of knobs two 92 respectively, which can drive the plurality of downward pressing blocks 94 to contact and press fix the front side of the gear surface 5, the plurality of auxiliary pressing rods 10 and the plurality of auxiliary pressing blocks 11 are moved inward by the inward movement of the plurality of movable rods 84, which can simultaneously assist in contact and pressing fixation of the outer side of the gear surface 5, and through the movable connection of the auxiliary positioning groove 12 and the auxiliary positioning block 13, it can play an auxiliary positioning guide and limiting role when the spherical positioning piece 3 is connected and installed with the inner concave spherical groove 2.

[0034] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A broaching device for a half shaft gear internal spline, comprising a flange plate (1), characterized in that: The flange plate (1) is provided with an inner concave spherical groove (2) on the front side away from the drawbench, a spherical positioning member (3) is movably connected in the inner concave spherical groove (2), a positioning tooth groove (4) is formed on the front side of the spherical positioning member (3) and is adapted to the rear side of the gear surface (5) of the half shaft gear, a synchronous rotation driving assembly (7) is fixedly installed on the rear end of the outer side of the flange plate (1), a reciprocating assembly (8) is fixedly installed on the front end of the outer side of the flange plate (1) and is evenly distributed in the circumferential direction, and a pressing fixing assembly (9) is fixedly installed on the front end of the reciprocating assembly (8) and is adapted to the gear surface (5).

2. The broaching apparatus for a half shaft gear internal spline of claim 1, wherein: The synchronous rotation driving assembly (7) comprises a fixed ring (71), a bevel gear ring (72), a gear ring (73), a fixed frame (74), a driving gear (75), a rotating shaft (76) and a knob (77), the fixed ring (71) is rotatably connected to the rear end of the outer side of the flange plate (1) through a bearing, the front side of the fixed ring (71) is fixedly installed with the bevel gear ring (72), the outer side of the fixed ring (71) is fixedly installed with the gear ring (73), the fixed frame (74) is fixedly installed on the rear end of the outer side of the flange plate (1), the front side of the fixed frame (74) is rotatably connected with the rotating shaft (76) through a bearing, the front end of the rotating shaft (76) is fixedly connected with the center of the rear side of the driving gear (75), the driving gear (75) is engaged with the gear ring (73), and the rear end of the rotating shaft (76) extending to the rear of the fixed frame (74) is fixedly connected with the center of the front side of the knob (77).

3. The broaching apparatus for half shaft gear internal splines of claim 2, wherein: The reciprocating assembly (8) comprises a fixed frame (81), a lead screw (82), a bevel gear (83) and a movable rod (84), the fixed frame (81) is fixedly installed on the front end of the outer side of the flange plate (1), the lead screw (82) is rotatably connected between the inner and outer sides of the inner wall of the fixed frame (81), the lead screw (82) is threadedly connected with the threaded hole of the rear end of the side surface of the movable rod (84), the rear end of the outer side of the movable rod (84) is slidingly connected with the inner wall of the fixed frame (81), the lead screw (82) extending to the outer side of the fixed frame (81) is fixedly connected with the center of the inner side of the bevel gear (83), and the bevel gear (83) is engaged with the bevel gear ring (72).

4. The broaching apparatus for half shaft gear internal splines of claim 3, wherein: The pressing fixing assembly (9) comprises a fixed plate (91), a knob (92), a screw rod (93) and a pressing block (94), the fixed plate (91) is fixedly installed on the front end of the movable rod (84), the screw rod (93) is threadedly connected with the threaded hole of the side surface of the fixed plate (91), the pressing block (94) fixedly installed on the rear end of the rear side of the fixed plate (91) can be in contact with the front side of the gear surface (5) for pressing and fixing, and the front end of the screw rod (93) located on the front side of the fixed plate (91) is fixedly connected with the center of the rear side of the knob (92).

5. The broaching apparatus for half shaft gear inner spline of claim 4, wherein: The inner side of the movable rod (84) is fixedly installed with an auxiliary compression rod (10), and the inner end of the auxiliary compression rod (10) is fixedly installed with an auxiliary compression block (11) which can be in contact with the outer side of the gear face (5) for compression fixation.

6. The broaching apparatus for half shaft gear inner spline of claim 1, wherein: The front end of the inner concave spherical groove (2) is evenly distributed with auxiliary positioning grooves (12) in the circumferential direction, and the outer side of the spherical positioning piece (3) is fixedly installed with auxiliary positioning blocks (13) which are movably connected with the auxiliary positioning grooves (12) in the circumferential direction.

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