Synchronizer gear sleeve machining tool

Abstract

The utility model discloses a synchronizer gear sleeve machining tool, which relates to the technical field of machining tools and comprises a gear broach, one end of the gear broach is in threaded connection with a tool apron, one side of the tool apron is connected with a power mechanism, a cavity is arranged in the tool apron, and a damping spring and a damper are fixedly connected between two side walls of the cavity. Due to the fact that the damping springs and the dampers are arranged on the side wall of the cavity, vibration generated during machining can be evenly transmitted to the damping springs and the dampers, when cutting force enables the tool apron to vibrate and generate displacement, the damping springs and the dampers generate corresponding damping force according to the vibration speed of the tool apron, the cutting force is evenly dispersed, and the machining precision is improved. The tool apron can restore to the preset position after being vibrated by cutting force, the stability of the cutting edge of the gear broach is guaranteed, the problems of tooth profile errors, size deviation and the like caused by vibration, tool deviation and other factors are reduced, and therefore the accuracy of a synchronizer gear sleeve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to processing cutter technical field, concretely is a kind of synchronizer gear sleeve processing cutter. BACKGROUND

[0002] In modern mechanical manufacturing industry, synchronizer is the key component of transmission system such as automobile transmission, and the quality and precision of synchronizer gear sleeve as the core component of synchronizer directly affect the performance of synchronizer, so the precision requirement of synchronizer gear sleeve is higher, and the cutting force generated during processing due to lack of buffer and stabilizing mechanism in existing cutter can cause the vibration of cutter, to cause the relative position between cutting edge and tooth blank unstable, this instability can make the gear tooth profile error, such as tooth profile asymmetry, uneven pitch, etc., to further affect the precision of gear sleeve.

[0003] Therefore, we design a kind of synchronizer gear sleeve processing cutter to solve the above problems. INVENTION CONTENTS

[0004] The utility model is aimed at providing a kind of synchronizer gear sleeve processing cutter to solve the problems raised in the above background.

[0005] To solve the above technical problems, the utility model provides a kind of synchronizer gear sleeve processing cutter, including gear broach, the gear broach one end is connected with the cutter holder, the cutter holder one side is connected with power mechanism, the cavity is set in the cutter holder interior, damping spring and damper are fixedly connected between the cavity two side walls, the damping spring is sleeved on damper, the damping spring and damper are annular array distribution on the side wall of cavity, gear blank is equipped on the side of gear broach away from cutter holder.

[0006] Further, the cavity two side walls are fixedly connected with hinge seat, the hinge seat is hinged with first connecting rod and second connecting rod, the first connecting rod is rotatably connected with second connecting rod.

[0007] Further, reset spring is fixedly connected between the first connecting rod and the second connecting rod.

[0008] Further, the number of the first connecting rod, the second connecting rod and the reset spring is two, and the two reset springs are fixedly connected between two pairs of first connecting rod and second connecting rod.

[0009] Further, the side of cutter holder away from gear broach is equipped with support, the power mechanism includes hydraulic cylinder, the hydraulic cylinder is installed at the top of support, the piston rod of hydraulic cylinder is fixedly connected with cutter holder, the side of gear broach away from cutter holder is equipped with positioning plate, the positioning plate is fixedly connected with sleeve, and the tooth blank is sleeved with sleeve.

[0010] Further, the slide plate is fixedly connected with the knife seat.

[0011] Further, the guide rod is fixedly connected with the support and the positioning plate on opposite sides, penetrates through the slide plate and is in sliding connection with the slide plate.

[0012] Further, the knife seat is made of alloy steel.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1. The damping spring and the damper are arranged on the side wall of the cavity, and the vibration generated during machining can be uniformly transmitted to the damping spring and the damper. When the cutting force causes the knife seat to vibrate and displace, the damping spring and the damper generate corresponding damping force according to the vibration speed of the knife seat, and the cutting force is uniformly dispersed, so that the knife seat can recover to the preset position after being vibrated by the cutting force, the stability of the gear broach cutting edge is ensured, the problems of tooth profile error, size deviation and the like caused by vibration, tool deviation and the like are reduced, and the accuracy of the synchronizer gear sleeve is improved.

[0015] 2. When the knife seat is vibrated, the first connecting rod and the second connecting rod will relatively rotate. In this process, the reset spring will be stretched or compressed to generate elastic force in the opposite direction of the vibration direction, thereby buffering the vibration and preventing the vibration energy from being directly transmitted to the gear broach, so that the stability of the cutting edge of the gear broach during the cutting process is maintained, and the increase of the roughness of the machined surface of the gear blank or the decrease of the tooth profile accuracy caused by vibration is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structural schematic view of the utility model;

[0017] Figure 2 It is another perspective view of the utility model;

[0018] Figure 3 It is a sectional view of the knife seat of the utility model;

[0019] Figure 4 It is a structural schematic view of the utility model Figure 3 It is an enlarged schematic view of A in the utility model.

[0020] In the figure: 1, gear broach; 2, guide rod; 3, gear blank; 4, sleeve; 5, positioning plate; 6, support; 7, hydraulic cylinder; 8, knife seat; 9, slide plate; 10, cavity; 11, damper; 12, damping spring; 13, hinge seat; 14, first connecting rod; 15, reset spring; 16, second connecting rod. DETAILED DESCRIPTION

[0021] 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 of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0022] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a synchronizer gear sleeve processing tool, including gear broach 1, gear broach 1 one end is threadedly connected with tool holder 8, tool holder 8 one side is connected with power mechanism, cavity 10 is set in tool holder 8 inside, damping spring 12 and damper 11 are fixedly connected between the two side walls of cavity 10, damping spring 12 is set on damper 11, damping spring 12 and damper 11 are annular array distribution on the side wall of cavity 10, vibration generated during processing can be evenly transmitted to each damping spring 12 and damper 11, avoid that tool holder 8 partial force is too large and affect stability, gear broach 1 is provided with tooth blank 3 on the side away from tool holder 8.

[0023] When being implemented, tool holder 8 is moved to tooth blank 3 direction by starting power mechanism, since gear broach 1 is threadedly connected with tool holder 8, the movement of tool holder 8 drives gear broach 1 gradually close to tooth blank 3 and start cutting processing, when tool holder 8 vibrates and generates displacement due to cutting force, damping spring 12 and damper 11 generate damping force according to the vibration speed of tool holder 8, this damping force is proportional to vibration speed, direction is opposite to vibration direction, and evenly disperses cutting force, so that tool holder 8 restores to preset position when vibrating due to cutting force, maintains the cutting edge stability of gear broach 1, to improve processing precision.

[0024] Please refer to Figure 4 As shown in the figure, both side walls of cavity 10 are fixedly connected with hinge base 13, hinge base 13 is hingedly connected with first connecting rod 14 and second connecting rod 16, first connecting rod 14 and second connecting rod 16 are rotatably connected through pivot, form a deformable connecting rod mechanism, tool holder 8 generates displacement due to vibration, first connecting rod 14 and second connecting rod 16 relatively rotate, disperse local direction vibration, reduce the possibility that tool holder 8 is damaged or affect gear broach 1 processing precision due to uneven force, improve the stability of gear broach 1 when moving.

[0025] Please refer to Figure 4The first connecting rod 14 and the second connecting rod 16 are fixedly connected with the reset spring 15, when the first connecting rod 14 and the second connecting rod 16 rotate, the reset spring 15 is stretched or compressed, the vibration brought by the gear broach 1 is buffered, when the vibration is weakened or disappears, the reset spring 15 restores to make the first connecting rod 14 and the second connecting rod 16 return to the initial state, so that the relative position accuracy between the gear broach 1 and the blank 3 is maintained.

[0026] Referring to Figure 4 The first connecting rod 14, the second connecting rod 16 and the reset spring 15 are two in number, and the two reset springs 15 are fixedly connected between the two pairs of first connecting rod 14 and second connecting rod 16, by increasing the number of connecting rods and springs, the inside of the tool holder 8 is supported and stress adjusted from multiple directions and positions, the position accuracy and processing quality consistency of the gear broach 1 are maintained.

[0027] Referring to Figure 1 And Figure 2 The tool holder 8 away from the gear broach 1 side is provided with a support 6, the power mechanism includes a hydraulic cylinder 7, the hydraulic cylinder 7 is installed on the top of the support 6, the hydraulic cylinder 7 is connected with the hydraulic pump through the control valve, the piston rod of the hydraulic cylinder 7 is fixedly connected with the tool holder 8, the gear broach 1 away from the tool holder 8 side is provided with a positioning plate 5, the positioning plate 5 is fixedly connected with a sleeve 4, the blank 3 is sleeved with the sleeve 4, the sleeve 4 provides radial positioning for the blank 3, maintains the relative position relationship between the blank 3 and the gear broach 1, by starting the hydraulic cylinder 7, the piston rod drives the gear broach 1 to move and then processes the blank 3, and the processing position can be adjusted, the tool holder 8 is fixedly connected with a sliding plate 9, the sliding plate 9 is provided with guide holes on both sides, the support 6 and the positioning plate 5 opposite side is fixedly connected with a guide rod 2, the guide rod 2 penetrates through the sliding plate 9 and is slidably connected with the sliding plate 9 through the guide hole, can constrain the movement direction of the tool holder 8, so that it can only move linearly along the guide rod 2, improves the accuracy and stability of the tool movement, referring to Figure 3 The tool holder 8 is made of alloy steel material, which can withstand the large cutting force and friction force generated during the processing of the gear broach 1, prolongs the service life of the tool.

[0028] Working principle:

[0029] In use, first install the blank 3 in the sleeve 4, complete the radial positioning and preliminary fixation of the blank 3, and keep the initial relative position with the gear broach 1. When the machining operation is needed, through the control valve connected with the hydraulic cylinder 7, the piston rod is extended under the hydraulic oil pressure in the hydraulic cylinder 7, the gear broach 1 is pushed to move along the linear direction defined by the guide rod 2 to the blank 3 and cutting is carried out, gradually removing the excess material on the blank 3 to form the required tooth profile of the synchronizer gear sleeve. The cutting force generated during the machining process acts on the gear broach 1 and is transmitted to the tool holder 8. When the tool holder 8 vibrates and displaces, the damping spring 12 and the damper 11 generate damping force according to the vibration speed of the tool holder 8. The direction of the damping force is always opposite to the vibration direction and the size is proportional to the vibration speed, so that the tool holder 8 returns to the preset position when it vibrates under the cutting force. The first connecting rod 14 and the second connecting rod 16 connected by the hinge seat 13 in the cavity 10 of the tool holder 8 also relatively rotate under the action of the cutting force, thereby stretching the reset spring 15 to buffer the vibration transmitted by the gear broach 1. When the vibration in the cutting process weakens or disappears, the reset spring 15 restores the first connecting rod 14 and the second connecting rod 16 to the initial state by its own elastic restoring force, maintains the stability of the cutting edge of the gear broach 1, and thus improves the machining precision.

[0030] After the machining is completed, the hydraulic cylinder 7 is operated again through the control valve, so that the piston rod drives the tool holder 8 and the gear broach 1 to return to the initial position, preparing for the next machining.

Claims

1. A synchronizer ring gear sleeve machining tool comprising a gear broach (1), characterized in that, The gear broach (1) is screw connected with a cutter holder (8) at one end, the cutter holder (8) is connected with a power mechanism at one side, the cutter holder (8) is internally provided with a cavity (10), the cavity (10) is fixedly connected with a damping spring (12) and a damper (11) between the two side walls, the damping spring (12) is sleeved on the damper (11), the damping spring (12) and the damper (11) are annularly arranged on the side wall of the cavity (10), and the gear broach (1) is provided with a blank (3) on the side away from the cutter holder (8).

2. A synchronizer ring gear sleeve machining tool as in claim 1, characterized in that: The cavity (10) is fixedly connected with a hinge seat (13) on both sides, the hinge seat (13) is hingedly connected with a first connecting rod (14) and a second connecting rod (16), and the first connecting rod (14) and the second connecting rod (16) are rotatably connected.

3. A synchronizer ring gear sleeve machining tool as in claim 2, characterized in that: The first connecting rod (14) and the second connecting rod (16) are fixedly connected with a reset spring (15).

4. A synchronizer ring gear sleeve machining tool as in claim 3, characterized in that: The number of the first connecting rod (14), the second connecting rod (16) and the reset spring (15) is two, and the two reset springs (15) are fixedly connected between the two pairs of first connecting rods (14) and second connecting rods (16).

5. A synchronizer ring gear sleeve machining tool as in claim 1, characterized in that: The cutter holder (8) is provided with a support (6) on the side away from the gear broach (1), the power mechanism comprises a hydraulic cylinder (7), the hydraulic cylinder (7) is installed at the top of the support (6), the piston rod of the hydraulic cylinder (7) is fixedly connected with the cutter holder (8), the gear broach (1) is provided with a positioning plate (5) on the side away from the cutter holder (8), the positioning plate (5) is fixedly connected with a sleeve (4), and the blank (3) is sleeved with the sleeve (4).

6. A synchronizer ring gear sleeve machining tool as in claim 5, characterized in that: The cutter holder (8) is fixedly connected with a sliding plate (9).

7. A synchronizer ring gear sleeve machining tool as in claim 5, characterized in that: The support (6) and the positioning plate (5) are fixedly connected with a guide rod (2) on the opposite sides, the guide rod (2) penetrates through the sliding plate (9) and is slidably connected with the sliding plate (9).

8. A synchronizer ring gear sleeve machining tool as in claim 6, characterized in that: The cutter holder (8) is made of alloy steel.

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