Fixture for machining tooth groove of gear

Abstract

The utility model relates to a fixture for processing a tooth groove of a gear, which comprises a central cylinder, a plurality of sliding chutes and a plurality of clamping blocks, the inner supporting mechanisms correspond to the sliding grooves in a one-to-one mode, each inner supporting mechanism comprises a fixed plate, a sliding plate, an arc-shaped inner supporting plate and a lifting unit, the sliding plates can partially enter and exit the sliding grooves through horizontal sliding, the sides, exposed out of the sliding grooves, of the sliding plates are fixed to the arc-shaped inner supporting plates, and the two fixed plates are fixed to the two sides of groove openings of the sliding grooves respectively; a first vertical long circular groove is formed in the fixed plate, a second inclined long circular groove is formed in the sliding plate, a first horizontal shaft is fixed to the lifting end of the lifting unit, and a first roller located in the first long circular groove and a second roller located in the second long circular groove are arranged on the first horizontal shaft. The gear clamping device has the advantages that the inner supporting plate capable of stretching out and drawing back in the radial direction is arranged, gears with different inner diameters are internally supported and jacked tightly, the gears are further clamped and fixed in cooperation with the horizontal supporting plate and the pressing plate, the manual operation process is reduced, labor and time are saved, and the applicability is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of machining, especially a kind of fixture for gear tooth slot machining. BACKGROUND

[0002] In the field of gear tooth slot machining, the fixture is usually used to fix the gear to be machined on the lathe turntable, and the gear is positioned to the cutting position by the horizontal rotation of the turntable. In the lathe, the cutter is arranged on one side of the turntable and can move in the vertical direction to cut the gear slot. In the specific operation, the turntable stops after rotating a certain angle each time, the cutter moves down to complete the cutting of the gear slot, and then the turntable continues to rotate to the next position for repeated operation.

[0003] However, the fixture has the following defects:

[0004] The current fixture uses a center shaft matched with the inner diameter of the gear and a jacking bolt to fix the gear. However, the inner diameters of gears of different sizes are different, which requires the center shaft to be disassembled and replaced frequently, which is time-consuming and not conducive to improving efficiency.

[0005] Based on this, the present case is proposed. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims to provide a fixture for gear tooth slot machining to quickly clamp gears with different inner diameters.

[0007] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0008] A fixture for gear tooth slot machining, comprising:

[0009] A center cylinder is provided with a flange plate at the bottom, and a plurality of sliding grooves are formed around the cylinder body.

[0010] The inner support mechanism has a plurality of corresponding sliding grooves, and comprises a fixed plate, a sliding plate, an arc-shaped inner support plate and a lifting unit. The sliding plate has two opposite blocks, and the upper and lower ends are respectively connected with the upper and lower sides of the sliding groove. The sliding plate can partially enter and exit the sliding groove by horizontal sliding. One side of the sliding plate exposed from the sliding groove is fixed with the arc-shaped inner support plate. The fixed plate has two blocks, which are respectively fixed on the two sides of the sliding groove slot. The two fixed plates are respectively located outside the two sliding plates. A vertical long circular groove one is formed on the fixed plate, and an inclined long circular groove two is formed on the sliding plate. The lifting unit is fixed at the bottom of the fixed plate, and the horizontal shaft one penetrating the long circular groove one and the long circular groove two is fixed at the lifting end, and the horizontal shaft one is provided with the roller one located in the long circular groove one and the roller two located in the long circular groove two.

[0011] Further, the arc-shaped inner support plate is fixed with a horizontal support plate at the lower part away from the center cylinder.

[0012] Further, a reinforcing plate is arranged between the bottom surface of the horizontal support plate and the arc-shaped inner support plate.

[0013] Further, a pressing plate is arranged, a through hole is arranged in the center of the pressing plate, the inner wall of the through hole is provided with a thread, and the outer wall of the center column is provided with a thread which can be screwed with the thread of the pressing plate.

[0014] Further, the top surface of the horizontal support plate is smooth and / or coated with a lubricating layer.

[0015] Further, the side surface of the arc-shaped inner support plate away from the center column is provided with an anti-skid rubber layer.

[0016] Further, the bottom surface of the pressing plate is provided with an anti-skid rubber layer.

[0017] Further, a horizontal long circular groove three is arranged on the sliding plate, a roller three is arranged in the long circular groove three, the center of the roller three is provided with a horizontal shaft two, and the two ends of the horizontal shaft two are fixed on the two fixed plates respectively.

[0018] The utility model discloses the advantages are as follows: through setting up the inner support plate of radial telescopic, realize the inner support of different inner diameter gear and tight, cooperate horizontal support plate and pressing plate, further realize the clamping of gear, and the inner support tight can adopt pneumatic or electric realization, reduced manual operation process, save time and effort, and wide applicability. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is the sectional view schematic drawing of the clamp in the embodiment;

[0020] Figure 2 It is the lower view schematic drawing of the clamp in the embodiment;

[0021] Figure 3 It is the side view schematic drawing of the inner support mechanism of the clamp in the embodiment;

[0022] Figure 4 It is the assembly schematic drawing of the lifting unit and horizontal shaft one in the embodiment;

[0023] Figure 5 It is the lower view schematic drawing of the clamp in the embodiment; Figure 3

[0024] Figure 6 It is the state schematic drawing when the clamp clamps gear in the embodiment;

[0025] REFERENCE SIGNS

[0026] ​1, center column; 2, flange plate; 3, sliding groove; 4, fixed plate; 5, sliding plate; 6, arc-shaped inner support plate; 7, lifting unit; 8, long circular groove one; 9, long circular groove two; 10, long circular groove three; 11, horizontal shaft one; 12, roller one; 13, roller two; 14, roller three; 15, horizontal shaft two; 16, horizontal support plate; 17, reinforcing plate; 18, pressing plate; 19, gear to be processed. DETAILED DESCRIPTION

[0027] The utility model will be described in further detail below in combination with examples, and it needs to be understood that the directions or position relations indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like in this article are the directions or position relations based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model in that the indicated devices or elements must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the utility model.

[0028] The embodiment provides a kind of gear tooth slot processing fixture, as shown in Figure Figures 1 to 5 It includes center column 1 and inner support mechanism.The bottom of the center column 1 is provided with a flange plate 2, and a plurality of bolt holes are formed in the flange plate 2 to facilitate the connection and fixation of the fixture with the rotating disc of the processing machine.At the same time, sliding grooves 3 are formed in the front, rear, left and right positions of the column body of the center column 1.

[0029] The number of inner support mechanisms corresponds to the sliding grooves 3, and there are four of them.Taking one of the inner support mechanisms and the sliding grooves 3 as an example, the following description is made.

[0030] The inner support mechanism includes a fixed plate 4, a sliding plate 5, an arc-shaped inner support plate 6 and a lifting unit 7.The sliding plate 5 has two opposite plates, and the upper and lower ends thereof are respectively slidably connected to the upper and lower sides of the sliding groove 3.The sliding connection can be achieved by the track and rail groove method, for example, protruding tracks are provided on the upper and lower sides of the sliding groove 3, and rail grooves are provided on the top surface and bottom surface of the sliding plate 5 to match the tracks.The sliding plate 5 can partially enter and exit the sliding groove 3 through the sliding connection.

[0031] The side of the sliding plate 5 exposed to the sliding groove 3 is fixed to the arc-shaped inner support plate 6.The arc-shaped design of the arc-shaped inner support plate 6 is to fit the inner wall of the gear circle to achieve better inner support and clamping.The fixed plate 4 has two plates, and is respectively fixed to the two sides of the slot of the sliding groove 3.The two fixed plates 4 are respectively located outside the two sliding plates 5. Figure 3 As shown in Figure Figure 1 Long circular groove two 9 is formed on the sliding plate 5 in a diagonal direction.The lifting unit 7 is fixed to the bottom of the fixed plate 4. Figure 4As shown, the lifting end of the lifting unit 7 is fixed with a horizontal shaft 11 penetrating through the long circular groove 1 and the long circular groove 2, and the horizontal shaft 1 is provided with two rollers 12 located in the long circular groove 1 and two rollers 13 located in the long circular groove 2.

[0032] Through the lifting of the lifting unit 7, the rollers 13 are lifted linearly, and during the lifting of the rollers 13, the long circular groove 2 is arranged obliquely, so as to push the sliding plate 5 in and out of the sliding groove 3, so that the arc-shaped inner support plate 6 can tightly abut against the gears with different inner diameters. The lifting of the lifting unit 7 makes the rollers 12 also linearly lift, and through the cooperation of the rollers 12 and the long circular groove 1, the stability of the vertical lifting of the lifting unit 7 is ensured.

[0033] As preferred, the sliding plate 5 is provided with a horizontal long circular groove 3, and the long circular groove 3 is provided with rollers 14, and the center of the rollers 14 is provided with a horizontal shaft 15, and the two ends of the horizontal shaft 15 are fixed on the two fixed plates 4 respectively. When the sliding plate 5 slides in and out of the sliding groove 3, the cooperation of the long circular groove 3 and the rollers 14 ensures the stability of the horizontal sliding of the sliding plate 5.

[0034] In the embodiment, the lower part of the arc-shaped inner support plate 6 away from the center cylinder 1 is fixed with a horizontal support plate 16, and when the gear is placed on the clamp, the horizontal support plate 16 can provide vertical support force for the gear. As preferred, a reinforcing plate 17 is arranged between the bottom surface of the horizontal support plate 16 and the arc-shaped inner support plate 6. When the gear is placed on the clamp, the sliding plate 5 needs to be moved to tightly abut against the gear, and during the movement of the sliding plate 5, the horizontal support plate will rub against the bottom surface of the gear, which affects the sliding stability of the sliding plate 5. In order to reduce the friction, the top surface of the horizontal support plate 16 is smooth and / or coated with a lubricating layer.

[0035] When the arc-shaped inner support plate 6 tightly abuts against the inner wall of the gear, the gear should not rotate or move up and down during the machining process. In order to solve this defect, the pressing plate 18 is added in the embodiment. The center of the pressing plate 18 is provided with a through hole through which the center cylinder 1 passes, and the inner wall of the through hole is provided with a thread, and the outer wall of the center cylinder 1 is provided with a thread which can be screwed with the pressing plate 18. Through the screw connection, when the gear is placed on the clamp and the inner support is tightly abutted, the pressing plate 18 can be screwed in until the pressing plate 18 tightly presses the gear downward, so as to avoid the rotation or up and down movement of the gear. In order to further improve the clamping stability of the clamp, in the embodiment, the side of the arc-shaped inner support plate 6 away from the center cylinder 1 is provided with an anti-skid rubber layer, and the bottom surface of the pressing plate 18 is provided with an anti-skid rubber layer, so as to improve the friction between the arc-shaped inner support plate 6, the pressing plate 18 and the gear.

[0036] The lifting unit 7 in the embodiment can adopt a pneumatic cylinder or an electric cylinder.

[0037] The use process of the clamp is as follows:

[0038] S1. The clamp is fixedly connected with the lathe turntable through the flange 2;

[0039] S2. The pressing plate 18 is screwed out;

[0040] S3. The gear is placed into the clamp, the central cylinder 1 passes through the gear center hole, and the gear bottom surface is supported by the horizontal support plate 16;

[0041] S4. The lifting unit 7 is started, the lifting end of the lifting unit 7 is lifted, the roller one 12 and the roller two 13 are linearly lifted, the roller one 12 and the long circular groove one 8 are matched to realize the vertical lifting guide, the roller two 13 and the long circular groove two 9 are matched to give the sliding plate 5 sliding out of the sliding groove 3, the roller three 14 and the long circular groove three 10 are matched to realize the horizontal movement guide of the sliding plate 5, and finally the arc-shaped inner support plate 6 tightly abuts against the gear center hole inner wall, at this time, the lifting unit 7 is locked;

[0042] S5. The pressing plate 18 is screwed in until the pressing plate 18 tightly presses the gear top surface.

[0043] At this time, the clamping is completed, and the clamp can be rotated to cut the gear slot.

[0044] The above embodiment is only used for explaining the concept of the utility model, and is not limited to the protection of the utility model, and any non-essential change of the utility model by using the concept should fall within the protection scope of the utility model.

Claims

1. A fixture for machining gear tooth grooves, characterized in that, include: A central cylinder with a flange at its bottom and multiple grooves around its circumference. The system includes multiple internal support mechanisms, each corresponding to a slide groove. Each internal support mechanism comprises a fixed plate, a sliding plate, an arc-shaped internal support plate, and a lifting unit. Two opposing sliding plates are slidably connected to the upper and lower sides of the slide groove at their top and bottom ends, respectively. The sliding plates can partially enter and exit the slide groove by horizontal sliding. The side of the sliding plate exposed from the slide groove is fixed to the arc-shaped internal support plate. Two fixed plates are fixed to both sides of the slide groove opening, with the two fixed plates located on the outer sides of the two sliding plates. A vertical elongated groove (first type) is formed on the fixed plate, and an oblique elongated groove (second type) is formed on the sliding plate. The lifting unit is fixed to the bottom of the fixed plate, and a horizontal shaft (first type) is fixed to the lifting end, penetrating both elongated grooves (first and second). The horizontal shaft (first type) has a roller (first type) located within elongated groove (first type) and a roller (second type) located within elongated groove (second type).

2. The gear tooth groove machining fixture as described in claim 1, characterized in that, A horizontal support plate is fixed to the lower part of the arc-shaped inner support plate on the side away from the central cylinder.

3. The gear tooth groove machining fixture as described in claim 2, characterized in that, A reinforcing plate is provided between the bottom surface of the horizontal support plate and the arc-shaped inner support plate.

4. The gear tooth groove machining fixture as described in claim 2, characterized in that, The device includes a pressure plate, the center of which has a through hole through which a central cylinder can pass, and the inner wall of the through hole has threads, while the outer wall of the central cylinder has threads that can be threaded to the pressure plate.

5. A fixture for machining gear tooth grooves as described in claim 2, characterized in that, The top surface of the horizontal support plate is smooth and / or coated with a lubricating layer.

6. A fixture for machining gear tooth grooves as described in claim 1, characterized in that, The side of the arc-shaped inner support plate away from the central cylinder is provided with an anti-slip rubber layer.

7. A fixture for machining gear tooth grooves as described in claim 4, characterized in that, The bottom surface of the pressure plate is provided with an anti-slip rubber layer.

8. A fixture for machining gear tooth grooves as described in claim 4, characterized in that, The sliding plate has a horizontal elongated groove three, and a roller three is provided in the elongated groove three. A horizontal shaft two is provided at the center of the roller three, and the two ends of the horizontal shaft two are respectively fixed to the fixed plates on both sides.

Images