Spiral track machining mechanism tool

Abstract

The utility model provides a spiral track machining mechanism tool. Comprising a rack, a gear, a worm and an indexing turbine. And the rack is fixed on the machine tool and moves along with the machine tool. The spiral track of the groove roller is machined through transmission of the rack, the gear and the output shaft, and the spiral angle of the groove roller is achieved through transmission of the worm gear and the worm. The spiral groove machining quality and efficiency are improved, and the use cost of a machine tool is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical engineering, and particularly relates to a tooling for a spiral trajectory processing mechanism. Background Art

[0002] The processing of the spiral groove of the rubber internal mixer and special equipment spiral groove roller has always been a difficult problem to overcome. Due to various types of spiral angles of the groove roller, different roll surface specifications, large roll weight, etc., it has always affected the production cycle of the company's products. How to process the groove roller well under the premise of improving efficiency, ensuring quality, and reducing costs has always been an important research topic.

[0003] The processing of the groove is divided into traditional processing and current processing methods. The traditional processing method basically uses a planer or a boring and milling machine for processing, and the current processing method is to use a numerical control machining center for processing. Whether using the traditional or modern processing method, when the tool performs cutting, the tool moves along the spiral angle β, so it can be decomposed into two movements, that is, the straight movement of the tool along the axis direction of the groove roller on the machine tool and the rotational movement of the groove roller along the axis. The utility model provides a tooling for a spiral trajectory processing mechanism, which is mainly applied to rubber spiral groove rollers and special spiral groove roller products.

[0004] The helix angle β of the groove is the angle formed by the groove and the roller center line. In the actual processing process of the groove, the analysis should first be carried out from the size of the helix angle of the groove. Because tanβ = π×D / (Z×L), that is, the spiral angle is related to the diameter D of the roller, the number Z of grooves, and the length L. Different D, Z, and L have different β values. Therefore, the parameters of D and L should be considered, and at the same time, the number of grooves of the roller to be processed should be taken into account. According to these parameters, together with the processing capacity and processing cost of the machine tool, the best processing method can be finally determined.

[0005] In traditional groove processing, the size of the helix angle β of the groove is limited to a certain extent. This is because when processing the groove of the roller on a traditional machine tool, the principle is to drive the tool by the main cutting movement of the machine tool and additionally use a tooling device with different gear meshing to make the groove roller workpiece make the required spiral angle relative to the tool for mechanical processing. The spiral angle of the groove is directly proportional to the transmission speed ratio of the specific tooling device used. When the processed helix angle or the adopted transmission speed ratio is too large, it will reduce the rigidity of the machine tool spindle and cause unstable transmission, thereby causing the tool to vibrate, making the processed groove uneven and not smooth, affecting the processing quality, and even causing damage to the tool, resulting in the inability to process the groove of the groove roller or the damage and scrapping of the roll. Summary of the Utility Model

[0006] The processing of a common floor boring machine is to achieve the processing of a grooved roll through a specific tooling. It cleverly uses traditional mechanical transmission. The spiral trajectory of the grooved roll is achieved through the transmission of a rack, a gear, and an output shaft. The indexing problem of the grooved roll is achieved through the transmission of a worm and a worm gear. Furthermore, considering that such a motion mechanism is used to achieve the processing of the grooved roll, but only a fixed spiral angle (β) can be achieved. How to achieve any spiral angle? Another clever and simple mechanism is used, which is designed with a pair of speed ratio gears to achieve any spiral angle (β). We call it a speed increasing mechanism. The size of the spiral angle is changed by changing the size of the speed ratio gears.

[0007] The technical solution of the present utility model is as follows: A tooling for a spiral trajectory processing mechanism includes a rack 1, a gear 2, a worm 3, and an indexing worm gear 4; the rack 1 is fixed to the machine tool and moves therewith; the gear 2 is located on the rack 1, and when the rack 1 moves, the gear 2 rotates; one end of the worm 3 is connected to the gear 2; the indexing worm gear 4 meshes with the worm 3; the indexing worm gear 4 drives a tool to process inside a roller 5.

[0008] A pair of speed increasing gear pairs 6 is added between the gear 2 and the worm 3; the large gear in the speed increasing gear pair 6 is connected to the gear 2 and rotates therewith; the small gear in the speed increasing gear pair 6 is connected to the worm 3.

[0009] The speed increasing gear pair 6 and the worm 3 are provided with an indexing linkage mechanism. After each groove is processed, the transmission between the speed increasing gear pair 6 and the worm 3 is disconnected through the indexing linkage mechanism; the worm 3 and the indexing worm gear 4 form an independent transmission mechanism. Rotating the worm 3 drives the indexing worm gear 4 to achieve groove indexing. After the groove indexing, the indexing linkage mechanism is reconnected.

[0010] The speed ratio of the speed increasing gear pair 6 is determined according to the following formula;

[0011]

[0012] where Z1 is the number of teeth of the large gear, Z2 is the number of teeth of the small gear, β is the helix angle of the groove, Z d is the number of teeth of the gear 2, Z 槽 is the number of grooves of the grooved roll, and D is the diameter of the roller.

[0013] The beneficial effects of the present utility model: The present utility model can process any spiral groove, solves the problem of processing grooves of a spiral grooved roller, uses a boring machine in combination with a tooling for a spiral trajectory processing mechanism to solve any spiral angle of the groove, achieves the spiral trajectory of the grooved roll through the transmission of a rack, a gear, and an output shaft, and achieves the spiral angle of the grooved roll through the transmission of a worm and a worm gear. It improves the quality and efficiency of processing spiral grooves and reduces the use cost of the machine tool. Description of the Drawings

[0014] Figure 1It is the working principle diagram of a fixed helix angle;

[0015] Figure 2 It is the working principle diagram of threading with an arbitrary helix angle;

[0016] Figure 3 It is the working principle diagram of floor-type boring machine processing.

[0017] In the figure: 1 - rack; 2 - gear; 3 - worm; 4 - indexing turbine; 5 - roller; 6 - speed-increasing gear pair. Specific implementation method

[0018] Specific tooling clamping (see Figure 3 ) Select different corresponding worm wheels according to the number of grooves Z 槽 to achieve uniform distribution of the grooves on the groove roller. Connect the journal of the groove roller and the worm wheel through a positioning key, then adjust the height of the bracket to the same height as the worm wheel and the indexing linkage device. If the bracket is too low, it can be achieved through a backing plate, and tighten both ends with center points. Calculate Z1 / Z2 = tanβ×6.5Z d Z 槽 / D to calculate the speed ratio of the speed ratio gears Z1 and Z2. For example.

[0019] Taking the drawing of the hollow groove roller as an example, where the angle of the inclined groove roller is 4°27′40″, the maximum diameter of the working surface of the roller is 710 mm, and the number of grooves of the groove roller Z 槽 = 150, Z d = 14.

[0020]

[0021] Given i 12 = 1.5, the number of teeth of Z1 and Z2 can be calculated (the commonly used change gears in the workshop have the number of teeth between 20 - 100)

[0022] The first scheme of speed-increasing change gears: Z1 = 30, Z2 = 20

[0023] The second scheme of speed-increasing change gears: Z1 = 39, Z2 = 26

[0024] The third scheme of speed-increasing change gears: Z1 = 45, Z2 = 30

[0025] The fourth scheme of speed-increasing change gears: Z1 = 66, Z2 = 44

[0026] Select the gears with the correct number of teeth. Clamp the tooling according to Figure 3 Install it well. It is necessary to debug the specific tooling mechanism to ensure that there is no jamming phenomenon during the movement process, and the movement slack should be avoided as much as possible.

[0027] After machining each groove, it is necessary to disconnect the indexing linkage device and the speed ratio gear drive so that the worm gear and the worm form an independent transmission mechanism. Rotate the worm to drive the worm gear to achieve groove indexing. After groove indexing, it is necessary to reconnect the indexing linkage mechanism, and repeat this cycle to machine the grooves.

Claims

1. A tooling for a spiral trajectory machining mechanism, characterized in that, The tooling of the spiral trajectory machining mechanism includes a rack (1), a gear (2), a worm (3) and a dividing turbine (4); the rack (1) is fixed on the machine tool and moves therewith; the gear (2) is located on the rack (1), and when the rack (1) moves, the gear (2) rotates; one end of the worm (3) is connected to the gear (2); the dividing turbine (4) meshes with the worm (3); the dividing turbine (4) drives the tool to machine inside the roller (5).

2. The tooling of the spiral trajectory machining mechanism according to claim 1, characterized in that A pair of speed increasing gear pairs (6) are added between the gear (2) and the worm (3); the large gear in the speed increasing gear pair (6) is connected to the gear (2) and rotates therewith; the small gear in the speed increasing gear pair (6) is connected to the worm (3).

3. The fixture of the spiral trajectory machining mechanism according to claim 2, characterized in that, The speed increasing gear pair (6) and the worm (3) are provided with a dividing linkage mechanism. After machining each groove, the transmission between the speed increasing gear pair (6) and the worm (3) is disconnected through the dividing linkage mechanism; the worm (3) and the dividing turbine (4) form an independent transmission mechanism, and rotating the worm (3) drives the dividing turbine (4) to realize groove indexing. After the groove indexing, the dividing linkage mechanism is reconnected.

4. The tooling for the spiral trajectory machining mechanism according to claim 2 or 3, characterized in that, The speed ratio of the speed increasing gear pair (6) is determined according to the following formula; Among them, Z1 is the number of teeth of the large gear, Z2 is the number of teeth of the small gear, β is the helix angle of the groove, Z d is the number of teeth of the gear (2), Z 槽 is the number of grooves of the grooved roller, and D is the diameter of the roller.

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