A casting apparatus for gear machining

Abstract

This utility model relates to the field of gear casting technology, specifically a gear casting device, including a pre-mold mechanism and a pitch adjustment mechanism mounted on the pre-mold mechanism. The pre-mold mechanism includes a casting base, a sand-filling cover mounted on top of the casting base, and multiple evenly distributed transverse grooves on the top of the casting base. A bottom tray plate is movably mounted in the transverse grooves, and a threaded tube is movably mounted on the bottom of the casting base. By installing the pre-mold mechanism on the worktable and the pitch adjustment mechanism within it, when producing large gears of different models, the mold of the gear teeth can be pre-adjusted without changing the casting center or the mold level. Once the pitch adjustment mechanism is selected and adjusted, molding sand can be filled into the changed mold cavity, thereby effectively improving the efficiency of large gear casting.

Description

Technical Field

[0001] This utility model relates to the field of gear casting technology, specifically a casting device for gear processing. Background Technology

[0002] Gear casting is mainly used for the processing of large gears. Since the heat treatment of large gears is extremely difficult, casting is currently the optimal method for producing large gears.

[0003] Currently, there are still some defects in the molds for casting large gears. The tooth edges and dimensions of existing large gear molds are constant, so each type of mold can only cast specific types of gears. However, this method requires repeated mold changes, which increases the working time. At the same time, the casting center and level of the mold need to be precisely calibrated.

[0004] In view of this, a casting device for gear processing was designed to solve the above problems. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by this utility model is as follows:

[0007] A gear casting apparatus includes a pre-mold mechanism and a pitch adjustment mechanism mounted on the pre-mold mechanism. The pre-mold mechanism includes a casting base, a sand-filling cover mounted on top of the casting base, and multiple evenly distributed transverse grooves on the top of the casting base. A bottom tray plate is movably mounted in the transverse grooves, a screw tube is movably mounted on the bottom of the casting base, a main slide is movably mounted on the threaded section of the screw tube, and a first traction frame is movably mounted between the main slide and the bottom tray plate. The pitch adjustment mechanism includes a top tray plate movably mounted outside the bottom tray plate, and a screw hole is opened inside the top tray plate. A locking bolt is installed in the screw hole, and a gear mold is fixedly mounted on the inner end of the top tray plate.

[0008] In a preferred embodiment, the present invention may be further configured as follows: the pitch adjustment mechanism further includes a second slide seat movably mounted outside the solenoid, a washer movably mounted outside the second slide seat, a bottom end rod mounted inside the second slide seat, a second traction frame movably mounted on the bottom end rod, and a top end rod movably mounted on the other end of the second traction frame.

[0009] The top rod is fixedly installed inside the top drawer plate.

[0010] In a preferred embodiment, the present invention may be further configured such that: the preformation mechanism further includes a horizontal plate mounted on a support, a hydraulic component fixedly mounted inside the horizontal plate, and a traction plate mounted on a hydraulic sub-rod within the hydraulic component;

[0011] The other end of the traction plate is located directly below the solenoid.

[0012] In a preferred embodiment, the present invention can be further configured such that the preformation mechanism also includes a gear ring fixedly installed at the bottom of the spiral tube, and the outer wall of the spiral tube is provided with evenly distributed slide tracks.

[0013] In a preferred embodiment, the present invention may be further configured such that: a washer is mounted on the top of the second slide and a plurality of bolts are inserted into the washer and fixedly installed in the second slide.

[0014] In a preferred embodiment, the present invention can be further configured such that: a vertical rod extending through the outside of the screw tube is fixedly installed inside the second slide block, and the bottom end of the vertical rod is fixedly installed inside the traction plate.

[0015] In a preferred embodiment, the present invention can be further configured such that: the side of the casting base is provided with evenly distributed fan-shaped slots, and the outer end of the top drawer plate is adapted to the fan-shaped slots.

[0016] In a preferred embodiment, the present invention can be further configured such that: the inner end of the bottom drawer plate is an arc-shaped groove, and the two ends of the tooth mold extending through to the inner side of the sand-filled cover are provided with arc-shaped end faces adapted to the arc-shaped groove.

[0017] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0018] 1. This utility model installs a pre-mold mechanism on the workbench and a pitch adjustment mechanism inside the pre-mold mechanism. When it is necessary to produce large gears of different models, the mold of the tooth opening is pre-adjusted without changing the casting center and the mold level. After the pitch adjustment mechanism is selected and adjusted, molding sand can be filled into the changed mold cavity, thereby effectively improving the casting efficiency of large gears. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the use of this utility model;

[0020] Figure 2 This is a schematic diagram of the tooth pitch adjustment mechanism of this utility model;

[0021] Figure 3 This utility model Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a bottom view of the precast molding mechanism of this utility model;

[0023] Figure 5 This utility model Figure 4 A partial diagram of the explosion.

[0024] Figure label:

[0025] 100. Precast mold mechanism; 110. Casting base; 1101. Bracket; 1102. Horizontal plate; 120. Sand filling cover; 130. Hydraulic components; 1301. Traction plate; 140. Bottom drawer plate; 150. First traction frame; 160. Screw tube; 1601. Main slide; 1602. Gear ring;

[0026] 200. Gear pitch adjustment mechanism; 210. Second slide block; 2101. Washer ring; 2102. Bottom end rod; 2103. Washer; 2104. Bolt; 220. Vertical rod; 230. Second traction frame; 240. Top drawer plate; 2401. Top end rod; 2402. Locking bolt; 2403. Gear mold. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0028] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0029] The following describes, with reference to the accompanying drawings, some embodiments of a gear-making casting apparatus provided by this utility model. Example

[0030] Combination Figures 1 to 5 As shown, the present invention provides a gear casting device, including a pre-mold mechanism 100 and a pitch adjustment mechanism 200 installed on the pre-mold mechanism 100. The pre-mold mechanism 100 is used to provide an effective casting carrier for casting gears, and the pitch adjustment mechanism 200 is used to adjust the pitch of the gear teeth after the gear structure is changed.

[0031] The precast molding mechanism 100 includes a casting base 110, a sand-filling cover 120 installed on the top of the casting base 110, and a plurality of evenly distributed transverse grooves on the top of the casting base 110, a bottom drawer plate 140 movably installed in the transverse grooves, a screw tube 160 movably installed at the bottom of the casting base 110, a main slide 1601 movably installed on the threaded section of the screw tube 160, and a first traction frame 150 movably installed between the main slide 1601 and the bottom drawer plate 140.

[0032] The pitch adjustment mechanism 200 includes a top drawer plate 240 movably installed outside the bottom drawer plate 140, with a screw hole inside the top drawer plate 240, a locking bolt 2402 installed in the screw hole, a tooth mold 2403 fixedly installed at the inner end of the top drawer plate 240, a second slide 210 movably installed outside the screw tube 160, a washer 2101 movably installed outside the second slide 210, a bottom end rod 2102 installed inside the second slide 210, a second traction frame 230 movably installed on the bottom end rod 2102, and a top end rod 2401 movably installed at the other end of the second traction frame 230.

[0033] The top rod 2401 is fixedly installed inside the top drawer plate 240;

[0034] The top of the second slide block 210 is equipped with a washer 2103 and a plurality of bolts 2104 that are inserted into the washer 2103 and fixedly installed in the second slide block 210.

[0035] The second slide block 210 has a vertical rod 220 that extends through the outside of the screw tube 160 and is fixedly installed inside the slide block 210. The bottom end of the vertical rod 220 is fixedly installed inside the traction plate 1301.

[0036] The inner end of the bottom tray plate 140 is an arc-shaped groove, and the tooth mold 2403 extends through to both ends of the inner side of the sand-filled cover 120 and has arc-shaped end faces that fit the arc-shaped groove.

[0037] When the hydraulic component 130 is running, its internal hydraulic rod, in conjunction with the traction plate 1301, will push the second slide 210 to rise and fall at a uniform speed. The pad ring 2101, which is movably installed on the outside of the second slide 210, can provide effective lateral movement energy for the evenly distributed multiple top drawer plates 240 without hindering the extension of the second traction frame 230.

[0038] As the locking bolt 2402 is loosened by reversing the screw, the top drawer 240, which slides along the outside of the bottom drawer 140, will retract into the inner cavity of the sand-filling cover 120 until the evenly distributed tooth molds 2403 and the sand-filling cover 120 adjust their tooth pitch. Finally, after adjusting the tooth pitch, the tooth molds 2403 and the inner cavity of the sand-filling cover 120 are filled with molding sand. This provides a mold for casting large gears with variable tooth pitch, thereby improving the efficiency of large gear casting. Example

[0039] Combination Figures 2 to 5 As shown, based on Embodiment 1, the precast molding mechanism 100 also includes a horizontal plate 1102 mounted on the bracket 1101, a hydraulic component 130 fixedly mounted inside the horizontal plate 1102, and a traction plate 1301 mounted on the hydraulic sub-rod inside the hydraulic component 130.

[0040] The other end of the traction plate 1301 is located directly below the screw tube 160, and the gear ring 1602 is fixedly installed at the bottom of the screw tube 160. The outer wall of the screw tube 160 is provided with evenly distributed slide tracks.

[0041] The side of the casting base 110 is provided with evenly distributed fan-shaped slots, and the outer end of the top drawer plate 240 is adapted to the fan-shaped slots.

[0042] Preferably, a U-shaped clamp is fixedly installed at the bottom of the outer end of the bottom drawer plate 140, and the top of the first traction frame 150 is movably installed in the U-shaped clamp. When the external drive device cooperates with the chain drive gear ring 1602, the screw tube 160 installed in the gear ring 1602 will help the main slide 1601 to rise and fall at a uniform speed. At this time, the main slide 1601 will push the evenly distributed first traction frames 150. After being pressed, the evenly distributed first traction frames 150 will control the multiple bottom drawer plates 140 to extend and retract relative to each other, thereby providing an effective support platform for the sliding of the top drawer plate 240.

[0043] The working principle and usage process of this utility model: After the bracket 1101 is fixedly installed on the workbench, the port formed by the casting base 110 and the sand filling cover 120 set on the top of the four brackets 1101 will be vertically upward. Then, the external drive device and the chain drive gear ring 1602 are used.

[0044] Once the preparation is complete, the main slide 1601 will rise and fall along the threaded section of the screw tube 160 using an external drive device, a chain drive gear ring 1602, and a screw tube 160. As the main slide 1601 rises and falls, the first traction frame 150, which is movably mounted on the main slide 1601, will control the bottom drawer plate 140 to extend and retract relative to the transverse groove at the top of the casting base 110.

[0045] Next, the hydraulic component 130 is operated. As the hydraulic sub-rod inside the hydraulic component 130 extends, it works in conjunction with the traction plate 1301 installed at the bottom of the hydraulic sub-rod to pull the vertical rod 220. Finally, the second slide block 210 and the washer ring 2101 will rise and fall along the outside of the screw tube 160. The second traction frame 230, which is movably installed on the bottom end rod 2102, will drive the top end rod 2401 and the top drawer plate 240 to move laterally relative to each other along the top of the bottom drawer plate 140. Finally, the tooth mold 2403 installed on the top of the top drawer plate 240 can work with the sand filling cover 120 to pre-adjust the tooth spacing.

[0046] After the mold adjusts the teeth of the gear to be cast, the molding sand required for casting is then filled in layers into the cavity formed by the sand filling cover 120 and the gear mold 2403.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A casting apparatus for gear processing, comprising a pre-mold mechanism (100), characterized in that, It also includes a pitch adjustment mechanism (200) installed on the preform mechanism (100); The precast molding mechanism (100) includes a casting base (110), a sand-filling cover (120) installed on the top of the casting base (110), and a plurality of evenly distributed transverse grooves on the top of the casting base (110), a bottom drawer plate (140) movably installed in the transverse grooves, a screw tube (160) movably installed at the bottom of the casting base (110), a main slide (1601) movably installed on the threaded section of the screw tube (160), and a first traction frame (150) movably installed between the main slide (1601) and the bottom drawer plate (140). The pitch adjustment mechanism (200) includes a top drawer plate (240) movably installed outside the bottom drawer plate (140), and the top drawer plate (240) has a screw hole inside, a locking bolt (2402) installed in the screw hole, and a tooth mold (2403) fixedly installed inside the top drawer plate (240).

2. The casting apparatus for gear processing according to claim 1, characterized in that, The pitch adjustment mechanism (200) further includes a second slide (210) movably mounted outside the solenoid (160), a washer (2101) movably mounted outside the second slide (210), a bottom end rod (2102) mounted inside the second slide (210), a second traction frame (230) movably mounted on the bottom end rod (2102), and a top end rod (2401) movably mounted at the other end of the second traction frame (230). The top rod (2401) is fixedly installed inside the top drawer plate (240).

3. The casting apparatus for gear processing according to claim 1, characterized in that, The precast molding mechanism (100) also includes a horizontal plate (1102) mounted on a bracket (1101), a hydraulic component (130) fixedly mounted inside the horizontal plate (1102), and a traction plate (1301) mounted on a hydraulic sub-rod inside the hydraulic component (130). The other end of the traction plate (1301) is located directly below the solenoid (160).

4. The casting apparatus for gear processing according to claim 1, characterized in that, The preform mechanism (100) also includes a gear ring (1602) fixedly installed at the bottom of the screw tube (160), and the outer wall of the screw tube (160) is provided with evenly distributed slides.

5. A casting apparatus for gear processing according to claim 2, characterized in that, The top of the second slide (210) is fitted with a washer (2103) and a plurality of bolts (2104) inserted into the washer (2103) and fixedly installed in the second slide (210).

6. A casting apparatus for gear processing according to claim 2, characterized in that, The second slide (210) has a vertical rod (220) that extends through the outside of the screw tube (160) and the bottom end of the vertical rod (220) is fixedly installed inside the traction plate (1301).

7. A casting apparatus for gear processing according to claim 1, characterized in that, The side of the casting base (110) is provided with evenly distributed fan-shaped slots, and the outer end of the top drawer plate (240) is adapted to the fan-shaped slots.

8. A casting apparatus for gear processing according to claim 1, characterized in that, The inner end of the bottom tray plate (140) is an arc-shaped groove, and the two ends of the tooth mold (2403) that penetrate to the inner side of the sand filling cover (120) are provided with arc-shaped end faces that are adapted to the arc-shaped groove.

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