Automatic centering honing device for grinding inner hole of valve sleeve

Abstract

The utility model discloses an automatic centering honing device for grinding an inner hole of a valve sleeve, relates to the technical field of grinding of the inner hole of the valve sleeve, and aims to solve the technical problem that the existing automatic centering honing device for grinding the inner hole of the valve sleeve cannot be quickly calibrated and centered when a workpiece or a cutter is replaced. A plurality of honing assemblies are installed on the machine frame upper base in a circumferential equidistant array mode, a dividing plate is installed on the machine frame lower base in a rotating mode, a centering assembly is fixedly installed at the axis position of the top of the rotatable dividing plate, when a rotary disc rotates, racks can synchronously stretch out or retract by the same distance through vortex-shaped teeth on the top, and therefore honing is achieved. When a clamp or a cutter is replaced, the V-shaped first centering abutting piece and the V-shaped second centering abutting piece can stretch out by the same distance at the same time and abut against all undetached honing assemblies and clamps for calibration and positioning at the same time, the clamp or the cutter can be rapidly installed at the corresponding position, calibration and centering are completed, and efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of valve sleeve inner hole grinding technology, and more specifically, to an automatic centering honing device for grinding valve sleeve inner holes. Background Technology

[0002] The valve sleeve is an important component of a valve, mainly used to support and guide the movement of the valve core. During the production process, a valve sleeve inner hole grinding device is used to improve the machining accuracy and surface finish of the valve sleeve inner hole. The valve sleeve inner hole grinding device generally includes a rotatable indexing plate on the frame, with fixtures installed circumferentially at equal intervals on the indexing plate. The valve sleeve is clamped in the fixtures, and the inner hole of the valve sleeve is ground by the honing component at the top of the fixture.

[0003] Existing automatic honing devices for grinding valve sleeve inner holes require time for setup and adjustment when changing fixtures or tools, and manual calibration is needed to align the workpiece held in the fixture with the honing head of the honing assembly. This cannot achieve rapid alignment and affects production efficiency. Therefore, we propose an automatic honing device for grinding valve sleeve inner holes. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology, adapt to the actual needs, and provide an automatic centering honing device for grinding the inner hole of valve sleeves, so as to solve the technical problem that the existing automatic centering honing devices for grinding the inner hole of valve sleeves cannot quickly calibrate the centering when changing workpieces or tools.

[0005] To solve the above technical problems, this utility model provides the following technical solution: an automatic centering honing device for grinding the inner hole of a valve sleeve, comprising a frame, wherein a plurality of honing components are mounted in a circumferentially equidistant array on the upper seat of the frame, and an indexing plate is rotatably mounted on the lower seat of the frame, wherein a centering component is fixedly mounted at the top center of the indexing plate, the centering component includes a housing, a transmission component is provided inside the housing, a drive component is connected to the power input end of the transmission component, and a centering abutment assembly is connected to the power output end of the transmission component;

[0006] The transmission assembly includes a turntable rotatably installed inside the housing, the top of the turntable being provided with vortex teeth and connected to several racks through the vortex teeth meshing.

[0007] The concentric abutment assembly includes a connecting frame installed on the outer end of the rack. A first concentric abutment and a second concentric abutment are fixedly installed on the top and bottom of the connecting frame, respectively. Both the first and second concentric abutments are "V" shaped with their openings facing outwards.

[0008] Preferably, the top of the indexing plate is equipped with a plurality of clamps arranged in a circumferentially equidistant array, the clamps being aligned with the honing assembly, and a coolant spraying assembly is also installed on the lower base of the frame.

[0009] Preferably, the drive assembly includes a servo motor, the power output end of the servo motor is connected to a first gear, the first gear is externally meshed with a second gear, and the axis of the second gear is connected to the axis of the turntable via a connecting rod.

[0010] Preferably, the housing includes an outer shell fixedly installed at the top axis of the indexing plate, and the outer shell has a plurality of sliding grooves arranged in a circumferentially equidistant array.

[0011] Preferably, the rack is slidably connected to the inner wall of the groove, the first centering abutment corresponds to the honing assembly, and the second centering abutment corresponds to the clamp.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This utility model has a centering component fixedly installed at the top axis of the rotatable indexing plate. When the turntable rotates, the rack can be extended or retracted synchronously by the top vortex teeth. When changing fixtures or tools, the first and second centering abutments, which are in the shape of a "V", can extend simultaneously by the same distance, and simultaneously abut against each of the undisassembled honing components and fixtures for calibration and positioning. The fixtures or tools can be quickly installed in the corresponding positions and the calibration and centering can be completed, which improves efficiency and solves the problem that the existing automatic centering honing devices used for grinding valve sleeve inner holes cannot quickly calibrate the centering when changing workpieces or tools.

[0014] 2. This utility model also incorporates a first and second centering abutment structure, both shaped like a "V" with their openings facing outwards. The "V"-shaped centering abutments symmetrically abut against the unremoved honing components and fixtures along two lines. This symmetrical abutment ensures precise alignment during abutment, allowing for quick positioning of the disassembled honing components and fixtures. It also enables rapid alignment and installation of the honing components and fixtures, further resolving the problem of existing automatic centering honing devices for valve sleeve inner hole grinding being unable to quickly align when changing workpieces or tools. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the centering component of this utility model;

[0017] Figure 3 This is a cross-sectional structural diagram of the centering component of this utility model;

[0018] Figure 4 This is a schematic diagram of the overall structure of the centering component of this utility model.

[0019] The labels in the diagram are as follows: 1. Frame; 2. Honing assembly; 3. Coolant spray assembly; 4. Indexing plate; 5. Fixture; 6. Alignment assembly; 7. Drive assembly; 8. Housing; 9. Alignment abutment assembly; 10. Transmission assembly;

[0020] 701. Servo motor; 702. First gear; 703. Second gear;

[0021] 801. Outer casing; 802. Slide groove;

[0022] 901. First pair of abutments; 902. Connecting frame; 903. Second pair of abutments;

[0023] 1001. Rack; 1002. Turntable; 1003. Spiral tooth. Detailed Implementation

[0024] like Figures 1 to 4 As shown, the present invention relates to an automatic centering honing device for grinding the inner hole of a valve sleeve, comprising a frame 1, a plurality of honing components 2 are mounted in a circumferentially equidistant array on the upper seat of the frame 1, an indexing plate 4 is rotatably mounted on the lower seat of the frame 1, and a centering component 6 is fixedly mounted at the top axis of the indexing plate 4. The centering component 6 includes a housing 8, a transmission component 10 is provided inside the housing 8, a drive component 7 is connected to the power input end of the transmission component 10, and a centering abutment assembly 9 is connected to the power output end of the transmission component 10.

[0025] The transmission assembly 10 includes a turntable 1002 rotatably mounted in the housing 8. The top of the turntable 1002 is provided with a spiral tooth 1003 and a plurality of racks 1001 are meshed with the spiral tooth 1003.

[0026] The centering abutment assembly 9 includes a connecting frame 902 mounted on the outer end of the rack 1001. A first centering abutment 901 and a second centering abutment 903 are fixedly mounted on the top and bottom of the connecting frame 902, respectively. Both the first centering abutment 901 and the second centering abutment 903 are V-shaped with their openings facing outwards. This invention, by fixing the centering assembly 6 at the top axis of the rotatable indexing plate 4, allows the rack 1001 to extend or retract synchronously by the same distance via the top spiral teeth 1003 when the turntable 1002 rotates. When changing the fixture 5 or the cutting tool, the V-shaped first centering abutment 901 and the second centering abutment can be aligned. 903 extends the same distance simultaneously, abutting against each of the unremoved honing components 2 and fixtures 5 for calibration and positioning. This allows for the quick installation of fixtures 5 or tools in the corresponding positions and completion of calibration and alignment, improving efficiency. Furthermore, the design incorporates a first alignment abutment 901 and a second alignment abutment 903, both shaped like a "V" with their openings facing outwards. The "V"-shaped alignment abutments symmetrically abut against the unremoved honing components 2 and fixtures 5 along two lines. This symmetrical abutment ensures more precise alignment and positioning during the abutment process, allowing for quick positioning of the disassembled honing components 2 and fixtures 5 and rapid calibration and alignment for the installation of the honing components 2 and fixtures 5.

[0027] Furthermore, several clamps 5 are installed in a circular equidistant array on the top of the indexing plate 4. The clamps 5 are aligned with the honing assembly 2. A coolant spraying assembly 3 is also installed on the lower seat of the frame 1. During honing, coolant is sprayed onto the honing area to prevent the honing area from overheating. The coolant spraying assembly 3 is connected to an external coolant supply assembly and both are existing products. The indexing plate 4 is an automatically rotating indexing plate 4 and is also an existing product.

[0028] Furthermore, the drive assembly 7 includes a servo motor 701, the power output end of which is connected to a first gear 702, and the first gear 702 is externally meshed with a second gear 703. The shaft of the second gear 703 is connected to the shaft of a turntable 1002 via a connecting rod for easy driving.

[0029] Furthermore, the housing 8 includes an outer shell 801 fixedly installed at the top axis of the indexing plate 4, and the outer shell 801 has a plurality of sliding grooves 802 arranged in a circumferentially equidistant array.

[0030] Furthermore, the rack 1001 is slidably connected to the inner wall of the slide groove 802, the first pair of center abutments 901 corresponds to the honing assembly 2, and the second pair of center abutments 903 corresponds to the clamp 5, which allows the rack 1001 to slide out or slide in smoothly.

[0031] Working Principle: This embodiment provides an automatic centering honing device for grinding the inner hole of a valve sleeve. In use, this invention uses a centering component 6 fixedly installed at the top axis of a rotatable indexing plate 4. When the turntable 1002 rotates, the top spiral teeth 1003 cause the rack 1001 to extend or retract synchronously by the same distance. When changing the clamp 5 or the cutting tool, the "V"-shaped first centering abutment 901 and the second centering abutment 903 extend simultaneously by the same distance, simultaneously abutting against each unremoved honing component 2 and clamp 5 for calibration and positioning. This allows for quick installation of the clamp 5 or cutting tool in the corresponding position and completion of calibration and centering. High efficiency is achieved through the design of a first and second pair of centering abutments 901 and 903, both shaped like a "V" with their openings facing outwards. These "V"-shaped centering abutments symmetrically hold the unremoved honing assembly 2 and fixture 5 along two lines. This symmetrical holding ensures precise alignment during alignment, allowing for quick positioning of the disassembled honing assembly 2 and fixture 5. It also facilitates rapid alignment and installation of the honing assembly 2 and fixture 5. When it is necessary to replace the fixture 5 or the cutting tool, external power supply activates the servo motor 701 via an external switch, controlling its forward rotation. The servo motor 701 then drives the first gear 702 clockwise. As the needle rotates, the first gear 702 is externally meshed with a larger diameter second gear 703. The second gear 703 rotates slowly counterclockwise in sync, causing the turntable 1002 to rotate slowly counterclockwise in sync. The turntable 1002 has a spiral tooth 1003 at its top, which meshes with several racks 1001. These racks 1001 are circumferentially and evenly distributed at the top of the turntable 1002. As the racks 1001 extend synchronously, the end-aligning abutment assemblies 901 also extend synchronously until, upon manual observation, a "V" shape is formed, with the first and second alignment abutments 901 simultaneously abutting against each of the remaining unremoved parts. The honing assembly 2 and fixture 5 are calibrated and positioned. The servo motor 701 is self-locked by an external switch. The honing assembly 2 and fixture 5 to be replaced are disassembled, and the new honing assembly 2 and fixture 5 are installed one by one. The honing assembly 2 can be installed by pressing the double lines against the inner wall of the first centering abutment 901, and the fixture 5 can be installed by pressing against the inner wall of the second centering abutment 903. After installation, the honing assembly 2 and fixture 5 are still aligned, which can be quickly aligned and save time (the honing assembly 2, coolant spray assembly 3, indexing plate 4, fixture 5 and servo motor 701 are all existing products on the market and are all connected to external switches and external power supplies).

[0032] The embodiments disclosed herein are preferred embodiments, but are not limited thereto. Those skilled in the art can readily grasp the spirit of this utility model based on the above embodiments and make different extensions and variations. However, as long as they do not depart from the spirit of this utility model, they are all within the protection scope of this utility model.

Claims

1. An automatic self-aligning honing device for grinding the inner bore of a valve sleeve, characterized in that, The machine includes a frame (1), on which a plurality of honing components (2) are mounted in a circumferentially equidistant array. A dividing plate (4) is rotatably mounted on the lower part of the frame (1). A centering component (6) is fixedly mounted at the top axis of the dividing plate (4). The centering component (6) includes a housing (8). A transmission component (10) is provided inside the housing (8). The power input end of the transmission component (10) is connected to a drive component (7). The power output end of the transmission component (10) is connected to a centering abutment assembly (9). The transmission assembly (10) includes a turntable (1002) rotatably mounted in the housing (8). The top of the turntable (1002) is provided with a spiral tooth (1003) and a plurality of racks (1001) are meshed with the spiral tooth (1003). The concentric abutment assembly (9) includes a connecting frame (902) installed on the outer end of the rack (1001). The top and bottom of the connecting frame (902) are respectively fixedly installed with a first concentric abutment (901) and a second concentric abutment (903). Both the first concentric abutment (901) and the second concentric abutment (903) are "V" shaped with their openings facing outwards.

2. The automatic centering honing device for honing the inner hole of a valve sleeve according to claim 1, characterized in that The indexing plate (4) has several clamps (5) arranged in a circular equidistant array on its top. The clamps (5) are aligned with the honing assembly (2). A coolant spraying assembly (3) is also installed on the lower seat of the frame (1).

3. The automatic centering honing device for honing the inner hole of a valve sleeve according to claim 2, characterized in that The drive assembly (7) includes a servo motor (701), the power output end of the servo motor (701) is connected to a first gear (702), the first gear (702) is externally meshed with a second gear (703), and the axis of the second gear (703) is connected to the axis of the turntable (1002) via a connecting rod.

4. The automatic centering honing device for honing the inner hole of a valve sleeve according to claim 3, characterized in that The housing (8) includes an outer shell (801) fixedly installed at the top axis of the indexing plate (4), and the outer shell (801) has a plurality of grooves (802) arranged in a circumferentially equidistant array.

5. The automatic centering honing device for honing the inner hole of a valve sleeve according to claim 4, characterized in that The rack (1001) is slidably connected to the inner wall of the groove (802), the first mating abutment (901) corresponds to the honing assembly (2), and the second mating abutment (903) corresponds to the clamp (5).

Images