CN217371740U - Grinding device for inner hole sealing line of valve core - Google Patents
Grinding device for inner hole sealing line of valve core Download PDFInfo
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- CN217371740U CN217371740U CN202123437085.4U CN202123437085U CN217371740U CN 217371740 U CN217371740 U CN 217371740U CN 202123437085 U CN202123437085 U CN 202123437085U CN 217371740 U CN217371740 U CN 217371740U
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- valve core
- clamp
- supporting plate
- inner hole
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Abstract
The utility model discloses a valve core inner hole sealing line grinding device for solving the technical problem of unstable grinding precision of the valve core inner hole sealing line, which comprises a grinding cutter, a motor, a bearing box, a supporting plate and a clamp, wherein a plurality of grinding cutters are arranged in a row and are positioned below the bearing box, the grinding cutter comprises a floating cutter handle and a grinding head, the floating cutter handle is fixedly connected with a shaft rod, and the connecting end of the grinding head is arranged in the floating cutter handle; the clamp is configured to clamp a middle portion of the valve cartridge; the supporting plate is positioned below the clamp, a through hole is formed in the supporting plate, and a guide bushing is arranged in the through hole; the bottom of the supporting plate is provided with a bottom support which covers all the guide bushings. The floating cutter handle capable of self-centering is adopted in the device, the shaft error between the cutter and the inner hole of the valve core is automatically compensated, the accurate positioning of the grinding cutter is ensured, and the grinding precision of the sealing line of the inner hole of the valve core is improved.
Description
Technical Field
The utility model belongs to the technical field of heavy engineering machine tool, involve the dipper case, especially involve case hole sealing line grinder.
Background
When the bucket rod descends, due to the action of gravity, the pressure at the top end of the oil cylinder of the bucket rod is greater than the pressure at the bottom end of the oil cylinder, partial pressure oil at the top end of the oil cylinder and pressure oil output by the pump can be supplied to the bottom end of the oil cylinder through the bucket rod regeneration hydraulic system, the descending speed of the bucket rod can be accelerated, and the working efficiency is improved. Bucket rod case subassembly among the bucket rod regeneration hydraulic system includes bucket rod case and installs the cone valve case in bucket rod case hole, adopts line seal structure between cone valve case and the bucket rod case, and the sealing line in the bucket rod case hole needs the precision grinding, just can reach the sealing performance of designing requirement.
The multi-station grinding device commonly used in a plurality of devices for grinding the inner holes of the valve cores at present has a plurality of grinding stations, the grinding head which synchronously ascends and descends can simultaneously finish grinding of the inner holes of the valve cores, and the grinding efficiency is high. Although the grinding efficiency of the grinding device is high, the grinding precision is unstable, and the main reasons for the unstable grinding precision are that the cutter cannot automatically align the axis, and the coaxiality between the cutter and the inner hole of the valve core is not accurate.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: the grinding device for the inner hole sealing line of the valve core is provided, wherein the cutter can automatically find the axis of the valve core, and the positioning and clamping precision of the valve core is high.
In order to solve the technical problem, the utility model discloses a technical scheme as follows:
the grinding device for the inner hole sealing line of the valve element comprises grinding tools, a motor, a bearing box, a supporting plate and a clamp, wherein a plurality of the grinding tools are arranged in a straight line and are positioned below the bearing box, a belt pulley component is arranged above the bearing box, the motor drives the belt pulley component to operate, the bottom end of a shaft rod arranged in the bearing box is fixedly connected with the corresponding grinding tool, and the top end of the shaft rod is connected with the belt pulley component;
the grinding tool comprises a floating tool handle and a grinding head, the floating tool handle is fixedly connected with the shaft lever, and the connecting end of the grinding head is installed in the floating tool handle;
a vertical linear guide rail is arranged on the side surface of the support, the bearing box is connected to the linear guide rail in a sliding manner, and the motor is fixedly connected with the bearing box; a servo ball screw pair is arranged in the support and used for driving the bearing box to move up and down along the linear guide rail;
the clamp is configured to clamp a middle portion of the valve cartridge; the supporting plate is positioned below the clamp, a through hole is formed in the supporting plate, and a guide bushing is arranged in the through hole; and the bottom of the supporting plate is provided with a bottom support for covering all the guide bushings.
Further, a supporting block is arranged above the supporting plate, and the guide bushing extends into the supporting block.
Further, the fixture comprises a fixture plate, fixed stop blocks, side push blocks and an air cylinder, wherein the fixed stop blocks are fixed at the top of the fixture plate, the number of the side push blocks is consistent with that of the grinding tools, the side push blocks are respectively connected to the slide rails at the top of the support in a sliding mode, and the side push blocks are driven by the air cylinder to move towards or away from the fixed stop blocks.
Preferably, one side of the side push block, which corresponds to the fixed stop block, is provided with a first V-shaped clamping groove, and the inner side of the fixed stop block is provided with a second V-shaped clamping groove.
Furthermore, the supporting plate is arranged at the bottom of the jig plate through a guide rod and is driven to lift by a servo ball screw pair.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the device adopts the floating tool handle capable of self-centering, automatically compensates the shaft error between the tool and the inner hole of the valve core, ensures the accurate positioning of the grinding tool and improves the grinding accuracy of the sealing line of the inner hole of the valve core;
2. the device adopts the supporting plate to support the valve core from the bottom, the positioning precision of the valve core on the supporting plate is improved by the guide bushing, the auxiliary clamp clamps the valve core from the middle part, the clamping and positioning precision of the valve core in the device is improved, and the grinding precision of the sealing line of the inner hole of the valve core is improved;
3. the device adopts the detachable bottom support, and the valve core can be taken and placed from the lower part of the tool, so that the relative distance between the tool and the clamp can be reduced, and the stroke of the tool is shortened.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below.
FIG. 1 is a schematic view of a polishing apparatus;
FIG. 2 is a side view of the grinding apparatus;
fig. 3 is a schematic view of guiding and positioning of the valve core on the supporting plate.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
Examples
The grinding apparatus shown in fig. 1 includes a grinding tool 10, a motor 20, a bearing housing 30, a carrier 40, and a clamp 50, the clamp 50 being configured to clamp a middle portion of a valve cartridge. The plurality of grinding tools 10 are arranged in a straight line and are positioned below the bearing box 30, the belt pulley assembly 60 is arranged above the bearing box 30, the motor 20 drives the belt pulley assembly 60 to run, the bottom end of a shaft rod arranged in the bearing box 30 is fixedly connected with the corresponding grinding tool 10, the top end of the shaft rod is connected with the belt pulley assembly 60, and the motor 20 drives all the grinding tools 10 to rotate in the same direction, at the same speed and at the same time through the belt pulley assembly 60 and the bearing box 30.
The grinding tool 10 comprises a floating tool shank and a grinding head, the floating tool shank is fixedly connected with the shaft lever, and the connecting end of the grinding head is installed in the floating tool shank. The floating cutter handle has a self-centering function, shaft errors between the cutter and the inner hole of the valve core are automatically compensated, accurate positioning of the grinding cutter 10 is guaranteed, and grinding accuracy of a sealing line of the inner hole of the valve core is improved.
A vertical linear guide rail 70 is arranged on the side surface of the bracket, the bearing box 30 is connected on the linear guide rail 70 in a sliding way, and the motor 20 is fixedly connected with the bearing box 30; the servo ball screw pair 80 is arranged in the bracket, after the valve core is clamped and positioned in the clamp 50, the servo ball screw pair drives the bearing box 30 to move downwards along the linear guide rail 70, and after the grinding head is in place in the inner hole of the valve core, the motor 20 drives the grinding cutter 10 to rotate quickly to complete the grinding operation of the sealing line.
The support plate 40 is positioned below the clamp 50, a through hole is formed in the support plate 40, a guide bushing 90 is arranged in the through hole, the assembly clearance between the interior of the bushing and the outer wall of the valve core is 0.006mm-0.01mm, the bottom end of the valve core is inserted into the guide bushing, the top end of the valve core penetrates through the clamp 50, and the clamp 50 is clamped in the middle. The supporting plate 40 is adopted to support the valve core from the bottom, the positioning accuracy of the valve core on the supporting plate 40 is improved by the guide bushing, the auxiliary clamp 50 clamps the valve core from the middle part, the clamping and positioning accuracy of the valve core in the device is improved, and therefore the grinding accuracy of the sealing line of the inner hole of the valve core is improved.
The bottom of the support plate 40 is provided with a bottom support 100 covering all the guide bushings, and after the valve core is ground, the bottom support is removed, so that the valve core can be drawn out from the lower part of the fixture 50, and the blanking of the valve core is completed. The device adopts a detachable bottom support, and the valve core can be taken and placed from the lower part of the tool, so that the relative distance between the tool and the clamp 50 can be reduced, and the stroke of the tool is shortened.
Preferably, a supporting block 110 is arranged above the supporting plate 40, and the guide bushing extends into the supporting block, so that the clamping guide length of the bottom end of the valve core is increased, and the installation stability of the valve core is improved.
As a modification of the present embodiment, the specific structure of the clamp 50 is: the fixture comprises a fixture plate 51, fixed stop blocks 52, side push blocks 53 and an air cylinder 54, wherein the fixed stop blocks are fixed at the top of the fixture plate, the number of the side push blocks is consistent with that of the grinding tools 10, the side push blocks are respectively connected onto a slide rail at the top of the support in a sliding mode, a valve core enters between the fixed stop blocks and the side push blocks from the lower portion, and the air cylinder drives the side push blocks to move towards the direction close to the fixed stop blocks until the valve core is clamped tightly. Preferably, the clamping of the middle part of the valve core is completed by the V-shaped clamping groove I arranged on the inner side of the side pushing block and the V-shaped clamping groove II arranged on the inner side of the fixed stop block.
The fixed stop block and the side push block in the fixture 50 can be replaced according to the thickness of the valve core, and the telescopic stroke of the air cylinder can also be replaced according to the thickness of the valve core, so that the universality of the device is improved.
The supporting plate 40 is arranged at the bottom of the jig plate through the guide rod 120, is driven to lift by the servo ball screw pair, and the distance between the supporting plate 40 and the clamp 50 is adjusted according to the length of the valve core, so that the relative installation height of the grinding tool 10 does not need to be adjusted, and the model changing precision and efficiency of the device are improved.
Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (5)
1. The grinding device for the inner hole sealing line of the valve element is characterized by comprising grinding tools, a motor, a bearing box, a supporting plate and a clamp, wherein a plurality of grinding tools are arranged in a line and are positioned below the bearing box;
the grinding tool comprises a floating tool handle and a grinding head, the floating tool handle is fixedly connected with the shaft lever, and the connecting end of the grinding head is installed in the floating tool handle;
a vertical linear guide rail is arranged on the side surface of the support, the bearing box is connected to the linear guide rail in a sliding manner, and the motor is fixedly connected with the bearing box; a servo ball screw pair is arranged in the support and used for driving the bearing box to move up and down along the linear guide rail;
the clamp is configured to clamp a middle portion of the valve cartridge; the supporting plate is positioned below the clamp, a through hole is formed in the supporting plate, and a guide bushing is arranged in the through hole; and the bottom of the supporting plate is provided with a bottom support for covering all the guide bushings.
2. The apparatus of claim 1, wherein a support block is disposed above the carrier plate, and the guide bushing extends into the support block.
3. The grinding device for the inner hole sealing line of the valve element as claimed in claim 1, wherein the fixture comprises a fixture plate, fixed stoppers fixed on the top of the fixture plate, side push blocks in the same number as the grinding tools and slidably connected to the slide rails on the top of the support respectively, and an air cylinder for driving the side push blocks to move towards or away from the fixed stoppers.
4. The grinding device for the inner hole sealing line of the valve element as claimed in claim 3, wherein a first V-shaped clamping groove is formed in one side of the side push block corresponding to the fixed stop block, and a second V-shaped clamping groove is formed in the inner side of the fixed stop block.
5. The grinding device for the inner hole sealing line of the valve core according to claim 3, wherein the supporting plate is mounted at the bottom of the jig plate through a guide rod and is driven to lift by a servo ball screw pair.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123437085.4U CN217371740U (en) | 2021-12-30 | 2021-12-30 | Grinding device for inner hole sealing line of valve core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123437085.4U CN217371740U (en) | 2021-12-30 | 2021-12-30 | Grinding device for inner hole sealing line of valve core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217371740U true CN217371740U (en) | 2022-09-06 |
Family
ID=83096746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123437085.4U Active CN217371740U (en) | 2021-12-30 | 2021-12-30 | Grinding device for inner hole sealing line of valve core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217371740U (en) |
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2021
- 2021-12-30 CN CN202123437085.4U patent/CN217371740U/en active Active
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