Expandable end face grinding tool
By designing the combination of the swellable kit and the mandrel body, the problem that existing grinding tools cannot effectively fix the inner diameter of parts with tolerances of different sizes is solved, and the stable fixation and efficient grinding of parts are achieved, ensuring the verticality and finish of parts are simplified. operate.
Patent Information
- Application Number
- CN202421052149.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-13
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-13
AI Technical Summary
When existing grinding tools grind the end faces of parts, they cannot effectively fix the inner diameter of parts with different size tolerances, resulting in poor perpendicularity and finish of the end faces of the processed parts, which cannot meet the usage requirements.
A swellable end-face grinding tool including a mandrel body, a grinding disc and a swellable kit is designed. The mandrel body is fixed by connecting the inner diameter of the part through the swellable kit, and the end-face of the part is grounded through a detachable grinding disc. Ensure the stability and finish of the parts.
It realizes stable fixation and efficient grinding of parts with tolerances of different sizes, ensuring that the verticality and finish of the parts meet the requirements of use, and simplifying the operation process.
Smart Images
Figure CN222345195U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the field of grinding technology, and in particular to an expandable end face grinding tool. Background Art
[0002] At present, when mechanical cutting is performed on the end faces and inner diameters of parts, if the end faces of parts have high requirements on the perpendicularity and smoothness of the inner diameter, there will be errors in the inner diameter and end faces of the processed parts. At this time, it is necessary to use a grinding tool to grind the end faces of the parts. Before grinding the end faces of the parts, the existing grinding tools need to fix the core shaft on the grinding tool in the inner diameter of the parts, and then grind the end faces of the parts.
[0003] However, the dimensional tolerance of the inner diameter of the part is limited by processing technology, and the dimensional tolerance cannot be completely consistent. Therefore, the standard size mandrel on the grinding tool cannot meet the fixing requirements of the part, and the operation is more troublesome. In addition, when grinding the end face of the part, the verticality and smoothness of the end face of the part ground by the grinding tool are poor, and cannot meet the use requirements of the part. Utility Model Content
[0004] In order to solve the above technical problems, the present application provides an expandable end surface grinding tool
[0005] The technical solution provided in this application is described below:
[0006] The present application provides an expandable end face grinding tool, comprising: a mandrel body, a grinding disc and an expandable kit;
[0007] The expandable sleeve is installed at one end of the mandrel body, and the grinding disc is detachably installed at the other end of the mandrel body. The mandrel body cooperates with the expandable sleeve to be connected to the inner diameter of the part so that the mandrel body is fixed on the part. A grinding area is formed between the grinding disc and the expandable sleeve, and the grinding disc is used to grind the end face of the part in the grinding area.
[0008] Optionally, a cavity, a first orifice and a second orifice are provided inside the core shaft body, the first orifice is provided on one side of the core shaft body, the second orifice is provided on the other side of the core shaft body, and the first orifice and the second orifice are connected to the cavity.
[0009] Optionally, the expandable sleeve includes a thin-walled sleeve and a plunger assembly, the thin-walled sleeve is connected to the cavity, the cavity is filled with liquid plastic, the plunger assembly is installed at the first orifice and the second orifice, and the thin-walled sleeve cooperates with the liquid plastic and the plunger assembly to be connected and fixed to the inner diameter of the part.
[0010] Optionally, the plunger assembly includes a first plunger and a second plunger, the first plunger is installed at the first orifice, and the second plunger is installed at the second orifice.
[0011] Optionally, the aperture of the second orifice is larger than the aperture of the first orifice.
[0012] Optionally, a first screw is disposed inside the first hole, the first screw is movably installed in the first hole, and the first screw is disposed on one side of the first plunger.
[0013] Optionally, a preset distance is set between the first screw and the first plunger.
[0014] Optionally, the inner diameter of the grinding disc and the outer diameter of the mandrel body are connected in a clearance fit.
[0015] Optionally, a boss is provided on the outside of the grinding disc, the boss and the grinding disc are integrally formed, a connecting screw hole is provided in the boss, and the connecting screw hole is connected to the handle.
[0016] Optionally, the first plunger, the second plunger and the cavity are sealed.
[0017] It can be seen from the above technical solutions that this application has the following advantages:
[0018] The expandable end face grinding tool of the present application is provided with a mandrel body, a grinding disc and an expandable kit; wherein, the expandable kit is installed at one end of the mandrel body, and the grinding disc is detachably installed at the other end of the mandrel body. The mandrel body cooperates with the expandable kit to be connected to the inner diameter of the part so that the mandrel body is fixed on the part, and a grinding area is formed between the grinding disc and the expandable kit, and the grinding disc is used to grind the end face of the part in the grinding area.
[0019] It can be further known that, under the action of the mandrel body and the expandable kit, the mandrel body can be connected and fixed to the inner diameter of the part with different dimensional tolerances. After the connection is completed, the stability between the inner diameter of the part and the mandrel body can be guaranteed. Since the grinding disc and the mandrel body are detachably connected, different grinding discs can be selected to process and grind the end face of the part, thereby ensuring the smoothness and verticality of the end face of the part, so that the part meets the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the technical solution in the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.
[0021] Figure 1 A cross-sectional view of an expandable end face grinding tool of the present application;
[0022] Figure 2 A schematic diagram of a part loaded on the end face grinding tool that can be expanded in this application;
[0023] Figure 3 A schematic diagram of the three-dimensional structure of the expandable end face grinding tool of the present application;
[0024] Figure 4 Another schematic diagram of the three-dimensional structure of the expandable end face grinding tool of the present application;
[0025] In the figure: 1, grinding disc; 2, spindle body; 3, first screw; 4, first plunger; 5, liquid plastic; 6, thin-walled sleeve; 7, second plunger; 8, connecting screw hole; 9, boss; 10, handle; 11, part; 12, second screw. DETAILED DESCRIPTION
[0026] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only used to illustrate the relative positional relationships between the various components or components, and do not particularly limit the specific installation orientations of the various components or components.
[0027] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.
[0028] In addition, the terms "installed", "set", "provided with", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0029] In addition, the structures, proportions, sizes, etc. drawn in the drawings in the present application are only used to match the contents disclosed in the specification for the technical personnel in this field to understand and read, and are not used to limit the restrictive conditions under which the present application can be implemented. Therefore, they have no substantive technical significance. Any structural modification, change in proportional relationship or adjustment of size should still fall within the scope of the technical content disclosed in the present application without affecting the effects and purposes that can be achieved by the present application.
[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
[0031] Since the inner diameter tolerance on the parts is limited by processing technology, the size cannot be completely consistent. Therefore, the standard size mandrel on the grinding tool cannot meet the requirement of fixing the mandrel in the part, which makes the operation more troublesome. When grinding the end face of the part, the verticality and smoothness of the end face of the part ground by the grinding tool are poor and cannot meet the use requirements of the part.
[0032] Based on this, the present application provides an expandable end face grinding tool, which can connect and fix parts with different dimensional tolerances under the action of the core shaft body and the expandable kit. After the connection is completed, the stability between the parts and the core shaft body can be guaranteed. Since the grinding disc and the core shaft body are detachably connected, different grinding discs can be selected to grind the end face of the part, thereby ensuring the smoothness and verticality of the end face of the part, so that the part meets the use requirements.
[0033] See also Figures 1 to 4 The present application provides an expandable end face grinding tool, comprising: a mandrel body 2, a grinding disc 1 and an expandable kit; the expandable kit is installed at one end of the mandrel body 2, and the grinding disc 1 is detachably installed at the other end of the mandrel body 2, the mandrel body 2 cooperates with the expandable kit to be connected to the inner diameter of the part 11, so that the mandrel body 2 is fixed on the part, a grinding area is formed between the grinding disc 1 and the expandable kit, and the grinding disc 1 is used to grind the end face of the part 11 in the grinding area.
[0034] In the embodiment of the present application, one end of the mandrel body 2 is connected to an expandable sleeve, and the mandrel body 2 can be connected to the inner diameter of a part 11 with different dimensional tolerances through the expandable sleeve, so that when grinding the end face of the part 11 with different inner diameter dimensional tolerances, the mandrel body 2 can be fixed on the part 11 with different inner diameter dimensional tolerances through the expandable sleeve. It should be noted that after being connected and fixed by the expandable sleeve, a whole is formed between the part 11 and the mandrel body 2, and the formed whole cannot be disassembled. After determining that the part 11 is connected and fixed to the mandrel body 2, a corresponding grinding disc 1 is selected according to the end face of the part 11, and the grinding disc 1 is installed at the other end of the mandrel body 2, wherein the connection between the grinding disc 1 and the mandrel body 2 is a clearance fit, so that the grinding disc 1 can rotate on the mandrel body 2, and when the grinding disc 1 rotates, the end face of the part 11 in the grinding area can be ground, thereby ensuring the smoothness and verticality of the surface of the part 11 after grinding.
[0035] Among them, the expansion kit is connected and fixed with the parts 11 of different size tolerances. Specifically, the core shaft body 2 is provided with a cavity, a first orifice and a second orifice. The first orifice is provided on one side of the core shaft body 2, and the second orifice is provided on the other side of the core shaft body 2. The first orifice and the second orifice are connected to the cavity, and the cavity is filled with liquid plastic 5. The expansion kit includes a thin-walled sleeve 6 and a plunger assembly. The thin-walled sleeve 6 is connected to the cavity. The plunger assembly is installed at the first orifice and the second orifice. Specifically, the plunger assembly includes a first plunger 4 and a second plunger 7. The first plunger 4 is installed At the first orifice, the second plunger 7 is installed at the second orifice. Since the aperture of the second orifice is larger than that of the first orifice, the liquid plastic 5 is injected into the cavity of the core shaft body 2 through the first orifice. During the injection process, the second plunger 7 blocks the second orifice to prevent the liquid plastic 5 from flowing out of the second orifice. The liquid plastic 5 entering the cavity will also flow into the thin-walled sleeve 6. After the injection is completed, the first plunger 4 is installed in the first orifice. The first plunger 4, the second plunger 7 and the cavity are sealed. A second screw is installed on one side of the second plunger 7 to ensure that the cavity is in a sealed state.
[0036] Afterwards, the part 11 is sleeved on the outside of the thin-walled sleeve 6 of the core shaft body 2, and the end face of the part 11 to be processed falls into the grinding area, wherein a first screw 3 is arranged inside the first orifice, and the first screw 3 is movably installed in the cavity, and the first screw 3 is arranged on one side of the first plunger 4, and a preset distance is arranged between the first screw 3 and the first plunger 4. The staff rotates the first screw 3 to move the first screw 3 in the cavity, and after the first screw 3 contacts the first plunger 4 and pushes the first plunger 4 to move in the direction of the second orifice. It should be noted that before rotating the first screw 3 to move in the direction of the first plunger 4, the second screw 12 should be rotated to move in the direction of the second plunger 7 to fix the position of the second plunger 7 in the cavity, thereby ensuring the stability of the second plunger 7 in the cavity, and avoiding squeezing the liquid plastic 5 when the first screw 3 is rotated to push the first plunger 4, thereby pushing the second plunger 7 to move outward.
[0037] In this state, the liquid plastic 5 in the cavity will be squeezed and apply pressure to the thin-walled sleeve 6. Under the action of the liquid plastic 5, the thin-walled sleeve 6 will expand outward, so that the thin-walled sleeve 6 is tightly connected with the inner diameter of the part. When the thin-walled sleeve 6 is in close contact with the part 11 and forms a whole, the gap between the part and the core shaft body 1 is eliminated, which can facilitate the subsequent processing of the end face of the part.
[0038] After the part 11 is fixed on the mandrel body 2, the corresponding grinding disc 1 is selected according to the part 11 to be ground, and the grinding disc 1 is installed at the other end of the mandrel body 2. The end face of the part 11 in the grinding area is ground by rotating the grinding disc 1, wherein a boss 9 is provided on the outside of the grinding disc 1, and the boss 9 and the grinding disc 1 are integrally formed, which means that the connection between the boss 9 and the grinding disc 1 is a non-detachable connection, such as welding or integral casting, which is not specifically limited here. A connecting screw hole 8 is provided in the boss 9, and the connecting screw hole 8 is connected to the handle 10. The staff rotates the grinding disc 1 through the handle 10 so that the grinding disc 1 grinds the end face of the part 11, thereby ensuring the verticality and smoothness of the end face of the part 11.
[0039] Among them, the first plunger 4, the second plunger 7 and the cavity are sealed. It should be noted that the first plunger 4, the second plunger 7 and the cavity are clearance-fitted, that is, the first plunger 4 and the second plunger 7 can move in the cavity, but since the gap between the first plunger 4 and the second plunger 7 and the cavity is small, the liquid plastic in the cavity cannot flow out through the gap, thereby ensuring the sealing between the first plunger 4, the second plunger 7 and the cavity.
[0040] It should be noted that the above description of the disclosed embodiments enables professionals and technicians in the field to implement or use the present application. Various modifications to these embodiments will be apparent to professionals and technicians in the field, and the general principles defined herein can be implemented in other embodiments without departing from the scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. An expandable end surface grinding tool, characterized in that: include: Mandrel body, grinding disc and expandable kit; The expandable sleeve is installed at one end of the mandrel body, and the grinding disc is detachably installed at the other end of the mandrel body. The mandrel body cooperates with the expandable sleeve to be connected to the inner diameter of the part so that the mandrel body is fixed on the part. A grinding area is formed between the grinding disc and the expandable sleeve, and the grinding disc is used to grind the end face of the part in the grinding area.
2. The expandable end surface grinding tool according to claim 1, characterized in that: A cavity, a first orifice and a second orifice are arranged inside the core shaft body. The first orifice is arranged on one side of the core shaft body, and the second orifice is arranged on the other side of the core shaft body. The first orifice and the second orifice are connected to the cavity.
3. The expandable end surface grinding tool according to claim 2, characterized in that: The expandable sleeve includes a thin-walled sleeve and a plunger assembly, the thin-walled sleeve is connected to the cavity, the cavity is filled with liquid plastic, the plunger assembly is installed at the first orifice and the second orifice, and the thin-walled sleeve cooperates with the liquid plastic and the plunger assembly to be connected and fixed to the inner diameter of the part.
4. The expandable end surface grinding tool according to claim 3, characterized in that: The plunger assembly includes a first plunger and a second plunger, the first plunger being mounted at the first orifice and the second plunger being mounted at the second orifice.
5. The expandable end surface grinding tool according to claim 2, characterized in that: The aperture of the second aperture is larger than the aperture of the first aperture.
6. The expandable end surface grinding tool according to claim 4, characterized in that: A first screw is disposed inside the first hole. The first screw is movably installed in the first hole, and the first screw is disposed on one side of the first plunger.
7. The expandable end surface grinding tool according to claim 6, characterized in that: A preset distance is set between the first screw and the first plunger.
8. The expandable end surface grinding tool according to claim 1, characterized in that: The inner diameter of the grinding disc and the outer diameter of the mandrel body are connected in a clearance fit.
9. The expandable end surface grinding tool according to claim 7, characterized in that: A boss is arranged on the outside of the grinding disc, and the boss and the grinding disc are integrally formed. A connecting screw hole is arranged in the boss, and the connecting screw hole is connected to the handle.
10. The expandable end surface grinding tool according to claim 4, characterized in that: The first plunger, the second plunger and the cavity are sealed.