CN112571220A - Tool for grinding annular belt of joint ball bearing and using method of tool - Google Patents
Tool for grinding annular belt of joint ball bearing and using method of tool Download PDFInfo
- Publication number
- CN112571220A CN112571220A CN202011428639.1A CN202011428639A CN112571220A CN 112571220 A CN112571220 A CN 112571220A CN 202011428639 A CN202011428639 A CN 202011428639A CN 112571220 A CN112571220 A CN 112571220A
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- Prior art keywords
- liner
- tool
- spherical surface
- clamping
- grinding
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/08—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section
- B24B19/11—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section for grinding the circumferential surface of rings, e.g. piston rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B41/00—Component parts such as frames, beds, carriages, headstocks
- B24B41/06—Work supports, e.g. adjustable steadies
- B24B41/067—Work supports, e.g. adjustable steadies radially supporting workpieces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The invention relates to the field of grinding joint ball bearing clamping tools, in particular to a tool for grinding a joint ball bearing ring belt and a using method thereof, aiming at solving the problems that after the joint ball bearing ring belt is ground and processed by adopting the original tool scheme, a deep contact mark is generated on the spherical surface, the subsequent polishing is difficult to remove, and the waste products in the process of grinding the ring belt are more processed and are dragged all the time The pad II is in contact with the spherical crown surface of the workpiece to realize axial and radial limiting and clamping of the workpiece.
Description
Technical Field
The invention relates to the field of grinding joint ball bearing clamping tools, in particular to a grinding joint ball bearing ring belt tool and a using method thereof.
Background
The structure of an inner ring (hereinafter referred to as a workpiece) of a certain joint bearing is shown in fig. 1. The tool and clamping mode for grinding the ring belt before optimization is shown in figure 2. The working principle is as follows: and the right nut is screwed to drive the thimble to push the workpiece to the left side, the spherical surface of the workpiece is in line contact with the edge of the inner hole on the mandrel, and the workpiece is clamped in an axial and radial limiting manner through the spherical segment protrusion in the range of the circular hole after the nut is locked.
The small and miniature workpieces of the same kind are processed by the tool shown in FIG. 2, and the requirement on processing quality can be met. However, for medium and large size workpieces, deep contact marks appear on the spherical surface of the workpiece where the spherical surface contacts with the inner hole edge of the mandrel after machining. Therefore, materials such as cushion rubberized fabric, copper sheet and the like are added between the inner hole and the workpiece in sequence to avoid marking, and trial processing experiments are carried out, but satisfactory effects are not achieved. The adhesive tape is padded, the indentation still remains, and the colloid material on the adhesive tape is adhered to the surface of the workpiece and is difficult to remove; the copper sheet is padded, and other scratches are irregular. The analysis shows that the adhesive tape is thin and has no hardness strength, and in addition, as the grinding amount of the medium-sized and large-sized workpieces is large and the grinding heat generated in the process is large, the colloid of the adhesive tape is heated to be melted and adhered to the surface of the workpiece, and the colloid is difficult to completely wipe off; although the copper sheet has a certain thickness, the copper sheet deforms after being repeatedly extruded, and tiny protrusions formed after deformation scratch the surface of a workpiece. Both residual gum and scratches affect the pre-shipment delivery of the workpiece, and are therefore judged as waste.
The production field is added with a polishing procedure to remove residual colloid or scratches. However, the polishing process has strong dependence on the operation skill of an operator, and only one experienced master has the operation ability in the existing company. The polishing quality has high requirements on the eye strength, physical strength and manipulation of an operator, the workpiece needs to be dismounted for multiple times in the process to check the effect, the workpiece is in danger of flying and living in the processes of up-and-down moving, namely clamping and dismounting the workpiece, and the original appearance of the edge of the girdle is easy to change for too long time to generate waste products. The polishing procedure is added, so that the working strength of an operator is enhanced, the production period is prolonged, the production cost is increased, and unqualified products with a certain proportion still exist.
The problem causes that the grinding annular belt process becomes a bottleneck process of the product, the workpiece delivery delay and the underpayment influence the assembly progress and the assembly rate of an assembly workshop, and the finished bearing delivery of a company is influenced. In order to improve the processing quality of the workpiece, the passive situation of finished product delivery of a company is twisted, the grinding ring belt tool is optimally designed, and clamping damage to the product in the grinding processing process is avoided.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides a fixture for grinding an annular belt of a joint ball bearing and a using method thereof, aiming at solving the problems that after the annular belt of the joint ball bearing is ground and processed by adopting the original fixture scheme, a deep contact mark is generated on the spherical surface, and subsequent polishing is difficult to remove, so that the processing of more wastes in the process of grinding the annular belt is always delayed.
The invention is implemented by the following embodiments: a grinding joint ball bearing ring belt tool comprises a mandrel and a screw;
the mandrel comprises a taper shank and a clamping end, and the taper shank and the clamping end are integrally arranged; the clamping end is arranged in a hollow mode; a first hole is formed in one end, close to the taper shank, of the clamping end, a threaded section is arranged at one end, far away from the taper shank, of the clamping end, the threaded section of the clamping end is in threaded connection with a screw, and a second hole is formed in the screw along the central axis of the screw; the first hole and the second hole are correspondingly arranged;
the tool further comprises a liner I and a liner II;
one end of the liner I is a concave spherical surface, and the other end of the liner I is connected with the first hole of the clamping end; and one end of the liner II is connected with the hole II of the screw, the other end of the liner II is an inwards concave spherical surface, and the inwards concave spherical surface at one end of the liner I is arranged corresponding to the inwards concave spherical surface at the other end of the liner II.
Further, the liner I and the liner II are both made of metal materials.
Still further, the metal material is aluminum.
Furthermore, the clamping end is provided with a notch along the tangential direction of the axial lead of the clamping end, and the end surfaces on two sides of the notch are symmetrically arranged along the axial lead of the mandrel.
Furthermore, the other end of the liner I is in a boss shape, and the spherical center of the spherical surface at one end of the liner I is arranged on the axis of the boss at the other end of the liner I;
one end of the liner II is installed in a boss mode, and the spherical center of the spherical surface of the other end of the liner II is arranged on the axis of the boss at one end of the liner II.
Furthermore, the first hole on the clamping end is coaxial with the taper shank, and the thread section of the clamping end is coaxial with the taper shank.
Furthermore, the symmetry degree of the end surfaces at the two sides of the notch along the axial lead of the mandrel is less than or equal to 0.1.
The position error between the spherical center of the spherical surface at one end of the gasket I and the axial lead of the boss at the other end of the gasket I is less than or equal to phi 0.05 mm;
the position error between the spherical center of the spherical surface at the other end of the gasket II and the axial lead of the boss at one end of the gasket II is less than or equal to phi 0.05 mm.
The coaxiality error between the hole of the clamping end and the taper shank is less than or equal to phi 0.05mm, and the coaxiality error between the threaded section of the clamping end and the taper shank of the mandrel is less than or equal to phi 0.05 mm;
the thread line of the thread section of the clamping end is 3 circles.
A use method of a grinding joint ball bearing ring belt tool specifically comprises the following steps:
the method comprises the following steps: placing the liner I into the clamping end from the notch; the other end of the liner I is arranged at the first hole;
step two: placing the liner II into the clamping end from the notch; arranging one end of the gasket II towards the threaded section of the clamping end;
step three: connecting the screw with the screw thread section of the clamping end to enable one end of the gasket II to be inserted into the second hole of the screw
Step four: a workpiece is placed in the notch of the clamping end, so that the concave spherical surface of the liner I is attached to the workpiece;
step five: and rotating the screw to enable the concave spherical surface of the liner I and the concave spherical surface of the liner II to be attached to the workpiece.
Furthermore, the diameter of the concave spherical surface of the liner I and the diameter of the concave spherical surface of the liner II are consistent with the spherical surface diameter of the workpiece, and the size error is less than or equal to +/-0.002 mm.
Has the advantages that: the optimized tool has more components than the original design scheme, but the working process is the same as the operation of the original scheme, and the complexity of the operation is not increased; due to the application of multiple threads, the quick clamping of loading and unloading is realized; the application of the spherical liner changes the linear contact of the workpiece and the tool into the surface contact, thereby avoiding clamping indentation and increasing the clamping stability. The process of the grinding ball belt is delivered smoothly, and the additional polishing process is cancelled. The processing period is shortened, the production period of the workpiece is stable, and the workpiece can be delivered to an assembly workshop as scheduled to be provided for customers.
Drawings
FIG. 1 is a schematic view of a workpiece;
FIG. 2 shows a tool and clamping method for optimizing the front grinding ring belt;
FIG. 3 is a schematic view of the present invention;
FIG. 4 is a mandrel of the present invention;
FIG. 5 is a view in the direction of line A-A in FIG. 4;
FIG. 6 is a schematic view of a gasket I of the present invention;
FIG. 7 is a schematic view of FIG. 6;
fig. 8 is a schematic view of a screw.
Detailed Description
The first embodiment is as follows: a grinding joint ball bearing ring belt tool comprises a mandrel 1 and a screw 2;
the mandrel 1 comprises a taper shank and a clamping end, and the taper shank and the clamping end are integrally arranged; the clamping end is arranged in a hollow mode; a first hole is formed in one end, close to the taper shank, of the clamping end, a threaded section is formed in one end, far away from the taper shank, of the clamping end, the threaded section of the clamping end is in threaded connection with the screw 2, and a second hole is formed in the screw 2 along the central axis of the screw; the first hole and the second hole are correspondingly arranged;
the tool further comprises a liner I4 and a liner II 5;
one end of the liner I4 is an inwards concave spherical surface, and the other end of the liner I4 is connected with the first hole of the clamping end; one end of the second liner (II 5) is connected with the second hole of the screw (2), the other end of the second liner (II 5) is an inwards concave spherical surface, and the inwards concave spherical surface at one end of the first liner (I4) and the inwards concave spherical surface at the other end of the second liner (II 5) are correspondingly arranged.
The second embodiment is as follows: the gasket I4 and the gasket II 5 are both made of metal materials.
Other embodiments are the same as the first embodiment.
The third concrete implementation mode: the metal material is aluminum.
Other embodiments are the same as the second embodiment.
The fourth concrete implementation mode: the clamping end is provided with a notch along the tangential direction of the axial lead of the clamping end, and the end surfaces on two sides of the notch are symmetrically arranged along the axial lead of the mandrel 1.
Other embodiments are the same as the first embodiment.
The fifth concrete implementation mode: the other end of the liner I4 is in a boss shape, and the spherical center of the spherical surface at one end of the liner I4 is arranged on the axis of the boss at the other end of the liner I4;
one end of the liner II 5 is in a boss shape, and the spherical center of the spherical surface at the other end of the liner II 5 is arranged on the axis of the boss at one end of the liner II 5.
The other embodiments are the same as the fourth embodiment.
The sixth specific implementation mode: the other end of the liner I4 is connected with the first hole, the hole in the clamping end is coaxially arranged with the taper shank, and the thread section of the clamping end is coaxially arranged with the taper shank.
The other embodiments are the same as the fifth embodiment.
The seventh embodiment: the symmetry degree of the end surfaces at the two sides of the notch along the axial lead of the mandrel 1 is less than or equal to 0.1.
The position error between the spherical center of the spherical surface at one end of the gasket I4 and the axial lead of the boss at the other end of the gasket I4 is less than or equal to phi 0.05 mm;
the position error between the spherical center of the spherical surface at the other end of the gasket II 5 and the axial lead of the boss at one end of the gasket II 5 is less than or equal to phi 0.05 mm.
The coaxiality error between the hole of the clamping end and the taper shank is less than or equal to phi 0.05mm, and the coaxiality error between the thread section of the clamping end and the taper shank of the mandrel 1 is less than or equal to phi 0.05 mm;
the thread line of the thread section of the clamping end is 3 circles.
The other embodiments are the same as the seventh embodiment.
The specific implementation method nine: a use method of a grinding joint ball bearing ring belt tool specifically comprises the following steps:
the method comprises the following steps: placing the liner I4 into the clamping end from the notch; the other end of the liner I4 is arranged at the first hole;
step two: placing the liner II 5 into the clamping end from the cut; one end of the gasket II 5 is arranged towards the threaded section of the clamping end;
step three: connecting the screw 2 with the thread section of the clamping end to ensure that one end of the gasket II 5 is inserted into the second hole of the screw 2
Step four: a workpiece 3 is placed in the notch of the clamping end, so that the concave spherical surface of the liner I4 is attached to the workpiece 3;
step five: and rotating the screw 2 to ensure that the concave spherical surface of the liner I4 and the concave spherical surface of the liner II 5 are both attached to the workpiece 3.
The specific implementation method nine: the diameter of the concave spherical surface of the liner I4 and the diameter of the concave spherical surface of the liner II 5 are consistent with the spherical surface diameter of the workpiece 3, and the size error is less than or equal to +/-0.002 mm.
Other embodiments are the same as the ninth embodiment.
The working principle is as follows: according to the principle of increasing the contact area and reducing the pressure under the same pressure, the spherical liner is additionally arranged between the workpiece and the mandrel, the linear contact is changed into the surface contact, and the liner is made of soft metal aluminum materials. Influenced by the radial size of the spherical crown surface of the liner, the range of advance and retreat of the screw required in the workpiece clamping process is large, the convenience of operation is considered, and the design of multiple threads is adopted so as to meet the clamping stability and the operability of quick disassembly.
An aluminum liner I is arranged in a core shaft hole, an aluminum liner II is arranged at the left end of a screw, a nut at the right end is screwed to drive the liner II to push a workpiece to the left side, the spherical surface of the workpiece is in contact with the liner I on the core shaft, and the liner I and the pad II are in contact with the spherical crown surface of the workpiece to realize axial and radial limiting and clamp the workpiece.
Claims (9)
1. A grinding joint ball bearing ring belt tool comprises a mandrel (1) and a screw (2);
the mandrel (1) comprises a taper shank and a clamping end, and the taper shank and the clamping end are integrally arranged; the clamping end is arranged in a hollow mode; a first hole is formed in one end, close to the taper shank, of the clamping end, a threaded section is formed in one end, far away from the taper shank, of the clamping end, the threaded section of the clamping end is in threaded connection with the screw (2), and a second hole is formed in the screw (2) along the central axis of the screw; the first hole and the second hole are correspondingly arranged;
the method is characterized in that: the tool further comprises a liner I (4) and a liner II (5);
one end of the liner I (4) is an inwards concave spherical surface, and the other end of the liner I (4) is connected with the first hole of the clamping end; the one end of the liner II (5) is connected with the hole II of the screw (2), the other end of the liner II (5) is an inwards concave spherical surface, and the inwards concave spherical surface at one end of the liner I (4) is arranged corresponding to the inwards concave spherical surface at the other end of the liner II (5).
2. The tool for grinding the annular belt of the spherical ball bearing according to claim 1, wherein the tool comprises: the liner I (4) and the liner II (5) are both made of metal materials.
3. The tool for grinding the annular belt of the spherical ball joint according to claim 2, wherein the tool comprises: the metal material is aluminum.
4. The tool for grinding the annular belt of the spherical ball bearing according to claim 1, wherein the tool comprises: the clamping end is provided with a notch along the tangential direction of the axial lead of the clamping end, and the end surfaces on the two sides of the notch are symmetrically arranged along the axial lead of the mandrel (1).
5. The tool for grinding the annular belt of the spherical ball joint according to claim 4, wherein the tool comprises: the other end of the gasket I (4) is in a boss shape, and the spherical center of the spherical surface at one end of the gasket I (4) is arranged on the axis of the boss at the other end of the gasket I (4);
one end of the second gasket (5) is in a boss shape, and the spherical center of the spherical surface at the other end of the second gasket (5) is arranged on the axis of the boss at one end of the second gasket (5).
6. The tool for grinding the annular belt of the spherical ball joint according to claim 5, wherein the tool comprises: the first hole on the clamping end is coaxial with the taper shank, and the thread section of the clamping end is coaxial with the taper shank.
7. The tool for grinding the annular belt of the spherical ball joint according to claim 6, wherein the tool comprises: the symmetry degree of the end surfaces at the two sides of the notch along the axial lead of the mandrel (1) is less than or equal to 0.1.
The position error between the spherical center of the spherical surface at one end of the gasket I (4) and the axial lead of the boss at the other end of the gasket I (4) is less than or equal to phi 0.05 mm;
the position error between the spherical center of the spherical surface at the other end of the gasket II (5) and the axial lead of the boss at one end of the gasket II (5) is less than or equal to phi 0.05 mm.
The coaxiality error between the first hole of the clamping end and the taper shank is less than or equal to phi 0.05mm, and the coaxiality error between the threaded section of the clamping end and the taper shank of the mandrel (1) is less than or equal to phi 0.05 mm;
the thread line of the thread section of the clamping end is 3 circles.
8. The use method of the grinding joint ball bearing ring belt tool is characterized in that: the use of the endless belt tool according to any one of claims 1 to 8 for clamping a workpiece specifically comprises the steps of:
the method comprises the following steps: placing the liner I (4) into the clamping end from the notch; the other end of the liner I (4) is arranged at the first hole;
step two: placing the liner II (5) into the clamping end from the cut; one end of the gasket II (5) is arranged towards the threaded section of the clamping end;
step three: connecting the screw (2) with the threaded section of the clamping end, and inserting one end of the liner II (5) into a second hole of the screw (2);
step four: a workpiece is placed in the notch of the clamping end, so that the concave spherical surface of the liner I (4) is attached to the workpiece;
step five: and rotating the screw (2) to ensure that the concave spherical surface of the liner I (4) and the concave spherical surface of the liner II (5) are both attached to the workpiece.
9. The use method of the grinding joint ball bearing ring belt tool is characterized in that: the diameter of the concave spherical surface of the liner I (4) and the diameter of the concave spherical surface of the liner II (5) are consistent with the spherical surface diameter of the workpiece, and the size error is less than or equal to +/-0.002 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011428639.1A CN112571220A (en) | 2020-12-09 | 2020-12-09 | Tool for grinding annular belt of joint ball bearing and using method of tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011428639.1A CN112571220A (en) | 2020-12-09 | 2020-12-09 | Tool for grinding annular belt of joint ball bearing and using method of tool |
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| Publication Number | Publication Date |
|---|---|
| CN112571220A true CN112571220A (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011428639.1A Pending CN112571220A (en) | 2020-12-09 | 2020-12-09 | Tool for grinding annular belt of joint ball bearing and using method of tool |
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| CN (1) | CN112571220A (en) |
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| CN211136363U (en) * | 2019-12-02 | 2020-07-31 | 杭州临安制钳有限公司 | End face supporting device for bearing machining |
| CN111189636A (en) * | 2020-01-10 | 2020-05-22 | 中国航空综合技术研究所 | Clamp system for life test of joint bearing |
| CN212059357U (en) * | 2020-05-11 | 2020-12-01 | 中国人民解放军陆军装甲兵学院 | Clamp suitable for self-lubricating oscillating bearing swing wear test under light-load working condition |
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Application publication date: 20210330 |