Honing four-claw centering clamp
By designing a honing four-jaw centering fixture, utilizing a cylindrical structure connected by a hinge shaft and pneumatically controlled jaws, the problem of difficult machining of small workpieces was solved, achieving automatic centering and clamping, and improving machining efficiency.
Patent Information
- Application Number
- CN202423287361.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-12-31
AI Technical Summary
The lack of honing machine tool fixtures suitable for small workpieces in the existing technology leads to difficult and time-consuming processing.
A honing four-jaw centering fixture was designed, comprising an inner shell, an outer shell, and a middle shell with a cylindrical structure, connected by a hinge shaft with a gap, allowing the middle shell and the inner shell to rotate. The jaws are pneumatically controlled to achieve automatic centering and clamping of the workpiece. The compact structure includes four jaw sleeves and jaws, with the ends of the jaws contacting the inclined surface of the piston. An air source is used to push the jaws to clamp the workpiece.
It achieves automatic centering and clamping of small workpieces, has a compact structure, is easy to operate, is suitable for processing a variety of workpieces, and improves processing efficiency.
Smart Images
Figure CN223670962U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a clamp especially a tool clamp for small honing machine tool, in particular to a honing four-jaw centering clamp. BACKGROUND
[0002] Honing machine tool is the commonly used equipment of machining, and the workpiece is clamped through tool during machining, and the tool and the workpiece are in a certain floating state during the machining process. SUMMARY
[0003] The utility model discloses a kind of honing four-jaw centering clamps, and the overall structure is compact, small, can adapt to multiple varieties workpiece automatic centering, clamping, floating effect is good, easy to operate, more suitable for the honing four-jaw centering clamp of small honing machine tool.
[0004] The utility model discloses a honing four-jaw centering clamp, including the inner layer shell of tubular structure, middle layer shell is sleeved on the upper portion of inner layer shell outside, outer layer shell is sleeved on the outside of middle layer shell;Outer layer shell and middle layer shell are connected by first hinged axle and have gap, so that middle layer shell can move along first hinged axle and rotate relative to outer layer shell, first hinged axle has two and is symmetrically arranged;Middle layer shell and inner layer shell are connected by second hinged axle and have gap, so that inner layer shell can move along second hinged axle and rotate relative to middle layer shell, second hinged axle has two and is symmetrically arranged;Outer sleeve is fixed in the lower portion of inner layer shell outside, and piston is arranged between outer sleeve and inner layer shell, and the cavity is formed between piston and outer sleeve, and the cavity is communicated with the air hole on the lower end surface of inner layer shell through the passage on outer sleeve and inner layer shell;Spring is arranged between the lower end of piston and inner layer shell;Four clamping jaw sleeves that are evenly distributed along circumference are fixed on inner layer shell, clamping jaw is inserted in each clamping jaw sleeve, and guide column is arranged on inner layer shell, and the end of guide column is inserted into long slot on clamping jaw;The end of clamping jaw is in contact with the upper edge of piston with inclined surface, and is connected with dovetail groove structure.
[0005] The utility model discloses a honing four-jaw centering clamp, and the overall structure is compact, small, can adapt to multiple varieties workpiece automatic centering, clamping, floating effect is good, easy to operate, more suitable for the honing four-jaw centering clamp of small honing machine tool. BRIEF DESCRIPTION OF DRAWINGS
[0006] Figure 1is the cross-sectional view of the embodiment of the utility model.
[0007] Figure 2 is Figure 1 is the cross-sectional view of the embodiment of the utility model.
[0008] Figure 3 is Figure 1 is the cross-sectional view of the embodiment of the utility model. Embodiment
[0009] As Figure 1 , 2 , 3: the utility model discloses a honing four jaw centering fixture, including the inner layer shell 5 of the cylindrical structure, the middle layer shell 3 is sleeved on the upper portion of the outer side of inner layer shell 5, and the outer layer shell 1 is sleeved on the outer side of middle layer shell 3. The outer layer shell 1 and the middle layer shell 3 are connected through the first hinge shaft 2 and have a gap, so that the middle layer shell 3 can move along the first hinge shaft 2 and rotate relative to the outer layer shell 1, and the first hinge shaft 2 has two and is symmetrically arranged. The middle layer shell 3 and the inner layer shell 5 are connected through the second hinge shaft 4 and have a gap, so that the inner layer shell 5 can move along the second hinge shaft 4 and rotate relative to the middle layer shell 3, and the second hinge shaft 4 has two and is symmetrically arranged. The outer sleeve 9 is fixed on the lower portion of the outer side of inner layer shell 5, the piston 6 is arranged between the outer sleeve 9 and the inner layer shell 5, the cavity 14 is formed between the piston 6 and the outer sleeve 9, the cavity 14 is connected with the air hole 10 on the lower end face of the inner layer shell 5 through the passage 11 on the outer sleeve 9 and the inner layer shell 5. The spring 7 is arranged between the lower end of the piston 6 and the inner layer shell 5. The four clamping jaw sleeves 13 that are uniformly distributed in the circumferential direction are fixed on the inner layer shell 5, and the clamping jaw 8 is inserted into each clamping jaw sleeve 13. The guide column 12 is arranged on the inner layer shell 5, the end of the guide column 12 passes through the clamping jaw sleeve 13 and is inserted into the long slot on the clamping jaw 8. The end of the clamping jaw 8 is in contact with the upper edge of the piston 6 and is connected in dovetail groove structure. The first hinge shaft 2 and the second hinge shaft 4 are staggered by 90 degrees in the circumferential direction, and the clamping jaw 8 and the first hinge shaft 2 are staggered by 45 degrees in the circumferential direction.
[0010] The honing four jaw centering fixture of the utility model is installed on the machine tool workbench through the mounting seat on the outer layer shell 1, the air hole 10 on the inner layer shell 5 is connected with the pneumatic control device, the piston 6 moves inwardly and pushes the four clamping jaws 8 under the action of the spring 7 through the dovetail structure at the inclined surface, and the workpiece is clamped and centered synchronously. When loosening, the piston 6 is pushed down by the air source, and the four clamping jaws 8 move back to loosen the workpiece. During the machining process, the outer layer shell 1 is relatively fixed, and other components and the workpiece are in a floating state. It has the advantages of compact and small overall structure, can adapt to automatic centering and clamping of various workpieces, has good floating effect, is convenient to operate, and is more suitable for small honing machine tools.
Claims
1. A honing four jaw centering fixture characterized by: The inner shell (5) including a cylindrical structure, the middle shell (3) is sleeved on the outer side upper part of the inner shell (5), the outer shell (1) is sleeved on the outer side of the middle shell (3); the outer shell (1) and the middle shell (3) are connected through the first hinge shaft (2) and have a gap, so that the middle shell (3) can move along the first hinge shaft (2) and rotate relative to the outer shell (1), the first hinge shaft (2) has two and is symmetrically arranged; the middle shell (3) and the inner shell (5) are connected through the second hinge shaft (4) and have a gap, so that the inner shell (5) can move along the second hinge shaft (4) and rotate relative to the middle shell (3), the second hinge shaft (4) has two and is symmetrically arranged; the outer sleeve (9) is fixed on the outer side lower part of the inner shell (5), the piston (6) is arranged between the outer sleeve (9) and the inner shell (5), the cavity (14) is formed between the piston (6) and the outer sleeve (9), the cavity (14) is communicated with the air port (10) on the lower end surface of the inner shell (5) through the passage (11) on the outer sleeve (9) and the inner shell (5); the spring (7) is arranged between the lower end of the piston (6) and the inner shell (5); the four clamping jaw sleeves (13) are fixed on the inner shell (5) and are uniformly distributed along the circumference, the clamping jaw (8) is inserted into each clamping jaw sleeve (13), the guide column (12) is arranged on the inner shell (5), the end of the guide column (12) is inserted into the long slot on the clamping jaw (8); the end of the clamping jaw (8) is in contact with the upper edge of the piston (6) and is in dovetail groove structure connection.