A quick-change horizontal honing fixture

Abstract

This invention relates to a quick-change horizontal honing fixture, comprising a support mechanism and a clamping mechanism. The clamping mechanism includes a clamping core mounted on the support mechanism, the clamping core having a receiving cavity for accommodating a workpiece. The clamping mechanism also includes a connecting member with a hollow cavity disposed on the side of the clamping core and a locking member slidably disposed within the connecting member. A through groove is formed on the clamping core corresponding to the hollow cavity of the connecting member. One end of the locking member can retract into the through groove or extend into the interior of the clamping core through the through groove, so that one end of the locking member can separate from or engage with a hole in the workpiece. The clamping mechanism also includes a first elastic member, which is used to make the locking member tend to engage with the hole in the workpiece. Using this horizontal honing fixture enables quick workpiece change, reduces workpiece change time, and increases work efficiency.

Description

Technical Field

[0001] This invention belongs to the field of honing technology, specifically relating to a quick-change horizontal honing fixture. Background Technology

[0002] In horizontal honing, the clamping of hollow cylindrical workpieces typically involves inserting the workpiece into a clamping core. The clamping core contains a soft inner liner that fits the workpiece, and a locking sleeve is fitted onto the outside of the core. A screw is threaded onto the locking sleeve, and tightening the screw causes the clamping core to contract to a certain extent, thus clamping the workpiece. However, this method is very inconvenient when changing workpieces, requiring manual tightening of the screws each time, resulting in cumbersome clamping and low work efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a quick-change horizontal honing fixture with high working efficiency and machining accuracy.

[0004] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0005] A quick-change horizontal honing fixture is provided for honing workpieces. The workpiece has a hole on its side. The horizontal honing fixture includes a support mechanism and a clamping mechanism disposed on the support mechanism. The clamping mechanism includes a clamping core disposed on the support mechanism. The clamping core has a receiving cavity for accommodating the workpiece. The clamping mechanism also includes a connector disposed on the side of the clamping core and having a hollow cavity, and a locking member slidably disposed within the connector. The clamping core has a through groove corresponding to the position of the hollow cavity of the connector. One end of the locking member can be retracted into the through groove or extend into the interior of the clamping core through the through groove, so that one end of the locking member can be separated from or engaged with the hole of the workpiece.

[0006] The clamping mechanism further includes a first elastic element disposed between the locking member and the connecting member, the first elastic element being used to cause the locking member to engage with the hole in the workpiece.

[0007] In some specific embodiments, the locking member includes a body portion located in the hollow inner cavity, an operating portion formed at one end of the body portion and exposed to the connector, and a locking portion formed at the other end of the body portion. The locking portion can be retracted into the through groove or extended into the interior of the clamping core through the through groove.

[0008] In some specific embodiments, a counterweight is provided on the outer side wall of the clamp core opposite to the connector.

[0009] In some specific embodiments, the first elastic element is a spring.

[0010] In some specific embodiments, the inner wall of the clamping core is provided with a positioning step, and the outer wall of the workpiece has a mating part. When the workpiece is clamped into the clamping core, the mating part of the workpiece abuts against the positioning step.

[0011] According to some embodiments of the present invention, the support mechanism includes a base, a first support member and a second support member disposed on opposite sides of the base, a connecting ring rotatably and slidably connected to the first support member and the second support member via a first shaft and a second shaft respectively, a clamping core being movably disposed within the connecting ring, and a first guide post and a second guide post being respectively provided on the upper and lower sides of the clamping core, the upper part of the first guide post passing through the upper part of the connecting ring and rotatably and slidably disposed with the connecting ring, and the lower part of the second guide post passing through the lower part of the connecting ring and rotatably and slidably disposed with the connecting ring;

[0012] The support mechanism also includes an elastic support component disposed below the connecting ring and used to support the second guide post.

[0013] In some specific embodiments, the elastic support assembly includes a support plate connected to the base, a threaded sleeve fixedly disposed to the support plate and extending in a vertical direction, an adjusting screw threadedly connected to the lower end of the threaded sleeve, a second elastic element and a stop element sequentially disposed within the threaded sleeve and located above the adjusting screw, the second elastic element being located between the adjusting screw and the stop element, the stop element being movably disposed along the length direction of the threaded sleeve, the lower end of the second guide post being movably inserted into the threaded sleeve and abutting against the stop element, and the adjusting screw being used to adjust the elastic force of the second elastic element.

[0014] In some specific embodiments, the blocking member is a steel ball, and the second elastic member is a compression spring;

[0015] The threaded sleeve includes a sleeve portion fixedly disposed with the support plate and a nut fixedly connected to the lower end of the sleeve portion. The adjusting screw is threadedly connected to the nut and the upper end of the adjusting screw is inserted into the sleeve portion.

[0016] In some specific embodiments, the first shaft and the second shaft extend horizontally, and the first guide post and the second guide post extend vertically.

[0017] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0018] When changing workpieces using the quick-change horizontal honing fixture of this invention, simply pull the locking member to disengage it from the hole on the side of the workpiece, change the workpiece, and then release the locking member. The locking member will then reset under the action of the first elastic member and insert into the hole on the side of the workpiece, thus fixing the workpiece relative to the fixture core. This allows for quick workpiece changes, reducing workpiece replacement time and increasing work efficiency. Furthermore, the locking member and the hole on the side of the workpiece can achieve a high-precision fit, which helps improve the honing accuracy. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a quick-change horizontal honing fixture according to a representative embodiment of the present invention;

[0020] Figure 2 for Figure 1 A schematic diagram of the quick-change horizontal honing fixture from another angle;

[0021] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 for Figure 1 A schematic diagram of the fixture core of a quick-change horizontal honing fixture;

[0023] In the diagram: 1. Workpiece; 2. Clamping core; 3. Connecting component; 4. Locking component; 5. First elastic component; 6. Counterweight; 7. Positioning step; 8. Base; 9. First support component; 10. Second support component; 11. Connecting ring; 12. First shaft; 13. Second shaft; 14. First guide post; 15. Second guide post; 16. Adjusting screw; 17. Sleeve section; 18. Second elastic component; 19. Blocking component; 20. Support plate; 21. Nut. Detailed Implementation

[0024] The technical solutions of the present invention will be described in detail below with reference to specific embodiments, so that those skilled in the art can better understand and implement the technical solutions of the present invention, but the present invention is not limited to the scope of the examples described.

[0025] See Figures 1-4 The quick-change horizontal honing fixture shown is used for clamping workpiece 1, which has a hole on its side.

[0026] The horizontal honing fixture includes a support mechanism and a clamping mechanism disposed on the support mechanism. The clamping mechanism includes a clamping core 2 disposed on the support mechanism. The clamping core 2 has a receiving cavity for accommodating the workpiece 1. The receiving cavity has a high degree of fit with the workpiece 1.

[0027] The clamping mechanism also includes a connector 3 with a hollow inner cavity disposed on the side of the clamping core 2 and a locking member 4 slidably disposed in the connector 3. The clamping core 2 has a through groove corresponding to the hollow inner cavity of the connector 3. One end of the locking member 4 can be retracted into the channel or extended into the interior of the clamping core 2 through the through groove, so that one end of the locking member 4 can be separated from or engaged with the hole of the workpiece 1.

[0028] The clamping mechanism also includes a first elastic element 5 disposed between the locking element 4 and the connecting element 3. The first elastic element 5 is used to cause the locking element 4 to extend into the interior of the clamping core 2 through the through groove. The first elastic element 5 is a spring disposed inside the connecting element 3. By pulling the locking element 4, one end of the locking element 4 retracts into the through groove, making it easier for the workpiece 1 to be inserted into the interior of the clamping core 2. When the locking element 4 is released, the locking element 4 automatically resets under the action of the first elastic element 5, so that one end of the locking element 4 is inserted into the hole on the side of the workpiece 1, realizing quick clamping of the workpiece 1.

[0029] The locking member 4 includes a body portion located inside the connector 3, an operating portion formed at one end of the body portion and exposed outside the connector 3, and a locking portion formed at the other end of the body portion. The locking portion can be retracted into the through groove or extended into the interior of the clamping core 2 through the through groove.

[0030] A counterweight 6 is provided on the outer side wall of the clamp core 2 opposite to the connector 3 to avoid the problem of one side of the clamp core 2 being unbalanced due to the setting of the connector 3 and the locking part 4.

[0031] To further facilitate quick-change clamping, the inner wall of the clamping core 2 is provided with a positioning step 7, and the outer wall of the workpiece 1 has a mating part. When the workpiece 1 is clamped into the clamping core 2, the mating part of the workpiece 1 abuts against the positioning step 7. During clamping, the locking member 4 is pulled out, and the workpiece 1 is inserted into the clamping core 2. The positioning step 7 abuts against the mating part of the workpiece 1. At this time, the hole on the side of the workpiece 1 is basically at the same depth position as the locking member 4 in the clamping core 2. Even if there is a slight deviation, the hole on the side of the workpiece 1 can be aligned with the locking member 4 by slightly rotating the workpiece 1. Under the action of the first elastic member 5, the locking member 4 is inserted into the hole on the side of the workpiece 1, realizing quick-change clamping of the workpiece 1 with high precision.

[0032] See Figures 1-2The support mechanism includes a base 8, a first support member 9 and a second support member 10 disposed on opposite sides of the base 8, and a connecting ring 11 that is rotatably and slidably connected to the first support member 9 and the second support member 10 via a first shaft 12 and a second shaft 13, respectively. The clamping core 2 is movably disposed within the connecting ring 11, and a first guide post 14 and a second guide post 15 are respectively provided on the upper and lower sides of the clamping core 2. The upper part of the first guide post 14 passes through the upper part of the connecting ring 11 and is rotatably and slidably disposed with the connecting ring 11, and the lower part of the second guide post 15 passes through the lower part of the connecting ring 11 and is rotatably and slidably disposed with the connecting ring 11.

[0033] The support mechanism also includes a resilient support assembly located below the connecting ring 11 and used to support the second guide post 15.

[0034] The first axis 12 and the second axis 13 extend horizontally, and the first guide post 14 and the second guide post 15 extend vertically. The center lines of the first axis 12 and the second axis 13 are collinear, and the extension lines of the first guide post 14 and the second guide post 15 are collinear. Furthermore, the center lines of the first axis 12 and the second axis 13 are perpendicular to the extension lines of the first guide post 14 and the second guide post 15.

[0035] In this example, the first shaft 12 is fixedly mounted on the first support member 9, and the second shaft 12 is fixedly mounted on the second support member 10. A copper sleeve is inserted through and fixedly mounted on the connecting ring 11 at the position corresponding to the first shaft 12, and a copper sleeve is inserted through and fixedly mounted on the connecting ring 11 at the position corresponding to the second shaft 13. The first shaft 12 and the second shaft 13 are respectively movably inserted into the copper sleeves on both sides of the connecting ring 11. There is a gap between the first shaft 12 and the inner wall of the corresponding copper sleeve, and between the second shaft 13 and the inner wall of the corresponding copper sleeve. The connecting ring 11 is located between the first support member 9 and the second support member 10.

[0036] The first guide post 14 is fixedly mounted on the clamping core 2, and the second guide post 15 is fixedly mounted on the clamping core 2. A copper sleeve is inserted through the upper part of the connecting ring 11 corresponding to the position of the first guide post 14, and a copper sleeve is inserted through the lower part of the connecting ring 11 corresponding to the position of the second guide post 15. The first guide post 14 and the second guide post 15 are respectively movably inserted into the copper sleeves at the upper and lower parts of the connecting ring 11. There is a gap between the first guide post 14 and the inner wall of the corresponding copper sleeve, and between the second guide post 15 and the inner wall of the corresponding copper sleeve. The clamping core 2 is located inside the connecting ring 11.

[0037] During honing, the workpiece 1 is fixed inside the clamping core 2, and the base 8 is fixed on the processing platform of the honing machine. Thus, the clamping mechanism can not only rotate around the first axis 12 and the second axis 13, but also around the first guide post 14 and the second guide post 15. It can also slide along the axis of the first axis 12 and the second axis 13 and along the extension line of the first guide post 14 and the second guide post 15. The clamping mechanism achieves floating, so the workpiece 1 can also float, thereby enabling adaptive correction during honing.

[0038] In this example, the elastic support assembly includes a support plate 20 fixedly connected to the base 8, a threaded sleeve fixedly disposed to the support plate 20 and extending vertically, an adjusting screw 16 threadedly connected to the lower end of the threaded sleeve, a second elastic element 18 and a stop element 19 sequentially disposed inside the threaded sleeve and located above the adjusting screw 16. The second elastic element 18 is located between the adjusting screw 16 and the stop element 19. The stop element 19 is movably disposed along the length direction of the threaded sleeve. The lower end of the second guide post 15 is inserted into the threaded sleeve and abuts against the stop element 19. The adjusting screw 16 is used to adjust the elastic force of the second elastic element 18 to overcome the influence of different workpiece weights.

[0039] By rotating the adjusting screw 16, the adjusting screw 16 pushes or releases the second elastic element 18 to make the elastic force of the second elastic element 18 increase or decrease. The different elastic forces of the second elastic element 18 offset the self-weight of different workpieces, eliminating the influence of different workpiece self-weights on machining accuracy. During honing, the elastic support component can also stabilize the workpiece and the clamping core, enabling the workpiece and clamping mechanism to float freely and improving the honing accuracy of the workpiece.

[0040] In this example, the screw sleeve includes a sleeve portion 17 fixedly disposed with the support plate 20 and a nut 21 fixedly connected to the lower end of the sleeve portion 17. The adjusting screw 16 is threadedly connected to the nut 21 and the upper end of the adjusting screw 16 is inserted into the sleeve portion 17.

[0041] The second elastic element 18 is a compression spring disposed in the sleeve portion 17, and the abutment element 19 is a steel ball located between the compression spring and the second guide post 15.

[0042] When this quick-change horizontal honing fixture is used for honing, the base 8 is fixedly installed on the processing platform of the honing machine. When it is necessary to change the workpiece, simply pull out the locking member 4 to disengage the locking member 4 from the hole on the side of the workpiece 1, change the workpiece 1, release the locking member 4, and the locking member 4 will reset under the action of the first elastic member 5 and be inserted into the hole on the side of the workpiece 1 so that the workpiece 1 is relatively fixed with the fixture core 2. The workpiece 1 can be changed quickly, the workpiece 1 replacement time is short, and the work efficiency is high.

[0043] Furthermore, the locking element 4 can achieve a high-precision fit with the hole on the side of the workpiece 1, and the gap between the locking element 4 and the hole on the side of the workpiece 1 can be small enough, resulting in high fitting accuracy, which helps to improve the honing machining accuracy.

[0044] When the weight of the workpiece 1 is different, the elastic force of the second elastic element 18 can be adjusted by adjusting the screw 16 to counteract the effect of different workpiece weights, eliminate the influence of workpiece weight on machining accuracy during honing, realize that the workpiece and clamping mechanism can float freely, further improve the honing accuracy of the workpiece, and greatly reduce the occurrence of defective products.

[0045] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent changes or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

[0046] The endpoints and any values ​​of the ranges disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoint values ​​of the various ranges, the endpoint values ​​of the various ranges and individual point values, and individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed herein.

Claims

1. A quick-change horizontal honing fixture for honing workpieces, wherein the workpiece has a hole on its side, and the horizontal honing fixture includes a support mechanism and a clamping mechanism disposed on the support mechanism, characterized in that: The clamping mechanism includes a clamping core disposed on the support mechanism. The clamping core has a receiving cavity for accommodating the workpiece. The clamping mechanism also includes a connector disposed on the side of the clamping core and having a hollow cavity, and a locking member slidably disposed within the connector. The clamping core has a through groove corresponding to the position of the hollow cavity of the connector. One end of the locking member can be retracted into the through groove or extend into the interior of the clamping core through the through groove, so that one end of the locking member can be separated from or engaged with the hole of the workpiece. The clamping mechanism also includes a first elastic member disposed between the locking member and the connector. The first elastic member is used to make the locking member tend to engage with the hole of the workpiece. The locking member includes a body portion located in the hollow inner cavity, an operating portion formed at one end of the body portion and exposed to the connector, and a locking portion formed at the other end of the body portion. The locking portion can be retracted into the through groove or extended into the interior of the clamping core through the through groove. The support mechanism includes a base, a first support member and a second support member disposed on opposite sides of the base, and a connecting ring rotatably and slidably connected to the first support member and the second support member via a first shaft and a second shaft, respectively. A clamping core is movably disposed within the connecting ring, and a first guide post and a second guide post are respectively provided on the upper and lower sides of the clamping core. The upper part of the first guide post passes through the upper part of the connecting ring and is rotatably and slidably connected to the connecting ring, while the lower part of the second guide post passes through the lower part of the connecting ring and is rotatably and slidably connected to the connecting ring. The support mechanism also includes an elastic support assembly disposed below the connecting ring for supporting the second guide post. The elastic support assembly includes a support plate connected to the base, a threaded sleeve fixedly disposed to the support plate and extending vertically, an adjusting screw threadedly connected to the lower end of the threaded sleeve, a second elastic element and a stop element sequentially disposed inside the threaded sleeve and located above the adjusting screw, the second elastic element being located between the adjusting screw and the stop element, the stop element being movably disposed along the length direction of the threaded sleeve, the lower end of the second guide post being movably inserted into the threaded sleeve and abutting against the stop element, and the adjusting screw being used to adjust the elastic force of the second elastic element; The blocking component is a steel ball, and the second elastic component is a compression spring.

2. The quick-change horizontal honing fixture according to claim 1, characterized in that: The clamp core has a counterweight on its outer side wall opposite to the connector.

3. The quick-change horizontal honing fixture according to claim 1, characterized in that: The first elastic element is a spring.

4. The quick-change horizontal honing fixture according to claim 1, characterized in that: The inner wall of the clamping core is provided with a positioning step, and the outer wall of the workpiece is provided with a mating part. When the workpiece is clamped into the clamping core, the mating part of the workpiece abuts against the positioning step.

5. The quick-change horizontal honing fixture according to claim 1, characterized in that: The threaded sleeve includes a sleeve portion fixedly disposed with the support plate and a nut fixedly connected to the lower end of the sleeve portion. The adjusting screw is threadedly connected to the nut and the upper end of the adjusting screw is inserted into the sleeve portion.

6. The quick-change horizontal honing fixture according to claim 1, characterized in that: The first shaft and the second shaft extend horizontally, and the first guide post and the second guide post extend vertically.

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