CN216096601U - Indexing fixture for milling cooling groove on inner wall of large-diameter water cooling jacket - Google Patents
Indexing fixture for milling cooling groove on inner wall of large-diameter water cooling jacket Download PDFInfo
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- CN216096601U CN216096601U CN202122017349.4U CN202122017349U CN216096601U CN 216096601 U CN216096601 U CN 216096601U CN 202122017349 U CN202122017349 U CN 202122017349U CN 216096601 U CN216096601 U CN 216096601U
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Abstract
The utility model provides an indexing fixture for milling a cooling groove in the inner wall of a large-diameter water cooling jacket, which comprises a driving roller frame body and a driven roller frame body, wherein the two roller frame bodies are symmetrically arranged according to the diameter of a large-diameter water cooling jacket workpiece so as to support and clamp the workpiece; the roller frame body comprises a frame body, a compression bolt, a connecting bolt, a tension rod, a bearing upper cover, a bearing end cover, a bearing, a roller, a pointer, a cushion block, a fixing bolt and a positioning bolt. According to the utility model, a common three-axis vertical milling machine is matched with an indexing fixture to process the cooling groove on the inner wall of the large-diameter water cooling jacket, the indexing fixture can stably clamp rotary workpieces with different specifications, the workpieces can be driven to rotate in the processing process, the rotational degree of freedom of a Y axis is increased, and the pointer on the fixture is aligned with the scale mark of the workpieces, so that the processing precision can be ensured, and the manufacturing cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of machining and manufacturing, and particularly relates to an indexing fixture for milling a cooling groove in the inner wall of a large-diameter water cooling jacket.
Background
The water cooling jacket is a core component of a strip production line in the metallurgical industry, and a blank is an imported material and is expensive. A copper water cooling jacket structure for among the heavy cooling equipment of metallurgical industry is shown in figure 1, and its external diameter is 2000mm, and the internal diameter is 1880mm, and inner wall evenly distributed 240 cooling channels, the cooling channel is the interior groove that leads to of axial non-, and the cooling channel both ends face is 44mm apart from copper jacket both ends face, and adjacent two groove graduation tolerance is 0.3. The water cooling jacket has large outer diameter, a plurality of inner grooves and high indexing precision requirement, and a five-axis gantry machining center is usually adopted in the inner groove machining process; however, the five-axis machining center is expensive, and general manufacturing enterprises do not have the equipment or have few equipment, so that the five-axis machining center belongs to narrow production openings. If a common three-axis vertical milling machine can be used for replacing a five-axis gantry machining center to mill a cooling groove on the inner wall of the large-diameter water cooling jacket, the cost is greatly reduced.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model provides an indexing fixture for milling a cooling groove on the inner wall of a large-diameter water-cooling jacket, which aims to solve the technical problem that the cooling groove on the inner wall of the large-diameter water-cooling jacket cannot be stably clamped and accurately indexed when being processed by a common three-axis vertical milling machine.
(II) technical scheme
In order to solve the technical problem, the utility model provides an indexing fixture for milling a cooling groove on the inner wall of a large-diameter water cooling jacket, which comprises a driving roller frame body and a driven roller frame body, wherein the two roller frame bodies are symmetrically arranged according to the diameter of a large-diameter water cooling jacket workpiece so as to support and clamp the workpiece; the roller frame body comprises a frame body, a compression bolt, a connecting bolt, a tension rod, a bearing upper cover, a bearing end cover, a bearing, a roller, a pointer, a cushion block, a fixing bolt and a positioning bolt; the roller frame body is used for fixing the roller frame body on a machine tool workbench and comprises a bottom plate, two side plates and two bearing seats; the side plates and the bearing seats are fixed on the bottom plate, and the two side plates and the two bearing seats are arranged oppositely; the compression bolt is arranged on a side plate of the frame body and used for locking a workpiece; the cushion block is connected to the head of the compression bolt; the positioning bolt is fixedly connected to the other side plate of the frame body and is symmetrical to the compression bolt in position; two ends of the tension rod are fixedly connected between the two side plates of the frame body and used for preventing the workpiece from falling off; two ends of the roller are arranged on two bearing seats of the frame body through a bearing and a bearing upper cover and are used for supporting and rotating the workpiece; the two bearing end covers are arranged on the bearing upper cover and the bearing seat; the pointer is arranged on the side plate of the frame body and used for aligning the workpiece scribed line.
Further, the cushion block is connected to the head of the compression bolt through an internal thread.
Furthermore, two ends of the tension rod are fixedly connected between the two side plates of the frame body through fixing bolts.
Furthermore, the roller and the wheel axle are designed integrally, and the end face of the extending part of the wheel axle is square.
Further, the bearing end cover is installed on the bearing upper cover and the bearing seat through connecting bolts.
(III) advantageous effects
The utility model provides an indexing fixture for milling a cooling groove in the inner wall of a large-diameter water cooling jacket, which comprises a driving roller frame body and a driven roller frame body, wherein the two roller frame bodies are symmetrically arranged according to the diameter of a large-diameter water cooling jacket workpiece so as to support and clamp the workpiece; the roller frame body comprises a frame body, a compression bolt, a connecting bolt, a tension rod, a bearing upper cover, a bearing end cover, a bearing, a roller, a pointer, a cushion block, a fixing bolt and a positioning bolt. According to the utility model, a common three-axis vertical milling machine is matched with an indexing fixture to process the cooling groove on the inner wall of the large-diameter water cooling jacket, the indexing fixture can stably clamp rotary workpieces with different specifications, the workpieces can be driven to rotate in the processing process, the rotational degree of freedom of a Y axis is increased, and the pointer on the fixture is aligned with the scale mark of the workpieces, so that the processing precision can be ensured, and the manufacturing cost is reduced.
Drawings
FIG. 1 is a schematic view of a conventional copper water-cooling jacket;
FIG. 2 is a schematic view of an index fixture according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an indexing fixture according to an embodiment of the present invention: (a) a perspective view, (b) a front view, (c) a front sectional view, (d) a plan view, and (e) a side view.
Detailed Description
In order to make the objects, contents and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.
The embodiment provides an indexing fixture for milling a cooling groove on the inner wall of a large-diameter water-cooling jacket, and the purpose of processing the cooling groove on the inner wall of the large-diameter water-cooling jacket by using a common three-axis vertical milling machine is achieved.
The indexing fixture comprises a driving roller frame body and a driven roller frame body, wherein the two roller frame bodies are symmetrically installed according to the diameter of a large-diameter water cooling jacket workpiece so as to support and clamp the workpiece, as shown in figure 2. The roller wheel shaft of the driving roller wheel frame body is rotated by a spanner, so that the workpiece can be driven to stably rotate by taking the circle center of the excircle as a reference.
The structure of the roller frame body is shown in fig. 3, and comprises a frame body 1, a compression bolt 2, a connecting bolt 3, a tension rod 4, a bearing upper cover 5, a bearing end cover 6, a bearing 7, a roller 8, a pointer 9, a cushion block 10, a fixing bolt 11 and a positioning bolt 12.
The frame body 1 is used for fixing the roller frame body on a machine tool workbench and comprises a bottom plate, two side plates and two bearing seats. Wherein, curb plate and bearing frame are all fixed on the bottom plate, and all set up relatively between two curb plates, two bearing frames. The compression bolt 2 is arranged on a side plate of the frame body 1 and used for locking a workpiece. The spacer 10 is attached to the head of the pressing bolt 2 by an internal thread for increasing a contact area with a workpiece. The positioning bolt 12 is fixedly connected to the other side plate of the frame body 1, and the position of the positioning bolt is symmetrical to that of the compression bolt 2, so that the positioning bolt is used for Y-axis positioning. Two ends of the tension rod 4 are installed between the two side plates of the frame body 1 through the fixing bolts 11, and the work piece is prevented from falling off accidentally.
Two ends of the roller 8 are arranged on two bearing seats of the frame body 1 through the bearing 7 and the bearing upper cover 5 and are used for supporting and rotating a workpiece. The roller 8 and the wheel axle are designed integrally, and the end face of the extending part of the wheel axle is square, so that the rotation angle can be adjusted conveniently by a wrench. Two bearing end covers 6 are arranged on the bearing upper cover 5 and the bearing seat through connecting bolts 3. The pointer 9 is installed on the side plate of the frame body 1 and is used for aligning the workpiece scribing.
The indexing fixture can ensure that the positioning reference of a workpiece is uniform, the clamping is stable and reliable, the rotary indexing is accurate, and the milling method of the cooling groove on the inner wall of the large-diameter water cooling jacket comprises the following steps:
(1) before milling an inner groove by a water-cooling sleeve, uniformly carving 240 bisectors on the end face of a workpiece by using a three-axis numerical control gantry mill with the center of the workpiece as a reference for equally dividing and positioning;
(2) firstly, installing an indexing fixture on the table top of an XKA714 numerical control milling machine, measuring the center distance of rollers 8 of two roller frame bodies, pressing a bus of a dial indicator correction roller 8 after being parallel to an XKA714 three-axis numerical control milling Y axis, hoisting and placing a workpiece on the indexing fixture, installing a tension rod 4, and adjusting compression bolts 2 of the two roller frame bodies until the end face of the workpiece is attached to the end face of a positioning bolt 12; the positioning bolt 12 is used for Y-axis positioning;
(3) rotating a wheel shaft of the roller 8 of the driving roller frame body by using a spanner, adjusting the rotating angle of the roller 8, controlling the rotating angle of the workpiece, screwing the compression bolt 2 to lock the workpiece when the pointer 9 aligns at the scribed line position of the workpiece, and starting to mill the groove; after a groove is machined, the hold-down bolt 2 is loosened, the wheel shaft of the roller 8 of the driving roller frame body is rotated again, the pointer 9 is aligned with the next scribed line of the product, the workpiece is locked, and the groove milling is started; until all the inner grooves are processed, the tension rods 4 are disassembled, and the workpieces are taken down.
The utility model is applied to project practice, and the indexing error of all products is controlled within +/-0.3 degrees by inspection of the large-diameter water cooling jacket processed by the method, and the product percent of pass reaches 100%. The method and the same set of indexing fixture are adopted to complete the process
Compared with the external five-axis gantry milling, 30 or more parts of similar products with different specifications are machined, the manufacturing and transportation cost is saved, and the milling machining of the inner groove of the ultra-large workpiece in the common vertical milling machine is realized.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (5)
1. The indexing fixture for milling the cooling groove in the inner wall of the large-diameter water cooling jacket is characterized by comprising a driving roller frame body and a driven roller frame body, wherein the two roller frame bodies are symmetrically arranged according to the diameter of a large-diameter water cooling jacket workpiece so as to support and clamp the workpiece; the roller frame body comprises a frame body, a compression bolt, a connecting bolt, a tension rod, a bearing upper cover, a bearing end cover, a bearing, a roller, a pointer, a cushion block, a fixing bolt and a positioning bolt; wherein the content of the first and second substances,
the roller frame body is used for fixing the roller frame body on a machine tool workbench and comprises a bottom plate, two side plates and two bearing seats; the side plates and the bearing seats are fixed on the bottom plate, and the two side plates and the two bearing seats are arranged oppositely; the compression bolt is arranged on a side plate of the frame body and used for locking a workpiece; the cushion block is connected to the head of the compression bolt; the positioning bolt is fixedly connected to the other side plate of the frame body and is symmetrical to the compression bolt in position; two ends of the tension rod are fixedly connected between the two side plates of the frame body and used for preventing the workpiece from falling off;
two ends of the roller are arranged on two bearing seats of the frame body through a bearing and a bearing upper cover and are used for supporting and rotating a workpiece; the two bearing end covers are arranged on the bearing upper cover and the bearing seat;
the pointer is arranged on a side plate of the frame body and used for aligning the workpiece scribed line.
2. The indexing fixture of claim 1, in which the spacer is internally threaded to the head of the hold-down bolt.
3. The indexing fixture of claim 1, wherein the tension bar is fixedly attached at both ends thereof to the frame body between the side plates by means of fixing bolts.
4. An indexing fixture as claimed in claim 1, in which the roller is of integral design with its axle, the end face of the axle overhang being square.
5. The indexing fixture of claim 1, wherein the bearing end cap is mounted to the bearing top cap and the bearing housing by attachment bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122017349.4U CN216096601U (en) | 2021-08-25 | 2021-08-25 | Indexing fixture for milling cooling groove on inner wall of large-diameter water cooling jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122017349.4U CN216096601U (en) | 2021-08-25 | 2021-08-25 | Indexing fixture for milling cooling groove on inner wall of large-diameter water cooling jacket |
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| Publication Number | Publication Date |
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| CN216096601U true CN216096601U (en) | 2022-03-22 |
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| CN202122017349.4U Active CN216096601U (en) | 2021-08-25 | 2021-08-25 | Indexing fixture for milling cooling groove on inner wall of large-diameter water cooling jacket |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113600887A (en) * | 2021-08-25 | 2021-11-05 | 北京北方车辆集团有限公司 | Milling method and indexing fixture for cooling groove on inner wall of large-diameter water cooling jacket |
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2021
- 2021-08-25 CN CN202122017349.4U patent/CN216096601U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113600887A (en) * | 2021-08-25 | 2021-11-05 | 北京北方车辆集团有限公司 | Milling method and indexing fixture for cooling groove on inner wall of large-diameter water cooling jacket |
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