Indexing chuck for cross shaft machining
By introducing a synchronous hydraulic cylinder and feedback system into the indexing chuck for cross-axis machining, the accuracy of the operation is ensured, the problem of incomplete indexing chuck operation is solved, and a safe and reliable machining process is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN SANJIA AUTO PARTS CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-28
AI Technical Summary
During the machining of cross shafts, improper movement of the indexing chuck can lead to jamming, tool collision, and other risks, resulting in workpiece scrap and machine tool damage.
Synchronous hydraulic cylinders are used to simulate the working state of the 90-degree hydraulic cylinder inside the disc, and signals are sent to the lathe control system through feedback devices to ensure accurate operation and avoid improper actions.
It effectively avoids tool and machine tool damage caused by improper operation, improves the reliability and safety of processing, reduces costs and simplifies the maintenance process.
Smart Images
Figure CN224168787U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cross shaft machining technology, specifically to an indexing chuck for cross shaft machining. Background Technology
[0002] With the rapid development of the automotive industry and the continuous improvement of vehicle performance, the requirements for automotive parts manufacturing technology are becoming increasingly higher. This places higher demands on the structure and manufacturing technology of key components such as cross shafts. High efficiency, energy saving, and ease of processing are the current development trends of automotive key parts manufacturing technology.
[0003] During the machining of the cross-axis, a dividing chuck is required for fixation. The dividing chuck drives the cross-axis to rotate, facilitating machining of the shaft in four different directions. After machining one side of the spindle, the dividing chuck rotates 45° and then 90° to complete the reversal. During this process, the mechanism often jams due to various reasons, resulting in the risk of tool collision, scrapped workpieces, and in severe cases, even damage to the machine tool. Utility Model Content
[0004] To address the aforementioned problems, this utility model proposes an indexing chuck for machining cross shafts, the specific technical solution of which is as follows:
[0005] A cross-axis machining indexing chuck includes a disc body and a hydraulic pump station. A clamping cylinder and an indexing plate are respectively installed on the upper and lower sides of the disc body. The disc body also houses a positioning cylinder, a 45-degree cylinder, and a 90-degree cylinder. A flow divider valve is installed at the outlet of the hydraulic pump station. The outlet of the flow divider valve is connected to a clamping oil circuit, a positioning oil circuit, and an indexing oil circuit. The indexing oil circuit includes a three-position four-way solenoid directional valve A connected to the flow divider valve. The left and right positions of the three-position four-way solenoid directional valve A are respectively connected to the 45-degree oil circuit and the 90-degree oil circuit. A synchronizing cylinder is connected in series on the 90-degree oil circuit. A feedback element is installed on the front side of the movable end of the synchronizing cylinder. The feedback element is communicatively connected to the lathe control system. When the 90-degree cylinder completes its turning stroke, the movable end of the synchronizing cylinder can touch the feedback element, and the feedback element sends a signal to the lathe control system.
[0006] Furthermore, the feedback device is a photoelectric switch or a magnetic switch.
[0007] Furthermore, both the pressing oil circuit and the positioning oil circuit are equipped with electromagnetic directional valves.
[0008] The beneficial effects of this utility model are as follows:
[0009] By setting a synchronous hydraulic cylinder to simulate the working state of the 90-degree hydraulic cylinder inside the disc, after the synchronous hydraulic cylinder triggers the feedback component, the feedback component sends a signal to the control system. Only after the control system receives the signal can it proceed to the next step of processing, thus avoiding the phenomenon of tool damage, scrapped products and machine tool damage caused by incomplete action during processing. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 This is a schematic diagram of the indexing chuck for cross shaft machining according to the present invention.
[0012] In the diagram: 1. Disc body; 2. Clamping cylinder; 3. Indexing plate; 4. Clamping oil circuit; 5. Positioning oil circuit; 6. 45-degree oil circuit; 7. 90-degree oil circuit; 8. Feedback component; 9. Synchronizing cylinder; 10. Diverter valve; 11. Three-position four-way solenoid directional valve A; 12. Oil delivery device. Detailed Implementation
[0013] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.
[0014] The present invention provides the following specific implementation scheme:
[0015] like Figure 1As shown, this utility model provides an indexing chuck for cross-axis machining, including a chuck body 1 and a hydraulic pump station. A clamping cylinder 2 and an indexing plate 3 are respectively provided on the upper and lower sides of the chuck body 1. The chuck body 1 also contains a positioning cylinder, a 45-degree cylinder, and a 90-degree cylinder. A flow divider valve 10 is provided at the outlet of the hydraulic pump station. The outlet end of the flow divider valve 10 is connected to a clamping oil circuit 4, a positioning oil circuit 5, and an indexing oil circuit. The flow divider valve 10 is connected to the clamping cylinder 2 through the clamping oil circuit 4, and to the positioning cylinder through the positioning oil circuit 5. A positioning pin is connected to the movable end of the positioning cylinder, and the positioning pin can be inserted into the indexing plate 3. The indexing plate 3 is locked in position. The indexing oil circuit includes a three-position four-way solenoid directional valve A11 connected to the flow divider valve 10. The left and right positions of the three-position four-way solenoid directional valve A11 are connected to the 45-degree oil circuit 6 and the 90-degree oil circuit 7, respectively. A synchronous oil cylinder 9 is connected in series on the 90-degree oil circuit 7. A feedback element 8 is provided on the front side of the movable end of the synchronous oil cylinder 9. The feedback element 8 is communicatively connected to the lathe control system. When the 90-degree oil cylinder completes the turning stroke, the movable end of the synchronous oil cylinder 9 can touch the feedback element 8. At this time, the feedback element 8 sends a signal to the lathe control system. Only after the control system receives the signal can it proceed to the next action.
[0016] Furthermore, the feedback element 8 is an inductive switch such as a photoelectric switch or a magnetic switch, and when the feedback element 8 is pressed, it sends an electrical signal to the control system.
[0017] Furthermore, the clamping oil circuit 4 is equipped with a three-position four-way solenoid directional valve B. When the three-position four-way solenoid directional valve B is in the left position, hydraulic oil enters the rodless chamber of the clamping cylinder 2, and the hydraulic oil in the rod chamber flows back to the oil tank. The piston rod of the clamping cylinder 2 extends, clamping the workpiece on the indexing plate 3. When the three-position four-way solenoid directional valve B is in the right position, hydraulic oil enters the rod chamber of the clamping cylinder 2, and the hydraulic oil in the rodless chamber flows back to the oil tank. The piston rod of the clamping cylinder 2 retracts, releasing the workpiece on the indexing plate 3. Each positioning oil circuit 5 is equipped with a three-position four-way solenoid directional valve C. When the three-position four-way solenoid directional valve C is in the left position, hydraulic oil enters the rodless chamber of the positioning cylinder, and the hydraulic oil in the rod chamber flows back to the oil tank. The piston rod of the positioning cylinder extends, and the positioning pin is inserted into the indexing plate 3. When the three-position four-way solenoid directional valve C is in the right position, hydraulic oil enters the rod chamber of the positioning cylinder, and the hydraulic oil in the rodless chamber flows back to the oil tank. The piston rod of the positioning cylinder retracts, and the positioning pin no longer restricts the rotation of the indexing plate 3.
[0018] Furthermore, an oil feeder 12 is provided on the rear side of the indexing chuck. The positioning oil circuit 5, the clamping oil circuit 4, the 45-degree oil circuit 6, and the 90-degree oil circuit 7 respectively deliver oil to the positioning oil cylinder, the clamping oil cylinder 2, the 45-degree oil cylinder, and the 90-degree oil cylinder through the oil feeder.
[0019] After machining the cross shaft in one direction, the control system issues a command to retract the positioning pin, switch the three-position four-way solenoid valve B to the neutral position, and after the 45-degree cylinder completes its stroke, the 90-degree cylinder begins its stroke while the synchronous cylinder 9 moves synchronously. When the 90-degree cylinder completes its stroke, the synchronous cylinder 9 contacts the feedback element 8, which sends a signal to the control system. The control system then issues a command to insert the positioning pin into the indexing plate 3, and switch the three-position four-way solenoid valve B to the left position for cutting.
[0020] By setting up a synchronous hydraulic cylinder 9 to simulate the working state of the 90-degree hydraulic cylinder inside the disc body 1, after the synchronous hydraulic cylinder 9 triggers the feedback element 8, the feedback element 8 sends a signal to the control system. Only after the control system receives the signal can it proceed to the next processing step. This avoids tool damage, scrapped products, and machine tool damage caused by incomplete mechanism movement during processing. Compared with other systems such as pressure detection systems, this solution is low in cost, simple to debug, stable in performance, and convenient to maintain.
[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A cross-axis machining indexing chuck, comprising a disc body (1) and a hydraulic pump station, wherein a clamping cylinder (2) and an indexing disc (3) are respectively provided on the upper and lower sides of the disc body (1), and a positioning cylinder, a 45-degree cylinder and a 90-degree cylinder are also installed inside the disc body (1). A flow divider valve (10) is provided at the outlet of the hydraulic pump station, and the outlet end of the flow divider valve (10) is respectively connected to a clamping oil circuit (4), a positioning oil circuit (5) and an indexing oil circuit. The indexing oil circuit includes a three-position four-way solenoid directional valve A (11) connected to the flow divider valve (10). The left and right positions of the three-position four-way solenoid directional valve A (11) are respectively connected to the 45-degree oil circuit (6) and the 90-degree oil circuit (7). The chuck is characterized in that: A synchronous cylinder (9) is connected in series on the 90-degree oil circuit (7). A feedback element (8) is provided on the front side of the movable end of the synchronous cylinder (9). The feedback element (8) is connected to the lathe control system. When the 90-degree cylinder completes the turning stroke, the movable end of the synchronous cylinder (9) can touch the feedback element (8), and the feedback element (8) sends a signal to the lathe control system.
2. The indexing chuck for machining a cross shaft according to claim 1, characterized in that: The feedback element (8) is a photoelectric switch or a magnetic switch.
3. The indexing chuck for machining a cross shaft according to claim 1, characterized in that: Both the pressing oil circuit (4) and the positioning oil circuit (5) are equipped with electromagnetic directional valves.