Auxiliary positioning device of numerical control gantry machining center
By designing an auxiliary positioning device for a CNC gantry machining center, the precise positioning and height adjustment of the workpiece are achieved using a lifting mechanism and scale lines, solving the problem of inconvenient workpiece positioning and improving machining accuracy and efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHONGQING XUGANG MASCH CO LTD
- Filing Date
- 2025-06-11
- Publication Date
- 2026-05-12
AI Technical Summary
When machining workpieces, the positioning of the workpiece is inconvenient and cannot be adjusted according to the specific usage conditions, resulting in machining deviations.
An auxiliary positioning device for a CNC gantry machining center was designed, including a support frame, a positioning plate, a scale plate, and a lifting mechanism. The lifting mechanism drives the positioning plate to move up and down, and the precise positioning and height adjustment of the workpiece are achieved in combination with the scale lines and guide rods.
It enables rapid and precise positioning and height adjustment of workpieces, reduces machining deviations, and improves machining accuracy and efficiency.
Smart Images

Figure CN224223328U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary positioning equipment, specifically an auxiliary positioning device for a CNC gantry machining center. Background Technology
[0002] A CNC gantry machining center is a high-precision, high-efficiency large CNC machine tool. It adopts a gantry structure (consisting of two columns and a crossbeam to form a gantry frame) and is suitable for machining large, heavy or complex parts. It is widely used in aerospace, mold manufacturing, energy equipment and other fields.
[0003] A CNC gantry machining center includes a gantry frame, a worktable, a spindle system, and a CNC system. When machining products, the positioning of the workpiece is inconvenient. It is impossible to adjust the position of the workpiece according to the specific usage situation, and it is impossible to quickly perform auxiliary positioning of the product, which can easily cause machining deviations. Utility Model Content
[0004] The purpose of this invention is to provide an auxiliary positioning device for CNC gantry machining centers to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] An auxiliary positioning device for a CNC gantry machining center includes a support frame and further includes:
[0007] The positioning plate has a movable plate on the support frame, a sleeve on the top of the movable plate, a support rod slidably mounted on the top of the sleeve, a positioning plate on the top of the support rod, fixed blocks on both sides of the positioning plate, a lifting frame between the two fixed blocks, multiple slots on the lifting frame, insert plates on the fixed blocks, one end of the insert plates penetrating into the slots, multiple movable rods on the lifting frame, and pressure blocks for fixing the workpiece at the bottom of the movable rods.
[0008] The scale plate has a guide rod inside the support frame, the movable plate passes through the guide rod and slides with it, the bottom of the movable plate has a pointer, the scale plate is outside the support frame, the pointer contacts the outside of the scale plate, the support rod has scale lines outside, and the sleeve has a through groove outside.
[0009] The lifting mechanism is connected to the positioning plate and can drive the positioning plate to move up and down.
[0010] Based on the above technical solutions, this utility model also provides the following optional technical solutions:
[0011] In one alternative: the lifting mechanism includes a threaded rod, a slider, and a connecting plate. A square groove is provided on the movable plate, and a slider is slidably disposed inside the square groove. A connecting plate is rotatably disposed on the slider, and the top of the connecting plate is rotatably connected to a positioning plate. A threaded rod is provided inside the square groove, and the slider is sleeved on the threaded rod through a threaded hole provided inside.
[0012] In one alternative: the positioning plate is provided with anti-slip grooves, and the insert plate is provided with a reset spring.
[0013] In one alternative: a lead screw is provided inside the support frame, and a nut that cooperates with the lead screw is provided on the movable plate.
[0014] In one alternative: the support frame has a protective box inside, and the protective box has a power component connected to the lead screw inside.
[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0016] The auxiliary positioning device of the CNC gantry machining center moves the positioning plate up and down through a lifting mechanism. The workpiece is located on the positioning plate and fixed by multiple pressure blocks. The up and down movement of the positioning plate facilitates the adjustment of the workpiece's machining height. The lifting distance is controlled by a scale line. The movable plate moves the workpiece along the guide rod, and the movement distance is controlled by a scale plate. The position of the workpiece can be adjusted according to the usage conditions, making it convenient to use and adjust. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the auxiliary positioning device for a CNC gantry machining center.
[0018] Figure 2 This is a schematic diagram of the movable plate in the auxiliary positioning device of a CNC gantry machining center.
[0019] Figure 3 This is a schematic diagram of the positioning plate in the auxiliary positioning device of a CNC gantry machining center.
[0020] Figure label annotations: 1-Support frame, 2-Modible plate, 201-Square groove, 3-Scale plate, 4-Guide rod, 5-Screw rod, 6-Nut, 7-Slider, 8-Positioning plate, 801-Anti-slip groove, 9-Fixing block, 10-Modible rod, 11-Lifting frame, 111-Slot, 12-Telescopic spring, 13-Pressure block, 14-Pointer, 15-Threaded rod, 16-Handle, 17-Insert plate, 18-Mounting plate, 19-Protective box, 20-Mounting block, 21-Connecting plate, 22-Support rod, 221-Scale line, 23-Sleeve, 25-Through groove, 26-Reset spring. Detailed Implementation
[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. In the drawings and description, similar or identical parts are referred to by the same reference numerals, and in practical applications, the shape, thickness, or height of each component may be enlarged or reduced. The embodiments listed in this utility model are merely illustrative and not intended to limit the scope of this utility model. Any obvious modifications or changes made to this utility model do not depart from its spirit and scope.
[0022] In one embodiment, such as Figure 1-3 As shown, an auxiliary positioning device for a CNC gantry machining center includes a support frame 1, and further includes:
[0023] The positioning plate 8 has a movable plate 2 slidably disposed inside the support frame 1. The support frame 1 has multiple mounting blocks 20 at its bottom, allowing it to be used in conjunction with a machining center. A sleeve 23 is fixedly disposed at the top center of the movable plate 2. A support rod 22 is slidably disposed at the top of the sleeve 23. A positioning plate 8 is horizontally disposed at the top of the support rod 22. Fixing blocks 9 are disposed on both sides of the positioning plate 8. A lifting frame 11 is slidably disposed between the two fixing blocks 9. The lifting frame 11 has multiple slots 111. An insert plate 17 is disposed on the fixing block 9. One end of the insert plate 17 passes into the slot 111. The lifting frame 11 has multiple movable rods 10. A telescopic spring 12 is sleeved on the movable rod 10. A pressure block 13 for fixing the workpiece is disposed at the bottom of the movable rod 10. When the lifting frame 11 is pressed down, the workpiece is fixed by the pressure block 13 at the bottom of the lifting frame 11.
[0024] The scale plate 3, the support frame 1 has a guide rod 4 fixedly installed inside, the movable plate 2 passes through the guide rod 4 and slides with it, the bottom of the movable plate 2 is provided with a pointer 14, the scale plate 3 is provided outside the support frame 1, the pointer 14 is in contact with the outside of the scale plate 3, the movable plate 2 drives the workpiece on the positioning plate 8 to move, the movable plate 2 drives the pointer 14 to move, which facilitates the control of the position of the movable plate 2, the support rod 22 is provided with scale lines 221 outside, the sleeve 23 is provided with a through groove 25, the vertical height of the positioning plate 8 is read through the scale lines 221 in the through groove 25;
[0025] The lifting mechanism is connected to the positioning plate 8 and can drive the positioning plate 8 to move up and down.
[0026] The auxiliary positioning device of the CNC gantry machining center drives the positioning plate 8 to move up and down through the lifting mechanism. The workpiece is located on the positioning plate 8 and is fixed by multiple pressure blocks 13. The positioning plate 8 moves up and down to facilitate the adjustment of the machining height of the workpiece. The lifting distance is controlled by the scale line 221. The movable plate 2 drives the workpiece to slide along the guide rod 4. The distance of movement can be controlled by the scale plate 3. As an embodiment, the left, right and up and down positions of the various components shown in the figure are only one arrangement. The specific positions are set according to specific needs.
[0027] In one embodiment, such as Figure 1-2 As shown, the lifting mechanism includes a threaded rod 15, a slider 7, and a connecting plate 21. A square groove 201 is provided on the movable plate 2, and the slider 7 is slidably disposed inside the square groove 201. The connecting plate 21 is rotatably disposed on the slider 7, and the top end of the connecting plate 21 is rotatably connected to the positioning plate 8. The threaded rod 15 is disposed inside the square groove 201, and a handle 16 is provided at one end of the threaded rod 15. The two ends of the threaded rod 15 are provided with external threads with opposite directions of rotation. The slider 7 is sleeved on the threaded rod 15 through a threaded hole. The handle 16 drives the threaded rod 15 to rotate, and the threaded rod 15 drives the slider 7 to move closer or further apart. The slider 7 drives the positioning plate 8 to move up and down through the connecting rod 21.
[0028] In one embodiment, such as Figure 1-3 As shown, the positioning plate 8 has an anti-slip groove 801, and the insert plate 17 is provided with a return spring 26. The insert plate 17 locks the lifting frame 11, so that the lifting frame 11 can only move downward.
[0029] In one embodiment, such as Figure 1 As shown, a lead screw 5 is provided inside the support frame 1, and a nut 6 that cooperates with the lead screw 5 is provided on the movable plate 2.
[0030] In one embodiment, such as Figure 1 As shown, the support frame 1 is provided with a protective box 19 inside, which is mounted on the mounting plate 18. The protective box 19 is provided with a power component connected to the lead screw 5 inside, which is a drive motor. The drive motor drives the lead screw 5 to rotate, and the lead screw 5 drives the movable plate 2 to slide along the inner wall of the support frame 1 through the cooperation of the nut 6.
[0031] The above embodiments of this utility model provide an auxiliary positioning device for a CNC gantry machining center. The support frame 1 is fixed by the mounting block 20, so that the device matches the machining center. The workpiece is placed on the positioning plate 8, and the lifting frame 11 is pressed down. The insert plate 17 locks the lifting frame 11, so that the lifting frame 11 cannot be reset upward. Multiple pressure blocks 13 squeeze and fix the workpiece. The handle 16 drives the threaded rod 15 to rotate. The threaded rod 15 drives the slider 7 to move closer or further away from each other. The slider 7 drives the positioning plate 8 to move up and down through the connecting rod 21 to adjust the processing height of the workpiece. The lifting distance is controlled by the scale line 221.
[0032] The above description is merely a specific embodiment of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.
Claims
1. An auxiliary positioning device for a CNC gantry machining center, comprising a support frame, characterized in that, Also includes: The positioning plate has a movable plate on the support frame, a sleeve on the top of the movable plate, a support rod slidably mounted on the top of the sleeve, a positioning plate on the top of the support rod, fixed blocks on both sides of the positioning plate, a lifting frame between the two fixed blocks, multiple slots on the lifting frame, insert plates on the fixed blocks, one end of the insert plates penetrating into the slots, multiple movable rods on the lifting frame, and pressure blocks for fixing the workpiece at the bottom of the movable rods. The scale plate has a guide rod inside the support frame, the movable plate passes through the guide rod and slides with it, the bottom of the movable plate has a pointer, the scale plate is outside the support frame, the pointer contacts the outside of the scale plate, the support rod has scale lines outside, and the sleeve has a through groove outside. The lifting mechanism is connected to the positioning plate and can drive the positioning plate to move up and down.
2. The auxiliary positioning device for a CNC gantry machining center according to claim 1, characterized in that, The lifting mechanism includes a threaded rod, a slider, and a connecting plate. A square groove is provided on the movable plate, and a slider is slidably disposed inside the square groove. A connecting plate is rotatably disposed on the slider, and the top of the connecting plate is rotatably connected to a positioning plate. A threaded rod is provided inside the square groove, and the slider is sleeved on the threaded rod through a threaded hole provided inside.
3. The auxiliary positioning device for a CNC gantry machining center according to claim 2, characterized in that, The positioning plate is provided with anti-slip grooves, and the insert plate is provided with a return spring.
4. The auxiliary positioning device for a CNC gantry machining center according to claim 1, characterized in that, The support frame is equipped with a lead screw, and the movable plate is equipped with a nut that cooperates with the lead screw.
5. The auxiliary positioning device for a CNC gantry machining center according to claim 1, characterized in that, The support frame has a protective box inside, and the protective box contains a power component connected to the lead screw.