CN-116000703-B - Numerical control machine tool and ram transmission mechanism thereof

CN116000703BCN 116000703 BCN116000703 BCN 116000703BCN-116000703-B

Abstract

The invention relates to a numerical control machine tool and a ram transmission mechanism thereof. The sliding head is sleeved on the periphery of the sliding head, the outer wall surface of the sliding head comprises a matching surface which is tightly attached to the inner wall surface of the sliding head and a non-matching surface which is not contacted with the inner wall surface of the sliding head, the grating ruler comprises a fixed length and a reading head, the fixed length extends along the first direction to be long-strip-shaped, the fixed length is arranged on the non-matching surface, and the reading head is arranged on the sliding head. Through carrying out the structure setting to the ram, make the outer wall surface of ram have mating surface and non-mating surface, the mating surface is hugged closely with the inner wall surface of slide and is inject the slip direction of ram relative slide, and non-mating surface is not contacted with the inner wall surface of slide and can be used for installing the scale of grating chi, so, the ram that has longer length not only can provide stable support for the scale, and the ram is difficult for empting moreover, is favorable to making the length direction of scale keep higher parallelism with the slip direction of ram, makes the measurement accuracy of grating chi promote.

Inventors

ZHANG YANQIONG
MENG XIANGDONG
WANG JUNZHEN
CHEN XUE
WU YULONG

Assignees

江苏普拉迪数控科技有限公司

Dates

Publication Date: 20260508
Application Date: 20221201

Claims (7)

1. A ram drive mechanism comprising: A slide; The sliding seat is sleeved on the periphery of the sliding seat, the outer wall surface of the sliding seat comprises a matching surface clung to the inner wall surface of the sliding seat and a non-matching surface which is not contacted with the inner wall surface of the sliding seat, and The grating ruler comprises a fixed ruler and a reading head, wherein the fixed ruler extends in a strip shape along the first direction and is arranged on the non-matching surface, and the reading head is arranged on the sliding seat; the non-matching surface is recessed relative to the matching surface facing the inside of the ram to enclose a mounting groove, the mounting groove extends along the first direction, and the fixed length is accommodated in the mounting groove; The ram transmission mechanism further comprises a main shaft box, wherein the main shaft box is arranged at one end of the ram along the first direction, a containing groove is formed in the position, corresponding to the mounting groove, of the main shaft box, the containing groove is communicated with the mounting groove, and part of the sizing extends from the mounting groove to the containing groove; The sliding pillow transmission mechanism comprises a fixed length, a first mounting surface, a second mounting surface, a spacer, a first mounting surface, a second mounting surface, a sliding pillow transmission mechanism and a spacer, wherein the fixed length is mounted in the first mounting surface, the accommodating groove is provided with the first mounting surface for mounting the fixed length, the second mounting surface is used for mounting the fixed length, the second mounting surface is higher than the first mounting surface, the spacer is accommodated in the mounting groove and is clamped between the first mounting surface and the fixed length, and the side surface, away from the first mounting surface, of the spacer is flush with the second mounting surface.
2. The ram transmission mechanism according to claim 1, wherein the plurality of engagement surfaces are provided in order in the circumferential direction of the ram, the inner wall surface of the slide is simultaneously in surface-to-surface engagement with the plurality of engagement surfaces to define the sliding direction of the ram in the first direction, and the mounting groove is formed in at least one of the plurality of engagement surfaces.
3. The ram transmission mechanism of claim 1, further comprising a connector connecting the fixed dimension to the first mounting surface, wherein the spacer is provided with a through hole, the connector extends through the spacer and is received in the through hole, and the through hole extends to an edge of the spacer to form a notch through which the connector can pass.
4. The ram transmission mechanism as recited in claim 1 further comprising a bracket mounted to said headstock, said receiving slot extending in said first direction and extending through said headstock, said receiving slot having a first opening proximate said mounting slot and a second opening distal said mounting slot, a portion of said portion exposed to said second opening being mounted to said bracket to length.
5. The ram transmission mechanism of claim 1, wherein a hollow space through which the oil pipeline can pass is formed inside the ram.
6. The ram drive mechanism according to any one of claims 1 to 5, further comprising a mount mounted to the carriage, the reading head being mounted to the mount.
7. A numerically controlled machine tool comprising a ram drive mechanism as claimed in any one of claims 1 to 5.

Description

Numerical control machine tool and ram transmission mechanism thereof Technical Field The invention relates to the technical field of numerical control machining equipment, in particular to a numerical control machine tool and a ram transmission mechanism thereof. Background At present, high requirements are put on machining precision in machining processes for structural members made of aluminum alloy, steel, composite materials and the like used in the fields of aerospace, high-speed rail cars, ships and the like. In the numerical control machine, the ram transmission mechanism can realize full-closed loop control due to the grating ruler, so that the machining precision is higher, and the numerical control machine is widely applied to machining of structural members. In a conventional numerical control machine tool, when a slide seat of a slide seat transmission mechanism is sleeved on the periphery of the slide seat, the outer wall surface of the slide seat is matched with the inner wall surface of the slide seat so as to enable the slide seat to be in sliding connection with the slide seat, and the outer wall surface of the slide seat is a matching surface so that the fixed length of a grating ruler is inconvenient to install. However, because the length of the fixed length is larger, a support with a longer length is needed to provide a supporting function, and the support and the fixed length are easy to topple under the action of gravity, so that the higher parallelism between the length direction of the fixed length and the sliding direction of the ram cannot be ensured, and the measuring accuracy of the grating ruler is reduced. Disclosure of Invention Based on the above, the application provides a ram transmission mechanism for improving the measurement precision of the grating ruler, and also provides a numerical control machine tool. A ram drive mechanism comprising: A slide; The sliding seat is sleeved on the periphery of the sliding seat, the outer wall surface of the sliding seat comprises a matching surface clung to the inner wall surface of the sliding seat and a non-matching surface which is not contacted with the inner wall surface of the sliding seat, and The grating ruler comprises a fixed length and a reading head, wherein the fixed length extends along the first direction to be long-strip-shaped and is arranged on the non-matching surface, and the reading head is arranged on the sliding seat. In the ram transmission mechanism, the outer wall surface of the ram is provided with the matching surface and the non-matching surface by structural arrangement, wherein the matching surface is tightly attached to the inner wall surface of the slide seat to limit the sliding direction of the ram relative to the slide seat in the first direction, and the non-matching surface is not contacted with the inner wall surface of the slide seat and can be used for installing the fixed length of the grating ruler, so that the ram with a longer length can provide stable support for the fixed length, and is not easy to topple, the length direction of the fixed length and the sliding direction of the ram are favorable to keep higher parallelism, even if the ram and the fixed length topple slightly under the action of gravity, the length direction of the fixed length and the sliding direction of the ram can still be maintained in the same direction (namely the first direction) under the limitation of the movement of the slide seat, and the measuring accuracy of the grating ruler can be improved. In one embodiment, the non-mating surface is recessed relative to the interior of the mating surface facing the ram to define a mounting slot, the mounting slot extending in the first direction, the sizing being received in the mounting slot. In one embodiment, the plurality of matching surfaces are sequentially arranged along the circumferential direction of the ram, the inner wall surface of the sliding seat is simultaneously in surface-to-surface fit with the plurality of matching surfaces so as to limit the sliding direction of the ram to the first direction, and the mounting groove is formed on at least one of the plurality of matching surfaces. In one embodiment, the ram transmission mechanism further comprises a spindle box, the spindle box is mounted at one end of the ram in the first direction, a containing groove is formed in the position, corresponding to the mounting groove, of the spindle box, the containing groove is communicated with the mounting groove, and part of the fixed length extends from the mounting groove to the containing groove. In one embodiment, the mounting groove is provided with a first mounting surface for mounting the fixed length, the accommodating groove is provided with a second mounting surface for mounting the fixed length, the second mounting surface is higher than the first mounting surface, the ram transmission mechanism further comprises a gasket, the gasket is accommodated