Drawing type workbench
By adopting a double-rail design with fixed and movable side linear rail groups on the CNC machine tool worktable, the worktable can be extended in a stepped manner, which solves the problems of small extension and insufficient load-bearing capacity in the existing technology, and improves the stability and service life of the worktable.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-13
- Publication Date
- 2026-04-14
AI Technical Summary
The existing CNC machine tool worktable has a small extension range and insufficient load-bearing capacity, making it prone to tipping over due to center of gravity shift.
The double-rail system, consisting of a fixed side rail assembly and a movable side rail assembly, enables the worktable to extend in a stepped manner. Stability and load-bearing capacity are ensured through the cooperation of limit anti-collision blocks and sliders.
The workbench can extend up to 70% of its width, far exceeding the 40% of a single linear guide, which improves load-bearing capacity and stability, reduces vibration, and extends service life.
Smart Images
Figure CN224115628U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of CNC machine tools, specifically relating to a pull-out worktable. Background Technology
[0002] The worktable of a CNC machine tool is generally a fixed surface. However, in some special work requirements, the worktable needs to be pulled out like a drawer to facilitate workpiece replacement. For this reason, linear guides, also known as linear rails, are often installed under the worktable. Linear rails are components used to support and guide motion, making reciprocating linear motion in a given direction. They can be divided into sliding friction linear rails, rolling friction linear rails, elastic friction linear rails, and fluid friction linear rails, etc.
[0003] CNC machine tool worktables often use rolling friction linear guides, with two linear guides as a group, laid on both sides of the worktable. This type of worktable uses a single linear guide group, with a small extension, only about 40% of the width of the worktable itself. Moreover, the load-bearing capacity is small when extended, and in severe cases, the worktable may tip over due to the shift of the center of gravity. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide a pull-out worktable that addresses the shortcomings of the existing technology. This worktable extends in a stepped, segmented manner, allowing it to extend up to 70% of its width and improving its load-bearing capacity.
[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a pull-out workbench, including a workbench plate, a workbench base, a fixed side rail assembly, a movable side rail assembly, and a base support. The workbench plate is installed on the upper side of the workbench base, and the workbench base is located on the upper side of the base support. The workbench plate and the base support are slidably connected. The fixed side rail assembly includes two rails, which are symmetrically fixed on both sides of the top of the base support. Two sliders are slidably connected to each rail. The movable side rail assembly includes two… Two linear guides are symmetrically connected to the bottom sides of the workbench. One linear guide is arranged parallel to the inner side of each linear guide. Two sliders are slidably connected to each linear guide. The two sliders and two sliders on the same side of the workbench are connected by a connecting plate. Two limiting anti-collision blocks are fixed on the side of each linear guide to limit the movement of the workbench along the fixed side linear guide group. Two limiting anti-collision blocks are fixed on the side of each linear guide to limit the movement of the workbench along the movable side linear guide group.
[0006] The working process of this pull-out worktable is as follows: Pulling the worktable forward causes the two movable side rails (rail 2) and four limiting anti-collision blocks (block 2) to move forward synchronously with the worktable. When the limiting anti-collision block (block 2) in front of each rail 2 contacts the slider (block 2) in front of the rail 2, the two movable side rails (rail 2) stop moving forward. Meanwhile, the slider (block 2), connecting plate (block 1), and sliding block (block 2) begin to move forward synchronously, driving the worktable to continue moving forward until the slider (block 1) behind each rail 1 contacts the limiting anti-collision block (block 1) behind the rail 1, at which point the worktable extends. Similarly, to retract the worktable, push it backward until the limiting anti-collision block (block 2) behind each rail 2 contacts the slider (block 2) behind the rail 2, completing the retraction action.
[0007] This utility model of a pull-out workbench uses a double rail system consisting of a fixed side rail group and a movable side rail group to extend the workbench's reach, achieving a stepped, segmented extension of the workbench. The workbench can extend to 70% of its own width, which is much greater than the approximately 40% extension of a workbench using a single rail system. Furthermore, because there are two rails on each side of the workbench, the workbench has good load-bearing capacity and stability.
[0008] Preferably, two caster plates are symmetrically fixed to the front top of the base bracket. Each caster plate is positioned on the outer side of one of the linear guide rails. A caster is installed on each side of the bottom of the worktable, with each caster pressing against one of the caster plates. When the worktable is pulled, the casters roll along the caster plates, facilitating manual pulling by the operator. Before the worktable is fully retracted, the casters return to their original position on the caster plates and press against them, providing braking and shock absorption. Furthermore, the casters further enhance the load-bearing capacity of the worktable.
[0009] Preferably, a connecting plate 2 is fixed to each of the two sides of the bottom of the workbench, and each of the linear guides 2 is fixed to one of the connecting plates 2. The design of the connecting plates 2 facilitates the installation of the linear guides 2.
[0010] Preferably, a plurality of anti-vibration blocks are arranged between the worktable plate and the worktable base, and the worktable plate is supported by the plurality of anti-vibration blocks. The plurality of anti-vibration blocks can significantly reduce the vibration of the worktable plate during operation, improve the reliability of the overall structure of the worktable, and extend its service life.
[0011] Preferably, two limiting blocks and one positioning seat are fixed to the top two sides of the base support, and one limiting block is fixed to the bottom two sides of the worktable. The movement of the limiting block on the same side of the worktable is limited between the two limiting blocks. The positioning seats on both sides of the worktable are used for lateral positioning of the worktable. The function of the limiting blocks is to further improve the safety of the worktable and prevent it from derailing in case of accident.
[0012] Preferably, the workbench is equipped with several handles on its side to facilitate manual pushing and pulling of the workbench.
[0013] Compared with the prior art, the present invention has the following advantages: The structure of the pull-out workbench of the present invention is reliable. It uses a double rail group consisting of a fixed side rail group and a movable side rail group to extend the workbench by increasing the extension amount. This allows the workbench to extend by 70% of its own width, which is much greater than the extension amount of about 40% for a workbench using a single rail group. Furthermore, since there are two rails on each side of the workbench, the workbench has good load-bearing capacity and stability. Attached Figure Description
[0014] Figure 1 This is a front view of the pull-out worktable in the embodiment;
[0015] Figure 2 This is a top view of the pull-out worktable in the embodiment;
[0016] Figure 3 This is a left view of the pull-out worktable in the embodiment;
[0017] Figure 4 This is a front view of the pull-out worktable in the embodiment;
[0018] Figure 5 for Figure 4 Enlarged view of point A in the middle;
[0019] Figure 6 for Figure 4 Enlarged view at point B in the middle;
[0020] Figure 7 To hide the workbench Figure 4 A top-down magnified view of the location corresponding to point A in the middle;
[0021] The specific reference numerals in the diagram are as follows: 1-Workbench, 11-Handle, 12-Connecting Plate II, 13-Limiting Block II, 2-Workbench Base, 21-Anti-vibration Block, 3-Fixed Side Rail Assembly, 31-Railway I, 32-Slider I, 33-Limiting Anti-collision Block I, 4-Modible Side Rail Assembly, 41-Railway II, 42-Slider II, 43-Limiting Anti-collision Block II, 5-Base Bracket, 51-Caser Plate, 52-Caser, 53-Limiting Block I, 54-Positioning Seat I, 6-Connecting Plate I. Detailed Implementation
[0022] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Any devices or components not limited in this invention employ conventional techniques in the art.
[0023] The pull-out worktable in the embodiment, such as Figures 1 to 7 As shown, the system includes a worktable 1, a worktable base 2, a fixed side rail assembly 3, a movable side rail assembly 4, and a base support 5. Several handles 11 are installed on the side of the worktable 1. The worktable 1 is mounted on the upper side of the worktable base 2. Several anti-vibration blocks 21 are arranged between the worktable 1 and the worktable base 2, and the worktable 1 is supported by these anti-vibration blocks 21. The worktable base 2 is located on the upper side of the base support 5, and the worktable 1 and the base support 5 are slidably connected. The fixed side rail assembly 3 includes two rails 31, which are symmetrically fixed on both sides of the top of the base support 5. Two sliders 32 are slidably connected to each rail 31. The movable side rail assembly 4 includes two rails 41, which are connected to each other. The bottom sides of the worktable 1 are connected to each other. Specifically, a connecting plate 2 12 is fixed on each side of the bottom of the worktable 1. Each linear guide 2 41 is fixed on a connecting plate 2 12. A linear guide 2 41 is arranged in parallel on the inner side of each linear guide 1 31. Two sliders 2 42 are slidably connected on each linear guide 2 41. The two sliders 1 32 and the two sliders 2 42 on the same side of the worktable 1 are connected by a connecting plate 1 6. Two limit anti-collision blocks 1 33 are fixed on the side of each linear guide 1 to limit the movement of the worktable 1 along the fixed side linear guide group 3. Two limit anti-collision blocks 2 43 are fixed on the side of each linear guide 2 41 to limit the movement of the worktable 1 along the movable side linear guide group 4.
[0024] In this embodiment, the base support 5 is welded from square steel pipes and serves as the main frame of the workbench. The height of the workbench 1 is approximately at waist level, facilitating the operator's pulling and unpulling of the workbench 1. Two caster plates 51 are symmetrically fixed to the front top of the base support 5. Each caster plate 51 is positioned on the outer side of a linear guide rail 31. A caster 52 is installed on each side of the bottom of the workbench 1, with each caster 52 pressing against a caster plate 51.
[0025] In this embodiment, two limiting blocks 53 and a positioning seat 54 are fixed on the top two sides of the base bracket 5, and a limiting block 13 is fixed on the bottom two sides of the worktable 1. The movement of the limiting block 13 on the same side of the worktable 1 is limited between the two limiting blocks 53. The positioning seats 54 on both sides of the worktable 1 are used to position the worktable 1 laterally.
[0026] The working process of the above-mentioned pull-out worktable is as follows: When the worktable 1 is pulled forward, the two linear guides 41 and the four limiting anti-collision blocks 43 on the movable side move forward synchronously with the worktable 1. When the limiting anti-collision block 43 located in front of each linear guide 41 contacts the slider 42 in front of the linear guide 41, the two linear guides 41 on the movable side stop moving forward, while the slider 42, connecting plate 6, and sliding block move forward synchronously, driving the worktable 1 to continue moving forward until the slider 32 located behind each linear guide 31 contacts the limiting anti-collision block 33 behind the linear guide 31 and stops moving. At this time, the extension action of the worktable 1 is completed, realizing the stepped segmented extension of the worktable 1. Similarly, when it is necessary to retract the worktable 1, push the worktable 1 backward until the limiting anti-collision block 43 located behind each linear guide 41 contacts the slider 42 behind the linear guide 41, and the retraction action of the worktable 1 is completed. Figures 1 to 7 The middle workbench 1 is in the retracted state.
[0027] The worktable 1 is in a rolling friction state during movement, which facilitates the pulling out of the worktable 1. The worktable 1 is limited by the corresponding limit anti-collision block 33 and limit anti-collision block 43. Its movement stroke is limited between the two limit blocks 53 on both sides to prevent derailment and ensure safety.
[0028] The aforementioned pull-out workbench can extend the workbench plate 1 by 830mm at its limit, which is about 70% of the width of the workbench plate 1 itself, much larger than the extension of about 40% of the workbench plate using a single linear guide. When the workbench plate 1 moves, it mainly relies on rolling friction, and the operator can push and pull the workbench plate 1 by hand. The workbench plate 1 is supported by several anti-vibration blocks 21, which can greatly reduce the vibration of the workbench plate 1 during operation, improve the reliability of the overall structure of the workbench, and extend its service life.
Claims
1. A pull-out worktable, characterized in that, The system includes a worktable, a worktable base, a fixed side rail assembly, a movable side rail assembly, and a base support. The worktable is mounted on the upper side of the worktable base, and the worktable base is located on the upper side of the base support. The worktable and the base support are slidably connected. The fixed side rail assembly includes two rails (rail 1), which are symmetrically fixed on both sides of the top of the base support. Each rail (rail 1) has two sliders (slidably connected). The movable side rail assembly includes two rails (rail 2), which are symmetrically connected... On both sides of the bottom of the workbench, a second linear guide is arranged in parallel on the inner side of each first linear guide. Two sliders are slidably connected to each second linear guide. The two sliders and two sliders on the same side of the workbench are connected by a connecting plate. Two limit anti-collision blocks are fixed on the side of each first linear guide to limit the movement of the workbench along the fixed side linear guide group. Two limit anti-collision blocks are fixed on the side of each second linear guide to limit the movement of the workbench along the movable side linear guide group.
2. A pull-out workbench according to claim 1, characterized in that, Two caster plates are symmetrically fixed to the front of the top of the base bracket. Each caster plate is set on the outside of one of the linear guides. A caster is installed on each side of the bottom of the workbench, and each caster presses against one of the caster plates.
3. A pull-out workbench according to claim 1, characterized in that, A connecting plate 2 is fixed on each of the two sides of the bottom of the workbench, and each of the linear guides 2 is fixed on one of the connecting plates 2.
4. A pull-out workbench according to claim 1, characterized in that, A plurality of anti-vibration blocks are arranged between the workbench plate and the workbench base, and the workbench plate is supported by the plurality of anti-vibration blocks.
5. A pull-out workbench according to claim 1, characterized in that, Two limiting blocks and one positioning seat are fixed to the top two sides of the base bracket, and one limiting block is fixed to the bottom two sides of the worktable. The movement of the limiting block on the same side of the worktable is limited between the two limiting blocks. The positioning seats on both sides of the worktable are used to position the worktable laterally.
6. A pull-out workbench according to claim 1, characterized in that, Several handles are installed on the side of the workbench.