A milling tool for linear guide rail machining
By employing dynamic clamping technology with bidirectional clamping and moving clamping components, the vibration and slippage problems in linear guide milling are solved, achieving high-precision and high-efficiency machining results.
Patent Information
- Application Number
- CN202521650010.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-05
- Publication Date
- 2026-08-25
- Estimated Expiration
- 2035-08-05
AI Technical Summary
In existing linear guide milling processes, the intermittent clamping method results in insufficient rigidity of the guide section, which easily leads to high-frequency vibration and slight slippage, affecting machining quality and efficiency.
By employing a bidirectional clamping assembly and a moving clamping assembly, combined with a displacement assembly and a milling assembly, dynamic clamping and synchronous movement of the linear guide rail are achieved, while vibration and slippage are suppressed by an elastic lifting assembly.
It effectively suppresses high-frequency vibration and slight slippage of the guide rail caused by radial cutting force, avoids surface ripples on the guide groove and tool chipping, and improves machining accuracy and efficiency.
Smart Images
Figure CN224674349U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of linear guide machining technology, and specifically relates to a milling fixture for linear guide machining. Background Technology
[0002] The guide groove of a linear guide is the core structure for achieving precision sliding. Its groove width accuracy, bottom roughness, and perpendicularity to the reference surface directly determine the smoothness of the slider's operation. When milling the guide groove, the design of the tooling is particularly crucial: it must simultaneously ensure precise contact between the workpiece's (guide rail's) bottom and side surfaces and the positioning reference, and enhance the overall rigidity of the guide rail through effective clamping force. This dual guarantee from the tooling is key to obtaining high-quality milling results.
[0003] When milling linear guides (especially deep groove milling or machining of carbide materials), existing technologies typically use clamping points (such as bolt plates or pneumatic grippers) spaced apart along the guide length. However, this discretely distributed clamping force can easily lead to insufficient rigidity in the guide section between adjacent clamping points. When subjected to the impact of milling (especially radial cutting forces), these weak sections are prone to high-frequency vibration and slight slippage. The consequences include chatter marks on the guide groove surface, tool chipping, and ultimately, a decrease in machining efficiency. Utility Model Content
[0004] To address the problem that the intermittent clamping method can easily lead to high-frequency vibration and slight slippage during the milling of linear guides, this utility model proposes a milling fixture for machining linear guides to overcome the aforementioned technical problems existing in the prior art.
[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model is a milling fixture for machining linear guide rails, including a support frame, a bidirectional clamping assembly inside the support frame, a displacement assembly at the top of the support frame, a milling assembly at the moving end of the displacement assembly, a movable clamping assembly inside the milling assembly, and an elastic lifting assembly at the guide end of the movable clamping assembly. The bidirectional clamping assembly is used to clamp and fix both ends of the linear guide rail. The displacement assembly drives the movable clamping assembly to move through the milling assembly, so that the movable clamping assembly clamps the milled position of the linear guide rail.
[0006] Furthermore, the bidirectional clamping assembly includes a placement plate, which is fixedly installed inside the support frame. Two clamping blocks are symmetrically arranged on the top of the placement plate. A clamping groove is formed on the top of each clamping block. A drive rod is fixedly connected to both sides of the clamping block. A first bidirectional screw is rotatably connected inside the support frame. The first bidirectional screw is threadedly connected to the drive rod. A guide rod is fixedly connected inside the support frame. The drive rod is movably connected to the guide rod.
[0007] Furthermore, a storage groove is provided inside the clamping groove, and a second bidirectional screw is rotatably connected inside the storage groove. Two clamping plates are threadedly connected to the outer surface of the second bidirectional screw.
[0008] Furthermore, the displacement component includes a mounting base, multiple of which are fixedly mounted on the top of the support frame. A drive motor is fixedly mounted inside the mounting base, and a drive screw is fixedly connected to the output end of the drive motor. Two drive screws are symmetrically arranged, and a moving block is threadedly connected to the outer surface of the drive screw. A connecting rod is fixedly connected between the two moving blocks.
[0009] Furthermore, the milling assembly includes a movable base, which is movably connected to a connecting rod. A lifting base is provided inside the movable base, and a milling motor is fixedly installed on the top of the lifting base. The output end of the milling motor passes through the lifting base and is fixedly installed with a milling cutter.
[0010] Furthermore, the movable clamping assembly includes a fixed plate, which is provided on both the inner and outer sides of the movable block. A fixed rod is fixedly connected to the bottom of the fixed plate, and a support block is movably connected to the outer surface of the fixed rod. A clamping screw is threadedly connected to one side of the support block. One end of the clamping screw passes through the support block and is rotatably connected to the movable clamping plate. Two limiting rods are fixedly connected to one side of the movable clamping plate, and the limiting rods are movably connected to the support block.
[0011] Furthermore, the elastic lifting assembly includes a spring, with both ends of the spring fixedly connected to a fixed plate and a support block, respectively. An L-shaped lifting rod is fixedly connected to the outer surface of each of the two limiting rods. A trapezoidal block is fixedly connected to the outer surface of the driving rod corresponding to the L-shaped lifting rod. Several ball bearings are rotatably connected to the other side of the movable clamping plate, the bottom of the movable clamping plate, and the bottom end of the L-shaped lifting rod.
[0012] This utility model has the following beneficial effects: 1. After the linear guide is clamped and positioned by the bidirectional clamping component and the movable clamping component, the displacement component drives the milling component to start the milling of the guide groove. During this process, the movable clamping component not only provides clamping force, but also moves synchronously with the milling component. This dynamic following ensures that the movable clamping component can continuously provide effective clamping for the current machining position of the linear guide. The above settings effectively suppress the high-frequency vibration and slight slippage of the guide caused by radial cutting force, thereby avoiding the occurrence of surface vibration marks on the guide groove and tool chipping.
[0013] 2. This utility model uses two moving blocks, two moving clamping plates, and a milling cutter for movement. When the moving clamping plates are about to contact the clamping plates, the ball bearings at the bottom of the L-shaped lifting rod can roll on the inclined surface of the trapezoidal block. At this time, the limiting rod can drive the moving clamping plates to the top of the clamping plates under the lifting of the L-shaped lifting rod. The above arrangement ensures that when the milling cutter is milling the guide groove of the linear guide rail inside the clamping groove, the moving clamping plates will not obstruct the movement path of the milling cutter.
[0014] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the utility model embodiments, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the external outline structure of this utility model; Figure 2 This is a schematic diagram of the displacement component structure of this utility model; Figure 3 This is a schematic diagram of the bidirectional clamping assembly structure of this utility model; Figure 4 This is a schematic diagram of the clamping block structure of this utility model; Figure 5 This is a schematic diagram of the milling component structure of this utility model; Figure 6 This is a schematic diagram of the movable clamping component structure of this utility model; Figure 7 This is a schematic diagram of the movable clamping plate structure of this utility model.
[0017] The attached diagram lists the components represented by each number as follows: 1. Support frame; 2. Two-way clamping assembly; 201. Placement plate; 202. Clamping block; 203. Clamping slot; 204. Drive rod; 205. First two-way screw; 206. Guide rod; 207. Storage slot; 208. Second two-way screw; 209. Clamping plate; 3. Displacement assembly; 301. Mounting base; 302. Drive motor; 303. Drive screw; 304. Moving block; 305. Connecting rod 4. Milling assembly; 401. Moving seat; 402. Lifting seat; 403. Milling motor; 404. Milling cutter; 5. Moving clamping assembly; 501. Fixing plate; 502. Fixing rod; 503. Support block; 504. Clamping screw; 505. Moving clamping plate; 506. Limiting rod; 6. Elastic lifting assembly; 601. Spring; 602. L-shaped lifting rod; 603. Trapezoidal block; 604. Ball bearing. Detailed Implementation
[0018] The technical solutions of the utility model embodiments will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, and not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the utility model.
[0019] In the description of this utility model, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc., which indicate orientation or positional relationship, are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the utility model.
[0020] Please see Figures 1-7 As shown, this utility model is a milling fixture for machining linear guide rails, including a support frame 1. The support frame 1 is provided with a bidirectional clamping assembly 2 inside. The top of the support frame 1 is provided with a displacement assembly 3. The moving end of the displacement assembly 3 is provided with a milling assembly 4. The milling assembly 4 is provided with a movable clamping assembly 5 inside. The guide end of the movable clamping assembly 5 is provided with an elastic lifting assembly 6. The bidirectional clamping assembly 2 is used to clamp and fix both ends of the linear guide rail. The displacement assembly 3 drives the movable clamping assembly 5 to move through the milling assembly 4, so that the movable clamping assembly 5 clamps the milling position of the linear guide rail.
[0021] The two ends of the linear guide are clamped and fixed by the bidirectional clamping component 2, and the clamping end of the movable clamping component 5 is driven, so that the clamping end of the movable clamping component 5 clamps and fixes the movable guide located below the milling component 4; when the displacement component 3 drives the milling component 4 to move and the milling component 4 mills the guide groove of the linear guide, the movable clamping component 5 can move together with the milling component 4.
[0022] After the linear guide is clamped and positioned by the bidirectional clamping assembly 2 and the movable clamping assembly 5, the displacement assembly 3 drives the milling assembly 4 to start the milling of the guide groove. During this process, the movable clamping assembly 5 not only provides clamping force, but also moves synchronously with the milling assembly 4. This dynamic following ensures that the movable clamping assembly 5 can continuously provide effective clamping for the current machining position of the linear guide. The above settings effectively suppress the high-frequency vibration and slight slippage of the guide caused by radial cutting force, thereby avoiding the occurrence of surface chatter marks on the guide groove and tool chipping.
[0023] In one embodiment, the bidirectional clamping assembly 2 includes a placement plate 201, which is fixedly installed inside the support frame 1. Two clamping blocks 202 are symmetrically arranged on the top of the placement plate 201. The top of each clamping block 202 has a clamping groove 203. Drive rods 204 are fixedly connected to both sides of each clamping block 202. A first bidirectional screw 205 is rotatably connected inside the support frame 1. The first bidirectional screw 205 is threadedly connected to the drive rod 204. A guide rod 206 is fixedly connected inside the support frame 1. The drive rod 204 is movably connected to the guide rod 206.
[0024] By placing the linear guide rail inside the two clamping slots 203 and then rotating the first bidirectional screw 205, the two clamping blocks 202 can move simultaneously toward the center position of the support frame 1 under the drive of the first bidirectional screw 205 and the guidance of the guide rod 206, so that the two ends of the linear guide rail can contact the inner wall of the corresponding clamping slot 203. The setting of the clamping blocks 202 with adjustable position allows the milling fixture to clamp and position linear guide rails of different lengths, thereby improving the overall applicability of the milling fixture.
[0025] In one embodiment, the clamping groove 203 has a storage groove 207 inside, and a second bidirectional screw 208 is rotatably connected inside the storage groove 207. Two clamping plates 209 are threadedly connected to the outer surface of the second bidirectional screw 208.
[0026] The second bidirectional screw 208 is rotated, which drives the two clamping plates 209 to move and make them contact the front and rear sides of the linear guide. The clamping plates 209 cooperate with the clamping grooves 203, so that the two ends of the linear guide are not easy to wobble after positioning. At the same time, since the bottom of the clamping plates 209 is in contact with the inner wall of the clamping grooves 203, the two clamping plates 209 can move straight when the second bidirectional screw 208 drives them.
[0027] In one embodiment, the displacement component 3 includes a mounting base 301. Multiple mounting bases 301 are fixedly mounted on the top of the support frame 1. A drive motor 302 is fixedly mounted inside the mounting base 301. A drive screw 303 is fixedly connected to the output end of the drive motor 302. Two drive screws 303 are symmetrically arranged. A moving block 304 is threadedly connected to the outer surface of the drive screw 303. A connecting rod 305 is fixedly connected between the two moving blocks 304.
[0028] By driving the drive screw 303 through the drive motor 302, the drive screw 303 can drive the moving block 304 to move. At the same time, the moving block 304 can drive the milling assembly 4 to move on the linear guide rail, so that the milling assembly 4 can mill the guide rail groove on the linear guide rail. In the above configuration, since there are two drive screws 303 and the two moving blocks 304 are connected together by the connecting rod 305, the two moving blocks 304 can move synchronously and the stability during movement can be guaranteed.
[0029] In one embodiment, the milling assembly 4 includes a movable seat 401, which is movably connected to a connecting rod 305. A lifting seat 402 is provided inside the movable seat 401. A milling motor 403 is fixedly installed on the top of the lifting seat 402. The output end of the milling motor 403 passes through the lifting seat 402 and a milling cutter 404 is fixedly installed thereon.
[0030] After the linear guide is positioned, the milling motor 403 drives the milling cutter 404 to rotate, and the lifting motor drives the lifting screw, which in turn drives the milling cutter 404 downward through the lifting seat 402, so that the milling cutter 404 can rotate and contact the linear guide. Then, the moving motor drives the moving seat 401 to move back and forth through the moving screw, so that the milling cutter 404 can move back and forth on the linear guide. At the same time, the moving block 304, driven by the driving screw 303, drives the milling cutter 404 to move linearly while moving back and forth on the linear guide through the moving seat 401 and the lifting seat 402, so that the guide groove can be formed on the linear guide.
[0031] In one embodiment, the movable clamping assembly 5 includes a fixed plate 501, which is provided on both the inner and outer sides of the movable block 304. A fixed rod 502 is fixedly connected to the bottom of the fixed plate 501. A support block 503 is movably connected to the outer surface of the fixed rod 502. A clamping screw 504 is threadedly connected to one side of the support block 503. One end of the clamping screw 504 passes through the support block 503 and is rotatably connected to a movable clamping plate 505. Two limiting rods 506 are fixedly connected to one side of the movable clamping plate 505. The limiting rods 506 are movably connected to the support block 503.
[0032] After clamping and positioning both sides of the linear guide rail, the clamping screws 504 on the two moving blocks 304 are rotated, so that the two moving clamping plates 505 move under the drive of the corresponding clamping screws 504 and the guide of the limiting rod 506 and come into contact with the linear guide rail. At this time, the two moving clamping plates 505 can clamp the linear guide rail. When the two moving blocks 304 move, the two moving blocks 304 can drive the clamping screws 504 and the limiting rod 506 to move together through the fixing rod 502 and the support block 503, so that the two moving clamping plates 505 can move synchronously with the milling cutter 404.
[0033] In one embodiment, the elastic lifting assembly 6 includes a spring 601, with both ends of the spring 601 fixedly connected to a fixed plate 501 and a support block 503, respectively. L-shaped lifting rods 602 are fixedly connected to the outer surfaces of both limiting rods 506. A trapezoidal block 603 is fixedly connected to the outer surface of the drive rod 204 corresponding to the L-shaped lifting rod 602. A plurality of ball bearings 604 are rotatably connected to the other side of the movable clamping plate 505, the bottom of the movable clamping plate 505, and the bottom end of the L-shaped lifting rod 602.
[0034] When the movable clamping plate 505 is about to contact the clamping plate 209, the ball bearing 604 at the bottom of the L-shaped lifting rod 602 can contact the inclined surface of the trapezoidal block 603. At this time, as the movable clamping plate 505 moves continuously, the ball bearing 604 at the bottom of the L-shaped lifting rod 602 can roll on the inclined surface of the trapezoidal block 603. At the same time, the L-shaped lifting rod 602 can lift the limiting rod 506 through the inclined surface, so that the L-shaped lifting rod 602 can compress the spring 601 through the support block 503. Meanwhile, the movable clamping plate 505 can move upward continuously and directly... The moving clamping plate 505 moves to the top of the clamping plate 209. The above arrangement ensures that the moving clamping plate 505 will not obstruct the milling cutter 404 when milling the guide rail groove inside the clamping groove 203. The moving clamping plate 505 can clamp and fix the linear guide rail through the ball bearing 604 on the other side. This arrangement ensures that the moving clamping plate 505 will not cause wear to the outer surface of the linear guide rail when it moves on the outer surface of the linear guide rail. At the same time, the ball bearing at the bottom of the moving clamping plate 505 ensures that the friction between the two is small when the moving clamping plate 505 moves on the top of the clamping plate 209.
[0035] Through the above technical solution, 1. After the linear guide is clamped and positioned by the bidirectional clamping component 2 and the moving clamping component 5, the displacement component 3 drives the milling component 4 to start the milling of the guide groove. During this process, the moving clamping component 5 not only provides clamping force, but also moves synchronously with the milling component 4. This dynamic following ensures that the moving clamping component 5 can continuously provide effective clamping for the current machining position of the linear guide. The above settings effectively suppress the high-frequency vibration and slight slippage of the guide caused by radial cutting force, thereby avoiding the occurrence of surface vibration marks on the guide groove and tool chipping.
[0036] 2. The two moving blocks 304, the two moving clamping plates 505, and the milling cutter 404 move together. When the moving clamping plates 505 are about to come into contact with the clamping plate 209, the ball bearings 604 at the bottom of the L-shaped lifting rod 602 can roll on the inclined surface of the trapezoidal block 603. At this time, the limiting rod 506 can drive the moving clamping plates 505 to the top of the clamping plate 209 under the lifting of the L-shaped lifting rod 602. The above arrangement ensures that when the milling cutter 404 is milling the guide rail groove of the linear guide rail inside the clamping groove 203, the moving clamping plates 505 will not obstruct the movement path of the milling cutter 404.
[0037] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0038] The preferred embodiments of the utility model disclosed above are merely illustrative of the utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the utility model, thereby enabling those skilled in the art to better understand and utilize it. The utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A milling fixture for machining linear guides, comprising a support frame (1), characterized in that, The support frame (1) is provided with a bidirectional clamping assembly (2) inside, a displacement assembly (3) is provided on the top of the support frame (1), a milling assembly (4) is provided at the moving end of the displacement assembly (3), a moving clamping assembly (5) is provided inside the milling assembly (4), and an elastic lifting assembly (6) is provided at the guide end of the moving clamping assembly (5). The bidirectional clamping assembly (2) is used to clamp and fix the two ends of the linear guide rail. The displacement assembly (3) drives the moving clamping assembly (5) to move through the milling assembly (4), so that the moving clamping assembly (5) clamps the milling position of the linear guide rail.
2. The milling fixture for machining linear guides according to claim 1, characterized in that, The bidirectional clamping assembly (2) includes a placement plate (201), which is fixedly installed inside the support frame (1). Two clamping blocks (202) are symmetrically arranged on the top of the placement plate (201). A clamping groove (203) is opened on the top of the clamping block (202). A drive rod (204) is fixedly connected to both sides of the clamping block (202). A first bidirectional screw (205) is rotatably connected inside the support frame (1). The first bidirectional screw (205) is threadedly connected to the drive rod (204). A guide rod (206) is fixedly connected inside the support frame (1). The drive rod (204) is movably connected to the guide rod (206).
3. The milling fixture for machining linear guideways according to claim 2, characterized in that, The clamping groove (203) has a storage groove (207) inside, and a second bidirectional screw (208) is rotatably connected inside the storage groove (207). Two clamping plates (209) are threadedly connected to the outer surface of the second bidirectional screw (208).
4. The milling fixture for machining linear guideways according to claim 3, characterized in that, The displacement component (3) includes a mounting base (301), and multiple mounting bases (301) are fixedly installed on the top of the support frame (1). A drive motor (302) is fixedly installed inside the mounting base (301). A drive screw (303) is fixedly connected to the output end of the drive motor (302). Two drive screws (303) are symmetrically arranged. A moving block (304) is threadedly connected to the outer surface of the drive screw (303). A connecting rod (305) is fixedly connected between the two moving blocks (304).
5. A milling fixture for machining linear guideways according to claim 4, characterized in that, The milling assembly (4) includes a movable seat (401), which is movably connected to a connecting rod (305). A lifting seat (402) is provided inside the movable seat (401). A milling motor (403) is fixedly installed on the top of the lifting seat (402). The output end of the milling motor (403) passes through the lifting seat (402) and is fixedly installed with a milling cutter (404).
6. A milling fixture for machining linear guideways according to claim 3, characterized in that, The movable clamping assembly (5) includes a fixed plate (501), which is provided on both the inner and outer sides of the movable block (304). A fixed rod (502) is fixedly connected to the bottom of the fixed plate (501), and a support block (503) is movably connected to the outer surface of the fixed rod (502). A clamping screw (504) is threadedly connected to one side of the support block (503). One end of the clamping screw (504) passes through the support block (503) and is rotatably connected to a movable clamping plate (505). Two limiting rods (506) are fixedly connected to one side of the movable clamping plate (505), and the limiting rods (506) are movably connected to the support block (503).
7. A milling fixture for machining linear guideways according to claim 6, characterized in that, The elastic lifting assembly (6) includes a spring (601), the two ends of which are fixedly connected to a fixed plate (501) and a support block (503) respectively. The outer surfaces of the two limiting rods (506) are fixedly connected to L-shaped lifting rods (602). The outer surface of the driving rod (204) is fixedly connected to a trapezoidal block (603) corresponding to the L-shaped lifting rod (602). The other side of the movable clamping plate (505), the bottom of the movable clamping plate (505), and the bottom end of the L-shaped lifting rod (602) are rotatably connected to several balls (604).