A guide seat structure, chain type tool magazine and machine tool

Abstract

The application relates to the technical field of CNC machine tools, and provides a guide tool holder structure, a chain tool magazine and a machine tool. The guide tool holder structure is arranged on a guide rail of a tool magazine transmission structure. The guide tool holder structure comprises a tool holder body, a tool mounting position on one side of the tool holder body, and a guide mounting position opposite to the tool mounting position. A first roller is rotationally arranged on the guide mounting position and is used for rolling on the upper surface of the guide rail. A second roller is rotationally arranged on the guide mounting position and is arranged below the first roller. The second roller is used for rolling on the lower surface of the guide rail. The problem that the rollers are prone to deviating from the guide rail when the chain is loosened during long-time transmission operation in the prior art is solved.

Description

Technical Field

[0001] This application relates to the field of CNC machine tool technology, and more specifically, to a guide tool holder structure, a chain tool magazine, and a machine tool. Background Technology

[0002] CNC machine tools are widely used in the machining of precision parts and products due to their small size and high machining accuracy. However, with the increasing complexity of products and the continuous improvement of machining requirements, existing CNC machine tools require a sufficiently large tool magazine capacity. Therefore, existing CNC machine tools are usually equipped with disc tool magazines or chain tool magazines. Chain tool magazines are a type of tool storage or tool changing device in CNC machining centers. Due to their large capacity, they are increasingly widely used in CNC machine tools; for example, CNC machining centers typically use chain tool magazines.

[0003] Chain-type tool magazines typically detachably mount tools onto tool holder structures. Multiple tool holder structures are sequentially arranged on a chain. Through the chain's cyclical transmission, the tool holder structures, carrying the tools, move to the tool changing position. At the tool changing position, a tool changing arm transfers the tools from the tool holders to the spindle, thus changing the tools. During chain transmission, guide rails are usually required to guide the movement of the tool holders. However, existing tool holder structures often only use a single roller sliding on the upper surface of the guide rail for guidance. This is prone to misalignment on the guide rail surface due to vibration or shaking during chain transmission. Especially after prolonged chain operation, loosening can easily occur, causing the roller to deviate from the guide rail and leading to equipment malfunction.

[0004] Therefore, existing technologies still need to be improved and developed. Utility Model Content

[0005] The purpose of this application is to provide a guide tool holder structure, a chain tool magazine, and a machine tool, which solves the problem that in the case of long-term chain transmission and loosening, the rollers are prone to deviate from the guide track.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] On the one hand, this application provides a guide tool holder structure for being installed on the guide rail of a tool magazine transfer structure, wherein the guide tool holder structure includes: a tool holder body, the tool holder body including a tool loading position on one side, and a guide mounting position disposed opposite to the tool loading position;

[0008] The first roller is rotatably mounted on the guide mounting position and is used to roll against the upper surface of the guide rail;

[0009] The second roller is rotatably mounted on the guide mounting position and spaced below the first roller. The second roller is used to roll against the lower surface of the guide rail.

[0010] Optionally, the first roller includes:

[0011] The first wheel body has a through hole in its central axis;

[0012] The first fastener passes through the through hole of the first wheel body and is screwed onto the guide mounting position. The first wheel body rotates on the first fastener.

[0013] Optionally, the second roller includes:

[0014] The second wheel body has a through hole in its central axis;

[0015] The second fastener passes through the through hole of the second wheel body and is screwed onto the guide mounting position, and the second wheel body rotates on the second fastener.

[0016] Optionally, the guide mounting position is provided with bosses spaced apart along the vertical direction, and threaded holes are provided on both the upper and lower bosses;

[0017] The first and second fasteners are screwed into the threaded holes of the upper and lower bosses, respectively.

[0018] Optionally, a hinge seat and a hinge block are respectively provided on the left and right sides of the guide mounting position;

[0019] A chain hinge block of one guide tool holder structure is inserted into the chain hinge seat of another guide tool holder structure, so that multiple guide tool holder structures are hinged sequentially.

[0020] Optionally, the chain hinge seat includes: an upper connecting post and a lower connecting post, both of which are provided with a first hinge through hole, and a hinge space is formed between the upper connecting post and the lower connecting post.

[0021] A hinge rod is provided through the first hinge through hole and is installed on the upper connecting post and the lower connecting post;

[0022] The first wear-resistant bushing is disposed in the first hinge through hole and sleeved on the hinge rod;

[0023] A second hinge through hole is provided through the chain hinge block, the chain hinge block is inserted into the hinge space, and the hinge rod passes through the second hinge through hole;

[0024] A second anti-wear bushing is provided in the second hinge through hole and is fitted onto the hinge rod.

[0025] Optionally, the upper and lower ends of the hinge rod are respectively connected to the rolling wheel, and the rolling wheel is rotatably connected to the hinge rod.

[0026] On the other hand, this application also proposes a chain-type tool magazine, including: a tool magazine transmission structure, and multiple guide tool holder structures as described above, wherein the multiple guide tool holder structures are hinged end to end to form a tool holder chain;

[0027] The tool magazine transmission structure includes: transmission rails located on the upper and lower sides, and guide rail located in the middle;

[0028] The tool holder chain is mounted on the upper and lower transmission rails and moves by being driven by the upper and lower transmission rails.

[0029] The first and second rollers of the guide tool holder structure abut against the upper and lower surfaces of the guide rail for guiding and sliding.

[0030] Optionally, the transmission tracks on both the upper and lower sides include: a rotating gear disk, which is rotatably set at one end of the conveying direction, and the rotating gear disk has multiple rotating teeth;

[0031] Steering guide plate, which is fixedly installed at the other end of the conveying direction;

[0032] Linear guides on both sides extend along the conveying direction and connect the rotating gear plate and the steering guide plate;

[0033] The linear guide extends from one end toward the rotating gear disk to the outer surface of the rotating gear disk to form the inlet and outlet ends;

[0034] An arc-shaped guide surface is provided on the inlet and outlet ends.

[0035] Thirdly, this application also proposes a machine tool including the chain-type tool magazine as described above.

[0036] The beneficial effects of the guide tool holder structure, chain tool magazine, and machine tool provided in this application are at least as follows: By installing a first roller and a second roller on the guide mounting position of the tool holder body, both the first roller and the second roller are rotatably mounted on the guide mounting position, allowing the tool holder body to roll during movement on the guide rail, thereby reducing friction and achieving stable movement. By sliding the first roller against the upper surface of the guide rail and the second roller against the lower surface of the guide rail, the first roller and the second roller clamp the guide rail between them. During the operation of the chain tool magazine, even if the tool holder body experiences vibration or shaking, the first roller and the second roller limit the guide rail in the vertical direction, ensuring that the tool holder body remains in close contact with the guide rail in the vertical direction. This prevents the tool holder body from being affected by vibration or shaking, allowing it to move stably along the guide rail with the tool. This avoids the problem of the rollers easily deviating from the guide rail when the chain becomes loose. Attached Figure Description

[0037] To more clearly illustrate the technical solutions in the embodiments of this application, 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 application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a partial structural diagram of a guide tool holder structure provided in an embodiment of this application during use;

[0039] Figure 2 A schematic diagram illustrating the connection between a guide tool holder structure and another guide tool holder structure, provided in an embodiment of this application.

[0040] Figure 3 An exploded view of a guide tool holder structure provided in an embodiment of this application;

[0041] Figure 4 This is a schematic diagram of a chain-type tool magazine provided in an embodiment of this application;

[0042] Figure 5 for Figure 4 Enlarged view of point A.

[0043] The following are the labeling elements in the figures:

[0044] 100. Guide tool holder structure; 110. Tool holder body; 111. Tool mounting position; 112. Guide mounting position; 113. Tool holder; 120. First roller; 121. First roller body; 122. First fastener; 130. Second roller; 131. Second roller body; 132. Second fastener; 140. Boss; 150. Chain hinge seat; 151. Upper connecting post; 152. Lower connecting post; 153. First hinge through hole; 154. Hinge rod; 155. 1. Anti-wear bushing; 160. Chain hinge block; 161. Second hinge through hole; 162. Second anti-wear bushing; 170. Rolling wheel; 171. Snap ring; 172. Washer; 200. Tool magazine transmission structure; 210. Transmission rail; 211. Rotating gear plate; 212. Steering guide plate; 213. Linear guide rail; 214. Inlet / outlet end; 215. Cutting edge; 216. Arc-shaped guide surface; 220. Guide rail; 230. Tool magazine motor; 300. Tool. Detailed Implementation

[0045] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0046] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly located on that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the accompanying drawings, and are for ease of description only, and should not be construed as limiting the technical solution. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality of" means two or more, unless otherwise explicitly defined.

[0047] Example 1

[0048] like Figure 1 , Figure 2 As shown, this embodiment proposes a guide tool holder structure 100, which is used to be installed on the guide rail 220 of the tool magazine transfer structure 200. The tool magazine transfer structure 200 has a conveying direction, and the guide tool holder structure 100 connects the tool 300 to move in the conveying direction. The guide tool holder structure 100 of this embodiment mainly includes: a tool holder body 110, a first roller 120, and a second roller 130. The tool holder body 110 includes a tool loading position 111 located on one side, and a guide mounting position 112 disposed opposite to the tool loading position 111. For ease of structural description, the side where the tool loading position 111 is located is the front side, and the side where the guide mounting position 112 is located is the rear side. The tool loading position 111 includes a tool holder 113, and the tool 300 is detachably connected to the tool holder 113. The tool holder 113 and the tool 300 are both prior art, and their structures are not described in detail. The tool holder 110 slides on the guide rail 220 via the first roller 120 and the second roller 130, thereby enabling the tool holder 113 to move stably on the guide rail 220. The first roller 120 is rotatably mounted on the guide mounting position 112 and rolls against the upper surface of the guide rail 220. The second roller 130 is rotatably mounted on the guide mounting position 112 and spaced below the first roller 120, rolling against the lower surface of the guide rail 220. The first roller 120 and the second roller 130 position the guide rail 220 between them in the vertical direction, providing more stable support for the sliding of the first roller 120 and the second roller 130 along the conveying direction.

[0049] like Figure 1 , Figure 2As shown, the guide tool holder structure 100 of this embodiment installs a first roller 120 and a second roller 130 on the guide mounting position 112 of the tool holder body 110, so that the first roller 120 and the second roller 130 are rotatably mounted on the guide mounting position 112, so that the tool holder body 110 can roll during the movement on the guide rail 220 to reduce friction and achieve stable movement. By sliding the first roller 120 against the upper surface of the guide rail 220 and the second roller 130 against the lower surface of the guide rail 220, the first roller 120 and the second roller 130 sandwich the guide rail 220 between them. During the operation of the chain-type tool magazine, even if the tool holder 110 experiences vibration or shaking, the first roller 120 and the second roller 130 limit the guide rail 220 in the vertical direction, so the tool holder 110 remains in close contact with the guide rail 220 in the vertical direction. This prevents it from being affected by vibration or shaking, allowing the tool holder 110, carrying the tool 300, to move stably along the guide rail 220. This avoids the problem of the rollers easily deviating from the guide rail 220 when the chain becomes loose.

[0050] like Figure 2 , Figure 3 As shown, further, the first roller 120 in this embodiment specifically includes a first wheel body 121 and a first fastener 122. The central shaft of the first wheel body 121 has a through hole, and the first fastener 122 passes through the through hole of the first wheel body 121 and is screwed onto the guide mounting position 112. The first wheel body 121 rotates on the first fastener 122. Specifically, one end of the first fastener 122 connecting to the first wheel body 121 is flush with the end face of the first wheel body 121. The first wheel body 121 is connected to the rear end of the tool holder body 110 through the first fastener 122 and can rotate. The first wheel body 121 can be a bearing, which has high surface wear resistance, thus allowing for stable long-term movement on the guide rail 220 without easy wear, ensuring structural stability.

[0051] like Figure 2 , Figure 3 As shown, the second roller 130 in this embodiment further includes a second wheel body 131 and a second fastener 132. The central shaft of the second wheel body 131 has a through hole, and the second fastener 132 passes through the through hole of the second wheel body 131 and is screwed onto the guide mounting position 112. The second wheel body 131 rotates on the second fastener 132. The second wheel body 131 is the same size as the first wheel body 121 and can also be a bearing. Since bearings can be purchased directly from the market, using standard parts can reduce production costs.

[0052] like Figure 3As shown, further, the guide mounting position 112 of this embodiment is provided with bosses 140 spaced apart along the vertical direction. Both the upper and lower bosses 140 have threaded holes, and the first fastener 122 and the second fastener 132 are respectively screwed into the threaded holes of the upper and lower bosses 140. Specifically, both the upper and lower bosses 140 protrude rearward from the rear surface of the tool holder body 110. This allows the first wheel body 121 and the second wheel body 131 to be pushed rearward, so that after the first wheel body 121 and the second wheel body 131 abut against the upper and lower surfaces of the guide rail 220, there is still sufficient clearance between the side of the guide rail 220 and the rear surface of the tool holder body 110, preventing the tool holder body 110 from colliding with the guide rail 220 due to back-and-forth vibration during movement.

[0053] like Figure 2 , Figure 3 As shown, in this embodiment, the left and right sides of the guide mounting position 112 are respectively provided with a chain hinge seat 150 and a chain hinge block 160. The chain hinge seat 150 and the chain hinge block 160 are mainly used to connect different tool holder bodies 110 sequentially to form a tool holder chain (chain structure). The chain hinge block 160 of one guide tool holder structure 100 is inserted into the chain hinge seat 150 of another guide tool holder structure 100, so that multiple guide tool holder structures 100 are hinged sequentially. By hinged multiple tool holder bodies 110 sequentially to form a tool holder chain (chain structure), there is no need to set up an additional chain, thus optimizing the structural design.

[0054] like Figure 2 , Figure 3 As shown, the chain hinge base 150 of this embodiment further includes: an upper connecting post 151 and a lower connecting post 152, a hinge rod 154, and a first anti-wear bushing 155. A first hinge through hole 153 is provided through both the upper connecting post 151 and the lower connecting post 152, forming a hinge space between them. The hinge rod 154 passes through the first hinge through hole 153 and is disposed on the upper connecting post 151 and the lower connecting post 152. A second hinge through hole 161 is provided through the chain hinge block 160. The chain hinge block 160 is inserted into the hinge space, aligning the first hinge through hole 153 and the second hinge through hole 161, thereby allowing the hinge rod 154 to pass through the upper first hinge through hole 153 into the second hinge through hole 161, and then into the lower first hinge through hole 153, thus achieving the hinge between the chain hinge base 150 and the chain hinge block 160.

[0055] The first anti-wear bushing 155 is disposed in the first hinge through hole 153 and sleeved on the hinge rod 154. By disposing of the first anti-wear bushing 155 in the first hinge through holes 153 of the upper connecting post 151 and the lower connecting post 152 on both sides, the hinge rod 154 only rubs against the first anti-wear bushing 155 during rotation. This increases the service life of the first anti-wear bushing 155 as it is less prone to wear, and also makes replacement easier even if it does wear out. A second anti-wear bushing 162 is disposed in the second hinge through hole 161 and sleeved on the hinge rod 154; similarly, the second anti-wear bushing 162 is also less prone to wear.

[0056] like Figure 1 , Figure 2 , Figure 3 As shown, further, in this embodiment, the upper and lower ends of the hinge rod 154 are respectively connected to the rolling wheels 170, and the rolling wheels 170 are rotatably connected to the hinge rod 154. The rolling wheels 170 at both ends are secured to the upper and lower ends of the hinge rod 154 by snap rings 171. The rolling wheels 170 can be bearings. The rolling wheels 170 at both ends are used to cooperate with the rotating gear disk 211 of the tool magazine transmission structure 200. The rotating gear disk 211 is equivalent to a sprocket, and a chain gap is formed between the rolling wheels 170 on two adjacent tool holder bodies 110. In this way, when the teeth of the rotating gear disk 211 engage between the rolling wheels 170 on two adjacent tool holder bodies 110, it can drive the tool holder chain (chain structure) formed by connecting the entire tool holder body 110 like a chain. The rolling wheels 170 can not only cooperate with the teeth of the rotating gear disk 211 (e.g., Figure 4 , Figure 5 (As shown), and it can rotate flexibly, reducing friction and wear. In addition, a gasket 172 is provided on the upper surface of the upper connecting post 151 and the lower surface of the lower connecting post 152, and the rolling wheel 170 abuts against the gasket 172 to achieve an anti-wear effect.

[0057] Example 2

[0058] like Figure 4 , Figure 5 As shown, this embodiment also proposes a chain-type tool magazine, mainly including: a tool magazine transmission structure 200, and multiple guide tool holder structures 100 as described above. The multiple guide tool holder structures 100 are hinged end to end to form a tool holder chain. The tool magazine transmission structure 200 includes: transmission rails 210 located on the upper and lower sides, and a guide rail 220 located in the middle. The transmission rails 210 are connected to a tool magazine motor 230, which provides power to the transmission rails 210. The tool holder chain is sleeved on the transmission rails 210 on the upper and lower sides and moves by being driven by the transmission rails 210 on the upper and lower sides; as shown... Figure 1As shown, the first roller 120 and the second roller 130 of the guide tool holder structure 100 abut against the upper and lower surfaces of the guide rail 220 respectively for guiding and sliding.

[0059] like Figure 4 , Figure 5 As shown, the transmission tracks 210 on both the upper and lower sides further include: a rotating gear disk 211, a steering guide disk 212, and linear guide rails 213 on both sides. The rotating gear disk 211 is rotatably mounted at one end of the conveying direction, and multiple rotating teeth are provided on the rotating gear disk 211. The conveying direction is the moving direction of the tool holder body 110 on the tool holder chain. The steering guide disk 212 is fixedly mounted at the other end of the conveying direction, and the linear guide rails 213 extend along the conveying direction and engage with the rotating gear disk 211 and the steering guide disk 212. The rotating gear 211 is connected to the tool magazine motor 230 and rotates under the drive of the tool magazine motor, similar to a drive sprocket, providing power to the tool holder chain. When the rolling wheel 170 in the vertical direction of the tool holder body 110 leaves the teeth of the rotating gear 211, it can move to the linear guide rail 213 and move along the linear guide rail 213, and then move to the steering guide plate 212. The rolling wheel 170 abuts against the side wall of the steering guide plate 212 and continues to move. After completing the steering, it moves to the linear guide rail 213 on the other side, and then moves to the rotating gear 211. It is pushed by the teeth of the rotating gear 211 to complete the cycle.

[0060] like Figure 5 As shown, the linear guide 213 extends towards the rotating gear 211 at one end to form an inlet / outlet end 214 on the outer surface of the rotating gear 211. An arc-shaped guide surface 216 is provided on the inlet / outlet end 214. In the specific structure, taking the upper rotating gear 211 as an example, the linear guide 213 has a notch 215 at the lower part of the front end, so that the rotating gear 211 rotates within the notch 215. The part of the linear guide 213 above the rotating gear 211 is the inlet / outlet end 214. By providing an arc-shaped guide surface 216 on the inlet / outlet end 214, when the teeth of the rotating gear 211 push the rolling wheel 170 to move, it can move to the arc-shaped guide surface 216 to guide the rolling wheel 170, so that the rolling wheel 170 smoothly transitions to the side of the linear guide 213, making the entire tool holder chain movement process smoother.

[0061] Example 3

[0062] This embodiment proposes a machine tool, including the chain-type tool magazine as described above. This allows for the formation of a CNC machining center.

[0063] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A guide tool holder structure for mounting on a guide rail of a tool magazine transfer structure, characterized in that, The guide tool holder structure includes: a tool holder body, the tool holder body including a tool mounting position located on one side, and a guide mounting position disposed opposite to the tool mounting position; The first roller is rotatably mounted on the guide mounting position and is used to roll against the upper surface of the guide rail; The second roller is rotatably mounted on the guide mounting position and spaced below the first roller. The second roller is used to roll against the lower surface of the guide rail.

2. The guide tool holder structure as described in claim 1, characterized in that, The first roller includes: The first wheel body has a through hole on its central shaft. A first fastener passes through a through hole in the first wheel body and is screwed onto the guide mounting position, and the first wheel body rotates on the first fastener.

3. The guide tool holder structure as described in claim 2, characterized in that, The second roller includes: The second wheel body has a through hole on its central axis; The second fastener passes through the through hole of the second wheel body and is screwed onto the guide mounting position, and the second wheel body rotates on the second fastener.

4. The guide tool holder structure as described in claim 3, characterized in that, The guide mounting position is provided with protrusions spaced apart along the vertical direction, and threaded holes are provided on both the upper and lower protrusions. The first fastener and the second fastener are respectively screwed into the threaded holes of the upper and lower bosses.

5. The guide tool holder structure as described in claim 1, characterized in that, A hinge seat and a hinge block are respectively provided on the left and right sides of the guide mounting position; One of the guide tool holder structures is inserted into the chain hinge seat of another guide tool holder structure, so that the multiple guide tool holder structures are hinged sequentially.

6. The guide tool holder structure as described in claim 5, characterized in that, The chain hinge base includes an upper connecting post and a lower connecting post, both of which are provided with a first hinge through hole, and a hinge space is formed between the upper connecting post and the lower connecting post. A hinge rod, which passes through the first hinge through hole and is disposed on the upper connecting post and the lower connecting post; The first wear-resistant bushing is disposed in the first hinge through hole and sleeved on the hinge rod; A second hinge through hole is provided on the chain hinge block, the chain hinge block is inserted into the hinge space, and the hinge rod passes through the second hinge through hole; A second anti-wear bushing is provided in the second hinge through hole and is sleeved on the hinge rod.

7. The guide tool holder structure as described in claim 6, characterized in that, The upper and lower ends of the hinge rod are respectively connected to the rolling wheel, and the rolling wheel is rotatably connected to the hinge rod.

8. A chain-type tool magazine, characterized in that, include: The tool magazine transport structure, and a plurality of guide tool holder structures as described in any one of claims 1-7, wherein the plurality of guide tool holder structures are hinged end to end to form a tool holder chain; The tool magazine transmission structure includes: transmission rails located on the upper and lower sides, and a guide rail located in the middle; The tool holder chain is sleeved on the upper and lower transmission rails and moves by being driven by the upper and lower transmission rails. The first roller and the second roller of the guide tool holder structure respectively abut against the upper and lower surfaces of the guide rail for guiding and sliding.

9. The chain-type tool magazine as described in claim 8, characterized in that, The transmission tracks on both the upper and lower sides each include: a rotating gear disk, which is rotatably disposed at one end of the conveying direction, and the rotating gear disk is provided with multiple rotating teeth; A steering guide disk, which is fixedly disposed at the other end of the conveying direction; Linear guide rails on both sides extend along the conveying direction and connect with the rotating gear disk and the steering guide disk; The linear guide rail extends from one end toward the rotating gear disk to the outer surface of the rotating gear disk to form an inlet / outlet end; An arc-shaped guide surface is provided on the inlet and outlet ends.

10. A machine tool, characterized in that, Includes the chain-type tool magazine as described in claim 9.

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