A split T-shaped block
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HIMILE MECHANICAL MFG
- Filing Date
- 2025-07-09
- Publication Date
- 2026-06-30
Smart Images
Figure CN224424968U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machining fixture technology, specifically to a split T-block. Background Technology
[0002] T-blocks mate with T-slots on machine tool worktables to clamp and secure equipment and parts on the worktable. Traditional T-blocks are integral structures. For narrow T-slots or long-stroke machine tools, T-blocks can only be installed by sliding them in from the end of the T-slot, making position adjustment inflexible and cumbersome. If T-blocks are already installed at both ends of a closed T-slot, the required T-blocks cannot be inserted into the T-slot between the two T-blocks. All previously installed T-blocks must be removed, and the required number of T-blocks must be reinstalled, wasting time and costs and impacting production. Summary of the Invention
[0003] To address the problems existing in the prior art, this utility model provides a split T-block, which is suitable for quick clamping of workpieces or tools. It can be installed and disassembled at any time as needed in the middle position of a closed T-slot with matching specifications, avoiding the problem that conventional T-blocks can only be inserted sequentially from the ends of the T-slot.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] This utility model provides a split T-block, including a first block, a second block, and a positioning bolt;
[0006] The first block and the second block are respectively a positive L-shape and an inverted L-shape. After sliding relative to each other along the length direction and coming close together, they form a T-shaped block.
[0007] The positioning bolts are used to lock the relative positions of the first and second blocks in the length direction after they are connected.
[0008] In the aforementioned split T-block, the positioning bolt includes a connecting part and a limiting part; one end of the connecting part is threadedly connected to the first block or the second block, and the other end is fixedly connected to the limiting part; the limiting part has a cross-section, and when the positioning bolt rotates, the limiting part can avoid the movement path when the first block and the second block are docked or block the movement path.
[0009] In the aforementioned split T-block, a limiting threaded hole is provided on the end face of the insertion end of the first block for engaging and connecting with the connecting part.
[0010] In the aforementioned split T-block, the outer end of the limiting threaded hole is connected to a countersunk hole, which includes a first countersunk hole portion and a second countersunk hole portion. The first countersunk hole portion is located on the end face of the insertion end of the first block, and the second countersunk hole portion is located on the end face of the rear end of the second block. The first countersunk hole portion and the second countersunk hole portion are joined together to form the countersunk hole.
[0011] In the aforementioned split-type T-block, the limiting threaded hole is coaxial with the countersunk hole;
[0012] And / or, the limiting threaded hole is located near the upper part of the first block;
[0013] And / or, the depth of the first countersunk hole is equal to or greater than the depth of the second countersunk hole.
[0014] In the aforementioned split T-block, the first block and the second block are respectively positioned at both ends by the positioning bolts;
[0015] And / or, the first guide bevel is machined on the edge of the first block parallel to the mating surface;
[0016] And / or, the second block has a second guide bevel machined on the edge parallel to the mating surface.
[0017] In the aforementioned split T-block, the mating surface of the first block is provided with a first limiting surface, which faces the insertion end of the first block; the mating surface of the second block is provided with a second limiting surface, which faces the insertion end of the second block.
[0018] After the first limiting surface and the second limiting surface are in contact, they cooperate with and are positioned by the positioning bolt provided at the insertion end of the first block.
[0019] In the aforementioned split T-block, the first limiting surface and the second limiting surface are parallel, and the angle between them and the mating surface is 10°-45°.
[0020] And / or, the first limiting surface and the second limiting surface that cooperate with each other form a limiting surface group, and two limiting surface groups are provided on the mating surface of the first block and the second block, respectively located at both ends of the length direction of the mating surface.
[0021] In the aforementioned split T-block, the first block has a first threaded portion on its mating surface, and the second block has a second threaded portion on its mating surface. The first threaded portion and the second threaded portion are mated to form an external threaded hole.
[0022] In the aforementioned split T-block, the centerline of the external threaded hole coincides with the mating surface of the first block and the second block.
[0023] The beneficial effects of this utility model are as follows:
[0024] 1. The split T-block is composed of a first block and a second block, which are respectively a positive L-shape and a negative L-shape. They can be inserted individually from the middle of the T-slot, and then the first block and the second block are joined together in the T-slot. The first block and the second block are locked together using positioning bolts. When installing a workpiece, if it is found that the number of pre-placed T-blocks is insufficient, the split T-blocks can be directly placed into the T-slots for use. This is convenient and avoids the phenomenon of removing and reinstalling the original T-blocks, saving clamping time.
[0025] 2. Split T-blocks can be added between installed workpieces at any time to add temporary production tasks, avoiding the situation of unloading installed but incomplete workpieces.
[0026] 3. The positioning bolt locking operation is simple. After the positions of the first block and the second block are locked, the performance is stable.
[0027] 4. The edges of the first and second blocks parallel to the mating surfaces are machined with guide bevels to increase the passability of the first and second blocks when installed from the middle of the T-slot, and to avoid interference or damage to the T-slot.
[0028] 5. The first and second limiting surfaces are parallel, and the angle between them and the mating surface ensures that the cooperation between the first and second limiting surfaces not only locks the positions of the first and second blocks in the length direction, but also limits and locks them in the width direction; the application of multiple limiting surface groups makes the assembly structure of the first and second blocks more stable.
[0029] 6. External threaded holes are used to connect parts or tooling, making them highly versatile and easy to assemble. Attached Figure Description
[0030] Figure 1 This is a structural diagram of the assembled T-block of this utility model;
[0031] Figure 2 This is an exploded view of the split T-block of this utility model;
[0032] Figure 3 This is a three-dimensional structural diagram of the positioning bolt in the split T-type of this utility model;
[0033] Figure 4 This is a three-dimensional structural diagram of the second block in the split T-shaped structure of this utility model;
[0034] Figure 5 This is a structural schematic diagram of the first block from a first-view perspective in the split T-shaped structure of this utility model;
[0035] Figure 6 This is a structural schematic diagram of the first block from a second perspective in the split T-shaped structure of this utility model;
[0036] Figure 7 This is a schematic diagram showing the usage state of the split T-shaped block of this utility model.
[0037] In the picture:
[0038] 100 - First block; 110 - First front step surface; 120 - First rear step surface; 130 - First threaded part; 140 - First limiting surface; 150 - First countersunk part; 160 - Limiting threaded hole; 170 - First guide angle;
[0039] 200 - Second block; 210 - Second rear step surface; 220 - Second front step surface; 230 - Second threaded portion; 240 - Second countersunk portion; 250 - Second limiting surface; 260 - Second guide angle;
[0040] 300 - Positioning bolt; 310 - Connecting part; 320 - Limiting part; 330 - Cut surface;
[0041] 400 - External threaded hole; 500 - T-slot. Detailed Implementation
[0042] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.
[0043] Please refer to Figure 1 , Figure 2 and Figure 7 This invention provides an embodiment of a split T-block, comprising a first block 100, a second block 200, and a positioning bolt 300. The split design allows the first block 100 and the second block 200 to be inserted into the T-slot 500 at any position within the T-slot 500 without reducing the contact area between the T-block and the T-slot 500, thus preventing damage to the T-slot 500 during use. Specifically, the first block 100 and the second block 200 are respectively a positive L-shape and a negative L-shape. They slide relative to each other along their length and come close together to form a T-block. When the first block 100 and the second block 200 approach each other, the end that contacts first is the insertion end, and the end opposite the insertion end is the rear end. The positioning bolt 300 is used to lock the relative position of the first block 100 and the second block 200 along their length.
[0044] like Figure 3As shown, the positioning bolt 300 includes a connecting portion 310 and a limiting portion 320. The connecting portion 310 is a cylinder with external threads. One end of the connecting portion 310 is threadedly connected to the first block 100 or the second block 200, and the other end is fixedly connected to the limiting portion 310. The limiting portion 320 rotates synchronously with the connecting portion 310. The limiting portion 320 has a cross-section 330. When the positioning bolt 300 rotates, the limiting portion 320 is on one side of the mating surface, so that the limiting portion 320 avoids the movement path of the first block 100 or the second block 200 during mating. When it is necessary to lock the first block 100 or the second block 200, the positioning bolt 300 is rotated so that the limiting portion 320 blocks the movement path.
[0045] For example, the first block 100 has a limiting threaded hole 160 on its insertion end face, and the connecting part 310 is screwed into and connected to the limiting threaded hole 160. When the positioning bolt 300 is rotated until the cutting surface 330 is parallel to and close to the mating surface of the first block 100, the limiting part 320 avoids the movement path of the second block 200 during mating. If the positioning bolt 300 is rotated further, the limiting part 320 partially blocks the movement path of the second block 200 during mating, hindering the movement of the second block 200. When the cutting surface 330 is again parallel to and away from the mating surface of the first block 100, the contact area between the limiting part 320 and the second block 200 is maximized, achieving the best limiting effect. It can be understood that the positioning bolt 300 can also be threadedly connected to the insertion end of the second block 200.
[0046] Furthermore, such as Figure 1-6 As shown, the outer end of the limiting threaded hole 160 is connected to a countersunk hole, which is distributed on the end face of the first block 100 and the second block 200 at the same end, for accommodating the limiting portion 320 of the positioning bolt 300. For example, the first block 100 has a first countersunk portion 150, and the second block 200 has a second countersunk portion 240. The first countersunk portion 150 and the second countersunk portion 240 are joined to form a countersunk hole coaxial with the limiting threaded hole 160. The diameter of the countersunk hole needs to be designed to match the outer diameter of the limiting portion 320, and the depth of the first countersunk portion 150 is equal to or greater than the depth of the second countersunk portion 240, ensuring that the limiting portion 320 is simultaneously limited at the same end of the first block 100 and the second block 200.
[0047] The limiting threaded hole 160 is located near the upper part of the first block 100 or the second block 200 (near the opening of the T-slot 500) to facilitate tightening of the fixing bolt 300 during use.
[0048] The docking operation of the first block 100 and the second block 200 has two degrees of freedom in the length direction; depending on the needs, the split T-block can be equipped with two positioning bolts 300, which are respectively blocked at the insertion end and the rear end of the first block 100 and the second block 200. After the first block 100 and the second block 200 are docked, two tightening operations are required. Preferably, the mating surfaces of the first block 100 and the second block 200 are respectively provided with a first limiting surface 140 and a second limiting surface 250. The first limiting surface 140 and the second limiting surface 250 face opposite directions, with the first limiting surface 140 facing the insertion end of the first block 100 and the second limiting surface 250 facing the insertion end of the second block 200. After the first limiting surface 140 and the second limiting surface 250 are engaged and mated, one degree of freedom in the length direction of the first block 100 and the second block 200 can be limited. With the help of a positioning bolt 300 provided at the insertion end of the first block 100 or the second block 200, both degrees of freedom in the length direction can be limited.
[0049] The first limiting surface 140 and the second limiting surface 250 extend in the height direction. Correspondingly, the docking surface of the first block 100 is divided by the first limiting surface 140 into a stepped first rear step surface 120 and a first front step surface 110. The first rear step surface 120 and the first front step surface 110 are parallel to the docking path, i.e., in the length direction. Similarly, the second limiting surface 250 divides the docking surface of the second block 200 into a second rear step surface 210 and a second front step surface 220.
[0050] The first limiting surface 140 and the second limiting surface 250 can be planes, perpendicular to the mating surface; in other words, the first limiting surface 140 is perpendicular to the first rear step surface 120 and the first front step surface 110; the second limiting surface 250 is perpendicular to the second rear step surface 210 and the second front step surface 220. The first limiting surface 140 and the second limiting surface 250 can also be a concave and a convex arc surface or any form of surface or combination of surfaces, as long as they satisfy the requirement that when the first block 100 and the second block 200 are mated, the first limiting surface 140 and the second limiting surface 250 cooperate to limit one degree of freedom in the length direction of the first block 100 and the second block 200.
[0051] Alternatively, the first limiting surface 140 and the second limiting surface 250 are not perpendicular to the docking path and have an inclination angle of less than 90° with the docking surface; the inclination angle between the first limiting surface 140 and the docking surface is the same as the inclination angle between the second limiting surface 250 and the docking surface, and the inclination angle is 10°-45°, preferably 30°; the first rear step surface 120 and the first front step surface 110 form a first wedge-shaped protrusion and a first slot, and the second limiting surface 250, the second rear step surface 210, and the second front step surface 220 form a second wedge-shaped protrusion and a second slot; after the first block 100 and the second block 200 are docked, the first wedge-shaped protrusion is inserted into the second slot, and the second wedge-shaped protrusion is inserted into the first slot, which can not only limit the length direction of the first block 100 and the second block 200, but also limit the width direction, so as to stably connect the first block 100 and the second block 200.
[0052] The first limiting surface 140 and the second limiting surface 250, which cooperate with each other, form a limiting surface group. Two or more limiting surface groups can be provided on the mating surfaces of the first block 100 and the second block 200 as needed. For example, please refer to... Figure 1 , Figure 2 The mating surface is provided with two sets of limiting surfaces, which are located at both ends of the length of the mating surface. For example, the distance between the limiting surface set and the adjacent end face is 1 / 6 of the length of the mating surface. Among the multiple sets of limiting surfaces, several first limiting surfaces 140 are preferably parallel; several second limiting surfaces 250 are preferably parallel.
[0053] The mating surface of the first block 100 is provided with a first threaded portion 130, and the mating surface of the second block 200 is provided with a second threaded portion 230. The first threaded portion 130 and the second threaded portion 230 are mated to form an external threaded hole 400. The center line of the external threaded hole 400 coincides with the mating surface of the first block 100 and the second block 200.
[0054] The first block 100 and the second block 200 can be designed as conventional T-blocks or heightened T-blocks according to the dimensions of the standard T-slot 500. The first block 100 is machined with a first guide angle of 170 on the edge parallel to the mating surface, and the second block 200 is machined with a second guide angle of 260 on the edge parallel to the mating surface, so as to facilitate smooth sliding into the assembly position during assembly.
[0055] When machining the split T-block, the first block 100 and the second block 200 are machined separately to complete the machining of the limiting threaded hole 160, the first countersunk hole 150, the second countersunk hole 240 and the mating surface.
[0056] The processed first block 100 and second block 200 are combined together, and the first threaded part 130 and the second threaded part 230 are machined to ensure that the first block 100 and the second block 200 have complete threads after mating; the two parts are matched and marked.
[0057] In use, first assemble the first block 100 with the positioning bolt 300. Do not tighten the positioning bolt 300 completely; leave a certain amount of rotation. Rotate the cut surface 330 of the positioning bolt 300 to the mating surface of the first block 100, close to the mating surface and parallel to it. Please refer to... Figure 7 The document shows different states of the process, including the placement of the first block 100 and the second block 200 into the T-slot 500 and their docking; including:
[0058] Place the combination of the first block 100 and the positioning bolt 300 into the T-slot 500 of the worktable, and then place the second block 200 on the side of the first block 100 where the positioning bolt 300 is installed, adjacent to it; refer to the placement state of the first block 100 and the second block 200 in the first T-slot 510.
[0059] The first block 100 and the second block 200 are respectively placed on both sides of the T-slot 500; the state of the first block 100 and the second block 200 in the second T-slot 520 can be referred to.
[0060] Push the second block 200 along the moving path (T-slot 500) during docking until the first limiting surface 140 and the second limiting surface 250 fit together and docking is in place; refer to the state of the first block 100 and the second block 200 in the third T-slot 530.
[0061] Tighten the positioning bolt 300 to ensure that the limiting part 320 presses against the second block 200. With the cooperation of the first limiting surface 140 and the second limiting surface 250 and the limiting of the positioning bolt 300, the relative position of the first block 100 and the second block 200 in the length direction is limited, and they can be used normally.
[0062] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A split T-shaped block, characterized in that, Includes a first block (100), a second block (200), and a positioning bolt (300); The first block (100) and the second block (200) are respectively a positive L-shape and an inverted L-shape. After sliding relative to each other along the length direction and coming close together, they form a T-shaped block. The positioning bolt (300) is used to lock the relative positions of the first block (100) and the second block (200) in the length direction after docking.
2. A split T-shaped block according to claim 1, characterized in that, The positioning bolt (300) includes a connecting part (310) and a limiting part (320); one end of the connecting part (310) is threadedly connected to the first block (100) or the second block (200), and the other end is fixedly connected to the limiting part (320); the limiting part (320) has a cut surface (330), and when the positioning bolt (300) rotates, the limiting part (320) can avoid the movement path when the first block (100) and the second block (200) are docked or block the movement path.
3. A split T-shaped block according to claim 2, characterized in that, The first block (100) has a limiting threaded hole (160) on the end face of the insertion end for engaging and connecting with the connecting part (310).
4. A split T-shaped block according to claim 3, characterized in that, The outer end of the limiting threaded hole (160) is connected to a countersunk hole, which includes a first countersunk hole portion (150) and a second countersunk hole portion (240). The first countersunk hole portion (150) is located on the end face of the insertion end of the first block (100), and the second countersunk hole portion (240) is located on the end face of the rear end of the second block (200). The first countersunk hole portion (150) and the second countersunk hole portion (240) are connected to form the countersunk hole.
5. A split T-shaped block according to claim 4, characterized in that, The limiting threaded hole (160) is coaxial with the countersunk hole; And / or, the limiting threaded hole (160) is located near the upper part of the first block (100); And / or, the depth of the first countersunk portion (150) is equal to or greater than the depth of the second countersunk portion (240).
6. A split T-shaped block according to claim 1, characterized in that, The first block (100) and the second block (200) are respectively limited at both ends by the positioning bolts (300); And / or, the first block (100) has a first guide angle (170) machined on the edge parallel to the mating surface. And / or, the second block (200) has a second guide angle (260) machined on the edge of the mating surface parallel to the mating surface.
7. A split T-shaped block according to claim 1, characterized in that, The first block (100) has a first limiting surface (140) on its mating surface, and the first limiting surface (140) faces the insertion end of the first block (100); the second block (200) has a second limiting surface (250) on its mating surface, and the second limiting surface (250) faces the insertion end of the second block (200); After the first limiting surface (140) and the second limiting surface (250) are aligned, they cooperate with and are positioned by the positioning bolt (300) located at the insertion end of the first block (100).
8. A split T-shaped block according to claim 7, characterized in that, The first limiting surface (140) and the second limiting surface (250) are parallel, and the angle between them and the mating surface is 10°-45°. And / or, the first limiting surface (140) and the second limiting surface (250) that cooperate with each other form a limiting surface group. Two limiting surface groups are provided on the mating surfaces of the first block (100) and the second block (200), respectively located at both ends of the length direction of the mating surface.
9. A split T-shaped block according to claim 1, characterized in that, The first block (100) has a first threaded part (130) on its mating surface, and the second block (200) has a second threaded part (230) on its mating surface. The first threaded part (130) and the second threaded part (230) are mated to form an external threaded hole (400).
10. A split T-shaped block according to claim 9, characterized in that, The centerline of the external threaded hole (400) coincides with the mating surfaces of the first block (100) and the second block (200).