Machine tool chuck positioning device
By adding a positioning frame and positioning mechanism to the machine tool chuck, and utilizing the tight fit of the limit groove and nut column and bolt connection, the limitation problem of the machine tool chuck during high-speed rotation is solved, thereby improving machining accuracy and safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- YANTAI ZHONGHE MASCH TOOL ACCESSORIES CO LTD
- Filing Date
- 2025-06-09
- Publication Date
- 2026-05-12
AI Technical Summary
Existing machine tool chucks lack effective limit control when rotating at high speeds, which may cause relative slippage between the fixed plate and the machine tool chuck, reducing machining accuracy and causing safety hazards.
The system employs a positioning frame and positioning mechanism, with the limiting block in the limiting groove and the nut column closely engaging to form a stable limiting structure. A reliable connection system is constructed through bolt holes and bolt rods to ensure a stable connection between components.
It achieves precise limit control when the machine tool is rotating at high speed, improves machining accuracy and eliminates safety hazards, and ensures that the chuck body remains stable during operation.
Smart Images

Figure CN224223596U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of machine tool chuck positioning technology, and in particular to a machine tool chuck positioning device. Background Technology
[0002] In the grinding and polishing process, the feeding of grinding, polishing, or abrasive materials is indispensable, and the chuck plays a crucial role in this process. As a precision conveying and control component, the chuck has a precise flow regulation function, which can accurately control the feed amount of grinding, polishing, or abrasive materials at different processing stages according to the requirements of the processing technology. Whether it is the roughing stage that requires a large amount of processing aid to quickly remove material, or the finishing stage that requires a small and stable feed to achieve high-precision surface treatment, the chuck can accurately adapt. At the same time, the chuck's conveying method is very stable, which can ensure that the processing aid is evenly distributed in the contact area between the workpiece and the grinding wheel, avoiding surface quality problems such as scratches and inconsistent roughness caused by uneven distribution of processing aid.
[0003] Patent publication number CN219852182U discloses a "positioning device for a machine tool chuck," comprising a machine tool chuck with a fixed plate mounted on one side. Both the fixed plate and the machine tool chuck have multiple threaded holes, with the same bolt threaded into every two threaded holes. An annular ring is fitted around the outside of the machine tool chuck, and three protrusions are fixedly connected to the annular ring. This positioning device for a machine tool chuck, by setting up an annular ring, a fixing bolt, a locking strip, and a locking block, allows the protrusions to align with the bolt position when the annular ring is rotated. Simultaneously, the locking strip shifts and engages with the back of the locking block. Then, rotating the fixing bolt into the threaded hole, the locking strip and locking block engage, and the protrusions engage with the machine tool chuck, thus maintaining the fixed plate and the machine tool chuck on both sides. This improves connection stability and reduces the risk of connection failure due to bolt loosening.
[0004] The device in the aforementioned patent connects the fixed plate and the machine tool chuck by inserting bolts into threaded holes. Since the bolt holes are located on the surface of the machine tool chuck, if there is no effective limit control at the contact point between the fixed plate and the machine tool chuck, relative slippage may occur between the fixed plate and the machine tool chuck under the action of the large centrifugal force generated by the high-speed rotation of the machine tool. This will not only reduce the machining accuracy but may also cause safety hazards. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] To address the problems existing in the prior art, this utility model provides a machine tool chuck positioning device.
[0007] (II) Technical Solution
[0008] To achieve the above objectives, this utility model is implemented through the following technical solution: a machine tool chuck positioning device, including a positioning outer frame, wherein a positioning mechanism is provided on one side of the positioning outer frame;
[0009] The positioning mechanism includes a positioning disk and a limiting groove. The limiting groove is respectively opened on the front surface of the positioning disk and extends through the inside. A limiting block and a nut column are respectively placed inside the limiting groove. The rear surface of the positioning disk is respectively opened with a first bolt hole that extends through the inside and the inner wall of one end of the limiting groove. A bolt rod is screwed between the first bolt hole and the inner wall of the nut column.
[0010] By adopting the above technical solution, the limiting blocks and nut columns, which are respectively placed in the limiting groove, closely cooperate to form a stable limiting structure, thereby effectively achieving a precise limiting control effect. Then, the bolt rods that are screwed to the inner wall of the first bolt hole and the inner wall of the nut column form a reliable connection system, effectively ensuring a stable connection between components. This solves the problem that if there is no effective limiting control at the contact point between the fixed plate and the machine tool chuck, relative slippage may occur between the fixed plate and the machine tool chuck under the action of the large centrifugal force generated by the high-speed rotation of the machine tool. This would not only reduce the machining accuracy but also potentially cause safety hazards.
[0011] In a preferred embodiment of the machine tool chuck positioning device of the present invention, one end of the limiting block and one end of the nut column of the positioning mechanism are respectively fixedly installed on the rear end surface of the positioning frame.
[0012] By adopting the above technical solution, the positioning frame can effectively provide a stable installation position for the limiting blocks and nut columns installed on the rear surface.
[0013] In a preferred embodiment of the machine tool chuck positioning device of the present invention, the chuck body is placed between the inner walls of the positioning outer frame.
[0014] By adopting the above technical solution, the positioning frame can effectively provide a stable placement space for the chuck body placed between the inner walls.
[0015] In a preferred embodiment of the machine tool chuck positioning device of the present invention, detachable control blocks are fixedly installed on the outer side of the positioning frame, and the inner side of the control blocks is respectively locked onto the outer side of the front end of the chuck body.
[0016] By adopting the above technical solution, the control blocks, which are detachable and installed on the outside of the positioning frame, can be precisely engaged with the front side of the chuck body. Through the tightly fitting structure, the chuck body is provided with stable and reliable locking and releasing control, ensuring that the chuck body remains stable during operation.
[0017] In a preferred embodiment of the machine tool chuck positioning device of the present invention, a chuck block is fixedly installed on the outer side of the positioning frame, and a chuck head is fixedly installed on the outer side of the positioning disk of the positioning mechanism, with one end of the chuck block respectively locked onto the outer side of the chuck head.
[0018] By adopting the above technical solution, rotating the positioning outer frame can effectively drive the outer mounting blocks to rotate, and one end of the rotating block can be locked onto the outer side of the mounting head installed on the outer side of the positioning disk, thereby strengthening the connection between the positioning outer frame and the positioning disk.
[0019] In a preferred embodiment of the machine tool chuck positioning device of the present invention, the rear end surface of the positioning disk of the positioning mechanism is provided with a second bolt hole that penetrates the interior.
[0020] By adopting the above technical solution, and by opening second bolt holes through the interior on the rear surface of the positioning plate, it can be effectively connected to the machine tool connection end.
[0021] (III) Beneficial Effects
[0022] This utility model provides a machine tool chuck positioning device. It has the following beneficial effects:
[0023] 1. By adding a positioning mechanism, the limiting blocks and nut columns, which are respectively locked in the limiting groove, closely cooperate to form a stable limiting structure, thereby effectively achieving a precise limiting control effect. Then, the bolt rods screwed to the inner wall of the first bolt hole and the inner wall of the nut column form a reliable connection system, effectively ensuring a stable connection between components. This solves the problem that if there is no effective limiting control at the contact point between the fixed plate and the machine tool chuck, relative slippage may occur between the fixed plate and the machine tool chuck under the action of the large centrifugal force generated by the high-speed rotation of the machine tool. This would not only reduce machining accuracy but also potentially cause safety hazards.
[0024] 2. By adding control blocks, which are detachable and installed on the outside of the positioning frame, the control blocks can be precisely engaged with the front side of the chuck body. Through the tightly fitting structure, the control blocks provide stable and reliable locking and releasing control for the chuck body, ensuring that the chuck body remains stable during operation. Attached Figure Description
[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0026] Figure 1This is a schematic diagram of the overall structure of this utility model.
[0027] Figure 2 This is a front view structural diagram of the entire utility model.
[0028] Figure 3 This is a right-side half-sectional view of the overall structure of this utility model.
[0029] Figure 4 This is an enlarged structural diagram of point A of the entire utility model.
[0030] In the figure, 1. Positioning outer frame; 2. Chuck body; 3. Control block; 4. Positioning mechanism; 41. Positioning plate; 42. Limiting groove; 43. Limiting block; 44. Nut column; 45. Bolt rod; 46. First bolt hole; 5. Clamping block; 6. Clamping head; 7. Second bolt hole. Detailed Implementation
[0031] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0032] Example 1
[0033] Reference Figures 1 to 4 This is the first embodiment of the present utility model. This embodiment provides a machine tool chuck positioning device including a positioning frame 1, and a positioning mechanism 4 is provided on one side of the positioning frame 1.
[0034] The positioning mechanism 4 includes a positioning disk 41 and a limiting groove 42. The limiting groove 42 is respectively opened on the front surface of the positioning disk 41 and extends through the interior. A limiting block 43 and a nut post 44 are respectively placed inside the limiting groove 42. The rear surface of the positioning disk 41 is respectively opened with a first bolt hole 46 that extends through the interior and one end of the inner wall of the limiting groove 42. A bolt rod 45 is screwed between the first bolt hole 46 and the inner wall of the nut post 44.
[0035] Specifically, one end of the limiting block 43 of the positioning mechanism 4 and one end of the nut column 44 are respectively fixedly installed on the rear end surface of the positioning outer frame 1.
[0036] Furthermore, the positioning mechanism 4 forms a stable limiting structure by the limiting blocks 43 that are respectively locked in the limiting groove 42 and the nut column 44, thereby effectively achieving a precise limiting control effect. Then, a reliable connection system is constructed by the bolt rod 45 that is screwed to the inner wall of the first bolt hole 46 and the inner wall of the nut column 44, which effectively ensures the stable connection between the components. The limiting groove 42 is respectively opened on the front surface of the positioning plate 41 and penetrates through the interior.
[0037] Example 2
[0038] Reference Figures 1 to 4This is the first embodiment of the present utility model. This embodiment is based on the previous embodiment. A chuck body 2 is placed between the inner walls of the positioning outer frame 1. A detachable control block 3 is fixedly installed on the outer side of the positioning outer frame 1. The inner side of the control block 3 is respectively locked on the outer side of the front end of the chuck body 2.
[0039] Specifically, a locking block 5 is fixedly installed on the outer side of the positioning frame 1, and a locking head 6 is fixedly installed on the outer side of the positioning disk 41 of the positioning mechanism 4. One end of the locking block 5 is locked on the outer side of the locking head 6, and a second bolt hole 7 penetrating the interior is opened on the rear surface of the positioning disk 41 of the positioning mechanism 4.
[0040] Furthermore, the positioning frame 1 can effectively provide a stable placement space for the chuck body 2 placed between the inner walls. By installing detachable control blocks 3 on the outside of the positioning frame 1, the control blocks 3 can be precisely engaged with the front side of the chuck body 2. Through the tightly fitting structure, it provides stable and reliable locking and releasing control for the chuck body 2, ensuring that the chuck body 2 remains stable during operation.
[0041] Rotating the positioning outer frame 1 can effectively drive the outer mounting blocks 5 to rotate. One end of the rotating mounting block 5 can be locked onto the outer side of the mounting head 6 installed on the outer side of the positioning disk 41, thereby strengthening the connection between the positioning outer frame 1 and the positioning disk 41.
[0042] By opening second bolt holes 7 through the interior on the rear surface of the positioning plate 41, it can be effectively connected to the machine tool connection end.
[0043] Working principle: The positioning frame 1 can effectively provide a stable placement space for the chuck body 2 placed between the inner walls. Through the detachable control blocks 3 installed on the outside of the positioning frame 1, the control blocks 3 can be precisely engaged with the front side of the chuck body 2. Through the tightly fitting structure, it provides stable and reliable locking and releasing control for the chuck body 2, ensuring that the chuck body 2 remains stable during operation.
[0044] Rotating the positioning outer frame 1 can effectively drive the outer mounting blocks 5 to rotate. One end of the rotating mounting block 5 can be locked onto the outer side of the mounting head 6 installed on the outer side of the positioning disk 41, thereby strengthening the connection between the positioning outer frame 1 and the positioning disk 41.
[0045] By opening second bolt holes 7 through the interior on the rear surface of the positioning plate 41, it can be effectively connected to the machine tool connection end.
[0046] The positioning mechanism 4 forms a stable limiting structure by the limiting blocks 43 that are respectively locked in the limiting groove 42 and the nut column 44. This effectively achieves a precise limiting control effect. The bolt rod 45, which is screwed to the inner wall of the first bolt hole 46 and the inner wall of the nut column 44, forms a reliable connection system, which effectively ensures a stable connection between the components. The limiting grooves 42 are respectively opened on the front surface of the positioning plate 41 and penetrate through the interior.
[0047] It should be noted that in this paper, relational terms such as first and second are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations.
Claims
1. A machine tool chuck positioning device, comprising a positioning outer frame (1), characterized in that: A positioning mechanism (4) is provided on one side of the positioning frame (1); The positioning mechanism (4) includes a positioning disk (41) and a limiting groove (42). The limiting groove (42) is respectively opened on the front surface of the positioning disk (41) and extends through the interior. A limiting block (43) and a nut post (44) are respectively placed inside the limiting groove (42). The rear surface of the positioning disk (41) is respectively provided with a first bolt hole (46) that extends through the interior and one end of the inner wall of the limiting groove (42). A bolt rod (45) is screwed between the first bolt hole (46) and the inner wall of the nut post (44).
2. The machine tool chuck positioning device according to claim 1, characterized in that: The positioning mechanism (4) has one end of the limiting block (43) and one end of the nut column (44) fixedly installed on the rear end surface of the positioning frame (1).
3. The machine tool chuck positioning device according to claim 2, characterized in that: A chuck body (2) is placed between the inner walls of the positioning frame (1).
4. A machine tool chuck positioning device according to claim 2, characterized in that: The outer side of the positioning frame (1) is fixedly installed with a detachable control block (3), and the inner side of the control block (3) is respectively locked on the outer side of the front end of the chuck body (2).
5. A machine tool chuck positioning device according to claim 1, characterized in that: The outer side of the positioning frame (1) is fixedly installed with a card block (5), and the outer side of the positioning disk (41) of the positioning mechanism (4) is fixedly installed with a card head (6). One end of the card block (5) is respectively placed on the outer side of the card head (6).
6. A machine tool chuck positioning device according to claim 1, characterized in that: The positioning mechanism (4) has a second bolt hole (7) that penetrates the interior on the rear surface of the positioning disk (41).