Clamp for numerical control machine tool
By designing a CNC machine tool fixture including clamping assembly and stable assembly, the problems of unsolid clamping and skewed workpieces in the prior art are solved, and stable clamping and high-precision processing of workpieces of different shapes are achieved.
Patent Information
- Application Number
- CN202421319198.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-11
AI Technical Summary
Existing CNC machine tool clamps are prone to the problem of unstable clamping when clamping workpieces of different shapes, resulting in the workpiece being easily skewed during processing, affecting the processing accuracy.
A fixture is designed including a fixture seat, a clamp assembly and a stabilization assembly. The clamping assembly achieves stable clamping of the workpiece through the coordination of the screw, bevel gear and connecting rod; the clamping assembly achieves stable clamping of the workpiece through the coordination of the rack and movable plate to avoid the rotation of the gear and improve the stability of clamping.
This fixture can effectively clamp and fix workpieces of different shapes, avoid the problem of unstable clamping, ensure that the workpiece does not skew during processing, and improve processing accuracy.
Smart Images
Figure CN222588903U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of CNC machine tool fixtures, in particular to a fixture used for CNC machine tools. Background Art
[0002] CNC machine tool is the abbreviation of digital control machine tool. It is an automated machine tool equipped with a program control system. The control system can logically process programs specified by control codes or other symbolic instructions, decode them, express them in coded numbers, and input them into the CNC device through information carriers. At present, the clamps of CNC machine tools still use screws to drive the clamping plates to move and clamp the workpieces. Two groups of clamping plates are set to clamp the workpieces. However, when clamping and fixing objects of different shapes, the problem of loose clamping is prone to occur. When processing the workpiece, the workpiece is prone to skew, affecting the processing accuracy. Therefore, we propose a clamp for CNC machine tools. Utility Model Content
[0003] The purpose of the utility model is to provide a clamp for a numerically controlled machine tool to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a fixture for a CNC machine tool comprises a fixture seat, a placement opening is provided on the right side wall of the fixture seat, a cavity is provided in the fixture seat, a clamping assembly is provided in the cavity, the clamping assembly comprises a screw rod 1 provided in the cavity, the two ends of the screw rod 1 are respectively connected to the bearings provided on the left and right side walls in the cavity, a driven bevel gear is sleeved and installed on the outer wall of the screw rod 1, an active bevel gear meshing with the driven bevel gear is provided in the cavity, a rotating shaft is provided on the top of the active bevel gear, one end of the rotating shaft passes through the top of the cavity and is connected to the gear provided on the outside, a handle is provided on the top of the gear, a stable assembly meshing with the gear is provided on the outer side wall of the fixture seat, a sliding plate is sleeved on the outer wall of the screw rod 1, three groups of connecting rods are hingedly provided on the right side wall of the sliding plate, three groups of sliding grooves are provided on the right side wall of the fixture seat, clamping blocks are slidably connected in the three groups of sliding grooves, and one end of the three groups of connecting rods are respectively hinged to the left side walls of the three groups of clamping blocks.
[0005] Furthermore, the stabilizing component includes a sleeve provided on the outer wall of the clamp seat, a movable plate is slidably connected inside the sleeve, a movable rod is provided on the left side wall of the movable plate, one end of the movable rod passes through the left side wall inside the sleeve and is connected to a rack provided on the outside, the rack is meshed with the gear, and a screw rod 2 is provided on the right side wall of the movable plate, one end of the screw rod 2 passes through the right side wall inside the sleeve and is connected to a rotating plate provided on the outside.
[0006] Furthermore, the upper and lower side walls inside the sleeve are both provided with limit grooves, and the upper and lower side walls of the movable plate are both provided with limit blocks matching the limit grooves.
[0007] Furthermore, guide grooves are provided on the upper and lower side walls in the cavity, and guide blocks matching the guide grooves are provided on the upper and lower side walls of the sliding plate.
[0008] Furthermore, the left side walls of the three groups of slide grooves are all provided with movable grooves, and the connecting rods are slidably connected in the movable grooves.
[0009] Furthermore, the slide groove is communicated with the placement opening.
[0010] Compared with the prior art, the utility model has the following beneficial effects: the utility model can clamp and fix workpieces of different shapes under the action of the clamping component without the problem of loose clamping; the gear can be positioned under the action of the stabilizing component to prevent it from rotating and affecting the stability of the clamping and fixing of the workpiece, so that the workpiece will not be skewed when being processed, thereby improving the processing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the structure of the utility model;
[0012] Figure 2 This is a schematic diagram of the internal structure of the cavity of the utility model;
[0013] Figure 3 It is a schematic diagram of the structure A of the utility model.
[0014] In the figure: 1. clamp seat; 2. placement opening; 3. slide groove; 4. clamping assembly; 40. clamping block; 41. connecting rod; 42. sliding plate; 43. screw rod 1; 44. driven bevel gear; 45. driving bevel gear; 46. rotating shaft; 47. gear; 48. handle; 5. cavity; 6. stabilizing assembly; 60. rack; 61. movable rod; 62. movable plate; 63. screw rod 2; 64. rotating plate; 65. sleeve. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example
[0016] See also Figure 1-3The utility model provides a technical solution: a fixture for a CNC machine tool, comprising a fixture seat 1, a placement opening 2 is provided on the right side wall of the fixture seat 1, a cavity 5 is provided in the fixture seat 1, a clamping assembly 4 is provided in the cavity 5, the clamping assembly 4 comprises a screw rod 43 provided in the cavity 5, the two ends of the screw rod 43 are respectively connected with the bearings provided on the left and right side walls of the cavity 5, a driven bevel gear 44 is sleeved and installed on the outer wall of the screw rod 43, an active bevel gear 45 meshing with the driven bevel gear 44 is provided in the cavity 5, a rotating shaft 46 is provided on the top of the active bevel gear 45, one end of the rotating shaft 46 passes through the top of the cavity 5 and is connected with a gear 47 provided on the outside, a handle 48 is provided on the top of the gear 47, and the fixture seat 1 is provided outside. The side wall is provided with a stabilizing component 6 meshing with the gear 47, a sliding plate 42 is sleeved on the outer wall of the screw rod 43, guide grooves are provided on the upper and lower side walls of the cavity 5, and guide blocks matching the guide grooves are provided on the upper and lower side walls of the sliding plate 42. Under the action of the guide grooves and the guide blocks, the sliding plate 42 moves on the outer wall of the screw rod 43, and three groups of connecting rods 41 are hingedly provided on the right side wall of the sliding plate 42. Three groups of slide grooves 3 are provided on the right side wall of the clamp seat 1, and the slide grooves 3 are connected with the placement port 2. Clamping blocks 40 are slidably connected in the three groups of slide grooves 3, and one end of the three groups of connecting rods 41 is hinged to the left side walls of the three groups of clamping blocks 40 respectively. Moving grooves are provided on the left side walls of the three groups of slide grooves 3, and the connecting rods 41 are slidably connected in the moving grooves.
[0017] See also Figure 3 The stabilizing component 6 includes a sleeve 65 provided on the outer wall of the clamp seat 1, and a movable plate 62 is slidably connected in the sleeve 65. Limit grooves are provided on the upper and lower side walls of the sleeve 65, and limit blocks matching the limit grooves are provided on the upper and lower side walls of the movable plate 62. Under the action of the limit grooves and the limit blocks, the screw rod 63 drives the movable plate 62 to move. A movable rod 61 is provided on the left side wall of the movable plate 62. One end of the movable rod 61 passes through the left side wall of the sleeve 65 and is connected to the rack 60 provided on the outside. The rack 60 is meshed with the gear 47. A screw rod 2 63 is provided on the right side wall of the movable plate 62. One end of the screw rod 2 63 passes through the right side wall of the sleeve 65 and is connected to the rotating plate 64 provided on the outside.
[0018] Working principle: the staff places the workpiece in the placement port 3, and the staff rotates the handle 48 to drive the gear 47 and the rotating shaft 46 to rotate, and the rotating shaft 46 drives the active bevel gear 45 to rotate, and the active bevel gear 45 drives the driven bevel gear 44 to rotate, and the driven bevel gear 44 drives the screw rod 1 43 to rotate, and under the action of the guide groove and the guide block, the sliding plate 42 moves on the outer wall of the screw rod 1 43, and the sliding plate 42 drives the connecting rod 41 to move, and the connecting rod 41 drives the clamping block 40 to move, and the clamping block 40 can clamp and fix the workpiece. After fixing, the staff rotates the rotating plate 64 to drive the screw rod 2 63 to rotate, and under the action of the limit groove and the limit block, the screw rod 2 63 drives the movable plate 62 to move, and the movable plate 62 drives the movable rod 61 to move, and the movable rod 61 drives the rack 60 to engage with the gear 47, thereby preventing the rotating shaft 46 from rotating on its own, and improving the stability of the clamping block 40 to the workpiece.
[0019] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A fixture for a CNC machine tool, comprising a fixture seat (1), characterized in that: The right side wall of the clamp seat (1) is provided with a placement opening (2), the clamp seat (1) is provided with a cavity (5), the cavity (5) is provided with a clamping assembly (4), the clamping assembly (4) comprises a screw rod (43) provided in the cavity (5), the two ends of the screw rod (43) are respectively connected to bearings provided on the left and right side walls of the cavity (5), a driven bevel gear (44) is sleeved and mounted on the outer wall of the screw rod (43), the cavity (5) is provided with an active bevel gear (45) meshing with the driven bevel gear (44), the top of the active bevel gear (45) is provided with a rotating shaft (46), and the rotating shaft (46) is provided with a rotating shaft (46). The end passes through the top of the cavity (5) and is connected to a gear (47) provided on the outside. A handle (48) is provided on the top of the gear (47). The outer wall of the clamp seat (1) is provided with a stabilizing component (6) meshing with the gear (47). The outer wall of the screw rod (43) is sleeved with a sliding plate (42). The right side wall of the sliding plate (42) is hinged with three groups of connecting rods (41). The right side wall of the clamp seat (1) is provided with three groups of sliding grooves (3). The three groups of sliding grooves (3) are slidably connected with clamping blocks (40). One end of the three groups of connecting rods (41) is hinged with the left side walls of the three groups of clamping blocks (40) respectively.
2. The fixture for a CNC machine tool according to claim 1, characterized in that: The stabilizing component (6) comprises a sleeve (65) provided on the outer wall of the clamp seat (1), a movable plate (62) being slidably connected inside the sleeve (65), a movable rod (61) being provided on the left side wall of the movable plate (62), one end of the movable rod (61) passing through the inner left side wall of the sleeve (65) and being connected to a rack (60) provided on the outside, the rack (60) being meshed with a gear (47), a screw rod 2 (63) being provided on the right side wall of the movable plate (62), one end of the screw rod 2 (63) passing through the inner right side wall of the sleeve (65) and being connected to a rotating plate (64) provided on the outside.
3. The fixture for a CNC machine tool according to claim 2, characterized in that: The upper and lower side walls of the sleeve (65) are both provided with limit grooves, and the upper and lower side walls of the movable plate (62) are both provided with limit blocks matching the limit grooves.
4. The fixture for a CNC machine tool according to claim 1, characterized in that: The upper and lower side walls of the cavity (5) are both provided with guide grooves, and the upper and lower side walls of the sliding plate (42) are both provided with guide blocks matching the guide grooves.
5. The fixture for a CNC machine tool according to claim 1, characterized in that: The left side walls of the three groups of slide grooves (3) are all provided with movable grooves, and the connecting rods (41) are slidably connected in the movable grooves.
6. The fixture for a CNC machine tool according to claim 1, characterized in that: The slide groove (3) is connected to the placement opening (2).