Machine tool clamp
By introducing adjustment components and tilting mating surfaces into the machine tool fixture, the fixture structure is simplified, the problem of high cost of existing machine tool fixtures is solved, and low-cost and easy-to-maintain workpiece fixation is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN GUOKAI INTELLIGENT MFG CO LTD
- Filing Date
- 2025-04-28
- Publication Date
- 2026-04-21
AI Technical Summary
Existing machine tool fixtures have complex structures and rely on complex electrical or hydraulic systems, resulting in high equipment costs and making them unsuitable for small or low-automation machine tools.
The adjustment component drives the push rod to adjust its position. The push rod moves up and down through the inclined mating surface, thereby clamping and releasing the workpiece. This simplifies the fixture structure and eliminates the need for a complex drive system.
It reduces equipment costs, facilitates maintenance, improves the practicality of machine tool fixtures, and is suitable for various machine tool types.
Smart Images
Figure CN224144039U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a workpiece fixing mechanism, and more particularly to a machine tool fixture. Background Technology
[0002] Machine tools are devices used to process metals or other hard materials, shaping workpieces into desired shapes, sizes, and precision through cutting, forming, grinding, and other methods. Machine tools are core equipment in manufacturing and are widely used in machinery, automotive, aerospace, mold making, and other fields. Furthermore, machine tools are typically equipped with fixtures to fix the workpiece in place, ensuring stable workpiece positioning during processing and improving machining accuracy and efficiency.
[0003] Existing machine tool fixtures typically employ complex electrical or hydraulic systems to clamp or release the fixtures. The overall structure is complex, making maintenance difficult and increasing equipment costs. Furthermore, they are not suitable for some small machine tools, especially those with low automation requirements. Utility Model Content
[0004] Therefore, it is necessary to provide a machine tool fixture to address the shortcomings of existing technologies.
[0005] A machine tool fixture includes a base, a top seat mounted on the base, an upper chuck, a lower chuck, a push rod passing through the base and the base, and an adjustment assembly mounted on the base and cooperating with the push rod. The adjustment assembly drives the push rod to adjust upward. When the push rod adjusts upward, it drives the upper chuck to clamp the workpiece. The adjustment assembly includes a plug, a first return spring, an adjustment rod, an adjustment head, and a drive head arranged sequentially in the horizontal direction. The adjustment rod has an inclined mating surface. When the drive head adjusts inward, it pushes the adjustment rod to move. During the movement of the adjustment rod, the inclined mating surface pushes the push rod to move upward, causing the push rod to push the upper chuck to clamp the workpiece. Conversely, when the drive head adjusts backward, the first return spring pushes the adjustment rod back to its original position, the mating position height between the mating surface and the push rod decreases, the push rod moves downward, and the upper chuck is released.
[0006] In one embodiment, the adjusting rod is provided with an adjusting groove, and the two sides of the adjusting groove are respectively a first locking surface and a second locking surface. The groove depth of the adjusting groove gradually increases from the first locking surface to the second locking surface, thereby forming the mating surface at the bottom of the adjusting groove. The second locking surface of the adjusting rod is located on the side close to the first return spring.
[0007] In one embodiment, the adjusting head is further provided with a screw hole that extends through the adjusting head along its axial direction. The screw hole has an internal thread on its wall. The driving head includes a turntable, a screw connected to the middle of one side of the turntable, and a handle connected to the edge of one side of the turntable. The screw of the driving head is installed on the screw hole of the adjusting head through an external thread. When it is necessary to clamp the workpiece, the screw of the driving head is rotated to push the adjusting rod inward.
[0008] In one embodiment, the top seat has a first through hole, the base has a second through hole and a third through hole, the third through hole extends horizontally through the base, the second through hole extends downward from the upper end of the base, the second through hole and the third through hole are connected, the top rod passes through the first through hole and the second through hole, the bottom of the top rod abuts against the mating surface, the adjusting rod is disposed in the third through hole, the first return spring is disposed in the third through hole and is disposed between the plug and the adjusting rod, and the adjusting groove is disposed below the second through hole.
[0009] In one embodiment, the third through hole has internal threads on the hole wall near the two side openings, the plug has external threads, and the adjusting head has a fixing part at one end. The outer peripheral surface of the fixing part has external threads. During assembly, the plug is installed on the internal thread of one opening of the third through hole, and the fixing part of the adjusting head is installed on the internal thread of the other opening of the third through hole through the external threads.
[0010] In one embodiment, the outer periphery of the push rod is further provided with a pressure ring, and the machine tool fixture also includes a second return spring. The second return spring abuts against the bottom surface of the top seat and the pressure ring. The second return spring presses the push rod downward so that the bottom of the push rod is tightly pressed against the mating surface.
[0011] In one embodiment, a bracket is also included, which is mounted on a top seat. The upper clamp is mounted on the bracket, and the lower clamp is mounted on the top seat. The upper clamp is rotatable and adjustable on the bracket.
[0012] In one embodiment, the upper chuck has a through-hole in the middle, and the bracket has two opposing support plates with positioning holes. The bracket also has a rotating shaft. During assembly, the upper chuck is positioned between the two support plates, and the rotating shaft passes through both the positioning hole of the support plate and the rotating hole of the upper chuck. One end of the upper chuck extends above the lower chuck, and the other end extends above the first through hole. The upper chuck can rotate around the axis of the rotating shaft.
[0013] In one embodiment, the adjusting rod is further provided with a convex ring, which is located on the adjusting rod near the second locking surface, and the first return spring abuts against the convex ring.
[0014] In one embodiment, the drive head further includes a turntable, a handle connected to one side of the turntable near its edge, and a screw connected to the center of the other side of the turntable.
[0015] The beneficial effects of this machine tool fixture are as follows: By setting an inclined mating surface on the adjusting assembly, when the screw of the drive head adjusts inward, the screw pushes the adjusting rod to move inward. During the movement of the adjusting rod, the inclined mating surface pushes the push rod upward, causing the push rod to push the upper chuck to clamp the workpiece. Conversely, when the screw adjusts backward, the first return spring pushes the adjusting rod back to its original position, the mating height between the mating surface and the push rod decreases, the push rod moves downward and releases the upper chuck. This machine tool fixture has a simple overall structure, eliminates the need for a complex drive system, effectively reduces equipment costs, is easy to maintain, and is highly practical. Attached Figure Description
[0016] Figure 1 , Figure 2 These are schematic diagrams of the machine tool fixture of this utility model at different angles;
[0017] Figure 3 for Figure 2 An exploded view of the machine tool fixture shown;
[0018] Figure 4 This is a front view of the machine tool fixture of this utility model after the base has been removed. Detailed Implementation
[0019] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.
[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0021] Furthermore, 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0023] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0024] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.
[0025] Please see Figures 1 to 4This utility model provides a machine tool fixture for clamping workpieces on a machine tool. The machine tool fixture includes a base 10, a top seat 20 mounted on the base 10, a bracket 30 mounted on the top seat 20, an upper chuck 40 mounted on the bracket 30, a lower chuck 50 mounted on the top seat 20, a push rod 70 passing through the base 10 and the base 10, and an adjustment component 60 mounted on the base 10 and cooperating with the push rod 70. The upper chuck 40 can be rotated and adjusted on the bracket 30. The adjustment component 60 drives the push rod 70 to adjust upward. When the push rod 70 is adjusted upward, the push rod 70 drives the upper chuck 40 to rotate, so as to clamp the workpiece.
[0026] The top seat 20 has a first through hole 21 near its center. The lower chuck 50 is located on one side of the top seat 20. The bracket 30 is installed on the upper surface of the top seat 20 near the lower chuck 50. The upper chuck 40 has a through rotating hole 41 in its center. The bracket 30 has two opposing support plates 31 with positioning holes 311. The bracket 30 also has a rotating shaft 32. During assembly, the upper chuck 40 is positioned between the two support plates 31. The rotating shaft 32 passes through both the positioning hole 311 of the support plate 31 and the rotating hole 41 of the upper chuck 40. One end of the upper chuck 40 extends above the lower chuck 50, and the other end extends above the first through hole 21. The upper chuck 40 can rotate around the axis of the rotating shaft 32.
[0027] The base 10 is provided with a second through hole 11 and a third through hole 12. The third through hole 12 penetrates the base 10 horizontally, and the second through hole 11 extends downward from the upper end of the base 10. The second through hole 11 and the third through hole 12 are connected. The wall of the third through hole 12 near the two side openings is provided with internal threads.
[0028] The adjusting assembly 60 includes a plug 61, a first return spring 62, an adjusting rod 63, an adjusting head 64, and a driving head 65 arranged sequentially in a horizontal direction. The plug 61 has external threads, and the adjusting head 64 has a fixing part 641 at one end. The outer peripheral surface of the fixing part 641 has external threads, and the adjusting head 64 also has a screw hole 642 that penetrates the adjusting head 64 along its axial direction. The wall of the screw hole 642 has internal threads. The driving head 65 includes a turntable 651, a screw 652 connected to the middle of one side of the turntable 651, and a handle 653 connected to the edge of the other side of the turntable 651.
[0029] The adjusting rod 63 is provided with an adjusting groove 631. The two sides of the adjusting groove 631 are respectively the first locking surface 633 and the second locking surface 634. The groove depth of the adjusting groove 631 gradually increases from the first locking surface 633 to the second locking surface 634, thereby forming an inclined mating surface 632 at the bottom of the adjusting groove 631. In addition, the adjusting rod 63 is also provided with a protruding ring 635. The protruding ring 635 is located on the adjusting rod 63 near the second locking surface 634. The outer diameter of the protruding ring 635 is equal to or slightly smaller than the diameter of the third through hole 12.
[0030] During assembly, the plug 61 is installed on the internal thread of one opening of the third through hole 12, the adjusting rod 63 is disposed in the third through hole 12, the first return spring 62 is disposed in the third through hole 12 and between the plug 61 and the convex ring 635 of the adjusting rod 63, and the second locking surface 634 of the adjusting rod 63 is disposed on the side close to the first return spring 62. The adjusting groove 631 is disposed below the second through hole 11. The fixing part 641 of the adjusting head 64 is installed on the internal thread of the other opening of the third through hole 12 through the external thread. The screw 652 of the driving head 65 is installed on the screw hole 642 of the adjusting head 64 through the external thread. The screw 652 extends into the third through hole 12, and the first return spring 62 presses the adjusting rod 63.
[0031] The push rod 70 passes through the first through hole 21 and the second through hole 11, and the bottom of the push rod 70 abuts against the mating surface 632. In addition, a pressure ring 635 is provided on the outer periphery of the push rod 70. This utility model also includes a second return spring 80, which abuts against the bottom surface of the top seat 20 and the pressure ring 635. The second return spring 80 presses the push rod 70 downward, so that the bottom of the push rod 70 is tightly pressed against the mating surface 632.
[0032] In the initial state, the push rod 70 presses down on the mating surface 632 near the second locking surface 634. When it is necessary to clamp the workpiece, the workpiece is first placed on the lower chuck 50. The handle 653 of the drive head 65 is rotated so that the screw 652 extends further into the third through hole 12. The screw 652 pushes the adjusting rod 63 inward, causing the adjusting rod 63 to move towards the plug 61. During the movement of the adjusting rod 63, the push rod 70 passes over the mating surface 632, and the inclined mating surface 632 pushes the push rod 70 upward. During the upward movement of the push rod 70, the head end of the push rod 70 pushes the upper chuck 40, causing the upper chuck 40 to rotate around the axis of the rotating shaft 32. The upper chuck 40 and the lower chuck 50 clamp the workpiece.
[0033] When the workpiece needs to be removed, the drive head 65 is rotated in the opposite direction, the screw 652 moves away from the adjusting rod 63, the first return spring 62 pushes the adjusting rod 63 back to its original position, and the push rod 70 slides across the mating surface 632. During the displacement process, as the mating surface 632 and the push rod 70 decrease in height, the push rod 70 moves downward and releases the upper chuck 40.
[0034] The beneficial effects of this machine tool fixture are as follows: By setting an inclined mating surface 632 on the adjusting assembly 60, when the screw 652 of the drive head 65 is adjusted inward, the screw 652 pushes the adjusting rod 63 to move inward. During the movement of the adjusting rod 63, the inclined mating surface 632 pushes the push rod 70 to move upward, so that the push rod 70 pushes the upper chuck 40 to clamp the workpiece. Conversely, when the screw 652 is adjusted backward, the first return spring 62 pushes the adjusting rod 63 to return to its original position, the mating height between the mating surface 632 and the push rod 70 decreases, the push rod 70 moves downward and releases the upper chuck 40. The machine tool fixture of this invention has a simple overall structure, does not require a complex drive system, effectively reduces equipment costs, is easy to maintain, and is highly practical.
[0035] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0036] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. A machine tool fixture, characterized by, The device includes a base, a top seat mounted on the base, an upper chuck, a lower chuck, a top rod passing through the base and the base, and an adjustment assembly mounted on the base and cooperating with the top rod. The adjustment assembly drives the top rod to adjust upwards. When the top rod adjusts upwards, it drives the upper chuck to clamp the workpiece. The adjustment assembly includes a plug, a first return spring, an adjustment rod, an adjustment head, and a drive head arranged sequentially in the horizontal direction. The adjustment rod has an inclined mating surface. When the drive head adjusts inwards, it pushes the adjustment rod to move. During the movement of the adjustment rod, the inclined mating surface pushes the top rod to move upwards, causing the top rod to push the upper chuck to clamp the workpiece. Conversely, when the drive head adjusts backwards, the first return spring pushes the adjustment rod back to its original position, the mating position height between the mating surface and the top rod decreases, the top rod moves downwards, and the upper chuck is released.
2. The machine tool fixture according to claim 1, characterized in that The adjusting rod is provided with an adjusting groove, and the two sides of the adjusting groove are respectively the first locking surface and the second locking surface. The groove depth of the adjusting groove gradually increases from the first locking surface to the second locking surface, thereby forming the mating surface at the bottom of the adjusting groove. The second locking surface of the adjusting rod is located on the side close to the first return spring.
3. The machine tool fixture according to claim 2, wherein The adjusting head is also provided with a screw hole, which penetrates the adjusting head along the axial direction. The screw hole has an internal thread on its wall. The driving head includes a turntable, a screw connected to the middle of one side of the turntable, and a handle connected to the edge of one side of the turntable. The screw of the driving head is installed on the screw hole of the adjusting head through an external thread. When it is necessary to clamp the workpiece, the screw of the driving head is rotated to push the adjusting rod inward.
4. The machine tool fixture according to claim 2, characterized in that, The top seat has a first through hole, and the base has a second through hole and a third through hole. The third through hole extends horizontally through the base, and the second through hole extends downward from the upper end of the base. The second through hole and the third through hole are connected. The top rod passes through the first through hole and the second through hole, and the bottom of the top rod abuts against the mating surface. The adjusting rod is set in the third through hole. The first return spring is set in the third through hole and is located between the plug and the adjusting rod. The adjusting groove is located below the second through hole.
5. The machine tool clamp of claim 4, wherein, The third through hole has internal threads on the wall near the two side openings, the plug has external threads, and the adjusting head has a fixing part at one end. The outer peripheral surface of the fixing part has external threads. During assembly, the plug is installed on the internal thread of one opening of the third through hole, and the fixing part of the adjusting head is installed on the internal thread of the other opening of the third through hole through the external threads.
6. The machine tool clamp of claim 4, wherein, The outer periphery of the push rod is also provided with a pressure ring. The machine tool fixture also includes a second return spring. The second return spring abuts against the bottom surface of the top seat and the pressure ring. The second return spring presses the push rod downward so that the bottom of the push rod is tightly pressed against the mating surface.
7. The machine tool clamp of claim 4, wherein, It also includes a bracket mounted on the top seat, the upper clamp is mounted on the bracket, the lower clamp is mounted on the top seat, and the upper clamp can be rotated and adjusted on the bracket.
8. The machine tool clamp of claim 7, wherein, The upper chuck has a through-hole in the middle. The bracket has two opposing support plates with positioning holes. The bracket also has a rotating shaft. During assembly, the upper chuck is positioned between the two support plates. The rotating shaft passes through both the positioning hole of the support plate and the rotating hole of the upper chuck. One end of the upper chuck extends above the lower chuck, and the other end extends above the first through hole. The upper chuck can rotate around the axis of the rotating shaft.
9. The machine tool clamp of claim 2, wherein, The adjusting rod is also provided with a convex ring, which is located on the adjusting rod near the second locking surface, and the first return spring abuts against the convex ring.