Clamping fixture for tail end seat of screw rod of numerical control machine tool

Abstract

The utility model belongs to the field of clamping fixtures, and particularly relates to a numerical control machine tool lead screw tail end seat clamping fixture which comprises a base and a workbench, a support is fixedly connected above the left side of the base, a driving mechanism is arranged above the support, a clamping mechanism is arranged on the upper surface of the workbench, and the clamping mechanism comprises a left clamping unit and a right clamping unit. The driving mechanism comprises a push rod, an extension rod, a baffle, a through hole, a first concave base, a first sliding groove, a first sliding block, a first connecting block and a first gear rack, the left side of the push rod is fixedly connected to the upper portion of the support, the right side of the push rod is fixedly connected to the left side of the baffle, and the extension rod is movably connected to the interior of the push rod. Opening and closing of the clamping mechanism are accurately controlled through stretching and retracting of the air cylinder, rapid and accurate clamping action is achieved, the left clamping unit and the right clamping unit are the same in structure and symmetrically distributed, the overall stability of the clamp is improved, and the two clamping units can conduct clamping at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping fixtures, in particular to a clamping fixture for a screw rod tail end seat of a numerical control machine tool. Background Art

[0002] The CNC machine tool screw tail end holder clamp is a tool specially designed for CNC machine tools. Its main function is to stably and accurately clamp the tail end of the screw (usually the feed screw or spindle screw of the machine tool) during the processing. This clamp is usually used to ensure that the screw is fixed in position and does not shake when it rotates at high speed or moves precisely, thereby ensuring the processing accuracy and stability of the machine tool.

[0003] The Chinese patent with publication number CN209503603 discloses a CNC machine tool screw tail end seat clamping fixture, including a fixed base, a clamping and fixing block, a movable slide rail, an ejection cylinder and a bearing seat, the clamping and fixing blocks are provided with two and are relatively arranged on the upper surface of the fixed base, the movable slide rail includes a fixed rail and a movable slide block, the fixed rail is provided with two and is horizontally arranged in a straight line on the fixed base below the two clamping and fixing blocks, the movable slide block is provided with two and is respectively fixed on the lower surface of the clamping and fixing block and is slidably arranged with the fixed rail, the two opposite ends of the clamping and fixing block are respectively longitudinally concave and provided with a slot, the ejection cylinder is provided with two and are respectively located on one side of the slot, the piston end of the ejection cylinder passes through the clamping and fixing block and is arranged in the slot and is provided with a push plate, and the bearing seat is located on the fixed base between the two clamping and fixing blocks.

[0004] The above-mentioned prior art solutions have the following defects: the clamp may only be applicable to screw rods of specific specifications and types, and the clamp may need to be redesigned or adjusted for screw rods of different specifications or types, which limits the versatility of the clamp.

[0005] Therefore, we proposed a CNC machine tool screw tail end seat clamping fixture to solve the above problems. Utility Model Content

[0006] The utility model aims to provide a clamping fixture for the tail end seat of a screw rod of a numerically controlled machine tool, so as to solve the problem of low versatility proposed in the above-mentioned background technology.

[0007] To achieve the above object, the utility model provides the following technical solutions: a CNC machine tool screw tail end seat clamping fixture, comprising a base and a workbench, the left side of the workbench is fixedly connected to the right side of the base, a bracket is fixedly connected to the upper left side of the base, a driving mechanism is arranged above the bracket, a clamping mechanism is arranged on the upper surface of the workbench, and the clamping mechanism comprises a left clamping unit and a right clamping unit;

[0008] The driving mechanism includes a push rod, an extension rod, a baffle, a through hole, a concave base, a slide groove, a slider, a connecting block and a gear bar. The left side of the push rod is fixedly connected to the top of the bracket, the right side of the push rod is fixedly connected to the left side of the baffle, the extension rod is movably connected to the inside of the push rod, the through hole is opened in the middle of the baffle, the concave base is fixedly connected to the upper surface of the right side of the baffle, the slide groove is opened in the middle of the concave base, the bottom of the slider is slidably connected to the inside of the slide groove, the upper surface of the slider is fixedly connected to the lower surface of the connecting block, and the gear bar is fixedly connected to the right side of the connecting block.

[0009] Preferably, a cylinder is provided inside the push rod, the left side of the cylinder is fixedly connected to the left side of the push rod, the left end of the extension rod is fixedly connected to the output end of the cylinder, and the right end of the extension rod passes through a through hole and is fixedly connected to the left side of a connecting block. The cylinder provides a stable power source for the driving mechanism, and the movement of the extension rod can be controlled by the extension and retraction of the cylinder, thereby realizing the opening and closing of the clamping mechanism.

[0010] Preferably, the left clamping unit includes a concave base two, a slider two, a connecting block two, a gear bar two, a clamping bar and an anti-slip bar. The concave base two is fixedly connected to one end of the workbench, the slider two is slidably connected to the groove inside the concave base two, the bottom of the connecting block two is fixedly connected to the upper surface of the slider two, one end of the clamping bar is fixedly connected to the left side of the connecting block two, and the anti-slip bar is fixedly connected to the other end of the clamping bar. By controlling the moving distance and speed of the driving mechanism, the position of the slider two in the concave base two can be adjusted, thereby adjusting the clamping force between the clamping bar and the anti-slip bar.

[0011] Preferably, the left clamping unit and the right clamping unit have the same structure and are respectively arranged at both ends of the workbench. This symmetrical design ensures the stability of the clamp during the clamping process. The two clamping units can work simultaneously, which improves work efficiency.

[0012] Preferably, the gear bar 1 is meshed with a gear column 1 and a gear column 2 on the left and right sides, the gear column 1 and the gear column 2 are rotatably connected with bearings at the bottom, the gear column 1 and the gear column 2 are respectively meshed with the gear bar 2 of the left clamping unit and the gear bar 2 of the right clamping unit, and the power transmission of the clamping mechanism is realized through the meshing of the gear bar and the gear column. When the driving mechanism moves, the gear bar will drive the gear column to rotate, and then drive the slider and the clamping bar to move, so as to realize the clamping action.

[0013] Preferably, the clamping bars of the left clamping unit and the clamping bars of the right clamping unit are distributed up and down, so that the clamping bars will not interfere with each other during movement.

[0014] Preferably, the base and the baffle are L-shaped, and the L-shaped design enables the base and the baffle to stably support the entire clamp, thereby improving the stability of the clamp.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The CNC machine tool screw tail end seat clamping fixture adopts a cylinder as the power source. The opening and closing of the clamping mechanism is accurately controlled by the extension and contraction of the cylinder, realizing fast and accurate clamping action. The left clamping unit and the right clamping unit have the same structure and are symmetrically distributed, which improves the overall stability of the fixture and enables the two clamping units to clamp at the same time.

[0017] 2. The CNC machine tool screw tail end seat clamping fixture has an anti-slip strip arranged on the clamping strip, which enhances the friction between the fixture and the workpiece, prevents the workpiece from falling off during the processing, and improves the safety and stability of the processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall front plan view of the structure of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of the utility model;

[0020] Figure 3 It is the overall front side view of the utility model;

[0021] Figure 4 It is a schematic diagram of the overall side structure of the utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the push rod of the utility model.

[0023] In the figure: 1 base, 101 bracket, 2 push rod, 201 extension rod, 202 cylinder, 3 baffle, 301 through hole, 4 concave base one, 401 slide groove one, 402 slider one, 403 connecting block one, 404 gear bar one, 501 gear column one, 502 gear column two, 503 bearing, 6 workbench, 701 concave base two, 702 slider two, 703 connecting block two, 704 gear bar two, 705 clamping strip, 706 anti-slip strip. DETAILED DESCRIPTION

[0024] 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.

[0025] See also Figure 1-Figure 5The utility model provides a technical solution: a CNC machine tool screw tail seat clamping fixture, including a base 1 and a workbench 6, the left side of the workbench 6 is fixedly connected to the right side of the base 1, and the workbench 6 is the main operating platform of the fixture, which is used to place and fix the workpiece to be processed. Its close connection with the base 1 ensures the stability of the working process. A bracket 101 is fixedly connected to the upper left side of the base 1, and a driving mechanism is arranged above the bracket 101. The bracket 101 is used to support and fix the driving mechanism to ensure the stable movement of the push rod 2 and the extension rod 201. The rigidity and stability of the bracket 101 are crucial to the performance of the entire fixture. A clamping mechanism is arranged on the upper surface of the workbench 6, and the clamping mechanism includes a left clamping unit and a right clamping unit;

[0026] The driving mechanism includes a push rod 2, an extension rod 201, a baffle 3, a through hole 301, a concave base 4, a slide groove 401, a slider 402, a connecting block 403 and a gear bar 404. The left side of the push rod 2 is fixedly connected to the top of the bracket 101, and the right side of the push rod 2 is fixedly connected to the left side of the baffle 3. Through the drive of the cylinder 202, they can accurately control the opening and closing of the clamping mechanism. The base 1 and the baffle 3 are L-shaped. The L-shaped base 1 and the baffle 3 design not only provide sufficient support area, but also can form a good connection with the baffle 3, making the entire clamp more stable. A cylinder 202 is arranged inside the push rod 2. The left side of the cylinder 202 is fixedly connected to the left side of the inside of the push rod 2. The cylinder 202 serves as a power source. The cylinder 202 provides stable power for the push rod 2 and the extension rod 201, ensuring that the clamping mechanism can respond quickly and accurately. The left end of the extension rod 201 is fixedly connected to the output end of the cylinder 202 , and the right end of the extension rod 201 passes through the through hole 301 and is fixedly connected to the left side of the connecting block 1 403 .

[0027] The extension rod 201 is movably connected to the inside of the push rod 2, and the through hole 301 is opened in the middle of the baffle 3. The baffle 3 is used to support the extension rod 201, and the through hole 301 allows the extension rod 201 to pass smoothly. The design of the baffle 3 and the through hole ensures the smooth operation of the driving mechanism. The concave base 14 is fixedly connected to the upper surface of the right side of the baffle 3, the slide groove 1401 is opened in the middle of the concave base 14, the bottom of the slider 1402 is slidably connected to the inside of the slide groove 1401, the upper surface of the slider 1402 is fixedly connected to the lower surface of the connecting block 1403, the gear bar 1404 is fixedly connected to the right side of the connecting block, the left and right sides of the gear bar 1404 are meshed with the gear column 1501 and the gear column 2502, the bottom of the gear column 1501 and the gear column 2502 are rotatably connected with the bearing 503, the gear column 1501 and the gear column 2502 are respectively meshed with the gear bar 2704 of the left clamping unit and the gear bar 2704 of the right clamping unit, and the meshing transmission of the gear bar and the gear column is the key to achieve precise control of the clamping mechanism. Through the movement of the gear bar 1404, the gear column 1501 and the gear column 2502 are driven to rotate, and the left clamping unit and the right clamping unit are driven respectively. The concave base 4 provides an installation space for a slide groove 401 , and the sliding of a slider 402 in the slide groove drives a connecting block 403 to move, thereby driving a gear bar 404 .

[0028] The left clamping unit includes a concave base 2 701, a slider 2 702, a connecting block 2 703, a gear bar 2 704, a clamping bar 705 and an anti-slip bar 706. The concave base 2 701 is fixedly connected to one end of the workbench 6, the slider 2 702 is slidably connected to the groove inside the concave base 2 701, the bottom of the connecting block 2 703 is fixedly connected to the upper surface of the slider 2 702, one end of the clamping bar 705 is fixedly connected to the left side of the connecting block 2 703, and the anti-slip bar 706 is fixedly connected to the other end of the clamping bar 705. The design of the clamping bar 705 and the anti-slip bar 706 can firmly fix the workpiece to prevent it from falling off during the processing. The left clamping unit and the right clamping unit have the same structure and are respectively arranged at both ends of the workbench 6. The clamping bar 705 of the left clamping unit and the clamping bar 705 of the right clamping unit are distributed up and down. The up and down distribution prevents the left and right clamping units from colliding, and is convenient for clamping and fixing the bases of the tails of the screw rods of different sizes.

[0029] Working principle: In the initial state, the cylinder 202 is not activated, and the push rod 2 and the extension rod 201 are in a stationary state. At this time, the clamping bars 705 of the left clamping unit and the right clamping unit are in an open state, ready to clamp the workpiece. When the cylinder 202 is activated, its output end pushes the extension rod 201 to move to the right. The extension rod 201 drives the gear bar 1 404 to move to the right through the connecting block 1 403. The movement of the gear bar 1 404 meshes with the gear column 1 501 and the gear column 2 502, driving them to rotate counterclockwise. The gear column 1 501 and the gear column 2 502 drive the gear bar 2 704 of the left clamping unit and the gear bar 2 704 of the right clamping unit through meshing transmission, respectively, and the movement of the gear bar 2 704 drives the connecting block 2 703 and the slider 2 702 to slide to the right in the groove of the concave base 2 701. This causes the clamping bar 705 to move in the direction of the anti-slip bar 706 until the workpiece is firmly clamped. By controlling the telescopic distance of the cylinder 202 , the clamping force between the clamping strip 705 and the anti-slip strip 706 can be adjusted to accommodate workpieces of different sizes and materials.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used 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. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A screw tail end holder clamp for a CNC machine tool, comprising a base (1) and a workbench (6), characterized in that: The left side of the workbench (6) is fixedly connected to the right side of the base (1); a bracket (101) is fixedly connected to the upper left side of the base (1); a driving mechanism is arranged above the bracket (101); a clamping mechanism is arranged on the upper surface of the workbench (6); the clamping mechanism comprises a left clamping unit and a right clamping unit; The driving mechanism comprises a push rod (2), an extension rod (201), a baffle (3), a through hole (301), a concave base (4), a slide groove (401), a slider (402), a connecting block (403) and a gear bar (404), wherein the left side of the push rod (2) is fixedly connected to the top of the bracket (101), the right side of the push rod (2) is fixedly connected to the left side of the baffle (3), the extension rod (201) is movably connected to the inside of the push rod (2), the through hole (301) is arranged in the middle of the baffle (3), the concave base (4) is fixedly connected to the upper surface of the right side of the baffle (3), the slide groove (401) is arranged in the middle of the concave base (4), the bottom of the slider (402) is slidably connected to the inside of the slide groove (401), the upper surface of the slider (402) is fixedly connected to the lower surface of the connecting block (403), and the gear bar (404) is fixedly connected to the right side of the connecting block.

2. A CNC machine tool screw tail end seat clamping fixture according to claim 1, characterized in that: A cylinder (202) is arranged inside the push rod (2); the left side of the cylinder (202) is fixedly connected to the left side inside the push rod (2); the left end of the extension rod (201) is fixedly connected to the output end of the cylinder (202); and the right end of the extension rod (201) passes through the through hole (301) and is fixedly connected to the left side of the connecting block 1 (403).

3. The CNC machine tool screw tail end seat clamp according to claim 1, characterized in that: The left clamping unit comprises a concave base 2 (701), a slider 2 (702), a connecting block 2 (703), a gear bar 2 (704), a clamping bar (705) and an anti-slip bar (706), wherein the concave base 2 (701) is fixedly connected to one end of the workbench (6), the slider 2 (702) is slidably connected to a groove inside the concave base 2 (701), the bottom of the connecting block 2 (703) is fixedly connected to the upper surface of the slider 2 (702), one end of the clamping bar (705) is fixedly connected to the left side of the connecting block 2 (703), and the anti-slip bar (706) is fixedly connected to the other end of the clamping bar (705).

4. The CNC machine tool screw tail end seat clamp according to claim 1, characterized in that: The left clamping unit and the right clamping unit have the same structure and are respectively arranged at two ends of the workbench (6).

5. The CNC machine tool screw tail end seat clamp according to claim 1, characterized in that: The left and right sides of the gear bar 1 (404) are meshedly connected with a gear column 1 (501) and a gear column 2 (502); the bottoms of the gear column 1 (501) and the gear column 2 (502) are rotatably connected with bearings (503); the gear column 1 (501) and the gear column 2 (502) are respectively meshed with the gear bar 2 (704) of the left clamping unit and the gear bar 2 (704) of the right clamping unit.

6. The CNC machine tool screw tail end seat clamp according to claim 1, characterized in that: The clamping bar (705) of the left clamping unit and the clamping bar (705) of the right clamping unit are distributed up and down.

7. The CNC machine tool screw tail end seat clamp according to claim 1, characterized in that: The base (1) and the baffle (3) are L-shaped.

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