Precision machining mechanical clamp

Abstract

The utility model relates to the technical field of machining, in particular to a precision machining mechanical clamp which comprises a base, a clamping assembly, a power assembly and a sensing assembly. The first clamping plate and the second clamping plate are fixedly mounted on the two sides of the top of the mounting plate, the fixing sleeve is linearly and fixedly mounted between the first clamping plate and the second clamping plate, the supporting rod is slidably mounted in the fixing sleeve, and the supporting spring is fixedly mounted between the bottom of the fixing sleeve and one end of the supporting rod. The rubber head is fixedly mounted at one end, penetrating through the second clamping plate, of the supporting rod. The first clamping plate, the second clamping plate and the mounting plate are pushed to move through the threaded rod, so that the multiple rubber heads make contact with the surface of a workpiece, the supporting rod compresses the supporting spring, the supporting rod slides in the fixing sleeve, meanwhile, the rubber heads make contact with the surface of the workpiece, the workpiece is clamped and fixed, and the purpose of conveniently clamping the workpiece in an irregular shape is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of machining, in particular to a precision machining mechanical fixture. Background Art

[0002] In the field of machining and production of mechanical equipment and components, fixtures are frequently used. Common machining equipment belongs to the scope of precision machining and has higher requirements for fixtures. A mechanical fixture is a jig used in the process of mechanical manufacturing to fix the machining object, make it occupy the correct position, and accept construction or inspection.

[0003] In the prior art, for example, a precision machining mechanical fixture disclosed in the patent with the publication number CN220560922U includes a base. At both ends of the top of the base, there are fixed plates. On one side of the two fixed plates, there are indicator lights respectively. Inside the base, there is a groove. On the bottom inner wall of the groove, there is an inclined plate. At the outer ends of the fixed plates, there are rotating handles. Between the fixed plates and the rotating handles, there are threaded rods. Between the two fixed plates at both ends, there are clamping plates. Inside the clamping plates, there are sensing devices respectively. This utility model can visually monitor the clamping force, ensure that the clamping force is just right, will not damage the parts, and can also improve the machining accuracy, meet the requirements of high-precision machining, and improve work efficiency.

[0004] In actual use, when clamping a workpiece with an irregular shape, the sensing device cannot contact the workpiece, which will affect the clamping force and clamping accuracy.

[0005] Therefore, it is necessary to provide a new technical solution to overcome the above defects. Summary of the Utility Model

[0006] The purpose of the utility model is to provide a precision machining mechanical fixture that can effectively solve the above technical problems.

[0007] To achieve the purpose of the utility model, the following technical solution is adopted: a precision machining mechanical fixture, comprising: a base, a clamping assembly, a power assembly, and a sensing assembly;

[0008] The clamping assembly includes: a mounting plate, a first clamping plate and a second clamping plate fixedly installed on both sides of the top of the mounting plate, a fixed sleeve linearly fixedly installed between the first clamping plate and the second clamping plate, a support rod slidably installed in the fixed sleeve, a support spring fixedly installed between the bottom of the fixed sleeve and one end of the support rod, and a rubber head fixedly installed at the end of the support rod passing through the second clamping plate.

[0009] Furthermore, the power assembly includes: a motor, a worm fixedly connected to the output end of the motor, a turbine meshing with the worm, a transmission rod fixedly passing through the turbine, first gears symmetrically and fixedly installed at both ends of the transmission rod, second gears meshing with the first gears, a threaded rod fixedly passing through the second gears, and a rotating sleeve fixedly installed at one end of the threaded rod away from the second gear. The rotating sleeve is rotatably installed in the aligned through holes of the first clamping plate and the second clamping plate.

[0010] Furthermore, the height of the first gear is greater than the length of the threaded part of the threaded rod.

[0011] Furthermore, the length of the support rod passing through the second clamping plate is greater than the length of the threaded rod passing through the second clamping plate.

[0012] Compared with the prior art, the present utility model has the following beneficial effects: The present utility model is a precision machining mechanical fixture. The motor drives the worm to rotate. The worm drives the turbine to rotate, the turbine drives the first gear to rotate, the first gear drives the second gear to rotate, the second gear drives the threaded rod to rotate, the threaded rod pushes the first clamping plate, the second clamping plate and the mounting plate to approach each other, multiple rubber heads contact the surface of the workpiece, the support rod compresses the support spring, enabling the support rod to slide in the fixed sleeve, and at the same time, the rubber heads all adhere to the surface of the workpiece, clamping and fixing the workpiece, achieving the purpose of facilitating the clamping of workpieces with irregular shapes. Description of the Drawings

[0013] The drawings are used to provide a further understanding of the present utility model and constitute a part of the specification. Together with the embodiments of the present utility model, they are used to explain the present utility model and do not constitute a limitation to the present utility model.

[0014] Figure 1 It is a schematic structural diagram of a precision machining mechanical fixture of the present utility model.

[0015] Figure 2 It is a schematic structural diagram of the clamping assembly of the present utility model.

[0016] Figure 3 It is a schematic structural diagram of the power assembly of the present utility model.

[0017] Figure 4 It is a schematic cross-sectional structural diagram of a precision machining mechanical fixture of the present utility model.

[0018] Figure 5 It is a schematic structural diagram of the sensing assembly of the present utility model.

[0019] In the figure: 101, base; 102, fixed plate; 103, indicator light; 104, limit plate; 105, support plate; 106, filter screen plate; 107, partition; 200, clamping assembly; 201, mounting plate; 202, first clamping plate; 203, second clamping plate; 204, fixed sleeve; 205, support rod; 206, support spring; 207, rubber head; 300, power assembly; 301, motor; 302, worm; 303, turbine; 304, transmission rod; 305, first gear; 306, second gear; 307, threaded rod; 308, threaded hole; 309, rotating sleeve; 400, sensing assembly; 401, groove; 402, contact head; 403, contact rod; 404, sensing spring; 405, switch. Detailed implementation manners

[0020] In order to make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below. Apparently, the described embodiments are only some of the embodiments of the present utility model, rather than all of them.

[0021] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "transverse", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the protection scope of the present utility model. When a mechanism is referred to as being "fixed to" another mechanism, it can be directly on the other mechanism or there can also be an intermediate mechanism. When a mechanism is considered to be "connected" to another mechanism, it can be directly connected to the other mechanism or there may be an intermediate mechanism at the same time. When a mechanism is considered to be "disposed on" another mechanism, it can be directly disposed on the other mechanism or there may be an intermediate mechanism at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0022] Such as Figures 1 to 5As shown in the figure, a precision machining mechanical fixture of the present utility model includes: a base 101, a clamping assembly 200, a power assembly 300, and a sensing assembly 400. A support plate 105 is fixedly installed in the opening at the top of the base 101. A filter screen plate 106 is fixedly installed in the opening on the support plate 105. Partition plates 107 are symmetrically and fixedly installed at the bottom of the support plate 105. Fixing plates 102 are symmetrically and fixedly installed at both ends of the top of the base 101. Threaded holes 308 are provided in alignment on the side surfaces of the fixing plates 102. Indicator lights 103 are symmetrically and fixedly installed at both ends of the fixing plates 102. Limit plates 104 are symmetrically and fixedly installed between the fixing plates 102, and the limit plates 104 are symmetrically and fixedly installed on both sides of the top of the base 101.

[0023] The clamping assembly 200 includes: a mounting plate 201, the mounting plate 201 is symmetrically slidably installed on the top of the support plate 105, a first clamping plate 202 and a second clamping plate 203 fixedly installed on both sides of the top of the mounting plate 201, the first clamping plate 202 is close to the fixing plate 102, a fixed sleeve 204 linearly fixedly installed between the first clamping plate 202 and the second clamping plate 203, a support rod 205 slidably installed in the fixed sleeve 204, a support spring 206 fixedly installed between the bottom of the fixed sleeve 204 and one end of the support rod 205, and a rubber head 207 fixedly installed at the end of the support rod 205 passing through the second clamping plate 203. The shape of the rubber head 207 is spherical.

[0024] The power assembly 300 includes: a motor 301, the motor 301 is fixedly installed on one side of the base 101, a worm 302 fixedly connected to the output end of the motor 301, the worm 302 is rotatably installed at the bottom of the support plate 105, the worm 302 is located between the partition plates 107, a turbine 303 meshing with the worm 302, a transmission rod 304 fixedly passing through the turbine 303, both ends of the transmission rod 304 pass through the inner wall of the base 101, first gears 305 symmetrically fixedly installed at both ends of the transmission rod 304, second gears 306 meshing with the first gears 305, a threaded rod 307 fixedly passing through the second gears 306, the threaded rod 307 is threadedly installed in the threaded hole 308, the length of the threaded part of the threaded rod 307 is less than the height of the first gear 305, the length of the threaded rod 307 passing through the second clamping plate 203 is less than the length of the support rod 205 passing through the second clamping plate 203, and a rotating sleeve 309 fixedly installed at the end of the threaded rod 307 away from the second gear 306. The rotating sleeve 309 is rotatably installed in the aligned through holes on the first clamping plate 202 and the second clamping plate 203.

[0025] The sensing component 400 includes: a groove 401, which is provided at one end of the threaded rod 307 away from the second gear 306; a contact rod 403 slidably mounted in the groove 401; a contact head 402 fixedly mounted at one end of the contact rod 403 away from the second gear 306; a sensing spring 404 wound around the contact rod 403; and a switch 405 fixedly mounted at the bottom of the groove 401. The switch 405, the indicator light 103, and the motor 301 are electrically connected.

[0026] In the present utility model, the length of the threaded part on the threaded rod 307 is less than the height of the first gear 305, ensuring that the second gear 306 is always meshed with the first gear 305 during the process of the second gear 306 driving the threaded rod 307 to rotate; the length of the threaded rod 307 passing through the second clamping plate 203 is less than the length of the support rod 205 passing through the second clamping plate 203, enabling the clamping force provided by the support rod 205 compressing the support spring 206 to fix the workpiece.

[0027] Working principle: Start the motor 301. The output end of the motor 301 drives the worm 302 to rotate. The worm 302 drives the turbine 303 to rotate. The turbine 303 drives the transmission rod 304 to rotate. The transmission rod 304 drives the first gear 305 to rotate. The first gear 305 drives the second gear 306 to rotate. The second gear 306 drives the threaded rod 307 to rotate in the threaded hole 308. The threaded rod 307 drives the second clamping plate 203, the mounting plate 201, and the first clamping plate 202 to move through the rotating sleeve 309, causing the rubber head 207 to contact the surface of the workpiece and driving the support rod 205 to slide into the fixed sleeve 204 and compress the support spring 206. At the same time, the rubber head 207 presses against the workpiece to position and fix the workpiece. When the workpiece contacts the contact head 402 and presses the contact head 402 into the groove 401, and one end of the contact rod 403 presses the switch 405, the output end of the motor 301 stops rotating, and the indicator light 103 emits light, enabling the clamping force to fix the workpiece and achieving the purpose of facilitating the clamping of workpieces with irregular shapes.

[0028] All the standard parts used in the present utility model can be purchased from the market. The special-shaped parts can be customized according to the descriptions in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts, and equipment all adopt conventional models in the prior art. In addition, the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art.

[0029] It should be understood that those of ordinary skill in the art can make improvements or transformations according to the above description, and all such improvements and transformations should fall within the protection scope of the appended claims of the present utility model.

Claims

1. A precision machining mechanical fixture, characterized in that: include: A base (101), a clamping assembly (200), a power assembly (300), and a touch assembly (400); The clamping assembly (200) comprises: a mounting plate (201), a first clamping plate (202) and a second clamping plate (203) fixedly mounted on both sides of the top of the mounting plate (201), a fixing sleeve (204) linearly fixedly mounted between the first clamping plate (202) and the second clamping plate (203), a support rod (205) slidably mounted in the fixing sleeve (204), a support spring (206) fixedly mounted between the bottom of the fixing sleeve (204) and one end of the support rod (205), and a rubber head (207) fixedly mounted on one end of the support rod (205) passing through the second clamping plate (203).

2. A precision machining mechanical fixture as claimed in claim 1, characterized in that: The power assembly (300) comprises: a motor (301), a worm (302) fixedly connected to the output end of the motor (301), a turbine (303) meshed with the worm (302), a transmission rod (304) fixedly passing through the turbine (303), a first gear (305) symmetrically fixedly mounted on both ends of the transmission rod (304), a second gear (306) meshed with the first gear (305), a threaded rod (307) fixedly passing through the second gear (306), and a rotating sleeve (309) fixedly mounted on one end of the threaded rod (307) away from the second gear (306), wherein the rotating sleeve (309) is rotatably mounted in aligned through holes on the first clamping plate (202) and the second clamping plate (203).

3. A precision machining machine fixture as claimed in claim 2, characterized in that: The height of the first gear (305) is greater than the length of the threaded portion on the threaded rod (307).

4. A precision machining machine fixture as claimed in claim 2, characterized in that: The length of the support rod (205) passing through the second clamping plate (203) is greater than the length of the threaded rod (307) passing through the second clamping plate (203).

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