Thin-wall sleeve machining clamp

Abstract

The utility model relates to the technical field of machining clamps, and discloses a thin-wall sleeve machining clamp which comprises a shell, a thin-wall sleeve, a thin-wall sleeve, a clamping device and a clamping device, and a bolt penetrates through the bottom of the shell and is in threaded connection with the shell; according to the machining clamp, the clamping assembly moves out of the interior of the shell through rotation of the bolt, meanwhile, the top plate is driven to move, the first connecting rod rotates to pull the transverse rod back into the shell, meanwhile, the thin-wall sleeve is clamped and fixed through the clamping plate, and compared with an existing device without a groove body on the surface, use is not affected by chippings generated during machining. According to the machining clamp, an inclined block is inserted into a thin-wall sleeve through a positioning assembly and extrudes the inclined block, so that the inclined block pushes a rod body to be inserted into a shell, a second connecting rod is driven to rotate, meanwhile, a pressing plate is pushed to extrude a spring, and the springback force of the spring can push the pressing plate to move downwards, so that the second connecting rod rotates to push the rod body to move; and one end of the inclined block is in contact with the inner side wall of the thin-wall sleeve, so that the position of the thin-wall sleeve is stabilized, the thin-wall sleeve needs to be manually held when being clamped and fixed, and the operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of machining fixtures, in particular to a machining fixture for thin-wall sleeves. Background Technique

[0002] A thin-wall sleeve is a component with a specific shape and structure. It usually has a central cavity and includes a workpiece forming part, a buffer part, and a fixing part along its axial direction. The design of this component aims to reduce the deformation of the workpiece during the cutting process, thereby improving the accuracy and yield rate of the final product. The thin-wall sleeve has a rotary body shape and is characterized by its thin wall. This design helps to keep the workpiece stable during the cutting process, reduce deformation, and ensure machining accuracy. Thin-wall sleeve parts are widely used in actual production, such as tooling bushings, part inserts, etc.

[0003] Chinese Utility Model CN220613760U, a positioning fixture for casing machining, designs a positioning fixture. Its principle is to drive the rotation of bevel gear four by a round rod, which meshes with bevel gear three to drive the rotation of bevel gear three. At the same time, bevel gear three is connected to bevel gear one through a rotating rod, causing bevel gear one to rotate together. When bevel gear one rotates, it meshes with bevel gear two to drive the rotation of the threaded rod, causing the nut on the threaded rod to move, thereby driving the push plate to approach and clamp and fix the outer wall of the thin-wall sleeve.

[0004] However, when the existing device is used to grind and cut the thin-wall sleeve, debris will be generated, which is easy to fall into the internal part of the chute. If it accumulates too much inside the chute, it will affect the connection between the nut and the threaded rod, thereby affecting the movement of the push plate. Therefore, a fixture that is not easily affected by debris is designed for the above-mentioned problems. Content of the Utility Model

[0005] (I) Technical Problems to be Solved

[0006] Aiming at the deficiencies of the existing technology, the utility model provides a machining fixture for thin-wall sleeves, which has the advantage of not being easily affected by the debris generated during machining, and solves the problem that the existing device will be affected by the debris accumulated inside the groove body and affect the rotation of the threaded rod.

[0007] (II) Technical Solutions

[0008] To achieve the above object, the present utility model provides the following technical solutions: A processing fixture for a thin-walled sleeve, comprising: a housing, the bottom of which is penetrated by a bolt, and the bolt is threadedly connected to the housing; a clamping assembly is provided on the housing, and the clamping assembly includes: a top plate rotatably provided on the top of the bolt; a first connecting rod provided inside the housing, and one end thereof is rotatably connected to the top of the top plate; a cross bar, one end of which is inserted into the housing and rotatably connected to the other end of the first connecting rod; a clamping block provided on the top of one end of the cross bar.

[0009] In some embodiments, the clamping assembly further includes: a rubber pad provided on one side of the clamping block.

[0010] In some embodiments, the clamping assembly further includes: a ring body fixedly sleeved on the outer side wall of the housing; a plurality of groove bodies are provided, and are all opened on the top of the ring body according to the position of the clamping block.

[0011] In some embodiments, a positioning assembly is provided on the top of the housing, and the positioning assembly includes: a housing provided on the top of the housing; a rod body, one end of which is inserted into the housing; an inclined block provided at one end of the rod body; a second connecting rod provided inside the housing, and the bottom end thereof is rotatably connected to one end of the rod body; a pressing plate provided inside the housing, and the bottom thereof is rotatably connected to the top end of the second connecting rod; a spring provided on the top of the pressing plate, and the top end of the spring is connected to the inner side wall of the housing.

[0012] In some embodiments, there are four rod bodies, and they are all designed in a pairwise symmetrical manner.

[0013] In some embodiments, the positioning assembly further includes: a vertical rod, the bottom end of which penetrates the top of the housing and passes through the spring to be connected to the pressing plate.

[0014] In some embodiments, the positioning assembly further includes: an arc-shaped strip provided on the top of the inclined block.

[0015] In some embodiments, the positioning assembly further includes: a sponge pad provided at one end of the inclined block.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the present utility model provides a processing fixture for a thin-walled sleeve, which has the following beneficial effects:

[0018] 1. For this processing fixture, when the clamping assembly moves out of the housing by rotating the bolt, the top plate is driven to move at the same time, so that the first connecting rod rotates to pull the cross bar back into the housing, and at the same time, the clamping plate clamps and fixes the thin-walled sleeve. Compared with the existing device without groove bodies on the surface, the debris generated during processing will not affect the use.

[0019] 2. When the thin-walled sleeve is inserted, the positioning component of this processing fixture squeezes the inclined block, causing the inclined block to push the rod body into the interior of the housing, driving the second connecting rod to rotate. At the same time, it pushes the pressing plate to compress the spring. The force of the spring's rebound can push the pressing plate downward to move, causing the second connecting rod to rotate and push the rod body to move, so that one end of the inclined block contacts the inner side wall of the thin-walled sleeve, thereby stabilizing the position of the thin-walled sleeve. When clamping and fixing it, it needs to be manually held, making the operation simpler and more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present utility model;

[0021] Figure 2 is a schematic structural diagram of the interior of the housing of the present utility model;

[0022] Figure 3 is a schematic structural diagram of the connection between the housing and the rod body of the present utility model;

[0023] Figure 4 is a schematic structural diagram of the interior of the housing of the present utility model.

[0024] In the figure: 11, housing; 12, bolt;

[0025] 2, clamping component; 21, top plate; 22, first connecting rod; 23, cross bar; 24, clamping plate; 25, rubber pad; 26, ring body; 27, groove body;

[0026] 3, positioning component; 31, housing; 32, rod body; 33, inclined block; 34, second connecting rod; 35, pressing plate; 36, spring; 37, vertical rod; 38, arc-shaped strip; 39, sponge pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0028] It should be noted that all the directional indications in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture. If this specific posture changes, then the directional indications will also change accordingly.

[0029] In this application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0030] The thin-walled sleeve is a component with a specific shape and structure. It usually has a central cavity and includes a workpiece forming part, a buffer part, and a fixing part along its axial direction. The design of this component aims to reduce the deformation of the workpiece during the cutting process, thereby improving the accuracy and yield of the final product. The thin-walled sleeve has a rotary body shape and is characterized by its thin wall. This design helps to keep the workpiece stable during the cutting process, reduce deformation, and ensure machining accuracy. Thin-walled sleeve parts are widely used in actual production, such as in tooling bushings and part inserts.

[0031] In the related art, a round rod drives the rotation of bevel gear four and meshes with bevel gear three to drive the rotation of bevel gear three. At the same time, bevel gear three is connected to bevel gear one through a rotating rod, causing bevel gear one to rotate together. When bevel gear one rotates, it meshes with bevel gear two to drive the rotation of the threaded rod, causing the nut on the threaded rod to move, thereby driving the push plate to approach and clamp the outer wall of the thin-walled sleeve. However, when the existing device grinds and cuts the thin-walled sleeve during use, debris is easily generated and falls into the inside of the chute. Excessive accumulation in the chute will affect the connection between the nut and the threaded rod, thereby affecting the movement of the push plate.

[0032] To solve the problems in the related art to a certain extent, the embodiment of the present application provides a processing fixture for a thin-walled sleeve. When it is necessary to fix the thin-walled sleeve, first insert the thin-walled sleeve onto the housing 11. At this time, the bottom of the thin-walled sleeve will contact the inclined block 33, and due to the inclined design of the top of the inclined block 33, when inserting, it will squeeze the inclined block 33 to move, so that the inclined block 33 pushes the rod body 32 into the inside of the housing 31. At the same time of inserting, one end of the rod body 32 will drive the connecting rod two 34 to rotate, thereby pushing the pressing plate 35 to move upward to squeeze the spring 36 until the thin-walled sleeve is placed properly. At this time, the spring 36 rebounds and pushes the pressing plate 35 to move downward, so that the pressing plate 35 drives the connecting rod two 34 to rotate and transmit to the rod body 32, so that the rod body 32 extends out from the inside of the housing 31, pushes the inclined block 33 to contact the inner side wall of the thin-walled sleeve, and squeezes and stabilizes the position of the thin-walled sleeve. At this time, when it is necessary to clamp and fix the thin-walled sleeve, only need to rotate the bolt 12 so that the bolt 12 moves out from the inside of the housing 11, and at the same time drive the top plate 21 to move downward. At the same time, the top plate 21 pulls the connecting rod one 22 to rotate, pulls the cross bar 23 back into the inside of the housing 11, and at the same time drives the clamping plate 24 to fit with the outer side wall of the thin-walled sleeve, and clamps and fixes the thin-walled sleeve for processing.

[0033] The present application will be described below with reference to the accompanying drawings and specific embodiments:

[0034] Combined with Figures 1 - 4 Figures 1 - 4 , the embodiment of the present application provides a processing fixture for a thin-walled sleeve, including: a housing 11 whose bottom is penetrated by a bolt 12, and the bolt 12 is threadedly connected to the housing 11; a clamping assembly 2 is arranged on the housing 11, and the clamping assembly 2 includes: a top plate 21 rotatably arranged on the top of the bolt 12; a connecting rod one 22 arranged inside the housing 11, and one end is rotatably connected to the top of the top plate 21; one end of a cross bar 23 is inserted into the inside of the housing 11 and is rotatably connected to the other end of the connecting rod one 22; a clamping plate 24 is arranged on the top of one end of the cross bar 23.

[0035] Specifically, both ends of the connecting rod one 22 are rotatably connected by means of hinge, and the clamping plate 24 is fixedly welded to the cross bar 23.

[0036] When in use, when it is necessary to clamp and fix the thin-walled sleeve, only need to rotate the bolt 12 so that the bolt 12 moves out from the inside of the housing 11, and at the same time drive the top plate 21 to move downward. At the same time, the top plate 21 pulls the connecting rod one 22 to rotate, pulls the cross bar 23 back into the inside of the housing 11, and at the same time drives the clamping plate 24 to fit with the outer side wall of the thin-walled sleeve, and clamps and fixes the thin-walled sleeve for processing.

[0037] In some embodiments, the clamping assembly 2 further includes: a rubber pad 25 arranged on one side of the clamping plate 24.

[0038] During use, since the thin-walled sleeve itself has a relatively thin thickness and will deform under greater extrusion, the rubber pad 25 can better protect the thin-walled sleeve.

[0039] In some embodiments, the clamping assembly 2 further includes: a ring body 26 fixedly sleeved on the outer sidewall of the housing 11; a plurality of groove bodies 27 are provided, and are all opened on the top of the ring body 26 according to the positions of the clamping plates 24.

[0040] During use, when the thin-walled sleeve is placed, its bottom can contact the ring body 26, avoiding contact with the cross bar 23 and causing friction to the cross bar 23. At the same time, the arrangement of the groove bodies 27 corresponds to the positions of the clamping plates 24. When the clamping plates 24 clamp and fix the thin-walled sleeve, they can move inside the groove bodies 27 without blocking the movement of the clamping plates 24.

[0041] In some embodiments, a positioning assembly 3 is provided at the top of the housing 11. The positioning assembly 3 includes: a housing 31 disposed on the top of the housing 11; one end of a rod body 32 is inserted into the interior of the housing 31; an inclined block 33 is disposed at one end of the rod body 32; a second connecting rod 34 is disposed inside the housing 31, and its bottom end is rotatably connected to one end of the rod body 32; a pressing plate 35 is disposed inside the housing 31, and its bottom is rotatably connected to the top end of the second connecting rod 34; a spring 36 is disposed on the top of the pressing plate 35, and the top end of the spring 36 is connected to the inner sidewall of the housing 31.

[0042] Specifically, one end of the rod body 32 is fixedly connected to the inclined block 33 by welding, and both ends of the second connecting rod 34 are rotatably connected by hinging. Both ends of the spring 36 are fixedly connected by snap rings.

[0043] During use, when it is necessary to fix the thin-walled sleeve, first insert the thin-walled sleeve onto the housing 11. At this time, the bottom of the thin-walled sleeve will contact the inclined block 33, and due to the inclined design of the top of the inclined block 33, when inserting, the inclined block 33 is squeezed to move, so that the inclined block 33 pushes the rod body 32 to be inserted into the interior of the housing 31. At the same time of insertion, one end of the rod body 32 will drive the second connecting rod 34 to rotate, thereby pushing the pressing plate 35 to move upward and compress the spring 36 until the thin-walled sleeve is placed well. At this time, the spring 36 rebounds and pushes the pressing plate 35 to move downward, so that the pressing plate 35 pushes the second connecting rod 34 to rotate and transmit to the rod body 32, making the rod body 32 extend from the interior of the housing 31 and push the inclined block 33 to contact the inner sidewall of the thin-walled sleeve and squeeze to stabilize the position of the thin-walled sleeve. The design of the positioning assembly 3 can make it unnecessary to manually hold the thin-walled sleeve when clamping the thin-walled sleeve, which is more labor-saving and more convenient to operate.

[0044] In some embodiments, four rod bodies 32 are provided, and they are all designed in a pairwise symmetrical manner.

[0045] When in use, the arrangement of the four rod bodies 32 can ensure that there are four contact points with the inner side wall of the thin-walled sleeve, reducing the possibility of deformation of the thin-walled sleeve when supporting it.

[0046] In some embodiments, the positioning assembly 3 further includes: the bottom end of the vertical rod 37 penetrates through the top of the housing 31 and passes through the spring 36 to be connected to the pressing plate 35.

[0047] When in use, the arrangement of the vertical rod 37 can stabilize the up-and-down movement track of the pressing plate 35. At the same time, when the spring 36 is compressed, it can prevent the spring 36 from bending, thus better protecting the spring 36.

[0048] In some embodiments, the positioning assembly 3 further includes: an arc-shaped strip 38 is arranged on the top of the inclined block 33.

[0049] When in use, the surface of the arc-shaped strip 38 is smooth and round, which can reduce abrasion when contacting the thin-walled sleeve.

[0050] In some embodiments, the positioning assembly 3 further includes: a sponge pad 39 is arranged at one end of the inclined block 33.

[0051] When in use, the arrangement of the sponge pad 39 can better protect the inner side wall of the thin-walled sleeve when contacting the inner side wall of the thin-walled sleeve. At the same time, it expands the contact area with the inner side wall of the thin-walled sleeve, making the support for the thin-walled sleeve more stable.

[0052] In the description of this specification, the descriptions with reference to the terms "one embodiment", "some embodiments", "example", "specific example", "some examples", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0053] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of the technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0054] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A thin-wall sleeve processing fixture, comprising: A housing (11) having a bottom through which a bolt (12) penetrates, and the bolt (12) is threadedly connected to the housing (11); The invention is characterized in that: a clamping assembly (2) is arranged on the housing (11), and the clamping assembly (2) comprises: A top plate (21) rotatably disposed on the top of the bolt (12); A connecting rod (22) is disposed inside the housing (11), and one end of the connecting rod is rotatably connected to the top of the top plate (21); A cross bar (23), one end of which is inserted into the interior of the housing (11) and is rotatably connected to the other end of the connecting rod (22); A clamping block (24) is arranged on the top of one end of the cross bar (23).

2. A thin-wall sleeve processing fixture according to claim 1, characterized in that: The clamping assembly (2) further comprises: A rubber pad (25) is arranged on one side of the clamping block (24).

3. A thin-wall sleeve processing fixture according to claim 1, characterized in that: The clamping assembly (2) further comprises: A ring body (26) fixedly sleeved on the outer wall of the outer shell (11); A plurality of groove bodies (27) are provided, each of which is opened at the top of the ring body (26) according to the position of the clamping block (24).

4. A thin-wall sleeve processing fixture according to claim 1, characterized in that: A positioning assembly (3) is arranged on the top of the housing (11), and the positioning assembly (3) comprises: A housing (31) is arranged on the top of the housing (11); A rod body (32), one end of which is inserted into the interior of the housing (31); An inclined block (33) is arranged at one end of the rod body (32); A second connecting rod (34) is disposed inside the housing (31), and the bottom end of the connecting rod is rotatably connected to one end of the rod body (32); A pressure plate (35) is disposed inside the housing (31), and the bottom of the pressure plate is rotatably connected to the top of the second connecting rod (34); A spring (36) is arranged on the top of the pressure plate (35), and the top end of the spring (36) is connected to the inner wall of the shell (31).

5. A thin-wall sleeve processing fixture according to claim 4, characterized in that: The rod bodies (32) are provided with four rod bodies (32), which are designed to be symmetrical in pairs.

6. A thin-wall sleeve processing fixture according to claim 5, characterized in that: The positioning component (3) also includes: The bottom end of the vertical rod (37) passes through the top of the shell (31) and passes through the spring (36) to be connected with the pressure plate (35).

7. A thin-wall sleeve processing fixture according to claim 4, characterized in that: The positioning component (3) also includes: The arc strip (38) is arranged on the top of the inclined block (33).

8. A thin-wall sleeve processing fixture according to claim 4, characterized in that: The positioning component (3) also includes: A sponge pad (39) is arranged at one end of the inclined block (33).

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