A clamp

Abstract

The utility model discloses a clamp, including lathe chuck and at least three claw wedge, at least three claw wedge moves on lathe chuck, be provided with the claw on the claw wedge, the number of claw is consistent with the number of claw wedge and one -to -one correspondence, the contact structure of the surface arc of the special-shaped article of being adapted to of the axle core department of the claw close to lathe chuck is provided with, still be provided with the balancing piece for when the centrifugal force of each part is balanced each other when the special-shaped article of being processed rotates on the claw, in this application, through the pertinence design of inclined oil cylinder support, the claw of installing on lathe chuck claw wedge is designed, and the contact structure of the surface arc of the article of being processed of adapting to in the claw is used to the location clamping of inclined oil cylinder support. And in order to the stability of processing, ensure that the article of being processed is clamped and is balanced under stress, still increased the balancing piece, avoid the vibration of producing in the process of processing because of gravity center deviation.

Description

Technical Field

[0001] This utility model relates to the field of component clamping technology, specifically to a clamp. Background Technology

[0002] Current technological status: In the field of parts processing, tilting cylinder supports (such as...) Figure 8 As shown, it is a key transmission component with an asymmetrical and irregular shape, and its outer contour contains multiple irregular curved surfaces and protruding structures.

[0003] Currently, the machining of tilting cylinder supports mainly relies on machining centers for boring operations. However, this method has significant limitations: firstly, due to the irregular shape of the support, the clamping process before machining is complex and time-consuming, severely restricting the machining pace; secondly, the machining center adopts a "rotating cutter head, stationary workpiece" machining mode, which not only results in low reaming efficiency but also accelerates reamer wear. If the cutter is not replaced in time, defective products are easily produced. Moreover, the equipment cost of the machining center itself is much higher than that of CNC lathes. With the continuous increase in production capacity, in order to break through efficiency bottlenecks and reduce manufacturing costs, it is inevitable to shift the machining of tilting cylinder supports to CNC lathes. However, the core problem lies in how to directly clamp the tilting cylinder support using the existing lathe chuck's synchronous opening or closing fixing method, given its asymmetrical irregular shape. Furthermore, when the asymmetrical irregular structure on the lathe chuck rotates, the uneven mass of each part can easily generate additional vibration sources, affecting its machining accuracy. Utility Model Content

[0004] The purpose of this invention is to solve the problem of machining tilting cylinder supports on CNC lathes, and to propose a fixture.

[0005] The objective of this utility model can be achieved through the following technical solutions: A clamp is used for limiting and holding irregularly shaped objects to be processed. The clamp includes a lathe chuck and at least three jaw wedges. The jaw wedges move on the lathe chuck. The clamp is characterized in that the jaw wedges are provided with jaws, the number of jaws is consistent with the number of jaw wedges and corresponds one-to-one, the jaws are provided with a contact structure adapted to the curvature of the surface of the irregularly shaped object near the axis of the lathe chuck, and the jaws are also provided with a balancing element for balancing the weight of the irregularly shaped object.

[0006] As a further embodiment of this utility model: the number of jaws is three, and the contact structures of the three jaws near the axis of the lathe chuck together form a clamping space, which is used to clamp the irregularly shaped object to be processed.

[0007] As a further embodiment of this invention: the three jaws are arranged in a ring at equal intervals along the axis of the lathe chuck.

[0008] As a further embodiment of this utility model: the irregularly shaped object to be processed is a slanted hydraulic cylinder bracket.

[0009] As a further embodiment of this utility model: the three jaws are a first jaw, a second jaw, and a third jaw, and the balancing component is a counterweight block, which is disposed at the end of the first jaw and the second jaw away from the axis of the lathe chuck.

[0010] As a further embodiment of this utility model: both the first jaw and the second jaw include a first block, and one end of the first block near the axis of the lathe chuck protrudes outward to form a first protrusion, which is used to support the inclined cylinder bracket.

[0011] As a further embodiment of this utility model: the contact structure in the first jaw and the second jaw is a positioning part, the positioning part is disposed at one end of the first block near the top of the first protrusion, and the side of the positioning part near the axis of the lathe chuck has a first arc-shaped groove that matches the arc of the contact surface of the inclined cylinder bracket.

[0012] As a further embodiment of this utility model: the third chuck includes a second block, the end of the second block away from the axis of the lathe chuck is bent upward at 90° to form a second protrusion, and the second block is used to support the inclined cylinder bracket.

[0013] As a further embodiment of this utility model: the contact structure in the third claw is a second protrusion, and the inner side of the second protrusion is recessed inward to form a third arc-shaped groove that matches the arc of the contact surface of the inclined oil cylinder bracket.

[0014] As a further embodiment of this utility model, the positioning part is detachably connected to the first block via an mounting component.

[0015] The beneficial effects of this utility model are: 1. In this application, through the targeted design of the inclined cylinder bracket, a jaw is designed and installed on the wedge of the lathe chuck jaw. The contact structure in the jaw that matches the curvature of the surface of the workpiece to be machined is used to limit and clamp the inclined cylinder bracket.

[0016] 2. In addition, to ensure the stability of the processing and to ensure that the workpiece is clamped and subjected to balanced force, a balancing component has been added to prevent vibration caused by the shift of the center of gravity during the processing. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a top view of the present invention; Figure 2 and 3 This is a three-dimensional structural schematic diagram of the present invention; Figure 4 This is a schematic diagram of the clamping of the inclined hydraulic cylinder bracket according to this utility model; Figure 5 , 6 7 is a structural schematic diagram of another embodiment of this utility model; Figure 8 This is a plan view of the inclined hydraulic cylinder bracket.

[0019] In the figure: 1. Lathe chuck; 2. First jaw; 201. First block; 202. First protrusion; 203. First arc groove; 204. Through hole; 205. Counterweight; 3. Second jaw; 4. Third jaw; 401. Second block; 402. Second protrusion; 5. Anti-slip part; 6. Positioning part; 61. Insert rod; 7. Inclined cylinder bracket. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that a three-jaw chuck with the brand name SGSCHUAW and model name hollow hydraulic chuck can be used in this application.

[0022] Please see Figure 1 As shown, the number of jaw wedges on the lathe chuck 1 used in this application is three, so the number of jaws in this application is also three. The number of jaws in this application can be increased as the number of jaw wedges on the lathe chuck 1 increases.

[0023] The three jaws shown in the figure are jaw 2 (first jaw), jaw 3 (second jaw), and jaw 4 (third jaw). Jaws 2, 3, and 4 are positioned on the lathe chuck 1 at the jaw wedges and are equidistant at 120° intervals. This ensures that the center of the lathe chuck 1 is collinear with the center of the tilting cylinder support 7 after positioning, thus guaranteeing the stability of lathe machining. The retraction of the lathe chuck 1 moves the three jaws, thereby completing the positioning, clamping, and demolding of the tilting cylinder support 7.

[0024] All three jaws are detachably mounted on the jaw wedge using fasteners. Specifically, the jaws are mounted on the top of the jaw wedge, and these fasteners can be bolts, screws, or other similar parts. Each of the three jaws has a through hole 204, allowing the bolt or screw to be inserted into this hole and secured to the bottom jaw wedge. The top of the jaw wedge also has a corresponding mounting slot. Furthermore, the jaws can be secured using snap-fit ​​or adhesive methods. For long-term fixation, welding or other methods can be used for permanent fixation.

[0025] It should be noted that the clamping space mentioned in the text is specifically a space enclosed by three claws in a ring, and the inclined cylinder bracket 7 can be placed in this space for clamping and limiting.

[0026] Please see Figure 2 As shown, due to the special structure of the inclined cylinder support 7, the second block 401 of the third jaw 4 is longer than the first block 201 in the design. However, this also creates a problem: when the lathe chuck 1 rotates, uneven force distribution occurs. Therefore, counterweights 205 are added to the tails of the first jaw 2 and the second jaw 3. This balances the centrifugal forces of each part during rotation, preventing additional vibration sources caused by uneven mass distribution. Furthermore, a through-hole is provided on the counterweight 205, and a threaded hole is also provided at the tail end of the first block 201, allowing the counterweight 205 to be fixed to the first block 201 using bolts or other connecting parts.

[0027] Please see Figure 3 As shown, the first protrusion 202 in the first jaw 2 and the second jaw 3 is used to support the inclined hydraulic cylinder bracket 7, and the second block 401 in the third jaw 4 also supports the inclined hydraulic cylinder bracket 7. The two second blocks 401 and the first protrusion 202 are all the same height, so the inclined hydraulic cylinder bracket 7 is placed very stably. Interestingly, the combination of the first protrusion 202 and the first block 201 forms a stepped structure.

[0028] exist Figure 3 The positioning part 6 is specially marked with a filling part. Here, the positioning part 6 is integrally formed with the first block 201. The first arc-shaped groove 203 formed by the recess on the outside of the positioning part 6 is specially opened to better engage the inclined oil cylinder bracket 7. It should also be noted that the concave curvature of the two positioning parts 6 in the first claw 2 and the second claw 3 is not the same. This curvature is specially opened in the design or production process according to the surface contact curvature of the first claw 2 and the second claw 3 after engaging the inclined oil cylinder bracket 7.

[0029] The inner side of the second protrusion 402 is also designed according to the curvature of the contact surface that fits the inclined cylinder bracket 7.

[0030] Therefore, in this application, the two positioning parts, together with the second protrusion 402, are the main components for clamping and positioning the inclined oil cylinder bracket 7.

[0031] It should also be noted that the bottoms of the first claw 2, the second claw 3, and the third claw 4 are all provided with corresponding grooves for mounting with the claw wedges, and the bottoms of the first claw 2, the second claw 3, and the third claw 4 also have anti-slip parts 5. The grooves are for better fitting and mounting of the first claw 2, the second claw 3, and the third claw 4, while the anti-slip parts 5 are for preventing slippage. The anti-slip parts 5 can be anti-slip pads, toothed grooves, etc., and can be replaced with other objects or structures, as long as they have an anti-slip function.

[0032] Please see Figure 4 As shown in the figure, this figure is a clamping effect diagram after the inclined cylinder bracket 7 is clamped by this fixture. It can be seen that the inclined cylinder bracket 7 has a structural shape and the degree of fit between the inclined cylinder bracket 7 and the first claw 2, the second claw 3 and the third claw 4 after being clamped.

[0033] However, it should be noted that, for practical design considerations, a second arc-shaped groove 206 is provided at the end of the second jaw 3 near the axis of the lathe chuck 1. This is because there is another shaft on the inclined cylinder bracket 7, and when the inclined cylinder bracket 7 is placed in the lathe chuck 1, its shaft needs to pass through the circular hole in the lathe chuck 1. The reason for providing the second arc-shaped groove 206 is to prevent the second jaw 3 from excessively squeezing the shaft when closed. At the same time, if the first jaw 2 or the third jaw 4 excessively squeezes the shaft after closing, corresponding grooves can also be provided.

[0034] Please see Figure 5 , 6 As shown in Figure 7, this solution is another embodiment of this application. In this embodiment, the two positioning parts 6 in the first claw 2 and the second claw 3 are designed to be detachable. In order to adapt to other types of products with more curvature, the curvature of one side of the positioning part 6 is changed. What remains unchanged is that the positioning part 6 can still be fixed at one end of the first block 201 near the first protrusion 202 by a detachable installation method, or it still clamps and limits the product with the claw wedges closing together.

[0035] In this application, the first block 201 is provided with an insertion hole near the positioning part 6, and an insertion rod 61 is fixed on the positioning part 6 (wherein the insertion rod 61 is in Figure 5 (Indicated by dashed lines), the insertion rod 61 can be inserted into the insertion hole to limit the positioning part 6. The first arc-shaped groove 203 is formed on one side of the positioning part 6, while the insertion rod 61 is installed on the other side of the positioning part 6.

[0036] The foregoing has provided a detailed description of one embodiment of the present invention, but the description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the scope of the claims of the present invention.

Claims

1. A clamp for limiting and holding an irregularly shaped object to be processed, the clamp comprising a lathe chuck (1) and at least three jaw wedges, the jaw wedges being movable on the lathe chuck (1), characterized in that, The chuck wedge is provided with chucks, the number of chucks is the same as the number of chuck wedges and corresponds one-to-one. The chuck is provided with a contact structure that matches the curvature of the surface of the irregular object at the axis near the lathe chuck (1). The chuck is also provided with a balancing component for balancing the weight of the irregular object.

2. The clamp according to claim 1, characterized in that, The number of jaws is three. The contact structures of the three jaws near the axis of the lathe chuck (1) together form a clamping space, which is used to clamp the irregular object to be processed.

3. A clamp according to claim 2, characterized in that, The three jaws are arranged in a ring at equal intervals along the axis of the lathe chuck (1).

4. A clamp according to claim 2 or 3, characterized in that, The irregularly shaped object to be processed is a slanted hydraulic cylinder bracket (7).

5. A clamp according to claim 4, characterized in that, The three jaws are the first jaw (2), the second jaw (3) and the third jaw (4), and the balancing component is a counterweight (205). The counterweight (205) is located at the end of the first jaw (2) and the second jaw (3) away from the axis of the lathe chuck (1).

6. A clamp according to claim 5, characterized in that, Both the first jaw (2) and the second jaw (3) include a first block (201). One end of the first block (201) near the axis of the lathe chuck (1) protrudes outward to form a first protrusion (202), which is used to support the inclined cylinder bracket (7).

7. A clamp according to claim 6, characterized in that, The contact structure in the first jaw (2) and the second jaw (3) is a positioning part (6). The positioning part (6) is located at one end of the first block (201) above the first protrusion (202). The positioning part (6) has a first arc groove (203) on the side near the axis of the lathe chuck (1) that matches the arc of the contact surface of the inclined cylinder bracket (7).

8. A clamp according to claim 5, characterized in that, The third jaw (4) includes a second block (401), the end of which is bent upward at 90° away from the axis of the lathe chuck (1) to form a second protrusion (402), and the second block (401) is used to support the inclined cylinder bracket (7).

9. A clamp according to claim 8, characterized in that, The contact structure in the third claw (4) is a second protrusion (402), and the inner side of the second protrusion (402) is recessed inward to form a third arc-shaped groove that matches the arc of the contact surface of the inclined cylinder bracket (7).

10. A clamp according to claim 7, characterized in that, The positioning part (6) is detachably connected to the first block (201) via an installation component.

Images