Centering clamping tool

Abstract

The utility model discloses a centering clamping tool, and relates to the technical field of product positioning clamps. The workpiece positioning seat is used for positioning a workpiece, the workpiece positioning seat is arranged at the top of the fixed seat, the workpiece positioning seat is provided with a positioning block capable of sliding up and down, the positioning block comprises a positioning plate, a positioning column and a jacking column, the positioning column and the jacking column are arranged on the positioning plate, and the height of the jacking column is larger than that of the positioning column; the clamping connecting rod parts are movably arranged on the fixing seat, and the two clamping connecting rod parts are symmetrically located on the two sides of the workpiece positioning seat; and the driving part is arranged on the fixed seat and is connected with the two clamping connecting rod parts. The centering clamping tool is high in machining efficiency and precision.

Description

Technical Field

[0001] The utility model relates to the technical field of product positioning fixtures, in particular to a centering clamping tool. Background Art

[0002] Before the workpiece undergoes hole expansion processing, it needs to be positioned using a positioning fixture to improve processing accuracy.

[0003] The current positioning tooling includes a positioning seat and a clamping assembly. The positioning seat is provided with a column for positioning the workpiece. The column is fixed. Since the reaming position of the workpiece is consistent with the position of the column, the reaming process needs to be performed twice, that is, after drilling to a certain depth, the workpiece needs to be flipped 180° and drilled from the other direction. When drilling, the downward stroke of the drill bit must also be controlled, otherwise the positioning column will be damaged.

[0004] Therefore, the current tooling has problems of low efficiency and unstable machining accuracy. Utility Model Content

[0005] The main purpose of the utility model is to provide a centering clamping tool, aiming to provide a centering clamping tool with high processing efficiency and high precision.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a centering clamping tool, which includes:

[0007] Fixed seat;

[0008] A workpiece positioning seat, used for positioning the workpiece, the workpiece positioning seat is arranged on the top of the fixed seat, the workpiece positioning seat has a positioning block that can slide up and down, the positioning block includes a positioning plate and a positioning column and a top column arranged on the positioning plate, and the height of the top column is greater than the height of the positioning column;

[0009] A clamping connecting rod component is movably arranged on the fixing seat, and there are two clamping connecting rod components which are symmetrically located on both sides of the workpiece positioning seat;

[0010] A driving component is arranged on the fixing seat and connected with the two clamping link components.

[0011] Optionally, the clamping link component comprises:

[0012] A fixing block, the fixing block being arranged on a side of the fixing seat;

[0013] A sliding block, the sliding block slidably cooperates with the top of the fixing seat to approach or move away from the workpiece positioning seat;

[0014] A driving arm assembly is used to connect the fixed block and the sliding block, and the driving component is connected to the driving arm assembly.

[0015] Optionally, the driving arm assembly comprises:

[0016] a first joint, one end of which is hingedly connected to the fixing block;

[0017] a second joint, one end of which is hingedly connected to the sliding block, and the second joint is hingedly connected to the first joint;

[0018] A third joint is hingedly arranged at the connection between the first joint and the second joint, and the driving component is hingedly connected to the third joint.

[0019] Optionally, the first connector, the second connector and the third connector are all Y-type connectors.

[0020] Optionally, the sliding block comprises a sliding portion and a clamping portion connected to each other, the sliding portion is slidably matched with the top of the fixing seat, and the clamping portion is adapted to the shape of the workpiece.

[0021] Optionally, the fixing seat comprises:

[0022] A top plate, the workpiece positioning seat is arranged on the top plate, and the clamping connecting rod component is movably arranged on the top plate;

[0023] The bottom plate is located below the top plate, the top plate and the bottom plate are connected via a plurality of connecting columns, the driving component is disposed on the bottom plate, and the driving end of the clamping link component passes through the top plate and is connected to the driving component.

[0024] Optionally, the driving component includes:

[0025] A driving cylinder, wherein the driving cylinder is arranged on the bottom plate;

[0026] A driving plate is connected to the piston rod of the driving cylinder, and a driving end of the clamping connecting rod component passes through the top plate and is connected to the driving plate.

[0027] Optionally, the fixing seat further includes a guide rod, which is arranged between the top plate and the bottom plate, and there are two guide rods arranged at intervals, and the driving plate is provided with two linear bearings, and the two linear bearings are respectively slidably matched with the two guide rods up and down.

[0028] Optionally, the workpiece positioning seat further includes:

[0029] A fixed plate, the fixed plate is arranged on the top of the top plate, and the positioning block is slidably arranged on the fixed plate;

[0030] An abutment plate, the abutment plate being arranged at the bottom of the top plate;

[0031] A return spring is arranged between the positioning block and the abutment plate.

[0032] The technical solution of the utility model includes a fixed seat, a workpiece positioning seat, a clamping connecting rod component and a driving component. The driving component drives the two clamping connecting rod components to move synchronously to achieve clamping or loosening. The workpiece positioning seat has a positioning block that can slide up and down. The positioning block includes a positioning plate and a positioning column and a top column arranged on the positioning plate. The height of the top column is greater than the height of the positioning column. The centering clamping tool cooperates with the drill bit assembly. During the downward movement of the drill bit assembly, the positioning block slides downward to play the positioning column to avoid the drill bit, thereby achieving a one-step hole expansion process. Since the technical means that the positioning block can slide up and down to avoid the drill bit is adopted, the technical problems of low efficiency and unstable processing accuracy in the prior art are effectively solved, thereby achieving the technical effect of high processing efficiency and high precision. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural schematic diagram of an embodiment of the centering clamping tool of the utility model;

[0034] Figure 2 This is a schematic diagram of the split structure of the center clamping tooling of the utility model;

[0035] Figure 3 It is a top view schematic diagram of the center clamping tooling of the utility model;

[0036] Figure 4 for Figure 3 A schematic cross-sectional view along line AA;

[0037] Figure 5 This is a structural schematic diagram of the workpiece positioning seat of the utility model;

[0038] Figure 6 This is a schematic diagram of the structure of the clamping connecting rod component of the utility model;

[0039] Description of Figure Numbers:

[0040] Centering clamping tool 100; fixed seat 10; top plate 11; bottom plate 12; connecting column 13; guide rod 14; workpiece positioning seat 20; positioning block 21; positioning plate 211; positioning column 212; top column 213; fixed plate 22; abutment plate 23; return spring 24; clamping link component 30; fixed block 31; sliding block 32; sliding part 321; clamping part 322; driving arm assembly 33; first joint 331; second joint 332; third joint 333; driving component 40; driving cylinder 41; driving plate 42; linear bearing 43. DETAILED DESCRIPTION

[0041] 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 of 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.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] In addition, in the present utility model, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0045] The utility model provides a centering clamping tool 100.

[0046] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0047] In the embodiments of the present invention, Figures 1 to 5 As shown, the center clamping tool 100 includes a fixed seat 10, a workpiece positioning seat 20, a clamping connecting rod component 30 and a driving component 40, wherein the workpiece positioning seat 20 is used for positioning the workpiece, the workpiece positioning seat 20 is arranged on the top of the fixed seat 10, the workpiece positioning seat 20 has a positioning block 21 that can slide up and down, the positioning block 21 includes a positioning plate 211 and a positioning column 212 and a top column 213 arranged on the positioning plate 211, and the height of the top column 213 is greater than the height of the positioning column 212; the clamping connecting rod component 30 can be movably arranged on the fixed seat 10, and the clamping connecting rod component 30 has two and is symmetrically located on both sides of the workpiece positioning seat 20; the driving component 40 is arranged on the fixed seat 10, and is connected to the two clamping connecting rod components 30.

[0048] The utility model plays a role of fixing and clamping the workpiece, and cooperates with the drill bit assembly to realize the workpiece expansion process. The drill bit assembly comprises a drill bit and a push-down rod, wherein the push-down rod corresponds to the position of the top column 213, the position of the drill bit corresponds to the position of the positioning column 212, and the length of the push-down rod exceeds the length of the drill bit. During the downward movement of the drill bit assembly, the push-down rod pushes the top column 213 to make the positioning block 21 slide down as a whole, that is, the positioning column 212 slides downward synchronously to avoid collision with the drill bit. After the drilling process is completed, the positioning block 21 slides upward, so that the positioning column 212 and the top column 213 protrude from the top end face of the workpiece positioning seat 20 to position the next workpiece to be processed. At the same time, after the positioning column 212 slides downward and disengages from the workpiece, the workpiece loses the restriction of the positioning column 212 and is only fixed by the clamping link component 30. In order to avoid the uneven clamping force on the two sides of the workpiece causing the workpiece to shift in position and thus affect the processing accuracy, the two clamping link components 30 of the utility model are driven by the same driving component 40. The driving component 40 drives the two clamping link components 30 to move synchronously towards each other to approach the workpiece or to move synchronously away from the workpiece. Since the clamping link components 30 on both sides are clamped by the same driving component 40, the clamping force on both sides is the same, so that the workpiece is located in the center position and the drill assembly is aligned up and down.

[0049] The technical solution of the utility model includes a fixed seat 10, a workpiece positioning seat 20, a clamping connecting rod component 30 and a driving component 40. The driving component 40 drives the two clamping connecting rod components 30 to move synchronously to achieve clamping or loosening. The workpiece positioning seat 20 has a positioning block 21 that can slide up and down. The positioning block 21 includes a positioning plate 211 and a positioning column 212 and a top column 213 arranged on the positioning plate 211. The height of the top column 213 is greater than the height of the positioning column 212. The centering clamping tool 100 cooperates with the drill bit assembly. During the downward movement of the drill bit assembly, the positioning block 21 slides downward to make the positioning column 212 avoid the drill bit, thereby realizing the one-step expansion process. Since the positioning block 21 can slide up and down to avoid the drill bit, the technical problem of low efficiency and unstable processing accuracy in the prior art is effectively solved, thereby achieving the technical effect of high processing efficiency and high precision.

[0050] In the embodiment of the present utility model, Figure 4 and Figure 6 As shown, the clamping link component 30 includes a fixed block 31, a sliding block 32 and a driving arm assembly 33, wherein the fixed block 31 is arranged on the side of the fixed seat 10; the sliding block 32 slides with the top of the fixed seat 10 to move closer to or away from the workpiece positioning seat 20; the driving arm assembly 33 is used to connect the fixed block 31 and the sliding block 32, and the driving component 40 is connected to the driving arm assembly 33.

[0051] The utility model drives the driving arm assembly 33 to move through the driving component 40, thereby changing the distance between the sliding block 32 and the fixed block 31. When the distance between the sliding block 32 and the fixed block 31 increases, the two sliding blocks 32 move closer to each other and clamp the workpiece. When the distance between the sliding block 32 and the fixed block 31 decreases, the two sliding blocks 32 move away from each other and release the workpiece. The way of connecting through the driving arm assembly 33 allows the clamping link component 30 to adapt to workpieces of a certain size range, and has a wide range of applications.

[0052] In the embodiment of the present utility model, Figure 4 and Figure 6 As shown, the driving arm assembly 33 includes a first joint 331, a second joint 332 and a third joint 333, wherein one end of the first joint 331 is hingedly connected to the fixed block 31; one end of the second joint 332 is hingedly connected to the sliding block 32, and the second joint 332 is hingedly connected to the first joint 331; the third joint 333 is hingedly arranged at the connection between the first joint 331 and the second joint 332, and the driving component 40 is hingedly connected to the third joint 333. The first joint 331, the second joint 332 and the third joint 333 are Y-shaped, and the angle between the first joint 331 and the second joint 332 is changed by the third joint 333, thereby changing the distance between the sliding block 32 and the fixed block 31.

[0053] In the embodiments of the present invention, Figure 6 As shown, the first connector 331 , the second connector 332 and the third connector 333 are all Y-shaped connectors.

[0054] In the embodiments of the present invention, Figure 4 and Figure 6 As shown, the sliding block 32 includes a sliding portion 321 and a clamping portion 322 connected to each other. The sliding portion 321 is slidably matched with the top of the fixed seat 10, and the clamping portion 322 is adapted to the shape of the workpiece. The sliding portion 321 forms a T-shaped sliding groove, and a sliding block is detachably provided on the top of the fixed seat 10. The sliding portion 321 is slidably matched with the sliding block through the sliding groove. The workpiece processed by the utility model has a cylindrical structure, so the clamping portion 322 has a circular arc plate structure. At the same time, in order to improve the clamping force, a plurality of anti-slip grooves are provided on the side of the clamping portion 322 facing the workpiece.

[0055] In the embodiments of the present invention, Figure 1 and Figure 2 As shown, the fixing seat 10 includes a top plate 11 and a bottom plate 12, wherein the workpiece positioning seat 20 is arranged on the top plate 11, and the clamping connecting rod component 30 is movably arranged on the top plate 11; the bottom plate 12 is located below the top plate 11, and the top plate 11 and the bottom plate 12 are connected by a plurality of connecting columns 13, and the driving component 40 is arranged on the bottom plate 12, and the driving end of the clamping connecting rod component 30 passes through the top plate 11 and is connected to the driving component 40. The utility model fixes the top plate 11 and the bottom plate 12 through four connecting columns 13, and the four connecting columns 13 are respectively arranged at four top corners.

[0056] In the embodiments of the present invention, Figure 2 and Figure 4 As shown, the driving component 40 includes a driving cylinder 41 and a driving plate 42, wherein the driving cylinder 41 is arranged on the bottom plate 12; the driving plate 42 is connected to the piston rod of the driving cylinder 41, and the driving end of the clamping link component 30 passes through the top plate 11 and is connected to the driving plate 42. The driving cylinder 41 drives the driving plate 42 to slide up and down, so that the two clamping link components 30 are synchronously moved to achieve clamping or loosening.

[0057] In the embodiments of the present invention, Figure 1 and Figure 2 As shown, the fixing seat 10 also includes a guide rod 14, which is arranged between the top plate 11 and the bottom plate 12. There are two guide rods 14 and they are arranged at intervals. The driving plate 42 is provided with two linear bearings 43, and the two linear bearings 43 are respectively slidably matched with the two guide rods 14 up and down. The linear bearings 43 and the guide rods 14 are slidably matched to improve the accuracy and reduce the friction.

[0058] In the embodiments of the present invention, Figure 5 As shown, the workpiece positioning seat 20 also includes a fixed plate 22, an abutment plate 23 and a return spring 24, wherein the fixed plate 22 is arranged on the top of the top plate 11, and the positioning block 21 is slidably arranged on the fixed plate 22; the abutment plate 23 is arranged at the bottom of the top plate 11; and the return spring 24 is arranged between the positioning block 21 and the abutment plate 23.

[0059] The above description is only an optional embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A center clamping tool, characterized in that: The centering clamping tool comprises: Fixed seat; A workpiece positioning seat, used for positioning the workpiece, the workpiece positioning seat is arranged on the top of the fixed seat, the workpiece positioning seat has a positioning block that can slide up and down, the positioning block includes a positioning plate and a positioning column and a top column arranged on the positioning plate, and the height of the top column is greater than the height of the positioning column; A clamping connecting rod component is movably arranged on the fixing seat, and there are two clamping connecting rod components which are symmetrically located on both sides of the workpiece positioning seat; A driving component is arranged on the fixing seat and connected with the two clamping link components.

2. The center clamping tool as claimed in claim 1, characterized in that: The clamping connecting rod component comprises: A fixing block, the fixing block being arranged on a side of the fixing seat; A sliding block, the sliding block slidably cooperates with the top of the fixing seat to approach or move away from the workpiece positioning seat; A driving arm assembly is used to connect the fixed block and the sliding block, and the driving component is connected to the driving arm assembly.

3. The centering clamping tool as claimed in claim 2, characterized in that: The drive arm assembly comprises: a first joint, one end of which is hingedly connected to the fixing block; a second joint, one end of which is hingedly connected to the sliding block, and the second joint is hingedly connected to the first joint; A third joint is hingedly arranged at the connection between the first joint and the second joint, and the driving component is hingedly connected to the third joint.

4. The centering clamping tool as claimed in claim 3, characterized in that: The first connector, the second connector and the third connector are all Y-shaped connectors.

5. The centering clamping tool as claimed in claim 2, characterized in that: The sliding block comprises a sliding part and a clamping part which are connected to each other. The sliding part is slidably matched with the top of the fixing seat, and the clamping part is adapted to the shape of the workpiece.

6. The centering clamping tool as claimed in claim 1, characterized in that: The fixing seat comprises: A top plate, the workpiece positioning seat is arranged on the top plate, and the clamping connecting rod component is movably arranged on the top plate; The bottom plate is located below the top plate, the top plate and the bottom plate are connected via a plurality of connecting columns, the driving component is disposed on the bottom plate, and the driving end of the clamping link component passes through the top plate and is connected to the driving component.

7. The centering clamping tool as claimed in claim 6, characterized in that: The driving component comprises: A driving cylinder, wherein the driving cylinder is arranged on the bottom plate; A driving plate is connected to the piston rod of the driving cylinder, and a driving end of the clamping connecting rod component passes through the top plate and is connected to the driving plate.

8. The centering clamping tool as claimed in claim 7, characterized in that: The fixing seat also includes a guide rod, which is arranged between the top plate and the bottom plate. There are two guide rods and they are arranged at intervals. The driving plate is provided with two linear bearings, and the two linear bearings are respectively matched with the two guide rods to slide up and down.

9. The centering clamping tool as claimed in claim 8, characterized in that: The workpiece positioning seat also includes: A fixed plate, the fixed plate is arranged on the top of the top plate, and the positioning block is slidably arranged on the fixed plate; An abutment plate, the abutment plate being arranged at the bottom of the top plate; A return spring is arranged between the positioning block and the abutment plate.

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