Combined tool for porous shaft

Abstract

The invention provides a combined tool for a porous shaft, and belongs to the technical field of machinery. The problem that an existing tool is low in machining precision and machining efficiency is solved. The combined tool for the multi-hole shaft comprises two coaxially-arranged connecting discs, a long-strip-shaped clamp body is fixedly connected between the connecting discs, a row of mounting holes for workpieces to be inserted are formed in the clamp body, hydraulic chucks are arranged in the mounting holes, and each hydraulic chuck comprises a conical sleeve embedded in the corresponding mounting hole and a piston sleeve capable of driving the conical sleeve to move axially. The inner side wall of the mounting hole is provided with an inner conical surface, and the conical sleeve is provided with an outer conical part which can abut against the inner conical surface. The combined tool for the porous shaft has the advantages of being high in machining precision and machining efficiency.

Description

Technical Field

[0001] The invention belongs to the field of mechanical technology and relates to a tool, in particular to a combined tool for a porous shaft. Background Art

[0002] Fixtures are used to quickly secure workpieces and maintain the correct relative position of machine tools, cutting tools, and workpieces. They are essential components for machining. When machining workpieces on machine tools, they must be properly mounted and clamped before machining to ensure that the workpiece surface meets the technical requirements for dimensions, geometry, and relative positional accuracy specified in the drawings. While existing fixtures can provide stable product clamping, they require numerous process steps, excessive machine space, and significant personnel requirements. Excessive clamping can lead to surface scratches and can easily cause workers to install the workpiece incorrectly, making them inconvenient for daily use. Therefore, a new four-axis rotary fixture has been proposed to improve production efficiency.

[0003] For example, a four-station four-axis rotary T-bar milling tool (application number: 202020336729.7) disclosed in a Chinese patent document includes two left and right circular discs, a connecting plate is provided between the two left and right circular discs, and two pairs of left and right embedded groove groups are provided on the front of the connecting plate. Each pair of embedded groove groups includes two left and right vertically arranged embedded grooves, a first waist-shaped hole is provided in the middle of the embedded groove, a positioning block is provided in the embedded groove, and a V-shaped groove is provided on the front of the positioning block along its vertical centerline. A second waist-shaped hole is provided in the middle of the V-shaped groove, which corresponds to the first waist-shaped hole. A T-bar part is provided in the V-shaped groove. A backing positioning plate is provided at the bottom of the embedded groove group, and two upper and lower pressure plates are provided on the front side of the embedded groove group for pressing the T-bar part. However, the positioning effect of the processing tool on the workpiece is not ideal, which affects the processing accuracy. The pressure plate is fixed to the workpiece in the V-shaped groove by bolts, so it is inconvenient to disassemble and assemble, which affects the processing efficiency. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned problems in the existing technology and to propose a combined tooling for porous shafts that can improve processing accuracy and processing efficiency.

[0005] The objectives of the present invention can be achieved through the following technical solutions: a combined tooling for a porous shaft, comprising two coaxially arranged connecting plates, a long strip of clamping body fixedly connected between the connecting plates, and a row of mounting holes for inserting workpieces on the clamping body, characterized in that a hydraulic chuck is provided in each of the mounting holes, the hydraulic chuck comprises a tapered sleeve embedded in the mounting hole and a piston sleeve capable of driving the tapered sleeve to move axially, the inner side wall of the mounting hole has an inner conical surface, the tapered sleeve has an outer conical portion and the outer conical portion can abut against the inner conical surface.

[0006] During operation, the workpiece is inserted into the mounting hole, and the piston sleeve drives the tapered sleeve to move axially. The outer cone squeezes the inner cone surface to deform the hydraulic chuck and clamp the workpiece, so that the workpiece is positioned on the clamp body. After processing, the hydraulic chuck is reset and the workpiece is released, and the workpiece can be removed. Since the clamp body is provided with the above-mentioned row of mounting holes and hydraulic chuck, there is no need to calibrate the position of each workpiece when batch processing workpieces, which has the advantages of high processing efficiency, prevention of processing errors, improved processing accuracy, and easy operation.

[0007] In the above-mentioned combined tooling for porous shafts, the middle portion of the piston sleeve has a through hole, the outer side of the piston sleeve has an annular boss, and a hydraulic chamber is formed between the outer side wall of the piston sleeve and the clamp body.

[0008] In the aforementioned multi-hole shaft assembly tool, a locating sleeve is embedded in the upper portion of the mounting hole. A through-hole for inserting a workpiece is provided in the middle of the locating sleeve, and a disc-shaped locating portion is provided at the upper end of the locating sleeve. By replacing different locating portions, the tool can be adapted to workpieces of varying sizes, offering a wide range of applications.

[0009] In the aforementioned multi-hole shaft assembly, the mounting holes are arranged in groups of two, and a positioning aid is provided between the mounting holes in the same group. The positioning aid is located at the upper end of the clamping body. The positioning aid positions the upper end of the workpiece, thereby improving the positioning effect of the workpiece.

[0010] In the above-mentioned multi-hole shaft assembly tool, the positioning auxiliary device includes a connecting seat fixedly connected to the clamp body, a limit block hinged on the connecting seat, the limit block is T-shaped, the lower end of the limit block is hinged to the clamp body, and the upper end of the limit block is provided with protruding limit convex bodies on both sides for embedding into the spline groove of the workpiece. The middle part of the limit block is vertically fixed with a handle, and the handle can drive the limit block to swing. After the workpiece is inserted into the mounting hole and in place, the limit block is rotated so that the limit convex body is embedded in the spline groove of the workpiece, thereby achieving precise positioning of the workpiece. The workpiece is then positioned in the mounting hole by the hydraulic chuck. This has the advantages of good positioning effect, high positioning accuracy, simple structure, and convenient operation.

[0011] In the above-mentioned combined tooling for porous shafts, a pull rod is horizontally passed through the connecting seat, and a spring is provided between the pull rod and the connecting seat. The spring pushes the pull rod so that the inner end of the pull rod rests on the limit block.

[0012] In the aforementioned multi-porous shaft assembly, the inner end of the pull rod is a disc-shaped abutment portion, the outer end surface of which can abut against the outer wall of the limit block. When positioning a workpiece, the spring force causes the pull rod's abutment portion to abut against the outer wall of the limit block, resulting in excellent positioning and a simple structure. When removing the workpiece, the pull rod is pulled to overcome the spring force, disengaging the abutment portion from the limit block, and the limit block can be rotated, resulting in convenient operation.

[0013] In the aforementioned multi-hole shaft assembly, the abutment portion has a protruding, conical tip in the middle, and the outer wall of the stop block is provided with a retaining groove matching the tip, with the tip being embedded in the retaining groove. The retaining groove securely positions the abutment portion and the stop block.

[0014] In the aforementioned multi-porous shaft assembly, a ball bearing is positioned on the outer end surface of the abutment portion, protruding from the outer end surface of the abutment portion, and a retaining groove matching the ball bearing is provided on the outer side wall of the stop block. The ball bearing is embedded in the retaining groove, providing a secure positioning between the abutment portion and the stop block.

[0015] In the above-mentioned multi-hole shaft assembly tool, the outer end of the pull rod is fixedly connected with a handle. The above-mentioned arrangement facilitates the operation of the pull rod and has the advantages of simple structure and convenient operation.

[0016] Compared with the existing technology, this multi-hole shaft combined tooling has the following advantages:

[0017] 1. The piston sleeve drives the tapered sleeve to move axially, and the outer cone squeezes the inner cone surface to deform the hydraulic chuck and clamp the workpiece, so that the workpiece is positioned on the clamp body. After processing, the hydraulic chuck is reset and the workpiece is released, and the workpiece can be removed. Since the clamp body is provided with the above-mentioned row of mounting holes and hydraulic chuck, there is no need to calibrate the position of each workpiece when processing workpieces in batches, which has the advantages of high processing efficiency, prevention of processing errors, improved processing accuracy, and easy operation.

[0018] 2. By replacing different positioning parts, this tooling can be applied to workpieces of different sizes, and has the advantage of a wide range of applications;

[0019] 3. After the workpiece is inserted into the mounting hole, the limiting block is rotated to make the limiting convex body embed into the spline groove of the workpiece, thereby realizing the precise positioning of the workpiece. Then the workpiece is positioned in the mounting hole by the hydraulic chuck. It has the advantages of good positioning effect, high positioning accuracy, simple structure and easy operation.

[0020] 4. The ball is embedded in the limiting groove, so that the abutment part and the limiting block are firmly positioned. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional schematic diagram of the combined tooling for the porous shaft.

[0022] Figure 2 This is a schematic diagram of the main view of the combined tooling for the porous shaft.

[0023] Figure 3 yes Figure 2 AA cross-sectional view of .

[0024] Figure 4 yes Figure 2 BB cross-sectional diagram.

[0025] Figure 5 It is a cross-sectional schematic diagram of another form of the positioning auxiliary device of this tool.

[0026] In the figure, 1. connecting plate; 2. clamping body; 2a. mounting hole; 2b. inner conical surface; 3. hydraulic chuck; 3a. tapered sleeve; 3b. piston sleeve; 3b1. outer conical portion; 3b2. annular boss; 4. positioning sleeve; 4a. positioning portion; 5. positioning auxiliary device; 5a. connecting seat; 5b. limiting block; 5b1. limiting protrusion; 5b2. limiting groove; 5c. pull rod; 5c1. abutment portion; 5c2. center; 5d. spring; 5e. ball; 6. handle; 7. workpiece. DETAILED DESCRIPTION

[0027] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solutions of the present invention, but the present invention is not limited to these embodiments.

[0028] like Figures 1 to 4 As shown, the combined tooling for porous shafts includes two coaxially arranged connecting plates 1, with an elongated clamping body 2 fixedly connected between the connecting plates 1. The clamping body 2 is provided with a row of mounting holes 2a for inserting the workpiece 7. The mounting holes 2a are each provided with a hydraulic chuck 3. The hydraulic chuck 3 includes a tapered sleeve 3a embedded in the mounting hole 2a and a piston sleeve 3b capable of driving the tapered sleeve 3a to move axially. The inner side wall of the mounting hole 2a has an inner tapered surface 2b, and the tapered sleeve 3a has an outer tapered portion 3b1, and the outer tapered portion 3b1 can abut against the inner tapered surface 2b.

[0029] The piston sleeve 3b has a through hole in the middle and an annular shoulder 3b2 on its outer side. A hydraulic chamber is formed between the outer wall of the piston sleeve 3b and the clamp body 2, resulting in a simple and compact structure. A positioning sleeve 4 is embedded above the mounting hole 2a. The central portion of the positioning sleeve 4 includes a through hole for inserting a workpiece 7. The upper end of the positioning sleeve 4 has a disc-shaped positioning portion 4a. By replacing different positioning portions 4a, the fixture can be adapted to workpieces 7 of varying sizes, offering a wide range of applications.

[0030] The mounting holes 2a are arranged in groups of two, and a positioning auxiliary device 5 is provided between the same group of mounting holes 2a. The positioning auxiliary device 5 is located at the upper end of the clamp body 2. The positioning auxiliary device 5 includes a connecting seat 5a fixedly connected to the clamp body 2, and a limit block 5b is hingedly connected to the connecting seat 5a. The limit block 5b is T-shaped, and the lower end of the limit block 5b is hinged to the clamp body 2. The upper end of the limit block 5b is flanked by protruding limit projections 5b1 for inserting into the spline groove of the workpiece 7. A handle 6 is vertically fixed to the middle of the limit block 5b, and the handle 6 can drive the limit block 5b to swing. By rotating the limit block 5b, the limit projection 5b1 is inserted into the spline groove of the workpiece 7, thereby achieving precise positioning of the workpiece 7. The workpiece 7 is then positioned in the mounting hole 2a by the hydraulic chuck 3. This has the advantages of good positioning effect, high positioning accuracy, simple structure, and convenient operation.

[0031] A pull rod 5c is provided transversely through the connecting seat 5a. A spring 5d is provided between the pull rod 5c and the connecting seat 5a. The inner end of the pull rod 5c is a disc-shaped abutment portion 5c1. The spring 5d pushes the pull rod 5c so that the outer end surface of the abutment portion 5c1 can abut against the outer wall of the limit block 5b. The middle portion of the abutment portion 5c1 has a protruding, conical tip 5c2. The outer wall of the limit block 5b is provided with a limiting groove 5b2 that matches the tip 5c2, and the tip 5c2 can be embedded in the limiting groove 5b2. With the tip 5c2 embedded in the limiting groove, the abutment portion 5c1 and the limit block 5b are firmly positioned. A handle 6 is fixed to the outer end of the pull rod 5c to facilitate operation of the pull rod 5c, which has the advantages of simple structure and convenient operation.

[0032] As another way, Figure 5 As shown, a ball 5e is positioned on the outer end surface of the abutting portion 5c1, and the ball 5e protrudes from the outer end surface of the abutting portion 5c1. A limiting groove 5b2 matching the ball 5e is provided on the outer side wall of the limiting block 5b. The ball 5e is embedded in the limiting groove 5b2, so that the abutting portion 5c1 and the limiting block 5b are firmly positioned.

[0033] The porous shaft includes a shaft body, the upper end of which is provided with a disc portion, and the end face of the upper end of the shaft body has a spline. During operation, the workpiece 7 is inserted into the mounting hole 2a, the disc portion of the upper end of the workpiece 7 abuts against the positioning portion 4a, the pull rod 5c is pulled outward to disengage the top 5c2 of the abutting portion 5c1 from the limiting groove 5b2 of the limiting block 5b, and then the limiting block 5b is rotated to allow the two limiting protrusions 5b1 of the limiting block 5b to be embedded in the spline grooves of the two adjacent workpieces 7. The pull rod 5c is released, and under the elastic force of the spring 5d, the spring 5d pushes the pull rod 5c so that the top 5c2 of the abutting portion 5c1 can be embedded in the limiting groove 5b2 of the limiting block 5b, and then the hydraulic chamber is injected with pressurized oil, which drives the tapered sleeve 3a to move axially through the piston sleeve 3b, squeezing the inner cone surface 2b through the outer cone 3b1. The hydraulic chuck 3 is deformed and clamps the workpiece 7, so that the workpiece 7 is positioned on the clamp body 2. After processing, the hydraulic chuck 3 is reset and the workpiece 7 is released. The pull rod 5c is pulled outward to make the top 5c2 of the abutment part 5c1 disengage from the limiting groove 5b2 of the limiting block 5b, and then the limiting block 5b is rotated in the opposite direction to make the two limiting protrusions 5b1 of the limiting block 5b disengage from the spline groove of the workpiece 7, and the workpiece 7 can be removed. Since the clamp body 2 is provided with the above-mentioned row of mounting holes 2a and the hydraulic chuck 3, there is no need to calibrate the position of each workpiece 7 when batch processing the workpieces 7, which has the advantages of high processing efficiency, prevention of processing errors, improved processing accuracy, and easy operation.

[0034] The specific embodiments described herein are merely illustrative of the spirit of the present invention. Persons skilled in the art may make various modifications, additions, or substitutions to the described specific embodiments without departing from the spirit of the present invention or exceeding the scope of the appended claims.

[0035] Although this document frequently uses terms such as connecting disc 1, clamping body 2, mounting hole 2a, inner conical surface 2b, hydraulic chuck 3, tapered sleeve 3a, piston sleeve 3b, outer conical portion 3b1, annular boss 3b2, positioning sleeve 4, positioning portion 4a, positioning auxiliary device 5, connecting seat 5a, limiting block 5b, limiting protrusion 5b1, limiting groove 5b2, pull rod 5c, abutment portion 5c1, spring 5d, ball 5e, and handle 6, the use of other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A combined tooling for a porous shaft, comprising two coaxially arranged connecting plates (1), wherein a clamping body (2) is fixedly connected between the connecting plates (1), and the clamping body (2) is provided with a row of mounting holes (2a) for inserting workpieces, characterized in that: A hydraulic chuck (3) is provided in each of the mounting holes (2a), and the hydraulic chuck (3) comprises a tapered sleeve (3a) embedded in the mounting hole (2a) and a piston sleeve (3b) capable of driving the tapered sleeve (3a) to move axially. The inner side wall of the mounting hole (2a) has an inner tapered surface (2b), and the tapered sleeve (3a) has an outer tapered portion (3b1), and the outer tapered portion (3b1) can abut against the inner tapered surface (2b).

2. The combined tooling for porous shafts according to claim 1, characterized in that: The piston sleeve (3b) has a through hole in the middle, and an annular boss (3b2) is provided on the outside of the piston sleeve (3b). A hydraulic cavity is formed between the outer wall of the piston sleeve (3b) and the clamp body (2), and the annular boss (3b2) divides the hydraulic cavity into an oil inlet cavity and an oil outlet cavity.

3. The combined tooling for porous shafts according to claim 1, characterized in that: A positioning sleeve (4) is embedded in the upper portion of the mounting hole (2a), a through hole for inserting a workpiece is provided in the middle portion of the positioning sleeve (4), and a disc-shaped positioning portion (4a) is provided at the upper end of the positioning sleeve (4).

4. The combined tooling for porous shafts according to claim 1, 2 or 3, characterized in that: The mounting holes (2a) are arranged in groups of two, and a positioning auxiliary device (5) is provided between the mounting holes (2a) in the same group. The positioning auxiliary device (5) is located at the upper end of the clamp body (2).

5. The combined tooling for porous shafts according to claim 4, characterized in that: The positioning auxiliary device (5) includes a connecting seat (5a) fixedly connected to the clamp body (2), a limit block (5b) hinged on the connecting seat (5a), the limit block (5b) is T-shaped, the lower end of the limit block (5b) is hinged on the clamp body (2), the upper end of the limit block (5b) is protruded on both sides and is used to embed the spline groove of the workpiece, the middle part of the limit block (5b) is vertically fixed with a handle (6), and the handle (6) can drive the limit block (5b) to swing.

6. The combined tooling for porous shafts according to claim 5, characterized in that: A pull rod (5c) is transversely passed through the connecting seat (5a), and a spring (5d) is provided between the pull rod (5c) and the connecting seat (5a). The spring (5d) pushes the pull rod (5c) so that the inner end of the pull rod (5c) rests against the limit block (5b).

7. The combined tooling for porous shafts according to claim 6, characterized in that: The inner end of the pull rod (5c) is a disc-shaped abutting portion (5c1), and the outer end surface of the abutting portion (5c1) can abut against the outer side wall of the limit block (5b).

8. The combined tooling for porous shafts according to claim 7, characterized in that: The middle part of the abutting portion (5c1) is provided with a protruding and conical tip (5c2), and the outer side wall of the limiting block (5b) is provided with a limiting groove (5b2) matching the tip (5c2), and the tip (5c2) is embedded in the limiting groove (5b2).

9. The combined tooling for porous shafts according to claim 7, characterized in that: A ball (5e) is positioned on the outer end surface of the abutting portion (5c1), and the ball (5e) protrudes from the outer end surface of the abutting portion (5c1). A limiting groove (5b2) matching the ball (5e) is provided on the outer side wall of the limiting block (5b).

10. The combined tooling for porous shafts according to claim 6, characterized in that: The outer end of the pull rod (5c) is fixedly connected with a handle (6).

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