CN216656555U

CN216656555U - Clamp for angular positioning machining and broaching clamping device

Info

Publication number: CN216656555U
Application number: CN202122557114.4U
Authority: CN
Inventors: 汤依哲; 向锐; 付品鑫; 赵德满
Original assignee: Changsha Zt Aero Transimission Co ltd
Current assignee: Changsha Zt Aero Transimission Co ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2022-06-03
Anticipated expiration: 2031-10-22

Abstract

The utility model discloses a clamp for angular positioning machining, which is a drawing clamp and comprises a clamp body, a pressing plate and a first fastener, wherein the first fastener is used for connecting the pressing plate with the clamp body and tightly pressing a part between the clamp body and the pressing plate, the clamp body is provided with through holes penetrating through two ends of the clamp body, an angular positioning pin is arranged below the through holes, and the positions of the through holes and the angular positioning pin respectively correspond to the positions of a spline hole and a high precision hole of the part. The utility model also provides a broaching clamping device for angular positioning machining, which comprises a broaching rod, a broaching tool and the fixture, wherein the broaching rod is connected with the main shaft of the broaching machine, the fixture is connected with the fixture mounting hole of the broaching machine, and the broaching tool is mounted and connected on the broaching rod and penetrates through the through hole of the fixture of the broaching machine. The utility model has the advantages of simple and convenient clamping and high processing efficiency.

Description

Clamp for angular positioning machining and broaching clamping device

Technical Field

The utility model relates to the field of mechanical clamping, in particular to a clamp for angular positioning machining and a broaching clamping device.

Background

An existing lever body made of aluminum products of a certain model is characterized in that a part 1 is provided with a small spline hole 12 and a high-precision unthreaded hole 11, and an angular direction requirement exists between a spline of the spline hole 12 and the high-precision unthreaded hole 11, as shown in fig. 1(a is a front view of the part 1, and fig. 1(B) is a cross-sectional view of a line B-B in fig. 1 (a)), an angular direction of a spline tooth, close to one side of the high-precision unthreaded hole 11, of the spline hole 12 is taken as a reference A, the high-precision unthreaded hole 11 has a symmetry requirement on the reference A, and the spline hole 12 cannot be machined by using inserted teeth due to the design precision of the major diameter of the spline, and is difficult to be machined by using broaching, and the main reasons are as follows:

(1) the installation angle of the part cannot be determined when the part is installed by the common flange in the pulling method, and the installation and processing states of the part are completely random;

(2) the installation angle of the broach cannot be determined when the broach is installed by a common broach rod, and the use state of the broach after installation is completely random each time;

(3) the common angular positioning pin is used for mounting parts and cutters, the preparation time for machining each part is long, and the machining efficiency is low.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a clamp for angular positioning machining and a broaching clamping device, which are simple in clamping and high in machining efficiency.

In order to solve the technical problem, the utility model adopts the following technical scheme:

the utility model provides an anchor clamps are used in angular positioning processing, anchor clamps are for drawing worker anchor clamps, include anchor clamps body, clamp plate, first fastener is used for this body coupling with clamp plate to compress tightly the part between anchor clamps body and clamp plate, the anchor clamps body is equipped with the through-hole that runs through anchor clamps body both ends, is equipped with the angular positioning round pin below the through-hole, the position of through-hole and angular positioning round pin is corresponding with the position in the splined hole of part and hi-fix unthreaded hole respectively.

As a further improvement of the above technical solution:

the upper portion of the clamp body is horizontally provided with a drawing edge, and the drawing edge is perpendicular to a connecting line between the through hole and a central shaft of the angular positioning pin.

The drawing fixture further comprises a stud bolt, the stud bolt is located between the pressing plate and the fixture body, and one end of the stud bolt is embedded into the fixture body.

As a general concept, the utility model further provides a broaching and clamping device for angular positioning machining, which comprises a broaching bar, a broaching tool and the fixture, wherein the broaching bar is connected with the main shaft of the broaching machine, the fixture is connected with the fixture mounting hole of the broaching machine, and the broaching tool is mounted and connected on the broaching bar and penetrates through the through hole of the broaching machine fixture.

As a further improvement of the above technical solution:

the broach rod is provided with a mounting groove which is perpendicular to the central shaft of the broach rod in the direction close to one side of the broach, an angular positioning fork is inserted into the mounting groove, the broach is provided with a broach platform in the handle of the broach, and the angular positioning fork is matched with the broach platform to realize the angular positioning of the broach.

The number of the broach flat platforms is two, and the broach flat platforms are symmetrically arranged around the central shaft of the hilt.

The angular positioning fork comprises a fork head part, the fork head part is provided with a fork head and a fork groove between the fork heads, the fork head part is inserted into the mounting groove of the broach rod and matched with the mounting groove, and the fork groove is matched with the broach flat table on the broach.

The broach rod comprises a cutter rod outer circle, a cutter rod outer thread is arranged on the cutter rod outer circle, the broach rod outer thread is connected with a broaching machine spindle, a fixing nut is installed on the cutter rod outer thread, and the fixing nut is used for fixing the broach rod.

The broaching clamping device further comprises a cutter setting rod, and the cutter setting rod is used for determining the specific angular position of the mounting groove of the cutter setting rod before the broaching tool is mounted.

The tool setting rod comprises a tool rod shaft and a tool bar block, one end of the tool rod shaft is connected to the tool rod block, a tool setting flat table is arranged at the other end of the tool rod shaft and matched with the angular positioning fork, a tool rod hole is formed in the tool rod block, and the positions of the tool rod shaft and the tool rod hole correspond to the positions of a spline hole and a high precision hole of a part.

Compared with the prior art, the utility model has the advantages that:

according to the fixture, the through hole and the angular positioning pin correspond to the spline hole and the high precision unthreaded hole of the part respectively in position, the angular position of the part is determined, and the angular machining of the part is realized.

According to the fixture, the angular correction is only needed to be adjusted once through the cutter pulling rod and the angular positioning fork, subsequent part machining can be directly conducted according to a common machining method of a puller, and machining efficiency is improved.

Drawings

Fig. 1 is a schematic structural view of a part.

Fig. 2 is a schematic diagram of the broaching fixture and part-mounting positioning process.

Fig. 3 is a top view of the installed broaching fixture and part.

Fig. 4 is a schematic structural view of the drawing jig.

Fig. 5 is a top view of a broaching fixture.

Figure 6 is a schematic view of the installation of the broaching fixture.

Fig. 7 is a top view of the draw bar.

Fig. 8 is a front sectional view of the draw bar.

FIG. 9 is a schematic view of the construction of the angular positioning fork.

Fig. 10 is a schematic view of the structure of the broach.

Fig. 11 is a cross-sectional view taken along line D-D of fig. 10.

Fig. 12 is a schematic view of the structure of the cutter bar.

Fig. 13 is a top view of the knife bar at the knife bar platform.

Fig. 14 is a schematic view of the use of the knife holder.

The reference numerals in the figures denote: 1. a part; 11. a high precision unthreaded hole; 12. a splined bore; 2. pulling a cutter rod; 21. mounting grooves; 22. a cutter bar external thread; 23. fixing a nut; 3. an angular positioning fork; 31. a fork groove; 4. drawing a fixture; 41. a clamp body; 411. a through hole; 412. drawing straight edges; 413. an angular positioning pin; 42. pressing a plate; 43. a first fastener; 431. fastening a nut; 432. fastening a bolt; 433. a gasket; 44. a stud bolt; 5. broaching; 51. a broach flatbed; 7. aligning the cutter bar; 71. a cutter bar shaft; 711. aligning a flat table; 72. a cutter bar block; 721. a cutter bar hole; 8. a movable positioning pin.

Detailed Description

The utility model will be described in further detail below with reference to the drawings and specific examples. Unless otherwise specified, the instruments or materials employed in the present invention are commercially available.

Example 1:

as shown in fig. 2 to 5, the angular positioning machining fixture of the present embodiment is a drawing fixture 4, and includes a fixture body 41, a pressing plate 42, and a first fastening member 43, where the first fastening member 43 is used to connect the pressing plate 42 with the fixture body 41 and press the part 1 between the fixture body 41 and the pressing plate 42, the fixture body 41 is provided with a through hole 411 penetrating through two ends of the fixture body 41, an angular positioning pin 413 is provided below the through hole 411, and positions of the through hole 411 and the angular positioning pin 413 correspond to positions of the spline hole 12 and the high precision hole 11 of the part 1, respectively.

The upper part of the clamp body 41 is horizontally provided with a straightening edge 412, and the straightening edge 412 is vertical to a connecting line between the through hole 411 and the central axis of the angular positioning pin 413. When the broaching fixture 4 is installed on the broaching machine, the broaching edge 412 of the broaching fixture 4 can be leveled by using a level gauge, and the installation angle of the broaching fixture 4 is controlled.

The drawing jig 4 further includes a stud 44, the stud 44 being located between the pressing plate 42 and the jig body 41, and one end of the stud 44 being embedded in the jig body 41.

The first fastening member 43 includes a fastening nut 431, a fastening bolt 432, and a washer 433, the fastening bolt 432 is used for connecting the pressing plate 42 and the clamp body 41, the fastening nut 431 is used for locking the fastening bolt 432, and the washer 433 is sleeved outside the fastening bolt 432 and is located between the pressing plate 42 and the clamp body 41.

One end of the stud 44 is embedded in the clamp body 41, and the other end abuts against the pressure plate 42.

In this embodiment, the pressure plate 42, the first fastening member 43, and the stud bolts 44 are provided in two sets and are symmetrically arranged.

In this embodiment, the through holes 411 penetrate through the left and right ends of the fixture body 41 and are located in the middle of the fixture body 41, which is highly accurate.

As shown in fig. 2 and 3, the method of using the broaching fixture 4 of the present invention: when the part 1 is installed, the part 1 is firstly placed on the fixture body 41, the high precision unthreaded hole 11 of the part 1 is matched with the angular positioning pin 413, then the movable positioning pin 8 is installed in the through hole 411 to fix the installation position of the spline hole 12 of the part 1, and the pressing plate 42 is pressed tightly. The outer wall of the movable positioning pin 8 is matched with the inner wall of the through hole 411.

As shown in fig. 6, the broaching clamping device for angular positioning machining of the present invention includes a broaching bar 2, a broaching tool 5 and the above-mentioned clamp, the broaching bar 2 is connected with the broaching machine spindle, the clamp is connected with the broaching machine clamp mounting hole, the broaching tool 5 is mounted on the broaching bar 2 and passes through the through hole 411 of the broaching machine clamp.

As shown in fig. 7 to 11, in the present embodiment, a mounting groove 21 is provided on the broach rod 2 in a direction close to the broach 5, the mounting groove 21 is perpendicular to a central axis of the broach rod 2, an angular positioning fork 3 is inserted into the mounting groove 21, the broach 5 is provided with a broach platform 51 at the handle, and the angular positioning fork 3 cooperates with the broach platform 51 to realize angular positioning of the broach 5.

As shown in fig. 9, the angular positioning fork 3 includes a fork head portion provided with fork heads and fork grooves 31 between the fork heads, the fork head portion is inserted into the mounting groove 21 of the broach rod 2 and fitted with the mounting groove 21, and the fork grooves 31 are fitted with the broach flats 51 on the broach 5. The fork head and the fork slot 31 of the fork head of the angular positioning fork 3 are highly accurate.

As shown in fig. 11, the number of the broach flats 51 is two, and the flats are arranged symmetrically about the shank center axis. The angular orientation of the two broach flats 51 is related to the angular orientation of the cutting edge. The broach edge and the broach platform 51 are symmetrical about the horizontal line with the horizontal line as a reference A, and the horizontal line passes through the edge tip of the broach edge and corresponds to the angular orientation of the splined hole 12 and the precision finishing hole 11 of the part 1.

The broaching rod 2 comprises a rod excircle, a rod external thread 22 is arranged on the rod excircle, the rod external thread 22 is connected with a broaching machine spindle, a fixing nut 23 is installed on the rod external thread 22, and the fixing nut 23 is used for fixing the broaching rod 2. In this embodiment, the draw bar 2 is reversely fixed by the fixing nut 23, and the inner wall of the mounting groove 21 is matched with the outer side of the angular positioning fork 3.

As shown in fig. 12 to 14, in the present embodiment, the broaching clamping device further includes a tool setting bar 7, and the tool setting bar 7 is used for determining a specific angular position of the mounting groove 21 of the broaching bar 2 before the broaching tool 5 is mounted, so as to simulate a mounting state of the part 1 and the broaching tool 5.

As shown in fig. 12 to 13 (fig. 12(a) is a front view of the cutter bar 7, fig. 12(b) is a right view of the cutter bar 7 of fig. 12(a), the left drawing of fig. 13 is a partially enlarged view of the tool setting platform 711 of the tool setting lever 7, and the right drawing of fig. 14 is a cross-sectional view of C-C in the left drawing of fig. 13), in this embodiment, the opposite cutter bar 7 comprises a cutter bar shaft 71 and a cutter bar block 72, the structure of the cutter bar shaft 71 is similar to that of the broach 5, the installation state of the broach 5 is simulated, the structure of the cutter bar block 72 is similar to that of the part 1, one end of the cutter bar shaft 71 used for simulating the installation state of the part 1 is connected to the cutter bar block 72, the other end of the cutter bar shaft is provided with a pair of flat platforms 711, the tool setting flat platform 711 is matched with the angular positioning fork 3, a cutter bar hole 721 is arranged on the cutter bar block 72, and the positions of the cutter bar shaft 71 and the cutter bar hole 721 correspond to the positions of the spline hole 12 and the high-precision unthreaded hole 11 of the part 1. In this embodiment, the cutter bar shaft 71 is positioned directly above the cutter bar hole 721.

The utility model discloses a use method of a broaching clamping device for angular positioning machining, which comprises the following steps:

step S1: and (4) leveling the broaching fixture 4 by a level gauge and then installing the leveling fixture on a broaching machine.

Step S2: the broach rod 2 is mounted on the broaching machine, taking care that the external shank thread 22 is not first screwed with the fastening nut 23.

Step S3: the tool setting bar 7 is inserted from the drawing jig 4, and one end of the tool setting flatbed 711 is inserted into the tool setting bar 2.

Step S4: and (3) installing the angular positioning fork 3 into the installation groove 21 of the broach rod 2, continuously adjusting the installation angular direction of the broach rod 2 at the same time until the angular positioning fork 3 can be correctly installed into the broach rod 2 to indicate that the angular correction is finished, screwing the fixing nut 23 on the broach rod 2, and reversely fixing the broach rod 2.

Step S5: the angular positioning fork 3 and the tool setting rod 7 are taken down, the part 1 is installed on the drawing fixture 4, the high-precision unthreaded hole 11 of the part 1 is matched with the upper angular positioning pin 413 of the fixture, the spline hole 12 to be drawn is approximately aligned with the through hole 411 on the drawing fixture 4, the movable positioning pin 8 is inserted from the other end face of the drawing fixture 4, the installation position of the part 1 is determined, and the movable positioning pin 8 is taken out after the part 1 is fixed by the pressing plate 42.

Step S6: the mounting broach 5 broaches the splined hole 12 of the part 1.

Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the utility model, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.

Claims

1. The utility model provides an angle location adds clamping apparatus for processing, the clamping apparatus is for drawing worker's anchor clamps (4), includes anchor clamps body (41), clamp plate (42), first fastener (43) are used for being connected clamp plate (42) and anchor clamps body (41) to compress tightly part (1) between anchor clamps body (41) and clamp plate (42), its characterized in that: the fixture is characterized in that the fixture body (41) is provided with a through hole (411) penetrating through two ends of the fixture body (41), an angular positioning pin (413) is arranged below the through hole (411), and the positions of the through hole (411) and the angular positioning pin (413) correspond to the positions of a spline hole (12) and a high-precision unthreaded hole (11) of a part (1) respectively.

2. The clamp of claim 1, wherein: the upper part of the clamp body (41) is horizontally provided with a drawing edge (412), and the drawing edge (412) is perpendicular to a connecting line between the through hole (411) and the central shaft of the angular positioning pin (413).

3. The clamp of claim 1 or 2, wherein: the drawing fixture (4) further comprises a stud bolt (44), the stud bolt (44) is located between the pressing plate (42) and the fixture body (41), and one end of the stud bolt (44) is embedded into the fixture body (41).

4. The utility model provides an angle location processing is with broaching clamping device which characterized in that: comprising a broach bar (2), a broach (5) and a clamp according to any one of claims 1 to 3, the broach bar (2) being connected with the broaching machine spindle, the clamp being connected with the broaching machine clamp mounting hole, the broach (5) being mounted on the broach bar (2) and passing through the through hole (411) of the broaching machine clamp.

5. The broaching clamping device of claim 4, wherein: broach pole (2) are equipped with mounting groove (21) that set up perpendicularly with broach pole (2) center pin near broach (5) one side direction, mounting groove (21) interpolation is equipped with angular positioning fork (3), broach (5) are equipped with broach flat platform (51) in handle of a knife department, angular positioning fork (3) are through cooperateing the angular positioning who realizes broach (5) with broach flat platform (51).

6. The broaching clamping device of claim 5, wherein: the number of the broach flat platforms (51) is two, and the broach flat platforms are symmetrically arranged around the central axis of the hilt.

7. The broaching clamping device of claim 6, wherein: the angular positioning fork (3) comprises a fork head part, the fork head part is provided with a fork head and a fork groove (31) located between the fork heads, the fork head part is inserted into the mounting groove (21) of the broach rod (2) and matched with the mounting groove (21), and the fork groove (31) is matched with a broach flat platform (51) on the broach (5).

8. The broaching clamping device as recited in any one of claims 4 to 7, wherein: draw cutter arbor (2) including the cutter arbor excircle, be equipped with cutter arbor external screw thread (22) on the cutter arbor excircle, be connected with the broaching machine main shaft through cutter arbor external screw thread (22), install fixation nut (23) on cutter arbor external screw thread (22), fixation nut (23) are used for fixed draw cutter arbor (2).

9. The broaching clamping device as recited in any one of claims 4 to 7, wherein: the broaching machine is characterized by further comprising a broaching bar (7), wherein the broaching bar (7) is used for determining the specific angular position of the mounting groove (21) of the broaching bar (2) before the broaching tool (5) is mounted.

10. The broaching clamping device of claim 9, wherein: the tool setting rod (7) comprises a tool bar shaft (71) and a tool bar block (72), one end of the tool bar shaft (71) is connected to the tool bar block (72), a tool setting flat table (711) is arranged at the other end of the tool bar shaft, the tool setting flat table (711) is matched with the angular positioning fork (3), a tool bar hole (721) is formed in the tool bar block (72), and the positions of the tool bar shaft (71) and the tool bar hole (721) correspond to the positions of the spline hole (12) and the high-precision hole (11) of the part (1).