CN102407379A - Inner-cone spline broaching machine tool - Google Patents

Abstract

The invention discloses an internal cone spline broaching machine tool, which comprises: a base arranged on the bed, on which a guide seat is arranged; The broach can be vertically slidably arranged on the guide seat; it is sheathed on the guide seat and slidably arranged on the slide plate on the base; the knife letting cylinder assembly is set on the base, and its extended end is connected with the slide plate; It is set on the slide plate and is used to fix the working device of the inner cone spline; it is set on the slide plate and is used to drive the drive device to rotate one indexing unit each time. The present invention adopts broach broaching method to process the inner cone spline, the precision is higher than that of planing teeth, and the efficiency is higher than that of shaping and planing teeth; The accuracy is uniform and reliable, and the degree of automation is high; the invention is easy to disassemble and can process internal cone splines of various specifications by replacing the working device.

Description

A kind of inner cone spline broaching machine tool

technical field

The invention relates to the technical field of internal cone spline processing, and more specifically relates to an internal cone spline broaching machine tool.

Background technique

The spline connection is composed of internal splines and external splines. The internal and external splines are multi-tooth parts. The splines on the surface of the inner cylinder are internal splines, and the splines on the surface of the external cylinder are external splines. Obviously, the spline connection is the numerical development of the flat key connection.

Due to the difference in structure and manufacturing process, compared with the flat key connection, the spline connection has the following characteristics in terms of strength, technology and use: because more teeth and grooves are directly and uniformly made on the shaft and the hub hole, Therefore, the coupling force is relatively uniform; because the groove is shallow, the stress concentration at the root of the tooth is small, and the strength of the shaft and the hub is less weakened; the number of teeth is large, and the total contact area is large, so it can withstand large loads; parts on the shaft Good alignment with the shaft, which is very important for high-speed and precision machines; good guidance, which is very important for dynamic connections. Because the spline connection has the above effects, it is mainly used for connections that require high centering accuracy, large transmission torque, or frequent slippage.

Due to the unique structure of the cone spline, its manufacturing process is more complicated, and sometimes special equipment is required, and the cost is high, especially the internal cone spline. At present, the internal cone splines with large diameters are generally processed by gear shaping machines or single-tooth planing on planers with forming knives in China. However, the efficiency of gear shaping machines is low, and planer processing is not only inefficient, but also of poor quality.

Therefore, how to process large-diameter internal taper splines efficiently and with high quality has become a technical problem to be solved urgently by those skilled in the art.

Contents of the invention

In view of this, the present invention provides an internal cone spline broaching machine tool for machining large diameter internal cone splines with high efficiency and high quality.

To achieve the above object, the present invention provides the following technical solutions:

An internal cone spline broaching machine tool, comprising:

The base set on the bed has a guide seat on it;

A broach with one end protruding into the bed and connected to the stretching cylinder in the bed, the broach can be vertically slidably arranged on the guide seat;

a sliding plate sleeved on the guide seat and slidably arranged on the base;

The knife letting oil cylinder assembly arranged on the base, its extended end is connected with the slide plate;

A working device arranged on the slide plate and used to fix the inner cone spline;

A driving device arranged on the slide plate and used to drive the working device to rotate by one indexing unit each time.

Preferably, in the above-mentioned internal cone spline broaching machine tool, the working device specifically includes an indexing device and a positioning tool arranged on the top of the indexing device for fixing the internal cone spline;

The indexing device includes a oscillating plate, a ratchet, a first pawl, a second pawl and an opening connecting seat, the oscillating plate is arranged on the slide plate, the ratchet is rotatably arranged on the oscillating plate, The first pawl is arranged on the oscillating plate and cooperates with the ratchet, the second pawl opposite to the first pawl is arranged on the slide plate, and the opening connecting seat set on the oscillating plate;

The driving device is an indexing oil cylinder, and the extension rod of the indexing oil cylinder is connected with a shifting block, and the shifting block extends into the opening groove of the opening connecting seat.

Preferably, in the above-mentioned inner cone spline broaching machine tool, a slant plate arranged between the slide plate and the swing plate is further included, and the taper angle of the slant plate is the same as that of the inner cone spline.

Preferably, in the above-mentioned internal taper spline broaching machine tool, it also includes:

A positioning sleeve arranged at the center of the inclined plate;

The bush is fitted on the outer side of the positioning sleeve, and the ratchet is rotatably arranged on the bush.

Preferably, in the above-mentioned internal taper spline broaching machine tool, it also includes a slide seat arranged on the inclined plate, on which a slideway is provided, and a slide block is arranged in the slideway, and the shift block and the The sliders are connected, and the extension rod of the indexing oil cylinder is connected with the slider. The inclined plate is provided with an indexing proximity switch for controlling the extension length of the extension rod of the indexing oil cylinder.

Preferably, in the above-mentioned internal taper spline broaching machine tool, the shifting block is a cylindrical roller.

Preferably, in the above-mentioned internal taper spline broaching machine tool, a positioning device is also included, and the positioning device specifically includes:

A positioning plate arranged on the top of the ratchet, on which the positioning tool is arranged;

The positioning oil cylinder arranged on the oscillating plate has a slideway extending toward the positioning plate at its front end;

One end of the pin arranged in the slideway is against the extension rod of the positioning cylinder, and the other end is used to be inserted into the tooth groove of the positioning disc;

A shift fork whose one end is hinged on the inclined plate, and whose other end is hinged to the latch, and a touch control part is provided between the two ends of the shift fork;

A bump arranged on the oscillating plate and cooperating with the touch part.

Preferably, in the above-mentioned internal taper spline broaching machine tool, the top of the positioning plate is provided with a lower plate, and the lower plate is pressed on the positioning sleeve through the pressure plate, and the top of the lower plate is provided with an upper plate. plate, the positioning tool is set on the upper plate.

Preferably, in the above-mentioned internal taper spline broaching machine tool, the touch control part is a roller provided on the shift fork.

Preferably, in the above-mentioned internal taper spline broaching machine tool, the slide plate is limited by two pressure plates installed on the base.

It can be seen from the above-mentioned technical scheme that the internal taper spline broaching machine tool provided by the present invention includes: a base arranged on the bed, on which a guide seat is arranged; one end extends into the bed, and is connected with the bed The broach connected with the stretching oil cylinder in the body, the broach can be vertically slidably arranged on the guide seat; the slide plate is sleeved on the guide seat and slidably arranged on the base; The tool letting cylinder assembly on the base, its protruding end is connected with the slide plate; it is set on the slide plate, and is used to fix the working device of the inner cone spline; it is set on the slide plate, and is used to drive The working device rotates a driving device with one indexing unit at a time.

Based on the above arrangement, during use, the workpiece, that is, the inner cone spline, is fastened on the working device. The driving device drives the working device to rotate clockwise, and rotates one indexing unit. According to the distance between the inner cone spline keyways, the rotating indexing unit can be adjusted accordingly. Each time the working device rotates, it just corresponds to the next keyway to be processed. After the driving device drives the working device to rotate in place, the stretching cylinder drives the broach up. After the broach rises to the preset position, the knife cylinder pushes the working device and the slide plate at the bottom to the processing position, and then the broach pulls down a tooth. , after the keyway is cut, let the knife oil cylinder pull back the working device and the slide plate, and enter the next cycle.

The advantages of the present invention are: the internal cone spline is processed by broach broaching, the precision is higher than that of planing teeth, and the efficiency is higher than that of gear shaping and planing; Therefore, the indexing is uniform and reliable, and the degree of automation is high; the invention is easy to disassemble and can process various specifications of internal cone splines by changing the working device, and it is easy to adjust the processing size of the cone splines. The processing quality and processing efficiency of the present invention are superior to the prior art.

In a preferred solution of the present invention, the working device specifically includes an indexing device and a positioning tool set on the top of the indexing device for fixing the inner cone spline; the indexing device includes a swing plate, a ratchet , the first ratchet, the second ratchet and the opening connection seat, the swing plate is set on the slide plate, the ratchet is rotatably set on the swing plate, the first ratchet is set on the On the oscillating plate, and cooperate with the ratchet, the second pawl opposite to the first pawl is set on the slide plate, and the opening connecting seat is set on the oscillating plate; the The driving device is an indexing oil cylinder, and the extension rod of the indexing oil cylinder is connected with a shifting block, and the shifting block extends into the opening groove of the opening connecting seat.

Based on the above settings, after the machine tool is started to work, the indexing cylinder pushes the shifting block to swing the opening connecting seat to swing, thereby driving the oscillating plate to rotate clockwise. When the extension rod of the indexing cylinder stretches out to a preset length, the indexing The pulling back of the oil cylinder drives the oscillating plate to rotate counterclockwise, and the oscillating plate drives the ratchet mounted on it to move the ratchet meshed with it to rotate one tooth, that is, one indexing unit. The invention adopts ratchet indexing and is driven by hydraulic pressure to perform actions such as automatic indexing, automatic knife feed, and knife retraction, so the indexing is uniform and reliable, and the degree of automation is high.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

Fig. 1 is the sectional structure schematic diagram of the internal taper spline broaching machine tool provided by the embodiment of the present invention;

Fig. 2 is a schematic cross-sectional structure diagram of an internal taper spline broaching machine tool provided by another embodiment of the present invention;

Fig. 3 is the A direction view of Fig. 2;

Fig. 4 is a schematic top view structure diagram of the internal taper spline broaching machine tool provided by the embodiment of the present invention.

Detailed ways

The invention discloses an inner cone spline broaching machine tool, which can process large-diameter inner cone splines with high efficiency and high quality.

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Please refer to Fig. 1-Fig. 4, Fig. 1 is the cross-sectional structural schematic diagram of the internal cone spline broaching machine tool provided by the embodiment of the present invention; Fig. 2 is the cross-section of the internal cone spline broaching machine tool provided by another embodiment of the present invention Fig. 3 is a view from the direction A of Fig. 2; Fig. 4 is a top view structural diagram of an internal taper spline broaching machine tool provided by an embodiment of the present invention.

The present invention provides a high internal cone spline broaching machine tool, which includes a base 20, a broach 3, a slide plate 5, a working device 2, a knife relief cylinder assembly 23 and the working device 2. Wherein, the base 20 is arranged on the bed 1 , and is generally assembled and connected with the bed 1 through the positioning key 4 , and the base 20 is provided with a guide seat 13 , and the guide seat 13 is positioned by the positioning pin 19 . One end of the broach 3 extends into the bed 1 and is connected with the stretching oil cylinder in the bed 1 , and the broach 3 is vertically slidably arranged on the guide seat 13 . The broach 3 is slidably arranged on the guide seat 13, and the broach 3 can be driven to move up and down by the stretching oil cylinder to complete the cutting work. In order to ensure that the guide seat 13 has sufficient guiding stability and wear resistance for the broach 3, the present invention can also install a side guide plate 37 and a vertical guide plate 38 in the opening groove of the guide seat 13, and the broach 3 passes through vertically. Open groove, and slide up and down along side guide plate 37 and vertical guide plate 38.

The sliding plate 5 is sheathed on the guide seat 13 and is slidably disposed on the base 20 . The sliding plate 5 is limited by two pressing plates 21 installed on the base 20 . The two pressing plates 21 determine the sliding direction of the sliding plate 5 . The purpose of setting the slide plate 5 is to separate the cutting position and the non-cutting position of the workpiece, that is, the workpiece can be pushed to the cutting position through the sliding of the slide plate 5, and the workpiece can be moved away from the cutting position by retreating the slide plate 5. The sliding power of the slide plate 5 is provided by the knife oil cylinder assembly 23, which is arranged on the base 20, and its extended end is connected with the slide plate 5, that is, by extending the extension rod of the knife oil cylinder assembly 23. Going out and retracting realizes the forward movement and retreat of slide plate 5.

The working device 2 for fixing the inner cone spline is arranged on the slide plate 5, and the workpiece, namely the inner cone spline, can be fixed on the top of the working device 2, that is, the movement of the pushing slide plate 5 can drive the working device 2 to move accordingly. The driving device 24 is arranged on the slide plate 5, and is used to drive the working device 2 to rotate one index unit each time, that is, after processing a tooth on the workpiece, the working device 2 needs to be rotated by a certain angle so that the broach 3 can process the workpiece. Another tooth.

In the process of the present invention, the workpiece, that is, the inner cone spline, is fastened on the working device 2 . The driving device 24 drives the working device to rotate clockwise, and rotates one index unit (that is, the angle between two adjacent teeth of the inner cone spline). The specific rotation angle can be controlled by the driving device 24 itself, or can be set externally on The driving device is interlocked with the proximity switch, so that the rotation angle of the working device 2 is exactly one division unit. According to the different distances between the inner cone spline keyways, the indexing unit of the rotation can be adjusted accordingly. Each time the working device 2 rotates, it just corresponds to the next keyway to be processed. After the driving device 24 drives the working device 2 to rotate in place, the stretching oil cylinder drives the broach 3 to rise. After the broach 3 rises to the preset position, the position can be controlled by sensors such as proximity switches, so that the knife cylinder assembly 23 will The working device 2 and the slide plate 5 at the bottom are pushed to the processing position, and then the broach 3 pulls down a tooth. After the keyway is cut, the knife oil cylinder assembly 23 pulls the working device 2 and the slide plate 5 back to enter the next cycle.

The working device 2 may specifically include an indexing device and a positioning tool 12 arranged on the top of the indexing device for fixing the inner cone spline. Wherein, the indexing device includes a swing plate 7 , a ratchet 17 , a first ratchet 8 , a second ratchet and an opening connecting seat 28 . The oscillating plate 7 is arranged on the slide plate 5 , and the ratchet 17 is rotatably arranged on the oscillating plate 7 , that is, relative rotation can occur between the ratchet 17 and the oscillating plate 7 . The first pawl 8 is arranged on the oscillating disk 7, and is generally connected with the oscillating disk 7 through the pin shaft 9, and cooperates with the ratchet 17. During the rotation of the oscillating disk 7, the first pawl 8 follows the rotation. Promote ratchet 17 to rotate. The second pawl opposite to the first pawl 8 is arranged on the slide plate 5 and opposite to the first pawl 8 . When the pawl 8 rotates clockwise, the ratchet 17 is prevented from rotating with the oscillating disc 7 . The opening connecting seat 28 is arranged on the oscillating disk 7, and the driving device 24 is an indexing oil cylinder. After the extension rod of the indexing oil cylinder is stretched out, the shifting block 27 can stir the opening connecting seat 28 to drive the swing plate 7 to rotate.

After starting the machine tool to work, the indexing oil cylinder pushes the shifting block 27 to swing the opening connecting seat 28 to swing, thereby driving the oscillating plate 7 to rotate clockwise. The length can be controlled by setting a proximity switch at its front end, that is, it will be retracted after the extension rod touches the proximity switch), and the pullback of the indexing cylinder will drive the oscillating plate 7 to rotate counterclockwise, and the oscillating plate 7 will drive the first A ratchet 8 stirs the ratchet 17 meshed with it to rotate one tooth, that is, one division unit. The invention adopts ratchet indexing and is driven by hydraulic pressure to perform actions such as automatic indexing, automatic knife feed, and knife retraction, so the indexing is uniform and reliable, and the degree of automation is high.

The present invention can also use a servo motor or a stepping motor as the driving device 24. The servo motor or the stepping motor has the characteristics of high rotation angle control precision, and its effect is better than that of a common motor.

In order to adapt to the broaching of the inner cone spline, the present invention may also include a slant plate 6 arranged between the slide plate 5 and the wobble plate 7, the taper angle of the slant plate 6 is the same as that of the inner cone spline. That is, a slant plate 6 is set between the slide plate 5 and the oscillating plate 7, so that the oscillating plate 7 placed on the swash plate 6 is also inclined at a certain angle, and the angle of inclination of the oscillating plate 7 is just so that the inner cone with the inner cone hole After the spline semi-finished product is inclined, its inner wall is parallel to the broach 3 which is vertically arranged, so that the inner cone spline can be processed.

The present invention may also include positioning sleeve 18 and bushing 16 . Wherein, the positioning sleeve 18 is disposed at the center of the swash plate 6 , the bushing 16 is sleeved on the outside of the positioning sleeve 18 , and the ratchet 17 is rotatably disposed on the bushing 16 . The rotatable connection of the ratchet 17 is realized by sheathing the ratchet 17 on the outside of the bushing 16 .

The present invention also can comprise the slide seat 26 that is arranged on the swash plate 6, is provided with slideway on it, is provided with slide block 29 in this slideway, shifting block 27 links to each other with slide block 29, and the extension rod of indexing oil cylinder and The slide block 29 is connected, and the swash plate 6 is provided with an indexing proximity switch for controlling the extension length of the extension rod of the indexing oil cylinder.

The present invention determines the movement direction of the shifting block 27 by arranging the sliding seat 26 and a slideway on the sliding seat 26, that is, the shifting block 27 can only slide in the slideway. A sliding block 29 is arranged in the slideway, and a shifting block 27 is arranged on the sliding block 29 , and one end of the shifting block 27 is snapped into the opening groove of the opening connecting seat 28 . The indexing cylinder pushes the slider 2 to slide in the slideway of the slider 26, thereby driving the oscillating disk 7 to rotate clockwise. When the slider 29 triggers the proximity switch 241 at its front end, the oil cylinder pulls back and drives the oscillating disk 7 to rotate counterclockwise. , the oscillating plate 7 drives the first pawl 8 installed thereon to stir the ratchet 17 engaged with it to rotate one tooth, and the broach 3 pulls down one tooth. In order to reduce the friction between the shifting block 27 and the opening groove of the opening connecting seat 28 and improve the service life of the shifting block 27 and the opening connecting seat 28, the shifting block 27 provided by the present invention is a cylindrical roller.

In the tooth pulling process, in order to prevent the ratchet 17 from rotating, the positioning tool 12 and the workpiece on it are driven to rotate, resulting in inaccurate processing. The present invention may also include a positioning device, which specifically includes a positioning plate 15 , a positioning cylinder 36 and a latch 35 . Wherein, the positioning disc 15 is arranged on the top of the ratchet 17 , generally connected by bolts, and the positioning tool 12 is arranged on the positioning disc 15 . Positioning oil cylinder 36 is arranged on the swash plate 6, and its front end is provided with the slideway that stretches to locating disk 15, and latch 35 is arranged in the slideway of positioning oil cylinder 36 front ends, and this latch 35 one ends and the extension rod of positioning oil cylinder 36 offset, and another One end is used to be inserted into the slot of the positioning disc 15 to lock the positioning disc 15 . Along with the extension of the extension rod of the positioning oil cylinder 36, the latch 35 can be pushed to slide in the slideway. One end of the shift fork 33 is hinged on the inclined plate 6, and the other end is hinged to the bolt 35. In this embodiment, the bolt 35 and the shift fork 33 are hinged through the cylindrical pin 34. Between the two ends of the shift fork 33, there is a For the touch control part, the bump 32 is disposed on the oscillating plate 7 and cooperates with the touch control part. The touch part may preferably be a roller disposed on the shift fork 33 .

The indexing cylinder pushes the slider 29 to drive the oscillating disk 7 to rotate clockwise. At the same time, the bump 32 on the oscillating disk 7 triggers the shift fork 33 to drive the latch 35 to exit the positioning disk 15. When the slider 29 triggers the proximity switch at its front end After 241, the pullback of the indexing oil cylinder drives the oscillating disc 7 to rotate counterclockwise, and the oscillating disc 7 drives the first pawl 8 installed on it to move the ratchet 17 meshed with it to rotate one tooth. At this time, the shift fork 33 drives the latch 35 to reset After triggering the sensor installed on one side of the bolt 35, the broach 3 rises, and after the sensor corresponding to the broach in the bed 1 senses, the knife oil cylinder 23 pushes the slide plate 5 and the working device on it to the processing position, and the trigger limit After the position sensor, let the knife cylinder 23 stop, the positioning cylinder 36 works to lock the positioning plate 15, the broach 3 pulls down a tooth, and after triggering the sensor in the bed 1, let the knife cylinder 23 pull back the slide 5 and the working devices above it , until it touches the limit proximity switch 22 or stops, and enters the next cycle. Before the machine tool starts, the manual lubricating pump 25 can be used to manually lubricate each contact surface of the working device 2 .

The top of the positioning plate 15 is provided with a lower plate 10, the lower plate 10 is pressed on the positioning sleeve 18 by the pressure plate 14, the top of the lower plate 10 is provided with an upper plate 11, and the positioning tool 12 is arranged on the upper plate 11. Promptly install the lower plate 10 with bolts above the positioning plate 15, and use the pressure plate 14 to compress the lower plate 10 and the positioning sleeve 18, and the upper plate 11 and the positioning tool 12 are fastened with bolts and fixed on the lower plate 10 by bolts.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. A kind of internal cone spline broaching machine tool, is characterized in that, comprises: The base (20) arranged on the bed (1) is provided with a guide seat (13); A broach (3) with one end protruding into the bed (1) and connected to the stretching cylinder in the bed (1), the broach (3) can be vertically slidably arranged on the on the guide seat (13); a slide plate (5) sleeved on the guide seat (13) and slidably arranged on the base (20); The knife letting oil cylinder assembly (23) arranged on the base (20) is connected with the sliding plate (5) at its protruding end; The working device (2) arranged on the slide plate (5) and used to fix the inner cone spline; The driving device (24) is arranged on the slide plate (5) and is used to drive the working device (2) to rotate one index unit each time. 2. The internal cone spline broaching machine tool according to claim 1, characterized in that, the working device (2) specifically includes an indexing device and a top part of the indexing device for fixing the internal cone spline Key positioning tooling (12); The indexing device comprises a wobble plate (7), a ratchet (17), a first pawl (8), a second pawl and an opening connection seat (28), and the wobble plate (7) is arranged on the slide plate ( 5), the ratchet (17) is rotatably arranged on the oscillating plate (7), the first pawl (8) is arranged on the oscillating plate (7), and is connected with the ratchet ( 17) Cooperate, the second pawl set opposite to the first pawl (8) is set on the slide plate (5), and the opening connecting seat (28) is set on the oscillating plate (7 )superior; The driving device (24) is an indexing oil cylinder, and the extension rod of the indexing oil cylinder is connected with a shifting block (27), and the shifting block (27) extends into the opening groove of the opening connecting seat (28). 3. The internal taper spline broaching machine tool according to claim 2, further comprising a slant plate (6) arranged between the slide plate (5) and the swing plate (7), the slant plate (6) The plate (6) has the same taper angle as the said internal cone spline. 4. The internal taper spline broaching machine tool according to claim 3, further comprising: A positioning sleeve (18) arranged at the center of the inclined plate (6); The bushing (16) is set on the outside of the positioning sleeve (18), and the ratchet (17) is rotatably arranged on the bushing (16). 5. The internal taper spline broaching machine tool according to claim 4, further comprising a slide seat (26) arranged on the inclined plate (6), on which a slideway is provided, and the slideway A slide block (29) is provided inside, the shifting block (27) is connected with the slide block (29), the extension rod of the indexing oil cylinder is connected with the slide block (29), and the inclined plate ( 6) An indexing proximity switch is provided to control the extension length of the extension rod of the indexing oil cylinder. 6. The internal taper spline broaching machine tool according to claim 5, characterized in that, the shifting block (27) is a cylindrical roller. 7. The internal taper spline broaching machine tool according to claim 6, further comprising a positioning device, which specifically includes: A positioning plate (15) arranged on the top of the ratchet (17), the positioning tooling (12) is arranged on the positioning plate (15); The positioning oil cylinder (36) arranged on the oscillating plate (7) has a slideway extending toward the positioning plate (15) at its front end; The pin (35) arranged in the slideway has one end against the extension rod of the positioning cylinder (36), and the other end is used to be inserted into the tooth groove of the positioning disc (15); One end of the shift fork (33) is hinged on the inclined plate (6), the other end of which is hinged to the latch (35), and a touch control part is provided between the two ends of the shift fork (33); A bump (32) arranged on the oscillating plate (7) and cooperating with the touch part. 8. The internal taper spline broaching machine tool according to claim 7, characterized in that, the top of the positioning plate (15) is provided with a lower plate (10), and the lower plate (10) passes through the pressure plate (14 ) is compressed on the positioning sleeve (18), the top of the lower plate (10) is provided with an upper plate (11), and the positioning tooling (12) is arranged on the upper plate (11). 9. The internal taper spline broaching machine tool according to claim 7, characterized in that, the touch control part is a roller arranged on the shift fork (33). 10. The internal taper spline broaching machine tool according to any one of claims 1-9, characterized in that, the slide plate (5) is limited by two pressure plates (21) mounted on the base (20) bit.

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